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In this paper, a system identification method based on BP-network is proposed to realize the study of dynamic characteristics of high power LED luminaire. LED input-output characteristic relations are obtained according to the lighting system structure, and response curves are received using the method of input isolation. A Back Propagation network model is established to simulate input and output...
Through using the ArcGIS software as the platform, and taking DEM analysis, raster calculation and spatial interpolation of spatial analysis technology as the core method, this paper selects Menghai County as the study area, combines with the Delphi method, analytic hierarchy process, fuzzy membership function, farmland Integrated Fertility Index ( IFI ) and other methods, to establish major factors...
currently, most LED controllers for the metro carriage display are driven directly by I/0 of MCU and the display interface is very simple, therefore it's difficult to meet the multiform requirements of video terminal. In order to meet this requirement, this paper designed the software system of new type metro display LED controller based on Ethernet, analyzed its function and achieved an implementation...
DDGS is the major co product generated from the fermentation of grain, but it is high in protein and an inexpensive source of protein. To optimize the extracting process of protein from DDGS, Response surface methodology (RSM) has been developed using the three influential process variables: alkali concentration, extraction time and solid-liquid ratio. The properties of the protein were further investigated...
Trust is a key constraining factor in the development of electronic commerce. The parties must establish a certain trust model between each other before the beginning of transaction. This paper analyses the advantages and deficiencies of existing models, and presents a trust model for E-commerce based on Bayesian network. The model is based on Bayesian network and conditional probability formula,...
We can find potential relationship behind the data by data mining for e-commerce, so adjust dynamically web page structure, improve service, and meet better consumer demand. This paper discusses the data resources used by data mining in e-commerce and their characteristics, gives the basic process of data mining, analysing e-commerce data mining techniques used, at last points out the current problems...
Currently, in the evaluation of excellent courses in colleges in our country has already formatted a specialized of nation excellent courses evaluation system. From 2003 the nation evaluation system of excellent course started beginning, with the gradually development and abundance also promote the construction of excellent courses in colleges. Therefore, this paper is set from the current excellent...
Currently, the performance evaluation have already become the important means of investigation employee's performance, performance evaluation could contribute to the realization of a business' target, exaltation of business performance and improvement of employees' behavior, promotion of ability. Teaching resource performance evaluation in colleges also becomes research of current education focus...
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