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This paper examines changes in the location of ore-based steel-makingcapacity in the U.S. over the period 1974 to 1991 using data on each of the 45 ore-based mills that were in operation in 1974. We find that the geographic ddistributions of demand and of competition from minimills and imports were important in determining where capacity reductions occurred and which plants were closed. Technology in use at the plant also affected capacity adjustment. However, we find that regional variation in prices of raw materials were notimportant factors in determining where steel-making capacity was reduced. 相似文献
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Günter Frank 《Berichte zur Wissenschaftsgeschichte》2003,26(2):89-100
This paper presents a general view over the second reception of Aristotle's writings beginning after the first invasion of Western crusaders in Constantinople in 1204 and enforced after the fall of the Byzantine capital in 1453. After the turn of the century we observe a widespread commentary tradition of Aristotle's writings, particularily of his Ethics and Politics. Philipp Melanchthon became the leading figure in these ethical and political discussions. More than 53 of his works relating this which were printed within the 16th century are known. 相似文献
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Frédérique Valentin Hallie R. Buckley Estelle Herrscher Rebecca Kinaston Stuart Bedford Matthew Spriggs Stuart Hawkins Ken Neal 《Journal of archaeological science》2010
The subsistence strategies of the Lapita populations (3100–2800 BP), the first colonisers of the pristine environments of the islands of Eastern Melanesia and Western Polynesia, have been a matter of ongoing debate for decades. Opinions have ranged between the two extremes of Lapita colonisers being either characterised as highly mobile foragers to fully horticultural communities. To further address the question, this paper presents stable carbon and nitrogen isotopic data obtained from analyses of human and animal collagen samples from the site of Teouma (Efate, Vanuatu) dated to between c. 3000–2500 BP. The isotopic signatures obtained from 28 samples (23 human and 5 animal), interpreted in combination with isotopic information from several coastal and insular environments, suggest a diet primarily made up of terrestrially derived animal protein with lesser contributions from vegetable produce and inshore marine species. Comparisons linking the isotopic data gleaned from the Teouma individuals and Lapita subsistence patterns reconstructed through archaeozoological and archaeobotanical remains support the hypothesis of a mixed economy, that included terrestrial foraging, inshore marine exploitation and a low level of food production for at least some of the earliest Lapita colonists in Vanuatu. 相似文献