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| Gryson, N.; Eeckhout, M.; Neijens, T.. |
| Measures are being developed and implemented enabling the co-existence of conventional, genetically modified (GM) and organic cropping systems. In order to segregate GM from conventional crops in the entire supply chain, a food or feed company has to reorganise its production. This may involve for dedication of the production line to non-GM, or production can be organised on the same plant, using spatial or temporal segregation. In practice, only the latter method is used in the feed industry, as no investments in new machinery are necessary in the case. The segregation and identity preservation of GM and non-GM crops has to be well organised. An important tools used to proof the identity of the imported raw materials is the batch or product declaration... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: GMO; Co-existence; Costs; Segregation; Identity preservation; Compound feed; Agribusiness. |
| Ano: 2008 |
URL: http://purl.umn.edu/44418 |
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| Oddou, Remy. |
| This paper analyzes the effect of spillovers and congestion of local public goods on the segregative properties of endogenous formation of jurisdiction. Households living in the same place form a jurisdiction and produce a local public good, that creates positive spillovers in other jurisdictions and suffers from congestion. In every jurisdiction, the production of the local public good is financed through a local tax on household's wealth. Local wealth tax rates are democratically determined in all jurisdictions. Households also consume housing in their jurisdiction. Any household is free to leave its jurisdiction for another one that would increase its utility. A necessary and sufficient condition to have every stable jurisdiction structure segregated by... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Jurisdictions; Segregation; Spillovers; Congestion; Environmental Economics and Policy; C78; D02; H73; R13. |
| Ano: 2011 |
URL: http://purl.umn.edu/108259 |
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| Wilson, William W.; Jabs, Eric J.; Dahl, Bruce L.. |
| A stochastic optimization model was developed to determine optimal testing strategies, costs, and risks of a dual marketing system. The model chooses the testing strategy (application, intensity, and tolerance) that maximizes utility (minimizes disutility) of additional system costs due to testing and quality loss and allows simulation of the risk premium required to induce grain handlers to undertake a dual marketing system versus a Non-GM system. Cost elements including those related to testing, quality loss, and a risk premium were estimated for a model representing a grain export chain. Uncertainties were incorporated and include test accuracy, risk of adventitious commingling throughout, and variety declaration. Sensitivities were performed for... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Segregation; Testing; Tolerance; Genetically Modified; Wheat; Risk Premium; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2003 |
URL: http://purl.umn.edu/23605 |
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| Gallo, Edoardo. |
| Many social networks have the following properties: (i) a short average distance between any two individuals; (ii) a high clustering coefficient; (iii) segregation patterns; the presence of (iv) brokers and (v) hubs. (i) and (ii) define a small world network. This paper develops a strategic network formation model where agents have heterogeneous knowledge of the network: cognizant agents know the whole network, while ignorant ones are less knowledgeable. For a broad range of parameters, all pairwise Nash (PN) networks have properties (i)-(iv). There are some PN networks with one hub. Cognizant agents have higher betweenness centrality: they are the brokers who connect different parts of the network. Ignorant agents cause the emergence of segregation... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Network; Cognitive Network; Small World; Broker; Segregation; Institutional and Behavioral Economics; C72; D85. |
| Ano: 2009 |
URL: http://purl.umn.edu/50712 |
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| Hatwell, Bronwyn; Pluske, Johanna M.. |
| The Gene Technology Regulator's approval of Bayer CropScience's genetically modified (GM) canola variety, InVigor, and Monsanto's Roundup Ready, means that the commercial planting of Australia's first GM food crop is imminent. Under such circumstances, for Australia to continue marketing non-GM canola and comply with worldwide labelling requirements segregation must be implemented. This study investigates the cost effectiveness of three possible segregation methods. In considering each of these methods the increase in total grain handling cost due to segregation is expected to be between 5 and 9 per cent, or $1.35/tonne and $2.70/tonne. Such an increase is comparable with segregation costs reported in current Canadian literature. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: GM canola; Segregation; Supply chain; Agribusiness; Crop Production/Industries; Marketing. |
| Ano: 2004 |
URL: http://purl.umn.edu/58702 |
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| Henry, Benjamin; Wilson, William W.; Dahl, Bruce L.. |
| Development of genetically modified (GM) and specialty crops has had a great impact on the grain handling industry during recent years. Added costs associated with handling these crops have become an important issue for grain handlers. For this study, data were collected from a survey of elevators in the Upper Midwest. The information focused on segregation practices, time requirements, and costs. This study shows the different costs (grading and handling) associated with segregation practices at the grain-handler level. The results revealed that the cost of modifying systems to handle GM is of major importance. A stochastic simulation model of an engineering cost function is developed to analyze costs for segregation and testing using results from the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Genetically modified crops; Identity preservation; Segregation; Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/23557 |
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| Wilson, William W.; Dahl, Bruce L.. |
| Development of genetically modified crops is challenging the functions of the grain marketing system with many participants arguing for Identity Preservation systems prior to release of GM varieties. In this study, a stochastic optimization model was developed to determine optimal testing strategies. The model chooses the optimal testing strategy that maximizes utility (minimizes disutility) of additional system costs due to testing and rejection and allows estimation of the risk premium required for sellers to undertake a dual marketing system with GM/Non-GM segregations over the current Non-GM system. Elements of costs (testing costs, rejection costs, and risk premium) were estimated for a base model representing a grain export chain. The model... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Genetically modified organisms; Biotechnology; Wheat; Risk; Segregation; Identity preservation; Crop Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/23480 |
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| Registros recuperados: 50 | |
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