In this paper,it suggests a new approach to measure individual crowding distance by edge weight of minimum spanning tree,and it is also improved crossover operator and mutation rate for NSGA-2.

This paper,which is on the basis of NSGA2,proposes a new strategy for generating new population,that is not only selecting a certain proportion of non-dominated individuals according to the crowding distance,but also choosing some other dominated but potential individuals to form the next generation.

Calculation of vapor heat capacity and equilibrium constants of association for alcohol using the model of molecular aggregation;

In order to meet requirement of Daqing Oilfield in the second and the third reservoir development,the interaction between high molecular weight polymers was studied,so were the molecular aggregation and solution properties.

In the present paper,a theory of solution for molecular aggregation is proposed based on both classical thermodynamic and molecular thermodynamic principles.