Bridge Of Waves

Music is, in one sense, merely a series of fleeting vibrations that arise and subside. How could it be that something so insubstantial fills us, and calms us, and makes us weep? Because, says W. A. Mathieu, music bridges mind and heart, self and other, and affirms our place in the world. Everyone uses the bridge of music, from casual listeners to devoted professionals. Mathieu's delightful and trenchant prose asks you to question what music is, how it works, and how to understand its value in your life, in the life of your community, and in the evolution of the cosmos.

This book presents a comprehensive theoretical study of the electromagnetic eigenwaves propagating perpendicular to the axis of symmetry in various cylindrical waveguide-structures filled with magneto-active plasma. It is the second, updated and significantly expanded edition of our book “Surface Flute Waves in Plasmas. Theory and Applications”, published in 2014 in the “Springer Series on Atomic, Optical, and Plasma Physics”. First, the text is complemented by a study of the wave energy rotation around the axis of the waveguides. Second, excitation of these waves by an electron beam gyrating around the axis is investigated in detail. “Surface waves” means that these waves only propagate along plasma surfaces and not in uniform infinite plasmas. Their wave amplitudes decrease with going away from the plasma boundary into the plasma depth. “Flute” means that the axial wavenumbers kz of the waves in plasma cylinders are assumed to be zero, and the waves only propagate in azimuthal direction. In this case, the surfaces of constant density resemble fluted Greek columns. However, the presence of a small but finite kz can be taken into account by the method of successive approximations, using the theory of surface flute waves as zeroth approach. A variety of present applications of surface waves and possible future applications are also included. The book applies to both professionals dealing with physical and technological problems of confined plasmas and to graduate and post-graduate students specializing in the fíelds of electrodynamics, plasma physics and related applications.

Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations contains lectures and papers presented at the Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), held in Sapporo, Hokkaido, Japan, April 11–15, 2021. This volume consists of a book of extended abstracts and a USB card containing the full papers of 571 contributions presented at IABMAS 2020, including the T.Y. Lin Lecture, 9 Keynote Lectures, and 561 technical papers from 40 countries. The contributions presented at IABMAS 2020 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of maintenance, safety, management, life-cycle sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle sustainability, standardization, analytical models, bridge management systems, service life prediction, maintenance and management strategies, structural health monitoring, non-destructive testing and field testing, safety, resilience, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, and application of information and computer technology and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on maintenance, safety, management, life-cycle sustainability and technological innovations of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including engineers, researchers, academics and students from all areas of bridge engineering.

In the bestselling tradition of The Perfect Storm and The Finest Hours, “an exquisitely written and dramatic book…a literary page-turner” (Doug Stanton, #1 New York Times bestselling author of Horse Soldiers)—the 2015 mysterious disappearance of the SS El Faro, a gigantic American cargo ship that sank in the Bermuda Triangle, taking with it thirty-three lives. On October 1, 2015, the SS El Faro, a massive American cargo ship disappeared in Hurricane Joaquin, a category 4 storm. The ship, its hundreds of shipping containers, and its entire crew plummeted to the bottom of the ocean, three miles down. It was the greatest seagoing US merchant marine shipping disaster since World War II. The massive ship had a seasoned crew, state-of-the-art navigation equipment, and advance warning of the storm. It seemed incomprehensible that such a ship could sink so suddenly. How, in this day and age, could something like this happen? Relying on Coast Guard inquest hearings, as well as on numerous interviews, George Michelsen Foy brings us “the most insightful exploration of this unthinkable disaster” (Outside), a story that lasts only a few days, but which grows almost intolerably suspenseful as deep-rooted flaws leading to the disaster inexorably link together and worsen. We see captain, engineers, and crew fight for their lives, and hear their actual words (as recorded on the ship’s black box) while the hurricane relentlessly tightens its noose around the ship. We watch, minute by minute, all that is happening on board—the ship’s mysterious tilt to one side, worried calls to the engine room, ship-to-shore reports, the courage of the men and women as they fight to survive, and the berserk ocean’s savage consumption of the massive hull. And through it all, the pain and ultimate resilience of the families of El Faro’s crew. Now with a new afterword, this “tour de force of nautical expertise” (Ocean Navigator) is a masterwork of stunning power.