This practical book shows you how to bundle reusable R functions, sample data, and documentation together by applying author Hadley Wickham’s package development philosophy. In the process, you’ll work with devtools, roxygen, and testthat, a set of R packages that automate common development tasks. Devtools encapsulates best practices that Hadley has learned from years of working with this programming language. Ideal for developers, data scientists, and programmers with various backgrounds, this book starts you with the basics and shows you how to improve your package writing over time. You’ll learn to focus on what you want your package to do, rather than think about package structure. Learn about the most useful components of an R package, including vignettes and unit tests Automate anything you can, taking advantage of the years of development experience embodied in devtools Get tips on good style, such as organizing functions into files Streamline your development process with devtools Learn the best way to submit your package to the Comprehensive R Archive Network (CRAN) Learn from a well-respected member of the R community who created 30 R packages, including ggplot2, dplyr, and tidyr

    * Easy to follow How To Crochet illustrations * Fun and simple projects to make * Learn a variety of crochet stitches and skills * Perfect for absolute beginners * Projects include hats, scarves, mittens, baby blankets, scented hearts, granny squares and more! This is the ONLY beginner's book you'll need to start to crochet today!!

    Real-life cases and situations demonstrate the significance of ethics in the world of criminal justice today for those studying or contemplating a career in criminal justice.

    Based on the abstract, general style of mathematical exposition favored by research mathematicians, its goal was to teach students not just to manipulate numbers and formulas, but to grasp the underlying mathematical concepts. The result, at least at first, was a great deal of confusion among teachers, students, and parents. Since then, the negative aspects of "new math" have been eliminated and its positive elements assimilated into classroom instruction.In this charming volume, a noted English mathematician uses humor and anecdote to illuminate the concepts underlying "new math": groups, sets, subsets, topology, Boolean algebra, and more. According to Professor Stewart, an understanding of these concepts offers the best route to grasping the true nature of mathematics, in particular the power, beauty, and utility of pure mathematics. No advanced mathematical background is needed (a smattering of algebra, geometry, and trigonometry is helpful) to follow the author's lucid and thought-provoking discussions of such topics as functions, symmetry, axiomatics, counting, topology, hyperspace, linear algebra, real analysis, probability, computers, applications of modern mathematics, and much more.By the time readers have finished this book, they'll have a much clearer grasp of how modern mathematicians look at figures, functions, and formulas and how a firm grasp of the ideas underlying "new math" leads toward a genuine comprehension of the nature of mathematics itself.

    In addition to step-by-step coverage of documentation, the book includes an overview of the research-writing process entitled "Writing Scholarly Papers" and three useful appendices. Thorough and practical, this convenient reference guide is also less expensive and easier for undergraduates to use than the APA Manual. The Second Edition features expanded coverage of electronic sources to keep students up-to-date on using and evaluating Internet references in their research. In addition, this new edition provides more guidance on avoiding plagiarism. The two sample APA-style papers--one argumentative and one experimental--are carefully annotated to give students extra support as they master the elements of manuscript preparation and documentation principles.

    Robert Kaplan and Dennis Saccuzzo provide students with a current analysis of the most widely used psychological tests in schools, professional training programs, business, industry, the military, and clinical settings. The authors offer a clear picture of how psychological tests are constructed, how they are used, and how an understanding of them can make a difference in their careers and everyday lives. Comprehensive and accurate, yet interesting and personally relevant, this book gets and keeps students' attention through the use of informal discussions and real-life examples.

    With it you can prime yourself with the key concepts of statistics before getting involved in the associated calculations. Using words and diagrams instead of figures, formulae and equations, Derek Rowntree makes statistics accessible to those who are non-mathematicians. And just to get you into the spirit of things. Rowntree has included questions in his argument; answer them as you go and you will be able to tell how far you have mastered the subject.

     While a limited understanding of contrapuntal elements may be gained through analysis alone, these elements are grasped in a more intimate way through the actual writing of contrapuntal examples. Also, by linking the study of counterpoint to music of a specific period, the text provides a clear model for students to emulate and a definite basis for the criticism of student work.

    Emphasis is placed on the standardized and systematic process for initial assessment. It is the intent of the TNCC to enhance the nurse's ability to rapidly and accurately assess the patient's responses to the trauma event and to work within the context of a trauma team. It is anticipated that the knowledge and skills learned in the TNCC will ultimately contribute to a decrease in the morbidity and mortality associated with trauma. This Revised Printing of the new Sixth Edition of the TNCC's Provider Manual had been updated by members of the TNCC Revision Workgroup and trauma nursing experts in both the United States and internationally.

    Traditional mathematics teaching is largely about solving exactly stated problems exactly, yet life often hands us partly defined problems needing only moderately accurate solutions. This engaging book is an antidote to the rigor mortis brought on by too much mathematical rigor, teaching us how to guess answers without needing a proof or an exact calculation.In Street-Fighting Mathematics, Sanjoy Mahajan builds, sharpens, and demonstrates tools for educated guessing and down-and-dirty, opportunistic problem solving across diverse fields of knowledge--from mathematics to management. Mahajan describes six tools: dimensional analysis, easy cases, lumping, picture proofs, successive approximation, and reasoning by analogy. Illustrating each tool with numerous examples, he carefully separates the tool--the general principle--from the particular application so that the reader can most easily grasp the tool itself to use on problems of particular interest. Street-Fighting Mathematics grew out of a short course taught by the author at MIT for students ranging from first-year undergraduates to graduate students ready for careers in physics, mathematics, management, electrical engineering, computer science, and biology. They benefited from an approach that avoided rigor and taught them how to use mathematics to solve real problems.Street-Fighting Mathematics will appear in print and online under a Creative Commons Noncommercial Share Alike license.

    It covers such areas as biotechnology and biomedical engineering.

    This 4th Edition contains full-color illustrations from Netter's Atlas of Human Anatomy, 6th Edition paired with concise text identifying those structures and reviewing relevant anatomical information and clinical correlations. Online access at studentconsult lets you review anatomy from any computer, plus additional "bonus" cards and over 300 multiple-choice questions.A perfect study aid and complement to Netter's Clinical Anatomy, 3rd Edition?concise text and the Netter/Atlas of Human Anatomy, 6th Edition.Netter. It's how you know.

    Beginning at the intermediate level and ending at a level appropriate for the graduate student, this is a core text for upper level undergraduate and taught graduate microeconomics courses.

    The 4th Edition of this bestseller has been completely revised and reorganized to present a more up-to-date approach to the field, with less emphasis on traditional hospital-based practice. It uses the APGO/CREOG curriculum objectives as a framework, with a special emphasis on women's health issues. A new, full-color design with many illustrations and photographs complements the text. Plus, a free downloadable PDA software program provides a complete guide to the most common disorders. The smart way to study Elsevier titles STUDENT CONSULT will help you master difficult concepts and study more efficiently in print and online Perform rapid searches. Integrate bonus content from other disciplines. Download text to your handheld device. And a lot more. Each STUDENT CONSULT title comes with full text online, a unique image library, case studies, USMLE style questions, and online note-taking to enhance your learning experience.

    It is the ideal solution for the academic setting, multiple-day training, or individuals in need of more extensive food safety training. Food safety has never been more important to the restaurant industry and its customers. Based on the "2013""FDA Food Code, " the "ServSafe Coursebook" focuses on the preventative measures to keep food safe. The content in the "ServSafe Coursebook" goes beyond the principles found in the "ServSafe""Manager Book" and adds greater depth and breadth of food safety practices by featuring expanded sections on food defense, high-risk populations, active managerial control, and crisis management. Food safety topics are presented in a user-friendly, practical way with more real-world case studies and stories to help readers understand the day-to-day importance of food safety. Developed by the industry, for the industry, ServSafe(R) is a proven way to minimize risk and maximize protection for foodservice owners, employees, and customers. Recognized as the industry standard, ServSafe offers a complete suite of printed and online products and is the most important ingredient to food safety training and certification success. The "ServSafe Coursebook" is available packaged with MyServSafeLab(TM). MyServSafeLab is an online homework, tutorial, and assessment program that truly engages students in learning. It helps students better prepare for class, quizzes, and exams-resulting in better performance in the course-and provides educators a dynamic set of tools for gauging individual and class progress. The "ServSafe Coursebook" 6th Edition is available packaged in a number of ways to suit your specific needs. ISBN: 0133883507 is a package containing the book and the answer sheet for the pencil/paper version of the ServSafe Food Protection Manager exam" ServSafe Coursebook with Answer Sheet 6th Edition " Also available: Stand-alone book: "ServSafe Coursebook "6th Edition ISBN: 0133883604A package containing the book, the answer sheet for the pencil/paper version of the ServSafe Food Protection Manager exam, AND MyServSafeLab with Pearson eText Access Card: " ServSafe Coursebook with Answer Sheet, Revised Plus NEW MyServSafeLab with Pearson eText -- Access Card Package, "6/e ISBN: 0133962733A package containing the book and online exam voucher: "ServSafe Coursebook with Online Exam Voucher 6th Edition "ISBN: 0133883515A package containing the book, online exam voucher, AND MyServSafeLab with Pearson eText Access Card: "ServSafe Coursebook with Online Exam Voucher, Revised Plus NEW MyServSafeLab with Pearson eText -- Access Card Package, 6/e "ISBN: 0133962725Students, if interested in purchasing this title with MyServSafeLab, ask your instructor for the correct package ISBN. MyServSafeLab is not a self-paced technology and should only be purchased when required by an instructor. Instructors, contact your Pearson representative for more information.