PDC-roller mixed drill bit

The invention provides a PDC-roller mixed drill bit, which comprises a drill bit body, and the upper end of the drill bit body is configured to be a connecting joint for connecting a drill column; the roller assembly is installed on the drill bit body and comprises a roller palm arm fixedly connected with the drill bit body, a roller shaft fixedly connected with the roller palm arm and a roller installed on the roller shaft, and an outer fulcrum is formed at the end, connected with the roller palm arm, of the roller shaft; an inner fulcrum and roller teeth embedded in the roller are formed at one end, connected with the drill bit body, of the roller shaft; the PDC assembly is formed on the drill bit body, and the PDC assembly comprises a blade and cutting teeth embedded in the blade; the mixed drill bit can crush stratum rocks through rotation of the rolling wheels, crack defects are generated in the uncrushed rocks, axial vibration is generated and transmitted into a drill column, and ...

In-band clock synchronization method for hopping network

The invention relates to the technical field of network security, and provides a hopping network-oriented in-band clock synchronization method, which comprises the following steps of: screening nodes of which errors are smaller than a preset threshold value at intervals of a preset time period as primarily selected nodes; each primary selection node executes timing of a random duration, and the primary selection node which reaches timing first serves as a candidate node of the main node; and the candidate nodes invite to vote from other primarily selected nodes, and if votes exceeding more than half of the number of all primarily selected nodes are obtained, the candidate nodes are used as the master nodes, master node heartbeat is broadcasted to other nodes, and clock synchronization service is executed. The method provided by the invention is used for solving the problem that satellite time service equipment deployed in the whole network is high in construction cost and easy to be interfered ...

Method for synthesizing fenoxaprop-p-ethyl

The invention discloses a method for synthesizing fenoxaprop-p-ethyl. The method comprises the following steps of: (1) dissolving 2,6-dichlorobenzoxazole and R-(+)-2-(4-hydroxyphenoxy) propionic ester in hydrophilic organic solvent to obtain a first mixture; (2) adding solution of sodium chloride into the first mixture, and stirring uniformly to obtain a second mixture; (3) adding deacid reagent into the second mixture, stirring and mixing, and preserving heat and reacting; and (4) removing a water layer, evaporating to remove an organic layer, separating out a crude product, and recrystallizing to obtain the fenoxaprop-p-ethyl. A hydrophilic organic phase/salt containing aqueous system is used for synthesizing the fenoxaprop-p-ethyl, the problems that raw materials and potassium carbonate are not contacted fully in the anhydrous reaction or non-hydrophilic organic solvent reaction and the reaction speed is low are avoided, and the problem that the quality is influenced by too quick decomposition ...

Groove-shaped Schottky barrier rectifier and manufacture method thereof

The invention relates to a groove-shaped Schottky barrier rectifier and a manufacture method thereof. The groove-shaped Schottky barrier rectifier comprises a semiconductor base plate, a first conduction type substrate and a first conduction type drift area, wherein one or more grooves extend into the first conduction type drift area from a first main surface and limit one or more platform surface parts; insulating oxidation layers cover the inner walls of the grooves, and first electrodes are deposited in the grooves covered with the insulating oxidation layers; a second conduction type surrounding layer is arranged in the first conduction type drift area, corresponds to the bottoms of the grooves and clads the bottoms of the grooves; a first metal layer is deposited on the semiconductor base plate and is in ohmic contact with a first electrode phase; the first metal layer and the platform surface parts form a Schottky junction; and a second metal layer covers the second main surface of ...

Ultrasonic wave detecting method of mechanical type heat meter base meter rotating frequency

The invention discloses an ultrasonic detection method for base table rotational frequency of the mechanical heat meter. The inside of the base table of the mechanical heat meter is installed with a measurement disk which is immersed into water together with two ultrasonic transducers. The two ultrasonic transducers are arranged on the upper part of the measurement disk and present a V shape. One of the ultrasonic transmitting transducers continuously emits ultrasonic to the measurement disk. Half of the measurement is coated with sound-absorbing material, and the other half is coated with reflection material. The ultrasonic signal reflected by the measurement disk can be received by the other ultrasonic transmitting transducer. The amplitude of the ultrasonic receiving signal reflected by the reflection material is large. But the amplitude of the ultrasonic receiving signal reflected by the sound-absorbing material is small. The base table rotational frequency can be judged after the change ...

Groove type high-power MOS device and manufacturing method thereof

The invention relates to an MOS device and a manufacturing method thereof, in particular to a groove type high-power MOS device and the manufacturing method thereof. According to the technical scheme provided by the invention, on the overlook plane of the MOS device, the groove type high-power MOS device comprises a cellular area on a semi-conductive substrate and a terminal protection structure,the cellular area is arranged in the central area of the semi-conductive substrate; the periphery of the cellular area is provided with the terminal protection structure which comprises a partial pressure protection area at the inner circle and a cutoff protection area at the outer circle; by deepening the depth and the concentration of a second conductive type layer in the partial pressure protection area, the peripheral curvature in the well region of the partial pressure protection area is increased, thus inhibiting electric field concentration and increasing the withstand voltage. The groove ...

Video generation method and device

The invention discloses a video generation method and device, and belongs to the technical field of image processing. The method comprises the steps that a first image and a second image are acquired from a target image, the first image comprises a target object, and the second image comprises a background image except the target object in the target image; the second image is zoomed, a first video is generated, and the video content of the first video comprises a zooming process picture of the second image; and synthesizing the first image and the first video to obtain a target video.

Protection device and loops thereof detection method under no-power-failure line condition

The invention discloses a protection device and loops thereof detection method under a no-power-failure line condition. The protection device and the loops thereof detection method under the no-power-failure line condition mainly comprises the following steps of carrying out detection of line protection and the loops thereof under the no-power-failure line condition; respectively detecting bilateral line protection and the loops thereof; respectively detecting dually configured two sets of line protection and the loops thereof; comparing the two sets of line protection devices to check current and voltage values; existing a line pilot protection channel to be detected and disconnecting an alternating voltage switch thereof; respectively performing A-phase tripping, B-phase tripping, C-phase tripping and reclosing tests through a method of a test box and the small signal analog quantity; printing a protective action report. According to the protection device and the loops thereof detection ...

Method for inducing continuous separation of copper ions from copper using UV-light source

A method for inducing continuous separation of copper ions from copper using UV-light source, comprising the following steps: (1) cutting apiece of copper into wires or slices for immersing into a vessel containing water; switching on a stirrer for stirring the water continuously and keeping the copper being immersed in the water; (2) turning on the UV-light source for irradiating the copper and the water continuously; appearing a large amount of white precipitate in the water; (3) filtering the solution; detecting the filtered solution, a certain concentration copper ions in the filtered solution are found; adding hydrochloric acid by drops into the unfiltered original solution, the white precipitate is dissolved and copper ions are detected. The invention makes the copper separate out copper ions continuously and can be applied to copper ion disinfection for swimming-pool water, scenic water and cooling water, etc.

Semiconductor device with super-junction structure and manufacturing method thereof

The invention relates to a semiconductor device with a super-junction structure and a manufacturing method thereof. The semiconductor device comprises an element region and a peripheral region positioned on a semiconductor baseplate; the super-junction structure is arranged in the peripheral region, an outermost PN column pair is formed on the outermost side of the peripheral region, and an innermost PN column pair is formed in the adjacent element region; the depth of the outermost PN column pair is smaller than the depth of any other PN column pairs in the peripheral region; the width of the second column of the outmost PN column pair is smaller than the width of the second column of any other PN column pairs in the peripheral region; the depth of any one PN column pair is not larger than the depth of any one PN column pair of the PN column pair and the innermost PN column pair in the direction from the outermost PN column pair to the innermost PN column pair; and the width of the corresponding ...

Method for measuring digital storage oscillographs storage depth

The invention discloses a method for measuring the storage depth of a digital storage oscillograph, which comprises the steps: a. the measured digital storage oscillograph is arranged on a base time threshold which is corresponding to the highest sampling rate in a real-time sampling state, the sparking way is arranged into single sparking; b. a measured signal is input to the measured digital storage oscillograph, and after the single sparking collection is over, according to the displayed time base and the occupied grid numbers of all waveforms on a screen, and according to the formula: the storage depth equals the time base multiplied by the occupied grid numbers of the waveforms multiplied by the highest sampling rate, the storage depth of the measured digital storage oscillograph is obtained. By using the time base threshold setting corresponding to the highest sampling rate in a real-time sampling state and the setting of single sparking, the method for measuring the storage depth ...

Groove-shaped Schottky barrier rectifier and manufacture method thereof

The invention relates to a groove-shaped Schottky barrier rectifier and a manufacture method thereof. The groove-shaped Schottky barrier rectifier comprises a semiconductor base plate, a first conduction type substrate and a first conduction type drift area, wherein one or more grooves extend into the first conduction type drift area from a first main surface and limit one or more platform surface parts; insulating oxidation layers cover the inner walls of the grooves, and first electrodes are deposited in the grooves covered with the insulating oxidation layers; a second conduction type surrounding layer is arranged in the first conduction type drift area, corresponds to the bottoms of the grooves and clads the bottoms of the grooves; a first metal layer is deposited on the semiconductorbase plate and is in ohmic contact with a first electrode phase; the first metal layer and the platform surface parts form a Schottky junction; and a second metal layer covers the second main surfaceof ...

Digital storage oscilloscope with function of time base fine tuning

The invention discloses a digital storage oscilloscope with a function of time base fine tuning, which comprises a high-speed ADC, a data storage device, a processor and a programmable data real-time extraction module, wherein the high-speed ADC outputs acquisition data to the programmable data real-time extraction module to perform real-time extraction, and the extraction proportion is set according to extraction proportion control words from the processor; the acquisition data after the real-time extraction is sent into the data storage device for storage; and the extraction proportion control words are determined by the fine tuning of time base shifts as required. The digital storage oscilloscope adopts a method for performing the real-time extraction on the acquisition data by using the programmable data real-time extraction module so as to change the sampling rate of an acquisition system. In the digital storage oscilloscope, the extraction proportion can be changed by only changing ...

A Liquid-Liquid-Solid Three-Phase Separation Device For Waste Oil

Abstract The invention discloses a liquid-liquid-solid three-phase separation device for waste oil, which comprises an oil bath heating tank, a cyclone separation unit and a desolidification unit. A number of cyclone separation units are arranged in the oil bath heating tank. The cyclone separation unit is fixed in the oil bath heating tank. The desolidification unit is connected with the underflow pipe of the cyclone separation unit, and the desolidification unit is used to separate solid particles in the liquid flowing in from the underflow pipe. The desolidification outer pipe is arranged at the bottom flow end of the cyclone separation unit. The second connector is arranged at the end of the de-solidification outer pipe, and the de-solidification inner pipe is arranged at the underflow port of the underflow pipe to form a de-solidification gap. The invention provides a liquid-liquid-solid three-phase separation device for waste oil, which overcomes the shortcomings of conventional separation ...

Fluid vibration type effusion meter self-adapting FFT power spectrum analysis and signal processing method

The invention discloses a self-adapting FFT power spectrum analytical signal processing method of a vibrating type fluid flowmeter. A signal processing module is arranged between a primary transducer of a flowmeter and a secondary instrument of the flowmeter; an output signal S1 of the primary transducer with noise is input the signal processing module and goes through the FFT power spectrum analytical signal processing by the signal processing module, an effective vibratory impulse signal S3 without noise is output and provided for the secondary instrument of the flowmeter for the flow calculation so as to improve the noise proof property of the flowmeter and reduce the lower limit of the metering. The method of the invention avoids the pace losing and false triggering phenomena of the traditional analog signal processing, overcomes the shortcoming that the traditional single sampling frequency FFT power spectrum analytical method can not be adapted to the high and low frequency metering ...

Topological mapping method for secondary virtual and physical links of intelligent substation

Along with gradual promotion of intelligent substation construction, a virtual secondary link is difficult to be positioned to a physical link in an intelligent substation at present, and a physical transmission path cannot be positioned accurately and quickly when secondary virtual links such as goose, sv and the like break down, thereby resulting in lagging of troubleshooting. The invention discloses a topological mapping method for secondary virtual and physical links of an intelligent substation. According to the invention, a mode of a corresponding relation of the secondary physical links and the secondary virtual links is generated through carrying out extension on an SCD file, a topological search algorithm is provided, and positioning for a path of the transmitted physical link is realized by the virtual link through a method of traversing port spanning trees. The topological mapping method provided by the invention is not affected by network architecture of the substation, a single ...

Insulated gate bipolar transistor (IGBT) with improved terminal and manufacturing method thereof

The invention relates to an insulated gate bipolar transistor (IGBT) with an improved terminal and a manufacturing method thereof. A second partial pressure protection region comprises at least one second conduction type injection region, each second conduction type injection region extends along the direction pointing from a first main face to a second main face in a first conduction type drift region, and adjacent second conduction type injection regions are separated by the first conduction type drift region; each second conduction type injection region comprises at least one partial pressure groove, and each partial pressure groove is positioned in each second conduction type injection region and is distributed along the axial line of each second conduction type injection region; and a first insulated dielectric layer is filled in each partial pressure groove and is covered on the first main face corresponding to a semiconductor substrate. By using the invention, the pressure resistant ...

A Dual-Field Coupled Dewatering Device And A Method For Optimizing Parameters

The present invention discloses a double-field coupled dewatering device and a method for optimizing parameters. The method includes the following steps of: first determining parameters to be optimized; simulating the double-field coupled dewatering devices one by one; determining the optimal value range of each parameter to be optimized according to simulation results; then determining the optimal parameter combination of the parameters to be optimized; simulating the double-field coupled dewatering devices one by one; obtaining the separation efficiency of the double-field coupled dewatering device under different optimization parameter combinations; and determining the optimal optimization parameter combination according to the separation efficiency. The present invention simultaneously considers the influence of a single parameter on the separation efficiency and the influence of interaction between parameters on the separation efficiency, and combines with the double-field coupled numerical simulation results to realize the combined optimization of structure parameters or operation parameters of the double-field coupled dewatering device by using Desing-Expert software for analysis. Further, the present invention can provide a reasonable solution to the parameter matching problem of the coupled dewatering device, and obtain the optimal parameter combination of the double-field coupled dewatering device. 1) Drawings of Descriptions FIG.1 Determine the parameters to be optimized Simulate the dual-field coupled dewateing device one by one according to the parameters to beoptimized Determine the optimal value range of each parameter to be optimized according to simulation results Determine the optimized parameter combination of each parameter to be optimized Simulate the dual-field coupled dewatering device one by one according to theoptimized parameter combination Obtain the separation efficiency of the dual-field coupled dewatering device under different ...

Liquid-liquid-solid three-phase separator for waste oil

Disclosed is a liquid-liquid-solid three-phase separator for waste oil, including an oil-bath heating tank, a plurality of cyclone units and solid removal units. The cyclone units are provided and fixed in the oil-bath heating tank. Each of the solid removal units is connected to an underflow pipe of each of the cyclone units and is configured to separate solid particles. A solid removal outer pipe is arranged at a tail end of the underflow pipe via the first connector; the second connector is arranged at a tail end of the solid removal outer pipe; the solid removal inner pipe is arranged at an underflow outlet of the underflow pipe via the second connector to form a solid removal gap. The invention provides the demulsification and dehydration treatment of waste oil emulsion and the separation of solid particles.

Method for preparing microgel resin and UV-cured contamination resistant coating prepared from microgel resin

The invention discloses a method for preparing microgel resin and a UV-cured contamination resistant coating prepared from the microgel resin. The method comprises the following steps of: initiating room temperature reversible addition fragmentation chain transfer (RAFT) radical polymerization on an iso-bornyl acryl monomer, alkyl methacrylate, a cross-linking agent, a chain transfer agent, a photo initiator and a solvent by using UV-visible light or visible light to synthesize branched polyacrylate; continuously adding fluorine(methyl)-containing acrylate monomers for RAFT block copolymerization to prepare microgel resin taking a fluorine-containing acrylate hydrophobic and oleophobic chain as a shell and the branched polyacrylate as a core; and preparing the UV-cured contamination resistant coating by mixing the microgel resin, other light-cured resin, monomers, the photo initiator and the like. The branched-block fluorine-containing acrylate microgel resin designed and synthesized can ...

Blood separating device and separating method for filtering leucocyte

The invention relates to a blood separation device and a separation method, in particular to a blood separation device and a separation method used for filtrating leucocyte. The blood separation device comprises a piston pump device, a stepping motor and a control used for driving the piston pump device, a separation box, a raw blood bag, a vacuum bag communicated with the liquid conveying outlet of the separation box, and a waste liquid bag which is communicated with the waste liquid outlet of the separation box; the blood separation device and the separation method are characterized in that the inlet and outlet of the piston pump device, the liquid conveying inlet of the separation box and the raw blood bag are communicated with each other by a three-way pipe; the raw blood bag is arranged at high attitude so as to carry out the blood separation; the stepping motor is controlled, the piston rod of the piston pump reciprocates, the blood flows, and the filtrated blood is collected at the ...

Lycoris aurea cultivation method under poplar and lycoris aurea composite cultivation pattern

The invention discloses a lycoris aurea cultivation method under a poplar and lycoris aurea composite cultivation pattern. The lycoris aurea cultivation method comprises the following steps: a timber-oriented poplar forest is selected, wherein the poplar forest has loose and fertile soil, the soil is approximately neutral, and the poplar forest is near a water source; soil preparation and bedding are conducted on poplar forest land; lycoris aurea seedballs are prepared; planting furrows are formed in the poplar forest land which is subjected to soil preparation, wherein the lycoris aurea seedballs are placed in the planting furrows according to row spacing, covered with soil, and finally watered for fixing roots; daily field management is conducted after the lycoris aurea seedballs are planted, wherein the daily field management comprises timely grass gathering in spring and summer, timely fertilization and timely hydrops removal; the lycoris aurea seedballs and fresh cut flowers are harvested ...

Blood separating device and separating method for filtering leucocyte

The invention relates to a blood separation device and a separation method, in particular to a blood separation device and a separation method used for filtrating leucocyte. The blood separation device comprises a piston pump device, a stepping motor and a control used for driving the piston pump device, a separation box, a raw blood bag, a vacuum bag communicated with the liquid conveying outletof the separation box, and a waste liquid bag which is communicated with the waste liquid outlet of the separation box; the blood separation device and the separation method are characterized in thatthe inlet and outlet of the piston pump device, the liquid conveying inlet of the separation box and the raw blood bag are communicated with each other by a three-way pipe; the raw blood bag is arranged at high attitude so as to carry out the blood separation; the stepping motor is controlled, the piston rod of the piston pump reciprocates, the blood flows, and the filtrated blood is collected atthe ...

Methods and apparatus for managing computing deployment in presence of variable workload

Method, device and system for updating resources

The embodiment of the invention discloses a method, a device and a system for updating resources. The method comprises the following steps: acquiring resource index information to be updated in a map area belonging to a current position of a virtual character through a resource manager; and according to the resource index information to be updated, checking whether the local place has a corresponding resource file or not, if so, returning the resource file to a client, otherwise, sending resource update request to a server, and then updating the scene of the map area belonging to the current position of the virtual character through the client by using the received resource file. The method scatters the prior uniform update process, combines an updating process and a gaming process of a user through the virtual character together, avoids the update waiting process before the user enters the game at the same time of not influencing the game progress of the user, and greatly improves user ...

Groove type power MOS device and manufacturing method thereof

The invention relates to a groove type power MOS device and a manufacturing method thereof. The device comprises an active region and a terminal protection region, wherein a first conduction type injection layer and a second conduction type layer pass through the whole terminal protection region, the terminal protection region is in a groove structure, and a first groove is formed in the terminalprotection region; an insulating oxide layer grows on the inner wall of the first groove, a first side wall protector and a second side wall protector are respectively arranged at two sides of the first groove, and the first side wall protector and the second side wall protector are isolated by utilizing an insulating dielectric layer; the first side wall protector is close to the active region, and the second side wall protector is far away from the active region; the first side wall protector is in zero potential; and a second metal layer is arranged above the terminal protection region corresponding ...

Deep-groove power MOS component and manufacturing method thereof

The invention relates to a deep-groove power MOS component and a manufacturing method thereof, wherein a protection ring is of the contact-hole structure; after a contact hole is etched, second conduction type foreign ion implantation and rapid thermal annealing can be carried out on the contact hole, so as to form a second conduction type doping area, so that the contact hole of the protection ring is positioned the second conduction type doping area above a first conduction type epitaxial layer, and the contact hole of the protection ring is filled with a floating metal wire. A layer of silicon nitride is precipitated at a first major surface, side wall protection structures are formed at the two sides of a field silicon oxide layer above the area between a unit cell array and a cutoff ring by adopting the general etching mode, and the protection structures and the filed silicon oxide layer are together taken as a barrier layer for the self-alignment implantation of first conductiontype ...

Ion ultrasonic cleaning method and device thereof

The present invention relates to an ionic ultrasonic cleaning method and its equipment for cleaning industrial article. It is characterized by that an article to be cleaned can be placed in an ultrasonic cleaning tank in which the water is injected, then an electric ion-current is introduced into the ultrasonic cleaning tank, under the synergistic action of electric ion-current and ultrasonic wave the article can be cleaned. Said equipment includes an ultrasonic cleaning tank and an ion beam generation device.

A Method For Determining Optimal Operating Parameters Of Dual-Field Coupled Dewatering Device

The present invention discloses a method for determining optimal operating parameters of a dual-field coupled dewatering device, including the following steps of: comprehensively considering the effects of a swirling flow centrifugal field and a high-voltage electric field; using a computational fluid dynamics method; combining a flow field control equation, an electric field control equation, and a population balance equation; constructing a dynamic coalescence model of emulsified oil droplets under dual-field coupled enhancement, using the population balance model to simulate the coalescence and crushing process of the emulsified droplets in the device; calculating the particle size of the droplets distribution, an average particle size and separation efficiency under different operating parameters, and determining the operating parameters when the coupled device achieves the optimal separation effect. I s 2 3 Lu DiG. FIG.1 FIG. 2

Manufacturing technology of self-binding plastic film and same

The invention relates to the field of a manufacturing technology of a plastic film, discloses a manufacturing technology of a self-binding plastic film and a self-binding plastic film. The manufacturing technology comprises the following steps of: respectively supplying materials to a die head through at least two material channels, wherein the materials for forming an outer layer of the plastic film is self-binding materials and can be dissolved with materials of an adjacent layer; melting the materials in the material channels; carrying out blowing the materials into a film in a coextrusionmode at the die head; and cooling and forming to obtain the formed plastic film. The outer layer of the self-binding plastic film has self-binding performance, and the binding performance is stable and sustained.

Digital storage oscilloscope intelligent triggering method and system

The utility model discloses an intelligent trigger method and system of a digital storage oscilloscope (DSO), belonging to the DSO field. The method comprises a plurality of trigger templates which are edited in self-defined way; each trigger template stores self-defined trigger data; trigger sensitivity and trigger condition are set for each trigger template; the logical relation between the trigger templates is set up; the tested signal data collected by the DSO is compared with the trigger data stored in each trigger template according to the logical relation between the trigger templates and according to the logical relation of the trigger templates; if the two are in the scope of trigger sensitivity and meet trigger condition, a trigger enable signal is produced. With the utility model, the users can set the trigger templates freely, dynamically regulate trigger sensitivity, and trigger all complicated waves.

METHODS AND APPARATUS FOR MANAGING COMPUTING DEPLOYMENT IN PRESENCE OF VARIABLE WORKLOAD

IN-VIVO MICRO-ROBOT FOR NERVE STRETCHING

Disclosed is an in-vivo micro-robot for nerve stretching, comprising a channel, and a movable part and a fixed part located at the channel. The movable part is disposed to be movable along the channel, the movable part sleeves the fixed part and is used for driving the fixed part to move along the channel, and the fixed part is connected to a nerve to be stretched. The in-vivo micro-robot is embedded into a patient's body through surgery, so that the extension of the nerve is accelerated and is regular and quantitative, thereby effectively solving the problems of small probability of nerve self repair and long recovery period in traditional nerve bridging surgery. Drawing i) 3 10b Fig. 1 Ntj Front 18 Rear -10 97 1-11 14 12 44 5 8 Fig. 2 1

Real-time signal reconstruction method for time-interleaved acquisition system

The invention discloses a real-time signal reconstruction method for a time-interleaved acquisition system, which comprises the following steps of: obtaining the estimated inhomogenous degree of sampling interval of each path subjected to K times of iteration by the minimum mean-squared iteration; self-adaptively acquiring the inhomogenous degree rn of the sampling interval of a time-interleaved acquisition system; obtaining an error component e (n) introduced by inhomogenous system time base; and then carrying out real-time signal reconstruction. The method overcomes the defects that the conventional parallel sampling error correction method is large in calculated amount and low in instantaneity and cannot track the changes of error parameters so as to meet the real-time requirements for the application in engineering. The method is a time-domain analysis-based signal reconstruction method which is more suitable to be applied in engineering, and has the advantages of greatly reducing the ...

Real-time monitoring equipment for precast beam steel bar protection layer and monitoring method of real-time monitoring equipment

The invention relates to the technical field of reinforcement protection layers, in particular to a real-time monitoring device and method for a precast beam reinforcement protection layer, and the device comprises a transmitting shell and a receiving shell, the transmitting shell is internally provided with a transmission assembly used for adjusting the monitoring position, and the transmission assembly is fixedly connected with a monitoring assembly. In the prior art, the thickness of a steel bar protection layer is monitored mainly through an electromagnetic induction method, and when a steel bar detector is used for measuring the thickness of the steel bar protection layer in concrete, a probe needs to be manually and slowly moved in the direction perpendicular to the length of a measured steel bar, so that the thickness of the steel bar protection layer is measured. Meanwhile, a tester needs to observe a screen of an instrument all the time, long-time detection consumes large physical ...

Parameter optimization method for double-field coupling dehydrator

A double-field coupling dehydrator and an optimization method for parameters. Parameters to be optimized is determined. Simulations to the double-field coupling dehydrator is carried out according to the parameters to be optimized, individually. Optimal ranges of the parameters to be optimized are determined according to simulation results. Optimized parameter combinations of the parameters to be optimized are determined separately. Separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations are obtained to determine an optimal parameter combination. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency. Based on numerical simulation results of the double-field coupling dehydrator, these influences are analyzed by a software Design-Expert to obtain an optimal parameter combination.

Foil generating machine lead anode fly knife device

The invention relates to a foil generating machine lead anode fly knife device comprising a power source, a drive assembly and a cutter bar assembly, wherein the drive assembly comprises two main driving wheels, a feeding chain wheel, a rotary chain wheel, a revolving drum, a rolling screw rod and a rolling nut. The invention solves the technical problem that the existing foil generating machine lead anode fly knife device has large volume, high processing cost and energy waste. The invention has the advantages of energy saving, small structure, convenient installation and long service life.

可扩展的安全信息处理方法及系统

The present invention discloses one kind of expandable safety information processing method and system. The system is one three-layer structure including user interface layer, processing request converting layer and data layer. The processing request converting layer has rule editing module and rule data, and under the driving of the converting rule, the processing request text is mapped into information processing sentences sent to the data layer. By means of the definition of the mapping relation between data in two domains in the conversion rule set, the general characters of information in safety domain are well embodied. Via editing the rule data, the fast effective expansion of the processing system to new safety equipment and application is realized. The user processing request condition created in the user interface layer is in XML format for easy organization of the user processing request and convenient expansion. Enciphered communication is adopted in different layers.

Special UV type PVD (plating vacuum deposition) primer for improving vibration abrasion resistance

The invention relates to a special UV type PVD (plating vacuum deposition) primer for improving vibration abrasion resistance. The primer comprises the following components in percentage by weight: 20-40 percent of urethane acrylate, 2-10 percent of modified epoxy acrylate, 2-10 percent of thermoplastic acrylic ester, 1-5 percent of auxiliary resin, 5-20 percent of active diluent, 2-5 percent of photoinitiator, 0.2-0.5 percent of flatting agent and 40-60 percent of diluent. The special UV type PVD primer for improving vibration abrasion resistance has the advantages of low cost, high adhesion, excellent construction performance, good oil attachment and good flexibility, and can be widely applied to PC, ABS/PC, ABS and other materials.

Chaotic Frequency Pulsed Electric Field Demulsification Method And System For Waste Oil Emulsion

The present invention discloses a chaotic frequency pulsed electric field demulsification method and system for waste oil emulsion. Firstly, a chaotic frequency pulsed electric field with constant amplitude and equal pulse width is generated by adjusting the chaotic pulse frequency. The chaotic frequency includes the resonant frequency of the emulsion droplet. Then the chaotic frequency pulsed electric field is applied to the waste oil emulsion for demulsification and dehydration. The method for demulsification of waste oil emulsion with chaotic frequency pulsed electric field provided by the invention applies the method of chaotic frequency electric field with constant amplitude and equal pulse width in view of the characteristics of demulsification and dehydration of the pulsed electric field to make up for the shortcoming that the common constant pulsed electric field cannot cover the resonant frequency of the droplet in the emulsified oil. Constant amplitude and equal pulse width can avoid the influence of demulsification efficiency due to the uncertainty of electric field amplitude and pulse width. The chaotic, adjustable and controllable pulse frequency can realize the full coverage of the electric field resonance frequency of the emulsified droplets, give full play to the maximum efficiency of electric field demulsification, and meet the requirements of efficient demulsification and dehydration in the process of industrial waste oil recycling.

Real-time seismic intensity reporting method and system

A method and system for rapidly reporting real time earthquake intensity, the method comprises steps that, systems for rapidly reporting earthquake intensity are arranged in a certain area, a plurality of systems for rapidly reporting the earthquake intensity can obtain the earthquake intensity data based on a tripartial direction accelerometer arranged therein, then the earthquake intensity data can be transmitted to the earthquake intensity rapid reporting center by a communication network to obtain the real-time earthquake intensity distributing information. The invention has low cost, high reliability, few maintenance, can improve the technical levels of real time transmission and instant publication of the earthquake intensity information and the rapid response capability of the earthquake emergent rescue, meanwhile the invention is contribute to the objective and scientific evaluation for the disaster condition after earthquake.

Method for measuring digital storage oscillographs storage depth

The invention discloses a method for measuring the storage depth of a digital storage oscillograph, which comprises the steps: a. the measured digital storage oscillograph is arranged on a base time threshold which is corresponding to the highest sampling rate in a real-time sampling state, the sparking way is arranged into single sparking; b. a measured signal is input to the measured digital storage oscillograph, and after the single sparking collection is over, according to the displayed time base and the occupied grid numbers of all waveforms on a screen, and according to the formula: thestorage depth equals the time base multiplied by the occupied grid numbers of the waveforms multiplied by the highest sampling rate, the storage depth of the measured digital storage oscillograph is obtained. By using the time base threshold setting corresponding to the highest sampling rate in a real-time sampling state and the setting of single sparking, the method for measuring the storage depth ...

Computer CPU push-button with security features

Combined electric power generation multipurpose machine

The invention discloses a combined electric power generation multipurpose machine, which is formed by combining one or more unit motors. Each unit motor consists of two rotors and two stators; the rotor is firmly fixed to a shell or an end cover; an air gap is formed between the rotor and the stator; the rotors are circular; a stator core is wound on an armature windings; the armature windings are connected in series with one another; and the shell is connected with a main shaft through a circular bearing. The combined electric power generation multipurpose machine has small volume and high power, can be combined optionally, runs under different voltages and currents and can use a plurality of unit motors in the unit motors for power generation and the other unit motors for electric driving. The stator and the rotor can be combined optionally according to requirements, so the application range is wide.

Groove type power MOS device with improved terminal protective structure

The invention relates to a groove type power MOS device, in particular to a groove type power MOS device with an improved terminal protective structure. A cellular area which is arranged on a semiconductor base plate and a terminal protective structure are arranged on the overlook surface of the MOS device, the cellular area comprises a plurality of cellulars which are connected in parallel and is arranged in the centre area of the semiconductor base plate; the terminal protective structure is arranged at the periphery of the cellular area, and the cellulars in the cellular area are connectedto a whole body in parallel by an electro-conductive polycrystalline silicon which is arranged in the groove; the terminal protective structure comprises a partial pressure area which is arranged in the inner circle of the terminal protective structure and a cut off protective area which is arranged in the outer circle of the terminal protective structure; the partial pressure area adopts a groove structure ...

Oscilloscope high speed signal reconstruction method

Hot stamping equipment applied to automobile plastic lamp

The invention relates to hot stamping equipment applied to an automobile plastic lamp, the hot stamping equipment comprises a workbench, a material carrying seat, a material conveying mechanism, a clamping mechanism, a feeding and discharging mechanism, a hot stamping mechanism and a scraping rod mechanism, the material conveying mechanism is transversely arranged on the workbench, the material conveying mechanism comprises two conveying belt assemblies which are distributed left and right, and the feeding and discharging mechanism is arranged in the middle of the material conveying mechanism; the feeding and discharging mechanism is located between the two conveying belt assemblies. A hot stamping support is arranged on the workbench, a hot stamping mechanism is arranged at the upper end of the hot stamping support, a material carrying seat is horizontally and rotationally arranged at the lower end of the inner side of the hot stamping support and located above the feeding and discharging ...

Method for continuously separating out copper ions from copper body under induction of ultraviolet light source

The invention discloses a method for continuously separating out copper ions from a copper body under the induction of an ultraviolet light source. The method comprises the steps of (1) shredding or slicing the copper body, then soaking the copper body into a water container, starting a stirrer to continually stir a water body and keeping the copper body soaked into the water body all the time; (2) turning on the ultraviolet light source to continuously irradiate the water body, wherein white precipitate may appear in the water; (3) filtering, detecting that the filtrate contains the copper ions with certain concentration, and dripping hydrochloric acid into the unfiltered stock solution, wherein if the white precipitate is dissolved, the copper ions are detected. By adopting the ultraviolet light source for irradiating, the copper ions are continuously separated out from the copper body, so that compared with copper electrolysis, the method disclosed by the invention is simpler and more ...

安全信息处理请求转换系统

The safety information processing request conversion system adopts one kid of regular drive work mode, and it has user processing request conversion module to convert the user processing request in XML format into user request target sending to the regular matching module and the regular matching module to call assembling algorithm for regularity assembling according to the system node target matching the business node of user request target to form system processing request for safety information processing. It can also support new safety equipment or applied safety information processing in powerful expansion capacity. Before processing, the safety information processing regulation for the equipment or application is customized in regulation editing module into regulation data stored in memory. During processing, the user processing request of safety information processing may be converted easily into system processing request.

Method for preparing microgel resin and UV-cured contamination resistant coating prepared from microgel resin

The invention discloses a method for preparing microgel resin and a UV-cured contamination resistant coating prepared from the microgel resin. The method comprises the following steps of: initiating room temperature reversible addition fragmentation chain transfer (RAFT) radical polymerization on an iso-bornyl acryl monomer, alkyl methacrylate, a cross-linking agent, a chain transfer agent, a photo initiator and a solvent by using UV-visible light or visible light to synthesize branched polyacrylate; continuously adding fluorine(methyl)-containing acrylate monomers for RAFT block copolymerization to prepare microgel resin taking a fluorine-containing acrylate hydrophobic and oleophobic chain as a shell and the branched polyacrylate as a core; and preparing the UV-cured contamination resistant coating by mixing the microgel resin, other light-cured resin, monomers, the photo initiator and the like. The branched-block fluorine-containing acrylate microgel resin designed and synthesized can ...

Patching method and patching device under multi-core environment

The embodiment of the invention provides a patching method and a patching device under multi-core environment; the patching method comprises the steps of sending internuclear non-maskable interrupt toeach target-virtual CPU of a shared code segment target-virtual CPU group so as to cause the target-virtual CPUs to respond to the internuclear non-maskable interrupt and enter a patching synchronization state, monitoring the patching synchronization state of the target-virtual CPUs, changing the first command of the patched primitive function of the target-virtual CPUs into an abnormal command after all target-virtual CPUs enter the patching synchronization state, and outputting an notice on the finishing of the patching synchronization state to all target-virtual CPUs so as to shift the patched primitive function to a new patching function while the patched primitive function is executed to an abnormity handling process triggered by the abnormal command. The method and the device adoptthe ...

Semiconductor element with improved terminal and manufacturing method thereof

The invention relates to a semiconductor element with an improved terminal and a manufacturing method thereof. A terminal protection area of the element comprises a first flute, wherein a first insulating medium layer is filled in the first flute, and a second insulating medium layer is arranged on the first flute and covers the notch of the first flute and the terminal protective area; a first metal layer covers the second insulating medium layer above the first flute, and is connected with a gate metal or source metal so as to keep a zero electric potential when an MOS element is a reverse blocking state; the first flute is provided with three wire holes corresponding to the side away from an active area, a second metal layer covers the second insulating medium layer and is filled in the three wire holes; and the second metal layer is connected with a first conductive substrate layer by a second conductive layer to form an equipotential. The element has the advantages that: the pressure ...

Electrolytic solution for preparing nano ceramic coatings by micro-arc oxidation

The present invention provides an electrolyte used for preparing a nano-ceramic coating by micro-arc oxidation, as well as a method utilizing the electrolyte to conduct the surface treatment to aluminum or aluminum alloy surface for acquiring the nano-ceramic coating. The electrolyte is added with 0.2 to 1.0g/L of Al2O3 nano-powder. The Al2O3 nano-powder has a particle diameter of 10 to 50nm. The nano-ceramic coating material and the method for the production thereof mainly have the advantages of: (1) rather smooth surface of the prepared nano-ceramic coating and reduced roughness; (2) rather even distribution of micro-hardness; and (3) low-priced and common materials, simple process, low cost and being favorable for the industrialized production.

Microprojectile composite mortar

The invention discloses microprojectile composite mortar which is used for ground leveling before a floor is paved. Gypsum powder, and polyethylene particles which are used as main materials and silicate, triple superphosphate, drying agent, and gelatine powder which are used as auxiliary materials are mixed to form a ground leveling material with a microprojectile effect. The bearing load of the original building foundation can be reduced; noises between floors can be reduced; when feet of a human body touch the floor, the feet can feel flexible, and soft; and the microprojectile composite mortar has the heat insulation and damp proofing effect on the conventional building.

Method for fast eliminating disulfide ester end groups of RAFT polymers

The invention discloses a method for fast eliminating disulfide ester end groups of RAFT polymers, which comprises the following steps: adding an RAFT polymer solution and light triggers into a reaction vessel according to the mol ratio of 1/1 to 2.5; and carrying out photochemical reaction under the ultraviolet-visible light irradiation for the eliminating disulfide ester end groups of the RAFT polymers, wherein the RAFT polymers are vinyl homopolymerors or vinyl copolymers containing the disulfide ester end groups. The invention can solve the problem of each damage of functional groups suchas epoxy functional groups, estolide functional groups and the like when nucleophilic reagents such as primary amine, secondary amine and the like are used for eliminating the disulfide ester end groups of the RAFT polymers with active functional groups such as epoxy functional groups, estolide functional groups and the like at the room temperature.

Digital storage oscilloscope intelligent triggering method and system

The utility model discloses an intelligent trigger method and system of a digital storage oscilloscope (DSO), belonging to the DSO field. The method comprises a plurality of trigger templates which are edited in self-defined way; each trigger template stores self-defined trigger data; trigger sensitivity and trigger condition are set for each trigger template; the logical relation between the trigger templates is set up; the tested signal data collected by the DSO is compared with the trigger data stored in each trigger template according to the logical relation between the trigger templates and according to the logical relation of the trigger templates; if the two are in the scope of trigger sensitivity and meet trigger condition, a trigger enable signal is produced. With the utility model, the users can set the trigger templates freely, dynamically regulate trigger sensitivity, and trigger all complicated waves.

Silicon aluminum based mesoporous-microporous composite molecular sieve and synthetic method thereof

The invention provides a novel silicon aluminum based mesoporous-microporous composite molecular sieve and a synthetic method thereof. The composite molecular sieve is obtained by adopting a silicon source and an aluminum source to stir for appropriate time under the action of a template agent to realize the crystallization and performing a one-step rapid synthetic method, and has regular mesopore and micropore structures at the same time. Methods such as XRD are utilized to characterize a synthetic molecular sieve structure, and can display that the synthetic molecular sieve has the regular mesopore and micropore structures. The mesoporous-microporous composite molecular sieve can be taken as a catalytic material, and is suitable for catalytic reactions in which macromolecules is involved.

Method and system for realizing load balance

An embodiment of the invention discloses a method and a system for realizing load balance, wherein, the method is applied to a server cluster composed of at least two servers, including the following steps: receiving the load report transmitted by the servers of the server cluster, wherein, the load report contains calculating unit number loaded on the server and/or calculating unit number of eachmap area on the server; confirming a to-be-moved server and a coordinating server corresponding to the to-be-moved server after the overload server is judged according to the load report; and sendinga moving order to the to-be-moved server and the coordinating server and receiving the moving result returned by the coordinating server. The method reduces the load of the overload server, avoids breakdown of the overload server due to long-time overloading, and then avoids breakdown of the whole server cluster due to overloading of one or several servers of the server cluster.

Recycling method of wastewater with hydroquinone and alkali metal salt thereof

The invention discloses a recycling method of wastewater with hydroquinone and alkali metal salt thereof. The method comprises the following steps: (1) adding antioxidant, decoloring agent and precipitation promoter in the wastewater with hydroquinone and alkali metal salt thereof; under the protection of inert gas, stirring evenly, heating for boiling, stirring and refluxing to ensure that the wastewater is decolored and becomes clear; (2) cooling the clear liquid, performing suction filtering, filtering the decoloring agent, performing vacuum dewatering to the filtrate to obtain hydroquinone water concentration liquid; and (3) cooling the hydroquinone water concentration liquid for crystallization, and performing suction filtering to the crystalline liquid to obtain hydroquinone. The method of the invention can comprehensively utilize various substances in the wastewater and have high recovery rate of hydroquinone, thus the average per-pass conversion rate of hydroquinone in the wastewater ...

Lycoris radiata cultivation method in composite populus and lycoris radiate cultivation mode

The invention discloses a lycoris radiata cultivation method in a composite populus and lycoris radiate cultivation mode. The method comprises the following steps: selecting a material populus woodland which is loose and fertile in soil, neutral in soil quality and near a water source, preparing and bedding the populus woodland, preparing lycoris radiata seedballs, covering the seedballs with soil, and finally watering to fasten the roots, wherein the daily management after the planting comprises weeding in time in spring and summer seasons, fertilizing in appropriate time, removing accumulated water, and harvesting the seedballs and flowers of the lycoris radiata in appropriate time. By the adoption of the lycoris radiata cultivation method in the composite populus and lycoris radiata cultivation mode, respective biologic characteristics of populus and lycoris radiata can be brought into play, biologic conditions of optical energy, thermal energy, space and the like in the woodland can ...

Method for testing digital oscilloscope waveform capturing rate

The invention discloses a test method of digital oscilloscope waveform capture rate, including: 1, inputting a double pulse signal to a digital oscilloscope, wherein, the waveforms of the two pulses are different, and the trigger time interval between them can be continuously adjustable, the time interval between the two pulses can display the two pulses simultaneously; 2, continuously regulating(shortening or increasing) the time interval between the two pulses until the second pulse of the two pulses just clears away or appears, at this point, the inverse number of the time interval between the two pulses is the maximum waveform number that can be captured by the digital oscilloscope, namely the waveform capture rate. The invention adopts the periodic double pulse signal, and continuously regulates (shortens or increases) the time interval between the two pulses of the double pulse signal until the second pulse of the two pulses just clears away or appears, thereby the waveform capture ...

Method and system for cooperative remote batch calling of master station and substation of relay protection system

The invention discloses a relay protection system master station and substation cooperative remote batch calling method and system, and the method comprises the steps: carrying out the editing of a master station according to a substation remote batch calling plan, and obtaining a master station remote batch calling plan; the substation performs conflict check on the received remote batch call plans of the master station, and the remote batch call plans of the master station, which are qualified in conflict check, serve as agreed remote batch call plans; according to an agreed remote batch calling plan, the master station executes a calling task, and the substation responds to the calling task; and when the substation responds to the calling task, the substation verifies the calling task of the master station according to the agreed remote batch calling plan, and when a batch calling task in the non-agreed remote batch calling plan is found, an alarm prompt is given. According to the invention ...

Method, device and system for tracking water body organisms on basis of three-dimensional image analysis

The invention relates to a method, a device and a system for tracking water body organisms on the basis of three-dimensional image analysis. The water body organisms move in an x-y-z three-dimensional space and a camera only monitors on an x-y plane, and thus, when x-y coordinates of the water body organisms are the same, but z coordinates of the water body organisms are different, the crossing phenomenon is generated. Aiming at the crossing phenomenon, according to the invention, three groups of cameras are adopted to respectively shoot on three planes; shot images are transmitted to a computer; the x-y plane is mainly analyzed; when the number of clusters identified on the x-y plane is smaller than that of prestored clusters, a crossing false identification algorithm is started, y-z plane information and x-z plane information are analyzed so as to determine which x-y plane cluster is formed by a plurality of water body organisms, and different IDs (Identities) in the cluster are identified ...

Dewatering device is united to three portable lubricating oil

The utility model discloses a dewatering device is united to three portable lubricating oil, including the frame, be equipped with voltage -sharing feed distributor and several swirler on the frame, swirler links to each other with voltage -sharing feed distributor simultaneously, whirl intracavity in swirler is equipped with the pulse electrode, the swirler bottom links to each other with underflow buffer container, and its upper portion links to each other with overflow buffer container, overflow buffer container links to each other with strainer, heater and real empty can in proper order, a real empty can and a vacuum pump link to each other, still include a nitrogen gas generator, the nitrogen gas generator is continuous with real empty can's bottom behind the nitrogen gas admission valve. The utility model discloses mechanical impurities in can not only desorption lubricating oil, moisture, gas etc. Still have better adaptation to third phase emulsion complicated in the lubricating ...

Method for synthesizing fenoxaprop-p-ethyl

The invention discloses a method for synthesizing fenoxaprop-p-ethyl. The method comprises the following steps of: (1) dissolving 2,6-dichlorobenzoxazole and R-(+)-2-(4-hydroxyphenoxy) propionic ester in hydrophilic organic solvent to obtain a first mixture; (2) adding solution of sodium chloride into the first mixture, and stirring uniformly to obtain a second mixture; (3) adding deacid reagent into the second mixture, stirring and mixing, and preserving heat and reacting; and (4) removing a water layer, evaporating to remove an organic layer, separating out a crude product, and recrystallizing to obtain the fenoxaprop-p-ethyl. A hydrophilic organic phase/salt containing aqueous system is used for synthesizing the fenoxaprop-p-ethyl, the problems that raw materials and potassium carbonate are not contacted fully in the anhydrous reaction or non-hydrophilic organic solvent reaction and the reaction speed is low are avoided, and the problem that the quality is influenced by too quick decomposition ...

Conference telephone device

Recycling method of wastewater with hydroquinone and alkali metal salt thereof

The invention discloses a recycling method of wastewater with hydroquinone and alkali metal salt thereof. The method comprises the following steps: (1) adding antioxidant, decoloring agent and precipitation promoter in the wastewater with hydroquinone and alkali metal salt thereof; under the protection of inert gas, stirring evenly, heating for boiling, stirring and refluxing to ensure that the wastewater is decolored and becomes clear; (2) cooling the clear liquid, performing suction filtering, filtering the decoloring agent, performing vacuum dewatering to the filtrate to obtain hydroquinone water concentration liquid; and (3) cooling the hydroquinone water concentration liquid for crystallization, and performing suction filtering to the crystalline liquid to obtain hydroquinone. The method of the invention can comprehensively utilize various substances in the wastewater and have high recovery rate of hydroquinone, thus the average per-pass conversion rate of hydroquinone in the wastewater ...

Dried calibration method and apparatus of portable electromagnetic flowmeter

The invention provides a dry calibration method and the device for the portable electromagnetic flow meter. The device comprises a measuring paper which is arranged with hall sensor array, a measuring control module and a portable computer. The measuring paper is pasted to the inner wall of the electromagnetic flow meter pipe. The computer controls the measuring paper through the measuring control module to obtain the normal flux density distribution information of the pipe inner wall, and furthermore, combining with the geometries of the electrode and the pipe and the flow rate distribution information, and by using the computer program compiled based on dry calibration methematical model, the once sensor conversion coefficient can be calculated, and so the once sensor dry calibration of the electromagnetic flow meter can be realized. The size of the measuring paper can be adjusted by cutting or assembling, which leads that the device can be applied in the electromagnetic flow meter with ...

Preparation of acrylon nano fiber membrane carrier materials and use thereof

Channel bias adjustment circuit of broadband digital oscilloscope

The invention discloses a channel bias adjustment circuit of a broadband digital oscilloscope. A coupling capacitor C1 and a resistor R4 are combined to form a high pass signal path; the high-frequency signal component of a detected input signal is output by the capacitor C1 and the resistor R4; resistors R2 and R3 perform voltage division on a low-frequency signal component in the detected input signal, the low-frequency signal component is output through a resistor R5 at the output end of a low-noise high-precision operational amplifier after being subjected to superposition and subtraction with bias adjustment voltage Vadj. As the high-frequency signal component and the low-frequency signal component in the detected input signal are divided into different paths, the high-frequency signal component is directly output by the coupling capacitor C1 and the resistor R4; while only the low-frequency signal component can be subtracted from the bias adjustment voltage Vadj through the low-noise ...

Trench large-power MOS part and manufacturing method thereof

The invention relates to a trench large-power MOS part and a manufacturing method thereof. The trench large-power MOS part comprises a cellular region and a terminal protection structure which are arranged on a semiconductor substrate on an overlook plane of the MOS part, wherein the cellular region is arranged at the central region of the semiconductor substrate, and the terminal protection structure is arranged on the periphery of the cellular region; the cellular region adopts a trench structure, and unit cells inside the cellular region are connected with each other in parallel to form a whole through an electrically-conductive polycrystalline silicon inside the cellular trench; the terminal protection structure comprises a voltage division protection region which is arranged at the inner circle and a stoppage protection region at the outer circle; a main node and at least one voltage division ring are arranged inside the voltage division protection region, so the voltage resistance ...

B2B surface generation method and device based on coordinate transformation

The invention provides a B2B surface generation method and device based on coordinate transformation, and belongs to the technical field of turbomachinery post-processing. The method comprises the steps that coordinates of all points of an impeller geometric entity in a Cartesian coordinate system are converted into coordinates in a cylindrical coordinate system; converting coordinates of each point of the geometric entity of the impeller in the cylindrical coordinate system into coordinates in a normalized coordinate system; under the normalized coordinate system, enabling the infinite plane to intersect with the geometric entity of the impeller under the normalized coordinate system to obtain a plane B2B surface; and the plane B2B surface is converted into a rotary B2B surface. According to the method, the complex rotation B2B surface is converted into the simple B2B plane through coordinate conversion, intersection of the complex rotation surface and the geometric entity is converted ...

Novel multifunctional handle

The invention relates to a novel multifunctional lifting handle, which comprises a handle (1). Two ends of the handle (1) are provided with two hooks (2) which are positioned at the same plane with the handle (1). The two hooks are hooked on two corresponding bale handles of an object or a package, thus the object can be lifted easily by one hand grasping the handle to solve the problem of hand uncomfortableness. One face of the handle can be used for advertisement. The mould is similar to a folk Qiaoguo mould, and the lifting handle can be designed into a bat shape on the whole, thereby subtly integrating the traditional culture with daily goods, and endowing the lifting handle with culture; therefore, the lifting handle has values of storage and appreciation.

Method for preparing fenoxaprop-p-ethyl

The invention discloses a method for preparing fenoxaprop-p-ethyl, which comprises the following steps: (1) dissolving 2,6-dichlorobenzoxazole and ethyl R-(+)-2-(4-hydroxyphenoxy)propionate in an organic solvent; (2) adding an acid binding agent, uniformly stirring, adding a main catalyst and a phase transfer catalyst, uniformly stirring and keeping temperature for reaction; (3) after the reaction is finished, removing a water layer, distilling an organic layer under reduced pressure, precipitating a coarse product and recrystallizing to obtain fenoxaprop-p-ethyl. In the invention, a composite phase transfer catalysis system is used as a catalyst for the etherification reaction for forming fenoxaprop-p-ethyl, the catalysis system has very high catalytic activity and can effectively lower reaction temperature and make etherification reaction conditions milder, and the prepared fenoxaprop-p-ethyl product is obviously improved in yield and purity.

Equivalent sampling device

Apparatus for preparing ceramic coat on gas flowmeter worm-gear surface

The invention provides a device for preparing a ceramic coating on the worm wheel surface of a gas flowmeter, comprising a power cabinet, an operating table, a working groove and a heat exchanger, wherein, a stainless steel container with a cooling device is taken as a cathode, an anode comprises a circular disc-shaped flowmeter and an aluminium rod used for hanging the flowmeter, the cathode and the anode are connected with a DC constant power supply, the aluminium rod is connected with the flowmeter through a connecting piece which consists of a small end and a big end, the small end of the connecting piece has a taper surface at the front end and is connected with the flowmeter, the big end of the connecting piece is subject to oxidizing on the surface and is connected with the aluminium rod, the small end of the connecting piece is inserted into a blind hole of the flowmeter, the blind hole is sealed by the taper surface, and the big end is connected with the aluminium rod through threads ...

Electromagnetic energy conversion method and structure thereof using permeability magnetic material as winding

The invention relates to an electromagnetic energy conversion method and a structure thereof using permeability magnetic materials as windings, which comprise the following steps that: the permeability magnetic material sheets which are insulated from each other are tightly wound on an iron core, or are tightly filled into an iron core trunking, and the permeability magnetic material sheets are connected into a return circuit through conductors, so that permeability magnetic material sheets realize the double functions of guiding magnetic flow in a magnetic circuit and guiding current in a circuit. The invention has unique idea, and breaks through the traditional design idea; since the permeability magnetic material sheets are used as permeability magnetic materials, have the characteristic of conduction, and can be used to replace copper conductors to be as windings, so copper material can be greatly saved; and the same time, since the iron core trunking is internally tightly fully embedded ...

Method and system for realizing load balance

An embodiment of the invention discloses a method and a system for realizing load balance, wherein, the method is applied to a server cluster composed of at least two servers, including the following steps: receiving the load report transmitted by the servers of the server cluster, wherein, the load report contains calculating unit number loaded on the server and/or calculating unit number of each map area on the server; confirming a to-be-moved server and a coordinating server corresponding to the to-be-moved server after the overload server is judged according to the load report; and sending a moving order to the to-be-moved server and the coordinating server and receiving the moving result returned by the coordinating server. The method reduces the load of the overload server, avoids breakdown of the overload server due to long-time overloading, and then avoids breakdown of the whole server cluster due to overloading of one or several servers of the server cluster.

Multifunctional tester

Method for testing digital oscilloscope waveform capturing rate

The invention discloses a test method of digital oscilloscope waveform capture rate, including: 1, inputting a double pulse signal to a digital oscilloscope, wherein, the waveforms of the two pulses are different, and the trigger time interval between them can be continuously adjustable, the time interval between the two pulses can display the two pulses simultaneously; 2, continuously regulating(shortening or increasing) the time interval between the two pulses until the second pulse of the two pulses just clears away or appears, at this point, the inverse number of the time interval betweenthe two pulses is the maximum waveform number that can be captured by the digital oscilloscope, namely the waveform capture rate. The invention adopts the periodic double pulse signal, and continuously regulates (shortens or increases) the time interval between the two pulses of the double pulse signal until the second pulse of the two pulses just clears away or appears, thereby the waveform capture ...

Volume correction instrument with wireless data transmission function

The invention discloses a volume correction instrument with wireless data transmission function, comprising a casing, a pressure sensor interface, a temperature sensor interface and a processor for corrective computation according to a pressure signal, a temperature signal and a flow quantity signal, wherein the pressure sensor interface and the temperature sensor interface are arranged on the casing, the processor is positioned within the casing which is provided with a display window for displaying correction values; the volume correction instrument further comprises a GPRS/GSM communication module and a radio frequency communication module, the casing is equipped with a radio frequency antenna and a GPRS/GSM antenna, both the GPRS/GSM communication module and the radio frequency communication module are connected with the processor, the GPRS/GSM communication module is also connected with the GPRS/GSM antenna and the radio frequency communication module is also connected with the radio ...

Method for rapid positioning variation influence scope of secondary virtual loop of intelligent transformer station

The invention discloses a method for rapid positioning variation influence scope of a secondary virtual loop of an intelligent transformer station. The method includes setting IED naming standard for SCD, obtaining IED types and interval information according to the naming standard, positioning nodes of the secondary virtual loop, building a secondary virtual loop information AC model, extracting partial GSE/SV publishing and subscribing related information of IED process layer in SCD, calculating CRC check code, obtaining IED model check codes, comparing CRC code value of IED model before and after SCD upgrading and CRC code value of the interface thereof, generating an CRC switch of an apparatus-level layer and an CRC switch of an interface-level layer, and rapidly positioning influence scope by combining the interval flowing chart of the secondary virtual loop. The method realizes rapid positioning the influence of SCD variation on the secondary virtual loop, steps are not strongly dependent ...

Method, device and system for updating resources

The embodiment of the invention discloses a method, a device and a system for updating resources. The method comprises the following steps: acquiring resource index information to be updated in a map area belonging to a current position of a virtual character through a resource manager; and according to the resource index information to be updated, checking whether the local place has a corresponding resource file or not, if so, returning the resource file to a client, otherwise, sending resource update request to a server, and then updating the scene of the map area belonging to the current position of the virtual character through the client by using the received resource file. The method scatters the prior uniform update process, combines an updating process and a gaming process of a user through the virtual character together, avoids the update waiting process before the user enters the game at the same time of not influencing the game progress of the user, and greatly improves user ...

Electrolytic solution for preparing nano ceramic coatings by micro-arc oxidation

The invention provides an electrolyte used for preparing a nano-ceramic coating by micro-arc oxidation, as well as a method utilizing the electrolyte to conduct the surface treatment to aluminum or aluminum alloy surface for acquiring the nano-ceramic coating. The electrolyte is added with 0.2 to 1.0g/L of Al2O3 nano-powder. The Al2O3 nano-powder has a particle diameter of 10 to 50nm. The nano-ceramic coating material and the method for the production thereof mainly have the advantages of: (1) rather smooth surface of the prepared nano-ceramic coating and reduced roughness; (2) rather even distribution of micro-hardness; and (3) low-priced and common materials, simple process, low cost and being favorable for the industrialized production.

Dynamic loss balancing method for solid state disk

The invention discloses a dynamic loss balancing method for a solid state disk, which is characterized in that: an array list with two pointers and an overturn flag bit is arranged; array elements in the list store erasing times of a space block and physical block address information; a pointer 1 and a pointer 2 point at the recently updated array elements equal to the threshold of the erasing times and the array elements lower than the threshold of the erasing times respectively; and the overturn flag bit overturns in odd and even times. The dynamic loss balancing method for the solid state disk comprises two types of operation: the information is added into a space block array list when the data is erased; and the block information is deleted from the space block array list when the data is written. The operation of adding the block information into the space block array list when the data is erased comprises the following steps of: comparing the threshold; shifting a corresponding pointer ...

Frequency-beating device for laser frequency measurement

The invention relates to a frequency-beating device for laser frequency measurement, which belongs to the technical field of photoelectrons and comprises a first collimation positioning aperture diaphragm, a second collimation positioning aperture diaphragm, a third collimation positioning aperture diaphragm, a fourth collimation positioning aperture diaphragm, a fifth collimation positioning aperture diaphragm, a sixth collimation positioning aperture diaphragm, a seventh collimation positioning aperture diaphragm, an eighth collimation positioning aperture diaphragm, a first totally-reflecting mirror, a second totally-reflecting mirror, a third totally-reflecting mirror, a fourth totally-reflecting mirror, a first half-wave plate, a second half-wave plate, a polarization light-splittingprism, a Glan prism, a raster, a silver mirror, a ninth adjustable-aperture aperture diaphragm, a gathering lens, an avalanche diode, a low-noise amplifier, a band-pass filter, a one-dimensional mobile ...

Temperature effect test method and apparatus for seismographic observation instrument

A temperature effect test method and apparatus for seismographic observation instrument is used for thermostatic control and temperature characteristic measurement of the seismographic observation instrument, the method comprises steps that: the seismographic observation instrument is arranged in a temperature control tank, the temperature in the temperature control tank is acquired in real time by a temperature detection sensor, then the thermostatic control of the temperature control tank is implemented by heating and refrigerating the heating and refrigerating elements, the heating and refrigerating element comprises a semiconductor refrigeration device, the temperature effect test method and apparatus for the seismographic observation instrument can create good temperature observation environment for the seismographic observation instrument, and has small measuring value interference degree for the seismographic observation instrument, can implement the low noise and no vibration temperature ...

FPGA configuration file update device

The invention discloses a field-programmable gate array (FPGA) configuration file update device. A microprocessor/microcontroller imports an FPGA configuration file from an external memory through a universal plug and play interface, and transmits the FPGA configuration file to an FPGA chip; the FPGA chip converts the FPGA configuration file into a data format capable of being identified by a nonvolatile memory, transmits the converted FPGA configuration file to the nonvolatile memory for storage, and updates the FPGA configuration file; and after a digital system is electrified again, the FPGA chip automatically reads the updated configuration file stored in the nonvolatile memory to realize automatic loading and normal operation. In the device, only when the FPGA configuration file needs to be updated, a new FPGA configuration file is written into the nonvolatile memory so as to realize the requirement of online configuration; and meanwhile, the microprocessor/microcontroller provides ...

Method and apparatus for coating nano ceramic composite coating on gas flowmeter

The invention provides a method for coating a nano ceramic combined coat on a gas flowmeter, comprising the following steps that: a stainless steel container with a cooling device is taken as a cathode; a Na2B4O7.10H2O water solution with a concentration of 15g/l is used to prepare a processing liquid; an aluminium rod is polished by sand paper to an appropriate size and is connected to the gas flowmeter; an insulating rubber sleeve is sleeved on the part of the aluminum rod immersed inside the groove liquid; a workpiece is immersed inside the processing liquid, power is provided for the aluminium rod in a way of constant current, the current density is 10A/dm<2>, and the microarc oxidation time is 60 minutes, etc. The device of the gas flowmeter coated with the nano ceramic combined coat comprises the stainless steel container with the cooling device, a DC constant power supply, a circular disc-shaped flowmeter, and an aluminium rod connected with the flowmeter, wherein, the aluminium ...

Broadband ocean bottom seismograph

The invention discloses a broadband ocean bottom seismograph comprising two protecting shells and a connecting plate, wherein the two protecting shells are respectively fixed on both ends of the connecting plate; a sealed instrument storehouse ball and a sealed battery storehouse ball are respectively installed in the two protecting shells; a battery and an acoustic communication circuit are installed in the battery storehouse ball; two sealed storehouse balls are electrically connected by a cable; a gimbal for keeping the seismograph in a level state is arranged in the instrument storehouse ball and provided with a data collector and a seismograph; an electro erosion releasing mechanism for releasing a coupling frame is fixed on the connecting plate; the coupling frame for supplying downforces for the seismograph is positioned below the connecting plate and connected with the electro erosion releasing mechanism by wire ropes; and a weighting frame is connected below the coupling frame ...

Non-embedding image steganography method and device based on double dynamic mapping

The invention provides an embedding-free image steganography method and device based on dual dynamic mapping, and belongs to the technical field of information security, and the method comprises the steps: constructing a dual dynamic mapping relation between secret information and a random noise vector; according to the dual dynamic mapping relation, obtaining a secret-containing image generation seed corresponding to target secret information; the secret-containing image generation seed is a random noise vector corresponding to the target secret information; and inputting the secret-containing image generation seed into a pre-established non-embedded image steganography model so as to carry out non-embedded image steganography. According to the embedding-free image steganography method and device based on double dynamic mapping, double dynamic transformation is achieved through one-to-many dynamic mapping of the secret information and the random noise vector and dynamic switching of the ...

Knife grinder with fixing angle

The hand knife sharpener with fixed angle between the whetstone and the knife has fixture to fix the knife edge. The steel wire is made to penetrate through the positioning holes on two sides of the fixture to determine the sharpening angle. The positioning holes and the edge line define one plane and the whetstone moves always in this plane, so as to ensure the sharpened edge is in the plane. Grasping the whetstone to move reciprocally can grind the knife edge into plane.

Diamond impregnated segment with tooth cavities

The invention relates to a diamond impregnated segment with one to five tooth cavities, comprising one to five cutting elements and a segment body. The cutting elements are inserted into the tooth cavities arranged in one side of the segment body. The tooth cavities are as many as the cutting elements. The tooth cavities are in one or multiple of shapes, such as cylinder, sector column, wedge, hexahedron, elliptic cylinder and prism; the cutting elements matching with the tooth cavities are also in one or multiple of the shapes, such as cylinder, sector column, wedge, hexahedron, elliptic cylinder and prism. The diamond impregnated segment is applied to the center of a diamond impregnated bit, is low in linear speed and generates little heat; the cutting elements can run normally; the cutting elements coordinate with the diamond impregnated segment, allowing double safety, coring of the diamond impregnated bit is well prevented, and drilling footage can be increased. The diamond impregnated ...

Three-dimensional waveform real-time display method and system

This invention discloses a kind of wave-shape real time display method and system, its method is that collects the model, sends the collected wave-shape data to the numeral image processor by the sample value memory, the numeral image processor memories the collected wave data in three-dimensional data memory array processor, and marks in the according location of the three-dimensional data memory array processor, then the display control model sends the wave data to the back end in high speed, or displays it directly; this system uses the side-by-side system structure to accomplish the wave capture and display function, it breaks through the chock point in data process aspects. This invention improves the display update ability, reduces the data collection dead zone, all of the signal detail, disconnected affair and the dynamic character of signal can be collected.

DOUBLE-FIELD COUPLING DEHYDRATOR AND PARAMETER OPTIMIZATION THEREFOR

The invention discloses a double-field coupling dehydrator and an optimization method for parameters thereof. The optimization method includes: determining parameters to be optimized; carrying out simulations to the double-field coupling dehydrator according to the parameters to be optimized, separately; determining optimal ranges of the parameters to be optimized according to simulation results; determining optimized parameter combinations of the parameters to be optimized, separately; carrying out simulations to the double-field coupling dehydrator according to the optimized parameter combinations, separately; obtaining separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations; and determining an optimal parameter combination according to the separation efficiencies of the double-field coupling dehydrator. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency. Based on numerical simulation results of the double-field coupling dehydrator, these influences are analyzed by a software Design-Expert to obtain an optimal parameter combination.

Corestone manufacture method

The invention relates to a corestone manufacture method, which comprises the following steps: (1) mold manufacture; (2) material preparation; (3) sand mixing; (4) molding; (5) pressurization; (6) electrode wire and pressure measuring pipe pre-burying in the corestone; (7) heating; (8) electrode lengthening wire welding; and (9) sealing. Compared with a physical model used at present, the invention has the advantages that indoor oil displacement experiments can be carried out under the condition of high pressure, the in-site production conditions can be simulated more accurately, oil-water distribution charts inside the model can be drawn more accurately, the oil-containing saturation change inside the corestone can be tracked in time, and the invention provides the scientific basis for the establishment of the development scheme.

Relay protection optimal configuration method for double-circuit lines on same pole based on substation area information sharing

The invention discloses a relay protection optimal configuration method for double-circuit lines on the same pole based on substation area information sharing. In intelligent transformer substation double-circuit lines, one relay protection device is arranged in each of the double-circuit lines, and all the relay protection devices are only tripped or closed in corresponding lines; the relay protection device in each of double-circuit lines acquires the analog quantity information and the electric quantity information of the line in a networking mode, and the switch of the line is turned off or turned on through the networking mode, and at the same time, the analog quantity information and the electric quantity information of the adjacent line are acquired, and the action message is protected through instation GOOSE network sharing; the acquired data are sent to a protective CPU after being synced, and the protection algorithm is achieved by the protective CPU; the double-circuit lines ...

Chinese lycoris cultivation method under poplar and Chinese lycoris composite cultivation pattern

The invention discloses a Chinese lycoris cultivation method under a poplar and Chinese lycoris composite cultivation pattern. The Chinese lycoris cultivation method comprises the following steps: a timber-oriented poplar forest is selected, wherein the poplar forest has loose and fertile soil, the soil is approximately neutral, and the poplar forest is near a water source; soil preparation and bedding are conducted on poplar forest land; Chinese lycoris seedballs are prepared; planting furrows are formed in the poplar forest land which is subjected to soil preparation, wherein the Chinese lycoris seedballs are placed in the planting furrows according to row spacing, covered with soil, and finally watered for fixing roots; daily field management is conducted after the Chinese lycoris seedballs are planted, wherein the daily field management comprises timely grass gathering in spring and summer, timely fertilization and timely hydrops removal; the Chinese lycoris seedballs and fresh cut ...

Hardware firewall for realizing automatic upgrade and upgrading method thereof

The invention discloses a hardware firewall for realizing automatic upgrade, and an upgrading method thereof, mainly relating to the field of network safety. The hardware firewall for realizing automatic upgrade comprises an upgrading module and a storage module which are connected with each other by a bus, wherein the upgrading module is used for collecting and sending the information of current hardware and software to a server, sending an upgrading request to the server or receiving an upgrading notice and upgrading software, sending the received upgrading software to the storage module and completing the upgrade for the hardware firewall; and the storage module is used for receiving the upgrading software sent by the upgrading module and storing the upgrading software. By adopting the technical scheme, the invention provides the hardware firewall for realizing automatic upgrade and the upgrading method thereof, which are intelligent and lead technicists not to go to the site, so that ...

Method for stabilizing zero point of coriolis mass flowmeter based on auxiliary electromagnet

The invention discloses a method for stabilizing the zero point of a coriolis mass flowmeter based on an auxiliary electromagnet, which is jointly realized by a driving feedback ring, a left feedback ring and a right feedback ring, wherein the driving feedback ring eliminates zero point drift caused by common mode change of vibration damping at the left side and the right side of a vibration pipe, and the left feedback ring and the right feedback ring jointly eliminate zero point drift caused by differential mode change of vibration damping at the left side and the right side of the vibration pipe. According to the method, the damping of the vibration pipe is detected and adjusted in real time according to the vibration performance of the vibration pipe per se to ensure stable zero point of the coriolis mass flowmeter, thereby creating favorable conditions for application of the coriolis mass flowmeter in complicated industrial fields; the vibration pipe is made of a simple material and ...

Patching method and patching device in multi-core environment

A patching mechanism in a multi-core environment that includes sending an inter-core non-maskable interrupt to each target Virtual Central Processing Unit (CPU) (VCPU) in a target VCPU group, which share a code segment, so that said each target VCPU enters a patch synchronization state in response to the inter-core non-maskable interrupt. Thereafter, the patch synchronization state of said each target VCPU is monitored, and after all the target VCPUs have entered the patch synchronization state, embodiments modify a first instruction of an original function to be patched of said each target VCPU into an abnormal instruction, and outputting a patch synchronization state end notification to all the target VCPUs, so that the original function to be patched is enabled to jump to a new patch function in an exception handling process.

Method for quickly adjusting the waveform brightness of digital three-dimensional oscilloscope

The present invention provides a method for quickly adjusting the waveform brightness of digital three-dimensional (3D) oscilloscope, creates a ROM in FPGA and take it as a look-up table of screen display brightness value of LCD that is corresponding to the waveform occurrence N(T, A) at the current brightness gradation L, and divide the ROM into 2 a sub ROMs, each sub ROM has the capacity of 2 b ×d bits. Sub ROM corresponding to the current brightness gradation L is labeled as subROM L ; Increase the waveform occurrence N(T,A), assign the value of round(p L ·N(T,A) to waveform brightness value D(T,A) and store it correspondingly into the subROM L of 2 b ×d bits by ascending order of the b bits of binary data of waveform occurrence N(T,A). In this way, using the b bits of binary data of waveform occurrence N(T,A) as the binary address of the subROM L , corresponding waveform brightness value D(T,A) at the current brightness gradation L can be obtained through look-up table in the subROM L . Therefore, compared with complex computation of multiplication, adjusting waveform brightness is simpler and faster.

TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR BASED ON ANALOG CIRCUIT

Disclosed is a temperature-compensated crystal oscillator based on analog circuit; a closed-loop compensation architecture determines the temperature compensation of a crystal oscillator. The power splitter divides the VCXO's current output signal with frequency f=f+Δf into two signals, one signal to output of the TCXO and the other signal is sent to an analog frequency-voltage conversion circuit. According to the frequency of the VCXO's current output signal, the analog frequency-voltage conversion circuit produces a voltage signal V(T), which corresponds to current ambient temperature. The difference between V(T) and a reference voltage signal Vis produced and amplified to obtain a compensation voltage signal ΔV through a voltage matching circuit. ΔV is smoothed by a filter, then sent to the voltage control terminal of the VCXO to make the VCXO generate a stable signal with desired frequency f, to compensate the frequency of the VCXO's output signal when the ambient temperature is changed. 1. A temperature-compensated crystal oscillator based on analog circuit , comprising:{'sub': '0', 'a VCXO for generating a signal with desired frequency f;'}wherein further comprising:{'sub': '0', "a power splitter for dividing the VCXO's current output signal with frequency f=f+Δf into two signals, where one signal is used as the output of the TCXO, the other signal is taken as a frequency-voltage conversion signal;"}{'sub': '0', "an analog frequency-voltage conversion circuit for receiving the frequency-voltage conversion signal, and converting it, i.e. the VCXO's current output signal with frequency f=f+Δf into a voltage signal V(T), which is proportional to the frequency f;"}{'sub': ref', 'ref', 'ref', '0, 'a voltage matching circuit for receiving the voltage signal V(T), then producing the difference between the voltage signal V(T) and a reference voltage signal V, i.e. V−V(T), and amplifying the difference to obtain a compensation voltage signal ΔV; where the reference ...

Demand Prediction for Time-Expiring Inventory

This disclosure includes methods for predicting demand based on the price of a time-expiring inventory. An online system provides a connection between a manager of a time-expiring inventory and a plurality of clients. The online system provides a listing for the manager's time-expiring inventory to clients on the online system. The manager specifies the price of the time-expiring inventory in the listing and is presented with price tips generated by the online system. A demand function predicts the demand for the time-expiring inventory based on features of the listing and the time-expiring inventory. A manager option function predicts the likelihood of acceptance of a price tip by the manager. The online system uses the demand function and the manager option function to create a Monte Carlo pricing model to provide to the manager price tips for the listing. 1. A computer-executed method comprising:receiving, at an online computing system, a first feature vector and a second feature vector for a subject listing, the subject listing comprising a time-expiring inventory available to be booked by one of a plurality of clients of the online computing system and managed by a manager, the first feature vector and the second feature vector each comprising a plurality of features of the listing including a price feature indicating a current price of the time-expiring inventory;inputting the first feature vector into a demand function to generate a demand estimate that is a numerical representation of a likelihood that the time-expiring inventory will receive a transaction request from one of the clients before the time-expiring inventory expires;inputting the second feature vector into a manager option function to generate an acceptance estimate that is a numerical representation of a likelihood that the manager of the time-expiring inventory is willing to offer the time expiring inventory to clients at the current price; andstoring the demand estimate and the acceptance ...

BIOMAKERS USEFUL IN LIVER FIBROSIS DIAGNOSIS

Identification of urokinase-type plasminogen, matrix metalloproteinase 9, and β-2-microglobulin as novel biomarkers associated with liver fibrosis and uses thereof in diagnosing liver fibrosis. 1. A method of diagnosing liver fibrosis in a human subject , comprising:obtaining a blood sample from a human subject suspected of having liver fibrosis,detecting an expression level(s) of one or more of urokinase-type plasminogen activator (uPA), matrix metalloproteinase 9 (MMP9), and β-2-microglobulin (β-2MG) in the blood sample,calculating a disease score based on the expression levels; anddetermining whether the subject has fibrosis based on the disease score.2. The method of claim 1 , wherein the blood sample is a serum sample.3. The method of claim 1 , wherein the human subject is selected from the group consisting of a hepatitis C virus carrier claim 1 , a hepatitis B virus carrier claim 1 , a patient suffering from an alcohol-related liver disease claim 1 , and a patient suffering from a metabolic liver disease.4. The method of claim 1 , wherein the detecting step is performed by examining the expression levels of two of uPA claim 1 , MMP9 claim 1 , and β-2MG in the blood sample.5. The method of claim 1 , wherein the detecting step is performed by examining the expression levels of uPA claim 1 , MMP9 claim 1 , and β-2MG in the blood sample.6. The method of claim 5 , wherein the blood sample is a serum sample.7. The method of claim 5 , wherein the calculating step is performed by subjecting the expression levels of the uPA claim 5 , MMP9 claim 5 , and β-2MG to discriminant function analysis claim 5 , logistic regression analysis claim 5 , or ridge regression analysis.8. The method of claim 5 , further comprising claim 5 , after the subject being determined to have liver fibrosis claim 5 , assessing the subject's disease stage based on the disease score as compared to pre-determined cutoff values indicating different fibrosis stages.9. The method of claim 8 , wherein ...

WATERPROOF ELECTRICAL CONNECTOR

An electrical receptacle connector includes an insulative housing, a plurality of terminals retained in the housing, a metallic shell enclosing the housing and defining a mating cavity forwardly communicating with an exterior in a front-to-back direction, a compressible gasket surrounding a front edge region of the shell, and a metallic mounting bracket positioned upon the shell in the vertical direction perpendicular to the front-to-back direction wherein the mounting bracket includes a flange located at the front edge thereof and extending in a vertical direction perpendicular to the front-to-back direction to forwardly abut against the compressible gasket for preventing rearward movement of the compressible gasket. 1. An electrical connector comprising:an insulative housing;a plurality of terminals retained in the housing;a metallic shell enclosing the housing and defining a mating port forwardly communicating with an exterior in a front-to-back direction;a compressible waterproof gasket attached upon a front end region of the shell; anda metallic mounting bracket positioned upon an exterior surface of the shell;whereinthe mounting bracket forms flanges at a front edge thereof to efficiently abut forwardly against the waterproof gasket so as to prevent rearward movement of the waterproof gasket over the flange when said waterproof gasket is rearwardly pushed and compressed by a panel.2. The electrical connector as claimed in claim 1 , wherein the mounting bracket is unitarily formed with the shell.3. The electrical connector as claimed in claim 2 , wherein said mounting bracket unitarily extends from a rear edge of the shell via folded structures.4. The electrical connector as claimed in claim 3 , wherein the shell defines a capsular cross-section with a pair of long sides and a pair of short sides claim 3 , and the folded structures are formed on the long sides only.5. The electrical connector as claimed in claim 4 , wherein the mounting bracket includes a first ...

Method for Inducing Continuous Separation of Copper Ions from Copper Using UV-light Source

A method for inducing continuous separation of copper ions from copper using UV-light source, comprising the following steps: (1) cutting apiece of copper into wires or slices for immersing into a vessel containing water; switching on a stirrer for stirring the water continuously and keeping the copper being immersed in the water; (2) turning on the UV-light source for irradiating the copper and the water continuously; appearing a large amount of white precipitate in the water; (3) filtering the solution; detecting the filtered solution, a certain concentration copper ions in the filtered solution are found; adding hydrochloric acid by drops into the unfiltered original solution, the white precipitate is dissolved and copper ions are detected. The invention makes the copper separate out copper ions continuously and can be applied to copper ion disinfection for swimming-pool water, scenic water and cooling water, etc. 1. A method for inducing continuous separation of copper ions from copper using UV-light source , comprising the steps of:(1) cutting a copper into wires or slices for immersing into a vessel containing water, and switching on a stirrer for stirring the water continuously and keeping the copper being immersed in the water;(2) turning on the UV-light source for irradiating the copper and the water continuously until a large amount of white precipitate appears in the water; and(3) filtering the water solution; detecting the filtered solution, a certain concentration copper ions in the filtered solution are found; and adding hydrochloric acid by drops into unfiltered original solution, the white precipitate is dissolved and copper ions are detected.2. The method for inducing continuous separation of copper ions from copper using UV-light source according to claim 1 , wherein claim 1 , in the Step (1) claim 1 , the water has an electric conductivity of 100-500 μs/cm.3. The method for inducing continuous separation of copper ions from copper using UV-light ...

METHOD FOR MEASURING THE PROPERTIES OF LIQUID BASED ON A QUARTZ CRYSTAL MICROBALANCE SENSOR

The present invention provides a method for a method for measuring the properties of liquid based on a quartz crystal microbalance sensor, which employs two measurements to obtain two frequency shifts of the QCM sensor induced by two different volume of the sample liquid. The present invention creatively established the relationship between the density and viscosity of sample liquid and the frequency shifts of QCM sensor. With present invention, the density and viscosity of sample liquid can be obtained through two frequency shifts. Comparing to the conventional liquid property measurement. The measuring procedure of present invention are more simple, and the measuring results are more accurate. Moreover, the present invention consumes less volume of sample liquid, and has the features such as online, real time and quantitative. 1(1). connecting a QCM sensor to a driving circuit, where the driving circuit is connected to a DC power, and the output of the driving circuit is connected to a frequency counter;{'sub': '0', 'recording the counting value displayed on the frequency counter, after the DC power is powered on, and the QCM sensor begins to work, where the counting value is the reference resonant frequency fof the QCM sensor;'}{'sub': L1', '1', '1', '1', '0, "(2). loading a certain amount of sample liquid onto the QCM sensor's surface, where the volume of the sample liquid is V, and then, recording the counting value displayed on the frequency counter, where the counting value is the first resonant frequency fof the QCM sensor, and the first frequency shift is Δf=f−f;"}{'sub': L2', '2', '2', '2', '0, "(3). based on step (2), loading another certain amount of sample liquid onto the QCM sensor's surface, where the volume of the sample liquid is V, and then, recording the counting value displayed on the frequency counter, where the counting value is the second resonant frequency fof the QCM sensor, and the second frequency shift is Δf=f−f;"}{'sub': L1', 'L2', '2', ...

Regression-tree compressed feature vector machine for time-expiring inventory utilization prediction

This disclosure includes systems for regression-tree-modified feature vector machine learning models for utilization prediction in time-expiring inventory. An online computing system receives a feature vector for a listing and inputs the feature vector and modified feature vectors into a demand function to generate demand estimates. The system inputs the demand estimates into a likelihood model to generate a set of request likelihoods, each request likelihood representing a likelihood that the time-expiring inventory will receive a transaction request at each of a set of test price and test times to expiration. The system further trains a regression tree model based on a set of training data comprising each of the request likelihoods from the set and the test price and test time period to expiration used to generate the demand estimate that was used to generate the request likelihood.

Method for measuring the waveform capture rate of parallel digital storage oscilloscope

The present invention provides a method for measuring the waveform capture rate of parallel digital storage oscilloscope. On the basis of double pulse measurement, and in consideration of the asymmetry of acquisition and the refreshing time of parallel DSO, the present invention provides a step amplitude-frequency combined pulse measurement to measure the time for waveform acquisition and mapping T map , the number of captured waveforms before LCD refreshing W acq and the dead time caused by LCD refreshing T DDT , and then calculates the actual measured average WCR of parallel DSO, according to the measured data, so that the WCR of parallel can be measured.

Method for navigating an automated guided vehicle

A method for navigating an automated guided vehicle is provided. The method includes: generating an environment map for an automated guided vehicle and setting a target position, wherein the environment map at least includes an open region and a barrier region; generating a first navigation path on the environment map according to the target position; optimizing the first navigation path by using a dichotomy method to generate a second navigation path; orthogonalizing the second navigation path to generate a third navigation path, wherein every two adjacent line segments in the third navigation path are orthogonal to each other; and navigating the automated guided vehicle to the target position using the third navigation path. The method for navigating the automated guided vehicle according to the invention optimizes navigation paths.

Method for oscilloscope 3d mapping in scan mode

A method for oscilloscope 3D mapping in scan mode. The input signal is acquired using a real-time sampling rate which is D r times higher, thus more sampling points, i.e. D r acquired data can be obtained during the time interval between two consecutive horizontal pixels. The D r acquired data are mapped into a same column of the screen to implement fluorescent waveform display. In addition, to realize the scanning display, a flag X is introduced into the three-dimensional database, when the screen refresh signal arrives, the first D s acquired data are read out from the unread acquired data in FIFO memory. The three-dimensional database is updated from the flag X, which make the leftmost waveform always be the oldest waveform, the rightmost waveform always be the newest waveform. Thus the 3D mapping is realized in scan mode, letting the DSO have a fluorescent waveform display at slow time-base.

DEMULSIFICATION-DEHYDRATION METHOD BY USING CHAOTIC-FREQUENCY PULSE GROUP ELECTRIC FIELD

A demulsification-dehydration method by using a chaotic-frequency pulse group electric field, including: subjecting a waste oil emulsion to the chaotic-frequency pulse group electric field for demulsification and dehydration. The chaotic-frequency pulse group electric field includes a plurality of pulse electric field groups varying in pulse frequency. The pulse frequency of each pulse electric field group varies chaotically within a preset range. Each pulse electric field group includes a plurality of pulses of equal frequency, duty cycle and electric field intensity. 1. A demulsification-dehydration method by using a chaotic-frequency pulse group electric field , comprising:applying the chaotic-frequency pulse group electric field to a waste oil emulsion for demulsification and dehydration;wherein the chaotic-frequency pulse group electric field comprises a plurality of pulse electric field groups varying in pulse frequency; a pulse frequency of each of the plurality of pulse electric field groups experiences a chaotic change within a preset range; and each of the plurality of pulse electric field groups comprises a plurality of pulses of equal frequency, duty cycle and electric field intensity.5. The demulsification-dehydration method of claim 1 , wherein in each of the plurality of pulse electric field groups claim 1 , the plurality of pulses have a duty cycle of 0.5 and an electric field intensity of 100-500 kV/m.6. The demulsification-dehydration method of claim 1 , further comprising:before the chaotic-frequency pulse group electric field is applied to the waste oil emulsion, controlling the waste oil emulsion to 40-50° C.;{'sup': '2', 'wherein the waste oil emulsion comprises 10-30% by weight of water, and has a kinematic viscosity of less than 65 mm/s at 40° C.'} This application claims the benefit of priority from Chinese Patent Application No. 202110665685.1, filed on Jun. 16, 2021. The content of the aforementioned applications, including any intervening ...

METHOD FOR FULL-DIGITAL RANDOM SAMPLING

For the signal under acquisition which varies monotonically before and after the trigger time, a method for full-digital random sampling employs first sampled data before the trigger time and first sampled data after the trigger time to fit a curve, and obtains an intersection point of triggering level and the fitted curve, then, calculates the time interval between sampled data after the trigger time and the intersection point in the end, reconstructs the original signal, i.e. the signal under acquisition by a time interval of each acquisition. Thus, an analog trigger circuit and a time measurement circuit of conventional random sampling system can be eliminated, that simplifies the circuit design of data acquisition system and decreases its hardware complexity. Moreover, the higher sampling rate for the signal under acquisition is attained, and more waveform details are obtained. 1. A method a method for full-digital random sampling is provided , comprising the following steps:(1). random sampling and storingacquiring the sampled data of signal under acquisition by the ADC of random sampling system, wherein, the signal under acquisition varies monotonically before and after the trigger time, and in the monotonic section, a sampled data can be obtained before and after the trigger time respectively;sending the sampling command randomly by controller of data acquisition system to open the writing enable (wen) of the FIFO (First In First Out) for storing sampled data from the ADC;{'sub': p', 'p', 's', 'n−Lp+1', 'n+Ls−Lp', 'p', 's', 'n', 'n+1, 'when pre-triggering depth Lof the FIFO is attained, opening the reading enable (ren) of the FIFO to maintain the volume of sampled data with depth L; meanwhile, detecting whether the sampled data is satisfied with the triggering condition; once satisfied, closing the reading enable (ren) of the FIFO; and when the storage depth Lof an acquisition is attained, closing the writing enable (wen) of the FIFO; by this moment, the ...

HIERARCHICAL GENERATION OF BOOKING PROBABILITY

Systems and methods are provided for extracting a plurality of features for a listing from a datastore comprising a plurality of listings and a plurality of features for each of the plurality of listings, determining a cluster of similar listings to the listing and generating a set of cluster features for the cluster of similar listings, analyzing the set of cluster features for the cluster of similar listings based on a booking price, using a first trained machine learning model to determine a cluster-level probability of booking the listing on the given date, analyzing the plurality of features for the listing using the booking price, using a second trained machine learning model to determine a listing-level probability of booking the listing on the given date, and generating a final probability of booking by combining the cluster-level probability of booking and the listing-level probability of booking. 1. A method , comprising:receiving, by a computing system in an online marketplace, a request for a probability of booking a listing on a given date;extracting, by the computing system in the online marketplace, a plurality of features for the listing from a datastore comprising a plurality of listings and a plurality of features for each of the plurality of listings;determining, by the computing system in the online marketplace, a cluster of similar listings to the listing, based on at least one feature of the plurality of features of the listing;generating, by the computing system in the online marketplace, a set of cluster features for the cluster of similar listings;analyzing the set of cluster features for the cluster of similar listings based on a booking price, using a first trained machine learning model, to determine a cluster-level probability of booking the listing on the given date;analyzing the plurality of features for the listing using the booking price, using a second trained machine learning model, to determine a listing-level probability of ...

MAGNETIC CONNECTOR ASSEMBLY

An electrical connector includes an insulative seat, a plurality of terminals fixed to the insulative seat and at least one magnetic element retained in the insulative seat. The insulative seat defines a vertical first mating surface and a mating portion extending forwardly from the first mating surface, the mating portion defines an inclined second mating surface. Each terminal defines a contacting portion disposed in the mating portion and a soldering portion extending outside of the insulative seat. The mating portion defines a shallow recess recessed from the second mating surface, and the contacting portion defines a free end exposed on the shallow recess and locating behind the second mating surface. 1. An electrical connector , comprising:an insulative seat defining a vertical first mating surface and a mating portion extending forwardly from the first mating surface, the mating portion defining an inclined second mating surface;a plurality of terminals fixed to the insulative seat and each defining a contacting portion disposed in the mating portion and a soldering portion extending outside of the insulative seat; andat least one magnetic element retained in the insulative seat; whereinthe mating portion defines a shallow recess recessed backwardly from the second mating surface, and the contacting portion defines a free end exposed in the shallow recess and locating behind the second mating surface.2. The electrical connector as described in claim 1 , wherein the shallow recess of the mating portion defines a vertical third mating surface claim 1 , the insulative seat defines a plurality of the terminal slots running through the third mating surface for receiving the terminals claim 1 , the rear portion of each terminal slot is semicircular shape to form a semicircular terminal slot claim 1 , and the soldering portion of the terminal is slat shape to be received in the semicircular terminal slot.3. The electrical connector as described in claim 1 , wherein ...

PARAMETER OPTIMIZATION METHOD FOR DOUBLE-FIELD COUPLING DEHYDRATOR

A double-field coupling dehydrator and an optimization method for parameters. Parameters to be optimized is determined. Simulations to the double-field coupling dehydrator is carried out according to the parameters to be optimized, individually. Optimal ranges of the parameters to be optimized are determined according to simulation results. Optimized parameter combinations of the parameters to be optimized are determined separately. Separation efficiencies of the double-field coupling dehydrator under different optimized parameter combinations are obtained to determine an optimal parameter combination. The method considers both influences of single parameters and interactions between the parameters on the separation efficiency. Based on numerical simulation results of the double-field coupling dehydrator, these influences are analyzed by a software Design-Expert to obtain an optimal parameter combination. 1. A method of parameter optimization for a double-field coupling dehydrator , the double-field coupling dehydrator comprising an overflow pipe , a plurality of inlets , a straight pipe , a first truncated cone , a second truncated cone , and an underflow pipe; the overflow pipe and the plurality of inlets being provided on the straight pipe; the inlets being arranged on an outer wall of the straight pipe and are tangential to a wall of the straight pipe so as to allow a liquid to enter the straight pipe at a certain speed and rotate along an inner wall of the straight pipe; the overflow pipe being arranged along an axis of the straight pipe; a high-voltage electric field being arranged between an outer wall of the overflow pipe in the straight pipe and the inner wall of the straight pipe; and the straight pipe , the first truncated cone , the second truncated cone and the underflow pipe being connected sequentially;a joint between the first truncated cone and the second truncated cone having a nominal diameter D of 20-22 mm; the first truncated cone having a first ...

SYSTEM AND METHOD FOR VIDEO PROCESSING BASED ON QUANTIZATION PARAMETER

Various aspects of a system and method to process video based on quantization parameters are disclosed herein. In an embodiment, the method includes extraction of a plurality of features to capture texture information of an image block. A neural network regressor is trained to map the extracted plurality of features to determine an optimal quantization parameter. The image block is encoded by use of the determined optimal quantization parameter. 1. A system for video processing , said system comprising: extract a plurality of features to capture texture information of an image block:', 'train a neural network regressor to map said extracted plurality of features to determine an optimal quantization parameter; and', 'encode said image block by use of said determined optimal quantization parameter., 'one or more circuits in a video processor, said one or more circuits being configured to2. The system according to claim 1 , wherein said one or more circuits are configured to encode said image block of a first image frame with a plurality of quantization parameters to generate a plurality of reconstructed image blocks for said image block of said first image frame.3. The system according to claim 2 , wherein said one or more circuits are configured to utilize an image quality measure for each of said plurality of reconstructed image blocks for said determination of said optimal quantization parameter for said image block.4. The system according to claim 3 , wherein said image quality measure is a full-reference image quality measure based on convolution neural network.5. The system according to claim 3 , wherein said one or more circuits are configured to generate a score for each of said plurality of reconstructed image blocks by use of said image quality measure claim 3 , wherein said score indicates a measure of visual quality of each of said plurality of reconstructed image blocks.6. The system according to claim 5 , wherein a value of said determined optimal ...

STIMULATING DEVICE FOR ENHANCING RELEASE OF NEGATIVE AIR IONS BY A PLANT, AND PLANT-BASED NEGATIVE AIR ION PRODUCING DEVICE

A stimulating device for enhancing release of negative air ions by a plant includes a plant pot to receive a culture medium for cultivating the plant, and a negative voltage pulse module that outputs a negative voltage pulse to stimulate the plant via a pair of first and second conductive terminals. The first conductive terminal contacts the culture medium. The second conductive terminal is non-contact with the culture medium when the culture medium is placed in the plant pot. 1. A stimulating device for enhancing release of negative air ions by a plant , said stimulating device comprising:a housing including a first surrounding wall that defines an inner chamber;a plant pot disposed in said inner chamber, and configured to receive a culture medium for cultivating the plant;a first conductive terminal passing through said plant pot for contact with the culture medium;a second conductive terminal spaced apart from said first conductive terminal, disposed on one of said housing and said plant pot, and to be non-contact with the culture medium when the culture medium is placed in said plant pot; anda negative voltage pulse module disposed on said housing, including a first electrode electrically coupled to said first conductive terminal, and a second electrode electrically coupled to said second conductive terminal, and configured to output a negative voltage pulse at said first electrode so as to stimulating the plant via the culture medium for enhancing release of the negative air ions thereby.2. The stimulating device according to claim 1 , wherein:said housing further includes a second surrounding wall surrounding said first surrounding wall, and an interconnecting wall interconnecting bottom parts of said first and second surrounding walls;said second conductive terminal is disposed on said interconnecting wall of said housing, and is to be exposed in air when the culture medium is placed in said plant pot; andsaid first conductive terminal passes through a bottom ...

METHOD FOR INTERACTION AND, SERVER AND NETWORK PLATFORM THEREFOR

Disclosed are a method for interaction, and a server and a network platform therefor. The method includes: acquiring a task link that is clicked by a user on a first network platform from the first network platform; and redirecting, according to the task link, to a webpage where the preset task on the second network platform is located, such that the user performs the preset task on the second network platform on the webpage. The server includes a first acquiring module and a redirecting module. The server redirects, according to a task link clicked by a user on a first platform, to a webpage where a preset task on a second network platform is located, which implements interaction between the user and multiple network platforms, and thereby provides more ways in which the user interacts with the network platforms. 1. A method for interaction , comprising:acquiring a task link that is clicked by a user on a first network platform, wherein the task link corresponds to a preset task on a second network platform;redirecting, according to the task link, to a webpage wherein the preset task on the second network platform is located; andimplementing the preset task on the webpage.2. The method according to claim 1 , wherein before the redirecting claim 1 , according to the task link claim 1 , to a webpage where the preset task on the second network platform is located claim 1 , the method further comprises:authenticating whether the user is qualified to perform the preset task on the second network platform; and if the user is qualified, performing the step of redirecting, according to the task link, to the webpage where the preset task on the second network platform is located.3. The method according to claim 1 , wherein after the redirecting claim 1 , according to the task link claim 1 , to a webpage where the preset task on the second network platform is located claim 1 , the method further comprises:charging a first fee corresponding to the preset task on the second ...

METHOD AND APPARATUS FOR SENDING DELIVERY NOTIFICATION OF NETWORK APPLICATION-RELATED PRODUCT

A method and apparatus for sending a delivery notification of a network application-related product are provided. The method includes: selecting a delivery executing server in advance from multiple delivery servers of an application; acquiring quality of service information of the delivery executing server of the application; judging, according to a predefined judging rule, whether the quality of service information meets a requirement; and if the requirement is met, retaining the delivery executing server unchanged; otherwise, setting another delivery server of the application as a delivery executing server; and sending a delivery notification to a current delivery executing server of the application upon detecting the delivery notification of the application to be sent. 1. A method for sending a delivery notification of a network application-related product , wherein a delivery executing server is selected in advance from multiple delivery servers of an application , and the method comprises:acquiring quality of service information of the delivery executing server of the application;judging, according to a predefined judging rule, whether the quality of service information meets a requirement; and if the requirement is met, retaining the delivery executing server unchanged; otherwise, setting another delivery server of the application as a delivery executing server; andsending a delivery notification to a current delivery executing server of the application upon detecting the delivery notification of the application to be sent.2. The method according to claim 1 , wherein the acquiring quality of service information of the delivery executing server of the application comprises:acquiring the quality of service information of the delivery executing server of the application according to a predefined first detection period.3. The method according to claim 1 , wherein the quality of service information comprises at least one of a delivery failure rate claim 1 , a ...

REGRESSION-TREE COMPRESSED FEATURE VECTOR MACHINE FOR TIME-EXPIRING INVENTORY UTILIZATION PREDICTION

This disclosure includes systems for regression-tree-modified feature vector machine learning models for utilization prediction in time-expiring inventory. An online computing system receives a feature vector for a listing and inputs the feature vector and modified feature vectors into a demand function to generate demand estimates. The system inputs the demand estimates into a likelihood model to generate a set of request likelihoods, each request likelihood representing a likelihood that the time-expiring inventory will receive a transaction request at each of a set of test price and test times to expiration. The system further trains a regression tree model based on a set of training data comprising each of the request likelihoods from the set and the test price and test time period to expiration used to generate the demand estimate that was used to generate the request likelihood. 1. A computer-executed method comprising:receiving, at an online computing system, a feature vector for a subject listing, the subject listing comprising a time-expiring inventory available to be booked by one of a plurality of clients of the online computing system, the feature vector comprising a plurality of features of the listing including a price feature indicating a current price of the time-expiring inventory and a current time period until expiration feature indicating a duration until the time-expiring inventory expires;inputting the feature vector into a demand function to generate a demand estimate that is a representation of a likelihood that the time-expiring inventory will receive a transaction request from one of the clients before the time-expiring inventory expires;generating a set of test prices that are greater or less than the current price of the time-expiring inventory at each of a set of test times to expiration;inputting into the demand function, for each combination of the test prices and test times to expiration, a modified version of the feature vector that ...

LIQUID-LIQUID-SOLID THREE-PHASE SEPARATOR FOR WASTE OIL

Disclosed is a liquid-liquid-solid three-phase separator for waste oil, including an oil-bath heating tank, a plurality of cyclone units and solid removal units. The cyclone units are provided and fixed in the oil-bath heating tank. Each of the solid removal units is connected to an underflow pipe of each of the cyclone units and is configured to separate solid particles. A solid removal outer pipe is arranged at a tail end of the underflow pipe via the first connector; the second connector is arranged at a tail end of the solid removal outer pipe; the solid removal inner pipe is arranged at an underflow outlet of the underflow pipe via the second connector to form a solid removal gap. The invention provides the demulsification and dehydration treatment of waste oil emulsion and the separation of solid particles. 1. A liquid-liquid-solid three-phase separator for industrial waste oil , comprising:an oil-bath heating tank,a plurality of cyclone units, anda plurality of solid removal units;wherein the cyclone units are provided in the oil-bath heating tank, a plurality of support steel plates is provided on a tank body of the oil-bath heating tank; the cyclone units are fixed in the oil-bath heating tank via the support steel plates; and each of the solid removal units is connected to an underflow pipe of the cyclone units and is configured to separate solid particles in a fluid from the underflow pipe.2. The separator of claim 1 , wherein each of the solid removal units comprises a first connector claim 1 , a solid removal inner pipe claim 1 , a solid removal outer pipe and a second connector; the solid removal outer pipe is arranged at a tail end of the underflow pipe of each of the cyclone units via the first connector; the second connector is arranged at a tail end of the solid removal outer pipe claim 1 , the solid removal inner pipe is arranged at an underflow outlet of the underflow pipe via the second connector to form a solid removal gap between the solid ...

FULL REFERENCE IMAGE QUALITY ASSESSMENT BASED ON CONVOLUTIONAL NEURAL NETWORK

Embodiments generally relate to providing systems and methods for assessing image quality of a distorted image relative to a reference image. In one embodiment, the system comprises a convolutional neural network that accepts as an input the distorted image and the reference image, and provides as an output a metric of image quality. In another embodiment, the method comprises inputting the distorted image and the reference image to a convolutional neural network configured to process the distorted image and the reference image and provide as an output a metric of image quality. 1. A system for assessing image quality of a distorted image relative to a reference image , the system comprising:a convolutional neural network that accepts as an input the distorted image and the reference image, and provides as an output a metric of image quality.2. The system of wherein the convolutional neural network comprises a plurality of layers.3. The system of wherein the plurality of layers comprises:an input layer configured to apply a normalizing function to image patches making up each of the distorted image and the reference image to provide a normalized distorted image and a normalized reference image; anda convolution layer configured to convolve each of the normalized distorted image and the normalized reference image with N1 filters to provide N1 pairs of feature maps, each pair containing one filtered normalized distorted image and one correspondingly filtered and normalized reference image, where N1 is an integer greater than unity.4. The system of wherein the plurality of layers further comprises:a linear combination layer configured to compute N2 linear combinations of the N1 feature maps provided from each of the normalized distorted image and the normalized reference image, providing N2 pairs of combined feature maps, each pair containing one combination of filtered normalized distorted images and one corresponding combination of filtered and normalized reference ...

BANDING PREDICTION FOR VIDEO ENCODING

A system and method for facilitating inhibiting banding in video data, in part by anticipating when banding may occur given certain encoder parameters. An example method includes receiving an input stream of video data; extracting feature information characterizing the stream of video data; using a feed-forward neural network to process the feature information to estimate when a particular block of the stream of video data will exhibit an artifact when encoded using certain Quantization Parameters (QPs); incorporating the indication into metadata associated with the stream of video data; and transferring the stream of video data and metadata to a video encoder. In a more specific embodiment, the feature information includes color information and texture information, and the neural network includes a feed-forward neural network that includes a classifier with a sigmoid activation function, and which has been trained using a cross-entropy cost function. 1. A method for facilitating inhibiting banding in video data , the method comprising:receiving an input stream of video data;extracting feature information from the stream of video data, wherein the feature information characterizes one or more features of the video data;using a neural network to process the feature information to provide an indication of whether a particular block of the stream of video data will exhibit an artifact when encoded with an encoder;incorporating the indication into metadata associated with the stream of video data; andtransferring the stream of video data and metadata to a video encoder.2. The method of claim 1 , wherein the feature information includes color information and texture information.3. The method of claim 2 , wherein the artifact includes a banding artifact.4. The method of claim 3 , wherein extracting includes using a feature extractor module to capture the color and texture information of a block of the video data.5. The method of claim 4 , wherein a banding artifact ...

TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR BASED ON DIGITAL CIRCUIT

The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage V(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature senor and the real temperature of the resonant wafer in the prior art. 1. a temperature-compensated crystal oscillator based on digital circuit , comprising:a VCXO for generating a signal with desired frequency;a compensation network for generating a desired compensation voltage based on a compensation voltage value and sending the desired compensation voltage to the voltage control terminal of the VCXO to make the VCXO generate a stable signal with desired frequency;wherein further comprising a power divider, an analog-to-digital converter and a microprocessor;where the power divider divides the signal with desired frequency signal into two signals: one is used as the output of the TCXO and the other is sent to the analog-to-digital converter;the analog-to-digital converter converts the signal with desired frequency into a corresponding frequency value with binary form, and sends the corresponding frequency value to the microprocessor;a binary coding table, in which a plurality of frequency values and their respective corresponding compensation voltage values are filled is stored in the microprocessor, the microprocessor finds a compensation voltage value in the binary coding table according to the frequency value sent by the analog-to-digital converter, and sends ...

METHOD FOR 3D WAVEFORM MAPPING OF FULL-PARALLEL STRUCTURE

The present invention provides a method for 3D waveform mapping of full-parallel structure, first, a 3D waveform mapping database is created according to the size of a 3D waveform image, the number of bits of probability value and the ADC's resolution of data acquisition module, then the 3D waveform mapping database is divided into M×Mindependent mapping storage areas along the time axis and the amplitude axis, and each independent mapping storage area is assigned a RAM, then RAMs are selected and addresses are calculated based on the sampling values and the structure of created 3D waveform mapping database, finally, parallel mappings are performed simultaneously on the time axis and the amplitude axis according to the selected RAMs and calculated addresses. Thus, the mapping time are shorten, especially in vector mapping mode, several RAMs are used for mapping, so the WCR of DSO is improved. This application claims priority under the Paris Convention to Chinese Patent Application No. 201810643986.2, filed on Jun. 21, 2018, the entirety of which is hereby incorporated by reference for all purposes as if fully set forth herein.The present invention relates to the field of waveform display, more particularly to a method for 3D waveform mapping of full-parallel structure.Three-dimensional (3D) waveform display is one of the main functions of 3D digital storage oscilloscope (DSO). 3D waveform image displayed on screen can provide not only the time information and the amplitude information of a waveform, but also the occurrences (probability) information of the waveform, which is indicated by different levels of luminance. Usually, 3D waveform display is realized through 3D waveform mapping, which improves the waveform capture rate (WCR) of DSO. WRC is one of the key performance specifications of DSO. The higher the WRC is, the higher the probability that the complex signals such as burst signal and burr signal are captured will be.As shown in , the overall process of 3D ...

Waterproof electrical connector

An electrical receptacle connector includes an insulative housing, a plurality of terminals retained in the housing, a metallic shell enclosing the housing and defining a mating cavity forwardly communicating with an exterior in a front-to-back direction, a compressible gasket surrounding a front edge region of the shell, and a metallic mounting bracket positioned upon the shell in the vertical direction perpendicular to the front-to-back direction wherein the mounting bracket includes a flange located at the front edge thereof and extending in a vertical direction perpendicular to the front-to-back direction to forwardly abut against the compressible gasket for preventing rearward movement of the compressible gasket.

Banding prediction for video encoding

A system and method for facilitating inhibiting banding in video data, in part by anticipating when banding may occur given certain encoder parameters. An example method includes receiving an input stream of video data; extracting feature information characterizing the stream of video data; using a feed-forward neural network to process the feature information to estimate when a particular block of the stream of video data will exhibit an artifact when encoded using certain Quantization Parameters (QPs); incorporating the indication into metadata associated with the stream of video data; and transferring the stream of video data and metadata to a video encoder. In a more specific embodiment, the feature information includes color information and texture information, and the neural network includes a feed-forward neural network that includes a classifier with a sigmoid activation function, and which has been trained using a cross-entropy cost function.

Methods and apparatus for managing computing deployment in presence of variable workload

Magnetic connector assembly

An electrical connector includes an insulative seat, a plurality of terminals fixed to the insulative seat and at least one magnetic element retained in the insulative seat. The insulative seat defines a vertical first mating surface and a mating portion extending forwardly from the first mating surface, the mating portion defines an inclined second mating surface. Each terminal defines a contacting portion disposed in the mating portion and a soldering portion extending outside of the insulative seat. The mating portion defines a shallow recess recessed from the second mating surface, and the contacting portion defines a free end exposed on the shallow recess and locating behind the second mating surface.

Steel case roof beam hoist and mount location bearing structure

本实用新型公开了一种钢箱梁吊装定位支撑结构，包括位于墩柱上端的支座，所述支座支撑钢箱梁，其特征在于：所述墩柱横向两侧固定设有临时支柱，所述临时支柱上端支撑钢箱梁，所述钢箱梁下端分别设有横向挡块和纵向挡块，所述横向挡块和所述纵向挡块分别与所述临时支柱横向端面和纵向端面限位配合。将临时支柱设置在墩柱的横向两侧，并通过设置横向挡块与纵向挡块对钢箱梁进行初步定位，这样支座的施工空间大，减小了支座精确定位阶段的难度；临时支柱分为上层支柱和下层支柱，上层支柱主要承受钢箱梁的压应力，下层支柱因为设置了牛腿可有效抵抗剪切力，提高了整个临时支柱的支撑强度。

System and method for video processing based on quantization parameter

Various aspects of a system and method to process video based on quantization parameters are disclosed herein. In an embodiment, the method includes extraction of a plurality of features to capture texture information of an image block. A neural network regressor is trained to map the extracted plurality of features to determine an optimal quantization parameter. The image block is encoded by use of the determined optimal quantization parameter.

Ingot furnace of movable heater

本实用新型公开了一种移动式加热器的铸锭炉，包括炉体、设于所述炉体内、用以加热融化所述炉体内的硅料的侧部加热器，所述侧部加热器用以当硅料长晶时跟随硅料的固液界面的移动沿所述炉体的高度方向移动。该移动式加热器的铸锭炉能够改善硅棒成晶质量、减小硅棒各段的差异性、提高晶体转换效率。

Openable/closable mold and base mold linkage device of bottle-blowing machine

Method for interaction and, server and network platform therefor

Disclosed are a method for interaction, and a server and a network platform therefor. The method includes: acquiring a task link that is clicked by a user on a first network platform from the first network platform; and redirecting, according to the task link, to a webpage where the preset task on the second network platform is located, such that the user performs the preset task on the second network platform on the webpage. The server includes a first acquiring module and a redirecting module. The server redirects, according to a task link clicked by a user on a first platform, to a webpage where a preset task on a second network platform is located, which implements interaction between the user and multiple network platforms, and thereby provides more ways in which the user interacts with the network platforms.

Spatial series-parallel pelvic fracture reduction robot

A spatial series-parallel pelvic fracture reduction robot includes a base support, a mobile platform module, an arc-shaped guide rail platform module, a robot module, and a pelvic external fixator which are connected in sequence. The mobile platform module is fixedly connected on an upper part of the base support and is used for driving the arc-shaped guide rail platform module to linearly translate up and down and left and right; a connecting sliding block of the arc-shaped guide rail platform module is connected to the robot module and used for enabling the robot module to move along an arc-shaped guide rail; the robot module includes a robot and a clamping mechanism, the robot is used for adjusting a spatial pose of the clamping mechanism, and the clamping mechanism is used for fixing bone needles; the pelvic external fixator is used for firmly fixing the pelvis.

將極群組合於外殼的製程

一種將極群組合於外殼的製程，包括：(a)將一具有極耳的極板置於一治具中進行整理形成極群；(b)將整理完成後的所述極群一部分壓入一外殼，另一部分則露出該外殼；(c)對置入該外殼的極群之極耳進行加工，並在該極耳沾附助焊劑並予乾燥；(d)將所述已置入外殼之極群的極耳插入已注入金屬熔液的鑄型模具之模穴中，並使外殼與鑄型模具嵌合；(e)等待該金屬熔液冷卻而焊接於該極耳形成電橋後，將該電橋從鑄型模具脫離；(f)將露出該外殼的極群完全壓入該外殼內。

Snp markers of drug reduced susceptibility related evolutionary branches of clostridium difficile, method for identifying strain category, and use thereof

Provided are SNP markers of drug reduced susceptibility related evolutionary branches of Clostridium difficile, a method for identifying the category of a Clostridium difficile strain, and use thereof. The SNP markers are specific markers of three categories of the Clostridium difficile clade2 (mainly hypervirulent ribotype 027), allowing for rapid and accurate identification of the evolutionary branches of Clostridium difficile strains that are resistant to a variety of therapeutic drugs and related drugs. Accurate categorization of the drug reduced susceptibility related evolutionary branches not only provides evidence for the evolutionary traceability of drug-resistant pathogens, but also offers effective and actionable guidance on clinical drug usage.

Grasping instrument, tracking and navigation system, method and display apparatus, and storage medium

Provided are a grasping instrument, tracking and navigation system, method and display apparatus for bone structure reduction, and a storage medium. The grasping instrument includes a straight strip-shaped support rod, and a grasping end and a signal end that are arranged at two ends of the support rod; a plurality of grating sensors extending in an axial direction are arranged on the support rod; the signal end is provided with an instrument pose feedback sensor for feeding back pose information of the grasping instrument; and the plurality of grating sensors are configured to detect deformation data of the support rod under an action of resistance at the grasping end. The tracking and navigation system includes an electromagnetic signal transceiving apparatus, the grasping instrument, an ultrasonic detection apparatus, and a navigation display apparatus.

室內植物源負離子激增裝置

一種室內植物源負離子激增裝置，該裝置以龍舌蘭科植作為植物源負離子的直接來源，以土壤或培養液作為耦合介質，對植物施以特定參數的負高壓脈衝信號，形成植物電信號與外加電信號耦合共振，脅迫植物釋放大量植物源負離子。同時，以離子空間均化裝置來實現植物源負離子在室內空間的遠距離輸送、長時間存留、均勻分佈，通過防觸電安全保護裝置消耗植物葉尖上的殘留電荷，保護人畜接觸植物時免受靜電電擊傷害，實現與現有室內負離子發生器所不同的安全、環保、生態的室內負離子生成新裝置。

Patching method and patching device under multi-core environment

Patching method and patching device under multi-core environment

A patching method and a patching device in a multi-core environment are provided. The patching method includes: sending an inter-core non-maskable interrupt to each target Virtual Central Processing Unit (CPU) (VCPU) in a target VCPU group which share a code segment, so that said each target VCPU enters a patch synchronization state, in response to the inter-core non-maskable interrupt; and monitoring the patch synchronization state of said each target VCPU, and after all the target VCPUs have entered the patch synchronization state, modifying a first instruction of an original function to be patched of said each target VCPU into an abnormal instruction, and outputting a patch synchronization state end notification to all the target VCPUs, so that the original function to be patched is enabled to jump to a new patch function in an exception handling process, which is triggered when the original function to be patched is executed to the abnormal instruction. The method and the device adopt the mode of synchronization of inter-core non-maskable interrupts to realize synchronous activation of patches of the target VCPUs which share the code segment, and realize the complete effectiveness of the patches in the exception handling process.

Method for oscilloscope 3D mapping in scan mode

A method for oscilloscope 3D mapping in scan mode. The input signal is acquired using a real-time sampling rate which is Dr times higher, thus more sampling points, i.e. Dr acquired data can be obtained during the time interval between two consecutive horizontal pixels. The Dr acquired data are mapped into a same column of the screen to implement fluorescent waveform display. In addition, to realize the scanning display, a flag X is introduced into the three-dimensional database, when the screen refresh signal arrives, the first Ds acquired data are read out from the unread acquired data in FIFO memory. The three-dimensional database is updated from the flag X, which make the leftmost waveform always be the oldest waveform, the rightmost waveform always be the newest waveform. Thus the 3D mapping is realized in scan mode, letting the DSO have a fluorescent waveform display at slow time-base.

A convenient book placement platform

Cross-listed property matching using image descriptor features

Two sets of data, each containing property listings, are obtained from two discrete merchant platforms. Each property listing in a set of data of a first merchant is sequentially paired with each of the property listings in a set of data of a second merchant. For each pair, each image of the property listing of the first merchant is compared to each image of the property listing of the second merchant, and images of statistically sufficient similarity are identified. The similarity of images, and in particular, of similar images likely to be rooms of the property, are considered in a determination of whether the product listings of the first and second merchant are for the same cross-listed product.

將極群裝載於容器中的轉盤裝置

一種極群裝載於容器中的轉盤裝置包括：一機台。所述機台包括一空殼區、一置入區、一整理區以及一裝載區，且所述機台進一步包括：一第一固定平台、一第二固定平台、一轉盤、複數個載具、一整理器、一推壓裝置以及一升降裝置。所述複數個載具設置於該轉盤之上，且每一個該等載具具有複數個容置空間，其中，該等容置空間中的每一者可容納一極群，其中，每一個該極群是由複數個極板所形成，且每一個該極板具有一極耳。所述整理器設置於該整理區上方及該第一固定平台下方。所述推壓裝置包括複數個推柱。所述該升降裝置包括一升降台，其中，該升降台係乘載一容器。

Hierarchical generation of booking probability

Systems and methods are provided for extracting a plurality of features for a listing from a datastore comprising a plurality of listings and a plurality of features for each of the plurality of listings, determining a cluster of similar listings to the listing and generating a set of cluster features for the cluster of similar listings, analyzing the set of cluster features for the cluster of similar listings based on a booking price, using a first trained machine learning model to determine a cluster-level probability of booking the listing on the given date, analyzing the plurality of features for the listing using the booking price, using a second trained machine learning model to determine a listing-level probability of booking the listing on the given date, and generating a final probability of booking by combining the cluster-level probability of booking and the listing-level probability of booking.

Broadband rotary joint for millimeter wave transmission

A rotary joint includes a shaft having a first end, a second end, and a cavity. The rotary joint includes a first waveguide section having a first proximal end and a first distal end. The first proximal end of the first waveguide section is positioned within the cavity and secured to the inner surface of the shaft. The rotary joint includes a second waveguide section that includes a second proximal end and a second distal end. The second proximal end of the second waveguide section is positioned within the cavity of the shaft and unsecured to the inner surface of the shaft to form a radial gap between an outer surface of the second proximal end and a laterally adjacent portion of the inner surface of the shaft. The shaft and the first waveguide section are configured to rotate about the rotational axis and relative to the second waveguide section.

Cross-listed property matching using image descriptor features

Two sets of data, each containing property listings, are obtained from two discrete merchant platforms. Each property listing in a set of data of a first merchant is sequentially paired with each of the property listings in a set of data of a second merchant. For each pair, each image of the property listing of the first merchant is compared to each image of the property listing of the second merchant, and images of statistically sufficient similarity are identified. The similarity of images, and in particular, of similar images likely to be rooms of the property, are considered in a determination of whether the product listings of the first and second merchant are for the same cross-listed product.

Demand prediction for time-expiring inventory

This disclosure includes methods for predicting demand based on the price of a time-expiring inventory. An online system provides a connection between a manager of a time-expiring inventory and a plurality of clients. The online system provides a listing for the manager's time-expiring inventory to clients on the online system. The manager specifies the price of the time-expiring inventory in the listing and is presented with price tips generated by the online system. A demand function predicts the demand for the time-expiring inventory based on features of the listing and the time-expiring inventory. A manager option function predicts the likelihood of acceptance of a price tip by the manager. The online system uses the demand function and the manager option function to create a Monte Carlo pricing model to provide to the manager price tips for the listing.

極耳固定切削裝置

上盖组件、电池模组及电池包

本实用新型涉及动力电池包技术领域，提供一种上盖组件、电池模组及电池包。本实用新型所述的上盖组件包括汇流排支架和设置在所述汇流排支架上方的模组上盖，所述模组上盖的一侧与所述汇流排支架之间形成转动连接，以使所述模组上盖能够绕平行于所述汇流排支架的轴线枢转地开合，所述模组上盖的另一侧能够支撑在所述汇流排支架的上方。本实用新型的上盖组件中，将模组上盖一侧与汇流排支架转动连接，而另一侧则支撑于汇流排支架上方，从而利用转动连接的方式替代传统的连接方式，解决了模组上盖拆卸困难的问题，同时还能够有效地对汇流排支架起到保护作用。

Swirl-type demulsification and dehydration device for oil-water emulsion

A swirl-type demulsification and dehydration device for oil-water emulsions, including a swirler. An open end of a swirl chamber of the swirler faces towards an underflow pipe and communicates with the underflow pipe through a composite curved pipe section coaxial with the swirl chamber. A large-diameter end of a concave arc transition section is connected to the open end of the swirl chamber, is the same with the swirl chamber in inner diameter. A large-diameter end of a straight cone transition section is tangent to a small-diameter end of the concave arc transition section. A small-diameter end of the straight cone transition section is tangent to a large-diameter end of a convex elliptical arc transition section. A small-diameter end of the convex elliptical arc transition section is connected to the underflow pipe.

Method and apparatus for assembling battery group into battery case

In-vivo micro-robot for nerve stretching

Disclosed is an in-vivo micro-robot for nerve stretching, comprising a channel, and a movable part and a fixed part located at the channel. The movable part is disposed to be movable along the channel, the movable part sleeves the fixed part and is used for driving the fixed part to move along the channel, and the fixed part is connected to a nerve to be stretched. The in-vivo micro-robot is embedded into a patient's body through surgery, so that the extension of the nerve is accelerated and is regular and quantitative, thereby effectively solving the problems of small probability of nerve self-repair and long recovery period in traditional nerve bridging surgery.

Demand prediction for time-expiring inventory

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :::` , 111111 IOU 0 Hi 010 NIB 110 1 0 1011111 010 11111 001 0111 0011110 1111 OEN Organization International Bureau (10) International Publication Number 03 (43) International Publication Date .....•\"\"- WO 2018/017323 Al 25 January 2018 (25.01.2018) WIP0 I PCT (51) International Patent Classification: Li; c/o Airbnb, Inc., 888 Brannan Street, San Francisco, CA G06Q 10/02 (2012.01) G06Q 50/14 (2012.01) 94103 (US). PELLICANO, Carla; c/o Airbnb, Inc., 888 G06Q 30/02 (2012.01) Brannan Street, San Francisco, CA 94103 (US). YE, Peng; (21) International Application Number: c/o Airbnb, Inc., 888 Brannan Street, San Francisco, CA PCT/U52017/040705 94103 (US). (22) International Filing Date: (74) Agent: WHITEHEAD, Andrew, P. et al.; Fenwick & 05 July 2017 (05.07.2017) West LLP, 801 California Street, Mountain View, CA 94041 (US). (25) Filing Language: English (81) Designated States (unless otherwise indicated, for every (26) Publication Language: English kind of national protection available): AE, AG, AL, AM, (30) Priority Data: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 15/213,062 18 July 2016 (18.07.2016) US CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (71) Applicant: AIRBNB, INC. [US/US]; 888 Brannan Street, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, San Francisco, CA 94103 (US). KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (72) Inventors: YEE, Yangli, Hector; c/o Airbnb, Inc., 888 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, Brannan Street, San Francisco, CA 94103 (US). ZHANG, (54) Title: DEMAND PREDICTION FOR TIME-EXPIRING INVENTORY = = Monte Carlo Pricing Model 327 Demand Model 320 Manager Option Model 325 = = = = Likelihood of Transaction 1 930 Likelihood of Acceptance 1 990 = = Price 0.- 0 Price ...

Graph-based anomaly detection for cybersecurity

Anomalous activities on a computer network are detected from audit or sign-in activity information of a target entity as recorded in an audit or sign-in log. A baseline graph of the target entity is generated using information on activities of the target entity during a collection period. A predict graph of the target entity is generated with information on activities of the target entity during another collection period, which follows and is shorter than the earlier collection period. A residual graph that indicates nodes or edges that are in the predict graph but not in the baseline graph is generated. The residual graph is scored and the score is compared to a threshold to determine whether the target entity has performed an anomalous activity.

Maquina de vector de caracteristicas de arbol de regresion comprimido para prediccion de utilizacion de inventario que expira.

Esta divulgación incluye sistemas para modelos de aprendizaje de máquina de vector de características de árbol de regresión modificado para predicción de utilización en inventario que expira. Un sistema de computación en línea recibe un vector de características para un listado e introduce el vector de características y vectores de características modificados en una función de demanda para generar estimados de demanda. El sistema introduce los estimados de demanda en un modelo de probabilidad para generar un conjunto de probabilidades de solicitud, cada probabilidad de solicitud representando una probabilidad de que el inventario que expira reciba una solicitud de transacción en cada uno de un conjunto del precio de prueba y los tiempos de prueba a la expiración. El sistema además entrena un modelo de árbol de regresión con base en un conjunto de datos de entrenamiento que comprende cada una de las probabilidades de solicitud del conjunto y el precio de prueba y periodo de tiempo de prueba a la expiración utilizados para generar el estimado de demanda que se utilizó para generar la probabilidad de solicitud.

Regression-tree compressed feature vector machine for tim-expiring inventory utilization prediction

This disclosure includes systems for regression-tree-modified feature vector machine learning models for utilization prediction in time-expiring inventory. An online computing system receives a feature vector for a listing and inputs the feature vector and modified feature vectors into a demand function to generate demand estimates. The system inputs the demand estimates into a likelihood model to generate a set of request likelihoods, each request likelihood representing a likelihood that the time-expiring inventory will receive a transaction request at each of a set of test price and test times to expiration. The system further trains a regression tree model based on a set of training data comprising each of the request likelihoods from the set and the test price and test time period to expiration used to generate the demand estimate that was used to generate the request likelihood.

Demand prediction for time-expiring inventory

This disclosure includes methods for predicting demand based on the price of a time-expiring inventory. An online system provides a connection between a manager of a time-expiring inventory and a plurality of clients. The online system provides a listing for the manager's time-expiring inventory to clients on the online system. The manager specifies the price of the time-expiring inventory in the listing and is presented with price tips generated by the online system. A demand function predicts the demand for the time-expiring inventory based on features of the listing and the time-expiring inventory. A manager option function predicts the likelihood of acceptance of a price tip by the manager. The online system uses the demand function and the manager option function to create a Monte Carlo pricing model to provide to the manager price tips for the listing.

顯示器

【物品用途】;本設計物品，係用以提供設計獨特、結構簡單、造型美觀之顯示器。;【設計說明】;本設計之要點在於產品之形狀。本設計之顯示器除具有因功能所需而產生之基本造型之外，其正面下部相較於顯示屏向外凸出，且正面各比例協調，從而使得該顯示器正面富有層次感及美感。本設計顯示器儀藉由獨特之設計，改善其外觀，使得其更具美感。

Differentiable method for mining constant rules

Disclosed in the present invention is a differentiable method for mining constant rules. On the basis of defining constant operators and path operators according to a knowledge graph, a fusion attention mechanism is used to evaluate relations passed by rules by using attention values. Meanwhile, attentions are calculated by aggregating surrounding attributes and the corresponding attribute values for tail node of each hop respectively. Attentions of the attributes are used to enhance selection of relations in the rules to achieve link prediction. According to generated model parameters, high quality symbolic rules are output by parameter analysis and statistics. This method is particularly suitable for application scenarios with complex reasoning requirements that require high prediction accuracy, provide interpretations for predictions, and need to precipitate reasoning rules.

真空鍍膜系統的陰極裝置

Method and apparatus for assembling battery group into battery case

Vibration damper and overhead power transmission line

The present invention provides a vibration damper and an overhead power transmission line. The vibration damper includes: a first hammer body including a first connector; a second hammer body including a second connector; a shaft structure, the first connector and the 5 second connector being rotatably disposed around a central axis of the shaft structure, the shaft structure including an elastic element with deformation ability, the first connector and the second connector being both matched with the elastic element; and a clamping structure connected with the shaft structure, where the clamping structure includes a clamping channel, and an included angle is formed between a lengthwise extension direction of the clamping 10 channel and the central axis of the shaft structure, and the clamping structure is constructed to be capable of clamping a wire located in the clamping channel. The vibration damper in the technical solution of the present invention can solve the problem that a steel strand of existing vibration damper is prone to deformation and failure when subjected to a large impact force. 10/10 10 15 12 1 1 3 FIG. 11 20 21 25 22 24 23 FIG. 12

In-vivo Micro-robot for Nerve Stretching

Disclosed is an in-vivo micro-robot for nerve stretching, comprising a channel, and a movable part and a fixed part located at the channel. The movable part is disposed to be movable along the channel, the movable part sleeves the fixed part and is used for driving the fixed part to move along the channel, and the fixed part is connected to a nerve to be stretched. The in-vivo micro-robot is embedded into a patient's body through surgery, so that the extension of the nerve is accelerated and is regular and quantitative, thereby effectively solving the problems of small probability of nerve self-repair and long recovery period in traditional nerve bridging surgery.

室內植物源負離子激增裝置

一種室內植物源負離子激增裝置，該裝置以龍舌蘭科植作為植物源負離子的直接來源，以土壤或培養液作為耦合介質，對植物施以特定參數的負高壓脈衝信號，形成植物電信號與外加電信號耦合共振，脅迫植物釋放大量植物源負離子。同時，以離子空間均化裝置來實現植物源負離子在室內空間的遠距離輸送、長時間存留、均勻分佈，通過防觸電安全保護裝置消耗植物葉尖上的殘留電荷，保護人畜接觸植物時免受靜電電擊傷害，實現與現有室內負離子發生器所不同的安全、環保、生態的室內負離子生成新裝置。

極間式靶材陰極裝置

Negative ions rapidly increasing device featuring houseplants source

紙製展示架

Anti-robbery handbag

Snapping mechanism of scanner

Method and system for demulsification of waste oil emulsion by chaotic frequency pulsed electric field

Reduction and fixation device for fracture correction

The invention provides a reduction and fixation device for fracture correction, and relates to the technical field of orthopedic medical devices. The reduction and fixation device for fracture correction comprises: an aiming frame body including a fixation plate, a first rectangular frame, a support plate and a second rectangular frame, wherein two first sliding frames are slidingly arranged in the first rectangular frame, a first screw sleeve is arranged in the first sliding frame, upper and lower sides of the first screw sleeve are rotationally connected to an inner wall of the first sliding frame through a first rotating shaft, a second sliding frame is slidingly arranged in the second rectangular frame, a second screw sleeve is arranged in the second sliding frame, and front and rear sides of the second screw sleeve are rotationally connected to an inner wall of the second sliding frame through a second rotating shaft.

端板、电池模组及电池包

本实用新型涉及动力电池包技术领域，提供一种端板、电池模组及电池包。本实用新型所述的端板用于设置在电芯组之间，所述端板包括板体，所述板体的两侧面分别设有用于卡设扎带的多个卡槽，每个所述卡槽设置为沿所述板体的长度方向延伸，位于两侧面的所述卡槽沿所述板体的高度方向交错设置。本实用新型的端板通过在其两侧面沿高度方向上交错设置有能够容纳扎带的卡槽，使得多个电芯组堆叠时，利用扎带能够对位于端板两侧的电芯组实现交错捆扎，由此在电芯组堆叠长度较长的情况下，捆扎效果更佳牢靠，避免位于端板处的电芯下沉，进而确保电芯组运输、传递过程的稳定性，保证模组底部平面度良好，同时相应使得电芯堆叠后极柱平面度良好。

能遙控車庫門的行車紀錄器

External hard disk box structure

Manual rechargeable flashlight

Platform type scanning transmission structure

Card reader structure

Casting mold apparatus for battery electrode bridge

Preform disinfection method and bottle manufacturing device

Self - cooled mobile coated bearing tray

Sicilon carbide diode having high surge current capability and manufacturing method thereof

A silicon carbide diode having a high surge current capability, and including a semiconductor base plate. The semiconductor base plate includes an N-type silicon carbide substrate and an N-type silicon carbide epitaxial layer located on the N-type silicon carbide substrate. The upper portion of the N-type silicon carbide epitaxial layer is provided with a plurality of P-type well regions. The N-type high resistance region is provided under the P-type well region or on the lower surface of the P-type well region. The resistivity of the N-type high resistance region is greater than the resistivity of the N-type silicon carbide epitaxial layer. The N-type high resistance region is provided under the P-type well region, and a plurality of grooves are provided in the P-type well region or a plurality of block-shaped P-type regions uniformly arranged at intervals are provided in the N-type high resistance region.

Box structure of external connecting hard disk drive

蓄電池電橋的鑄型設備

一種蓄電池電橋的鑄型設備，包括：一基座，包括一穿孔；一隔熱框，設置在基座上且框設於穿孔的周緣；以及至少一直線位移隔片，可直線位移地設置在基座上，且直線位移隔片能位移至穿孔的上方；其中，至少一直線位移隔片具有至少一斜面，其中，一鑄型模具設置於基座下方，且鑄型模具包括至少一模槽，而至少一模槽相對於穿孔。

Image registration method and system for navigation in femoral neck fracture surgery

The present disclosure provides an image registration method and system for navigation in femoral neck fracture surgery, an electronic device, and a computer-readable storage medium. The method includes: obtaining femoral image data by a computed tomography (CT) imaging device before surgery and obtaining a surgical path planned by a doctor to generate a three-dimensional femoral image with the surgical path; obtaining, during the surgery, X-ray images photographed by an X-ray machine at different angles, and extracting feature points on each of the X-ray images; setting digitally reconstructured radiograph (DRR) virtual scene projection parameters based on a structure of the X-ray machine, projecting the three-dimensional femoral image with the surgical path to generate a plurality of DRR images, and extracting feature points on each of the DRR images; and automatically registering the DRR image and the X-ray image, and outputting a surgical path after registration.

具有載盤冷卻功能的鍍膜系統

本發明提供一種具有載盤冷卻功能的鍍膜系統，包含一包括一盤本體與一填置於盤本體中的相變化物質的載盤、一鍍膜站、一迴流裝置及一冷卻裝置。該鍍膜站包括一入口端與一出口端，該載盤能自該入口端進入該鍍膜站中以進行一鍍膜製程。該迴流裝置包括一設置在該鍍膜站外的傳送單元。該相變化物質能自該盤本體吸收一在鍍膜製程中所累積的熱能，以作為至少部分的相變化物質自一固態熔融成一液態時所需的潛熱，且相變化物質的熔點為介於18℃至95℃間。冷卻裝置能自相變化物質吸收該熱能，以令至少部分的相變化物質自該液態凝固成該固態。

自冷式移動式鍍膜承載盤

本發明提供一種自冷式移動式鍍膜承載盤，包含：一載盤單元，及一相變化物質。該載盤單元內部形成有一密閉空間。該相變化物質填置於該載盤單元的密閉空間中。該相變化物質能自該載盤單元吸收一熱能，以作為至少部分的該相變化物質自一固態熔融成一液態時所需的潛熱，且該相變化物質的熔點為介於18℃至95℃間。

Method and Apparatus for Detecting Traffic Anomaly, Device and Medium

Disclosed are a method and apparatus for detecting traffic anomaly, a device and a medium. The method includes: performing a network topology division operation on a network topology architecture to be detected, so as to obtain a plurality of security domains; acquiring a regional full traffic in each of the plurality of security domains, determining a traffic characteristic time series on the basis of regional full traffics, and analyzing the traffic characteristic time series to obtain a new traffic characteristic time series; constructing a traffic anomaly detection model, and performing distributed anomaly detection on the traffic characteristic time series by the traffic anomaly detection model, so as to obtain a detection result; and sending the detection result to an information processing center, so that the information processing center obtains anomalous asset devices and anomalous information according to the detection result.