Abstract: A wireless repeater is in communication with a wireless communication device and a wireless access point (AP) and includes a packet transceiver circuit and a computing circuit. The computing circuit is configured to control the packet transceiver circuit to receive from the wireless communication device or the wireless access point a first frame that includes a first receiver address, a first transmitter address, a first destination address, and a first source address, and to control the packet transceiver circuit to send a second frame to the wireless AP or the wireless communication device, the second frame including a second receiver address, a second transmitter address, a second destination address, and a second source address. The first source address is identical to the second source address, the first destination address is identical to the second destination address, and the first receiver address is identical to the second transmitter address.

Abstract: The present invention relates to the field of elevator braking, in particular to an action state detection method and system for an elevator brake, comprising: acquiring matching pairs of brake linings in the same braking state; constructing normal record data sets based on the matching pairs; grouping the normal record data sets based on braking power corresponding to samples in the normal record data sets to determine a median of elevator running speed corresponding to the samples in each group; dividing the operating state levels of the elevator brake according to the size of the median; constructing a data training set; training a constructed network model to obtain a trained network model; acquiring the operating state levels of an elevator to be detected by the trained network model, evaluating the elevator brake according to the operating state levels, and controlling the elevator.

Abstract: A staged cementing device includes a cylindrical body having an inner chamber. A circulating opening and a liquid inlet recess open to the inner chamber are arranged on a wall of the body. An opening assembly is arranged in the body, which has an opening sleeve and an opening seat located in the opening sleeve. Initially the opening sleeve is connected with the body through a first shear pin and covers the circulating opening, and the opening seat is connected with the opening sleeve through a second shear pin and covers the liquid inlet recess. A packer includes a packing valve body and a packer rubber. The packing valve body includes a flow channel in communication with the liquid inlet recess, and the packer rubber includes a liquid reservoir in communication with the flow channel. The second shear pin is sheared off in response to primary cementing procedure.

Abstract: A stable dispersant and an application thereof in preparing copolymer polyols, the preparation method for the stable dispersant including the steps of 1) contacting a polyol with a dianhydride compound for reaction so as to prepare an adduct; 2) performing a ring-opening addition reaction on the adduct obtained in step 1) and an epoxy compound to prepare a stable dispersant; the dianhydride compound does not contain a double bond that may copolymerize with an olefinically unsaturated monomer, while the epoxy compound contains a double bond that may copolymerize with an olefinically unsaturated monomer, the polyol is a polyester polyol and/or a polyether polyol, preferably being a polyether polyol. The stable dispersant obtained by means of the described preparation method has a multi-active site anchoring function, and is applied to the synthesis of copolymer polyols to obtain copolymer polyols having relatively uniform particle size.

Abstract: The present invention relates to a class of TrkA inhibitors and an application thereof in the preparation of a drug for the treatment of diseases associated with TrkA. The present invention specifically discloses compounds represented by formula (I) and formula (II), tautomer thereof or pharmaceutically acceptable salts thereof.

Abstract: The present disclosure discloses a stable and high-capacity neutral aqueous redox flow lithium battery based on redox-targeting reaction and belongs to the technical field of flow lithium batteries. The present disclosure solves the technical problem that an existing flow battery can only work at low current density. The flow lithium battery of the present disclosure includes a positive electrode storage tank and a negative electrode storage tank; the positive electrode storage tank is filled with a positive electrolyte; and the negative electrode storage tank is filled with a negative electrolyte. The flow lithium battery is characterized in that the positive electrolyte includes a salt containing [Fe(CN)6]4? and/or [Fe(CN)6]3?, and the positive electrode storage tank is further filled with LFP particles and/or FP particles. The flow lithium battery of the present disclosure has wide application prospects in the field of large-scale energy storage.

Abstract: An image rendering method includes acquiring a water wave map corresponding to a target water body region, and acquiring a normal map corresponding to the target water body region in a next image frame based on the water wave map corresponding to the target water body region in the current image frame. The method further includes rendering a water wave effect on the target water body region in the next image frame based on the normal map. The method further includes performing attenuation processing on the water wave map corresponding to the target water body region where the dynamic object is located in the current image frame based on a water wave diffusion attenuation matrix corresponding to the dynamic object to obtain an attenuated water wave map when the dynamic object moves in water.

Abstract: An in-situ square sample acquisition device and method for a bond contact test of a surrounding rock and a shotcrete layer are provided, the device includes a supporting shell, a fixing structure, hollow adjusting bolts and two borehole positioning frames, a guide hole is provided in a middle of the supporting shell, the frames are slidably fit in the guide hole, a plurality of positioning holes are provided in side walls of each of the frames, and the positioning holes in different frames are distributed in a staggered manner, four corners of the supporting shell are connected with four hollow adjusting bolts respectively, one end of each of the hollow adjusting bolts is fixedly provided with an adjusting nut, four fixing lugs are provided in four corners of each frame respectively, and the fixing structure includes four connecting bolts and four nuts.

Abstract: An image rendering method includes acquiring a water wave map corresponding to a target water body region, and acquiring a normal map corresponding to the target water body region in a next image frame based on the water wave map corresponding to the target water body region in the current image frame. The method further includes rendering a water wave effect on the target water body region in the next image frame based on the normal map. The method further includes performing attenuation processing on the water wave map corresponding to the target water body region where the dynamic object is located in the current image frame based on a water wave diffusion attenuation matrix corresponding to the dynamic object to obtain an attenuated water wave map when the dynamic object moves in water.

Abstract: The present disclosure provides a display method, including: receiving a task list, the task list includes at least one display task, and the display task includes identification information of a video resource corresponding to the display task; displaying the video resource defined by a first target task according to the first target task, where the first target task is a display task, in which the identification information of the display terminal serving as a host is the same as that of a current display terminal; and sending a display trigger signal to a display terminal serving as a slave in the first target task, where the display trigger signal is for controlling the display terminal receiving the display trigger signal to display the video resource defined by the first target task. The present disclosure further provides a display control method, a display terminal, a server and a display system.

Abstract: Aspects of this disclosure provide a method where a normal map corresponding to a target water body region where a dynamic object is located in a next image frame can be acquired based on a water wave map corresponding to the target water body region where the dynamic object is located in a current image frame, and a water wave effect on the target water body region where the dynamic object is located in the next image frame is rendered according to the normal map. On the one hand, through iterative rendering frame by frame, a realistic water wave animation effect can be simulated to make the water surface interaction very natural, providing users with immersive experience. Further, because the water wave rendering is performed only on the target water body region, the complexity is lowered, and the calculation amount is reduced, to better adapt to a mobile terminal application.

Abstract: A video processing method applied to a splicing screen is provided, including: dividing each frame of an initial video into multiple sub-images; and forming sub-videos using all the sub-images, the initial video and each sub-video including M frames, M being an integer greater than 1, and durations of individual frames of the sub-videos being the same, wherein i-th frames of all sub-videos are spliced into an i-th frame of the initial video, and a relative position of the i-th frame of any sub-video in the i-th frame of the initial video is the same as a relative position of any other frame of the sub-video in a corresponding frame of the initial video, where i is a variable whose value is a natural number from 1 to M.A dividing task distribution method, a computer-readable storage medium, a scheduling server, an execution server and a video processing system are provided.

Abstract: The present disclosure provides a multi-screen video display method, a video display device, a computer apparatus, and a medium. The video display method includes: selecting in response to a first operation and a second operation of a user, a start point and an end point in a multi-screen control icon of a graphical user interface, and showing a sub-layout according to the start point and the end point, wherein the multi-screen control icon comprises multiple sub-icons, the sub-icons are objects respectively mapping sub-screens in the multi-screen display to the graphical user interface, and the sub-layout comprises all covered sub-icons from the start point to the end point; determining the sub-layout in response to a third operation of the user; and generating a video display template in response to a fourth operation of the user, and showing a video display on the graphical user interface.

Abstract: A video segmentation method and apparatus, an electronic device, and a computer-readable storage medium, related to the technical field of video processing. The method comprises: acquiring a video frame to be processed in a target-video, and information to be segmented in the video frame to be processed; determining a tilt angle corresponding to the video frame to be processed according to the information to be segmented; performing correction processing on the video frame to be processed according to the tilt angle, to obtain a corrected video frame; and performing image segmentation on the corrected video frame according to the information to be segmented, to determine an image to be played.

Abstract: An in-situ square sample acquisition device and method for a bond contact test of a surrounding rock and a shotcrete layer are provided, the device includes a supporting shell, a fixing structure, hollow adjusting bolts and two borehole positioning frames, a guide hole is provided in a middle of the supporting shell, the frames are slidably fit in the guide hole, a plurality of positioning holes are provided in side walls of each of the frames, and the positioning holes in different frames are distributed in a staggered manner, four corners of the supporting shell are connected with four hollow adjusting bolts respectively, one end of each of the hollow adjusting bolts is fixedly provided with an adjusting nut, four fixing lugs are provided in four corners of each frame respectively, and the fixing structure includes four connecting bolts and four nuts.

Abstract: The present disclosure provides a display method, including: receiving a task list, the task list includes at least one display task, and the display task includes identification information of a video resource corresponding to the display task; displaying the video resource defined by a first target task according to the first target task, where the first target task is a display task, in which the identification information of the display terminal serving as a host is the same as that of a current display terminal; and sending a display trigger signal to a display terminal serving as a slave in the first target task, where the display trigger signal is for controlling the display terminal receiving the display trigger signal to display the video resource defined by the first target task. The present disclosure further provides a display control method, a display terminal, a server and a display system.

Abstract: Disclosed is the use of a tumor gene methylation regulator in preparing anti-tumor drugs. Furthermore, the tumor gene methylation regulator can be used as a sensitizer to be combined with a tumor therapeutic drug for preparing anti-tumor drugs.

Abstract: Aspects of this disclosure provide a method where a normal map corresponding to a target water body region where a dynamic object is located in a next image frame can be acquired based on a water wave map corresponding to the target water body region where the dynamic object is located in a current image frame, and a water wave effect on the target water body region where the dynamic object is located in the next image frame is rendered according to the normal map. On the one hand, through iterative rendering frame by frame, a realistic water wave animation effect can be simulated to make the water surface interaction very natural, providing users with immersive experience. Further, because the water wave rendering is performed only on the target water body region, the complexity is lowered, and the calculation amount is reduced, to better adapt to a mobile terminal application.

Abstract: In one embodiment, a method includes, in an online social network, accessing one or more first content objects associated with a user in the online social network and a second content object, determining topics and corresponding first weights of the topics for the first content objects using a topic extraction algorithm, where each first weight indicates a strength of an association between the corresponding topic and the first content object(s), determining one or more second weights of the topics for the second content object, where each second weight indicates a strength of an association between the corresponding topic and the second content object, and calculating a similarity score for the second content object based on a comparison of, for each topic, the first weight to the second weight, where the similarity score is to be used in a determination regarding presentation of the second content object to the user.