Эксоцман
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: 26

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 H I J K L M N O P Q R S T U V WX 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: 24-12-2003
Caroline Saunders, Anita Wreford
Durban, 2003
This paper focuses on the impact of mitigating greenhouse gases (GHG) on agricultural trade. In particular, the paper assesses the impact on New Zealand (NZ), which is highly reliant on agricultural trade, with a high percentage of its total GHG emissions are originating in the agricultural sector. The paper also analyses the impact of mitigation strategies in the European Union (EU), which has a low proportion of GHG coming from agriculture, a highly protected agriculture sector, and is a major market and competitor for NZ. Results from a partial equilibrium trade model, the LTEM, show clearly that while these mitigation strategies achieve the goal of GHG reduction, producer returns are also negatively affected. The value of these changes in emissions are then calculated, based on US$15/tonne of carbon dioxide (CO2), and producer returns adjusted for this. Although this value of CO2 goes some way towards offsetting the reduction in producer returns, it would need to be considerably greater in order to provide any significant compensation.
ресурс содержит прикрепленный файл

Опубликовано на портале: 12-12-2003
Eduardo Segarra, Daniel G. de la Torre Ugarte, Jaime Malaga, Gary W. Williams
Durban, 2003
A non-linear optimization model which maximizes total Ecuadorian social welfare, defined as the sum of Consumers’ and producers’ surpluses for the four major crops (corn, bananas, rice and African palm) is developed to evaluate the tradeoff between welfare and environmental degradation in Ecuador. It was found that a total welfare loss of US$122 million (a 11 percent reduction - from US$ 1.112 billion to US$ 989.66 million) would be expected from a 30 percent reduction in the total pesticide load on the environment in the production of the four major crops. The distributional impacts of the welfare loss were found, however, to be significantly skewed toward the loss of consumers’ surplus. Specifically, a 30 percent reduction of total pesticide load on the environment would result in a reduction of 3.86 percent of producers’ total surplus while consumers would be expected to loose 19.46 percent of their total surplus.
ресурс содержит прикрепленный файл

Опубликовано на портале: 12-12-2003
Steven J. Staal, Dannie Romney, Isabelle Baltenweck, Michael Waithaka
Durban, 2003
Although soil fertility is recognized as a primary constraint to agricultural production in developing countries, use of fertilizer in Sub-Saharan Africa is declining. Smallholder farmers still rely heavily on livestock manure for soil fertility management. To explore the determinants of soil fertility management practices, including both the use of cattle manure and inorganic fertilizer, data are used from a sample of 3,330 geo-referenced farm households across Central and Western Kenya. A bivariate probit model is applied to jointly examine the use of the two technologies. Particular attention is given to measures of location related to market access and agroclimate, which in the adoption literature have typically been addressed using crude proxies. To avoid such proxies, GIS-derived variables are integrated into the household decision model. Their use also allows the spatial prediction of uptake based on parameter estimates. The results show clearly the derived-demand nature of soil fertility services, based on markets for farm outputs. They also illustrate that supply of manure for soil fertility amendments is conditioned by demand for livestock products, especially milk. The integration of GIS-derived variables is shown to better estimate the effects of location than the usual measures employed, and offers scope to wider use in technology adoption research.
ресурс содержит прикрепленный файл

Опубликовано на портале: 31-12-2003
Edilegnaw Wale, Detlef Virchow
Durban, 2003
Crop genetic resources are the building blocks of sustainable agricultural development due to their relevance not only as inputs for variety development but also as indigenous crop insurance mechanisms through traditional variety portfolio management. Their continuous survival is, however, threatened by natural and human driven factors. This threat has induced the need for designing conservation measures. Among the in situ and ex situ conservation options available to conserve crop genetic resources, on-farm conservation has recently attracted enormous attention. To make this option operational, placing incentives (that link conservation with utilization) and removal of perverse incentives are believed to be crucial so that landraces of no immediate interest to farmers can be conserved.

However, before designing sound incentives and/or removing perverse incentives, we have to understand farmers. motives for managing a portfolio of traditional varieties.

To address our objective, we have adopted a utility based model that considers on-farm diversity as a positive externality of farmers. livelihood decisions. Accordingly, on-farm diversity is considered as the derived outcome of farmers. revealed preferences subject to their concerns and constraints. To empirically test the relationships, a Poisson regression model is estimated using rural household survey data collected from 198 sorghum growing farmers in East Ethiopia. The results have shown the most important diversity promoting factors and those factors detaching the link between farmers’ ‘survival first’ motives and their spillover effects on sorghum diversity. Based on the results, the paper concludes outlining the policy implications of the findings.
ресурс содержит прикрепленный файл

Опубликовано на портале: 04-01-2004
Jurgen Wandel
Boston: Kluwer Academic Publishers, 2000, 359-381 с.
By means of the transaction cost theory, the study identifies the motives for vertical integration or coordination in the Russian agro-food sector and assesses the forms of vertical integration developed so far. One can distinguish between state-initiated integration forms and such initiated by the economic agents themselves. Whereas the aim of the former is to dilute assumed market power of the food industry, uncertainty about market partners regarding reliable supply and marketing conditions and especially the fulfillment of payment obligation is the main motive for the latter. Often the chosen forms of vertical integration or cooperation not only comprise enterprises of the whole marketing chain, but also of a whole region. This could create problems with regard to competition, since barriers to entry could be raised substantially and collusion among economic agents facilitated.
ресурс содержит прикрепленный файл

Опубликовано на портале: 04-01-2004
Peter Wehrheim
Boston: Kluwer Academic Publishers, 2000, 155-179 с.
This paper discusses the interdependence between Russia’s agro-food sector and the rest of the economy. To address the impact of macroeconomic changes on agro-food markets in the transition period, a stylized computable general equilibrium model (CGE) has been constructed. The current data base of the model consists of five food industry sectors and two agricultural sectors among a total number of 17 sectors. The model is used for three simulations the results of which highlight the magnitude of macroeconomic repercussions stemming from changes in agriculture’s sector performance.
ресурс содержит прикрепленный файл

Опубликовано на портале: 24-12-2003
Katinka Weinberger
Durban, 2003
Micronutrient malnutrition, particularly of iron, is widespread on the South Asian subcontinent and economic losses due to reduced productivity of afflicted population groups are believed to be substantial.

This paper examines the impact of micronutrient intake on productivity of household engaged in agricultural labor in India by applying a two-stage least squares (2SLS) estimation technique. The micronutrient under investigation is iron. The results indicate that productivity, measured in wages is indeed affected through insufficient intake, and that wages would on average be 5 to 17.3 percent higher, if households would achieve recommended intake levels of the micronutrient discussed here. The results demonstrate that policy interventions that aim at enhancing micronutrient intake can be regarded as investments in improved productivity and higher household incomes. Enhancing micronutrient intake will contribute significantly to overall economic growth and development.
ресурс содержит прикрепленный файл

Опубликовано на портале: 29-11-2003
Christoph Weiss, Wolfgang Briglauer
2002
This paper examines the impact of various farm and household characteristics (such as farm size, the off-farm employment status, the farm operator's age and schooling and the number of family members) on the level as well as the dynamics of on-farm diversification. Using linked census data for Upper-Austria from 1980, 1985 and 1990 we provide evidence that smaller farms are more specialised and also tend to increase the degree of specialisation over time more quickly than large farms. A significantly lower degree of diversification (higher degree of specialisation) as well as a stronger reduction in diversification over time is also reported for businesses operated by older, less educated, part-time farm operators. The analysis of diversification dynamics also suggests that (a) farms adjust to changes in their environment by steadily approaching their long-run equilibrium level of diversification ( β-convergence), and (b) the variance of the diversification distribution declines over time (σ-convergence).
ресурс содержит прикрепленный файл

Опубликовано на портале: 24-12-2003
Tassew Woldehanna
Durban, 2003
The impact of education on farmers. choice of activities and household welfare are modelled and estimated using farm household data for rural Ethiopia. We find that education has significant effects on household welfare. Schooling increases the adoption of new technologies and facilitates entry into highly profitable farm and non-farm activities, all of which may increase welfare and help farm households escape out of income poverty. An additional year of schooling in a household increases the welfare by 8.5 Percent. These findings provide a rationale to governments and donor organisations to include the expansion of rural schooling (through encouragement of parents to send their children to school) in their policy reform as a means of reducing material deprivation.
ресурс содержит прикрепленный файл

Опубликовано на портале: 29-11-2003
Tassew Woldehanna, Arie Oskam
2002
There is some confusion in the literature on the consumption behaviour of farmers. We try to clear up some of the issues surrounding this confusion by elaborating and testing a model. Euler equations have been derived from a constant relative risk aversion utility function for total consumption expenditure, household expenditure and other expenditure, which includes durable goods. According to a test of Euler equations, farm households are not simply optimising lifetime utility. Rather, these households follow simple consumption rules, strongly influenced by habit formation. In line with most of the literature, we find that farm households are not borrowing constrained in their consumption expenditures.
ресурс содержит прикрепленный файл

Опубликовано на портале: 30-11-2003
Rhung-Jieh Woo, Hsin-Yeh Tsai
2003
Chrysanthemum is the primary flower Taiwan exports. However, the exports showed decreasing trend in recent years. The volumes exported were 826,596 kilograms in 2001, and Japan was the major market. About 99% of the chrysanthemum exports went to the Japanese market. Quarantine procedure is one of the measures Japanese government adopts to protect its domestic agricultural production. When chrysanthemum exports fail to pass the quarantine procedure, fumigation is required. According to statistics, the fumigated rate for Taiwan.s chrysanthemum exports to Japan reached 90Ѓ“ during 1996-1997, and was 70% in 1998. Fumigation could damage the quality and the reputation of Taiwan.s chrysanthemum exported. However, the degree of strictness of quarantine applied to the exports varied from time to time, hence caused the chrysanthemum exports facing with trade uncertainty. In addition, quality unevenness of exports, or standards that are not uniformly enforced could also cause trade uncertainty (not all exports are allowed to enter into the importing market).

It is suspected that the strictness of quarantine of a certain commodity is influenced by the domestic market conditions of supply and demand in Japan. During the seasons when Japan can produce enough chrysanthemum domestically, Japan might take stricter quarantine procedure to prevent foreign chrysanthemum exports from entering the Japanese domestic market. Trade uncertainty hence increased since not all of the amount exported each time is allowed to enter into Japan.s chrysanthemum market.

Since global agricultural trade liberalization is an unavoidable trend, non-tariff trade barriers are to be disciplined, it is expected that trade uncertainty of chrysanthemum trade between Taiwan and Japan will be reduced gradually during the process of agricultural trade liberalization in Japan.

The main objective of this study is to explore the possible influences of reducing trade uncertainty of chrysanthemum trade between Taiwan and Japan through quantitative analyses.
ресурс содержит прикрепленный файл