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Books > Computing & IT > Computer communications & networking
Written by international experts in the field, this book covers the standards, architecture and deployment issues related to IP-based emergency services This book brings together contributions from experts on technical and operational aspects within the international standardisation and regulatory processes relating to routing and handling of IP-based emergency calls. Readers will learn how these standards work, how various standardization organizations contributed to them and about pilot projects, early deployment and current regulatory situation. Key Features: * Provides an overview of how the standards related to IP-based emergency services work, and how various organizations contributed to them * Focuses on SIP and IMS-based communication systems for the Internet * Covers standards, architecture and deployment issues * International focus, with coverage of the major national efforts in this area * Written by the experts who were/are involved in the development of the standards (NENA, EENA, 3GPP, IETF, ETSI, etc.) * Accompanying website provides updates on standards and deployment (http://ip-emergency.net) This book is an excellent resource for vendors building software and equipment for emergency services, engineers/researchers engaged in development of networks and network elements and standardization, emergency services providers, standardization experts, product persons, those within the regulatory environment. Students and lecturers, infrastructure and application service providers will also find this book of interest.
Third generation networks have been specified and are now being deployed in a few countries. They are expected to reach maturity in the next several years and to provide various services including audio, video, and world wide web browsing. Furthermore, radio terminals are expected to be integrated in a number of devices such as personal computers, personal digital assistants, and even television sets. Such a wide-usage of radio mandates ongoing research to address design of networks with high capacity while providing acceptable quality of service. Included in Multiaccess, Mobility and Teletraffic for Wireless Communications: Volume 6 are new results on the optimization of protocols in third generation systems. The radio channel is dynamically shared among several users using packet access, it must adapt to a varying number of users and accomodate various services. Several chapters deal with radio resource management and packet access both in second and third generation systems. The book also considers the performance of low layer protocols (MAC/RLC) and transport protocols (e.g., TCP) when they are combined to offer data services. IPv6 will probably be an in-use network protocol in the near future. It must efficiently manage mobility and support multimedia flows. Wireless internet is an important area and related topics are included in this book. The improvement of the network performance relies on a sophisticated and optimized physical layer. The book includes studies on joint multiple access detection, MIMO systems, use of turbo-codes and methods to improve the analysis of the channel capacity. The book also covers location management, handoff optimization, multi-hop networks andnetwork management. Mobility and Teletraffic for Wireless Communications: Volume 6 is an important book for researchers, students and professionals working in the area of wireless communications and mobile computing.
Cross-Media Service Delivery is of interest to professionals and
academicians working in content authoring and electronic publishing
platforms; as well as in media and broadcasting.
Privacy requirements have an increasing impact on the realization of modern applications. Commercial and legal regulations demand that privacy guarantees be provided whenever sensitive information is stored, processed, or communicated to external parties. Current approaches encrypt sensitive data, thus reducing query execution efficiency and preventing selective information release. Preserving Privacy in Data Outsourcing presents a comprehensive approach for protecting highly sensitive information when it is stored on systems that are not under the data owner's control. The approach illustrated combines access control and encryption, enforcing access control via structured encryption. This solution, coupled with efficient algorithms for key derivation and distribution, provides efficient and secure authorization management on outsourced data, allowing the data owner to outsource not only the data but the security policy itself. To reduce the amount of data to be encrypted the book also investigates data fragmentation as a possible way to protect privacy of data associations and provide fragmentation as a complementary means for protecting privacy: associations broken by fragmentation will be visible only to users authorized (by knowing the proper key) to join fragments. The book finally investigates the problem of executing queries over possible data distributed at different servers and which must be controlled to ensure sensitive information and sensitive associations be visible only to parties authorized for that. Case Studies are provided throughout the book. Privacy, data mining, data protection, data outsourcing, electronic commerce, machine learning professionals and others working in these related fields will find this book a valuable asset, as well as primary associations such as ACM, IEEE and Management Science. This book is also suitable for advanced level students and researchers concentrating on computer science as a secondary text or reference book.
The companies that provide the Internet to the rest of the world do
not have the luxury of setting high expectations and assuming they
will be met. These Internet infrastructure companies (IICs) are
responsible for delivering the Internet's promise, including
everything from eBusiness and mobile Internet applications to
optical services and high-speed access. The Internet's audience
takes this promise for granted, and IICs face the daunting
challenge of making the Internet, and networks like it, do what the
audience expects them to. To meet the expectations they face, IICs
must harness the power of their operations support systems (OSSs) -
the software systems in the background they use to create, manage,
maintain, manipulate and adapt their networks to serve customers
reliably and rapidly.
This guide provides a comprehensive overview of High Performance Computing (HPC) to equip students with a full skill set including cluster setup, network selection, and a background of supercomputing competitions. It covers the system, architecture, evaluating approaches, and other practical supercomputing techniques. As the world's largest supercomputing hackathon, the ASC Student Supercomputer Challenge has attracted a growing number of new talent to supercomputing and has greatly promoted communications in the global HPC community. Enclosed in this book, readers will also find how to analyze and optimize supercomputing systems and applications in real science and engineering cases.
As the IoT market is booming, several issues are delaying the full realization of the technology. IoT devices, in cybersecurity terms, greatly increase security risk. This means that any scientific work that offers cybersecurity strategies will excite security experts who will be glad to expand their knowledge base on IoT cybersecurity. As a result of the booming of the IoT market, business competitors are jockeying for a piece of the market. This means that solutions from researchers that address compatibility issues will be greatly welcomed by IoT technology developers. Connectivity providers are likely to embrace solutions to challenges of bandwidth since a growing IoT market must be followed up by bandwidth-intensive IoT applications which tend to jostle for space on the current client-server model. Overpromising followed by underdelivering, has been the current approach by many innovators and the mismatch results in losses in production, orphaned technologies accompanied by frequent system failures. Solutions that address IoT performance issues are likely to excite many start-ups. Solutions to challenges of fragmentation presented by thousands of devices from different manufacturers operating on proprietary ecosystems are likely to be warmly embraced by many IoT brands developers. As such, a publication that specifically addresses the challenges faced in the rolling out of IoT technologies is sorely needed.
This book contains the refereed proceedings of the Fourth Annual Mediterranean Ad Hoc Networking Workshop, Med-Hoc-Net 2005. Med-Hoc-Net 2005 consolidated the success of the previous editions of the workshop series. It aimed to serve as a platform for researchers from academia, research, laboratories, and industry from all over the world to share their ideas, views, reults, and experiences in the field of ad-hoc networking.
Naming is an integral building block within data networks and systems and is becoming ever more important as complex data-centric usage models emerge. Internet Naming and Discovery is timely in developing a unified model for studying the topic of naming and discovery. It details the architectural and economic tools needed for designing naming and discovery schemes within the broader context of internetwork architecture. Readers will find in this book a historic overview of the Internet and a comprehensive survey of the literature, followed by and an in-depth examination of naming and discovery. Specific topics covered include: * formal definitions of name, address, identifier, locator, binding, routing, discovery, mapping, and resolution; * a discussion of the properties of names and bindings, along with illustrative case studies; * taxonomy that helps in organizing the solution space, and more importantly in identifying new avenues for contributing to the field; * a general model for exploring the tradeoffs involved in designing discovery systems; * an illustrative design exercise for differentiated discovery services; * broad treatment of the main economic issues that arise in the context of discovery; and * a game-theoretic incentive model for route distribution (and discovery) in the context of path-vector routing protocols (mainly BGP). Internet Naming and Discovery will be of great value to readers, including graduate students, engineers and computer scientists, theoreticians and practitioners, seeking a training in advanced networking, or specializing in computer and communications networks.
Under Quality of Service (QoS) routing, paths for flows are selected based upon the knowledge of resource availability at network nodes and the QoS requirements of flows. QoS routing schemes proposed differ in the way they gather information about the network state and select paths based on this information. We broadly categorize these schemes into best-path routing and proportional routing. The best-path routing schemes gather global network state information and always select the best path for an incoming flow based on this global view. On the other hand, proportional routing schemes proportion incoming flows among a set of candidate paths. We have shown that it is possible to compute near-optimal proportions using only locally collected information. Furthermore, a few good candidate paths can be selected using infrequently exchanged global information and thus with minimal communication overhead. Localized Quality Of Service Routing For The Internet, describes these schemes in detail demonstrating that proportional routing schemes can achieve higher throughput with lower overhead than best-path routing schemes. It first addresses the issue of finding near-optimal proportions for a given set of candidate paths based on locally collected flow statistics. This book will also look into the selection of a few good candidate paths based on infrequently exchanged global information. The final phase of this book will describe extensions to proportional routing approach to provide hierarchical routing across multiple areas in a large network. Localized Quality Of Service Routing For The Internet is designed for researchers and practitioners in industry, and is suitable for graduatelevel students in computer science as a secondary text.
Piecewise Linear (PL) approximation of non-linear behaviour is a well-known technique in synthesis and analysis of electrical networks. However, the PL description should be efficient in data storage and the description should allow simple retrieval of the stored information. Furthermore, it would be useful if the model description could handle a large class of piecewise linear mappings. Piecewise Linear Modeling and Analysis explains in detail all possible model descriptions for efficiently storing piecewise linear functions, starting with the Chua descriptions. Detailed explanation on how the model parameter can be obtained for a given mapping is provided and demonstrated by examples. The models are ranked to compare them and to show which model can handle the largest class of PL mappings. All model descriptions are implicitly related to the Linear Complementarity Problem and most solution techniques for this problem, like Katzenelson and Lemke, are discussed according to examples that are explained in detail. To analyse PL electrical networks a simulator is mandatory. Piecewise Linear Modeling and Analysis provides a detailed outline of a possible PL simulator, including pseudo-programming code. Several simulation domains like transient, AC and distortion are discussed. The book explains the attractive features of PL simulators with respect to mixed-level and mixed-signal simulation while paying due regard also to hierarchical simulation. Piecewise Linear Modeling and Analysis shows in detail how many existing components in electrical networks can be modeled. These range from digital logic and analog basic elements such as transistors to complex systems like Phase-Locked Loops and detection systems. Simulation results are also provided. The book concludes with a discussion on how to find multiple solutions for PL functions or networks. Again, the most common techniques are outlined using clear examples. Piecewise Linear Modeling and Analysis is an indispensable guide for researchers and designers interested in network theory, network synthesis and network analysis.
The ongoing migration of computing and information access from stationary environments to mobile computing devices for eventual use in mobile environments, such as Personal Digital Assistants (PDAs), tablet PCs, next generation mobile phones, and in-car driver assistance systems, poses critical challenges for natural human-computer interaction. Spoken dialogue is a key factor in ensuring natural and user-friendly interaction with such devices which are meant not only for computer specialists, but also for everyday users. Speech supports hands-free and eyes-free operation, and becomes a key alternative interaction mode in mobile environments, e.g. in cars where driver distraction by manually operated devices may be a significant problem. On the other hand, the use of mobile devices in public places, may make the possibility of using alternative modalities possibly in combination with speech, such as graphics output and gesture input, preferable due to e.g. privacy issues. Researchers' interest is progressively turning to the integration of speech with other modalities such as gesture input and graphics output, partly to accommodate more efficient interaction and partly to accommodate different user preferences. This book: Audience: Computer scientists, engineers, and others who work in
the area of spoken multimodal dialogue systems in academia and in
the industry;
A comprehensive survey of computer network security concepts, methods, and practices. This authoritative volume provides an optimal description of the principles and applications of computer network security in particular, and cyberspace security in general. The book is thematically divided into three segments: Part I describes the operation and security conditions surrounding computer networks; Part II builds from there and exposes readers to the prevailing security situation based on a constant security threat; and Part III - the core - presents readers with most of the best practices and solutions currently in use. It is intended as both a teaching tool and reference. This broad-ranging text/reference comprehensively surveys computer network security concepts, methods, and practices and covers network security tools, policies, and administrative goals in an integrated manner. It is an essential security resource for undergraduate or graduate study, practitioners in networks, and professionals who develop and maintain secure computer network systems.
While women benefit from using new digital and Internet technologies for self-expression, networking, and professional activities, cyber victimization remains an underexplored barrier to their participation. Women often outnumber men in surveys on cyber victimization. Cyber Crime and the Victimization of Women: Laws, Rights and Regulations is a unique and important contribution to the literature on cyber crime. It explores gendered dimensions of cyber crimes like adult bullying, cyber stalking, hacking, defamation, morphed pornographic images, and electronic blackmailing. These and other tactics designed to inflict intimidation, control, and other harms are frequently committed by perpetrators who, for many reasons, are unlikely to be identified or punished. Scholars, researchers, law makers, and ordinary women and their supporters will gain a better understanding of cyber victimization and discover how to improve responses to cyber crimes against women.
The main links with your PC and the outside world are the centronic
port, used for connecting the printer, the RS232 port, used for the
mouse, and the games port for a joystick. This book explores how
these input/output (I/O) ports can be put to use through a range of
other interfacing applications. This is especially useful for
laptop and palmtop PCs which cannot be fitted with internal I/O
cards. A novel approach is taken by this book, combining the
hardware through which the ports can be explored, and the software
programming needed to carry out a range of experiments.
In this book the authors first describe the background of trusted platforms and trusted computing and speculate about the future. They then describe the technical features and architectures of trusted platforms from several different perspectives, finally explaining second-generation TPMs, including a technical description intended to supplement the Trusted Computing Group's TPM2 specifications. The intended audience is IT managers and engineers and graduate students in information security.
The evolution of modern computers began more than 50 years ago and has been driven to a large extend by rapid advances in electronic technology during that period. The first computers ran one application (user) at a time. Without the benefit of operating systems or compilers, the application programmers were responsible for managing all aspects of the hardware. The introduction of compilers allowed programmers to express algorithms in abstract terms without being concerned with the bit level details of their implementation. Time sharing operating systems took computing systems one step further and allowed several users and/or applications to time share the computing services of com puters. With the advances of networks and software tools, users and applications were able to time share the logical and physical services that are geographically dispersed across one or more networks. Virtual Computing (VC) concept aims at providing ubiquitous open computing services in analogous way to the services offered by Telephone and Elec trical (utility) companies. The VC environment should be dynamically setup to meet the requirements of a single user and/or application. The design and development of a dynamically programmable virtual comput ing environments is a challenging research problem. However, the recent advances in processing and network technology and software tools have successfully solved many of the obstacles facing the wide deployment of virtual computing environments as will be outlined next."
These proceedings contain the papers of IFIP/SEC 2010. It was a special honour and privilege to chair the Program Committee and prepare the proceedings for this conf- ence, which is the 25th in a series of well-established international conferences on security and privacy organized annually by Technical Committee 11 (TC-11) of IFIP. Moreover, in 2010 it is part of the IFIP World Computer Congress 2010 celebrating both the Golden Jubilee of IFIP (founded in 1960) and the Silver Jubilee of the SEC conference in the exciting city of Brisbane, Australia, during September 20-23. The call for papers went out with the challenging motto of "Security & Privacy Silver Linings in the Cloud" building a bridge between the long standing issues of security and privacy and the most recent developments in information and commu- cation technology. It attracted 102 submissions. All of them were evaluated on the basis of their significance, novelty, and technical quality by at least five member of the Program Committee. The Program Committee meeting was held electronically over a period of a week. Of the papers submitted, 25 were selected for presentation at the conference; the acceptance rate was therefore as low as 24. 5% making SEC 2010 a highly competitive forum. One of those 25 submissions could unfortunately not be included in the proceedings, as none of its authors registered in time to present the paper at the conference.
Networks and Network Analysis for Defence and Security discusses relevant theoretical frameworks and applications of network analysis in support of the defence and security domains. This book details real world applications of network analysis to support defence and security. Shocks to regional, national and global systems stemming from natural hazards, acts of armed violence, terrorism and serious and organized crime have significant defence and security implications. Today, nations face an uncertain and complex security landscape in which threats impact/target the physical, social, economic and cyber domains. Threats to national security, such as that against critical infrastructures not only stem from man-made acts but also from natural hazards. Katrina (2005), Fukushima (2011) and Hurricane Sandy (2012) are examples highlighting the vulnerability of critical infrastructures to natural hazards and the crippling effect they have on the social and economic well-being of a community and a nation. With this dynamic and complex threat landscape, network analysis has emerged as a key enabler in supporting defence and security. With the advent of big data and increasing processing power, network analysis can reveal insights with regards to structural and dynamic properties thereby facilitating greater understanding of complex networks, their entities, interdependencies, vulnerabilities to produce insights for creative solutions. This book will be well positioned to inform defence, security and intelligence professionals and researchers with regards to leading methodologies and approaches."
This book covers performance analysis of computer networks, and begins by providing the necessary background in probability theory, random variables, and stochastic processes. Queuing theory and simulation are introduced as the major tools analysts have access to. It presents performance analysis on local, metropolitan, and wide area networks, as well as on wireless networks. It concludes with a brief introduction to self-similarity. Designed for a one-semester course for senior-year undergraduates and graduate engineering students, it may also serve as a fingertip reference for engineers developing communication networks, managers involved in systems planning, and researchers and instructors of computer communication networks. |
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