This paper generally outlines the appearance of the interior-point algorithm for linear programming which is a lively discussed problem internationally in field of mathematical programming since the eighties of last century.

Application of nonlinear programming method in the reactive power compensation optimization of mine high voltage distribution network;

By regression analysis of the experimental data of pullulan fermented in Aureobasidium pulluans fermentation medium with the nonlinear programming method,the expression model of functional relation between polysaccharide conversion rate and the medium composition is set up,then the optimization medium is selected out with the nonlinear programming method again.

The nonlinear programming method is adopted to solve the model, and realizes optimization distribution of various water resourses, combining the real situation of the dist.

The nonlinear programming algorithm for the regression analysis of the experiment data and the optimum solution of the regression model is given.

For the purpose in minimizing total resistance of a full-scale ship,an optimal design method is proposed based on linear wave-making resistance theory and on nonlinear programming(NLP).