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Всего публикаций в данном разделе: 352

Авторы:
АБ ВГДЕЖЗИЙК Л МНОП Р С ТУ ФХЦЧШ ЩЭЮЯ
A B C D E F G H I J K L M N O P QR S T U V W X Y Z
 
Названия:
А БВ ГДЕЖЗИЙКЛМНОП Р СТУФХЦЧШЩЭЮЯ
A BC D E F G H I JKL M N O P Q R S T U V W XY Z
 

Опубликовано на портале: 29-11-2003
Karsten Kyed, Niels Kaergard, Henrik Zobbe
2002
The multifunctional character of agriculture is used as a main argument for agricultural support. This argument is theoretical analyzed in a model with decreasing marginal utility and it is shown that such a support must depend on the size of the agricultural sector. Consequently the argument is not valid for a common policy for very different countries as the EU-countries.
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Опубликовано на портале: 31-03-2005
Barbara Lampic, Irma Potočnik Slavič
2004
Slovenia is characterised by very specific conditions for agriculture (approx. 80 % of territory defined as LFA), extremely heterogeneous geographic features and therefore also by huge regional divergence – especially in rural areas (representing at least three-quarters of the state’s territory). Heterogeneity, mosaic structure and relatively good preserved environment and traditional patterns are general characteristics of Slovene rural areas and we consider the mentioned as development potential for the vast part of Slovenian rural areas. In the last decade, huge regional disperities have actually arisen. Although the agriculture has lost its importance in economy, the newly proposed Rural Development Programme (for time period 2004 – 2006) is based on agricultural and agri-environment measures and ignores the multifunctional character of rural areas.
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Опубликовано на портале: 29-11-2003
Jussi Lankoski, Markku Ollikainen
2002
We study the multifunctional character of agriculture in a model of endogenous input use and land allocation augmented by biodiversity, landscape amenity, and nutrient runoff. While biodiversity and landscape amenities represent the public good aspects of agriculture, nutrient runoff represents its negative externalities. We show that the private use of fertilizer input is higher and the size of buffer strips lower than the socially optimal solution requires. Also the socially optimal land allocation differs from the private solution due to the valuation of landscape diversity and runoff damages. The optimal policy is to use a differentiated fertilizer tax and a differentiated buffer strip subsidy and to determine their levels by the equality between the net value of their marginal product in food production and their effects on the marginal valuation of diversity and runoff damage in each parcel. We characterize empirically socially optimal multifunctional agriculture and the optimal design of the policy instruments by using Finnish data.
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Опубликовано на портале: 28-11-2003
Alfons Oude Lansink, Kyosti Pietola
2002
This paper applies a semi-parametric approach to estimating a generalised model of investments in energy installations. The model accounts for irreversibility and lumpiness of investments by linking a parametric specification of the unobservable dynamic shadow price to observed investment behaviour using a non-parametric specification of the adjustment cost function. The results suggest that marginal costs of investments in energy installations increase quickly at small investment levels, whereas the increase slows down at higher investment levels. Therefore, standard parametric adjustment cost models are likely biased such that they over-estimate small investments and under-estimate large investments.
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Опубликовано на портале: 30-11-2003
Ma Lucila A. Lapar, Garth Holloway, Simeon K. Ehui
2003
Identifying ways to increase market participation by smallholder producers requires identifying variables that influence market access. This is usually achieved using probit estimation. An important phenomenon affecting entry decision-making is the entry decision of a "similar" household, where similarity is measured in terms of "location". When neighborhood influences are significant, it is important to allow for them in discrete decision contexts, such as probit estimation. This paper, therefore, assesses the magnitude of neighborhood influences in smallholder decisions concerning market entry. The empirical model is based on a cross-section of (110) farms situated in northern Philippines, visited (twice) in the 2000-2001 production year (a panel of 220 observations). The vehicle for analysis is a Bayesian formulation of a standard probit model, but one that allows for spatial autoregression in the decision vector. Estimation requires a Metropolis- step addition to a basic Gibbs sampling algorithm and generates useful insights concerning quantities that are important for market-access policy.
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Опубликовано на портале: 31-03-2005
Lutz Laschewski, Bettina Matzdorf, Christian Schleyer
2004
Current research on the impact of agri-environmental schemes under the Rural Development Regulation (EC) 1257/99 (RDR) stresses the institutional, structural and cultural diversity, but also the wide range of natural conditions that shape the implementation processes. Furthermore, those agri-environmental policy instruments are closely linked to the development and institutionalisation of an European environmental policy in general and to a number of European directives, such as the ‘Habitat’ Directive, in particular. While taking the implementation of Article 16 of the RDR in the German federal state of Brandenburg as an illustrative case, we are aiming at developing a wider understanding of the implementation process and its regional impacts. In particular, we argue that it is necessary to understand the regional agrienvironmental discourse to which regional administrations refer to, the rationale of the administration itself and the mechanisms of decision making at the regional level. Regional administrations follow their own legitimate agendas and do not simply apply given measures, but modify and try to integrate them into wider regional strategies. In the case presented, we show that the regional administration’s foremost concern to link political goals with given budgetary constraints resulted in a reshuffling of funds between schemes funded by different sources. We also show that European regulations are enforcing administrative procedures that do influence the design of agri-environmental schemes in a way that raises doubts about their environmental effectiveness. Finally, we argue, that the presumably sharp distinction between statutory environmental rules versus voluntary agri-environmental schemes is blurred in practice. Instead, they appear to be complementary in nature.
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Опубликовано на портале: 31-12-2003
Laure Latruffe, Kelvin Balcombe, Katarzyna Zawalinska, Sophia Moissey Davidova
Durban, 2003
The technical and scale efficiency of Polish farms is analysed, using Data Envelopment Analysis. Efficiency differences are measured according to farm specialisation, in crop or livestock, at two points in time during transition, 1996 and 2000. The statistical variability of efficiency estimates is investigated. The efficiency results are reviewed in the light of confidence intervals provided by bootstrapping and of a summary measure introduced in this study ‘the coefficient of separation’. The inference analysis suggests that farms might be less efficient than revealed by the point estimates alone, and that they might not be clearly different from each other.
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Опубликовано на портале: 30-11-2003
Terhi Latvala
2002
The aim of this study is to evaluate both qualitatively and quantitatively the value of new information about and the information systems set for credence characteristics of beef. Economics of information is our theoretical framework. The quantitative approach focuses to measure the ex ante value of credence characteristics, and the method of contingent valuation is applied for this purpose. Results indicate that 59 % of Finnish consumers are willing to pay more to get information about safety and quality of beef products. Consumers are most concerned with diseases caused by food of animal origin. Genetically modified organisms (GMOs) are not considered as the most hazardous risk factor in food products. However, if the beef products contain GMOs used in animals, then consumers also start requiring additional information.
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Опубликовано на портале: 31-12-2003
Ludwig H. Lauwers, Guido Van Huylenbroeck
Durban, 2003
A new method for analysing environmental efficiency, based on the materials balance, is proposed. With this method, an environmental allocative efficiency measure can be defined analogously to the more commonly used economic allocative efficiency. Nutrient surplus in pig fattening, a typical balance indicator, is used to illustrate the concept in a two input - one output case. The materials balance based efficiency analysis is elaborated using data envelopment analysis (DEA). Results are compared with those of more common, merely input or output oriented DEA approaches. A main conclusion is that, ignoring the balance feature of environmental issues such as nutrient surplus might be a main reason why traditional integral analyses of economic and environmental efficiency yield contradictory conclusions.
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Опубликовано на портале: 28-11-2003
Marjorie Le Bars, Jean-Marie Attonaty, Suzanne Pinson
2002
Water sharing has become a serious problem in France. One of the objectives of 1992 and 2000 directives proposed by the European Union was to reduce both the frequency and the extent of water conflicts through the establishment of multilateral negotiations, where different public and private interests can be represented in a structured institutional environment. In France, many negotiations take place at local level between farmers, water suppliers, public services and environmentalists to allocate water resources between users. We suggest that Agent–Based Modelling (ABM) using a multi-agent approach could help negotiations between different players by showing the consequences of water allocation rules and taking in consideration the players’ respective attitudes and their ability to change their behaviour.
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Опубликовано на портале: 30-11-2003
Tristan Le Cotty, Tancrede Voituriez
2003
When public goods are joint outputs of agricultural production, there is a trade-off between agricultural and non-agricultural provision of the public good. The principle of minimal price distortion in the reform of agricultural policies has led to a theoretical recommendation that public goods, if under-provided at agricultural free market level, should be promoted through non agricultural policies instead of agricultural policies. We show that the economies of scope between the agricultural production and the joint public good play a key role in determining the optimal way of providing this latter. If the policy designed is a non- agricultural policy, the production cost of the public good is higher than with an agricultural policy. If the policy designed is an agricultural policy, the production cost is lower but generates market effects. Under the assumption of strictly positive economies of scope, we show that the optimal policy is a mix of agricultural and non-agricultural policy. We confirm this result in the two-country case, demonstrating the optimal level of agricultural support for public good provision is strictly positive and lower than in the case of one country.
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Опубликовано на портале: 30-11-2003
William Liefert, Bryan Lohmar, Евгения Викторовна Серова
2003
This paper examines why transition from planned to market economies in the countries of the former Soviet bloc has changed their mix and volumes of food consumption. During transition, consumption of high value products, such as meat and dairy products, has plummeted, while consumption of staple foods such as bread and potatoes has remained steady, or even increased. The paper shows that in the pre-reform planned economy, planners ‘desired’ the production and national consumption of high value (and cost) foodstuffs more than consumers. When market reform resulted in consumer prices adjusting to reflect the full cost of production, consumer demand switched from high cost foods to other goods and services. The demand- driven nature of food restructuring in these countries has implications for food security, reinforcing the argument that any food security problems are not mainly the result of inadequate aggregate supplies of agricultural products.
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Опубликовано на портале: 30-11-2003
Gudbrand Lien
2002
Stochastic budgeting is used to simulate the business and financial risk and the performance over a six-year planning horizon on a Norwegian dairy farm. A major difficulty with stochastic whole-farm budgeting lies in identifying and measuring dependency relationships between stochastic variables. Some methods to account for these stochastic dependencies are illustrated. The financial feasibility of different investment and management strategies is evaluated. In contrast with earlier studies with stochastic farm budgeting, the option aspect is included in the analysis.
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Опубликовано на портале: 29-11-2003
Kim Martin Lind
2002
This working paper examines the food security policy, where food security means ensuring an adequate supply of food for hungry people. In particular, the recommendations of FAO are being used as a measuring rod against which food security policies are assessed. By means of FAO’s database a statistical analysis of all Sub-Saharan Africa countries with respect to measuring the incidence and severity of critical food shortages are carried out. Stock policies seem to have been the answer when issues of ensuring adequate supplies have surfaced. In the paper, an estimate of the costs of keeping stocks is provided, and the costs are quite staggering. Based on the statistical analysis an estimate of the number and volume of acute food shortages per year in Sub-Saharan Africa is achieved. Upon this number a much cheaper alternative to keeping stocks for security purposes is proposed. It is proposed that a financial fund is set up with the sole purpose of purchasing grains on the open market when acute food shortages occur. In order for the fund to achieve its goals it must be completely independent of politics, and the financing and replenishing of the fund must be automatic. The advantages are that a lot of costs are saved which could be used to improve food security policies in developing countries. Furthermore, the supply of food aid is done via a global fund, and is not the result of political considerations in donor (big exporting) countries. The reservations voiced by some developing countries that further liberalisations in agricultural policies in the WTO round of negotiations could jeopardise food security is answered by this fund. Liberalisations of agricultural policies may lead to lower food stocks in the big exporting countries, but the proposed financial fund does not rely on such stocks. It is found that the purchases the fund would have to conduct only comprise a small fraction of the world trade in cereals.
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Опубликовано на портале: 29-11-2003
Markus Lips, Peter Rieder
2002
This paper discusses an approach to implement output quotas in the GTAP model which permits an endogenous adjustment of both the supplied quantity and the quota rent. Since the quota rent is interpreted as additional earnings of the factors used no change of the worldwide GTAP data base is required. Several modifications of the GTAP model and two exogenous coefficients are necessary. Considering uncertain values of one of the coefficients, systematic sensitivity analysis is applied. The abolishment of the raw milk quota in the European Union would lead to a remarkable decrease in raw milk prices in most member countries. The raw milk production increases in Denmark, Ireland, Luxembourg and the Netherlands while it declines in Greece and Portugal. In the other member countries the raw milk production changes slightly.
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