Abstract: The invention discloses a method, a system, a device, and a medium for detecting a battery state of health. The method includes extracting a target curve segment from a first charging characteristic curve of a battery under test; and determining, according to a corresponding relation between characteristic parameters of the target curve segment and the battery state of health, the battery state of health matching the characteristic parameters of the target curve segment, and determining the battery state of health as the battery state of health of the battery under test. By utilizing said corresponding relation as the calculation basis, the invention improves the reliability and accuracy of the detection of battery state of health detection. The invention also tracks instances of abusive conditions that accelerate battery aging, assessing whether such conditions accelerate battery degradation and issuing warnings accordingly.

Abstract: The invention discloses a method, a system, an electronic device, and a storage medium for determining performance of a power battery. The method includes the following steps: acquiring historical data of the power battery in at least two charging processes; determining, according to historical data in one charging process, a dQ/dV curve and a direct current internal resistance corresponding to said charging process; calculating a relative change rate of internal resistance capacity in any two charging processes; and determining the performance of the power battery according to the relative change rate of internal resistance capacity and a relative change rate of internal resistance capacity range corresponding to fault type. The invention can effectively determine whether the performance of the power battery is abnormal by combining, in the two charging processes, the target peak value of a dQ/dV curve of the power battery and the change in direct current internal resistance.

Abstract: Provided is a rectangular waveguide-to-microstrip in-phase high-isolation broadband power divider.

Abstract: Methods, systems, and devices for programmable chalcogenide capacitors are described. A first programming pulse may be applied, for a first duration, to a capacitor comprising a chalcogenide material to adjust a capacitance of the capacitor from a first capacitance to a second capacitance. A pulse may be applied to the capacitor based on applying the first programming pulse to the capacitor. A first voltage may be stored in the capacitor based on adjusting the capacitance of the capacitor from the first capacitance to the second capacitance, and the first voltage may be stored based on the capacitor having the second capacitance.

Abstract: Disclosed are a cluster quorum method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: acquiring a historical election set, and obtaining a first node quantity and a power condition by using the historical election set; generating a quorum parameter by using the first node quantity according to the power condition; acquiring a current network topology, and judging whether the current network topology satisfies the quorum parameter; and if the current network topology satisfies the quorum parameter, providing a cluster service. According to the method, a new network topology after a failure is not required to include the majority of nodes in an original cluster, whereby the network topology can continue to work no matter a quantity of nodes in the network topology while data consistency is ensured, improving viability of the cluster.

Abstract: A method to display an illustration to conduct an expedited electronic transaction is provided. Consumer identification information identifying a consumer is received. The consumer identification information is stored in association with a web browser of a consumer's device. A customized illustration is displayed based on the received consumer identification information on the consumer's device. A request is received for the expedited electronic transaction by swiping the customized illustration across a portion of the display of the consumer's device. Transaction data sufficient to complete the electronic transaction is sent to the merchant based on the swipe of the customized illustration across display of the consumer's device.

Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.

Abstract: A node synchronization method and apparatus, an electronic device, and a computer-readable storage medium, include: acquiring node data sent by each slave node; obtaining a target cluster parameter from each piece of node data, and obtaining a standard cluster parameter by using the target cluster parameter based on an event queue length; determining an authorized slave node according to the standard cluster parameter, and judging whether a quantity of authorized slave nodes is greater than a quantity threshold; and if the quantity is greater than the quantity threshold, performing event playback on the authorized slave node by using a cluster event based on the standard cluster parameter; or if the quantity is not greater than the quantity threshold, controlling the authorized slave node to perform status synchronization on an unauthorized slave node, and performing event playback on the authorized slave node by using a cluster event after status synchronization.

Abstract: A superconducting quantum chip includes a coupler and a controller. The coupler is configured to couple a first superconducting bit circuit and a second superconducting bit circuit. A frequency response curve of the coupler includes at least one phase inversion point, and the phase inversion point includes a resonance point or a pole of the frequency response curve. The controller is configured to adjust the frequency response curve of the coupler, so that an odd quantity of phase inversion points is included between a bit frequency of the first superconducting bit circuit and a bit frequency of the second superconducting bit circuit. The controller further adjusts a frequency of the phase inversion point, so that an equivalent interaction of cross-resonance effect of the first superconducting bit circuit and the second superconducting bit circuit is zero.

Abstract: A gate driver on array (GOA) circuit, an LCD panel, and a driving method are proposed. The GOA circuit includes a plurality of cascaded GOA units. Each of the GOA unit includes a pull-up control circuit, a pull-up circuit, a signal transmission circuit, a pull-down circuit, a pull-down holding circuit, a first bootstrap capacitor, and a second bootstrap capacitor.

Abstract: A nucleic acid extraction and fluorescent PCR detection system, comprising: an extraction strip, an extraction strip loading device for loading the extraction strip, a sample holder loading device for loading and unloading samples, an extraction strip transfer gripper for driving the extraction strip to move to a preset position, a nucleic acid extraction device for purifying the samples to obtain nucleic acids, a PCR detection device for performing fluorescent PCR detection on the nucleic acids, and a control device, wherein the extraction strip loading device, the sample holder loading device, the extraction strip transfer gripper, the nucleic acid extraction device and the PCR detection device are all connected to the control device. The problems of relatively poor flexibility and relatively low detection efficiency of a nucleic acid extraction and detection system can be ameliorated, so that a sample detection process is more flexible and convenient.

Abstract: A model construction method and an apparatus, and a medium and an electronic device are disclosed. The method is applied to a first participant platform, and includes: associating first configuration information pre-created by a first participant with second configuration information pre-created by a second participant; verifying the first configuration information; sending, to a second participant platform corresponding to the second participant, a second creation request for requesting the creation of the federated learning model, to cause the second participant platform to verify the second configuration information creating a first model task on the basis of a first parameter corresponding to the first configuration information; and performing co-training on the basis of the first model task and a second model task, to obtain the federated learning model.

Abstract: A reactive navy to black dye composition comprises component A and component B. Component A is one or more selected from the group consisting of dye compounds of formula (I) and alkali metal salts thereof, and component B is one or more selected from the group consisting of dye compounds of formula (II) and alkali metal salts thereof, based on component A and component B, component A has a mass percentage of 5% to 50%, and component B has a mass percentage of 50% to 95%. The present invention also provides a reactive navy to black dye product comprising the reactive navy to black dye composition. The reactive navy to black dye composition and dye product thereof with properties such as good fastness to washing, high degree of fixation and good build-up, which is suitable for printing and dyeing of nitrogen-containing and/or hydroxyl-containing fiber materials and blended fabrics thereof.

Abstract: The present invention discloses a model-free optimization method of process parameters of injection molding to solve the problems of frequent tests required and performing adaptive adjustment on different parameters in the existing optimization method. The method need not build a surrogate model between a product quality index and a process parameter to render the process parameter to converge nearby the optimal solution by an on-line iteration method. The present invention calculates the gradient direction of a current point by an iterative gradient estimation method, and uses adaptive moment estimation algorithm to allocate an adaptive step for each parameter. The method can significantly reduce the cost and time required in the process parameter, which greatly helps improving the optimization efficiency of process parameters of injection molding.

Abstract: A dredging device for dredging a pipe is provided including: a carrying frame, adapted to connected to a pipe; a shaking dredging unit including a first shaking plate and a second shaking plate, and the first shaking plate and the second shaking plate are arranged within the pipe; and a driving unit, connected to the carrying frame. The driving unit is connected to the first shaking plate and the second shaking plate for driving the first shaking plate and the second shaking plate to reciprocate to approach or move away from each other.

Abstract: A reactive dye compound and preparation method and application thereof. The reactive dye compound is a compound of the following formula (I) or an alkali metal salt thereof, in formula (I), D1 and D2 are each independently the group of the following formula (a) or (b). The reactive dye compound is capable of applying in printing and dyeing of cellulosic fibers, polyamide fibers or their fabrics. The reactive dye compound of the present invention has a novel structure, good washing fastness and rubbing fastness, and good fiber-bonding stability, and are suitable for dyeing and printing of fibers such as cotton, rayon, silk, viscose, and wool.

Abstract: Disclosed are a cluster quorum method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: acquiring a historical election set, and obtaining a first node quantity and a power condition by using the historical election set; generating a quorum parameter by using the first node quantity according to the power condition; acquiring a current network topology, and judging whether the current network topology satisfies the quorum parameter; and if the current network topology satisfies the quorum parameter, providing a cluster service. According to the method, a new network topology after a failure is not required to include the majority of nodes in an original cluster, whereby the network topology can continue to work no matter a quantity of nodes in the network topology while data consistency is ensured, improving viability of the cluster.

Abstract: Database systems and methods are provided for identifying a change associated with an update to executable code resulting in test failure. One method involves calculating risk scores for different changes associated with the update based on change characteristics associated with the respective changes, identifying a change from among the different changes associated with the update based on the risk scores associated with the respective changes, generating a modified update to the executable code that includes the identified change and excludes remaining changes of the update from the modified update, and initiate execution of one or more tests with respect to a compiled version of the modified update to the executable code. When execution of the one or more tests against the modified update results in a test failure, the change is identified as a potential root cause of the test failure associated with the update.

Abstract: A node synchronization method and apparatus, an electronic device, and a computer-readable storage medium, include: acquiring node data sent by each slave node; obtaining a target cluster parameter from each piece of node data, and obtaining a standard cluster parameter by using the target cluster parameter based on an event queue length; determining an authorized slave node according to the standard cluster parameter, and judging whether a quantity of authorized slave nodes is greater than a quantity threshold; and if the quantity is greater than the quantity threshold, performing event playback on the authorized slave node by using a cluster event based on the standard cluster parameter; or if the quantity is not greater than the quantity threshold, controlling the authorized slave node to perform status synchronization on an unauthorized slave node, and performing event playback on the authorized slave node by using a cluster event after status synchronization.

Abstract: Disclosed is Bacillus altitudinis and application of an active substance compound solution and a microbial inoculum thereof in control of root-knot nematode disease, where Bacillus altitudinis AMCC 101084 has been deposited at China General Microbiological Culture Collection Center (CGMCC, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, China) on Aug. 16, 2018 with deposit number CGMCC No. 16308. The microbial inoculum of the present invention has a significant control effect on root-knot nematodes.