Download or read book Disconnected Operation in a Distributed File System written by James J. Kistler and published by Springer Science & Business Media. This book was released on 1995-12-13 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the author's PhD thesis which was selected during the 1993 ACM Doctoral Dissertation Competition as one of the three best submissions. The focus of this work is on the issue of availability in distributed file systems. It presents the important new technique called disconnected operation, in which clients mask failures and voluntary network detachments by emulating the functionality of servers where actual server-oriented solutions are inadequate. This permits client operation even under complete isolation from the server; the clean integration of mobile computers into the system is an important side-effect of the new technique. The design and implementation of disconnected file service in a working system, the Coda file system, is described in detail.
Download or read book Disconnected Operation in a Distributed File System written by James Jay Kistler and published by . This book was released on 1995 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of a High Performance High Availability Distributed File System written by Chetan Ahuja and published by . This book was released on 2001 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mobile Computing written by Tomasz Imielinski and published by Springer. This book was released on 2007-08-26 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid development of wireless digital communication technology has cre ated capabilities that software systems are only beginning to exploit. The falling cost of both communication and of mobile computing devices (laptop computers, hand-held computers, etc. ) is making wireless computing affordable not only to business users but also to consumers. Mobile computing is not a "scaled-down" version of the established and we- studied field of distributed computing. The nature of wireless communication media and the mobility of computers combine to create fundamentally new problems in networking, operating systems, and information systems. Further more, many of the applications envisioned for mobile computing place novel demands on software systems. Although mobile computing is still in its infancy, some basic concepts have been identified and several seminal experimental systems developed. This book includes a set of contributed papers that describe these concepts and sys tems. Other papers describe applications that are currently being deployed and tested. The first chapter offers an introduction to the field of mobile computing, a survey of technical issues, and a summary of the papers that comprise sub sequent chapters. We have chosen to reprint several key papers that appeared previously in conference proceedings. Many of the papers in this book are be ing published here for the first time. Of these new papers, some are expanded versions of papers first presented at the NSF-sponsored Mobidata Workshop on Mobile and Wireless Information Systems, held at Rutgers University on Oct 31 and Nov 1, 1994.
Download or read book DISTRIBUTED OPERATING SYSTEMS written by PRADEEP K. SINHA and published by PHI Learning Pvt. Ltd.. This book was released on 1998-01-01 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: The highly praised book in communications networking from IEEE Press, now available in the Eastern Economy Edition.This is a non-mathematical introduction to Distributed Operating Systems explaining the fundamental concepts and design principles of this emerging technology. As a textbook for students and as a self-study text for systems managers and software engineers, this book provides a concise and an informal introduction to the subject.
Download or read book Exploiting Weak Connectivity in a Distributed File System written by Carnegie Mellon University. Computer Science Department and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Weak connectivity, in the form of intermittent, low- bandwidth, or expensive networks is a fact of life in mobile computing. For the foreseeable future, access to cheap, high-performance, reliable networks, or strong connectivity will be limited to a few oases, such as work or home, in a vast desert of weak connectivity. The design of distributed file systems has traditionally been based on an assumption of strong connectivity. Yet, to provide ubiquitous data access, it is vital that distributed file systems make effective use of weak connectivity. This dissertation describes the design, implementation, and evaluation of weakly connected operation in the Coda File System. The starting point of this work is disconnected operation, in which a file system client operates using data in its cache during server or network failures. Disconnected clients suffer from many limitations: updates are not visible to other clients, cache misses may impede progress, updates are at risk from client loss or damage, and the danger of update conflicts increases as disconnections are prolonged. Weak connectivity provides an opportunity to alleviate these limitations. Coda's strategy for weakly connected operation is best characterized as application-transparent adaptation. The system bears full responsibility for coping with the demands of weak connectivity. This approach preserves upward compatibility by allowing applications to run unchanged. Coda provides several mechanisms for weakly connected operation motivated by actual experience. The foundation of adaptivity in this system is the communications layer, which derives and supplies information on network conditions to higher system layers. The rapid cache validation mechanism enables the system to recover quickly in intermittent environments. The trickle reintegration mechanism insulates the user from poor network performance by propagating updates to servers asynchronously. The cache miss handling mechanism alerts the user to potentially lengthy service times and provides opportunities for intervention. A quantitative evaluation of these mechanisms, based on controlled experimentation and empirical data gathered from the deployed system in everyday use, shows that Coda is able to provide good performance even when network bandwidth varies over four orders of magnitude -- from modem speeds to Lan speeds."
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mobile Data Management written by Kian-Lee Tan and published by Springer. This book was released on 2003-06-29 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Second International Conference on Mobile Data Management (MDM2001). The conference serves as a forum for the exchange of technical ideas and research results in the areas of mobility and database management. This year, we have a very exciting program for MDM2001. Many quality papers were submitted to the conference. All of the submitted papers were - viewed by at least three PC members. Due to the limitations of the program schedule as well as the desire to organize the conference using a single track format, we selected only 18 papers for full presentation at the conference. As a result many excellent papers could not be accepted. The papers chosen for presentation span a large range of topics, from n- work protocol issues up to the semantics of mobile applications. The common theme of all these papers is their recognition of the central role played by data managementtechniques in the developmentof the emerging worldof mobile and wireless applications. We have loosely organized these papers into six areas: 1. DATA MANAGEMENT ARCHITECTURES, 2. CONTENT DELIVERY, 3. DATA BROADCASTING, 4. CACHING AND HOARDING, 5. COPING WITH MOVEMENT, 6. NETWORKS AND SYSTEMS ISSUES In addition to the researchtrack, we havesought to broaden the scope of the conference with an industrial session as well as poster presentations. Overall, the program strikes a comfortable balance between applied and theoretically oriented papers.
Download or read book Network and Operating Systems Support for Digital Audio and Video written by Thomas D.C. Little and published by Springer Science & Business Media. This book was released on 1995-11-30 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prevailing orthodoxy according to which all macroeconomic theory should be reducible to microeconomics is criticized. Such a dogma excludes from economics the creation of new knowledge, which - as distinguished from the mere transmission of knowledge in education and training - is a social process not reducible to microeconomics. A mathematical extension of the Lucas theory to allow for the effects of creation of knowledge upon economic development is shown to improve essentially the prediction of business cycle data, when compared with the conventional real business cycle models of Kydland and Prescott, Hansen and Rogerson, and Danthine and Donaldson.
Download or read book On the Move to Meaningful Internet Systems 2007 OTM 2007 Workshops written by Zahir Tari and published by Springer. This book was released on 2007-11-22 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set LNCS 4805/4806 constitutes the refereed proceedings of 10 international workshops and papers of the OTM Academy Doctoral Consortium held as part of OTM 2007 in Vilamoura, Portugal, in November 2007. The 126 revised full papers presented were carefully reviewed and selected from a total of 241 submissions to the workshops. The first volume begins with 23 additional revised short or poster papers of the OTM 2007 main conferences.
Download or read book Handheld and Ubiquitous Computing written by Peter Thomas and published by Springer. This book was released on 2003-07-31 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers collected here are those selected for presentation at the Second International Symposium on Handheld and Ubiquitous Computing 2000 (HUC 2000) held in Bristol, UK in September 2000. The symposium was the second in a series of symposia which explores new research in the area of emerging mobile, personal, and handheld technologies. The first event, HUC’99, was held in Karlsruhe (Germany), organised by the Telecooperation Office (TecO) of the University of Karlsruhe in close collaboration with the Center for Arts and Media Technology (ZKM). This previous event, the first of its kind in the world, attracted a large number of paper submissions, was attended by over 200 international delegates, and demonstrated the growing international interest in the area with contributions from the United States, Japan and Europe. The 18 papers collected here were chosen from 70 submissions to HUC 2000, and represent a valuable resource for those wishing to understand the themes being pursued in this vibrant and exciting area of technology. The papers range from work on intelligent environment and devices, user experience, and interface design, to research in context aware systems, wearable computing, and location-based services. Together, the papers represent a snapshot of the state of the art in research in handheld and ubiquitous computing. The symposium also attracted a large number of short paper submissions, and these are available in the Springer journal Personal Technologies volume 4, number 4, which was published in tandem with these proceedings.
Download or read book Computer Science Handbook written by Allen B. Tucker and published by CRC Press. This book was released on 2004-06-28 with total page 2742 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you think about how far and fast computer science has progressed in recent years, it's not hard to conclude that a seven-year old handbook may fall a little short of the kind of reference today's computer scientists, software engineers, and IT professionals need. With a broadened scope, more emphasis on applied computing, and more than 70 chap
Download or read book Advances in Computers written by and published by Academic Press. This book was released on 1997-07-04 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its first volume in 1960, Advances in Computers has presented detailed coverage of innovations in hardware and software and in computer theory, design, and applications. It has also provided contributorswith a medium in which they can examine their subjects in greater depth and breadth than that allowed by standard journal articles. As a result, many articles have become standard references that continue to be of significant, lasting value despite the rapid growth taking place in the field.
Download or read book Resolving Network Congestion in Mobile Computing Using Coda File System written by Temidayo Oluwafunke Ogunniyi and published by . This book was released on 2009 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: With this research, we focus on utilizing a distributed file system to combat congestion problems in wireless networks. The Coda file system is our choice of a distributed file system, as it offers several services, such as data pre-fetching, hoarding of files, disconnected operation and data consistency.
Download or read book Innovative Internet Computing Systems written by Herwig Unger and published by Springer Science & Business Media. This book was released on 2002-06-05 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the second international workshop on Innovative Internet Computing Systems, IICS 2002, held in Kühlungsborn, Germany, in June 2002. The 19 revised full papers presented together with an invited paper were carefully reviewed and selected from over 30 submissions. Among the topics addressed are large-scale distributed computing infrastructures presenting new challenges to information and Web technology, the management and retrieval of web-based information, content classification, web-based communities management, structure and retrieval of information from large distributed data bases, and the representation of the distributed nature of information by means of graph-theoretical models.
Download or read book A Modular and Extensible Network Storage Architecture written by Sai Lai Lo and published by Cambridge University Press. This book was released on 1995-08-17 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was originally published in 1995. At the time of publication, distributed file systems were monolithic and only supported single file abstractions. Network storage devices needed to be able to accommodate emerging information media such as digital audio and video, with data radically different in characteristics to traditional text and binary that file systems were optimised for. By combining emerging and traditional media, information could be recorded and presented in the most suitable way, and the value of a piece of information could be further enhanced by linking together related pieces. However composite data and cross-reference between data items raised a number of system issues that had not been addressed properly before. In this book Dr Lo defined a multi-service storage architecture that could meet the needs of existing and emerging applications and support multiple file abstractions. He also explored a number of related design issues.
Download or read book Fifth NASA Goddard Conference on Mass Storage Systems and Technologies written by Benjamin Kobler and published by . This book was released on 1996 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
