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By scientiometrically analyzing the physics-literature produced between 1925 and 1933 it is shown that the purely quantitative contribution of physicists subsequently emigrating from Germany to the literature produced by the physics community in this country was much lower than hitherto estimated. The actual figure is not in the range of 30%, as is generally assumed, but much nearer to 11%. Control analysis of three leading German physics journals and of memberships in the Deutsche Physikalische Gesellschaft confirms this result. Further investigation of university calendars shows that transferring these results to purely academic physics would amount to committing a “universalistic fallacy”. In academic physics emigré-physicists held a total of 15,5% of all teaching postitions. Differentiating the physics literature into various specialties allows further insights into the cognitive and social structure of the German physics community before 1933. Works of emigré-physicists are not randomly distributed over specialities; instead, the distribution reveals a nearly perfect correlation with what could be called “the specialty's paradigmatic age”. The spectrum begins with quantum theory, where future emigrants produced more than 25% of the literature, and fades away with acoustics, where their contribution amounts to less than 4%. The commonly accepted explanation of this phenomenon, which is based on the assumption that time of institutionalization of a specialty, “prestige” of that specialty, and entrance barriers for Jewish scientists are correlated, is falsified by two cases of non- or zero-correlation: by the very old specialties and by the technical disciplines. A new explanans is proposed which is based on the hypothesis of cognitive and social marginality being correlated and on a certain amount of cognitive marginality enhancing the disposition to innovative behavior and creativity.  相似文献   
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After the Black Death of 1348 the Plague was not only the cause of personal disasters and individual despair, but was also of political and social significance. Each outbreak of the epidemic implied a crisis for the community with crucial consequences for trade, jurisdiction, administration, executive powers and for food supply. The faith in authority by the leading university medics was tragic, as they subscribed to the hippocratic-galenical humoral pathology and to the miasmatic theory. On the other hand, municipal authorities, from the 14th century onwards responded to the epidemic in a pragmatic manner, isolating the sick, carrying out checks, imposing trade embargos and special epidemic laws. From the 15th century onwards people were also put under quarantine. The medics' role, their relationship with the government and their tendency to play down the diagnosis will be discussed at length, together with the questionable tradition of the Regimina pestis.  相似文献   
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The paper addresses the question of how different types of regions mill be affected by the development of a major new transport infrastructure such as the Channel Tunnel. It summarizes a study on the regional impacts of the Channel Tunnel throughout the European Union (EU). The research design combined qualitative methods of futures exploration employing 13 regional case studies with quantitative forecasting techniques using the MEPLAN transport and economic model. The paper presents the methodology and major results of the two approaches with respect to the impacts of the Channel Tunnel on transport flows and regional development in Europe and draws conclusions for transport and regional policy of the EU. The paper demonstrates that the removal of a bottleneck like the Channel Tunnel does not necessarily induce economic gains in all adjacent regions. Much more important for regional economic development than the reduction of transport costs are the image to be a region well integrated into the European high‐speed transport network and an active political response of the region to take advantage of opportunities like the Channel Tunnel.  相似文献   
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Recent appraisals of historical geography range widely in their assessment of the field. Donald Meinig (1989), writing of 'The Historical Geography Imperative,' concludes: 'historical geography is not, has never been, just another item in the proliferating diversity of our grand enterprise. Rather, like physical and environmental geography, it is one of the foundations of the whole enterprise. In its own way historical geography encompasses and contributes to all of geography. Micheal Dear (1988) disagrees. In 'The postmodern challenge: Reconstructing human geography,' he states that historical geography is 'overde-termined,' and 'an empty concept' conveying 'few (if any) significant analytical distinctions …. He concludes that historical geography does 'little more than confirm what geography is about. Both writers agree on the pervasive and comprehensive nature of historical geography, but Dear sees this inclusiveness as more of a cincture, whereas Meinig conveys the fundamental and embracing understanding of geography inherent in the practice of historical geography.  相似文献   
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