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The towns of Roman Britain have been subject to a long tradition of empirical research and discussion, but far less attention has been paid to the landscape context in which they developed. This paper considers the implications of this caveat for our understanding of Roman urbanism and suggests that most previous approaches have internalized the study of towns as social institutions and have failed to give due weight to the role of local rural agency in influencing the character of urban development. In so doing, it is suggested that the potential role of other important and competing nodes of economic, political and religious life, such as forts, fortresses, vici and small towns as well as rural sanctuaries and other settlements, is also not given due consideration in discussing the distinctive character of urbanism in Roman Britain.  相似文献   
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Abstract

This paper explores the sources of invention and innovation in steam shipping, the distribution of funding and risk between the state and the private sector, and the Royal Navy's management of innovation, during the experimental period of steam power's adoption at sea. It identifies two intersecting channels through which steam‐related innovations reached the Royal Navy. First, “packages” of innovations were embedded in the marine engines that were commissioned by the Navy from private engine‐making firms. Secondly, the Navy was spontaneously offered a gamut of ideas and inventions, which varied enormously both in potential importance and in degree of development. Although the mechanisms for dealing with these two channels were different, the end result was much the same ‐ in minimizing both the expense and the risk borne by the public sector. It was principally the private sector that was funding scientific and technological development in this sphere. Recognizing its own lack of expertise and consequent hazard, the Navy Board was developing a systematic yet flexible method of assessing steam‐related inventions ‐ which appears to have served it well.  相似文献   
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