Abstract: The disclosure proposes a method for remote upgrade and rollback of Unmanned Aerial Vehicle (UAV) software. The UAV includes a storage area and a UAV software upgrade module; and the storage area is divided into a main storage area, a backup storage area and a data area.

Abstract: Embodiments of the disclosure provide a cable connection structure, including: a bearing member, the bearing member being provided with at least one cable connector, and each cable connector having a first port connected to a cable and a second port electrically connected to the first port; and a sliding structure connected to the bearing member, the bearing member being configured to be connected to a single board through the sliding structure, the bearing member enabling the single board connected to the bearing member to slide in a first direction which is a direction close to or away from the second port. Embodiments of the disclosure also provide a single-board assembly and a single-board assembly connection structure.

Abstract: A pulse voltage conditioning method of a vacuum interrupter with automatic conditioning energy adjustment based on a trend of a breakdown voltage of the vacuum interrupter during a conditioning process. A current-limiting resistor and a parallel capacitor are automatically adjusted to ensure the conditioning energy reaching a critical value without deconditioning effect. The critical value refers to a maximum conditioning energy without damaging the electrode surfaces, namely an optimal conditioning energy, which can better remove insulation defects on the electrode surface and improve insulation performance of a vacuum gap. The problems of insufficient conditioning and deconditioning effect during conventional voltage conditioning process of the vacuum interrupter can be solved. Therefore, insulation strength of the vacuum interrupter can be raised to a higher level through conditioning.

Abstract: A system and method for securely defensing against a collusion attack under Internet of Vehicles (IoV) are provided. The present disclosure can repair a vulnerability, of a reputation system in the IoV, that the IOC attackers can manipulate a traffic-related message aggregation model (TMAM) by increasing their own reputation scores in an inside-and-outside collusion (IOC) manner. In addition, the present disclosure can detect IOC attacks quickly to improve the security of the IoV; can eliminate suspicious providers recursively and provide a reputation fluctuation association rule, to avoid overload of the TMAM; and can deprive IOC attackers of the opportunity to improve their reputation scores and ensure credible information in the IoV, to ensure the fairness and availability of the TMAM without the interference from the IOC attackers.

Abstract: A method for controlling an application state, an apparatus, a terminal device and a non-transitory computer-readable storage medium are disclosed. The method may include: unfreezing a target application currently to be called in response to a determination that the target application is in a frozen state and a current call meets an application unfreezing trigger condition.

Abstract: The present invention discloses a non-contact dynamic strain field measuring method and system for a rotating blade. The method includes the following steps: establishing a three-dimensional finite element model of a to-be-measured rotating blade, and extracting modal parameters of the three-dimensional finite element model; determining the number and axial mounting positions of blade tip timing sensors; constructing a conversion matrix of finite measuring point displacement and an overall strain field; and acquiring blade tip finite position displacement of the rotating blade based on the blade tip timing sensors, and acquiring, by a dynamic strain, dynamic strains of the rotating blade at any moment, on any position and in any direction based on modal processing of the conversion matrix.

Abstract: Provided are a method and device for acquiring grouping indication information. The method for acquiring grouping indication information includes: acquiring second-type grouping indication information, wherein the second-type grouping indication information comprises grouping manner indication information and information on resources in a group; determining a transmission parameter of a reference signal corresponding to the second-type grouping indication information according to the second-type grouping indication information; and transmitting the reference signal according to the transmission parameter; wherein a resource of the resources in the group comprises a transmission port resource, a transmission frequency domain resource, a transmission sequence resource and a transmission time domain resource.

Abstract: Embodiments of the present disclosure provide a radio frame transmission method, including: receiving a radio frame, and determining that the radio frame is a radio frame of a specified type and/or that the radio frame carries indication information indicating that reusing of the radio frame by a third party is disallowed, and maintaining a physical carrier channel detection state to be busy until the radio frame ends. Embodiments of the present disclosure further provide a wireless transmission apparatus and a computer storage medium.

Abstract: A bladder-type pressure tank includes an outer shell, a bladder, a nozzle, and an elbow pipe. The outer shell includes a liner and a glass-fiber layer covering the outer surface of the liner. The liner includes polyethylene (PE). The liner further includes a chamber, a first opening, and a second opening. The bladder is disposed in the chamber. In an inflated state of the bladder, a gap is formed between the inflated bladder and the inner surface of the liner. The bladder includes polyurethane (PU). The nozzle is integrated with the bladder, and is disposed in the first opening and seals the first opening. The elbow pipe includes a first end and a second end. The first end of the elbow pipe is disposed in the second opening and communicates with the chamber; and the second end of the elbow pipe is configured to connect to a pipeline.

Abstract: A fuse in form of breaking fusant by fusing breaking and mechanical breaking includes hollow shell; arc extinguishing medium filled in the shell; at least one piece of fusant arranged in the shell; and conductive terminals provided as penetrating through shell wall and capable to be connected to external circuit, two ends of the fusant are respectively connected with the conductive terminals, at least one breaking device that mechanically breaks the fusant is provided in the shell; driving device arranged outside the shell, after receiving external excitation signal, drives the breaking device to break the fusant in one of linear and rotational displacement modes or their combination; blocking structures are arranged between the breaking device and the shell wall; and the fusant located in the arc extinguishing medium is provided with weak positions where mechanical breaking strength of the fusant is reduced and fusing is easy to be achieved.

Abstract: The present disclosure provides an excitation fuse with a conductor and a fusant being sequentially broken, the excitation fuse comprising a housing and a cavity in the housing, wherein at least one conductor is provided to be inserted in the housing and the cavity and has two ends connected with an external circuit; at least one fusant is provided in parallel on the conductor; an excitation device and a breaking device are mounted in the cavity at one side of the conductor; the excitation device may receive an external excitation signal to act to drive the breaking device to sequentially form at least one fracture on the conductor and the fusant respectively; and at least one fracture on the conductor is connected in parallel with the fusant.

Abstract: The present disclosure relates to the technical field of wastewater treatment in oil and gas field operations, in particular to a method for synergistic degradation treatment of polysaccharide-containing polymer wastewater by controllable —OH radical. In this method, a ferrous ion solution, an alkaline solution, and an oxidant solution are mixed and heated to generate —OH radicals, —O radicals and polymeric iron ions, etc., which then is mixed with polysaccharide-containing polymer wastewater. The generated highly oxidative —OH radicals and —O radicals react with polysaccharide polymers so that they are degraded. The generated polymeric iron ions form flocs that purify the suspended solids in the wastewater. The purified polysaccharide-containing polymer wastewater can be re-injected or reused as an oilfield working fluid. In the present disclosure, the polysaccharide-containing polymer wastewater can be treated in a quick and efficient manner, and the treated wastewater can be recycled.

Abstract: Disclosed herein are a base having a storage function and a basketball stand comprising the base. The base includes a base housing internally provided with a cavity, wherein an upper portion of the base housing is recessed inwards to form a hemispheric basketball storage recess which is used for storing a basketball; and the bottom of the base housing is bilaterally symmetrically recessed inwards to form support frame storage grooves which are used for storing support frames. The basketball stand includes the base. The basketball is stored in the basketball storage recess, and the support frames are stored in the support frame storage grooves, thereby facilitating storage, avoiding losing of parts after dismounting, and facilitating usage.

Abstract: An apparatus includes a transistor coupled to a load through an output terminal of a load switch IC, a gate drive circuit connected to a gate of the transistor, wherein the gate drive circuit is configured such that in a short circuit event, a voltage on the gate of the transistor is gradually reduced, and wherein as a result of reducing the voltage on the gate of the transistor gradually, a negative voltage occurring at the output terminal of the load switch IC is minimized.

Abstract: A system for generating and receiving a polarization multiplexed single sideband signal is provided, which includes a light wave generating unit connected with a signal modulating unit and configured to generate a light wave; a driving signal generating unit connected with the signal modulating unit and configured to generate a driving signal; the signal modulating unit configured to split the light wave into two orthogonal polarized light waves, and modulate the driving signal on the polarized light waves to obtain a polarization multiplexed upper sideband optical signal and a polarization multiplexed lower sideband optical signal which are coupled to output a mixed signal, the mixed signal is transmitted to a separating and converting unit to obtain electrical millimeter wave signals; the electrical millimeter wave signals are transmitted through an MIMO wireless link to a signal sampling and processing unit to be converted into digital signals for digital signal processing.

Abstract: The present disclosure provides a computing method that is applied to a computing device. The computing device includes: a memory, a register unit, and a matrix computing unit. The method includes the following steps: controlling, by the computing device, the matrix computing unit to obtain a first operation instruction, where the first operation instruction includes a matrix reading instruction for a matrix required for executing the instruction; controlling, by the computing device, an operating unit to send a reading command to the memory according to the matrix reading instruction; and controlling, by the computing device, the operating unit to read a matrix corresponding to the matrix reading instruction in a batch reading manner, and executing the first operation instruction on the matrix. The technical solutions in the present disclosure have the advantages of fast computing speed and high efficiency.

Abstract: Disclosed is a liftable basketball stand, including a base, a backboard and a basket and further including a liftable support frame. A bottom of the liftable support frame is fixedly connected to the base, a top of the liftable support frame is fixedly connected to the backboard, and the basket is fixed to the backboard. The liftable support frame at least includes a first main support rod, a second main support rod and a connecting piece, wherein the first main support rod is sleeved inside the second main support rod, is movably connected to the second main support rod through the connecting piece and is capable of moving upwards or downwards relative to the second main support rod. The basketball stand disclosed by the present invention can be adjusted arbitrarily at different heights, so that the basketball stand features simple adjustment mode and high stability.

Abstract: An antenna array decoupling method, apparatus and system, and a non-transitory computer-readable storage medium are disclosed. The method may include: receiving predetermined digital domain signals of a plurality of channels, each of the plurality of channels being a data channel corresponding to a respective one of array elements in an antenna array 5 (S110); determining decoupling factors of channels involved in decoupling corresponding to each channel, the decoupling factors being factors which have been solved for beforehand according to measured in-array pattern information of each array element in the antenna array (S120); and processing the predetermined digital domain signals of the channels involved in decoupling corresponding to each channel according to the decoupling factors to obtain a 10 decoupled predetermined digital domain signal of each channel (S130).

Abstract: A method for tuning predictive control parameters of a building energy consumption system based on fuzzy logic: 1) constructing a controlled building energy consumption system, performing generalized predictive control on the building energy consumption system, and initializing an tuned parameter ? of a generalized predictive controller; 2) collecting the output slope yk (t), the actual output y(t), the set value yr(t) and the predicted output value ?(t+i) of the controlled building energy consumption system in the control process, and then taking them as fuzzy target parameters; 3) constructing a membership function for the fuzzy target parameters in step 2), and then optimally selecting the parameters of the fuzzy membership function by using a particle swarm optimization algorithm to obtain membership function parameters of each fuzzy target parameter; 4) carrying out fuzzy reasoning operation on the membership function parameters, and tuning the adjusted parameter ? by using the results of fuzzy reasoning

Abstract: Disclosed are a thermoelectric device and a manufacturing mold and manufacturing method thereof. The thermoelectric device includes at least one set of thermoelectric arm unit, wherein a first thermoelectric arm is provided with a first upper surface and a first lower surface opposite to the first upper surface; a second thermoelectric arm is provided with a second upper surface and a second lower surface opposite to the second upper surface; the second thermoelectric arm is seamlessly bonded with the first thermoelectric arm via an insulating adhesive layer; the first upper surface is flush with the second upper surface, and a first spacing groove is formed between adjacent positions of the first upper surface and the second upper surface; the first lower surface is flush with the second lower surface, and a second spacing groove is formed between adjacent positions of the first lower surface and the second lower surface.