Abstract: Disclosed by the present application are a system and method for multi-device media data management, and a robot device. A detection module detects a device located within a detection range, and determines according to a detection result whether to add the device to a device management list. A storage module obtains media data generated by each device in the device management list and stores the media data in a backup system in association with a corresponding tag. An instruction module receives an instruction of a user and analyzes the content of the instruction, the content comprising a tag and management type corresponding to the media data. A management module performs a management operation on corresponding media data according to the analyzed content.

Abstract: The present application provides a double-beam laser polishing device and a double-beam laser polishing method for an aluminum alloy, which includes a frame; a rotary workbench and an optical path system, which are arranged on the frame. The optical path system includes: a first fiber laser, a second fiber laser, a first three-dimensional galvanometer, and a second three-dimensional galvanometer. The first three-dimensional galvanometer is connected with the first fiber laser through an optical fiber, and the second three-dimensional galvanometer is connected with the second fiber laser through an optical fiber. The first three-dimensional galvanometer and the second three-dimensional galvanometer are arranged side by side above the rotary workbench in a horizontal direction.

Abstract: The present application provides a double-beam laser polishing device and a double-beam laser polishing method for an aluminum alloy, which includes a frame; a rotary workbench and an optical path system, which are arranged on the frame. The optical path system includes: a first fiber laser, a second fiber laser, a first three-dimensional galvanometer, and a second three-dimensional galvanometer. The first three-dimensional galvanometer is connected with the first fiber laser through an optical fiber, and the second three-dimensional galvanometer is connected with the second fiber laser through an optical fiber. The first three-dimensional galvanometer and the second three-dimensional galvanometer are arranged side by side above the rotary workbench in a horizontal direction.

Abstract: The present application discloses a VR scene and an interaction method thereof, and a computer-readable storage medium. The method includes: constructing a semantics path, here the semantics path is a trajectory drawn on geometry of the virtual environment agent and composed of nodes and directed connections among the nodes, and information of the nodes includes at least node position information, node behavior semantics information and node environment semantics information; the semantics path, moving the virtual character agent according to its own task and the semantics path, and executing a target action; acquiring action result information according to information of a target action of the virtual character agent at the node of the semantics path, and instructing the semantics path processing unit to update the node environment semantics information of the node of the semantics path. Embodiments of the present application can effectively realize interaction in the VR scene.

Abstract: This application discloses a target tracking method and apparatus, a terminal device, and a storage medium. The target tracking method includes: determining a path node nearest to the virtual character as a travelling node according to a starting position of the virtual character; moving toward the travelling node until arriving at the travelling node; determining a current next path node to be reached by the virtual character according to the path node where the virtual character is currently located, the path node currently nearest to a target being tracked and a pre-stored path routing matrix, here the path routing matrix is a matrix storing an optimal next path node from a first path node to a second path node; moving to the next path node to approach the target being tracked. Embodiments of this application can improve the target tracking efficiency of the virtual character in the VR scene.

Abstract: A method for generating a limitless path in a virtual reality environment (VR) for a continuous locomotion within a real physical space using Head-Mounted-Display (HMD) device associated with a user is provided. The method includes determining a line segment between two points that corresponds to an initial path travelled by the user. The method includes detecting a boundary of the VR environment to generate a next line segment. The method includes generating and adding a new line segment to end of the initial path. The method includes generating and adding the new line segment to the end of the next line segment. The method includes generating an updated path by adding the new line segment in a direction at the angle of shift angle to the direction of the next line segment. The method includes, configuring to output updated path as two-dimensional points to render updated path into VR environment.

Abstract: This application discloses a target tracking method and apparatus, a terminal device, and a storage medium. The target tracking method includes: determining a path node nearest to the virtual character as a travelling node according to a starting position of the virtual character; moving toward the travelling node until arriving at the travelling node; determining a current next path node to be reached by the virtual character according to the path node where the virtual character is currently located, the path node currently nearest to a target being tracked and a pre-stored path routing matrix, here the path routing matrix is a matrix storing an optimal next path node from a first path node to a second path node; moving to the next path node to approach the target being tracked. Embodiments of this application can improve the target tracking efficiency of the virtual character in the VR scene.

Abstract: A device and a method of anti-unmanned aerial vehicle based on multi-camera tracking and positioning, including: a bracket, defined a center, a circumference surrounding the center and a central axis passing through the center; at least three cameras, the cameras are evenly distributed and inclined outwardly on the circumference of the bracket, and center lines of view of the cameras forms an inverted cone; a directional antenna, configured to be arranged on the central axis of the bracket; an electromagnetic module, configured to be coupled to the directional antenna; a pan-tilt, connected to the center of the bracket and configured to drive the bracket to rotate; and a control unit, configured to control the pan-tilt to track a target and lock on to the target according to the video image provided by the cameras, such that the electromagnetic module is manipulated to attack the target.

Abstract: A system and method for visualizing and querying high dimensional data to a user. The system includes a user device, a data-pearls visualization and querying server. The server obtains the high dimensional data from the user device associated with user. The server generates data clusters and sub-divides the data clusters into non-overlapping subsets of data-pearls using a clustering technique. The server selects a shape for each data-pearl by comparing a distance between centroid of a data-pearl and a farthest point from a determined centroid using Lp norm distance measures. The server configures each data-pearl in a three-dimensional plot. The server enables the user to visualize the data-pearls on a screen of the user device. The server queries data based on a query using data dimension technique. The server dimensions data related to the query through determined classifiers based on filtered data after pruning unrelated data to the query.

Abstract: A system for generating a queryable structured document from an unstructured document using a machine learning model is provided. The system (i) identifies breakpoints in the unstructured document, (ii) segments the unstructured document into one or more fragments based on identified breakpoints, (iii) classifies the one or more fragments as one or more title fragments or one or more non-title fragments based on a sequence of a position of words used in each fragment of the one or more fragments, (iv) constructs a data tree using the one or more title fragments and the one or more non-title fragments as a node of the data tree; (v) assigns one or more vectors to each node of the data tree, and (vi) generates a structured document by providing matrix representation for each node of the data tree.

Abstract: The present application discloses a VR scene and an interaction method thereof, and a computer-readable storage medium. The method includes: constructing a semantics path, here the semantics path is a trajectory drawn on geometry of the virtual environment agent and composed of nodes and directed connections among the nodes, and information of the nodes includes at least node position information, node behavior semantics information and node environment semantics information; the semantics path, moving the virtual character agent according to its own task and the semantics path, and executing a target action; acquiring action result information according to information of a target action of the virtual character agent at the node of the semantics path, and instructing the semantics path processing unit to update the node environment semantics information of the node of the semantics path. Embodiments of the present application can effectively realize interaction in the VR scene.

Abstract: The present invention relates to soil moisture and soil matric potential measurement using microwave sensor composed of sensor element (1), porous matrix (2), phase shift measurement circuit (3) and circuit protective layer (4). Operating principle is based on the phase shift method in which phase shift of the signal propagating along sensor element (1) is related to the porous matrix (2) moisture content. Porous matrix (2) is in contact with surrounding soil (5) and reflects its water content. Phase shift measurement circuit (3) excite sensor element (1) and measures phase shift. The sensor is independent of soil electrical conductivity owing to the operating frequency in microwave range (˜GHz). In this manner, it is less sensitive to the soil type and therefore less demanding for calibration. The sensor is made of durable elements without consumable parts which enable a long-term operation. Its low power consumption makes it suitable for Internet of Things concept and automatic irrigation systems.

Abstract: A method for providing maximum traffic flow throughput and controlling vehicular pollution concentration is provided. The method includes (i) processing a source location and a destination location obtained from a user device associated with a user to determine at least one possible route to reach the destination location from the source location, (ii) determining at least one maximum flow route that includes at least one edge with an edge capacity from the at least one possible route, (iii) determining maximum traffic flow capacity for the at least one maximum flow route, (iv) determining active traffic flow routes by comparing continuously if shared or common edges of a plurality of route solutions is less than or equal to a pre-defined limit and (v) partitioning the maximum traffic flow capacity for the active traffic flow routes and permuting each partition of the maximum traffic flow capacity for the active traffic flow routes.

Abstract: A system for evaluating and facilitating customized source code based on the usability guidelines using a usability code pattern analysis is provided. The system includes a decompile module, a guideline loader module, an inspection module, a validation module, a recommendation module, and one or more databases. The system obtains the input package from the user computing device to generate customized the usability code pattern for the input package by decompiling, inspecting and validating the input package against a validation case based on the usability guidelines. The input package layout files decompiled in XML and JAR file formats. The evaluation of the usability guideline is based on existing usability guidelines. The validation module validates the usability of the input package at each instance periodically using validation test cases.

Abstract: A telescopic differential screw mechanism based 3-DOF Parallel Manipulator system to enable differential length and omnidirectional bending is provided. The telescopic differential screw mechanism based 3-DOF Parallel Manipulator system includes a first circular rotating plate 102, a second circular rotating plate 104, three or more telescopic screw assemblies 106A-C and three or more actuators 108A-C. Each telescopic screw assembly 106 includes a pair of master screws 110, a pair of successive screws 112 and a universal joint 116. The three or more telescopic screw assemblies 106A-C are actuated differentially using the three or more actuators 108A-C to achieve omnidirectional bending with high angular rotations in a range of 0 to 75 degree.

Abstract: A multidirectional locomotive module with omnidirectional bending that is compliant along multiple axis is provided. The locomotive module includes, (A) a first part that includes (i) one or more circular rigid components which are coupled using a two degree of freedom joint, (ii) bending actuator that actuates the two degree of freedom joint enabling bending of the multidirectional locomotive module to an angle ranging from 0 to 90 degrees about a Z-axis in a direction to achieve surface compliance with an external surface, and (B) a second part that is elongated in shape with circular cross-section along a surface length and hemispherical in shape an end portion with a surface that is formed by a power transmission sprocket chain and an arrangement of curved components enabling sideways rolling of the multidirectional locomotive module, also enabling wheeled and legged locomotion in vertical position.

Abstract: A microfluidic device including a serum separator, a quantum dot and antibody inlet connected to the serum separator, a quantum dot linked immunosorbent assay (QLISA) chamber connected to the serum separator, and an outlet connected to the QLISA chamber. The microfluidic device is configured to determine an amount of drug in a serum.

Abstract: A method for colorimetric detection of cholesterol in a sample is disclosed. The method includes adding beta-cyclodextrin and cholesterol to a phenolphthalein indicator solution in the presence of a phosphate buffer solution to create a solution medium and quantifying the cholesterol as a function of a complexed beta-cyclodextrin in the solution medium.

Abstract: The various embodiments herein provide an energy harvester which can capacitively harvest stray electric field from low-voltage AC power lines without a physical grounding connection. The energy harvester comprises an inner electrode, an outer electrode and a circuit. The inner electrode forms an inner periphery of an upper portion of a harvester housing. The outer electrode forms an inner base of a lower portion of the harvester housing to provide a local ground reference. The circuit is housed within the lower portion of the harvester housing to direct stored energy and control an energy discharge.

Abstract: A method including writing of kernel modules to process Magnetic Resonance (MR) data acquired from MRI Scanner using a parallel implementation of Magnetic Resonance Fingerprinting (MRF) algorithm on a parallel architecture; and launching multiple threads simultaneously.