This book develops and substantiates methods for structural mathematical modeling in the context of protecting machines and equipment from vibration effects. It analyzes problems concerning the dynamic interactions of elements in mechanical oscillatory systems, constructing suitable mathematical models, estimating their dynamic properties, and adapting structural mathematical models to the equivalent forms. In turn, it develops a methodological basis for identifying the lever linkages and taking into account the peculiarities of their influence on the dynamic properties of systems. Given its scope, the book offers a valuable resource for specialists in the fields of dynamics and strength of machines, vibration protection systems for equipment, and maintenance of the dynamic quality of vibrating machines, as well as students in related degree programs.
The Vol. 5 of this Book Series contains 22 chapters written by 79 contributors-experts from universities, research centres and industry from 15 countries: Australia, Canada, China, France, Germany, Italy, Malaysia, Mexico, Poland, Portugal, Russia, Slovenia, Spain, Ukraine and USA. This volume contains information at the cutting edge of sensor research and related topics from the following three areas: Physical Sensors, Sensor Networks and Remote Sensing. Coverage includes current developments in various sensors, sensor instrumentation and applications. In order to offer a fast and easy reading of each topic, every chapter in this volume is independent and self-contained.With the unique combination of information in this volume, the 'Advances in Sensors: Reviews' Book Series will be of value for scientists and engineers in industry and at universities, to sensors developers, distributors, and end users.
Wave Turbulence refers to the statistical theory of weakly nonlinear dispersive waves. There is a wide and growing spectrum of physical applications, ranging from sea waves, to plasma waves, to superfluid turbulence, to nonlinear optics and Bose-Einstein condensates. Beyond the fundamentals the book thus also covers new developments such as the interaction of random waves with coherent structures (vortices, solitons, wave breaks), inverse cascades leading to condensation and the transitions between weak and strong turbulence, turbulence intermittency as well as finite system size effects, such as “frozen” turbulence, discrete wave resonances and avalanche-type energy cascades. This book is an outgrow of several lectures courses held by the author and, as a result, written and structured rather as a graduate text than a monograph, with many exercises and solutions offered along the way. The present compact description primarily addresses students and non-specialist researchers wishing to enter and work in this field.
Proceedings of the 5th International Conference on Sensors and Electronic Instrumentation Advances SEIA' 2019), 25-27 September 2019, Tenerife (Canary Islands), Spain. The coverage includes: various physical sensors, gas sensors, optical and fiber optical sensors and systems, biosensors, sensors networks and applications.
How Putin's autocracy undercut Russia's economy and chances for democracy During his nearly twenty years at the center of Russian political power, Vladimir Putin has transformed the vast country in many ways, not all of them for the better. The near-chaos of the early post-Soviet years has been replaced by an increasingly rigid authoritarianism, resembling a hard-fisted monarchy more than the previous communist dictatorship. Putin's early years in power saw rapid economic growth, averaging nearly 7 percent annually, and the rise of Moscow as a vibrant European-style city. But a slowdown during the second half of Putin's administration, since 2009, has resulted in the stagnation of the economy, especially in the hinterlands, with few signs of a possible turnaround. What accounted for these changes in Russia? Sergey Aleksashenko, a former top Russian finance official and then private businessman, lays the blame squarely on Putin himself, even more than external factors such as the sharp fall in oil prices or Western sanctions after Russia's annexation of Crimea in 2014. In his relentless drive to consolidate power in his own hands, Aleksashenko writes, Putin has destroyed the very idea of competition for political power. He has done so by systematically undercutting basic political institutions of the post-Soviet Russian state, including independent power centers such as the parliament, the judiciary, and a free media. In the economic realm, Putin effectively undermined Russia's still-emerging and very fragile system for protecting property rights—the basis of all economic activity. This in turn caused a sharp decline in private investment and thus contributed to the long-term economic slowdown. One result of Putin's rule was the destruction of the emerging checks and balances system in Russia, and that would be a major problem for Russia if and when it decides to become a "normal" democratic country based on Western values. In describing how all this happened, Aleksashenko's book offers universal lessons in the necessity of checks and balances in any political system—as well as in the importance of vibrant political institutions for economic growth.
This book presents a 360-degree picture of the world of insects and explores how their existence affects our lives: the "good, bad, and ugly" aspects of their interactions with humankind. It provides a lucid introductory text for beginning undergraduate students in the life sciences, particularly those pursuing beginner courses in entomology, agriculture, and botany.
Proceedings of the Third International Conference on Advanced Composite Materials and Technologies for Aerospace Applications held on May 13-16, 2013, Wrexham, North Wales, United Kingdom
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