This collection of papers presents ideas and problems arising over the past 100 years regarding classical and quantum gravity, gauge theories of gravity, and spacetime transformations of accelerated frames. Both Einstein's theory of gravity and the Yang-Mills theory are gauge invariant. The invariance principles in physics have transcended both kinetic and dynamic properties and are at the very heart of our understanding of the physical world. In this spirit, this book attempts to survey the development of various formulations for gravitational and Yang-Mills fields and spacetime transformations of accelerated frames, and to reveal their associated problems and limitations.The aim is to present some of the leading ideas and problems discussed by physicists and mathematicians. We highlight three aspects: formulations of gravity as a Yang-Mills field, first discussed by Utiyama; problems of gravitational theory, discussed by Feynman, Dyson and others; spacetime properties and the physics of fields and particles in accelerated frames of reference.These unfulfilled aspects of Einstein and Yang-Mills' profound thoughts present a great challenge to physicists and mathematicians in the 21st century.
This book addresses the global study of finite and infinite singularities of planar polynomial differential systems, with special emphasis on quadratic systems. While results covering the degenerate cases of singularities of quadratic systems have been published elsewhere, the proofs for the remaining harder cases were lengthier. This book covers all cases, with half of the content focusing on the last non-degenerate ones. The book contains the complete bifurcation diagram, in the 12-parameter space, of global geometrical configurations of singularities of quadratic systems. The authors’ results provide - for the first time - global information on all singularities of quadratic systems in invariant form and their bifurcations. In addition, a link to a very helpful software package is included. With the help of this software, the study of the algebraic bifurcations becomes much more efficient and less time-consuming. Given its scope, the book will appeal to specialists on polynomial differential systems, pure and applied mathematicians who need to study bifurcation diagrams of families of such systems, Ph.D. students, and postdoctoral fellows.
When the pressure is on, many of the world’s top CEOs turn to McKinsey & Company to reinvent themselves and their organizations. The Journey of Leadership brings the experience of one of the world’s most influential consulting firms right to your fingertips. This book is the first-ever explanation of McKinsey’s step-by-step approach to transforming leaders both professionally and personally, including revealing lessons from its legendary CEO leadership program, The Bower Forum, which has counseled more than five hundred global CEOs over the past decade. It is a journey that helps leaders hone the psychological, emotional, and, ultimately, human attributes that result in success in today’s most demanding top job. Packed with insightful and never-before-heard reflections from leaders, including Ed Bastian (CEO of Delta Air Lines), Makoto Uchida (CEO of Nissan Motor Corporation), Mark Fields (former CEO of Ford Motor Company), Reeta Roy (CEO of Mastercard Foundation), and Stéphane Bancel (CEO of Moderna), you will learn how to: Assess your personal leadership approach and style objectively. Discover your true mandate as a leader. Develop creative, actionable ways to reinvigorate both yourself and your organization. Create a personal commitment plan to inspire your team and cement your legacy. The Journey of Leadership is an invaluable resource for anyone running or hoping to run an organization in today’s ever-more-complex world.
Learn to develop professional applications with VB and the .NET platform in a unique building block approach. This guide also presents the basic concepts of the .NET framework, which is the common language.
Most popular books about science, and even about mathematics, tiptoe around equations as if they were something to be hidden from the reader's tender eyes. Dana Mackenzie starts from the opposite premise: He celebrates equations. No history of art would be complete without pictures. Why, then, should a history of mathematics--the universal language of science--keep the masterpieces of the subject hidden behind a veil? The Universe in Zero Words tells the history of twenty-four great and beautiful equations that have shaped mathematics, science, and society--from the elementary (1+1=2) to the sophisticated (the Black-Scholes formula for financial derivatives), and from the famous (E=mc2) to the arcane (Hamilton's quaternion equations). Mackenzie, who has been called "a popular-science ace" by Booklist magazine, lucidly explains what each equation means, who discovered it (and how), and how it has affected our lives. Illustrated in color throughout, the book tells the human and often-surprising stories behind the invention or discovery of the equations, from how a bad cigar changed the course of quantum mechanics to why whales (if they could communicate with us) would teach us a totally different concept of geometry. At the same time, the book shows why these equations have something timeless to say about the universe, and how they do it with an economy (zero words) that no other form of human expression can match. The Universe in Zero Words is the ultimate introduction and guide to equations that have changed the world.
As two of the leading MVC web frameworks for Python, Django and TurboGears allow you to develop and launch sites in a fraction of the time compared to traditional techniques and they provide greater stability, scalability, and management than alternatives. Packed with examples, this book will help you discover a new methodology for designing, coding, testing, and deploying rich web applications. A team of expert authors shows you the power of MVC frameworks and the capabilities of the TurboGears and Django packages. The Django chapters show you how to automate production of common web development tasks, portal creation, and content management, so you can focus on higher-level application issues and design. The TurboGears chapters illustrate how to rapidly create modern, highly interactive Web 2.0 applications. For both frameworks, you'll create useful applications that exemplify common Web 2.0 design paradigms and their solutions. Ultimately, you'll leverage your Python skills using Django and TurboGears and go from novice to RIA expert. What you will learn from this book * How you can use frameworks to save you time and frustration in the development cycle * The elements, differences, and similarities of the TurboGears and Django frameworks * Advanced capabilities of both frameworks and how they easily solve issues common to web applications * Approaches to simplifying your client side JavaScript(r) with MochiKit, a Pythonic JavaScript library * How to pair TurboGears with Flash for even more possibilities Who this book is for This book is for Python developers who want to learn rapid Web 2.0 development techniques using frameworks and incorporating a model-view-controller architecture. Wrox Professional guides are planned and written by working programmers to meet the real-world needs of programmers, developers, and IT professionals. Focused and relevant, they address the issues technology professionals face every day. They provide examples, practical solutions, and expert education in new technologies, all designed to help programmers do a better job.
The industrial food system, from production to consumption and waste, is a major contributor to environmental, social and economic problems. A few powerful multinational corporations have consolidated control of agricultural markets and wealth while many farmers struggle to make a living and millions of people go hungry every day. Consumer access to healthy and culturally appropriate food remains largely an option for only those who can afford it. Responding to these destructive practices, global agrarian movements are calling for a transition to agroecology. Agroecological farming follows ecological principles for growing food in a way that respects diverse sociocultural contexts, connects urban eaters and rural growers and attends to power dynamics. Growing and Eating Sustainably shines light on the process of agroecological transition by showcasing the experiences of growers and eaters in southern Brazil, a country where agrarian movements have long been at the forefront of pushing for more sustainable and just food systems. Through stories and photographs of people, landscapes, farms and farming practices, and urban spaces, this book communicates how to advance systems-level agroecological transitions by linking rural and urban areas and connecting diverse agroecological experiences.
This book provides excellent techniques for detecting and evaluating biofilms: sticky films on materials that are formed by bacterial activity and produce a range of industrial and medical problems such as corrosion, sanitary problems, and infections. Accordingly, it is essential to control biofilms and to establish appropriate countermeasures, from both industrial and medical viewpoints. This book offers valuable, detailed information on these countermeasures. It also discusses the fundamentals of biofilms, relates various substrates to biofilms, and presents a variety of biofilm reactors. However, the most important feature of this book (unlike others on the market) is its clear focus on addressing the practical aspects from an engineering viewpoint. Therefore, it offers an excellent practical guide for engineers and researchers in various fields, and can also be used as a great academic textbook.
Architectural history is more than just the study of buildings. Architecture of the past and present remains an essential emblem of a distinctive social system and set of cultural values and as a result it has been the subject of study of a variety of disciplines. But what is architectural history and how should we read it? Reading Architectural History examines the historiographic and socio/cultural implications of the mapping of British architectural history with particular reference to eighteenth - and nineteenth-century Britain. Discursive essays consider a range of writings from biographical and social histories to visual surveys and guidebooks to examine the narrative structures of histories of architecture and their impact on perception adn understanding of the architecture of the past. Alongside this, each chapter cites canonical histories juxtaposed with a range of social and cultural theorists, to reveal that these writings are richer than we have perhaps recognised and that architectural production in this period can in interrogated in the same way as that from more recent past - and can be read in a variety of ways. The essays and texts combine to form an essential course reader for methods and critical approached to architectural history, and more generally as examples of the kind of evidence used in the formation of architectural histories, while also offering a thematic introduction to architecture in Britain and its social and cultural meaning.
Escaping a brutal blood feud in the fertile Ohio Valley, brothers Clay and Jefferson Holt strike out for new territories, unaware that a shadowy killer is following their every move.
This book offers a series of interviews with Canadian ranchers that highlight the innovative and effective ways that they manage vast swaths of grassland for two complementary goals: commercial viability and sustainable habitats. The book’s author is an academic who grew up among ranchers in the grasslands of Canada, and the expertise and viewpoints she has distilled from these interviews complement the academic literature in accessible and surprising ways . As these productive landscapes face increasingly perilous threats such as development, economic pressures, and extreme weather events, it is the ranchers who live on and manage these native grasslands who are passionate about conserving them. This book is about them, their experiences and the realities of their lives, their view of the world, sharing their knowledge to assist younger ranchers, and their contributions to Canada’s species at risk conservation goals, food security and economy. The book offers practical advice for ranchers, but also reveals the depth of attachment and dedication these ranchers have for the grasslands. They are conservationists at heart, as they not only understand that their livelihood is dependent on the health of the ecosystem they manage, but they also have a deep connection to the land, nurtured oftentimes for many generations. Academics and ranchers have much to learn here, but the book – most of which is the words of the ranchers themselves - is written to give the general public an understanding of this vocation and its role in the conservation of our last remaining grasslands.
With nearly six hundred identified species of birds—and an average of five "new" species discovered annually—Belize is becoming a birding hotspot for amateur and professional birders from around the globe. Thousands of birders visit the country each year to enjoy Belize's amazing abundance and variety of both temperate and tropical birds in natural habitats that remain largely unspoiled. But until now, despite the growing need for an authoritative identification guide, birders have had to rely on regional field guides that offer only limited information on Belizean birds. Birds of Belize provides the first complete guide to the identification of all currently known species—574 in all. The birds are grouped by families, with an introduction to each family that highlights its uniquely identifying characteristics and behaviors. The species accounts include all the details necessary for field identification: scientific and common names, size, plumage features, thorough voice descriptions, habitat, distribution, and status in Belize. Full color, expertly drawn illustrations by noted bird artist Dana Gardner present male and female, juvenile and adult, and basic and alternate plumages to aid visual identification throughout the year, while 234 range maps show the birds' distribution and seasonality in Belize. A comprehensive bibliography completes the volume.
The 2nd edition of Research Methods for Social Psychology offers information on how to conduct empirical research in social psychology. The author teaches readers to think like experimental social psychologists, that is, to use or develop explanatory theories and to manipulate and measure variables in order to explain the origin or purpose of some aspect of social life. It provides information to perform research projects on human social behavior from start to finish, from selecting a research topic to collecting and analyzing data to writing up and the results using the American Psychological Association’s required format (i.e., APA-style). Along the way, they will learn about the particular ethical issues social psychologists face, the logic of experimental design, alternative research approaches, sorting accuracy from error in research, and how to orally present their findings, among other issues. This book contains up-to-date scholarship and emphasizes active learning through pedagogical activities and exercises designed to help students design and execute their own social psychological research.
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