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117results about How to "Objective analysis" patented technology

Multi-mode information fusion-based classroom learning state monitoring method and system

The invention discloses a multi-mode information fusion-based classroom learning state monitoring method and system. The method specifically comprises the following steps of: acquiring an indoor sceneimage and positioning faces in the scene image; estimating face orientation postures in a face region so as to estimate attentions of students according to the face orientation postures; estimating facial expressions in the face region; acquiring skin conduction signals of the students so as to estimating physiological activation degrees of the students according to the skin conduction signals; recording interactive answer frequencies and correctness of the students on the classroom so as to estimate participation degrees of the students; and fusing four-dimensional information such as attention, learning moods, the physiological activation degrees and the classroom participation degrees of the students so as to analyze classroom learning states of the students. The invention furthermoreprovides a system for realizing the method. By applying the method and system, the learning states of students on classrooms can be objectively and correctly monitored and analyzed in real time, so that the teaching process analysis is perfected and the teaching effect differentiation degree is enhanced.
Owner:HUAZHONG NORMAL UNIV

NMR imaging equipment stability and method for measuring image-forming index

The invention discloses a method for measuring the stability and imaging indexes of a nuclear magnetic resonance imaging device and is characterized in that: the images of a water phantom are obtained by adopting the nuclear magnetic resonance imaging device to scan the water phantom, the images are transmitted to a specific nuclear magnetic resonance imaging quality assurance and analysis work station by a DICOM protocol, and then the quality assurance and analysis work station is self started and enters a corresponding measurement process (referring to the figure 1 in the abstract of the process) according to DICOM control elements so as to process and calculate the images of the water phantom; the measuring content includes common nuclear magnetic resonance imaging quality assurance indexes, the shifting indexes which have important significance to Functional MRI, and other indexes; meanwhile, an automatic early warning mechanism is established for auto prompting when an abnormal condition occurs and gives the possible reason, and all measured results are sent into a database for long-term analysis of data and evaluation of running state of the device, so as to offer guidance to relevant technicians to master device state and carry out equipment testing.
Owner:WEST CHINA HOSPITAL SICHUAN UNIV

Gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty

A gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty in an actual engineering design process belongs to the technical field of design optimization and reliability design of mechanical products and includes quantizing the cognition and the random uncertainty of gear modules, tooth number, tooth surface width, distance between bearings and gear diameter caused by the factors of processing, assembly, material characteristics, applied load, external environment and the like, establishing multidisciplinary reliability integrated evaluation index, integrating of the reliability analysis method and a multidisciplinary design optimization strategy, decoupling of a multidisciplinary reliability analysis process, and being based on a functional measurement method. The gear transmission multidisciplinary reliability analysis method considering the cognition and the random uncertainty provides a comprehensive quantitative method, establishes the multidisciplinary reliability integrated evaluation index which is more conformable to engineering practice, integrates a traditional reliability analysis method and the multidisciplinary design optimization strategy, and provides a new thought for reliability analysis of gear transmission products.
Owner:BEIHANG UNIV

Water system connectivity evaluation method

The invention discloses a water system connectivity evaluation method. The method comprises the steps of digitalizing a river network of a target area to obtain river network data reflecting water system connectivity; establishing an evaluation system for the water system connectivity according to the river network data; selecting principal components in a system by adopting a principal componentanalysis method, and weighting the principal components by adopting an entropy method; and determining a water system connectivity comprehensive score of the area, thereby analyzing the change of thewater system connectivity, wherein the evaluation system for the water system connectivity consists of a primary index layer and a secondary index layer; quantity connectivity indexes include river network density and a water surface rate; structure connectivity indexes include a river network growth coefficient, an area-length ratio and an average path length; and function connectivity indexes include a clustering coefficient, a node degree and average node betweenness. The indexes are classified and counted; the comprehensive score is obtained through the principal component analysis methodand the entropy method; and the change of the water system connectivity is objectively analyzed, so that a basis is provided for river-lake health and water system function analysis.
Owner:HOHAI UNIV

Ecological element processing method and system for complex ecological coastal zone

InactiveCN107229919AImprove the difference in the degree of manual interventionObjective analysisScene recognitionCoverage TypeVegetation
The invention relates to en ecological element processing method and system for a complex ecological coastal zone. The method is characterized by obtaining image data of a target complex ecological coastal zone through multi-source remote sensing and processing the image data; then, carrying out coastline classified extraction according to different types of coasts, and extracting coverage comprising vegetation, rivers and artificial coastline surfaces; and finally, according to land utilization degree grade proposed based on ecological perspective and each coverage type ecosystem service variation contribution rate, defining elements having positive ecological contribution and positive ecosystem service values as positive ecological elements and defining elements having negative ecological contribution and negative ecosystem service values as negative ecological elements to construct a coastal zone ecological element classification system. According to the land utilization degree grade proposed based on ecological perspective and each coverage type ecosystem service variation contribution rate, the system and method can fully improve difference of the element classification system in artificial intervention degree in the coastal zone ecological environment study, and help to analyze coastal zone variation characteristics more objectively.
Owner:SHENZHEN INST OF ADVANCED TECH

Personal character analysis method, device and storage medium

The invention provides a personal character analysis method, a device and a computer readable storage medium. The method comprises the following steps of collecting sample videos and annotating character types; extracting the image features and audio features of each sample video, and combining to obtain the video features of each sample video; constructing a neural network using the Softmax classifier as an output layer; annotating and training the neural network based on video features and character types, optimizing training parameters, and obtaining a personal character analysis model; collecting a face video of an to-be-analyzed object for a predetermined duration; extracting the image features and the audio features of the video of the to-be-analyzed object, and combining to obtain the video features of the video of the to-be-analyzed object; inputting the of the video features of the video of the to-be-analyzed object into the personal character analysis model to obtain a probability value corresponding to each character type of the to-be-analyzed object; and adopting a character type with the largest probability value as the character type of the to-be-analyzed object. According to the invention, the personality of a person can be objectively analyzed.
Owner:PING AN TECH (SHENZHEN) CO LTD

Character personality analysis method based on recurrent neural network and character personality analysis device based on recurrent neural network and storage medium

The invention provides a character personality analysis method based on a recurrent neural network and a character personality analysis device based on the recurrent neural network and a computer readable storage medium. The method comprises the following steps that a sample video is collected and the personality type is marked; the feature vectors of the sample video image sequence are extracted;a recurrent neural network model with the Softmax classifier acting as the output layer is constructed; the recurrent neural network model is trained by using the feature vectors and the personalitytype mark and the training parameters are optimized so that a character personality analysis model is obtained; the facial video of an object to be analyzed is acquired and the feature vectors of thevideo image sequence are extracted; and the extracted feature vectors are inputted to the character personality analysis model so that the probability value of each corresponding personality type of the object to be analyzed is obtained, and the personality type of the highest probability value is taken as the personality type of the object to be analyzed. The character personality can be objectively analyzed by using the character personality analysis method and the character personality analysis device.
Owner:PING AN TECH (SHENZHEN) CO LTD

Multimode physiologic and behavioral data integration and collection system

PendingCN107137096ALow costImprove the efficiency of fusion analysisSensorsPsychotechnic devicesData displayData connection
The invention discloses a multimode physiologic and behavioral data integration and collection system which comprises a background processor, a data collection unit and a data display unit. The background processor is integrated in a computer and used for receiving data collected by the data collection unit, the data collection unit comprises a physiologic collection module, a behavioral collection module and an environment collection module, the background processor comprises a data storage module, a time sequence module and a data analysis module, and the data storage module is in data connection with the physiologic collection module and the behavioral collection module and used for receiving collected physiologic data and behavioral data; the time sequence module is used for storing the collected physiologic data and behavioral data into the data storage module according to a time sequence, and the data analysis module is used for analyzing the physiologic data and the behavioral data in the data storage module to acquire an analysis result online. The collected physiologic and behavioral data different in mode are synchronously transmitted into the same background processor and synchronously integrated, so that cost of system equipment is reduced greatly, and improving of data integration analysis accuracy is facilitated.
Owner:北京中科心研科技有限公司

Commodity information processing method and commodity information processing system

ActiveCN103778545AFeature matchingAvoid competition in the same industryMarketingInformation processingLibrary science
The invention provides a commodity information processing method and a commodity information processing system and relates to the technical field of networks. The method comprises the following steps: a first server receives participation requests of first users and commodity information of the first users; transaction information data of the first users is respectively acquired from a second server according to the participation requests of the first users; the second server records the transaction information data of the first users; the first users are grouped according to the transaction information data of the first users; and the commodity information of the first users in the same group is integrated. According to the commodity information processing method and the commodity information processing system, commodity information of commodity information delivery parties can be accurately and objectively grouped; waste of commodity information delivery resources is reduced and the delivery efficiency is improved; a lot of time for communication is saved for the commodity information delivery parties, and long-cycle commodity information integration time caused by the communication cycle is shortened; and the integration efficiency is high, and the cost of integration can be reduced.
Owner:ALIBABA GRP HLDG LTD

Isolating switch operating mechanism with mechanical jam detection function and application method thereof

The invention discloses an isolating switch operating mechanism with a mechanical jam detection function and an application method thereof. The isolating switch operating mechanism comprises an isolating switch operating mechanism body with a rotatable output shaft. A torque and rotation angle measurement unit is set on the output shaft. A data receiving device is set in the isolating switch operating mechanism body. The torque and rotation angle measurement unit and the data receiving device are connected through utilization of a wireless network. The application method comprises the steps ofcarrying out switch-off and switch-on operation, detecting torque and a rotation angle of the output shaft of a tested high voltage isolating switch through utilization of the torque and rotation angle measurement unit, and generating actually measured torque and rotation angle data; and comparing the actually measured torque and rotation angle data with preset torque and rotation angle data of anormal state, and determining whether a mechanical jam fault occurs in the tested high voltage isolating switch or not. According to the isolating switch operating mechanism and the application method, online monitoring and diagnosis of mechanical jam of the isolating switch can be realized, the mechanical jam can be discovered and processed early, scientific basis for condition based maintenanceis provided, and daily operation state evaluation basis for equipment also can be provided.
Owner:STATE GRID HUNAN ELECTRIC POWER +3

Thrust ball bearing optical interference linear oil film thickness detection method

ActiveCN111811414ACaptureEase of sampling in situUsing optical meansBall bearingSteel ball
The invention discloses a thrust ball bearing optical interference linear oil film thickness detection method, aiming at the problem that an existing optical interference film thickness measuring method based on a ball disc cannot accurately reflect the thickness of an oil film in a bearing. The thrust ball bearing optical interference linear oil film thickness detection method comprises the stepsof: after a gap between a steel ball and a retainer is filled with lubricating grease, attaching a thrust ball bearing retainer steel ball assembly to a steel thrust ball bearing ring, so that a glass thrust ball bearing ring and the thrust ball bearing retainer steel ball assembly bear loads; then, shooting oil film light interference images between the steel ball in the thrust ball bearing retainer steel ball assembly and a raceway of the glass thrust ball bearing ring in rotating and rotation-stopping states of the glass thrust ball bearing ring by means of a microscope high-speed camera sequentially, and observing the shape of a second-phase grease pool; and finally, taking down the thrust ball bearing retainer steel ball assembly and the steel thrust ball bearing ring, shooting the morphology of grease whiskers in the raceway of the steel thrust ball bearing ring to obtain a grease whisker angle mean value. The thrust ball bearing optical interference linear oil film thickness detection method can analyze the oil film state and a backflow mechanism of base oil during actual operation of a bearing.
Owner:HANGZHOU DIANZI UNIV
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