Abstract: Disclosed are a method and an apparatus for optimizing and testing a harness layout of a battery swapping electrical interface. The method includes: obtaining a first distance, a second distance and initial floating data of the battery swapping electrical interface; adjusting the first distance and the second distance to obtain first floating data of the battery swapping electrical interface again; repeatedly inserting or pulling the plug into or out of the socket of the battery swapping electrical interface; obtaining second floating data of the battery swapping electrical interface after repeatedly inserting or pulling the plug into or out of the socket for a preset number of times; and determining the current first distance and second distance as optimal distances if it is judged that the second floating data is in the second index interval.

Abstract: A control circuit of an isolated power supply, an isolated power supply and a control method thereof are disclosed. The control circuit includes a primary original signal generator generating a primary original turn-on signal based on a voltage feedback signal of an output voltage of the isolated power supply, and a secondary control signal generator generating a secondary control signal based on a secondary voltage signal and the primary original turn-on signal. In a current switching period, only when an expected turn-on instant for a primary main transistor switch is earlier than an expected turn-on instant for a secondary synchronous rectifier, will the secondary control signal provide an indication to turn on the secondary synchronous rectifier.

Abstract: A communication method is provided. The method includes: monitoring, by a first terminal, a dialing event, triggering a process of establishing a bootstrap data channel with a service platform media module through the dialing event; after the bootstrap data channel with the service platform media module is successfully established, sending, by the first terminal, a service request message through the bootstrap data channel; and receiving, by the first terminal, a response message for the service request message returned by the service platform media module, and implementing at least one of an interface display or a service logic of a service based on an indication of the response message.

Abstract: Provided is a recombinant KOD polymerase, which is the following A) or B): the polymerase shown in A) is a protein having DNA polymerase activity that is obtained by modifying amino acid residues in at least one of the following 18 positions in a wild-type KOD DNA polymerase amino acid sequence: 675th, 385th, 710th, 674th, 735th, 736th, 606th, 709th, 347th, 349th, 590th, 676th, 389th, 589th, 680th, 384th, 496th and 383rd; the polymerase described by B) is a protein having DNA polymerase activity that is derived from A) by adding a tag sequence to an end of the amino acid sequence of the protein shown in A).

Abstract: The present invention relates to a base station for a cleaning robot to park in, where the cleaning robot includes a wiping board, and a flexible wiping member replaceably butts the wiping board to form a wiping surface to wipe a working surface on which the cleaning robot walks, where the base station includes: a storage module, configured to store a continuous wiping base material; and a feeding module, configured to drive a free end of the wiping base material to be conveyed to a cutting position, to cause the free end to be cut from the wiping base material to form the wiping member. The present invention has the following beneficial effects: After returning to the base station, the cleaning robot may automatically mount a wiping member without intervention by a user.

Abstract: A control circuit and method for an isolated switching-mode converter are disclosed. The control circuit includes a primary-side controller and a secondary-side controller. The primary-side controller can enter a sleep mode in response to a first request signal, and the primary-side controller can turn on or off a first switch in the primary-side circuit in a predefined manner to cause a secondary-side winding in a transformer to generate a predefined first output signal. The secondary-side controller can detect the first output signal and responsively enter the sleep mode. In this way, both the primary-side and secondary-side controllers can enter the sleep mode, thus significantly reducing standby power dissipation of the system.

Abstract: Provided is a recombinant KOD polymerase. A KOD polymerase mutant is a protein as follows: the protein is a protein having DNA polymerase activity that is obtained by modifying amino acid residues in at least one of the following 48 positions in the amino acid sequence of KOD DNA polymerase GH78: 267, 326, 347, 349, 353, 375, 378, 379, 380, 385, 451, 452, 453, 454, 457, 461, 465, 470, 474, 477, 478, 479, 480, 482, 484, 485, 486, 493, 496, 497, 514, 574, 584, 605, 610, 630, 665, 666, 667, 674, 676, 680, 682, 698, 707, 718, 723 and 729, without changing other amino acid sequences; and compared with KOD DNA polymerase GH78, with regard to catalysis, the recombinant DNA polymerase exhibits a faster reaction rate, better catalytic efficiency, better affinity and other advantages, thereby improving the reaction rate of DNA polymerase in sequencing and increasing the reaction read length.

Abstract: Provided are a thermostable B-family DNA polymerase mutant and an application thereof. The thermostable B-family DNA polymerase mutant is provided to mutate amino acid residues in at least two of three sites of group A, i.e., 408, 409, and 410 in an amino acid sequence of thermostable B-family DNA polymerases to obtain proteins having DNA polymerase activity. A-group sites (408/409/410), B-group sites (451/485), C-group sites (389/383/384), D-group sites (589/67/680), E-group sites (491/493/494/497), and F-group sites (474/478/486/480/484) of several B-family DNA polymerases are analyzed to design the mutant.

Abstract: Video coding methods and apparatuses are provided. A set of two or more pictures is coded. The set includes at least a first picture coded with a first spatial resolution, and a second picture coded with a second spatial resolution different from the first spatial resolution. The set of two or more pictures is stored in a decoded picture buffer based on corresponding spatial resolutions. The set of two or more pictures stored in the decoded picture buffer is used as a set of reference pictures for coding one or more successive pictures subsequent to the set of two or more pictures. The set of two or more pictures is incorporated into a reference picture list that contains pictures with at least two different spatial resolutions.

Abstract: Provided in the present invention is a multi-element co-doped sodium-ion positive electrode material, which is characterized in that the phase of the positive electrode material is an O3 phase, the space group thereof is R-3m, and the chemical formula thereof is Na?MaLibCucTidO2+?, wherein M is at least one of Ni, Co, Mn, Cr, V, Al, Fe, B, Si, Mg and Zn, 0.5???1, ?0.1???0.1, 0<a<0.95, 0<b<0.25, 0<c<0.3, 0<d<0.6, a+b+c+d=1, and the charge neutrality condition is met. Also provided in the present invention is a preparation method for and the use of the multi-element co-doped sodium-ion positive electrode material.

Abstract: Display substrate and display device are provided. The display substrate includes: a base and sub-pixels thereon, the sub-pixel includes a light-emitting element and a sub-pixel driving circuit including a driving transistor and a compensation transistor; the compensation transistor has a first electrode coupled to a second electrode of the driving transistor, and a second electrode coupled to a gate electrode of the driving transistor; the compensation transistor includes a gate electrode and an active layer including a channel portion; the display substrate includes a pixel definition layer and shielding patterns, at least a portion of the shielding pattern is located between the pixel definition layer and the gate electrode of the compensation transistor, and an orthographic projection of the shielding pattern onto the base at least partially overlaps with an orthographic projection of corresponding channel portion of the compensation transistor onto the base.

Abstract: Embodiments of the present application provide an energy storage prefabricated box and a battery swapping station. The energy storage prefabricated box includes: a battery compartment including a first wall, the first wall having a cavity structure; and a thermal insulation member disposed in the cavity structure, the thermal insulation member including at least one layer of thermal insulation bags, the thermal insulation bags each being filled with a filler, the at least one layer of thermal insulation bags being arranged in a first direction, each layer of thermal insulation bags extending in a plane perpendicular to the first direction, the at least one layer of thermal insulation bags being used for blocking heat transmission in the first direction, and the first direction being a thickness direction of the first wall.

Abstract: The present invention provides a switched-mode power converter. A control circuit in the switched-mode power converter includes first and second control chips and a magnetic coupling chip coupled to both the former two. The magnetic coupling chip provides a galvanically isolated communication link between the first control chip and the second control chip. With the aid of the second control chip and the magnetic coupling chip, the control circuit can provide a feedback signal to the first control chip and thereby act on turn-on and turn-off of a switching device in the switching circuit. In this way, desirable output and isolation performance can be achieved. Since the first control chip, the second control chip and the magnetic coupling chip can be integrated at a high degree of integration, the switched-mode power converter can have a high degree of integration, reduced size and lower cost.

Abstract: Disclosed are a feature screening method and apparatus, a storage medium, and an electronic device. The method includes: determining feature validation subsets based on data features in sample data; partitioning the sample data into individual sample groups corresponding to different individuals based on an individual to which the sample data belongs, and performing cross-validation partitioning based on the individual sample groups, to determine a training dataset and a validation dataset obtained through partitioning; training a machine learning model of a processing target based on the training and validation datasets corresponding to each feature validation subset; and determining a target data feature group corresponding to the processing target based on training process data of each model.

Abstract: A method for calculating the spatial non-stationary wireless channel capacity for large-scale antenna array communications, includes the following steps: first, constructing a spatial non-stationary channel model with a large-scale antenna array having the mutual coupling effect; building a channel measurement system for the large-scale antenna array, and obtaining measurement data; next, optimizing parameters of the channel model, and simulating the spatial cross-correlation function, then calculating the spatial stationary interval and calculating the channel capacity within the interval and the total channel capacity; and finally comparing simulation results with measurement results, to verify the correctness of the calculation method.

Abstract: A sidelink buffer status report sending method includes: in a case where an uplink resource is not enough to report a total data amount of buffer data of all sidelink logical channels, sending a truncated SL BSR based on preset information of the buffer data, at least one domain of the SL BSR being associated with the preset information; or in a case where an uplink resource is not enough to report a total data amount of buffer data of all sidelink logical channels, sending the SL BSR in at least one SL BSR format based on preset priorities, the SL BSR format being determined based on the preset information of the buffer data.

Abstract: A mechanical continuously variable transmission (CVT) that can store energy in mechanical form simultaneously, so that the vehicle kinetic energy during the last braking can be used for the next starting acceleration, obtaining unexpected energy-saving effects.

Abstract: A gesture recognition method, apparatus and system based on coupling capacitance, which are configured to solve the technical problem in the prior art of it not being possible to recognize a complex gesture due to the fact that the coordinates of a manipulation body on a three-dimensional plane cannot be determined.

Abstract: The embodiments of the present disclosure provide a method for analyzing a body fluid proteome. The method comprises: obtaining a sample to be tested I enriched with low-abundance proteins by removing high-abundance proteins in an initial sample A using an affinity technique; obtaining a sample to be tested II enriched with low-abundance proteins by removing high-abundance proteins in an initial sample B using chemical precipitation, wherein the initial sample A and the initial sample B are obtained from a same body fluid sample of a same subject; obtaining a proteome data set I by performing proteomic analysis on the sample to be tested I; obtaining a proteome data set II by performing proteomic analysis on the sample to be tested II; and determining a final quantified proteome data set of the body fluid sample based on the proteome data set I and the proteome data set II.

Abstract: A two-sided time-sharing driving and acquisition system based on dry contacts comprises k dry contacts, a processor, p acquisition circuits, and m driving circuits. The p acquisition circuits are evenly divided into two groups which are separately disposed at two sides of the k dry contacts. The m driving circuits are separately disposed at the two sides of the k dry contacts. A system fault detection method and the two-sided time-sharing driving and acquisition system have the following advantages: the state of input acquisition circuits and cables monitored in real time during system debugging or running, and faults caused by exceptions of the acquisition circuits and the cables can be reported in time.