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This paper uses data from the 1991 sweep of the National Child Development Study (NCDS) and the 1998 Labour Force Survey (LFS) to provide a comprehensive analysis of the labour market returns to academic and vocational qualifications. The results show that the wage premia from academic qualifications are typically higher than from vocational qualifications. However, this gap is reduced somewhat, when we control for the amount of time taken to acquire different qualifications. This is particularly important for vocational courses, which generally take shorter time periods to complete. In the paper we also investigate how returns vary by gender, subsequent qualifications, and the natural ability of individuals. Finally, by comparing the NCDS results with those from the LFS, we estimate the bias that can result from not controlling for factors such as ability, family background and measurement error. The results reveal that the estimated returns in the NCDS equations controlling for ability, family background and measurement error are similar to the simple OLS estimates obtained with the LFS, which do not control for these factors. This suggests that the biases generally offset one another.  相似文献   
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A wide range of intractable problems such as polluting emissions, noise, accidents, resource depletion, and inaccessibility of amenities are associated with the current transport regime. Given the slow movement towards a more sustainable mobility system, more radical, systemic innovation - a ‘transition’ - is required. Broadly speaking, this may be achieved via three routes: technological change, modal shift, and reduced travel demand. Drawing on concepts from the transitions literature (e.g., [Geels, F.W.: Technological Transitions and System Innovations: A Co-evolutionary and Socio-Technical Analysis, Edward Elgar, Cheltenham, 2005.]), we conceptualise each of these routes as a bundle of niche activities within an Area of Innovation, deviating to differing degrees from the current mobility ‘regime’. We present empirical evidence and indications of ongoing development of niches in these three areas within the UK and Sweden, and explore processes of co-evolution, divergence and tension within and between niches. Findings indicate recent market penetration of novel transport technologies, more advanced than modal shift or demand management activities; however, different transport technologies are more successful in each country. We also identify examples of a close relationship between development of radical vehicle/fuel technologies and provision of mobility services; and information technology as a driver in all three areas of innovation. We conclude that future innovation in transport depends on diversity, hybridisation, and co-evolution of niches. Finally, policy implications are discussed.  相似文献   
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Participants in this pilot study are asked to rank their perceptions of food waste by choosing between pairs of four types of foods of equal weight: chicken, cheese, bread and peas. We examine whether these perceptions are consistent for proportionally different weights and whether they are linked to the perceived cost of the items. The subjects (n = 106) who are students are randomly assigned to one of three information treatments: a control, a food waste video or the text of the food waste video. We find that the subjects have very accurate perceptions of the environmental impacts of food waste and the relative wastefulness of different food groups. These perceptions are not related to cooking skills or frequency. We find that the perceptions are consistent for proportionally different weights of food: 25 and 50 g. We also find that the perceptions are linked to participants’ assessments of the relative prices of the foods. However, while the participants have somewhat accurate estimates of the relative prices, they vastly overestimate the actual prices of foods. This implies that more accurate information about the true prices could actually decrease their perceptions of the wastefulness of throwing out food. Given that the participants had highly accurate perceptions of the environmental impacts of food waste and the relative wastefulness of animal vs. plant products, we found no significant increase in overall accuracy of perceptions due to information treatment, except for bread, for those who saw the food waste video.  相似文献   
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The foreign policy literature typically sees Congress abdicating its policy making role to the executive, implying a presidential dominance model is superior to other policy process models (joint participation, congressional dominance, and bureaucratic dominance). This article uses two theoretical approaches to investigate who actually makes U.S. trade policy: a political economy approach and an institutional approach. We look at the 1985 96 period and at individual presidencies: Reagan (1985-88), Bush (1989-92), and Clinton (1993-96). Contrary to the literature, we find strong evidence that Congress is an active participant in the trade policy making process. Using a variety of empirical techniques (crosstabs, the Index of Revealed Comparative Advantage, pairwise correlations, and stepwise logistic regressions), we confirm that the trade policy process for product-industry-specific policies tends to be dominated by Congress whereas the executive branch is more influential in the policy process for country-specific policies. We conclude by noting the advantage of integrating aspects of both the political economy of trade and institu tional literatures to understand the nuances of U.S. foreign trade policy making.  相似文献   
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Multinational enterprises are, sina qua non, the world's technology producers. In this paper, we explore the concept of technology production by multinationals, focusing on three aspects: (i) technology as a firm-specific advantage, (ii) the costs of technology transfer, and (iii) technology spillovers. In each case, we outline current views and debates in the field about the role played by large multinationals in technology production. Finally, we compare MNEs with small and medium sized enterprises (SMEs) as technology producers. We conclude that SMEs face certain constraints, due to small size and inadequate financing, that raise their costs of technology production and transfer, relative to the costs for MNEs. On the other hand, their flexibility and use of unconventional methods can create successful mini-nationals in niche markets.  相似文献   
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This article serves as an introduction to the special issue on Entrepreneurship Research in Europe, a selection of papers from the XIVth RENT conference held in Prague, the Czech Republic, November 23–24, 2000. It provides an overview of the articles and also discusses some of the themes that bind them together: Networking and the diffusion of innovations and family business. In addition, the paper includes a short section highlighting advances in the Italian entrepreneurship climate as evidenced by data provided by several of the papers in this issue carried out by Italian researchers on Italian SMEs.  相似文献   
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It is the intent of this article to deconstruct the practices of border crossers, whereby the political identities of women have been relegated to the domestic/private sphere rendering them political innocents. However in West Belfast, women's designation to the home is what facilitated their ability to not only to transcend the borders of West Belfast but also to transgress women's confinement to the home. By contrast, taxi drivers are perceived as unrespectable wild men, cowboys and societal misfits who have been tainted by their border crossings. Interestingly, these groups would never be considered political subjects, as would an IRA volunteer, or resistance protester. However by way of their everyday practices of shopping and driving a taxi, these individuals are not only destabilising the boundary lines of West Belfast but also those of the nation. To this end, the sociospatial practices of these border crossers, which constitutes the expansion and restriction of public and private space, raises the possibilities of a new form of geopolitics determined between gender, politics and mobility.  相似文献   
10.
Migrant networks, language learning and tourism employment   总被引:1,自引:0,他引:1  
This paper examines the relationship between migrants’ social networks, the processes of language acquisition and tourism employment. Data collected using netnography and interviews are used to identify the strategies that Polish workers in the UK use to develop their language skills. The paper highlights the roles played by co-workers, co-nationals and customers in migrants’ language learning, both in the physical spaces of work and the virtual spaces of internet forums. It also shows how migrant workers exchange knowledge about the use of English during different stages of their migration careers: prior to leaving their country of origin and getting a job, during their employment and after leaving their job. Implications for academic inquiry and human resource management practice are outlined.  相似文献   
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