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| Registros recuperados: 33 | |
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| Piggott, Roley R.. |
| Certain market allocation problems involving linear average net revenue functions can be solved by linear programming. The technique can be applied to an objective function derived from linear marginal net revenue functions, the objective being to force each marginal net revenue as near to zero as possible given the constraint set. If a particular problem is suited to a linear programming solution, researchers may prefer to use this technique rather than more sophisticated optimization methods. |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 1975 |
URL: http://purl.umn.edu/22550 |
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| Ashfaq, Muhammad; Parton, Kevin A.; Griffith, Garry R.; Piggott, Roley R.. |
| Government price policy in Pakistan affects both the supply and demand of wheat. The wheat market has been established in a particular idiosyncratic manner in Pakistan, and a thorough appraisal of policy needs to take this into account. Hence, to analyse various policy interventions, this study develops a multi-level wheat market model. After considering the real world aspects of the wheat marketing chain, a conceptual framework is developed involving five market levels. This is then translated into a multi-equation econometric model. The model is based on secondary time series data from 1971 to 1996. It consists of equations representing supply, demand, stock holding, importing and price formation. The model is used to estimate changes in consumer... |
| Tipo: Presentation |
Palavras-chave: Crop Production/Industries; Marketing. |
| Ano: 1999 |
URL: http://purl.umn.edu/123757 |
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| Griffith, Garry R.; Jamandre, W.E.; Piggott, Roley R.. |
| For tomatoes, potatoes, carrots and onions in the Sydney market, the degree of variability of the retail price is substantially lower than the degree of variability of the wholesale price. The objective here is to investigate whether fresh vegetable retailers in the Sydney market practice price levelling and price averaging. 2SLS and 3SLS procedures were used to estimate a system of price spread equations for the four vegetables using quarterly data from 1980 to 1990. In the preferred 3SLS estimates price levelling was confirmed for potatoes and carrots. Price levelling was not evident in the tomatoes and onions equations, with price transmission influenced more by markup pricing policies for these vegetables. No evidence of price-averaging behaviour was... |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1992 |
URL: http://purl.umn.edu/12502 |
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| Piggott, Roley R.. |
| An analytical framework is developed for assessing the relative gains accruing to co-operators and non co-operators in a cartel arrangement involving production quotas. Key parameters determining the relative gains are identified. The values of these parameters in the context of Australian agriculture could result in greater gains for non co-operators than for co-operators. Suggestions are offered on some types of information that should be sought in feasibility studies before cartels are established. |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 1981 |
URL: http://purl.umn.edu/22627 |
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| Zhao, Xueyan; Mullen, John D.; Griffith, Garry R.; Griffiths, William E.; Piggott, Roley R.. |
| Around $100 million has been spent annually on R&D and promotion in the Australian red meat industries in recent years. The R&D investments are made throughout the production, processing and marketing chain in both the grass and grain finished sectors. Promotion investments are made in both export and domestic markets. Despite this large investment of industry and government funds there is great uncertainty about the returns from these investments. Not only is it unclear what the total industry returns are but it is even less clear how producers and the community benefit from the many alternative investment options. Hence, it is unclear how funds should be allocated between these alternatives. Zhao (1999) addressed these issues in research for... |
| Tipo: Report |
Palavras-chave: Industrial Organization; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2000 |
URL: http://purl.umn.edu/28007 |
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| Moir, Brian; Piggott, Roley R.. |
| In this paper a preliminary analysis is presented of a combined buffer-fund and buffer-stock as an alternative to a pure buffer-fund or a pure buffer stock for stabilising wool prices. The alternatives analysed are designed so that each provides the same prices to producers as did the Reserve Price Scheme over the period of analysis. Least-cost combinations of policy instruments are derived. The results show that there is considerable potential for cost savings to be made by combining buffer-fund and buffer-stock instruments. |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1991 |
URL: http://purl.umn.edu/22925 |
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| Piggott, Roley R.. |
| Some recent analyses relating to gross revenue instability have used a procedure for decomposing the variance of gross revenue into components attributable to price variability, quantity variability and interaction between these. This paper offers some criticisms of the procedure and outlines an alternative procedure which divides the variance of gross revenue into components due to demand variability, supply variability and interaction between these. The procedure is used to investigate the causes of instability in quarterly beef revenues in the Australian beef industry. Since demand and supply variability are both important contributors to beef revenue instability, direct market intervention to stabilise beef industry revenues would be a complex and... |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1978 |
URL: http://purl.umn.edu/22725 |
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| Dent, Siobahn K.; Piggott, Roley R.; O'Donnell, Christopher J.; Griffith, Garry R.. |
| Australian broadacre agriculture is typified by strong cross-commodity relationships, where sheep and cattle grazing enterprises compete for pasture and both compete with wheat and other crops for land. Further, some commodities produced by multi-product farms are also used in the production of final products that are substitutes in demand, such as beef and lamb. Economic analyses of the beef market, for example, should also include consideration of the market for the related product, lamb. In this paper the effects of exogenous demand and supply shifters on the wholesale-farm price ratio in two closely related industries, beef and lamb, are examined in a Gardner type of model and the effects of excluding consideration of the cross-commodity interactions... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Marketing margins; Beef; Lamb; General equilibrium elasticities; Demand and Price Analysis. |
| Ano: 2003 |
URL: http://purl.umn.edu/57859 |
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| Piggott, Roley R.. |
| A model is developed to show how changes in the elasticity of the supply function at the farm level offset increased levels of buyer (processor) concentration such that given percentage increases in demand by large buyers result in the same, or smaller, percentage price changes than do increases in demand on the part of small buyers. Since the incentive for collusive buying is a function of the potential price increases which follow demand increases, there may be little incentive for buyers to collude even if they are highly concentrated. |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1970 |
URL: http://purl.umn.edu/22409 |
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| Myers, Robert J.; Piggott, Roley R.; Tomek, William G.. |
| Vector autoregression (VAR) methods are used to analyse the contribution of supply, demand and policy shocks to unpredictable fluctuations in the market for Australian wool. VAR procedures are compared with conventional structural econometric models as methods for decomposing sources of instability. While each has advantages and disadvantages, VAR procedures might be viewed as preferable when the underlying market structure is complex and uncertain, as it is in the case of wool. Based on the results obtained, demand shocks are the dominant source of uncertainty in the wool market in the absence of Australian Wool Corporation intervention, but intervention has blunted their effects, reducing market uncertainty and increasing the average level of prices and... |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1990 |
URL: http://purl.umn.edu/22357 |
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| Nightingale, John J.; Piggott, Roley R.; Griffith, Garry R.. |
| Our objective in this paper is to review the origins and main points of theories of firm behaviour used in economic theory and strategic management, with particular reference to the food marketing chain. We argue that while neoclassical economics may provide a robust framework in which to understand market outcomes for long run atomistic competition, such as conventionally modelled by agricultural economists, modern developments in both economics and strategic management add substantially to our ability to explain firm and market structures in the food marketing chain. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Industrial Organization; Marketing. |
| Ano: 2002 |
URL: http://purl.umn.edu/12939 |
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| Registros recuperados: 33 | |
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