Fuzzy Comprehensive Evaluation Method and Its Application in Subjective Quality Assessment for Compressed Remote Sensing Images

2007 ◽  
Author(s):  
Liang Zhai ◽  
Xinming Tang
Keyword(s):  
Remote Sensing ◽  
Quality Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Subjective Quality ◽  
Remote Sensing Images ◽  
Subjective Quality Assessment ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method

scholarly journals A water quality assessment model for Suya Lake Reservoir

2020 ◽  
Vol 20 (8) ◽  
pp. 3715-3721
Author(s):  
Xiaolei Ji ◽  
Xin Wang ◽  
Guoping Yang
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Evaluation Method ◽  
Cold Water ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Water Quality Assessment ◽  
Assessment Model ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method

Abstract Reasonable water quality assessment of reservoirs plays an important part in strengthening water source management. Based on the monitoring data on the water quality in Suya Lake Reservoir provided by water quality environmental monitoring agencies, this paper selected typical water quality indexes such as dissolved oxygen, permanganate (CODMn), ammonia nitrogen (NH3-N), total phosphorus (TP) and total nitrogen (TN) as the water quality assessment factors, and applied the fuzzy comprehensive evaluation method to assess the quality of water in the Suya Lake Reservoir on the basis of single factor assessment. The result shows that the fuzzy comprehensive evaluation method can accurately quantify the fuzzy assessment of water quality. The main pollution factors in Suya Lake Reservoir are TP and TN, and pollution mainly occurs in the waters on the west bank of the reservoir (between the Cold Water River and the Lianjiang River), with the Huangxi River and its inlet being the most seriously polluted. This study provides some reference for the improvement to the water quality assessment model and scientific basis for the prevention and control of water environment pollution in the reservoir area.

Water Quality Assessment Based on Fuzzy Comprehensive Evaluation and Confidence Criteria

2012 ◽  
Vol 550-553 ◽  
pp. 2600-2603 ◽  
Author(s):  
Ben Lin Dai ◽  
Fei Hu Mu ◽  
Ning Xu ◽  
Yu Long He
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Water Quality Assessment ◽  
Water Area ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Water Quality Classification

Considering that the limits with determined water quality classification using maximum degree criteria in traditional fuzzy comprehensive evaluation method, a improved fuzzy comprehensive evaluation method for water quality assessment is established based on confidence criteria. The method can effectively avoid the problems that include the water quality unclear classification and the unreasonable result, etc. Finally, the water quality of Chaping River is taken as a case study and the assessment results show that the sections in Chaping River water area can be described into 3 “category Ⅰ”, 5 “category Ⅱ” and 2 “category Ⅲ” states in 2008.

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