Generally there are three experiential curve models in engineering: hyperbola model, exponent model and Xing-Ye model.

The author carries out the post-construction settlement prediction of the typical section of the expressway soft soil roadbed by using the Hushino method and the hyperbolic method,and analyzes the prediction error based on the measured data,obtains the applicability of two methods and the selection method of the starting time of the hyperbolic method.

In order to solve the problems of visual field detection in product design,a visual field model-a model that is able to truly reflect human visual field-is constructed,and the technique of dynamic visual field detection is re- searched.

An Association Rules Mining Method Based on Star Schema;

The Tool for Interactive Construction and Implemention of a star schema will offer a web-based user interface to design a data warehouse star schema from the schemas of some existing operational database.

But the corrective and natural changing of dimensional tables based on star schema make the aggregate data false.

Aimed at a typical application of data warehouse,an algorithm is proposed which utilizes key attribute index as HASH variable to construct star model of data warehouse.

The star model method proposed in this paper make use of the features that different context vales in the same context type have functional relation to perform context translation which can extremely reduce the amount of pre-definition translation rules and gain better flexibility,extensibility and maintainability.