Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

30 results about "Post-hoc analysis" patented technology

In a scientific study, post hoc analysis (from Latin post hoc, "after this") consists of statistical analyses that were not specified before the data was seen. This typically creates a multiple testing problem because each potential analysis is effectively a statistical test. Multiple testing procedures are sometimes used to compensate, but that is often difficult or impossible to do precisely. Post hoc analysis that is conducted and interpreted without adequate consideration of this problem is sometimes called data dredging by critics because the statistical associations that it finds are often spurious.

Query monitor playback mechanism for post-mortem performance analysis

A method, apparatus, article of manufacture, and a memory structure for monitoring an executed query comprising at least one execution thread is disclosed. The method comprises the steps of executing the query; and while executing the query, storing an execution trace record for each execution thread in at least one execution log file. The execution trace record comprises execution trace information including a thread ID and a time stamp for the execution thread. The execution trace information can be recalled from the execution log file and presented to a user after execution of the query to allow post mortem analysis of the query. The article of manufacture comprises a program storage device tangibly embodying instructions for performing the method steps described above. The apparatus comprises a data server for executing the execution thread and for storing an execution trace record for the executed execution thread, the execution trace record having execution trace information including a thread identifier and a time stamp; a query coordinator for storing an execution plan having a time stamp and for retrieving and synchronizing the execution trace record and the execution plan; and a client process for displaying the retrieved execution trace information to a user after execution of the query.
Owner:TERADATA US

Method for monitoring deviation of steel belt in annealing furnace

The invention relates to the field of deviation of steel belts in annealing furnaces, in particular to a method for monitoring deviation of a steel belt in an annealing furnace. A system for monitoring deviation of the steel belt in the annealing furnace comprises a camera, a monitor, a deviation control server, a multi-path video converter, an alarm and an input apparatus. The method for monitoring deviation of the steel belt in the annealing furnace comprises the following steps of: (1) setting a criterion of deviation of the steel belt; (2) acquiring image data; (3) converting RGB (Red, Green and Blue) image data into gray level image data; (4) processing the gray level image data, extracting the edge of the steel belt, and obtaining the profile of the steel belt; (5) selecting a template, and obtaining the position of the edge of the inner steel belt in the image through template matching positioning; and (6) judging whether to give an alarm. Through interception of in-furnace steel belt running ITV image data, the system effectively achieves a steel belt deviation image recognition function, can give an alarm in time when the steel belt deviates, and provides the basis for post hoc analysis on the reason of deviation of the in-furnace steel belt.
Owner:宝钢日铁汽车板有限公司 +1

Quality control method and device

The embodiment of the invention provides a quality control method and device. The quality control method and device solve the problems that the production process of products can only be analyzed afterwards, and production links cannot be controlled or analyzed in real time in the prior art. The method includes the steps that the quality control device acquires data parameters which are acquired by an acquisition device and obtained after to-be-controlled products pass equipment on a to-be-controlled product production line corresponding to the acquisition device; whether the acquired data parameters are located within a standard parameter value range corresponding to the acquisition device or not is judged, if not, the data parameters not located within the standard parameter value range corresponding to the acquisition device are counted, and if the number of the data parameters, not located within the standard parameter value range corresponding to the acquisition device, acquired by the acquisition device exceeds a preset threshold value, the equipment on the to-be-controlled product production line corresponding to the acquisition device is adjusted and controlled. By the adoption of the method, all the production links can be monitored and analyzed in real time, implementation is convenient, and application and popularization are easy.
Owner:杭州掌企科技有限公司

Power grid cascading fault diagnosis, early warning and evaluation system based on monitoring information

InactiveCN108830745ARealize centralized accessSolve the problem of discrete storageData processing applicationsInformation technology support systemInformation analysisEquipment monitoring
The invention belongs to the power grid technical field and relates to a monitoring information-based power grid cascading fault diagnosis, early warning and evaluation system. The system comprises apower grid cascading fault diagnosis subsystem, a power grid cascading fault early warning subsystem, and a power grid cascading fault evaluation subsystem; the power grid cascading fault diagnosis subsystem is used for the diagnosis query of power grid faults; the power grid cascading fault early warning subsystem is used for performing early warning analysis on the power grid faults; and the power grid cascading fault evaluation subsystem is used for evaluating power grid fault diagnosis and early warning information, and issuing an evaluation report. With the system of the invention adopted, the centralized access of related equipment information is realized; the problem of the discrete storage of different equipment related information can be solved; data source ends are standardized,so that equipment monitoring information post-event analysis is transformed to during-event pre-judgment and processing; a big data analysis technical means is adopted, and therefore, the intelligentlevel of monitoring information analysis can be greatly improved, and more effective and practical technical support can be provided for centralized monitoring operation.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1

Big data mining-based method for deleting flight parameter outliers in classified manner

ActiveCN106933977AMeet the requirements of outlier preprocessingQuick classificationData miningComplex mathematical operationsData segmentFlight vehicle
The invention provides a big data mining-based method for deleting flight parameter outliers in a classified manner. In a flight process of an aircraft, flight parameters are recorded in a flight recorder; and data contains illogical outliers, so that postmortem analysis requirements can be met by deleting the outliers. The flight data is regularly decomposed by adopting a data segmentation method; related data points can be quickly matched by utilizing a characteristic of curve fitting, and related statistical information is obtained; the statistical information of different flight parameters are combined into a variance set; flight parameter segments containing the outliers can be quickly identified by utilizing a radial basis neural network classification characteristic; then, for ill data segments, the positions of the outliers are quickly identified according to characteristics of maximum and minimum values and a mean value; and the subsequent process is performed in the same way, so that outlier points of all the data segments of the different flight parameters are obtained. The method adopts a big data mining thought, is different from a general method for mining the outliers by multi-point filtering, and has relatively high speed and accuracy especially for massive data containing the outlier points.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Emergency evacuation automatic intelligent generation system

InactiveCN106845679ARealize instant automatic generationImprove evacuation handling capacityForecastingSignalling system detailsSimulationPost-hoc analysis
The invention belongs to the technical field of evacuation indication, and relates to an emergency evacuation automatic intelligent generation system. The system comprises an alarm detector, an evacuation indication lamp, and a virtual intersection node. By initializing all through paths, a path database is formed, the path database is taken as a basis reference tool for calculating and generating a shortest escape path according to a keep-away-from-fire and nearby exit evacuation principle, a basic path database is directly established and generated, and the alarm detector and the evacuation indication lamp are set as path nodes. All the through paths are initialized to form the path database; the shortest escape path is calculated and generated according to the keep-away-from-fire and nearby exit evacuation principle; an evacuation scheme generated in real time is written in the database for the system to call and the evacuation indication lamp is driven to be turned on or off directionally; and an alarm event and the evacuation scheme are stored as logs for postmortem analysis. According to the system, the evacuation design command difficulty of a complex fire scene can be lowered, the correctness of an evacuation indication direction is ensured, and intelligent evacuation is more stable and safer.
Owner:梁健宁

Control system for charged particle detection spectrometer of white light neutron source

The invention discloses a control system for charged particle detection spectrometer of white light neutron source. The control system of the present application comprises a local control system and aremote control system; the local control system comprises a motion control module, a vacuum monitoring module, a gas circuit voltage stabilizing module, a particle beam window, and a true air path component protection module; the remote control system is in signal connection with the local control system and used for remotely controlling the operation of the modules of the local control system. The control system of the present application can monitor the state of the vacuum target chamber in real time, and can realize the remote control of the sample changing device, the detector angle rotation mechanism and the vacuum air path system, and the solid foundation can be safely, stably and reliably operated for the vacuum target chamber. The EPICS PV released by the remote control system candirectly enter the voice alarm system and the historical database system of the CSNS accelerator central control room, so that convenient and reliable guarantee is provided for timely finding and processing the problems, performing post hoc analysis and equipment research and the like.
Owner:DONGGUAN NEUTRON SCI CENT

An auditing method of an ssh protocol operation and maintenance auditing system based on agent technology

The invention discloses an SSH protocol operation and maintenance auditing system based on proxy technology. A monitoring playback module is arranged in a proxy server, auditors monitor operation and maintenance sessions between a client side and a target server in real time through the monitoring playback module, and meanwhile the auditors also can play back the finished operation and maintenance sessions according to their requirements. The invention further discloses an SSH protocol operation and maintenance auditing method based on the proxy technology. The functions for command analysis and session monitoring, cut-off and playback in the operating process are achieved when operation and maintenance staff conduct operation and maintenance operation on the target server, and beforehand prevention, current intervention and post analysis and processing of the operation and maintenance operation are achieved. According to the system and method, the internal risk control level of enterprises is increased to a certain degree, the operation and maintenance management level of an information system is increased, user behaviors on the servers are tracked, operation and maintenance cost is reduced, control and audit bases are provided, and the operation and maintenance operation is safer.
Owner:北京华电天益信息科技有限公司

Method and device for confirming minimum sample size of flight plan for airspace simulation analysis

PendingCN113822564AThe collection scale is reasonableAppropriate precisionDesign optimisation/simulationResourcesCorrelation coefficientAir traffic control
A method and device for confirming the minimum sample size of a flight plan for airspace simulation analysis can find a balance point between workload and accuracy, provide a data basis for airspace simulation modeling and evaluation analysis, can be popularized to post-analysis of airspace evaluation. When air traffic control monitoring historical data is used for evaluating an airspace operation state, air traffic control monitoring data with reasonable scale and proper precision is acquired for analysis. The method comprises the following steps: (1) calculating a Pearson correlation coefficient of a sector evaluation index; (2) analyzing the correlation coefficient difference to determine the minimum sample size: analyzing the evaluation index correlation coefficient of each day in a week, analyzing the evaluation index correlation coefficient of each week in the surroundings, analyzing the evaluation index correlation coefficients of every two weeks in the surroundings. the minimum sample size is determined through analysis and comparison of Pearls correlation coefficients of airspace simulation evaluation indexes of a control sector of a certain area in one day, one week, two weeks and three weeks.
Owner:AVIATION DATA COMM +1

Cable 10kv high voltage ring network cabinet remote monitoring and control system

The invention relates to the field of power system monitoring, in particular to a method for real-time monitoring of the operating status of power distribution facilities and distribution cable lines, to realize early warning, alarm and post-event analysis of abnormal and fault states, and to control and adjust the operation of equipment through remote operation Environmental cable 10kV high-voltage ring network cabinet remote monitoring and control system. The invention aims at the intelligent operation and management of the power grid, integrates various online monitoring technologies, installs monitoring cameras, fans and solar energy equipment in the switching station, and can check the monitoring camera information in the switching station and the monitoring of the operating status of the fan through the system in real time to realize abnormality. Early warning, alarm and post-event analysis of fault status, realize dynamic evaluation of equipment health status, realize remote operation control of monitoring equipment, combine multi-dimensional display technology, strengthen safe and reliable operation ability of distribution network, improve fault finding and maintenance efficiency, A complete set of grid visualization monitoring system has been formed.
Owner:STATE GRID CORP OF CHINA +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products