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61.
62.
Philip Freeman 《The Historian; a journal of history》2009,71(2):416-416
63.
Ruth M.K. Plets Justin K. Dix Jon R. Adams Jonathan M. Bull Timothy J. Henstock Martin Gutowski Angus I. Best 《Journal of archaeological science》2009
The remains of Henry V's flagship, the Grace Dieu, currently lie buried within the inter-tidal sediments of the River Hamble (S. England). Previous archaeological investigations have been hindered by difficult excavation conditions resulting in a poor understanding of the dimensions, shape and degradation state of the hull's deeper structure. This study therefore aimed to image, characterize and reconstruct the buried remains of this vessel using a high-resolution 3D acoustic sub-bottom Chirp system with RTK-GPS positioning capability. The accurate navigation and high-resolution data that were acquired enabled the construction of a full 3D image of the site that not only identified the remains of the wooden hull, but also features buried within it. In addition, the degradation state of these buried wooden remains were investigated by calculating reflection coefficients while a hypothetical larger reconstruction of the Grace Dieu's hull was achieved, through the use of the ShipShape ship design software package. 相似文献
64.
Philip Cooke 《European Planning Studies》2012,20(8):1415-1424
This short briefing paper addresses the next stage in the evolution of regional development policy. It is clear that the cluster idea has held sway in this field for some 20 years. By now, practitioners and academics are widely sceptical of policy capabilities to create let alone build clusters. Recessionary times make this more difficult. Moreover, where some recent success can be seen, it is associated with command economies such as China where normal market and democratic barriers to large public investments in such measures are absent. Nevertheless, clusters exist in many places and there is evidence, displayed in this paper, that in some regions they have mutated into multi-cluster platforms. Now, as regions seek to rebalance, platform policies are evolving and being implemented. This paper shows how this is in part a response to “Grand Challenges” and the emergence of “challenge-driven” innovation. 相似文献
65.
66.
Archaeological predictive modeling has been used successfully for over 20 years as a decision-making tool in cultural resources
management. Its appreciation in academic circles however has been mixed because of its perceived theoretical poverty. In this
paper, we discuss the issue of integrating current archaeological theoretical approaches and predictive modeling. We suggest
a methodology for doing so based on cognitive archaeology, middle range theory, and paleoeconomic modeling. We also discuss
the problems associated with testing predictive models. 相似文献
67.
ABSTRACT The headcount ratio in Chile has declined from 40 percent to 14 percent since 1987. However, most analysis of this reduction uses national and regional poverty statistics. In contrast, we employ poverty mapping methodologies to find heterogeneity in the effectiveness of transfers across counties. To better understand this variation, we explore the roles of characteristics of the local population, structural features of the county, and geography. The greatest reductions in poverty occur in rural households, yet population characteristics and geography are also important. These findings suggest that targeting at low levels of aggregation can deliver further reductions in poverty. 相似文献
68.
69.
In this paper, we explore regional innovation in the use of varieties of algae as inputs to industrial processes. It is important to understand that algae are one of nature's most bountiful products, with an almost infinite variety of applications. Algae have received prominence in the research literature because of the strong evidence that they can make a major contribution to the production and—importantly—storage of renewable energy. Following the introduction to this paper, Section 2 reviews the nature and application of algae in two main aspects of clean energy production: first as biogasolene or biodiesel; second as large-scale storage batteries for electricity. The latter is particularly important as one classic deficiency of electricity is the difficulty in storing it for lengthy periods other than in short-life batteries. However (Section 3), there are other uses for algae, ranging from aquaculture to medicine and the production of cosmetics. In the southwest corner of the Iberian Peninsula, between Faro in Portugal through Huelva to Cadiz in Spain, is a significant research and commercial algae production zone. The paper describes the key system elements in play in this trans-border innovation network and considers prospects for new path creation towards biofuels, the main research and application centres for which are in the San Francisco Bay Area in California. Conclusions and recommendations for policy action are then drawn. 相似文献
70.
Philip R. Pryde 《Eurasian Geography and Economics》2013,54(6):555-567
A set of contemporary and increasingly urgent environmental problems in the USSR are surveyed, emerging as a result of continued development and technological change and mandating, in effect, a new environmental agenda. Analysis of specific problems reveals ways in which the new agenda must differ from the old: it must be more ecologically based, more comprehensive, and more global in scope. A concluding section examines how this agenda appears to be evolving over time, and identifies components which will be essential in order for it to effectively address the environmental challenges of the next century. 相似文献