Recent developments in the field of urban analysis and management are investigated in this book. It is a wide-ranging collection of essays on the subject drawn from a long-term project and seminar, held in Italy, to review the state of the art and speculate on the future influence on the "sciences of the city" of the complexity concept. Of particular interest is the variety of points of view, often contrasting, and the attempt to go beyond the conventional approaches to the analysis, and the planning of the city. While focussing mainly on the European (and in particular Italian) context, the discussion is of general relevance and valuable to anyone concerned with the prospects for the city in the new millenium.

The pressures of global competition are affecting regions throughout the world and making it increasingly necessary to understand the complex underlying mechanisms and the potential for innovation offered by new technology. Success in economic restructuring depends not only on the technology itself, but the professional and entrepreneurial skills available and the support of provided by institutions and information networks. The very local nature these phenomena, which are critical to the innovative propensity of firms operating within the region, introduces an inevitable spatial dimension. The time therefore seems ripe to bring together contributions from scholars working in different, but related disciplines, with the aim of investigating the triangular relationship between technological change, economic development and space. The present volume offers a compact review of current theoretical developments and valuable insights deriving from recent empirical studies carried out both within Europe and elsewhere. All those contributing to this volume are actively involved in research in the field. Without their intellectual contribution and willingness to participate in this joint project, the book would not have been possible. We should like, in addition, to thank Angela Spence for her capable assistance in coordinating the various stages of preparation of the book, as well as her translation work and careful linguistic editing. Thanks also go to Paola Stasi for her meticulous copy editing and help in preparing the indices. Their work has been invaluable in moulding together in a single volume contributions from so many different sources.

In the past decade there has been growing recognition that economic development is not mainly exogenously determined but, to a large extent, is a transformation process induced and governed by economic actors who respond to competitive, institutional and political challenge. This 'challenge and response' model is increasingly accepted as a valid analytical framework in modem growth theory and also explains the popularity of endogenous growth approaches to technological innovation issues. However, a major and as yet largely under-researched topic is the question of the diffusion and adoption of new technological changes in the context of space-time dynamics. This diffusion and adoption pattern has obviously clear spatial and temporal variations connected with behavioural responses which may vary over time and different locations. This means that a closer analysis of spatio-temporal opportunities and impediments is necessary in order to fully map the complex interactions of technology and economy in space and time. This volume sets out to bring together a collection of original contributions commissioned by the editors to highlight the spatio-temporal patterns and backgrounds of the diffusion and adoption of new technologies. Some are in the nature of a survey, others.have a modelling background and again others are case studies. The contributions originate from different countries and different disciplines. This book is complementary to a previously published volume on technological innovation, Technological Change, Economic Development and Space, edited by C.S. Bertuglia, M.M. Fischer and G. Preto, and also published by Springer-Verlag (1995).