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| Registros recuperados: 165 | |
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| Wilson, William W.; Dahl, Bruce L.; Carlson, Donald C.E.. |
| Supply chain management in grain marketing has become very important with the maturity of the industry. This is particularly important in the Canadian grain marketing system which has experienced disruptions for various reasons over many years. These problems have been the topic of numerous industry evaluations, have resulted in a complaint about service obligations and recently have been addressed by the Estey Commission. A detailed model of the supply chain in the Canadian grain logistics system was developed in this paper to evaluate factors that cause disruptions, as well as the effect of several important logistics and marketing strategies on system performance. The results indicated that in a normal year there is sufficient randomness throughout... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Grain Marketing; Transportation; Supply Chain Management; Logistics; Marketing. |
| Ano: 1998 |
URL: http://purl.umn.edu/23159 |
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| Wilson, William W.; Dahl, Bruce L.. |
| Bidding competition plays an important role in price discovery and the determination of suppliers in international grains. In this paper we analyze international bidding competition for wheat for a specific importer. Tender data over the period 1993-1999 were analyzed and bid functions estimated by class of wheat (hard red spring, hard amber durum, and hard red winter denoted as HRS, HAD, and HRW, respectively) and by selling firm. A stochastic simulation model was developed to determine the optimal bid and to analyze factors affecting bidding behavior and competition. The tender data indicated there was a surprisingly wide range of bids. Variation of bids across firms submitted for individual HRS tenders had standard deviations that ranged from $5/mt... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Auction; Bidding; Wheat tenders; Optimal bid; U.S.; Canada; Marketing. |
| Ano: 2000 |
URL: http://purl.umn.edu/23285 |
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| Yang, Seung-Ryong; Koo, Won W.; Wilson, William W.. |
| This study examines three alternative models of correcting for heteroskedasticity in wheat yield: the time trend variance, the GARCH, and an econometric model that includes the potential sources of heteroskedasticity. Nonnested test results suggest that modeling the sources of heteroskedasticity is the preferred procedure. Including potential sources of heteroskedasticity as explanatory variables removed the heteroskedasticity in the sample wheat yields. The results also suggest that the GARCH specification is a promising model of correcting for heteroskedasticity when the sources cannot be identified. The time trend variance model alone may misspecify the true variance structure. |
| Tipo: Journal Article |
Palavras-chave: Production Economics; Research Methods/ Statistical Methods. |
| Ano: 1992 |
URL: http://purl.umn.edu/30738 |
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| Dahl, Bruce L.; Wilson, William W.; Johnson, D. Demcey; Nganje, William E.. |
| Variety release decisions involve a number of tradeoffs, usually between grower and end-user characteristics as well as significant uncertainties about agronomic, quality, and economic variables. In this study, methodologies were developed to value tradeoffs for grower and end-user characteristics for wheat. The models capture effects of variability in agronomic, quality, and economic variables. The models were applied for three experimental varieties which have since been released and for two hypothetical varieties. Results indicate two of the experimental varieties provide improvements in grower and end-use value over most of the incumbents. Comparison of a risk adjusted portfolio model consisting of characteristics of end-use and grower values... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Variety Development; Grower Value; End-user Value; North Dakota; Tradeoffs; Stochastic Dominance; Portfolio Value; Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/23590 |
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| Wilson, William W.; Wagner, Robert; Nganje, William E.. |
| Price risk management problems confronting grain processors differ somewhat from conventional motives for hedging. There are two components of this problem that are addressed in this study. One is the competitive characteristics of the processing sector, the structure and conduct of which ultimately determines the relationship between input and output prices. In some cases, these are highly correlated and in others they are not. The second refers to the hedge horizon, or, how far forward a firm should cover its inevitable short cash positions. This study incorporates these two components of hedging into a mean-variance framework to evaluate how they impact price risk management decisions for processors. A theoretical model is developed which is then... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Hedging; Optimal hedge ratios; Food processors; Risk management; Marketing. |
| Ano: 2003 |
URL: http://purl.umn.edu/23637 |
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| Wilson, William W.; Priewe, Steven R.; Dahl, Bruce L.. |
| In the late 1980s, grain-hauling railroads began offering alternatives that have made shipping decisions more strategic. Shippers now confront alternatives ranging from nearby and unguaranteed ordering to various durations of forward and guaranteed shipment. Each has varying penalties for cancellation and payments from the railroad for nonperformance, and differing risks and payoffs. Because of the configuration of choices, shippers confront a portfolio of shipping alternatives. A dynamic stochastic simulation model was developed to analyze alternative strategies. The model includes the effects of uncertainties in tariff rate changes, car premiums, basis levels, forward and spot grain purchases, and receiving railcars under each of three alternatives.... |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 1998 |
URL: http://purl.umn.edu/31201 |
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| Wilson, William W.; Dahl, Bruce L.; Johnson, D. Demcey. |
| One of the major trade policy problems identified by U.S. interests, including grower groups, traders, and policymakers, is that of pricing transparency. This has been a gnawing issue generally related to the pricing practices of competitor exporting countries with state trading enterprises (STEs). The transparency problem generally refers to the inability to observe rivals' terms of trade (including price, quality, credit, etc.) and is normally associated with commercial exporters competing against STE rivals. The perception being the less transparent competitors (STEs) would have a strategic advantage. A game theory model of bidding competition was developed to simulate the effects of information asymmetry amongst rivals. A Bayes-Nash equilibrium... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Price Transparency; Strategic Bidding; Game Theory; Bayesian-Nash; State Trading Enterprises; Export Enhancement Program; Wheat; International Relations/Trade. |
| Ano: 1999 |
URL: http://purl.umn.edu/23403 |
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| Nganje, William E.; Kaitibie, Simeon; Wilson, William W.; Leistritz, F. Larry; Bangsund, Dean A.. |
| Fusarium Head Blight (FHB), commonly known as scab, has been a severe problem for wheat and barley producers since 1993. This study provides an update of economic losses suffered by wheat and barley producers in scab-affected regions in the United States. Emphasis is placed on estimating direct and secondary economic impacts of yield and price losses suffered by wheat and barley producers from 1993 to 2001. Nine states are included in the analysis for three wheat classes. Three of the nine states were also used for the analysis of malting and feed barley. The cumulative direct economic losses from FHB in hard red spring (HRS) wheat, soft red winter (SRW) wheat, durum wheat, and barley are estimated at $2.492 billion from 1993 through 2001. The... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fusarium Head Blight; Scab; Vomitoxin; Crop losses; Wheat; Barley; Crop Production/Industries. |
| Ano: 2004 |
URL: http://purl.umn.edu/23627 |
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| Dahl, Bruce L.; Wilson, William W.. |
| Export patterns for U.S. and Canadian hard wheats (HAD, HRS, HRW, CWRS, and CWAD) were examined. Analysis incorporated grade and non-grade factors from U.S. shipments and grades and classes of Canadian exports. Shift-share analysis was used to examine changes in market shares for classes and grades. Cluster analysis was used to group importers of U.S. wheat classes based on like grade and non- grade factors of wheat shipments. Canada exports most of its hard wheat as No. 1, while the U.S. exports predominately No. 2 or better. Classes experiencing increased market shares include HRS, CWRS, and CWAD. U.S. HRS, HRW, and HAD all showed patterns of increasing market shares for No. 1 over lesser grades from the early 1980s to 1990s. Importer comparisons... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Demand and Price Analysis; International Relations/Trade. |
| Ano: 1996 |
URL: http://purl.umn.edu/23379 |
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| Schlecht, Shannon M.; Wilson, William W.; Dahl, Bruce L.. |
| Special segregations that provide unique qualities for end use products are being specified by buyers. As users of wheat become more specific about quality, the number of quality segregations that the logistical pipeline must accommodate increases. The additional cost of increased grain segregations will influence the optimal level of wheat variety segregations marketed in a supply chain. The primary objective of this research is to develop a model that captures the logistical costs of increased grain segregations in the marketing system. A simulation model was developed to add logistical uncertainty in demand, receipts, rail deliveries, and transit time. Sensitivities were conducted on certain variables to determine their effects on logistical... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Wheat; Segregations; Crop Production/Industries. |
| Ano: 2004 |
URL: http://purl.umn.edu/23507 |
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| Registros recuperados: 165 | |
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