National academies press aug 2002 (5 risultati)

Taschenbuch. Condizione: Neu. Neuware - Landslides are a component of those agents of nature that transport rock and soil from mountains or hillsides to streams, lakes and seas, where new sedimentary rocks begin to form. Therefore, as well as destructive forces that can be induced by human activity, landslides are part of the earth's natural cyclic process of uplift, erosion, and sedimentation. With the growth of human population and the increasing habitation of ever-steeper slopes and higher altitudes, Man is both experiencing the effects of landslides and causing landslides with increasing frequency. These adverse effects include loss of life, injury, and damage to public and private works, as well as environmental damage. Accordingly, it is an opportune time to address the hazard posed by landslides, and to assess strategies to mitigate that hazard. Assessment of Proposed Partnerships to Implement a National Landslide Hazards Mitigation Strategy: Interim Reports is an interim statement addressing the U.S. Geological Survey's proposal for a national landslide hazards mitigation strategy. The scope of this interim report is constrained to assessing whether all the partners necessary for such a national strategy have been identified by the proposal--conclusions and recommendations to address the remainder of the statement of task will be presented in the committee's final report (e.g., will include comments regarding effective partnership implementation; funding strategies required for an effective mitigation program; and the balance between different components of a national strategy). In addition, in this interim report the committee offers a number of comments intended as interim guidance for the U.S. Geological Survey as it continues to plan a national strategy. …

Taschenbuch. Condizione: Neu. Neuware - Since smallpox eradication, the science of eradication has changed and with it, our definitions of what diseases are possible to eradicate. However, eradication must not beget complacency. As has been learned from past control or eradication attempts with a variety of viral diseases, from yellow fever to influenza, accidental or intentional reintroduction is a real threat--one that could strike anywhere and for which we need to be fully prepared. The criteria for assessing eradicability of polio, measles, and other viral infections have been debated extensively. With the elimination and eradication of several viral diseases on the horizon, issues surrounding the cessation of immunization activities become exceedingly important. In an effort to better understand the dynamics of disease eradication and post--immunization policies, the Institute of Medicine Forum on Emerging Infections hosted a two-day workshop (February 1--2, 2001) on The Consequences of Viral Disease Eradication. This book explores the principles underlying the biological challenges, medical interventions, the continuing research agenda, and operational considerations for post--immunization strategies for vaccine--preventable viral diseases, and highlights important efforts that may facilitate wise decision making.…

Taschenbuch. Condizione: Neu. Neuware - The Committee on Modeling and Simulation Enhancements for 21st Century Manufacturing and Acquisition was formed by the NRC in response to a request from the Defense Modeling and Simulation Office (DMSO) of DOD. The committee was asked to (1) investigate next-generation evolutionary and revolutionary M&S capabilities that will support enhanced defense systems acquisition; (2) identify specific emerging design, testing, and manufacturing process technologies that can be enabled by advanced M&S capabilities; (3) relate these emerging technologies to long-term DOD requirements; (4) assess ongoing efforts to develop advanced M&S capabilities and identify gaps that must be filled to make the emerging technologies a reality; (5) identify lessons learned from industry; and (6) recommend specific government actions to expedite development and to enable maximum DOD and U.S. commercial benefit from these capabilities. To complete its task, the committee identified relevant trends and their impact on defense acquisition needs; current use and support for use of M&S within DOD; lessons learned from commercial manufacturing; three cross-cutting and especially challenging uses of M&S technologies; and the areas in which basic research is needed in M&S in order to achieve the desired goals for manufacturing and defense acquisition.…

Taschenbuch. Condizione: Neu. Neuware - The Internet has changed the way we access the world. This is especially true for kids, who soak up new technologies like eager little sponges. They have access to an enormous array of material, including educational links, sports info, chat rooms--and, unfortunately, pornography. But we must approach our need to protect children with care to avoid placing unnecessary restrictions on the many positive features of the Internet. Youth, Pornography, and the Internet examines approaches to protecting children and teens from Internet pornography, threats from sexual predators operating on-line, and other inappropriate material on the Internet. The National Research Council's Computer Science and Telecommunications Board explores a number of fundamental questions: Who defines what is inappropriate material Do we control Internet access by a 17-year-old in the same manner as for a 7-year-old What is the role of technology and policy in solving such a problem in the context of family, community, and society The book discusses social and educational strategies, technological tools, and policy options for how to teach children to make safe and appropriate decisions about what they see and experience on the Internet. It includes lessons learned from case studies of community efforts to intervene in kids' exposure to Internet porn. Providing a foundation for informed debate, this very timely and relevant book will be a must-read for a variety of audiences. …

Taschenbuch. Condizione: Neu. Neuware - The Missouri River Ecosystem: Exploring the Prospects for Recovery resulted from a study conducted at the request of the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers. The nation's longest river, the Missouri River and its floodplain ecosystem experienced substantial environmental and hydrologic changes during the twentieth century. The context of Missouri River dam and reservoir system management is marked by sharp differences between stakeholders regarding the river's proper management regime. The management agencies have been challenged to determine the appropriate balance between these competing interests. This Water Science and Technology Board report reviews the ecological state of the river and floodplain ecosystem, scientific research of the ecosystem, and the prospects for implementing an adaptive management approach, all with a view toward helping move beyond ongoing scientific and other differences. The report notes that continued ecological degradation of the ecosystem is certain unless some portion of pre-settlement river flows and processes were restored. The report also includes recommendations to enhance scientific knowledge through carefully planned and monitored river management actions and the enactment of a Missouri River Protection and Recovery Act.…