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Всего публикаций в данном разделе: 34

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:
все А БВ Г Д ЕЖЗ И ЙК ЛМ Н О П Р С Т У ФХЦ ЧШЩЭ ЮЯ
A B C D EF G H I JKL M N O P Q R S T U V W XY Z
 

Опубликовано на портале: 29-03-2005
Klaus Wagner
2004
The evaluation of the effects of different measures of the Austrian Agri-Environmental Programme (ÖPUL) on groundwater has to take into consideration various different dimensions of the analysis process. To begin with, there are EU guidelines for the evaluation that lay down questions, criteria and indicators that have to be answered. A second dimension of the evaluation process refers to the level of the different measures. Here we are dealing with single measures, bundles of measures for a specific objective and voluntary or obligatory combinations of measures. In addition, we have to consider that the measures concerning groundwater protection can have effects in a strong or weak, direct or indirect manner, in a selective or more extensive way. The time-related aspect of the effects is of enormous importance, not only in connection with the different programme variants (ÖPUL 95, ÖPUL 98 and ÖPUL 2000) but also in connection with the short-term or long-term effects of measures, depending also on local and regional characteristics. Of great importance is the spatial component in the analyses. In Austria, we have pore-groundwater regions where programmes for measuring the groundwater quality have been installed for many years. Of equal interest is the development of the groundwater quality in ÖPUL testing areas because there is detailed information available about the agricultural structures and the acceptance of ÖPUL measures. Finally, we have to observe the particular groundwater measure project regions, where a variety of special groundwater measures is available to farmers. These different types of regions frequently overlap each other but not always. Accordingly, the evaluation process is a multidimensional task that has to describe the relevance and the acceptance of the measures along with their potential and actual effects.
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Опубликовано на портале: 31-03-2005
Riccardo Scarpa, Laura Viganò, Davide Bortolozzo
2004
A farmer’s choice to part-take into an on farm investment programme can be modelled as a discrete choice. The idea of this paper is to test the possibility of using discrete choice models in the field of the evaluation of structural policies. Farmers choose to take part into agricultural programmes according to their preferences, their structural type and their economic environment. Adhesion to a voluntary scheme or policy can be cast as a discrete choice problem. Hence, discrete choice models are adequate to describe probability of choice, especially against a framework of utility maximization. First, we want to explore if the choice of investing in schemes supported by EAGGF depends on farms’ characteristics, such as Used Agricultural Area, Standard Gross Margin, Farm type, Possession of lands, Form of Farm Management, Standard Work Unit, class of European Size Unit, Fixed costs, etc.. We use is the binomial logit model to explain the probability of making an on-farm investment with regard to Italian Central and Northern Regions. The estimation of such a model allows us to identify the determinants of such a decision. We also use discrete choice analysis to identify the significant determinants of the probability of selection of on-farm investment across 12 investment categories within the Regulation (EC) No 950/97. These include – amongst others – land purchase, system for refusal treatment, land improvement, agricultural machinery, agricultural and non-agricultural farm buildings, land improvements, permanent cultivations etc. We find such an approach to be insightful on the basis of data from the Italian RICA business farm survey, and hence propose to develop it further.
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Опубликовано на портале: 30-12-2003
Guy Blaise Nkamleu, Jim Gokowski, Harounan Kazianga
Durban, 2003
This paper examines changes in agricultural productivity in 10 Sub-saharan countries. The relative performance of agricultural sector was gauged using data envelopment analysis. From a panel data set of the 10 countries which included the 28-year period 1972-1999, mathematical programming methods were used to measure Malmquist indexes of total factor productivity. It was found that, during that period, total factor productivity have experienced a negative evolution in sample countries. A decomposition of those measures suggest that, most of the weak performance of factors productivity is attributable more to technological change than technical efficiency change. French-speaking countries better succeeded to raise their productivity than English-speaking countries do. In addition, it have been found that Sahelian countries failed to rise their agricultural productivity compared to forest countries where a positive evolution have been detected.
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Опубликовано на портале: 28-11-2003
A. Gracia, Mehrez Ameur
2002
Agrifood firms operate in a more global, saturated and competitive market than other manufacturing firms, and they have smaller size. These firms certainly need to define appropriate strategies related to accessing the international market and to investing in innovative activities. This two decisions are related to firms size because as Krugman states international trade is not only explained by differences in technology between countries but also by firms’ desire to extend their sales in foreign markets to take advantage of the economies of scales. Therefore, it seems to exist a simultaneous relation between firm size, exports and innovative activities. The aim of this paper is to analyse agrifood firms’ decisions on these three strategies: export behaviour, innovative activities and firm’s size in comparison to other manufacturing firms using some modification from the simultaneous model defined by Entorf and Pohlmeier. The study is focused on the Spanish manufactured firms taking special attention to the agri-food ones. Data come from a National Survey (“Encuesta de Estrategias Empresariales”) carried out by the “Fundación Empresa Pública”) from 1990. Results indicate that agri-food manufacturing firms decision process related to their size, export share and innovative activities is not a simultaneous process. Moreover, some differences with the rest of manufactured firms have been detected, In particular, agri-food firms have lower export shares, lower size and lower innovation intensity than Spanish firms in other manufacturing sectors. Spanish firms decision process on strategic variables (size, export share and innovation) is characterized by a recursive decision process where firms firstly decide export intensity, secondly, they decide their size or total sales depending on the previous decision and, finally, they decide their innovative intensity depending on the last two.
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