A riveting inside look at an elite unit within the Pentagon—the Defense Innovation Unit, also known as Unit X—whose mission is to bring Silicon Valley’s cutting-edge technology to America’s military: from the two men who launched the unit. A vast and largely unseen transformation of how war is fought as profound as the invention of gunpowder or advent of the nuclear age is occurring. Flying cars that can land like helicopters, artificial intelligence-powered drones that can fly into buildings and map their interiors, microsatellites that can see through clouds and monitor rogue missile sites—all these and more are becoming part of America’s DIU-fast-tracked arsenal. Until recently, the Pentagon was known for its uncomfortable relationship with Silicon Valley and for slow-moving processes that acted as a brake on innovation. Unit X was specifically designed as a bridge to Valley technologists that would accelerate bringing state of the art software and hardware to the battle space. Given authority to cut through red tape and function almost as a venture capital firm, Shah, Kirchhoff, and others in the Unit who came after were tasked particularly with meeting immediate military needs with technology from Valley startups rather than from so-called “primes”—behemoth companies like Lockheed, Raytheon, and Boeing. Taking us inside AI labs, drone workshops, and battle command centers—and, also, overseas to Ukraine’s frontlines—Shah and Kirchhoff paint a fascinating picture of what it takes to stay dominant in a fast-changing and often precarious geopolitical landscape. In an era when America’s chief rival, China, has ordered that all commercial firms within its borders make their research and technology available for military exploitation, strengthening the relationship between Washington and Silicon Valley was always advisable. Today, it is an urgent necessity.
Mechanics of Textile and Laminated Composites is in three parts. The first part (Chapters 1 and 2) covers the fundamental issues of 3-D theory of elasticity and presents the theory of elasticity of an anisotropic body with comprehensive analysis of its specific cases. The second part (Chapters 3-5) presents the theoretical and experimental characterization of the elastic properties of unidirectional, textile and layered composite materials. The final part (Chapters 6 and 7) addresses the problems of 3-D stress analysis in laminated and textile composite structures. Major emphasis is placed on textile composites, perhaps the most complex and at the same time most promising group of composite materials. One of the most important features of this book is that it provides accurate and efficient 3-D analysis of laminated and textile reinforced structures, using novel methods. It has become more and more evident in recent years that, in many practical design situations, such full-scale 3-D analyses are required. Researchers, designers and engineers working with composite materials and structures will find this book an invaluable addition to their libraries.
This comprehensive guide helps readers understand the theory and techniques needed to analyze and model radio wave propagation in complex environments. All of the essential topics are covered, from the fundamental concepts of radio systems, to complex propagation phenomena. These topics include diffraction, ray tracing, scattering, atmospheric ducting, ionospheric ducting, scintillation, and propagation through both urban and non-urban environments. Emphasis is placed on practical procedures, with detailed discussion of numerical and mathematical methods providing readers with the necessary skills to build their own propagation models and develop their own techniques. MATLAB functions illustrating key modeling ideas are provided online. This is an invaluable resource for anyone wanting to use propagation models to understand the performance of radio systems for navigation, radar, communications, or broadcasting.
This proceedings volume presents the very latest developments in non-astronomical adaptive optics. This international workshop, the sixth in a biennial series, was the largest ever held and boasted significant involvement by industry. Adaptive optics is on the verge of being used in many products; indeed, at this meeting, the use of adaptive optics in DVD players was disclosed for the first time.
Macroscopic Electrodynamics' (ME) is a comprehensive two-semester introductory graduate level textbook on classical electrodynamics for use in physics and engineering programs. The word 'macroscopic' is intended to indicate both the large-scale nature of the theory, as well as the emphasis placed upon applications of the so-called macroscopic Maxwell equations to idealized media. ME emphasizes principles and practical methods of analysis, which are often presented in fresh and original ways. Illustrative examples are carefully chosen to promote the students' physical intuition, and are worked out in detail to give students a thorough grounding in solution techniques. The style is informal yet mathematically sound, and presumes only a basic familiarity with electrodynamics such as that obtained in a one-semester junior-level undergraduate class.At the end of each chapter, many original problems are provided with illustrations or expanded upon specific sections of the text. The problems are at the heart of the text and are meant to encourage students, develop confidence, and emphasize ideas while avoiding both oversimplification and inordinate calculational difficulties.
This book provides a unified description of transport processes involving saturated and unsaturated flow in inorganic building materials and structures. It emphasizes fundamental physics and materials science, mathematical description, and experimental measurement as a basis for engineering design and construction practice. Water Transport in Brick
Do negative campaigns win elections? Do voters abandon candidates accused of scandalous behaviour? Do government apologies affect prospects for re-election? While many people assume the answer to each of these questions is yes, there is limited empirical evidence to support these assumptions. In this book, Jason Roy and Christopher Alcantara use a series of experiments to test these and other commonly held beliefs. Each chapter draws upon contemporary events and literature to frame the issues and strategies. The findings suggest that not all of the assumptions that people have about the best strategies for winning and keeping political power hold up to empirical scrutiny. In fact, some work in ways that many readers may find surprising. Original and innovative in its use of experimental methods, Winning and Keeping Power in Canadian Politics is a persuasive analysis of some of our most prominent and long-standing political myths. It will be a "go to" resource for journalists, strategists, scholars, and general readers alike.
Entrepreneurship, Private and Public is a unique study that explores the regional structure of small manufacturers, the nature of their operations, and their relationship to larger industry and public agencies. It examines the role of entrepreneurship in modern society through a survey of small businesses and the economic development agencies that help them in upstate New York. Previous research on this topic has not addressed the impact of the public agencies that are run by and for entrepreneurs on small manufacturers. The results of this study challenge existing theories on small businesses, finding that they engage in a complex web of economic relationships with larger industry. Rather than being replaced, small manufacturers often fill specialized niches that serve larger industry. In this sense, small businesses are essential to understanding larger economic structures. Those with interests in small business development, rural sociology and agricultural economy will find this volume enlightening.
This textbook sets the standard for university-level instruction of mining engineering principles. With a thoughtful balance of theory and application, it gives students a practical working knowledge of various concepts presented. Its utility extends beyond the classroom as a valuable field reference for practicing engineers.
Based on lectures given at Zhejiang University in Hangzhou, China, and Johns Hopkins University, this book introduces eigenfunctions on Riemannian manifolds. Christopher Sogge gives a proof of the sharp Weyl formula for the distribution of eigenvalues of Laplace-Beltrami operators, as well as an improved version of the Weyl formula, the Duistermaat-Guillemin theorem under natural assumptions on the geodesic flow. Sogge shows that there is quantum ergodicity of eigenfunctions if the geodesic flow is ergodic. Sogge begins with a treatment of the Hadamard parametrix before proving the first main result, the sharp Weyl formula. He avoids the use of Tauberian estimates and instead relies on sup-norm estimates for eigenfunctions. The author also gives a rapid introduction to the stationary phase and the basics of the theory of pseudodifferential operators and microlocal analysis. These are used to prove the Duistermaat-Guillemin theorem. Turning to the related topic of quantum ergodicity, Sogge demonstrates that if the long-term geodesic flow is uniformly distributed, most eigenfunctions exhibit a similar behavior, in the sense that their mass becomes equidistributed as their frequencies go to infinity.
This work is a study of the essential principles that form the foundations for electrical and electronic engineering courses, providing the underpinning knowledge needed by a wide range of technician engineers.
This advanced undergraduate textbook presents a new approach to teaching mathematical methods for scientists and engineers. It provides a practical, pedagogical introduction to utilizing Python in Mathematical and Computational Methods courses. Both analytical and computational examples are integrated from its start. Each chapter concludes with a set of problems designed to help students hone their skills in mathematical techniques, computer programming, and numerical analysis. The book places less emphasis on mathematical proofs, and more emphasis on how to use computers for both symbolic and numerical calculations. It contains 182 extensively documented coding examples, based on topics that students will encounter in their advanced courses in Mechanics, Electronics, Optics, Electromagnetism, Quantum Mechanics etc. An introductory chapter gives students a crash course in Python programming and the most often used libraries (SymPy, NumPy, SciPy, Matplotlib). This is followed by chapters dedicated to differentiation, integration, vectors and multiple integration techniques. The next group of chapters covers complex numbers, matrices, vector analysis and vector spaces. Extensive chapters cover ordinary and partial differential equations, followed by chapters on nonlinear systems and on the analysis of experimental data using linear and nonlinear regression techniques, Fourier transforms, binomial and Gaussian distributions. The book is accompanied by a dedicated GitHub website, which contains all codes from the book in the form of ready to run Jupyter notebooks. A detailed solutions manual is also available for instructors using the textbook in their courses. Key Features: A unique teaching approach which merges mathematical methods and the Python programming skills which physicists and engineering students need in their courses Uses examples and models from physical and engineering systems, to motivate the mathematics being taught Students learn to solve scientific problems in three different ways: traditional pen-and-paper methods, using scientific numerical techniques with NumPy and SciPy, and using Symbolic Python (SymPy).
Packed full of real circuits to build and test, Hands-On Electronics is a unique introduction to analog and digital electronics theory and practice. Ideal both as a college textbook and for self-study, the friendly style, clear illustrations and construction details included in the book encourage rapid and effective learning of analog and digital circuit design theory. All the major topics for a typical one semester course are covered including RC circuits, diodes, transistors, op-amps, oscillators, TTL logic, counters, D/A converters and more. There are also chapters explaining how to use the equipment needed for the examples (oscilloscope, multimeter and breadboard) together with pin-out diagrams and manufacturers' specifications for all the key components referred to in the book.
This textbook gives a lively introduction to the search for extraterrestrial life. It is a guidebook to understanding the possibility of life elsewhere, pointing out landmarks and providing background information to facilitate further exploration of those areas of most interest to the reader. We are a planet of winners – winners of a cosmic lottery that has been in play since the universe began approximately 13.7 billion years ago. Our winnings include sentience and an underlying unease that has driven us to contemplate our place in the universe and the possibility of finding kindred spirits in the cosmos spreading out before us. To understand our origins and the possibility of life beyond Earth, we must look back and retrace the steps that have brought us to this point in space and time. In doing so, we will find the investigation of life to be a unifying theme in nature, requiring us to touch on all branches of the tree of knowledge. Using the Drake Equation as a theme, we begin with an overview of the topic and then go into the story of how we have acquired, or plan to acquire, the knowledge to solve it. As we make our journey, we will encounter some very interesting people – some you will likely know, while others may be new to you. Keep an open mind and allow this text to be your guide. Written in an engaging style, this textbook provides a foundational understanding of the rapidly advancing fields associated with the search for life in the universe. Each chapter includes illustrative figures and review questions for self-study. It will appeal to professionals, researchers, instructors, and undergraduate students, as well as anyone with an interest in astrophysics or astrobiology.
The Oxford Handbook of Mesoamerican Archaeology provides a current and comprehensive guide to the recent and on-going archaeology of Mesoamerica. Though the emphasis is on prehispanic societies, this Handbook also includes coverage of important new work by archaeologists on the Colonial and Republican periods. Unique among recent works, the text brings together in a single volume article-length regional syntheses and topical overviews written by active scholars in the field of Mesoamerican archaeology. The first section of the Handbook provides an overview of recent history and trends of Mesoamerica and articles on national archaeology programs and practice in Central America and Mexico written by archaeologists from these countries. These are followed by regional syntheses organized by time period, beginning with early hunter-gatherer societies and the first farmers of Mesoamerica and concluding with a discussion of the Spanish Conquest and frontiers and peripheries of Mesoamerica. Topical and comparative articles comprise the remainder of Handbook. They cover important dimensions of prehispanic societies--from ecology, economy, and environment to social and political relations--and discuss significant methodological contributions, such as geo-chemical source studies, as well as new theories and diverse theoretical perspectives. The Handbook concludes with a section on the archaeology of the Spanish conquest and the Colonial and Republican periods to connect the prehispanic, proto-historic, and historic periods. This volume will be a must-read for students and professional archaeologists, as well as other scholars including historians, art historians, geographers, and ethnographers with an interest in Mesoamerica.
Explosive pulsed power generators are devices that either convert the chemical energy stored in explosives into electrical energy or use the shock waves generated by explosives to release energy stored in ferroelectric and ferromagnetic materials. The objective of this book is to acquaint the reader with the principles of operation of explosive generators and to provide details on how to design, build, and test three types of generators: flux compression, ferroelectric and ferromagnetic generators, which are the most developed and the most near term for practical applications.Containing a considerable amount of new experimental data that has been collected by the authors, this is the first book that treats all three types of explosive pulsed power generators. In addition, there is a brief introduction to a fourth type ix explosive generator called a moving magnet generator. As practical applications for these generators evolve, students, scientists, and engineers will have access to the results of a considerable body of experience gained by almost 10 years of intense research and development by the authors./a
How to Master the BMAT will help you to maximize your UK BMAT test score in the shortest time possible with the least possible effort. With over 400 practice questions including six mock tests, it focuses on core knowledge in six key areas: -aptitude and skills -maths -physics -chemistry -biology -writing tasks At the end of each section, a set of review questions enable you to identify and improve your weak areas before you sit the test, then once you are ready you can complete the practice papers that reflect the BMAT test. Candidates are supported throughout the book, and, where possible, every question comes complete with its revision topics indicated in brackets, useful hints and expanded answers.
Electricity is all around us: cars, telephones, computers, lights -- the modern world runs entirely on electrons. But what are electrons? How do they behave? How do we control them? This book will show you how to build a battery, detect static electricity and construct a basic current meter, all using common items from your kitchen. Along the way you'll learn about the meaning of "voltage" and "current", what makes an LED work and the difference between AC and DC. The last chapter uses transistors -- the basic building blocks of every computer -- for lots of interesting experiments. With plenty of colorful illustrations, historical stories and an easy, accessible style, "A Kitchen Course in Electricity and Magnetism" will be a great start for budding and amateur scientists who want to learn more about how the world works.
Unrivalled in its coverage and unique in its hands-on approach, this guide to the design and construction of scientific apparatus is essential reading for every scientist and student of engineering, and physical, chemical, and biological sciences. Covering the physical principles governing the operation of the mechanical, optical and electronic parts of an instrument, new sections on detectors, low-temperature measurements, high-pressure apparatus, and updated engineering specifications, as well as 400 figures and tables, have been added to this edition. Data on the properties of materials and components used by manufacturers are included. Mechanical, optical, and electronic construction techniques carried out in the lab, as well as those let out to specialized shops, are also described. Step-by-step instruction supported by many detailed figures, is given for laboratory skills such as soldering electrical components, glassblowing, brazing, and polishing.
This book provides comprehensive coverage of the basic theoretical work required by Marine Engineering Officers and Electrotechnical Officers (ETOs), putting into place key fundamental building blocks and topics in electrotechnology before progressing to more complex topics and electromagnetic systems. Volume 6 covers essential basic electrotechnology principles for the 21st century, including the fundamentals of electron theory, AC and DC current, circuits, electromagnetism and electrochemistry, providing a firm foundation for complementary Volume 7 in the Marine Engineering Series to discuss emergent technology such as image intensifers, the transistor, increased maritime use of LEDs, and references to modern ship systems such as GPS, ECDIS, Radar and AIS. This new edition has been thoroughly updated in line with guidelines, best practice and the many technological developments that have taken place over the past 5 years since the previous edition published, as well as improvements and updates to the technical diagrams.
Computational aeroacoustics (CAA) is a relatively new research area. CAA algorithms have developed rapidly and the methods have been applied in many areas of aeroacoustics. The objective of CAA is not simply to develop computational methods but also to use these methods to solve practical aeroacoustics problems and to perform numerical simulation of aeroacoustic phenomena. By analysing the simulation data, an investigator can determine noise generation mechanisms and sound propagation processes. This is both a textbook for graduate students and a reference for researchers in CAA and as such is self-contained. No prior knowledge of numerical methods for solving partial differential equations (PDEs) is needed, however, a general understanding of partial differential equations and basic numerical analysis is assumed. Exercises are included and are designed to be an integral part of the chapter content. In addition, sample computer programs are included to illustrate the implementation of the numerical algorithms.
Handbook of Energy, Volume II: Chronologies, Top Ten Lists, and Word Clouds draws together a comprehensive account of the energy field from the prestigious and award-winning authors of the Encyclopedia of Energy (2004), The Dictionary of Energy, Expanded Edition (2009), and the Handbook of Energy, Volume I (2013).Handbook of Energy, Volume II takes the wealth of information about historical aspects of energy spread across many books, journals, websites, disciplines, ideologies, and user communities and synthesizes the information in one central repository. This book meets the needs of a diverse readership working in energy, and serves as a vital method of communication among communities including colleges and universities, nongovernmental organizations, government agencies, consulting firms and research institutes of energy, environmental, and public policy issues. Interdisciplinary coverage appropriate for scientists in environmental sciences, social and natural sciences, and engineering Top Ten lists, written by prominent subject experts, provide personal reflections on key issues Chronologies covering 40 different subject areas provide all the significant events in a given field from the geologic past to the present day
Elements of 3D Seismology, third edition is a thorough introduction to the acquisition, processing, and interpretation of 3D seismic data. This third edition is a major update of the second edition. Sections dealing with interpretation have been greatly revised in accordance with improved understanding and availability of data and software. Practice exercises have been added, as well as a 3D seismic survey predesign exercise. Discussions include: conceptual and historical foundations of modern reflection seismology; an overview of seismic wave phenomena in acoustic, elastic, and porous media; acquisition principles for land and marine seismic surveys; methods used to create 2D and 3D seismic images from field data; concepts of dip moveout, prestack migration, and depth migration; concepts and limitations of 3D seismic interpretation for structure, stratigraphy, and rock property estimation; and the interpretation role of attributes, impedance estimation, and AVO. This book is intended as a general text on reflection seismology, including wave propagation, data acquisition, processing, and interpretation and will be of interest to entry-level geophysicists, experts in related fields (geology, petroleum engineering), and experienced geophysicists in one subfield wishing to learn about another (e.g., interpreters wanting to learn about seismic waves or data acquisition).
The mathematical theory of networks and systems has a long, and rich history, with antecedents in circuit synthesis and the analysis, design and synthesis of actuators, sensors and active elements in both electrical and mechanical systems. Fundamental paradigms such as the state-space real ization of an input/output system, or the use of feedback to prescribe the behavior of a closed-loop system have proved to be as resilient to change as were the practitioners who used them. This volume celebrates the resiliency to change of the fundamental con cepts underlying the mathematical theory of networks and systems. The articles presented here are among those presented as plenary addresses, invited addresses and minisymposia presented at the 12th International Symposium on the Mathematical Theory of Networks and Systems, held in St. Louis, Missouri from June 24 - 28, 1996. Incorporating models and methods drawn from biology, computing, materials science and math ematics, these articles have been written by leading researchers who are on the vanguard of the development of systems, control and estimation for the next century, as evidenced by the application of new methodologies in distributed parameter systems, linear nonlinear systems and stochastic sys tems for solving problems in areas such as aircraft design, circuit simulation, imaging, speech synthesis and visionics.
Demonstrates how spectral decomposition and time-frequency methods have led to improved understanding and use of nonlinear harmonics, near-surface guided waves, layer-induced anisotropy, velocity dispersion and attenuation, interference, and Biot reflection. The discussion includes examples, figures, and literature references for further study.
Preface -- Book 1 1865-March 1884 -- Book 2 March 1884-March 1895 -- Book 3 March 1895-April 1899 -- Book 4 April 1899-1901 -- Book 5 1902-January 1907 -- Book 6 January 1907-1912 -- Appendix 1 Works conducted by Hans Richter -- Appendix 2 Cities and towns where Richter conducted -- Select Bibliography -- Index
An overview of engineering systems that describes the new challenges posed for twenty-first-century engineers by today's highly complex sociotechnical systems. Engineering, for much of the twentieth century, was mainly about artifacts and inventions. Now, it's increasingly about complex systems. As the airplane taxis to the gate, you access the Internet and check email with your PDA, linking the communication and transportation systems. At home, you recharge your plug-in hybrid vehicle, linking transportation to the electricity grid. Today's large-scale, highly complex sociotechnical systems converge, interact, and depend on each other in ways engineers of old could barely have imagined. As scale, scope, and complexity increase, engineers consider technical and social issues together in a highly integrated way as they design flexible, adaptable, robust systems that can be easily modified and reconfigured to satisfy changing requirements and new technological opportunities. Engineering Systems offers a comprehensive examination of such systems and the associated emerging field of study. Through scholarly discussion, concrete examples, and history, the authors consider the engineer's changing role, new ways to model and analyze these systems, the impacts on engineering education, and the future challenges of meeting human needs through the technologically enabled systems of today and tomorrow.
This book explores how our conception of dementia has changed since its initial discovery, taking in advancements in knowledge that translate into better ways to manage the condition. Providing detailed reports of the latest research, the book explores the myriad forms of dementia. Written in accessible language, it looks at current methods of assessing and diagnosing the condition before turning to contemporary approaches to treatment. Chapters dedicated to often overlooked issues include raising awareness about how dementia affects the lives of those with an intellectual developmental disorder, the fundamental need to consider cultural differences, and the need to fully acknowledge and support informal carers. The final section of the text examines how COVID-19 has spotlighted serious gaps in healthcare for those living with dementia. Fortified with straightforward explanations and references to clinical material throughout, the book is essential reading not only for clinical psychologists in training and those in practice seeking an overview of the field and latest developments, but for a broader audience as well.
A riveting inside look at an elite unit within the Pentagon—the Defense Innovation Unit, also known as Unit X—whose mission is to bring Silicon Valley’s cutting-edge technology to America’s military: from the two men who launched the unit. A vast and largely unseen transformation of how war is fought as profound as the invention of gunpowder or advent of the nuclear age is occurring. Flying cars that can land like helicopters, artificial intelligence-powered drones that can fly into buildings and map their interiors, microsatellites that can see through clouds and monitor rogue missile sites—all these and more are becoming part of America’s DIU-fast-tracked arsenal. Until recently, the Pentagon was known for its uncomfortable relationship with Silicon Valley and for slow-moving processes that acted as a brake on innovation. Unit X was specifically designed as a bridge to Valley technologists that would accelerate bringing state of the art software and hardware to the battle space. Given authority to cut through red tape and function almost as a venture capital firm, Shah, Kirchhoff, and others in the Unit who came after were tasked particularly with meeting immediate military needs with technology from Valley startups rather than from so-called “primes”—behemoth companies like Lockheed, Raytheon, and Boeing. Taking us inside AI labs, drone workshops, and battle command centers—and, also, overseas to Ukraine’s frontlines—Shah and Kirchhoff paint a fascinating picture of what it takes to stay dominant in a fast-changing and often precarious geopolitical landscape. In an era when America’s chief rival, China, has ordered that all commercial firms within its borders make their research and technology available for military exploitation, strengthening the relationship between Washington and Silicon Valley was always advisable. Today, it is an urgent necessity.
A Dictonary of Science and Technology. Color Illustration Section. Symbols and Units. Fundamental Physical Constants. Measurement Conversion. Periodic Table of the Elements. Atomic Weights. Particles. The Solar System. Geologial Timetable. Five-Kingdom Classification of Organisms. Chronology of Modern Science. Photo Credits.
Dachau and the SS studies the concentration camp guards at Dachau, the first SS concentration camp and a national 'school' of violence for its concentration camp personnel. Set up in the first months of Adolf Hitler's rule, Dachau was a bastion of the Nazi 'revolution' and a key springboard for the ascent of Heinrich Himmler and the SS to control of the Third Reich's terror and policing apparatus. Throughout the pre-war era of Nazi Germany, Dachau functioned as an academy of violence where concentration camp personnel were schooled in steely resolution and the techniques of terror. An international symbol of Nazi depredation, Dachau was the cradle of a new and terrible spirit of destruction. Combining extensive new research into the pre-war history of Dachau with theoretical insights from studies of perpetrator violence, this book offers the first systematic study of the 'Dachau School'. It explores the backgrounds and socialization of thousands of often very young SS men in the camp and critiques the assumption that violence was an outcome of personal or ideological pathologies. Christopher Dillon analyses recruitment to the Dachau SS and evaluates the contribution of ideology, training, social psychology and masculine ideals to the conduct and subsequent careers of concentration camp guards. Graduates of the Dachau School would go on to play a central role in the wartime criminality of the Third Reich, particularly at Auschwitz. Dachau and the SS makes an original contribution to scholarship on the pre-history of the Holocaust and the institutional organisation of violence.
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