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Всего публикаций в данном разделе: 535

Авторы:
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 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: 31-12-2003
E.E. Imad, Rifaat Ahmed Abdel Karim
Durban, 2003
This paper assesses and quantifies the consequences of world trade liberalization in agriculture on trade and food security of Sudan. Sudan, with the agricultural sector as the main sector of economy, is characterized by its small open economy, and is classified as one of the least developed countries. Thus, Sudan becomes more vulnerable to any changes in international agricultural markets. The liberalization of international agricultural trade has a great influence on Sudan's food security and on the whole economy. An extended form of a multi-market model for Sudan is developed and used for the analysis. The model embodies important characteristics of agriculture in Sudan like substitution effects and stages of production.

As agriculture is the main sector of Sudan's economy, the model is extended to explicitly integrate some of the key important macroeconomic linkages, and to establish certain feedback effects between agriculture and the macro-economy. The model simulations reveal that a higher world market price would overall lead to measurable gains in food security and agricultural trade of the country. However, when the effect of a higher cost of production is considered, the positive results are reversed. Furthermore, the results of the model simulations show that the domestic policy environment matters very much with respect to the potential impact of world trade liberalization of agriculture. The paper concludes that Sudan should reorient its national policies towards export promotion in order to benefit from the new emerging trading opportunities in world markets. However, to capture a greater benefit from the new environment in the international markets, Sudan should consider and manage carefully all factors, domestically or internationally - e.g. quality standard, loss of preference, dumping effects - that hinder its economic and trade growth.
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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
T. S. Jayne, Takashi Yamano, James Nyoro
2003
This paper addresses the potential for interlinked credit/input/output marketing arrangements for particular cash crops to promote food crop intensification. Using panel survey data from Kenya, we estimate a household fixed-effects model of fertilizer use per hectare of food crops, using an instrumental variables approach for addressing the endogeneity of participation in interlinked credit arrangements. Results indicate that households engaging in interlinked marketing programs for selected cash crops applied considerably greater fertilizer on other crops (primarily cereals) not directly purchased by the cash crop trading firm. These findings suggest that, in addition to the direct stimulus that interlinked cash crop marketing arrangements can have on small farmer incomes, these institutional arrangements may provide spillover benefits for the productivity of the farmers. other activities such as food cropping.
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Опубликовано на портале: 31-12-2003
D.Gale Johnson
USA: Macmillan Press, 1991, 304 с.
Книга «Мировое сельское хозяйство в беспорядке» - об основных тенденциях развития мирового сельского хозяйства. Автором показывается постепенное развитие сельского хозяйства с ростом производительности, фондовооруженности, снижением занятости и доли сектора в экономике в целом. Также, глубокому анализу подвергаются аграрные политики развитых стран и их отрицательное воздействие на развивающиеся страны.

Опубликовано на портале: 30-11-2003
Nancy L. Johnson, Ruth Suarez, Mark Lundy
2003
This paper characterizes and measures the contribution of social capital to the performance of 50 agroenterprises in Colombia. Using qualitative analysis we document the functions that social capital performs within firms. To estimate social capital’s contribution to firm structure and performance, quantitative indicators of firm-level use of social capital are developed based on the number and strength of external relationships that firms maintain. Econometric analysis finds that firm-level returns to relationships are positive and higher than to physical or human capital. The results suggests that while firms can increase their economic performance by investing in social capital, ameliorating the effects of the market failures that lead to use of social relations for business purposes could also improve both equity and efficiency.
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Опубликовано на портале: 03-01-2004
Ред.: Stanley R. Johnson, Jati K. Sengupta, Erik Thorbecke
USA: Blackwell Publishing Company, 1992, 384 с.
Книга является сборником научных работ, опубликованных в 1950-1960х годах, одного из известных экономистов - Карла Фокса. Основные темы исследования, получившие отражение в данном сборнике – анализ спроса, пространственные модели равновесия, взаимоотношение сельского хозяйства с неаграрной экономикой, эконометрическое моделирование в экономике и экономической политики в США. Под редакцией С.Джонсона, Ж.Сенгупта, Э.Торбеке.
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Опубликовано на портале: 29-11-2003
Roel Jongeneel
2002
This paper analyses the impact of the dairy quota scheme on the size distribution of the Dutch dairy industry. A non-stationary Markov model approach is used, where the transition probabilities are explained by a set of exogenous (policy) variables. Using an information theoretical approach, a model is estimated for The Netherlands and used to simulate the impacts of alternative EU dairy policies. Several results emerged:
a) There is an autonomous over time decline in farm numbers (implying increase in farm size).
b) The dairy quota regime positively influences 'small' and 'medium' farm sizes;
c) Abolition of the dairy quota will negatively affect the total number of active farms and favours further increase of farm scale.
d) Targeting support according to needs increases the number of active dairy farms as compared with the status quo.
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Опубликовано на портале: 29-11-2003
Johannes Jutting
2002
Community based health insurance schemes are becoming increasingly recognized as an instrument which help farmers in rural areas of low income countries to better manage health. Health risks present a permanent threat to the income earning capacity of poor people. Beside direct economic cost for treatment and lost working time, indirect cost such as a reduction in labor supply materialize which increases the vulnerability of the household. It is often hypothesized that community based health insurance improve social protection, but quantitative analysis is largely missing. Against this background, this paper analyzes if members in a mutual health insurance scheme have a better access to health care than non-members taking “les mutuelles de santés” (mutual health organization) in rural Senegal as an example. Limited dependent and log linear regressions are used to capture the impact of health insurance on the probability of visiting a health care provider and the out-of-pocket expenditure at the point of use . The results of the analysis show that while community based health insurance schemes reach otherwise excluded people, the poorest of the poor in the communities are not covered. Regarding the impact on the access to health care, members have a higher probability of using hospitalization services compared to non-members and pay substantially less when they need care. Given the results from this study, community financing schemes have the potential to improve the risk management capacity of rural households.
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Опубликовано на портале: 25-12-2003
Luka Juvancic, Emil Erjavec
Durban, 2003
The paper attempts to quantify determinants influencing dynamics of employment decisions on agricultural households in Slovenia and to test specific aspects of labour reallocation during transition period by application of agricultural household model. Through the use of 1991 . 2000 panel data for 22,055 farm households, quantitative analysis of intertemporal employment decisions of farm holders is carried out by the use of probit techniques. Determinants tested refer to personal characteristics of reference persons (gender, age, education level, opportunity off-farm income), household characteristics (size, structure), characteristics of the agricultural holding (economic size, labour input, labour intensity) and local labour market conditions. The model results generally confirm the existing empirical evidence on asymmetrical and irreversible participation of holders at the labour market. Despite intensive restructuring of agriculture and profound changes in non-farm labour market in the analysed period, labour supply of farm holders remains rigid. Mobility of labour supply is lower than expected, which can be attributed to the importance of structural problems constraining intersectoral mobility. A marked tendency towards upkeeping of the same employment status is more distincted in the case of holders employed on the farm. A low level of labour supply mobility worsens efficiency of labour allocation on agricultural holdings in Slovenia. Elements of this problem emerge on both, supply (e.g. low level of educational and professional attainment of reference persons) and demand side of labour market (e.g. unfavourable local labour market conditions).
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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: 30-11-2003
Martin Kapfer, Jochen Kantelhardt, Elizabeth Osinski
2003
In comparison to large-scale natural landscapes separated from extensively used agricultural production landscapes in North America or Australia, German and Central Europe landscapes are all characterised by predominantly agricultural landscapes with few “rests of nature”. Due to the high population density, different types of land users demand different functions of the landscape. In addition to food production, there is a high demand for protection of cultural heritage by caring for e.g. hedgerows in the landscape. The aim of this study was to estimate the costs arising from the maintenance of landscape elements in landscapes situated on land with different site conditions. As an example, the distribution of hedgerows on sites of varying agricultural quality were considered. The calculations were undertaken on the entire area of Baden- Wuerttemberg in Southwest Germany, comprising various administrative districts. The association between ecological and economic information was analysed statistically and with the help of GIS. The results indicate that the costs for landscape element protection differ within the state of Baden-Wuerttemberg and that there is a lot of economic pressure against hedgerow biotopes existing in certain districts. Measures for protection such as agri-environmental programmes should consider the different landscape-dependent costs.
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Опубликовано на портале: 29-11-2003
Giannis Karagiannis, Peter Midmore, Vangelis Tzouvelekas
2002
The objective of this paper is to develop a tractable approach for recovering and quantifying all sources of TFP changes (namely, technical change, changes in technical and allocative efficiency, and scale economies) from the econometric estimation of an input distance function which also fully describes the production technology. The proposed theoretical framework relies on Bauer’s TFP decomposition framework and the duality between input distance and cost functions. Hence, instead of using a system approach to estimate a cost frontier, all necessary information for decomposing TFP changes are recovered from its dual counterpart.
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Опубликовано на портале: 04-01-2004
Giannis Karagiannis, Alexander Sarris
Zaragoza, 2002
In this paper we apply the technical inefficiency effect model to a set of eight different crop products (i.e., wheat, mixed arable crops, tobacco, cotton, olive oil, fruits, vegetables, and greenhouse horticulture) in Greek agriculture.

For each product, a panel data set covering the period 1991- 1995 is used and separate econometric results are obtained for each product. A particular set of socioeconomic and demographic variables is used to explain technical efficiency differentials among Greek farmers, including the direct subsidies given to each farmer, and the concordance of these efficiency determinants is discussed across the eight different crop products considered.
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Опубликовано на портале: 28-11-2003
Laszlo Karpati, Zsolt Csapo, Laszlo Kozar
2002
The change of the political Hungarian regime in 1990 affected deeply the economy of the country. This change made effects in each national branch, thus in the agriculture, as well. A lot of new companies dealing with agricultural production and trading has also been established in these years. Since the early ‘90s a lot of EU support programmes were available targeting these enterprises and providing them to strengthen their competitiveness. One of these programmes was the PHARE IPP Project for the subsidisation of the agricultural investments (between 1996-1998). The University of Debrecen was involved in the implementation, monitoring and assessment process of this project. Based on the results and suggestions of the university, new supporting elements have been built into the subsidisation programme of the Ministry of Agriculture and Rural Development in the recent years, further enhancing the position of Hungarian farms before joining to the EU.
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Опубликовано на портале: 29-11-2003
Stelios D. Katranidis
2002
This paper examines the welfare effects of the Common Agricultural Policy (CAP) cotton, maize and sugar beet regimes practiced in Greece after its 1981 entry into the European Union. These markets are considered as horizontally related because there are usually the same farmers that use the same areas to produce various combinations of the relevant products. We use bootstrap techniques to conduct a statistical analysis of the estimated welfare measurements. The welfare analysis indicates that the income amounts transferred to farmers rose significantly in the period between 1981 and 1992. The 1992 CAP reform slowed down this trend, and transfers have remained at an almost statistically constant level since 1992.
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