Download or read book Ontogeny of Bipedalism written by Angel Diane Zeininger and published by . This book was released on 2013 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique pattern of pedal loading from heel-strike at touchdown to hallucal propulsion at toe-off is a distinct feature of mature human bipedalism, however, its first appearance in the fossil record is debated. The main goal of this dissertation is to identify anatomical correlates to a modern human heel-strike, rigid foot, and propulsive hallucal toe-off. First, a biomechanical analysis of toddler walking is used as a 'natural experiment' to investigate the influence of non heel-strike (NHS, n = 11) and immature heel-strike (IHS, n = 7) on the location of the center of pressure and orientation of the ground reaction force resultant in relation to specific foot bones during stance phase. With an expanded knowledge of foot bone loading in toddlers, a microarchitectural approach is used to test the influence of a heel-strike, rigid foot, and propulsive hallucal toe-off on trabecular bone fabric properties in an ontogenetic series of human and African ape (chimpanzee, bonobo, and gorilla) calcanei, tali, first metatarsal heads and hallucal distal phalanges. This dissertation presents the first ontogenetic analysis of pedal trabecular bone in primates. Heel-strike and toe-off are developmentally independent from one another. Although most toddlers lack a hallucal toe-off, NHS and IHS apply equally high propulsive forces when the entire width of their forefoot is in contact with the ground. Biomechanical and fossil evidence suggest that a generalized active propulsion may have preceded the evolution of a propulsive hallucal toe-off. Although pedal trabecular fabric properties are more complex than predicted, trabecular correlates to heel-strike and hallucal toe-off are identified within adult human foot bones. Compared to toddlers and African apes, adult humans have a unique combination of relatively thick trabecular struts and an anteroplantar to posterodorsal primary trabecular orientation in the plantar aspect of the calcaneal tuber. In the calcaneal tendon volume of interest, adult humans have a unique anteroplantar to posterodorsal primary trabecular orientation associated with a propulsive hallucal toe-off. This dissertation provides the comparative context necessary to begin assessing the evolution and developmental timing of foot function and specific bipedal gait events in juvenile and adult fossil hominins.
Download or read book Bipedal by Pedal written by Joe Biel and published by Microcosm Pub. This book was released on 2010-05 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the second issue of the Expozine Award–winning Bipedal, By Pedal, editor Joe Biel has collected legal documents pertaining to the Portland Police Department's nefarious, illegal crackdown campaign on the local Critical Mass movement. Obtained by Freedom of Information Act requests, Biel shows through once-secret police and court documents that Portland Critical Mass did not in fact die out: it was brutally torn down by the cops in an organized campaign of intimidation and spy work. A rally call for bike activists, this zine is a companion piece to Biel's upcoming documentary, Aftermass: A Post Critical Mass Portland. For a humorous touch, the police documents are redone as Mad Libs.
Download or read book Bipedal By Pedal written by Joe Biel and published by Microcosm Publishing. This book was released on 2014-11-28 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this, the third issue of Joe Biel's award-winning, ongoing look at the Critical Mass movement, we are given a well-researched analysis at the history of bicycle activism and police spying in Portland, Oregon. The result is an engaging and readable combination of story, activism, and history. Over the course of 44 pages, Biel looks at why a city so bike-friendly as Portland has virtually no Critical Mass ride, while cataloging the ways the Portland Police Department has interacted with local riders and historic activism. Says Biel, "It's concerning how many times a cyclist has repeated to me the police's version of Portland's cycling history or how years later new rumors are created about what happened." Strange and inspiring, Bipedal, By Pedal #3 is essential, illuminating reading for cyclists and non-cyclists alike.
Download or read book Bipedal by Pedal written by Joe Biel and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issue 3: A history of bicycle activism in Portland, Oregon, including information about the relationships between the police and Critical Mass in Portland.
Download or read book Handbook of Paleoanthropology written by Winfried Henke and published by Springer Science & Business Media. This book was released on 2007-05-10 with total page 2057 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 3-volume handbook brings together contributions by the world ́s leading specialists that reflect the broad spectrum of modern palaeoanthropology, thus presenting an indispensable resource for professionals and students alike. Vol. 1 reviews principles, methods, and approaches, recounting recent advances and state-of-the-art knowledge in phylogenetic analysis, palaeoecology and evolutionary theory and philosophy. Vol. 2 examines primate origins, evolution, behaviour, and adaptive variety, emphasizing integration of fossil data with contemporary knowledge of the behaviour and ecology of living primates in natural environments. Vol. 3 deals with fossil and molecular evidence for the evolution of Homo sapiens and its fossil relatives.
Download or read book Bipedal Robots written by Christine Chevallereau and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents various techniques to carry out the gait modeling, the gait patterns synthesis, and the control of biped robots. Some general information on the human walking, a presentation of the current experimental biped robots, and the application of walking bipeds are given. The modeling is based on the decomposition on a walking step into different sub-phases depending on the way each foot stands into contact on the ground. The robot design is dealt with according to the mass repartition and the choice of the actuators. Different ways to generate walking patterns are considered, such as passive walking and gait synthesis performed using optimization technique. Control based on the robot modeling, neural network methods, or intuitive approaches are presented. The unilaterality of contact is dealt with using on-line adaptation of the desired motion.
Download or read book Bipedal by Pedal written by Joe Biel and published by Bicycle. This book was released on 2007-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: ?Experiences & thoughts around the Critical Mass bicycle movement!? -from cover.
Download or read book Feedback Control of Dynamic Bipedal Robot Locomotion written by Eric R. Westervelt and published by CRC Press. This book was released on 2018-10-03 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bipedal locomotion is among the most difficult challenges in control engineering. Most books treat the subject from a quasi-static perspective, overlooking the hybrid nature of bipedal mechanics. Feedback Control of Dynamic Bipedal Robot Locomotion is the first book to present a comprehensive and mathematically sound treatment of feedback design for achieving stable, agile, and efficient locomotion in bipedal robots. In this unique and groundbreaking treatise, expert authors lead you systematically through every step of the process, including: Mathematical modeling of walking and running gaits in planar robots Analysis of periodic orbits in hybrid systems Design and analysis of feedback systems for achieving stable periodic motions Algorithms for synthesizing feedback controllers Detailed simulation examples Experimental implementations on two bipedal test beds The elegance of the authors' approach is evident in the marriage of control theory and mechanics, uniting control-based presentation and mathematical custom with a mechanics-based approach to the problem and computational rendering. Concrete examples and numerous illustrations complement and clarify the mathematical discussion. A supporting Web site offers links to videos of several experiments along with MATLAB® code for several of the models. This one-of-a-kind book builds a solid understanding of the theoretical and practical aspects of truly dynamic locomotion in planar bipedal robots.
Download or read book From Biped to Strider written by D. Jeffrey Meldrum and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inspiration for this volume of contributed papers stemmed from conversations between the editors in front of Chuck Hilton's poster on the determinants of hominid walking speed, presented at thel998 meetings of the American Association of Physical Anthropologists (AAPA). Earlier at those meetings, Jeff Meldrum (with Roshna Wunderlich) had presented an alternate interpretation of the Laetoli footprints based on evidence of midfoot flexibility. As the discussion ensued we found convergence on a number of ideas about the nature of the evolution of modem human walking. From the continuation of that dialogue grew the proposal for a symposium which we called From Biped to Strider: the Emergence of Modem Human Walking. The symposium was held as a session of the 69th annual meeting of the AAPA, held in San Antonio, Texas in 2000. It seemed to us that the study of human bipedalism had become overshadowed by theoften polarized debates over whether australo pithecines were wholly terrestrial in habit, or retained a significant degree of arboreality.
Download or read book The Chordates written by R. McNeill Alexander and published by CUP Archive. This book was released on 1981-08-06 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anthropology written by Indrani Basu Roy and published by S. Chand Publishing. This book was released on 2010 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook includes -Physical Anthropology, Prehistory and Social-Cultural Anthropology. For Students of Anthropologyin Indian Universities. This is a valuable textbook of Anthropology which aims to serve all students of Anthropology. Each of these parts deal with specific portion of the subject matter and corresponds to the major branches of Anthropology. The book offers has been written lucidly in simple language with plenty of examples. It offers a blueprints for the subject Anthropology as such as to satisfy the general readers also who are enthusiastic to know more and more Man.
Download or read book A Companion to Paleoanthropology written by David R. Begun and published by John Wiley & Sons. This book was released on 2012-12-20 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Companion to Paleoanthropology presents a compendium of readings from leading scholars in the field that define our current knowledge of the major discoveries and developments in human origins and human evolution, tracing the fossil record from primate and hominid origins to the dispersal of modern humans across the globe. Represents an accessible state-of-the-art summary of the entire field of paleoanthropology, with an overview of hominid taxonomy Features articles on the key discoveries in ape and human evolution, in cranial, postcranial and brain evolution, growth and development Surveys the breadth of the paleontological record from primate origins to modern humans Highlights the unique methods and techniques of paleoanthropology, including dating and ecological methods, and use of living primate date to reconstruct behavior in fossil apes and humans
Download or read book The system of species of African bipedal primates from 6 2 0 9 mya written by Sergey Vyrskiy and published by Litres. This book was released on 2022-01-29 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here we report the establishment of a family relation system between the species of African bipedal primates observed in deposits from 6.2 to 0.9 million years ago (mya).For this purpose, the author presents a single method of assigning diagnostic “weight” when conducting character assessment of fossilized remains and has also formulated several equations and ratios that make use of morphometric measurements and can be used to predict the crucial parameters of paleontological individuals, such as body weight, endocranial volume, and cerebral index, and identify their diet.Having simultaneously considered all the morphometric descriptions of the bone remains of bipedal primates and, by a single method of character evaluation, having established the degree of their affinity, the author reconstructed the phyletic lines, uniting almost all diagnostically significant samples and systematized paleoanthropological material of the 6.2–0.9 mya period.The evaluation of the phyletic-associated fossils, in compliance with the Biological Species Concept (E. Mayr), revealed the existence of only two species of bipedal primates in the African continent at the beginning of the period under consideration. Later, a new, third, species emerged, the formation of which correlated with the exponential increase in the cerebral index and the advent of the first stone tools.
Download or read book Reading Prehistoric Human Tracks written by Andreas Pastoors and published by Springer Nature. This book was released on 2021 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Open Access book explains that after long periods of prehistoric research in which the importance of the archaeological as well as the natural context of rock art has been constantly underestimated, research has now begun to take this context into focus for documentation, analysis, interpretation and understanding. Human footprints are prominent among the long-time under-researched features of the context in caves with rock art. In order to compensate for this neglect an innovative research program has been established several years ago that focuses on the merging of indigenous knowledge and western archaeological science for the benefit of both sides. The book gathers first the methodological diversity in the analysis of human tracks. Here major representatives of anthropological, statistical and traditional approaches feature the multi-layered methods available for the analysis of human tracks. Second it compiles case studies from around the globe of prehistoric human tracks. For the first time, the most important sites which have been found worldwide are published in a single publication. The third focus of this book is on firsthand experiences of researchers with indigenous tracking experts from around the globe, expounding on how archaeological sciencecan benefit from the ancestral knowledge. This book will be of interest to professional archaeologists, graduate students, ecologists, cultural anthropologists and laypeople, especially those focussing on hunting-gathering and pastoralist communities and who appreciate indigenous knowledge.--
Download or read book The Evolution of the Primate Foot written by Angel Zeininger and published by Springer Nature. This book was released on 2022-12-07 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human foot is a unique and defining characteristic of our anatomy. Most primates have grasping, prehensile feet, whereas the human foot stands out as a powerful non-grasping propulsive lever that is central to our evolution as adept bipedal walkers and runners and defines our lineage. Very few books have compiled and evaluated key research on the primate foot and provided a perspective on what we know and what we still need to know. This book serves as an essential companion to “The Evolution of the Primate Hand” volume, also in the Developments in Primatology series. This book includes chapters written by experts in the field of morphology and mechanics of the primate foot, the role of the foot in different aspects of primate locomotion (including but not limited to human bipedalism), the “hard evidence” of primate foot evolution including fossil foot bones and fossil footprints, and the relevance of our foot’s evolutionary history to modern human foot pathology. This volume addresses three fundamental questions: (1) What makes the human foot so different from that of other primates? (2) How does the anatomy, biomechanics, and ecological context of the foot and foot use differ among primates and why? (3) how did foot anatomy and function change throughout primate and human evolution, and why is this evolutionary history relevant in clinical contexts today? This co-edited volume, which relies on the insights of leading scholars in primate foot anatomy and evolution provides for the first time a comprehensive review and scholarly discussion of the primate foot from multiple perspectives. It is accessible to readers at different levels of inquiry (e.g., undergraduate/graduate students, postdoctoral research, other scholars outside of biological anthropology). This volume provides an all-in‐one resource for research on the comparative and functional morphology and evolution of the primate foot.
Download or read book Posture Locomotion and Paleoecology of Pterosaurs written by Sankar Chatterjee and published by Geological Society of America. This book was released on 2004 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Robotics Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2013-10-31 with total page 1801 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book explores some of the most recent developments in robotic motion, artificial intelligence, and human-machine interaction, providing insight into a wide variety of applications and functional areas"--Provided by publisher.