Measuring Time with Artifacts


Book Description

Combining historical research with a lucid explication of archaeological methodology and reasoning, Measuring Time with Artifacts examines the origins and changing use of fundamental chronometric techniques and procedures and analyzes the different ways American archaeologists have studied changes in artifacts, sites, and peoples over time. In highlighting the underpinning ontology and epistemology of artifact-based chronometers?cultural transmission and how to measure it archaeologically?this volume covers issues such as why archaeologists used the cultural evolutionism of L. H. Morgan, E. B. Tylor, L. A. White, and others instead of biological evolutionism; why artifact classification played a critical role in the adoption of stratigraphic excavation; how the direct historical approach accomplished three analytical tasks at once; why cultural traits were important analytical units; why paleontological and archaeological methods sometimes mirror one another; how artifact classification influences chronometric method; and how graphs illustrate change in artifacts over time. An understanding of the history of artifact-based chronometers enables us to understand how we know what we think we know about the past, ensures against modern misapplication of the methods, and sheds light on the reasoning behind archaeologists' actions during the first half of the twentieth century.




Electrochemical Impedance Spectroscopy


Book Description

Provides fundamentals needed to apply impedance spectroscopy to a broad range of applications with emphasis on obtaining physically meaningful insights from measurements. Emphasizes fundamentals applicable to a broad range of applications including corrosion, biomedical devices, semiconductors, batteries, fuel cells, coatings, analytical chemistry, electrocatalysis, materials, and sensors Provides illustrative examples throughout the text that show how the principles are applied to common impedance problems New Edition has improved pedagogy, with more than twice the number of examples New Edition has more in-depth treatment of background material needed to understand impedance spectroscopy, including electrochemistry, complex variables, and differential equations New Edition includes expanded treatment of the influence of mass transport and kinetics and reflects recent advances in understanding frequency dispersion and constant-phase elements




Radio Propagation Measurements and Channel Modeling: Best Practices for Millimeter-Wave and Sub-Terahertz Frequencies


Book Description

This book offers comprehensive, practical guidance on RF propagation channel characterization at mmWave and sub-terahertz frequencies, with an overview of both measurement systems and current and future channel models. It introduces the key concepts required for performing accurate mmWave channel measurements, including channel sounder architectures, calibration methods, channel sounder performance metrics and their relationship to propagation channel characteristics. With a comprehensive introduction to mmWave channel models, the book allows readers to carefully review and select the most appropriate channel model for their application. The book provides fundamental system theory accessible in a step by step way with clear examples throughout. With inter- and multidisciplinary perspectives, the reader will observe the tight interaction between measurements and modeling for these frequency bands and how different disciplines interact. This is an excellent reference for researchers, including graduate students, working on mmWave and sub-THz wireless communications, and for engineers developing communication systems.




Applying Evolutionary Archaeology


Book Description

Anthropology, and by extension archaeology, has had a long-standing interest in evolution in one or several of its various guises. Pick up any lengthy treatise on humankind written in the last quarter of the nineteenth century and the chances are good that the word evolution will appear somewhere in the text. If for some reason the word itself is absent, the odds are excellent that at least the concept of change over time will have a central role in the discussion. After one of the preeminent (and often vilified) social scientists of the nineteenth century, Herbert Spencer, popularized the term in the 1850s, evolution became more or less a household word, usually being used synonymously with change, albeit change over extended periods of time. Later, through the writings of Edward Burnett Tylor, Lewis Henry Morgan, and others, the notion of evolution as it applies to stages of social and political development assumed a prominent position in anthropological disc- sions. To those with only a passing knowledge of American anthropology, it often appears that evolutionism in the early twentieth century went into a decline at the hands of Franz Boas and those of similar outlook, often termed particularists. However, it was not evolutionism that was under attack but rather comparativism— an approach that used the ethnographic present as a key to understanding how and why past peoples lived the way they did (Boas 1896).




Spatial Awareness of Autonomous Embedded Systems


Book Description

Clemens Holzmann investigates the role of spatial contexts for autonomous embedded systems. The author presents concepts for recognizing, representing, and reasoning about qualitative spatial relations and their changes over time, as well as an appropriate architecture which has prototypically been implemented in a flexible software framework. His results show that the proposed concepts are suitable for developing spatially aware applications and that qualitatively abstracted relations can constitute an adequate basis for this purpose.




Encyclopedia of Time


Book Description

Surveying the major facts, concepts, theories, and speculations that infuse our present comprehension of time, the Encyclopedia of Time: Science, Philosophy, Theology, and Culture explores the contributions of scientists, philosophers, theologians, and creative artists from ancient times to the present. By drawing together into one collection ideas from scholars around the globe and in a wide range of disciplines, this Encyclopedia will provide readers with a greater understanding of and appreciation for the elusive phenomenon experienced as time. Features · Surveys historical thought about time, including those that emerged in ancient Greece, early Christianity, the Italian Renaissance, the Age of Enlightenment, and other periods+ Covers the original and lasting insights of evolutionary biologist Charles Darwin, physicist Albert Einstein, philosopher Alfred North Whitehead, and theologian Pierre Teilhard de Chardin + Discusses the significance of time in the writings of Isaac Asimov, Samuel Taylor Coleridge, Fyodor M. Dostoevsky, Francesco Petrarch, and numerous other authors+ Includes the contributions of naturalists, philosophers, physicists, theologians, astronomers, anthropologists, geologists, paleontologists, and psychologists+ Includes artists+ portrayals of the fluidity of time, including painter Salvador Dali+s The Persistence of Memory and The Discovery of America by Christopher Columbus, and writers Gustave Flaubert+s The Temptation of Saint Anthony and Henryk Sienkiewicz+s Quo Vadis+ Provides a truly interdisciplinary approach, with discussions of Aztec, Buddhist, Christian, Egyptian, Ethiopian, Islamic, Hindu, Navajo, and many other cultures+ conceptions of time







Seriation, Stratigraphy, and Index Fossils


Book Description

It is difficult for today's students of archaeology to imagine an era when chronometric dating methods were unavailable. However, even a casual perusal of the large body of literature that arose during the first half of the twentieth century reveals a battery of clever methods used to determine the relative ages of archaeological phenomena, often with considerable precision. Stratigraphic excavation is perhaps the best known of the various relative-dating methods used by prehistorians. Although there are several techniques of using artifacts from superposed strata to measure time, these are rarely if ever differentiated. Rather, common practice is to categorize them under the heading `stratigraphic excavation'. This text distinguishes among the several techniques and argues that stratigraphic excavation tends to result in discontinuous measures of time - a point little appreciated by modern archaeologists. Although not as well known as stratigraphic excavation, two other methods of relative dating have figured important in Americanist archaeology: seriation and the use of index fossils. The latter (like stratigraphic excavation) measures time discontinuously, while the former - in various guises - measures time continuously. Perhaps no other method used in archaeology is as misunderstood as seriation, and the authors provide detailed descriptions and examples of each of its three different techniques. Each method and technique of relative dating is placed in historical perspective, with particular focus on developments in North America, an approach that allows a more complete understanding of the methods described, both in terms of analytical technique and disciplinary history. This text will appeal to all archaeologists, from graduate students to seasoned professionals, who want to learn more about the backbone of archaeological dating.




Optical Techniques in Regenerative Medicine


Book Description

In regenerative medicine, tissue engineers largely rely on destructive and time-consuming techniques that do not allow in situ and spatial monitoring of tissue growth. Furthermore, once the therapy is implanted in the patient, clinicians are often unable to monitor what is happening in the body. To tackle these barriers, optical techniques have bee




Imaging of the Larynx


Book Description

Notwithstanding the important role of direct clinical and endoscopic examination in modern management of pathological conditions of the larynx, radiological study the and, more specifically, cross-sectional imaging by CT and MRI make definite diagnostic contributions by virtue of their potential to display superbly the deeper extent of laryngeal lesions. Indeed, remarkable progress has been achieved during recent years in CT and MRI techniques as applied to the neck region. This book sets out to provide a sorely needed update of our knowledge of the diagnostic potential of these cross-sectional methods and constitutes a very welcome addition to our series "Medical Radiology", which aims to cover all important clinical imaging fields of modern diagnostic radiology. It will be of great interest to general and head and neck radiologists as well as to ENT surgeons and radiotherapists. Professor R. Hermans and the other distinguished contributors to this work are internationally renowned experts in the field and they have accumulated vast experi ence and a wealth of radio-pathological knowledge of the larynx over the years. I would like to congratulate them most sincerely for this outstanding volume, its comprehensive contents and its superb illustrations. I hope that this book will meet with the same great success as previously published volumes in the series. I would appreciate any constructive criticism that might be offered.