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C. N. Duckworth R. Córdoba de la Llave E. W. Faber D. J. Govantes Edwards J. Henderson 《Archaeometry》2015,57(1):27-50
Twenty‐six samples from domestic assemblages of 9th–12th century Córdoba were subjected to electron microprobe analysis. The results reveal two main compositional types. The first, encountered in 13 of the samples, seems to result from the combination of plant ashes with high‐impurity sand, and has some contemporary parallels from Syria and Egypt. The second type is a lead–soda–silica glass, encountered in a relatively high proportion of the glasses (11 of the 26 sampled), possibly formed by the addition of lead metal to existing glasses and with very few known parallels. These are among a very small number of results available to date on the chemical composition of glasses from medieval Spain, and the presence of a high proportion of lead–soda–silica glasses is particularly interesting, possibly indicating a technological practice unique to, or originating in, the western Muslim world. 相似文献
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THE EFFECT OF ACCESSIBILITY ON PRODUCTIVITY IN SPANISH MANUFACTURING FIRMS 总被引:1,自引:0,他引:1 下载免费PDF全文
David Martín‐Barroso Juan A. Núñez‐Serrano Francisco J. Velázquez 《Journal of regional science》2015,55(5):708-735
This paper evaluates the impact of accessibility on the productivity of Spanish manufacturing firms. We suggest the use of accessibility indicators of workers and commodities, integrating transport, land use, and individual components, computing real distances or traveling times using the Spanish full road network. Estimated firms’ total factor productivity is explained as a function of the accessibility indicators and additional control variables. Results evidence the crucial role on firms’ productivity to the accessibility of commodities and to a slightly lesser extent the workers. 相似文献
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Performance Goal Achievement in Fiscal Federalism: The Influence of State Partisan Environments and Regulatory Regimes 下载免费PDF全文
Jessica N. Terman 《政策研究杂志》2015,43(3):333-354
With tight budgets and hyper‐partisan interactions within and between the states and federal government, attention is being paid to the implementation of federal programs. This is particularly important because, as the recently implemented American Recovery and Reinvestment Act suggests, state administrators are often the implementers of federal policy. This study integrates the fiscal federalism literature with that on implementation and bureaucratic response to examine the effect that within‐state factors have on the degree of performance goal achievement in federally funded, state implemented programs. The findings suggest that, when implementing federal programs, state administrators face conflicting political incentive structures and policy‐specific capacity and capability deficits that influence their motivation and ability to achieve performance goals. 相似文献
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日本史学中“近世”一词,出现于江户时代,原是当时人自指,即“最近时代”之义。明治维新之后,“近世”所指时代仍为江户时代,其涵义则与近代对立,以至于被归入中世"第二次世界大战后史学的发展使近世得以脱离中世范畴,被视为一个独立时代概念。而在地域研究和近代化论兴起的背景下,近世与当代的关系得到强调,近世的内涵又出现了“最近时代”的意味。“近世”概念出现至今,经历了变义、独立而回归的过程" 相似文献
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Recent developments in evolutionary psychology expanding on signaling theory provide key insights to the connections between expressing social commitments and resource rights. Credibility enhancing displays (CREDs) are a means to convince individuals of commitment to belief systems and can link costly acts or extravagant displays to social success. In the Salish Sea, the transition from labrets to cranial modification from 3200 to 1000 BP has often been framed in terms reflecting a shift from achieved to ascribed social status. Other researchers have argued that labrets may reflect village scale identity not tied to political power. We suggest that an explicitly evolutionary approach provides novel insights into the changing material expressions of Coast Salish social commitments, specifically reciprocal resource access. The shift to cranial modification reflects increased CRED investment and cost, but not necessarily a transition towards ascribed status. Instead this shift may be changing expressions of the same forms of social commitments. 相似文献
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