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Author: United States United States Air Force
Publisher: CreateSpace
ISBN: 9781499397499
Category :
Languages : en
Pages : 100
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Book Description
The character of future international conflicts represents a complex and unpredictable set of challenges that necessitates a significant shift in the United States' approach to warfighting. Strategic guidance in Sustaining U.S. Global Leadership: Priorities for 21st Century Defense reinforces that -...the United States will continue to take an active approach to countering...threats by monitoring the activities of non-state threats worldwide, working with allies and partners to establish control over ungoverned territories, and directly striking the most dangerous groups and individuals when necessary. The U.S. Air Force (USAF) Remotely Piloted Aircraft (RPA) Vector-Vision and Enabling Concepts: 2013-2038 balances the effects envisioned in the USAF Unmanned Aircraft Systems Flight Plan 2009-2047 with the reality of constrained resources and ambitious national strategy for a complex world. More importantly, as a visionary document, the RPA Vector opens the aperture beyond current austere fiscal realities to explore art of the possible technologies in the 2013-2038 timeframe. The intent is to examine technological advances necessary to enable the Air Force's future RPA force.
Author: United States United States Air Force
Publisher: CreateSpace
ISBN: 9781499397499
Category :
Languages : en
Pages : 100
Get Book Here
Book Description
The character of future international conflicts represents a complex and unpredictable set of challenges that necessitates a significant shift in the United States' approach to warfighting. Strategic guidance in Sustaining U.S. Global Leadership: Priorities for 21st Century Defense reinforces that -...the United States will continue to take an active approach to countering...threats by monitoring the activities of non-state threats worldwide, working with allies and partners to establish control over ungoverned territories, and directly striking the most dangerous groups and individuals when necessary. The U.S. Air Force (USAF) Remotely Piloted Aircraft (RPA) Vector-Vision and Enabling Concepts: 2013-2038 balances the effects envisioned in the USAF Unmanned Aircraft Systems Flight Plan 2009-2047 with the reality of constrained resources and ambitious national strategy for a complex world. More importantly, as a visionary document, the RPA Vector opens the aperture beyond current austere fiscal realities to explore art of the possible technologies in the 2013-2038 timeframe. The intent is to examine technological advances necessary to enable the Air Force's future RPA force.
Author: Andrew Ward
Publisher: Springer Science & Business Media
ISBN: 1592592112
Category : Medical
Languages : en
Pages : 381
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Book Description
Genomic imprinting is the process by which gene activity is regulated according to parent of origin. Usually, this means that either the maternally inherited or the paternally inherited allele of a gene is expressed while the opposite allele is repressed. The phenomenon is largely restricted to mammals and flowering plants and was first recognized at the level of whole genomes. Nuclear transplantation experiments carried out in mice in the late 1970s established the non-equivalence of the maternal and paternal genomes in mammals, and a similar conclusion was drawn from studies of interploidy crosses of flowering plants that extend back to at least the 1930s. Further mouse genetic studies, involving animals carrying balanced translocations (reviewed in Chapter 3), indicated that imprinted genes were likely to be widely scattered and would form a minority within the mammalian genome. The first imprinted genes were identified in the early 1990s; over forty are now known in mammals and the list continues steadily to expand.
Author: William M. Arkin
Publisher: Little, Brown
ISBN: 0316323365
Category : Political Science
Languages : en
Pages : 381
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Book Description
Unmanned is an in-depth examination of why seemingly successful wars never seem to end. The problem centers on drones, now accumulated in the thousands, the front end of a spying and killing machine that is disconnected from either security or safety. Drones, however, are only part of the problem. William Arkin shows that security is actually undermined by an impulse to gather as much data as possible, the appetite and the theory both skewed towards the notion that no amount is too much. And yet the very endeavor of putting fewer human in potential danger places everyone in greater danger. Wars officially end, but the Data Machine lives on forever. Throughout his career, Arkin has exposed powerful secrets of so-called national security and intelligence. Now he continues that tradition. The most alarming book about warfare in years, Unmanned is essential reading for anyone who cares about the future of mankind.
Author: United States. Department of the Air Force
Publisher:
ISBN:
Category : Air power
Languages : en
Pages : 100
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Book Description
"[This document] balances the effects envisioned in the USAF Unmanned Aircraft Systems Flight Plan 2009-2047 with the reality of constrained resources and ambitious national strategy for a complex world. More importantly, as a visionary document, the RPA Vector opens the aperture beyond current austere fiscal realities to explore art of the possible technologies in the 2013-2038 timeframe. The intent is to examine technological advances necessary to enable the Air Force's future RPA force. The large-scale, complex, force-on-force scenarios that drove much of the military's 'traditional' approach to planning are no longer sustainable. The Air Force will continue to plan in an effort to prepare for potential scenarios, whatever they may be. The Joint force will need to be smaller, leaner, adaptable, and make selective investments to meet its missions for United States national security at home and abroad, and the Air Force will play a significant role in this effort. RPA and the effects they provide will continue to have an important role as we rebalance the force toward the Asia-Pacific region. The essential problem for future joint forces will be to project military force into an operational area and sustain it in the face of armed opposition."--Executive summary, page iii.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 562
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Book Description
Author: David J. Rowe
Publisher: World Scientific
ISBN: 9812790667
Category : Science
Languages : en
Pages : 373
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Book Description
1. General trends and coupling schemes. 1.1. Introduction. 1.2. The aligned coupling scheme. 1.3. The pair coupling scheme. 1.4. Competition between aligned and pair coupling. 1.5. Quasi-particles -- 2. The collective vibrational model. 2.1. Vibrations in quantum mechanics. 2.2. The energy spectrum for shape oscillations. 2.3. Electromagnetic transition strengths. 2.4. The hydrodynamic collective parameters. 2.5. Comparison with experiment. 2.6. Sum rules -- 3. The unified model for vibrations. 3.1. Even-even nuclei. 3.2. Odd-mass nuciei - weak coupling. 3.3. Excitation of vibrational states in inelastic scattering -- 4. The vibrating potential model (VPM). 4.1. The adiabatic approximation. 4.2. The possibility of going to higher order. 4.3. The vibrating potential model (VPM). 4.4. Discussion -- 5. The E1 photoresonance. 5.1. The collective model. 5.2. The independent particle model (IPM). 5.3. The compatibility of the two approaches. 5.4. The unified model. 5.5. The structure of the photoresonance -- 6. The collective rotational model. 6.1. The two-particle rotor. 6.2. The asymmetric rotor model. 6.3. The symmetric rotor model. 6.4. K = 0 bands. 6.5. The symmetric core model. 6.6. K = 1/2 bands. 6.7. Electromagnetic moments and transitions. 6.8. Band mixing -- 7. The unified model for rotations. 7.1. The aligned wave-function. 7.2. The Nilsson model. 7.3. Intrinsic structure. 7.4. Even-even nuclei. 7.5. Odd-mass nuclei - strong coupling. 7.6. Excitation of rotational states in inelastic scattering -- 8. The moment of inertia. 8.1. The irrotational flow model. 8.2. The rotational flow model. 8.3. The two-fluid model. 8.4. The cranking model. 8.5. The pushing model -- 9. Hartree-Fock seH-consistent field theory : spherical nuclei. 9.1. Hartree theory. 9.2. Hartree-Fock (HF) theory. 9.3. Realistic and effective interactions. 9.4. Hartree-Fock calculations for closed-shell nuclei. 9.5. The shell model.
Author: Timothy P. Schultz
Publisher: JHU Press
ISBN: 1421424800
Category : Science
Languages : en
Pages : 277
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Book Description
An illuminating look at how human vulnerability led to advances in aviation technology. As aircraft flew higher, faster, and farther in the early days of flight, pilots were exposed as vulnerable, inefficient, and dangerous. They asphyxiated or got the bends at high altitudes; they fainted during high-G maneuvers; they spiraled to the ground after encountering clouds or fog. Their capacity to commit fatal errors seemed boundless. The Problem with Pilots tells the story of how, in the years between the world wars, physicians and engineers sought new ways to address these difficulties and bridge the widening gap between human and machine performance. A former Air Force pilot, Timothy P. Schultz delves into archival sources to understand the evolution of the pilot–aircraft relationship. As aviation technology evolved and enthusiasts looked for ways to advance its military uses, pilots ceded hands-on control to sophisticated instrument-based control. By the early 1940s, pilots were sometimes evicted from aircraft in order to expand the potential of airpower—a phenomenon much more common in today's era of high-tech (and often unmanned) aircraft. Connecting historical developments to modern flight, this study provides an original view of how scientists and engineers brought together technological, medical, and human elements to transform the pilot's role. The Problem with Pilots does away with the illusion of pilot supremacy and yields new insights into our ever-changing relationship with intelligent machines.
Author: S. M. Austin
Publisher: Springer Science & Business Media
ISBN: 1468483374
Category : Science
Languages : en
Pages : 388
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Book Description
The idea of this symposium grew out of our discussions on the need to review the advances that had been made in the theoretical description of inelastic scattering reactions in the last few years. Since a microscopic description of inelastic scattering uses realistic effective interactions, we felt that it was appropriate to begin such a summary with a discussion of the free two-nucleon force. However as we thought further about this review, it became increasingly apparent that a rather more ambitious program linking the free two-nucleon force and nuclear matter calculations both to shell model calculations and to reaction theory, would be appropriate and perhaps even necessary to do full justice to the subject. We hope that the symposium as it emerged did fulfill these aims, better perhaps than we expected. There are some comments required concerning the presentation of the material. First the papers are grouped by session number for convenient gathering of the same topic in the same place. Secondly, because of the rather tight constraint on pages, it was possible to print only those contributions which were presented orally at the symposium. The remainner are included as abstracts. The full text of all the contributed papers is available as a Michigan State University Cyclotron Laboratory Report (MSUCL 39/1971).
Author:
Publisher: Elsevier
ISBN: 0080538789
Category : Computers
Languages : en
Pages : 543
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Book Description
The first two volumes in this series published twenty years ago contained chapters devoted to anharmonic properties of solids, ab initio calculations of phonons in metals and insulators, and surface phonons. In the intervening years each of these important areas of lattice dynamics has undergone significant developments. This volume is therefore concerned with reviewing the current status of these areas. Chapter one deals with the path-integral quantum Monte-Carlo method as a numerical simulation approach and looks at how this has been applied successfully to the determination of low temperature thermodynamic properties of anharmonic crystals and to certain dynamical properties as well. Chapter two is concerned with the calculation of static and dynamic properties of anharmonic crystals in the quantum regime. Chapter three discusses intrinsic anharmonic localized modes that have been intensively studied recently. Two topics, ab initio calculations of phonons in metals, and surface phonons are dealt with in the next chapter. The remaining two chapters are devoted to topics that have not been treated in previous volumes. One is phonon transport and the second is phonons in disordered crystals. The work described in the six chapters of this volume testifies to the continuing vitality of the field of dynamical properties of solids nearly a century after its founding.
Author:
Publisher: Academic Press
ISBN: 0128125160
Category : Medical
Languages : en
Pages : 378
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Book Description
DNA Repair Enzymes, Part B, Volume 592 is the latest volume in the Methods in Enzymology series and the first part of a thematic that focuses on DNA Repair Enzymes. Topics in this updated volume include MacroBac: New Technologies for Robust and Efficient Large-Scale Production of Recombinant Multiprotein Complexes, Production and Assay of Recombinant Multisubunit Chromatin Remodeling Complexes, Analysis of Functional Dynamics of Modular Multidomain Proteins by SAXS and NMR, the Use of Single-Cysteine Variants for Trapping Transient States in DNA Mismatch Repair, and Structural Studies of RNases H2 as an Example of Crystal Structure Determination of Protein-Nucleic Acid Complexes. Includes contributions from leading authorities working in enzymology Focuses on DNA repair enzymes Informs and updates on all the latest developments in the field of enzymology
