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Das Potential von Peer-to-Peer-Netzen und -Systemen : Architekturen, Robustheit und rechtliche Verortung

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ISBN: 9783866443273 Year: Pages: XV, 294 p. DOI: 10.5445/KSP/1000010010 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:58
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Um das Potential von P2P-Netzen und -Systemen für die Entwicklung und den Betrieb zukünftiger verteilter Systeme zu analysieren, erfolgt in der Arbeit zunächst eine umfassende Darlegung des aktuellen Entwicklungsstandes. Daraus leiten sich wesentliche Fragestellungen hinsichtlich Architektur, Robustheit und Telekommunikationsrecht ab. In der Folge werden diese untersucht, indem vorhandene Mechanismen bewertet sowie durch neuartige Verfahren ergänzt werden, um bestehende Defizite auszugleichen.

Selbstorganisierende Empfehlungssysteme im Internet : eine interdisziplinäre Betrachtung zwischen Technik und Recht

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ISBN: 9783866442337 Year: Pages: XVIII, 245 p. DOI: 10.5445/KSP/1000007969 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:58
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Die Arbeit untersucht die Einordnung von Peer-to-Peer-Systemen in das Datenschutzrecht und Folgen für selbstorganisierende Empfehlungssysteme. Ein nutzer- und ein objektbasierter Ansatz für ein solches System werden entworfen und evaluiert. Spezifische Vorteile bezüglich Empfehlungsqualität einerseits sowie Skalierbarkeit andererseits werden in einem kombinierten Ansatz vereint. Vorschläge zur Fortentwicklung des Rechts der Peer-to-Peer-Systeme bilden den Abschluss der Dissertation.

Peer to Peer

Authors: --- ---
Book Series: Critical Digital and Social Media Studies ISBN: 9781911534785 9781911534778 9781911534792 9781911534808 Year: Pages: 102 DOI: 10.16997/book33 Language: English
Publisher: University of Westminster Press Grant: University of Westminster
Subject: Science (General) --- Business and Management --- Economics --- Sociology --- Social Sciences
Added to DOAB on : 2019-04-11 11:21:03
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"Not since Marx identified the manufacturing plants of Manchester as the blueprint for the new capitalist society has there been a more profound transformation of the fundamentals of our social life. As capitalism faces a series of structural crises, a new social, political and economic dynamic is emerging: peer to peer. What is peer to peer? Why is it essential for building a commons-centric future? How could this happen? These are the questions this book tries to answer. Peer to peer is a type of social relations in human networks, as well as a technological infrastructure that makes the generalization and scaling up of such relations possible. Thus, peer to peer enables a new mode of production and creates the potential for a transition to a commons-oriented economy. "

Verteilter Namensdienst für dezentrale IP-Telefonie

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ISBN: 9783866446250 Year: Pages: XIII, 252 p. DOI: 10.5445/KSP/1000021696 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:58
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Internet-Telefonie setzt bislang die Bereitstellung einer Infrastruktur mit zentralen Servern voraus. Gegenstand dieser Arbeit ist der Entwurf eines dezentralen Systems, das mit Hilfe von Peer-to-Peer-Technologien zukünftigdie kostengünstige Erbringung vollständig dezentraler Telefoniedienste über das Internet ermöglicht. Der Schwerpunkt des Entwurfs liegt dabei auf den beiden Aspekten Sicherheit und Effizienz, die sich gegenseitig beeinflussen und somit im Zusammenspiel betrachtet werden.

Effizientes Routing in strukturierten P2P Overlays

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ISBN: 9783866447875 Year: Pages: XII, 239 p. DOI: 10.5445/KSP/1000025320 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:00
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Als Fundament für neuartige Netzwerkanwendungen sind strukturierte P2P Overlays attraktiv. In diesen Strukturen folgen Datenpakete logischen Verbindungen zwischen den Netzwerkteilnehmern, die jedoch meist komplexen Wegen durch das zugrunde liegende Netzwerk entsprechen. Die in dieser Arbeit vorgestellten Konzepte verringern die daraus resultierenden hohen Routing-Latenzen im Overlay. Schwerpunkt dabei ist ein Verfahren zur Vergabe von auf Netzwerk-Koordinaten basierenden Teilnehmerkennungen.

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

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ISBN: 9783731503286 Year: Pages: XIII, 191 p. DOI: 10.5445/KSP/1000045068 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:02
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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.

Youth at the crossroads - Discourses on socio-cultural change in post-war Northern Uganda

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Book Series: Göttingen Series in Social and Cultural Anthropology ISBN: 9783863951696 Year: DOI: 10.17875/gup2014-752 Language: English
Publisher: Universitätsverlag Göttingen
Subject: Sociology --- Social Sciences
Added to DOAB on : 2014-12-06 11:01:24
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Based on eleven months of field work (2009-2011), this book analyzes the situation of youth in urban Gulu, Northern Uganda, in the aftermath of the war between the Lord’s Resistance Army and the Ugandan Government (1986-2006). Specifically, it focuses on the generation that was born and grew up during the 20-year war: How do members of this generation perceive and evaluate socio-cultural changes which occurred in Acholi society throughout the war years? How do they imagine their future society? And how do they react to the expectations directed at them by their elders? In order to answer these questions, the book draws on rich ethnographic material. It provides an in-depth analysis of how imaginations of the post-war society are contested and negotiated between different groups of social actors – youth and elders, men and women as well as local, national and international actors. While some try to re-establish former cultural practices and conventions and call for a ‘retraditionalization’ of Acholi society, others lobby for ‘modernization’ and attempt to establish ‘new’ social structures, values and norms which are strongly influenced by local understandings of ‘the Western culture’. The book presents numerous examples of the multiple and complex ways young people strategically position themselves in these debates and make use of the various discourses on culture, tradition and modernity in their negotiations of generational, gender, family, and peer-to-peer relations.

Flexible Application-Layer Multicast in Heterogeneous Networks

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ISBN: 9783731500216 Year: Pages: XXIII, 268 p. DOI: 10.5445/KSP/1000034623 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:02
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This work develops a set of peer-to-peer-based protocols and extensions in order to provide Internet-wide group communication. The focus is put to the question how different access technologies can be integrated in order to face the growing traffic load problem. Thereby, protocols are developed that allow autonomous adaptation to the current network situation on the one hand and the integration of WiFi domains where applicable on the other hand.

Methods and Concepts for Designing and Validating Smart Grid Systems

Authors: --- ---
ISBN: 9783039216482 9783039216499 Year: Pages: 408 DOI: 10.3390/books978-3-03921-649-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 16:10:12
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Energy efficiency and low-carbon technologies are key contributors to curtailing the emission of greenhouse gases that continue to cause global warming. The efforts to reduce greenhouse gas emissions also strongly affect electrical power systems. Renewable sources, storage systems, and flexible loads provide new system controls, but power system operators and utilities have to deal with their fluctuating nature, limited storage capabilities, and typically higher infrastructure complexity with a growing number of heterogeneous components. In addition to the technological change of new components, the liberalization of energy markets and new regulatory rules bring contextual change that necessitates the restructuring of the design and operation of future energy systems. Sophisticated component design methods, intelligent information and communication architectures, automation and control concepts, new and advanced markets, as well as proper standards are necessary in order to manage the higher complexity of such intelligent power systems that form smart grids. Due to the considerably higher complexity of such cyber-physical energy systems, constituting the power system, automation, protection, information and communication technology (ICT), and system services, it is expected that the design and validation of smart-grid configurations will play a major role in future technology and system developments. However, an integrated approach for the design and evaluation of smart-grid configurations incorporating these diverse constituent parts remains evasive. The currently available validation approaches focus mainly on component-oriented methods. In order to guarantee a sustainable, affordable, and secure supply of electricity through the transition to a future smart grid with considerably higher complexity and innovation, new design, validation, and testing methods appropriate for cyber-physical systems are required. Therefore, this book summarizes recent research results and developments related to the design and validation of smart grid systems.

Keywords

adaptive control --- fuzzy logic --- cell --- frequency containment control (FCC) --- power frequency characteristic --- droop control --- smart grids --- substation automation system (SAS) --- high-availability seamless redundancy (HSR) --- seamless communications --- traffic reduction technique --- Power Hardware-in-the-Loop (PHIL) --- interface algorithm (IA) --- operational range of PHIL --- linear/switching amplifier --- cyber-physical energy system --- co-simulation --- conceptual structuration --- coupling method --- linear decision rules --- optimal reserve allocation --- robust optimization --- web of cells --- demand response --- real-time balancing market --- elastic demand bids --- shiftable loads --- market design --- market design elements --- Web-of-Cells --- procurement scheme --- remuneration scheme --- pricing scheme --- cascading procurement --- real-time simulation --- hardware-in-the-Loop --- synchrophasors --- micro-synchrophasors --- distribution phasor measurement units --- distribution grid --- time synchronization --- PHIL (power hardware in the loop) --- simulation initialization --- synchronization --- time delay --- synchronous power system --- stability --- accuracy --- peer-to-peer --- distributed control --- device-to-device communication --- voltage control --- experimentation --- smart grid --- cyber physical co-simulation --- information and communication technology --- 4G Long Term Evolution—LTE --- network reconfiguration --- fault management --- power loss allocation --- plug-in electric vehicle --- smart grid --- locational marginal prices --- microgrid --- resilience --- investment --- underground cabling --- network outage --- battery energy storage system (BESS) --- micro combined heat and power (micro-CHP) --- electricity distribution --- solar photovoltaics (PV) --- islanded operation --- distributed control --- microgrid --- hardware-in-the-loop --- average consensus --- multi-agent system --- active distribution network --- laboratory testbed --- renewable energy sources --- DC link --- centralised control --- interoperability --- smart energy systems --- use cases --- IEC 62559 --- SGAM --- TOGAF --- integration profiles --- IHE --- testing --- gazelle --- connectathon --- Hardware-in-the-Loop --- Software-in-the-Loop --- Power-Hardware-in-the-Loop --- Quasi-Dynamic Power-Hardware-in-the-Loop --- smart grids --- real-time simulation --- validation and testing --- decentralised energy system --- smart grids control strategies --- smart grid --- wind power --- synchronized measurements --- PMU --- data mining --- Architecture --- Development --- Enterprise Architecture Management --- Model-Based Software Engineering --- Smart Grid --- Smart Grid Architecture Model --- System-of-Systems --- Validation --- design, development and implementation methods for smart grid technologies --- modelling and simulation of smart grid systems --- co-simulation-based assessment methods --- validation techniques for innovative smart grid solutions --- real-time simulation and hardware-in-the-loop experiments

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