Abstract: A method of managing locks in a database is performed by a row lock manager of a database master. The method includes receiving, from a transaction executing on the database master, a row lock request for a row in the database. The row lock request includes a page in the database where the row is located. The row lock request also includes a row lock mode of sufficient strength to perform the transaction. Then, sending, to a page lock manager, a request for a covering lock of the page. The request specifies a page lock mode of sufficient strength to satisfy the row lock mode. Also, receiving, from the page lock manager, a grant of the page lock. The page lock includes information on row locks of rows located in the page. Then, granting, to the transaction, the row lock.

Abstract: A method of managing load in a database system includes receiving, by a compute node, from a page store, a log writing quota. Then, requesting, by a transaction of the compute node, a lock of a page to be modified by the transaction where the page is part of the page store including a plurality of pages and the transaction is configured to write a data amount to a log. Also, granting, by a lock manager of the compute node, the lock and determining, by the compute node, that the data amount exceeds the log writing quota. Furthermore, releasing, by the transaction, the lock, and throttling, by the compute node, the transaction until a criteria is fulfilled. Then, reacquiring, by the transaction, in response to the criteria being fulfilled, the lock, and writing, by the compute node, the data amount to the log.

Abstract: A display apparatus, and an image processing method. The display apparatus can include at least one processor and a display. The at least one processor is configured to execute instructions to cause the display apparatus to: obtain backlight values of all the partitions according to a video signal, and obtain, according to the backlight values of all the partitions, an image signal of an image to be displayed; send the backlight values of all the partitions to a partition backlight processing module, so that the partition backlight processing module obtains a backlight gain parameter according to the backlight values of all the partitions; and receive the backlight gain parameter returned by the partition backlight processing module, determine a compensation parameter according to the backlight gain parameter, and obtain a compensated image signal according to the compensation parameter and the image signal.

Abstract: The present disclosure discloses a human detection method and device, an electronic apparatus, and a storage medium. The method includes: a millimeter-wave radar signal of a target environment (101) is obtained; information of a moving point in the target environment (102) is extracted from the millimeter-wave radar signal; a micro-Doppler feature of each target in the target environment (103) is determined according to the information of the moving points in the target environment, wherein the target is formed by at least one moving point; and a target whose category is human in the target environment (104) is identified according to the micro-Doppler feature of each target in the target environment. The millimeter-wave radar technology is combined with artificial intelligence technology, so as to enable human detection in the target environment without invading human privacy, thus providing the possibility of achieving automatic control, monitoring and other operations of the target environment.

Abstract: Apparatus, systems, and methods for global consistency in distributed shared-data databases may be provided. According to an aspect a method may be provided for ensuring strong consistency in data retrieval. The method includes receiving, by a receiving node of a database, a query for a value of a data item in the database. The method may further include, requesting, by the receiving node, from each node of the plurality of nodes a latest timestamp corresponding to a latest transaction. The method may further include receiving, by the receiving node from said each node of the plurality of nodes, the latest timestamp. The method may further include managing, by the receiving node, a cache of the receiving node based on said each received latest timestamp. The method may further include reading, by the receiving node, the value of the data item.

Abstract: A tungsten-base alloy material and a preparation method therefor. The preparation method comprises: 1) evenly grinding composite powder containing tungsten and zirconium oxide, and then performing annealing treatment at 700-1000° C. to obtain powder A; and 2) grinding and then compression moulding the powder A, and then performing liquid-phase sintering to obtain a tungsten-base alloy blank so as to obtain the tungsten-base alloy material.

Abstract: A method for modifying a gliadin and an application thereof are provided. The method includes the following steps: dissolving the gliadin in a solvent to obtain gliadin solution; and adding a proline endoprotease to the gliadin solution for a reaction, and adjusting the pH value of solution to neutral according to a gradient, to obtain a modified gliadin. The modified gliadin obtained by the present invention may be uniformly dispersed in water, and may still maintain a uniform dispersion state in the water after high-temperature thermal sterilization and long-term storage, or even in the presence of sodium chloride, it has good thermal stability, salt resistance, and storage stability.

Abstract: A battery cell includes a housing having an inner cavity, a first side wall and a second side wall opposite to each other. The second side wall includes an explosion-proof hole. A first bottom support and a second bottom support are disposed in the inner cavity, support the electrode core, spaced apart from each other, and define a first gas channel. The second side wall support the first bottom support and the second bottom support. The explosion-proof hole communicates with the inner cavity through the first gas channel. A terminal post is disposed on a side wall of the housing other than the second side wall; An explosion-proof valve is mounted on the second side wall, and configured to cover the explosion-proof hole. An electrode core is disposed in the inner cavity, connected to the terminal post, and spaced apart from the explosion-proof hole.

Abstract: A battery cell (e.g., in a battery pack, or in a vehicle) comprises: a housing having an inner cavity, a first side wall, and a second side wall; a terminal post; an explosion-proof valve; and an electrode core. A first recess and a plurality of second recesses are arranged on an inner wall surface of the second side wall and are concave in a direction facing away from the inner cavity. The first recess forms a main air passage in the inner cavity. The plurality of second recesses form a plurality of branch air passages, separately communicating with the main air passage, in the inner cavity. The second side wall comprises an explosion-proof hole corresponding to a position of the main air passage. The explosion-proof valve is mounted on the second side wall. The electrode core is arranged in the housing and spaced apart from the explosion-proof hole.

Abstract: A battery cell, a battery pack and a vehicle. The battery cell comprises: a housing, which is provided with an inner cavity, and a first side wall and a second side wall, which are opposite each other, wherein an inner wall surface of the second side wall is configured to have a recess, which is recessed in a direction facing away from the inner cavity, the recess forms an air exhaust passage in the inner cavity, and the second side wall is provided with an explosion-proof hole, which corresponds to the air exhaust passage in terms of position; a terminal, which is arranged on a side wall of the housing other than the second side wall; an explosion-proof valve, which is mounted on the second side wall and is used for covering the explosion-proof hole; and an electrode core, which is arranged inside the housing and is spaced apart from the explosion-proof hole.

Abstract: The technology of this application relates to an optical-electrical co-package structure including a carrier circuit board, an optical-electrical conversion module, a package circuit board, and an electrical chip. The package circuit board and the optical-electrical conversion module are respectively located on a first side surface and a second side surface that are opposite to each other of the carrier circuit board. The electrical chip is disposed on the package circuit board, and the optical-electrical conversion module is separated from the package circuit board, to significantly reduce a size of the package circuit board, reduce processing difficulty and costs of the package circuit board, and reduce a loss of a high-speed signal transmission link.

Abstract: A battery includes a battery housing, an electrode core, lead-out plates, and conductive posts. The electrode core and the lead-out plates are connected to each other and disposed in the battery housing, and the conductive posts pass through the battery housing to connect to the lead-out plates. A relationship between a cross-sectional area slead in mm2 of the lead-out plates and a capacity C in Ah of the battery is 0<C/slead?15.

Abstract: An explosion-proof valve comprises an explosion-proof valve body. which is provided with score grooves, and the score grooves comprise two first score grooves, two second score grooves, and one third score groove. One end of each of the two first score grooves and one end of each of the two second score grooves are respectively connected to two ends of the third score groove. The other ends of the two first score grooves extend in a direction away from each other, and the other ends of the second score grooves extend in a direction away from each other. The explosion-proof valve body comprises an opening area. In the depth direction of the score grooves, the outer edge of the orthographic projection of the opening area is a predetermined opening boundary, and the area of the orthographic projection of the opening area is (I), wherein S?80 mm2, c?4 mm, and ??30°.

Abstract: In a rotating magnetic field-variable pyramid energy cabin, shielding plate permanent magnets are disposed on inner surfaces of three triangular shielding plates forming a pyramid shape, to form a stable magnetic field in the triangular shielding plates. A top rotating magnet is disposed at a top of the triangular shielding plates. A bottom rotating magnet is disposed below a seat. The magnetic field in the triangular shielding plates is rotated, to enable a vortex in turbulence of magnetic lines of force to generate a torsion field. The torque of the torsion field changes the spin states of electrons and atomic cores in a hypoxic microfield in the body of a patient, to arrange the electrons and atomic cores in a uniform magnetic field direction. The magnetic actuation of the electrons and atomic cores can make the microfield environment serialized and orderly and increase the negentropy.

Abstract: Disclosed are a method for controlling smart home and a device for controlling smart home. The method includes the following steps: a demand database and a habit database of a user for home appliances are built; according to the built demand database, demand models of different users are trained by using a neural network, and the demands of the users during different periods of time are predicted; and according to the built habit database and a prediction regarding the demands of the users, a home appliance execution policy conforming to the habits of the users are output by using a probability statistical algorithm, and the corresponding home appliances are controlled in advance.

Abstract: A method includes: when the electronic device performs data exchange with an application server through a Wi-Fi network and a cellular network, the cellular network is applied for by a first application and used by the first application and a second application that does not apply for the cellular network. When the first application is switched, as a last application that has applied for the cellular network and used the cellular network, from the foreground to the background for running, and does not generate application data for specific duration, a channel of the cellular network of the electronic device may be disconnected.

Abstract: Example optical connector ferrules and example optical connectors are provided. An example optical connector ferrule is a first ferrule of an optical connector, where the first ferrule includes n optical channels, and the first ferrule is configured to be compatible with a second ferrule. The second ferrule includes m optical channels, where both m and n are positive integers, and n is greater than m. The n optical channels of the first ferrule include first-type optical channels and second-type optical channels, where an arrangement manner of the first-type optical channels is the same as that of the m optical channels of the second ferrule, and at least one of the second-type optical channels is located in at least one of rows in which the first-type optical channels are located.

Abstract: A signal transmission structure includes a circuit board, a chip, and a cable assembly. The chip is assembled on one side of the circuit board, and the cable assembly is assembled on the other side of the circuit board. The cable assembly includes a cable, and the circuit board includes a plurality of conductive holes. The chip is electrically connected to the cable of the cable assembly using the conductive hole to transmit a signal of the chip using the cable.

Abstract: The disclosure belongs to the technical field of integrated navigation under non-ideal conditions, and in particular relates to a robust filtering method for integrated navigation based on a statistical similarity measure (SSM). In view of the situation that there are normal beam measurement information of the DVL and beam measurement information with a large error simultaneously in a SINS/DVL tightly integrated system, and aiming at the problem that the existing robust filters of an integrated navigation system process the measurement information in a rough manner and are likely to lead to loss of normal measurement information, the disclosure proposes a novel robust filtering method based on decomposition of multi-dimensional measurement equations and the SSM.

Abstract: A display apparatus, and an image processing method. The display apparatus can include at least one processor and a display. The at least one processor is configured to execute instructions to cause the display apparatus to: obtain backlight values of all the partitions according to a video signal, and obtain, according to the backlight values of all the partitions, an image signal of an image to be displayed; send the backlight values of all the partitions to a partition backlight processing module, so that the partition backlight processing module obtains a backlight gain parameter according to the backlight values of all the partitions; and receive the backlight gain parameter returned by the partition backlight processing module, determine a compensation parameter according to the backlight gain parameter, and obtain a compensated image signal according to the compensation parameter and the image signal.