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Guowei

Guowei Liu, Xinxiang City CN

Patent application numberDescriptionPublished
20100276039COPPER ALLOY, METHOD OF PRODUCING THE SAME, AND COPPER TUBE - Copper alloys, methods for producing copper alloys, and copper tubes are provided. The copper alloys include an alpha solid solution formed from phosphorous deoxidized copper and at least one trace element comprising tin. The content of tin ranges from about 0.1% to about 2.0% by weight of the copper alloy. The trace element can further include zinc in an amount from about 0.05% to about 1.0% by weight of the copper alloy. The copper alloys have an increased tensile strength due to the strengthening effect by the alpha solid solution formed by phosphorous deoxidized copper and tin as the trace element, and accordingly a copper tube made from the copper alloy has a significantly improved pressure resistance.11-04-2010

Guowei Liu, Beijing CN

Patent application numberDescriptionPublished
20080312899Software feature modeling and recognition - Described is a technology by which software program feature usage is located within a sequence of commands collected during program usage sessions. For example, feature generally corresponds to a series of commands, such as copy and paste. A visual modeling component is controlled via drag-and-drop operations to describe a feature model, which is then compiled by a compiler into a finite state machine. Noise models may be used to exclude any command in the sequence that is irrelevant to the feature usage. A recognition process uses the finite state machine to locate program feature usage within the sequence of recorded commands by matching command sub-sequences corresponding to the feature model via the state machine. An analyzer may then use the located matches to provide an analysis report on feature usage.12-18-2008
20080313149Analyzing software usage with instrumentation data - Described is a technology by which software instrumentation data collected from user program sessions are analyzed to output an analysis report or the like via example methods and an architecture configured for efficient operation. A client component queries a service for analysis related information. To process the query, the service works with a data manager, and via a high dimensional analysis component may use information processed from the software instrumentation data, such as in the form of one or more inverted indexes and/or raw value files. The service may include a usage analysis component, a feature recognition component that locates features from command sequences, a user recognition component and/or a program reliability component. One or more counterpart components at the client may generate analysis reports or the like based on the query results. The client also may maintain user libraries and feature libraries to facilitate analyses.12-18-2008
20080313184Multidimensional analysis tool for high dimensional data - Described is a technology by which high dimensional data may be efficiently analyzed, including by filtering, grouping, aggregating and/or sorting operations to provide an analysis result. For efficiency in the analysis, an inverted index may be built (e.g., as part of filtering), and/or a hash structure (e.g., as part of grouping). Analysis parameters specify dimensions, on which union and/or intersection operations are performed to provide a final dataset. The analysis tool provides a user interface for inputting analysis parameters and outputting information corresponding to an analysis result. The analysis tool may sort the information corresponding to the analysis result, e.g., to output the topmost or bottommost results.12-18-2008
20080313633Software feature usage analysis and reporting - Described is a technology for analyzing usage of a software program's features. Software instrumentation data is during actual user program usage sessions. The collected data is then processed to determine various feature usage counts and other information, cross-feature usage (e.g., among users who use a feature, how many use another feature or program), and characteristics of feature users, e.g., how long, how much, how often and how extensive feature users use a program. Session analysis may be performed to provide information about the number of sessions in which a set of features occur. Feature usage trends over time may also be determined via analysis. A user interface is described for facilitating selection of one or more features to analyze, for facilitating selection of a group of users, and/or for outputting results corresponding to the analysis.12-18-2008

Guowei Liu, Bejing CN

Patent application numberDescriptionPublished
20080313213Efficient data infrastructure for high dimensional data analysis - Described is a technology by which high dimensional source data corresponding to rows of records with identifiers, and columns comprising dimensions of data values, are processed into a file model for efficient access. An inverted index corresponding to any dimension is built by mapping data from raw dimension values to mapped values based on mapping entries in a dimension table. The record identifiers are arranged into subgroups based on their mapped value; a count and/or an offset may be maintained for locating each of the subgroups. The raw values for a dimension are maintained within a raw value file. For sparse data, the raw value file may be compressed, e.g., by excluding nulls and associating a record identifier with each non-null. A data manager provides access to data in the data files, such as by offering various functions, using caching for efficiency.12-18-2008

Guowei Wang, San Jose, CA US

Patent application numberDescriptionPublished
20090161462CONTROLLING AC DISTURBANCE WHILE PROGRAMMING - A system and methodology that can minimize disturbance during an AC operation associated with a memory, such as, program, read and/or erase, is provided. The system pre-charges all or a desired subset of the bit lines in a memory array to a specified voltage, during an AC operation to facilitate reducing AC disturbances between neighboring cells. A pre-charge voltage can be applied to all bit lines in a block in the memory array, or to bit lines associated with a selected memory cell and neighbor memory cells adjacent to the selected memory cell in the block. The system ensures that source and drain voltage levels can be set to desired levels at the same or substantially the same time, while selecting a memory cell. This can facilitate minimizing AC disturbances in the selected memory cell during the AC operation.06-25-2009
20090273998BITCELL CURRENT SENSE DEVICE AND METHOD THEREOF - A memory device includes a sense amplifier to sense the state of a bitcell. The sense amplifier includes two input terminals connected via a switch. One of the input terminals is connected to a node, whereby a current through the node represents a difference in current drawn by a bitcell and a reference current. During a first phase, the switch between the input terminals of the sense amplifier is closed, so that a common voltage is applied to both input terminals. During a second phase, the switch is opened, and the sense amplifier senses a state of information stored at the bitcell based on the current through the node. By using the switch to connect and disconnect the inputs of the sense amplifier in the two phases, the accuracy and speed with which the state of the information stored at the bitcell can be determined is improved.11-05-2009
20100103732CONTROLLING AC DISTURBANCE WHILE PROGRAMMING - A system and methodology that can minimize disturbance during an AC operation associated with a memory, such as, program, read and/or erase, is provided. The system pre-charges all or a desired subset of the bit lines in a memory array to a specified voltage, during an AC operation to facilitate reducing AC disturbances between neighboring cells. A pre-charge voltage can be applied to all bit lines in a block in the memory array, or to bit lines associated with a selected memory cell and neighbor memory cells adjacent to the selected memory cell in the block. The system ensures that source and drain voltage levels can be set to desired levels at the same or substantially the same time, while selecting a memory cell. This can facilitate minimizing AC disturbances in the selected memory cell during the AC operation.04-29-2010

Patent applications by Guowei Wang, San Jose, CA US

Guowei Xu, Shanghai CN

Patent application numberDescriptionPublished
20080216132METHOD FOR ESTABLISHING A NETWORK PLATFORM FOR RENTING THE ELECTRONIC PUBLICATIONS - A method for establishing a network platform for renting the electronic publications adopts a grid algorithm, links to the Internet via various networks, and establishes the network platform having an information service grid character for renting the electronic publication. Three types of nodes are established in the information service grid: a first type of node is established as service domain owner and the administrator grid node; a second type of node is established as service provider grid node that is composed of the consumers of the electronic publication; and the third type of node is established as the service provider grid node which is composed of the publishers of the electronic publication; the three types of node provide the network information service by utilizing the grid computing mode and the SOAP. The service provider grid nodes can do online maintenance on the content of the electronic publication provided by them and collect the charge. And the service consumer grid nodes can obtain the service provided by the service provider nodes through the variant service paths, which are provided by the service domain owner and the administrator grid nodes, and pay the service fee.09-04-2008

Guowei Zhang, Beijing CN

Patent application numberDescriptionPublished
20080310598Method for calibrating dual-energy CT system and method of image reconstruction - A method for calibrating a dual-energy CT system and an image reconstruction method are disclosed to calculate images of atomic number and density of a scanned object as well as its attenuation coefficient images at any energy level. The present invention removes the effect from a cupping artifact due to X-ray beam hardening. The method for calibrating a dual-energy CT system is provided comprising steps of selecting at least two different materials, detecting penetrative rays from dual-energy rays penetrating said at least two different materials under different combinations of thickness to acquire projection values, and creating a lookup table in a form of correspondence between said different combinations of thickness and said projection values. The image reconstruction method is provided comprising steps of scanning an object with dual-energy rays to acquire dual-energy projection values, calculating projection values of base material coefficients corresponding to said dual-energy projection values based on a pre-created lookup table, and reconstructing an image of base material coefficient distribution based on said projection values of base material coefficients. In this way, images of atomic number and density of an object as well as its attenuation coefficient images can be calculated from the images of the distribution of base material coefficients. Compared with the prior art technique, the method proposed in the present invention has advantages of simple calibration procedure, high calculation precision and invulnerability to X-ray beam hardening.12-18-2008