X The Unknown Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of X The Unknown book. This book definitely worth reading, it is an incredibly well-written.
In a quiet field in Buckinghamshire, a huge crack has appeared in the earth's surface. And people are dying. Incinerated beyond recognition. At the same time, hospitals have noticed an increase in catastrophic deformities in foetuses, and cancer levels soaring. Dr Adam Royston, a scientist working at the nearby military base, thinks he knows what it is; a creature as old as the earth that slumbers for centuries, then wakes to feed on the energy and radiation produced by humans. But if he's right, and they can't find a way to destroy the creature roaming the countryside, then it's not just Buckinghamshire that could be in danger, but the whole world.
Taming the Unknown by Victor J. Katz,Karen Hunger Parshall Pdf
What is algebra? For some, it is an abstract language of x's and y’s. For mathematics majors and professional mathematicians, it is a world of axiomatically defined constructs like groups, rings, and fields. Taming the Unknown considers how these two seemingly different types of algebra evolved and how they relate. Victor Katz and Karen Parshall explore the history of algebra, from its roots in the ancient civilizations of Egypt, Mesopotamia, Greece, China, and India, through its development in the medieval Islamic world and medieval and early modern Europe, to its modern form in the early twentieth century. Defining algebra originally as a collection of techniques for determining unknowns, the authors trace the development of these techniques from geometric beginnings in ancient Egypt and Mesopotamia and classical Greece. They show how similar problems were tackled in Alexandrian Greece, in China, and in India, then look at how medieval Islamic scholars shifted to an algorithmic stage, which was further developed by medieval and early modern European mathematicians. With the introduction of a flexible and operative symbolism in the sixteenth and seventeenth centuries, algebra entered into a dynamic period characterized by the analytic geometry that could evaluate curves represented by equations in two variables, thereby solving problems in the physics of motion. This new symbolism freed mathematicians to study equations of degrees higher than two and three, ultimately leading to the present abstract era. Taming the Unknown follows algebra’s remarkable growth through different epochs around the globe.
Manhattan Prep’s 4th Edition GRE Strategy Guides have been redesigned with the student in mind. With updated content and new practice problems, they are the richest, most content-driven GRE materials on the market. Written by Manhattan Prep's high-caliber GRE instructors, the GRE Word Problems strategy guide analyzes the GRE's complex math word problems and provides structured frameworks for attacking each question type. Master the art of translating challenging word problems into organized data through a complete review of algebraic translations, ratios, statistics, probability, and more. Each chapter provides comprehensive coverage of the subject matter through rules, strategies, and in-depth examples to help you build confidence and content mastery. In addition, the guide contains "Check Your Skills" quizzes as you progress through the material, complete problem sets at the end of every chapter, and mixed drill sets at the end of the book to help you build accuracy and speed. All practice problems include detailed answer explanations written by top-scorers!
'A typical day on the 4 to 12 shift, as I am at present, so that the sheer agony of it may be placed on record for me to look back on, perhaps one day in the far distant future when this period may be seen like a nightmare and be mercifully semi-observed in oblivion so that I shall remember only the glory of my position as the first and only woman on the watch and holding the most responsible position of any woman in the Hut.' October 12th 1942. When Elisa Segrave uncovered a cache of wartime diaries written by her mother, she had no idea that she would be brought face to face with a character utterly different from the troubled woman who had become so reliant on her. Now, on the pages before her, Segrave encountered Anne Hamilton-Grace, a young woman who had grown up in immense privilege and luxury but who leapt at the first opportunity to join the war effort. Through determination she excelled in the world of secret intelligence. Leaving the world of finishing school and hunt balls behind her, Anne’s journey took her to Hut 3 at Bletchley Park, to Bomber Command in Grantham and, finally, to a newly liberated Germany. In The Girl From Station X, Segrave opens the pages of her mother’s diaries to us and recreates her life both before and after the war. At once a vivid recreation of a dramatic era and a powerful portrait of a mother-daughter relationship, this is an original and affecting work about what it means to come to know someone through their writing; about how Anne unwittingly found a way to link her life with her daughter’s decades after they had given up trying to communicate.
Author : Michael V. Klibanov,Jingzhi Li Publisher : Walter de Gruyter GmbH & Co KG Page : 247 pages File Size : 48,9 Mb Release : 2021-09-07 Category : Mathematics ISBN : 9783110745559
Inverse Problems and Carleman Estimates by Michael V. Klibanov,Jingzhi Li Pdf
The Inverse and Ill-Posed Problems Series is a series of monographs publishing postgraduate level information on inverse and ill-posed problems for an international readership of professional scientists and researchers. The series aims to publish works which involve both theory and applications in, e.g., physics, medicine, geophysics, acoustics, electrodynamics, tomography, and ecology.
Prime Obsession taught us not to be afraid to put the math in a math book. Unknown Quantity heeds the lesson well. So grab your graphing calculators, slip out the slide rules, and buckle up! John Derbyshire is introducing us to algebra through the ages-and it promises to be just what his die-hard fans have been waiting for. "Here is the story of algebra." With this deceptively simple introduction, we begin our journey. Flanked by formulae, shadowed by roots and radicals, escorted by an expert who navigates unerringly on our behalf, we are guaranteed safe passage through even the most treacherous mathematical terrain. Our first encounter with algebraic arithmetic takes us back 38 centuries to the time of Abraham and Isaac, Jacob and Joseph, Ur and Haran, Sodom and Gomorrah. Moving deftly from Abel's proof to the higher levels of abstraction developed by Galois, we are eventually introduced to what algebraists have been focusing on during the last century. As we travel through the ages, it becomes apparent that the invention of algebra was more than the start of a specific discipline of mathematics-it was also the birth of a new way of thinking that clarified both basic numeric concepts as well as our perception of the world around us. Algebraists broke new ground when they discarded the simple search for solutions to equations and concentrated instead on abstract groups. This dramatic shift in thinking revolutionized mathematics. Written for those among us who are unencumbered by a fear of formulae, Unknown Quantity delivers on its promise to present a history of algebra. Astonishing in its bold presentation of the math and graced with narrative authority, our journey through the world of algebra is at once intellectually satisfying and pleasantly challenging.
MRTD (Multi Resolution Time Domain) Method in Electromagnetics by Nathan Bushyager,Manos Tentzeris Pdf
This book presents a method that allows the use of multiresolution principles in a time domain electromagnetic modeling technique that is applicable to general structures. The multiresolution time-domain (MRTD) technique, as it is often called, is presented for general basis functions. Additional techniques that are presented here allow the modeling of complex structures using a subcell representation that permits the modeling discrete electromagnetic effects at individual equivalent grid points. This is accomplished by transforming the application of the effects at individual points in the grid into the wavelet domain. In this work, the MRTD technique is derived for a general wavelet basis using a relatively compact vector notation that both makes the technique easier to understand and illustrates the differences between MRTD basis functions. In addition, techniques such as the uniaxial perfectly matched layer (UPML) for arbitrary wavelet resolution and non-uniform gridding are presented. Using these techniques, any structure that can be simulated in Yee-FDTD can be modeled with in MRTD.
Trends in Mathematics and Computational Intelligence by María Eugenia Cornejo,László T. Kóczy,Jesús Medina,Antonio Eduardo De Barros Ruano Pdf
This book presents appealing contributions on computational intelligence and mathematics, connecting both areas and offering solutions to a number of interesting, real-world problems. Such problems often require novel solutions, as complexity exceeds the tractable size. At the same time, the need for good-quality realistic solutions results in models and algorithms with a good balance of resource intensiveness and model quality (accuracy). Many areas of knowledge call for hybrid solutions that combine traditional mathematical techniques and computational intelligence based on subsymbolic knowledge representation. Important research topics are focused on developing the interaction between computational intelligence and mathematics, in order to address various challenges of the current technological age. Written by influential, leading researchers, this book discusses the latest trends in hybridising mathematics and computational intelligence.
Environmental Sampling and Analysis by Maria Csuros Pdf
This manual covers the latest laboratory techniques, state-of-the-art instrumentation, laboratory safety, and quality assurance and quality control requirements. In addition to complete coverage of laboratory techniques, it also provides an introduction to the inorganic nonmetallic constituents in environmental samples, their chemistry, and their control by regulations and standards. Environmental Sampling and Analysis Laboratory Manual is perfect for college and graduate students learning laboratory practices, as well as consultants and regulators who make evaluations and quality control decisions. Anyone performing laboratory procedures in an environmental lab will appreciate this unique and valuable text.
Eleven Seconds Into the Unknown by Curtis Peebles,Ned Allen Pdf
Eleven Seconds into the Unknown: A History of the Hyper-X Program is a sequel to the author's first book on the X-43A/Hyper-X project, Road to Mach 10: Lessons Learned from the X-43A Flight Research Program. The Hyper-X program involved the efforts of numerous governmental and commercial organizations, each with its own culture, experience, and tradition. A central theme of the Hyper-X story is how these disparate groups and organizations became a unified team working toward a common goal. Making the team's task more difficult were the technological, political, and funding challenges during nearly fifty years of scramjet development. Eleven Seconds into the Unknown: A History of the Hyper-X Program addresses these issues in compelling fashion, and will appeal to anyone interested in high-speed flight, aerospace history, the organization and management of technological projects, and the future of spaceflight.
Gray Morris's Calculate with Confidence, Canadian Edition - E-Book by Tania N Killian Pdf
NEW! Next Generation NCLEX-RN® exam-style case studies on the Evolve website provide drug calculation practice for the Next Generation NCLEX Examination. NEW! Increased number of Clinical Reasoning exercises builds students’ critical thinking skills, with a focus on preventing medication errors. NEW! Thoroughly updated content includes the latest Health Canada-approved medications, current drug labels, the latest research, Canadian statistics, commonly used abbreviations, and recommended practices related to medication errors and their prevention. NEW! A-Z medication index references the page numbers where drug labels can be found. NEW! Tips for Clinical Practice from the text are now available on Evolve in printable, easy-reference format.