Document Detail


Construction of fuzzy membership functions for urban vehicular exhaust emissions modeling.
MedLine Citation:
PMID:  19603277     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This paper presents a method for constructing a membership function (MF) for the fuzzy sets that expert systems deal with. This paper introduces a Bezier curve-based mechanism for constructing MFs of convex normal fuzzy sets. The mechanism can fit any given data set with a minimum level of discrepancy. In the absence of data, the mechanism can be intuitively manipulated by the user to construct MFs with the desired shape. MFs have been developed using the proposed mechanism for urban vehicular exhaust emission modeling. It has been observed that all meteorological and vehicular parameters have either S-shaped MFs or Z-shaped MFs. Gaussian MF has been mostly applied for modeling air quality. The present study explored the application of fuzzy MF to analyze air pollution data from vehicular emission. The study reveals that S-shaped and Z-shaped MF can be used in addition to Gaussian MF.
Authors:
Suresh Jain; Mukesh Khare
Related Documents :
14767427 - Sampling for indoor fungi.
14712147 - Underestimation of standard errors in multi-site time series studies.
3704207 - Validation attempts of a generic approach for regulating air toxics.
15016437 - A qualitative tool combining an interaction matrix and a gis to map vulnerability to tr...
3444937 - On the use of the cause table in handling common cause events in system analysis.
8650297 - A formal theory of feature binding in object perception.
Publication Detail:
Type:  Journal Article     Date:  2009-07-15
Journal Detail:
Title:  Environmental monitoring and assessment     Volume:  167     ISSN:  1573-2959     ISO Abbreviation:  Environ Monit Assess     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-09     Completed Date:  2010-10-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508350     Medline TA:  Environ Monit Assess     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  691-9     Citation Subset:  IM    
Affiliation:
Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India. sureshj@teri.res.in
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Air Pollution / analysis
Algorithms
Environmental Monitoring / methods*
Models, Theoretical*
Vehicle Emissions / analysis*
Chemical
Reg. No./Substance:
0/Vehicle Emissions

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Alteration in hematology of Labeo rohita under stress of pollution from Lakes of Bangalore, Karnatak...
Next Document:  Macroalgae and DGT as indicators of available trace metals in marine coastal waters near a lead-zinc...