This paper proposes a demand prediction system considering multimodal transportation, designs the computational software through improving the conventional four-step planning method and presents the method of balancing between transportation supply and demand.

A new transport volume prediction model is constructed bycombining neural networks and four-stage predict method.

The two stage method of the damage identification of highway bridge based on improved genetic algorithms;

This paper presents a method for getting initial basic feasible solution of linear programming problem with an artificial variable,comparing with a traditional two-stage way,it has low computation amount and needs less memory cells for computing,and improve two-stage way simple method.

This paper presents a method for seeking initial basic feasible solution of linear programming problem without using artificial variable,comparing with traditional two-stage way,it has low computation amount and needs less memory cells for computing,so it is an improved two-stage way of the first period question.