Defining And Measuring Nature

Weights and measures form an essential part of our ingrained view of the world. It is just about impossible to function effectively without some internalized system of measurement. In this volume, I outline a history of the science of measurement, and the

Measurement forms an essential part of our view of the world. Our world is measured and calibrated, and we are all subject to the tyranny of these numbers. In this updated and extended edition, Jeffrey Huw Williams outlines the history of measurement; particularly of the International System of units (SI). Since the previous edition, the base units of the SI have been redefined; realizing a 150-year-old dream for a measurement system based on unchanging, fundamental quantities of nature. This change has created a new SI, a Quantum SI, which will significantly change the way we look at nature in a quantitative manner, and greatly facilitate the advance of science. Key Features Significantly updated and extended new edition The first book to include the new Quantum SI base unit definitions Features wider societal and philosophical implications of a move away from physical standards Outlines the history of the science of measurement, and the origin of the Metric System More than a textbook of metrology, it is also a history of how we have arrived at the Quantum SI

This User’s Guide is a resource for investigators and stakeholders who develop and review observational comparative effectiveness research protocols. It explains how to (1) identify key considerations and best practices for research design; (2) build a protocol based on these standards and best practices; and (3) judge the adequacy and completeness of a protocol. Eleven chapters cover all aspects of research design, including: developing study objectives, defining and refining study questions, addressing the heterogeneity of treatment effect, characterizing exposure, selecting a comparator, defining and measuring outcomes, and identifying optimal data sources. Checklists of guidance and key considerations for protocols are provided at the end of each chapter. The User’s Guide was created by researchers affiliated with AHRQ’s Effective Health Care Program, particularly those who participated in AHRQ’s DEcIDE (Developing Evidence to Inform Decisions About Effectiveness) program. Chapters were subject to multiple internal and external independent reviews. More more information, please consult the Agency website: www.effectivehealthcare.ahrq.gov)

"This book, which is in its second edition, provides a provocative mirror from which to discern more clearly one's own assumptions about human nature. . . . I found myself reflecting on the subject matter and its impact on my own life, including relationships, teaching, research, and therapy. . . . The author has done a superb job of raising our consciousness about human nature in this book, an I strongly recommend it to academic and applied psychologists. If you need an invitation to examine your views about human nature, this book is it." --C. R. Snyder, University of Kansas, Lawrence In general, are people trustworthy or unreliable, altruistic or selfish? Are they simple and easy to understand or complex and beyond comprehension? Our assumptions about human nature color everything from the way we bargain with a used-car dealer to our expectations about further conflict in the Middle East. Because our assumptions about human nature underlie our reactions to specific events, Wrightsman designed this second edition to enhance our understanding of human nature--the relationship of attitudes to behavior, the unidimensionality of attitudes, and the influence of social movements on beliefs. Psychologists, social workers, researchers, and students will find Assumptions About Human Nature an illuminating exploration into the philosophies of human nature.