Analog presentation of association fibers of human brain by the diffusion tensor magnetic resonance tractography;

Technology tracking is a useful method in identifying the current situation and trend of development in related technical areas,and ean help us provide the information decision-making support for establishment of technical strategy,but the in- depth research of technology tracking is not enough.

The article makes preliminary discussion on the mode of technology tracking,puts forward four kind of modes of technology tracking,simultaneously to analysis the influencing factors of technology tracking mode,forms the theory frame of the technology tracking mo.

Founded on concept explanation, the article makes preliminary discussion on the structure and process of technology tracking, developed tools of technology tracking based on patent quotation, which as a kind of technical analysis is fundamental to of technology strat.

In order to solve the problem of human-computer interaction in virtual assembly systems,driver classes for data glove and 3D tracker are formed,integrated with virtual assembly environment.