共查询到20条相似文献,搜索用时 15 毫秒
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Michael K. Hollar 《Journal of regional science》2011,51(2):231-252
ABSTRACT Theoretical models of urban development come to contradictory conclusions regarding the nature of central city–suburb interdependence. Unfortunately, empirical research into this relationship has been hampered by the lack of identifying information due to the endogeneity of factors affecting both central city and suburban growth. This paper resolves the identification problem by constructing an index that measures price shocks to export industries located in either center cities or their suburbs. The results indicate that positive export industry price shocks to one area have a positive spillover effect on the other. Interestingly, the cross‐elasticity of suburban employment with respect to center city employment (1.18) significantly exceeds the cross‐elasticity of central city employment with respect to suburban employment (0.24). 相似文献
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Yellow goethite (α-FeOOH) and red hematite (α-Fe203) were used as pigments by Palaeolithic painters. When heated, goethite dehydrates and transforms to hematite Archaeologists wonder whether prehistoric people knew of this property and used it. We present a way to distinguish heated goethite from natural hematite. The methods used are X-ray diffraction and transmission electron microscopy. A double ‘signature’, namely selective broadening of diffraction reflections and porous nanostructure, is evidenced in heated goethite. Coupled with mineralogical associations, this allows us to establish a procedure to investigate the natural or artificial origin of hematite samples. Applied to the Palaeolithic site of Troubat, it reveals no difference between the Magdalenian and Azilian cultures concerning the heat-treatment of pigments; an area specializing in heat-treating pigments, may, nevertheless, have existed inside the cave, which would indicate that heating wax deliberate. 相似文献
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ABSTRACT We argue in this paper that neighborhoods are highly relevant for the types of issues at the heart of regional science. First, residential and economic activity takes place in particular locations, and particular neighborhoods. Many attributes of those neighborhood environments matter for this activity, from the physical amenities, to the quality of the public and private services received. Second, those neighborhoods vary in their placement in the larger region and this broader arrangement of neighborhoods is particularly important for location choices, commuting behavior and travel patterns. Third, sorting across these neighborhoods by race and income may well matter for educational and labor market outcomes, important components of a region's overall economic activity. For each of these areas we suggest a series of unanswered questions that would benefit from more attention. Focused on neighborhood characteristics themselves, there are important gaps in our understanding of how neighborhoods change – the causes and the consequences. In terms of the overall pattern of neighborhoods and resulting commuting patterns, this connects directly to current concerns about environmental sustainability and there is much need for research relevant to policy makers. And in terms of segregation and sorting across neighborhoods, work is needed on better spatial measures. In addition, housing market causes and consequences for local economic activity are under researched. We expand on each of these, finishing with some suggestions on how newly available data, with improved spatial identifiers, may enable regional scientists to answer some of these research questions. 相似文献
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ABSTRACT This study investigates how local milieus foster innovation success in firms. We complement the common practice of linking firm performance indicators to regional characteristics with survey evidence on the perceived importance of locational factors. While the former approach assumes that location characteristics affect all firms in the same way, the survey allows us to model how firms judge the attractiveness of locations using a heterogeneous set of criteria. It turns out that the availability of highly skilled labor and the proximity to suppliers matter for firms' innovation performance. Interestingly, location factors obtained from the survey provide a more accurate explanation of how local milieus facilitate innovation. 相似文献
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ABSTRACT It has long been surmised that firms controlled by different countries may have unequal effects on the host economies in which they locate. By looking at the seven major source countries of foreign direct investment (FDI) in the United States, we provide empirical evidence that the state growth effects of FDI differ by source country. We attribute these differential growth effects to the relative differences in factor endowments between the source country and the state. The implication of this result is that technology transfer, believed to be the engine of economic growth, becomes more costly the more dissimilar the endowments. 相似文献
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M. MAGGETTI 《Archaeometry》2005,47(2):389-401
The Alps as a barrier : ceramic remnants of the so‐called Laugen‐Melaun culture (c. 11th to c. sixth centuries bc ) can be found in the northern Italy (Trentino/Alto Adige)—eastern Switzerland—Liechtenstein and western Austria region. A petrographic study of 454 sherds from this area covering a time span of 500 years reveals the following. (1) The pottery from the Trentino/Alto Adige contains a predominantly volcanic temper, which can be linked to the volcanic rocks of the Bolzano area—in other words, to the core region of this culture. This material is therefore of a local/regional production. (2) These ceramics were imported from the Bolzano region to southeastern Switzerland (the Inn Valley) and the amount of imported pottery decreases markedly from the 11th century bc (approximately 70% imported) to the seventh to sixth centuries bc (approximately 10% imported). (3) No imported pottery can be detected north of the Alpine crest in Switzerland, Liechtenstein and Austria, and in this region serpentinite temper was preferred by ancient potters. These results demonstrate that long‐lasting contacts and ceramic trade existed between the populations of the Inn Valley and the Trentino/Alto Adige. Such contacts could have been motivated by intermarriages between the two populations and/or economic exchange. The potters north of the Alpine ridge adopted the Laugen‐Melaun style and produced such pottery locally. The use of serpentinite temper is puzzling and not related to any technological advantage. (Could it be recycled material? Or does it have any sociocultural specificity?) The Alps as a passage : 59 fragments of a black gloss ware, the so‐called Campana, unearthed at 11 Late Latene sites (second to first centuries bc ) in Switzerland and neighbouring Germany were analysed chemically by X‐ray fluorescence. The results revealed: (1) that all of them were produced either in Italy or Lyon and then exported to the north; (2) that two principal south–north exchange routes existed, (a) fluviatile, along the Rhône–Rhine corridor and (b) trans‐Alpine, using the Alpine passes, such as the Simplon and the Grand St Bernard. 相似文献
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DAVID BROWN 《Nations & Nationalism》2008,14(4):768-788
ABSTRACT. Since the consciousness of the ethnic majority frequently develops in the context of the formation of the nation‐state, its tendency to ethnocentrism is thereby inhibited by a commitment to the civic norms associated with the modern state. This gives a potentially benign character to its support for the national integration of ethnic minorities. It is then argued that ethnic majorities can also exhibit a more malign face which has its origin in disillusionment with democracy. The resultant feelings of marginalisation are resolved by the construction of a ressentiment nationalism which reassures the ethnic majority of its virtue and status as the ethnic core, by identifying demonised minorities against which it can mobilise. When this dark face of majoritarian ethnic nationalism is tapped by populist politicians, it sustains violence against ethnic minorities. The argument is illustrated through the example of Thai support for state violence against Muslim demonstrators in Southern Thailand. 相似文献
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Kim Ridealgh 《世界古典文明史杂志》2013,(1):22-40
1. Introduction
The administrative title 'scribe of the necropolis' (ss n p3 hr^1) is a well-known and well-studied aspect of New Kingdom scholarship.2 For the duration of the royal necropolis at Thebes (1550-1069 BCE.), today known as the Valley of the Kings, the scribe of the necropolis was responsible for keeping daily accounts of the work undertaken at the site, and supplying and distributing rations for the general workforce. Other duties are also documented including the delivery of goods and supplies to the village of Deir el-Medina, 相似文献
The administrative title 'scribe of the necropolis' (ss n p3 hr^1) is a well-known and well-studied aspect of New Kingdom scholarship.2 For the duration of the royal necropolis at Thebes (1550-1069 BCE.), today known as the Valley of the Kings, the scribe of the necropolis was responsible for keeping daily accounts of the work undertaken at the site, and supplying and distributing rations for the general workforce. Other duties are also documented including the delivery of goods and supplies to the village of Deir el-Medina, 相似文献
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ENERGY: GOVERNMENT POLICY OR MARKET RESULT? 总被引:1,自引:0,他引:1
Michael D. Reagan 《政策研究杂志》1983,11(3):365-385
From the Truman presidency through that of Carter, the United States worked fitfully toward the development of an energy policy. Now, consistent with the “free market — get government off the backs of the people” philosophy of the Reagan Administration, the 1981 National Energy Policy Plan proposes that “individual choices” and “reliance on market decisions” replace regulations and subsidies in the nation's strategy for energy. This paper starts from the assumption that the Spring, 1982 oil “glut” may turn out to be a rather temporary thing. If one therefore wants to pursue a policy strategy that will protect us in the case of sudden short-term supply disruptions and also work toward long-term energy supply diversification, how far will market reliance carry us? What is a range of policies and programs that might usefully supplement the market? What are the externalities for which compensatory actions may still be needed if one would like to employ the market strategy as a basic thrust? The scope of the paper includes contingency planning, synthetic fuel development, renewables (especially solar energy), conservation, equity issues, environmental externalities, and the conceptualization of policies differentiated as “energy,”“environmental,” or “economic.” 相似文献
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The role of soil-structure interaction (SSI) in the seismic response of structures is reex-plored using recorded motions and theoretical considerations. Firstly, the way current seismic provisions treat SSI effects is briefly discussed. The idealised design spectra of the codes along with the increased fundamental period and effective damping due to SSI lead invariably to reduced forces in the structure. Reality, however, often differs from this view. It is shown that, in certain seismic and soil environments, an increase in the fundamental natural period of a moderately flexible structure due to SSI may have a detrimental effect on the imposed seismic demand. Secondly, a widely used structural model for assessing SSI effects on inelastic bridge piers is examined. Using theoretical arguments and rigorous numerical analyses it is shown that indiscriminate use of ductility concepts and geometric relations may lead to erroneous conclusions in the assessment of seismic performance. Numerical examples are presented which highlight critical issues of the problem. 相似文献
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Bryan D. Jones 《政策研究杂志》1981,9(7):963-971
The literature on the provision and distribution of urban public services has recently stressed the study of impacts rather than outputs. Impacts are conventionally conceived as the final stage of an orderly production process. Benefits are produced only after impacts are achieved. This paper argues, to the contrary, that costs and benefits stem from each stage of the public service production process. Consequently, a focus on the impact stage alone can be grossly misleading. 相似文献
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MARTIN ROBERTSON 《Oxford Journal of Archaeology》1982,1(2):179-186
Summary: A red-figure krater at Port Sunlight presents problems of attribution. Unusual features of the subjects are discussed - Dionysos reclining on a donkey; a youth with a mirror. 相似文献
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One factor that has affected state and local politics since the 1960's is the growth of public sector unionism. Conventional wisdom assumes that the “fist generation” of public unionism has been a major cause of the fiscal problems faced by many state and local governments in the 1970's. State level cross-sectional analysis (1960–71) questions this widely held assumption with respect to the impact of strike activity and collective bargaining legislation on the tax burden across the states. 相似文献