Abstract: The invention discloses a distributed IoT terminal system and method based on a fiber optic bus RoF. The system comprises a core application part, a pre-channel part, a transmission channel part, an acquisition field part, an acquisition terminal part and a data source. The invention adopts the principle of light-borne ROF to adapt to pan-socialization, decentralization, verticalization, refinement, full traceability, full lifecycle management and governance, instant, real-time, online, interactive and distributed IoT applications. The integrated and integrated application of the invention improves social efficiency and saves social cost. It may be integrated and integrated the application into any application systems, and realized dynamic instant, real-time, online, centimeter level positioning application. It can infer the specific location of the positioning device.

Abstract: Embodiments allocate and synchronize virtual currency balance of a user among multiple user devices. A user profile is maintained at a central server. The user profile stores a total virtual currency balance and a designation of multiple user devices associated with the user. The total virtual currency balance may be divided among and allocated to the multiple user devices, for example, based on usage data associated with each user device. The portion of the total virtual currency balance allocated to each user device may be stored locally at a local wallet of the corresponding user device. The local virtual currency balance on a user device may be used to purchase goods or services, such as playing a game. If the locally stored virtual currency balance of a given user device runs low, the user device may request additional virtual currency from other user devices without contacting the central server.

Abstract: An ultrasound guided puncture device and an ultrasound guided puncture apparatus are disclosed. The ultrasound guided puncture device includes a puncture needle tube and an ultrasound transducer. One end of the puncture needle tube has a puncture needle head, and the ultrasonic transducer is housed in the puncture needle tube and extends to the puncture needle head. The ultrasonic transducer includes multiple ultrasonic array elements for transmitting and receiving ultrasonic waves, and the multiple ultrasonic array elements are arranged at the puncture needle head. In actual use, electronic scanning imaging is performed through the multiple ultrasound array elements, hence a wide imaging range. It can effectively recognize the structure of the tissue in front of the puncture needle head, thereby facilitating the planning of the best puncture path.

Abstract: A plurality of variable data of personal attribute information associated with at least one vehicle insurance user is received at a prediction server. Based on a service scenario requirement, a pre-constructed prediction algorithm is selected. The plurality of variable data is processed by one or more processors using the pre-constructed prediction algorithm. At least one prediction result is generated as the prediction server.

Abstract: The present disclosure discloses an array substrate and a preparation method thereof. After a first passivation layer is formed, residual gas is directly drawn out of a closed chamber to prevent the residual gas from reacting to form an unstable layer on the first passivation layer. Furthermore, after the residual gas is drawn out, a preset gas fills the closed chamber, and is retained for a preset time period and then drawn out. The retaining of the preset gas can effectively alleviate the damage to the passivation layer by static electricity.

Abstract: An entity transaction attribute determination method for determining an attribute state or an attribute category of a to-be-predicted entity on a preset transaction is provided. The method comprises obtaining a plurality of historical relational networks sequentially arranged under a temporal order; determining, for each of the historical relational networks and through vector fusion of neighbor nodes, a plurality of description vectors of the to-be-predicted entity; processing, through a pre-trained time-series neural network, the description vectors to obtain an output result; and determining, according to the output result, the attribute state or the attribute category of the preset transaction attribute for the to-be-predicted entity. The method improves the accuracy of predicting a preset transaction attribute of an entity through the analysis of the description vectors.

Abstract: An entity transaction attribute determination method for determining an attribute state or an attribute category of a to-be-predicted entity on a preset transaction is provided. The method comprises obtaining a plurality of historical relational networks sequentially arranged under a temporal order; determining, for each of the historical relational networks and through vector fusion of neighbor nodes, a plurality of description vectors of the to-be-predicted entity; processing, through a pre-trained time-series neural network, the description vectors to obtain an output result; and determining, according to the output result, the attribute state or the attribute category of the preset transaction attribute for the to-be-predicted entity. The method improves the accuracy of predicting a preset transaction attribute of an entity through the analysis of the description vectors.

Abstract: A multi-row ultrasonic imaging apparatus and an ultrasonic imaging instrument are disclosed. The multi-row ultrasonic imaging apparatus includes a housing, and a first ultrasonic transducer, a second ultrasonic transducer, and an adjustment mechanism that are installed in the housing. Ultrasonic waves emitted by the first ultrasonic transducer and the second ultrasonic transducer can intersect to form a confocal point. At least one of the first ultrasonic transducer and the second ultrasonic transducer is connected to the adjustment mechanism to move relative to the housing under the action of the adjustment mechanism, so as to adjust the position of the confocal point.

Abstract: A data visual analysis method, system and terminal, and a computer readable storage medium are provided. The method includes: obtaining to-be-analyzed parameters and generating a data analysis model, the data analysis model including a plurality of execution units; the data sources collecting data information related to the to-be-analyzed parameters; the execution units performing analysis on the data information collected by the data sources, to obtain execution results of the execution units; and visually outputting the execution results of the execution units.

Abstract: The present disclosure provides a wire and arc additive manufacturing (WAAM) method for a magnesium alloy. The method includes the following steps: step 1: performing a WAAM process assisted by cooling and rolling; step 2: milling side and top surfaces of an additive part; step 3: performing, by friction stir processing (FSP) equipment, an FSP process on the additive part, and applying cooling and rolling to a side wall of the additive part through a cooling and rolling device during the FSP process; step 4: finish-milling the top surface of the additive part for a WAAM process in the next step; and step 5: repeating the above steps cyclically until final forming of the part is finished. The present disclosure completely breaks dendritic structures and refines grains in the WAAM process of the magnesium alloy, thereby effectively repairing defects such as pores and cracks.

Abstract: The present disclosure provides a wire and arc additive manufacturing (WAAM) method for a titanium alloy. The method includes the following steps: step 1: performing a WAAM process assisted by cooling and rolling; step 2: milling side and top surfaces of an additive part; step 3: performing, by friction stir processing (FSP) equipment, an FSP process on the additive part, and applying cooling and rolling to a side wall of the additive part through a cooling and rolling device during the FSP process; step 4: finish-milling the top surface of the additive part for a WAAM process in the next step; and step 5: repeating the above steps cyclically until final forming of the part is finished. This WAAM method completely breaks dendritic structures and refines grains in the WAAM process of the titanium alloy, thereby effectively repairing defects such as pores and cracks.

Abstract: A method of determining a geofence based on user locations belongs to the field of computer technologies. The method of determining a geofence based on user locations includes: obtaining user locations in a plurality of pieces of user data; aggregating the user locations according to similarities in latitude and longitude coordinates of the user locations, to determine aggregation points and a central aggregation point; denoising the aggregation points according to distances between the aggregation points and the central aggregation point; and sorting, according to values of longitude coordinates or latitude coordinates, aggregation points obtained after the denoising, to determine geofence boundary data in a preset format.

Abstract: The present disclosure relates to an active neutral-point clamped (ANPC) three-level converter, and a method and controller for controlling thereof. The ANPC three-level converter includes at least one bridge leg, and a controller. Each of the at least one bridge leg includes multiple input terminals, an output terminal, and multiple switches connected between the multiple input terminals and the output terminal. The multiple input terminals include a first input terminal, a second input terminal, and a third input terminal. The multiple switches include a first external switch, a first internal switch, a first clamp switch, a second external switch, a second internal switch, and a second clamp switch. The method for controlling the NPC three-level converter includes a method for controlling the ANPC three-level converter to stop operating, and a method for controlling the ANPC three-level converter to start to operate.

Abstract: Provided is a balanced armature type speaker. The balanced armature type speaker includes a housing, a driving assembly and a diaphragm. The housing includes an upper inner cavity and a lower inner cavity, the lower inner cavity and the upper inner cavity are through from top to bottom, the driving assembly is located in the lower inner cavity, and the driving assembly includes a magnet, a coil, an armature and an ejector pin. The armature is inserted into the magnet and the coil sequentially, the ejector pin is fixedly connected to the armature and the diaphragm, and the diaphragm is located in the upper inner cavity. The housing is shaped to be wide at the upper part and narrow at the lower part, and in the horizontal direction, a width of the upper inner cavity is larger than a width of the lower inner cavity.

Abstract: A system on chip, an access command routing method, and a terminal are disclosed. The system on chip includes an IP core and a bus. The IP core is configured to: obtain, based on an access address corresponding to an access command, an address range configuration identifier corresponding to the access address; and transmit the access command and the address range configuration identifier to the bus, where the address range configuration identifier is used by the bus to route the access command. The bus is configured to route the access command to a system cache or an external memory based on the address range configuration identifier.

Abstract: The invention discloses a distributed IoT terminal system and method based on a fiber optic bus RoF. The system comprises a core application part, a pre-channel part, a transmission channel part, an acquisition field part, an acquisition terminal part and a data source. The invention adopts the principle of light-borne ROF to adapt to pan-socialization, decentralization, verticalization, refinement, full traceability, full lifecycle management and governance, instant, real-time, online, interactive and distributed IoT applications. The integrated and integrated application of the invention improves social efficiency and saves social cost. It may be integrated and integrated the application into any application systems, and realized dynamic instant, real-time, online, centimeter level positioning application. It can infer the specific location of the positioning device.

Abstract: The present application belongs to the field of locomotive braking control, and relates to a locomotive braking control system and control method, including a brake cylinder equalizing pipe control system and a brake cylinder control system; wherein, the brake cylinder equalizing pipe control system can compare pre-control pressure of the brake cylinder and the pre-control pressure of the brake cylinder equalizing pipe, and output the higher one as the brake cylinder equalizing pipe pressure; and the brake cylinder control system can compare pre-control pressure of the brake cylinder and the brake cylinder equalizing pipe pressure, and output the higher one as the brake cylinder pressure to realize brake; the redundancy of the two control systems can also be realized.

Abstract: A tundish, wherein a steel passing hole (43) is provided at a lower portion of a gas-curtain weir refractory body (42); an argon duct (46), a gas chamber (45) and a gas-permeable brick (44) are connected to form a gas-curtain generating device, and the gas-curtain generating device is installed at the lower portion of the gas-curtain weir refractory body (42); the gas-permeable brick (44) is provided in association with the position of the steel passing hole (43), and a length of the gas-permeable brick is designed larger than a width of the steel passing hole (43); and a gas-curtain weir plate (4) is provided in a tundish container, the gas-curtain weir refractory body (42) crosses the tundish container horizontally, and divides the tundish container into a first region and a second region.

Abstract: The present disclosure provides a liquid injection device, including a conveying mechanism, a weighing mechanism, a lifting mechanism and a guide mechanism. The weighing mechanism is positioned below the conveying mechanism. The lifting mechanism is configured to transfer a battery on the conveying mechanism to the weighing mechanism. The guide mechanism includes a first guide plate, a second guide plate and a power member. A distance between the second guide plate and the first guide plate may be adjusted through the power member, so that the liquid injection device may be compatible with batteries with different models. It is unnecessary to perform model change operation when the battery is changed, thus improving production efficiency.

Abstract: Embodiments of the present application provide a backlight module, a display panel and a display device. The backlight module includes a metal backplate, a control unit, and a switch, a metal backplate is applied with a coupling voltage under an electric field coupling action, the switch includes a control terminal, a first terminal and a second terminal, the first terminal is electrically connected with the metal backplate, and a second terminal is grounded, the control unit is electrically connected with the metal backplate and the control terminal of the switch, respectively, the control unit controls whether the switch is turned on or turned off depending on a value of the coupling voltage, and the control unit controls whether the metal backplate is grounded.