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Rethinking the causes of deforestation: Lessons from economic models. The World Bank Research Observer

by Arild Angelsen, David Kaimowitz , 1999
"... This article, which synthesizes the results of more than 140 economic models analyzing the causes of tropical deforestation, raises significant doubts about many conventional hypotheses in the debate about deforestation. More roads, higher agricultural prices, lower wages, and a shortage of off-farm ..."
Abstract - Cited by 159 (8 self) - Add to MetaCart
, and foreign debt is also ambiguous. This review, however, finds that policy reforms included in current economic liberalization and adjustment efforts may increase the pressure on forests. Although the boom in deforestation modeling has yielded new insights, weak methodology and poor-quality data make

Natural Science Steps to the clinic with ELF EMF

by Ash Madkan , Martin Blank , Edward Elson , Kuo-Chen Chou , Matthew S Geddis , Reba Goodman , 2009
"... ABSTRACT There have been many models to identify and analyze low-frequency motions in protein and DNA molecules. It has been successfully used to simulate various low-frequency collective motions in protein and DNA molecules. Lowfrequency motions in biomacromolecules originate from two common and i ..."
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ABSTRACT There have been many models to identify and analyze low-frequency motions in protein and DNA molecules. It has been successfully used to simulate various low-frequency collective motions in protein and DNA molecules. Lowfrequency motions in biomacromolecules originate from two common

EMF Model Comparison on Border Carbon Adjustment (Special Issue)

by unknown authors , 2012
"... We carry out a detailed sensitivity analysis of border carbon adjustment (rates) by applying a global Computable General Equilibrium (CGE) GTAP7-based model. We find different incentives for the regions in the climate coalition to raise carbon-based border tax rates (BTAX) above the standard rate th ..."
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We carry out a detailed sensitivity analysis of border carbon adjustment (rates) by applying a global Computable General Equilibrium (CGE) GTAP7-based model. We find different incentives for the regions in the climate coalition to raise carbon-based border tax rates (BTAX) above the standard rate

AN EVOLUTIONARY MODEL FOR SIMPLE ECOSYSTEMS

by Franco Bagnoli, Michele Bezzi - ANNUAL REVIEWS OF COMPUTATIONAL PHYSICS VII (PP. 1–45) EDITED BY DIETRICH STAUFFER , 1999
"... In this review some simple models of asexual populations evolving on smooth landscapes are studied. The basic model is based on a cellular automaton, which is analyzed here in the spatial mean-field limit. Firstly, the evolution on a fixed fitness landscape is considered. The correspondence between ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
the time evolution of the population and equilibrium properties of a statistical mechanics system is investigated, finding the limits for which this mapping holds. The mutational meltdown, Eigen’s error threshold and Muller’s ratchet phenomena are studied in the framework of a simplified model. Finally

Embracing complexity: the challenge of the ecosystem approach

by James Kay, Eric Schneider - Alternatives , 1994
"... As environmental degradation and change continues, decision makers and managers feel significant pressure to rectify the situation. Scientists, in turn, find themselves under pressure to set out simple and clear rules for proper ecosystem management. The response has been one of frustration. Michael ..."
Abstract - Cited by 37 (1 self) - Add to MetaCart
As environmental degradation and change continues, decision makers and managers feel significant pressure to rectify the situation. Scientists, in turn, find themselves under pressure to set out simple and clear rules for proper ecosystem management. The response has been one of frustration

The Role of Border Carbon Adjustment in Unilateral Climate Policy Insights From An EMF Model Comparison DRAFT 9/23/12

by Christoph Böhringera, Thomas F. Rutherfordb, Edward J. Balistreric
"... Issues of emission leakage and competitiveness are at the fore of the climate policy debate in all the major economies implementing or proposing to implement significant emissions cap-and-trade programs. Unilateral climate policy cannot directly impose emissions prices on foreign sources, but it can ..."
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, but it can complement domestic emissions pricing with border carbon adjustment to reduce leakage and increase global cost-effectiveness. While border carbon adjustment has a theoretical efficiency rationale, its practical implementation is subject to serious caveats. This model comparison study assesses

A mathematical Model for Plants as Ecosystem Engineers

by E Gilad , J Von Hardenberg , A Provenzale , M Shachak , E Meron - J. Theor. Biol
"... Abstract Understanding the structure and dynamics of plant communities in water-limited systems often calls for the identification of ecosystem engineers-key species that modify the landscape, redistribute resources and facilitate the growth of other species. Shrubs are excellent examples; they sel ..."
Abstract - Cited by 19 (3 self) - Add to MetaCart
; they self-organize to form patterns of mesic patches which provide habitats for herbaceous species. In this paper we present a mathematical model for studying ecosystem engineering by woody plant species in drylands. The model captures various feedbacks between biomass and water including water uptake

An Ecosystems Model for Integrating Planning and Scheduling

by unknown authors
"... So far a general method has been developed for finding near optimal process plans for medium complexity prismatic parts to be manufactured in a job-shop type facility. However, being able to find individually near optimal process plans may be of very little value if there is no communication between ..."
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So far a general method has been developed for finding near optimal process plans for medium complexity prismatic parts to be manufactured in a job-shop type facility. However, being able to find individually near optimal process plans may be of very little value if there is no communication

Ecosystem Simulation Model Fit Optimization

by Justin C. W. Debuse, Shah J. Miah, V. Debuse, S. Lawson
"... This study examines the application of digital ecosystems concepts to a biological ecosystem simulation problem. The problem involves the use of a digital ecosystem agent to optimize the accuracy of a second digital ecosystem agent, the biological ecosystem simulation. The study also incorporates so ..."
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social ecosystems, with a technological solution design subsystem communicating with a science subsystem and simulation software developer subsystem to determine key characteristics of the biological ecosystem simulation. The findings show similarities between the issues involved in digital ecosystem

Nitrogen saturation of terrestrial ecosystems: Some recent findings and their implications for our conceptual framework. Water Air and Soil Pollution Focus

by Bridget A. Emmett , 2007
"... Abstract The consequences of nitrogen (N) enrich-ment for terrestrial and freshwater ecosystems are of increasing concern in many areas due to conti-nued or increasing high emission rates of reactive N. Within terrestrial ecosystems various conceptual frameworks and modelling approaches have been de ..."
Abstract - Cited by 15 (0 self) - Add to MetaCart
Abstract The consequences of nitrogen (N) enrich-ment for terrestrial and freshwater ecosystems are of increasing concern in many areas due to conti-nued or increasing high emission rates of reactive N. Within terrestrial ecosystems various conceptual frameworks and modelling approaches have been
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