Traditional methods of open equation modeling have great limitations in the maintenance and reuse of models, especially for large-scale modeling problems.

A Community Satisfaction Model Based on Simultaneous Equations;

We try to research empirically and illustrate the relationship between the environmental and economic performance of firm through building the simultaneous equations and adopting the datas of the European some country and Chinese some region paper industry.

The article presents a simultaneous determination method for three kinds of water-soluble dyes: acid red, acid brown and acid black by solving simultaneous equations using a UV-VIS spectrophotometer.

Using the method of stepwise regression the regression equation was established to analyze the influence degree of chemical component to hardenability of 40MnBH steel The simultaneous equation of component inter control regulation was deduced by means of probability analysis The percent of pass of hardenability beyond 97 5% was achive

The methods for determining the reagents whose purity is known and for solving the simultaneous equations of the areas of chromatographic peaks,correction factors and the total amounts of all components are mainly studied mainly.

This paper applies simultaneous equations to build a system model on IRTU.