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2 752 produkter
2 752 produkter
Häftad, Engelska, 1987
3 056 kr
Skickas inom 3-6 vardagar
Surveying the dynamic field of engineering research, Directions in Engineering Research first presents an overview of the status of engineering research today. It then examines research and needs in a variety of areas: bioengineering; construction and structural design; energy, mineralogy, and the environment; information science and computers; manufacturing; materials; and transportation. Specific areas of current research opportunity are discussed in detail, including complex system software, advanced engineered materials, manufacturing systems integration, bioreactors, construction robotics, biomedical engineering, hazardous material control, computer-aided design, and manufacturing modeling and simulation. The authors' recommendations call for funding stability for engineering research programs; modern equipment and facilities; adequate coordination between researchers; increased support for high-risk, high-return, single-investor projects; recruiting of new talent and fostering of multidisciplinary research; and enhanced industry support. Innovative ways to improve the transfer of discoveries from the laboratory to the factory are also presented.
Häftad, Engelska, 1989
2 807 kr
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In this volume, the National Research Council examines problems arising throughout government-owned, contractor-operated facilities in the United States engaged in activities to build nuclear weapons. The book draws conclusions about and makes recommendations for the health and safety of the nuclear weapons complex and addresses pressing environmental concerns. In addition, the book examines the future of the complex and offers suggestions for its modernization. Several explanatory appendixes provide useful background information on the functioning of the complex, criticality safety, plutonium chemistry, and weapons physics.
Häftad, Engelska, 1991
1 265 kr
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On November 13, 1985, catastrophic mudflows swept down the slopes of the erupting Nevado del Ruiz volcano, destroying structures in their paths. Various estimates of deaths ranged as high as 24,000 residents. Though the nature and extent of risk posed by the mudflows to local communities were well documented before the event and extensive efforts had been made to communicate this information to those at risk, the affected communities were caught largely unaware. This volume analyzes the disaster's many aspects: the extent, constitution, and behavior of the mudflows; the nature of damage to structures; the status of the area's disaster warning system; and the extent of the area's disaster preparedness, emergency response actions, and disaster relief efforts--both at the time of the disaster and in the first few months following the event.
Häftad, Engelska, 1993
609 kr
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Materials are important in the pursuit of virtually every human endeavor. Advances in materials are applied not only in advanced technological systems such as spacecraft, jet engines, computers, and telecommunications but also in a world of more familiar applications from automobiles to floor coverings to fishing rods. This book addresses the factors that impede the transition of new materials from concepts into commercial use. It identifies policies and actions that government and industry, together with universities, can take to remove these impediments. Incentives to accelerate the commercialization of advanced materials are suggested, and recommendations are presented on ways to stimulate competitive commercialization of materials by government, industry, and academia.
Häftad, Engelska, 1993
1 763 kr
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The U.S. Army Chemical Stockpile Disposal Program was established with the goal of destroying the nation's stockpile of lethal unitary chemical weapons. Since 1990 the U.S. Army has been testing a baseline incineration technology on Johnston Island in the southern Pacific Ocean. Under the planned disposal program, this baseline technology will be imported in the mid to late 1990s to continental United States disposal facilities; construction will include eight stockpile storage sites. In early 1992 the Committee on Alternative Chemical Demilitarization Technologies was formed by the National Research Council to investigate potential alternatives to the baseline technology. This book, the result of its investigation, addresses the use of alternative destruction technologies to replace, partly or wholly, or to be used in addition to the baseline technology. The book considers principal technologies that might be applied to the disposal program, strategies that might be used to manage the stockpile, and combinations of technologies that might be employed.
Häftad, Engelska, 1994
2 064 kr
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The Loma Prieta earthquake struck the San Francisco area on October 17, 1989, causing 63 deaths and $10 billion worth of damage. This book reviews existing research on the Loma Prieta quake and draws from it practical lessons that could be applied to other earthquake-prone areas of the country. The volume contains seven keynote papers presented at a symposium on the earthquake and includes an overview written by the committee offering recommendations to improve seismic safety and earthquake awareness in parts of the country susceptible to earthquakes.
Häftad, Engelska, 1995
1 312 kr
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The nation's physical infrastructure facilitates movement of people and goods; provides safe water; provides energy when and where needed; removes wastes; enables rapid communications; and generally supports our economy and quality of life. Developing a framework for guiding attempts at measuring the performance of infrastructure systems and grappling with the concept of defining good performance are the major themes of this book. Focusing on urban regions, within a context of national policy, the volume provides the basis for further in-depth analysis and application at the local, regional, state, and national levels.
Häftad, Engelska, 1994
1 301 kr
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A number of trends and forces are converging to require change in the National Oceanic and Atmospheric Administration's (NOAA) nautical charting mission. The most salient among these are changes in customer requirements, with a growing demand for customized and digital nautical information products; a changing customer base that encompasses uses of nautical charts in conjunction with coastal management, regulation, and development activities; and advances in technologies both for acquiring survey data and for structuring, displaying, analyzing, and disseminating nautical information. This volume assesses the needs of users of nautical information; reviews existing and emerging technologies; and examines major issues associated with information acquisition, chart preparation, and dissemination. The book addresses user requirements for improved nautical chart products, as well as technical and programmatic issues relating to the need for and provision of nautical information.
Häftad, Engelska, 1995
1 297 kr
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Yucca Mountain, located on the Nevada Test Site, is being considered as a potential repository site for spent nuclear fuel and high-level radioactive waste. To determine the suitability of Yucca Mountain as a repository, the Department of Energy constructed an underground Exploratory Studies Facility (ESF) where tests and experiments will be performed. This book addresses safety issues which will impact the construction and operation of the ESF and other similar underground facilities. The authors discuss proactive strategies for underground safety management with an emphasis on planning for safety, safety regulations, and the enforcement of such regulations. Also included are illustrations of successful approaches in creating a safe environment for those who work underground.
Häftad, Engelska, 1995
1 321 kr
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Major benefits to system architecture would result if cooling systems for components could be eliminated without compromising performance. This book surveys the state-of-the-art for the three major wide bandgap materials (silicon carbide, nitrides, and diamond), assesses the national and international efforts to develop these materials, identifies the technical barriers to their development and manufacture, determines the criteria for successfully packaging and integrating these devices into existing systems, and recommends future research priorities.
Häftad, Engelska, 1996
1 299 kr
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This book identifies challenges and opportunities in the development and implementation of software that contain significant statistical content. While emphasizing the relevance of using rigorous statistical and probabilistic techniques in software engineering contexts, it presents opportunities for further research in the statistical sciences and their applications to software engineering. It is intended to motivate and attract new researchers from statistics and the mathematical sciences to attack relevant and pressing problems in the software engineering setting. It describes the "big picture," as this approach provides the context in which statistical methods must be developed. The book's survey nature is directed at the mathematical sciences audience, but software engineers should also find the statistical emphasis refreshing and stimulating. It is hoped that the book will have the effect of seeding the field of statistical software engineering by its indication of opportunities where statistical thinking can help to increase understanding, productivity, and quality of software and software production.
Häftad, Engelska, 1996
1 336 kr
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Floods are by far the most devastating of all weather-related hazards in the United States. The National Weather Service (NWS) is charged by Congress to provide river and flood forecasts and warnings to the public to protect life and property and to promote the nation's economic and environmental well-being (such as through support for water resources management). As part of a modernization of its technologies and organizational structure, the NWS is undertaking a thorough updating of its hydrologic products and services and the activities that produce them. The National Weather Service Modernization Committee of the National Research Council undertook a comprehensive assessment of the NWS' plans and progress for the modernization of hydrologic and hydrometeorological operations and services. The committee's conclusions and recommendations and their related analysis and rationale are presented in this report.
Häftad, Engelska, 1997
1 510 kr
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Deterrence as a strategic concept evolved during the Cold War. During that period, deterrence strategy was aimed mainly at preventing aggression against the United States and its close allies by the hostile Communist power centers--the Union of Soviet Socialist Republics (USSR) and its allies, Communist China and North Korea. In particular, the strategy was devised to prevent aggression involving nuclear attack by the USSR or China. Since the end of the Cold War, the risk of war among the major powers has subsided to the lowest point in modern history. Still, the changing nature of the threats to American and allied security interests has stimulated a considerable broadening of the deterrence concept. Post-Cold War Conflict Deterrence examines the meaning of deterrence in this new environment and identifies key elements of a post-Cold War deterrence strategy and the critical issues in devising such a strategy. It further examines the significance of these findings for the U.S. Navy and Marine Corps. Quantitative and qualitative measures to support judgments about the potential success or failure of deterrence are identified.Such measures will bear on the suitability of the naval forces to meet the deterrence objectives. The capabilities of U.S. naval forces that especially bear on the deterrence objectives also are examined. Finally, the book examines the utility of models, games, and simulations as decision aids in improving the naval forces' understanding of situations in which deterrence must be used and in improving the potential success of deterrence actions.
Häftad, Engelska, 1997
1 490 kr
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Häftad, Engelska, 1997
1 336 kr
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The Space Studies Board of the National Research Council (NRC) serves as the primary adviser to the National Aeronautics and Space Administration (NASA) on planetary protection policy, the purpose of which is to preserve conditions for future biological and organic exploration of planets and other solar system objects and to protect Earth and its biosphere from potential extraterrestrial sources of contamination. In October 1995 the NRC received a letter from NASA requesting that the Space Studies Board examine and provide advice on planetary protection issues related to possible sample-return missions to near-Earth solar system bodies.
Häftad, Engelska, 1997
1 167 kr
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Häftad, Engelska, 1998
1 262 kr
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This study was undertaken in response to a request by the U.S. Air Force that the National Research Council (NRC) examine whether the technologies that underlie the concept of a hypersonic, air-launched, air-breathing, hydrocarbon-fueled missile with speeds up to Mach 81 can be demonstrated in time to be initially operational by 2015. To conduct the study, the NRC appointed the Committee on Review and Evaluation of the Air Force Hypersonic Technology Program, under the auspices of the Air Force Science and Technology Board.
Häftad, Engelska, 1999
2 085 kr
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The future safety of maritime transportation in the United States-a major factor in the nation's international trade and economic well-being-will depend heavily on the quality of port and waterways information systems. Many U.S. ports and waterways lack adequate information services, although certain elements of advanced systems are now available in some locations. Barriers to improvements in information systems include the division of responsibilities for waterways management among multiple agencies at all levels of government, a lack of coordination among the federal agencies responsible for waterways management, inadequate budgets for some critical maritime programs, the high costs of some specialized technologies, stakeholder opposition to user fees, limited access to certain key data, the incompatibility of many independently developed systems, and the absence of standards for some attractive technologies.In this report, the second phase of a three-year study by the Committee on Maritime Advanced Information Systems of the National Research Council, a strategy is presented for overcoming the major barriers and deficiencies and providing a minimum level of maritime safety information nationwide. In this phase of the study, the committee concentrated on maritime information systems that promote safety, which is the area of greatest need. The committee did not examine in detail the relationship between navigation safety and maritime transportation efficiency or evaluate information systems that promote efficiency; the committee believes, however, that these issues deserve further attention.
Häftad, Engelska, 1999
1 167 kr
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In 1993, the U.S. Department of Energy (DOE) Office of Industrial Technology (OIT) established a group of seven industries designated as Industries of the Future (IOF). These industries were selected for their high energy use and large waste generation. The original IOF included the aluminum, chemicals, forest products, glass, metalcasting, petroleum refining, and steel industries. Each industry was asked to provide a future vision and a road map detailing the research required to realize its vision. In November 1994, the forest products industry was the first of the IOF industries to enter into an agreement with DOE. OIT asked the National Research Council's National Materials Advisory Board (NMAB) to provide guidance for OIT's transition to the new IOF strategy. The Committee on Industrial Technology Assessment (CITA) was formed for this purpose with the specific tasks of reviewing and evaluating the overall OIT program, reviewing selected OIT-sponsored research projects, and identifying crosscutting technologies (i.e., technologies applicable to more than one industry).CITA was asked to focus on three specific areas: intermetallic alloys, manufacturing process controls, and separations. A separate panel was formed to study each area and publish the results in separate reports.
Häftad, Engelska, 1999
1 380 kr
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Gravitational Physics assesses the achievements of the field over the past decade in both theory and experiment, identifies the most promising opportunities for research in the next decade, and describes the resources necessary to realize those opportunities. A major theme running through the opportunities is the exploration of strong gravitational fields, such as those associated with black holes. The book, part of the ongoing decadal survey Physics in a New Era, examines topics such as gravitational waves and their detection, classical and quantum theory of strong gravitational fields, precision measurements, and astronomical observations relevant to the predictions of Einstein's theory of general relativity.
Häftad, Engelska, 2001
702 kr
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In response to HUD's request, the NRC assembled a panel of experts, the Committee for Oversight and Assessment of the Partnership for Advancing Technology in Housing, under the auspices of the Board on Infrastructure and the Constructed Environment. Over an initial term of three years, the committee was asked to review and comment on the following aspects of the PATH program: overall goals; proposed approach to meeting the goals and the likelihood of achieving them; and measurements of progress toward achieving the goals.
Häftad, Engelska, 2001
587 kr
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In response to a mandate from Congress in conjunction with the Protection of Children from Sexual Predators Act of 1998, the Computer Science and Telecommunications Board and the Board on Children, Youth, and Families of the National Research Council and the Institute of Medicine established a committee of experts to explore options to protect children from pornography and other inappropriate Internet content. In June 2000, the Committee to Study Tools and Strategies for Protecting Kids from Pornography on the Internet and Their Applicability to Other Inappropriate Internet Content was established. Support for the committee's work came from the U.S. Department of Education, the U.S. Department of Justice, Microsoft Corporation, IBM, the W.K. Kellogg Foundation, and the National Research Council. The committee has been charged with exploring the pros and cons of different technology options and operational policies as well as nontechnical strategies that can help to provide young people with positive and safe online experiences.On December 13, 2000, the committee convened a workshop to provide public input to its work and focus on nontechnical strategies that could be effective in a broad range of settings (e.g., home, school, libraries) in which young people might be online. The overarching goal of this activity was to provide a forum for discussing the implications of this research with regard to policy and practice and identifying research needed to advance and inform policy and practice.
Häftad, Engelska, 2001
702 kr
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Since the mid-1940s, when Vannevar Bush and Theodore von Karman wrote Science, the Endless Frontier and Toward New Horizons, respectively, there has been a consensus that strong Department of Defense support of science and technology (S&T) is important to the security of the United States. During the Cold War, as it faced technologically capable adversaries whose forces potentially outnumbered U.S. forces, the United States relied on a strong defense S&T program to support the development of technologically superior weapons and systems that would enable it to prevail in the event of conflict. Since the end of the Cold War, the United States has relied on its technological superiority to maintain a military advantage while at the same time reducing the size of its forces. Over the past half-century, creating and maintaining a technologically superior military capability have become fundamental to U.S. national security strategy, and investment in S&T has become a basic component of the defense budget. In late 1998, Congress asked the Secretary of Defense to conduct a study, in cooperation with the National Research Council (NRC), on the S&T base of the U.S.Department of Defense (DoD). Congress was particularly concerned about areas of the S&T program related to air systems, space systems, and supporting information systems. Its concern was based on the Air Force's reduction of its S&T program from the largest of the three military service programs to the smallest. Congress also wanted to ensure that the Air Force maintained an appropriately sized S&T workforce. In late 1999, the Deputy Under Secretary of Defense for Science and Technology asked the NRC to conduct a study to explore these issues.
Häftad, Engelska, 1986
1 758 kr
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Based on a colloquium sponsored by the Water Science and Technology Board, this book addresses the need for research toward the problems of water management during drought episodes. It covers such topics as the causes and occurrence of drought, drought management options, acceptable risks for public systems, and legal and institutional aspects of drought management.
Häftad, Engelska, 1985
1 758 kr
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Both sides of the engineering equation--education and utilization--are studied in this unique volume. A brief discussion of the development of engineering in the United States is followed by an examination of the status of engineering today. A specially developed flow diagram, which defines all aspects of the current engineering community, demonstrates how the profession adapts and responds to change. The book then takes a critical look at the strengths and weaknesses of current engineering and evaluates major trends in the composition of the engineering work force. The final section offers a preview of engineering and its environment in the year 2000. Companion volumes in the Engineering Education and Practice in the United States series listed below discuss specific issues in engineering education.
Häftad, Engelska, 2001
583 kr
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Concerned with the vulnerability of U.S. civilian and military personnel to terrorist bombing attacks, the U.S. Congress directed the Department of Defense to undertake a comprehensive research and testing program aimed at protecting people in buildings from such attacks. The Blast Mitigation for Structures Program (BMSP) was initiated in 1997 and has produced a large volume of experimental and analytical data that will permit the design of new, more robust buildings as well as the development of methods to retrofit a large number of vulnerable existing structures. This report reviews the BMSP program and investigates a process that would use existing institutional infrastructures (i.e., building code and standards-writing organizations, professional and technical organizations, universities, and research centers) to disseminate knowledge.
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Engelska, 2022554 kr
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Advances in materials science and engineering play a crucial role in supporting the U.S. economy and national security. To maintain its leading edge in the field, the United States relies on a rich and diverse innovation ecosystem encompassing industry, academic institutions, and government laboratories. While this ecosystem has generated numerous gains for defense agencies, the technology sector, consumers, and the country as a whole over many decades, recent years have brought new challenges and a shifting global dynamic in the field. The United States, long a global magnet for science, technology, engineering, and mathematics education and expertise, has seen its competitive edge slip as other countries in Europe and Asia have increased their investments in cultivating science and engineering talent and innovation. In 2020, the emergence of the COVID-19 pandemic caused far-reaching disruptions for both education and supply chains across the world, compounding many of the dynamics that were already affecting materials science and engineering in the United States.
To explore these issues, the Workshop on Materials Science and Engineering in a Post-Pandemic World was organized as part of a workshop series on Defense Materials Manufacturing and Its Infrastructure. Hosted by the National Academies of Sciences, Engineering, and Medicine, the virtual event brought together approximately 30 speakers and attendees representing materials science, engineering, and manufacturing experts from industry, academia, and government agencies. The 3-day workshop explored education and workforce trends across the nation and the globe, with particular focus on the U.S. Department of Defense and university-government collaborations. Participants discussed how the COVID-19 pandemic has affected science and engineering education, opportunities to reimagine traditional education for the field, and the imperative to develop a more diverse workforce. Several speakers presented their views on what the post-pandemic future may hold, and many offered perspectives on key concerns and priorities for the field moving forward. This publication summarizes the presentations and discussion of the workshop.
Häftad, Engelska, 2002
954 kr
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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.
Häftad, Engelska, 2003
623 kr
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For thirty years the NASA microgravity program has used space as a tool to study fundamental flow phenomena that are important to fields ranging from combustion science to biotechnology. This book assesses the past impact and current status of microgravity research programs in combustion, fluid dynamics, fundamental physics, and materials science and gives recommendations for promising topics of future research in each discipline. Guidance is given for setting priorities across disciplines by assessing each recommended topic in terms of the probability of its success and the magnitude of its potential impact on scientific knowledge and understanding; terrestrial applications and industry technology needs; and NASA technology needs. At NASAa (TM)s request, the book also contains an examination of emerging research fields such as nanotechnology and biophysics, and makes recommendations regarding topics that might be suitable for integration into NASAa (TM)s microgravity program.
Häftad, Engelska, 2003
672 kr
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This report addresses the transition of research satellites, instruments, and calculations into operational service for accurately observing and predicting the Eartha (TM)s environment. These transitions, which take place in large part between NASA and NOAA, are important for maintaining the health, safety, and prosperity of the nation, and for achieving the vision of an Earth Information System in which quantitative information about the complete Earth system is readily available to myriad users. Many transitions have been ad hoc, sometimes taking several years or even decades to occur, and others have encountered roadblocksa "lack of long-range planning, resources, institutional or cultural differences, for instancea "and never reached fruition. Satellite Observations of Eartha (TM)s Environment recommends new structures and methods that will allow seamless transitions from research to practice.