Fuzzy Assessment of Heavy Metal Pollution
محورهای موضوعی : مجله بین المللی ریاضیات صنعتی
Gh. Hesamian
1
,
M. G. Akbari
2
,
M. Shams
3
1 - Department of Statistics, Payame Noor University, Tehran, Iran.
2 - Department of Mathematical Sciences, University of Birjand, Birjand, Iran.
3 - Department of Statistics, Faculty of Mathematical Sciences, University of Kashan, Kashan, Iran.
کلید واژه: Fuzzy contamination, Triangular fuzzy number, Degree of belonging, Fuzzy pollution criterion,
چکیده مقاله :
The present work is aimed to extend the common pollution indices into the fuzzy environment. For this purpose, a method was developed for converting the heavy metal contamination in soil by fuzzy numbers. Then, the most commonly used pollution indices are defined as fuzzy numbers by applying the alpha-cuts approach. To evaluate the degree of heavy metal contamination in a specific level, a degree of belonging was also suggested.
هدف این مقاله تعمیم شاخصهای آلودگی و تفسیر آنها به محیط فازی است. برای این منظور، ابتدا میزان فلزات سنگین در خاک توسط اعداد فازی اندازه گیری شدند. سپس، رایجترین شاخصهای آلودگی را با استفاده از روش آلفا-برش‌ها توسط اعداد فازی تعریف شدند. برای ارزیابی میزان آلودگی فلزات سنگین در یک سطح خاص، درجهای از تعلق نیز پیشنهاد شد. در نهایت، روش پیشنهادی با یک مثال کاربردی مورد بررسی و تحلیل قرار گرفت.
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