States that using relative statistic technology to carry out data analysis is the important means to successively improve and perfect quality system and enhance market competition.

Traffic generation intensity and attraction intensity are applied to the model of significance of highway segment aiming at its defects in the gross theory,through which the influences of economics and land characteristic of node on traffic assignment can be reflected more truly,and the precision of traffic assignment can be improved.

A Study on Tzu-chun s Arias of Opera Regret for the Past;

Having a good command of these classic arias can help us to know better about that opera,so the author holds the viewpoint that,good singing skills are the vital guarantee for understanding the singing style of Mozart\'s operas.