Abstract: An optimal tracking control method for protecting transient performance of a maglev train is provided, relating to the technical field of maglev trains. The method includes: determining a dynamic magnetic suspension model based on a structure of a suspension frame; determining a maglev train model based on the dynamic magnetic suspension model; constructing a corresponding virtual controller based on the maglev train model; constructing a real controller based on the virtual controller; and controlling, by the real controller, a suspension air gap of a maglev vehicle. This application addresses the issues of inconsistent suspension gap output, high costs, and low resource utilization in existing maglev control technology.

Abstract: A sample simulated scanning device and a use method. The sample simulated scanning device includes a base, a conveying platform provided on the base, a first interaction means provided in the conveying platform, a controller, and a display means. The conveying platform is configured to convey a biological sample placed on the surface of the conveying platform; a second interaction means is arranged in the biological sample; biological species information is stored in the second interaction means; biological part information is stored in the first interaction means; when the biological sample is conveyed to a position where the second interaction means and the first interaction means carry out communication interaction, on the basis of the biological species information and the biological part information, the controller invokes pre-stored video data matching the biological species information and the biological part information, and the display means plays the video data.

Abstract: The embodiments of the present disclosure provide a method and a device for generating a call topology. The method comprises generating an attribute information storage queue for each attribute information dimension of the microservice trace information. The method further comprises filtering the attribute information upon receiving a topology generation instruction. The method further comprises generating a call topology using call trace information corresponding to the target attribute information obtained by filtering.

Abstract: Provided are a method and a device for information storage. The method includes: obtaining a plurality of pieces of target data, the target data including a plurality of pairs of key-value data; generating, based on an order of the plurality of pieces of target data, a first column storage file that stores key data included in each piece of target data; and generating, based on the order of the plurality of pieces of target data, a second column storage file that stores value data included in each piece of target data; wherein first position information of key data of each piece of the target data in the first column storage file is same as second position information of corresponding value data in the second column storage file.

Abstract: Disclosed in the present application are an anomaly recognition method and an anomaly recognition system for tracks of trucks. The method includes: obtaining a running track T according to global positioning system (GPS) data of running of a truck to be recognized; employing a track compression algorithm for the running track T to obtain a compressed track set C; employing a density-based clustering algorithm and performing grouping according to set time periods to obtain a network graph representing a motion track of each time period; inputting the network graph into a track embedding model established and trained in advance to obtain an explicit embedding vector corresponding to each network graph; and determining stability according to a distance between the vectors, and classifying points with the stability lower than a set threshold as abnormal tracks. The track embedding model is realized by employing a Skipgram model on the basis of a graph2vec algorithm.

Abstract: A camera module and an electronic device are disclosed. The camera module is configured to be connected with a display device, and the display device is provided with a main board. The camera module includes: a mounting base configured to be fixedly connected with the display device; and a functional portion configured to be detachably connected with the mounting base. The functional portion includes a casing, a camera and a first adapter plate which are mounted in the casing. The first adapter plate and the camera are connected. The first adapter plate is configured to be connected to the main board in the display device when the functional portion is mounted on the mounting base.

Abstract: A method for handling a trusted execution environment operating system crash is provided. The method includes: when it is detected, in a running process of a security service, that a TEE OS crashes, an electronic device stores a hardware status parameter of a TEE and a security context of an REE that are obtained when the TEE OS crashes, and suspends the security service; the electronic device restarts the TEE OS; the electronic device sets, based on the stored hardware status parameter of the TEE, a hardware status parameter of the TEE obtained after the TEE OS is restarted; the electronic device sets, based on the stored security context of the REE, a security context of the REE obtained after the TEE OS is restarted and a context of the TEE obtained after the TEE OS is restarted; and the electronic device restores the security service.

Abstract: A sample simulated scanning device and a use method. The sample simulated scanning device includes a base, a conveying platform provided on the base, a first interaction means provided in the conveying platform, a controller, and a display means. The conveying platform is configured to convey a biological sample placed on the surface of the conveying platform; a second interaction means is arranged in the biological sample; biological species information is stored in the second interaction means; biological part information is stored in the first interaction means; when the biological sample is conveyed to a position where the second interaction means and the first interaction means carry out communication interaction, on the basis of the biological species information and the biological part information, the controller invokes pre-stored video data matching the biological species information and the biological part information, and the display means plays the video data.

Abstract: A pile-side lateral static load device includes a jack system, a liftable jack cart, a loading jack fixing system, and a loading system. The jack system includes a jack body. The jack system is installed on the liftable jack cart through the loading jack fixing system. The loading system is installed on the loading jack fixing system, and the loading system includes counter-pressure loading systems and counter-tension loading systems. The pile-side lateral static load device has a simple structure, is convenient to install and operate, and can complete lateral loading and in-situ tests under different pile diameters, different tonnages and different precisions, so as to facilitate a simulation test of in-situ lateral loading of a pile.

Abstract: A display module and an electronic device are provided, the display module including: an upper substrate including a first electrode provided on the substrate, and a plurality of projections provided on a first surface of the upper substrate and arranged in a matrix; a lower substrate including a second electrode provided on the lower substrate, and a plurality of grooves provided on a first surface of the lower substrate; and an inverted emulsion. The first surface of the upper substrate is on the first surface of the lower substrate, each projection matches a groove corresponding thereto to form an accommodating space, and the inverted emulsion is filled in the accommodating space.

Abstract: A method for handling a trusted execution environment operating system crash is provided. The method includes: when it is detected, in a running process of a security service, that a TEE OS crashes, an electronic device stores a hardware status parameter of a TEE and a security context of an REE that are obtained when the TEE OS crashes, and suspends the security service; the electronic device restarts the TEE OS; the electronic device sets, based on the stored hardware status parameter of the TEE, a hardware status parameter of the TEE obtained after the TEE OS is restarted; the electronic device sets, based on the stored security context of the REE, a security context of the REE obtained after the TEE OS is restarted and a context of the TEE obtained after the TEE OS is restarted; and the electronic device restores the security service.

Abstract: The present disclosure relates to a camera module and an electronic device. The camera module is configured to be connected with a display device, and the display device is provided with a main board. The camera module includes: a mounting base configured to be fixedly connected with the display device; and a functional portion configured to be detachably connected with the mounting base. The functional portion includes a casing, a camera and a first adapter plate which are mounted in the casing. The first adapter plate and the camera are connected. The first adapter plate is configured to be connected to the main board in the display device when the functional portion is mounted on the mounting base.

Abstract: A method of forming an array substrate, the array substrate and a display device are provided. The method of forming the array substrate includes: in a case that a display unit is formed on one of two opposite surfaces of a base substrate and a driving circuit is formed on the other of the two opposite surfaces of the base substrate, performing a roughening treatment on edge regions of the two opposite surfaces of the base substrate and a side surface of the base substrate connecting the edge regions of the two opposite surfaces, to form a roughened region; and forming, at the roughened region, a metal wiring connecting a signal input terminal of the display unit and a signal output terminal of the driving circuit.

Abstract: A p-y curve-based element test device is provided. An upper support plate is located above a lower support plate and is fixedly connected to the lower support plate through truss supports symmetrically arranged on left and right sides, and at least one truss support is arranged on each side. A sample container, a servo consolidation mechanism and multidirectional servo actuators are connected to the truss support on the two sides. The servo consolidation mechanism is located above the sample container, and the multidirectional servo actuators are arranged above the servo consolidation mechanism and below the sample container, respectively. Identical loads are synchronously applied from above and below to realize horizontal movement of a pile element to simulate the load condition of a soil body, and a pressure is applied by a servo consolidation device to simulate the stress condition of the soil body at a certain depth.

Abstract: A p-y curve-based element test device is provided. An upper support plate is located above a lower support plate and is fixedly connected to the lower support plate through truss supports symmetrically arranged on left and right sides, and at least one truss support is arranged on each side. A sample container, a servo consolidation mechanism and multidirectional servo actuators are connected to the truss support on the two sides. The servo consolidation mechanism is located above the sample container, and the multidirectional servo actuators are arranged above the servo consolidation mechanism and below the sample container, respectively. Identical loads are synchronously applied from above and below to realize horizontal movement of a pile element to simulate the load condition of a soil body, and a pressure is applied by a servo consolidation device to simulate the stress condition of the soil body at a certain depth.

Abstract: The present disclosure provides a resource presentation method, a resource presentation apparatus and a storage medium. The method includes: acquiring (320) image data for a selected time period, wherein the image data contains at least one human object; determining (340) whether the image data contains at least one target human object; selecting (360) at least one target resource from a resource list based on a characteristic attribute of the human object or the target human object; controlling (380) a presentation mode for presenting the target resource based on a result of determining whether the image data contains at least one target human object.

Abstract: A method and a device for displaying a commodity advertisement, and a computer-readable storage medium. The method for displaying a commodity advertisement includes: obtaining object attribute information of one or more display objects of a display terminal who view a commodity advertisement, the object attribute information including at least gender information of each display object and display object quantity information corresponding to each gender; determining a first display object according to the obtained object attribute information, and selecting, according to the first display object, a first advertisement from a first category of commodity advertisements for display; and obtaining distance information between at least one display object and a preset target during displaying the first advertisement, and determining, according to the distance information, whether to select a second advertisement from a second category of commodity advertisements for display.

Abstract: A method of forming an array substrate, the array substrate and a display device are provided. The method of forming the array substrate includes: in a case that a display unit is formed on one of two opposite surfaces of a base substrate and a driving circuit is formed on the other of the two opposite surfaces of the base substrate, performing a roughening treatment on edge regions of the two opposite surfaces of the base substrate and a side surface of the base substrate connecting the edge regions of the two opposite surfaces, to form a roughened region; and forming, at the roughened region, a metal wiring connecting a signal input terminal of the display unit and a signal output terminal of the driving circuit.

Abstract: A display module and an electronic device are provided, the display module including: an upper substrate including a first electrode provided on the substrate, and a plurality of projections provided on a first surface of the upper substrate and arranged in a matrix; a lower substrate including a second electrode provided on the lower substrate, and a plurality of grooves provided on a first surface of the lower substrate; and an inverted emulsion. The first surface of the upper substrate is on the first surface of the lower substrate, each projection matches a groove corresponding thereto to form an accommodating space, and the inverted emulsion is filled in the accommodating space.

Abstract: This application discloses a distance measurement method by an unmanned aerial vehicle (UAV) and a UAV. The distance measurement method by the UAV includes the following steps: obtaining a first image taken by a first imaging apparatus on the UAV at a moment and a second image taken by a second imaging apparatus on the UAV at the moment; determining a first pixel block in the first image and a second pixel block that matches the first pixel block and that is in the second image; where any of the first pixel block and the second pixel block includes at least two pixel points; and determining a distance between the UAV and a target object according to a parallax value of the first pixel block and the second pixel block. As a result, distance measurement efficiency can be improved.