|
|
|
| Registros recuperados: 27 | |
|
|
| 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 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Mishra, Ashok K.; Erickson, Kenneth W.; Harris, James Michael; Hallahan, Charles B.; Uematsu, Hiroki. |
| This study examines the determinants of income diversification of farm households in the United States. Farm households allocate their time between farm and off-farm activities to help stabilized household income (consumption). What characterizes those households who engage in off-farm activities? Is there any pattern over time? Using 1999, 2003 and 2007 farm-level data from the USDA’s Agricultural Resource Management Survey (ARMS), this study estimates intensity of off-farm income (or income diversification). The results show that older operators, full owners, and small farms have higher intensity of off-farm income in total household income. In contrast, dairy farms, vertically coordinated farms and farms located in the Southern and Pacific regions have... |
| Tipo: Journal Article |
Palavras-chave: Tobit; Income diversification; Vertical integration; Tenure; Farm households; Agricultural Finance; Consumer/Household Economics; D1; J2; Q12. |
| Ano: 2010 |
URL: http://purl.umn.edu/61632 |
| |
|
| |
|
| |
|
|
| Vollrath, Thomas L.; Hallahan, Charles B.. |
| The rapid increase in the number of bilateral and regional free-trade agreements since 1995 is a striking development. The proliferation of these agreements has raised questions among academicians and policymakers about whether they have, in fact, opened markets, created trade, promoted economic growth, and/or distorted trade. This study uses panel data from the 1975-2005 period and the gravity framework to identify the influence of bilateral/regional free-trade agreements on bilateral trade in merchandise, agriculture, and clothing sectors. A benchmark, Heckman sample-selection, and two generalized models, one of which accounts for reciprocal-free-trade-agreement phase-in effects, are used to gauge the impact on partner trade of mutual as well as... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Trade policy bilateral; Regional; Missing trade gravity models reciprocal trade agreements Agricultural and Food Policy. |
| Ano: 2009 |
URL: http://purl.umn.edu/49375 |
| |
|
| |
|
| |
|
| |
|
|
| Nehring, Richard F.; Martin, Andrew; Fernandez-Cornejo, Jorge; Hallahan, Charles B.; Vialou, Alexandre; Wechsler, Seth James; Grube, Arthur. |
| This paper presents findings on the use of HT corn and quality-adjusted herbicide use for 12 key corn producing states using a panel data set for 1986-2008. Our preliminary findings indicate an insignificant impact of HT corn on herbicide use, conditioning or accounting for HT corn with other important drivers of corn herbicide use: HT soy, corn output price, glyphoste price, nonherbicide glyponsate price, and percentage of continuous corn and low-till corn. However, we find a positive and significant impact of HT corn on herbicide use in selected states, using regional interaction terms. We use econometric techniques to avoid spurious regression results. Other preliminary runs indicated that the results hold when running the US and regional interactions... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: HT-corn; Herbicides; Weed resistance; Glyphosate; Corn; Environmental Economics and Policy; Farm Management; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/103369 |
| |
|
| |
|
|
| 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 |
| |
|
| |
|
| |
| Registros recuperados: 27 | |
|
|
|
