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The agricultural sector in West Africa is not at present capable of meeting the growing demand for food for its population and of reversing unfavourable trends in soil degradation. We argue that integrated soil management is an essential condition for sustainable agricultural development in the many regions in West Africa where population pressure forces an intensification of land use. Such an approach combines improved soil-moisture storage measures, and the use of organic and inorganic fertilizers and soil amendments. The synergetic effects which could result from this combination are indispensable for achieving the productivity increases needed to cope with the pressure of population. Current (neo-liberal and ecological-participationist) policy approaches are unable to realize the transition towards integrated soil management technologies. The time lags involved in learning to use new technologies, in the adaptation of technologies to local circumstances, and in reaping the benefits of soil fertility investments call for (at least temporary) support of agricultural incomes.  相似文献   
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Professional development plans (PDPs) have recently been introduced in Dutch schools to support teachers' professional development. However, teachers' beliefs regarding the use of PDPs have not been systematically researched, whereas research on the use of PDPs indicates that the implementation is not always successful and depends on how use is perceived by users. Some teachers may doubt the usefulness and purpose of a PDP, and this might influence their reactions to its introduction. Using Fishbein and Ajzen's theory of planned behaviour, the current study explored teachers' characteristics (such as age and years of experience in education) and their beliefs about intention to use a PDP. Clusters of teachers with similar characteristics and beliefs were identified to permit the design of interventions specific to each cluster. Semi‐structured interviews were conducted to reveal these beliefs and characteristics for a sample of 41 teachers working in schools where using a PDP was mandatory. The results showed that most teachers had a positive attitude towards using a PDP. However, because using a PDP was mandatory, they felt pressured to produce one. Moreover, it was not a priority. This was because of their high workload. The present study contributes to the literature by adding knowledge of teachers' beliefs about the use of PDPs. This knowledge may help the PDP to become a more effective device in promoting teachers' professional development.  相似文献   
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Employment perspectives for Berlin  相似文献   
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Taxation and Foreign Direct Investment: A Synthesis of Empirical Research   总被引:9,自引:2,他引:9  
This paper reviews the empirical literature on the impact of company taxes on the allocation of foreign direct investment. We compare the outcomes of 25 empirical studies by computing the tax rate elasticity under a uniform definition. The median value of the tax rate elasticity in the literature is around –3.3 (i.e. a 1%-point reduction in the host-country tax rate raises foreign direct investment in that country by 3.3%). There exists substantial variation across studies, however. By performing a meta-analysis, the paper aims to explain this variation by the differences in characteristics of the underlying studies. Systematic differences between studies are found with respect to the type of foreign capital data used, and the type of tax rates adopted. We find no systematic differences in the responsiveness of investors from tax credit countries and tax exemption countries.  相似文献   
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This article studies the question whether labour market institutions can explain the large differences in unemployment rates in the new member states. It investigates several labour market institutions and concludes that they are on average no more rigid in the new member states than in the old ones. However, there is a lot of heterogeneity both in terms of institutions and unemployment rates. The impact of labour market institutions on performance is empirically examined for a panel of European countries. These results are used to assess to what extent labour market institutions are responsible for the diverse unemployment experiences in the new member states. Labour market institutions can explain only a small part of these differences. Other causes of unemployment seem to be more important.
Laura ThissenEmail:
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