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Books > Professional & Technical > Other technologies > Space science
This book includes the proceedings of the conference "Problems of the Geocosmos" held by the Earth Physics Department, St. Petersburg State University, Russia, every two years since 1996. Covering a broad range of topics in solid Earth physics and solar-terrestrial physics, as well as more applied subjects such as engineering geology and ecology, the book reviews the latest research in planetary geophysics, focusing on the interaction between the Earth's shells and the near-Earth space in a unified system. This book is divided into four sections: * Exploration and Environmental Geophysics (EG), which covers two broad areas of environmental and engineering geophysics - near-surface research and deep geoelectric studies; * Paleomagnetism and Rock Magnetism (P), which includes research on magnetostratigraphy, paleomagnetism applied to tectonics, environmental magnetism, and marine magnetic anomalies; * Seismology (S), which covers the theory of seismic wave propagation, Earth's structure from seismic data, global and regional seismicity and sources of earthquakes, and novel seismic instruments and data processing methods; and * Physics of Solar-Terrestrial Connections (STP), which includes magnetospheric phenomena, space weather, and the interrelationship between solar activity and climate.
How the scientific community overlooked, ignored, and denied the catastrophic fallout of decades of nuclear testing in the American West In December of 1950, President Harry Truman gave authorization for the Atomic Energy Commission to conduct weapons tests and experiments on a section of a Nevada gunnery range. Over the next eleven years, more than a hundred detonations were conducted at the Nevada Test Site, and radioactive debris dispersed across the communities just downwind and through much of the country. In this important work, James C. Rice tells the hidden story of nuclear weapons testing and the negligence of the US government in protecting public health. Downwind of the Atomic State focuses on the key decisions and events shaping the Commission's mismanagement of radiological contamination in the region, specifically on how the risks of fallout were defined and redefined, or, importantly, not defined at all, owing to organizational mistakes and the impetus to keep atomic testing going at all costs. Rice shows that although Atomic Energy Commission officials understood open-air detonations injected radioactive debris into the atmosphere, they did not understand, or seem to care, that the radioactivity would irrevocably contaminate these communities. The history of the atomic Southwest should be a wake-up call to everyone living in a world replete with large, complex organizations managing risky technological systems. The legacy of open-air detonations in Nevada pushes us to ask about the kinds of risks we are unwittingly living under today. What risks are we being exposed to by large organizations under the guise of security and science?
The military is moving slowly but surely toward a world in which weapons will be stationed in outer space, and officials argue that these developments are essential to the maintenance of US national security in the post-Cold War world. Handberg explores these recent proposals for change and assesses the policy implications that might well result in a challenge to proponents for the militarization of space. Taking the reader through the first "Sputnik" launch and then the Gulf War, the first space war, Handberg introduces his audience to a broad overview of space as an arena for the conduct of military activity. He argues that the new policies are likely to result in a world that is less, not more, secure. Both technologically and organizationally, the Gulf War served as a watershed for military and political leaders. As a result, the great changes occurring across the spectrum of space activities, as well as the commercial applications of space, have become particularly critical to the field. Handberg argues that one unintended outcome of current policy decisions could well be a resumption of the global arms race as powers jockey for positions in the heavens. Too much of the current military advocacy is premised upon temporary advantages, both military and economic, which will dissipate in time. The political leadership of the United States must be fully engaged in this debate, given its crucial importance for future American national security.
Spacecraft Dynamics and Control: The Embedded Model Control Approach provides a uniform and systematic way of approaching space engineering control problems from the standpoint of model-based control, using state-space equations as the key paradigm for simulation, design and implementation. The book introduces the Embedded Model Control methodology for the design and implementation of attitude and orbit control systems. The logic architecture is organized around the embedded model of the spacecraft and its surrounding environment. The model is compelled to include disturbance dynamics as a repository of the uncertainty that the control law must reject to meet attitude and orbit requirements within the uncertainty class. The source of the real-time uncertainty estimation/prediction is the model error signal, as it encodes the residual discrepancies between spacecraft measurements and model output. The embedded model and the uncertainty estimation feedback (noise estimator in the book) constitute the state predictor feeding the control law. Asymptotic pole placement (exploiting the asymptotes of closed-loop transfer functions) is the way to design and tune feedback loops around the embedded model (state predictor, control law, reference generator). The design versus the uncertainty class is driven by analytic stability and performance inequalities. The method is applied to several attitude and orbit control problems.
In order to reflect the increasing importance and interest of the microsatellites in high technology and scientific applications in space, the Colloquium on Microsatellites as Research Tools was organized to promote its usage and technology development and to foster the international cooperation, especially in the area of the Asia pacific region. Attended by 150 participants from 18 countries the colloquium was organized into five major themes: regional development, lessons learned, innovations, scientific applications, and education. A special session was organized as well by the organizing committee and supported by the National Space Program Office to present its development of the Taiwan's satellite program and the current status of ROCSAT-1 which is scheduled to be launched at the beginning of 1999. Two main conclusions were drawn from the material presented:
microsatellite in general is a very good means for doing space
research and technology development, and a suitable vehicle to
promote international collaborations.
Special Relativity, Electrodynamics, and General Relativity: From Newton to Einstein is intended to teach students of physics, astrophysics, astronomy, and cosmology how to think about special and general relativity in a fundamental but accessible way. Designed to render any reader a "master of relativity," all material on the subject is comprehensible and derivable from first principles. The book emphasizes problem solving, contains abundant problem sets, and is conveniently organized to meet the needs of both student and instructor.
From the Nasa astronaut who spent a record-breaking year aboard the International Space Station - what it's like out there and what it's like now, back here. Enter Scott Kelly's fascinating world and dare to think of your own a little differently. The veteran of four space flights and the American record holder for most consecutive days spent in space, Scott Kelly has experienced things very few of us ever have and very few of us ever will. Kelly's humanity, compassion, humour, and passion shine as he describes navigating the extreme challenge of long-term spaceflight, both existential and banal. He touches on what's happened to his body, the sadness of being isolated from everyone he loves; the pressures of constant close cohabitation; the catastrophic risks of colliding with space junk, and the still more haunting threat of being absent should tragedy strike at home. From a natural storyteller, Endurance is one of the finest examples the triumph of the human imagination, the strength of the human will, and the boundless wonder of the galaxy.
The book provides a structural analysis of the European space effort from an institute change perspective. It analyzes the EU-ESA inter-institutional relationship, gives an overview of the development of space policy in Europe, and advances the debate about the impact of the European integration process on existing institutional actors. While European Space collaboration was initially developed outside the competences of the European Union (EU) with space programmes being carried out almost exclusively under the framework of European Space Agency (ESA) and national agencies, the EU has gained "shared competences" (Art. 2, TFEU) in space policy following the adoption of the Lisbon Treaty. Currently the EU and ESA work together under a Framework Agreement. In 2016, the EU Commission has published a Communication entitled "European Space Policy" (ESP). Even though ESA's Member States have agreed to keep ESA as an intergovernmental organisation during the ESA Ministerial Council of 2014, the discussion about ESA becoming part of the EU framework continues. The EU's ambitions for leadership in European space policy raise question concerning the future of ESA. The study of institutions lies at the heart of political sciences. Strikingly the theoretic framework qualifying institutional change and making it comparable leaves room for more concrete and testable dimensions of institutional change.
It's happening now-plans are being formulated under the coordination of NASA to launch a permanent, manned space station by the year 1990. Studies surveying user requirements, system attributes, and architectural options have been conducted, and you're on the top of these far-reaching considerations on the next big step taken within space! Now that the Shuttle and Spacelab are realities, NASA has set sights on a new horizon-a permanent, manned space station in the high frontier. The precedents have been set-Skylab hosted human visits for up to 84 days, and the Soviet's Salyut was and is a temporary base for cosmonaut crew. The differences are the term and scope of space station living and the accomplishments that can be realized with a permanent site and continuous experimentation within its facilities. Brian O'Leary, writer, astrophysicist, and former astronaut, describes the "tinkermodules" that will be carried to the earth's orbit to be assembled as a space station. His inside track information also lay
This thesis focuses on the very high Mach number shock wave that is located sunward of Saturn's strong magnetic field in the continuous high-speed flow of charged particles from the Sun (the solar wind). The author exploits the fact that the Cassini spacecraft is the only orbiter in a unique parameter regime, far different from the more familiar near-Earth space, to provide in-situ insights into the unreachable exotic regime of supernova remnants. This thesis bridges the gap between shock physics in the Solar System and the physics of ultra-high Mach number shocks around the remnants of supernova explosions, since to date research into the latter has been restricted to theory, remote observations, and simulations.
It was all part of man's greatest adventure--landing men on the Moon and sending a rover to Mars, finally seeing the edge of the universe and the birth of stars, and launching planetary explorers across the solar system to Neptune and beyond.
This monograph traces the development of our understanding of how and where energetic particles are accelerated in the heliosphere and how they may reach the Earth. Detailed data sets are presented which address these topics. The bulk of the observations are from spacecraft in or near the ecliptic plane. It is timely to present this subject now that Voyager-1 has entered the true interstellar medium. Since it seems unlikely that there will be a follow-on to the Voyager programme any time soon, the data we already have regarding the outer heliosphere are not going to be enhanced for at least 40 years.
Rather than examining only the civil or military side of the US space program, as have many books in the past, "Space, the Dormant Frontier" takes a unique look at the space program as a whole. Part of the book's treatise is that the two communities must stop ignoring each other if the US space program is to move forward beyond being a science project, jobs program, or political football. How the program got into its current, semi-desperate state is also examined, as history has given space a legacy once glorious, now an albatross. The authors include information and analysis on the military and civil space programs, challenge the perspective of the Washington Beltway analyst with vested interests in the status quo, and make policy recommendations based on realism, rather than idealism.
The thesis presents a tool to create rubble pile asteroid simulants for use in numerical impact experiments, and provides evidence that the asteroid disruption threshold and the resultant fragment size distribution are sensitive to the distribution of internal voids. This thesis represents an important step towards a deeper understanding of fragmentation processes in the asteroid belt, and provides a tool to infer the interior structure of rubble pile asteroids. Most small asteroids are 'rubble piles' - re-accumulated fragments of debris from earlier disruptive collisions. The study of fragmentation processes for rubble pile asteroids plays an essential part in understanding their collisional evolution. An important unanswered question is "what is the distribution of void space inside rubble pile asteroids?" As a result from this thesis, numerical impact experiments can now be used to link surface features to the internal structure and therefore help to answer this question. Applying this model to asteroid Steins, which was imaged from close range by the Rosetta spacecraft, a large hill-like structure is shown to be most likely primordial, while a catena of pits can be interpreted as evidence for the existence of fracturing of pre-existing internal voids.
This thesis describes the studies on the solar interior where turbulent thermal convection plays an important role. The author solved, for the first time, one of the long-standing issues in solar physics, i.e., the maintenance mechanism of the solar differential rotation in the near-surface shear layer. The author attacked this problem with a newly developed approach, the reduced speed of sound technique, which enabled him to investigate the surface and deep solar layers in a self-consistent manner. This technique also made it possible to achieve an unprecedented performance in the solar convection simulations for the usage of the massively parallel supercomputers such as the RIKEN K system. It was found that the turbulence and the mean flows such as the differential rotation and the meridional circulation mutually interact with each other to maintain the flow structures in the Sun. Recent observations by helioseismology support the author's proposed theoretical mechanism. The book also addresses the generation of the magnetic field in such turbulent convective motions, which is an important step forward for solar cyclic dynamo research.
Over the last two decades, the image of the U.S. space program has become seriously tarnished. Its problems have ranged from massive cost overruns to serious program delays to catastrophic mission failures. The space program, once the most prominent symbol of American scientific and technological preeminence, now seems but one more example of government bumbling, extravagance, and waste. In this study, Kay examines the recent problems of the space program and finds that NASA's failures, like its earlier successes, are ultimately traceable to the way the American political system operates. Asking can democracies fly in space?, the author suggests that the traditional workings of democratic politics actually exacerbates those very features of space projects--size, expense, and complexity--that make their development so difficult in the first place.
This book provides detailed insights into how space and popular culture intersect across a broad spectrum of examples, including cinema, music, art, arcade games, cartoons, comics, and advertisements. This is a pertinent topic since the use of space themes differs in different cultural contexts, and these themes can be used to explore various aspects of the human condition and provide a context for social commentary on politically sensitive issues. With the use of space imagery evolving over the past sixty years of the space age, this is a topic ripe for in-depth exploration. The book also discusses the contrasting visions of space from the late 19th and early 20th centuries and the reality of today, and analyzes space vehicles and habitats in popular depictions of space from an engineering perspective, exploring how many of those ideas have actually been implemented in practice, and why or why not (a case of life imitating art and vice versa). As such, it covers a wide array of relevant and timely topics examining intersections between space and popular culture, and offering accounts of space and its effect on culture, language, and storytelling from the southern regions of the world. |
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