The first part of this third volume focuses on the design of mechatronic components, in particular the feed drives of machine tools used to generate highly dynamic drive movements. Engineering guides for the selection and design of important machine components, the control technology of feed drives, and the measuring systems required for position capture are presented. Another focus is on process and diagnostic equipment for manufacturing machines and systems. The second part describes control concepts including programming methods for various applications of modern production systems. Programmable logic controllers (PLC), numerical controllers (NC) and robot controllers (RC) are part of these presentations. In the context of automated manufacturing systems, the various levels of the automation pyramid and the importance of control systems are also outlined. Finally, the volume deals with the engineering of machines and plants. The German Machine Tools and Production Systems Compendium has been completely revised. The previous five-volume series has been condensed into three volumes in the new ninth edition with colored technical illustrations throughout. This first English edition is a translation of the German ninth edition.
The first part of this volume provides the user with assistance in the selection and design of important machine and frame components. It also provides help with machine design, calculation and optimization of these components in terms of their static, dynamic and thermoelastic behavior. This includes machine installation, hydraulic systems, transmissions, as well as industrial design and guidelines for machine design. The second part of this volume deals with the metrological investigation and assessment of the entire machine tool or its components with respect to the properties discussed in the first part of this volume. Following an overview of the basic principles of measurement and measuring devices, the procedure for measuring them is described. Acceptance of the machine using test workpieces and the interaction between the machine and the machining process are discussed in detail. The German Machine Tools and Manufacturing Systems Compendium has been completely revised. The previous five-volume series has been condensed into three volumes in the new ninth edition with color technical illustrations throughout. This first English edition is a translation of the German ninth edition.
The first book to introduce the concept of emergency powers to the study of International Organizations, to investigate the emergency politics of IOs in comparative perspective, and to examine why IOS are often reluctant to rescind such powers when the motivating threat as passed.
The book summarizes the results of the European research project "Intelligent fixtures for the manufacturing of low rigidity components" (INTEFIX). The structure of the book follows the sub-projects which are dedicated to case studies within the scenarios "vibrations", "deformations" and "positioning". The INTEFIX project deals with the development and analysis of several exemplary types of intelligent, sensor and actuator integrated fixtures for the clamping of sensitive workpieces in cutting machine tools. Thus, the book gives a representative overview about this innovative field of technology. The demands of the case studies are described and the technological approaches and solutions are introduced. Furthermore, innovative methods for the design and optimization of intelligent fixtures are presented.
Two Sides of a Barricade argues that to construct global democracy, conflict and dissent must be taken seriously. Christian Scholl explores the political significance of the confrontations within four sites of interaction: bodies, space, communication, and law. Each site of struggle provides a different entry point to understand the influence of protester and police tactics on each other. At the same time, the four sites of struggle allow a comprehensive analysis of how the contestation of global hegemonic forces during summit protests trigger a preemptive shift in social control through increased deployment of biopolitical forms of power. This book is freely available in an open access edition thanks to Knowledge Unlatched—an initiative that provides libraries and institutions with a centralized platform to support OA collections and from leading publishing houses and OA initiatives. Learn more at the Knowledge Unlatched website at: https://www.knowledgeunlatched.org/, and access the book online at the SUNY Open Access Repository at http://hdl.handle.net/20.500.12648/1709.
This book provides a brief historical overview of Europe's migration experience since World War II, and presents a simple economic model that shows how immigration can affect the host countries' economies.
No one can understand the complete tragedy of the American experience in Vietnam without reading this book. Nothing so underscores the ambivalence and confusion of the American commitment as does the composition of our fighting forces. The rich and the powerful may have supported the war initially, but they contributed little of themselves. That responsibility fell to the poor and the working class of America.--Senator George McGovern "Reminds us of the disturbing truth that some 80 percent of the 2.5 million enlisted men who served in Vietnam--out of 27 million men who reached draft age during the war--came from working-class and impoverished backgrounds. . . . Deals especially well with the apparent paradox that the working-class soldiers' families back home mainly opposed the antiwar movement, and for that matter so with few exceptions did the soldiers themselves.--New York Times Book Review "[Appy's] treatment of the subject makes it clear to his readers--almost as clear as it became for the soldiers in Vietnam--that class remains the tragic dividing wall between Americans.--Boston Globe
The possibility of stimulated light emission was discussed by Einstein in 1917, eight years before the quantum-mechanical description of energy levels of many-electron systems. Though it is imperative to use samples having optical properties greatly different from the stan dard continuous spectrum of opaque objects ("black body" radia tion) it is not always necessary to restrict the study to monatomic entities. Thus, spectral lines can be obtained (in absorption and in emission) from lanthanide compounds, containing from one to thir teen 4f electrons going from trivalent cerium to ytterbium, that are nearly as sharp as the ones from gaseous atoms. However, the presence of adjacent atoms modifies the simple picture of an isolated electron configuration, and in particular, it is possible to pump excited levels efficiently by energy transfer from species with intense absorption bands, such as the inter-shell transitions of other lanthanides and of thallium(I), lead(II) and bismuth(III) or the electron transfer bands of the uranyl ion or other complexes. On the other hand, it is possible to diminuish the mUlti-phonon relaxation (competing with sharp line luminescence) by selecting vitreous or crystalline materials with low phonon energies. Obviously, one cannot circumvent the conservation of energy by lasers, but they may have unprecedented consequences for the future by allowing nuclear fusion of light elements, effects of non-linear optics and time-resolved spectroscopy, besides the more conventional applications of coherent light beams with negligible angular extension.
Strategy, at its best, knits together ends and means, no matter how various and disparate, into a cohesive pattern. In the case of a U.S. information strategy, this requires balancing the need to guard and secure access to many informational capabilities and resources, with the opportunity to achieve national aims by fostering as much openness as practicable. The authors' term to represent such strategic balancing is guarded openness. They go on to describe noopolitik (nu-oh-poh-li-teek)--an emerging form of statecraft that emphasizes the importance of sharing ideas and values globally, principally through the exercise of persuasive soft power rather than traditional military hard power. This study discusses the opportunities that may be raised by the emergence of noopolitik--ranging from construction of a noosphere (a globe-spanning realm of the mind) to recommendations that, for example, the U.S. military should begin to develop its own noosphere (among and between the services, as well as with U.S. allies). In the area of international cooperation, the authors offer strategic approaches for improving the capacity of state and nonstate actors to work together to address transnational problems. In addition, the authors recommend specific doctrinal developments, implied by the emergence of information strategy--including the pressing need to deal with such ethical concerns as the first use of information weapons, concepts of proportional response, and the need to maintain the immunity of noncombatants. Ultimately, the authors call for an innovative turn of mind as policymakers and strategists rethink how best to adapt to the epochal transformations being wrought by the information revolution.
Why is criminal justice so central to American politics? Lockdown America notonly documents the horrors and absurdities of militarized policing,prisons, a fortified border, and the federalization of the war oncrime, it also explains the political and economic history behind themassive crackdown. This updated edition includes an afterword on the War on Terror, a meditation on surveillance and the specter of terrorism as they help reanimate the criminal justice attack. Written in vivid prose, Lockdown America willpropel readers toward a deeper understanding of the links between crimeand politics in a period of gathering economic crisis.
Obtain the best outcomes from the latest techniques with help from a "who's who" of orthopaedic trauma experts! In print and online, you'll find the in-depth knowledge you need to manage any type of traumatic injury in adults. Major updates keep you up to speed on current trends such as the management of osteoporotic and fragility fractures, locked plating technology, post-traumatic reconstruction, biology of fracture repair, biomechanics of fractures and fixation, disaster management, occupational hazards of radiation and blood-borne infection, effective use of orthotics, and more. A DVD of operative video clips shows you how to perform 25 key procedures step by step. A new, full-color page layout makes it easier to locate the answers you need quickly. And now, for the first time, you can access the complete contents online, for enhanced ease and speed of reference! Complete, absolutely current coverage of relevant anatomy and biomechanics, mechanisms of injury, diagnostic approaches, treatment options, and associated complications equips you to confidently approach every form of traumatic injury. Enhanced and updated coverage keeps you current on the latest knowledge, procedures, and trends - including post-traumatic reconstruction, management of osteoporotic and fragility fractures, locked plating systems, mini incision techniques, biology of fracture repair, biomechanics of fractures and fixation, disaster management, occupational hazards of radiation and blood-borne infection, effective use of orthotics, and much more. More than six hours of operative videos on DVD demonstrate 25 of the very latest and most challenging techniques in real time, including minimally invasive vertebral disc resection, vertebroplasty, and lumbar decompression and stabilization. Online access allows you to rapidly search the complete contents from any computer. New editor Christian Kretek contributes additional international expertise to further enhance the already exceptional editorial lineup. An all-new, more user-friendly full-color text design enables you to find answers more quickly, and more efficiently review the key steps of each operative technique. More than 2,400 high-quality line drawings, diagnostic images, and full-color clinical photos show you exactly what to look for and how to proceed.
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