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| Registros recuperados: 79 | |
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| Liu, Jing; Arndt, Channing; Hertel, Thomas W.. |
| Computable General Equilibrium (CGE) models have been widely used for quantitative analysis of global economic issues. However, CGE models are frequently criticized for resting on weak empirical foundations. This paper builds on recent work in macro-econometric estimation, developing an approach to parameter estimation for a widely employed global CGE model, the Global Trade Analysis Project (GTAP) model. An approximate likelihood function is developed and the set of optimum elasticity values is obtained by maximizing this approximate likelihood function in the context of a back casting exercise. In addition, two statistical tests are performed. The first of these tests compares the standard GTAP elasticity vector with the estimated trade elasticity... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade; Research Methods/ Statistical Methods. |
| Ano: 2003 |
URL: http://purl.umn.edu/28687 |
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| Golub, Alla A.; Hertel, Thomas W.; Rose, Steven K.; Sohngen, Brent. |
| There is significant policy interest in liquid biofuels with appealing prospects for energy security, farm security, poverty alleviation, and climate change. Large-scale commercial biofuel production could have far reaching implications for regional and global markets – particularly those related to energy and land use. As such, large-scale biofuels growth is likely to have significant impacts on global greenhouse gas (GHG) emissions. This paper utilizes a CGE model with explicit biofuel, land, and energy markets. The model is able to estimate the effects on the broad range of input and output markets potentially affected globally by biofuels policies. One of the most controversial issues within the biofuels debate is potential indirect changes in land use... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land use change; Biofuels; CGE model; Forest carbon stocks; GHG emissions; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/47450 |
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| Ludena, Carlos E.; Hertel, Thomas W.; Preckel, Paul V.; Foster, Kenneth A.; Nin Pratt, Alejandro. |
| There is considerable interest in projections of future productivity growth in agriculture. Whether one is interested in the outlook for global commodity markets, future patterns of international trade, or the interactions between land use, deforestation and ecological diversity, the rate of productivity growth in agriculture is an essential input. Yet solid projections for this variable have proven elusive particularly on a global basis. This is due, in no small part, to the difficulty in measuring historical productivity growth. The purpose of this paper is to report the latest time series evidence on total factor productivity growth for crops, ruminants and non-ruminant livestock, on a global basis. We then follow with tests for convergence amongst... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Malmquist index; Productivity; Convergence; Projections; Crops; Livestock; Productivity Analysis; D24; O13; O47; Q10. |
| Ano: 2006 |
URL: http://purl.umn.edu/25392 |
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| Golub, Alla A.; Henderson, Benjamin B.; Hertel, Thomas W.. |
| Recent research on livestock’s role in climate change has raised awareness about contribution that livestock climate policies can make to global mitigation efforts, and has increased the likelihood that mitigation policies will eventually be imposed on the sector. This study investigates effects of GHG mitigation policies on livestock sectors emissions and production by regional sector under a range of global mitigation polices that are broadly aligned with the different responsibilities of developed and developing countries under the UNFCCC. The study also examines emission leakage effects, impacts on food security in developing countries, and the implications of large informal livestock sectors in regions such as Sub Saharan Africa. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; Food Security and Poverty; C68; Q15; Q54. |
| Ano: 2011 |
URL: http://purl.umn.edu/103425 |
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| Itakura, Ken; Hertel, Thomas W.; Reimer, Jeffrey J.. |
| Applied general equilibrium (AGE) analysis is often found to under-predict the increases in trade and economic growth that result from trade liberalization. One potential reason is that conventional AGE models ignore the strong correlations that exist between firm productivity, on the one hand, and exporting, importing, and investment, on the other. To examine this possibility, this study incorporates econometric evidence of these linkages into the dynamic Global Trade Analysis Project AGE model, and then uses this model to analyze a recently proposed East Asian free trade agreement. While conventional AGE modeling effects are found to predominate and be reinforced by the productivity effects, in some cases the latter actually reverse the changes predicted... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade; Productivity Analysis. |
| Ano: 2003 |
URL: http://purl.umn.edu/28693 |
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| Hertel, Thomas W.; Tyner, Wallace E.; Birur, Dileep K.. |
| The recent rise in world oil prices, coupled with heightened interest in the abatement of greenhouse gas emissions, has led to a sharp increase in domestic biofuels production around the world. Previous authors have devoted considerable attention to the impacts of these policies on a country-by-country basis. However, there are also strong interactions among these programs, as they compete in world markets for feedstocks and ultimately for a limited supply of global land. In this paper, we evaluate the interplay between two of the largest biofuels programs, namely the renewable fuel mandates in the US and the EU. We examine how the presence of each of these programs influences the other, and also how their combined impact influences global markets and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/6526 |
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| Hertel, Thomas W.; McKinzie, Lance. |
| This paper argues that the use of "laboratory" data sets can add substantially to the teaching of production economics at the graduate level. Optimal experimental designs for generating pseudo data from a process model are discussed. These are shown to depend of the functional form to be estimated. We choose the translog form for our multiproduct profit function and compare alternative approaches to estimation, using pseudo data from a farm-level linear programming model. Particular restrictions on this profit function are also considered. Finally, aggregation of output prices is shown to alter substantially input price elasticities of demand. |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 1986 |
URL: http://purl.umn.edu/32546 |
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| Hertel, Thomas W.; Huff, Karen. |
| This paper develops a complete decomposition of the change in global welfare in the GTAP model. In particular, this money metric change is broken down into component parts, each of which relates to a quantity change interacting with a distortion in the model. This enables the user to assess, for example, how much of the gains from trade reform are attributable to a given commodity and/or a given region. The commodity and region specific changes in allocative efficiency can be further decomposed by transaction/tax instrument. We find that this greatly facilitates the presentation and analysis of results from GTAP. We motivate the derivation of this decomposition with the case of a one region, three commodity, analogue to the GTAP model. This permits us to... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade. |
| Ano: 2001 |
URL: http://purl.umn.edu/28708 |
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| Birur, Dileep K.; Beach, Robert H.; Hertel, Thomas W.; McCarl, Bruce A.. |
| With the increasing research interests in biofuels, global implications of biofuels production have been generally examined either in a partial equilibrium (PE) or general equilibrium (GE) frameworks. Though both of these approaches have unique strengths, they also suffer from many limitations due to complexity of addressing all the relevant aspects of biofuels. In this paper we have exploited the strengths of both PE and GE approaches for analyzing the economic and environmental implications of the U.S. policies on corn-ethanol and biodiesel production. In this study, we utilize the Forest and Agricultural Sector Optimization Model (FASOMGHG: Adams et al. 1996, 2005; Beach et al. 2009), a non-linear programming, PE model for the United States. We also use... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Biofuels; Indirect land use change; Land use emissions; Partial Equilibrium; Computable General Equilibrium; Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2010 |
URL: http://purl.umn.edu/61812 |
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| Keeney, Roman; Hertel, Thomas W.. |
| We examine the determinants of own-price output supply response in policy models, focusing primarily on the OECD-PEM equilibrium displacement model. Reviewing expert assessments and econometric literature estimates we find that there is evidence to both support and challenge the relatively high supply response of a model like the OECD-PEM. We also consider possible avenues of reconciliation between evidence that supports and challenges the assumed supply response in the OECD-PEM model. Our analysis of supply response in the OECD-PEM case and from reviewing literature leads us to recommend that future econometric investigation be focused on the role of farm household owned resource mobility as it contributes to agricultural supply response. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Supply response; Yield elasticity; Policy models; Agricultural and Food Policy; Production Economics; Q11; Q12; Q18. |
| Ano: 2008 |
URL: http://purl.umn.edu/45969 |
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| Registros recuperados: 79 | |
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