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Registros recuperados: 27
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A COMPARISON OF RESAMPLING TECHNIQUES WHEN PARAMETERS ARE ON A BOUNDARY: THE BOOTSTRAP, SUBSAMPLE BOOTSTRAP, AND SUBSAMPLE JACKKNIFE AgEcon
Hilmer, Christiana E.; Holt, Matthew T..
This paper compares the finite sample performance of subsample bootstrap and subsample jackknife techniques to the traditional bootstrap method when parameters are constrained to be on some boundary. To assess how these three methods perform in an empirical application, a negative semi-definite translog cost function is estimated using U.S. manufacturing data.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000 URL: http://purl.umn.edu/21810
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A LINEAR APPROXIMATE ACREAGE ALLOCATION MODEL AgEcon
Holt, Matthew T..
It is shown that the first-order differential acreage allocation model developed by Bettendorf an Bloome and by Barten and Vanloot, and based on certainty equivalent profit maximization, may be extended to a levels version. The levels model, referred to as a linear approximate acreage allocation model, is potentially useful when panel or cross-sectional data are employed. An empirical application with U.S. state-level corn flex acreage data for the period 1991-95 indicates the feasibility of the approach. Estimated price and scale elasticities are generally larger than previous estimates, and are perhaps indicative of acreage response under the provisions of the 1996 Farm Act.
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1999 URL: http://purl.umn.edu/30792
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A SPATIAL ECONOMETRIC STAR MODEL WITH AN APPLICATION TO U.S. COUNTY ECONOMIC GROWTH, 1969–2003 AgEcon
Pede, Valerien O.; Florax, Raymond J.G.M.; Holt, Matthew T..
Spatial regression models incorporating non-stationarity in the regression coefficients are popular. We propose a spatial variant of the Smooth Transition AutoRegressive (STAR) model that is more parsimonious than commonly used approaches and endogenously determines the extent of spatial parameter variation. Uncomplicated estimation and inference procedures are demonstrated using a neoclassical convergence model for United States counties.
Tipo: Working or Discussion Paper Palavras-chave: Spatial autoregression; Smooth transition; Spatial econometrics; STAR; GWR; Community/Rural/Urban Development; Labor and Human Capital; Political Economy; Research Methods/ Statistical Methods; C21; C51; R11; R12.
Ano: 2009 URL: http://purl.umn.edu/48117
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AJAE Appendix: Nonlinear Dynamics and Structural Change in the U.S. Hog-Corn Ratio: A Time-Varying Star Approach AgEcon
Holt, Matthew T.; Craig, Lee A..
The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 1, February 2006.
Tipo: Journal Article Palavras-chave: Agribusiness.
Ano: 2006 URL: http://purl.umn.edu/7402
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ALTERNATIVE MEASURES OF RISK IN COMMODITY SUPPLY MODELS: AN ANALYSIS OF SOW FARROWING DECISIONS IN THE UNITED STATES AgEcon
Holt, Matthew T.; Moschini, GianCarlo.
The role of price risk in sow farrowings is investigated by using bivariate ARCH-M and GARCH-M models and a nonparametric kernel estimator. To account for the relevant time horizon of irreversible supply decisions, predictions for mean price and conditional price variance are iterated forward. The empirical results vary markedly in terms of their implications for risk response in hog supply decisions, with the ARCH-M and GARCH-M models suggesting a small and negative risk effect. Estimates of the marginal risk premium also indicate moderate and variable departures from marginal cost pricing in sow farrowing supply decisions.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis; Production Economics; Risk and Uncertainty.
Ano: 1992 URL: http://purl.umn.edu/30737
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BOOTSTRAPPING YOUR FISH OR FISHING FOR BOOTSTRAPS?: PRECISION OF WELFARE LOSS ESTIMATES FROM A GLOBALLY CONCAVE INVERSE DEMAND MODEL OF COMMERCIAL FISH LANDINGS IN THE U.S. GREAT LAKES AgEcon
Bishop, Richard C.; Holt, Matthew T.; Hilmer, Christiana E..
Replaced with revised version of paper 06/30/04.
Tipo: Conference Paper or Presentation Palavras-chave: Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/20272
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COMBINING TIME-VARYING AND DYNAMIC MULTI-PERIOD OPTIMAL HEDGING MODELS AgEcon
Haigh, Michael S.; Holt, Matthew T..
This paper presents an effective way of combining two popular, yet distinct approaches used in the hedging literature – dynamic programming (DP) and time-series (GARCH) econometrics. Theoretically consistent yet realistic and tractable models are developed for traders interested in hedging a portfolio. Results from a bootstrapping experiment used to construct confidence bands around the competing portfolios suggest that while DP-GARCH outperforms the GARCH approach they are statistically equivalent to the OLS approach when the markets are stable. Significant gains may be achieved by a trader, however, by adopting the DP–GARCH model over the OLS approach when markets exhibit excessive volatility.
Tipo: Working or Discussion Paper Palavras-chave: Marketing.
Ano: 2002 URL: http://purl.umn.edu/28593
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Copula-Based Nonlinear Models of Spatial Market Linkages AgEcon
Goodwin, Barry K.; Holt, Matthew T.; Onel, Gulcan; Prestemon, Jeffrey P..
Replaced with revised version of paper 06/28/11.
Tipo: Conference Paper or Presentation Palavras-chave: Spatial Market Linkages; Copula Models; State-dependence; Forest Products; Research Methods/ Statistical Methods.
Ano: 2011 URL: http://purl.umn.edu/103715
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EFFICIENCY OF FOREST COMMODITY FUTURES MARKETS AgEcon
He, Dequan; Holt, Matthew T..
Market efficiency and unbiasedness tests are performed for the first time for three forest commodity futures markets: softwood lumber, oriented strand board (OSB), and northern bleached softwood kraft pulp (NBSK). The Johansen cointegration procedure is applied to test long-term market efficiency, while the standard error correction models (ECM) and ECM with GQARCH-in-mean process are also used to examine short-term market efficiency and unbiasedness. Results show that these markets are inefficient and biased in both the long-term and short-term. Results also indicate that no short-term time-varying risk premiums are found in these commodity futures markets.
Tipo: Conference Paper or Presentation Palavras-chave: Marketing.
Ano: 2004 URL: http://purl.umn.edu/20344
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Estimating Indirect Production Functions with a More General Specification: An Application of the Lewbel Model AgEcon
Hilmer, Christiana E.; Holt, Matthew T..
Whereas consumer theory employs several different empirical specifications for estimating indirect utility functions, producer theory has relied on the Translog specification to estimate the indirect production function. In this paper, we apply Lewbel’s more general functional specification and investigate its implications for the estimation of indirect production functions in productivity analysis. An attractive feature of the Lewbel model is that it nests both the Translog and the almost ideal supply system, offering a method to assess the empirical validity of all three specifications. Aggregate U.S. production data are used to examine the performance of the three models in an empirical application.
Tipo: Journal Article Palavras-chave: Duality; Indirect production function; Nested test; C32; C52; Q12.
Ano: 2005 URL: http://purl.umn.edu/43484
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ESTIMATING POST-HARVEST BENEFITS FROM INCREASES IN COMMERCIAL FISH CATCHES WITH IMPLICATIONS FOR REMEDIATION OF IMPINGEMENT AND ENTRAINMENT LOSSES AT POWER PLANTS AgEcon
Bishop, Richard C.; Holt, Matthew T..
A variety of regulations may affect commercial fish catches. We take here as a case in point steps to reduce losses of aquatic organisms due to impingement and entrainment (I&E) at power plants. Methods to evaluate the benefits of such measures are needed for benefit-cost analysis. We use a new approach to estimating ex vessel demand by Holt and Bishop (2002) to address the portion of the benefits that occur post-harvest, that is, down the marketing chain after fishermen sell their catches. The model deals with the dockside prices and quantities for six major commercial species harvested from the U.S. Great Lakes. We use the model to explore the potential magnitude of post-harvest benefits for Great Lakes fisheries. We then turn to a possible approach...
Tipo: Working or Discussion Paper Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/12603
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GARCH TIME-SERIES MODELS: AN APPLICATION TO RETAIL LIVESTOCK PRICES AgEcon
Aradhyula, Satheesh V.; Holt, Matthew T..
This article applies recent developments in time-series modeling to analyze the retail prices of beef, pork, and chicken. Specifically, generalized autoregressive conditional heteroscedasticity (GARCH) models were fitted to these data to determine if, unlike more traditional time-series models, the conditional variances of the underlying stochastic processes are nonconstant. The estimation results indicate that the constant conditional variances assumption can be rejected. Furthermore, ex post forecast intervals generated from the GARCH processes indicate that the forecasting accuracy of the estimated models has varied widely over time with substantial volatility occurring during the 1970s and early 1980s.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis; Livestock Production/Industries; Research Methods/ Statistical Methods.
Ano: 1988 URL: http://purl.umn.edu/32111
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HEDGING FOREIGN CURRENCY, FREIGHT AND COMMODITY FUTURES PORTFOLIOS: A NOTE AgEcon
Haigh, Michael S.; Holt, Matthew T..
Foreign exchange hedging ratios are simultaneously estimated alongside freight and commodity ratios in a time-varying portfolio framework. Foreign exchange futures are found to be by far the most important derivative instrument to be employed in order to reduce uncertainty for traders. Our results lend support to the decision by LIFFE to cease trading the BIFFEX freight futures contract because of its low levels of trading activity, which likely resulted from its apparent unattractiveness as a hedging instrument.
Tipo: Working or Discussion Paper Palavras-chave: Marketing.
Ano: 2002 URL: http://purl.umn.edu/28573
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INCORPORATING QUADRATIC SCALE CURVES IN INVERSE DEMAND SYSTEMS AgEcon
Beach, Robert H.; Holt, Matthew T..
In this paper we introduce inverse demand systems that include quadratic scale terms. These systems are similar to regular quadratic demand systems introduced by Howe, Pollack, and Wales. A unique feature of these specifications is that they maintain linear scale curves as a special case. For illustrative purposes we estimate the Normalized Quadratic Inverse Demand-Quadratic Scale System using monthly South Atlantic fish landings and valuation data, 1980-1996. In estimation concavity is maintained locally, and the rank reduction procedures advocated by Diewert and Wales (1988b) are employed. The estimated model is then used to obtain welfare estimates associated with catch restrictions.
Tipo: Conference Paper or Presentation Palavras-chave: Antonelli matrix; Inverse demands; Negative semidefinite; Quadratic scale curves; Demand and Price Analysis; Research Methods/ Statistical Methods.
Ano: 1999 URL: http://purl.umn.edu/21579
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MARKET EFFICIENCY IN AGRICULTURAL FUTURES MARKETS AgEcon
McKenzie, Andrew M.; Holt, Matthew T..
This paper tests for both long run and short run market efficiency and unbiasedness in five agricultural futures markets. The possible existence of constant and time varying risk premia are taken into account using cointegration procedures and error correction models within a GARCH framework.
Tipo: Conference Paper or Presentation Palavras-chave: Marketing.
Ano: 1998 URL: http://purl.umn.edu/20933
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Modeling Non-Linear Spatial Dynamics: A Family of Spatial STAR Models and an Application to U.S. Economic Growth AgEcon
Pede, Valerien O.; Florax, Raymond J.G.M.; Holt, Matthew T..
This paper investigates non-linearity in spatial processes models and allows for a gradual regime-switching structure in the form of a smooth transition autoregressive process. Until now, applications of the smooth transition autoregressive (STAR) model have been largely confined to the time series context. The paper focuses on extending the non-linear smooth transition perspective to spatial processes models, in which spatial correlation is taken into account through the use of a so-called weights matrix identifying the topology of the spatial system. We start by deriving a non-linearity test for a simple spatial model, in which spatial correlation is only included in the transition function. Next, we propose a non-linearity test for a model that includes...
Tipo: Conference Paper or Presentation Palavras-chave: Spatial econometrics; Non-linearity; Utoregressive smooth transition; Research Methods/ Statistical Methods; C12; C21; C51; O18; R11.
Ano: 2008 URL: http://purl.umn.edu/6518
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Modeling Technical Change in Midwest Corn Yields, 1895-2005: A Time Varying-Regression Approach AgEcon
Lynch, Alee L.; Holt, Matthew T.; Gray, Allan W..
This paper explores the use of time-varying regression models to model the effects of technical change in US Midwest Corn yields. The data extends from 1895 to 2005 encompassing the implementation of hybrid technologies and improvements in farm production practices.
Tipo: Conference Paper or Presentation Palavras-chave: Time-vary regression model; Modeling technical change; Corn yield technical change; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/9896
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NONLINEAR DYNAMICS AND ECONOMIC INSTABILITY: THE OPTIMAL MANAGEMENT OF A BIOLOGICAL POPULATION AgEcon
Chavas, Jean-Paul; Holt, Matthew T..
Assuming a competitive market, conditions are determined for when a steady-state equilibrium does not exist in the optimal dynamic management of a biological population. Irregular and unpredictable behavior (called “"chaos"”) can arise from fully rational economic decision making. High interest rate, adjustment costs, and an inelastic demand can contribute to market instability.
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy.
Ano: 1995 URL: http://purl.umn.edu/30770
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Nonlinear Models of Exchange Rate Pass-Through in International Forest Product Markets AgEcon
Onel, Gulcan; Prestemon, Jeffrey P.; Holt, Matthew T.; Goodwin, Barry K..
Tipo: Conference Paper or Presentation Palavras-chave: Forest Products; International Price Linkages; Exchange Rate Pass-Through; Vector Error Correction Models (VECM); Thresholds; International Relations/Trade; Research Methods/ Statistical Methods.
Ano: 2010 URL: http://purl.umn.edu/61620
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Nonlinearities in the World Vegetable Oil Price System: El Nino Effects AgEcon
Ubilava, David; Holt, Matthew T..
In this research we estimate the effect of El Nino Southern Oscillation (ENSO) over time on market dynamics for eight major vegetable oil prices. We estimate a system for vegetable oil prices by using a smooth transition vector error correction model (STVECM) to analyze impacts of ENSO events on production, and, more interestingly, their asymmetric nature. The results of estimated Exponential STVECM and Quadratic STAR models, respectively for the system of oil price equations and the ENSO variable regressions, suggest a smooth transition between ENSO regimes, and provide a better overall fit to the data than do linear models. Effects of the ENSO shock are analyzed using generalized impulse-response functions (GIRFs). The non-linear nature of these shocks...
Tipo: Conference Paper or Presentation Palavras-chave: Smooth Transition; Vector Error Correction; El Nino Southern Oscillation; Vegetable Oil Prices; Demand and Price Analysis; Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/49360
Registros recuperados: 27
Primeira ... 12 ... Última
 

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