Abstract: A method for improving the uniformity of connection performance of an assembly surface based on zoned hardening is provided. Through a finite element contact analysis of the assembly surface, a topology optimization of the hardening layer layout of the assembly surface is carried out with the aim of improving the uniformity of the connection performance of the assembly surface. The design is based on the optimized theoretical data, and uses the laser hardening technology to realize the zoned differential hardening of the assembly surface. By performing the zoned differential hardening on the assembly surface, the uniformity of the connection performance of the assembly surface can be effectively improved, and the purpose of improving the high cycle fatigue and the vibration of the high-end equipment parts such as aero-engines can be further achieved.

Abstract: A microstrip antenna which includes a substrate, a microstrip patch configured on a first side of the substrate, a ground configured on a second side of the substrate which is opposite to the first side, and a first shorting wall extending from a side of the microstrip patch toward the ground. The first shorting wall substantially overlaps with the substrate on a direction that is perpendicular to the microstrip patch. The first shorting wall is located at a first non-radiating edge of the microstrip antenna. Dummy elements are no longer needed in this design, which makes it compact.

Abstract: The present application discloses a dispatching and control cloud data processing method, device and system. The method includes the following operations: pilot node device acquires a global scheduling task, decomposes the global scheduling task to obtain scheduling tasks, issues the scheduling tasks to collaborative node device, acquires data collection ranges and data processing rules of the collaborative node devices, and delivers them to the collaborative node devices; the collaborative node devices receive and execute the scheduling tasks issued by the pilot node device; receives the data collection ranges and the data processing rules issued by the pilot node device, acquires, based on the scheduling tasks, collected data in the data collection ranges, processes the acquired collected data according to the data processing rules to obtain the processed data, uploads the processed data to the pilot node device; the pilot node device receives the processed data uploaded by the collaborative node devices.

Abstract: A microstrip antenna which includes a substrate, a ground on a second side of the substrate, a first patch on a first side of the substrate, and a second patch on the first side of the substrate. The first patch is connected to a first port. The second patch is separated from the first patch and connected to a second port. Each of the first and second patches is further formed with a plurality of shorting vias connected to the ground. The radiation patterns of each element also feature the RPD characteristic, which is promising for large-scale MIMO or array antennas.

Abstract: A system and method for determining an error vector magnitude (EVM) of a polarized transmission from a device-under-test (DUT). A first signal transmitted by the DUT is received via a horizontally polarized receiver antenna, and a second signal transmitted by the DUT is received via a vertically polarized receiver antenna. The second signal is coherent with the first signal. The EVM is calculated based at least in part on the first signal and the second signal and a reference signal.

Abstract: A microstrip antenna which includes a substrate, a ground on a second side of the substrate, a first patch on a first side of the substrate, and a second patch on the first side of the substrate. The first patch is connected to a first port. The second patch is separated from the first patch and connected to a second port. Each of the first and second patches is further formed with a plurality of shorting vias connected to the ground. The radiation patterns of each element also feature the RPD characteristic, which is promising for large-scale MIMO or array antennas.

Abstract: A continuous-time bandpass Sigma-Delta modulator includes a transconductance operational amplifier, a passive resonator, a sampling quantizer, a current feedback module, and a voltage feedback module. The transconductance operational amplifier receives an input voltage signal and convert it to output a current signal. The passive resonator is connected to an output end of the transconductance operational amplifier as a loop filter and converts the current signal to output an intermediate voltage signal. The sampling quantizer is connected to an output end of the passive resonator and samples and quantizes the intermediate voltage signal to output a thermometer code. The current feedback module and the voltage feedback module both are connected to the sampling quantizer and the passive resonator, and respectively provide a feedback current and a feedback voltage for the passive resonator under control of the thermometer code.

Abstract: The disclosure discloses a convexity adjusting mechanism for a working roll of a straightening machine and relates to the field of plate straightening devices. The convexity adjusting mechanism for the working roll of the straightening machine comprises a transmission shaft, a plurality of convexity adjusters, working rolls and supporting rolls corresponding to each convexity adjuster. The transmission shaft, the supporting rolls and the working rolls are axially parallel; the convexity adjust comprises a sleeve, a cam and a controller; the cam is provided with a through hole, the sleeve is mounted in the through hole, and the cam is sleeved on the transmission shaft through the sleeve; the sleeve is connected with the controller, and one end of the sleeve is provided with a gripping clawt.

Abstract: Disclosed in the present application are a power grid real-time scheduling optimization method and system, a computer device and a storage medium. The method comprises: acquiring power grid model parameters and power grid operation data; and according to the power grid model parameters and the power grid operation data, obtaining a power grid real-time scheduling adjustment strategy by means of a preset power grid real-time scheduling reinforcement learning training model. Massive operation data of a power grid and load flow calculation simulation technologies can be fused by means of reinforcement learning, and unlike a conventional algorithm, a complex and difficult-to-solve calculation model does not need to be established, so that rapid optimization adjustment of power grid real-time scheduling is achieved, the optimization adjustment cost is reduced, and the matching degree of power grid real-time scheduling and actual operation is improved.

Abstract: The invention relates to a system for a user-side energy storage sharing framework. A power energy scheduling optimization method comprises: establishing a user load model, an energy storage battery model and a user-to-user capacity sharing model; with a minimum electricity cost of a whole community as an objective optimization function, resolving optimal scheduling based on the function using a MILP algorithm as an optimization technique for power energy scheduling of a user-side energy storage sharing framework; and performing power energy scheduling for users according to a resolved result.

Abstract: An electronic device includes a display screen, a camera, and a first display buffer. The display screen includes a first display area and a second display area, and a material of a display screen corresponding to the second display area is a transparent material. The camera is disposed below the display screen and opposite to a second display area. The first display buffer is configured to store a display signal of the first display area and a display signal of the second display area, and send the display signal of the first display area to the first display area. The first display buffer is further configured to determine, based on whether the camera is started, whether to send the display signal of the second display area to the second display area.

Abstract: Provided are a digital twinning method and system for a scene flow based on a dynamic trajectory flow, which belong to the field of traffic control. The method includes: extracting and identifying a target semantic trajectory with a detecting and tracking integrated multi-modal fusion and perception enhancement network; extracting road traffic semantics, so as to obtain a highly parameterized virtual road layout top view; obtaining a road layout traffic semantic grid encoding vector based on the virtual road layout top view; constructing a target coupling relation model; constructing a traffic force constraint model; constructing a long short term memory trajectory prediction network; predicting a motion trajectory of a target with the long short term memory trajectory prediction network, so as to obtain the predicted motion trajectory; and obtaining a digital twin of the scene flow based on trajectory extraction, semantic identification and the predicted motion trajectory.

Abstract: A 3D target detection method based on multimodal fusion and a depth attention mechanism includes the following steps: obtaining and preprocessing original point cloud data and original image data; inputting the preprocessed point cloud data and image data into a 3D target detection network based on multimodal fusion and the depth attention mechanism, where the 3D target detection network based on multimodal fusion and the depth attention mechanism includes a generation phase for 3D bounding box proposals and a refinement phase for 3D bounding boxes, and the network outputs parameters and classification confidence of a target bounding box; training the 3D target detection network based on multimodal fusion and the depth attention mechanism; and processing the collected lidar point cloud data and image data by using the trained detection network, and outputting 3D target information, to realize 3D target detection.

Abstract: A flow cell working electrode is provided. The electrode may include a substrate. The electrode may include a conductive electrode layer contacting the substrate. The electrode may include an electrically resistive layer contacting the conductive electrode layer such that the conductive electrode layer is positioned between the substrate and the electrically resistive layer, the electrically resistive layer having an electrically resistive thickness tailored to reduce electrical conductivity across the electrically resistive layer but to allow an electric field associated with a voltage applied to the conductive electrode layer to be felt across the electrically resistive layer. The electrode may include a macroscopically non-conductive plasmonic metal layer contacting the electrically resistive layer such that the electrically resistive layer is positioned between the conductive electrode layer and the macroscopically non-conductive plasmonic metal layer.

Abstract: An antenna includes a radiator arrangement and a feed mechanism operably coupled with the radiator arrangement for affecting operation of the radiator arrangement. The feed mechanism is configured to selectively operate in at least three different states. When the feed mechanism operates in a first state, the antenna operates in a first mode to provide a broadside radiation pattern. When the feed mechanism operates in a second state, the antenna operates in a second mode to provide an omnidirectional radiation pattern. When the feed mechanism operates in a third state, the antenna operates in a third mode to provide a unilateral radiation pattern.

Abstract: A system and method for determining an error vector magnitude (EVM) of a polarized transmission from a device-under-test (DUT). A first signal transmitted by the DUT is received via a horizontally polarized receiver antenna, and a second signal transmitted by the DUT is received via a vertically polarized receiver antenna. The second signal is coherent with the first signal. The EVM is calculated based at least in part on the first signal and the second signal and a reference signal.

Abstract: The present application discloses a dispatching and control cloud data processing method, device and system. The method includes the following operations: pilot node device acquires a global scheduling task, decomposes the global scheduling task to obtain scheduling tasks, issues the scheduling tasks to collaborative node device, acquires data collection ranges and data processing rules of the collaborative node devices, and delivers them to the collaborative node devices; the collaborative node devices receive and execute the scheduling tasks issued by the pilot node device; receives the data collection ranges and the data processing rules issued by the pilot node device, acquires, based on the scheduling tasks, collected data in the data collection ranges, processes the acquired collected data according to the data processing rules to obtain the processed data, uploads the processed data to the pilot node device; the pilot node device receives the processed data uploaded by the collaborative node devices.

Abstract: A method for offshore dual-drive core drilling with three layers of casings under surge compensation is provided. According to the method, a drilling vessel is located at set latitude and longitude coordinates by a dynamic positioning system; drill pipes are stabilized by a seabed template; torques and drilling pressures can be transmitted during drilling of the casings by means of surge compensation of the casings at a wellhead; during drilling for sampling, the surge compensation can compensate to a certain extent for a change in water depth caused by rising or falling tides, or surge, thereby preventing the casings from colliding with equipment and ensuring the safety of wellhead operation; and the drilling of three layers of casings is achieved by means of dual driver heads to effectively protect a wellbore wall, such that high core-drilling rate and good core-drilling quality are achieved during drilling for sampling.

Abstract: An antenna includes a radiator arrangement and a feed mechanism operably coupled with the radiator arrangement for affecting operation of the radiator arrangement. The feed mechanism is configured to selectively operate in at least three different states. When the feed mechanism operates in a first state, the antenna operates in a first mode to provide a broadside radiation pattern. When the feed mechanism operates in a second state, the antenna operates in a second mode to provide an omnidirectional radiation pattern. When the feed mechanism operates in a third state, the antenna operates in a third mode to provide a unilateral radiation pattern.

Abstract: A method for offshore dual-drive core drilling with three layers of casings under surge compensation is provided. According to the method, a drilling vessel is located at set latitude and longitude coordinates by a dynamic positioning system; drill pipes are stabilized by a seabed template; torques and drilling pressures can be transmitted during drilling of the casings by means of surge compensation of the casings at a wellhead; during drilling for sampling, the surge compensation can compensate to a certain extent for a change in water depth caused by rising or falling tides, or surge, thereby preventing the casings from colliding with equipment and ensuring the safety of wellhead operation; and the drilling of three layers of casings is achieved by means of dual driver heads to effectively protect a wellbore wall, such that high core-drilling rate and good core-drilling quality are achieved during drilling for sampling.