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| Registros recuperados: 11 | |
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| Marshall, Elizabeth P.. |
| Biofuels such as ethanol and biodiesel are increasingly promoted as green alternatives to petroleum-derived transport fuels. Scaling up feedstock production to produce enough biofuel to displace a significant portion of current petroleum demand will put pressure on land and water resources both domestically and internationally, however, and could potentially be accompanied by unacceptable changes in landscape-level land use patterns and provisioning of ecosystem services. Ensuring that feedstock production is sustainable and that biofuels provide the social and environmental benefits that are often attributed to them will require a carefully designed portfolio of agricultural, forestry, energy, and trade policies related to biofuels and feedstock... |
| Tipo: Journal Article |
Palavras-chave: Biofuels; Sustainability; Land use; Greenhouse gas accounting; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/44696 |
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| Marshall, Elizabeth P.; Homans, Frances R.. |
| In this paper, we use a simple urban economic model to study how choosing park locations within a city might contribute towards urban planning goals. For multiple possible park placements, we solve for the associated equilibrium urban structure, including the equilibrium rent gradient, city boundary, total number of park visits, the overall utility level, and total vehicle miles traveled. We then examine how these change with alternative park placement sites. We find that, as a prescription for reducing urban sprawl, park provision has mixed results. When placed close to the central business district, the park can result in an increase in inner city housing density; such placement could help ameliorate problems of commuter traffic congestion related to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Community/Rural/Urban Development; Environmental Economics and Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/19610 |
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| Marshall, Elizabeth P.; Homans, Frances R.. |
| Most land management policies, such as land retirement, have multiple objectives. This study uses a cellular automata simulation model to explore how various spatial characteristics of land parcels on a hypothetical landscape contribute to the efficacy of land retirement in the presence of multiple retirement objectives- hydrological improvement, habitat improvement, and cost. Statistical analysis of the simulation results is used to tie particular spatial characteristics back to achievement of the three distinct objectives. In order to combine the three objectives into a measure that allows decision-makers to rank the desirability of different retirement strategies, linear and nonlinear goal programming frameworks are introduced. These frameworks are... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
| Ano: 2001 |
URL: http://purl.umn.edu/20732 |
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| Marshall, Elizabeth P.; Shortle, James S.. |
| In this study we use data envelopment analysis (DEA), and an extension of DEA called value efficiency analysis (VEA), to explore the production of quality of life within counties in the mid-Atlantic region and the extent to which production frontiers and efficiency differ between rural and urban counties. These methods allow us to identify counties that are inefficient in their quality of life production, and to rank those counties according to their distance from a performance standard established by other observed counties (using DEA), or by a single unit designated as most preferred (using VEA) . |
| Tipo: Conference Paper or Presentation |
Palavras-chave: International Development. |
| Ano: 2004 |
URL: http://purl.umn.edu/20198 |
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| Ranjan, Ram; Shortle, James S.; Marshall, Elizabeth P.. |
| A number of studies in the past have come up in order to explain and verify the observation made by Grossman and Kruger that that there may exist an inverted U-shaped relationship between environmental pollution and income. While some studies have found this relationship to hold true for certain pollutants, other studies have rejected this hypothesis based upon empirical observations of certain other pollutants. Further, most of these results have been derived from cross-sectional observation of such patterns across countries and therefore have given rise to further sckepticism. Though a number of empirical estimates of this relationship exist in the literature, there have been very few attempts to explain a theoretical basis for such a pattern.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/22147 |
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| Homans, Frances R.; Marshall, Elizabeth P.. |
| In this article, we introduce a recreational amenity—a greenbelt park—into a simple urban economic model. For multiple possible park placements, we solve for the associated equilibrium urban structure, including the equilibrium rent gradient, city boundary, total number of park visits, the overall utility level, and total vehicle miles traveled. We examine how these change with alternative park placement sites. We then show how two modifications of the basic model—allowing congestion at the site to affect site quality, and introducing the possibility of a substitute site at the city’s periphery—affect our conclusions about how greenbelt location influences urban structure. |
| Tipo: Journal Article |
Palavras-chave: Urban structure; Greenbelt; Congestion; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2008 |
URL: http://purl.umn.edu/45670 |
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| Registros recuperados: 11 | |
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