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The discourse over federal versus state jurisdiction was ingrained into American politics at the nation's inception. It has been the premise of our most historically significant rivalries—between Thomas Jefferson and Alexander Hamilton, Andrew Jackson and Henry Clay, and Daniel Webster and Robert Hayne. Though this debate remains a contentious topic in contemporary political discourse, the U.S. Supreme Court settled the legal controversy on the eve of America's bloodiest conflagration. Unanimously, the Court ruled that the federal union was of greater importance than the authority of the individual states. The 1859 Ableman v. Booth 1 decision was wrought from moral controversy, legal precedent, and political necessity, coupled with the full force of law, and has endured as a compelling pronouncement on the need for continuity and stability in uncertain times.  相似文献   
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The importance of understanding the livelihood strategies of poor people has received a fresh impetus over the last few years with the emphasis by many Western donors on poverty reduction. This article examines the livelihood strategies of San people in three villages on the northern peripheries of the Okavango Delta in Botswana. Their economic marginalization is compounded by their ethnic background; a stigma that also marginalizes them politically and socially. The analysis presented here not only challenges stereotypes commonly associated with San by demonstrating the interconnectedness of different means of ‘looking for life’, but it also brings to the fore the importance of considering institutional factors that regulate livelihood strategies. The article focuses on some of the unexpected consequences of the wider policy environment, and on how the values associated with different ways of life affect material subsistence strategies. These are particularly pronounced for people with a heritage of hunting and gathering living in a society that regards such practices as ‘backward’.  相似文献   
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During excavations at Hengistbury Head between 1979 and 1984 certain Late Iron Age features, described as 'quarry hollows' and 'scoops', were discovered along the shoreline. They are the result of gravel extraction, which, it is argued, was carried out in order to supply ballast for ships plying their trade across the English Channel during the first half of the first century BC. Accordingly, these features represent the first on-shore archaeological evidence for the provision of ballast in antiquity.  相似文献   
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The past thirty years have seen major shifts and improvements in manufacturing productivity, bringing greater output but fewer jobs. As a result, manufacturing is now less visible in "post-industrial" societies. Nevertheless, manufacturing still matters in developed market economies but our understanding of manufacturing has failed to evolve with developments in the management and organization of production processes. This paper explores the lock industry in the West Midlands (UK), a traditional low-tech manufacturing sector. West Midlands lock companies that produced standardized, mass-produced products have experienced intensive competition from low-cost producers. Many of these firms have downsized their operations in the UK. Nevertheless, this is only one response to intensified competition. Lock firms located in the West Midlands are unable to compete on price and have shifted away from the production of mass-produced locks to concentrate on high value-added niche markets. The firms have developed inimitability strategies based around design, expertise, specialization, customization and nearness to market that assist them in maintaining their revenue and profit streams. Niche manufacturers have been far less susceptible and relatively immune to foreign competition and they continue to diversify product ranges by targeting specialist end-users. The emphasis is on producing high-quality locks in small batches that can be produced just-in-time to meet customers' requirements. The continued survival of these lock firms is based upon a strategy that includes the development of product-based competitive advantage combined with locational advantage and supported by efficient, responsive and customer-focused manufacturing processes.  相似文献   
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