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Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Programs
by Aeronautics Space Engineering BoardDerelict satellites, equipment and other debris orbiting Earth (aka space junk) have been accumulating for many decades and could damage or even possibly destroy satellites and human spacecraft if they collide. During the past 50 years, various National Aeronautics and Space Administration (NASA) communities have contributed significantly to maturing meteoroid and orbital debris (MMOD) programs to their current state. Satellites have been redesigned to protect critical components from MMOD damage by moving critical components from exterior surfaces to deep inside a satellite's structure. Orbits are monitored and altered to minimize the risk of collision with tracked orbital debris. MMOD shielding added to the International Space Station (ISS) protects critical components and astronauts from potentially catastrophic damage that might result from smaller, untracked debris and meteoroid impacts. Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Program examines NASA's efforts to understand the meteoroid and orbital debris environment, identifies what NASA is and is not doing to mitigate the risks posed by this threat, and makes recommendations as to how they can improve their programs. While the report identified many positive aspects of NASA's MMOD programs and efforts including responsible use of resources, it recommends that the agency develop a formal strategic plan that provides the basis for prioritizing the allocation of funds and effort over various MMOD program needs. Other necessary steps include improvements in long-term modeling, better measurements, more regular updates of the debris environmental models, and other actions to better characterize the long-term evolution of the debris environment.
Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Programs
by Aeronautics Space Engineering BoardDerelict satellites, equipment and other debris orbiting Earth (aka space junk) have been accumulating for many decades and could damage or even possibly destroy satellites and human spacecraft if they collide. During the past 50 years, various National Aeronautics and Space Administration (NASA) communities have contributed significantly to maturing meteoroid and orbital debris (MMOD) programs to their current state. Satellites have been redesigned to protect critical components from MMOD damage by moving critical components from exterior surfaces to deep inside a satellite's structure. Orbits are monitored and altered to minimize the risk of collision with tracked orbital debris. MMOD shielding added to the International Space Station (ISS) protects critical components and astronauts from potentially catastrophic damage that might result from smaller, untracked debris and meteoroid impacts. Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Program examines NASA's efforts to understand the meteoroid and orbital debris environment, identifies what NASA is and is not doing to mitigate the risks posed by this threat, and makes recommendations as to how they can improve their programs. While the report identified many positive aspects of NASA's MMOD programs and efforts including responsible use of resources, it recommends that the agency develop a formal strategic plan that provides the basis for prioritizing the allocation of funds and effort over various MMOD program needs. Other necessary steps include improvements in long-term modeling, better measurements, more regular updates of the debris environmental models, and other actions to better characterize the long-term evolution of the debris environment.
Reference Manual on Scientific Evidence: Third Edition
by Committee on the Development of the Third Edition of the Reference Manual on Scientific EvidenceThe Reference Manual on Scientific Evidence, Third Edition, assists judges in managing cases involving complex scientific and technical evidence by describing the basic tenets of key scientific fields from which legal evidence is typically derived and by providing examples of cases in which that evidence has been used. First published in 1994 by the Federal Judicial Center, the Reference Manual on Scientific Evidence has been relied upon in the legal and academic communities and is often cited by various courts and others. Judges faced with disputes over the admissibility of scientific and technical evidence refer to the manual to help them better understand and evaluate the relevance, reliability and usefulness of the evidence being proffered. The manual is not intended to tell judges what is good science and what is not. Instead, it serves to help judges identify issues on which experts are likely to differ and to guide the inquiry of the court in seeking an informed resolution of the conflict. The core of the manual consists of a series of chapters (reference guides) on various scientific topics, each authored by an expert in that field. The topics have been chosen by an oversight committee because of their complexity and frequency in litigation. Each chapter is intended to provide a general overview of the topic in lay terms, identifying issues that will be useful to judges and others in the legal profession. They are written for a non-technical audience and are not intended as exhaustive presentations of the topic. Rather, the chapters seek to provide judges with the basic information in an area of science, to allow them to have an informed conversation with the experts and attorneys.
The Future of Advanced Nuclear Technologies: Interdisciplinary Research Team Summaries
by Committee on Clean Water Act Implementation Across the Mississippi River BasinThe National Academies Keck Futures Initiative (NAKFI) Conference in 2013 focused on the Future of Advanced Nuclear Technologies to generate new ideas about how to move nuclear technology forward while making the world safer and more secure. Beyond the public's apprehension concerning the safety of nuclear power, which calls out for better communications strategies, several challenges lie ahead for the nuclear enterprise in the United States. The workforce in nuclear technology is aging, there is an overreliance on large, high-risk reactor designs, and the supply of radioisotopes for nuclear medicine remains unstable--all problems crying out for solutions. The Future of Advanced Nuclear Technologies summarizes the 14 Interdisciplinary Research (IDR) teams' collaborations on creative solutions to challenges designed to propel the policy, engineering, and social aspects of the nuclear enterprise forward.
A Review of the Use of Science and Adaptive Management in California's Draft Bay Delta Conservation Plan
by Water Science Technology BoardThe San Francisco Bay Delta Estuary is a large, complex estuarine ecosystem in California. It has been substantially altered by dikes, levees, channelization, pumps, human development, introduced species, dams on its tributary streams and contaminants. The Delta supplies water from the state's wetter northern regions to the drier southern regions and also serves as habitat for many species, some of which are threatened and endangered. The restoration of water exacerbated tensions over water allocation in recent years, and have led to various attempts to develop comprehensive plans to provide reliable water supplies and to protect the ecosystem. One of these plans is the Bay Delta Conservation Plan (BDCP). The report, A Review of the Use of Science and Adaptive Management in California's Draft Bay Delta Conservation Plan, determines that the plan is incomplete in a number of important areas and takes this opportunity to identify key scientific and structural gaps that, if addressed, could lead to a more successful and comprehensive final BDCP. The plan is missing the type of structure usually associated with current planning methods in which the goals and objectives are specified, alternative measure for achieving the objectives are introduced and analyzed, and a course of action in identified based on analytical optimization of economic, social, and environmental factors. Yet the panel underscores the importance of a credible and a robust BDCP in addressing the various water management problems that beset the Delta. A stronger, more complete, and more scientifically credible BDCP that effectively integrates and utilizes science could indeed pave the way toward the next generation of solutions to California's chronic water problems.
Review of NASA's Human Research Program Evidence Books: A Letter Report
by Board on Health Sciences PolicyAt the request of NASA, an IOM committee reviewed NASA Human Research Program's (HRP's) Scientific Merit Assessment Processes for directed research. Directed research is commissioned or noncompetitively awarded research that is not competitively solicited because of specific reasons, such as time limitations or highly focused or constrained research topics. The scientific merit assessment processes have been developed by NASA to evaluate individual directed research tasks in order to ensure the scientific integrity of the HRP's directed research portfolio. The committee examined the HRP's current scientific merit assessment processes and conducted a public workshop to identify best practices among other federal agencies that use various assessment processes for similar types of directed research. Review of NASA Human Research Program's Scientific Merit Processes: Letter Report finds that the scientific merit assessment process used by the HRP for directed research is scientifically rigorous and is similar to the processes and merit criteria used by many other federal agencies and organizations - including the Department of Defense, National Institutes of Health, and the United States Department of Agriculture - for comparable types of research. This report also makes recommendations on ways to streamline and bolster the accountability and transparency of NASA's current processes.
Stick and Rudder: An Explanation of the Art of Flying
by Wolfgang LangewiescheIn the early 1940's, Wolfgang Langewiesche wrote a series of articles in Air Facts analyzing the various aspects of piloting techniques. Based on these articles, Langewiesche's classic work on the art of flying was published in 1944. This book explains precisely what pilots do when they fly, just how they do it, and why. These basics are largely unchanging. The book applies to large airplanes and small, old airplanes and new, and is of interest not only to the learner but also to the accomplished pilot and instructor. Today, several excellent manuals offer the pilot accurate and valuable technical information. But Stick and Rudder remains the leading think-book on the art of flying.
Economy Of Machinery And Manufacture #2
by Charles Babbage"...it was my intention to have delivered the present work in the form of a course of lectures at Cambridge; an intention which I was subsequently induced to alter. The substance of a considerable portion of it has, however, appeared among the preliminary chapters of the mechanical part of the Encyclopedia Metropolitana."
Stowaway to the Mushroom Planet
by Eleanor CameronDoes anyone but Chuck Masterson and David Topman and Mr. Bass know about the Mushroom Planet? Well, there's Mr. Tyco Bass's cousin, Mr. Theo. He is a Mushroom Person, like Mr. Tyco, so he knows. And of course David and Chuck told their families about THE WONDERFUL FLIGHT TO THE MUSHROOM PLANET (along with a good many thousands of readers). But what if just an ordinary human being should happen to find out about it? Would it ruin everything? The answer is in this second story about Basidium, the small planet which can only be seen when Tyco Bass's special filter is affixed to the telescope. David and Chuck, returning to Basidium in their new space ship, have considerable difficulty carrying out Mr. Bass's wish that the planet be kept a dead secret. One Horatio Q. Peabody makes this trip even more of an adventure than the first one.
Ritual and Religion in the Making of Humanity
by Roy A. RappaportThis book argues that religion can and must be reconciled with science. Combining adaptive and cognitive approaches, it is a comprehensive analysis of religion's evolutionary significance, and its inextricable interdependence with language. It is also a detailed study of religion's main component, ritual, which constructs the conceptions that we take to be religious and therefore central in the making of humanity's adaptation. The text amounts to a manual for effective ritual, illustrated by examples drawn from a range of disciplines.
International Perspectives: THE FUTURE OF NONHUMAN PRIMATE RESOURCES
by National Research Council of the National AcademiesThe future of nonhuman primate (NHP) resources is a concern of scientists, veterinarians, and funding authorities. An April 2002 workshop brought participants from all over the world to discuss various aspects of the issue such as current shortfalls and excesses in NHP breeding and exportation programs, the status of breeding and conservation programs internationally, the development of specific pathogen-free colonies, difficulties in transporting NHP, and challenges in the management of NHP colonies.
The Role Of Scientific And Technical Data And Information In The Public Domain: Proceedings Of A Symposium
by National Research Council of the National AcademiesThis symposium brought together leading experts and managers from the public and private sectors who are involved in the creation, dissemination, and use of scientific and technical data and information (STI) to: (1) describe and discuss the role and the benefits and costs--both economic and other--of the public domain in STI in the research and education context, (2) to identify and analyze the legal, economic, and technological pressures on the public domain in STI in research and education, (3) describe and discuss existing and proposed approaches to preserving the public domain in STI in the United States, and (4) identify issues that may require further analysis.
FRONTIERS IN High Energy Density Physics: THE X-GAMES OF CONTEMPORARY SCIENCE
by National Research Council of the National AcademiesRecent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation’s nuclear weapon’s program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the development of a comprehensive strategy for realizing these research opportunities.
Science, Evidence, and Inference in Education: Report of a Workshop
by National Academy PressThe National Academies Press (NAP)--publisher for the National Academies--publishes more than 200 books a year offering the most authoritative views, definitive information, and groundbreaking recommendations on a wide range of topics in science, engineering, and health. Our books are unique in that they are authored by the nation's leading experts in every scientific field.
Feathers, Flippers, and Fur
by Dorothy Hinshaw PatentThe book is factually enriched with photographs of various animals, their habitats, along with distinguishing characteristics and behaviours.