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Author: United States Air Force Academy
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 278
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Book Description
Author: Suzanne Juhasz
Publisher: Createspace Independent Publishing Platform
ISBN: 9781979008624
Category :
Languages : en
Pages : 258
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Book Description
After a distinguished career as professor of English and women's studies, Suzanne Juhasz decided to retire. She saw retirement as a time to revive old interests and discover new ones. She started writing personal narrative, appeared in plays, took singing lessons, and continued her lifelong ballet classes. She expected this new phase to be exciting and satisfying. What she didn't anticipate was the uncertainty and anxiety that came with redefining herself in this in-between stage: past middle age but not quite elderly-what she has termed "senior space." She found herself on a journey of self-reflection, looking back on her family-her identities as daughter, granddaughter, mother, and grandmother, on her romantic relationships, and on her thirty-year career to help her understand her present. In this memoir, Juhasz offers an engaging view into the intimate details of her life: marrying young, having children, becoming a feminist, experiencing divorce, being one of the first generation of women's studies scholars. By sharing her story, she shows that as women mature, they are not cutting the threads of their lives but weaving them into new patterns.
Author: Michael Simpson Ph D
Publisher: Createspace Independent Publishing Platform
ISBN: 9781532784422
Category :
Languages : en
Pages : 448
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Book Description
FOREWORD By Bruce McCandless II Former NASA Astronaut This volume is the fifth in the series on contemporary space topics by the Aerospace Technology Working Group with support from Secure World Foundation, the International Space University, and the International Institute of Space Commerce. It deals principally with the topic of sustainability of space operations. In all fields of challenging endeavor actually accomplishing an objective (e.g., putting a satellite into orbit) comes first, followed by exploitation or commercialization, and lastly by a realization that the resource is finite. Such "finite-ness" may come from considerations of pollution (e.g., space debris, propulsion effluent) or of actual limitations on the availability of the resource (e.g., crowding of Geostationary Earth Orbit - GEO). Both of these topics are among those discussed in detail in this volume. Developing countries, in particular, may find such considerations too burdensome, and this begs the need for regulation to avoid the classic "Tragedy of the Commons" situation. In the case of orbital debris we have collectively arrived at a point where tens of millions of tiny pieces of debris are currently in orbit, decaying at diverse rates in a situation where a single flake of paint has been demonstrated to be capable of causing damage when impacting at high relative velocities. At the other end of the spectrum, defunct satellites (e.g., ESA's Envisat) present discrete problems worthy of individual retrieval/disposal efforts but fraught with complications arising from ownership to potentially still effective ITAR constraints on access to onboard technology. And, of course, the managers of the International Space Station are absolutely paranoid about higher altitude orbital debris eventually decaying to and ultimately impacting their very large orbiting facility. While space may realistically be dubbed "infinite," very specific orbits, or sets of orbits, have practical capacity limits. In GEO, for example, spacing of satellites along it are subject to constraints arising from use of the same radio frequency spectra and the size of ground based antennas required to spatially discriminate between adjacent satellites. In popular high inclination sun-synchronous Earth imaging orbits, these all converge near the poles, creating a traffic management concern arising from the risk of collision. The subject of "green propellants" is treated from several aspects. The Liquid Oxygen / Liquid Hydrogen system, while yielding only water vapor from combustion, may have a significant carbon footprint associated with the manufacture of the LH2 from methane or methanol. Aluminum oxide, an exhaust product of common solid propellant boosters is generally regarded as inert, but the inhalation of fine particles of it can cause pulmonary fibrosis or other lung damage in humans. Additionally the need for oxidizer depletion shutdown in the family of hydrazine/oxidizer booster stages results in significant quantities of UDMH (for example) being dispersed upon impact of the early stages. No Foreword can do adequate justice to the carefully developed material within the publication itself. For a detailed and thought provoking coverage of the principal topics associated with the sustainability of space operations, this book is highly recommended, authoritative, and "a good read."
Author: United States Air Force Academy
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 278
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Book Description
Author: Teresa Torres
Publisher: Product Talk LLC
ISBN: 1736633317
Category : Design
Languages : en
Pages : 201
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Book Description
"If you haven't had the good fortune to be coached by a strong leader or product coach, this book can help fill that gap and set you on the path to success." - Marty Cagan How do you know that you are making a product or service that your customers want? How do you ensure that you are improving it over time? How do you guarantee that your team is creating value for your customers in a way that creates value for your business? In this book, you'll learn a structured and sustainable approach to continuous discovery that will help you answer each of these questions, giving you the confidence to act while also preparing you to be wrong. You'll learn to balance action with doubt so that you can get started without being blindsided by what you don't get right. If you want to discover products that customers love-that also deliver business results-this book is for you.
Author: Martin Harwit
Publisher: Cambridge University Press
ISBN: 1108722040
Category : History
Languages : en
Pages : 375
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Book Description
The search -- Discoveries -- Observation -- Detection, recognition, and classification of cosmic phenomena -- The fringes of legitimacy : the need for enlightened planning.
Author:
Publisher:
ISBN:
Category : Periodicals
Languages : en
Pages : 578
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Book Description
Author: Brian Harvey
Publisher: Springer
ISBN: 3319681400
Category : Science
Languages : en
Pages : 293
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Book Description
Explorer was the original American space program and Explorer 1 its first satellite, launched in 1958. Sixty years later, it is the longest continuously running space program in the world, demonstrating to the world how we can explore the cosmos with small spacecraft. Almost a hundred Explorers have already been launched. Explorers have made some of the fundamental discoveries of the Space Age. Explorer 1 discovered Earth’s radiation belts. Later Explorers surveyed the Sun, the X-ray and ultraviolet universes, black holes, magnetars and gamma ray bursts. An Explorer found the remnant of the Big Bang. One Explorer chased and was the first to intercept a comet. The program went through a period of few launches during the crisis of funding for space science in the 1980s. However, with the era of ‘faster, cheaper, better,’ the program was reinvented, and new exiting missions began to take shape, like Swift and the asteroid hunter WISE. Discovering the Cosmos with Small Spacecraft gives an account of each mission and its discoveries. It breaks down the program into its main periods of activity and examines the politics and debate on the role of small spacecraft in space science. It introduces the launchers (Juno, Thor, etc.), the launch centers, the ground centers and key personalities like James Van Allen who helped develop and run the spacecraft’s exciting programs.
Author: Ashok K. Gangadean
Publisher: SUNY Press
ISBN: 9780791476062
Category : Philosophy
Languages : en
Pages : 336
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Book Description
Traces the roots of logos in different cultural milieux.
Author: Ian S. Robinson
Publisher: Springer Science & Business Media
ISBN: 3540683224
Category : Science
Languages : en
Pages : 678
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Book Description
This book offers a survey of the contribution of satellite data to the study of the ocean, focusing on the special insights that only satellite data can bring to oceanography. Topics range from ocean waves to ocean biology, spanning scales from basins to estuaries. Some chapters cover applications to pure research while others show how satellite data can be used operationally for tasks such as pollution monitoring or oil-spill detection.
Author: Dale P. Cruikshank
Publisher: University of Arizona Press
ISBN: 081653831X
Category : Science
Languages : en
Pages : 502
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Book Description
Discovering Pluto is an authoritative account of the exploration of Pluto and its moons, from the first inklings of tentative knowledge through the exciting discoveries made during the flyby of the NASA New Horizons research spacecraft in July 2015. Co-author Dale P. Cruikshank was a co-investigator on the New Horizons mission, while co-author William Sheehan is a noted historian of the Solar System. Telling the tale of Pluto’s discovery, the authors recount the grand story of our unfolding knowledge of the outer Solar System, from William Herschel’s serendipitous discovery of Uranus in 1781, to the mathematical prediction of Neptune’s existence, to Percival Lowell’s studies of the wayward motions of those giant planets leading to his prediction of another world farther out. Lowell’s efforts led to Clyde Tombaugh’s heroic search and discovery of Pluto—then a mere speck in the telescope—at Lowell Observatory in 1930. Pluto was finally recognized as the premier body in the Kuiper Belt, the so-called third zone of our Solar System. The first zone contains the terrestrial planets (Mercury through Mars) and the asteroid belt; the second, the gas-giant planets Jupiter through Neptune. The third zone, holding Pluto and the rest of the Kuiper Belt, is the largest and most populous region of the solar system. Now well beyond Pluto, New Horizons will continue to wend its lonely way through the galaxy, but it is still transmitting data, even today. Its ultimate legacy may be to inspire future generations to uncover more secrets of Pluto, the Solar System, and the Universe.
