Abstract: The present disclosure provides a method and system for calculating aerodynamic force of a wind turbine airfoil under different turbulence intensities. The method of the present disclosure includes: calculating a lift coefficient and a drag coefficient according to measured wind pressure, performing function fitting to obtain a fitted lift coefficient model and a fitted drag coefficient model at the different turbulence intensities, and selecting a corresponding fitted lift coefficient model and drag coefficient model according to a turbulence intensity on a wind turbine to be measured, to directly calculate a lift coefficient and a drag coefficient for the aerodynamic force of the airfoil.

Abstract: Disclosed are a method, a device and a medium for obtaining and providing access information of a wireless access point. The method comprises: searching for wireless access points to obtain identification information of one or more wireless access points; determining whether mobile data is available; if yes, sending an access information query request via mobile data, wherein the access information query request comprises the identification information of the one or more wireless access points; if no, sending a query request short message via a short message channel, wherein the query request short message comprises the identification information of the one or more wireless access points; receiving access information of the one or more wireless access points returned by a network device in response to the access information query request or the query request short message.

Abstract: A heat pump system, a heat management method and a vehicle are provided. The heat pump system includes an integrated heat exchanger integrated with a superconducting liquid flow passage and a refrigerant flow passage. The refrigerant flow passage is provided inside an on-board refrigerant circulation loop and is used for cooling and/or heating to adjust the temperature within a passenger compartment of a vehicle. The superconducting liquid flow passage is in communication with a motor heat dissipating conduit, for absorbing the heat generated by an on board motor and transferring the heat to the integrated heat exchanger by means of phase change heat transfer. The heat pump system can increase the energy utilization rate for the vehicle and reduce the allowable ambient temperature of the heat pump system.

Abstract: A programming building block includes an instruction reading building block and an instruction building block. The instruction reading building block reads command instructions in the instruction building block. The command instructions include an instruction for setting a mode, an instruction for setting a behavior in the mode, an instruction for setting a behavior, or an upgrade instruction. A priority is set between the plurality of instructions for setting the mode. Compared with the prior art, the present invention has the advantage that programming can be performed without an electronic display device.

Abstract: A shift register, a method for driving the shift register and a display apparatus are provided. The shift register includes a noise reduction control circuit and a pull-up node noise reduction circuit. The noise reduction control circuit is connected with a first clock signal terminal that receives a first clock signal, a gate drive signal output terminal that outputs a gate drive signal, a noise reduction control terminal, and a noise reduction control node. The pull-up node noise reduction circuit is connected with the noise reduction control circuit, the noise reduction control terminal, and a pull-up node.

Abstract: The present application discloses a road event detection method, an apparatus, a device and a storage medium, and relates to artificial intelligence, big data, intelligent transportation, automatic driving, and cloud computing technologies in data processing. A specific implementation is that: by obtaining road images collected and returned by multiple vehicles within a historical period, and performing image processing on single-frame road images to determine road events included in the road images, types and/or locations of the road events can be located accurately; further, by performing clustering on road event data of multiple frames of road images including the road events to obtain all road events occurring within the historical period and road event information, all road events occurring within the historical period can be determined accurately, and the types and/or the locations of the road events can be determined accurately, thereby improving the accuracy of road event detection.

Abstract: The present invention provides a paper ball-like graphene microsphere, a composite material thereof, and a preparation method therefor. Such paper ball-like graphene microspheres are obtained by chemically reducing graphene oxide microspheres to slowly remove oxygen-containing functional groups on the surface of the graphene oxide to avoid the volume expansion caused by rapid removal of the groups, thereby maintaining a tight bond between graphene sheets without separation; and removing the remaining small number of oxygen-containing functional groups and repairing defect structures in the graphene oxide sheets by means of high temperature treatment, such that the graphene structure becomes perfect at an ultrahigh temperature (2500 to 3000° C.), thereby further improving the bonding ability between the graphene sheets in the microspheres and achieving a dense structure.

Abstract: The invention discloses a waterless fiber dyeing method using supercritical carbon dioxide fluid as medium. Dry fibers are tightly loaded layer by layer in a porous yarn cage. After dyeing, the fibers are cleaned to remove unfixed dyes by an online way, thereby obtaining waterless dyed dry fiber products with good quality. With the supercritical carbon dioxide dyed by a dye, the invention can not only solve the problems of high energy consumption, high discharge, high pollution in the traditional dyeing process, but also obtain better dyeing effect. The invention has a simple process and convenient operation, which can effectively realize dry dyeing processing. The reaction is mild, avoiding the use of a large amount of water, heat and additives in high concentration, which has the features of being high efficiency and environmentally friendly.

Abstract: The present invention discloses a construction method of 3D printing and weaving integrated building, comprising: selecting basic building structural components, using finite element analysis after spatial modeling, and combining stress nephogram to set a discrimination domain value and optimize a structure space, obtaining a structural component skeleton; calculating and analyzing the structural component skeleton, determining a weaving range and weaving density of a wire according to weak areas and sizes under structural stress; and then determining a printing process and weaving process according to the structural component skeleton, the weaving range and the weaving density; preparing 3D printing material; 3D printing a matrix and weaving the wire according to the printing process and weaving process, constructing layer by layer, or printing segments, and then connecting segments by preset tenoning structural sections to form a 3D printing and weaving integrated building.

Abstract: A shift register, a method for driving the shift register and a display apparatus are provided. The shift register includes a noise reduction control circuit and a pull-up node noise reduction circuit. The noise reduction control circuit is connected with a first clock signal terminal that receives a first clock signal, a gate drive signal output terminal that outputs a gate drive signal, a noise reduction control terminal, and a noise reduction control node. The pull-up node noise reduction circuit is connected with the noise reduction control circuit, the noise reduction control terminal, and a pull-up node.

Abstract: The present invention discloses a graphene composite material and a preparation method thereof. By adding pleated graphene oxide microspheres and a catalyst to a precursor, the pleated graphene oxide microspheres are allowed to be highly dispersed and gradually disassociated into single-layer graphene oxide sheets during the process of polycondensation, the partially esterified molecules react with the hydroxyl and carboxyl group on the surface of graphene oxide sheets to form a chemical bond, and the graphene oxide is thermally reduced, to finally obtain a composite material comprising PET and graphene sheets having PET grated to the surface.

Abstract: An interactive toy includes a housing, a control module, a motor, a rotating shaft, and an external member. The rotating shaft is exposed outside the housing, and is connected to the external member. The control module is configured to control the motor to drive the rotating shaft to rotate. The toy further includes a measurement module and an analysis module. The measurement module is configured to measure an angle by which the rotating shaft rotates from an initial stationary state to the state in which its rotating speed reaches the maximum. The analysis module is configured to compare a preset reference angle with the angle by which the rotating shaft from the initial stationary state to the state in which the rotating speed of the rotating shaft reaches the maximum to determine whether the external member encounters an obstacle.

Abstract: A method for improving cycling performance of a battery includes, in a first stage, charging the battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value and in a second stage, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value. The second-stage voltage value is greater than the first-stage voltage value, and the second-stage current is less than the first-stage current.

Abstract: A method includes receiving first data and building a first model of a well based at least partially upon the first data. The method also includes receiving second data and building a second model including a network of flowlines based at least partially upon the second data. At least one of the flowlines is connected to the well. The method also includes combining the first model and the second model to produce a combined model. The method also includes calibrating the combined model to produce a calibrated model. Calibrating the combined model includes receiving measured data, miming a simulation of the combined model to produce simulated results, and adjusting a calibration parameter to cause the simulated results to match the measured data. The calibration parameter includes a productivity index of a fluid flowing out of the well. The method also includes updating the calibrated model to produce an updated model.

Abstract: A charging method is proposed to include the steps of: in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value; and in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value which is greater than the first-stage voltage value. The second-stage current is smaller than the first-stage current.

Abstract: Disclosed are a method, a device and a medium for obtaining and providing access information of a wireless access point. The method comprises: searching for wireless access points to obtain identification information of one or more wireless access points; determining whether mobile data is available; if yes, sending an access information query request via mobile data, wherein the access information query request comprises the identification information of the one or more wireless access points; if no, sending a query request short message via a short message channel, wherein the query request short message comprises the identification information of the one or more wireless access points; receiving access information of the one or more wireless access points returned by a network device in response to the access information query request or the query request short message.

Abstract: A method for changing filler pollutant accumulation of a constructed wetland belongs to the field of environmental protection engineering. A coupling device of a microbial fuel cell and a constructed wetland is constructed by using active carbon as a constructed wetland filler, and pond sewage enters into the constructed wetland from the top of the device in an intermittent mode. A titanium mesh is taken as an electron collector for packaging a cathode of the active carbon filler by using the characteristic that electrons are collected by the titanium mesh in a concentrated mode, after stable operation for a period of time, active carbon close to a water surface and active carbon close to the bottom of the titanium mesh are taken out for carrying out specific surface area and biomass measurement, and the accumulation distribution condition of filler pollutants inside the constructed wetland is analyzed.

Abstract: This application relates to distributed storage, and in particular, to a distributed shard storage technology. In a method for storing data shards in a distributed storage system, M data nodes on which to-be-stored data will be stored are determined, N replicas of the to-be-stored data are obtained, and each of the N replicas is sharded into X data shards in a same sharding mode. Then the to-be-stored data is stored on the M storage nodes, that is, N replicas of each of the X data shards are respectively stored on N storage nodes, and a quantity of data shards whose data shard replicas are stored on same N storage nodes is P or P+1, where P is an integer quotient of X divided by CMN.