土壤中重金属污染源辨识的数学模型  

Mathematics Model in Source Identification of Soil Heavy Metals

作　　者：汤天任[1] 宋诗韵[1] 王军[1] 

机构地区：[1]安徽师范大学数学计算机科学学院,芜湖241000

出　　处：《计算机与数字工程》2012年第12期25-28,共4页Computer & Digital Engineering

摘　　要：建立了基于坐标旋转下高斯分布函数的土壤表层重金属污染物点源扩散模型,并利用MATLAB中的非线性极小拟合方法得到模型参数,进而求得污染源的具体位置。以2011年高教社杯全国大学生数学建模竞赛A题数据为例,计算结果表明,旋转后的高斯分布函数拟合精度显著提高,从而为准确探究污染源及位置提供了新的途径。The paper is concerned with establishing the model about the spread of heavy metal pollutants based on revolving Gaussian distribution function.The parameters in the model are obtained through a nonlinear fitting method in MATLAB in order to find out the location of the pollution sources.Take data in CUMCM-2011 Part A as an example,result shows that the model of revolving Gaussian distribution has high precision of fitting.Thus a new way is provided with locating the pollution sources.

关 键 词：重金属污染 污染源 高斯分布函数 非线性拟合 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]