Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 11. Отображено 11.
06-06-2023 дата публикации

Dust falling device

Номер: CN116220789A
Автор: YAN JIE, WANG BIN, HOU ZHANSHAN, LIU XUANYU, ZHANG YU
Принадлежит:

The invention provides a dust fall device which comprises a vertical dust fall mechanism, an adjusting dust fall mechanism and a trigger mechanism, the adjusting dust fall mechanism is arranged on the vertical dust fall mechanism and comprises a first dust fall assembly, and the first dust fall assembly has an initial position and a dust fall position for carrying out dust fall on a target object; the first dust falling assembly is movably arranged between an initial position and a dust falling position relative to the vertical dust falling mechanism; the trigger mechanism is connected with the first dust falling assembly, and a control signal is sent to the first dust falling assembly through the trigger mechanism to control the first dust falling assembly to move between the initial position and the dust falling position. The vertical dust falling mechanism is arranged to carry out dust falling on the target area, the adjusting dust falling mechanism is used for carrying out dust falling ...

Подробнее
Номер записи: 1
25-08-2023 дата публикации

Depth clustering radar pulse signal sorting method based on inner product distance measurement

Номер: CN116643246A
Автор: ZENG LINGHUA, GU JIE, GAO YOUBING, YUAN ZELIN, LIANG CHAO, ZHAO YAODONG, LIU XUANYU, LIU DONGSHENG
Принадлежит:

The invention provides a depth clustering radar pulse signal sorting method based on inner product distance measurement, and relates to the technical field of signal and information processing.The method comprises the steps that firstly, a machine learning algorithm is used for metric learning, and a neural network model based on an attention mechanism is used for conducting feature extraction on input data; and then clustering operation is carried out by using the extracted features. According to the method, supervised distance metric learning is carried out by using label data, and a clustering feature distance is consistent with a loss function during training by using a distance metric function and a loss metric function based on an inner product, so that high-accuracy separation of radar signals in a complex electromagnetic environment is realized; and the algorithm can be used for detecting unknown radars, so that a certain sorting effect is achieved.

Подробнее
Номер записи: 2
08-08-2023 дата публикации

Metalearning-based small sample target identification method, medium and device

Номер: CN116561510A
Автор: YUAN ZELIN, GU JIE, LI PENGFEI, ZHAO YAODONG, ZHANG WEI, GAO YOUBING, LIU DONGSHENG, LIU XUANYU, ZENG LINGHUA
Принадлежит:

The invention provides a small sample target identification method based on meta-learning, which realizes small sample target identification by utilizing distance judgment of a twin network, and comprises the following steps: S1, acquiring radiation source data and preprocessing the radiation source data into a training data set; s2, inputting the training data set into a twin network for training by taking one of the data pairs as a data pair, and obtaining a twin network model for small sample target recognition after training is completed; s3, forming a data pair by the small sample mode data to be judged and the small sample mode data with the label, and inputting the data pair into the twin network model to obtain a corresponding distance metric value; s4, calculating a mean value of the distance metric values corresponding to each radiation source and the to-be-judged small sample mode data; and S5, finding the minimum value of the mean values, and judging the small sample mode data ...

Подробнее
Номер записи: 3
13-06-2023 дата публикации

Five-axis curved surface grinding, polishing and wire drawing integrated machining equipment

Номер: CN116252218A
Автор: LIU DEGANG, LIU JIELIN, LIU XUANYU
Принадлежит:

The invention discloses five-axis curved surface grinding, polishing and wire drawing integrated machining equipment which comprises a four-axis machine table and an integrated machining machine head. An X shaft, a Y shaft, a Z shaft and a C shaft rotating around the Z shaft are arranged in the four-shaft machine table; the integrated machining machine head comprises a mechanism base, the mechanism base is provided with a B shaft rotating around the Y shaft and a rotating base installed on the B shaft, and a B shaft rotating motor drives the rotating base to rotate around the B shaft; a Y-axis moving module, an X-axis moving module, a Z-axis lifting module, a C-axis rotating motor and a B-axis rotating motor are arranged and matched to drive a product and a grinding wheel piece (polishing wheel piece) or a wire drawing wheel to be matched in five-axis relative positions, grinding, polishing and wire drawing work of the surface of the curved-surface special-shaped product is achieved, the ...

Подробнее
Номер записи: 4
11-04-2023 дата публикации

Method for improving flavor quality and functional characteristics of sea cucumber polypeptide through ultrasonic low-heat mild synergistic enzyme deactivation

Номер: CN115944089A
Автор: CHEN YUEWEN, JIN DANLI, HONG XINGDE, CHENG YICHAO, FU JINGJING, LONG YONGJIE, LIU XUANYU, DUAN WENHUI
Принадлежит:

The invention discloses a method for improving flavor quality and functional characteristics of sea cucumber polypeptide by ultrasonic low-heat mild synergistic enzyme deactivation, which comprises the following steps: pretreatment: washing sea cucumber, dicing, adding distilled water, adding neutral protease to form an enzyme solution, and carrying out enzymolysis for 2-8 hours at a constant temperature of 45-55 DEG C; performing ultrasonic low-heat mild synergistic enzyme deactivation: after enzymolysis is finished, putting enzymatic hydrolysate into ultrasonic treatment equipment for ultrasonic treatment; performing vacuum low-heat dehydration: cooling, pre-freezing, and performing vacuum dehydration to obtain sea cucumber polypeptide; and evaluating the enzyme activity and polypeptide quality: comprehensively evaluating the quality characteristics of the neutral protease and the sea cucumber polypeptide by measuring the enzyme activity, the particle size and the potential of the neutral ...

Подробнее
Номер записи: 5
06-06-2023 дата публикации

Non-intrusive smart home digital forensics system and method based on strategy model

Номер: CN116224809A
Автор: FU XIAO, LIU XUANYU, LUO BIN
Принадлежит:

The invention provides a non-intrusive smart home digital forensics system and method based on a strategy model, and the system employs a plurality of distributed data acquisition modules, employs a network side channel analysis technology, obtains the digital forensics data from an Internet of Things device from a local environment of a smart home system, and carries out the collection of the digital forensics data. And a unified data format is defined based on the data traceability model, so that the digital forensics data can be managed consistently. Based on the strategy model, the invention designs a digital forensic analysis method model with higher applicability and transportability, and can efficiently utilize the data traceability graph to carry out security analysis on the smart home system from a global perspective, so that potential safety hazards can be found, and the security of the smart home system is enhanced.

Подробнее
Номер записи: 6
18-08-2023 дата публикации

Full-pulse pixelated feature expression method, medium and device

Номер: CN116609728A
Автор: YUAN ZELIN, SHI XIAOWEI, ZHAO YAODONG, ZENG LINGHUA, MOU HAO, GAO YOUBING, LIU DONGSHENG, LIU XUANYU
Принадлежит:

The invention provides a full-pulse pixelated feature expression method, which comprises the following steps of: fusing a full-pulse PDW sequence into time dimension information to realize full-pulse equal-time-interval sampling so as to realize full-pulse pixelated feature expression. The invention provides a full-pulse pixelation feature expression method, namely full-pulse pixelation, aiming at the problem that the fluctuation and jitter feature expression of each feature parameter of a full-pulse PDW sequence along with the time change is not clear, and the method is characterized in that the full-pulse PDW sequence is fused into time dimension information to realize full-pulse equal-time-interval sampling, so that the full-pulse PDW sequence can be used for realizing full-pulse equal-time-interval sampling. The pixelated full-pulse PDW sequence carries time information and does not depend on the representation of time of arrival (TOA) any more, and the pixelated PDW pulse sequence ...

Подробнее
Номер записи: 7
07-04-2023 дата публикации

Indirect carbon emission accounting method and device based on power grid operation and medium

Номер: CN115935132A
Автор: LI XIANG, LIU XUANYU, QI XIAOYAN, LEE SUNG JUN, TONG BOLIN, MENG QINGLONG, WU SONGYU, ZHANG ZHONG, LYU JING, XU TIANYUAN, LI HAIQIANG, ZHANG SHIQI, WU JING, ZHANG JIANFENG
Принадлежит:

The invention relates to an indirect carbon emission accounting method and device based on power grid operation and a medium, and the method is characterized in that the method comprises the following steps: 1, calculating the unit carbon emission intensity of each node in a power generation side and a power transmission side of a power grid, and constructing a carbon emission intensity matrix based on the topological connection relation of the power grid; wherein the unit carbon emission intensity of the node on the power generation side of the power grid is determined based on the actual coal consumption, steam energy storage and fire coal combustion state of the thermal power generating unit on the node; and step 2, based on the operation power of each power generation device and each power transmission branch in the power grid and the carbon emission intensity matrix, calculating the carbon emission of the power grid so as to realize regulation and control of the operation state of ...

Подробнее
Номер записи: 8
01-08-2023 дата публикации

Portable projection calligraphy practicing drawing pen

Номер: CN116512795A
Автор: LIAN CHENGFEI, LIU XUANYU
Принадлежит:

The invention relates to the technical field of projection pens, and particularly discloses a portable projection calligraphy practicing and drawing pen which comprises a top column, a camera is arranged on the outer wall of the top column, a power socket is formed in the top end of the top column, a power key is arranged at the top end of the top column, the bottom end of the top column is in threaded connection with a fixing column, and a battery is arranged on the inner side of the fixing column; the sleeve column is fixedly connected to the bottom end of the fixed column; according to the projection calligraphy practicing drawing pen, a user can conveniently and rapidly fix the position of the drawing pen, meanwhile, the projection pen is rapidly installed on a table top, meanwhile, a camera, a battery and a chip fixedly installed on the inner side of a top column are arranged on the inner sides of the top column and a fixing column, and therefore the integrated projection calligraphy ...

Подробнее
Номер записи: 9
29-08-2023 дата публикации

Portable valve operation torque wrench

Номер: CN116652865A
Автор: XIONG WEINENG, ZHAO FENG, FAN WEIBIN, WANG BIN, CHEN XIAOQIANG, LI GUANGLIANG, CHEN ZHEDONG, GU YUETING, CHEN YONG, LIU XUANYU
Принадлежит:

The invention discloses a portable valve operation torque wrench, which is used for opening and closing a valve driven by a hand wheel, and comprises a rod body used for applying torsion on the hand wheel of the valve; the valve hand wheel clamping head is arranged on the rod body and used for being connected with a hand wheel of the valve. When the valve handle is used, the valve handle clamping head is clamped on the handle, force is applied to the rod body, the rod body generates a lever effect on the handle, the acting force applied to the rod body by an operator is amplified on the handle clamping head, the handle wheel is operated with larger torsion, and therefore the handle wheel can be rotated more easily to open and close a valve. Therefore, a large valve can be opened and closed more easily by means of the valve, and the valve is simple in structure, rapid to disassemble and assemble and convenient to use. The invention further discloses a using method of the portable valve operation ...

Подробнее
Номер записи: 10
18-08-2023 дата публикации

Process for improving quality of quartz crucible

Номер: CN116606127A
Автор: YANG HAO, LIU XUANYU
Принадлежит:

The invention discloses a technology for improving the quality of a quartz crucible, and belongs to the field of quartz crucible preparation, the technology for improving the quality of the quartz crucible comprises the following steps: S1, pretreatment of quartz sand before raw material proportioning; s2, the matching proportion and the treatment mode of the crucible raw materials are determined; s3, crucible blank forming; and S4, the crucible blank is subjected to a firing process and finishing, in the S1, quartz sand is subjected to primary degassing in a muffle furnace in a calcination mode, the calcination temperature of the muffle furnace is 850-1100 DEG C, the calcination time is 1 hour, and in the S2, the quartz sand is subjected to secondary degassing in the muffle furnace. The proportioning and treatment mode of the raw materials of the crucible comprises the following steps: a, selecting 94% of quartz sand, 2.5% of kaolin, 1.5% of calcium carbonate, 1% of sodium fluosilicate ...

Подробнее
Номер записи: 11