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Integrated Evaluation of Urban Air Pollution and Module Building

Author: YangGuiHua
Tutor: HuangJinJie
School: Harbin University of Science and Technology
Course: Systems Engineering
Keywords: Air Pollution Gaussian diffusion model Fuzzy Evaluation Element model
CLC: X823
Type: Master's thesis
Year: 2010
Downloads: 197
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Abstract


Along with the acceleration of the process of socio-economic development and urbanization , the urban environment pollution prevention issues become increasingly prominent . However , due to the complexity of the problem of environmental pollution , involving many factors , not yet a universal comprehensive evaluation model to achieve a comprehensive judgment on the different pollution . To solve these problems , the typical model of urban air pollution , the representation of urban air pollution , as well as evaluating the in-depth study , these work provides practical solutions for urban air pollution modeling and assessment of environmental data . First, in order to unify their understanding in the process of urban atmospheric model and data , proposed the classical Gaussian diffusion model is estimated as the concentration of air pollutants diffusion model analysis of the sources of pollution parameters , meteorological factors and monitoring points parameters affect the concentration of pollutants the relationship between the elements of air pollution for urban air pollution modeling domain knowledge ; followed in order to achieve a valid assessment of the degree of urban pollution , state departments of various typical pollutant emission value limit of the reference value , fuzzy evaluation method to construct a plurality of membership functions . Evaluation indicators membership function membership form a fuzzy relation matrix, based on the the estimates constructed weight coefficient matrix , fuzzy operation , you can get the results of the assessment of the extent of urban pollution . More intuitive to reflect this process , the authors use the VB language to build a simple evaluation system , the system integration of a Gaussian Estimation of the concentration of pollutants and the pollution level evaluation fuzzy discriminant matrix method , for different meteorological source strength conditions draw the corresponding experimental results . Finally, in order to achieve reusability meta-model - based urban environmental pollution modeling assessment method , system , meta- model of the air pollution impact factor . Own the properties , behavior , interaction and constraint characteristics based on the Gaussian atmospheric pollution model abstract draw element model of the air pollution impact factor , take full account of the relevant provisions of the evaluation level of air pollution in the urban environment , the use of meta - modeling techniques , you can build the meta-model - based evaluation platform of urban air pollution .

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > Atmospheric evaluation
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