Based on the review of controlling article, the thesis first analyzed the phenomenon and the cause of the oil losing in CZ OIL COMPANY, then built a controlling system to reduce the losing, and finally evaluated the effect of .

Reference Model of Municipal Sewerage Corporation Information System;

This paper studies the large hydro power plant optimal bidding strategy in power market in both "approximately full competition" and "monopolizing" market situations,which is the dynamic programming problem with coefficient.