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Student answer information real-time collection and efficient and intelligent correcting system and use method in teaching process

InactiveCN105469662ARealize teaching students in accordance with their aptitudeSolve pain pointsElectrical appliancesComputer sciencePhysical exercise
Provided is a student answer information real-time collection and efficient and intelligent correcting system and use method in a teaching process, belonging to a teaching system. A teacher lesson preparation module is used for teachers to compile exercises, input standard answers and scores, and upload data to a server; students upload answers to the server at student clients; an efficient and intelligent correcting module is used for automatically correcting objective questions, preprocessing subjective questions, automatically correcting the questions capable of being intelligently corrected, sending the questions incapable of being intelligently corrected to teachers for correction, and transmitting correction results to the server; the server feeds back the correction results to the student clients. The system and method can realize ''networking, digital and customized'' education, allow students to ''learn anywhere and anytime'', deeply fuse with current education, reach the effect of ''classroom application, regular application, and universal application'', and be easily and extensively copied in areas with poor education resources to realize educational equity and teaching in accordance with the aptitude of students.
Owner:黄道成

Double safety and effectiveness inspection method of human lumbar bone and implant

The invention provides a double safety and effectiveness inspection method of human lumbar bone and implant, and belongs to the field of medicine. The method comprises the following steps: acquiring a 3D (three-dimensional) rendering model of lumbar body bone, lumbar disc and interspinous ligament by a 3D reconstruction technology; performing 3D grid division to the 3D rendering model, and giving attributes of a heterogeneous material to the 3D rendering model; performing 3D modeling to an implant; assembling the lumbar body bone, the lumbar disc, the interspinous ligament and the implant, and analyzing stress and strain of the assembly by adopting uniformly distributed nodal load through a finite element analysis method; simulating visible finite element analysis by a computer before the implant is implanted into a human body. Therefore, the verification requirement to bone and implant double safety and effectiveness can be fulfilled, the damage of the implant to original human lumbar bones can be prevented, double safety and effectiveness of the bones and implant can be guaranteed, the manufacture cost can be effectively reduced along with convenience and quickness, and individual and industrial manufacturing of a human lumbar bone implant can be realized. The method is applicable in the field of implant stress-strain analysis in the orthopedics department.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Method for using handheld device to position plane area

The invention discloses a method of using a handheld device to position a plane area. The method comprises the following steps: obtaining corresponding panoramic view of a plane according to a real scene; erecting a plane coordinate system in the panoramic view of the plane; obtaining features of the panoramic view and corresponding coordinates under the plane coordinate system in the the panoramic view of the plane and erecting an index according to the features of the panoramic view; using the handheld device to collect images of a target area and uploading to a server; obtaining features of the imaged of the target area in the target area through the server, matching the features of the images of the target area with the features of the panoramic view, and erecting an affine transformation matrix H used for the coordinate transformation according to the matching relation; mapping the coordinates of the images of the target area to the panoramic view of the plane according to the affine transformation matrix by the server so as to achieve the positioning of the images of the target area in the real scene; and then passing back the corresponding positioning information to the handheld device. The method of using the handheld device to position the plane area is convenient and fast, real-time, efficient and accurate.
Owner:ZHEJIANG UNIV

Method of resource allocation based on SQL sentence runtime and computer equipment

The invention provides a method of resource allocation based on the SQL sentence runtime. The method comprises the steps of collecting executing record IDs of SQL histories, SQL sentences and the runtime; according to the executing record IDs, obtaining resources allocated when the SQL sentences are executed to form resource vectors R, analyzing the SQL sentences to obtain operators, table names and column names, querying metadata information according to the table names and the column names, obtaining data information and corresponding the data information to the operators to form operation vectors OP; regarding the runtime as a target variable and R and OP as predicting variables, using a machine learning algorithm to build a predicting module, and training a predicting model; submittingthe SQL sentences and the resource vector values R, and predicting the needed executing time through the predicting model; according to the executing time, selecting resource allocation modules. Theinvention further provides computer equipment. By means of the method of the resource allocation based on the SQL sentence runtime and the computer equipment, the system expense is effectively lowered, the burden of a user is lowered, and the user experience is improved.
Owner:福建星瑞格软件有限公司

Literature recommendation method and system based on heterogeneous graph neural network

PendingCN112380435ATo achieve the purpose of personalized recommendationPersonalizeDigital data information retrievalCharacter and pattern recognitionLiterature citationSource data
The invention provides a literature recommendation method based on a heterogeneous graph neural network. The method comprises the following steps of obtaining user feature data and literature featuredata; extracting literature attribute data and literature citation data from the literature feature data, and obtaining literature citation feature data through a graph convolutional neural network according to the literature attribute data and the literature citation data; extracting structural data according to a preset meta-path, constructing a heterogeneous information network according to thestructural data, and obtaining structural feature data through a self-attention mechanism learning network; normalizing the source data to obtain a sample set, dividing the sample set into a trainingset and a test set, and inputting the training set and the test set into the recommendation model to train the recommendation model and obtain a recommendation result. Structural feature data of users and structural feature data of literatures are mined through a graph convolutional neural network and a graph attention network, diversified interest representation is carried out on the users, andthe purpose of carrying out personalized recommendation on the users is achieved.
Owner:PEKING UNIV +2

All-drive-by-wire electric vehicle chassis coordination control method based on driver characteristics

The invention discloses an all-drive-by-wire electric vehicle chassis coordination control method based on driver characteristics. The method includes the steps of collecting processing driving behavior parameters and vehicle state direct parameters, estimating vehicle state indirect parameters and road environment parameters, distinguishing the personality characteristics for classifying drivers,calculating longitudinal ideal state parameters and transverse ideal state parameters, conducting personality modifying on the ideal state parameters, distributing personality ideal yaw velocities, calculating the torque of wheels according to the personality longitudinal ideal state parameters and the distributed personality ideal yaw velocities, and calculating the rotating angle of the wheelsaccording to personality side slip angle parameters and distributed personality ideal yaw velocities. By means of the method, it is ensured that a longitudinal dynamics system assists a transverse dynamics system in steering when necessary, the vehicle steering safety is improved, the frequent actions of the longitudinal dynamics system at unnecessary moments are avoided, and meanwhile the personality of a chassis dynamics control system is realized.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
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