results the mean distances between the crestal bone and the implant shoulder in group 1 were 1.01, 1.44, and 1.93 mm at the implant placement time, and at the 6 and 12-month postoperative intervals, respectively. in group 2, these distances were 1.35, 1.20, and 1.41 mm, respectively. there were no significant differences in the marginal bone resorption between the two groups (p > 0.05). conclus...

1389-1286/$ see front matter 2011 Elsevier B.V doi:10.1016/j.comnet.2011.07.023 q V. Sourlas’ work is co-financed by the Europe Social Fund ESF) and Greek national funds thro Program ‘‘Education and Lifelong Learning’’ of th Reference Framework (NSRF) – Research Funding Pro Investing in knowledge society through the Europe work has also been supported by the European Com FP7 PURSUIT program, un...

A big challenge to the grid computing is the communication on the network. The proper placement for replicas on multiple nodes in P2P or grid environment is an effective way to decrease network cost and improve communication efficiency. The unstable peers, networks, and fluctuant user access mode in the distributed environment make replica placement optimization difficult. We construct a networ...

Replica consistency maintenance plays a key role to improve the efficiency of replica management. This paper proposed one P2P Replica-tree based consistency maintenance strategy. In this strategy, social capacity is adopted for description of replica clustering coefficient, and one replica-tree is formed by dividing replica nodes into multi-levels. Especially peer-to-peer network with first-cla...

1. PROBLEM & MOTIVATION Smartdevices are becoming the primary or only Internet point of access for an ever larger fraction of users. Nearly a quarter of current web traffic is mobile, and recent industry studies have estimated a fourfold increase in global mobile data traffic by 2018, mainly driven by data demands and the growing number of smart phones and tablets [7]. Content delivery networks...

Partial collection replication improves performance and scalability of a large-scale distributed information retrieval system by distributing excessive workloads, reducing network latency, and restricting some searches to a small percentage of data. In this paper, we rst examine queries from real system logs and show that there is suucient query locality in real systems to justify partial colle...

P2P architecture appears to fit for enterprise backup. In contrast to dedicated backup servers, nowadays a standard solution, making backups directly on organization’s workstations should be cheaper (as existing hardware is used) and more efficient (as there is no single bottleneck server). However, non-dedicated machines cause other challenges. Update propagation algorithms must take into acco...

P2P architecture is a viable option for enterprise backup. In contrast to dedicated backup servers, nowadays a standard solution, making backups directly on organization’s workstations should be cheaper as existing hardware is used; more efficient as there is no single bottleneck server; and more reliable as the machines can be geographically dispersed. We present an architecture of a p2p backu...

Generic file sharing P2P applications have gained high popularity in the past few years. In particular, P2P streaming architectures have also attracted attention. Many of them consider many-to-one streaming or high-level multicast techniques. In contrast to these models, we propose techniques and algorithms for point-to-point streaming in autonomous systems as it might occur in large companies,...

The stateless cloud-native design improves the elasticity and reliability of applications running in cloud. decouples life-cycle application states from that instances; are written to read cloud databases, deployed close code ensure low latency bounds on state access. However, scalability brings well-known limitations distributed which stored. In this paper, we propose a full-fledged layer supp...