Abstract: A method implemented by a communication system, including at least a first electronic device and a second electronic device, includes that the first electronic device plays multimedia content. The first electronic device sends first synchronization information through broadcast, so that the second electronic device receives the first synchronization information, where the first synchronization information includes at least a first address, and the first address is an obtaining address of the multimedia content. In response to a preset operation, the first electronic device establishes a near field wireless communication connection to the second electronic device, and the second electronic device caches the multimedia content based on at least the first address. The first electronic device sends a control instruction to the second electronic device by using the near field wireless communication connection. The second electronic device plays the multimedia content based on the control instruction.

Abstract: The present disclosure provides a semiconductor structure and a method of forming the same. The semiconductor structure includes: a substrate doped with a first ion, a deep trench structure disposed in the substrate, a barrier doped region disposed on a top of the substrate and the deep trench structure, a first epitaxial layer disposed on the barrier doped region, a body region disposed in the first epitaxial layer, a source region disposed in the body region, a gate structure disposed in the first epitaxial layer, and a collector region disposed at a bottom of the substrate. By means of the semiconductor structure, performance of an insulated gate bipolar transistor can be improved.

Abstract: An elevator car door locking device and elevator equipment. The car door locking device includes a vane base provided with a first and a second rotation center; a vane assembly provided with a clamping vane or an expanding vane; and a vane drive assembly having a driving member, a transmission member, an unlocking member and a car door locking hook. The driving member, the transmission member and the vane assembly are hinged to the first rotation center, the car door locking hook is hinged to the second rotation center, the transmission member is hinged with the vane assembly through a connecting shaft, and the unlocking member is hinged to a third rotation center on the driving member and is provided with a limiting part for limiting the connecting shaft.

Abstract: Support for distributed database backtracking, in which the database is reverted or iteratively reverted to a previous state, is provided. Log sequence number ranges and storage offset ranges for use in reconstructing the previous state are determined and used in the reconstruction. Clock sampling records can be generated indicating a feasible backtracking window with time points indicating allowable times to which backtracking can be performed. Appropriate log records, snapshots and checkpoints for database states are identified and organized with backtracking information record and timeline. A minimal and necessary set of log records, snapshots and checkpoints enabling database reconstruction within a time window is maintained. Measures are taken to maintain the necessary data to support backtracking even after prior backtrackings have occurred in the backtracking time window.

Abstract: The present invention belongs to the technical field of chemical drugs, and specifically to a compound with a-glucosidase inhibitory activity and application thereof. 5-hydroxymethyl-8-methyl-2-(N-arylamino)-pyrano[2,3-c]pyridine-3-(N-aryl)-formamide series compound is provided, possessing a structure in General formula (I). Compared with compounds with anti-diabetes activity in general sense, the compound with the strong anti-diabetes activity of the present disclosure has the apparently more important application value.

Abstract: A method of incorporating a bloom filter (BF) into cost-based bottom-up query optimization includes: receiving a query including a request to join at least two data tables that include a first data table and a second data table; generating, in response to the request, at least two query plans that includes a first query plan including subplans to: create the BF based on the second data table, apply the BF to the first data table for filtering data of the first data table before the first data table is joined with another data table, and join the first data table with the another data table; submitting the at least two query plans to a cost-based bottom-up optimizer to obtain a target query plan; and providing, as a response to the received query, a set of data that is retrieved from a data retrieval system by executing the target query plan.

Abstract: An optical connector includes an optical waveguide device with a first optical port and a fastening structure. The optical waveguide device is able to implement splitting, combining, demultiplexing, multiplexing, multi core-single core conversion, filtering, reflection, spot size conversion, optical path connection/disconnection, optical path direction conversion, or optical power adjustment. The fastening structure is configured to fasten an optical transmission medium. The first optical port is aligned with and connected to the optical transmission medium in the fastening structure.

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 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: Disclosed are a display apparatus and a method. The method includes: in response to detecting that an external device is connected via an external device interface of the display apparatus, obtaining SPD data from the external device; reading device identification information from the SPD data; in response to the device model being found in a device management list pre-stored in the display apparatus, switching a version of the transmission protocol to a version of the transmission protocol matched with the device model stored in the device management list; in response to the device mode being not found in the device management list, detecting a tag for indicating a new version function; in response to the tag for indicating the new version function being detected, switching the version of the transmission protocol to the first version; otherwise, switching the version of the transmission protocol to the second version.

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.