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919 results about "Computational analysis" patented technology

Social network aware pattern detection

ActiveUS20070226248A1Highly-scalable and computationally efficientDigital data processing detailsDigital computer detailsGraphicsPattern matching
Enabling dynamic, computer-driven, context-based detection of social network patterns within an input graph representing a social network. A Social Network Aware Pattern Detection (SNAP) system and method utilizes a highly-scalable, computationally efficient integration of social network analysis (SNA) and graph pattern matching. Social network interaction data is provided as an input graph having nodes and edges. The graph illustrates the connections and / or interactions between people, objects, events, and activities, and matches the interactions to a context. A sample graph pattern of interest is identified and / or defined by the user of the application. With this sample graph pattern and the input graph, a computational analysis is completed to (1) determine when a match of the sample graph pattern is found, and more importantly, (2) assign a weight (or score) to the particular match, according to a pre-defined criteria or context.
Owner:NORTHROP GRUMMAN SYST CORP

Face detection in digital images

A method and apparatus for the detection of faces in a digital image captured under a variety of lighting conditions are provided. Rather than subjecting an entire image to computationally intensive face detection analysis, the image is subjected to computationally simply analysis to identify candidate pixels likely to be of skin colour. Only those pixels having such color are subject to computationally intensive face detection analysis. The pixels are selected by first selecting a color distribution model based on an image capture condition provided with the color digial image. Then, the color of the pixels is tested using the distribution model to determine those pixels having predominantly skin color. Preferably, the distribution model is selected from among a number of different distribution models with each of the distribution models associated with a different set of lighting conditions. In this way, a face detection process may accommodate a variety of lighting conditions associated with the capture of an image using a computationally simple analysis.
Owner:CANON KK

Ab initio generation of single copy genomic probes

Single copy sequences suitable for use as DNA probes can be defined by computational analysis of genomic sequences. The present invention provides an ab initio method for identification of single copy sequences for use as probes which obviates the need to compare genomic sequences with existing catalogs of repetitive sequences. By dividing a target reference sequence into a series of shorter contiguous sequence windows and comparing these sequences with the reference genome sequence, one can identify single copy sequences in a genome. Probes can then be designed and produced from these single copy intervals.
Owner:ROGAN PETER K

Method for real-time visualization of BGP analysis and trouble-shooting

The present invention comprises a multi-tier system. Major goals of the system are to 1) clearly visualize BGP dynamics and alert/report important deviation of BGP dynamics to avoid overwhelming the operators with too much information and 2) analyze the root cause of the problems by using a multi-tier approach, with a light-computational analysis and high-level classification for a real-time problem identification followed by a more rigorous off-line analysis for a further and more detailed trouble shooting. An example embodiment is provided that comprises four modules. The first module comprises a distributed family of collectors in charge of collecting real-time network information. The second module filters out non-relevant prefixes and extracts and profiles key features of the network information. The third module monitors BGP activity from both an Internet-AS and single-AS perspectives by displaying the data in real time and highlighting major shifts or divergence from historical baselines with comprehensive layouts. The forth module is run off-line to focus on a few relevant events that are selected through the first three modules. This is usually a time-consuming phase of the process due to the different temporal and/or spatial correlation that must be run across several sets of data. During this phase, the system can spend more time to better identify the real cause of the problem.
Owner:THE BOEING CO

RNA sequencing and analysis using solid support

The present invention provides methods for the sequencing of all RNA species within an RNA sample, such as the RNA content obtained from a cell, a tissue, a living organism, or from an artificial source. RNA molecules within the samples are labeled in a RNA-specific manner prior to immobilization on a solid support. One label is used to mark the location of the RNA molecule on the solid support, whereas the second label is used to mark selectively the S′ end of full-length mRNA molecules. RNA molecules are sequenced while being bound to the solid support in one or more sequencing reactions, and sequences of individual RNA molecules can be forwarded to computational analysis for assembling sequence information from individual sequencing reads obtained from the same location on the solid support. Not only unsupervised expression profiling on a genome-wide scale, but also the direct analysis of RNA-RNA interactions become possible as revealed by the analysis of the sequencing information obtained along with genomic information.
Owner:DNAFORM +1

Methods and Apparatus for Electrical Stimulation of Tissues Using Signals that Minimize the Effects of Tissue Impedance

A tissue stimulation system that generates an electrical tissue stimulation signal configured to reduce tissue impedance and increase depth of signal penetration. The use of leads is dynamically controlled and altered between conducting biopotential voltages, conducting electrical tissue stimulation signals, and grounding, in response to a computational analysis of biopotential data acquired from a region of tissue to be stimulated.
Owner:HARGROVE JEFFREY B

Control and observation of physical devices, equipment and processes by multiple users over computer networks

A method and system for enabling multiple users from different physical locations to access, observe, control and manipulate physical processes and devices over a computer network such as the Internet is disclosed. A user may visually monitor the physical set up and state of an experiment or environment by receiving live video and data, as well as directly control instrumentation while receiving live feedback regarding the input commands. Measurement data may be collected into a database and computational analysis can be generated and displayed as a physical process is being performed. An online interactive laboratory notebook is also provided that manages items such as collected data, laboratory parameters, “to do” lists, personal notes, etc.
Owner:WESTERN DIGITAL TECH INC

Active metric learning device, active metric learning method, and program

A metric application unit receives data under analysis having a plurality of attributes and a metric indicative of the distance between the data under analysis, calculates the distance between the data under analysis, and output and stores a data analysis result which is generated from an analysis on the data under analysis with a predetermined function, using the calculated distance between the data under analysis. A metric optimization unit generates side-information based on an indication of feedback information entered from the outside and including either similarities between the data under analysis, or the attributes, or a combination thereof, generates a metric which complies with a predetermined condition, based on the generated side information, and stores the generated metric in a metric learning result storage unit.
Owner:NEC CORP

Line loss lean comprehensive management system and method

The invention relates to a line loss lean comprehensive management system and a line loss lean comprehensive management method. Relevant line loss data dispersed at automation systems are integrated so as to establish a uniform line loss databank and eliminate line loss information isolated island. The data is read on line so as to calculate the line loss, and the conventional line loss calculation is changed into on-line statistics and calculation from afterwards statistics and calculation, so that the real-time property in line loss analysis is enhanced. The line loss situation of an electric power bureau is calculated in the overall angle, the calculation and analysis on the line loss cover all voltage grades of a power grid, and the comprehensiveness and the completeness in line loss calculation and analysis are ensured. By adopting the on-line calculation mode, the situation that in the past the calculation and analysis can only be carried out on typical days is changed, the line loss analysis does not change along with the change of the season and the external environment any longer, the calculation result is more accurate and real, the situation that in the past only the line loss result is singly and roughly analyzed is changed, the working cost is lowered, and the working efficiency is improved.
Owner:STATE GRID SHANDONG ELECTRIC POWER

Transmission line malfunction visualized report method and system based on Web and GIS

The invention discloses a transmission line malfunction visualized report method and system based on a Web and a GIS. The system comprises a web server side (1), a switch (2) and a client side (3). The web server side (1) is used for acquiring transmission line malfunction information, locating a malfunction to a specific tower, and providing Web services by combining a satellite map. The switch (2) is used for enabling the web server side (1) and the client side (3) to be connected. The client side (3) is used for visualized displaying of the transmission line malfunction. After electric transmission lines of a power grid break down, the system is triggered to work, the Web service side locates the malfunction tower position and generates an XML file after malfunction information computational analysis, and provides Web services to the client side (3) to carry out visualized displaying of the malfunction information. According to the transmission line malfunction visualized report method and system based on the Web and the GIS, the transmission line malfunction information is displayed visually in real time, the visual cognition degree of power transmission network malfunctions is improved, the capacities that power enterprise personnel display important information in a large amount of power system data and monitor the states of the power grid can be improved, and the reliability of the system is guaranteed.
Owner:STATE GRID CORP OF CHINA +1

Large steam turbine-generator set rotor crack fault real-time diagnosis method

The invention discloses a large steam turbine-generator set rotor crack fault real-time diagnosis method belonging to the filed of mechanical vibration state monitoring and fault diagnosis. Necessary computational analysis and judgment for vibration data are carried out by collecting the vibration signal of a rotor shaft of a steam turbine. The shaft vibration base frequency vibration amplitude and double frequency vibration amplitude at both sides of the rotor are computed in real time and the shaft vibration base frequency vibration amplitude is validated in real time so that the shaft vibration base frequency vibration amplitude at any side of the rotor is judged whether to be larger than vibration amplitude threshold value. Combined with least square method and product-moment correlation coefficient calculating method, real-time quantitative computational analysis, such as incremental validation of the shaft vibration base frequency vibration amplitude and incremental validation of double frequency vibration amplitude of shaft vibration, is carried out on the vibration data of shaft vibration base frequency. Based on the quantitative computational analysis and combined with each verification result, on-line diagnosis of the generator set whether to have rotor crack fault is automatically carried out in real time. The method has the advantages of scientific method and reliable conclusion, and on-line monitoring and fault diagnosis can be automatically realized in real time.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Evaluation method for fatigue damage and service life of horizontal axis wind turbine blade

The invention discloses a test method for the fatigue damage and the service life of a horizontal axis wind turbine blade, aiming to obtain a more exact blade fatigue performance parameter by adopting a test detection and computational analysis means having low cost and high efficiency so as to meet the requirements of blade design, research and development and detection. The method is characterized in that on the basis of the characteristic that the impeller speed of a horizontal axis wind turbine is lower, and the period change frequency of various fatigue loads is also lower, a series of steps of carrying out static loading testing on the wind turbine blade to obtain a stress / strain amplitude distribution condition under the effect of various fatigue loads and analyzing by combining a material property curve and a cumulative damage theory are adopted to realize the evaluation to the blade fatigue performance. Compared with the traditional horizontal axis wind turbine blade fatigue testing technology, the method has the advantages of short period, low cost, capability of obtaining a final service life parameter of the blade, and the like.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

True stress-true strain computation model and test system

InactiveCN101319977AAccurate performance characteristics of mechanical behaviorExpress mechanical behavior characteristicsSpecial data processing applicationsStrength propertiesVisual technologySoftware system
The invention researches the substantive characteristics of material deformation to aim at the practical problem of measuring real stress-real strain and discloses a real stress-real strain calculating model and a practical testing system: 1, based on the analysis on the deformation of a tension specimen, taking a unit body the special part of which is provided with characteristics as the object for the stress-strain analysis, building a unique full-deformation unit model, firstly solving the theory analysis problem of real stress-real strain, establishing a theory foundation and building a novel real stress-real strain calculating formula: Sigma i is equal to 4Fi / Pi d<2>I and Epsilon is equal to (d<2>0 / d<2>i) minus 1; 2, adopting a machine visual technology and an image processing method to develop a practical software system and a practical hardware system that are compatible with the machine visual technology and the image processing method, and realizing the direct non-contact real stress-real strain measuring in real meaning; 3, the testing system includes a light source (1), CCD camera (2), an image acquisition card (3), a data acquisition card (4) and a material testing machine (5); 4,the software includes image capturing program, load data acquisition program and comprehensive calculation analysis program.
Owner:HARBIN INST OF TECH

Transformer area line loss calculation method based on correlation analysis and data mining

The invention discloses a transformer area line loss calculation method based on correlation analysis and data mining. The transformer area line loss calculation method selects the characteristic index data with greater influence as the input of the deep belief network by comparing and analyzing the influence of the electrical characteristic indexes of different transformer areas on the line lossrate of the transformer areas, carries out training by distinguishing different types of transformer areas by using a clustering algorithm respectively so as to mine the complex incidence relation between the input parameters and the transformer area line loss rate, and finally, generates a transformer area line loss prediction model which is rapid and efficient in calculation and relatively highin result accuracy, so that the transformer area line loss is calculated and analyzed by utilizing the model, and the problems that an existing transformer area line loss calculation method cannot accurately and effectively mine association of transformer area line loss influence factors, the calculation working efficiency and accuracy are low and the like are solved.
Owner:GUANGDONG POWER GRID CO LTD +1

Method for splicing and integrating models in real-time simulation system of large power system

The invention belongs to the field of simulation and computational analysis on power systems, particularly relating to a method for splicing and integrating models in a real-time simulation system of a large power system. The method is characterized in that the online calculating data of an intranet is reserved completely, an extranet is supplemented with offline data, and through integrating an offline model (which is not consistent in time and space) with online data, integrated data which is complete in modeling and consistent with the actual conditions of the power system can be provided in seconds or minutes. The method comprises the following steps: firstly, splicing and checking the online data, and carrying out grandstream verification on the online data so as to judge whether the online data is available; then, on the basis of intelligently setting up an online / offline data mapping table, supplementing the equivalent part of the extranet in the online data with the corresponding offline data; and finally, after adjusting the boundary connection and boundary grandstream, carrying out topology analysis and grandstream calculation on the whole network, thereby obtaining a model which can be used for the calculation of a large real-time simulation system.
Owner:CHINA ELECTRIC POWER RES INST +2

Design method of seamless turnouts on elevated station of longitudinally, transversely and vertically coupled high-speed railway

ActiveCN101699449ADetailed structural designDetailed designSpecial data processing applicationsCouplingEngineering
The invention discloses a design method of seamless turnouts on an elevated station of a longitudinally, transversely and vertically coupled high-speed railway, belonging to the fields of railway engineering technology application and design. The design method comprises the following steps: by considering the factors of the structure of a bridge, the arrangement mode of supporting seats and the structure types of rails and considering the actual conditions of displacement coupling among towing points and the influence of the longitudinal displacement of steel rails on the transverse deformation of tongue rails, making a basic assumption; using three-dimensional beam elements to simulate the steel rails; establishing non-uniform beam elements according to the actual cross sections for tongue rails and point rails; modeling according to the actual cross section attributes for steel rails; and using a finite element method to complete corresponding computational analysis according to different working conditions of the seamless turnouts on the bridge. The invention really reflects the mutual coupling action of the bridge, the rails and the turnouts, obtains more accurate results, meets the actual conditions, has high efficiency and strong flexibility, is suitable for design and computational check of various seamless turnouts or turnout groups on the bridge, and provides a reliable tool for the design of the seamless turnouts on the bridge.
Owner:北京协同创新轨道交通研究院有限公司

System and method for structural analysis of indirect dry cooling tower

The invention relates to a power station indirect dry cooling system, and provides a system and a method for structural analysis of an indirect dry cooling tower based on APDL (ANSYS Parametric Design Language). The method comprises the following steps of: 1) according to geometric outside dimension of the indirect cooling tower, defining geometric parameters of the indirect cooling tower, and establishing a parameterized geometric model of the indirect cooling tower; 2) defining the unit type, real constants and material constants of the indirect cooling tower; 3) defining unit meshing size, performing self-adapting meshing division, and establishing a finite element model of the indirect cooling tower; 4) respectively applying parameterized loading for the indirect cooling tower under five loading working conditions (dead load, live load, wind load, temperature load and earthquake load) and performing computational analysis; and 5) performing combination of loading working conditions, and extracting computed results. Through the application of the system, the full process control of the indirect cooling tower from modeling to calculation can be realized. Meanwhile, the indirect cooling tower can be optimally designed by adjusting the value of each parameter. A large amount of repeated work is avoided, and the efficiency of structural analysis and design can be greatly improved.
Owner:DATANG BEIJING ENERGY MANAGEMENT
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