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Registros recuperados: 22
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A COMMENT ON KLIEVE-MACAULAY'S SOUTHERN BLUEFIN TUNA GAME AgEcon
Simmons, Phil; Wallace, Lee.
Klieve and MacAulay (1993) (KM) analyse bargaining between the Australian and Japanese Southern Bluefin Tuna (SBT) industries using game theory. The KM model is a Nash equilibrium with symmetrical information, threat functions and a set of biological constraints. When we attempted to include the New Zealand SBT industry as a player in the KM model, we discovered important shortcomings in it. In this comment, we outline three major shortcomings in the KM model and propose an alternative model of a Nash equilibrium for the SBT industry.
Tipo: Journal Article Palavras-chave: Research Methods/ Statistical Methods.
Ano: 1995 URL: http://purl.umn.edu/22675
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A genetic algorithm approach to farm investment AgEcon
Cacho, Oscar J.; Simmons, Phil.
Tipo: Journal Article Palavras-chave: Agricultural Finance; Farm Management.
Ano: 1999 URL: http://purl.umn.edu/117154
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A Positivist Approach to Pigouvian Taxes based on an Evolutionary Algorithm AgEcon
Simmons, Phil; Cacho, Oscar J..
Tipo: Working or Discussion Paper Palavras-chave: Pigouvian tax; Pollution tax; Genetic algorithm; Political preferences; Environmental Economics and Policy; Political Economy.
Ano: 2000 URL: http://purl.umn.edu/12941
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A THEORETICAL DISCUSSION OF THE ECONOMIC EFFECTS OF BUFFER STOCKS AND BUFFER FUNDS AgEcon
Simmons, Phil.
It has been established that the absence of risk markets justifies market intervention in principle. The form of intervention that has been discussed most widely in the literature is the buffer stock. This paper points out that other forms of intervention, specifically buffer funds, are likely to perform better. The analysis shows that buffer funds are likely to outperform buffer stocks because they address market failure more directly. A sub-theme developed in this paper is that since buffer funds are enforced saving, it follows that policies that address capital market failure are likely to dominate buffer funds and buffer stocks in welfare terms.
Tipo: Journal Article Palavras-chave: Marketing.
Ano: 1988 URL: http://purl.umn.edu/22963
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An Analysis of the Technical Efficiency of Cotton Farmers in the Punjab province in Pakistan AgEcon
Hussain, Muhammad Sajid; Coelli, Tim J.; Simmons, Phil.
In this paper we analyse the technical efficiency of cotton farmers in the Punjab Province in Pakistan. Technical efficiency is measured relative to a stochastic frontier production function (SFPF). The estimated model includes a function in which technical efficiency is made an explicit function of firm specific factors (involving the levels of education and experience of farmers and other factors). For the purpose of analysis, survey data was collected for the 1996-97 season. Analysis is done on a district basis and the mean technical efficiencies obtained are 76, 78, 77 and 83 per cent for the districts of Arifwala, Bahawalpur, Multan and Rahim Yar Khan respectively. This study suggests that there is considerable room for productivity gains for the...
Tipo: Presentation Palavras-chave: Technical efficiency; Stochastic production frontier; And cotton farms.; Crop Production/Industries; Productivity Analysis.
Ano: 1999 URL: http://purl.umn.edu/123815
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AN OPTIMAL-CONTROL APPROACH TO STABILISING AUSTRALIAN WOOL PRICES AgEcon
Hinchy, Mike; Simmons, Phil.
In this paper, some aspects of the application of optimal-control techniques to wool industry price stabilisation are considered. It is not intended to provide a blueprint for the immediate adoption of optimal-control techniques in the management of wool price stablisation. Rather, the contribution is to the developmental and evaluative process involved in considering these techniques. A new econometric model of wool price and supply is also presented, since none of the existing models satisfied the requirements of the study.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1983 URL: http://purl.umn.edu/22822
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Book reviews AgEcon
Randall, Alan; Tisdell, Clement A.; Trewin, Ray; Singh, Satbir; Simmons, Phil; Adams, Philip D.; Loane, Bill.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1999 URL: http://purl.umn.edu/117037
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Book Reviews AgEcon
Hinchy, Mike; Perry, Neil; Singh, Satbir; Simmons, Phil; Moran, Dominic.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2000 URL: http://purl.umn.edu/117841
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Book reviews AgEcon
Crase, Lin; Simmons, Phil; Parton, Kevin A.; Pannell, David J..
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2004 URL: http://purl.umn.edu/117967
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Book reviews AgEcon
McCann, Laura M.J.; Crase, Lin; Wan, Guang Hua; Kingwell, Ross S.; Simmons, Phil; Malcolm, Bill; Satbir, Singh.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2001 URL: http://purl.umn.edu/117469
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Book Reviews AgEcon
Brennan, John P.; Smith, Martin D.; Templeton, Deborah J.; Materer, Susan M.; Simmons, Phil.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2003 URL: http://purl.umn.edu/116987
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Book reviews AgEcon
Hansard, Alan; Singh, Satbir; Simmons, Phil; Menz, Kenneth M..
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1998 URL: http://purl.umn.edu/117280
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Comment AgEcon
Simmons, Phil.
From my experience as a manager of economic research I believe that tertiary agricultural economics education has two major shortcomings. First, a large proportion of new graduates have poor writing skills. Their problems in this area revolve around ignorance of elementary grammar and lack of precision in written expression. The second problem that I perceive is that a significant proportion of economics graduates appear to lack any knowledge of economics. These individuals should have been failed from programs yet somehow have managed to get degrees.
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1988 URL: http://purl.umn.edu/12553
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Determination of Grade Prices for Wool AgEcon
Simmons, Phil.
The importance of welfare losses resulting from discrepancies between Australian Wool Corporation and trade valuations of different grades of wool is discussed. Cross-sectional data are used to relate variations in wool attributes to variations in price during 1976-7 and a model is derived for determining grade prices that are consistent with market valuations of different grades. The spatial consistency of the model is tested using data from eleven time periods and from two geographically isolated markets. Comparisons between trade valuations and the grade price differentials used in the Minimum Reserve Price Scheme by the Australian Wool Corporation are made.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1980 URL: http://purl.umn.edu/9345
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DOES SEPARATION THEOREM EXPLAIN WHY FARMERS HAVE SO LITTLE INTEREST IN FUTURES MARKETS? AgEcon
Simmons, Phil.
A farm financial model with leverage and investment in two farm enterprises is specified. The model is extended to incorporate futures hedging and the Separation Theorem is used to show that optimal hedging is zero. The assumption of a risk-free asset is relaxed and, while this leads to a violation of the Separation Theorem, the result that optimal hedging is zero is maintained providing that futures markets are efficient. It is concluded that if capital markets are efficient then farmers will have little interest in futures markets except to speculate.
Tipo: Working or Discussion Paper Palavras-chave: Separation theorem; Futures trading; Hedging rules; Marketing.
Ano: 1999 URL: http://purl.umn.edu/12933
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Evaluation of a Hybrid Seed Contract Between Smallholders and an MNC in East Java, Indonesia AgEcon
Simmons, Phil; Patrick, Ian; Winters, Paul C..
Three hundred smallholders near Malang in East Java were surveyed of whom 150 were participating in a hybrid seed contract with Pioneer Hybrid International Inc, an American MNC that has been contracting in the area since 1986. The objectives of the study were to determine whether the contract improved the welfare of those who participated and, if participation did improve welfare, to evaluate why this contract, in contrast to many other farm contracts in developing countries, is successful. A transaction cost framework was used to specify a framework for probit analysis of contract participation and regression analysis used to measure the contribution made by contract participation to gross margins. The empirical results suggest (i) contract selection was...
Tipo: Conference Paper or Presentation Palavras-chave: Farm Management.
Ano: 2003 URL: http://purl.umn.edu/58257
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MANAGEMENT STRATEGIES FOR INDONESIAN SMALL-HOLDER RUBBER PRODUCTION IN SOUTH SUMATRA: A BIOECONOMIC ANALYSIS AgEcon
Purnamasari, Ririn S.; Cacho, Oscar J.; Simmons, Phil.
A simplified version of the BEAM Rubber Agroforestry Model is embedded in a dynamic economic model to examine the impact of uncertainty about prices and climate on decision variables. Solutions, in terms of optimal levels for decision variables are found using a Monte Carlo stochastic framework. These solutions were used to derive risk-efficient frontiers corresponding to different levels of the decision variables. The results underline the importance of including uncertainty in dynamic bioeconomic systems since profits under uncertainty turned out to be quite different from those obtained with prices and climate assumed to be constant.
Tipo: Working or Discussion Paper Palavras-chave: Bioeconomics; Stochastic analysis; Rubber; Indonesia; Production Economics; Risk and Uncertainty.
Ano: 1999 URL: http://purl.umn.edu/12936
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Measures of Buyer Concentration in the Australian Wool Market AgEcon
Hanson, Phillip; Simmons, Phil.
The study uses empirical measures of market concentration to examine buyer competition in wool between 1974 and 1992. Three measures of concentration are examined, concentration ratios, Herfindahl indices and Lorenz curves. Data from the Australian Council of Wool Exporters are used to obtain estimates of these measures over the sample period. The results indicate that the buying sector in the Australian wool market is relatively concentrated and calculation of Spearman correlation coefficients indicate that rankings have not altered significantly in recent years.
Tipo: Journal Article Palavras-chave: Industrial Organization.
Ano: 1995 URL: http://purl.umn.edu/12330
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Potential demand for hedging by Australian wheat producers AgEcon
Simmons, Phil; Rambaldi, Alicia N..
The potential for hedging Australian wheat with the new Sydney Futures Exchange wheat contract is examined using a theoretical hedging model parametised from previous studies. The optimal hedging ratio for an `average' wheat farmer was found to be zero under reasonable assumptions about transaction costs and based on previously published measures of risk aversion. The estimated optimal hedging ratios were found by simulation to be quite sensitive to assumptions about the degree of risk aversion. If farmers are significantly more risk averse than is currently believed, then there is likely to be an active interest in the new futures market.
Tipo: Journal Article Palavras-chave: Crop Production/Industries; Marketing; Risk and Uncertainty.
Ano: 1997 URL: http://purl.umn.edu/118012
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Recent Developments in Commonwealth Drought Policy AgEcon
Simmons, Phil.
Some key elements in drought relief policy are outlined and the major themes in associated lobbying are discussed. Recent policy changes announced in 1992 are described in detail against the background of the Report of the Drought Policy Review Task Force (1990). Indifference curve analysis is used to compare recent developments with the preceding policies and the targeting problems associated with both policy regimes are discussed. It is found that the new drought relief policy is unsatisfactory in a number of ways. Discussion of the welfare implications of recent changes in drought policy is then provided and conclusions are finally drawn.
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy; Resource /Energy Economics and Policy.
Ano: 1993 URL: http://purl.umn.edu/9625
Registros recuperados: 22
Primeira ... 12 ... Última
 

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