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Phrygian Gordion was the political center of an influential Iron Age polity that extended across west central Anatolia during the first half of the 1st millennium BC. Though the borders of this polity remain vague a characteristic of the Phrygian “footprint” is the distribution of highly distinctive ceramics. The extent to which Gordion potters were the originators of these wares remains uncertain. In this paper we use Neutron Activation Analysis (NAA) to establish the local signature of predominantly Iron Age ceramics for this site by combining samples from several decades of excavation with an extensive regional sediment sequence. We also compare previous NAA work at Gordion to suggest that the formative stages of the Phrygian state appears to have involved a more extensive network of non-local specialist producers than previously thought.  相似文献   
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Infective lesions of bone in leprosy are of two types. In the rhinomaxillary syndrome, superficial infective changes in the bones of the maxilla are due to the presence of Mycobacterium leprae. Lytic foci in the medulla or the outer cortical surface may be due to Mycobacterium leprae at the site as granulomatous lesions. The most frequent infective bone changes in leprosy are, however, sequelae of regional anaesthesia and soft tissue ulceration. The bone lesions are due to pyogenic bacteria and the nature of these infective lesions is similar to that in non-leprous conditions. The pyogenic lesions in leprosy are restricted to the bones of the hands, feet and lower legs.  相似文献   
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A renewed interest in the spatial clustering or agglomeration of economic activity is evident within economic geography and related fields. This paper considers processes of change within 'mature' regional clusters, developing a conceptual framework which links firm-level strategies to development scenarios at the cluster level through a set of intervening mechanisms. Whange, enabling the cluster to sustain its prosperity, and adjustment which is associated with stagnation and gradual decline. This conceptual framework is applied to an analysis of one key mechanism of change, diversification, as pursued by small and medium-sized enterprises (SMEs) in the Aberdeen oil cluster. Our analysis indicates that some diversification is occurring, with the implications for the cluster lying midway between adjustment and renewal. In conclusion, we emphasize the need to assess and 'unpack' the clusters concept and suggest that research should focus on the relationships between proximity, learning and evolution.  相似文献   
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This research uses an alternative economic composition methodology that classifies 52 Idaho rural communities. This methodology classifies communities as dependent, diversified, or post-industrial. A survey was mailed to elected officials (mayors and city council) from the sample of 52 rural communities to examine whether there is a relationship between environmental policy support and economic type. One hundred and thirty-three respondents (48%) returned the surveys. The findings reveal that the economic composition of the community was related to views of environmental policy on 7 of 16 measures while controlling for gender, political ideology, and age.  相似文献   
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