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| Registros recuperados: 35 | |
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| Abbott, Philip C.; Hurt, Christopher; Tyner, Wallace E.. |
| In the spring and early summer of 2008, the temperature of the rhetoric in the food-versus-fuel debate was skyrocketing right along with the prices of corn, soybeans and crude oil. Farm Foundation is not about heat or fueling fires. Our mission is to be a catalyst for sound public policy by providing objective information to foster deeper understanding of the complex issues before the food system today. We commissioned Purdue University economists Wallace Tyner, Philip Abbott and Christopher Hurt to provide a comprehensive, objective assessment of the forces driving food prices. Released in July 2008, What’s Driving Food Prices? identified three major drivers of prices—depreciation of the U.S. dollar, changes in production and consumption, and growth in... |
| Tipo: Report |
Palavras-chave: Food Consumption/Nutrition/Food Safety. |
| Ano: 2009 |
URL: http://purl.umn.edu/48495 |
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| Dale, Rhys T.; Tyner, Wallace E.. |
| Ethanol, the common name for ethyl alcohol, is fuel grade alcohol that is predominately produced through the fermentation of simple carbohydrates by yeasts. In the United States, the carbohydrate feedstock most commonly used in the commercial production of ethanol is yellow dent corn (YDC). The use of ethanol in combustion engines emits less greenhouse gasses than its petroleum equivalent, and it is widely hoped that the increased substitution of petroleum by ethanol will reduce US dependence on imported oil and decrease greenhouse gas emissions. Production of ethanol within the United States is expected to double, from 3.4 billion gallons in 2004, to about seven billion gallons in the next five years. Two processes currently being utilized to... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/28674 |
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| Taheripour, Farzad; Tyner, Wallace E.. |
| Much research has provided estimates of induced land use change and emissions for first generation biofuels. Relatively little has estimated land use change for the second generation cellulosic biofuels. In this paper we estimate induced land use change and emissions for these biofuels. Estimated emissions due to land use changes induced by biofuels production are uncertain not only because their associated land use changes are uncertain, but also because of uncertainty in the land use emissions factors (EFs). This paper also examines uncertainties related to these EFs and their assumptions. Three emissions factors including EFs obtained based on Woods Hole (WH) data, EFs developed by California Air Resources Board (CARB), and EFs obtained from the... |
| Tipo: Presentation |
Palavras-chave: Cellulosic biofuels; Land use change emissions; Resource /Energy Economics and Policy. |
| Ano: 2012 |
URL: http://purl.umn.edu/124407 |
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| He, Lixia; Tyner, Wallace E.; Siam, Gamal. |
| This study provides an empirical perspective on alternative irrigation policies for allocating limited water to agricultural production in Egypt. Positive mathematical programming is used for model calibration. Three policy options for Egypt are tested: water pricing, water complementary input factor taxes, and output taxes. The results of the research show that: 1) water pricing needs to be much higher than the recovery cost in order to be effective in limiting irrigation water use; 2) at a higher tax rate, fertilizer and energy taxes are effective in reducing the irrigation water demand while maintaining adequate welfare levels; 3) a pesticide tax is less effective than fertilizer or energy taxes; and 4) an output tax on sugar cane and rice would... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/20034 |
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| Schroeter, Christiane; Lusk, Jayson L.; Tyner, Wallace E.. |
| Despite the significant rise in obesity in the U.S., economic research on obesity is still in its infancy. This paper employs a microeconomic approach to investigate the effects of price and income changes on weight in an effort to determine how a high-calorie food tax, a low-calorie food subsidy, and/or an income changes affect body weight. Although raising the price of high-calorie food typically will likely lead to decreased demand for such goods; it is not clear that such an outcome will actually reduce weight. The model developed in this paper identifies conditions under which price and income changes are mostly likely to actually result in a weight loss. The model is easily implemented using data on own-and cross-price elasticities that are often... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Health Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19234 |
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| Taheripour, Farzad; Tyner, Wallace E.. |
| The economic and land use consequences of US biofuel programs and their contributions to GHG emissions have been the focal point of many debates and research studies in recent years. However, most of these studies focused on the land use emissions due to the first generation of biofuels such as corn ethanol, sugarcane ethanol, and biodiesel (e.g. [1, 2] [3, 4]). A quick literature review indicates that only a few attempts have been made to estimate these emissions for the second generation of biofuels which convert cellulosic materials into liquid fuels. Gurgel et al. [5] have used a highly aggregated computational model (CGE) to evaluate land use consequences of producing biofuels from biomass feedstock. This model does not distinguish between the first... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Biofuels; Cellullosic feedstocks; Land use change; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/103559 |
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| Dale, Rhys T.; Tyner, Wallace E.. |
| Using the DM model is not complex: the user changes input values of interest (plant size,conversion rates, etc.) and examines the effect of these changes on output values (annual profits,feed stock requirements, etc.). There are nine worksheets in four modules in the excel workbook: assumptions, process, economics, and technology assessment. All user inputs are entered in the assumptions module of the model, which consists of three worksheets denoted with bright yellow tabs: process assumptions, economic assumptions and physical assumptions.The values that are entered on this page are then used in each of the subsequent modules to calculate hourly flow rates,equipment size and cost, total costs, loan terms, and annual profits. At the top of each page is a... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/28658 |
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| Ehmke, Mariah D.; Lusk, Jayson L.; Tyner, Wallace E.. |
| Previous work in experimental economics reveals specific differences in economic behavior, especially reciprocity and free-riding behavior, across cultures. We expand the possible pallet of cross-cultural behavioral differences that may exist. We hypothesize that different kinds of strategic interaction and individual decision-making behaviors differ across locations. The variety of experiments we use allow us to report multidimensional rather than just single dimensional differences in behavior across locations. In order to build a broad Homo Economicus we conducted economic experiments in four dissimilar locations: Hangzhou, China; Niamey, Niger; Grenoble, France; Manhattan, Kansas; and West Lafayette, Indiana. Each subject completed an ultimatum... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Time preference; Risk preference; Voluntary contribution mechanism; Ultimatum bargaining game; Cultural; China; France; Niger; Kansas; Indiana; US; Institutional and Behavioral Economics. |
| Ano: 2005 |
URL: http://purl.umn.edu/19225 |
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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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| Registros recuperados: 35 | |
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