Abstract: Disclosed are a power consumption reduction circuit for Graphics Processing Units (GPUs) in a server and a server. The power consumption reduction circuit includes a frequency reduction control chip. The frequency reduction control chip, after receiving an overpower alarm signal generated by a Power Supply Unit (PSU), generates a frequency reduction control signal to a Power Break (PWRBRK) pin of each GPU so as to start a frequency reduction operation of each GPU. It can be seen that, in the present application, an underlying hardware circuit is directly used for implementation with relatively quick responses and without intervention of an operating system, whereby the whole frequency reduction operation of the GPU may be completed within 5 ms, and the PSU is prevented from triggering overpower protection within relatively short time. Therefore, loss of service data of a user caused by an exceptional power failure of the server is avoided.

Abstract: A method for evaluating the reliability of a sealing structure in a multi-failure mode based on an Adaboost algorithm. The Adaboost algorithm is adopted to carry out a classification iterative training on the seal ring failure related data of a small sample until a classification error of set classifier meets a precision requirement; then the failure probability of the sealing structure is calculated under the fluctuation condition of related parameters by adopting the important sampling method, and further the reliability of the sealing structure is evaluated in the multi-failure mode. The present invention solves the problems of long time consumption and complex calculation process of reliability evaluation in multi-failure mode of the complex structure.

Abstract: A power supply management device includes an internal power supply circuit, switches, a comparator circuit, and a control circuit. The internal power supply circuit is configured to output a first supply voltage to a node. The switches are coupled between the node and a plurality of first circuits. The comparator circuit is configured to compare a voltage on the node with a reference voltage when the node does not receive the first supply voltage to generate a flag signal. The control circuit is configured to determine whether the node receives a second supply voltage from an external power supply circuit according to the flag signal. If the node receives the second supply voltage, the control circuit is further configured to turn off the internal power supply circuit and gradually turn on the switches, in order to provide the second supply voltage to the first circuits via the switches.

Abstract: The present disclosure provides a high-performance data lake system and a data storage method. The data storage method includes the following steps: S1: converting a file into a file stream; S2: converting the file stream into an array in which multiple subarrays are nested; and S3: converting the array into a resilient distributed dataset (RDD), and storing the RDD to a storage layer of a data lake. The present disclosure provides a nested field structure, which lays the foundation for parallel processing in reading, and effectively improves read performance. Furthermore, the present disclosure flexibly generates a number of nested subarrays according to hardware cores, such that the data lake achieves better extension performance, and can keep optimal writing efficiency for different users.

Abstract: Disclosed are a case, a battery cell, a battery, and an electrical apparatus. The case includes a case body and a pressure relief structure, the case body accommodates an electrode assembly, and the pressure relief structure included a plurality of first pressure relief grooves disposed at intervals on the case body along the circumferential direction of the case body. The case body ruptures along the first pressure relief grooves when the pressure or temperature inside the case body reaches a threshold to release the pressure inside the case body. During a pressure relief process, even if one of the first pressure relief grooves is shielded, the case body can still rupture along other first pressure relief grooves, so as to ensure the normal pressure relief of the case body, reduce the risk of fire and explosion of the battery cell, and improve the safety of the battery cell.

Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a casing wherein the battery is placed, a cooling plate located below the casing in a height direction, and a bracket assembly located below the cooling plate in a height direction and fixedly connected to the casing, the bracket assembly is used for direct contact with a mounting plate of the electric vehicle. When the battery pack of the present disclosure is used in an electric vehicle, since the bracket assembly separates the cooling plate from the mounting plate of the electric vehicle, the cooling plate does not need to directly exchange heat with the mounting plate, thereby reducing the influence of the temperature of the mounting plate on the cooling plate, and increasing the cooling or heating efficiency of the cooling plate to the battery inside the casing.

Abstract: A method and an apparatus for extracting a skill label, and a method and an apparatus for training a candidate phrase classification model are provided. The method for extracting the skill label includes obtaining a plurality of words by performing word segmentation on a sentence to be extracted, and determining a multi-dimensional feature vector of each word; extracting a candidate phrase from the sentence to be extracted; determining a multi-dimensional feature vector of each word in the candidate phrase according to the multi-dimensional feature vector of each word; generating a semantic representation vector of the candidate phrase according to the multi-dimensional feature vector of each word in the candidate phrase; and extracting the skill label from the sentence to be extracted based on the semantic representation vector of the candidate phrase.

Abstract: The present disclosure relates to a battery pack and an apparatus using the battery pack as a power supply, and relates to the technical field of batteries, to optimize performance of the battery pack. The battery pack includes a box body, a battery module, a module electrical connection piece, and a first protecting assembly. The battery module is mounted in the box body, and the battery module includes an anti-explosion assembly. The module electrical connection piece is mounted on the battery module. The first protecting assembly is mounted in the box body and is configured to protect the module electrical connection piece when an ejecta discharged from the anti-explosion assembly impacts the module electrical connection piece. The above technical scheme reduces probability of secondary short circuit of the battery pack.

Abstract: Provided herein is a nucleic acid extraction and the structure of a reaction chamber is improved such that a piston, a reaction chamber and a magnetic rod are independent of one another, magnetic beads are more concentrated, more sufficient adsorption, washing and elution are achieved, dead corners are eliminated, when the nucleic acid extraction and amplification device is used to perform nucleic acid extraction and amplification. The sensitivity and accuracy of nucleic acid detection can be further improved, and missing and wrong detection can be avoided.

Abstract: A connection member includes a guide plate and a first connecting plate integrally formed on the guide plate. The first connecting plate is disposed in a bendable manner relative to the guide plate, and at least one indentation is present between the first connecting plate and the guide plate. A portion, of the guide plate except a part corresponding to the at least one indentation, connected to the first connecting plate becomes gradually thinner in a direction from the guide plate to the first connecting plate.

Abstract: A rechargeable battery includes a battery core, a connection member, and a gasket. The connection member includes a guide plate and a first connecting plate integrally formed on the guide plate and connected to a tab of the battery core. The first connecting plate is disposed in a bendable manner relative to the guide plate, and at least one indentation is present between the first connecting plate and the guide plate. The gasket is fastened to the first connecting plate and the tab. The tab is sandwiched between the first connecting plate and the gasket.

Abstract: A rechargeable battery includes a battery core and a connection member. The connection member includes a guide plate and a first connecting plate integrally formed on the guide plate and connected to a tab of the battery core. The first connecting plate is disposed in a bendable manner relative to the guide plate, and at least one indentation is present between the first connecting plate and the guide plate. The tab extends from a side of a core body of the battery core in a width direction. At least a portion of the guide plate protrudes, relative to the first connecting plate, towards the core body of the battery core to form a protrusion, and the protrusion abuts against the battery core.

Abstract: A method for community search is performed by an electronic device. The method includes: obtaining graph data to be processed, in which the graph data includes a plurality of nodes and a plurality of connection edges between the nodes; determining a query node from the plurality of nodes based on the graph data, and determining a target community to which the query node belongs by performing a community search for the query node, in which the target community includes the query node, and at least one node other than the query node in the plurality of nodes; and determining the query node and performing the community search for the query node repeatedly until the community to which each node included in the graph data belongs is determined.

Abstract: Provided herein is a nucleic acid extraction and the structure of a reaction chamber is improved such that a piston, a reaction chamber and a magnetic rod are independent of one another, magnetic beads are more concentrated, more sufficient adsorption, washing and elution are achieved, dead corners are eliminated, when the nucleic acid extraction and amplification device is used to perform nucleic acid extraction and amplification. The sensitivity and accuracy of nucleic acid detection can be further improved, and missing and wrong detection can be avoided.

Abstract: A method and apparatus for converting a picture into a video, and a device and a storage medium. The method for converting a picture into a video includes: partitioning an original picture to obtain a foreground region and a background region; performing an iterative transformation for visual depth on the background region, and storing an image obtained through each transformation as a picture frame to obtain multiple frames of images; and splicing the multiple frames of images to obtain a target video. The iterative transformation includes at least two transformations for visual depth.

Abstract: An end cap assembly, a battery cell, a battery, and an electrical device are provided. The end cap assembly is applicable to a battery cell. The end cap assembly includes: an end cap body; a pressure relief component, connected to the end cap body, where a first through-hole configured to inject an electrolytic solution is made on the pressure relief component, and the pressure relief component is configured to be actuated when an internal pressure of the battery cell reaches a threshold, so as to release the internal pressure of the battery cell; and a closing component, detachably disposed on the pressure relief component, where the closing component is configured to close the first through-hole.

Abstract: An electric sofa for recreational vehicle is provided with a sofa combined cabinet. The sofa combined cabinet includes a first sofa cabinet, a second sofa cabinet and a third sofa cabinet. The sofa combined cabinet is of U-shaped distribution. The third sofa cabinet is provided with a telescopic plate, the telescopic plate is located at one side of the third sofa cabinet close to the second sofa cabinet, the telescopic plate is provided with a telescopic plate driving device fixed on the floor of the recreational vehicle. The third sofa cabinet is provided with a sofa cabinet driving device. The bottom of the third sofa cabinet is provided with a slide rail device, the telescopic plate is unfolded or contracted under the driving of the telescopic plate driving device, the third sofa cabinet is driven by the sofa cabinet driving device to move along the slide rail device.

Abstract: The present disclosure provides a cap assembly for a secondary battery, a secondary battery and a battery module. The cap assembly for the secondary battery includes a cap plate, a first electrode terminal, and a sealing member, wherein: the cap plate has an electrode lead-out hole; the first electrode terminal includes a first terminal board and a second terminal board connected with the first terminal board, wherein the first terminal board is located at a side of the second terminal board away from the cap plate, the second terminal board covers the electrode lead-out hole, and the material of the first terminal board and the material of the second terminal board have different base metals; the sealing member surrounds the electrode lead-out hole and is disposed between the cap plate and the first electrode terminal to seal the electrode lead-out hole.

Abstract: The present disclosure relates to a therapeutic apparatus including an MRI apparatus configured to acquire MRI data with respect to a region of interest. The MRI apparatus may include a plurality of main magnetic field coils coaxially arranged along an axis. The MRI apparatus may also include a plurality of shielding coils arranged coaxially along the axis. A current within at least one of the shielding coils may be in the same direction with a current within the main magnetic field coils.

Abstract: A cover assembly of a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a sealing part arranged between the gas exhaust valve and the cover plate and surrounding the gas vent for sealing a gap between the gas exhaust valve and the cover plate.