Abstract: The present invention relates to a learning-oriented transferable automatic driving method and system driven by a world model. The method includes the following steps: constructing a simulation environment; collecting a large batch of data in the simulation environment, and collecting a small batch of data in the real environment; constructing a world model, and performing model training in the simulation environment by using the large batch of data, wherein the world model takes a camera image as an input to model an environment by using a generative world model; storing and transmitting historical moment information by hidden variables, and outputting an aerial view and a control instruction; and performing domain adaptive transferring training in the real environment on the basis of the small batch of data, and deploying the model in an autonomous vehicle in the real world to achieve virtuality-to-reality transferring general integrated automatic driving.

Abstract: A cross-coupling control method for moving beam of gantry machine tool is disclosed, which relates to the technical field of CNC machine tool control. The cross-coupling control method includes: Step 1: establishing a crossbeam dynamics model considering a ram on the crossbeam, and at the same time simplifying the model for an observer design; step 2: realizing a PID control parameter adjustment of motors at both ends in accordance with a method of parameter tuning of a unilateral servo control system; using a servo system with the same control parameters to jointly drive the crossbeam up and down, realizing the synchronous control and realizing PID control parameter tuning for both end motors. The disclosure not only reduces the synchronization error caused by the torsion of the crossbeam, but also solves the synchronization error caused by the asymmetric load on both sides, and improves the system robustness and stability.

Abstract: Provided is a preparation method for a tube. The method comprises the following steps: a) adding a polymer solution into a poor solvent, such that the polymer diffuses on the liquid level of the poor solvent, so as to obtain a polymer film, wherein the solvent in the polymer solution is dissolved in the poor solvent; b) curling the polymer film on the liquid level of the poor solvent by using a mold to obtain a bar; and c) removing the mold to obtain a tube. The present invention further provides the use of the above tubular as an artificial tubular tissue.

Abstract: The present invention provides a closed-loop online self-learning framework applied to an autonomous vehicle, and belongs to the technical field of automatic driving. The closed-loop online self-learning framework includes five data closed loop links, including: an Over-the-Air Technology (OTA) closed loop, an online learning closed loop, an algorithm evolution closed loop, a self-adversarial improvement closed loop, and a cloud coevolution closed loop.

Abstract: A left atrial appendage (LAA) occluder includes a sealing portion and a fixing portion connected to the sealing portion, and one or more sealed seed sources encapsulated with radioactive particles. The sealed seed sources are arranged on the sealing portion and/or the fixing portion (20) and configured for forming an annular isolation band on an inner wall of an LAA after the radioactive particles are released. The annular isolation band is configured for blocking the electrical signal conduction between the LAA and a left atrium. In the LAA occluder, the annular isolation band is formed on the inner wall of the LAA by the release of the radioactive particles in the sealed seed sources arranged on the sealing portion and/or the fixing portion.

Abstract: Disclosed are techniques for relational database locks based on columns. Database transactions may be targeted to specific columns of one or more records, instead of the entire row for those records, using primary keys. Column locks on specific keys are stored separately than column locks on ranges of keys, which are both checked when requesting a new column lock for either a single key or a range of keys. When a threshold number of columns for a given record, or range of records/keys, have been locked, the column locks for that record, or range of records, can be combined into a single row level lock to reduce resource costs for maintaining multiple concurrent locks.

Abstract: A rendering method and a related device are disclosed, and may be applied to a scenario such as production of music or film and television works, or the like. The method may be performed by a rendering device, or may be performed by a component (for example, a processor, a chip, a chip system, or the like) of a rendering device. The method includes: obtaining a first single-object audio track based on a multimedia file, where the first single-object audio track corresponds to a first sound object; determining a first sound source position of the first sound object based on reference information; and performing spatial rendering on the first single-object audio track based on the first sound source position, to obtain a rendered first single-object audio track.

Abstract: The present disclosure provides improvements to adjustable optical mounts that increase the stability of the optical mount alignment while providing for the alignment to be easy adjusted. Various aspects of the present disclosure related to an optical mount for adjusting the position of an optical component, the optical mount comprising: a front plate comprising a front surface, a back surface, and a shaft, wherein the front surface is configured to support the optical component, and the shaft extends from the back surface of the front plate; and a base comprising a bore, wherein the bore is configured to receive the shaft of the front plate such that the front plate is configured to rotate around an axis of rotation of the front plate that is aligned with the shaft.

Abstract: Methods, computer program products, and systems are presented. The methods include, for instance: receiving a request for a lock on a page from a virtual database amongst two or more virtual databases, the virtual database including a number of containers respectively corresponding to the same number of database components of the virtual database. A copy of the page is refreshed with a latest copy of the page in an overall cache prior to granting the lock based on ascertaining that the page is not locked by any other virtual database. The virtual database is granted with the lock and have an exclusive access to the page.

Abstract: The present disclosure provides a method and apparatus for processing a streaming media service, an electronic device, and a storage medium, and relates to the technical field of computers, particularly to technical fields such as industrial vision, deep learning, streaming media, and information flow. A specific implementation solution involves: acquiring registration information of an input source, the registration information including process information of a streaming media service process of the input source and streaming media address information of the input source; enabling the streaming media service process according to the process information; and controlling, by using the streaming media address information, the streaming media service process to process streaming media data of the input source.

Abstract: A computer-implemented method for performing an operation in a tree structure is provided according to embodiments of the present disclosure. In the computer-implemented method, an operation to be performed in a tree structure may be received. The tree structure may comprise a plurality of non-leaf nodes and a plurality of leaf nodes. The operation may be associated with a record comprising a pair of key and value. One of the non-leaf nodes may be determined based on the key of the record. Then, the operation may be performed in the determined non-leaf node.

Abstract: The present disclosure provides a display module and a display device, which belong to the field of display technology. The display module includes a display substrate, a flexible printed circuit board, and a near field communication antenna. The display substrate has a display region and a peripheral region; and at least a part of structure of the near field communication antenna is located in the peripheral region of the display substrate and on the flexible printed circuit board.

Abstract: A flexible guide vane structure of a mixed flow pump with adjustable flow area, a mixed flow pump and an adjustment method are provided. The flexible guide vane structure includes a flexible guide vane and a flexible guide vane adjusting device. The flexible guide vane adjusting device includes a support rib, a support rib base and a base driving mechanism. As the skeleton of the flexible guide vane, the support rib realizes the shape change of the flexible vane through the base driving mechanism and the support rib base. In the mixed flow pump, the flexible guide vane adjusting device is installed inside the blade hub. Through the flow section feedback regulation system, the angle of the support rib is adjusted based on the real-time working condition of the mixed flow pump to adjust the flow area of the blade and achieve the best working condition.

Abstract: A system, program product, and method for enhancing automatic multidimensional query processing. The method includes executing a database query including semi-joining a plurality of dimension tables with a fact table. The method also includes identifying for extraction one or more data values from each dimension table of the plurality of dimension tables. The data values from each dimension table of the plurality of dimension tables are associated with a respective record identification (RID), thereby defining one or more RIDs. The method further includes generating a plurality of RID lists. Each RID list of the plurality of RID lists includes a collection of the one or more RIDs for the respective dimension table. The method also includes merging the plurality of RID lists, sorting, subject to the merging, the plurality of RIDs as a function of data location, and fetching the data values from the fact table.

Abstract: This disclosure provides a method, a computing system, and a computer program product for managing prefetching of pages in a database system. The method comprises obtaining shared information associated with page access, wherein the shared information associated with the page access includes information associated with the page access from a plurality of computing nodes. The method further comprises determining whether to prefetch a number of pages into a global buffer pool based at least on the shared information associated with the page access using a sequential prefetching method.

Abstract: A method, system, and computer program product for providing data security through database map restructuring are provided. The method identifies related data tables within a set of data tables within a database. The method identifies a set of related data types within the related data tables. A set of similarities is determined among the set of related data types. The related data types are mapped based on the set of similarities. Based on the mapping, method restructures one or more data tables of the set of data tables to generate a restructured data table.

Abstract: A processor may allocate a first buffer segment from a buffer pool. The first buffer segment may be configured with a first contiguous range of memory for a first data partition of a data table. The first data partition comprising a first plurality of data blocks. A processor may store the first plurality of data blocks in order into the first buffer segment. A processor may retrieve the target data block from the first buffer segment in response to a data access request for a target data block of the first plurality of data blocks.

Abstract: Embodiments of the disclosure provide methods, systems, computer program products for manipulating a table with an XML column in database. According to the method, a SQL statement for a table is received first, wherein the table comprises an XML column which is a representation of a plurality of logical columns of the table, there is at least one XML element in at least one row and in the XML column of the table, and each of the at least one XML element corresponds to a non-null value in a specific row and in a logical column of the plurality of logical columns of the table. Then the SQL statement is parsed. And then the SQL statement is transformed into a hybrid statement being able to process the XML column in response to the parsing result indicating that the SQL statement relates to at least one logical column of the plurality of logical columns. At last the hybrid statement is executed.

Abstract: An approach is provided in which a method, system, and program product build a time series prediction model based on one or more relationships between a first set of keywords in a set of first news articles and a second set of keywords in a set of second news articles. The time series prediction model includes a time-based interest level adjustment corresponding to a publication time between the set of first news articles and the set second of news articles. The method, system, and program product use the time series prediction model to compute an inherited initial interest level of a third news article that includes a set of new keywords based on the set of new keywords and the time-based interest level adjustment. The method, system, and program product assign the inherited initial interest level to the third news article.

Abstract: Embodiments of the present disclosure describe an approach for database query processing with database clients. According to the approach, a first set of queries are obtained from a plurality of clients in communication with a database server. A second set of queries are generated by normalizing the first set of queries. A set of access paths corresponding to the second set of queries are determined for retrieving data from at least one of the plurality of clients and the database server. Data is retrieved from at least one of the plurality of clients and the database server based on the set of access paths.