Specially we characterize the analytic relation between the solution space scale and the fixed points of the system in the case of the needle-in-a-haystack fitness function.

Analyzing ocean fishing an d economy of fishery regions under the grievous influences of fishery treats of S ino-Japan and Sino-Korea in Zhejiang Province,the paper discussing basic idea to cope with it and put forward some policies and measures to take temporary solution and effect a permanent cure,to block up and dredge object,and to adv ance transferring fishermen s job.

Through the investigation of the jellyfish catching in Liaodong gulf and the main line of the fishery resources characteristic, this paper discussed the economic behavior and social conflict on fisherman and revealed the shortage of existing jellyfish management system.