The Future of the Internet and How to Stop It Jonathan Zittrain. New Haven: Yale University Press, 2008. 342 pages. $30.00.Jonathan Zittrain's book, The Future of the Internet and How to Stop It, discusses the tension between generativity, the "capacity to produce unanticipated change through unfiltered contributions from a broad and varied audience" and the security problems inherent in today's personal computers and Internet system (70). This generativity, Zittrain argues, is the greatest strength of personal computers and the Internet and had led to great innovations, including creative software, peer-to-peer networking, blogs and content sites such as Wikipedia, and even the Internet itself. Yet this same generativity has also spawned security, legal, and social problems that may lead to the demise of personal computers and the Internet as they exist today (101). If we do not find solutions for these problems, Zittrain warns, we will be faced with government or corporate control of personal computers and the Internet, similar to current controls of cellular telephones and cable converter boxes, which will effectively shut down the innovations that personal computers and the Internet currently enable (245). Personal computers, according to Zittrain, will become nothing but appliances programmed by the manufacturer, capable only of limited tasks, and stripped of the tools and capabilities necessary for innovation.The first part of the book traces the history of personal computers, mainframes, proprietary servers, and the Internet. This section highlights how differences in technology and administration fostered generativity in personal computers and on the Internet and prohibited innovation on the mainframes and proprietary networks. Yet the innovations made possible by the generative nature of the Internet and personal computers also created its vulnerabilities: viruses, worms, malware, and spyware. Despite his obvious support of generativity, Zittrain admits that the current situation is "not sustainable" (43), but warns that the obvious solutions-such as limited functionality, governmental controls, and censorship-completely undermine the creativity made possible by personal computers and the Internet. The sec- ond part of the book defines generativity and explores its benefits and detriments. Here, Zittrain proposes that information technology functions best when generative, while admitting that we cannot ignore the problems caused by generativity (64), and warns equally of the dangers of controlled appliances: censorships, surveillance, forced legal compliance, and unannounced changes in machine functions. Chapter 6 in this section considers Wikikpedia as a self-regulating generative system that functions imperfectly but well. Part Three proposes technological, legal, and social solutions to the problems discussed earlier in the book.The Future of the Internet intertwines its analysis of current personal computer/Internet problems with current and historical examples from business, law, culture (Internet and otherwise), and technology. These examples, often worthwhile and interesting in and of themselves, underpin Zittrain's analysis rationally and support his conclusions. The examples show that the kind of sledgehammer solutions that Zittrain predicts are not merely possibilities or potentialities, but already have been and are being employed by various companies and governments. Perhaps best of all, Zittrain's use of these historical and current examples avoids the sensationalism often seen in other works that predict governmental and corporate control of options, behavior, and creativity. …

The Future of the Internet and How to Stop It

In this tutorial overview, the principles, advantages, challenges, and practical requirements of optical orthogonal frequency division multiplexing (OFDM)-based optical access are presented, with an emphasis on orthogonal frequency division multiple access (OFDMA) for application in next-generation passive optical networks (PON). General OFDM principles, including orthogonality, cyclic prefix use, frequency-domain equalization, and multiuser OFDMA are summarized, followed by an overview of various optical OFDM(A) transceiver architectures for next-generation PON. Functional requirements are outlined for high-speed digital signal processors (DSP) and data converters in OFDMA-PON. A techno-economic outlook for such a “software-defined,” DSP-based optical access platform is also provided.

OFDM for Next-Generation Optical Access Networks

The following section, Management’s Discussion and Analysis of Operations, provides an overview of the consolidated financial statements of Fujitsu Limited (the “Company”) and its consolidated subsidiaries (together, the “Group”) for the year ended March 31, 2008 (fiscal 2007). Forward-looking statements in this section are based on management’s understanding and best judgment as of March 31, 2008.

Annual Report 2008

Welcome to the second installment of IJBDCN. This issue contains three research papers and a comprehensive survey article on mobile ad hoc networks. We would like to publish a couple of survey or tutorial articles per year as we believe this to be of value to our readers. Many research papers are necessarily focused and do not allow for a " panoramic " view of a particular subject. This is the gap that well-written survey or tutorial papers can fill. We are also planning a guest-edited special issue for the last quarter of this year and welcome your suggestions for future special issues of the journal. This second issue starts with a paper entitled " An Approach to Solving the Surviv-able Capacitated Network Design Problem " where Sridhar and Park studied the problem of selecting links of a network to construct primary and secondary routes for transfer of commodity traffic between nodes of the network. Their technique allows the design of survivable and cost-effective networks. In the second paper, " Query Processing Strategies for Location-Dependent Information Services " , Jayaputera and Taniar propose a new approach to generate a query result for location-dependent information services (LDIS). They argue that choosing a square as the scope of a query and dividing it into four equal regions, where a user is a center point of the scope, results in a faster searching time to find targets queried and brings a bigger chance to get rare targets. In addition, by avoiding resubmitting the same queries when the query results missed, the approach reduced bandwidth use at both the server and client sides. The third paper, " Addressing SPAM E-Mail Using Hashcash " by Curran and Honan tackles a problem experienced by most of us. The authors present the Hashcash proof-of-work approach and investigate the feasibility of implementing a solution based on that mechanism along with what they called a " cocktail " of antispam measures designed to keep junk mail under control. Finally , in the last paper, entitled " MANET: Applications, Issues, and Challenges for the Future " , Dhar presents an informative survey of mobile ad hoc networks, describing the main characteristics of those networks and how they are being used, and discussing the most pressing issues and challenges associated with these temporary wireless networks. We hope that you enjoy this and the upcoming issues of IJBDCN. Our goal is to …

International Journal of Business Data Communications and Networking

This article describes FSAN operator perspectives on the drivers and system requirements for fiber access beyond 10-Gigabit-class PON systems (i.e., NG-PON2 in FSAN terminology). Additionally, a review of potential solutions in scope for NG-PON2 is given in the context of these operator drivers and requirements.

Network operator requirements for the next generation of optical access networks

Next-generation optical access technologies and architectures are evaluated based on operators' requirements. The study presented in this article compares different FTTH access network architectures. Additionally, the impact of new business models on network architectures is discussed.

Opportunities for next-generation optical access

Potential challenges towards next generation optical access technologies and architectures are reviewed based on operator requirements. Additionally the impact of new business models on network architecture is discussed.

Architectural options and challenges for next generation optical access

In order to offer future higher bandwidth applications, the choice for a fiber to the home (FTTH) network seems to be the best candidate. Still, as the full deployment of a new FTTH network involves tremendous civil works and costs, only the highly profitable areas, e.g. city centers, are currently being installed. With the installation of such FTTH networks, all involved parties stay with many questions. What will the future bring on demands from services, upgrades of equipment and maintenance of the new network? What are the next best areas to install and where will an FTTH network require additional public stimulants to succeed? What are the best business models to get a sustainable long term countrywide FTTH installation? In this paper we present the OASE approaches for more in depth analysis of the FTTH total cost of ownership (TCO) and for comparing different possible business models both qualitatively and quantitatively. We show how building a complete TCO tool with a modular approach will help to compare different installation and migration scenarios and it will also form a sound basis for evaluating business models. Here we start with an overview of all actors involved and the roles they can take in the deployment and exploitation of the network.

https://biblio.ugent.be/publication/1936225/file/2952515.pdf

Research approach towards the profitability of future FTTH business models

This study demonstrates that an integrated operator can benefit from cost savings, customer retention and prevention of revenue erosion by FMC migration strategy with introduction of advanced service packages. This development is driven by increasing importance of mobile network capabilities and services, as well as the lessening gap between fixed and mobile systems, in terms of technological models and prices, resulting in greater market-pull and commercially feasible FMC offerings. FMC is expected to offer benefits for network and service operators as well as businesses and consumers. We have also analyzed the operator’s dilemma in selecting an appropriate migration strategy to exploit the benefits of cost savings and generating new revenues, while exposing oneself to the risk of substitution effects among its fixed and mobile products. The objective in this article has been to provide quantitative comparison of some strategic scenarios utilizing techno-economic case study methodology in modeling an integrated operator business in the Western European context. [Article copies are available for purchase from InfoSci-on-Demand.com]

Service offerings for fixed-mobile convergence scenario: an integrated operator case

This paper evaluates the potential market for experience-optimized service delivery also known as Quality of Experience (QoE). The competitive environment, market potential as well as revenue and cost estimations are part of the analysis that has been conducted within the EUREKA CELTIC project RUBENS. Major findings imply an implicit demand for QoE that remains to be explicated and initiated. A major driver for QoE technologies is the need for network operators to be able to deliver new, personalized and video related services with the quality levels that customers expect. This driver goes along with expected network congestion in the future and the wish for network efficiency increases. This results in the need for access and aggregation networks to become more cost efficient, whereas increasing expenditures for control and application servers would be coherent to customer expectations.

Thomas Monath

Papers

Opportunities for next-generation optical access

Architectural options and challenges for next generation optical access

Research approach towards the profitability of future FTTH business models

Service offerings for fixed-mobile convergence scenario: an integrated operator case

Economical analysis of experience-optimized service delivery