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Всего публикаций в данном разделе: 40

Книги

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 RS T U V W 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: 31-03-2005
Fabio Bartolini, Vittorio Gallerani, Meri Raggi, Davide Viaggi
2004
The objective of the paper is to develop a methodology for supporting the evaluation and design of agri-environmental schemes. The methodology is based on a combination of mathematical programming, contract theory and multicriteria analysis and is tested on a case study in Northern Italy. The methodology proposed can add insights into the policy design process, by taking consistently into account three issues often overlooked: the adaptation of cropping systems to the measures proposed; the diversity of compliance costs among farmers; the multidimensionality of the decision problem.
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Опубликовано на портале: 07-10-2008
Steven T. Berry, Peter C. Reiss
Amsterdam: Elsevier Science, 2007
This chapter surveys empirical models of market structure. We pay particular attention to equilibrium models that interpret cross-sectional variation in the number of firms or firm turnover rates. We begin by discussing what economists can in principle learn from models with homogeneous potential entrants. We then turn to models with heterogeneous firms. In the process, we review applications that analyze market structure in airline, retail, professional, auction, lodging, and broadcasting markets. We conclude with a summary of more recent models that incorporate incomplete information, “set identified” parameters, and dynamics.
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Опубликовано на портале: 29-11-2003
Zohra Bouamra-Mechemache, Jean-Paul Chavas, Tom Cox, Vincent Requillart
2002
In a period of market liberalization and multilateral trade negotiations, price discrimination for commodities with distinct markets provides additional policy options to support farm income. While both the USA and Canada have implemented price discrimination policies in their domestic dairy sector, so far the European Union (EU) has not. This paper evaluates the options of developing a price discrimination policy in the EU dairy sector. The analysis is based on an interregional model of the EU dairy sector, involving milk production, dairy processing, and consumption of ten dairy commodities in nine regions.

The paper shows that a price discrimination policy that increases prices for commodities with more inelastic demand (fluid milk, soft dairy products) would generate income that can be redistributed to dairy farmers. The results suggest that, while such a price discrimination policy can be a WTO compatible way to support dairy farm income, the efficiency of the associated income transfers declines in the presence of significant supply response.
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Опубликовано на портале: 29-03-2005
Thomas Dax, Ingrid Machold, Deborah Roberts
2004
Drawing from the interim findings of a 2 year, EU-wide project, this paper considers the contribution the CAP makes to territorial cohesion across Europe. It is based on analysis of indicators at NUTS 3 level for the EU 27 (including Switzerland and Norway) and initial findings from a case study of CAP support in a region of Austria. Analysis shows that the incidence of Pillar 1 support is not consistent with the economic or social cohesion objectives of the EU. In particular, statistical analysis suggests that Pillar 1 support is distributed in such a way that it tends to benefit richer regions with lower unemployment rates and with higher than average population growth. Contrary to expectations, the incidence of Pillar 2 support is also inconsistent with cohesion objectives, favouring the richer areas of the EU. Reasons identified for the pattern of Pillar 2 support include differing national priorities, the uneven allocation of RDR funds and difficulties of co-financing in poorer regions. Importantly, analysis of the impact of the Mid Term Review proposals on farm incomes suggests that the latest reforms of the CAP will not improve the consistency between the CAP and cohesion. The paper discusses the key policy implications arising from the findings. It is argued that although member states are increasingly able to direct discretionary support measures towards territorial priorities, this is still only a very minor part of the CAP. As is exemplified by the case study in Austria, only a substantial comprehensive effort of rural development measures can provide compensatory territorial effects. Finally, the need for a more coherent, integrative rural development policy framework is discussed.
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Опубликовано на портале: 29-11-2003
M. del Mar Delgado, Eduardo Ramos
2002
Last decades have seen the development of a new rural policy. Different problems occurring in rural areas have pushed the EU Commission to draft policy instruments aiming to address them. However this rural policy path has not always been explicit neither has followed a continuous trend but rather has seen a series of forward and backward steps. Given the lack of a method to establish the relevance and the level of political acceptance of EU rural policy, a methodology has been developed. This methodology has tried to identify the EU political procedure trend, though this is not a formal sequence, and to establish a classification of different events according to a proposed hierarchy. Several EU documents, decisions, directives and financial resource allocations have been analysed. Within the review performed, each rural policy milestone has been classified following the proposed hierarchical chart. This has enabled the drawing of the different backs and forwards taken by this process. Besides, it has lead to the interpretation of the rural policy instruments current position in relation with other European policy instruments.
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Опубликовано на портале: 31-03-2005
Detlef Deumlich, J. Thiere, H. I. Reuter, L. Völker, R. Funk, Joachim Kiesel
2004
This paper presents a comparative method (SICOM) to evaluate complex site conditions at the level of a Federal State (Brandenburg) and at different areal units. The methodology uses primary site conditions and provides the possibility to objectively compare and judge different ecological questions. Objects with heterogeneous content are pooled in comparison groups. Consideration of the main site characteristics allows a goal-oriented allocation of subsidies. The use of SICOM is demonstrated for the wind and water erosion risk assessment across different scales from Federal State down to a parcel of land. The “parcel” aggregation-level proves to be useful to assess the erosion risk. Larger scales are less useful in the assessment of subsidies policy with regard to erosion risk. SICOM is demonstrated to be suitable for comparing and assessing regional aspects more objectively.
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Опубликовано на портале: 29-11-2003
Emilio Galdeano Gomez, Jose Cespedes Lorente, Manuel Rodrigues
2002
This paper analyses the effect of environmental and quality improvement practices on the value added of the fruit and vegetable sector. These practices form part of the incentive-based programmes established by the Common Agricultural Policy. Taking the investment in quality-environmental activities as knowledge capital, we propose a specific analysis that evaluates the effect of the factors of the production function and of the current subsidies over the value added. In general, the share of qualityenvironmental activities in the rise of the product's market value is quite high. The analysis reflects that the expenditure on these activities is still higher than their benefit, and that the current subsidies can hardly be considered encouraging factors for the development of the above-mentioned practices.
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Опубликовано на портале: 30-11-2003
Rosa Gallardo, Fernando Ramos, Eduardo Ramos
2002
The evolution of the Common Agricultural Policy (CAP), and its successive Reforms, has caused a loss of both internal coherence and social legitimacy. On the other hand, the Agenda 2000 has situated agriculture within the objective of competitiveness. What may well be asked is whether indeed the different European agricultural systems are converging towards this objective of competitiveness. To be able to reply to this question it is necessary to change from a “meso” analysis of the CAP to a “micro” analysis of farms referring to specific regions.

Starting from this context and problem, this paper analyses how the agriculture of the region of Andalusia can be affected by the competitiveness approach in an area which is in an advanced process of modernization but nevertheless maintains a strong agricultural character and a dependence on the CAP. For this analysis, we have started from the fact that farmers make strategic decisions so as to adapt to a changing political situation. The main objective of this work is to contrast the importance of a combination of structural and strategic variables to explain the differences in the competitive position of agricultural systems compared with different situations of the CAP. In order to achieve this objective, analytical instruments of competitive and strategic approaches, normally designed for individual enterprises in other economic sectors, have been used, adapting them to the agricultural system as a whole. The results allow the affirmation that the farmers who obtain the best competitive positions are those who adopt a strategic position concerning their activity, with a greater coherence between the definition of their objectives and of the resource allocation strategies they design in order to achieve them.
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Опубликовано на портале: 20-04-2004
Представлены материалы научной конференции, проведённой университетом штата Мэриленд и Аналитическим центр АПЭ 6-7 июля 2001 г. в Голицино-2. Цель конференции, посвященной исследованию рынков факторов производства в АПК России, - оценить степень изученности проблемы и наметить направления исследований в данной области по программе "Базис".
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Опубликовано на портале: 28-11-2003
Jose A. Gomez-Limon, Laura Riesgo, Manuel Arriaza
2002
In modelling farm systems it is widely accepted that risk plays a central role. Furthermore, farmers’ risk aversion determines their decisions in both the short and the long run. This paper presents a methodology based on multiple criteria mathematical programming to obtain relative and absolute risk aversion coefficients. We rely on multiattribute utility theory (MAUT) to elicit a separable additive multiattribute utility function and then estimate the risk aversion coefficients and apply this methodology to an irrigated area of Northern Spain. The results show a wide variety of attitudes to risk among farmers, who mainly exhibit decreasing absolute risk aversion (DARA) and constant relative risk aversion (CRRA).
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Опубликовано на портале: 12-12-2003
Jose A. Gomez-Limon, Laura Riesgo, Manuel Arriaza
Durban, 2003
In this paper we present a methodology to analyse input use in the agricultural sector. The novelty of the theoretical model explained is that it has been developed considering a multi-criteria environment. Thus, the optimal input use condition is determined by the assessment of "multi-attribute utility" and "multi-attribute marginal utility". We show how the approach adopted in this paper is a generalization of the single-attribute expected utility theory. The theoretical model developed is further implemented in an empirical application that studies water for irrigation use as a particular case. Results show how multi-attribute utility functions elicited for a sample of 52 irrigators explain differences on irrigation water use in relative homogenous agricultural systems, albeit exhibiting similar water partial utility functions. We conclude that these differences come from the dissimilar weights that farmers attached to each attribute in the aggregate utility function. The irrigated area considered as case study is located in North-western Spain.
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Опубликовано на портале: 04-01-2004
Geir Wachler Gustavsen, Kyrre Rickertsen
Zaragoza, 2002
Increased consumption of vegetables may reduce obesity and the prevalence of cardiac diseases and cancer. Norwegians consume less vegetables than nutrition experts recommend and the per capita consumption is lower than in most European countries.

To investigate the causes of low consumption, a two-step approach is used to estimate the demand segmented by nine different household types. In the first step, a probit model is estimated to investigate the decision whether to purchase traditional vegetables, salad vegetables, and industrially processed vegetables. Conditional on purchase, an almost ideal demand model is used to model how much to purchase. The own-price elasticities and total expenditure elasticities are high for traditional and industrially processed vegetables for most household types. Especially households with children have elastic demand. Lower value added tax or lower import tariffs for traditional and industrially processed vegetables will increase the demand for these vegetables, while reducing the price of salad vegetables seem to have a limited effect. For households with children, increased incomes have large effects on the demand for traditional and industrially processed vegetables indicating that, for example, increased child support will result in increased vegetable consumption.
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Опубликовано на портале: 31-12-2003
Yujiro Hayami, Vernon Ruttan
USA: Johns Hopkins University Press, 1985, 528 с.
Фундаментальный учебник по теории развития сельского хозяйства как отрасли. Рассматривается развитие сектора в историческом масштабе, специфика развития отрасли в развитых и развивающихся странах (с акцентом на развитие в странах с избыточной рабочей силой). В книге представлены следующие темы: аграрная экономика и её роль в общем процессе экономического развития, структурная трансформация, стратегии и модели развития сельского хозяйства и аграрная структура, взаимосвязь сельского хозяйства и промышленности, государственная политика в области сельского хозяйства, макроэкономика и сельское хозяйство, либерализация торговли сельскохозяйственной продукцией.

Опубликовано на портале: 31-12-2003
Agnar Hegrenes, Anders Ringgaard Kristensen, Gudbrand Lien
Durban, 2003
A model is presented to investigate the optimal economic life cycle of grass leys with winter damage problems in northern Norway and to determine the threshold of winter damage before it is profitable to reseed. A two-level hierarchic Markov process has been constructed using the MLHMP software. The model takes uncertainty concerning yield potential, damage estimation and weather dependent random fluctuations into account. A Kalman filter technique is used for updating of knowledge on yield potential and damage level.

The application of the model is demonstrated using data from two commercial Norwegian farms. Since parameter estimates vary considerably among farms, it is concluded that decision support concerning optimal economic life cycle of grass leys should be done at farm level. The results also show the importance of using a flexible dynamic replacement strategy. Use of the model for a specific farm situation is illustrated.
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Опубликовано на портале: 29-11-2003
Richard Howitt, Arnaud Reynaud
2002
In this paper we develop a dynamic data-consistent way for estimating agricultural land use choices at a disaggregate level (district-level), using more aggregate data (regional-level). The disaggregation procedure requires two steps. The first step consists in specifying and estimating a dynamic model of land use at the regionallevel. In the second step, we disaggregate outcomes of the aggregate model using maximum entropy (ME). The ME disaggregation procedure is applied to a sample of California data. The sample includes 6 districts located in Central Valley and 8 possible crops, namely: Alfalfa, Cotton, Field, Grain, Melons, Tomatoes, Vegetables and Subtropical. The disaggregation procedure enables the recovery of land use at the district-level with an out-sample prediction error of 16%. This result shows that the micro behavior, inferred from aggregate data with our disaggregation approach, seems to be consistent with observed behavior.
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