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31.
An examination of the surface deposit of an Etruscan cup said to have been dug up in Cheshire suggests instead that it had been buried in Italy and brought to England in recent times. The method described here might usefully be employed to assess the provenance of buried artefacts. 相似文献
32.
ABSTRACT. Average monthly price data from twelve hinterland markets and the Houston port price for wheat are studied in a cointegration framework using the Engle-Granger "two-step" procedure and Johansen's maximum likelihood procedure. Out-of-sample forecasts from an error correction model are compared to those from a vector autoregression fit to levels and a univariate autoregression fit to first differences. This comparison suggests that modeling these (cointegrated) data as a levels vector autoregression, rather than as an error-correction process, results in significantly higher error bias, but lower error variance, at long horizons. 相似文献
33.
Stephen J. Shennan 《Journal of World Prehistory》1993,7(2):121-161
The chronology of the period is briefly considered in the light of the dendrochronological results which have appeared in recent years. Patterns of settlement history in different parts of the area are then examined, and it is suggested that in some of them the late fourth millennium was a period of population decline which was not reversed until the Early Bronze Age, 1000 years later. Detailed information about specific local occupation patterns is provided by recent work on the circum-Alpine lake villages. Changes in cultural patterns during the period, especially the appearance of the Corded Ware, are discussed and explanations of them reviewed. It is argued that changing patterns of gender relations were a major feature of the period, linked to processes which eventually led to the development of small-scale chiefdoms. The development of copper and bronze metallurgy and its connection to these processes are discussed. 相似文献
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Malcolm K. Hughes Stephen J. Milsom Patricia A. Leggett 《Journal of archaeological science》1981,8(4):381-390
Many timber finds lack some or all of the outer, sapwood rings formed in the years just before felling. In order to estimate felling date once the outermost remaining ring has been dated, it is necessary to estimate the number of sapwood rings originally present. Methods doing this for oak are reviewed in the light of an intensive study of living trees at one site and an extensive study of 175 samples from living trees in North Wales and northwest England. Some methods reported in the literature are found to be invalid. A method reported by Hollstein (1965) is most reliable, with modifications for known variations in sapwood number with position in the tree. At present the best available estimate is that a value of 30 sapwood rings be used (95% confidence limits: 19–50). 相似文献
37.
Allen V. Kneese and F. Lee Brown, The Southwest Under Stress .
Richard A. Berk, et al., Water Shortage . 相似文献
Richard A. Berk, et al., Water Shortage . 相似文献
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"Accommodation of a multi-ethnic population within the territory of a single state has been recognized as a world-wide problem. Within such a society language maintenance is frequently the avenue through which cultural groups seek to preserve their identity. This paper describes and evaluates the Canadian experience of language planning by concentrating on the bilingual district, the key spatial instrument in the federal Official Languages Act. The paper argues for a cautious and spatially varied application of the 1969 Act and seeks to suggest ways in which a geolinguistic analysis may further our understanding of plurilingual societies." 相似文献
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