836 resultados para Taiwan -- History -- 20th century


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In the light of the dramatically changed social structure of women, surprisingly little gender differences have been found in temporal changes of effects of social origin on occupational class. Using a recently developed methodological approach and Swiss data on birth cohorts from 1925 to 1978, this paper takes a closer look by considering not only the total effect of social origin but also the individual elements of the indirect effect mediated by individual’s education. It finds that this indirect path have changed indeed differently for women and men, but the findings on the direct effect remain mixed, partially because this path seems to be especially sensitive to the conceptualization of social class.

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"Granted a medal of award by the Panama-Pacific international exposition, San Francisco, California, 1915."

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Mode of access: Internet.

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The modern understanding of the pathogenesis of migraine, based on the concept that it is a neurovascular disorder, is often thought to have emerged from the work of Harold Wolff in the period 1932-1962. However, over the preceding 300 years, from William Harvey onwards, various hypotheses of the pathogenesis of migraine had been proposed, a few bearing reasonably strong resemblances to Wolff's ideas, though based on less adequate evidence. Many of these earlier hypotheses regarded migraine either primarily as a vascular (e.g., Willis, Wepfer, Latham) or as a neural disorder (e.g., Harvey, Lieving and his 'nerve storms'). There were also variations around these two major themes and in the 19th Century a number of neurovascufar type hypotheses emerged assigning a major role in migraine pathogenesis to the autonomic nervous system. In addition, during the three centuries there were a number of other hypotheses based on different postulated pathogenic mechanisms, some quite ingenious, which had relatively brief vogues. No hypothesis has yet proved capable of explaining all the features of migraine satisfactorily. (c) 2005 Elsevier Ltd. All rights reserved.