|Table of Contents|

Relationship of concentration and membership degree of pollutant in fuzzy environment quality assessment

《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

Issue:
2013年05期
Page:
772-
Research Field:
Publishing date:

Info

Title:
Relationship of concentration and membership degree of pollutant in fuzzy environment quality assessment
Author(s):
Bu Quanmin1; 2; Tong Xing1; 2
1.School of Government; 2.Center for Social Risk and Public Crisis Management, Nanjing University,Nanjing 210023,China
Keywords:
pollutants;  concentration;  harm degree;  membership degree
PACS:
X820.2
DOI:
-
Abstract:
When the corresponding concentration state for the most serious pollution in national standards is taken as the extreme value,the membership degree is namely the degree belonging to the most serious pollution or obvious harm at any pollution concentration.In this paper,the membership function expresses the relationship of the harm degree and the concentration.The type of the membership function is determined by analyzing the pollutant harm on human and surrounding environment.The DLA model is suitable for the diffusion-aggregation of particles with the constant pollution source.Therefore the NN-DLA model without constant source of pollution is more suitable for describing the accumulation process of body pollutants,and statistical laws of bonding frequency of the particle are determined based on a particle relatively closer to a fixed particle.The relative distance is connected to the concentration and the bonding frequency is connected to the membership degree.

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Last Update: 2013-10-31