Inventive and ambitious minds were hard at work. Soon that spark was fanned and given life, and a fiery war was under way to be the first to light—and run—the world with electricity. Thomas Alva Edison, the inventor of direct current (DC), engaged in a brutal battle with Nikola Tesla and George Westinghouse, the inventors of alternating current (AC). There would be no ties in this bout—only a winner and a loser. The prize: a nationwide monopoly in electric current. Brimming with action, suspense, and rich historical and biographical information about these inventors, here is the rousing account of one of the world's defining scientific competitions.

    In this young reader adaptation of his acclaimed memoir, Hands of My Father, Uhlberg recalls the daily difficulties and hidden joys of growing up as the intermediary between his parents’ silent world and the world of the hearing.

    Got a question? Well now you have an answer! 1,111 of them, in fact. Want to know why your snot is yellow? Flip to the human body chapter. What's on the inside of a turtle shell? The animal section's got you covered. What's in the deepest part of the ocean? Why doesn't Earth just float off into space? Check, check, and check. With hundreds of topics ranging from silly to serious, we've got the expert information you need in a fun and entertaining format that will keep kids digging for answers. Answers include all kinds of fascinating extra info like top ten lists, weird-but-true facts, explorer profiles, and cool activities. Now, go stump your parents!

    This proven and accessible text speaks to beginning engineering and math students through a wealth of pedagogical aids, including an abundance of examples, explanations, "Remarks" boxes, definitions, and group projects. Using a straightforward, readable, and helpful style, this book provides a thorough treatment of boundary-value problems and partial differential equations.

    But if code isn't clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of poorly written code. But it doesn't have to be that way. Noted software expert Robert C. Martin presents a revolutionary paradigm with Clean Code: A Handbook of Agile Software Craftsmanship . Martin has teamed up with his colleagues from Object Mentor to distill their best agile practice of cleaning code on the fly into a book that will instill within you the values of a software craftsman and make you a better programmer but only if you work at it. What kind of work will you be doing? You'll be reading code - lots of code. And you will be challenged to think about what's right about that code, and what's wrong with it. More importantly, you will be challenged to reassess your professional values and your commitment to your craft. Clean Code is divided into three parts. The first describes the principles, patterns, and practices of writing clean code. The second part consists of several case studies of increasing complexity. Each case study is an exercise in cleaning up code - of transforming a code base that has some problems into one that is sound and efficient. The third part is the payoff: a single chapter containing a list of heuristics and "smells" gathered while creating the case studies. The result is a knowledge base that describes the way we think when we write, read, and clean code. Readers will come away from this book understanding ‣ How to tell the difference between good and bad code‣ How to write good code and how to transform bad code into good code‣ How to create good names, good functions, good objects, and good classes‣ How to format code for maximum readability ‣ How to implement complete error handling without obscuring code logic ‣ How to unit test and practice test-driven development This book is a must for any developer, software engineer, project manager, team lead, or systems analyst with an interest in producing better code.

    This is not the same as “doing math.” The latter usually involves the application of formulas, procedures, and symbolic manipulations; mathematical thinking is a powerful way of thinking about things in the world -- logically, analytically, quantitatively, and with precision. It is not a natural way of thinking, but it can be learned. Mathematicians, scientists, and engineers need to “do math,” and it takes many years of college-level education to learn all that is required. Mathematical thinking is valuable to everyone, and can be mastered in about six weeks by anyone who has completed high school mathematics. Mathematical thinking does not have to be about mathematics at all, but parts of mathematics provide the ideal target domain to learn how to think that way, and that is the approach taken by this short but valuable book. The book is written primarily for first and second year students of science, technology, engineering, and mathematics (STEM) at colleges and universities, and for high school students intending to study a STEM subject at university. Many students encounter difficulty going from high school math to college-level mathematics. Even if they did well at math in school, most are knocked off course for a while by the shift in emphasis, from the K-12 focus on mastering procedures to the “mathematical thinking” characteristic of much university mathematics. Though the majority survive the transition, many do not. To help them make the shift, colleges and universities often have a “transition course.” This book could serve as a textbook or a supplementary source for such a course. Because of the widespread applicability of mathematical thinking, however, the book has been kept short and written in an engaging style, to make it accessible to anyone who seeks to extend and improve their analytic thinking skills. Going beyond a basic grasp of analytic thinking that everyone can benefit from, the STEM student who truly masters mathematical thinking will find that college-level mathematics goes from being confusing, frustrating, and at times seemingly impossible, to making sense and being hard but doable. Dr. Keith Devlin is a professional mathematician at Stanford University and the author of 31 previous books and over 80 research papers. His books have earned him many awards, including the Pythagoras Prize, the Carl Sagan Award, and the Joint Policy Board for Mathematics Communications Award. He is known to millions of NPR listeners as “the Math Guy” on Weekend Edition with Scott Simon. He writes a popular monthly blog “Devlin’s Angle” for the Mathematical Association of America, another blog under the name “profkeithdevlin”, and also blogs on various topics for the Huffington Post.

    Polya, How to Solve It will show anyone in any field how to think straight. In lucid and appealing prose, Polya reveals how the mathematical method of demonstrating a proof or finding an unknown can be of help in attacking any problem that can be reasoned out--from building a bridge to winning a game of anagrams. Generations of readers have relished Polya's deft--indeed, brilliant--instructions on stripping away irrelevancies and going straight to the heart of the problem.

    Arun Singh has witnessed life and death from a vantage point nearly unmatched in medical history, while performing over 15,000 open heart surgeries. Revered by colleagues and patients, under the hot lights of the O.R. this award-winning surgeon has spent thousands of hours performing life-saving operations, while witnessing the miraculous, the joyous, and the devastating. He has held the life-giving heart in his hand and has been praised for his tireless devotion to preserving the lives this organ sustains.Dr. Singh's decorated career is an odyssey of remarkable determination. To illuminate the power of perseverance, Dr. Singh recounts how the same two hands that have so expertly worked to extend life were once crushed and his future nearly shattered. In YOUR HEART, MY HANDS he recalls the fortitude that saw him through a complicated boyhood in India, struggles with dyslexia, and finding his way as an immigrant, to become one of America's most highly-regarded and preeminent surgeons. Reflecting on over 40 years of practice, Dr. Singh shares intimate O.R. secrets, riveting patient accounts, and the life lessons he learned treating his most memorable patients. This book will inspire, enlighten, and captivate readers.

    He was with the President during more crucial moments than anyone else -- and he photographed them all, capturing scenes both classified and candid.Throughout his historic presidency, Obama engaged with young people as often as he could, encouraging them to be their best and do their best and to always "dream big dreams." In this timeless and timely keepsake volume that features over seventy-five full-color photographs, Souza shows the qualities of President Obama that make him both a great leader and an extraordinary man. With behind-the-scenes anecdotes of some iconic photos alongside photos with his family, colleagues, and other world leaders, Souza tells the story of a president who made history and still made time to engage with even the youngest citizens of the country he served.By the author of Obama: An Intimate Portrait, the definitive visual biography of Barack Obama's presidency, Dream Big Dreams was created especially for young readers and not only provides a beautiful portrait of a president but shows the true spirit of the man.

    Who knew that there were so many sweet things to learn about chocolate or that a dozen delicious details about peanut butter would show up on a page with a few splotches of jelly to whet our appetites? Keep turning and a terrifyingly toothy shark tells you all about himself, while other spreads lay out tons of tips on toys and games, mysteries of history, robots and reptiles, sports and spies, wacky words, and so much more! A visual feast of colorful photographs surrounded by swirling, tipping, expanding, and climbing bits of information in a high-energy design, this book will satisfy both the casual browser and the truly fact obsessed.

    Aiming to tell the dark secrets of computer arithmetic, this title is suitable for library developers, compiler writers, and lovers of elegant hacks.

    Can Ryan and Cleo unravel the mystery and solve the phoenix code before it's too late?

    It is a one-ton robot with two brains, seventeen cameras, six wheels, nuclear power, and a laser beam on its head. No one human understands how all of its systems and instruments work. This essential reference to the Curiosity mission explains the engineering behind every system on the rover, from its rocket-powered jetpack to its radioisotope thermoelectric generator to its fiendishly complex sample handling system. Its lavishly illustrated text explains how all the instruments work -- its cameras, spectrometers, sample-cooking oven, and weather station -- and describes the instruments' abilities and limitations. It tells you how the systems have functioned on Mars, and how scientists and engineers have worked around problems developed on a faraway planet: holey wheels and broken focus lasers. And it explains the grueling mission operations schedule that keeps the rover working day in and day out.

    A dark plan, put into place centuries ago, has come to fruition. Consider Battle Hymn your wake-up call...Painstakingly researched through hundreds of sources and interviews, Battle Hymn rips the cover off the invisible government that controls our leaders and soon, our very lives. Composed of just a few hundred powerful but unelected people, this elite cadre seeks to create a one-world government to complete its already advanced globalist plans to end the sovereignity of all nations--including the United States. Its ultimate goal is complete control through a New-World Order where a socialist dictatorship ensures that every citizen is tagged, mollified and productive.

    Learn You a Haskell for Great Good! introduces programmers familiar with imperative languages (such as C++, Java, or Python) to the unique aspects of functional programming. Packed with jokes, pop culture references, and the author's own hilarious artwork, Learn You a Haskell for Great Good! eases the learning curve of this complex language, and is a perfect starting point for any programmer looking to expand his or her horizons. The well-known web tutorial on which this book is based is widely regarded as the best way for beginners to learn Haskell, and receives over 30,000 unique visitors monthly.