Practical Low Power Digital VLSI Design emphasizes the optimization and trade-off techniques that involve power dissipation, in the hope that the readers are better prepared the next time they are presented with a low power design problem. The book highlights the basic principles, methodologies and techniques that are common to most CMOS digital designs. The advantages and disadvantages of a particular low power technique are discussed. Besides the classical area-performance trade-off, the impact to design cycle time, complexity, risk, testability and reusability are discussed. The wide impacts to all aspects of design are what make low power problems challenging and interesting. Heavy emphasis is given to top-down structured design style, with occasional coverage in the semicustom design methodology. The examples and design techniques cited have been known to be applied to production scale designs or laboratory settings. The goal of Practical Low Power Digital VLSI Design is to permit the readers to practice the low power techniques using current generation design style and process technology.

The Working Group "0ffshore Nuclear Power Plants" was established by the Commission of the European Communities in 1971. At that time it appeared that the option offered by creating new sites offshore should be explored. The present development of nuclear power has not, however, reached the stage where offs hore siting can be considered as a near or medium term proposition. The purpose of this report is to summarize the state of the art for the provision of floating or fixed structures, or man-made islands of the size needed for the construction of nuclear and other power stations. It describes the main factors which must be taken into account in the design and location of such islands and provides an indication of feasibility and cost for each design at the present time. It deals mainly with the civil engineering problems and not other major factors, such as the law of the sea, the rights of countries to locate nuclear establishments off their coast, their safety, security, the energy connection with the mainland, the marine ecology, the logistics, etc. ; many of these problems are directly related to the site and have major economic and political implications. By studying application examples the Working Group has occupied itself with these other factors.

Historical archaeology, one of the fastest growing of archaeology’s sub fields in North America, has developed more slowly in Central and p- ticularly South America. Happily, this circumstance is ending as a gr- ing number of recent projects are successfully integrating textual and material culture data in studies of the events and processes of the last 500 years. This interval and this region–often called Ibero-America–have been studied for a century or more by historians with traditional perspectives and emphases focusing on colonial elites and large-scale politico-economic events. Such inclinations fit well into world-system and other core-peri- ery models that have had a major impact on historical thought since the 1970s. Over the past 20 years or so, however, world-system models have come under fire from historians, anthropologists, and others, in part because the emphasis on global trends and the growth of capitalism - nies the importance of understanding variability in local histories and circumstances. Historians have increasingly turned their attention to lo cal, rural, and domestic contexts, thereby illuminating the great diversity of responses to colonial domination that were played out in the vast arena of the Americas. It is not coincidental that this is the intellectual climate in which historical archaeology is establishing itself in Central and South America.