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Всего публикаций в данном разделе: 37

Авторы:
все А Б ВГ Д Е ЖЗИ ЙК Л М Н О П Р С Т У ФХ ЦЧ Ш ЩЭЮЯ
A B C D E F G H I J K L M N O P Q R S T U VW X Y Z
 
Названия:
А БВ Г Д ЕЖЗ И ЙК ЛМ Н О П Р С Т У ФХЦ ЧШЩЭ ЮЯ
A B C D E F G H I JKL M N O P Q R S T U V W XY Z
 

Опубликовано на портале: 28-11-2003
Maria Raquel Ventura-Lucas, Maria de Lurdes Ferro Godinho, Rui Sousa Fragoso
2002
Sustainable agriculture implies the exploitation of natural resources now, without compromising the natural resources stocks for the future generations. In the context of the paper, agricultural sustainability takes place at the interface between agriculture and the environment. The focus is on the interplay between farming systems and agrienvironmental policies. Agricultural policies have major impacts on soil and water quality and on bio-diversity. Support commodity price policies have lead to serious problems of water pollution; high levels of soil erosion; nitrate losses and lost of biodiversity. The semi decoupeted income support policies and the introduction of the agrienvironmental schemes under the 1992 CAP reform were the first attempts to correct the negative aspects of the production-orientated policies. For the first time farmers were regarded as countryside and landscape keepers and as environmental conservationists. Under the 2000 Agenda similar emphasis was given to the sustainability of agriculture. The objective of this paper is to evaluate the impact of the different agri-environmental policies on typical farming systems and consequently their effects on water pollution, soil erosion and bio-diversity/landscape. A bio-economic model, integrating a mathematical programming model and crop growth simulation model, is applied to estimated the changes in the levels of nitrogen leaching and soil erosion, and in the degree of bio-diversity under the current and proposed agricultural policy scenarios. The following farming systems are studied: dry land cereal farming systems (intensive and extensive), livestock and irrigated farming systems using conventional and conservation farming technologies. The results show The results show that the main changes on water pollution, soil erosion levels and biodiversity are mainly due to changes in price and arable compensatory payments. The agri-environmental measures are more important as farm income source than as a policy instrument to influence environmental parameters.
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Опубликовано на портале: 29-11-2003
Tom Vernimmen, Marie Bourgeois, Guido Van Huylenbroeck, Henk Meert, Etienne Van Hecke
2002
One of the common strategies in rural development programmes is to support the adoption of new on-farm activities. The rationale behind this is that farm diversification is a way to assure an appropriate level of income for the farmers. Through interviews with 49 relatively small farmers, the possibilities for diversification as a survival strategy are assessed. The analysis is mainly based on a classification of development pathways by Bowler (1992). Few forms of diversification appear to be successful as a survival strategy in case of economic problems. Only off-farm employment seems to be effective in this respect. The introduction of new activities on marginal farms is hampered by lack of financial and human capital. On the other hand, diversification is often found on small farms without financial problems. This is an indication that on-farm diversification is able to stabilize the household income and to avoid financial problems when it is used as a preventive strategy.
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Опубликовано на портале: 29-03-2005
Bruno Vindel
2004
Complying with the legal framework of EU regulation 1257/99, the implementation of the rural development pillar of the CAP in France takes over several measures constitutive of previous programs, and institutes significant innovations, reflecting both the evolution of French rural territories and the political choice of a more sustainable and multifunctional agriculture. That is why, before describing the organisation and methodology of the recently completed midterm evaluation, this paper emphasises the present trends of evolution in French rural zones. The lessons learned from the evaluation will be then detailed, in the third part of the paper.
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Опубликовано на портале: 16-02-2005
Jacob Viner
1999
Основная цель настоящей статьи - изложить метод графического описания зависимости кривой затрат от возможных типов технологических ситуаций и ситуаций, связанных с денежными затратами, с учетом обычного в этом случае предположения о наличии атомистической конкуренции и рациональном экономическом поведении производителей. Автор не делал попытки реалистического описания существующих типов зависимости между затратами и предложением и считал, что его задача скромнее: представить формальные типы зависимости, которые возможны при определенных упрощающих предположениях. Но в итоге ему удалось предложить графическую интерпетацию кривых средних и предельных затрат, которую можно встретить сегодня в любом учебнике по микроэкономике.
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Опубликовано на портале: 12-12-2003
W. Kip Viscusi, John M. Vernon, Joseph E. Harrington
Cambridge, Mass: MIT Press, 2000, 896 с.
Departing from the traditional emphasis on institutions, this text emphasizes the use of economic theory and empirical analysis to understand regulatory and antitrust policies. Questions addressed include: What are the market failure rationales for, and appropriate form of, government intervention? What does theory show about competition in the presence of a market failure and the implications of government intervention to correct that failure? What do empirical analyses indicate about our regulatory experience and the direction of future intervention?

The third edition addresses many issues that have recently dominated the economic and political landscape. New material reviews the government's case against Microsoft, charges of anticompetitive pricing in NASDAQ and airlines, the blocked Staples-Office Depot merger, and the Telecommunications Act of 1996. This edition also covers the deregulation of the California electric power industry as well as recent deregulatory efforts in bank branching and natural gas transmission. On the social regulatory scene, it covers in detail recent cigarette litigation and the contentious issue of the contingent valuation of natural resource damages, as exemplified in the Exxon Valdez oil spill. New empirical evidence appears throughout the book.

Each part of the text can be used separately for a variety of courses including regulation and antitrust in undergraduate institutions, business schools, and schools of public policy, as well as background for doctoral courses. Exercises are included at the end of each chapter.
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Опубликовано на портале: 29-11-2003
Liesbet Vranken, Johan Swinnen
2002
This paper uses data from a survey of more than 1,400 farming households in Hungary to identify a set of profiles of farming households, which are active in the rental market and to estimate econometrically the impact of household characteristics, such as social, physical, and human capital, as well as regional and environmental characteristics on land rental activities. We show that the decision of farming households to lease in land is related to their land endowment, their access to capital assets, human capital variables such as age and education and their social capital. Environmental factors are also important.
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Опубликовано на портале: 31-12-2003
Edilegnaw Wale, Detlef Virchow
Durban, 2003
Crop genetic resources are the building blocks of sustainable agricultural development due to their relevance not only as inputs for variety development but also as indigenous crop insurance mechanisms through traditional variety portfolio management. Their continuous survival is, however, threatened by natural and human driven factors. This threat has induced the need for designing conservation measures. Among the in situ and ex situ conservation options available to conserve crop genetic resources, on-farm conservation has recently attracted enormous attention. To make this option operational, placing incentives (that link conservation with utilization) and removal of perverse incentives are believed to be crucial so that landraces of no immediate interest to farmers can be conserved.

However, before designing sound incentives and/or removing perverse incentives, we have to understand farmers. motives for managing a portfolio of traditional varieties.

To address our objective, we have adopted a utility based model that considers on-farm diversity as a positive externality of farmers. livelihood decisions. Accordingly, on-farm diversity is considered as the derived outcome of farmers. revealed preferences subject to their concerns and constraints. To empirically test the relationships, a Poisson regression model is estimated using rural household survey data collected from 198 sorghum growing farmers in East Ethiopia. The results have shown the most important diversity promoting factors and those factors detaching the link between farmers’ ‘survival first’ motives and their spillover effects on sorghum diversity. Based on the results, the paper concludes outlining the policy implications of the findings.
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