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Всего публикаций в данном разделе: 49

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 HI J K L M N O P Q R S T U V W X Y Z
 
Названия:
А БВ Г Д ЕЖЗ ИЙК 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: 29-11-2003
John Helming, Jack Peerlings
2002
A modelling system is presented and used to analyse the impact of milk quota abolishment on Dutch agriculture and economy. The modelling system consists of a regionalised, agri-environmental, partial equilibrium, mathematical programming model of agriculture supply in the Netherlands integrated into a mixed input-output model. It was found that abolition of the milk quota system has large impacts on milk production and livestock numbers and composition. The latter is explained by the strict mineral and manure policies in the Netherlands; an increase in the numbers of dairy cows leaves less room for other livestock. It is also found that, although the total effect on gross value added in the Dutch economy is limited, the effects for individual industries can be large.
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Опубликовано на портале: 30-11-2003
Roberto Henke, Roberta Sardone
2002
The paper focuses on the implementation of direct aids modulation, as provided for by Regulation 1259/99. After a critical review of the most relevant questions arisen around the effectiveness and the viability of modulation, the paper presents results about its possible application in Italy. In the first part of the paper a special attention is given to the actual distribution of direct aids in Italy, to the number of farms involved and the amount of revenues realised. In the second part four different hypotheses of modulation are tested. In order to evaluate the effectiveness of modulation revenues under the four different hypotheses are compared with the financial resources allotted in Italy to the regional Rural Development Plans (RDPs). While results of modulation are, generally speaking, quite poor in terms of re-distribution of direct aids, there is a more relevant effect in terms of additional resources destined to the RDPs. However, resources are to be destined to measures that receive the highest share of resources within the RDPs. On the contrary, other measures, more genuinely addressing Rural Development and territorial issues within the RDPs, receive a much smaller amount of resources and cannot be funded through modulation. In other words, if the main objective of the modulation is that of shifting resources from the first to the second pillar of the CAP, this is only partially realised, given the mandatory destination of financial resources on measures that are substantially financed and that do not fully address the economic diversification and the development of rural areas.
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Опубликовано на портале: 29-11-2003
Thia Hennessy
2002
This paper examines intergenerational succession on Irish dairy farms. The factors that influence the decision to enter dairying farming are examined using a binary choice logit model. Reasons that are frequently published in the popular farming press as being an obstacle to intergenerational succession are analysed and the significance of their effect is quantified. Results show that the level of education of the heir is the most significant factor in the succession decision. Heir’s with third level education are 30% less likely to enter dairy farming than their second level only educated counterparts. The sizes of milk quota and income that are associated with high probabilities of succession are identified.
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Опубликовано на портале: 31-12-2003
Roland Herrmann, Anke Moser
Zaragoza, 2003
In many industrialized countries, the grocery-retailing sector exhibits a strong and increasing market concentration. Hence, it is important to understand retail pricing for many questions related to market power in the marketing chain and to agricultural and food policies. We analyze intertemporal pricing of grocery retailers in Germany with a large set of scanner data for processed foods. In theory, food prices could be rather variable, e.g. due to fluctuating commodity prices in a competitive world, or rather rigid, e.g. due to price adjustment costs. We elaborate that retail sales are crucial and raise food price variability at the points of sale. Despite this, prices are rather rigid and often do not change for many weeks. Moreover, pricing strategies for identical brands vary strongly across retailers. Retailers seem to have differential pricing strategies and, thus, market power. This casts substantial doubt on the assumption of a competitive price transmission in the marketing channel underlying most analyses in agricultural economics.
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Опубликовано на портале: 29-11-2003
Senhui He, Wojciech J. Florkowski, Jeffery L. Jordan
2002
This paper addresses the issue of rationality of responses in contingent valuation. We found a significant portion of respondents stated a positive willingness-to-pay for a project they perceived to be worthless. The irrational responses had a significant impact on the mean stated willingness-to-pay and the effect can not be removed by simply excluding the those observations from estimation. The dichotomous-choice elicitation format helps to mitigate the effect of the irrational responses, but can not completely solve the problem.
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Опубликовано на портале: 04-01-2004
Jill Hobbs, William A. Kerr, James Gaisford
Oxford: Oxford University Press, 1997, 416 с.
This book offers a coherent perspective on the transition to a market-based agri-food system in the Central and Eastern European Countries and the New Independent States of the former Soviet Union. It provides a formal analysis of the entire food chain from farm inputs to final consumers, including imports and exports, and covers all major components of the system, from food security, multinationals, and commercial law, to theoretical approaches to prices, transaction costs, and bilateral monopolies.

В книге представлен анализ перехода к основанной на рыночных условиях хозяйствования агропродовольственной системе в странах центральной и восточной Европы, СНГ. Авторами рассматривается вся продовольственная цепочка от фермера до потребителя, структура, задействованные экономические агенты, импорт и экспорт, проблемы продовольственной безопасности, роль транснациональных корпораций, процессы ценообразования, трансакционные издержки, институты.
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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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Опубликовано на портале: 30-11-2003
Jikun Huang, Ruifa Hu, Hans van Meijl, Frank van Tongeren
2003
China has made a major investment in biotechnology research. Genetically modified (GM) cotton is widely adopted and the list of GM technologies in trials is impressive. At the same time there is an active debate on when China should commercialize its GM food crops. The overall goal of this paper is to provide an economy-wide assessment of these issues under various scenarios. Based on a unique data from empirical micro-level study and field trial in China and a modified GTAP model, our results indicate that the development of biotechnology has an important impact on China.s production, trade and welfare. Welfare gains far outweigh the public biotechnology research expenditures. Most gains occur inside China. Policy makers should put less weight on the international dimension in making their decisions on biotechnology development.
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Опубликовано на портале: 31-12-2003
Rui Huang, Lilyan E. Fulginiti, E. Wesley Peterson
Durban, 2003
A three period overlapping generations model is developed to investigate the impact of shorter life expectancy due to disease, on human capital investment decisions and income growth. This research is particularly relevant to Sub-Saharan Africa given the dramatic reduction in life expectancy due to HIV/AIDS and the potential lasting effects on growth. Our results indicate that as life expectancy shortens so does schooling inducing a lower growth rate of income. These relationships are even more pronounced for the African continent than for the rest of the world.
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Опубликовано на портале: 04-01-2004
Wallace E. Huffman
Berlin, 2000
The objective of this paper is to provide a review of the broad effects of education in agriculture and examine some of the prospects and potential for the future. Worldwide about one-half of the labor force continues to be employed in agriculture. In the low income countries which account for about 55 percent of the world’s population, the share of the labor force that is in agriculture exceeds 65 percent, but in developed countries which account for about 15 percent of the world’s population, the share of the labor force in agriculture is only 5 percent (World Bank 2000). In what are now the developed countries, the long-term increase in agricultural productivity associated with advances in knowledge has been a major factor in the long-term transformation from an agrarian to an urban-based, service-oriented society (Johnson 2000).

The essay will be organized as follows: a conceptual framework, a summary of empirical evidence, prospects for rapid changes, and conclusions.
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Опубликовано на портале: 30-11-2003
Xavier Irz, David Hadley
2003
To improve the welfare of the rural poor and keep them in the countryside, the government has been spending 40% of the value of agricultural GDP on agricultural support services. But can investment make smallholder agriculture prosperous in such adverse conditions? This paper derives an answer by applying a two-output six-input stochastic translog distance function, with inefficiency effects and biased technical change to panel data for the 18 districts and the commercial sector, from 1979 to 1996. This model demonstrates that herds are the most important input, followed by draft power, land and seeds. Multilateral indices for technical change, technical efficiency and total factor productivity (TFP) show that the technology level of the commercial sector is more than six times that of traditional agriculture and that the gap has been increasing, due to technological regression in traditional agriculture and modest progress in the commercial sector. Since the levels of efficiency are similar, the same pattern is repeated by the TFP indices. This result highlights the policy dilemma of the trade-off between efficiency and equity objectives.
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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: 31-12-2003
Leigh J. Maynard, Jason Hartell, A. Lee Meyer, Jianqiang Hao
Durban, 2003
An experimental store was created to evaluate initial demand for locally-produced and guaranteed tender steak products as a more realistic alternative to contingent valuation (CV) and dichotomous-choice experimental methods. Strengths of the approach are incentive compatibility, a realistic consumption set, and a familiar choice environment. Consumers selected among USDA Choice, premium quality, lean, guaranteed tender, and locally-produced strip steaks. Double-hurdle count data model indicated initial willingness-topay for locally-produced steak comparable to prior CV results, but demand was highly elastic. Demand for premium quality steak crowded out demand for the guaranteed tender product, contrasting with prior dichotomous-choice experimental results.
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Опубликовано на портале: 29-11-2003
Agata Pieniadz, Heinrich Hockmann
2002
This study deals with horizontal product differentiation in the Polish pig meat market. Hypothesis among firms behaviour are derived from an illustrative model and tested in an empirical analysis using data from 1991-1998. The empirical analysis suggest that product differentiation is a relevant phenomenon in the polish pig meat markets. In addition we found that costs and competitions are important factors influencing price variation. However, further influences like price discrimination and vertical product differentiation are also important determinants for product price variations.
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Опубликовано на портале: 30-11-2003
Bekele Shiferaw, Stein Holden
2003
The paper examines the interlinkages between population pressure and poverty, possible impacts on household welfare and land management, and the consequent pathways of development in a low potential rural economy. A dynamic non-separable bio-economic model, calibrated using data from the Ethiopian highlands, is used to trace key relationships between population pressure, poverty and soil fertility management in smallholder agriculture characterized by high levels of soil degradation. Farm households maximize their discounted utility over the planning horizon. Land, labor and credit markets are imperfect. Hence, production, consumption and investment decisions are jointly determined in each period. The level of soil degradation is endogenous and has feedback effects on the stock and quality of the resource base. This may in turn influence land management choices. Under high population pressure, land becomes dearer relative to labor. This is likely to induce conservation investments, especially when conservation technologies do not take land out of production. When markets are imperfect, poverty in vital assets (e.g., oxen and labor) limits the ability or the willingness to invest in conservation and may lead to a less sustainable pathway. Boserup-type responses are more likely when (privately) profitable technologies exist and market imperfections do not limit farm-households' investment options.
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