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56results about How to "Choose science" patented technology
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Uniformity analysis method of three-dimensional observation system
The invention provides a uniformity quantitative analysis method of a three-dimensional observation system. The uniformity quantitative analysis method is as follows: by calculating non-uniformity coefficient of coverage time distribution, non-uniformity coefficient of geophone offset distribution, non-uniformity coefficient of azimuth angle distribution and non-uniformity coefficient of geophonecoverage, analyzing the distribution uniformity of coverage time, the geophone offset, the azimuth angle and the geophone coverage of the three-dimensional observation system qualitatively and quantitatively from two levels of a single surface element and a plurality of surface elements, instructing the design of the observation system, and providing basis of judgment for the accuracy of acquisition construction, so that the selection of the three-dimensional observation system can be more scientific, reasonable and objective.
Owner:CHINA PETROCHEMICAL CORP +1
Pedestrian re-identification model, method and system for adaptive difficulty mining
InactiveCN108647577AChoose sciencePrevent overfittingCharacter and pattern recognitionModel extractionSample image
The invention discloses a pedestrian re-identification model, method and system for adaptive difficulty mining. The identification method comprises the steps of: randomly dividing sample pictures intoa training set used for each iteration, inputting the training set into a convolutional neural network, obtaining the probability that each sample pair belongs to a positive or negative sample pair by using a softmax function, and then obtaining the loss of each sample pair by using a multinomial logistic function; obtaining a difficult sample pair by using the loss of each sample pair; and training the convolutional neural network by using the difficult sample pair until the current number of iterations reaches the upper limit of the number of iterations, thus obtaining the pedestrian re-identification model. The pedestrian re-identification model is used to extract features of each picture in a picture set to be identified, and then a similarity order of the sample pairs in the pictureset to be identified is obtained. The pedestrian re-identification model, method and system avoid over-fitting and under-fitting, and have high recognition accuracy.
Owner:HUAZHONG UNIV OF SCI & TECH
Packaging bag and its making method
A packing bag for food is composed of a first film layer with several slits generated by calendering and a second film layer to interlock with several lateral edges of the first film layer. Its preparing process includes such steps as preparing high-molecular films, calendering, coating, hot pressing for enclosing edges, and cutting for removing excessive edges. It features that the food contained in it can be easily heated by microwave oven, high-temp. steam, boiling or infrared ray.
Owner:谢星倩
Heat-resistant instrument cable for ships and manufacturing process of heat-resistant instrument cable
ActiveCN102760517ASmall structure sizeImprove electrical performanceNon-insulated conductorsInsulated cablesElectrical conductorCopper wire
The invention discloses a heat-resistant instrument cable for ships and a manufacturing process of the heat-resistant instrument cable, and is characterized in that a cable conductor is formed by twisting a plurality of tin-plated copper wires which are drawn by a copper rod and are treated by annealing and tin plating; the conductor is extruded with an insulating layer to form an insulating cable core; a twisted-pair unit is formed by two insulating cable cores; a cable core is formed by twisting a plurality of twisted-pair units; the outer surface of the cable core is provided with a longitudinally-added drainage wire, a shielding layer weaved by the tin-plated copper wires and an extrusion sheath layer in sequence; and the insulating layer and the outer sheath layer are respectively made of fluororesin extruding materials. The heat-resistant instrument cable is suitable to be used as an electric instrument connecting line under the severe high-temperature environments such as near diesel engines and in control chambers, and has the advantages of small structural size, high temperature resistance, water vapor resistance, flame retardance, acid-alkaline chemical agent resistance, fire resistance and excellent electric performance and mechanical performance.
Owner:ANHUI GUODIAN CABLE GRP
Method for selecting sensing node based on key road segments in crowd sensing system
InactiveCN109615851ASolve the installationSolve the costDetection of traffic movementSatellite radio beaconingRoad networksCrowds
The patent discloses a method for selecting sensing node based on key road segments in crowd sensing system, and the method comprises the following steps of: step 1, constructing a crowd sensing system; step 2, determining the key road segments; step 3, the cloud platform selecting the key road segments and delivering the sensing task; and step 4, the cloud platform selecting the sensing node based on the key road segments. The invention adopts the crowd sensing technology to monitor the traffic state of the road network, and solves the problem that the installation and maintenance cost of fixed detectors is too high.
Owner:BEIHANG UNIV
Method for showing mobile phone program change process
ActiveCN104301484AChoose scienceProgram change scienceSubstation equipmentHigh frame rateComputer science
The invention provides a method for showing the mobile phone program change process. The method for showing the mobile phone program change process comprises the following steps that a testing system is established, wherein the testing system comprises a mobile phone to be tested, a high-frame-rate shooting device and a mobile phone control device, the mobile phone is arranged in the direction opposite to the shooting device, and the mobile phone control device is used for triggering start and running of programs; a camera is calibrated before testing so that distortion of an image is reduced; key frames of mobile phone program changes are selected. By the adoption of the method for showing the mobile phone program change process, the mobile phone program change process is shown by selecting the key frames, the key frames are obtained by selecting stable frames and change frames in program change, it can be guaranteed that program changes can be scientifically and accurately shown by the mobile phone, the method is simple and easy to implement, selection is accurate, effective showing data can be obtained, a satisfactory effect can be achieved, and an accurate basis is provided for evaluation of the program running states of smart phones.
Owner:天津市康凯特软件科技有限公司
Evaluating method for container energy storage equipment core part based on remote monitoring
The invention relates to an evaluating method for a container energy storage equipment core part based on remote monitoring. The method comprises the following steps: establishing a standard curve view of single battery data under standard feature points; acquiring actual feature point data of a single battery in real time by a remote server, and establishing an actual curve view of battery data of the single battery under the actual feature point data; comparing the actual curve view of battery data of the same feature point with the standard curve view of battery data for analysis; weighting analyzed data, so as to obtain feature point evaluation value of the single battery; according to the feature point evaluation value and a feature point weight determined by a practical situation, obtaining the project evaluation value of each single battery through computation. According to the invention, the evaluating method has the technical benefits that the scientific selection of the core part is realized, the method is more scientific, objective and accurate, and the time cost and economic cost are reduced.
Owner:SHENZHEN CLOU ELECTRONICS
Traditional Chinese medicine for treating bone tuberculosis and arthritis
InactiveCN100998637AChoose scienceFormulation ScienceAmphibian material medical ingredientsAntibacterial agentsMedicinal herbsDisease
Owner:王丽娜
Successive projection algorithm based near-infrared wavelength variable selecting method
ActiveCN103927438AChoose scienceDimensionality reductionSpecial data processing applicationsWeight valueProjection algorithms
The invention discloses a successive projection algorithm based near-infrared wavelength variable selecting method. The selecting method includes classifying a full spectrum into a relevant wave number point set, an irrelevant wave number point set and a noise wave number point set by means of a weighted value method, selecting a wave number point set from the relevant wave number point set and the irrelevant wave number point set, establishing a rectifying model, and judging importance of newly selected wavelength variables by means of rectangular projection. The successive projection algorithm based near-infrared wavelength variable selecting method overcomes the linear dependence, effectively reduces data dimensions, extracts interpretation information to the greatest extent, and ensures the established rectifying model to be with high stability.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Bisecting K-means algorithm based on density dividing principle
InactiveCN106919955AOvercoming the disadvantage of shape insensitivityOvercome the disadvantage of not being able to remove noise pointsCharacter and pattern recognitionData setAlgorithm
The invention relates to a bisecting K-means algorithm based on a density dividing principle. Through the bisecting K-means algorithm, a data set is divided into two clusters. Furthermore by means of a dbscan algorithm, the number of sub-clusters which can be obtained through dividing all the clusters is obtained. The cluster with largest number of sub-clusters is further divided through the bisecting K-means algorithm. Clustering is finally finished through continuous iteration. The bisecting K-means algorithm has advantages of overcoming a defect of low sensitivity to cluster shape in an sse minimum dividing principle, more scientifically selecting the cluster to be divided, effectively improving clustering accuracy, furthermore realizing requirement for comparison of the number of sub-clusters in each cluster on the condition of same neighbor radius and number-of-points threshold, preventing clustering accuracy reduction caused by improper neighbor radius and number-of-points threshold setting, overcoming a defect of incapability of eliminating noise points in partitioning clustering, and realizing high realistic meaning.
Owner:JIANGSU UNIV
Cloud platform node selection method and system
The invention relates to the technical field of cloud computing, and discloses a cloud platform node selection method and system. The method comprises the following steps: acquiring geographic position information of nodes and dividing nodes at the same geographic position in the same node class according to the geographic position information; acquiring one or a plurality of designated node class(es) to serve as a current node class; acquiring operating condition information of the nodes in the current node class and sorting the nodes in the interior of the current node class according to the operating condition information; and acquiring designated nodes in the current node class according to the sorting, and providing the designated nodes to a cloud platform. According to the invention, the balance in the process of selecting the nodes for the cloud platform is ensured. Moreover, according to the invention, a function of filtering the nodes according to the requirements of application is also realized and the nodes which do not meet the requirements can be filtered out.
Owner:BEIJING SOHU NEW MEDIA INFORMATION TECH
Bituminous mixture uniformity evaluation method based on virtual split test
InactiveCN110376225AThe evaluation result is accurateChoose scienceMaterial analysis using wave/particle radiationOperabilityUltimate tensile strength
The invention discloses a bituminous mixture uniformity evaluation method based on a virtual split test. The method comprises the following steps: firstly acquiring a cylindrical bituminous mixture test piece; then acquiring multiple two-dimensional horizontal cross section images of the bituminous mixture test piece, and converting the acquired images into grayscale images; and then obtaining boundary coordinates of each aggregate and each gap by utilizing the cross section and grayscale images of the bituminous mixture test piece, building a three-dimensional discrete element model for a bituminous mixture test piece split test and performing the virtual split test, thus obtaining split strength, and calculating a variable coefficient of the split strength index, so that uniformity of abituminous mixture is evaluated. The method disclosed by the invention is based on the virtual split test, can perform quantitative evaluation on the uniformity of the bituminous mixture by adopting the variable coefficient of the split strength index and has strong industrial applicability and operability; and compared with other methods, the method disclosed by the invention is more scientific and representative in uniformity parameter selection, and an evaluation result on the uniformity of the bituminous mixture is more accurate.
Owner:ZHEJIANG UNIV
Operation decision-making method and system for artificial precipitation (snow) ground smoke furnace
ActiveCN110972783AAvoid problems such as loss and wasteChoose to be objectiveWeather influencing devicesProcess engineeringWeather radar
The invention provides an operation decision-making method and system for artificial precipitation (snow) ground smoke furnace. The method comprises the steps: carrying out the real-time monitoring ofthe development and evolution of precipitation echoes through employing a Doppler weather radar which is a main tool for artificial influence weather operation command; in combination with a ground weather situation field, a wind profile radar and an ADMS model to perform AgI smoke agent diffusion simulation and comprehensive analysis on vertical wind field reanalysis data and the like, researching and establishing an artificial precipitation (snow) ground smoke furnace operation decision-making method. By using the method, the selection of the operation time of the artificial precipitation (snow) ground smoke furnace is more objective, scientific, simple and feasible, and the problems of secondary pollution of smoke agent descending, loss and waste of smoke cartridges and the like causedby blind selection of the operation time are avoided.
Owner:大连市人工影响天气办公室 +1
A method for optimizing the consistency index of spent power batteries based on clustering and information entropy
InactiveCN109299752ABroaden your optionsReasonable designData processing applicationsCharacter and pattern recognitionPower batteryConsistency index
The invention relates to a preferred method for consistency index of waste power battery based on clustering and information entropy, which relates to the field of index evaluation of waste power battery, comprising the following steps: index selection; any index related to battery attribute can be brought into an optional index database; Primary selection, excluding invalid indicators such as unavailable data; Screening, through correlation analysis and clustering analysis to remove redundant information more than the threshold of the index; Preferably, the entropy of information is calculated, and the index with the highest significance is retained by the combination of clustering analysis. The open selection index of the invention is reasonable in design, and more scientific and effective battery consistency evaluation index is obtained through a series of quantitative analysis.
Owner:济宁市创启信息科技有限公司
Home service robot intelligent navigation algorithm adapting to complex environment
InactiveCN112180916AIntelligent RecognitionChoose to adaptPosition/course control in two dimensionsSimulationMultiple sensor
The invention discloses a home service robot intelligent navigation algorithm adapting to a complex environment, which integrates information of multiple sensors, reconstructs the working environmentof a robot in real time, effectively enhances the robustness of a system and realizes all-time and all-weather navigation and positioning of the robot in a strange environment. According to the invention, an evaluation model is established, an optimal local path planning algorithm is selected, and the local path planning algorithm is optimized in combination with the height information, so that the problem that a robot cannot accurately judge whether an obstacle exists in a current advancing path or not due to the fact that the robot cannot sense the height information on a map is solved, andthe traditional ant colony algorithm is optimized., and the problem of path planning when the home service robot has a plurality of necessary working points is solved. Meanwhile, the algorithm has higher convergence speed, and the performance of the algorithm is obviously improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method for realizing communication between mobile terminals by use of FM and mobile terminal
ActiveCN104113633ATroubleshoot poor signal qualityChoose scienceSubstation equipmentSignal qualityRadio frequency signal
The invention provides a method for realizing communication between mobile terminals by use of FM. The method comprises the following steps: all available signal frequencies within a predetermined range in the surrounding area are scanned, and the signal frequency parameters of the signal frequencies are acquired; the signal frequency parameter of an interactive mobile terminal communicating with a target mobile terminal is acquired; a shared signal frequency of the target mobile terminal and the interactive mobile terminal in transmitting / receiving is calculated according to the signal frequency parameter of the target mobile terminal and the signal frequency parameter of the interactive mobile terminal; and frequency-modulation FM signal communication with the interactive mobile terminal is realized by use of the shared signal frequency. According to the invention, the signal equality of a signal frequency at which each mobile terminal receives or transmits a radio frequency signal is enabled to be at a most appropriate level. The problem that the signal quality is poor when some mobile terminals receive a radio frequency signal is solved.
Owner:LENOVO MOBILE COMM TECH
CORS site selection method based on checkerboard test
PendingCN114004104AHigh resolutionImprove reliabilityDesign optimisation/simulationConstraint-based CADAlgorithmFracture zone
The invention discloses a CORS site selection method based on a checkerboard test. In a traditional inter-earthquake deformation research, a CORS site for inversion is selected from a site on a block around a fault zone, and blindness is achieved. The method comprises the following steps: symmetrically selecting a plurality of virtual line segments on two sides of a fault zone by utilizing GIS software; selecting a plurality of feature points on the virtual line segments as simulated CORS sites; arranging two rows of nodes in the trend and inclination direction of the fault zone; adopting a DEFNODE negative dislocation inversion program for carrying out forward and reverse checkerboard testing, wherein the smaller the color difference of checkerboard black and white grey-scale maps is, the higher the resolution of a testing node model to CORS site data and the reliability degree of inversion are, and the testing node model serves as a point selection basis. Research results of the method provide important reference and reference for seismic fault activity researchers in the fault point distribution process, and the expensive cost for constructing CORS sites is saved.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP +1
Construction method of regional spatial pattern intervention gravity field optimization model of multi-data sources
InactiveCN105809737AAnalytical results are reliableEasy access3D modellingNODALThree-dimensional space
The invention relates to a gravity field model construction method and specifically relates to a construction method of a regional spatial pattern intervention gravity field optimization model of multi-data sources. The method comprises the following steps of: firstly, constructing a three-dimensional space model of an area according to the regional space structure and human space behaviors; and secondly, extracting all road network nodes in the area according to the three-dimensional space model in the first step, calculating intervention center values of all the road network nodes and the distance between any two road network nodes, obtaining the gravitation intensity between any two road network nodes, and further establishing a three-dimensional gravity field model of the area. According to the invention, the real three-dimensional expression of the area is realized, high-efficiency and scientific space analysis is carried out on the area by the utilization of the gravity field theory, and the selecting efficiency of an optimal path is improved.
Owner:SOUTHWEST JIAOTONG UNIV
Method and device for determining forced lane changing afflux point of intelligent vehicle
The invention discloses a method and device for determining a forced lane changing afflux point of an intelligent vehicle. The method comprises the steps of obtaining the lane changing microscopic information of a target vehicle, and the lane changing microscopic information comprising the speed and position data of the target vehicle, a leading vehicle in a target lane and a following vehicle; calculating a critical safety gap between the target vehicle and the following vehicle in the target lane; according to the free lane change type and the forced lane change type, calculating a polite factor mean value of the effective lane change number; determining a weight coefficient representing a driving characteristic, and calculating a polite factor of forced lane changing of the current intelligent vehicle; and according to the position relationship between the target vehicle and the leading vehicle in the target lane, calculating and determining the afflux point of forced lane changingof the current intelligent vehicle. According to the method provided by the invention, the interaction between the lane changing vehicle and the front and rear vehicles in the target lane is comprehensively considered, the lane changing afflux point selection is more accurate, a scientific and reasonable judgment and decision basis is provided for a driver or the intelligent vehicle, and a guarantee is provided for road traffic safety and driving efficiency.
Owner:SOUTHEAST UNIV
"Multi-rule integration into one" region space planning data GIS-gravitational field analysis model
InactiveCN108805983APrecise landingConvenient researchForecasting3D modellingComputational scienceThree-dimensional space
The invention relates to a construction method of a "multi-rule integration into one" region space planning data GIS-gravitational field analysis model . The method includes: step 1, collecting data,wherein site data are collected; step 2, using the collected site data to establish a three-dimensional space model; and step 3, constructing a gravitational field model. According to the method, ARCGIS and the gravitational field model are utilized for series analysis, perfect superposition of satellite remote-sensing pictures and DEM is realized, a more intuitive and stereoscopic three-dimensional representation of an existing site is established, thus more efficient space analysis and efficient management of integrated information can be realized, and thus an optimal path can be selected.
Owner:SOUTHWEST JIAOTONG UNIV
Waste power battery consistency index optimization method based on clustering and an average entropy ratio
InactiveCN109583756ABroaden your optionsReasonable designSustainable waste treatmentResourcesPower batteryConsistency index
The invention discloses a waste power battery consistency index optimization method based on clustering and an average entropy ratio, and relates to the field of waste power battery index evaluation,which comprises the following steps: index sea selection: any index related to battery attributes can be included into an alternative index library; Primarily selecting, rejecting invalid indexes suchas data unavailability and the like; Screening is conducted, and indexes with redundant information amount larger than a threshold value are deleted through correlation analysis and clustering analysis; optimal selection, the average entropy ratio is calculated, and an index with the highest significance is reserved and selected in combination with a clustering analysis map. According to the method, the indexes are selected in an open manner, the design is reasonable, and more scientific and more effective battery consistency evaluation indexes are obtained through a series of quantitative analysis.
Owner:济宁市创启信息科技有限公司
Probiotics-containing health cat food
PendingCN112617039AImprove immunityGuaranteed healthy growthFood processingAnimal feeding stuffBiotechnologyBacillus licheniformis
The invention discloses a probiotics-containing health cat food which comprises the following components in parts by weight: 5-40 parts of animal protein, 10-20 parts of vegetable protein, 3-50 parts of carbohydrate, 1-10 parts of linseed oil, 0.02-0.1 part of antioxidant, 0.005-0.01 part of compound vitamin, 0.005-0.01 part of mineral substance, 0.5-1 part of Chinese herbal medicine and 1-2 parts of seafood seasoning, and probiotics are added. The probiotics are added according to the following ratio: bacillus subtilis 10-20 billion CFU / kg; and bacillus licheniformis 100-200 billion cfu / kg. The cat food is balanced and comprehensive in nutrition, delicious and tasty, has a health-care function, and can improve immunity, strengthen disease resistance of a pet, enhance appetite of the pet and help digestion of the pet, so as to make the pet lively and active, body strong, and fur smooth and soft.
Owner:SHANGHAI SHENYA ANIMAL HEALTH PROD FUYANG CO LTD
Tire curing bladder and preparation technology thereof
The invention provides a tire curing bladder and a preparation technology thereof, and belongs to the technical field of rubber tires. The technology includes two stages, wherein in the first stage, 268 butyl rubber IIR, 1 / 2 carbon black N330, 1 / 2 carbon black N330 and other materials except 202 resin are added in sequence; in the second stage, first-stage rubber is added, filtering is carried out, the 202 resin is added, standing is carried out, and curing is carried out. The curing bladder and the preparation technology thereof have the advantages that the materials are scientific and environmentally, the cost is low, the economic benefit is good, and the yield is high. The tire curing bladder and the preparation technology thereof are reasonable in design, the raw materials are easy toobtain, the formula is simple, the safety and reliability are achieved, the technology is convenient to operate and easy to master, and the application and popularization value is good.
Owner:山东汉正橡胶工业有限公司
Industrial land performance evaluation method and evaluation device
The invention provides an industrial land performance evaluation method and an industrial land performance evaluation device. The industrial land performance evaluation method comprises the followingsteps: S1, determining an evaluation object and an evaluation unit; S2, constructing an industrial land performance evaluation index system; S3, obtaining evaluation index values through multiple ways; S4, determining an evaluation index weight and performing index standardization processing; S5, calculating and grading performance evaluation scores of the industrial land; S6, correcting evaluation results. Through performance evaluation, the land is determined by an enterprise, and the enterprise is managed according to the land. Enterprise saving intensive development is guided, element resource utilization benefits are improved, and enterprise high-quality development is promoted; industrial land management is better served, orderly development of low-efficiency industrial land redevelopment work is promoted, and industrial transformation and upgrading are promoted.
Owner:时空云科技有限公司
Uniformity analysis method of three-dimensional observation system
The invention provides a uniformity quantitative analysis method of a three-dimensional observation system. The uniformity quantitative analysis method is as follows: by calculating non-uniformity coefficient of coverage time distribution, non-uniformity coefficient of geophone offset distribution, non-uniformity coefficient of azimuth angle distribution and non-uniformity coefficient of geophonecoverage, analyzing the distribution uniformity of coverage time, the geophone offset, the azimuth angle and the geophone coverage of the three-dimensional observation system qualitatively and quantitatively from two levels of a single surface element and a plurality of surface elements, instructing the design of the observation system, and providing basis of judgment for the accuracy of acquisition construction, so that the selection of the three-dimensional observation system can be more scientific, reasonable and objective.
Owner:CHINA PETROCHEMICAL CORP +1
Method for manufacturing sausages with ordinary taste
The invention discloses a method for manufacturing sausages with an ordinary taste. The method comprises a pork selection system, a pork processing filling system and an airing processing system. Thepork selection system, the pork processing filling system and the airing processing system cooperate with each other, so that the manufacturing method of sausages is simpler and more convenient, and material selection is cleaner and more sanitary, and a manufacturing process is more convenient, and different tastes can be made according to the requirements of different people, and prepared sausages smell more fragrant and have a better mouth feel. Further, the pork selection system is connected to a pork position selection module and a pork type selection module, and pork is selected accordingto different positions of pork and types of fat pork or lean pork, so that pork selection is more scientific so as to meet different tastes, and the prepared sausages have different mouth feel. Further, a seasoning amount control module is connected to a seasoning mixing module, so that selected seasonings are fully mixed with the pork, and the seasonings enter the inside of the pork, and the pork tastes better in mouth feel.
Owner:JIANGSU JIUSIXIANG FOOD TECH
Near-infrared wavelength variable selection method based on continuous projection algorithm
ActiveCN103927438BOvercome deficienciesChoose scienceSpecial data processing applicationsLinear correlationAlgorithm
The invention discloses a near-infrared wavelength variable selection method based on a continuous projection algorithm. Using the weight value method, the whole spectrum is divided into three categories: correlated wavenumber point set, irrelevant wavenumber point set, and noise wavenumber point set, and the wavenumber point set is selected from the "correlated wavenumber point set" and "irrelevant wavenumber point set" to establish a calibration model , using orthogonal projection to judge the importance of the newly selected wavelength variable. This method overcomes the linear correlation, effectively reduces the data dimension, extracts the interpretation information to the maximum extent, and ensures the establishment of a correction model with high robustness.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Economic analysis method based on omni-directional unequal-length leg tower
The invention relates to an economical efficiency analyzing method based on a comprehensive unequal length spliced leg iron tower. The economical efficiency analyzing method is characterized by comprising the following steps that (S01) influences of comprehensive unequal length spliced legs on the weight and foundation force of the iron tower are analyzed; (S02) oriented to different terrain gradients, the difference of work amounts when the two spliced leg modes of long and short legs and flat legs is analyzed; (S03) oriented to different terrain gradients, the economical efficiency of adopting the two spliced leg modes of the long and short legs and the flat legs is analyzed. The economical efficiency analyzing method based on the comprehensive unequal length spliced leg iron tower can effectively provide a scientific and reasonable reference standard for selecting the iron tower spliced leg mode, the suitable iron tower spliced leg mode can be selected more scientifically and more conveniently, and thus the effects of saving project investment and improving environment friendliness are achieved.
Owner:STATE GRID CORP OF CHINA +2
Method for realizing communication between mobile terminals by using fm and mobile terminal
ActiveCN104113633BTroubleshoot poor signal qualityChoose scienceSubstation equipmentSignal qualityComputer terminal
Owner:LENOVO MOBILE COMM TECH
Principal Component and Maximum Entropy Ratio of Stock Market Investor Sentiment Proxy Index Selection Method
InactiveCN109102147AWiden your optionsImprove representationFinanceResourcesIndex selectionCorrelation analysis
The invention relates to a principal component and maximum entropy ratio stock market investor sentiment surrogate index selection method, which relates to the field of stock market investor sentimentmeasurement, comprising the following steps: index selection; any index related to stock market or investor being brought into a candidate index database; primary selection, excluding invalid indicators whose data are not available or whose data are not continuous; screening, rejecting irrelevant indexes by irrelevant analysis; selection, through correlation analysis and clustering analysis to remove redundant information more than the threshold of the index; the ratio of information entropy to maximum entropy being calculated by principal component analysis, and the index with the highest significance being retained by cluster analysis. The open selection index is reasonable in design, and the reserved quantity of the index is determined through a series of quantitative analysis, so as to obtain a more scientific, more inclusive and broader proxy index for investor sentiment measurement.
Owner:济宁市创启信息科技有限公司
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