Abstract: A method for forming holes to form holes in a surface of a metal part includes: putting the metal part into a first solution as an anode; applying a first voltage on the metal part to form the first holes in a surface of the metal part; and cleaning and drying the metal part with the first holes. The first solution comprises a first organic solvent, chloride, and a phosphoric acid compound. The disclosure also provides a metal product and a metal composite.

Abstract: Freeform fabrication of architected porous zinc via 3D printing. Ink including zinc powders, solvents and binders is created with printability. At least one 3D model is created with microarchitectures. Extrusion-based direct-writing is used to manufacture free-standing 3D zinc structures. Post-processing conditions generate final architected porous zinc products.

Abstract: Aldehyde generation includes providing a first input stream, a second input, and an alkene substrate to a reactor system. The first input stream includes a catalyst, a ligand, and an organic solvent. The second input stream includes a mixture of carbon monoxide (CO) and hydrogen gas (H2). The alkene substrate is in either gaseous form or liquid form, the liquid form of the alkene substrate being provided with the first input stream, the gaseous form of the alkene substrate being provided with the second input stream. The reactor system includes a first reactor and a second reactor, where the second reactor is gas permeable and positioned within the first reactor.

Abstract: An image processing method and apparatus, a device, and a non-transitory computer-readable storage medium are provided. In the method, a first feature map is obtained based on feature-encoding of an original image. A second feature map of the original image is obtained based on the first feature map. The second feature map includes noise information to be superimposed on the original image. A third feature map of the original image is obtained based on the first feature map. The third feature map includes different feature values. Each feature value represents a relative importance of an image feature at a position corresponding to the respective feature value. A noise image is generated based on the second feature map and the third feature map.

Abstract: A cross-site scripting (XSS) risk analysis method based on a Bayesian network and a STRIDE model includes: constructing an XSS attack-related STRIDE threat model of a network information release system; obtaining a network structure of a Bayesian network-based XSS attack risk analysis model based on the STRIDE model; obtaining prior probabilities of all nodes in the network structure of the Bayesian network-based XSS attack risk analysis model based on expert experience and a node ranking algorithm; obtaining a training dataset through simulation by using a rejection sampling algorithm or a direct sampling method; performing network training on the network structure of the Bayesian network-based XSS attack risk analysis model by using the training dataset to obtain the Bayesian network-based XSS attack risk analysis model; and reasoning a Bayesian network to obtain a quantitative analysis result of an XSS attack risk of the network information release system.

Abstract: An impact shield for earthquake protection is described herein. The impact shield may include a canopy constructed of a puncture-resistant material, the canopy defining a first internal volume accessible via a first opening, the canopy being structured to form a semispherical shape when in an inflated state, the semispherical shape defining a space dimensioned for sheltering at least one human body; a support joined to the canopy and constructed of the puncture-resistant material, the support defining a second internal volume accessible via the first opening and a second opening, the support located within the space, the support structured to form a column when in the inflated state; and a fitting joined to the support for closing the second opening to fix the first internal volume and the second internal volume after inflation of the support and the canopy.

Abstract: A hinge is mountable between two casing parts of a flexible electronic device, and includes a base seat and two rotating modules disposed at two sides of the base seat for respectively mounting the casing parts thereon. Each rotating module includes a primary support plate pivotably connected to the base seat, and a secondary support plate pivotably connected to the primary support plate. When the rotating modules are rotated from an initial position, where the secondary support plates are flush with the primary support plates for resting and supporting a flexible display thereon, to a terminal position, where the secondary support plates are turned away to provide a leeway, the casing parts are shifted from an unfolded state to a folded state.

Abstract: An additive manufacturing apparatus includes an additive manufacturing print head and a nozzle that receives a bio-based shape memory polymer material and a bio-based material. The nozzle extrudes the bio-based shape memory polymer material and the bio-based material onto a substrate to form a bio-based shape memory polymer part or product.

Abstract: Disclosed are a network traffic analysis method and a device based on multi-source network traffic data. The method includes: deploying a pre-training classifier pool in a network stream data source; receiving multi-source network stream data at a current moment for each data source, classifying the multi-source network stream data through an online classifier, performing feature processing and transformation on data collected by each network stream data source at each preset time interval, and transmitting processed traffic data features and a feature transformation matrix to a traffic drift detection module. The traffic drift detection module contains historical concept data to detect a concept drift according to the traffic data features, the feature transformation matrix and the historical concept data; if the concept drift is detected, the online classifier deployed by multiple sources is reset. This method is used for continuous real-time and accurate analysis of the multi-source network traffic data.

Abstract: Embodiments of the present disclosure provide methods and devices for formatting a database. The method can include clustering, into each block, a set of sequence of elements from each column of a database; generating a file storing one or more blocks having the clustered set of sequences of elements; providing a first table storing file schema information that associates the elements with the file; and providing a second table for storing block schema information that associates the columns with the one or more blocks.

Abstract: The present disclosure provides an electrolyte additive, an electrolyte and a lithium ion secondary battery containing the same. The electrolyte additive has a structure of Formula (1), wherein R1 is hydrogen, a phenyl, a cyano group, an alkyl cyano group or a C1 to C6 alkyls, and each of R2 to R5 is independently selected from hydrogen or a C1 to C6 alkyl. By means of the electrolyte additive, the electrolyte and the lithium ion secondary battery containing the same of the present disclosure, a technical effect of improving electric performance of the lithium ion secondary battery at high voltage and high temperature is achieved.

Abstract: A titanium alloy product includes a titanium alloy substrate and a plurality of first holes defined in a surface of the titanium alloy substrate. The first holes have an opening on the surface of the titanium alloy substrate and an inner wall connecting with the opening, a diameter of the inner space is greater than a diameter of the opening. The product tensile strength of bonding between the titanium alloy product and a material part filled in the first holes is very high. A housing with the titanium alloy product and a method for manufacturing the titanium alloy product are also disclosed.

Abstract: A hinge is mountable between two casing parts of a flexible electronic device, and includes a base seat and two rotating modules disposed at two sides of the base seat for respectively mounting the casing parts thereon. Each rotating module includes a primary support plate pivotably connected to the base seat, and a secondary support plate pivotably connected to the primary support plate. When the rotating modules are rotated from an initial position, where the secondary support plates are flush with the primary support plates for resting and supporting a flexible display thereon, to a terminal position, where the secondary support plates are turned away to provide a leeway, the casing parts are shifted from an unfolded state to a folded state.

Abstract: The present disclosure provides systems and methods for prefetching data in databases. One method for prefetching data in a database comprises receiving a database query on the database, determining one or more sets of adjacent columns access by the database query, and for each set of adjacent columns of the one or more determined sets, prefetching data in the adjacent columns.

Abstract: The present disclosure relates to an electrical energy storage apparatus. The apparatus has an interpenetrating, three dimensional periodic structure formed from an ionically conductive solid electrolyte material having a plurality of interpenetrating, non-planar channels. The interpenetrating, non-planar channels are made up of a first plurality of channels filled with an anode material, a second plurality of channels adjacent the first plurality of channels and interpenetrating with the first plurality of channels, and filled with a cathode material, and a third plurality of channels adjacent to, and interpenetrating with, one of the first and second pluralities of channels, and filled with a material to form a separator. The first, second and third channels form a spatially dense, three dimensional structure. A first non-flat current collector layer is incorporated which is in communication with the first plurality of channels, and which forms a first electrode.

Abstract: A method for forming holes to form holes in a surface of a metal part includes: putting the metal part into a first solution as an anode; applying a first voltage on the metal part to form the first holes in a surface of the metal part; and cleaning and drying the metal part with the first holes. The first solution comprises a first organic solvent, chloride, and a phosphoric acid compound. The disclosure also provides a metal product and a metal composite.

Abstract: The present disclosure provides a method for generating a classification model in a database system. The method comprises generating a plurality of database tables by performing data clustering on a database, acquiring a plurality of queries associated with information from the database, generating training data by executing each of the plurality of queries on the plurality of database tables, and training a classification model using the training data, wherein the classification model is used to select a database table for a query based on corresponding performance information associated with the query on the database during executing of the query. The present disclosure also provides a method for executing a query on a database using a classification model. The method comprises obtaining the classification model, obtaining a database query, generating a target table by inputting the database query into the classification model, and executing the database query on the target table.

Abstract: The present disclosure relates to an electrical energy storage apparatus which forms an interpenetrating, three dimensional structure. The structure may have a first non-planar channel filled with an anode material to form an anode, and a second non-planar channel adjacent the first non-planar channel filled with a cathode material to form a cathode. A third non-planar channel may be formed adjacent the first and second non-planar channels and filled with an electrolyte. The first, second and third channels are formed so as to be interpenetrating and form a spatially dense, three dimensional structure. A first current collector is in communication with the first non-planar channel and forms a first electrode, while a second current collector is in communication with the second non-planar channel and forms a second electrode. A separator layers separates the current collectors.

Abstract: Efficient large column values storage in columnar databases is disclosed, including: providing a database comprising a write storage, a read storage, and an auxiliary storage, and wherein the auxiliary storage is used to store a large column value of a row that is associated with either the write storage or the read storage, wherein the large column value comprises a column value that meets a set of large column value criteria; and operating the database using the write storage, the read storage, and the auxiliary storage.

Abstract: Embodiments of the present disclosure provide methods and devices for inserting data in a database. The method can include caching one or more rows of data in a delta table in response to a request to insert the one or more rows in a destination table, wherein the destination table is one of a group of destination tables of a first database, and wherein the delta table contains requested changes of rows of the destination table, the changes being caused by a data operation; determining a priority of the destination table based on runtime information of the destination table relative to the group of destination tables; and scheduling the merging of the inserted rows from the delta table to the destination table based on the determined priority of the destination table. The destination table is in a format of a file storing one or more blocks, each block having a set of sequence of elements clustered from each column of the destination table.