Visionary physicist Geoffrey West is a pioneer in the field of complexity science, the science of emergent systems and networks... Fascinated by issues of aging and mortality, West applied the rigor of a physicist to the biological question of why we live as long as we do and no longer. The result was astonishing, and changed science, creating a new understanding of energy use and metabolism: West found that despite the riotous diversity in the sizes of mammals, they are all, to a large degree, scaled versions of each other... West's work has been gaming changing for biologists, but then he made the even bolder move of exploring his work's applicability...and applied...[it] to the business and social world."--
This is science writing as wonder and as inspiration." —The Wall Street Journal Wall Street Journal From one of the most influential scientists of our time, a dazzling exploration of the hidden laws that govern the life cycle of everything from plants and animals to the cities we live in. Visionary physicist Geoffrey West is a pioneer in the field of complexity science, the science of emergent systems and networks. The term “complexity” can be misleading, however, because what makes West’s discoveries so beautiful is that he has found an underlying simplicity that unites the seemingly complex and diverse phenomena of living systems, including our bodies, our cities and our businesses. Fascinated by aging and mortality, West applied the rigor of a physicist to the biological question of why we live as long as we do and no longer. The result was astonishing, and changed science: West found that despite the riotous diversity in mammals, they are all, to a large degree, scaled versions of each other. If you know the size of a mammal, you can use scaling laws to learn everything from how much food it eats per day, what its heart-rate is, how long it will take to mature, its lifespan, and so on. Furthermore, the efficiency of the mammal’s circulatory systems scales up precisely based on weight: if you compare a mouse, a human and an elephant on a logarithmic graph, you find with every doubling of average weight, a species gets 25% more efficient—and lives 25% longer. Fundamentally, he has proven, the issue has to do with the fractal geometry of the networks that supply energy and remove waste from the organism’s body. West’s work has been game-changing for biologists, but then he made the even bolder move of exploring his work’s applicability. Cities, too, are constellations of networks and laws of scalability relate with eerie precision to them. Recently, West has applied his revolutionary work to the business world. This investigation has led to powerful insights into why some companies thrive while others fail. The implications of these discoveries are far-reaching, and are just beginning to be explored. Scale is a thrilling scientific adventure story about the elemental natural laws that bind us together in simple but profound ways. Through the brilliant mind of Geoffrey West, we can envision how cities, companies and biological life alike are dancing to the same simple, powerful tune.
The archaeological sites of Mexico's Yucatan peninsula are among the most visited ancient cities of the Americas. Archaeologists have recently made great advances in our understanding of the social and political milieu of the northern Maya lowlands. However, such advances have been under-represented in both scholarly and popular literature until now. 'The Ancient Maya of Mexico' presents the results of new and important archaeological, epigraphic, and art historical research in the Mexican states of Yucatan, Campeche, and Quintana Roo. Ranging across the Middle Preclassic to the Modern periods, the volume explores how new archaeological data has transformed our understanding of Maya history. 'The Ancient Maya of Mexico' will be invaluable to students and scholars of archaeology and anthropology, and all those interested in the society, rituals and economic organisation of the Maya region.
Although many people rarely go from Excel into Access or vice versa, you should know that Microsoft actually designed these applications to work together. In this book, you’ll discover how Access benefits from Excel’s flexible presentation layer and versatile analysis capabilities, while Access’s relational database structure and robust querying tools enhance Excel. Once you learn to make the two work together, you’ll find that your team’s productivity is the real winner.
Communication Services via Satellite: A Handbook for Design, Installation, and Service Engineers, Second Edition focuses on the innovations made by satellites in the field of communications. The publication first elaborates on basic concepts, noise and interference, and electromagnetic waves, propagation, and antennas. Discussions focus on frequency-selective surfaces and planar antennas, reflection, refraction, depolarization, and feeds, primary properties of antennas, energy in free space, comparison of noise factor and temperature, and system constraints imposed by transponder characteristics. The text then examines microwave circuit elements, digital signal processing, and digital and digital/analogue communications systems. Concerns include bandwidth compression video codec, satellite weather and environmental services, quadrature mirror filters and sub-band coding, baseband code formats, coupling to cavities and waveguides, and circulators and isolators. The manuscript takes a look at installation and servicing, information security and conditional access, television and radio audio channels, television receivers and distribution systems, and television systems. The publication is a dependable source of information for communication experts and researchers interested in the use of satellites in communications.
Some people do their jobs in Arctic blizzards or fierce storms on the high seas. For some people, crawling through dark caves, climbing into sewers, searching through animal droppings, or even driving a car off a cliff is all in a day's work. Who does jobs like these, why do they do them, and how do they stay safe doing them? You'll find out in Dirty and Dangerous Jobs. The men and women who drive race cars get a lot of attention. But behind the scenes, all of these people have a pit crew that helps them win races. Pit crew workers must change tires, add fuel, and make repairs at lightning speed during every race. It's greasy, smelly, often dangerous work-and they wouldn't have it any other way. Book jacket.
Debate has been fierce about the date and extent of influence of the central Mexican culture of Teotihuaca on the Maya. This volume, which aims to bring the debate up-to-date, comprises thirteen essays that draw on recent archaeological evidence, particularly burials and ceramic assemblages, to recreate the region's ethnicity during the Early Classic period. Evidence of interaction is also found in carved monuments and architectural design. Includes an extensive bibliography.
The new third edition of Pediatric Stroke and Cerebrovascular Disorders provides a modern clinical approach to managing stroke and other cerebrovascular problems in infants, children, and adolescents. Incorporating data from important clinical trials and case series, recommendations from the American Heart Association evidence-based paper on the management of pediatric stroke, and the latest information on new diagnostic techniques, the book offers a comprehensive analysis of the current thinking and practice by three physicians who have vast clinical experience in this challenging field. The third edition of this classic work has been completely updated and rewritten to reflect current science and practice. Covering occurrence, etiology, diagnosis, and treatment, this integrated state-of-the-art text is essential reading for anyone involved in the care of children with suspected stroke or other cerebrovascular abnormalities. The third edition of this classic work has been completely updated and rewritten to reflect current science and practice. An extensive, entirely new chapter on treatment provides specific guidance on when to use antiplatelet agents, anticoagulants, and thrombolytic agents in children and also includes a section on neurorehabilitation after stroke. An expanded and thoroughly updated diagnostic approach chapter covers the latest applications in stroke imaging such as computed tomography angiography, diffusion weighted MRI, and perfusion CT. The first chapter stresses the etiology and pathophysiology of childhood stroke as the basis for evaluations and treatment. Features of Pediatric Stroke and Cerebrovascular Disorders, Third Edition Include: Comprehensive in scope: detailed analysis of the pathogenesis, diagnosis, and treatment of cerebrovascular disorders in children with many evidence-based management guidelines The third edition has been updated to include recommendations from the AHA consensus guidelines All chapters in the third edition have been revised and updated An extensive, entirely new chapter on treatment provides specific guidance on when to use antiplatelet agents, anticoagulants, and thrombolytic agents in children Stresses the etiology and pathophysiology of childhood stroke as the basis for evaluation and treatment Maintains the practical, clinical flavor established in previous editions, with numerous illustrations and useful suggestions for patient care Written by internationally known stroke experts: Dr. Roach chaired the AHA panel that produced the consensus guidelines on childhood stroke and Drs. Lo and Heyer have published extensively on stroke and related topics
Rev. ed. of: Pediatric cerebrovascular disorders / E.S. Roach, Anthony R. Riela; with a foreword by Roger N. Rosenberg; chapters by Susan T. Iannaccone and Jeffrey Perlman. 1995. 2nd ed.
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