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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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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 9. Отображено 9.
06-06-2023 дата публикации

River and lake water quality purification system loaded with composite filler

Номер: CN116216914A
Принадлежит:

The invention discloses a river and lake water quality purification system loaded with composite filler, which comprises a filler filling frame, a composite filler layer, a water pump, a floating plate and a fixed guide rail, the composite filler layer is arranged in the filler filling frame, the filler filling frame is enclosed into a central part, the fixed guide rail is vertically fixed at the center of the central part, and the water pump is arranged in the fixed guide rail. The water pump is fixedly installed on the fixed guide rail and floats up and down along the guide rail, and the floating plate is installed on the water pump. After being treated by the method, the total phosphorus concentration in the river or lake water body can be reduced by 60%-95%, the chemical oxygen demand and the biochemical oxygen demand can be reduced by 75%-90%, and the removal rate of ammonia nitrogen is 75%-95%.

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07-04-2023 дата публикации

Photovoltaic direct current grid-connected system based on diode valve and fault protection method

Номер: CN115940115A
Принадлежит:

The invention discloses a photovoltaic direct-current grid-connected system based on a diode valve and a fault protection method, and provides the photovoltaic direct-current grid-connected system based on the diode valve in order to solve the problem that an existing photovoltaic direct-current sending-out system based on a direct-current circuit breaker is too high in construction cost, and the photovoltaic direct-current grid-connected system based on the diode valve comprises a photovoltaic module, a Boost circuit and a direct-current boosting transformer, a direct-current power transmission line, a direct-current line isolation switch, a direct-current discharge device and a diode valve; a fault protection method is provided for the system. Compared with the existing photovoltaic direct current grid-connected system, the system and the fault protection method provided by the invention can obviously reduce the engineering construction cost on the basis of ensuring the safe and stable ...

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26-08-2015 дата публикации

Defect grade classification method for circuit breaker based on KNN algorithm

Номер: CN104866574A
Принадлежит:

The present invention relates to a defect grade classification method for a circuit breaker based on the KNN algorithm. The conventional grade classification method depends on empirical judgment of a operation and maintenance personnel, which is time and labor consuming, and is greatly subject to human factors. According to the present invention, a "circuit breaker defect text lexicon" is firstly built, and a text preprocessing method is proposed in consideration of the characteristic that the circuit breaker defect text pertains to short texts, and the circuit breaker defect text is directly converted to a directly calculatable vector. Subsequently, by using the KNN algorithm, several texts most approximate to the defect text to be classified are found, and a defect grade of the defect text to be classified is determined by means of weighted calculation. The method according to the present invention achieves a high classification calculation efficiency for circuit breaker defect texts, ...

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23-07-2014 дата публикации

Self-electricity-generating electronic chest expander

Номер: CN103933700A
Автор: WANG LONGXIANG, MA RUNZE
Принадлежит:

The invention discloses a self-electricity-generating electronic chest expander which comprises an electro-magnetic induction electricity generating device (1), a digital chip (2), a display screen (3) and an elastic cable (4). The electro-magnetic induction electricity generating device (1) comprises a permanent magnet, a coil and an electricity storing device, the permanent magnet is surrounded by the coil, elastic potential energy is converted into electric energy to charge the electricity storing device, the electricity storing device supplies electricity for the digital chip (2) and the display screen (3), and the electro-magnetic induction electricity generating device (1) is located at one end or two ends of a pulling handle of the electronic chest expander; the digital chip (2) is used for calculating and storing the tensile force, the pulling time number and the consumed energy; the tensile force, the pulling time number and the consumed energy can be displayed through the display ...

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09-05-2023 дата публикации

Cross-platform application program anomaly detection method and system based on transfer learning

Номер: CN116089944A
Принадлежит:

The invention discloses a cross-platform application program anomaly detection method and system based on transfer learning, and the method comprises the steps: extracting a feature file from a to-be-detected file, screening the file content, and converting the feature file into a picture through a file visualization method for representing the current to-be-detected file; a residual network is used for classification, and meanwhile, transfer learning is applied to improve a new learning task by transferring knowledge from learned related tasks, so that the defects that most machine learning algorithms can only solve a single task and the generalization ability of a model is insufficient are overcome, and the contradiction between a universal model and a personalized demand is relieved. The method can effectively identify the attribute of the to-be-tested file, and can effectively improve the defect that the current method is poor in generalization ability and can only solve a single task ...

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15-08-2023 дата публикации

Offshore photovoltaic full-direct-current grid-connected system and control method

Номер: CN116599124A
Принадлежит:

The invention discloses an offshore photovoltaic full-direct-current grid-connected system and a control method. The offshore photovoltaic full-direct-current grid-connected system comprises a photovoltaic module, a Boost circuit, a direct-current boosting transformer, a direct-current collecting submarine cable, an offshore DC/DC booster station, a direct-current sending submarine cable and an onshore DC/AC converter station. According to the scheme, a complex alternating current-direct current conversion link in a traditional offshore photovoltaic alternating current grid connection scheme is optimized, system loss and primary equipment investment are reduced, and good economic benefits and application prospects are achieved.

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28-07-2023 дата публикации

Self-supervised image contrast learning method and system based on feature diversification

Номер: CN116503660A
Принадлежит:

The invention discloses a self-supervised image contrast learning method and system based on feature diversification, and the method comprises the steps: model training and testing: extracting a high-dimensional feature vector, namely a corresponding low-dimensional feature vector, of an enhanced sample during model training, and carrying out the normalization of the low-dimensional feature vector; the similarity probability of the normalized low-dimensional feature vectors of one image is calculated, and then the probability that the two normalized low-dimensional feature vectors belong to the same picture is calculated; calculating comparison loss according to the probability that the two normalized low-dimensional feature vectors belong to the same picture, and calculating simple distance loss according to the normalized low-dimensional feature vector of one image; and adding a high-rank regularization term on the comparison loss or the simple distance loss as a final loss function.

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09-05-2023 дата публикации

Decarburization and dephosphorization composite water purification reactor

Номер: CN116081798A
Принадлежит:

The invention discloses a decarburization and dephosphorization composite water purification reactor, which comprises a filler filling frame, a dephosphorization filler layer, a water pump, a floating plate and a fixing rope, the dephosphorization filler layer is arranged in the filler filling frame, the filler filling frame is enclosed to form a central part, the water pump is arranged in the center of the central part, and the floating plate is arranged in the central part. The water pump is installed in the filler filling frame and connected with the inner wall of the center of the filler filling frame through a plurality of fixing ropes, the floating plate is installed on the water pump, and the water pump can float on the water surface through the floating plate and changes up and down along with changes of the water level. After being treated by the method, the total phosphorus concentration in the river or lake water body can be reduced by 60%-95%, the chemical oxygen demand and ...

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27-06-2023 дата публикации

Container type offshore electrolytic hydrogen production system

Номер: CN116334658A
Принадлежит:

The invention relates to a container type offshore electrolytic hydrogen production system. The method is suitable for the new energy field. The technical problem to be solved by the invention is to provide the container type marine electrolytic hydrogen production system. According to the technical scheme, the container type offshore electrolytic hydrogen production system is characterized in that the container type offshore electrolytic hydrogen production system is provided with a plurality of containers, and each container is internally provided with an electrolytic hydrogen production module which is provided with an electrolytic bath, a gas-liquid separator and a purification device which are sequentially communicated; the rectification voltage transformation module is used for converting the high-voltage power of the offshore wind power into alternating current and direct current which are required by the electrolytic hydrogen production module to work; the seawater treatment module ...

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