Download or read book Communication Mechanisms for Message Delivery in Heterogeneous Networks Prone to Episodic Connectivity written by Rao Naveed Bin Rais and published by . This book was released on 2011 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the networks are becoming increasingly heterogeneous, it is expected that future internetworks will interconnect different types of network including infrastructure-based and ad-hoc wireless networks including MANETs. Additionally, a number of emerging applications such as environmental monitoring, emergency response, require that future internetworks be tolerant to connectivity disruptions. Interconnecting these heterogeneous networks poses several challenges including seamless message delivery and identification of mobile nodes. The contributions of this thesis are three fold. First, we present a classification of existing DTN routing protocols by breaking up existing routing strategies into tuneable routing modules. Then, we identify some design guidelines to show how and when a given routing module should be used. Second, we propose a new framework called MeDeHa to provide message delivery across heterogeneous networks prone intermittent connectivity. MeDeHa is able to seamlessly bridge infrastructure-based and ad-hoc networks, through devices carrying multiple interfaces and by the integration of existing protocols. We evaluate MeDeHa through extensive simulations using realistic synthetic and real mobility traces, and by performing hybrid experiments which run partly on simulator and partly on real machines. Third, we propose a naming mechanism called HeNNA for heterogeneous networks prone to connectivity disruptions, which provides message delivery to nodes irrespective of their IP addresses. HeNNA is compatible with the status-quo Internet routing. We also implement HeNNA within MeDeHa to showcase the operation of complete message delivery protocol suite.
Download or read book Hybrid Routing in Delay Tolerant Networks written by Christoph P. Mayer and published by KIT Scientific Publishing. This book was released on 2014-07-30 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work addresses the integration of today's infrastructure-based networks with infrastructure-less networks. The resulting Hybrid Routing System allows for communication over both network types and can help to overcome cost, communication, and overload problems. Mobility aspect resulting from infrastructure-less networks are analyzed and analytical models developed. For development and deployment of the Hybrid Routing System an overlay-based framework is presented.
Download or read book Message Delivery for Intermittently Connected Heterogeneous Networks written by Rao Naveed Bin Rais and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the networks are becoming increasingly heterogeneous, it is expected that future internetworks will interconnect different types of network including infrastructure-based and ad-hoc wireless networks. Moreover, a number of emerging applications such as environmental monitoring, emergency response, etc., require that future internetworks be tolerant to connectivity disruptions. Interconnecting these heterogeneous networks poses several challenges including seamless message delivery and identification of mobile nodes. This book present 3 major contributions: 1) A classification of existing DTN routing protocols by breaking up existing routing strategies into tunable routing modules. 2) A new message delivery framework called MeDeHa to provide message delivery across heterogeneous networks prone to intermittent connectivity. MeDeHa is able to seamlessly bridge infrastructure-based and ad-hoc networks, through devices carrying multiple interfaces and by the integration of existing protocols. 3) A naming mechanism called HeNNA for heterogeneous networks prone to connectivity disruptions, which provides message delivery to nodes irrespective of their IP addresses.
Download or read book Wired Wireless Internet Communications written by Xavier Masip-Bruin and published by Springer. This book was released on 2011-06-27 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 9th IFIP TC 6 International Conference on Wired/Wireless Internet Communications, WWIC 2011, held in Vilanova i la Geltrú, Spain, in June 2011. The 26 contributions included were carefully reviewed and selected from 50 submissions. In addition the book contains 15 invited papers. The contributions are structured in topical sections on mobility and LTE networks; performance and simulation analysis; adaptive approaches to guarantee E2E network services; energy efficiency and cooperation in wireless networks; transmission and management; quality through routing, naming and control; wireless multi-hop communications challenges in the future internet; and emerging contributions.
Download or read book Proceedings written by and published by . This book was released on 2008 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delay Tolerant Networks written by Athanasios V. Vasilakos and published by CRC Press. This book was released on 2016-04-19 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: A class of Delay Tolerant Networks (DTN), which may violate one or more of the assumptions regarding the overall performance characteristics of the underlying links in order to achieve smooth operation, is rapidly growing in importance but may not be well served by the current end-to-end TCP/IP model. Delay Tolerant Networks: Protocols and Applicat
Download or read book Machine Learning for Future Wireless Communications written by Fa-Long Luo and published by John Wiley & Sons. This book was released on 2020-02-10 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review to the theory, application and research of machine learning for future wireless communications In one single volume, Machine Learning for Future Wireless Communications provides a comprehensive and highly accessible treatment to the theory, applications and current research developments to the technology aspects related to machine learning for wireless communications and networks. The technology development of machine learning for wireless communications has grown explosively and is one of the biggest trends in related academic, research and industry communities. Deep neural networks-based machine learning technology is a promising tool to attack the big challenge in wireless communications and networks imposed by the increasing demands in terms of capacity, coverage, latency, efficiency flexibility, compatibility, quality of experience and silicon convergence. The author – a noted expert on the topic – covers a wide range of topics including system architecture and optimization, physical-layer and cross-layer processing, air interface and protocol design, beamforming and antenna configuration, network coding and slicing, cell acquisition and handover, scheduling and rate adaption, radio access control, smart proactive caching and adaptive resource allocations. Uniquely organized into three categories: Spectrum Intelligence, Transmission Intelligence and Network Intelligence, this important resource: Offers a comprehensive review of the theory, applications and current developments of machine learning for wireless communications and networks Covers a range of topics from architecture and optimization to adaptive resource allocations Reviews state-of-the-art machine learning based solutions for network coverage Includes an overview of the applications of machine learning algorithms in future wireless networks Explores flexible backhaul and front-haul, cross-layer optimization and coding, full-duplex radio, digital front-end (DFE) and radio-frequency (RF) processing Written for professional engineers, researchers, scientists, manufacturers, network operators, software developers and graduate students, Machine Learning for Future Wireless Communications presents in 21 chapters a comprehensive review of the topic authored by an expert in the field.
Download or read book Communicating Science written by Toss Gascoigne and published by ANU Press. This book was released on 2020-09-14 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern science communication has emerged in the twentieth century as a field of study, a body of practice and a profession—and it is a practice with deep historical roots. We have seen the birth of interactive science centres, the first university actions in teaching and conducting research, and a sharp growth in employment of science communicators. This collection charts the emergence of modern science communication across the world. This is the first volume to map investment around the globe in science centres, university courses and research, publications and conferences as well as tell the national stories of science communication. How did it all begin? How has development varied from one country to another? What motivated governments, institutions and people to see science communication as an answer to questions of the social place of science? Communicating Science describes the pathways followed by 39 different countries. All continents and many cultures are represented. For some countries, this is the first time that their science communication story has been told.
Download or read book It s Complicated written by Danah Boyd and published by Yale University Press. This book was released on 2014-02-25 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveys the online social habits of American teens and analyzes the role technology and social media plays in their lives, examining common misconceptions about such topics as identity, privacy, danger, and bullying.
Download or read book Steps to an Ecology of Mind written by Gregory Bateson and published by University of Chicago Press. This book was released on 2000 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gregory Bateson was a philosopher, anthropologist, photographer, naturalist, and poet, as well as the husband and collaborator of Margaret Mead. This classic anthology of his major work includes a new Foreword by his daughter, Mary Katherine Bateson. 5 line drawings.
Download or read book Theories of Communication Networks written by Peter R. Monge and published by Oxford University Press. This book was released on 2003-03-27 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: To date, most network research contains one or more of five major problems. First, it tends to be atheoretical, ignoring the various social theories that contain network implications. Second, it explores single levels of analysis rather than the multiple levels out of which most networks are comprised. Third, network analysis has employed very little the insights from contemporary complex systems analysis and computer simulations. Foruth, it typically uses descriptive rather than inferential statistics, thus robbing it of the ability to make claims about the larger universe of networks. Finally, almost all the research is static and cross-sectional rather than dynamic. Theories of Communication Networks presents solutions to all five problems. The authors develop a multitheoretical model that relates different social science theories with different network properties. This model is multilevel, providing a network decomposition that applies the various social theories to all network levels: individuals, dyads, triples, groups, and the entire network. The book then establishes a model from the perspective of complex adaptive systems and demonstrates how to use Blanche, an agent-based network computer simulation environment, to generate and test network theories and hypotheses. It presents recent developments in network statistical analysis, the p* family, which provides a basis for valid multilevel statistical inferences regarding networks. Finally, it shows how to relate communication networks to other networks, thus providing the basis in conjunction with computer simulations to study the emergence of dynamic organizational networks.
Download or read book Neurogenic Communication Disorders written by Linda E. Worrall and published by Thieme. This book was released on 2011-01-01 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to fully define and describe the functional approach to neurogenic communication and swallowing disorders. Featuring contributions from leading experts and researchers worldwide, this volume outlines diverse treatment and assessment strategies using the functional approach, also examining them from a consumer and payer perspective. These strategies are designed to improve the day-to-day life of patients, while providing third parties with the practical outcomes they seek. This outstanding book is ideal for SLPs and graduate students in speech-language pathology programs.
Download or read book Cognitive Rehabilitation written by McKay Moore Sohlberg and published by Guilford Publications. This book was released on 2017-02-13 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sohlberg and Mateer's landmark introductory text helped put cognitive rehabilitation on the map for a generation of clinicians, researchers, educators, and students. The second edition reflects advances in neuroscience and computer technology, coupled with changes in service delivery models. The authors describe a broad range of clinical interventions for assisting persons with acquired cognitive impairments--including deficits in attention, memory, executive functions, and communication--and for managing associated emotional and behavioral issues. For each approach, theoretical underpinnings are reviewed in depth and clinical protocols delineated. Difficult concepts are explained in a clear, straightforward fashion, with realistic case examples bringing the material to life. Also included are samples of relevant assessment instruments, rating scales, and patient handouts. Throughout, the volume emphasizes the need to work from a community perspective, providing a framework for forming collaborative partnerships with families and caregivers. It is an essential resource for professionals across a wide variety of rehabilitation specialties.
Download or read book Routing Flow and Capacity Design in Communication and Computer Networks written by Michal Pioro and published by Elsevier. This book was released on 2004-07-21 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: In network design, the gap between theory and practice is woefully broad. This book narrows it, comprehensively and critically examining current network design models and methods. You will learn where mathematical modeling and algorithmic optimization have been under-utilized. At the opposite extreme, you will learn where they tend to fail to contribute to the twin goals of network efficiency and cost-savings. Most of all, you will learn precisely how to tailor theoretical models to make them as useful as possible in practice.Throughout, the authors focus on the traffic demands encountered in the real world of network design. Their generic approach, however, allows problem formulations and solutions to be applied across the board to virtually any type of backbone communication or computer network. For beginners, this book is an excellent introduction. For seasoned professionals, it provides immediate solutions and a strong foundation for further advances in the use of mathematical modeling for network design. Written by leading researchers with a combined 40 years of industrial and academic network design experience. Considers the development of design models for different technologies, including TCP/IP, IDN, MPLS, ATM, SONET/SDH, and WDM. Discusses recent topics such as shortest path routing and fair bandwidth assignment in IP/MPLS networks. Addresses proper multi-layer modeling across network layers using different technologies—for example, IP over ATM over SONET, IP over WDM, and IDN over SONET. Covers restoration-oriented design methods that allow recovery from failures of large-capacity transport links and transit nodes. Presents, at the end of each chapter, exercises useful to both students and practitioners.
Download or read book The CA3 Region of the Hippocampus How is it What is it for How does it do it written by Enrico Cherubini and published by Frontiers Media SA. This book was released on 2015-08-19 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CA3 hippocampal region receives information from the entorhinal cortex either directly from the perforant path or indirectly from the dentate gyrus via the mossy fibers (MFs). According to their specific targets (principal/mossy cells or interneurons), MFs terminate with large boutons or small filopodial extensions, respectively. MF-CA3 synapses are characterized by a low probability of release and pronounced frequency-dependent facilitation. In addition MF terminals are endowed with mGluRs that regulate their own release. We will describe the intrinsic membrane properties of pyramidal cells, which can sometimes fire in bursts, together with the geometry of their dendritic arborization. The single layer of pyramidal cells is quite distinct from the six-layered neocortical arrangement. The resulting aligned dendrites provides the substrate for laminated excitatory inputs. They also underlie a precise, diversity of inhibitory control which we will also describe in detail. The CA3 region has an especially rich internal connectivity, with recurrent excitatory and inhibitory loops. In recent years both in vivo and in vitro studies have allowed to better understand functional properties of the CA3 auto-associative network and its role in information processing. This circuit is implicated in encoding spatial representations and episodic memories. It generates physiological population synchronies, including gamma, theta and sharp-waves that are presumed to associate firing in selected assemblies of cells in different behavioral conditions. The CA3 region is susceptible to neurodegeneration during aging and after stresses such as infection or injury. Loss of some CA3 neurones has striking effects on mossy fiber inputs and can facilitate the generation of pathologic synchrony within the CA3 micro-circuit. The aim of this special topic is to bring together experts on the cellular and molecular mechanisms regulating the wiring properties of the CA3 hippocampal microcircuit in both physiological and pathological conditions, synaptic plasticity, behavior and cognition.We will particularly emphasize the dual glutamatergic and GABAergic phenotype of MF-CA3 synapses at early developmental stages and the steps that regulate the integration of newly generated neurons into the adult dentate gyrus-CA3 circuit.
Download or read book News Framing Effects written by Sophie Lecheler and published by Routledge. This book was released on 2018-09-03 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: News Framing Effects is a guide to framing effects theory, one of the most prominent theories in media and communication science. Rooted in both psychology and sociology, framing effects theory describes the ability of news media to influence people’s attitudes and behaviors by subtle changes to how they report on an issue. The book gives expert commentary on this complex theoretical notion alongside practical instruction on how to apply it to research. The book’s structure mirrors the steps a scholar might take to design a framing study. The first chapter establishes a working definition of news framing effects theory. The following chapters focus on how to identify the independent variable (i.e., the "news frame") and the dependent variable (i.e., the "framing effect"). The book then considers the potential limits or enhancements of the proposed effects (i.e., the "moderators") and how framing effects might emerge (i.e., the "mediators"). Finally, it asks how strong these effects are likely to be. The final chapter considers news framing research in the light of a rapidly and fundamentally changing news and information market, in which technologies, platforms, and changing consumption patterns are forcing assumptions at the core of framing effects theory to be re-evaluated.
Download or read book Media and Glocal Change written by Thomas Hylland Eriksen and published by . This book was released on 2005 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt:
