Abstract: The present disclosure relates to the field of frequency control technologies of power grid systems and in particular to a platform and method for power grid frequency regulation with participation of large-scale energy storage based on MADDPG. Firstly, based on a scene of power grid frequency regulation with participation of large-scale energy storage, a control platform architecture for power grid frequency regulation with participation of large-scale energy storage based on MADDPG is designed. Then, based on the multiple agents deep deterministic policy gradient algorithm, under the drive of environmental interaction data, training and learning are performed to obtain optimal control multiple agents for power grid frequency regulation with participation of energy storage. Finally, by using the optimal control multiple agents, control on the output power of the thermal power unit and the charge and discharge of the large-scale energy storage is performed for participation of power grid frequency regulation.

Abstract: A touch detection circuit, a touch sensing chip and an electronic device are disclosed. The touch detection circuit includes: a charge/discharge circuit, a 1st-order N-bit ??ADC comprising an adder, an integrator, an N-bit ADC and an N-bit DAC, the adder comprising two input terminals coupled respectively to an output terminal of the charge/discharge circuit and an output terminal of the N-bit DAC, the N-bit DAC comprising an input terminal coupled to an output terminal of the N-bit ADC, wherein the integrator is configured to integrate net incoming charge that the integrator receives; the N-bit ADC is configured to quantize an output of the integrator into an N-bit digital signal; the N-bit DAC is configured to provide subtractive reference charge according to the instruction of the N-bit digital signal; and the adder is configured to derive the net incoming charge by subtracting the subtractive reference charge from the sense charge.

Abstract: This application provides a test apparatus and a battery production line. The test apparatus includes a fixing mechanism and a plurality of test probe mechanisms. The test probe mechanisms are slidably connected to the fixing mechanism side by side along a first direction. In the test apparatus provided in embodiments of this application, the fixing mechanism is provided with a plurality of test probe mechanisms, and the test probe mechanisms can slide along the first direction relative to the fixing mechanism. In this way, distances between the test probe mechanisms can be adaptively adjusted according to the dimensions of to-be-tested battery cells, that is, the distances can quickly respond and adapt to changes in dimensions of incoming battery cells, so that the test efficiency can be significantly improved.

Abstract: A server system, a configuration method, a CPU, a control module, and a non-volatile readable storage medium are provided. The server system includes: a plurality of CPUs, each CPU being provided with at least one bus interface; at least one data transmission bus, each CPU being connected to at least one data transmission bus through a corresponding bus interface; a plurality of extended memories; and a compute express link switch (CXL Switch), the CXL Switch being connected to each CPU through a first-type interface and connected to each of the plurality of extended memories through a second-type interface; and the CXL Switch is configured to connect a data path between a target extended memory and a target CPU under an indication of a connection signal, so as to allocate the target extended memory to the target CPU.

Abstract: The disclosure provides a separation device for steel cord cores of the conveyor belt, relates to conveyor belt steel cord core separation technology and solves the problems of high labor intensity and long time consumption when separating steel cord cores of a conveyor belt joint. The separation device comprises a mount, cutting mechanism and a conveying mechanism. The cutting mechanism is connected to the mount and is provided with knives, configured to separate steel cord cores of a joint site of a conveyor belt and arranged along the width direction of the conveyor belt. The dimension of the knife along the width direction of the conveyor belt is greater than or equal to the width of the conveyor belt. The conveying mechanism is fixedly connected to the mount and configured to move the conveyor belt joint site along the knife. The separation device is configured to separate steel cord cores of a conveyor belt joint site.

Abstract: The present application discloses a display panel. A thickening layer includes a first portion. An orthographic projection of a first backplate on a plane of a bonding substrate is a first projection. An orthographic projection of a circuit board on the plane of the bonding substrate is a second projection. A terminal portion includes a first region and a second region. The first region is an overlapping region of the first projection and the second projection. The first portion is disposed in the second region and extends from a junction of the first region and the second region to a side away from the first region.

Abstract: The utility model discloses a small-sized connector convenient for dismounting and mounting, the connector being inserted and received in a female socket of a PCB board, comprising: a connector housing inserted and received in the female socket; two elastic clamping plates, wherein the two elastic clamping plates are symmetrically mounted on both sides of the connector housing, first ends of the two elastic clamping plates are each provided with a clamping hole, and the female socket is provided with a clamping boss clamped with the clamping hole; and a pull strap, wherein both ends of the pull strap are respectively connected to second ends of the two elastic clamping plates, and the pull strap is used to pull the second ends of the two elastic clamping plates to separate the clamping holes at the first ends of the two elastic clamping plates from the clamping bosses of the female socket.

Abstract: The present utility model discloses a connector for preventing signal interference, comprising a plurality of groups of wires and spacers for separating two adjacent groups of the wires, wherein the wires comprise signal wires and ground wires, the ground wires are connected on both sides of the signal wires, and a wire shielding layer is sleeved between the signal wires and the ground wires; a wire clamp is mounted on the spacer, a plurality of bosses are arranged on the spacer, the wire clamp is provided with a plurality of staggered holes matched with the bosses and signal wire holes matched with the signal wires; and the wire clamp and the bosses are snap-fitted via the staggered holes, and the wire shielding layer is connected to the signal wire holes.

Abstract: Embodiments of the present disclosure provide methods and systems for processing a medical image. The method may include obtaining a first image; determining a second image by optimizing the first image; and obtaining a third image by inputting the second image and K-space dataset determined based on the second image into a fidelity model, wherein the fidelity model includes a trained machine learning model.

Abstract: A reflective waveguide includes a substrate and a plurality of semi-transparent louver mirrors disposed within the substrate. The reflective waveguide further includes a coating disposed on at least a portion of the substrate and aligned with one or more regions of the substrate without the semi-transparent louver mirrors. The coating has a light transmission characteristic matching a light transmission characteristic of the semi-transparent louver mirrors so as to reduce contrast between one or more regions of the substrate containing the semi-transparent louver mirrors and the one or more regions of the substrate without the semi-transparent louver mirrors. The coating can be disposed at one or more regions of at least one external surface of the substrate. Alternatively, the substrate can include a first workpiece joined with a second workpiece, and the coating is disposed at one or more regions of an interface between the first workpiece and the second workpiece.

Abstract: A communication apparatus, a communication method, an electronic device, and a storage medium are provided. The communication apparatus includes: an antenna module including N antenna units for transmitting and receiving electromagnetic signals; a signal comparison module coupled to the antenna module, and configured to: detect received signal strengths of respective antenna units among the N antenna units, and select M target antenna units with top M strongest received signal strengths from the N antenna units based on the received signal strengths of the respective antenna units among the N antenna units; and a signal switching module coupled to the signal comparison module and the antenna module, respectively, and configured to: receive information output by the signal comparison module for indicating the M target antenna units, and select the M target antenna units to transmit an electromagnetic signal based on the information for indicating the M target antenna units.

Abstract: Systems, devices, and techniques for performing wavelength division multiplexing or demultiplexing using one or more metamaterials in an optical communications systems are described. An optical device may be configured to shift one or more phase profiles of an optical signal using one or more stages of metamaterials to multiplex or demultiplex wavelengths of optical signals. The optical device may be an example of a stacked design with two or more stages of metamaterials stacked on top of one another. The optical device may be an example of a folded design that reflects optical signals between different stages of metamaterials.

Abstract: This application provides a module tray and a battery production device. The module tray includes: a tray body; a reference member mounted on the tray body and configured for supporting and positioning a battery module in a first direction; a sliding member slidably mounted on the tray body along the first direction and configured to clamp the battery module in cooperation with the reference member; and an adjustment mechanism connected to the sliding member, where the adjustment mechanism is configured to drive the sliding member to move along the first direction and lock a position of the sliding member, and the adjustment mechanism is mounted on the tray body.

Abstract: A method for manufacturing polyurethane using raw materials consisting of polyol, isocyanate, water, and other additives, characterized in that, replacing the amount of water partially among the above raw materials and adding aldehyde compounds as a new additive when manufacturing polyurethane foam. A sequential use of blowing agents is employed by reducing the amount of water used as a blowing agent in the manufacturing process of polyurethane foam, and instead, employing aldehyde compounds and/or Diels-Alder reaction products of aldehyde compounds as initial raw materials.

Abstract: The present disclosure discloses a data read and write method.

Abstract: A non-horizontal folding mask is provided. A breathable region of a mask body is provided with at least one non-horizontally extended folding portion; and the folding portion is a folding and breathing filtration layer. During use, unfolding the folding portion can increase an area of the breathable region of the mask body to improve the filtering effect, and can accommodate and buffer more exhaled gas to effectively prevent escape of the gas from an upper end of a nose and a chin to further improve the filtering effect. The non-horizontally extended folding portion can support a breathing chamber formed by unfolding the mask body overall, preventing collapse and expansion of the breathing chamber in the breathing process to avoid gas leakage.

Abstract: Disclosed herein are articles with scattering regions configured to provide relatively low sparkle with minimal color artifacts. The scattering regions can be a portion of a surface of the article comprising a plurality of first regions disposed at a first height and a plurality of second regions disposed at a second height. The scattering regions are designed in the Fourier domain and constructed such that the article exhibits a radial power spectral density comprising a first range of scattering angles in which the radial PSD increases with an increase in a scattering angle of light relative to a specular direction, a peak angle ?peak where the radial PSD comprises a peak value, and a second range of scattering angles at angles greater than ?peak in which the radial PSD rapidly decreases with increasing scattering angle.

Abstract: The embodiments of the present application relate to the technical field of wireless communications. Provided are a channel information feedback method, and an electronic device and a computer-readable medium. The channel information feedback method comprises: performing channel estimation according to a first pilot signal sent by a first communication node, so as to acquire first channel information; according to the first channel information, determining a codebook set for quantized channel feedback; selecting an optimal codeword from the codebook set, wherein the optimal codeword is used for quantitatively characterizing the first channel information; and feeding back target instruction information to the first communication node, wherein the target instruction information is used for instructing the first communication node to determine the optimal codeword, and codewords in the codebook set conform to a corresponding model.

Abstract: A high-conductivity sulfur-based positive electrode material for a secondary battery and a secondary battery are provided. The sulfur-based positive electrode material is formed by evenly mixing highly isotactic polyacrylonitrile as a precursor with elemental sulfur and then heating to undergo a chemical reaction. The highly isotactic polyacrylonitrile is synthesized from an acrylonitrile monomer by means of a free radical polymerization or inclusion polymerization reaction under the action of a template agent.