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Всего публикаций в данном разделе: 35

Авторы:
А Б В Г Д Е ЖЗ И ЙК Л М Н О П Р С Т У Ф Х ЦЧ Ш 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:
все А БВ Г Д ЕЖЗ И ЙК ЛМ НО П Р С Т У ФХЦ Ч ШЩЭ ЮЯ
1 A B C D E F G H I JKL M N O PQ R S T U V W XY Z
 

Опубликовано на портале: 29-11-2003
Ernst-August Nuppenau
2002
The paper explores the question of diversity in agricultural practice as related to bio-diversity and landscape appearance. It starts with the observation that, in the past, diverse natural conditions have considerably impacted on adapted modes of agricultural production, more than today, and that previously performed farm practices were strongly affiliated with specific natural conditions. These practices positively contributed to a modified, diverse and man-made environment which is frequently considered a beautiful landscape. This has changed dramatically. Particularly, where the European countryside is regarded a natural heritage, today, the public seems to be worried about modern farm practices. After the adoption of modern techniques, farmers prefer to apply unified production technologies and tend to set-up uniform farm structures and product mixes as well as land cultivation practices based on purchased inputs. Farm operations equalise natural conditions and contribute to uniform land rents. However, a rising public concern for the preservation of bio-diversity is asking for change and new measures. Additional to regulations on farm practices governments seek to compensate farmers for nature preservation and production of bio-diversity. Presuming that high biodiversity is dependent on diversity in agricultural practice and landscape appearance due to preserved natural conditions, the paper develops a model that links payments to diversity in farm practice and natural conditions. The applied model is landscape-oriented and classifies farm behaviour according to agronomic conditions. A reference system for a unified technology is presented and implications for payments are discussed using a behavioural approach. This behavioural approach focuses on regional dynamics in natural condition as major determinants for bio-diversity and payments as determinants for farm practices. Payments are directed to re-establish diversity in farm practices, counteract current technology dominance, and assure a new exposure to nature, though only partly. Diversity becomes prevalent; notably according to an economic calculus of costs and benefits from taxpayers' point of view.
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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: 24-12-2003
Rainer Thiele
Durban, 2003
This paper deals with the question of how responsive farmers in Sub-Saharan Africa (SSA) are to changes in incentives. Employing Johansen's multivariate cointegration approach and covering the period 1965.99, it investigates for ten selected SSA countries the long-run effect of pricing policies, macroeconomic distortions, and certain non-price factors on agricultural production. It turns out that - in those cases where cointegration relationships are found - estimated supply elasticities tend to lie between 0.20 and 0.50. Among the non-price factors, drought episodes have significantly impaired agricultural growth in six out of ten sample countries. Technical progress as measured by a simple deterministic time trend has only had a minor impact on output.
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Опубликовано на портале: 29-11-2003
Daniel Hassan, Michel Simioni
2002
The existence and the kind of asymmetry that characterize the relationships between shipping-point and retail prices are investigated for two major French fresh vegetables: tomatoes and chicory. Weekly data allow considering these relationships at very detailed levels such as region or supermarket chain. Moreover, the methodology proposes an implicit treatment of asymmetries in price transmission by using recently developed threshold cointegration methods. Our results do not give evidence to the widespread assertion that shipping-point price increases are completely and rapidly passed by middlemen on to consumers while there is a slower and less complete transmission of shipping-point price declines. As already emphasized in the literature, these results may be linked to the perishable nature of the two considered fresh vegetables.
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Опубликовано на портале: 30-11-2003
Atanu Ghoshray, Tim Lloyd
2003
This paper brings time series techniques to bear on the relationships between the prices of the principal types of wheat traded internationally. In all, the relationships between eleven wheat prices (categorised by wheat quality, harvest date and port of despatch) are scrutinised to uncover the structure of the wheat market implicit in the behaviour its prices reveal. The statistical evidence supports the notion of a highly integrated market that is segmented according to wheat strength . the principal determinant of end-use. Three segments are identified: a market for "strong" (bread-making) wheat, another for "weak" (confectionary products- making) wheat and a third for medium strength wheat suitable for unleavened breads and noodles. Whilst informative, market integration - detected by cointegration among prices . is not altogether surprising, yet the presence of cointegration implies a causal structure, which is of more cogent interest. Among a number of complementary techniques, linkages are uncovered using an innovative concept of irreducible cointegration vectors (Davidson 1998, Barassi et al 2001) which provides new evidence on price linkages. Statistical evidence is robust and not test-dependent. Specifically, we find a dominant price leader in each sub-market. In terms of its pricing, the EU is found to play a passive role in the world market, confirming a widely held view.
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Опубликовано на портале: 29-11-2003
Monia Ben-Kaabia, Jose Maria Gil, L. Boshnjaku
2002
The analysis of asymmetries in the price transmission mechanism at different levels of the marketing chain provides some interesting information about the degree of competition in vertical related markets. The objective of this paper is to investigate the non-linear adjustments of prices along the lamb sector in Spain. The methodology used is based on the multivariate approach to specify and estimate a Threshold Autoregressive Model. Price relationships at farm, wholesale and retail levels are considered. Results indicate that in the long-run price transmission is perfect and any supply or demand shocks are fully transmitted to all prices in the system. In the shortrun, analyses suggest that the high degree of horizontal concentration among retailers allow them to have market power. Responses to any shock generate an increase of the retail price spread which is more evident when prices show an upward trend.
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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: 31-12-2003
Cynthia Donovan, Linda Bailey, Edson Mpyisi, Michael Weber
Durban, 2003
In Rwanda for the past decade, rural households have lived with civil unrest and genocide, changing land laws, large population flows both into and out of the country, and climatic threats with droughts and floods. The illness and untimely death of prime age adults from a number of health problems (increasingly HIV/AIDS) adds to the stress of these households and has lasting effects on the ability of households to survive. In this research, the authors use household and member level survey data to increase understanding about what is happening in households with such shocks and how they may be different from other Rwandan rural households.

This research finds that households affected by adult illness and death strive to maintain their agricultural production, and work to avoid selling assets, yet some households appear to be in a downward spiral, losing assets and income earning potential. They rely heavily on social networks for labor and skills, but clearly these networks will be stretched beyond their means in any continuing epidemics. Female-headed households in particular struggle to find labor with neighbors or work more themselves. If special programs are developed for the affected families, focusing on increasing land and labor productivity fits into their own strategies. Since households with prime age death and disease appear to be similar to other Rwandan households in the poorest two quintiles, such programs would be beneficial to rural households in general, and possibly strengthen social networks through generalized agricultural and income growth.
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Опубликовано на портале: 31-03-2005
Luka Juvancic, Emil Erjavec, Morten Kvistgaard, Jens P. Olsson
2004
The paper reports on the experiences gained from conducting the mid-term evaluation of SAPARD Program in Slovenia. The methodological approach lies in comparative analysis of two approaches: empirical approach, based on the application of Input-Output model and conventional approach based on application of evaluation techniques as proposed by the Guidelines prescribed by the European Commission. Limited scale of implementation has raised problems in economy-wide assessment of the impact and success of the Program. In some cases, quantitative relationships were also hard to assess due to the impact of external influences. Important limitations were found also in the case of conventional evaluation approach. The analysed case encountered some data-related problems (deficient monitoring data, almost exclusive dependence on primary data). There is also a more systemic problem of a limited contextual scope of this evaluation approach, which fails to provide sufficient information in the policy formation phase. Apart from comparison of alternative evaluation approaches, the paper also attempts to provide some wider implications for adoption of 'evaluation paradigm' in rural development policy in countries without a previous experience in this field.
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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: 05-01-2003
Andrew B. Williams, Xudong Zhang
2003
This paper examines the underlying nature of production development, its relationship to industry & markets within China, & its implications for Western collaboration. A substantive literature review is supported by a case illustration, selected from a random sample of low technology manufacturing companies.
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Опубликовано на портале: 30-11-2003
Bernhard Brummer, Thomas Glauben, Wencong C. Lu
2003
The study is devoted to the measurement of productivity and efficiency change in Chinese farming sector over the reform process in the 1980s and 1990s. Within an output distance function framework, an index of total factor productivity is decomposed into technical and allocative efficiency, technical change, and scale effects. We estimate a parametric output distance function using individual farm household data from the province Zhejiang over the period 1986-2000. Results indicate that during the more market-oriented reform period in the mid 1980s productivity and technical efficiency increased while allocative efficiency remain constant. However, productivity growth and technical efficiency slow in the mid 1990s when market orientation of the reforms was reduced and self-sufficiency as a major goal reappeared on the political agenda.
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Опубликовано на портале: 24-12-2003
Lire Ersado, Gregory Amacher, Jeffrey Alwang
Durban, 2003
The adoption of more efficient farming practices and technologies that enhance agricultural productivity and improve environmental sustainability is instrumental for achieving economic growth, food security and poverty alleviation in sub-Saharan Africa. Our research examines the interaction between public investments, community health, and adoption of productivity and land enhancing technologies by households in the northern Ethiopian state of Tigray. Agricultural technology adoption decisions are modeled as a sequential process where the timing of choices can matter. We find that time spent sick and opportunity costs of caring for sick family members are significant factors in adoption. Sickness, through its impact on household income and labor allocation decisions for healthcare and other activities, significantly reduces the likelihood of technology adoption. Our findings suggest that agencies working to improve agricultural productivity and land resource conservation should consider not only the financial status of potential adopters, but also their related health situation.
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Опубликовано на портале: 31-12-2003
Sanzidur Rahman
Zaragoza, 2003
Production inefficiency is usually analysed by its two components – technical efficiency and allocative efficiency. In this study we provide a direct measure of production efficiency of the Bangladeshi rice farmers using a stochastic profit frontier and inefficiency effects model. The data, which is for 1996, includes seven conventional inputs and several other background factors affecting production of modern or high yielding varieties (HYVs) of rice spread across 21 villages in three agro-ecological regions of Bangladesh.

The results show that there are high levels of inefficiency in modern rice cultivation. The mean level of profit efficiency is 77% suggesting that an estimated 23% of the profit is lost due to a combination of both technical and allocative inefficiency in modern rice production. The efficiency differences are explained largely by infrastructure, soil fertility, experience, extension services, tenancy and share of non-agricultural income.
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Опубликовано на портале: 29-03-2005
Franz Sinabell, Герхард Штрейхер
2004
Community legislation requires that the programme for rural development is evaluated. A detailed set of indicators was developed by the commission and member states are required to use them to measure program success. To make results comparable requires that the methodology by which indicators are measured is well defined. However, this is not the case in this evaluation task. We take a small set of indicators and use two different approaches using the same sample and show that the results are deviating. We conclude that the success of this programme can only be compared across measures/regions when both, indicators and method are the same.
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