Abstract: A method for testing indicator light and an electronic device are provided. The method comprising: receiving a surveillance video of an indicator light; determining a target location of the indicator light in each frame image of the surveillance video according to a template image, and the template image comprising location mark of the indicator light; obtaining image information of the indicator light at the target location according to the location mark; determining a flashing frequency and a duty cycle of the indicator light according to the image information; determining a working status of the indicator light according to the flashing frequency and the duty cycle. The present application is able to use a camera in any position to monitor the working status of the indicator light from any angle, and locate multiple irregular position indicator light in advance before testing the indicator light, thereby improving a testing efficiency.

Abstract: Provided is a method and system for converting trajectory coordinates of moving objects, including: capturing a video of moving objects by drone; extracting trajectory data of moving objects in pixel coordinate system; solving a representation of unit direction vector corresponding to target point in camera coordinate system in ECEF coordinate system based on location information of drone, attitude information of camera, and intrinsic parameter information of camera during capturing of each frame, and in combination with pixel coordinates of target point in pixel coordinate system, to obtain a representation of vector from ECEF origin to the target point; and, representing coordinates of target point in WGS84 coordinate system by using the representation of vector from the ECEF origin to the target point, and finally obtaining the coordinates of target point in WGS84 coordinate system based on target point altitude is the same as altitude at which the drone takes off.

Abstract: A server testing method applied to a testing platform is provided. The testing platform is communicatively connected to a server, the server includes a plurality of processing units and a plurality of switches, the plurality of processing units is interconnected to the plurality of switches according to a topological structure. The server testing method includes obtaining an updated topological structure, by updating the topological structure via updating firmware of the plurality of switches based on a target firmware upgrade package; and generating a test result by controlling the server to perform a target test task corresponding to the updated topology structure. The present application further provides a testing platform, a testing device, and an external storage medium.

Abstract: The present application provides a server testing system. The server testing system includes an electronic device being connected to a touch screen configured to display a test item menu bar and being connected to a server through a universal serial bus (USB) port and I2C and UART ports. The electronic device is configured to generate configuration parameters for the server in response to a selection operation of a user to the test item menu bar; obtain a modified test script by configuring a test script according to the configuration parameters; send the modified test script to the server through the USB port; generate a test result by controlling the server to execute the modified test script; and send the test result to the touch screen for display and save the test result to external storage device.

Abstract: The present disclosure provides a system for evaluating the quality of stem cells, comprising: a quality scoring module, used for calculating the quality score of the stem cells based on the expression level of feature genes related with the quality of stem cells and weight coefficient of the feature genes; a quality evaluation module, used for evaluating the quality of the stem cells based on the quality score of the stem cells; and a result output module, used for outputting a result report of the quality of the stem cells; further comprising: a subpopulation clustering module, used for obtaining single-cell gene expression data and specific quality attributes of the stem cells; a subpopulation identification module, used for determining a quality predictive model of the stem cells, the feature genes related with the quality of stem cells, and weight coefficient of the feature genes based on the single-cell gene expression data and the specific quality attributes of the stem cells.

Abstract: The present disclosure provides a method for evaluating the quality of stem cells, comprising: obtaining expression level of feature genes related with the quality of stem cells; calculating quality score of the stem cells based on the expression level and weight coefficient of the feature genes; and evaluating the quality of the stem cells based on the quality score of the stem cells. The present disclosure determines feature genes related with the quality of stem cells and weight coefficient of the feature genes by using a supervised machine learning model to learn a single-cell gene expression dataset with quality attribute labels, in order to identify the heterogeneity of stem cells under the influence of the microenvironment and predict the resulting quality risk.

Abstract: A device and a method for automatically burning firmware are provided. The device includes a first communication unit, a second communication unit, and a processing unit. The processing unit is connected with the first communication unit and the second communication unit. The first communication unit establishes a communication connection with the first electronic device and receives a to-be-burned firmware from the first electronic device. The second communication unit establishes a wired communication with a PCIe Switch. The processing unit obtains the to-be-burned firmware received by the first communication unit and burns the to-be-burned firmware to the PCIe Switch through the second communication unit.

Abstract: A silicon-based anode material for secondary batteries, a preparation method thereof and a secondary battery are provided. The silicon-based anode material includes: an inner core including an Si particle and silicon oxide SiOx1, where 0<x1<2, a first shell layer including a compound of the general formula MySiOz (0<y?4, 0<z?5, and z?x1) and a C particle, wherein the first shell layer covers the inner core, and the contents of M and C in the first shell layer gradually increase from a side thereof close to the inner core to another side thereof far away from the inner core; and a second shell layer including a carbon film layer or a composite film layer formed by a carbon film layer and a conductive additive, the second shell layer covers the first shell layer. The first charge-discharge cycle capability of the silicon-based anode material is improved, and the manufacturing cost is reduced.

Abstract: The present disclosure provides a data collection system and method. The data collection system includes a microcontroller module, a switch and a storage module. The microcontroller module sends protocol information to the switch, configures a port of the switch, and sends control instruction to the switch. The switch receives the control instruction and transmits data to the microcontroller module according to the control instruction. The microcontroller module processes the data transmitted by the switch and transmits processed data to the storage module. The storage module receives the processed data and save the processed data. The data collection system is easy to deploy, improves production efficiency, simplifies the operation steps of data collection, and reduces the technical threshold of users.

Abstract: Disclosed is an IL-15 mutant fusion protein preparation. Specifically, provided is an IL-15 mutant fusion protein pharmaceutical composition. The composition comprises an IL-15 mutant fusion protein, a buffer solution, a protein stabilizer and a surfactant. The pharmaceutical composition can maintain the stability of the IL-15 mutant fusion protein in the long-term storage and transportation process of the product, and thus, the stability, safety and effectiveness of the drug are ensured.

Abstract: The present disclosure relates to a testing technology field, in particular, relates to a method for testing stability and an electronic device. The method includes: in response to a testing start operation instruction triggered by a user, controlling a relay of a testing circuit of the server switch to perform a power-off operation and a power-on operation; after completing the power-off operation and the power-on operation by the relay, sending a testing instruction to the server switch; in response to the testing instruction, receiving testing data returned by the server switch, and executing a testing task according to the testing data, and obtaining a testing result. The present disclosure is able to achieve independent and out of band stability testing of server switches, greatly saving labor and time costs, and improving testing efficiency.

Abstract: A test method based on a data switch is provided. In the method, a configuration instruction sent from the upper computer is received, and the configuration instruction comprises a direction parameter of data flow and a rate parameter, the data switch is configurated according to the direction parameter of data flow and the rate parameter, and a test based on the configured data switch is performed. The method can not only realize rate conversion of data transmission between the communication devices, but also improve convenience and flexibility of port configuration.

Abstract: An intervention-based shared control method and apparatus in forward collision avoidance scenario of autonomous vehicle includes: acquiring vehicle state data of the autonomous vehicle and inputting the vehicle state data into a constructed forward collision avoidance control model to obtain an optimal nominal collision avoidance trajectory of the autonomous vehicle; and acquiring steering input data of a driver in controlling the autonomous vehicle, and obtaining the shared control method in the forward collision avoidance scenario of the autonomous vehicle. The present disclosure proposes a vehicle model decoupling method for control solution and risk prediction in a high-velocity forward collision avoidance scenario.

Abstract: The technology of this application relates to, at least, a cooling module. The cooling module includes a liquid mixing cavity, a first and a second cooling plate. The first cooling plate is disposed on a side of a first chip and is fastened to the first chip. The second cooling plate is disposed on a side of a second chip and is fastened to the second chip. A temperature of the first chip is not equal to a temperature of the second chip. A flow channel is provided in each of the first cooling plate and the second cooling plate. The first cooling plate and the second cooling plate are each provided with a liquid outlet and a liquid return opening that are communicated with the flow channel. Both the liquid outlet and the liquid return opening are communicated with the liquid mixing cavity. A liquid medium flows between the flow channel and the liquid mixing cavity.

Abstract: The present disclosure provides a staged shearing and forming method for a T-bar cylindrical member, comprising: controlling a shear working surface of a shear spinning wheel in contact with a surface of a cylindrical member blank; controlling a circumferential rotation of the cylindrical member blank; controlling a working surface of a flow spinning wheel to be in perpendicular contact with a surface of the unsaturated I-bar cylindrical member and controlling the cylindrical member blank to be maintained in a circumferential rotational state; controlling the flow spinning wheel to thin one side of the unsaturated I-bar cylindrical member; controlling a fractal working surface of a fractal spinning wheel in contact with a top of the saturated I-bar structure; controlling a working surface of a flat spinning wheel to be in perpendicular contact with a surface of the Y-bar cylindrical member.

Abstract: Provided are a composite coating, a piston, an engine, and a vehicle. The composite coating comprises a metal bonding layer, a transition layer, a ceramic layer, and a sealing layer which are sequentially laminated, wherein the metal bonding layer is configured to be bonded with a piston basic body, the metal bonding layer is a rare earth metal modified bonding layer, and the transition layer is a rare earth metal modified zirconia layer.

Abstract: A circuit board assembly is applied to the field of electronic communications technologies to resolve a prior-art heat dissipation problem of a circuit board. The circuit board assembly combines, on a second circuit board, low-speed signals transmitted between a plurality of I/O modules and an IC chip, and then transmits the combined low-speed signals to the IC chip by using a low-speed cable. A low-speed signal sent by the IC chip to the plurality of I/O modules is extended to a plurality of low-speed signals on the second circuit board, and then the plurality of low-speed signals are separately sent to the plurality of I/O modules. This may be applied to a scenario in which a relatively large quantity of electronic components need to be disposed on a circuit board.

Abstract: An intervention-based shared control method and apparatus in forward collision avoidance scenario of autonomous vehicle includes: acquiring vehicle state data of the autonomous vehicle and inputting the vehicle state data into a constructed forward collision avoidance control model to obtain an optimal nominal collision avoidance trajectory of the autonomous vehicle; and acquiring steering input data of a driver in controlling the autonomous vehicle, and obtaining the shared control method in the forward collision avoidance scenario of the autonomous vehicle. The present disclosure proposes a vehicle model decoupling method for control solution and risk prediction in a high-velocity forward collision avoidance scenario.

Abstract: The application provides a porous negative electrode active material and a preparation method thereof, wherein the porous negative electrode active material includes: a first structure including 0-4 valence silicon elements and metal doping elements, wherein the mass percentage of the silicon elements is not less than 40%, and the mass percentage of the metal doping elements is 1%-15%; the first structure includes a porous structure, and the porous structure includes micropores with a pore diameter of less than 2 nm and mesopores with a pore diameter of 2 nm-50 nm; the first structure further includes silicon grains, and the size of the silicon grains is no more than 10 nm; the adsorption-desorption curve of the porous negative electrode active material has a hysteresis loop, the relative pressure corresponding to the hysteresis loop is 0.4-1, and the adsorption capacity is 5 cm3/g-25 cm3/g.