Abstract: An ecological management method and system for tropical marine ranching, a device, and a medium are provided, which relates to fishery resource management technologies. The method includes: obtaining ecological environment data and energy flow analysis data of a target marine ranching; performing ecological evaluation on the ecological environment data to determine an ecological comprehensive evaluation result, the ecological comprehensive evaluation result includes a health condition evaluation and an ecosystem stability evaluation of the tropical marine ranching; performing, based on the energy flow analysis data and the ecological comprehensive evaluation result, bio-capacity evaluation by using an Ecopath energy flow model to obtain a current bio-capacity; and performing ecological management and developing an ecological management strategy based on the current bio-capacity, the ecological management strategy includes an enhancement and releasing scheme and a fishing scheme.

Abstract: Provided is a side wall window structure module of a train, the side wall window structure module comprising a window wallboard (100), supporting members shaped like the Chinese character “” and reinforcing members shaped like the Chinese character “”, and stand columns (210) and supporting cross beams (311, 312, 313, 314) using the supporting members shaped like the Chinese character “”, wherein two flanging edges of each supporting member shaped like the Chinese character “” are fixed on the inner side, facing the interior of the train, of the window wallboard (100); each reinforcing member shaped like the Chinese character “” comprises a longitudinal reinforcing member (220) and a transverse reinforcing member (320); two flanging edges of each reinforcing member shaped like the Chinese character “” are fixed to one side edge of each supporting member shaped like the Chinese character “”; and an arched high edge of each reinforcing member shaped like the Chinese character “” is fixed to the other side edge

Abstract: Disclosed are a photovoltaic energy storage offline coordination system and method based on demand management. The system includes a photovoltaic generator set, an inverter, a dispatch and control device for charge-discharge, a load monitor, a first and second energy storage device, and a remote console. The photovoltaic generator set is electrically connected to the dispatch and control device for charge-discharge via the inverter; the first energy storage device is connected to a load-side power supply bus via a first dispatch and control unit; the second energy storage device is connected to the load-side power supply bus via a third dispatch and control unit; a second dispatch and control unit is connected to the load-side power supply bus; the load monitor is provided at the load-side power supply bus, and configured to monitor a load of the load-side.

Abstract: Overlapping data streams and sensor transitions is described. In accordance with the described techniques, a first data stream of first analyte measurements is received, at a computing device and during an overlap period, from a first analyte sensor worn by a user and a second data stream of second analyte measurements is received, at the computing device and during the overlap period, from a second analyte sensor worn by the user. The first data stream and the second data stream are received concurrently during the overlap period. A combined analyte measurement is generated based on the first analyte measurements and the second analyte measurements. In one or more implementations, the combined analyte measurement is generated as a weighted average of the first analyte measurements and the second analyte measurements. The combined analyte measurement is then output on a display of the computing device.

Abstract: Disclosed are a net load forecasting method and apparatus for a new energy electric power market. The method includes: obtaining and performing data preprocessing on new energy output data and external environmental data, and extracting strongly correlated features from the new energy output data and the external environmental data after the data preprocessing; performing feature expansion on the strongly correlated features, and inputting the strongly correlated features after the feature expansion into a preconstructed regression forecasting model, to obtain a first forecast value; obtaining and performing data preprocessing on user load data and load influencing factor data, and inputting the user load data and the load influencing factor data after the data preprocessing into a FNN-LSTM hybrid model, to obtain a second forecast value; and calculating a difference between the second forecast value and the first forecast value, to obtain a net load forecasting result.

Abstract: A fingerprint prompt pattern display method includes obtaining a first trigger instruction, where the first trigger instruction is used to instruct to display a fingerprint prompt pattern; and displaying N preset fingerprint prompt patterns in a fingerprint prompt area in turn, where display positions of displaying the N fingerprint prompt patterns in the fingerprint prompt area do not completely overlap, and N is an integer greater than or equal to 2.

Abstract: The present application provides a control method, an auxiliary power supply of a photovoltaic inverter, and a photovoltaic power generation system. The auxiliary power supply includes a rectifier circuit and a conversion circuit with at least one output terminal. The conversion circuit includes a voltage determining unit and a power determining unit. The conversion circuit is coupled to an output terminal of the rectifier circuit, and is configured to convert direct current power into at least one auxiliary voltage. The power determining unit and the voltage determining unit are coupled to an input terminal of the inverter circuit or an input terminal of the photovoltaic inverter, which are configured to obtain output power and an output voltage of the solar panel, respectively. When the output voltage is greater than the start-up voltage and the output power is greater than the start-up power, the auxiliary power supply starts.

Abstract: The present disclosure describes techniques for user guidance of a creation mode. The techniques comprise acquiring creation guidance information for a user, the creation guidance information configured to guide the user to use a creation function in an application, and the creation function configured to create first multimedia content; presenting, in a current page of the application, second multimedia content created in a creation mode and a visual representation corresponding to the creation guidance information, the visual representation comprising a creation user interface element, the creation user interface element configured to enable the application to enter the creation mode for initiating a creation of the first multimedia content; and presenting a creation page associated with the creation function based on interaction associated with the visual representation.

Abstract: Provided are a method and apparatus for user guidance, a device and a storage medium. The method includes: acquiring creation guidance information for a user, the creation guidance information being used for guiding the user to use a creation function in an application, and the creation function being used for creating multimedia content. The method further includes: in a case where the application is in an active state, presenting, in an active page of the application, a visual representation corresponding to the creation guidance information. The method further includes: switching, on the basis of interaction associated with the visual representation, from the active page to a creation page associated with the creation function. In this way, the user can be guided and promoted to use the creation function of the application.

Abstract: Disclosed is a power conversion circuit, comprising a three-phase inductor and a switching conversion unit, and the three-phase inductor is integrated into a magnetic assembly, the magnetic assembly comprising: two magnetic yokes relatively parallel to each other; a first, a second and a third winding column spaced apart sequentially and located between the two magnetic yokes, and three windings wound around the first, the second and the third winding column in one-to-one correspondence for forming an phase inductor of the three-phase inductor respectively, and phase differences between power frequency currents flowing in any two of the windings are 120°; wherein when a reference current is applied to each of the windings, magnetic fluxes on the first and the third winding column have a first reference direction, and a magnetic flux on the second winding column has a second reference direction opposite to the first reference direction.

Abstract: The present disclosure provides a rapid shutdown device for a photovoltaic system, which is connected between a photovoltaic power generation module and a photovoltaic inverter and comprises an input port and an output port. The rapid shutdown device further comprises: a first switch and a second switch; a third switch and a fourth switch; a controller coupled to control terminals of the first switch, the third switch, and the fourth switch, and configured to control on and off of the first switch, the third switch, and the fourth switch, so that the rapid shutdown device operates in a normal state, a bypass state or a shutdown state.

Abstract: Provided are a method and apparatus for user guidance, a device and a storage medium. The method includes: acquiring creation guidance information for a user, the creation guidance information being used for guiding the user to use a creation function in an application, and the creation function being used for creating multimedia content. The method further includes: in a case where the application is in an active state, presenting, in an active page of the application, a visual representation corresponding to the creation guidance information. The method further includes: switching, on the basis of interaction associated with the visual representation, from the active page to a creation page associated with the creation function. In this way, the user can be guided and promoted to use the creation function of the application.

Abstract: It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter circuit, each of the input circuit electrically coupled to the inverter circuit through a positive bus and a negative bus, with a first equivalent impedance Rp between the positive bus and a protective earth point and a second equivalent impedance Rn between the negative bus and the protective earth point. The detection circuit includes: a bus voltage sampling circuit coupled to the positive bus and the negative bus for generating a first bus voltage and a second bus voltage; a protective earth voltage sampling circuit coupled to the protective earth point for generating a first protective earth voltage and a second protective earth voltage; and a controller for calculating an equivalent insulation impedance.

Abstract: The present application provides a control method, an auxiliary power supply of a photovoltaic inverter, and a photovoltaic power generation system. The auxiliary power supply includes a rectifier circuit and a conversion circuit with at least one output terminal. The conversion circuit includes a voltage determining unit and a power determining unit. The conversion circuit is coupled to an output terminal of the rectifier circuit, and is configured to convert direct current power into at least one auxiliary voltage. The power determining unit and the voltage determining unit are coupled to an input terminal of the inverter circuit or an input terminal of the photovoltaic inverter, which are configured to obtain output power and an output voltage of the solar panel, respectively. When the output voltage is greater than the start-up voltage and the output power is greater than the start-up power, the auxiliary power supply starts.

Abstract: The present disclosure provides a rapid shutdown device for a photovoltaic system, which is connected between a photovoltaic power generation module and a photovoltaic inverter and comprises an input port and an output port. The rapid shutdown device further comprises: a first switch and a second switch; a third switch and a fourth switch; a controller coupled to control terminals of the first switch, the third switch, and the fourth switch, and configured to control on and off of the first switch, the third switch, and the fourth switch, so that the rapid shutdown device operates in a normal state, a bypass state or a shutdown state.

Abstract: It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter circuit, each of the input circuit electrically coupled to the inverter circuit through a positive bus and a negative bus, with a first equivalent impedance Rp between the positive bus and a protective earth point and a second equivalent impedance Rn between the negative bus and the protective earth point. The detection circuit includes: a bus voltage sampling circuit coupled to the positive bus and the negative bus for generating a first bus voltage and a second bus voltage; a protective earth voltage sampling circuit coupled to the protective earth point for generating a first protective earth voltage and a second protective earth voltage; and a controller for calculating an equivalent insulation impedance.

Abstract: This invention provides microfluidic devices with graphene films as architectural materials and methods of fabrication and use thereof in X-ray analysis.

Abstract: The invention provides a method for CSI-based fine-grained gesture recognition, wherein the method comprises the following steps: determining a start point, an end point, a velocity, a direction and/or an inflection point of at least one stroke gesture in multiple dimensions according to an eigenvalue of channel state information; dividing the strokes according to the start point, the end point, the velocity, the direction and/or the inflection point of the stroke using a machine learning method and forming a stroke sequence; building a stroke decipherment model according to frequencies of the strokes appearing in natural language rules and/or scientific language rules and/or connection rules between the strokes; and dividing and recognizing the stroke sequence as a letter sequence, a radical sequence, a numeral sequence and/or a pattern sequence conforming to the natural language rules and/or the scientific language rules using the stroke decipherment model.