The mass transport process within boundary layer is the coupled effect of diffusion and convection actions.

Electromigration (EM) experiments,theoretical calculation and quantitative finite element analysis were applied to study the impact of current crowding on EM-induced mass transport along damascene Cu wires on the interface between Cu/TaN barrier layers.

In part one, Finite Cell Method (FCM) is used in simulating mass transport process in porous media with various porosity.

This paper studies the second stage sampling methods used in the two stage sampling survey for waterway transportation volume.

Through the investigation and study on the spot, on the basis of analyzing the future development of social ecnomy and transportation, especialy the highway transportation, the development of highway transportation volume in future three feature year in Xi an city is predicted by scientific predicting method.

The paper depends on Heilongjiang Province transport department science and technology project“Heilongjiang Province region highway transportation volume survey and statistical method research”.

According to the basic character that freight volume possesses regularity under certain social,economic and traffic condition,a system forcast method gradual synthetical forcast method in which various informations are fully used is presented.