Abstract: Disclosed in the present invention is a voltage and current control method for a direct-current transmission system. The method comprises: calculating a DC voltage reference value of a voltage source converter of a DC voltage control end, on the basis whether a direct-current voltage end of a direct-current pole of a direct-current transmission system substantially controls a direct-current voltage; using ½ of the calculated direct-current voltage reference value of the voltage source converter as a bridge arm voltage direct-current bias, calculating a difference between the direct-current voltage reference value of the voltage source converter and a measured direct-current voltage value, and inputting the difference into a direct-current voltage control outer loop of the voltage source converter to perform closed-loop control, so as to control the direct-current voltage or the direct current of the direct-current pole.

Abstract: Disclosed methods for network modernization include obtaining a list of end-to-end circuits carried in a circuit-switched network, calculating, for each circuit, an early retirement credit (ERC) score and a circuit load factor (CLF) score, selecting, dependent on the ERC and CLF scores, a circuit to migrate to a new network, adding the selected circuit to a circuit migration sequence, and removing the circuit from the list. The ERC score represents the number of circuit-switching units on which no circuits would be carried and that would remain in the network following its removal. The CLF score represents an average number of circuits that would be carried on each circuit-switching unit currently traversed by the circuit following its removal. When two circuits have the highest ERC score, the circuit with the lowest CLF score is selected for migration. The method is repeated until the list is empty.

Abstract: Disclosed is an oil pressure type seismic mitigation and isolation support and a use method thereof. An upper plate slot is arranged above a lower plate slot, the lower part of the upper plate slot and the upper part of the lower plate slot are both provided with grooves, and the upper part of the upper plate slot and the lower part of the lower plate slot are both provided with embedded bars; a steel cushion body has a shape of a cuboid and is arranged on the upper surface of a seismic mitigation layer, the seismic mitigation layer is arranged in the groove at the upper part of the lower plate slot, and the upper part of the steel cushion body extends into the groove of the upper plate slot and is in contact with the bottom surface of the groove one-direction double-direction.

Abstract: An auto-scaling group management method is provided, including: receiving an auto-scaling group configuration message, the auto-scaling group configuration message including level information of an auto-scaling group, initialization configuration information of a compute instance of the auto-scaling group, and first auto-scaling policy information of the auto-scaling group; creating the compute instance of the auto-scaling group based on the initialization configuration information in a service server included in a level indicated by the level information of the auto-scaling group; and performing an operation on the compute instance of the auto-scaling group based on the auto-scaling policy information of the auto-scaling group. In the foregoing technical solution, a deployed auto-scaling group may support cross-layer deployment or operation.

Abstract: A fastening device, a method of operating the fastening device, and a display panel are provided. The fastening device includes a diffuser and a limiter, wherein the limiter includes a deformation portion and a non-deformation portion disposed opposite to each other to enclose a receiving portion, and the diffuser is configured to be received in the receiving portion, so as to adjust a deformation size of the deformation portion by movement of the diffuser.

Abstract: An inter-vehicle wireless payment method employing 5G communication network comprises a requesting vehicle sending a payment request to a base station; the base station retrieving vehicle information of a friend vehicle of the requesting vehicle based on the payment request; the base station encrypting request information with the vehicle information and broadcasting it; vehicles in coverage of the base station decoding broadcast information with respective vehicle information, and upon successful decoding, the friend vehicle as a responding vehicle acquiring the request information; the responding vehicle generating payment information based on the request information and sending it to the base station, the base station sending the payment information to a payment platform, and the payment platform returning a payment result to the responding vehicle; and the base station allocating a D2D communication channel to the requesting and responding vehicles, and the responding and requesting vehicles communicating

Abstract: A method for providing an edge service includes a first security agent that performs data stream transmission with a plurality of endpoint computing devices through an edge link, and each endpoint computing device obtains, using the first security agent, an edge service provided by an edge server. The first security agent determines, based on a data stream transmitted between each endpoint computing device and the first security agent, an abnormal endpoint computing device in the plurality of endpoint computing devices. The first security agent generates link abnormality information, and the link abnormality information includes an address of the abnormal endpoint computing device. The first security agent sends the link abnormality information to the security controller. The security controller receives the link abnormality information, and generates edge link information including an address of a second security agent based on the link abnormality information.

Abstract: Systems and methods for provisioning real-time three-dimensional maps, including: at a first processing stage: updating a three-dimensional map of an environment based on received point cloud data; extracting three-dimensional proposals of objects of the environment; projecting the three-dimensional proposals onto a two-dimensional image of the environment; generating two-dimensional proposals of the objects of the environment; at a second processing stage: detecting the objects of the environment from the two-dimensional image of the environment; generating two-dimensional bounding boxes of the objects of the environment; matching the two-dimensional bounding box with a particular two-dimensional proposal of the two-dimensional proposals; and labeling, for each two-dimensional proposal that is matched to a two-dimensional bounding box, the three-dimensional proposal corresponding to the two-dimensional proposal with semantic information associated with the two-dimensional bounding box that is matched to the

Abstract: A power coupler includes an input end assembly and an output end assembly separably coupled to the input end assembly. The input end assembly includes an input end base including a slot, a sealing cover arranged at the input end base, an input conductive member arranged at the input end base and connected to an external power supply, and a self-locking structure. The sealing cover is movable between a closing position to cover a slot port of the slot and an opening position to at least partially open the slot port. The self-locking structure is switchable between a locked state to limit the sealing cover from moving towards the opening position and an unlocked state to not limit the sealing cover. The output end assembly includes an output conductive member configured to extend into the slot and be connected to the input conductive member.

Abstract: A DC voltage coordination control method is applied to a multi-terminal VSC-HVDC power transmission system or a VSC-HVDC power grid system. When a lower-level control is used in the active power control mode, the active power reference value of the converter is generated according to the converter DC voltage and the converter DC voltage active power curve; it also includes an upper-level control to adjust the control mode and active power setting value of the lower-level control to ensure the steady-state performance of the system. This method has low dependence on communication, avoids the problem that the fixed slope and margin cannot meet all operating conditions, and is suitable for large-scale VSC-HVDC systems, and has scalability.

Abstract: Systems and methods for transmitting, within a time slot, i) first eMBB resource blocks to a first UE and ii) second eMBB resource blocks to a second UE; during transmission of the first and the second eMBB resource blocks to the first and the second UE, respectively, at a first scheduled check point: identifying i) first URLLC resource blocks to be transmitted to a third UE and ii) second URLLC resource blocks to be transmitted to a fourth UE; identifying i) a first transmission deadline for transmitting the first URLLC resource blocks to the third UE and ii) a second transmission deadline for transmitting the second URLLC resource blocks to the fourth UE; generating a transmission queue for the first URLLC resource blocks and the second URLLC resource blocks; and selecting, based on the transmission queue, the second URLLC resource blocks for transmission to the fourth UE.

Abstract: A repairing method for an array substrate is provided. The array substrate includes at least one defective signal line, which is a data line or a gate line having a breakpoint. The defective signal line is divided by the breakpoint into a first portion and a second portion. The repairing method includes disconnecting a connection between a first thin film transistor and a data line or a gate line to which the first thin film transistor is connected, the first thin film transistor being a thin film transistor closest to the breakpoint among thin film transistors connected to the first portion; electrically connecting a first terminal of the first thin film transistor to the first portion; and taking a common electrode line segment from a common electrode line to which the first pixel electrode corresponds as a repair line.

Abstract: A method for microphone selection, applied in a mobile device having at least two microphones, the method includes: transmitting, by using an ultrasonic transmitter of the mobile device, first ultrasonic waves within a testing box, wherein the first ultrasonic waves are transmitted with a predefined transmission strength and at different frequencies selected from a predefined frequency range; acquiring, by using each of the at least two microphones to receive second ultrasonic waves reflected from the first ultrasonic waves within the testing box, frequency response values of the second ultrasonic waves received by each of the at least two microphones; and determining one of the at least two microphones which has a highest frequency response value, as a microphone for receiving ultrasonic waves for the mobile device.

Abstract: Disclosed is a method for extracting IP information in a TEM response of a grounded-wire source, comprising the following steps: 1) obtaining subsurface resistivity through inversion of a vertical magnetic field less influenced by an IP effect; 2) obtaining an electric field response not influenced by the IP effect based on forward modeling of the obtained underground electrical structure; 3) removing the influence of the IP effect on an observed response to obtain a pure IP response; and 4) inverting the obtained IP response to obtain IP information of polarizability, a frequency dependence, and a time constant. The method of the present invention provides a new idea for further extracting IP information in a TEM response.

Abstract: A coordinated control method for series voltage source converter valve groups comprises: allocating a total direct-current voltage reference value or a total active power reference value at the end where a direct-current electrode series voltage source converter valve group is located according to the total number of voltage source converter valve groups in series; for a direct-current voltage control end, controlling the direct-current voltage of each valve group according to the assigned direct-current voltage reference value for each valve group; for an active power control end, controlling the active power of each valve group according to the assigned active power reference value for each valve group and based on adding the active power compensation amount of the valve group which has voltage equalization effects on the valve group. Correspondingly, also providing a coordinated control device for series voltage source converter valve groups.

Abstract: Disclosed is a solar cell, including: a substrate; an emitter, a first passivation film, an antireflection film and a first electrode sequentially disposed on an upper surface of the substrate; a tunneling layer, a retardation layer, a field passivation layer, a second passivation film and a second electrode sequentially disposed on a lower surface of the substrate. The retardation layer is configured to retard a migration of a doped ion in the field passivation layer to the substrate. The retardation layer includes a first retardation sub-layer overlapping with a projection of the second electrode and a second retardation sub-layer misaligning with a projection of the second electrode, and at least the second retardation sub-layer is an intrinsic semiconductor. A thickness of the first retardation sub-layer is smaller than a thickness of the second retardation sub-layer in a direction perpendicular to the surface of the substrate.

Abstract: Provided is a superconducting coil having a spiral structure for a current limiter. The coil includes: a first superconducting tape, a second superconducting tape, and an insulating isolation layer, where the first superconducting tape and the second superconducting tape have spiral structures, an end of the first superconducting tape at a spiral center is connected to an end of the second superconducting tape at the spiral center, the instating isolation laser is filled between the first superconducting tape and the second superconducting tape, and a spacing between the first superconducting tape and the second superconducting tape gradually increases from the spiral center to an outer spiral periphery.

Abstract: Provided is an organic light-emitting material. The light-emitting material is a series of metal complexes containing a ligand(s) based on isoquinoline which is substituted with deuterium at 3- and 4-position and a ligand(s) based on acetylacetone. The compounds can be used as the light-emitting material in an emissive layer of an organic electroluminescent device. These novel compounds can provide better device performance. Further provided are an electroluminescent device and a compound combination including the light-emitting material.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for enhanced preparation and integration of data sets. In some implementations, data indicating user input that identifies a first data set that includes streaming data and a second data set that includes non-streaming data is received. The first data set and the second data set are integrated to generate a hybrid data set. The data processing system provides access to the hybrid data set through a (i) non-streaming access channel that provides a periodically-refreshed summary of both the streaming data and the non-streaming data and (ii) a streaming access channel that provides a data stream based on combined data of the first data set and the second data set. One or more application programing interfaces are provided. The one or more application programming interfaces allow at least one client device to access the non-streaming access channel and the streaming access channel.

Abstract: A fastening device, a method of operating the fastening device, and a display panel are provided. The fastening device includes a diffuser and a limiter, wherein the limiter includes a deformation portion and a non-deformation portion disposed opposite to each other to enclose a receiving portion, and the diffuser is configured to be received in the receiving portion, so as to adjust a deformation size of the deformation portion by movement of the diffuser.