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49 results about "Location factor" patented technology

Location factors are the sum of all factors that an enterprise considers when choosing a location, for setting up a new plant, office, warehouse or distribution centre.

Audio/video intelligent catalog information acquisition method facing to wide area network

The invention relates to an audio / video intelligent catalog information acquisition method facing to a wide area network, belonging to the field of computer application, which is characterized in that a weighting algorithm based on position factors of keyword characteristic items is offered; different weighting factors are endowed to the characteristics of different positions in a file so that the theme similarity of webpage contents can be more accurately calculated; a link with higher theme similarity is optimally selected by comprehensively utilizing three aspects of the factors of the similarity of the webpage contents, the URL (Uniform Resource Locator) catalog level information of an ultra-link and the anchor text information of the ultra-link; the cataloguing information of the searched theme webpage is automatically extracted by adopting an information extraction method based on the body and HTML (Hypertext Markup Language); and the extracted cataloguing information is standardized by adopting an improved semantic similarity calculation method. The invention has the advantages that the description item information can be intelligently and automatically provided to a lister; the labor capacity of workers is reduced; the cataloguing efficiency is enhanced; and the method can adapt to different requirements of professional and non-professional listers and wide area network environment.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Method for establishing location selecting model of mountain photovoltaic power station

InactiveCN103426039AMake up for the global solar radiation distributionMake up for the potential evaluation problem of photovoltaic power station constructionForecastingGeolocationDecision taking
The invention relates to the technical field of a space strategy supporting system in a geographic information system, in particular to a method for establishing a location selecting model of a mountain photovoltaic power station. The method comprises the following steps of conducting digital formalized description on a location factor and a corresponding index of the mountain photovoltaic power station according to the characteristics of the mountain photovoltaic power station; regarding a multidimensional location selecting index knowledge base, deriving a smallest location selecting property subset through a fuzzy rough set to replace an original property set on the basis that the location selecting classification capacity is not reduced, and obtaining a location selecting strategy list; extracting the corresponding property characteristic in the location selecting strategy list from a GIS, and establishing a membership degree function to evaluate and classify the station establishing potential of a specific geographical position. The method for establishing the location selecting model of the mountain photovoltaic power station can conduct quantitative relation derivation according to the situation that a plurality of micro and macro factors influence power generation amount of the power station to obtain a main influence factor. The space property relationship is analyzed based on a GIS data base, and direct strategy support to the location selecting of the mountain photovoltaic power station is provided.
Owner:YUNNAN NORMAL UNIV

Line interphase fault single-ended distance measurement method based on interphase fault location factor

The invention discloses a line interphase fault single-ended distance measurement method based on an interphase fault location factor. The method includes firstly, calculating the ratio of fault impedance, from an electric transmission line protection mounting position to an interphase short-circuit fault point, to line impedance, from the electric transmission line protection mounting position to an electric transmission line protection setting range, to acquire the electric transmission line interphase fault location factor b; selecting a fault location default value as lfault, and sequentially calculating the absolute values of [Zc1th(gamma1lfault) / Zc1th(gamma1lset)]-b of points on an electric transmission line by means of progressive increase of a fixed step length delta l until the total length of the electric transmission line is calculated; selecting the distance between the point with the maximum absolute value of [Zc1th(gamma1lfault) / Zc1th(gamma1lset)]-b on the electric transmission line and the electric transmission line protection mounting position as the fault distance. The method has the advantages that influences of electric transmission line interphase short-circuit fault point voltage, transition resistance and load current on electric transmission line interphase short-circuit fault single-ended distance measurement accuracy are eliminated theoretically, and the method has high distance measurement accuracy and is particularly applicable to interphase short-circuit fault single-ended distance measurement of extra-high-voltage alternating-current electric transmission lines.
Owner:STATE GRID CORP OF CHINA +2

Method for determining comprehensive reclamation utilization direction of coal mine temporary construction land

The invention discloses a method for determining a comprehensive reclamation utilization direction of a coal mine temporary construction land. The method comprises the following steps: taking a coal mine temporary construction map spot generated by using an inflection point coordinate of a to-be-reclaimed coal mine temporary construction land range as an evaluation unit; determining reclamation indexes of the evaluation unit in different reclamation directions according to reclamation factors including natural factors, location factors and environmental factors; calculating comprehensive ecological suitability indexes of the evaluation unit in different reclamation directions according to the determined reclamation indexes of the evaluation unit in different reclamation directions; and determining the comprehensive reclamation utilization direction according to the calculated comprehensive ecological suitability indexes of the evaluation unit in different reclamation directions. According to the method, visual description can be carried out in the reclamation utilization direction of the agricultural land, the reclamation utilization direction of a construction user and the reclamation utilization direction of the ecological land, and the advantages in the change trend can be analyzed, so that scientific reference and basis are provided for making a reclamation utilization decision of the temporary construction land of the coal mine.
Owner:CHONGQING NORMAL UNIVERSITY

A method for classifying audience of digital signage advertisements based on a neural network and a Huff model

The invention relates to a method for classifying audience of digital signboard advertisements based on a neural network and a Huff model. The method comprises the following steps: element selection and processing, model construction and model verification are carried out; spatialized digital signage location factors are constructed to obtain the standard grid grid layer of digital signage location factors, including its pixel value and corresponding coordinate value; the improved neural network model is used to calculate the normalized digital signage location factors, and the probability ofeach location containing a variety of audiences is obtained; then the influence of digital signage location on the audience without digital signage location is calculated by using the improved Huff model; then, the results of the two models, namely, the improved neural network model and the improved Huff model, are fused to complete the classification of the digital signboard advertisement audience; finally, the validity of the model is verified by using five validation indicators of the multi-label classification algorithm. The method of the invention comprehensively considers multi-source elements and spatial distance, has high accuracy of classification result, high efficiency of digital signboard advertisement placement and good digital signboard influence effect.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY

Sodium-cooled fast reactor fragment bed migration mechanism model

InactiveCN109785909ACalculation results are authentic and reliableCorrected static pressureChemical processes analysis/designComputational theoretical chemistryShear stressEngineering
The invention discloses a sodium-cooled fast reactor fragment bed migration mechanism model. The model is provided based on the shear strength concept widely adopted in soil mechanics. The stress analysis is carried out on the state of fragment particles in a fragment bed by combining the factors of particle density, size, shape and position, and a momentum exchange coefficient is introduced to calculate the drag effect of the fluid in the lower chamber of the reactor on fragment particle units. In this way, the shear strength and the shear stress of the fragment particle units after considering the flowing of the external fluid are obtained. And through stress analysis, comparing the calculated shear strength and internal shear stress of the fragment bed particles, and judging whether thefragment bed particles have migration and self-leveling phenomena or not. According to the method, the movement trend in the fragment bed migration process can be correctly predicted, the shape and the thickness in the lower chamber fragment bed migration process in the sodium-cooled fast reactor core disintegrating accident are effectively evaluated, and the problems that the simulation effect of the previous fragment bed migration phenomenon is poor and the reliability is not high are solved.
Owner:XI AN JIAOTONG UNIV

LTE system uplink power control method and system

The invention provides an LTE system uplink power control method and a system. The method comprises steps: the threshold I1 of interference from a terminal on a base station is preset; the base station periodically detects interference signals I from the terminal on the base station; when I is detected to be greater than I1, the base station sends a feedback message to a macro base station; the macro base station regulates the uplink power of the terminal according to the regulation range deltaT until I is smaller than I1; and the regulation range deltaT uses position factors of the base station and the terminal and the path loss ratio of the base station and the macro base station to the terminal to serve as the regulation basis. When the base station detects that the interference signals of the terminal on the base station exceed the interference threshold, the regulation range obtained when the macro base station uses the position factors of the base station and the terminal and the path loss ratio of the base station and the macro base station to the terminal to serve as the regulation basis regulates the uplink power of the terminal until the interference signals are reduced to the preset interference threshold, and the problem that overlarge terminal uplink power causes interference to uplink power transmission of the micro base station can be solved.
Owner:FUJIAN SUNNADA TECH CO LTD
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