Die Gegenwart ist nur ein Kartenhaus - Instabil, Band 2 (ungekurzt)
Автор: Sam Feuerbach
Год издания: 0000
Dusseldorf, Februar 2018 Aufgrund der ratselhaften Vorgange wird Patrick Richter von den Behorden auf den Kopf gestellt. Heraus fallt nur die Wahrheit, die niemand glaubt. Spezialisten versuchen dem Smartphone aus der Zukunft seine Geheimnisse zu entlocken. Doch der gro?ten Herausforderung begegnet Siggi erst im Jahr 2052. Mit dem Wissen aus der Zukunft nimmt Patrick das Schicksal in der Gegenwart in die Hand. Er scheitert. Er wurde alles dafur tun, es ungeschehen zu machen. Carsten Grunfeld schaltet sich ein. Die Ereignisse lassen ihm keine andere Wahl. Sein gefahrlichster Gegner ist die Zeit.
Building Cycles. Growth and Instability
Автор: Richard Barras
Год издания:
The global economic crisis of 2008 was precipitated by a housing market crash, thus highlighting the destabilizing influence of the property cycle upon the wider economy. This timely book by a world authority explores why cycles occur and how they affect the behaviour of real estate markets. The central argument put forward is that growth and instability are inextricably linked, and that building investment acts both as a key driver of growth and as the source of the most volatile cyclical fluctuations in an economy. The role of building cycles in both economic growth and urban development is explored through a theoretical review and a comparative historical analysis of UK and US national data stretching back to the start of the nineteenth century, together with a case study of the development of London since the start of the eighteenth century. A simulation model of the building cycle is presented and tested using data for the City of London office market. The analysis is then broadened to examine the operation of property cycles in global investment markets during the post-war period, focussing on their contribution to the diffusion of innovation, the accumulation of wealth and the propagation of market instability. Building Cycles: growth & instability concludes by synthesizing the main themes into a theoretical framework, which can guide our understanding of the operation and impact of building cycles on the modern economy. Postgraduate students on courses in property and in urban development as well as professional property researchers, urban economists and planners will find this a stimulating read – demanding but accessible.
Mechanical Instability
Автор: Malburet Francois
Год издания:
This book presents a study of the stability of mechanical systems, i.e. their free response when they are removed from their position of equilibrium after a temporary disturbance. After reviewing the main analytical methods of the dynamical stability of systems, it highlights the fundamental difference in nature between the phenomena of forced resonance vibration of mechanical systems subjected to an imposed excitation and instabilities that characterize their free response. It specifically develops instabilities arising from the rotor–structure coupling, instability of control systems, the self-sustained instabilities associated with the presence of internal damping and instabilities related to the fluid–structure coupling for fixed and rotating structures. For an original approach following the analysis of instability phenomena, the book provides examples of solutions obtained by passive or active methods.
Thermohydrodynamic Instability in Fluid-Film Bearings
Автор: J. K. Wang
Год издания:
Thermohydrodynamic Instability in Fluid-Film Bearings aims to establish instability criteria for a rotor-bearing system associated with fluid-film journal bearings. • It focuses on how the influencing factors such as rotor flexibility, manufacturing imperfections such as residual shaft unbalance, and service-related imperfections such as uneven wear affect the stability of a rotor-bearing system • It shows how the specific operating conditions such as oil inlet temperature, inlet pressure, and inlet position of a rotor-bearing system directly influence the system stability • General design guidelines have been summarized to guide the engineering system design and the correction of failure and/or malfunction
Resonances, Instability, and Irreversibility
Автор: Ilya Prigogine
Год издания:
In Resonances, Instability, and Irreversibility: The Liouville Space Extension of Quantum Mechanics T. Petrosky and I. Prigogine Unstable Systems in Generalized Quantum Theory E. C. G. Sudarshan, Charles B. Chiu, and G. Bhamathi Resonances and Dilatation Analyticity in Liouville Space Erkki J. Brandas Time, Irreversibility, and Unstable Systems in Quantum Physics E. Eisenberg and L. P. Horwitz Quantum Systems with Diagonal Singularity I. Antoniou and Z. Suchanecki Nonadiabatic Crossing of Decaying Levels V. V. and Vl. V. Kocharovsky and S. Tasaki Can We Observe Microscopic Chaos in the Laboratory? Pierre Gaspard Proton Nonlocality and Decoherence in Condensed Matter – Predictions and Experimental Results C. A. Chatzidimitriou-Dreismann «We are at a most interesting moment in the history of science. Classical science emphasized equilibrium, stability, and time reversibility. Now we see instabilities, fluctuations, evolution on all levels of observations. This change of perspective requires new tools, new concepts. This volume invites the reader not to an enumeration of final achievements of contemporary science, but to an excursion to science in the making.» –from the Foreword by I. Prigogine What are the dynamical roots of irreversibility? How can past and future be distinguished on the fundamental level of description? Are human beings the children of time –or its progenitors? In recent years, a growing number of chemists and physicists have agreed that the solution to the problem of irreversibility requires an extension of classical and quantum mechanics. There is, however, no consensus on which direction this extension should take to include the dynamical description of irreversible processes. Resonances, Instability, and Irreversibility surveys recent attempts –both direct and indirect –to address the problem of irreversibility. Internationally recognized researchers report on their recent studies, which run the gamut from experimental to highly mathematical. The subject matter of these papers falls into three categories: classical systems with emphasis on chaos and dynamical instability, resonances and unstable quantum systems, and the general problem of irreversibility. Presenting the cutting edge of research into some of the most compelling questions that face contemporary chemical physics, Resonances, Instability, and Irreversibility is fascinating reading for professionals and students in every area of the discipline.
Control of Cutting Vibration and Machining Instability
Автор: Meng-Kun Liu
Год издания:
Presents new developments on machine tool vibration control based on discontinuous dynamical systems Machining instability is a topical area, and there are a wide range of publications that cover the topic. However, many of these previous studies have started by assuming that the behavior of the system can be linearised. Meanwhile, there are many recent advances in the fields of signal processing, nonlinear dynamics, and nonlinear control, all of which are relevant to the machining stability problem. This book establishes the fundamentals of cutting mechanics and machine tool dynamics in the simultaneous time-frequency domain. The new nonlinear control theory developed by the authors that facilitates simultaneous control of vibration amplitude in the time-domain and spectral response in the frequency-domain provides the foundation for the development of a controller architecture universally viable for the control of dynamic instability including bifurcation and chaos. Once parameters underlying the coupling, interaction, and evolution of different cutting states and between the tool and workpiece are established, they can then be incorporated into the architecture to create a control methodology that mitigate machining instability and enable robust, chatter-free machine tool design applicable in particular to high speed micro- and nano-machining. Presents new developments on machine tool vibration control based on discontinuous dynamical systems Provides a clear and concise approach to the understanding and control of machine tool and workpiece vibrations from an alternative view, contributing to an in-depth understanding of cutting dynamics and robust control of machining instability Equips the reader with the knowledge to understand the dynamics of cutting and operation of machine-tool systems in different conditions as well as the concept of cutting instability control Includes data examples in MATLAB coding