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991.
992.
A Romanesque double-springer and five voussoirs, decorated with foliate carving and pellet, have been reused as a door-head in the ground floor of Church House, Gloucester Cathedral. The carved stones are illustrated, together with a reconstruction of the original double arch, which may have come from an early 12th- century pulpitum screen or the arcade of the first Norman cloister.  相似文献   
993.
The application of complex and nonlinear dynamical systems (NDS) theory in physical geography and geosciences has proceeded through several stages, and has recently entered a phase where field-testable hypotheses and historical or mechanistic explanations are being generated. However, there are some fundamental challenges. It seems clear that chaos and dynamical self-organization are present, and may be common in earth surface systems, and that these phenomena have spatial manifestations in the landscape. However, NDS theory and methods have been formulated primarily in the temporal domain and are typically ill-suited to real-world spatial data. Spatial analytical methods are not generally capable of distinguishing deterministic complexity and uncertainty from noise. Thus, the detection of the signals of complex deterministic dynamics in real landscapes and spatial data is a major challenge. Entropy-based methods of spatial analysis can be directly linked to nonlinear dynamics, and are at present the best available method to approach this problem. However, there is evidence in the spatial analysis literature suggesting that development of techniques to detect deterministic uncertainty is possible. Pending such a break-through, three general approaches are described, based on spatial analysis of chronosequences, the characteriziation of changes in spatial structure over time, and the spatial-domain testing of specific hypotheses relevant to deterministic uncertainty. Current trends generally suggest a shift in mathematical modeling and spatial analysis in physical geography away from traditional determinism toward approaches that incorporate locational, historical, and scale contingency.  相似文献   
994.
Virtually every locality affected by the AIDS epidemic has had to confront changes in the demographics of the disease, shifts in federal priorities, and medical advances in AIDS treatment. Creating a consistent federal policy has proven difficult because the epidemic manifests itself differently in virtually every locality it invades. As a result, some local caseloads increasingly are dominated by intravenous drug users and others by gay men. In recognition of this reality, the primary federal program to fund AIDS services relies on local decisionmakers to make allocation decisions for serving the needs of their caseload. Under the Ryan White Comprehensive AIDS Resources Emergency (CARE) Act of 1990, local Health Services Planning Councils were assigned the task of creating an effective continuum of care for persons with HIV I AIDS and were empowered with the task of allocating federal funds to accomplish that objective. In some cases creating and fostering an effective continuum of care proved to be an essentially noncontroversial managerial task, while in other localities political turmoil and rampant self-interest served as barriers to program effectiveness. This article explores the relationship between local political culture and the development of AIDS programs in Dallas County, Texas. Specifically, we compare the provision of AIDS services in Dallas before passage of the Ryan White Act in 1990, how these services were affected by the Ryan White program, and the experiences since the reauthorization of the Ryan White Act in 1996.  相似文献   
995.
In this paper we construct exchange rate indexes for the nine U.S. Bureau of the Census regions. The results indicate there are nontrivial differences between them and an identically created overall U.S. exchange rate index. The national index is cointegrated with only two of these regional indexes, and in a Granger sense, it is causing one regional index. In addition, our results indicate that two of the regional exchange rate indexes are interchangeable with the national index. These results show that researchers investigating how exchange rate changes affect regional exports or regional economic growth should be cautious in making inferences based upon a national exchange rate index.  相似文献   
996.
997.
True GRIT     
Book reviewed in this article:
Deborah Welch Larson, Anatomy of Mistrust: U.S.-Soviet Relations during the Cold War  相似文献   
998.
The City of Chicago and the inner suburbs grew much more slowly than the outer suburbs in recent decades. In the central county of the metropolitan area, commercial and industrial property is "classified," in that it is assessed at a higher ratio of market value than residential property. Classification is not used in the surrounding suburban counties. The empirical analysis finds evidence consistent with the notion that property tax classification contributes to differential rates of economic growth. High property tax rates lead to significantly slower growth rates for employment, commercial property, and industrial property.  相似文献   
999.
A model of culture as a partially coherent system of signs comprised the most widely employed instrument for analyzing cultural meaning among the new cultural historians. However, the model failed to account for meanings that agents produce by executing social practices rather than by only "reading" contrasts among signs. It also encouraged some analysts to conceive the difference between sign system and concrete practice as that between what is graspable as an intellectual form and what remains inaccessibly material or corporeal. This essay introduces three exemplars of the ties between signs and practices to show how the pragmatics of using signs comprises a structure and a generator of meaning in its own right. In the three exemplars, which are based on the tropes of metonymy, metaphor, and irony, I employ the analytic tools of linguistics to appreciate the non-discursive organization of practice. Analysis of the diverse logics for organizing practice offers promising means for investigating how signs come to seem experientially real for their users. Finally, this view of culture in practice suggests new hypotheses about the possible interdependencies as well as the lack of connection among the elements of a cultural setting.  相似文献   
1000.
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