Volume 14, Issue 4 (2012)
JAST 2012, 14(4): 715-726 |
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Su X Y, Wu J Y, Zhang H J, Li Z Q, Sun X H, Deng Y. Assessment of Grain Security in China by Using the AHP and DST Methods. JAST 2012; 14 (4) :715-726
URL: http://jast.modares.ac.ir/article-23-1978-en.html
URL: http://jast.modares.ac.ir/article-23-1978-en.html
1- Department of Electronics Information and Electric Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People's Republic of China.
2- Hangzhou Key Lab of E-Business and Information Security, Hangzhou Normal University, 16 Xuelin Road, Hangzhou, 310036, People's Republic of China.
3- Key Laboratory of Digital Agricultural Early-warning Technology, Ministry of Agriculture, 12 South Street, Zhongguancun, Haidian District, Beijing, 100081, People's Republic of China.
4- Department of Food Science and Technology, College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China.
5- Department of Computer and Information Sciences, Southwest University, Chongqing, People's Republic of China.
2- Hangzhou Key Lab of E-Business and Information Security, Hangzhou Normal University, 16 Xuelin Road, Hangzhou, 310036, People's Republic of China.
3- Key Laboratory of Digital Agricultural Early-warning Technology, Ministry of Agriculture, 12 South Street, Zhongguancun, Haidian District, Beijing, 100081, People's Republic of China.
4- Department of Food Science and Technology, College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China.
5- Department of Computer and Information Sciences, Southwest University, Chongqing, People's Republic of China.
Abstract: (6613 Views)
China is one of the largest grain producing and consuming nations in the world and the importance of grain security to the Chinese can never be overemphasized. In this paper, we present a comprehensive early-warning model for evaluating the status of grain security in China. The model is based on the analytic hierarchy process (AHP) method and the Dempster–Shafer theory (DST). We divided the risk assessment into four stages. First, we seek risk sources and identify the indices to be used in the model. Then, we preprocess the index data to obtain the index directions and risk bounds. After that, we assign index weights via AHP method. Finally, we evaluate risk of grain security via DST method and determine the overall risk degree. An empirical analysis is conducted to demonstrate the use of the model for evaluating the status of grain security in China. The result shows that the model which conforms to the reality of China is effective and can be used as a grain security pre-warning monitoring tool.
Keywords: Analytic Hierarchy Process, China, Dempster-Shafer theory, Grain security, Risk assessment
Article Type: Research Paper |
Subject:
Food Science and Technology
Received: 2011/03/30 | Accepted: 2011/09/21 | Published: 2012/04/8
Received: 2011/03/30 | Accepted: 2011/09/21 | Published: 2012/04/8
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