Abstract: The disclosure provides a method for monitoring a short-term voltage stability of a power system. The method includes: obtaining a topology and time series of a current power system; inputting the topology and the time series of the current power system into a trained spatial-temporal graph network model, the trained spatial-temporal graph network model being obtained by classification learning on a spatial-temporal graph network model based on a simulation sample dataset; outputting a status of the short-term voltage stability of the power system; and sending an alarm signal in response to outputting an unstable status of the short-term voltage stability of the power system.

Abstract: A skin layer of a superconducting tape has a woven mesh structure and is disposed on a surface of a superconducting tape. The skin layer of a superconducting tape solves the problem where a vapor layer generated when a superconductor is in a normal resistive state greatly reduces the efficiency of a heat exchange between the superconductor and liquid nitrogen. Further provided are the superconducting tape and a superconducting coil.

Abstract: The present disclosure discloses a method for automatically identifying south troughs by improved Laplace and relates to the technical field of meteorology. The method includes the following steps: acquiring grid data of a geopotential height field; calculating a gradient field of the geopotential height field in an x direction; searching for a turning point where a gradient value turned from being negative to being positive, and cleaning the gradient field; calculating a divergence of the x direction to obtain an improved Laplacian numerical value L?; performing 0,1 binarization processing on the L? to obtain a black-and-white image and a plurality of targets of potential troughs, merging the black-and-white image and the plurality of targets of the potential troughs by expansion, recovering original scale through erosion, and selecting an effective target through an angle of direction of a contour and an axial ratio.

Abstract: A distributed display method provides different parts of an application interface that are collaboratively displayed on a plurality of terminals, so that manners for collaborative display between the plurality of terminals are more flexible and richer. A first terminal displays a first interface including a first part and a second part. When the first terminal detects that a preset condition is met, the first terminal displays a second interface, where the second interface includes the first part and does not include the second part; and the first terminal notifies a second terminal to display a third interface, where the third interface includes the second part and does not include the first part.

Abstract: An atomization device and a method of predicting atomization time for the same are provided. The atomization device includes a control module, an atomization module and a breathing sensing module. The method includes: configuring the breath sensing module to detect inhalations of a user using the atomization device, so as to generate initial breath data correspondingly; and configuring the control module to perform: comparing inhalation data of the initial breath data with a valid inhalation standard to obtain valid inhalation data and filter noise; statistically analyzing the valid inhalation data to generate a predicted value of inhalation time; calculating an atomization time according to the predicted value of the inhalation time; and generating a driving signal to drive the atomization module to perform atomization according to the atomization time.

Abstract: A self-excited wet gas flow measuring device, including a housing (1), the housing (1) is provided with a wet gas inlet (21), a dry gas outlet (23) and a liquid outlet (25); the middle of the housing (1) is mounted with a mist catching filter screen to divide a hollow cavity inside the housing (1) into a dry gas region (33) and a wet gas region (34); the wet gas inlet (21) and the liquid outlet (25) are both disposed in the wet gas region (34), and the dry gas outlet (23) is disposed in the dry gas region (33); a gas flowmeter (41) for metering the transmitted dry gas is provided at the dry gas outlet (23), a control device (51) is provided within the wet gas region (34), and a detection counting device (52) is provided at the liquid outlet (25).

Abstract: The present invention relates to a Si-containing high-strength and low-modulus medical titanium alloy, and an additive manufacturing method and use thereof. The additive manufacturing method comprises alloy ingredient design, powder preparation, model construction and substrate preheating, and additive manufacturing molding; wherein the Si-containing high-strength and low-modulus medical titanium alloy is designed in the ingredient proportion of Ti 60-70 at. %, Nb 16-24 at. %, Zr 4-14 at. %, Ta 1-8 at. %, Si 0.1-5 at. %.

Abstract: An in-game virtual object control method including: providing, by a first terminal, a virtual object residence area on a graphical user interface of the first terminal, where a plurality of virtual objects to be selected are displayed in the virtual object resident area according to a trigger instruction; in response to a selection instruction for the plurality of virtual objects to be selected, selecting a target number of target virtual objects from the plurality of virtual objects to be selected, and adding the target number of target virtual objects into a virtual city; generating a demand task associated with at least one unselected virtual object to be selected, and displaying, on the graphical user interface, task information corresponding to the demand task; and completing the demand task, increasing the a preset duration for the virtual object to be selected to leave the virtual object residence area corresponding to the demand task.

Abstract: A method for detecting abnormal direct current voltage measurement in a modular multilevel converter high voltage direct current transmission system is provided. In the method, a valve group voltage at a detection pole is obtained, voltages at voltage measurement points at the detection pole are collected, and comparison and determination are performed based on the actual arrangement of the voltage measurement points, and then whether an abnormal measurement occurs at each of the voltage measurement points is determined.

Abstract: A double-deck rail vehicle and a vehicle body thereof are provided. An underframe (11) of the vehicle body comprises a lower-layer underframe (111), end underframes (112, 115), sealing plates (114, 116), and side underframes (118, 119); wherein the lower-layer underframe is provided with an underframe middle beam (1111); the end underframe is fixedly connected to the underframe middle beam by means of reinforcement middle beams (113, 117); the sealing plate is fixedly connected between the end underframe and the lower-layer underframe; and the side underframe comprises side beams (1181, 1191) of the side underframe that are integrated, and the side underframe is fixedly connected to the end underframe by means of the side beams of the side underframe. The vehicle body supplements the reinforcement middle beams capable of increasing the connection strength between the end underframe and the lower-layer underframe, and uses the integrated side beams of the side underframe.

Abstract: A device for detecting a slot wedge, an air gap and a broken rotor bar is provided, where a sequential circuit generates double concurrent pulses; the sequential circuit is connected to driving power modules; the driving power modules are connected to front-end interface circuits; the front-end interface circuits convert the double concurrent pulses into corresponding magnetic-field pulses; the magnetic-field pulses are transmitted to power supply terminals on adjacent phases of stator windings through impedance matching pins and coupled at a corresponding coil, air gap and squirrel cage rotor to generate single groups of cyclic rotating magnetic potentials; single rotating magnetic potentials are sequentially generated in adjacent slots on each of the phases of the stator windings; rotating electric potentials in magnetic circuits with two symmetrical phases are magnetically coupled to form distributed coupling magnetic field reflected full-cycle waves for reflecting a difference of a corresponding slot wedg

Abstract: A display panel and a fabricating method thereof, and a displaying device. The display panel includes a substrate, a resistance reducing trace, an inter-layer-medium layer and a signal line. The substrate is divided into a plurality of sub-pixel regions and a pixel separating region. The resistance reducing trace is provided on the pixel separating region of the substrate. The inter-layer-medium layer is provided on the substrate, and the inter-layer-medium layer has an opening exposing the resistance reducing trace. The signal line is provided within the opening, the signal line is connected to the resistance reducing trace, the signal line is distributed in a column direction along the display panel, and in a row direction along the display panel, a width of the opening is greater than or equal to a width of the signal line.

Abstract: Provided in the present invention are a method performed by user equipment and user equipment. The method performed by user equipment includes: receiving a coordination request in a first resource pool, determining a coordination resource set in a second resource pool, and transmitting, in a third resource pool, a coordination message as a response to the coordination request, wherein the coordination message includes an indication for the coordination resource set, and the first resource pool, the second resource pool, and the third resource pool are the same resource pool.

Abstract: A display panel, a display module and a manufacture method thereof, and a communication device are provided. The display panel includes a display substrate and a multiplexing circuit arranged on a first surface of the display substrate. The display panel further includes a wave-absorbing material layer arranged on a second surface of the display substrate. The wave-absorbing material layer is configured to absorb electromagnetic wave interference signals. The second surface is a surface opposite to the first surface.

Abstract: A device for separating and recovering flat-plate catalyst powder and a method for determining a wear ratio are provided. The device includes a powder separation unit and a powder recovery unit, a powder accumulation bin is respectively connected with a shell and a catalyst powder outlet, a cyclone outlet is configured on an inner side of a recovery shell, and a primary filter and a secondary filter are configured on an inner side wall of the recovery shell.

Abstract: A method for continuously preparing nano zinc oxide using carbon dioxide. The method includes: step 1, determining experimental materials and experimental instruments; step 2, preparing a raw material and processing the raw material; step 3, oxidizing the preprocessed emulsified zinc slurry; step 4, carbonizing the zinc-free emulsified zinc slurry; step 5, filtering and washing; and step 6, drying and calcining By using carbon dioxide as a transformation precipitant and using the carbonization method to prepare industrial by-products such as zinc slurry into alkaline zinc carbonate, the nano zinc oxide is obtained through liquid removal, impurity removal, drying, and calcination. Compared with traditional nano zinc oxide preparation methods, the method has a simple and green process flow, a wide source of raw materials, and can prepare nano zinc oxide products with different purities and particle sizes.

Abstract: In some examples, a cooling system includes a brake assembly defining a plurality of cooling channels. The brake assembly is configured to be positioned within a wheel cavity of a wheel. The cooling system includes a distributor configured to receive a flow of cooling fluid and supply the cooling fluid to the plurality of cooling channels. One or more cooling channels are configured to receive the cooling fluid and discharge the cooling fluid into the wheel cavity of the wheel. The cooling system may include a fan configured to provide the cooling fluid to the distributor.

Abstract: The present disclosure provides a method performed by user equipment, comprising: receiving a timing advance command in a slot n; and determining, according to the slot n in which the timing advance command is received and/or other information related to an uplink transmission timing adjustment, time to apply the uplink transmission timing adjustment.

Abstract: A step device includes: a mounting seat including a limiting part and configured to be mounted to a vehicle body; a step seat including an engaging part; a step mounted on the step seat; and an extension and retraction assembly connected to the mounting seat and the step seat, the extension and retraction assembly being configured to drive the step seat to move between an extended position where the engaging part is separated from the limiting part and a retracted position where the engaging part is engaged with the limiting part.

Abstract: Provided in the present invention is a method performed by user equipment (UE), the method including: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, the configuration parameter including a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET).