Klassisk mekanik

Energy and environmental sustainability have triggered a worldwide interest in the field of the transportation network and industrial activity. Friction consumes approximately one-fifth of the total energy utilized in machinery systems. One-third of all energy is spent only on overcoming friction. Tribology is the science of lubrication, friction, and wear deals with the prevention of wear and tear of surfaces that move relative to one another under load. The term tribology was initially coined by Jost in 1966. The term comes from the Greek word tribos, which means "to rub," or "the science dealing with the rubbing of surfaces." Therefore, Friction and wear can also be termed lubrication science. Tribological interactions consume around 23% of the world's total energy usage. About 20% is used to overcome friction whereas 3% is used to re-fix worn components and spare equipment that have failed due to wear and wear- related problems. Energy losses due to friction and wear can be decreased by 40% in the long term (15 years) and by 18% in the short term by utilizing new surfaces, materials, and lubrication technologies. Reduction in wear and friction can enhance the life period of automobiles, machines, and other equipment around the world. In the long run, these savings would be equal to 1.4 percent of global GDP and about 8.7% of overall energy use on a worldwide scale. Hence, a vast variety of innovative technological solutions for reducing friction and wear had been advised, yet have not been widely adopted. Efficient coolants and lubricants are required by rising energy needs, precision manufacturing, miniaturization, nuclear regulations, and critical economies. Considering the negative impacts of friction and wear, lubricants play a key role in reducing these negative impacts on tribological processes. Lubricants also reduce the temperature in tribomechanical systems and enhance the performance of the system. All types of maintenance incorporate lubrication as a critical component of the whole procedure. In mechanical systems, consistent performance and energy-saving are the foremost demand for an eco-friendly lubricant. The physio-chemical relations between the molecules of lubricant, material surfaces, and the environment causes lubrication in the system [

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

In this book, we proposed velocity-free localization methods for acoustic and microseismic sources. This method does not require predetermination of wave velocity, which is a dynamically adjusted free real-time parameter. These methods solve the problem of large localization error caused by the difference between measured wave velocity and actual wave velocity in the source area and greatly improve the positioning accuracy.They are suitable for complex structures where the wave velocity changes dynamically in time and space, such as mines, bridges, buildings, pavements, loaded mechanical structures, dams, geothermal mining, oil extraction, and other engineering fields. This book includes progress in the development of localization methods, factors affecting the accuracy of source localization, analytical methods without the pre-measured wave velocity, velocity-free numerical methods for localizing acoustic sources, combined optimal velocity-free localization methods, velocity-free source localization considering complex paths of spatial structures, and theories as well as some cases of engineering applications of these methods.

This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone!

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

With An Appendix, Treating Of The Vital And Mental Applications Of The Doctrine.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

Biodiesel, the sustainable fuel of the future, holds the key to a cleaner, greener world. Advanced Biodiesel - Technological Advances, Challenges, and Sustainability Considerations takes you on a compelling journey through cutting-edge advancements in biodiesel technology, offering an unparalleled exploration of its production, refining, and transformative applications. This book unveils the collective wisdom and vision of pioneers in the field who are shaping the future of sustainable energy. Whether you are a seasoned researcher, an aspiring scientist, or simply an eco-conscious individual, this book is an invaluable resource to inspire and guide your efforts to reduce our reliance on fossil fuels and pave the way for a more sustainable, environmentally responsible world. Discover the future of energy; embrace Advanced Biodiesel - Technological Advances, Challenges, and Sustainability Considerations today and join the movement towards a brighter, cleaner tomorrow.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

Organizational Agility1. The Need for Organizational AgilityIn order to succeed, organizations need to be able to adapt to a constantly changing environment. To meet these changes, organizations need to be agile. Agility is the ability to adapt to change easily. Organizational agility is the set of policies and processes that organizations use to manage change and adapt to it.Organizational agility is important because it provides organizations with the following benefits:· Improved performance: Agile organizations are more efficient at identifying and capitalizing on new opportunities and at outperforming their competitors.· Improved communication: Agile organizations are better able to communicate effectively between employees and with their customers.· Increased creativity and innovation: Agile organizations encourage new ideas and support their implementation.· Satisfied employees: Agile organizations provide employees with opportunities to find meaning and satisfaction in their work.2. Elements of Organizational AgilityOrganizational agility is a complex concept that encompasses a number of elements. Some of these elements include:· Cultural change: To promote organizational agility, organizations need to develop a culture that encourages acceptance and adaptation to change.· Leadership: Leaders play a key role in creating a culture of agility. They need to be open to new ideas and willing to take risks.· Employee empowerment: Employees need to be empowered to make decisions and take action. This requires a clear understanding of roles and responsibilities, as well as the trust and support of leaders.· Continuous learning: Organizations need to create a culture of continuous learning. This requires providing employees with opportunities to develop new skills and knowledge.· Technology: Technology can play a role in supporting organizational agility. For example, technology can be used to collect and analyze data, which can help organizations identify trends and make informed decisions.

"Fluid Dynamics" is a comprehensive guide to the principles and applications of fluid dynamics in engineering and environmental science. It covers topics such as fluid statics, kinematics, conservation laws, boundary layer theory, pipe flow, open channel flow, and more. Packed with case studies, experimental techniques, and future directions, this book is an essential resource for anyone interested in the fascinating world of fluid dynamics.

This book presents fundamental theory of shock and detonation waves as well as selected studies in detonation research in Japan, contributed by selected experts in safety research on explosives, development of industrial explosives, and application of explosives. It also reports detonation research in Japan featuring industrial explosives that include ammonium nitrate-based explosives and liquid explosives.Intended as a monographic-style book, it consistently uses technical terms and symbols and creates organic links between various detonation phenomena in application of explosives, fundamental theory of detonation waves, measurement methods, and individual studies. Among other features, the book presents a historical perspective of shock wave and detonation research in Japan, pedagogical materials for young researchers in detonation physics, and an introduction to works in Japan, including equations of state, which are worthy of attention but about which very little is known internationally. Further, the concise pedagogical chapters also characterize this book as a primer of detonation of condensed explosives and help readers start their own research.

One of the main unanswered question of modern Physics is "How does gravity behave at small scales?". The aim of this thesis is to illustrate in a comprehensive but accessible way how to look for deviations from Einstein's theory of General Relativity in this regime, looking at the simplest celestial bodies: static and spherically symmetric ones.With a conservative and bottom-up approach, at smaller scales the first corrections to the action of General Relativity are generally considered to be terms quadratic in the curvature tensors; while these modifications do not cure the inconsistency between gravity and quantum mechanics, the solutions of this theory are plausible candidates to be the first-order corrections of the classical ones.Even with such simple modifications, a striking picture emerges from the study of isolated objects: the unique Schwarzschild solution of General Relativity is only a rare bird in the set of solutions, with non-Schwarzschild black holes, wormholes and naked singularities appearing as possible substitutes.Tailored to graduate students and researchers entering this field, this thesis shows how to construct these new solutions from action principles, how to characterize their metric, how to study their physical properties, such as their stability or Thermodynamics, and how to look for phenomenological signatures.

Explore the harmonies of society with 'Psychoacoustic Sociology' by Dean Aamond, Ph.D. Unveil the intricate interplay of sound, culture, technology, and politics, transcending traditional disciplines to reveal the societal symphony through a psychoacoustic lens.