" . . . bangs have replaced whimpers and the geological record has become much more exciting than it was thought to be. " Derek Ager (1993) The New Catastro phism. Cambridge University Press, Cambridge, p xix Scientific and public interest in asteroids, comets, and meteorite impacts has never been more intense than right now. Much of this interest stems from the fervent debates surrounding the causes of the Cretaceous-Tertiary mass extinctions and their possible relationships to a giant bolide impact in Mexico's Yucatan Penin sula. Recent spectacular impacts on Jupiter, and several near misses of our own planet by Near-Earth Objects have intensified professional and popular discussion of society's imperative need to understand the process and effects of bolide im pacts. In the United States, the scientific community and the public, as well, were startled to learn, in 1994, that the largest impact structure in this country had been detected beneath Virginia's portion of the Chesapeake Bay. Seismic surveys and deep coring revealed a huge crater, 85 kilometers in diameter and more than a kilometer deep, stretching from Yorktown, Virginia, to 15 kilometers out onto the shallow continental shelf. Several of Virginia's major population centers, includ ing Norfolk, Hampton, and Newport News, are located on the western rim of the crater, and still experience residual effects of the original collision, 36 million years after the impact took place. Exploration and documentation of the Chesapeake Bay impact structure has proceeded in three phases."
The authors have synthesized 16 years of geological and geophysical studies which document an 85-km-wide impact crater buried 500 m beneath Chesapeake Bay in south eastern Virginia, USA. In doing so, they have integrated extensive seismic reflection profiling and deep core drilling to analyze the structure, morphology, gravimetrics, sedimentology, petrology, geochemistry, and paleontology of this submarine structure. Of special interest are a detailed comparison with other terrestrial and extraterrestrial craters, as well as a conceptual model and computer simulation of the impact. The extensive illustrations encompass more than 150 line drawings and core photographs. An accompanying CD-ROM includes selected seismic profiles, scaled cross sections, detailed maps, and downhole geophysical logs.
In an era that has brought new and unexpected challenges for virtually every company, one would be hard-pressed to find any responsible manager who is not thinking about what the future will bring. In the wake of these challenges, strategic planning has moved from being the reserve of large corporations to becoming an essential need for even small and medium-sized enterprises. But what good is even the most convincing strategic concept if the company 's people are unwilling or unable to put it into practice? The key is to develop people, and to develop them not only for the work of today, but also for the challenges that the future holds. Strategic HR development has become a decisive force for the success of any business. This book, edited by Matthias T. Meifert, shows us which basic considerations we need to remember and what strategic HR development means in practice. Its interesting and vivid approach takes the reader on a tour of the eight stages of HR development, introduces the critical factors, and highlights many practical recommendations for strategic HR development practice in business.
Despite no conclusive evidence, there is widespread belief that the high interest rates of the 1980s and 1990s in the developed world have been caused by high budget deficits.
VLSI (very large scale integration) technology is evolving to the point where complete systems are being integrated on a single chip, including ASICs, embedded processing, hardware and software control, analog and digital signal processing, sensors and actuators. In addition there is a demand for many systems to be compact, portable, with wireless communication, efficient production and low battery power operation. This book presents novel developments addressing the conception, design, CAD and realization of such new systems. Among the important issues presented are: VLSI systems on a chip; electronic design automation; ultra low voltage and low power; automatic synthesis; VLSI applications. The book comprises the selected proceedings of the International Conference on Very Large Scale Integration (VLSI '97) which was sponsored by the International Federation for Information Processing (IFIP) and was held in Gramado, Brazil in August 1997. It is a state-of-the-book for researchers and managers working on system integration, design and CAD.
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