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Всего публикаций в данном разделе: 31

Авторы:
все 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 FG H I J K L M N O P QR S T U V W X Y Z
 
Названия:
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 P Q R S T U V W XY Z
 

Опубликовано на портале: 29-11-2003
Christos Fotopoulos, Athanasios Krystallis, Mitchell Ness
2002
The present study attempts to offer more insights into the Greek wine market with emphasis on wines produced from organically grown grapes by relating wine choice to consumers’ personal value structure. With the use of a qualitative sample and applying the Means-end Chains methodology and the corresponding “laddering” interviewing technique, it attempts first to reveal the way basic motives are linked to wine shopping behaviour of consumers and the way wine purchase-relevant knowledge is stored and organised in their memory in relation to their personal values. Then, by discriminating between organic food buyers and non-buyers, the study identifies motivational and cognitive discriminating differences between the two consumer types, which can offer a solid explanation as to their distinctive purchasing behaviour in respect of the organic products.
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Опубликовано на портале: 29-11-2003
Soren E. Frandsen, Hans G. Jensen
2002
This article presents and analyses the impacts of the EU sugar policy. Particular attention is given to the modelling of the quite complex policy and the calibration of the global general equilibrium model at the member state level. Two scenarios are analysed, namely a reduction in the intervention price of sugar and the sugar quota. It is found that the economic impacts of the two scenarios are quite different in terms of the effects on European production and trade in sugar as well in terms of efficiency. The impacts for developing countries also differ considerably across the two scenarios.
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Опубликовано на портале: 24-12-2003
Steven Franzel, Donald Phiri, Paramu Mafongoya
Durban, 2003
Although there is increasing emphasis on targeting of improved technology towards poor and female farmers, few adoption studies assess the uptake of new practices by these groups in a comprehensive manner.

In this study, community members used the wealth ranking method to identify the different wealth groups in their communities, to determine each household.s wealth status, and to assess the association of wealth and different types of households with the planting of improved tree fallows, a practice for improving crop yields. There were no significant differences between the proportions of women and men planting improved fallows nor were there differences between single women and female heads of households who were married. There was some evidence of association between planting improved fallows and wealth. That 22% of the .poor. group and 16% of the. very poor. group were planting them suggests that there are no barriers preventing low-income households from doing so. Moreover, the proportion of females, poor, and very poor people planting improved fallows varied considerably among villages, suggesting that opportunities exist for increasing their use of the technology. Whereas the use of mineral fertilizer is strongly associated with high- income, male farmers, improved fallows appear to be a gender-neutral and wealth-neutral technology. Poor farmers appreciate improved fallows because they permit them to substitute small amounts of land and labour for cash, their most scarce resource. Finally, the high degree of consistency among different key informants in classifying households among wealth groups confirmed the effectiveness and accuracy of the wealth ranking exercise.
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Опубликовано на портале: 05-12-2003
В 1976 году американский экономист Милтон Фридман получил премию памяти Альфреда Нобеля по экономике за достижения в области анализа потребления, истории денежного обращения и разработки монетарной теории, а также за практический показ сложности политики экономической стабилизации.

Данная публикация представляет собой его нобелевскую лекцию; в ней автор рассматривает взаимосвязи между такими макроэкономическими понятиями как: инфляция и безработица и измерение с их помощью экономического роста экономики страны. Лекция написана простым английским языком. Она находится в открытом доступе на официальном сайте.
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Опубликовано на портале: 30-12-2003
Lilyan E. Fulginiti, Richard K. Perrin, Bingxin Yu
Durban, 2003
Agricultural productivity in 41 Sub-Saharan Africa (SSA) countries from 1960 to 1999 is examined by estimating a semi-nonparametric Fourier production frontier. Over the four decades the estimated rate of productivity change was 0.83% per year, although the average rate from 1985-99 was a strong 1.90% per year. Former UK colonies exhibited significantly higher productivity gains than others, while Liberia and countries that had been colonies of Portugal or Belgium exhibited net reductions in productivity. We measure a significant reduction in productivity during political conflicts and wars, and a significant increase in productivity among those countries with a measure of political rights and civil liberties.
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Опубликовано на портале: 30-11-2003
Jun Furuya, Takeshi Sakurai
2003
Most of the large-scale millers in Ghana provide a loan to the farmers under the agreement that the farmers will bring their paddy to them.

This paper examines the effect of this interlinkage on the efficiency of rice milling. A quadratic cost function was estimated, and capacity utilization was calculated in relation to money lending. The results show that if the millers provide a loan to the farmers, the operating rate will increase by 24%.
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Опубликовано на портале: 30-11-2003
G.R. Griffith, R.J. Farquharson, S.A. Barwick, R.G. Banks, W.E. Holmes
2003
This study aimed at estimating the costs and benefits of all beef cattle genetic improvement activity, across Australia, over the period 1970 to the present. The total cumulative Present Value (PV) of investments by industry, government and other agencies into selection, crossbreeding and grading up since 1963, and of imported genetics, was estimated to be $340m (in $2001 at a 7% discount rate). Using a suite of genetic evaluation models, farming systems models and an industry-level model, the cumulative PV of industry returns were estimated. Within-breed selection generated $944m; crossbreeding in southern Australia $255m; changing breed composition in southern Australia $62m; and changing breed composition in northern Australia $8.1bn. The benefit/cost ratio for this investment was 28:1 over the last 30 years.
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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: 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: 28-11-2003
Lionel G. Hubbard, Imre Ferto
2002
Intra-industry trade in agri-food products between Hungary and the EU is shown to be low and dominated by vertically rather than horizontally differentiated products, suggesting higher economic adjustment costs. Following recent empirical studies, we then test econometrically for the determinants of this trade using different measures of horizontal and vertical trade, and employing an array of popular explanatory variables. Results suggest that separating the measure of intra-industry trade into vertical and horizontal provides for better estimation and supports the contention that the determinants may differ by type of trade. In the regression analysis, the level of intra-industry trade is found to serve as a better dependent variable than the degree or share of intra-industry trade.
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Опубликовано на портале: 28-05-2008
Marius T.H. Meeus, Jan Faber, Leon A.G. Oerlemans
2002
This paper is based on the assumption that a synthesis of the old Chandlerian structure follows strategy notion and the literature on innovation and learning. The main research question was as follows: To what extent does the level of strategic activity in innovation affect the external and internal structuring directly and to what extent is this effect mediated by learning and innovation processes?
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Опубликовано на портале: 30-11-2003
Patricia Mejias, Consuelo Varela-Ortega, Guillermo Flichman
2003
The interactions of water policies and agricultural policies are increasingly determinant for achieving an efficient management of water resources in many countries. In the EU, agricultural and environmental policies are seeking to converge progressively towards mutually compatible objectives and, in this context, the recently reformed Common agricultural Policy (Agenda 2000) and the EU Water Framework Directive constitute the policy framework in which irrigated agriculture and hence water use will evolve. In fact, one of the measures of the European Water Directive is to establish a water pricing policy for improving water use and attaining a more efficient water allocation. The aim of this research is to investigate the irrigators. responses to these changing policy developments in a self-managed irrigation district in Southern Spain. For this purpose, we have developed a stochastic programming model that estimates the farmers. responses to the application of water pricing policies in different agricultural policies scenarios when water availability is subject to varying climate conditions and water storage capacity in the district.s reservoir. Results show that irrigators are price-responsive but a similar water-pricing policy could have distinct effects on water use, farmers. income and collected revenue by the water authority in different agricultural policy options. Water availability is a determinant factor and pricing policies are less effective for reducing water consumption in drought years. Thus, there is a need to integrate the objectives of Water Policies within the objectives of the CAP programs to avoid distortion effects and to seek a synergy between these two policies.
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Опубликовано на портале: 24-12-2003
Flora J. Nankhuni, Jill L. Findeis
Durban, 2003
This paper presents results of research that investigates if long hours of work spent by children in fuel wood collection and water collection activities, hereafter referred to as resource (collection) work, are related to the probability that a child aged 6-14 will attend school. Possible endogeneity of resource work hours is corrected for, using two-stage conditional maximum likelihood estimation. Using data from a 1997-98 Malawi Integrated Household Survey (IHS) conducted by the National Statistics Office (NSO), the study finds that children are significantly involved in resource collection work and their probability of attending school decreases with increases in hours spent on this work. The study further shows that girls spend more hours on resource work and are more likely to be going to school while burdened by this work. Consequently, girls may find it difficult to progress well in school. However, girls are not necessarily less likely to be attending school. The results further show that presence of more women in a household is associated with a lower burden of resource work on children and a higher probability of children.s school attendance while that of men is not. Finally, the study shows that children from the most environmentally degraded districts of central and southern Malawi are less likely to attend school and few of them have progressed to secondary school compared to those from the north region districts.
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Опубликовано на портале: 29-11-2003
Guirao Perez, Cano Fernandez, Lopez M.I. Yurda, Rodriguez Donate
2002
In this paper we measure the impact of an individual’s socioeconomic conditions on the decision to consume wine in a traditionally wine-producing area. Based on the data obtained in an exhaustive survey on wine consumption and through discrete choice models, we assess the changes which come about in the decisions to consume the different types of wine under consideration, and we obtain the most relevant distinctive and differentiated characteristics for each one of them.
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Опубликовано на портале: 24-12-2003
John Sumelius, Zoran Grgic, Milan Mesic, Ramona Franic
Durban, 2003
The aim of this paper is to identify optional ways of preventing NO3-levels from rising within Croatian farming systems, and the implications from the viewpoint of the manager. More specifically, the purpose is to

1) Determine whether Croatian farmers exceed profit maximising levels of N-fertiliser use in maize cultivation, and its possible influence on NO3-N-levels.

2) To estimate the marginal abatement cost (MAC), at the farm level, of reducing NO3-N leaching through the following instruments: a tax on optimal N-doses, a product tax and an N-fertiliser quota and a requirement for all instruments to correspond to the same abatement level.

Based on N-response experiment from feld trial for maize N-response curves were estimated. A sample of 20 family farms was used for calculating intensity, nutrient content in manure, and the prices paid for N and obtained for maize. Profit maximising doses from the field trials were compared with the use of nutrients on farms. An effluent production function was estimated based on experiments with NO3-N contents in lysimeter water for the same treatment levels as those in the N-response experiments. The results indicate that farmers use higher than optimal levels of N-fertilisers, if the manure is fully accounted for. In this case the estimated NO3-N/l level in groundwater is 162-192 % higher than the critical level stipulated by the Nitrate Directive. Neglecting the N-content in manure shows close to profit maximising nutrient levels . At this fertlising level the estimated NO3/l is approximately 62 mg NO3/l or clearly higher that the critical level stipulated by the nitrate directive (50 mg NO3/l). Through any of the three instruments a 76% NO3-leaching reduction could be obtained. It was concluded, however, that the quota has the lowest MAC (0.92 euro/mg NO3/l), followed by the N-fertiliser tax (3.65 euro/mg NO3/l), and the product tax comes in third place (9.32 euro/mg NO3/l). Management practices that may increase yield levels, and correspondingly NO3-leaching in the short and long run, were also identified. One way to achieve a quick improvement might be a system of cross compliance, stipulating a code of good agricultural practices.
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