But do you know about the mathematical genius who made sure that Apollo 13 returned safely home?As a child, Katherine Johnson loved to count. She counted the steps on the road, the number of dishes and spoons she washed in the kitchen sink, everything! Boundless, curious, and excited by calculations, young Katherine longed to know as much as she could about math, about the universe.From Katherine's early beginnings as a gifted student to her heroic accomplishments as a prominent mathematician at NASA, this is the story of a groundbreaking American woman who not only calculated the course of moon landings but, in turn, saved lives and made enormous contributions to history.

    No statistical knowledge is required, and your programming skills can range from hobbyist to pro.Along the way, you'll learn about functional and object-oriented programming, running mathematical simulations, and rearranging complex data into simpler, more useful formats. You'll also learn to: Create artful graphs to visualize complex data sets and functions Write more efficient code using parallel R and vectorization Interface R with C/C++ and Python for increased speed or functionality Find new R packages for text analysis, image manipulation, and more Squash annoying bugs with advanced debugging techniques Whether you're designing aircraft, forecasting the weather, or you just need to tame your data, The Art of R Programming is your guide to harnessing the power of statistical computing.

    It's extremely selfish to think we are the only existing intelligent life. Science and religion are on the verge of discovering the truth. Super ancient societies and their archaeological evidence uncovered to this day is a vault of stored information waiting to be unlocked. All we need to do is find the key. Help us uncover the truth by learning about Ancient Earth Mysteries.

    What sort of girl steals boyfriends? Especially when you don’t even have a boyfriend to steal in the first place. Once again Lily, the good-hearted, 12 year old witch steps up to the challenge, when the school’s meanest cheerleaders, Tiffany and Krystal are up to their conniving tricks again and set to destroy the school’s Christmas party. And this time, they’re out to get Lily as well. Lily realises something smells fishier than sardines on a hot road, when Krystal starts hanging round Alex, Lily’s best ‘boy’ friend as he tries to organise a school party. But he’s not the only boy that Krystal has her sights set on, and she and Tiffany, her partner in bullying, will do anything to get what they want, even if it means putting everyone at the party in grave danger. It’s one of Lily’s most dangerous and difficult challenges yet, and she’s not sure if her witchcraft powers can save the day, but she does everything she can to try. Another light-hearted and humorous look at teenage life for girls. 'Boyfriend Stealer' deals with bullying, self-image, panic attacks, boys, staying true to yourself and just being a good friend.

    You’ll find it fun to read too - written in simple, everyday language.And, if you’re like most people, you’ll find that learning “why” the law of attraction works will pour rocket fuel into your belief in it. And attaining such a level of belief will allow you to unleash the law of attraction more powerfully than you’ve done previously. Why Quantum Physicists Create More Abundance removes your barriers of doubt and resistance concerning the law of attraction. It can be a very powerful tool for you, helping you soar past previous frustrations and manifesting a life much more closely aligned with your dreams and desires.

    It can also serve as a one-semester introductory course at the beginning graduate level, as a useful precursor to a more serious study of CFD in advanced books. It is presented in a very readable, informal, enjoyable style.