Abstract: An anti-lock brake apparatus, a vehicle, an electric vehicle and an electric-assisted vehicle. The anti-lock brake apparatus is applied to a brake system, and the brake system is used to provide a brake frictional force for a wheel, the brake system includes a brake oil pipeline, and the anti-lock brake apparatus includes: a volume-adjusting part, the volume-adjusting part has a volume chamber, the volume chamber is connected into the brake oil pipeline, a volume of the volume chamber is continuously adjustable, the volume-adjusting part adjusts the volume of the volume chamber according to a state parameter of the wheel, to enable an oil pressure in the brake oil pipeline to vary, and the brake frictional force exerted on the wheel by the brake system is adjustable. The apparatus has high reliability and high brake efficiency.

Abstract: A method of decoding video data may comprise decoding data from an encoded bitstream to generate motion vectors and performing a decoder-side motion vector refinement (DMVR) process on one or more of the motion vectors. Performing the DMVR process may include determining one or more characteristics of current video block being decoded and determining a search area for the DMVR process for the current video block based on the determined one or more characteristics of the current video block.

Abstract: A method for decoding a picture comprising a virtual boundary from a coded video bitstream. The method includes determining one or more of a maximum picture width or a maximum picture height from one or more syntax elements S1 in the coded video bitstream and determining one or more of a current picture width or a current picture height from one or more syntax elements S2 in the coded video bitstream. The method also includes determining that a virtual boundary syntax element in the coded video bitstream is encoded with a bit length derived from (i) one or more of the maximum picture width or the maximum picture height or (ii) one or more of the current picture width or the current picture height.

Abstract: Method of scrambling signals, transmission point device, and user equipment using the method are provided. The method includes: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, wherein the blind detection for the UE is enabled and the signaling overhead is reduced.

Abstract: Disclosed in the embodiments of the present application are a method for transmitting a signal, a network device, and a terminal device, said method comprising: a network device sending, to a terminal device, a mapping relationship between at least one sounding reference signal (SRS) resource and/or at least one SRS resource group and a downlink reference signal. The method, the network device, and the terminal device of the embodiments of the present application are beneficial to improving the transmission performance of the system.

Abstract: The invention discloses a device for testing strength and sealing performance of cement sheath after perforation, comprising a cement sheath curing maintenance simulation component, a perforation operation simulation component, and a cement sheath performance test component.

Abstract: A method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.

Abstract: An information transmission method, a device, and a computer readable medium are provided. The method comprises: receiving a paging message corresponding to the UE according to information associated with the UE; wherein the information comprises at least one of: a Paging-Radio Network Temporary Identity (P-RNTI) corresponding to the UE, a Control Resource SET (CORESET) corresponding to the UE and a search space corresponding to the UE; wherein receiving the paging message corresponding to the UE according to the information associated with the UE comprises: at a Paging Occasion (PO) of the UE, detecting Downlink Control Information (DCI) sent by a network device based on the information associated with the UE and receiving the DCI; receiving a Physical Downlink Shared Channel (PDSCH) according to the DCI; and acquiring the paging message from the PDSCH.

Abstract: Disclosed is a method of path optimization for an unmanned aerial vehicle (UAV). In the method, users and the positions of the users are obtained; the users are divided into K wireless multicast user groups; K initial hovering positions corresponding to the K wireless multicast user groups are determined; and a first shortest flying path connecting the K initial hovering positions is determined; and the initial hovering positions of the UAV are optimized to obtain K final hovering positions and a final flying path. The present disclosure also discloses a device of path optimization for a UAV and a computer readable storage medium.

Abstract: Embodiments of this application disclose power control method, a terminal device, and a network device. The method includes: sending, by a network device, second information to a terminal device. The second information is used for the terminal device to determine a first downlink reference signal (DL RS) resource group corresponding to a first BWP according to a mapping relationship indicated by the second information, the second information indicates a mapping relationship between a BWP and a DL RS resource group. In the mapping relationship, one DL RS is configured for each BWP, a signal corresponding to a DL RS resource in the first DL RS resource group is used to determine a path loss value used by the terminal device to determine a transmit power for transmitting uplink data to be transmitted, and the first DL RS resource group comprises at least one DL RS resource.

Abstract: An optical detection device includes a photocurrent input terminal; a first branch connected to the photocurrent input terminal includes a plural of MOS transistors; a second branch connected to the photocurrent input terminal includes a plural of MOS transistors. The MOS transistors in the first branch and the MOS transistors in the second branch are arranged in a mirror image manner; a control module connected to the first branch and the second branch to turn on or off the MOS transistors in the second branch; a first auxiliary current input terminal connected to the first branch and a second auxiliary current input terminal connected to the first branch, which are used to compensate the current of the MOS transistors in the first branch; a first current output terminal connected to the first branch and the second branch.

Abstract: The embodiments of the present disclosure disclose an evaluation apparatus and a method for seal integrity of a wellbore in a full life cycle. The apparatus may include an oil pipe temperature and pressure simulation assembly, an oil casing annular temperature and pressure simulation assembly, a formation confining pressure simulation assembly, a casing-cement sheath-formation combination preparation assembly, a blowby characteristic detection assembly, and a monitoring system. The present disclosure may crustal stress quickly complete scanning of cement slurry system and maintenance and preparation of casing-cement sheath-formation combination, intelligent monitor blowby pressure of cement sheath in real time, test the critical blowby pressure curve of cement sheath of oil and gas wells under various production conditions throughout the life cycle for evaluating the seal integrity of wellbore, and provide technical support for the formulation of wellbore safeguard measures.

Abstract: An asymmetric deblocking method for deblocking a boundary between a P block and a Q block such that 5 samples within the P block and 7 or 3 samples within the Q block are modified. The method includes determining a value refP based on at least p5, determining a value refQ based on at least qx, wherein qx is q3 or q7; determining a value refMiddle based on at least p0 and q0, wherein p0 is directly adjacent to the boundary and q0 is directly adjacent to the boundary; performing a linear interpolation between refP and refMiddle; and performing a linear interpolation between refQ and refMiddle.

Abstract: A pixel circuit, a display substrate, a display device and a driving method are provided. The pixel circuit includes a data writing sub-circuit and a driving sub-circuit, and the data writing sub-circuit is connected to a scan signal terminal, a control signal terminal, a data signal terminal and a drive sub circuit. The data writing sub-circuit is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal. The driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal.

Abstract: A methods and apparatuses for encoding or decoding a segment in a coded picture. The decoding may include obtaining from a bitstream a value of a first codeword that indicates whether the coded picture may contain bi-directional inter coded segments or not. The decoding may include, based on the value of the first codeword, deriving one or more parameter values by either (a) decoding one or more parameters from the bitstream to obtain the one or more parameter values or (b) inferring the one or more parameter values. The decoding may include decoding the segment in the coded picture based on the one or more parameter values. The encoding may include encoding the first codeword to the bitstream and determining whether to encode one or more parameter values in the bitstream based on a determination of whether the coded picture will contain bi-directional inter coded segments or not.

Abstract: A wireless communication method and a device are provided. The method includes: obtaining, by a terminal device, sidelink configuration information for a sidelink licensed carrier and a sidelink unlicensed carrier; and transmitting and/or receiving, by the terminal device, sidelink data on the sidelink licensed carrier and the sidelink unlicensed carrier according to the sidelink configuration information. By obtaining the sidelink configuration information for the sidelink licensed carrier and the sidelink unlicensed carrier, the sidelink licensed carrier and the sidelink unlicensed carrier can be managed coordinately. That is, with the sidelink licensed carrier, the access delay of the unlicensed carrier and the reliability of data transmission on the sidelink unlicensed carrier become controllable, thereby reducing the access delay and improving the reliability of data transmission. Accordingly, the QoS requirement of the service data can be met.

Abstract: Provided are a switching method, a base station and a terminal. The method includes that: a base station configures a switching message for a narrow-bandwidth receiving mode, the switching message including time when a terminal is indicated to enter the narrow-bandwidth receiving mode and a position of a narrow bandwidth on a frequency band when the narrow-bandwidth receiving mode is entered; and the switching message is sent to the terminal to indicate the terminal to switch to the narrow bandwidth specified in the switching message for information reception, the narrow bandwidth being smaller than a system bandwidth. With adoption of the embodiments, the terminal may receive a signal on the narrow bandwidth, and reduction in power consumption of the terminal is facilitated.

Abstract: A driving method and a driving device for a display panel and a display device are provided. The display panel includes data line groups and multiplexers, each data line group includes at least three data lines, each multiplexer successively couples the input terminal thereof to the data lines electrically in the data line group in each line scanning period; and for at least one data line group, the driving method includes: acquiring data voltages to be output to the data lines in the data line group in a current line scanning period; in response to that the data voltages are not completely equal to each other, successively outputting the data voltages to the input terminal of the multiplexer corresponding to the data line group and controlling the multiplexer to electrically couple the input terminal thereof to the data line to receive the data voltages.

Abstract: The present disclosure provides an experimental device for simulating the erosion of a tubing string caused by sand production. The experimental device includes an autoclave, a circulating assembly, a power assembly, a monitoring assembly, or a three-phase feeding assembly. The circulating assembly is sealed and arranged in the autoclave, the circulating assembly includes a circulation loop formed by straight pipes and elbows. The power assembly includes a pump arranged on the circulation loop. The monitoring assembly includes a flowmeter and a temperature and pressure sensor for detecting the circulation loop, and the temperature and pressure sensor is communicatively connected with a PC. The three-phase feeding assembly includes a feeding pipe that is in fluid communication with the circulation loop, and the feeding pipe is connected with one or more gas tanks, a sander feeder, and one or more liquid tanks, respectively.

Abstract: The present invention discloses a preparation method for the plant-based nano corrosion inhibition bactericide for oilfield, comprising the following steps: Step 1. Prepare the aloin liquid; Step 2. Stir the carbon nanotube, hydroxyethyl methacrylate and acrylic acid to react for 4 h at a constant temperature of 80° C. to get the carbon nanotube after fiber treatment, namely the modified carbon nanotube; Step 3. Mix the aloin liquid with imidazoline-ammonium-salt, add acetonitrile, and then add modified carbon nanotube, increase the temperature to 95° C. stir and react for 12 hours, and filter after naturally cooling down to room temperature and get the carbon nanotube loaded with bactericide; Step 4. Stir the carbon nanotube loaded with bactericide, diphenylmethane diisocyanate and polycaprolactone to react for 6 hours at a constant temperature of 95° C. and in the reaction process, continuously inject helium to get the target bactericide.