An exact algorithm for linear optimization problem subject to max-product fuzzy relational inequalities with fuzzy constraints

Fuzzy relational inequalities with fuzzy constraints (FRI-FC) are the generalized form of fuzzy relational inequalities (FRI) in which fuzzy inequality replaces ordinary inequality in the constraints. Fuzzy constraints enable us to attain optimal points (called super-optima) that are better solutions than those resulted from the resolution of the similar problems with ordinary inequality constraints. This paper considers the linear objective function optimization with respect to max-product FRI-FC problems. It is proved that there is a set of optimization problems equivalent to the primal problem. Based on the algebraic structure of the primal problem and its equivalent forms, some simplification operations are presented to convert the main problem into a more simplified one. Finally, by some appropriate mathematical manipulations, the main problem is transformed into an optimization model whose constraints are linear. The proposed linearization method not only provides a super-optimum (that is better solution than ordinary feasible optimal solutions) but also finds the best super-optimum for the main problem. The current approach is compared with our previous work and some well-known heuristic algorithms by applying them to random test problems in different sizes.Comment: 29 pages, 8 figures, 7 table

Confidential Data-Outsourcing and Self-Optimizing P2P-Networks: Coping with the Challenges of Multi-Party Systems

This work addresses the inherent lack of control and trust in Multi-Party Systems at the examples of the Database-as-a-Service (DaaS) scenario and public Distributed Hash Tables (DHTs). In the DaaS field, it is shown how confidential information in a database can be protected while still allowing the external storage provider to process incoming queries. For public DHTs, it is shown how these highly dynamic systems can be managed by facilitating monitoring, simulation, and self-adaptation

Online Media Piracy: Convergence, Culture, and the Problem of Media Change

This thesis proposes that there is a symbiotic relationship between the emergence of online media piracy and the industrial, economic and legal changes that have shaped contemporary popular media in the early 21st century. The Internet is at the heart of most recent transformations of the popular media environment, such as the emergence of video-on-demand formats for film and television consumption and the impact this has had on the nature of those media forms. This thesis discusses the powerful role played by online media piracy in shaping these developments, both through changing the expectations of consumers, and the options that are available for distributors of media content. As well as exploring the diverse forms and practices of online media piracy today, this thesis also explores theories of media change, considering how we might understand such piracy as a force underpinning media change, and how the changes it has helped shape might be placed in a broader historical context. To that end, the history and impact of online media piracy are considered alongside other examples, such as the arrival of video recording devices and the expansion of cable television in the 1980s and 90s, and the significance of international trade deals impacting access to media via “geoblocking” and other techniques of access management. Finally, this thesis also examines debates around copyright, and the potential political significance of piracy as a tool for accessing media and culture, viewing online media piracy as a crucial practice appearing at a nexus of industrial and popular interests, tied to technological, economic and legal developments, and to changing consumer behavior and expectations

Internet Daemons: Digital Communications Possessed

We’re used to talking about how tech giants like Google, Facebook, and Amazon rule the internet, but what about daemons? Ubiquitous programs that have colonized the Net’s infrastructure—as well as the devices we use to access it—daemons are little known. Fenwick McKelvey weaves together history, theory, and policy to give a full account of where daemons come from and how they influence our lives—including their role in hot-button issues like network neutrality. Going back to Victorian times and the popular thought experiment Maxwell’s Demon, McKelvey charts how daemons evolved from concept to reality, eventually blossoming into the pandaemonium of code-based creatures that today orchestrates our internet. Digging into real-life examples like sluggish connection speeds, Comcast’s efforts to control peer-to-peer networking, and Pirate Bay’s attempts to elude daemonic control (and skirt copyright), McKelvey shows how daemons have been central to the internet, greatly influencing everyday users. Internet Daemons asks important questions about how much control is being handed over to these automated, autonomous programs, and the consequences for transparency and oversight. Table of Contents Abbreviations and Technical Terms Introduction 1. The Devil We Know: Maxwell’s Demon, Cyborg Sciences, and Flow Control 2. Possessing Infrastructure: Nonsynchronous Communication, IMPs, and Optimization 3. IMPs, OLIVERs, and Gateways: Internetworking before the Internet 4. Pandaemonium: The Internet as Daemons 5. Suffering from Buffering? Affects of Flow Control 6. The Disoptimized: The Ambiguous Tactics of the Pirate Bay 7. A Crescendo of Online Interactive Debugging? Gamers, Publics and Daemons Conclusion Acknowledgments Appendix: Internet Measurement and Mediators Notes Bibliography Index Reviews Beneath social media, beneath search, Internet Daemons reveals another layer of algorithms: deeper, burrowed into information networks. Fenwick McKelvey is the best kind of intellectual spelunker, taking us deep into the infrastructure and shining his light on these obscure but vital mechanisms. What he has delivered is a precise and provocative rethinking of how to conceive of power in and among networks. —Tarleton Gillespie, author of Custodians of the Internet Internet Daemons is an original and important contribution to the field of digital media studies. Fenwick McKelvey extensively maps and analyzes how daemons influence data exchanges across Internet infrastructures. This study insightfully demonstrates how daemons are transformative entities that enable particular ways of transferring information and connecting up communication, with significant social and political consequences. —Jennifer Gabrys, author of Program Eart

The ambivalences of piracy : BitTorrent media piracy and anti-capitalism

This thesis argues that a more nuanced study of online media piracy is necessary in order to augment the dominant focus on piracy's relationship to copyright. Copyright as a frame for understanding piracy's relationship to capitalism has left potentially more crucial areas of study neglected. An approach to understanding the relationship of media piracy to anticapitalist projects must engage with forms of media piracy in their specificity and not as a homogeneous field. The thesis argues that it is possible and necessary to push beyond the constraints of copyright activism and intellectual property and in so doing opens up new areas of inquiry into online media piracy's potential to challenge logics of property and commodification. Original research is presented in the form of a highly detailed description and analysis of private BitTorrent filesharing sites. These sites are secretive and yet to receive scholarly attention in such a detailed and systematic way. This research finds both public and private variants of BitTorrent media piracy to be highly ambivalent with regards to their transformative potentials in relation to capital and thus tempers more extreme views of piracy as wholly revolutionary and emancipatory, and those that see pirate as a 'simple' form of theft. Public and private BitTorrent filesharing are theorised through the lens of Autonomist Marxism, a perspective that has a novel view of technology both as a tool of domination and a force for potential emancipation. Piracy is analysed for its capacity to refuse the valorisation of the enjoyment of music or film via the surveillance and tracking of audiences, which has become typical for contemporary legal online distribution venues. The thesis further analyses BitTorrent piracy's relationship to the 'common', the shared capacities for creating knowledge, ideas, affects. The thesis concludes that further scholarly research must move beyond concerns for creators' remuneration and its focus on reforming existing copyright policy and instead engage with the emergent institutional structures of organised media piracy. Though publicly accessible BitTorrent piracy has contributed to a broadening of awareness about issues of access to information, such an awareness often leaves in place logics of private property and capitalist accumulation. Finally, the thesis argues that the richness and complexity of private sites' organisational valences carry with them greater potential for radically destabilising capitalist social relations with regard to the distribution of cultural production

Telecommunications Networks

This book guides readers through the basics of rapidly emerging networks to more advanced concepts and future expectations of Telecommunications Networks. It identifies and examines the most pressing research issues in Telecommunications and it contains chapters written by leading researchers, academics and industry professionals. Telecommunications Networks - Current Status and Future Trends covers surveys of recent publications that investigate key areas of interest such as: IMS, eTOM, 3G/4G, optimization problems, modeling, simulation, quality of service, etc. This book, that is suitable for both PhD and master students, is organized into six sections: New Generation Networks, Quality of Services, Sensor Networks, Telecommunications, Traffic Engineering and Routing

Tracing back Communities. An Analysis of Ars Electronica's Digital Communities archive from an ANT perspective

Since long before the popularization of the Web, community-making has been a significant driving force for the development of the Internet. As a consequence, in mid 1990s online communities became a key object of study at the intersection of social sciences, organizational studies and computer sciences. Today, about fifteen years after these early studies, the concept \u2018online community\u2019 seems to be at stake. As a matter of fact, while communitarian ties enabled by digital media are more and more invocated, in late 2000s the Internet is revealing itself as a much more bureaucratic and profit-oriented domain than ever, to the point that it is not clear whether there exist online ties that are specific enough to be called \u2018communitarian\u2019. In order to analyse such an opaque and unstable object of study as current techno-social assemblages, innovative methods specifically developed to study fuzzy objects have to be devised and some epistemological questions have to be addressed. This research starts indeed from the impasse that the digital communitarian culture is experiencing at the end of the 2000s and borrows some epistemological insights from the Actor-Network Theory. By analyzing the entry forms submitted to the world\u2019s leading competition for digital communities, Prix Ars Electronica, this research thus calls into question some \u2018black-boxed\u2019 concepts like \u2018cyberculture\u2019, \u2018digital revolution\u2019, \u2018empowerment\u2019 and \u2018online community\u2019 itself. On one hand, the results bring into question both leading sociological positions and hype-generated commonplaces. On the other hand, the results offer evidence to those arguments according to which current ICT developments represent the beginning of a new phase of technological enclosure

New technologies of democracy: how the information and communication technologies are shaping new cultures of radical democratic politics.

What characterises contemporary democratic political struggles? According to the post-Marxist theory of Ernesto Laclau and Chantal Mouffe, it is their sheer unknowability, the fact that there can be no certainties, no fixed grounding. Drawing a distinction between the 'certainties' of classical Marxism (i. e. base/superstructure) and the more 'diffuse' nature of modem democratic demands (such as sexual and gender equality, environmentalism and the peace movements), the emergence of a post-Marxist perspective has endeavoured to engage the widening imaginaries of present-day democratic politics. In this thesis the central post-Marxist category of radical democracy, defined literally as the 'multiplication of public spaces of antagonism, is interrogated in relation to new modes and ideas of contemporary political struggle, particularly those associated with the expansion of the ICTs and networks. Arguing for the need to consider politics beyond the somewhat outmoded and uninspiring description of the 'new social movements', this thesis critically investigates the emerging practices of politics and activism enabled by the technologies like the Internet, using the ideas of post-Marxism as a basis for generating new theories of radical democracy. Looking in particular at the practices of Tactical Media and Culture Jamming, together with new methods of interaction and consumption, such as peer-to-peer file sharing and open publishing on the Internet, this study demonstrates how radical democracy contains as yet unthoughtout critical potentials through which to examine the ICTs in relation to these nascent cultures of politics. These emerging political cultures, this thesis suggests, entail the articulation of other ways of conceiving democracy, the political and politics more appropriate to the increasingly networked nature of contemporary society