A new, revised edition of a yet unrivaled work on frequency domain analysis

Long recognized for his unique focus on frequency domain methods for the analysis of time series data as well as for his applied, easy-to-understand approach, Peter Bloomfield brings his well-known 1976 work thoroughly up to date. With a minimum of mathematics and an engaging, highly rewarding style, Bloomfield provides in-depth discussions of harmonic regression, harmonic analysis, complex demodulation, and spectrum analysis. All methods are clearly illustrated using examples of specific data sets, while ample exercises acquaint readers with Fourier analysis and its applications. The Second Edition:
* Devotes an entire chapter to complex demodulation
* Treats harmonic regression in two separate chapters
* Features a more succinct discussion of the fast Fourier transform
* Uses S-PLUS commands (replacing FORTRAN) to accommodate programming needs and graphic flexibility
* Includes Web addresses for all time series data used in the examples

An invaluable reference for statisticians seeking to expand their understanding of frequency domain methods, Fourier Analysis of Time Series, Second Edition also provides easy access to sophisticated statistical tools for scientists and professionals in such areas as atmospheric science, oceanography, climatology, and biology.

Originally published in 1987 when Artificial Intelligence (AI) was one of the most hotly debated subjects of the moment; there was widespread feeling that it was a field whose 'time had come', that intelligent machines lay 'just around the corner'. Moreover, with the onset of the revolution in information technology and the proclamation from all corners that we were moving into an 'information society', developments in AI and advanced computing were seen in many countries as having both strategic and economic importance. Yet, aside from the glare of publicity that tends to surround new scientific ideas or technologies, it must be remembered that AI was a relative newcomer among the sciences; that it had often been the subject of bitter controversy; and that though it had been promising to create intelligent machines for some 40 years prior to publication, many believe that it had actually displayed very little substantive progress. With this background in mind, the aim of this collection of essays was to take a novel look at AI. Rather than following the path of old well-trodden arguments about definitions of intelligence or the status of computer chess programs, the objective was to bring new perspectives to the subject in order to present it in a different light. Indeed, instead of simply adding to the endless wrangling 'for' and 'against' AI, the source of such divisions is made a topic for analysis in its own right. Drawing on ideas from the philosophy and sociology of scientific knowledge, this collection therefore broke new ground. Moreover, although a great deal had been written about the social and cultural impact of AI, little had been said of the culture of AI scientists themselves - including their discourse and style of thought, as well as the choices, judgements, negotiations and competitive struggles for resources that had shaped the genesis and development of the paradigmatic structure of their discipline at the time. Yet, sociologists of science have demonstrated that the analysis of factors such as these is a necessary part of understanding the development of scientific knowledge. Hence, it was hoped that this collection would help to redress the imbalance and provide a broader and more interesting picture of AI.

This book is concerned with the ways in which organizations design, build and use information technology systems. In particular it looks at the interaction between these IT-centred activities and the broader management processes within organizations. The authors adopt a critical social science perspective on these issues, and are primarily concerned with advancing theoretical debates on how best to understand the related processes of technological and organizational change. To this end, the book examines and deploys recent work on power/knowledge, actor-network theory and critical organization theory. The result is an account of the nature and significance of information systems in organizations which is an alternative perspective to pragmatic and recipe-based approaches to this topic which dominate much contemporary management literature on IT. This book is intended for academic: Management and social science academics and postgraduate students of IT strategy and organization. Practitioner: Senior managers concerned with IT and strategy issues.

Least squares is probably the best known method for fitting linear models and by far the most widely used. Surprisingly, the discrete L 1 analogue, least absolute deviations (LAD) seems to have been considered first. Possibly the LAD criterion was forced into the background because of the com putational difficulties associated with it. Recently there has been a resurgence of interest in LAD. It was spurred on by work that has resulted in efficient al gorithms for obtaining LAD fits. Another stimulus came from robust statistics. LAD estimates resist undue effects from a feyv, large errors. Therefore. in addition to being robust, they also make good starting points for other iterative, robust procedures. The LAD criterion has great utility. LAD fits are optimal for linear regressions where the errors are double exponential. However they also have excellent properties well outside this narrow context. In addition they are useful in other linear situations such as time series and multivariate data analysis. Finally, LAD fitting embodies a set of ideas that is important in linear optimization theory and numerical analysis. viii PREFACE In this monograph we will present a unified treatment of the role of LAD techniques in several domains. Some of the material has appeared in recent journal papers and some of it is new. This presentation is organized in the following way. There are three parts, one for Theory, one for Applicatior.s and one for Algorithms."

Originally published in 1987 when Artificial Intelligence (AI) was one of the most hotly debated subjects of the moment; there was widespread feeling that it was a field whose 'time had come', that intelligent machines lay 'just around the corner'. Moreover, with the onset of the revolution in information technology and the proclamation from all corners that we were moving into an 'information society', developments in AI and advanced computing were seen in many countries as having both strategic and economic importance. Yet, aside from the glare of publicity that tends to surround new scientific ideas or technologies, it must be remembered that AI was a relative newcomer among the sciences; that it had often been the subject of bitter controversy; and that though it had been promising to create intelligent machines for some 40 years prior to publication, many believe that it had actually displayed very little substantive progress. With this background in mind, the aim of this collection of essays was to take a novel look at AI. Rather than following the path of old well-trodden arguments about definitions of intelligence or the status of computer chess programs, the objective was to bring new perspectives to the subject in order to present it in a different light. Indeed, instead of simply adding to the endless wrangling 'for' and 'against' AI, the source of such divisions is made a topic for analysis in its own right. Drawing on ideas from the philosophy and sociology of scientific knowledge, this collection therefore broke new ground. Moreover, although a great deal had been written about the social and cultural impact of AI, little had been said of the culture of AI scientists themselves - including their discourse and style of thought, as well as the choices, judgements, negotiations and competitive struggles for resources that had shaped the genesis and development of the paradigmatic structure of their discipline at the time. Yet, sociologists of science have demonstrated that the analysis of factors such as these is a necessary part of understanding the development of scientific knowledge. Hence, it was hoped that this collection would help to redress the imbalance and provide a broader and more interesting picture of AI.

This is a book about IT in organizations how it works, how it changes organization and the problems and challenges it creates. Based on detailed research in several sectors (financial services, hospitals etc.) the authors present an up to date analysis of current issues. The book is divided into three main sections: Strategies and Markets; Integrating Technology and Organization; and Networks.

Prospects for Peacemaking provides a genuinely fresh look at embedded assumptions about national security. It clears the way for a security policy based less on outmoded premises and more on a purposeful strategy for peace in a nuclear world. And it demonstrates one model of a creative interaction between citizens and specialists, one that can be replicated in any community."To the village square must go the essential facts about atomic weapons," Albert Einstein wrote in 1946. "From there must come America's voice." The seven essays in Prospects for Peacemaking take up Einstein's challenge - even more urgent today - by demystifying the criti cal issues of war, peace, and national security and opening the way for informed citizen involvement in these issues.The opening chapter explains why we are currently at a good point for engaging in the process of rethinking American strategic policy. Those that follow outline the basic premises of the current relations between the United States and the Soviet Union; the way the military thinks about arms and arms control; the question of whether negotiations can ever keep up with technology; the European perspective on arms control; and the special problem of managing crisis situations. The book concludes with an essay by Dean Rusk on diplomacy in the nuclear era.Prospects for Peacemaking grew out of "the Minnesota experiment," an extraordinary year long process of dialogue between experts in the arms-control community and public citizens, sponsored by the University of Minnesota's Hubert H. Humphrey Institute of Public Affairs. Harlan Cleveland is Professor of Public Affairs and Dean of the Institute. Lincoln P. Bloomfield is Professor of Political Science at MIT, and an adjunct professor at the Humphrey Institute.