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47 results about "Point evaluation" patented technology

Volume fracturing method for greatly improving filling efficiency of micro-support system through deep shale gas

The invention discloses a volume fracturing method for greatly improving the filling efficiency of a micro-support system through deep shale gas. The volume fracturing method comprises (1) deep shalekey parameter evaluation; (2) geotechnical engineering comprehensive sweet point evaluation and section cluster perforation position determination; (3) crack parameter system optimization; (4) fracturing construction parameter optimization; (5) different-viscosity smooth water and smooth water, carbon dioxide foam fracturing fluid and pretreatment acid solution formula optimization; (6) perforation operation; (7) acid pretreatment; (8) supercritical carbon dioxide multi-scale crack construction; (9) low-viscosity smooth water branch crack and micro crack expanding and main crack producing construction; (10) alternative injection through supercritical carbon dioxide and smooth water; (11) smooth water and carbon dioxide foam fracturing fluid small particle size supporting agent injection; and (12) displacement operation. By means of the volume fracturing method, the net pressure of a main crack can be improved to the greatest extent, the width of a multi-scale crack is expanded, the flow guiding capability is improved, and therefore the purpose of improving the deep shale gas fracturing effect and increasing the yield is achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Internet teaching auxiliary teaching system based on key teaching point evaluation

The invention discloses an internet teaching auxiliary teaching system based on the key teaching point evaluation. The system comprises a student terminal image collection device which collects a face image of an evaluated student; an information transmission device used for transmitting the face image acquired by the student terminal image acquisition device to the classroom behavior analysis processor; a class behavior analysis processor used for classifying emotions of the students when learning a plurality of knowledge points related to the key teaching points and respectively endowing the emotions with mastering probability values; an intelligent classroom device used for realizing teaching interaction with the student terminal, and automatically judging whether the corresponding knowledge points are mastered or not according to the correct and wrong conditions of all questions in the teaching interaction; and a key teaching point evaluation device which calculates the total mastery rate of the key teaching points according to the analysis and judgment results of the classroom behavior analysis processor and the intelligent classroom device. According to the system, related videos of the key teaching points can be conveniently and quickly found according to the mastery condition of the key teaching points. The course look-back is effectively carried out based on recording and playing courses.
Owner:杭州博世数据网络有限公司

Structured light stripe central point reliability evaluation method

The invention relates to a structured light stripe central point reliability evaluation method. An evaluation object is a light stripe central point obtained from a light stripe image by adopting a method, and structured light stripe central point evaluation basis is energy sum of a Gauss normalization model which takes the central point as the center on the cross section in the normal direction of the light stripe. The method includes: a light stripe central point is extracted by adopting a method, a point sequence of cross section in the normal direction of light stripe at the central point is acquired, and Gauss model normalization is carried out on the point sequence of the cross direction in the normal direction of the light stripe; energy sum of normalization Gauss model of the point sequence of cross section in the normal direction of the light stripe is calculated, and reliability evaluation index of the point is obtained; grey scale sum of the calculated light stripe central point cross section normalization Gauss model sequence is calculated; normalization of global image is carried out on the obtained central point reliability evaluation index, reliability is normalized according to reliability maximum of the image, and finally normalized reliability evaluation is obtained. The evaluation on light stripe central point in the invention accords with actual evaluation requirement.
Owner:NANJING UNIV

Photovoltaic array state determination method

InactiveCN105160166AImprove accuracyConducive to real-time operation and maintenanceSpecial data processing applicationsTime functionMppt algorithm
The present invention relates to a photovoltaic array state determination method. The method comprises: collecting feature parameters that affect each photovoltaic array state; introducing a time sequence node and a photovoltaic array monitoring point, and establishing a parametric value model from latitudinal and longitudinal dimensions; constructing a photovoltaic array running state assessment model based on a positive and negative ideal point assessment scheme; and establishing a time function relationship between a state assessment result set and each longitudinal and latitudinal parametric value by using a Gaussian curve fitting method, and in combination with an array I-V curve and an irradiance-temperature curve, accurately assessing a current photovoltaic array state from longitudinal and latitudinal angles, analyzing an abnormality cause, and proposing an operation and maintenance measure. By performing state assessment according to a plurality aspects of feature parameters, accuracy of state assessment can be improved, real-time operation and maintenance of a photovoltaic array is facilitated, and the method lays a good foundation for improving power generation efficiency of a photovoltaic array group and searching for a better MPPT algorithm and has high application value.
Owner:XUJI GRP +1

Personalized line recommendation system and method based on a location social network

InactiveCN109918573AWillingness to matchHigh degree of willingness to matchForecastingGeographical information databasesPersonalizationStart time
The invention discloses a personalized line recommendation system and method based on a position social network, and belongs to the technical field of information. The invention aims to solve the problem that the matching degree of information such as offline mining of interest points and stay time, expenditure and the like of a server and the willingness degree of a user needs to be further improved in the existing line recommendation method and the problem that the travel efficiency of a recommended line is low. The system comprises an offline interest point planning module which acquires interest point information according to user history sign-in data and carries out clustering according to the interest point information; An interest point evaluation module which constructs an interestpoint scoring model based on user and time characteristics according to the obtained interest point information and carries out scoring; The planning request module is used for acquiring user input information and generating a route planning request; And the route planning module plans a route according to the interest point information of the user, the user information module, the starting placeinformation and the starting time information. The method is suitable for personalized line recommendation.
Owner:HEILONGJIANG UNIV

Shared automobile parking network point determining method based on automobile using behaviors

The invention discloses a shared automobile parking network point determining method based on automobile using behaviors in the field of shared trips. The method comprises the following steps: acquiring GPS position data of each vehicle during temporary parking from a vehicle management system; obtaining parking network points within a set range of the GPS position data and taking the parking network points as candidate parking network points; hierarchical analysis, setting weights for all the first-level indexes of the candidate parking network points respectively, and calculating scores of all the first-level indexes; according to the weight and the score of each first-level index, obtaining a second-level index; calculating a comprehensive score of each candidate parking network point; inputting the comprehensive score into a pre-created parking network point evaluation model; acquiring, the grade of each parking network point in the candidate parking network points generating the grade list and selecting a certain number of parking network points from the candidate parking network points as the parking network points according to the grade list, so that the site selection of the supplementary parking network points in the later period is effectively realized, the user consumption experience is improved, and the urban traffic resource configuration is optimized.
Owner:北京首汽智行科技有限公司

Network security decision-making method and device for game attack and defense graph and storage medium

InactiveCN110401650ADistinguish between hazardous situationsIncrease incomeData switching networksNetwork managementSecurity policy
The invention discloses a network security decision-making method and device for a game attack and defense graph and a storage medium, and the method comprises the following steps: employing an optimal vulnerability evaluation weight combination search algorithm and an optimal vulnerability point evaluation weight combination selection algorithm to evaluate vulnerability points of all host nodes,and obtaining high-diversity scores of the vulnerability points; constructing a state attack and defense graph; calculating the success probability and hazard index of attack accumulation in the stateattack and defense graph in combination with the high diversity score of the vulnerability; establishing a game model according to the state attack and defense graph; solving the game model to obtainan optimal attack and defense strategy. An optimal vulnerability evaluation weight combination search algorithm and an optimal vulnerability point evaluation weight combination selection algorithm are adopted to evaluate vulnerability points in a target network, the actual harm condition of each fragile point can be effectively distinguished, so that a more reliable game attack and defense graphis established, the optimal security strategy of the network is obtained by solving the game attack and defense graph, and the network management of the maximum income is realized.
Owner:WUYI UNIV

Hypertension auxiliary diagnosis method and system

InactiveCN110610761AAccurate crowd positioningRealize predictive evaluationMedical data miningMedical automated diagnosisDiagnosis methodsMedicine
The invention discloses a hypertension auxiliary diagnosis method, which comprises the steps: generating a knowledge base and association rules, and automatically generating a patient database based on the knowledge base and the association rules; based on data before diagnosis and treatment of a patient to be diagnosed and treated, selecting k similar records from the data before diagnosis and treatment of a plurality of patients in the database; based on the selected k similar records, carrying out clustering by utilizing k records corresponding to the k similar records in diagnosis and treatment scheme data in the database; and based on the clustering result, establishing a scheme model with a preset diagnosis and treatment end point evaluation index by utilizing the data after diagnosis and treatment in the database. The invention further discloses a hypertension auxiliary diagnosis system corresponding to the method. Due to the fact that the individual characteristics of hypertension patients are greatly different, and blood pressure reduction schemes are complex, for recommended similar patient re-clustering scheme recommendation, more accurate crowd positioning can be achieved to assist doctors to make diagnosis and treatment scheme precision and personalized decisions.
Owner:胡盛寿 +3

Automatic collaborative decision-making method for professional authentication knowledge

InactiveCN105938574AForecastingCooperative decision makingPoint evaluation
The invention relates to an automatic collaborative decision-making method for the professional authentication knowledge. Cooperative decision-making mechanisms of several kinds of evaluation means are provided. To be specific, mainly two kinds of mechanisms including an examination evaluation difficulty adjusting cooperation mechanism and a technical index point and non-technical index point evaluation cooperation mechanism are provided. The examination evaluation difficulty adjusting cooperation mechanism is based on initial examination evaluation T1 and employs curriculum group support evaluation T2, indirection evaluation T3, and space teaching method evaluation T4 as the adjusting evaluation means; and after the initial examination evaluation T1 is adjusted based on cooperation of the cooperative decision-making mechanisms of several kinds of evaluation means, thereby obtaining adjusted examination evaluation T5. According to the technical index point and non-technical index point evaluation cooperation mechanism, whether an index point is a technical index point or a non-technical index point is determined; and cooperation is carried out based on the curriculum group support evaluation T2, indirection evaluation T3, space teaching method evaluation T4, and adjusted examination evaluation T5, thereby obtaining a completion situation of the index point. iterative increment division is carried out and the knowledge is discovered in an iterative mode each time; and thus an opportunity is provided for evaluating the demand and the design again.
Owner:XIANGTAN UNIV
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