摘要
在科学实验及理论研究中常常需要对某一函数在一定自变量范围内的不同来源的数据进行比较与评价。本文提出了一种比较实验曲线或理论曲线间符合程度的方法———积分法 ;对于多项式和Redlich Kister方程形式的曲线推导出了标准偏差计算公式 ;选取不同文献来源的环己烷 苯体系超额体积实验值 ,对它们在全浓度范围内的总体符合程度进行了评价。
A new method, the integration method, is suggested in this communication to evaluate the overall deviation between different curves as shown below:σ 2=1b-a∫ba[f 1(x)-f 2(x)]\+2 d xFormulas have been derived for functions in the forms of polynomial and Redlich Kister equation. As an example, experimental excess volumes from a variety of sources are used to perform the evaluation of their mutual consistence over the entire mole fraction range. Not restricted by the polynomial and the R\|K equation, the suggested method can be used universally in all forms of functions and within any range of concentration, temperature, or other concerned variables.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2001年第2期102-104,共3页
Computers and Applied Chemistry
基金
国家自然科学基金资助项目!(编号 :2 9973 0 19)
