共查询到20条相似文献,搜索用时 15 毫秒
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Paul Eling 《Journal of the history of the neurosciences》2013,22(1):1-4
Age-related memory loss was a marginal issue in medical discussions during early modern times and until well into the second half of the 17th century. There are many possible explanations: the lack of similar traditions in antiquity and in the Middle Ages, insufficient physiological and morphological knowledge of the brain, and the underlying conflict between idealistic and materialistic perspectives on the functions of the soul and the conditions of these in old age. After these boundaries had been pushed back by the influence of Cartesianism and Iatromechanism, the problem of age-related memory loss was increasingly regarded as a physical illness and began to receive more attention. This trend first occurred in medicine, before spreading to the literary world, where the novel “Gulliver's Travels” is one clear and famous example. 相似文献
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Indo-Iranian Journal - 相似文献
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Peter J. Mitchell 《Journal of World Prehistory》1997,11(4):359-424
Encouraged by new, ethnographically grounded interpretations of San rock art, Holocene hunter-gatherer research south of the Limpopo has undergone a partial paradigm shift over the last decade, away from ecological issues and in favor of questions of social organization and ideology. Earlier models relating changes in regional demography to environmental shifts now need revision, as do long-standing studies of seasonal mobility. New research emphasizes instead identification of exchange and alliance networks and patterns of seasonal aggregation and dispersal. However, several of the assumptions of these models remain untested, while dating problems make it difficult to integrate rock art with other components of the archaeological record. Critical use of a more diverse set of ethnographic data, from both within and beyond the Kalahari, is also needed. These points are emphasized in discussing evidence for social and economic intensification between 5000 and 2000 B.P. in several areas of the subcontinent (KwaZulu-Natal, the southern, eastern, and far western Cape). 相似文献
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Indo-Iranian Journal - 相似文献
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ABSTRACT This paper reports evidence on the geographic pattern of income inequality, both within and between neighborhoods, across a sample of 359 U.S. metropolitan areas between 1980 and 2000. The results indicate that overall income inequality within a metro area tends to be driven by variation within neighborhoods, not between them, although we find that between‐neighborhood differences rose dramatically during the 1980s and subsided somewhat during the 1990s. While this trend is similar to what existing research has found, our findings reveal potentially important differences in the magnitudes of the changes depending on whether neighborhoods are defined by block groups or tracts. 相似文献
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Using new provenance studies on stone implements from the Valencia region of Spain between 5500–2000 BC, we show not only the large scale of some exchange systems, but also consider how, and why, tastes and fashions are co-ordinated over much of the Western Mediterranean. The study considers the processes of raw material substitution underlying the observed patterns. These processes operate for a wide range of lithic materials, including rare minerals like variscite and fossil shells for ornaments. Simple gravity models of distribution and exchange predominate at all periods. Our study extends from Portugal to Italy, and indicates that a system of shared symbolic values, of axeheads, beads and bracelets, was in operation. The discussion concludes that consumption patterns were centred on these values rather than functional categories of tools or prestige items. 相似文献
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