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The Influence Of Borders On Increment Thresholds
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Book Synopsis The Influence of Borders on Increment Thresholds by : Davida Young Teller
Download or read book The Influence of Borders on Increment Thresholds written by Davida Young Teller and published by . This book was released on 1965 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous investigators have reported that increment thresholds are elevated in the regions of abrupt spatial changes of adapting field intensity, known as borders or edges. Such effects have often been attributed to lateral physiological interactions, particularly lateral inhibition, within the visual system. An attempt was made to determine empirically the actual cause or causes of the elevated thresholds on the high intensity side of a border. These elevated thresholds are tentatively attributed to the combined influence of two factors: involuntary eye movements, which produce frequent changes of retinal illuminance near the border; and transient elevations in the increment threshold which occur near the times of large, rapid changes in retinal illuminance. It is concluded that short-term lateral interactions have little if any influence on increment thresholds on the high intensity side of a border. The possibility remains, however, that such increment thresholds may be influenced by lateral interactions whose effects take an extended period of time to develop. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1967 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mobility and Migration Choices by : Martin van der Velde
Download or read book Mobility and Migration Choices written by Martin van der Velde and published by Routledge. This book was released on 2016-03-03 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crossing of national state borders is one of the most-discussed issues of contemporary times and it poses many challenges for individual and collective identities. This concerns both short-distance mobility as well as long-distance migration. Choosing to move - or not - across international borders is a complex decision, involving both cognitive and emotional processes. This book tests the approach that three crucial thresholds need to be crossed before mobility occurs; the individual’s mindset about migrating, the choice of destination and perception of crossing borders to that location and the specific routes and spatial trajectories available to get there. Thus both borders and trajectories can act as thresholds to spatial moves. The threshold approach, with its focus on processes affecting whether, when and where to move, aims to understand the decision-making process in all its dimensions, in the hope that this will lead to a better understanding of the ways migrants conceive, perceive and undertake their transnational journeys. This book examines the three constitutive parts discerned in the cross-border mobility decision-making process: people, borders and trajectories and their interrelationships. Illustrated by a global range of case studies, it demonstrates that the relation between the three is not fixed but flexible and that decision-making contains aspects of belonging, instability, security and volatility affecting their mobility or immobility.
Download or read book NASA SP. written by and published by . This book was released on 1962 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Medicine and Biology written by and published by . This book was released on 1975 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detecting threshold effects in price transmission by : Traore, Fousseini
Download or read book Detecting threshold effects in price transmission written by Traore, Fousseini and published by Intl Food Policy Res Inst. This book was released on 2021-10-29 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of price transmission plays a key role in understanding markets integration. This helps identify the nature of the relationship between geographically distant markets and cross-commodity price transmission, as well as the impact of liberalization policies and the identification of regions exposed to systemic shocks. This technical note contributes to the debate between symmetric and asymmetric price transmission and proposes to present the traditional and new approaches for detecting threshold effects in price transmission while focusing on their advantages and limitations. There is no one-size-fits-all method to detect threshold effects in price transmission. Experts need to select a combination of elements (context of study, the economy under consideration, data availability…) to justify the relevancy of their choice. Beyond the presentation of the methods for detecting thresholds in price transmission, we perform an application in the case of the rice market in Senegal. The results support the evidence of an asymmetric price transmission between world and domestic prices in the short-run and a symmetric transmission in the long-run.
Book Synopsis Caribbean Migration by : Elizabeth M. Thomas-Hope
Download or read book Caribbean Migration written by Elizabeth M. Thomas-Hope and published by . This book was released on 2002 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1992, this text considers out-migration from the Caribbean in an analytical manner. Its comparative approach, involving three islands (Jamaica, Barbados and St Vincent) and the range of micro-environments within those islands, is based on data from extensive surveys and in-depth interviews. Analysis of the migration process reflects the perspective of Caribbean potential migrants themselves.
Book Synopsis Digital Pictures by : Arun N. Netravali
Download or read book Digital Pictures written by Arun N. Netravali and published by Springer. This book was released on 2013-12-19 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spatial Interactions in the Visual System by : Robert Merrill Springer
Download or read book Spatial Interactions in the Visual System written by Robert Merrill Springer and published by . This book was released on 1974 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Latino Threat written by Leo Chavez and published by Stanford University Press. This book was released on 2013-04-17 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: News media and pundits too frequently perpetuate the notion that Latinos, particularly Mexicans, are an invading force bent on reconquering land once their own and destroying the American way of life. In this book, Leo R. Chavez contests this assumption's basic tenets, offering facts to counter the many fictions about the "Latino threat." With new discussion about anchor babies, the DREAM Act, and recent anti-immigrant legislation in Arizona and other states, this expanded second edition critically investigates the stories about recent immigrants to show how prejudices are used to malign an entire population—and to define what it means to be American.
Book Synopsis Central Processing of Visual Information A: Integrative Functions and Comparative Data by : H. Autrum
Download or read book Central Processing of Visual Information A: Integrative Functions and Comparative Data written by H. Autrum and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume covers the physiology of the visual system beyond the optic nerve. It is a continuation of the two preceding parts on the photochemistry and the physiology of the eye, and forms a bridge from them to the fourth part on visual psychophysics. These fields have all developed as independent speciali ties and need integrating with each other. The processing of visual information in the brain cannot be understood without some knowledge of the preceding mechanisms in the photoreceptor organs. There are two fundamental reasons, ontogenetic and functional, why this is so: 1) the retina of the vertebrate eye has developed from a specialized part of the brain; 2) in processing their data the eyes follow physiological principles similar to the visual brain centres. Peripheral and central functions should also be discussed in context with their final synthesis in subjective experience, i. e. visual perception. Microphysiology and ultramicroscopy have brought new insights into the neuronal basis of vision. These investigations began in the periphery: HARTLINE'S pioneering experiments on single visual elements of Limulus in 1932 started a successful period of neuronal recordings which ascended from the retina to the highest centres in the visual brain. In the last two decades modern electron microscopic techniques and photochemical investigations of single photoreceptors further contributed to vision research.
Download or read book Open Borders written by Bryan Caplan and published by First Second. This book was released on 2019-10-29 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Economist “Our Books of the Year” Selection Economist Bryan Caplan makes a bold case for unrestricted immigration in this fact-filled graphic nonfiction. American policy-makers have long been locked in a heated battle over whether, how many, and what kind of immigrants to allow to live and work in the country. Those in favor of welcoming more immigrants often cite humanitarian reasons, while those in favor of more restrictive laws argue the need to protect native citizens. But economist Bryan Caplan adds a new, compelling perspective to the immigration debate: He argues that opening all borders could eliminate absolute poverty worldwide and usher in a booming worldwide economy—greatly benefiting humanity. With a clear and conversational tone, exhaustive research, and vibrant illustrations by Zach Weinersmith, Open Borders makes the case for unrestricted immigration easy to follow and hard to deny.
Book Synopsis The Challenge of the Threshold by : Jocelyne Streiff-Fenart
Download or read book The Challenge of the Threshold written by Jocelyne Streiff-Fenart and published by Lexington Books. This book was released on 2012 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The containment policies aimed at regulating immigration flows towards Europe and emerging economies like South Africa have profoundly altered the dynamics of migration in Africa. Drawing on original empirical research, this volume explores the notion of threshold as an operative concept to envisage in turn: the discursive frameworks of containment policies, the challenges to local spaces and their equilibrium, and finally, the sense of liminality experienced by migrants caught in those situations.
Book Synopsis Coding and Data Hiding for Multimedia by : Bin Zhu
Download or read book Coding and Data Hiding for Multimedia written by Bin Zhu and published by . This book was released on 1999 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Let's Get Engaged! Crossing the Threshold of Marketing’s Engagement Era by : Michael W. Obal
Download or read book Let's Get Engaged! Crossing the Threshold of Marketing’s Engagement Era written by Michael W. Obal and published by Springer. This book was released on 2015-12-12 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: Founded in 1971, the Academy of Marketing Science is an international organization dedicated to promoting timely explorations of phenomena related to the science of marketing in theory, research, and practice. Among its services to members and the community at large, the Academy offers conferences, congresses and symposia that attract delegates from around the world. Presentations from these events are published in this Proceedings series, which offers a comprehensive archive of volumes reflecting the evolution of the field. Volumes deliver cutting-edge research and insights, complimenting the Academy’s flagship journals, the Journal of the Academy of Marketing Science (JAMS) and AMS Review. Volumes are edited by leading scholars and practitioners across a wide range of subject areas in marketing science. This volume includes the full proceedings from the 2014 Academy of Marketing Science (AMS) Annual Conference held in Indianapolis, Indiana, entitled Let’s Get Engaged! Crossing the Threshold of Marketing’s Engagement Era. The volume includes manuscripts relevant to marketing strategy, consumer behaviour, quantitative modelling, among others.
Book Synopsis On the Quanta Explanation of Vision by : Maarten Anne Bouman
Download or read book On the Quanta Explanation of Vision written by Maarten Anne Bouman and published by Springer. This book was released on 2013-11-09 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
