Virtual overlay networks, such as virtual private networks or peer-to-peer services, can be seen as a new paradigm for providing multi-service networks. Virtual overlay networks may offer customized services to a specified community while providing a high degree of flexibility in the usage of shared resources. This paper examines the requirements of operating dynamic overlays, in particular, fo...

This study evaluated the fracture strength of teeth restored with bonded ceramic inlays and overlays compared to sound teeth. Thirty sound human maxillary premolars were assigned to 3 groups: 1- sound/unprepared (control); 2- inlays and 3- overlays. The inlay cavity design was Class II MOD preparation with an occlusal width of 1/2 of the intercuspal distance. The overlay cavity design was simil...

Friend-to-friend (F2F) overlays, which restrict direct communication to mutually trusted parties, are a promising substrate for privacy-preserving communication due to their inherent membership-concealment and Sybilresistance. Yet, existing F2F overlays suffer from a low performance, are vulnerable to denial-of-service attacks, or fail to provide anonymity. In particular, greedy embeddings allo...

Unstructured overlay networks for peer-to-peer applications combined with stochastic algorithms for interest-based clustering and resource location are attractive due to low-maintenance costs and inherent fault-tolerance properties. Moreover, there is a relatively large volume of experimental evidence that these methods are efficiency-wise a good alternative to structured methods, which require...

Gossip-based protocols offer a scalable and reliable approach to a number of large-scale distributed applications. The basic idea is for each node to periodically select a random peer node to exchange information with. Analytical studies reveal a high reliability of gossip-based protocols. However, a usual assumption of these studies is that the peer is chosen uniformly at random from the set o...

Overlay networks are virtual communication structures that are logically “laid over” underlying hosting networks such as the Internet. They are implemented by deploying application-level topology maintenance and routing functionality at strategic places in the hosting network [1, 2]. In terms of dependability, most overlays offer proprietary “self-repair” functionality to recover from situation...

In the past few years, overlay networks have received much attention but there has been little study on the “interaction” of multiple, co-existing overlays on top of a physical network. In addition to previously introduced concept of overlay routing strategy such as selfish routing, we introduce a new strategy called “overlay optimal routing”. Under this routing policy, the overlay seeks to min...