Life Cycle Controlling von Produktionssystemen
In: Werkstattstechnik: wt, Band 96, Heft 7-8, S. 460-466
ISSN: 1436-4980
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In: Werkstattstechnik: wt, Band 96, Heft 7-8, S. 460-466
ISSN: 1436-4980
In: The Scandinavian Journal of Economics, Band 120, Heft 4, S. 1139-1170
SSRN
In: Life Cycle Assessment Handbook, S. 67-103
In: Population: revue bimestrielle de l'Institut National d'Etudes Démographiques. French edition, Band 34, Heft 6, S. 1173
ISSN: 0718-6568, 1957-7966
In: Werkstattstechnik: wt, Band 96, Heft 4, S. 178-182
ISSN: 1436-4980
In: Design of Sustainable Product Life Cycles, S. 83-115
In: Journal of labor economics: JOLE, Band 31, Heft 4, S. 843-882
ISSN: 1537-5307
In: Explorations in Sociology Ser.
In: Life Cycle Assessment Handbook, S. 453-474
In: Werkstattstechnik: wt, Band 96, Heft 7-8, S. 435-440
ISSN: 1436-4980
SSRN
In: NBER macroeconomics annual, Band 19, S. 486-489
ISSN: 1537-2642
In: The futurist: a journal of forecasts, trends and ideas about the future, Band 13, Heft 1, S. 60-61
ISSN: 0016-3317
In: Risk analysis: an international journal, Band 22, Heft 5, S. 919-930
ISSN: 1539-6924
Refinements of methods for life cycle impact assessment (LCIA) are directed at removing unjustified simplifications and quantifying and reducing uncertainties in results. The amount of uncertainty reduction that is actually achieved through LCIA method refinement depends on the structure of the life cycle inventory model. We investigate the general structure of inventory models using an economic input/output (I/O) life cycle assessment model of the U.S. economy. In particular, we study the results of applying a streamlining algorithm to the I/O LCA model. The streamlining algorithm retains only those "branches" of the process tree that are jointly required to account for a specified fraction of the total impacts upstream of each point in the tree. We examine the implications of these "tree pruning" results for site‐informed LCIA. Percentiles are presented for U.S. commodities and several important pollutants, for the share of total upstream emissions contributed by the set of processes in each supply tier, that is, each set of processes that directly supply inputs to another set of processes. Capturing at least 90% of the total direct plus upstream emissions for criteria air pollutants and toxic releases for at least 75% of the commodities in the U.S. economy requires full modeling of direct emissions plus the first five supply tiers. The requirements for capturing a high percentage (e.g., > 80%) of total emissions vary widely across products or commodities. To capture more than 60% of total emissions for more than half of all commodities requires models with more than 4,000 process instances. To well characterize the total impacts of products, life cycle impact assessment methods must characterize foreground process impacts in a site‐informed way and mean impacts of far‐removed processes in an unbiased way.