In order to solve the problem of requirement prediction and supply of spare parts in the electromechanical product market cycle,the service age distribution and replacement rate of the parts were investigated based on their time-to-failure density function,and the model of spare part requirement prediction for electromechanical products market cycle was developed.

In this paper, based on the coordination and integration of the supply chain, an optimization model for distribution network design in which single manufacturer, multi-products, multi-distributors, multi-customers and demand allocation is considered is put forward.

In this paper, from the standpoint of integration and coordination of the supply chain, an optimization model for bi level distribution network design in which demand allocation is considered is put forward.

Based on the sample of 1000 employees from 22 Chinese organizations,this paper compares the effect of value congruence,need-supply fit,and demand-ability fit for predicting the employees\' job satisfaction.

Research of use case modeling and application in software requirement analysis;

Acquiring software requirement is an important step during software development.

A Study on Modeling Software Requirements Based on Scenario & Formal Method;

The software requirements is very important in the the entire life cycle of software products,and that has decisive significance for the follow-up of software development and maintenance.

The basic idea of this method is that software requirements should not be proposed by stakeholders subjectively,but be elicited followi.