Computer Network Time Synchronization
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Computer Network Time Synchronization
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Author : David L. Mills
language : en
Publisher: CRC Press
Release Date : 2006-03-24
Computer Network Time Synchronization written by David L. Mills and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-03-24 with Computers categories.
What started with the sundial has, thus far, been refined to a level of precision based on atomic resonance: Time. Our obsession with time is evident in this continued scaling down to nanosecond resolution and beyond. But this obsession is not without warrant. Precision and time synchronization are critical in many applications, such as air traffic
Computer Network Time Synchronization
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Author : David L. Mills
language : en
Publisher: CRC Press
Release Date : 2006-03-24
Computer Network Time Synchronization written by David L. Mills and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-03-24 with Computers categories.
What started with the sundial has, thus far, been refined to a level of precision based on atomic resonance: Time. Our obsession with time is evident in this continued scaling down to nanosecond resolution and beyond. But this obsession is not without warrant. Precision and time synchronization are critical in many applications, such as air traffic control and stock trading, and pose complex and important challenges in modern information networks. Penned by David L. Mills, the original developer of the Network Time Protocol (NTP), Computer Network Time Synchronization: The Network Time Protocol takes a broad look at the architecture, protocols, and algorithms involved in time dissemination, distribution, and synchronization. Focused on the fourth generation of NTP, Mills' magnum opus gives an in-depth configuration and performance analysis of typical deployed NTP networks as well as a detailed error budget showing the influence of network and computer delay variations on accuracy. Mills demonstrates the algorithms used to select measurements accessed via diverse pathways to achieve the best accuracy, addresses security issues in depth, and describes the engineering principles underlying NTP architecture and timestamping exchange procedures. Opening the door to highly precise time synchronization in both public and private networks, Computer Network Time Synchronization offers in-depth analysis, theory, and practical concerns in a unified and authoritative reference.
Computer Network Time Synchronization
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Author : David L. Mills
language : en
Publisher: CRC Press
Release Date : 2017-12-19
Computer Network Time Synchronization written by David L. Mills and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-19 with Computers categories.
Carefully coordinated, reliable, and accurate time synchronization is vital to a wide spectrum of fields—from air and ground traffic control, to buying and selling goods and services, to TV network programming. Ill-gotten time could even lead to the unimaginable and cause DNS caches to expire, leaving the entire Internet to implode on the root servers. Written by the original developer of the Network Time Protocol (NTP), Computer Network Time Synchronization: The Network Time Protocol on Earth and in Space, Second Edition addresses the technological infrastructure of time dissemination, distribution, and synchronization—specifically the architecture, protocols, and algorithms of the NTP. This system has been active in one form or another for almost three decades on the Internet and numerous private networks on the nether side of firewalls. Just about everything today that can be connected to a network wire has support for NTP. This book: Describes the principal components of an NTP client and how it works with redundant servers and diverse network paths Provides an in-depth description of cryptographic and other critical algorithms Presents an overview of the engineering principles guiding network configuration Evaluating historic events that have taken place since computer network timekeeping started almost three decades ago, the author details a number of systems and drivers for current radio, satellites, and telephone modem dissemination and explains how we reckon the time, according to the stars and atoms. The original 16 chapters of the first edition have been rewritten, updated, and enhanced with new material. Four new chapters cover new algorithms and previously uncovered concepts, including timekeeping in space missions. Praise for the first edition: "... For those that need an exhaustive tome on all of the minutiae related to NTP and synchronization, this is the source. ... definitive ... this book should be considered the last word on the topic." —Ben Rothke on Slashdot.org "... the bible of the subject... contains enough information to take you just as far as you want to go....Dr. Mills is the original developer of NTP." —Books On-Line
Synchronization In Wireless Sensor Networks
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Author : Erchin Serpedin
language : en
Publisher: Cambridge University Press
Release Date : 2009-07-30
Synchronization In Wireless Sensor Networks written by Erchin Serpedin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-30 with Computers categories.
Presents the key clock synchronization protocols, emphasizing design and optimization techniques for building efficient estimation schemes and performance benchmarks.
Societal Impact Of Spaceflight
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Author : Steven J. Dick
language : en
Publisher: U. S. National Aeronautics & Space Administration
Release Date : 2007
Societal Impact Of Spaceflight written by Steven J. Dick and has been published by U. S. National Aeronautics & Space Administration this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Business & Economics categories.
Since the dawn of spaceflight, advocates of a robust space effort have argued that human activity beyond Earth makes a significant difference in everyday life. Assertions abound about the "impact" of spaceflight on society and its relationship to the larger contours of human existence. Fifty years after the Space Age began, it is time to examine the effects of spaceflight on society in a historically rigorous way. Has the Space Age indeed had a significant effect on society? If so, what are those influences? What do we mean by an "impact" on society? And what parts of society? Conversely, has society had any effect on spaceflight? What would be different had there been no Space Age? The purpose of this volume is to examine these and related questions through scholarly research, making use especially of the tools of the historian and the broader social sciences and humanities. Herein a stellar array of scholars does just that, and arrives at sometimes surprising conclusions.
Mobile Ad Hoc And Sensor Networks
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Author : Hongke Zhang
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-11-19
Mobile Ad Hoc And Sensor Networks written by Hongke Zhang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-19 with Business & Economics categories.
This book constitutes the refereed proceedings of the Third International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2007, held in Beijing, China, in December 2007. The papers address all current issues in mobile ad hoc and sensor networks and are organized in topical sections on routing, network protocols, energy efficiency, data processing, self-organization and synchronization, deployment and application, as well as security.
Telecommunications And Networking Ict 2004
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Author : José Neuman De Souza
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-07-20
Telecommunications And Networking Ict 2004 written by José Neuman De Souza and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-07-20 with Computers categories.
This book constitutes the refereed proceedings of the 11th International Conference on Telecommunications, ICT 2004, held in Fortaleza, Brazil in August 2004. The 188 revised full papers presented were carefully reviewed and selected from 430 submissions. The papers are organized in topical sections on multimedia services, antennas, transmission technologies and wireless networks, communication theory, telecommunication pricing and billing, network performance and telecommunication services, active network and mobile agents, optical photonic techniques, optical networks, ad-hoc networks, signal processing, network performance and MPLS, traffic engineering, SIP, Qos and switches, network operation management, mobility and broadband wireless, cellular system evolution, personal communication, satellites, mobility management, network reliability, ATM and Web services, security, switching and routing, next generation systems, wireless access, Internet, etc.
Mediasync
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Author : Mario Montagud
language : en
Publisher: Springer
Release Date : 2018-03-26
Mediasync written by Mario Montagud and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-26 with Computers categories.
This book provides an approachable overview of the most recent advances in the fascinating field of media synchronization (mediasync), gathering contributions from the most representative and influential experts. Understanding the challenges of this field in the current multi-sensory, multi-device, and multi-protocol world is not an easy task. The book revisits the foundations of mediasync, including theoretical frameworks and models, highlights ongoing research efforts, like hybrid broadband broadcast (HBB) delivery and users’ perception modeling (i.e., Quality of Experience or QoE), and paves the way for the future (e.g., towards the deployment of multi-sensory and ultra-realistic experiences). Although many advances around mediasync have been devised and deployed, this area of research is getting renewed attention to overcome remaining challenges in the next-generation (heterogeneous and ubiquitous) media ecosystem. Given the significant advances in this research area, its current relevance and the multiple disciplines it involves, the availability of a reference book on mediasync becomes necessary. This book fills the gap in this context. In particular, it addresses key aspects and reviews the most relevant contributions within the mediasync research space, from different perspectives. Mediasync: Handbook on Multimedia Synchronization is the perfect companion for scholars and practitioners that want to acquire strong knowledge about this research area, and also approach the challenges behind ensuring the best mediated experiences, by providing the adequate synchronization between the media elements that constitute these experiences.
On The Importance Of Time Synchronization For Context Aware Applications
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Author : Bernd Niklas Klein
language : en
Publisher: kassel university press GmbH
Release Date : 2011
On The Importance Of Time Synchronization For Context Aware Applications written by Bernd Niklas Klein and has been published by kassel university press GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Synchronization categories.
Wireless Sensor Networks And Applications
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Author : Yingshu Li
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-10
Wireless Sensor Networks And Applications written by Yingshu Li and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-10 with Computers categories.
Wireless sensor networks are being employed in a variety applications ra- ing from medical to military, and from home to industry. The principle aim of this book is to provide a reference tool for the increasing number of scientists who depend upon sensor networks in some way. The book is organized into several sections, each including chapters exploring a speci?c topic. Wireless sensor networks are attracting great attention and there are many research topics yet to be studied. In this book, the topics covered include n- work design and modelling, network management, data management, security and applications. The articles presented in the book are expository, but of a scholarly nature, including the appropriate history background, a review of the state-of-the-art thinking relative to the topic, as well as a discussion of unsolved problems that are of special interest. The target readers of this book include the researchers in computer s- ence, computer engineering, and applied mathematics, as well as students in these subjects. Specialists as well as general readers will ?nd the articles st- ulating and helpful. Book Organization The book is organized into ?ve sections. Section I introduces the design and modelling of sensor networks. Chapter 1, by Iyer, Kulkarni, Mhatre, and Rosenberg, presents a taxonomy of wireless sensor networks, based on their application level objectives, tra–c characteristics and data delivery requi- ments. Popa and Lewis in Chapter 2 describe some algorithms for systematic exploration of unknown environments using a mobile wireless sensor network.