Résultats de recherche de titre
Articles 10321 à 10340 sur 11977
Numerical Methods in Photonics (Optical Sciences and Applications of Light #1)
Par Niels Gregersen, Andrei V. Lavrinenko, Jesper Lægsgaard, Frank Schmidt, Thomas Søndergaard. 2015
Simulation and modeling using numerical methods is one of the key instruments in any scientific work. In the field of…
photonics, a wide range of numerical methods are used for studying both fundamental optics and applications such as design, development, and optimization of photonic components. Modeling is key for developing improved photonic devices and reducing development time and cost. Choosing the appropriate computational method for a photonics modeling problem requires a clear understanding of the pros and cons of the available numerical methods. Numerical Methods in Photonics presents six of the most frequently used methods: FDTD, FDFD, 1+1D nonlinear propagation, modal method, Green’s function, and FEM. After an introductory chapter outlining the basics of Maxwell’s equations, the book includes self-contained chapters that focus on each of the methods. Each method is accompanied by a review of the mathematical principles in which it is based, along with sample scripts, illustrative examples of characteristic problem solving, and exercises. MATLAB® is used throughout the text. This book provides a solid basis to practice writing your own codes. The theoretical formulation is complemented by sets of exercises, which allow you to grasp the essence of the modeling tools.Plastic Optical Fiber Sensors: Science, Technology and Applications (Series in Fiber Optic Sensors)
Par Marcelo M. Werneck, Regina Célia S. B. Allil. 2020
Plastic Optical Fiber Sensors cover the fundamentals and applications of a new class of fiber sensors. With contributions from leading…
academics in the area, this book covers the theory of plastic optical fiber sensors or (POFs), as well as applications in oil, gas, biotechnology, and energy fields. Using multiple examples, the editors showcase the advantageous characteristics of POFs, such as ease of handling, large diameter, inexpensive peripheral components and simple termination tools. By doing so, the editors assert that there has been a proliferation of the use of POFs in new consumer products. The book also highlights uses for building various products, such as a POF sensor for oil trucker valve monitoring, a monitoring system for high voltage substation switch, an oil leaking sensor for offshore platforms and a solar tracker for illumination. Including over 300 black and white images, this book would be highly beneficial for professionals in manufacturing as well as academics in universities, particularly those who use optical fiber sensors on a regular basis.Signal Processing in Magnetic Resonance Spectroscopy with Biomedical Applications
Par Dzevad Belkic, Karen Belkic. 2010
Addressing the critical need in clinical oncology for robust and stable signal processing in magnetic resonance spectroscopy (MRS), Signal Processing…
in Magnetic Resonance Spectroscopy with Biomedical Applications explores cutting-edge theory-based innovations for obtaining reliable quantitative information from MR signals for cancer diagnostics. By defining the natural framework of signal processing using the well-established theory of quantum physics, the book illustrates how advances in signal processing can optimize MRS. The authors employ the fast Padé transform (FPT) as the unique polynomial quotient for the spectral analysis of MR time signals. They prove that residual spectra are necessary but not sufficient criteria to estimate the error invoked in quantification. Instead, they provide a more comprehensive strategy that monitors constancy of spectral parameters as one of the most reliable signatures of stability and robustness of quantification. The authors also use Froissart doublets to unequivocally distinguish between genuine and spurious resonances in both noise-free and noise-corrupted time signals, enabling the exact reconstruction of all the genuine spectral parameters. They show how the FPT resolves and quantifies tightly overlapped resonances that are abundantly seen in MR spectra generated using data from encoded time signals from the brain, breast, ovary, and prostate. Written by a mathematical physicist and a clinical scientist, this book captures the multidisciplinary nature of biomedicine. It examines the remarkable ability of the FPT to unambiguously quantify isolated, tightly overlapped, and nearly confluent resonances.Electron-Ion-Plasma Modification of a Hypoeutectoid Al-Si Alloy
Par Dmitrii Zaguliaev, Victor Gromov, Sergey Konovalov, Yurii Ivanov. 2020
Electron-Ion-Plasma Modification of a Hypereutectic Al-Si Alloy details theoretical and experimental research and computer simulation of structural phase transformations in…
AlSi10Mn2Ni Silumin on different scale levels under electroexplosion alloying, electron beam processing and electron-plasma alloying at the nanolevel in order to create new materials. The authors summarize and analyze more than 10 years of research on the electron-ion-plasma effect on strength properties and structure-phase states’ transformations of hypoeutectic Silumin. Key Features: Details physical and mathematical models of mechanisms of surface layer hardening under conditions of varying energy effects Offers insights into improved strength characteristics of Silumin Explores optimal processing modes for increased strength and improved tribological characteristics This book is a valuable resource to researchers and engineers involved with the modification of light alloy surfaces for the automotive and aeronautical industry.Understanding the Path from Classical to Quantum Mechanics (SpringerBriefs in Physics)
Par Jaroslav Zamastil. 2023
The book is about the transition from classical to quantum mechanics, covering the historical development of this great leap, and…
explaining the concepts needed to understand it at a level suitable for undergraduate students. The first part of the book summarizes classical electrodynamics and the Hamiltonian formulation of classical mechanics, the two elements of classical physics which are crucial for understanding the classical to quantum transition. The second part loosely traces the historical development of the classical to quantum transition, starting with Einstein’s 1916 derivation of the Planck radiation law, continuing with the Ladenburg-Kramers-Born-Heisenberg dispersion theory and ending with Heisenberg’s magical 1925 paper which established quantum mechanics. The purpose of the book is partly historical, partly philosophical, but mainly pedagogical. It will appeal to a wide audience, from undergraduate students, for whom it can serve as a preparatory or supplementary text to standard textbooks, to physicists and historians interested in the historical development of science.This book explores quantum computing as a transformative technology and its applications in cryptography, teleportation, IoT, AI, Blockchain, and the…
futurist concept of quantum internet. It explains the fundamentals of quantum computing and how it’s different from classic computing. The challenges facing quantum computing will be discussed, and the types of quantum computing will be introduced and explained. The concept and types of Qubit and its implications on quantum computing applications will be explained.El Hierro Island (Active Volcanoes of the World)
Par Pablo J. González. 2023
This book presents an in-depth review of El Hierro Island, the youngest and most southwesterly volcano of the Canary Islands.…
In October 2011, a submarine eruption started offshore El Hierro Island. The 2011–2012 El Hierro eruption has probably been the best monitored and studied submarine eruption to date and has sparked interest in the study of this young ocean island volcano. During the last decade, multidisciplinary investigations, e.g., on the geological and volcanological character of its past and latest onshore and offshore eruptions, the geophysical and geochemical signatures of its magmatic plumbing system structure and dynamics, as well as the bio-geophysical interactions and consequences of submarine eruptions in the ocean, have been conducted. This book provides an authoritative review of many of these scientific advances as well as multiple remaining unknowns for the study of El Hierro Island and its 2011–2012 submarine eruption. Such knowledge should be of great interest to specialists not only in the Canary Islands volcanism but also in similar ocean island intraplate volcanoes.This book highlights the findings and achievements in the major research plan “Detection and Interaction of Single Quantum States” funded…
by the National Natural Science Foundation of China (NSFC). The 8-year plan started in 2011 and consisted of 107 projects conducted by Chinese universities and research institutes. The book covers the plan's research background, achievements, and follow-up prospects. The plan aimed to tackle one of the major challenges for researchers worldwide—to establish precise detection and control of single quantum states in time, space, energy, and momentum. The plan integrated precise detection means with the ultrahigh resolution of time, space, and energy, under extreme conditions such as ultrahigh vacuum, ultralow temperature, high magnetic field, and ultrahigh pressure, using interdisciplinary research methods in physics, chemistry, informatics, and materials science. The book focuses on the exploration of new phenomena, theories, and concepts of single quantum states, describes new techniques and methods of single quantum states, and presents the purification and construction of single-quantum-state systems. It is a concise and valuable source of information for researchers in quantum science and graduate students interested in the research field.Charged Particle and Photon Interactions with Matter: Chemical, Physicochemical, and Biological Consequences with Applications
Par A. Mozumder, Y. Hatano. 2004
Charged Particle and Photon Interactions with Matter offers in-depth perspectives on phenomena of ionization and excitation induced by charged particle…
and photon interactions with matter in vivo and in vitro. This reference probes concepts not only in radiation and photochemistry, but also in radiation physics, radiation biochemistry, and radiatioBasics of Atmospheric Dynamics
Par R. N. Keshavamurty. 2022
The book discusses the basic of atmospheric dynamics where the curved surface of the earth and its rotation around its…
own axis plays very important roles. The emphasis is on basic physical concepts and the interpretation of equations and the different terms therein. Note: T&F does not sell or distribute the hardback in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.Nonequilibrium Statistical Mechanics of Heterogeneous Fluid Systems
Par Andrei G. Bashkirov. 1995
There is a wide variety of heterogeneous fluid systems that possess interphase surfaces. This monograph is devoted to pioneering studies…
in nonequilibrium statistical mechanics of such systems. Starting from the Liouville equation, the equations of surface hydrodynamics are derived with allowance for discontinuities of thermodynamic parameters of interphase boundaries. Brownian motion of a large solid particle in a fluid and nucleation are treated as results of fluctuations of flows across particle surfaces. With the use of the Gibbs method, a shock wave in a gas is considered as a sort of an interphase surface, and the surface tension of a shock front is introduced for the first time.Accelerating and Vortex Laser Beams
Par V. Kotlyar, A. A. Kovalev. 2019
This book gives insight into the theoretical backgrounds of optical vortices and their propagation in free space and simple optical…
systems. The author’s theoretical analysis allows full comprehension of recent results and allows a bridge between the mentioned topics. For example, there is a solution for an accelerating beam propagating along an almost half-circle, obtained from a solution for an asymmetric vortex Bessel mode. And vice versa, there is a solution for an optical vortex with accelerating focusing, obtained from a solution for a two-dimensional accelerating Pearcey beam. The book is intended for graduate and postgraduate students studying optics or wave physics.Photovoltaic Engineering Handbook
Par F Lasnier. 1990
The Photovoltaic Engineering Handbook is the first book to look closely at the practical problems involved in evaluating and setting…
up a photovoltaic (PV) power system. The author's comprehensive knowledge of the subject provides a wealth of theoretical and practical insight into the different procedures and decisions that designers need to make. Unique in its coverage, the book presents technical information in a concise and simple way to enable engineers from a wide range of backgrounds to initiate, assess, analyze, and design a PV system. It is beneficial for energy planners making decisions on the most appropriate system for specific needs, PV applications engineers, and anyone confronting the practical difficulties of setting up a PV power system.Advanced Classical Mechanics
Par Bijan Bagchi. 2017
This book is designed to serve as a textbook for postgraduates, researchers of applied mathematics, theoretical physics and students of…
engineering who need a good understanding of classical mechanics. In this book emphasis has been placed on the logical ordering of topics and appropriate formulation of the key mathematical equations with a view to imparting a clear idea of the basic tools of the subject and improving the problem solving skills of the students. The book provides a largely self-contained exposition to the topics with new ideas as a smooth continuation of the preceding ones. It is expected to give a systematic and comprehensive coverage of the methods of classical mechanics.This handbook series includes several naturally occurring chemicals that exhibit biological activity. These chemicals are derived from plants, insects, and…
several microorganisms. Volume I of this series is covers the theory and practice of the strategies for pest control and methods for detection.Moreover, it presents extensive tables that provide the information you need to select the most appropriate bioassay for a particular plant growth regulator or hormone. In addition to the chapters on bioassays, Volume I provides a solid introduction to the theory and practice of natural pesticide use, including in-depth discussions of integrated management systems for weed and pest control, the state-of-the-art use of computers in pest management, and allelochemicals as natural protection. Guidelines on toxicological testing and EPA regulation of natural pesticides are also detailed.Silicon Earth: Introduction to Microelectronics and Nanotechnology, Second Edition
Par John D. Cressler. 2015
We are in the center of the most life-changing technological revolution the Earth has ever known. In little more than…
65 years, an eye-blink in human history, a single technological invention has launched the proverbial thousand ships, producing the most sweeping and pervasive set of changes ever to wash over humankind; changes that are reshaping the very core of human existence, on a global scale, at a relentlessly accelerating pace. And we are just at the very beginning. Silicon Earth: Introduction to Microelectronics and Nanotechnology introduces readers with little or no technical background to the marvels of microelectronics and nanotechnology, using straightforward language, an intuitive approach, minimal math, and lots of pictures. The general scientific and engineering underpinnings of microelectronics and nanotechnology are described, as well as how this new technological revolution is transforming a broad array of interdisciplinary fields, and civilization as a whole. Special "widget deconstruction" chapters address the inner workings of ubiquitous micro/nano-enabled pieces of technology, such as smartphones, flash drives, and digital cameras. Completely updated and upgraded to full color, the Second Edition: Includes new material on the design of electronic systems, the future of electronics, and the societal impact of micro/nanotechnology Provides new widget deconstructions of cutting-edge tech gadgets like the GPS-enabled smartwatch Adds end-of-chapter study questions and hundreds of new color photos Silicon Earth: Introduction to Microelectronics and Nanotechnology, Second Edition is a pick-up-and-read-cover-to-cover book for those curious about the micro/nanoworld, as well as a classroom-tested, student-and-professor-approved text ideal for an undergraduate-level university course. Lecture slides, homework examples, a deconstruction project, and discussion threads are available via an author-maintained website.Secrets of the Moon: Understanding and Analysing the Lunar Surface
Par Gilbert Fielder. 2022
Secrets of the Moon: Understanding and Analysing the Lunar Surface provides a unique account of the origin of key features…
on the lunar surface. Containing historical accounts and the latest observations from the field, in addition to exciting data from the Apollo manned missions, it describes the development of our current understanding of our Moon. It also explores the fracturing of the Moon, a topic not explored in other literature in the area, and contains a statistical treatment of the smaller craters of the Moon, as well as a geological treatment of the larger craters. This moderately technical account is designed to clarify and update the general thinking on the nature and origin of the most important lunar surface features for both undergraduate and research students. It may also be read by the professional scientist, especially the astronomer and the geologist who has found little time to study the Moon’s topography, in addition to the lunar amateur astronomer and even the dedicated layman with a keen interest in lunar science. The book excludes nearly all mathematical symbols in order to remain accessible to those without a formal education in the area. Key Features: Authored by an expert in the area Presents a comprehensive account of the lunar surface, from historical observations to the NASA Apollo manned missions and the latest observations and data in the field Includes a statistical and geological treatment of the craters Dr. Gilbert Fielder is Reader Emeritus at Lancaster University, United Kingdom. He performed extended teaching at Lancaster University on Planetary Science and introduced a new degree course on Remote Sensing. Prior to this, he was Principal Investigator in NASA’s Heat Capacity Mapping Programme, while continuing to head the Lunar and Planetary Unit at Lancaster until retirement. Dr. Fielder has authored several books, and presented many BBC and ITA television news programmes, as well as popular programmes with Sir Patrick Moore (on the BBC’s "The Sky at Night") and, on the occasion of the first landing of astronauts on the Moon, with David Frost as Chairman in a special programme.From the New York Times bestselling author of Extraterrestrial comes a mind-expanding new book explaining why becoming an interstellar species is imperative for humanity’s…
survival and detailing a game plan for how we can settle among the stars. In the New York Times bestseller Extraterrestrial, Avi Loeb, the longest serving Chair of Harvard’s Astronomy Department, presented a theory that shook the scientific community: our solar system, Loeb claimed, had likely been visited by a piece of advanced alien technology from a distant star. This provocative and persuasive argument opened millions of minds internationally to the vast possibilities of our universe and the existence of intelligent life beyond Earth. But a crucial question remained: now that we are aware of the existence of extraterrestrial life, what do we do next? How do we prepare ourselves for interaction with interstellar extraterrestrial civilization? How can our species become interstellar?Now Loeb tackles these questions in a revelatory, powerful call to arms that reimagines the idea of contact with extraterrestrial civilizations. Dismantling our science-fiction fueled visions of a human and alien life encounter, Interstellar provides a realistic and practical blueprint for how such an interaction might actually occur, resetting our cultural understanding and expectation of what it means to identify an extraterrestrial object. From awe-inspiring searches for extraterrestrial technology, to the heated debate of the existence of Unidentified Aerial Phenomena, Loeb provides a thrilling, front-row view of the monumental progress in science and technology currently preparing us for contact. He also lays out the profound implications of becoming—or not becoming—interstellar; in an urgent, eloquent appeal for more proactive engagement with the world beyond ours, he powerfully contends why we must seek out other life forms, and in the process, choose who and what we are within the universe.Combining cutting edge science, physics, and philosophy, Interstellar revolutionizes the approach to our search for extraterrestrial life and our preparation for its discovery. In this eye-opening, necessary look at our future, Avi Loeb artfully and expertly raises some of the most important questions facing us as humans, and proves, once again, that scientific curiosity is the key to our survival.Relativistic and Non-Relativistic Quantum Mechanics: Both at Once (Undergraduate Lecture Notes in Physics)
Par Abhishek Singh, Luis Grave de Peralta, Maricela Fernández Lozada, Hira Farooq, Gage Eichman, Gabrielle Prime. 2023
Currently, relativistic quantum mechanics is considered an advanced topic only accessible to students who have already received considerable training in…
non-relativistic quantum mechanics. However, the authors believe that they have found an excellent pedagogic approach for simultaneously introducing both topics. This book is considered an Introductory Quantum Mechanics textbook that presents relativistic quantum mechanics to interested learners with no previous knowledge of it. The authors avoid utilization of the well-known Lorentz invariant equations. Additionally, they only refer to the Klein-Gordon and Dirac equations to justify the use of the Poveda-Poirier-Grave de Peralta (PPGP) equations, upon which this book is solely based (while sporadically referring to well-known results obtained using the Klein-Gordon and Dirac equations to avoid unnecessary complications in an introductory book). There also exist two complementary Schrödinger-like and Pauli-like PPGP equations, the solutions of which are identical to the respective solutions of the Klein-Gordon and Dirac equations associated with negative kinetic energies. These equations’ relation to the existence of antiparticles is discussed. The intended readership is undergraduate physics, chemistry, and engineering students with no previous knowledge of quantum mechanics, as well as graduate students and professionals interested in the subject.Futuristic Communication and Network Technologies: Select Proceedings of VICFCNT 2021, Volume 2 (Lecture Notes in Electrical Engineering #995)
Par Shien-Kuei Liaw, N. Subhashini, Morris. A. G. Ezra. 2023
This book presents select proceedings of the Virtual International Conference on Futuristic Communication and Network Technologies (VICFCNT 2021). It covers…
various domains in communication engineering and networking technologies. This volume comprises recent research in areas like cyber-physical systems, acoustics, speech & video signal Processing, and the Internet of Things. This book is a collated work of academicians, researchers, and industry personnel from the international arena. This book will be useful for researchers, professionals, and engineers working in the core areas of electronics and communication.