During the summer of his senior year at college, while earning a B.A. in Economics and Political Science, David P. Spears spent eighty hours undercover as a panhandler. Systematically recording every transaction at the exit ramp, Spears captured a rarely seen picture of how modern urban charity works.This book is the record of his adventures, part economic research, part investigative journalism. Both the numbers and the stories behind the numbers provide answers to the questions we’ve all been wondering: Who gives more to panhandlers—men or women? What percentage of drivers roll down their windows to donate? And most important of all, how much can a panhandler earn per hour?Get out your bi-weekly pay stub—by the end of this book you’ll know if you make more or less than the guy with the cardboard sign.

    Topics are broken down into three major conceptual pieces: Virtualization, Concurrency, and Persistence. Includes all major components of modern systems including scheduling, virtual memory management, disk subsystems and I/O, file systems, and even a short introduction to distributed systems.

    Making mistakes has always been a part of growing up, but how do parents help their kids navigate childhood and adolescence at a time when social media has the potential to magnify the consequences of those mistakes? Rather than spend all their time worrying about the worst-case scenario, readers get a bigger-picture understanding of their kids' digital landscape. Drawing on research and interviews with educators, psychologists, and kids themselves, Raising a Screen-Smart Kid offers practical advice on how parents can help their kids avoid the pitfalls and reap the benefits of the digital age by:- using social media to enhance connection with friends and family, instead of following strangers and celebrities, which is a predictor of loneliness and depression - finding online support and community for conditions such as depression and eating disorders, while avoiding potential triggers such as #Thinspiration Pinterest boards - learning and developing life skills through technology--for example, by problem-solving in online games--while avoiding inappropriate contentWritten by a public health expert and the creator of the popular blog Rants from Mommyland, this book shows parents how to help their kids navigate friendships, bullying, dating, self-esteem, and more online.

    You'll learn pragmatic ways of approaching the development process and your personal coding techniques. You'll learn about your own attitudes, issues with working on a team, and how to best manage your learning, all in an iterative, incremental, agile style. You'll see how to apply each practice, and what benefits you can expect. Bottom line: This book will make you a better developer.

    Every piece of the web application stack, from HTTP requests to browser-side scripts, comes with important yet subtle security consequences. To keep users safe, it is essential for developers to confidently navigate this landscape.In The Tangled Web, Michal Zalewski, one of the world's top browser security experts, offers a compelling narrative that explains exactly how browsers work and why they're fundamentally insecure. Rather than dispense simplistic advice on vulnerabilities, Zalewski examines the entire browser security model, revealing weak points and providing crucial information for shoring up web application security. You'll learn how to:Perform common but surprisingly complex tasks such as URL parsing and HTML sanitization Use modern security features like Strict Transport Security, Content Security Policy, and Cross-Origin Resource Sharing Leverage many variants of the same-origin policy to safely compartmentalize complex web applications and protect user credentials in case of XSS bugs Build mashups and embed gadgets without getting stung by the tricky frame navigation policy Embed or host user-supplied content without running into the trap of content sniffing For quick reference, "Security Engineering Cheat Sheets" at the end of each chapter offer ready solutions to problems you're most likely to encounter. With coverage extending as far as planned HTML5 features, The Tangled Web will help you create secure web applications that stand the test of time.

    This guide also teaches you safe and practical ways to scale applications through replication, load balancing, high availability, and failover. Updated to reflect recent advances in MySQL and InnoDB performance, features, and tools, this third edition not only offers specific examples of how MySQL works, it also teaches you why this system works as it does, with illustrative stories and case studies that demonstrate MySQL’s principles in action. With this book, you’ll learn how to think in MySQL. Learn the effects of new features in MySQL 5.5, including stored procedures, partitioned databases, triggers, and views Implement improvements in replication, high availability, and clustering Achieve high performance when running MySQL in the cloud Optimize advanced querying features, such as full-text searches Take advantage of modern multi-core CPUs and solid-state disks Explore backup and recovery strategies—including new tools for hot online backups

    With the king and queen away, she has to manage the Kingdom of Kod's humongous fruit-selling empire. Overseas departments, scads of inventory, conflicting prices, and so many customers! It's all such a confusing mess. But a mysterious book and a helpful fairy promise to solve her organizational problems-with the practical magic of databases.In The Manga Guide to Databases, Tico the fairy teaches the Princess how to simplify her data management. We follow along as they design a relational database, understand the entity-relationship model, perform basic database operations, and delve into more advanced topics. Once the Princess is familiar with transactions and basic SQL statements, she can keep her data timely and accurate for the entire kingdom. Finally, Tico explains ways to make the database more efficient and secure, and they discuss methods for concurrency and replication.Examples and exercises (with answer keys) help you learn, and an appendix of frequently used SQL statements gives the tools you need to create and maintain full-featured databases.(Of course, it wouldn't be a royal kingdom without some drama, so read on to find out who gets the girl-the arrogant prince or the humble servant.)This EduManga book is a translation of a bestselling series in Japan, co-published with Ohmsha, Ltd., of Tokyo, Japan.

    More than any other language, Python was created with the philosophy of simplicity and parsimony. Now 25 years old, Python has become the primary or secondary language (after SQL) for many business users. With popularity comes diversity--and possibly dilution.This guide, collaboratively written by over a hundred members of the Python community, describes best practices currently used by package and application developers. Unlike other books for this audience, The Hitchhiker's Guide is light on reusable code and heavier on design philosophy, directing the reader to excellent sources that already exist.

    It aims to help you to take the plunge to realize your potential, so that you do not have to remain stuck in a social and lifestyle rut as if there is no alternative.

    Jason Briggs, author of the popular online tutorial "Snake Wrangling for Kids," begins with the basics of how to install Python and write simple commands. In bite-sized chapters, he instructs readers on the essentials of Python, including how to use Python's extensive standard library, the difference between strings and lists, and using for-loops and while-loops. By the end of the book, readers have built a game and created drawings with Python's graphics library, Turtle. Each chapter closes with fun and relevant exercises that challenge the reader to put their newly acquired knowledge to the test.

    This book helps you develop websites by integrating and implementing the PHP scripting language and the MySQL database system. It contains real-world examples and working sample projects that give you a foundation to start building your own websites.

    It is for everyone who cares about education in an uncertain world and explains how teachers, parents and grandparents can cultivate confidence, curiosity, collaboration, communication, creativity, commitment and craftsmanship in children, at the same time as helping them to do well in public examinations. Educating Ruby shows, unequivocally, that schools can get the right results in the right way, so that the Rubys of tomorrow will emerge from their time at school able to talk with honest pleasure and reflective optimism about their schooling. Featuring the views of schoolchildren, parents, educators and employers and drawing on Guy Claxton and Bill Lucas’ years of experience in education, including their work with Building Learning Power and the Expansive Education Network, this powerful new book is sure to provoke thinking and debate. Just as Willy Russell’s Educating Rita helped us rethink university, the authors of Educating Ruby invite fresh scrutiny of our schools.

    Willingham on educational neuroscience? Written for busy teachers, trainers, managers and students, this dip-in dip-out guide makes theories of learning accessible and practical. It explores over 100 classic and contemporary learning theorists in an easy-to-use, bite-sized format with clear relevant illustrations on how each theory will benefit your teaching and learning.Each model or theory is explained in less than 350 words, many with accompanying diagrams, and the 'how to use it' sections, in less than 500 words. Every entry includes:Do it steps in order to apply the theory or modelReflection points & challenges to develop your understanding of how to apply itAnalogies & metaphors from which understanding and meaning can be drawnTips for the classroomFurther reading if you want to explore a theory in greater depth. More titles by Bob Bates: Educational Leadership Simplified A Quick Guide to Special Needs and Disabilities