نتایج جستجو برای: risk quotient
تعداد نتایج: 955172 فیلتر نتایج به سال:
Background and Objective: Street dust is an important factor in urban pollution which consists of soil, particulate matters and heavy metals. At present, over half of the world’s population lives in urban areas. Therefore, this study aimed to investigate health risks of heavy metals in street dusts in Zahedan. Materials and Methods: The samples of street dust were collected in Zahedan. After p...
To evaluate the variation in ecological risk induced by pollutants from construction of Baihetan Dam, largest hydropower station under world, this study proposes a fuzzy hazard quotient (HQ) model designed on basis triangular number (TFN) theory. The HQ uses hazardous TFN to including uncertain observation data, and transition analyze before after dam construction. results show following: (i) a...
In this paper, we prove that any BL-general fuzzy automaton (BL-GFA) and its quotient have the same behavior. In addition, we obtain the minimal quotient BL-GFA and minimal quotient transformation of the BL-GFA, considering the notion of maximal admissible partition. Furthermore, we show that the number of input symbols and time complexity of the minimal quotient transformation of a BL-GFA are ...
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