на главную поиск contacts
Мы не берем все книги по признаку формального соответствия темам. Отбираем лучшее по качеству и релевантности. (подробнее...)
Всего публикаций в данном разделе: 7



Опубликовано на портале: 12-12-2003
Alastair Bailey, Xavier Irz, Kelvin Balcombe
Durban, 2003
The measurement of the impact of technical change has received significant attention within the economics literature. One popular method of quantifying the impact of technical change is the use of growth accounting index numbers. However, in a recent article Nelson and Pack (1999) criticise the use of such index numbers in situations where technical change is likely to be biased in favour of one or other inputs. In particular they criticise the common approach of applying observed cost shares, as proxies for partial output elasticities, to weight the change in quantities which they claim is only valid under Hicks neutrality. Recent advances in the measurement of product and factor biases of technical change developed by Balcombe et al (2000) provide a relatively straight-forward means of correcting product and factor shares in the face of biased technical progress.

This paper demonstrates the correction of both revenue and cost shares used in the construction of a TFP index for UK agriculture over the period 1953 to 2000 using both revenue and cost function share equations appended with stochastic latent variables to capture the bias effect. Technical progress is shown to be biased between both individual input and output groups. Output and input quantity aggregates are then constructed using both observed and corrected share weights and the resulting TFPs are compared. There does appear to be some significant bias in TFP if the effect of biased technical progress is not taken into account when constructing the weights.
ресурс содержит прикрепленный файл

Опубликовано на портале: 30-11-2003
Jay Fabiosa, John C. Beghin, Stephane de Cara, Cheng Fang, Murat Isik, Holger Matthey
Using a partial equilibrium model of world agriculture, we investigate the multilateral removal of all border taxes and farm programs and their distortion of world agricultural markets. These distortions have significant terms-of-trade effects. World trade is also significantly impacted by both types of distortions. Trade expansion is substantial for most commodities, especially dairy, meats, and vegetable oils. Net agricultural and food exporters (Brazil, Australia, and Argentina) emerge with expanded exports; whereas net importing countries with limited distortions before liberalization are penalized by higher world markets prices and reduced imports. The US gains significant export shares in livestock products and imports more dairy products. Without protection and domestic subsidies, the EU loses many of its livestock and dairy export markets.
ресурс содержит прикрепленный файл

Опубликовано на портале: 31-03-2005
Sevtap Guler Gumus, Emin Isikli
This paper is aiming at an analysis of Rural Development Programs (RDP) in Turkey with special reference to EU Rural Development Policies, Programs and implementations. Concerning to Turkish Programs, it has been reported that over the last 30 years and more particularly during the planned Development Period, special efforts have been made to gain Rural development experience in Turkey. In each five year Development Planning period (DPP), particular goals and instruments of policy for both agricultural development and that of rural areas have been specified and determined. Integrated Rural development Projects and some other typical Rural Development Projects have also been implemented in line with the targets given in each planning period.
ресурс содержит прикрепленный файл

Опубликовано на портале: 28-11-2003
Eva Iglesias
This paper proposes an Economic Drought Management Index (EDMI) that could assist water managers to inter-temporally manage water reservoirs. The index’s main appeal is that it can be easily interpreted and that encompasses in a single number hydrological processes, structural constraints, water institutions’ rules and the economic benefits of the customers served from the supply system. An empirical application of EDMIs is performed for two irrigation districts in Andalusia (Southern Spain), that are managed under different institutional arrangements. Results for one district show that the region’s vulnerability to drought could be reduced following the interpretation of the EDMIs. For the other district, the index shows that water stocks are managed under nearly optimal criteria. This last result shows that there is an efficient level of drought vulnerability, and that increasing supply security levels would result in welfare losses.
ресурс содержит прикрепленный файл

Опубликовано на портале: 29-11-2003
Constantine Iliopoulos
During recent years, dramatic changes in the world food system have led to unprecedented competition between agribusiness firms. To compete in this environment, agricultural cooperatives should invest substantially in long-term activities such as R&D and advertisement. Co-operatives have a difficult problem in acquiring equity capital because the residual claimant (benefactor) is the patron of the firm, not the investor. This organizational design poses to cooperatives three investment constraints:
a) the free rider problem,
b) the horizon problem, and
c) the portfolio problem.
Empirical analysis utilizing a latent variable structural equation model and a large dual response survey suggests that in the U.S. member-patrons are more likely to invest in co-operatives which adopt well defined property rights policies and structures than traditional co-operatives characterized by vaguely-defined property right structures. Agribusiness co-operatives in the European Union are gradually adopting long-term financing methods that possess one or more of the characteristics found in successful U.S. ‘New Generation Cooperatives.’ However, it seems that they have paid less attention in designing their organizational structures (e.g., membership policies). This may inhibit their efforts to gain a competitive advantage over investor-owned firms.
ресурс содержит прикрепленный файл

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.
ресурс содержит прикрепленный файл

Опубликовано на портале: 30-11-2003
Xavier Irz, David Hadley
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.
ресурс содержит прикрепленный файл