Notice of RetractionSet Pair Analysis for Rural Drinking Water Quality
A large number of uncertain problems existing in rural drinking water safety system, it is of great significances to apply Set Pair Analysis (SPA) theory to analyze and study these uncertain problems in rural drinking water safety system. This study applies SPA theory to conduct an integrated evaluation of water quality to rural drinking water safety in Ya'an City, based on classification values of Sanitary Standard for Drinking Water (GB5749-85). This study has worked efficiently in practice. Compared with the same kind of methods which have been found, this paper has the outstanding results for the uncertain problems of health risk assessment of the rural drinking water safety.
Systems information in set pair analysis and its applications
The problem of uncertainty knowledge has been tackled for a long time by philosophers, logicians and mathematicians. Recently it becomes a crucial issue for computer scientists, particularly in the area of artificial intelligence (AI). The set pair analysis (SPA) theory, proposed by Keqin Zhao, is a novel uncertainty theory. The core of this theory is to consider certainties and uncertainties as a certain-uncertain system, and to depict uniformly all kinds of uncertainties such as random uncertainty, fuzzy uncertainty, indeterminate-known uncertainty, unknown and unexpected incident uncertainty, and uncertainty that results from imperfective information, using a connection degree formula that can fully embody its idea. SPA has been applied to many fields successfully such as industry, agriculture, forestry, education, physical education, military affairs, traffic, data fusion, decision-making, forecasting, comprehensive evaluation, and network planning, etc. The reason is that there exists abundant systems information such as system structure information, system theory information, etc, in SPA. In this paper, the systems information in SPA is discussed, and its applications are also given.
Study on the Comprehensive Benefits of Harvesting and Skidding Operation in Xutting Area
Based on the calulation of economical benefits and ecological benefits of different operational models,which include economical benefits and ecological benefits,wer calulated and evaluated in this paper,which provides the scientific scheme for detemining the prodective etchnology in cutting area.The results showed that the clear cutting operation by suspended cableway sidding is presently the optimum mldol,which is suitable to be used in the north of Fujina province and other areas.But the selection cutting with manual skidding is the opeimum model for long range advantage.