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Variational Analysis and Aerospace Engineering: Mathematical Challenges for Aerospace Design
by Giuseppe Buttazzo Aldo FredianiThis volume consists of papers presented at the Variational Analysis and Aerospace Engineering Workshop II held in Erice, Italy in September 2010 at the International School of Mathematics "Guido Stampacchia". The workshop provided a platform for aerospace engineers and mathematicians (from universities, research centers and industry) to discuss the advanced problems requiring an extensive application of mathematics. The presentations were dedicated to the most advanced subjects in engineering and, in particular to computational fluid dynamics methods, introduction of new materials, optimization in aerodynamics, structural optimization, space missions, flight mechanics, control theory and optimization, variational methods and applications, etc. This book will capture the interest of researchers from both academia and industry.
Variational Analysis and Aerospace Engineering
by Aldo Frediani Bijan Mohammadi Olivier Pironneau Vittorio CipollaThe Variational Analysis and Aerospace Engineering conference held in Erice, Italy in September 2007 at International School of Mathematics, Guido Stampacchia provided a platform for aerospace engineers and mathematicians to discuss the problems requiring an extensive application of mathematics. This work contains papers presented at the workshop.
A Variational Approach to Nonsmooth Dynamics
by Samir AdlyThis brief examines mathematical models in nonsmooth mechanics and nonregular electrical circuits, including evolution variational inequalities, complementarity systems, differential inclusions, second-order dynamics, Lur'e systems and Moreau's sweeping process. The field of nonsmooth dynamics is of great interest to mathematicians, mechanicians, automatic controllers and engineers. The present volume acknowledges this transversality and provides a multidisciplinary view as it outlines fundamental results in nonsmooth dynamics and explains how to use them to study various problems in engineering. In particular, the author explores the question of how to redefine the notion of dynamical systems in light of modern variational and nonsmooth analysis. With the aim of bridging between the communities of applied mathematicians, engineers and researchers in control theory and nonlinear systems, this brief outlines both relevant mathematical proofs and models in unilateral mechanics and electronics.
Variational Methods for Machine Learning with Applications to Deep Networks
by Lucas Pinheiro Cinelli Matheus Araújo Marins Eduardo Antônio Barros da Silva Sérgio Lima NettoThis book provides a straightforward look at the concepts, algorithms and advantages of Bayesian Deep Learning and Deep Generative Models. Starting from the model-based approach to Machine Learning, the authors motivate Probabilistic Graphical Models and show how Bayesian inference naturally lends itself to this framework. The authors present detailed explanations of the main modern algorithms on variational approximations for Bayesian inference in neural networks. Each algorithm of this selected set develops a distinct aspect of the theory. The book builds from the ground-up well-known deep generative models, such as Variational Autoencoder and subsequent theoretical developments. By also exposing the main issues of the algorithms together with different methods to mitigate such issues, the book supplies the necessary knowledge on generative models for the reader to handle a wide range of data types: sequential or not, continuous or not, labelled or not. The book is self-contained, promptly covering all necessary theory so that the reader does not have to search for additional information elsewhere. Offers a concise self-contained resource, covering the basic concepts to the algorithms for Bayesian Deep Learning;Presents Statistical Inference concepts, offering a set of elucidative examples, practical aspects, and pseudo-codes;Every chapter includes hands-on examples and exercises and a website features lecture slides, additional examples, and other support material.
Variational Methods with Applications in Science and Engineering
by Kevin W. CasselThere is a resurgence of applications in which the calculus of variations has direct relevance. In addition to application to solid mechanics and dynamics, it is now being applied in a variety of numerical methods, numerical grid generation, modern physics, various optimization settings and fluid dynamics. Many applications, such as nonlinear optimal control theory applied to continuous systems, have only recently become tractable computationally, with the advent of advanced algorithms and large computer systems. This book reflects the strong connection between calculus of variations and the applications for which variational methods form the fundamental foundation. The mathematical fundamentals of calculus of variations (at least those necessary to pursue applications) is rather compact and is contained in a single chapter of the book. The majority of the text consists of applications of variational calculus for a variety of fields.
Variations on Media Thinking (Posthumanities #52)
by Siegfried ZielinskiA diverse, enriching volume of media analysis from a pioneering thinker in the field Expanding on Siegfried Zielinski&’s groundbreaking inquiry into &“deep time&” of the media, the essays in Variations on Media Thinking further the eminent media theorist&’s unique method of expanded hermeneutics, which means for him interpreting technical artifacts as essential parts of our cultural lives. Covering such topics as the televisualized &“Holocaust,&” the ubiquity of media today, the Internet, the genealogy of sound art, and history&’s first hacker movement, these essays further diversify Zielinski&’s insight into the hidden layers of media development, which he first articulated in his pioneering work Deep Time of the Media.Including many previously untranslated and scarce essays, these &“written time machines&” open new lines of investigation for cultural scholars. From the automata of the Arabic-Islamic Renaissance (800–1200) to the largest and loudest techno-event ever, known as The Symphony of Sirens—which transformed Baku in 1922 into an immense music box of modern noise—Variations on Media Thinking covers Zielinski&’s inquiries since 1975. Richly illustrated and full of provocation, brilliant insight, and fascinating research, this volume is perfect for students of media archaeology, philosophy, and technology, as well as any adventurous, rigorous thinkers engaged with culture and media.
Varicella-zoster Virus: Genetics, Pathogenesis and Immunity (Current Topics in Microbiology and Immunology #438)
by Ann M. Arvin Jennifer F. Moffat Allison Abendroth Stefan L OliverThis edited volume provides insights about the molecular virology, pathoenesis of infection and host responses to varicella-zoster virus, which is a medically important human herpesvirus. The chapters not only discuss genetics and molecular evolution of the virus, but also new structure-based knowledge on the functions of viral glycoproteins. Further, the authors illustrate how mechanisms from the virus are used to take over and remodel host cells during pathogeneis. These mechanisms also enable viral modulation of host cells and evasion of the host immune response. Part of these evasion and survival strategies, is the reaction to triggered host cell responses like autophagy, the stress response, modulation of apoptosis and other cell death pathways. This hands-on knowledge is crucial for students and clinicians in Virology, Immunology, and Infectious Diseases.Chapter "Common features between stroke following varicella in children and stroke following herpes zoster in adults" is available open access under a Creative Commons Attribution 4.0 International License via Springerlink.com.
Varying Gravity
by Helge KraghThe main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences. The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac's hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past.
Vascular Biomechanics: Concepts, Models, and Applications
by T. Christian GasserThis textbook serves as a modern introduction to vascular biomechanics and provides the comprehensive overview of the entire vascular system that is needed to run successful vascular biomechanics simulations. It aims to provide the reader with a holistic analysis of the vascular system towards its biomechanical description and includes numerous fully through-calculated examples. Various topics covered include vascular system descriptions, vascular exchange, blood vessel mechanics, vessel tissue characterization, blood flow mechanics, and vascular tissue growth and remodeling. This textbook is ideally suited for students and researchers studying and working in classical and computational vascular biomechanics. The book could also be of interest to developers of vascular devices and experts working with the regulatory approval of biomedical simulations.Follows the principle of “learning by doing” and provides numerous fully through-calculated examples for active learning, immediate recall, and self-examination;Provides a holistic understanding of vascular functioning and the integration of information from different disciplines to enable students to use sophisticated numerical methods to simulate the response of the vascular system;Includes several case studies that integrate the presented material. Case studies address problems, such as the biomechanical rupture risk assessment of Abdominal Aortic Aneurysms, Finite Element analysis of structural and blood flow problems, the computation of wall stress and wall shear stress in the aorta.
The Vascular Flora of the Bosco della Mesola Nature Reserve (Geobotany Studies)
by Alessandro Alessandrini Giampaolo Balboni Lisa Brancaleoni Renato Gerdol Giovanni Nobili Mauro Pellizzari Filippo Piccoli Michele RavaglioliThe Bosco della Mesola represents one of the few remnants of coastal woodlands in Italy. A nature reserve was established in this area in 1977. No detailed checklists of the vascular flora of the nature reserve have been compiled since then. So, there was an urgent need to fill this gap. This book contains a critical updated checklist of the vascular flora in the Bosco della Mesola Nature Reserve. It also allows quantitative comparisons with a previous checklist dating back to the 1960s in order to detect temporal changes in the vascular flora over 60 years. We believe that this book represents a milestone for scientists and all people involved in nature conservation and management in this area and in similar territories in other countries. The readerships can also include high-school students and non-professional botany amateurs.
Vascular Lesions of the Orbit and Face
by Michael T. YenThis book provides a concise yet comprehensive source of information on the classification, evaluation, diagnosis, and management of vascular lesions of the orbit and face. It highlights recent technological innovations and new treatments that have significantly improved the ability to accurately evaluate and successfully treat these lesions with reduced complications. Some of these advances include new imaging modalities, intravascular and intralesional treatment approaches, photodynamic therapy, and additional medical therapies. Many of these advances have led to paradigm shifts in the understanding and management of vascular lesions of the orbit and face. This book, written by experts in the fields of ophthalmology, dermatology, diagnostic and interventional radiology, and oculoplastic surgery, features structured, in‐depth chapters that can also be quickly consulted as a reference guide. It is an excellent resource for those in training as well as seasoned practitioners wishing to acquaint themselves with the newest diagnostic and treatment techniques for orbital vascular lesions.
Vascular Mechanobiology in Physiology and Disease (Cardiac and Vascular Biology #8)
by Markus Hecker Dirk J. DunckerThis volume of the series Cardiac and Vascular Biology presents the most relevant aspects of vascular mechanobiology along with many more facets of this fascinating, timely and clinically highly relevant field. Mechanotransduction, mechanosensing, fluid shear stress, hameodynamics and cell fate, are just a few topics to name. All important aspects of vascular mechanobiology in health and disease are reviewed by some of the top experts in the field. This volume, together with a second title on cardiac mechanobiology featured in this series, will be of high relevance to scientists and clinical researchers in the area of vascular biology, cardiology and biomedical engineering.
The Vascular System: Diagnostic Medical Sonography Series (Diagnostic Medical Sonography Ser.)
by Ann Marie KupinskiKupinski’s Diagnostic Medical Sonography: The Vascular System, 2nd Edition provides a current, comprehensive treatment of vascular sonography enhanced by six new chapters— Orientation to Ultrasound Scanning (1), Ultrasound Principles (2), Ergonomics: Avoiding Work-Related Injury (3), Sonography in the Venous Treatment Room (21), Evaluation of Penile Blood Flow (31), and Complementary Vascular Imaging (32). And an intregal part of the updated Diagnostic Medical Sonography Series, which includes new editions of Diagnostic Medical Sonography: Abdomen and Superficial Structures, Diagnostic Medical Sonography: Obstetrics and Gynecology, and Diagnostic Medical Sonography: The Vascular System, provides the right content at the right level for the right way to teach and learn.
The Vascular System (Diagnostic Medical Sonography Series)
by Ann Marie Kupinski Glen SchifrinPart of the highly regarded Diagnostic Medical Sonography series, Ann Marie Kupinski’s The Vascular System, 3rd Edition, thoroughly covers the core content students need to master in today’s rigorous sonography programs. Careful, collaborative editing ensures consistency across all three titles in this series: The Vascular System, Abdomen and Superficial Structures, and Obstetrics and Gynecology, providing the right content at the right level for both students and instructors.
Vasculopathies: Behavioral, Chemical, Environmental, and Genetic Factors (Biomathematical and Biomechanical Modeling of the Circulatory and Ventilatory Systems #8)
by Marc ThirietThis volume presents one of the clinical foundations of vasculopathies: the biological markers and risk factors associated with cardiovascular disease. A detailed biological and clinical framework is provided as a prerequisite for adequate modeling. Chapter 1 presents cardiovascular risk factors and markers, where the search for new criteria is aimed at improving early detection of chronic diseases. The subsequent chapters focus on hypertension, which involves the kidney among other organs as well as many agents, hyperglycemia and diabetes, hyperlipidemias and obesity, and behavior. The last of these risk factors includes altered circadian rhythm, tobacco and alcohol consumption, physical inactivity, and diet. The volumes in this series present all of the data needed at various length scales for a multidisciplinary approach to modeling and simulation of flows in the cardiovascular and ventilatory systems, especially multiscale modeling and coupled simulations. The cardiovascular and respiratory systems are tightly coupled, as their primary function is to supply oxygen to and remove carbon dioxide from the body's cells. Because physiological conduits have deformable and reactive walls, macroscopic flow behavior and prediction must be coupled to nano- and microscopic events in a corrector scheme of regulated mechanisms. Therefore, investigation of flows of blood and air in anatomical conduits requires an understanding of the biology, chemistry, and physics of these systems together with the mathematical tools to describe their functioning in quantitative terms.
A Vast Machine: Computer Models, Climate Data, and the Politics of Global Warming (Infrastructures)
by Paul N. EdwardsThe science behind global warming, and its history: how scientists learned to understand the atmosphere, to measure it, to trace its past, and to model its future.Global warming skeptics often fall back on the argument that the scientific case for global warming is all model predictions, nothing but simulation; they warn us that we need to wait for real data, “sound science.” In A Vast Machine Paul Edwards has news for these skeptics: without models, there are no data. Today, no collection of signals or observations—even from satellites, which can “see” the whole planet with a single instrument—becomes global in time and space without passing through a series of data models. Everything we know about the world's climate we know through models. Edwards offers an engaging and innovative history of how scientists learned to understand the atmosphere—to measure it, trace its past, and model its future.
The Vault: A Novel
by Boyd MorrisonNational bestselling author Boyd Morrison brings back Tyler Locke, who must race to stop a terrorist cell that has stolen an ancient text related to the tale of King Midas in this, "heart-thumping ride...not to be missed" (Steve Berry).Tyler Locke's routine commute on a Washington State ferry is interrupted by a chilling anonymous call: his father has been kidnapped, and a truck bomb is set to detonate on board in twenty minutes. When Tyler reaches the bomb on the boat's car deck, he's stunned to find classical languages expert Stacy Benedict waiting for him. She's received the same threat, and her sister has also been taken.In order to disarm the bomb, Tyler and Stacy must work together to solve an engineering puzzle--a puzzle written in ancient Greek. But preventing the explosion is only the first step; they soon learn the entire setup is a test created by a ruthless criminal who forces them to go on a seemingly impossible mission: uncover the legendary lost riches of King Midas.Tyler and Stacy have just five days to track down the gold. Armed with an ancient manuscript penned by brilliant Greek inventor Archimedes, they begin a quest to unravel a two-thousand-year-old mystery whose answer is hidden within the workings of a cryptic artifact: the Antikythera Mechanism, a device designed by Archimedes himself. To save their loved ones and prevent their captors from recovering a treasure that will finance unspeakable devastation, the two scramble to Italy, Germany, Greece, and finally to the streets of New York City in a race against the clock to find the truth behind the story of King Midas.The Vault combines an explosive premise and blistering pace with a fascinating exploration of one of history's most intriguing inventors and a brilliant reimagining of an ancient legend.
VBA für Office-Automatisierung und Digitalisierung
by Irene WeberVBA bietet das Potenzial, effektive Digitalisierungslösungen mit geringem Aufwand zu realisieren. “VBA für Office-Automatisierung und Digitalisierung" zeigt mit vielen Codebeispielen die Automatisierung von Excel, Word, Outlook, PowerPoint, SAP ERP und SOLIDWORKS und das Zusammenwirken dieser Systeme. Auch Webservices und Rest APIs werden mit VBA angesprochen und erschließen interessante Möglichkeiten bis hin zu KI. Das Buch erläutert wichtige Konzepte und gibt viele Tipps, um VBA-Anwendungen mit einfachen Mitteln unternehmenstauglich und administrierbar zu gestalten.
VBR Video Traffic Models (Focus Ser.)
by Savera Tanwir Harry G. PerrosThere has been a phenomenal growth in video applications over the past few years. An accurate traffic model of Variable Bit Rate (VBR) video is necessary for performance evaluation of a network design and for generating synthetic traffic that can be used for benchmarking a network. A large number of models for VBR video traffic have been proposed in the literature for different types of video in the past 20 years. Here, the authors have classified and surveyed these models and have also evaluated the models for H.264 AVC and MVC encoded video and discussed their findings.
VCO-Based Quantizers Using Frequency-to-Digital and Time-to-Digital Converters
by Mohammed Ismail Waleed Khalil Samantha YoderThis book introduces the concept of voltage-controlled-oscillator (VCO)-based analog-to-digital converters (ADCs). Detailed explanation is given of this promising new class of high resolution and low power ADCs, which use time quantization as opposed to traditional analog-based (i.e. voltage) ADCs.
VCSEL Industry: Communication and Sensing (The ComSoc Guides to Communications Technologies)
by Babu Dayal Padullaparthi Jim Tatum Kenichi IgaA hands-on reference to the technical, commercial, and industrial aspects of VCSEL technology In VCSEL Industry: Communication and Sensing, a team of distinguished researchers and manufacturing professionals deliver a thorough and practical reference guide to vertical-cavity surface-emitting lasers (VCSELs) for young entrepreneurs, investors, venture capitalists, and researchers. The authors offer comprehensive descriptions of the technology involved, as well as a robust exploration of the industry and commercial landscape in which VCSELs exist. In VCSEL Industry: Communication and Sensing, distinguished researchers and manufacturing professionals Dr. Padullaparthi Babu Dayal, Dr. Jim A Tatum and Prof. Kenichi Iga deliver a thorough and practical reference guide to vertical-cavity surface-emitting lasers (VCSELs) for young entrepreneurs, investors, venture capitalists, and researchers. The authors offer comprehensive descriptions of the technology involved, as well as a robust exploration of the industry and commercial landscape in which VCSELs exist. The book contains numerous illustrations and schematics of the anatomy of VCSEL product developments and an insightful discussion of the proliferation of VCSELs in photonics and optics. There is also a dedicated section on photoreceivers used for VCSEL-based data communications and sensing. VCSEL Industry: Communication and Sensing provides readers with an accessible, commercial perspective of an important technology while offering just enough technical detail to make sense of the subject. The book also includes: A thorough introduction to VCSELs, including discussions of semiconductor lasers, materials, wavelengths, and why VCSELs are attractive for photonics applications Comprehensive explorations of the VCSEL industry, including market demands, an industry landscape, descriptions of commercial products based on VCSELs, and business models Practical discussions of VCSELs for data communication, including high-speed VCSELs, gain and parasitic effects on bandwidth and speed, and form factors and standards In-depth examinations of VCSEL arrays for sensing, including high-power VCSELs in consumer electronics Perfect for early-career researchers, engineers, entrepreneurs, investors, and managers, VCSEL Industry: Communication and Sensing will also prove to be an invaluable addition to the libraries of executives from across the semiconductor industry.
Vector
by James AbelJoe Rush takes on a new terror, spawned in the Amazon rain forest, that threatens to bring the world to its knees in James Abel's latest bio-thriller, now in paperback.While studying new forms of malaria at an Amazon gold rush, Joe Rush's best friend and partner, Eddie Nakamura, disappears. Learning that many of the sick miners have also vanished, Rush begins a search for Eddie that takes him into the heart of darkness--where while battling for his life, he discovers a secret that may change the world. Thousands of miles away, sick people are starting to flood into U.S. hospitals. When the White House admits that it has received terrorist threats, cities across the Northeast begin to shut down. Rush and his team must journey from one of the most remote spots on Earth to one of the busiest, as the clock ticks toward a kind of annihilation not thought possible. They have even less time than they think to solve the mystery, for the danger--as bad as it is--is about to get even worse.
Vector and Tensor Analysis (Pure and Applied Mathematics #172)
by Eutiquio C. Young<p>Revised and updated throughout, this book presents the fundamental concepts of vector and tensor analysis with their corresponding physical and geometric applications - emphasizing the development of computational skills and basic procedures, and exploring highly complex and technical topics in simplified settings. <p>This text: incorporates transformation of rectangular cartesian coordinate systems and the invariance of the gradient, divergence and the curl into the discussion of tensors; combines the test for independence of path and the path independence sections; offers new examples and figures that demonstrate computational methods, as well as carify concepts; introduces subtitles in each section to highlight the appearance of new topics; provides definitions and theorems in boldface type for easy identification. It also contains numerical exercises of varying levels of difficulty and many problems solved.</p>
Vector Control of AC Drives
by Syed A. NasarAlternating current (AC) induction and synchronous machines are frequently used in variable speed drives with applications ranging from computer peripherals, robotics, and machine tools to railway traction, ship propulsion, and rolling mills. The notable impact of vector control of AC drives on most traditional and new technologies, the multitude of practical configurations proposed, and the absence of books treating this subject as a whole with a unified approach were the driving forces behind the creation of this book. Vector Control of AC Drives examines the remarkable progress achieved worldwide in vector control from its introduction in 1969 to the current technology. The book unifies the treatment of vector control of induction and synchronous motor drives using the concepts of general flux orientation and the feed-forward (indirect) and feedback (direct) voltage and current vector control. The concept of torque vector control is also introduced and applied to all AC motors. AC models for drive applications developed in complex variables (space phasors), both for induction and synchronous motors, are used throughout the book. Numerous practical implementations of vector control are described in considerable detail, followed by representative digital simulations and test results taken from the recent literature.Vector Control of AC Drives will be a welcome addition to the reference collections of electrical and mechanical engineers involved with machine and system design.
Vector Control of Induction Machines
by Bruno Francois Philippe Degobert Benoît Robyns Jean Paul HautierAfter a brief introduction to the main law of physics and fundamental concepts inherent in electromechanical conversion, Vector Control of Induction Machines introduces the standard mathematical models for induction machines - whichever rotor technology is used - as well as several squirrel-cage induction machine vector-control strategies. The use of causal ordering graphs allows systematization of the design stage, as well as standardization of the structure of control devices. Vector Control of Induction Machines suggests a unique approach aimed at reducing parameter sensitivity for vector controls based on a theoretical analysis of this sensitivity. This analysis naturally leads to the introduction of control strategies that are based on the combination of different controls with different robustness properties, through the use of fuzzy logic supervisors. Numerous applications and experiments confirm the validity of this simple solution, which is both reproducible and applicable to other complex systems. Vector Control of Induction Machines is written for researchers and postgraduate students in electrical engineering and motor drive design.