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| Registros recuperados: 44 | |
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| Demont, Matty; Tollens, Eric. |
| In literature, impact estimates of agricultural biotechnology vary strongly according to the region, the crop, the year, the scale, and the methodology of the study. Therefore, this paper provides a methodological background for analysing, interpreting, and comparing these estimates. All possible uncertainties entailed in the estimation procedure are reviewed as well as a methodology to incorporate them into a stochastic simulation model. This procedure can be used to assess the welfare effects of agricultural biotechnology in the European Union. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2001 |
URL: http://purl.umn.edu/31828 |
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| Dillen, Koen; Demont, Matty; Tollens, Eric. |
| After more than a decade of GM crops, literature reports farmers and consumers can gain significantly from the technology, despite the intellectual property rights assigned to the innovator. In this paper we assess the effect of heterogeneity on this distribution of benefits. A two dimensional framework is created to assess the ex ante benefits of an innovation. Given this setting and the scarce data often available, a parametric modelling approach is taken. The two dimensions of heterogeneity, spatial and temporal, are explicitly modelled as they have a different importance for different technologies. Using this framework we can simulate different corporate pricing strategies and evaluate the benefits generated under changing heterogeneity. The framework... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Heterogeneity; Parametric modelling; Ex ante; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2008 |
URL: http://purl.umn.edu/43945 |
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| de Venter, Katrien; Demont, Matty; Tollens, Eric. |
| Through Monte Carlo simulation techniques, all possible scenarios are analyzed of the impact of the potential adoption of genetically modified herbicide tolerant sugar beets on the economics of Belgian sugar beet growers. The most likely gain for the average Belgian sugar beet grower amounts to 125 /ha. Assuming an adoption rate of 75%, this transates into a total benefit foregone of 9 million for Belgian agriculture in the agricultural season 1998-1999. Three quarters of this benefit are absorbed by the farmers, while one quarter, i.e. 3 million, is extracted by the gene developers and seed suppliers. This refutes the argument of a seed industry extracting all benefits from biotechnology innovations. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Production Economics; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2002 |
URL: http://purl.umn.edu/31847 |
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| Tollens, Eric. |
| A performing market information system (MIS) is a key accompanying measure to market liberalization. The paper discusses the objectives and purposes of a MIS, its ideal characteristics and its concept and implementation, based on experiences with the cocoa and coffee MIS set up and presently operating in three liberalized African export commodity markets. A phased approach is suggested, with each phase being well defined and launched sequentially. The timing and location of the MIS unit, the dissemination strategy and the financing are discussed. An appropriate dissemination strategy is of vital importance to reach all intended beneficiaries. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Marketing; International Relations/Trade. |
| Ano: 2002 |
URL: http://purl.umn.edu/31860 |
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| Demont, Matty; Houedjoklounon, Alexandre; Hounhouigan, Joseph; Mahyao, Adolphe; Orkwor, Gabriel; Stessens, Johan; Tollens, Eric; Toure, Moustapha. |
| The present study which started in 1999 is framed in the INCOYAM project. Marketing systems of yam are analyzed in three West- African countries: Cote d'Ivoire, Benin and Nigeria. Surveys have been carried out on urban (wholesales and retailers) and rural (collectors) traders. Cities and production regions have been selected in function of their socio-economic characteristics. As a result, in the three countries data has been collected in an important consumption pole, a commercial redistribution pole and a production pole. The degree of precision of the data varies from one country to another due to asymmetric financing. This situation did not allow establishing an equilibrated comparison of yam marketing systems. The three countries commercialize... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Industrial Organization; Marketing. |
| Ano: 2003 |
URL: http://purl.umn.edu/31861 |
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| Tollens, Eric; Demont, Matty; Swennen, Rony. |
| Agricultural production almost needs to double in the 21st century, putting tremendous pressure on agricultural resources. Most food production increases must come from more agricultural intensification in the South. This advances the need for a new green revolution: higher productivity and at the same time less pressure on the environment. Agrobiotechnology can contribute to this double green revolution. Biotechnology innovations are often scale neutral and are therefore suitable for small farmers. Moreover, genetic modification offers especially advantages for crops domesticated since a very long time and which are therefore quite different from their wild relatives. However, agrobiotechnology also engenders risks and dangers, outlined in the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2003 |
URL: http://purl.umn.edu/31837 |
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| Demont, Matty; Tollens, Eric. |
| Since 1995, genetically modified organisms (GMOs) have been introduced commercially into US agriculture. These innovations are developed and commercialised by a handful of vertically coordinated "life science" firms who have fundamentally altered the structure of the seed industry. Enforcement of intellectual property rights (IPRs) for biological innovations has been the major incentive for a concentration tendency in the upstream sector. On the one hand, this monopolisation may increase long-run social welfare through an increased rate of investment in R&D. On the other hand, due to their monopoly power, these firms are capable of charging a "monopoly rent", extracting a part of the total social welfare. A popular argument used by the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2001 |
URL: http://purl.umn.edu/31857 |
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| Demont, Matty; Tollens, Eric. |
| In this working paper we attempt to establish a general analytical framework for the calculation of the micro- and macroeconomic benefits and costs of biotechnology applications in EU agriculture. Since these innovative applications are typically protected by intellectual property rights, standard welfare analyses will overestimate total benefits generated by these innovations. On the other hand, this doesn't mean that innovators are extracting all of the benefits. A recent ex-post welfare analysis on US Bt-cotton shows that farmers have captured the largest share of benefits (Falck-Zepeda, Traxler and Nelson, 1999). Due to the importance of intellectual property rights and the consolidation of the agricultural input industry, the framework presented... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1999 |
URL: http://purl.umn.edu/31845 |
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| Demont, Matty; Jouve, Philippe; Stessens, Johan; Tollens, Eric. |
| The literature on the evolution of farming systems in West Africa shows a large diversity of general theories on rural development. The purpose of this study is to revisit the theses of Malthus and Boserup and empirically test them on a case study of Northern Cote d'Ivoire. We have at our disposal a database spread over three agricultural seasons (1995-1998) and three villages. These villages differ strongly regarding their population density and historical genesis. The comparison between these villages permitted to track down their stage in the evolution of farming systems and to identify population pressure as a key factor of the evolution of farming systems and to identify population pressure as a key factor of the evolution process of farms. Our... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Community/Rural/Urban Development. |
| Ano: 2004 |
URL: http://purl.umn.edu/31838 |
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| Dillen, Koen; Demont, Matty; Tollens, Eric. |
| Since most of the recent agricultural biotechnology innovations have been developed by private companies, the central focus of societal interest is on the distribution of the gains from these technologies among all stakeholders. In a partial equilibrium model, assuming perfect corporate pricing strategies given the heterogeneous population of potential adopters, we model the worldwide introduction of GM sugar beet. The introduction is modelled under both the old and new CMO for sugar in the EU. We see GM sugar beet could bring great benefits to both consumers in the world and sugar beet producers even when the innovation is protected by intellectual property rights and the innovator uses his restricted monopoly to the full extend. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: GM; Sugar beet; Partial equilibrium; Agricultural and Food Policy; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/43944 |
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| Demont, Matty; Wesseler, Justus; Tollens, Eric. |
| The decision of whether to release transgenic crops in the EU is one subject to flexibility, uncertainty, and irreversibility. We analyse the case of herbicide tolerant sugar beet and reassess whether the 1998 de facto moratorium of the EU on transgenic crops for sugar beet was correct from a cost-benefit perspective using a real option approach. We show that the decision was correct, if households value possible annual irreversible costs of herbicide tolerant sugar beet with about 1 E or more on average. On the other hand, the total net private reversible benefits forgone if the de facto moratorium is not lifted are in the order of 169 Mio E per year. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2002 |
URL: http://purl.umn.edu/31859 |
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| Dillen, Koen; Demont, Matty; Tollens, Eric. |
| Although the EU is still in a quasi moratorium stage concerning GM crops, doors for GM crops in the sugar industry seem to open. Herbicide tolerant sugar beet could mean a boost for the sugar beet sector. The ex ante impact assessment shows a created welfare of 15 billion during 1996-2014. The rule of thumb found in ex post impact studies of a sharing out between downstream and upstream sector of 2/3 versus 1/3 is seems to be applicable to this case as well. The sugar beet sector and consumers worldwide are the winners while cane growers lose due to technology eroded world prices. The reform of the EU Common market organization for sugar in 2006 seems to create an incentive for innovation to efficient European sugar producers. Crowding out of inefficient... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2007 |
URL: http://purl.umn.edu/9783 |
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| Demont, Matty; Tollens, Eric. |
| Crop protection is a part of the agricultural production system. In Europe during the past century, this system has been subject to innovation, stemming from the second agricultural revolution of the Modern Time. Today we are on the crossroad of three alternative agricultural systems. Conventional agriculture is the product of the second agricultural revolution. So far, biotechnological agriculture seems to continue these trends. Organic agriculture on the other hand is a reaction on the paradigm of the second agricultural revolution, especially regarding the negative environmental externalities engendered by this revolution. Today, conventional agriculture is under pressure. Two alternatives have emerged: organic and biotechnological agriculture. Which... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Production Economics; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2000 |
URL: http://purl.umn.edu/31839 |
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| Tollens, Eric. |
| The paper deals with the emergence and rise of market information systems in sub-Sahara Africa as a result of economic liberalization. There has already been an evolution is such systems and no particular system dominates. Various types of market information systems exist today, public or private, all or not linked to a commodity exchange. The rationale of a commodity exchange is discussed, linked to a market information system. They all struggle with problems of sustainable financing. Very few if any good impact studies exist on such systems, demonstrating their effects on market transparency, information asymmetry, the bargaining power of poor farmers and their market access. Dissemination of the information, using traditional (radio) or modern (ICT)... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Marketing; Q13; Q18; O13; O17; H41. |
| Ano: 2006 |
URL: http://purl.umn.edu/25590 |
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| Registros recuperados: 44 | |
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