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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
25-07-2023 дата публикации

Low-pressure low-density engine sand dust environment simulation device

Номер: CN116481756A
Автор: QIN WANGSHU, LIU HAIFENG, MA ZHANYUAN, QIN JIACHENG, YAN HONGNAN, WANG YUNXIANG, ZHOU WEN, ZHANG YUE
Принадлежит:

The invention provides a low-pressure and low-density engine sand and dust environment simulation device, belongs to the field of wind tunnel tests, and solves the problem that an existing environment simulation device is difficult to simulate a wind and sand environment with low density, high wind speed and large sand and dust diameter range span. Comprising an environment experiment module, a refrigeration system, a sand dust system and a pressure simulation system, the environment experiment module comprises a backflow type wind tunnel, a fan, a honeycomb device, an annular sand blasting device, an axial variable angle supporting mechanism and a wind tunnel heat exchange and filter, and the environment experiment module serves as a test main body and is connected with the pressure simulation system through an exhaust pipeline; the sand dust system penetrates through the wall of the wind tunnel through a conveying pipeline of air-in-sand and is connected with the annular sand blasting ...

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Номер записи: 1
28-07-2023 дата публикации

Composite cylindrical buoy

Номер: CN116495112A
Автор: CHEN JIANTAO, PEI LIANG, LIU SHIXUAN, WAN XIAOZHENG, WANG ZHI, ZHANG DAHAI, DING YUANQIANG, FAN XIUTAO, HUI LI, YANG JUNXIAN, ZHANG LI, BAI XUEJIAO, YANG YING, ZHAO HUANYU, QI YONG, LIU LEI, LI XUANQUN, MIAO BIN, WANG WENYAN, LIU HAIFENG, GUAN WANCHUN, NI WEI, YAO SHUJUN, JIANG TAO
Принадлежит:

The invention discloses a composite cylindrical buoy which comprises a buoy body system and a mooring system, the buoy body system comprises a mooring plate component, an underwater connecting component, a main floating body component, an overwater connecting component and a top observation platform, and the mooring plate component is connected with the mooring system. An underwater connecting component, a main floating body component, an overwater connecting component and a top observation platform are sequentially arranged above the mooring plate component from bottom to top, the mooring system comprises an anti-torsion steel cable and a gravity anchor component, one end of the anti-torsion steel cable is connected with the mooring plate component, and the other end of the anti-torsion steel cable is connected with the gravity anchor component. Vertical flow guide holes are evenly formed in the gravity anchor component, and an anchor positioning rod is arranged in the center of the bottom ...

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Номер записи: 2
18-04-2023 дата публикации

Homomorphic encryption method of deep learning model for natural language processing

Номер: CN115987479A
Автор: CHEN YUANMI, HUANG CHENGWEI, ZHU XIAOMING, KAN BAOCHUN, WEI WEI, ZHENG HAITIAN, LIU HAIFENG
Принадлежит:

The invention discloses a homomorphic encryption method of a deep learning model for natural language processing. The homomorphic encryption method comprises the following steps: firstly, obtaining an original symbol table according to data needing to be encrypted or the deep learning model needing to be used; generating a random symbol table which does not contain repeated symbols and is not smaller than the original symbol table in size according to the original symbol table, wherein symbols in the original symbol table and symbols in the random symbol table form a one-to-one or one-to-many mapping relationship; the random symbol table is used as a key K; dividing a piece of plaintext data corresponding to the deep learning model into symbol strings through a word segmentation algorithm; and mapping symbols in the symbol string into new symbols according to the key K, and serially connecting the new symbols to generate a ciphertext m encrypted by using the key K. When the method is used ...

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Номер записи: 3
14-07-2023 дата публикации

Shell-and-tube chemical looping combustion/gasification device and combustion/gasification method

Номер: CN116428586A
Автор: LIU WEIDONG, ZHOU YUFEI, ZHANG MINGBAO, TANG HUI, HAN JIAN, WEI GUOHUA, ZHANG SHAORUI, FANG XIAOLI, LIU BINCHAO, GUAN JINGYU, LIU HAIFENG, LI YUE, ZHAO HE, SHI YUNXIN
Принадлежит:

The invention discloses a shell-and-tube chemical looping combustion/gasification device and a combustion/gasification method. The oxygen carrier bears a large amount of heat, and the temperature of particles is higher than 1000 DEG C, so that the surfaces of the oxygen carrier particles are melted, sintered and inactivated, and the reaction in the reduction reactor cannot be carried out. The device comprises a fuel reactor (1), a return feeder (2), an air reactor (3) and a cyclone separator (4), the top of the air reactor is communicated with the cyclone separator through an air reactor exhaust pipe; an air reactor flue gas outlet is formed in the top of the cyclone separator, and the bottom of the cyclone separator is communicated with the bottom of the fuel reactor through a cyclone separator dipleg; the middle part of the fuel reactor is communicated with the material returning device through a conical material returning opening; and the bottom of the return feeder is communicated with ...

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Номер записи: 4
27-06-2023 дата публикации

Image segmentation model training method, image flaw direction discrimination method and application

Номер: CN116342977A
Автор: YE YING, LIU HAIFENG
Принадлежит:

The invention discloses an image segmentation model training method, an image flaw direction discrimination method and application, and the method comprises the steps: obtaining a training sample set which comprises a plurality of sample images; the training sample set is input into a target model to execute training, the target model comprises at least one instance standardization layer located between the convolution layer and the activation layer, and the instance standardization layer is used for executing instance standardization on a feature map output by the convolution layer; and determining the trained target model as an image segmentation model. According to the method, the instance standardization layer is introduced into the image segmentation model and is used for respectively standardizing the feature maps output by the convolution layer, so that the consistency of image style distribution is realized, the strong representation of the model on a specific color image background ...

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Номер записи: 5
18-04-2023 дата публикации

Pipeline transportation device in limited space

Номер: CN115973929A
Автор: LIU HAIFENG, DAI CHENGBIN, CHEN HEDA, ZHANG SHIYU, ZHANG GUOLI, LYU CHENGGANG, LIU MINGLIANG
Принадлежит:

The invention discloses a pipeline transportation device in a limited space, and relates to the technical field of pipeline transportation hoisting engineering in the limited space, the pipeline transportation device comprises a hoisting trolley, one side of the hoisting trolley is provided with a trailer, the top of the hoisting trolley is fixedly connected with a vertical rod, and the top of the vertical rod is provided with a hoisting arm; a balancing weight is arranged at the end, away from the trailer, of the vertical rod of the lifting arm, an electric hoist is arranged on the side, close to the trailer, of the vertical rod of the lifting arm, and pipe supports are arranged on the top of the trailer and the top, located below the electric hoist, of the lifting trolley. According to the invention, the use of winches can be greatly reduced, and the cost investment is saved; the device is simple in structure and convenient to operate; the device is an assembly type mechanism and is convenient ...

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Номер записи: 6
25-08-2023 дата публикации

Biomass micro-positive pressure oxygen-enriched double-section gasification device, gasification system and working method

Номер: CN116640607A
Автор: SUN XIANGWEN, LIU WEIDONG, SHEN JIE, LIU BINCHAO, YANG JUN, LIU HONG, XU YANHUI, ZHANG MINGBAO, WEI GUOHUA, JIANG XIAOGUO, LI ZHAOSHENG, GAO JIANAN, BI YANFEI, LI YUE, LIU HAIFENG
Принадлежит:

The invention relates to the technical field of biomass utilization equipment, in particular to a biomass micro-positive pressure oxygen-enriched double-section gasification device, a gasification system and a working method. The biomass micro-positive pressure oxygen-enriched double-section gasification device comprises a stock bin, biomass is arranged in the stock bin, and a material lock is arranged at the bottom of the stock bin; the low-temperature gasification furnace is connected with the material lock, an air chamber is arranged on the low-temperature gasification furnace, an ignition gun is arranged in the air chamber, and water vapor and pure oxygen are introduced into the air chamber; the bed material adding device is connected with the low-temperature gasification furnace; the cyclone separator is connected with the low-temperature gasification furnace, and the cyclone separator is used for separating low-temperature synthesis gas and solids; by adopting pure oxygen combustion ...

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Номер записи: 7
18-07-2023 дата публикации

Sand dust recoverable type backflow sand dust wind tunnel

Номер: CN116448375A
Автор: MA ZHANYUAN, LIU HAIFENG, QIN JIACHENG, ZHANG YUE, WANG YUNXIANG
Принадлежит:

The invention provides a sand and dust recoverable backflow sand and dust wind tunnel, solves the problem that sand and dust are difficult to recover, and belongs to the field of wind tunnel test equipment research. Comprising a wind tunnel, a sand blocking device, a sand dust ejector, a temperature and humidity bypass unit, a speed regulation branch fan, a dust discharging fan, a small bin type pump set, a large bin type pump set, a sand adding device, a Laval nozzle, an air compressor module, a flow scale, a sand dust separator set, a conveying pump, a dust adding device, a Roots blower and a dust remover. Then the sand dust is distributed by the flow scale, passes through the Laval nozzle and is ejected by the sand dust ejector; the wind tunnel dust removal opening is used for removing dust in the circulating air duct, after the dust is removed through the dust remover, one part of the dust is discharged outdoors, and the other part of the dust is introduced and conveyed to the sand-dust ...

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Номер записи: 8
08-09-2017 дата публикации

Method for recognizing non-linear damping coefficients of large-amplitude rolling motion of ship

Номер: CN0107140110A
Автор: SUN JINWEI, ZHAO HUANYU, XU YUZHE, WAN XIAOZHENG, ZHANG JIMING, LIU HAIFENG, LI XUANQUN, ZHENG SHANSHAN, CHAI HUI
Принадлежит:

... 本发明公开了种船舶大幅横摇运动非线性阻尼系数识别方法，包括如下步骤：确定船舶非线性横摇运动方程，确定船舶横摇角幅值随时间变化解析表达式，推导相邻半个周期的横摇角幅值变化解析式，绘制船舶横摇消灭曲线，并进行曲线拟合，计算非线性阻尼系数c和c的估算值，进行阻尼系数修正，计算阻尼系数最终识别值，本方法能够克服现有船舶横摇非线性阻尼系数识别技术的不足，具有较高的识别精度。 ...

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Номер записи: 9
01-08-2023 дата публикации

Education field subject knowledge graph construction method and device based on deep learning

Номер: CN116521886A
Автор: CAO LIU, HUANG CHENGWEI, ZHU XIAOMING, WANG QIHAO, LIU HAIFENG, HE GUIJIA, JU RAN
Принадлежит:

The invention discloses an education domain knowledge graph construction method and device based on deep learning. The method comprises the following steps: firstly, acquiring multi-source data of an education domain; performing structured extraction on the multi-source data to obtain keywords and knowledge points; then, according to the front-back relation between the keywords, a keyword skeleton is formed; then extracting a preposition and postposition association relationship from the knowledge points by applying a keyword skeleton; deriving a knowledge point framework by applying a keyword skeleton and a knowledge point front-back relation; and finally, performing knowledge fusion in an unsupervised mode and a similarity calculation mode by using a knowledge point framework, and constructing a subject knowledge graph. According to the method, knowledge points and association relationships are extracted from total massive teaching resource data, and the teaching resource knowledge graph ...

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Номер записи: 10
14-04-2023 дата публикации

Method for predicting delivery time based on survival analysis

Номер: CN115956934A
Автор: LIU YAN, XU JINSHAN, CHEN ZHENQIN, HU FENGDAN, WANG MENGTING, LIN YIWEI, LIU HAIFENG
Принадлежит:

A method for predicting delivery time based on survival analysis comprises the following steps: step S1, collecting a multi-channel uterus electromyographic signal with a certain duration, and converting the multi-channel uterus electromyographic signal into a digital signal; s2, preprocessing the uterus electromyographic signals; s3, utilizing a time domain analysis method and a frequency domain analysis method to extract uterus electromyographic signal characteristic parameters; s4, performing feature selection on the extracted features to form a feature vector x of the uterus electromyographic signal sample; s5, taking feature vectors of the uterus electromyographic signals recorded for n times from the starting moment to the event occurrence moment t to obtain track data X = [x1, x2,..., xn] recorded for n times; s6, inputting the trajectory data obtained in the step S5 into an auto-encoder to reconstruct the trajectory data so as to expand the number of samples; and S7, establishing ...

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Номер записи: 11
16-05-2023 дата публикации

Knowledge graph-based person and post personalized matching recommendation method and system

Номер: CN116127186A
Автор: LIU HAIFENG, HUANG CHENGWEI, ZHU XIAOMING, KAN BAOCHUN, WEI WEI, ZHENG HAITIAN, CHEN YUANMI
Принадлежит:

The invention discloses a knowledge graph-based personnel and job personalized matching recommendation method and system, and the method comprises the steps: collecting recruitment position information issued by a recruitment enterprise, carrying out the data processing, obtaining a recruitment position triple through relation extraction, and obtaining a position knowledge graph; historical job hunting behavior data including click browsing, comment and collection of the user are collected, and a position data set preferred by the user is obtained; taking a position data set preferred by the user as a seed, and acquiring multi-hop position information and a relationship thereof from the position knowledge graph by applying a RippleNet algorithm to obtain a triple of entity interaction between the user and the position knowledge graph; constructing and training a multi-task recommendation model based on a knowledge graph and fusing user preferences, wherein the multi-task recommendation ...

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Номер записи: 12
04-04-2023 дата публикации

Adjustable snow scattering device applied to low-speed wind tunnel

Номер: CN115901166A
Автор: MA ZHANYUAN, LIU HAIFENG, YAN HONGNAN, QIN JIACHENG, WANG YUNXIANG
Принадлежит:

The invention belongs to the field of wind tunnel tests, and particularly relates to an adjustable snow scattering device applied to a low-speed wind tunnel. Comprising a frame beam support, a snow scattering mechanism and a snow containing vehicle, a transverse rail is installed on the frame beam support, the snow containing vehicle comprises a vehicle body frame and a snow containing groove, guide wheels are installed at the bottom of the vehicle body frame, the guide wheels are located on the rail, the snow containing vehicle transversely moves along the rail, a plurality of sieve holes arranged in an array mode are formed in the bottom of the snow containing groove, and the sieve holes are communicated with the snow containing groove. The upper ends of the two side walls of the snow containing groove are hinged to the two sides of the upper portion of the vehicle body frame, the snow scattering mechanism is fixedly connected with the side face of the vehicle body frame, the driving ...

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Номер записи: 13
13-06-2023 дата публикации

Controllable coating for thermal dye sublimation transfer paper

Номер: CN116254721A
Автор: LIU HAIFENG, SHA JINLAN, WANG YING
Принадлежит:

The invention discloses a controllable coating for thermal dye sublimation transfer paper, which is prepared from the following components in parts by weight: 30 to 45 parts of sodium carboxymethyl cellulose, 1.5 to 3.0 parts of polyurethane emulsion, 12 to 18 parts of styrene-butadiene latex, 10 to 15 parts of ethyl acrylate-methacrylamide copolymer emulsion, 8 to 12 parts of acrylic acid-2-ethylhexyl acrylate and 15 to 20 parts of composite modified starch, the coating is prepared from 10-15 parts of polyethylene glycol modified polylactic acid emulsion, 8-13 parts of nano titanium dioxide, 18-25 parts of starch modified light calcium carbonate, 5-8 parts of talcum powder, 32-45 parts of neodymium magnet powder, 25-33 parts of microcapsules and the like. Through the mode, according to the controllable coating for the thermal dye sublimation transfer paper, a free medium of a modified material is provided for the paper base through the magnetic microcapsules, and the distribution density ...

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Номер записи: 14