台灣地區強地動研究整合計畫－譜震度與活斷層區應變分佈之研究

CNU IR > College of Sustainable Environment and Recreation > Dept. of Recreation and Health-Care Management > MOST Project > Item 310902800/2530

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Title:	台灣地區強地動研究整合計畫－譜震度與活斷層區應變分佈之研究 Comparative Study of PGA Attenuation Relations Deduced from Least Squares Method and Genetic Algorithm
Authors:	葉永田
Contributors:	休閒保健管理系
Keywords:	Attenuation Law Regression analysis Peak Ground Acceleration Genetic Algorithm
Date:	2007
Issue Date:	2008-07-31 16:50:45 (UTC+8)
Publisher:	台南縣：嘉南藥理科技大學休閒保健管理系
Abstract:	In engineering applications, attenuation relationship is one of the key elements in a seismic hazard analysis. However, it is difficult to find the optimal solution of coefficients in attenuation model using traditional mathematical methods because of its nonlinearity. Besides, it is not reasonable to use unweighted regression analysis in which each recording carried an equal weight due to nonuniform distribution of data with respect to distance. In this study, least squares method (LSM) and genetic algorithm (GA) are employed as nonlinear regression methods to find the optimal solution of parameters in attenuation model to compare the robustness and predicted accuracy of the two methods. Different weights (equal and unequal weights) of each recording were used to compare the adaptability of the weights for practical application. Considering the hazard and energy radiation of an earthquake, the unequal weight of each recording are defined as function of distance. Moreover, the regression analysis of horizontal peak ground acceleration (PGA) attenuation model in southwest Taiwan was studied.
Relation:	計畫編號：NSC96-2119-M-041-001
Appears in Collections:	[Dept. of Recreation and Health-Care Management] MOST Project

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