Technicians decided to introduce model-free control technology in the control system.

This paper deals with the extraction of the seismic attributions, describes their physical significance, studies the relationships between seismic velocity, density and seismic attributions by using model technology, analyses geological implications of seismic attributions, and provides grounds for analysing and selecting seismic attributions in practical application.

Research thinking for prediction of groundwater system regime is suggested herein based upon the requirements of model technology, which is applied by the author to the prediction of groundwater system regime of certain city with satisfactory outcome.

Combining ITIL theory with the special circumstance of Chinese universities,this paper brings forward the organization model,flow model,technical model of IT service management for Chinese universities.

From the view that the process of system development is a socio-technical system,this paper systematicly analyzes the common risk factors of information systems development projects based on the socio-technical model of organizational change,which helps IS project managers to identify and control project risks effectively.

<Abstrcat>Using the kinematics parameters of back-style high jump,the author established the technical model of approach and take-off movement of excellent back-style high jumpers both in China and aboard.