Download or read book Reducing Space Mission Cost written by James R. Wertz and published by Springer. This book was released on 1996-07-31 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reducing Space Mission Cost is the first complete treatment of the technology, process, and problems in the most critical areas of modern spaceflight. The demand to reduce cost is unrelenting. This pioneering book addresses all aspects of this problem, including: Technology and processes for reducing cost Cost reduction in mission engineering, spacecraft design, manufacture, launch, and operations Implementation methods and problems The price of reducing cost 10 detailed case studies of what works in practice in: Science missions Interplanetary probes Communications spacecraft Test and Applications missions Beginning on the inside front cover, this book provides real cost data on a variety of missions, systems, and subsystems. According to the authors: `Reducing mission cost is hard enough if you know what the real costs are, and virtually impossible if you don't.' This book challenges traditional methods, yet recognizes that all space programs are run to minimize cost within the rules under which they are built and flown. It provides practical recipes for reducing cost in both new and ongoing missions and discusses what works, what government can do to help, and what methods intended to reduce cost may be counterproductive and unintentionally increase cost. As shown on the inside rear cover, the case studies described in the book have reduced total mission cost by 80% to more than 90% with respect to projections by traditional cost methods. This book is a follow-on to the now standard text and reference, Space Mission Analysis and Design, also edited by Drs. Wertz and Larson. It is required reading for professionals, students, and managers in astronautics or space sciences and managers or scientists involved in space experiments. This book shows that reducing space mission cost, without reducing reliability, is as possible as it is important for the future of space exploration.
Download or read book Orbital Debris written by National Research Council and published by National Academies Press. This book was released on 1995-07-07 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the beginning of space flight, the collision hazard in Earth orbit has increased as the number of artificial objects orbiting the Earth has grown. Spacecraft performing communications, navigation, scientific, and other missions now share Earth orbit with spent rocket bodies, nonfunctional spacecraft, fragments from spacecraft breakups, and other debris created as a byproduct of space operations. Orbital Debris examines the methods we can use to characterize orbital debris, estimates the magnitude of the debris population, and assesses the hazard that this population poses to spacecraft. Potential methods to protect spacecraft are explored. The report also takes a close look at the projected future growth in the debris population and evaluates approaches to reducing that growth. Orbital Debris offers clear recommendations for targeted research on the debris population, for methods to improve the protection of spacecraft, on methods to reduce the creation of debris in the future, and much more.
Download or read book Fighting for Space written by Travis Lupick and published by arsenal pulp press. This book was released on 2018-06-05 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: North America is in the grips of a drug epidemic; with the introduction of fentanyl, the chances of a fatal overdose are greater than ever, prompting many to rethink the war on drugs. Public opinion has slowly begun to turn against prohibition, and policy-makers are finally beginning to look at addiction as a health issue as opposed to one for the criminal justice system. While deaths across the continent continue to climb, Fighting for Space explains the concept of harm reduction as a crucial component of a city’s response to the drug crisis. It tells the story of a grassroots group of addicts in Vancouver's Downtown Eastside who waged a political street fight for two decades to transform how the city treats its most marginalized citizens. Over the past twenty-five years, this group of residents from Canada's poorest neighborhood organized themselves in response to the growing number of overdose deaths and demanded that addicts be given the same rights as any other citizen; against all odds, they eventually won. But just as their battle came to an end, fentanyl arrived and opioid deaths across North America reached an all-time high. The "genocide" in Vancouver finally sparked government action. Twenty years later, as the same pattern plays out in other cities, there is much that advocates for reform can learn from Vancouver's experience. Fighting for Space tells that story—including case studies in Ohio, Florida, New York, California, Massachusetts, and Washington state—with the same passionate fervor as the activists whose tireless work gave dignity to addicts and saved countless lives. This publication meets the EPUB Accessibility requirements and it also meets the Web Content Accessibility Guidelines (WCAG-AA). It is screen-reader friendly and is accessible to persons with disabilities. A Simple book with few images, which is defined with accessible structural markup. This book contains various accessibility features such as alternative text for images, table of contents, page-list, landmark, reading order and semantic structure.
Download or read book Active Subspaces written by Paul G. Constantine and published by SIAM. This book was released on 2015-03-17 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and engineers use computer simulations to study relationships between a model's input parameters and its outputs. However, thorough parameter studies are challenging, if not impossible, when the simulation is expensive and the model has several inputs. To enable studies in these instances, the engineer may attempt to reduce the dimension of the model's input parameter space. Active subspaces are an emerging set of dimension reduction tools that identify important directions in the parameter space. This book describes techniques for discovering a model's active subspace and proposes methods for exploiting the reduced dimension to enable otherwise infeasible parameter studies. Readers will find new ideas for dimension reduction, easy-to-implement algorithms, and several examples of active subspaces in action.
Download or read book Space Shuttle Solid Rocket Booster Main Parachute Damage Reduction Team Report written by G. Watts and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Radiation Cancer Risk Projections for Exploration Missions Uncertainty Reduction and Mitigation written by and published by DIANE Publishing. This book was released on 2002 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hamiltonian Reduction by Stages written by Jerrold E. Marsden and published by Springer. This book was released on 2007-06-05 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a detailed account of the theory of symplectic reduction by stages, along with numerous illustrations of the theory. It gives special emphasis to group extensions, including a detailed discussion of the Euclidean group, the oscillator group, the Bott-Virasoro group and other groups of matrices. The volume also provides ample background theory on symplectic reduction and cotangent bundle reduction.
Download or read book Multiscale Model Reduction written by Eric Chung and published by Springer Nature. This book was released on 2023-06-07 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is devoted to the study of multiscale model reduction methods from the point of view of multiscale finite element methods. Multiscale numerical methods have become popular tools for modeling processes with multiple scales. These methods allow reducing the degrees of freedom based on local offline computations. Moreover, these methods allow deriving rigorous macroscopic equations for multiscale problems without scale separation and high contrast. Multiscale methods are also used to design efficient solvers. This book offers a combination of analytical and numerical methods designed for solving multiscale problems. The book mostly focuses on methods that are based on multiscale finite element methods. Both applications and theoretical developments in this field are presented. The book is suitable for graduate students and researchers, who are interested in this topic.
Download or read book The Reduction of Physical Theories written by Erhard Scheibe and published by Springer Nature. This book was released on 2022-06-30 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using simple physical examples, this work by Erhard Scheibe presents an important and powerful approach to the reduction of physical theories. Novel to the approach is that it is not based, as usual, on a single reduction concept that is fixed once and for all, but on a series of recursively constructed reductions, with which all reductions appear as combinations of very specific elementary reductions. This leaves the general notion of theory reduction initially open and is beneficial for the treatment of the difficult cases of reduction from the fields of special and general relativity, thermodynamics, statistical mechanics,and quantum mechanics, which are treated in the second volume. The book is systematically organized and intended for readers interested in philosophy of science as well as physicists without deep philosophical knowledge.
Download or read book Calling for a Mutual and Verifiable Freeze on and Reductions in Nuclear Weapons written by United States. Congress. House. Committee on Foreign Affairs and published by . This book was released on 1983 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics of Space Security written by David Wright and published by . This book was released on 2005 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Radon Reduction Methods written by R. B. Mosley and published by . This book was released on 1989 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Linear and Nonlinear Model Order Reduction for Numerical Simulation of Electric Circuits written by Kasra Mohaghegh and published by Logos Verlag Berlin GmbH. This book was released on 2010 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing complexity combined with decreasing geometrical sizes in electric circuit design lead to high dimensional dynamical models to be considered by EDA tools. Model order reduction (MOR) has become a popular strategy to decrease the problem's size while preserving its crucial properties. MOR shall achieve accurate statements on a circuit's behavior within an affordable amount of computational time. Just recently, MOR techniques are designed to consider the differential algebraic nature of the underlying models. We present an approach based on an e-embedding, i.e., a strategy applied in the construction of numerical integration schemes for differential algebraic equations (DAEs). The system of DAEs is transformed into an artificial system of ordinary differential equations (ODEs), since MOR schemes for ODEs can be applied now. We construct, analyze and test different strategies with respect to the usage of the parameter e that transforms the DAEs into ODEs. Moreover, accurate mathematical models for MOS-devices introduce highly nonlinear equations. As the packing density of devices is growing in circuit design, huge nonlinear systems appear in practice. It follows an increasing demand for reduced order modeling of nonlinear problems. In the thesis, we also review the status of existing techniques for nonlinear MOR by investigating the performance of the schemes applied in circuit simulation.
Download or read book Reduction of Nonessential Federal Expenditures Dec 10 1942 Jan 5 8 and 22 1943 written by United States. Congress. Joint Committee on Reduction of Nonessential Federal Expenditures and published by . This book was released on 1942 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of Nonessential Federal Expenditures written by United States. Congress. Joint Committee on Reduction of Nonessential Federal Expenditures and published by . This book was released on 1942 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IUTAM Symposium on Model Order Reduction of Coupled Systems Stuttgart Germany May 22 25 2018 written by Jörg Fehr and published by Springer. This book was released on 2019-07-19 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the IUTAM Symposium on Model Order Reduction of Coupled System, held in Stuttgart, Germany, May 22–25, 2018. For the understanding and development of complex technical systems, such as the human body or mechatronic systems, an integrated, multiphysics and multidisciplinary view is essential. Many problems can be solved within one physical domain. For the simulation and optimization of the combined system, the different domains are connected with each other. Very often, the combination is only possible by using reduced order models such that the large-scale dynamical system is approximated with a system of much smaller dimension where the most dominant features of the large-scale system are retained as much as possible. The field of model order reduction (MOR) is interdisciplinary. Researchers from Engineering, Mathematics and Computer Science identify, explore and compare the potentials, challenges and limitations of recent and new advances.
Download or read book Reduction Approximation Machine Learning Surrogates Emulators and Simulators written by Gianluigi Rozza and published by Springer Nature. This book was released on with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
