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Registros recuperados: 19
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A DECOMPOSED REGRESSION MODEL FOR MEASURING STRUCTURAL CHANGES IN THE FLOUR MILLING INDUSTRY AgEcon
Kim, C.S.; Hallahan, Charles B.; Schaible, Glenn D.; Leath, Mack N..
This paper presents a decomposed Poisson regression model based on count data that evaluates the size distribution, the changing number of flour mills for each size class, and the concentration of market power, simultaneously. This model also allows us to test dominant price leadership model.
Tipo: Conference Paper or Presentation Palavras-chave: Agribusiness; Industrial Organization.
Ano: 2000 URL: http://purl.umn.edu/21834
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A Note on the Reliability Tests of Estimates from ARMS Data AgEcon
Kim, C.S.; Hallahan, Charles B.; Lindamood, W.A.; Schaible, Glenn D.; Payne, James.
USDA uses the concept of "publish-ability" rather than statistical reliability of an estimate for quality validation of USDA estimates, which is solely based on the sample size and the coefficient of variation (CV). We demonstrate conceptually how the reliability of the sample mean can be tested by estimating the upper and lower bounds of the confidence interval for an unknown population mean using the CV. However, the reliability test for the sample mean can be made only under the normality assumption. USDA multiple-way Agricultural Resource Management Survey (ARMS) estimates are used to illustrate the relative measure of precision for sample-based estimators.
Tipo: Journal Article Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/31267
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BIASED BIASED TECHNOLOGICAL PROGRESS IN THE U.S. FARM SECTOR: A STRUCTURAL PERSPECTIVE AgEcon
Kim, C.S.; McElroy, Robert G.; Mishra, Ashok K.; Hallahan, Charles B..
Tipo: Conference Paper or Presentation Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2002 URL: http://purl.umn.edu/36526
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Biological Invasions: The Case of Soybean Aphid Infestation AgEcon
Kim, C.S.; Schaible, Glenn D.; Garrett, Lynn; Lubowski, Ruben N.; Lee, Donna J..
Soybeans, the second highest cash crop following corn in the U.S., have come under attack by invasive species, the soybean aphid from the North and soybean rust from the South. We estimated the economic losses resulting from soybean aphid infestation by using a dynamic equilibrium model. Results indicate that, first, the reduction of soybean production resulting from soybean aphid infestation is largely absorbed by reducing soybean exports, due to the higher price elasticity of export demand compared to the domestic demand. Second, the economic losses to U.S. soybean producers would grow on average annually between $12.8 million and $23.4 million during the first five years of infestation. In the longer-run, soybean producers would suffer greater...
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/21163
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ECONOMIC ANALYSIS OF THE CHANGING STRUCTURE OF THE U.S. FERTILIZER INDUSTRY AgEcon
Kim, C.S.; Taylor, Harold; Hallahan, Charles B.; Schaible, Glenn D..
This article evaluates structural changes in the U.S. nitrogen fertilizer industry by using a decomposed Negative Binomial Regression model. Results indicate that the U.S. nitrogen fertilizer industry can be characterized as an industry involving price leadership in oligopoly. Declining profit-margins might have forced fertilizer producers to consolidate and eliminate duplicate operations. The market concentration level is expected to intensify as the natural gas price rises.
Tipo: Conference Paper or Presentation Palavras-chave: Agribusiness.
Ano: 2001 URL: http://purl.umn.edu/20513
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ECONOMIC AND ENVIRONMENTAL BENEFITS OF SOIL/WATER NITROGEN TESTING: THE CASE OF CENTRAL NEBRASKA AgEcon
Kim, C.S.; Taylor, Harold; Sandretto, Carmen L..
This research presents a competitive dynamic model to evaluate the economic and groundwater quality benefits resulting from the adoption of soil/water nitrogen testing. The model is applied to an irrigated corn production county in the Nebraska Mid-State area where the groundwater contamination level from nitrates is reported to be, on average, 18.7 parts per million (ppm). Adoption of nutrient management practices would result in increased economic benefits to farmers and reduced nitrate stocks in groundwater.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 1999 URL: http://purl.umn.edu/35719
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Economic Impacts of the U.S. Soybean Aphid Infestation: A Multi-Regional Competitive Dynamic Analysis AgEcon
Kim, C.S.; Schaible, Glenn D.; Garrett, Lynn; Lubowski, Ruben N.; Lee, Donna J..
We estimated the economic benefits resulting from controlling soybean aphid infestation by using a multi-regional competitive dynamic equilibrium model. Results indicate that the reduction of soybean production resulting from a soybean aphid infestation is largely absorbed by reducing soybean exports, due to the higher price elasticity of export demand compared to domestic demand. Producer benefits resulting from controlling soybean aphids would increase by between $949 million and $1.623 billion in ten years under various scenarios. Results also suggest that it is economically more efficient to control soybean aphids when the rate of intrinsic growth is relatively lower, the supply price elasticity of soybean acreage is relatively more elastic, and...
Tipo: Journal Article Palavras-chave: Soybean aphid; Invasive species; Producer surplus; Consumer surplus; Rag-1; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/45660
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ECONOMICS OF MANAGING INVASIVE PEST SPECIES: EXCLUSION AND CONTROL AgEcon
Lewandrowski, Jan; Kim, C.S..
An important policy decision in managing invasive species is how to allocate resources between activities aimed at preventing the arrival of new pests - including additional arrivals of existing pests - and activities aimed at reducing the damages done by species that are already here. We develop a dynamic model for managing a generic invasive pest with an uncertain arrival date. The optimal conditions reveal that it is generally more efficient to spend a larger share of outlays for exclusion activities before a species arrives than after it is known to be here. They also show that outlays should be allocated such that the marginal costs of control measures equal the benefits from the marginal reduction of the species' population growth rate, and the...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/21948
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Estimating the Cost of Invasive Species on U.S. Agriculture: The U.S. Soybean Market AgEcon
Lee, Donna J.; Kim, C.S.; Schaible, Glenn D..
Soybean production ranks among the largest agricultural cash crops in the U.S., second only to corn. U.S. soybean production topped 3 billion bushels in 2005 with sales of $17 billion. Approximately 58% of U.S. soybeans are grown in Iowa, Illinois, Minnesota, Indiana, and Nebraska. A small percentage of the U.S. soybean crop, 2%, goes to human consumption in the form of whole beans, soybean oil, and soybean meal products. A third of the crop, 1 billion bushels per year is exported annually to China, EU, Mexico, Japan, and Taiwan, and other countries. Most of the crop, 2 billion bushels, goes to the U.S. livestock industry to feed poultry, hogs, and cattle. Variations in the supply of soybeans thus directly impact livestock production. In recent years,...
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/21113
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Induced-Innovation and Invasive Species Management AgEcon
Kim, C.S.; Schaible, Glenn D.; Lewandrowski, Jan.
Public policy for managing invasive species has largely focused on preventive measures prior to detection (stage 1) and on the use of chemical/mechanical or biological control measures after the establishment and dispersion of the invasive species (stage 2). Optimal management policy depends both on the initial stock of the invasive species and on the costs associated with conventional control measures. However, little attention has focused on how an induced technology such as Bt corn and Bt cotton is developed and adopted by farmers (stage 3), or how it affects the manageability of economic and ecological damages from an invasive species. This analysis evaluates the optimal allocation of management resources between preventive and control measures for...
Tipo: Conference Paper or Presentation Palavras-chave: Invasive species; Preventive measures; Control measures; Induced technology; Hazard function; Optimal control; Comparative dynamic analysis; Environmental Economics and Policy; Production Economics.
Ano: 2010 URL: http://purl.umn.edu/60985
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MARKET POWER AND COST-EFFICIENCY EFFECTS OF THE MARKET CONCENTRATION IN THE U.S. NITROGEN FERTILIZER INDUSTRY AgEcon
Kim, C.S.; Hallahan, Charles B.; Taylor, Harold; Schluter, Gerald E..
This article examines the effects of increasing market concentration level in the U.S. nitrogen fertilizer industry. Results indicate that the costs of market power are greater than the benefits of market concentration, in terms of manufacturing cost efficiency. To provide a stable nitrogen fertilizer supply at a relatively low price, it may be necessary to control natural gas price and/or reduce new import barriers from Middle East and former member states of the Soviet Union, where low cost gas is produced as a byproduct. Keywords: Nitrogen fertilizer, oligopoly, economies of size, market power, cost-efficiency.
Tipo: Conference Paper or Presentation Palavras-chave: Nitrogen fertilizer; Oligopoly; Economies of size; Market power; Cost-efficiency.; Marketing.
Ano: 2002 URL: http://purl.umn.edu/19674
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MONOPSONISTIC FOOD PROCESSING AND FARM PRICES: COMMENT AgEcon
Kim, C.S.; Schaible, Glenn D..
Tipo: Journal Article Palavras-chave: Agribusiness.
Ano: 1987 URL: http://purl.umn.edu/30197
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Multiregional Invasive Species Management: Theory and an Application to Florida's Exotic Plants AgEcon
Kim, C.S.; Lee, Donna J.; Schaible, Glenn D.; Vasavada, Utpal.
This research develops a multiregional optimal control model that incorporates regional allocation of a public budget for controlling invasive plants when regionally differential recreation demand functions and species control costs are present. Our equimarginal condition for optimal budget allocation equates the relative marginal economic benefits per dollar spent across regions. The model was applied to Florida Public Conservation Land regions, and results indicate that the magnitude of an annual management budget affects its distribution among species management regions, but the size of the intrinsic growth rate does not affect the pattern of budget allocation among regions.
Tipo: Journal Article Palavras-chave: Budget allocation; Equimarginal condition; Florida invasive species; Invasive plants; Optimal control; B41; C02; Q51; Q57.
Ano: 2007 URL: http://purl.umn.edu/37141
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Permanence of Carbon Sequestered in Forests under Uncertainty AgEcon
Kim, C.S.; Lewandrowski, Jan; Sands, Ronald D.; Johansson, Robert C..
In this paper we examine the issue of permanence in the context of sequestering carbon through afforestation. We develop a dynamic nested optimal control model of carbon sequestration associated with the decision to afforest a tract of land given there are uncertainties associated with fire and insect/disease hazards. Conceptually, these potential hazards are similar in that their occurrence at any time t is uncertain and landowners can take specific actions – although generally different actions - in any time period t to reduce the probability of sustaining losses related to them. The hazards differ, however, in that fire represents a large loss in carbon at a moment in time, while insect/disease infestations are more likely to be reflected in a period...
Tipo: Conference Paper or Presentation Palavras-chave: Carbon sequestration; Uncertainty; Optimal control; Hazard function; Forestry; Permanence; Environmental Economics and Policy; Land Economics/Use.
Ano: 2011 URL: http://purl.umn.edu/103565
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Prevention or Control: Optimal Government Policies for Invasive Species Management AgEcon
Kim, C.S.; Lubowski, Ruben N.; Lewandrowski, Jan; Eiswerth, Mark E..
We present a conceptual, but empirically applicable, model for determining the optimal allocation of resources between exclusion and control activities for managing an invasive species with an uncertain discovery time. This model is used to investigate how to allocate limited resources between activities before and after the first discovery of an invasive species and the effects of the characteristics of an invasive species on limited resource allocation. The optimality conditions show that it is economically efficient to spend a larger share of outlays for exclusion activities before, rather than after, a species is first discovered, up to a threshold point. We also find that, after discovery, more exclusionary measures and fewer control measures are...
Tipo: Journal Article Palavras-chave: Invasive species; Exclusion; Control; Eradication; Public expenditures; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/10176
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Structural Conservation Practices in U.S. Corn Production: Evidence on Environmental Stewardship by Program Participants and Non-Participants AgEcon
Schaible, Glenn D.; Kim, C.S.; Lambert, Dayton M..
This study used the 2005 ERS CEAP-ARMS data for corn production to first compare key operator, field, farm, economic, and environmental characteristics of conservation program participants with non-participants, by farm-size class. We then estimate a cost-function based technology adoption model of producer decisions regarding the allocation of field-level acres between corn production and infield and perimeter-field conservation structures to examine how these conservation choices differ between program participants and non-participants, while accounting for differences in other field, farm, and environmental factors. Our null hypothesis is that the average conservation structural practice acres across U.S. corn acres supplied by growers participating...
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Environmental Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/9812
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The Relative Impacts of U.S. Bio-Fuel Policies on Fuel-Energy Markets: A Comparative Static Analysis AgEcon
Kim, C.S.; Schaible, Glenn D.; Daberkow, Stan G..
Rapidly declining gasoline prices from their record high during the summer of 2008, while ethanol prices remained relatively high, made it difficult for many bio-fuel policy modelers to fully explain the impacts of U.S. bio-fuel policies on fuel prices. Using profit-maximization models for blenders, refiners, and distillers, we conduct a comparative static analysis to measure the relative magnitudes of the impacts of tax credits and blending mandates on fuel-energy market equilibrium prices. Our results indicate that first, the prices of all fuels including conventional gasoline, ethanol, and blended gasoline decline as the biofuel tax credit increases, but they increase as the rate of the blending mandate increases. Second, the shadow value of a blending...
Tipo: Journal Article Palavras-chave: Bio-fuel tax credits; Blended gasoline; Blender’s market power; Mandated blending; Tariff; Agribusiness; Marketing; Political Economy; Resource /Energy Economics and Policy; Q11; Q21; Q42; Q48.
Ano: 2010 URL: http://purl.umn.edu/57157
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Towards a Sustainable Future: The Dynamic Adjustment Path of Irrigation Technology and Water Management in Western U.S. Agriculture AgEcon
Schaible, Glenn D.; Kim, C.S.; Aillery, Marcel P..
Tipo: Conference Paper or Presentation Palavras-chave: Technology adoption; Water conservation; Irrigation; Dynamic groundwater models; Sustainable agriculture; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/49244
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WATER CONSERVATION POTENTIAL FROM IRRIGATION TECHNOLOGY TRANSITIONS IN THE PACIFIC NORTHWEST AgEcon
Schaible, Glenn D.; Kim, C.S.; Whittlesey, Norman K..
The effects of price changes on irrigation technology transitions and potential agricultural water conservation in the Pacific Northwest are analyzed using Parks' (1980) modified multinomial logit model. Results indicate that commodity price effects are statistically significant, but they are relatively small with nonprogram crop price effects greater than program crop price effects. Locational factors are also found to affect technology transitions. In the absence of water policy changes, continued irrigation technology adoption by year 2005 will result in average annual water savings of approximately 404,000 acre-feet in the Pacific Northwest.
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 1991 URL: http://purl.umn.edu/32613
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