Description: Das Projekt "Bewertung der Schadschoepfung" wird vom Umweltbundesamt gefördert und von Carbotech - Umweltanalytik, Beratung und interdisziplinäre Projekte durchgeführt. Leading Questions: Which aspects must be included in ecological valuations? How depends the result and the accuracy from system boundaries, examined aspects and so on? Abstract: The purpose of this project is to show the possible application fields of the fuzzy set theory in ecological valuations (LCA). This application fields are to be demonstrated in the coordinated project 'LCA of the Feldschloesschen-brewery'. Our work focuses on two topics of ecological modeling: a) Threshold values (TV) are used in LCA methods as weighting parameters to put emissions of different harmful substances in one single 'scale of harm'. The purpose of TV, to protect the whole nature, is defined linguistically by the law. Fuzzy Sets are a much better representation of linguistic definitions than crisp numbers. The modeling of specifical fuzzy-TVs, their synthesis to one TV and the extraction of a crisply defined TV has shown that the fuzzy set theory can be used as a flexible tool for modeling of the meaning of an TV. b) Complex systems in LCAs are sometimes difficult to define. The problems are the inclusion of qualitative data and the lack of exact knowledge about nature. With knowledge-based systems it is possible to 'build' intuitive models based on expert knowledge and to use qualitative data and estimations together with exact data. It is also possible to include synergetic effects which are known only qualitatively. Such a fuzzy model has been constructed for an LCA of Swiss agriculture. Complementary information: Development of a new valuation method on the basis of Fuzzy logic. This mathematical concept allows a better representation of the real world.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Synergistische Wirkung ? Lack ? Schweiz ? Schadstoffemission ? Umweltchemikalien ? Industrie ? Ökobilanz ? Betriebswirtschaft ? Bewertungskriterium ? Bewertungsverfahren ? Daten ? Emission ? Ökologische Bewertung ? Umweltökonomie ? Umweltanalytik ? Modellierung ? Kenngröße ? Landwirtschaft ? Lebenszyklus ? Schwellenwert ? Umweltverträglichkeit ? Schadstoff ? Fuzzy-Set-Theorie ? biogeochemical processes ? problematic substances ? theorie of sciences ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1993-01-01 - 1995-12-31
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