The extended pole assignment method shows that poles of systems whose states are not controlled can be placed at a certain degree, and also indicates pole assignment steps.

Difficulties encountered and countermeasures adopted on river-crossing section for a shield driving from Luntou to Daxuecheng;

Difficulties and Recommendations on the Campus Network Management;

Difficulties of Old Single Men s Remarriage and the Countermeasures;

The difficulty and countermeasures in safe production and management of architecture construction enterprise;

Exploration of technical difficulty in the design and construction of Nanchang Shengmi major bridge;

Preparation difficulty of ropeway bridge for Shuhe hydropower project on Hanjiang River and its solution;