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Comparing Atomic Broadcast Algorithms in High Latency Networks

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Analyzing and Protecting Communication Metadata

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Most communication systems (e.g., e-mails, instant messengers, VPNs) use encryption to prevent third parties from learning sensitive information.However, encrypted communications protect the contents but often leak metadata: the amount of data sent and the ...

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Besides being part of the Internet of Things (IoT), drones can play a relevant role in it as enablers. The 3D mobility of UAVs can be exploited to improve node localization in IoT networks for, e.g., search and rescue or goods localization and tracking. On ...

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SBFT is a state of the art Byzantine fault tolerant state machine replication system that addresses the challenges of scalability, decentralization and global geo-replication. SBFT is optimized for decentralization and is experimentally evaluated on a depl ...

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Redundancy in Communication Networks for Smart Grids

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Traditional electric power grids are currently undergoing fundamental changes: Representative examples are the increase in the penetration of volatile and decentralized renewable-energy sources and the emerging distributed energy-storage systems. These cha ...

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EMPoWER Hybrid Networks: Exploiting Multiple Paths over Wireless and ElectRical Mediums

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An Event-Based Architecture to Manage Virtual Human Non-Verbal Communication in 3D Chatting Environment

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A Fault-Tolerant Token-Based Atomic Broadcast Algorithm

André Schiper, Nils Richard Ekwall

Many atomic broadcast algorithms have been published in the last 20 years. Token-based algorithms represent a large class of these algorithms. Interestingly, all the token-based atomic broadcast algorithms rely on a group membership service and none of the ...

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Game Theory in Communications

Vojislav Gajic

Multi-user communication theory typically studies the fundamental limits of communication systems, and considers communication schemes that approach or even achieve these limits. The functioning of many such schemes assumes that users always cooperate, eve ...

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Network Tomography on Correlated Links

Patrick Thiran, Denisa Gabriela Ghita

Network tomography establishes linear relationships between the characteristics of individual links and those of end-to-end paths. It has been proved that these relationships can be used to infer the characteristics of links from end-to-end measurements, p ...

2010

Trustful Cumulus Clouds

Rachid Guerraoui, Maysam Yabandeh

Cloud computing offers an appealing business model and it is tempting for companies to delegate their IT services to the cloud. Yet, a company might ﬁnd it risky to do so for sensible services and to depend entirely on a single provider, which can be vulne ...

2010