Broadband satellite-based IP networks have been considered as the technology to enable a strong and promising next-generation market. In satellite communication systems, the channel performance might be severely degraded due to the dynamic weather conditions such as the precipitation, and thereby lead to network congestion. Therefore, congestion control is critical in such networks to satisfy Q...

TCP Vegas is regarded as balanced congestion control strategy, however, shortcomings such as low bandwidth utilization and not gain fairness when sharing link with TCP Reno. We reinvestigate these issues and propose a modification strategy called Dynamic Vegas, which changes initial TCP Vegas’ in slow start and congestion avoidance phase. It dynamically chooses slow start algorithm and adjust d...

Developing measurement tools that can concurrently monitor congested Internet links at a large scale would significantly help us understand how the Internet operates. While congestion at the Internet edge typically arises due to bottlenecks existent at a connection’s last mile, congestion in the core could be more complex. This is because it may depend upon internal network policies and hence c...

We present Vivace, a key-value storage system for web applications that span many geographicallydistributed sites. Vivace provides strong consistency and replicates data across sites for access locality and disaster tolerance. Vivace is designed to cope well with network congestion across sites, which occurs because the bandwidth across sites is smaller than within sites. To deal with congestio...

Objective(s): Liver ischemia-reperfusion injuries (I/RI) are typically the main causes of liver dysfunction after various types of liver surgery especially liver transplantation. Radical components are the major causes of such direct injuries. We aimed to determine the beneficial effects of silibinin, a potent radical scavenger on liver I/RI.Materials...

Objective(s): Due to wide range of medical applications as bactericidal agents, nanosilver particles (NSPs) are manufactured worldwide in large quantities. However, potential toxicity impacts of NSPs in humans and animals still remain poorly understood. The objective of this study was to investigate clinical observations, mortality and pathological changes in rats follow...

the method for measuring the congestion of noura et al. [a.a. noura, f. ‎hosseinzadeh lotfi, g.r. jahanshahloo, s. ‎fanati rashidi, r.p. barnett, a new method for measuring congestion in data envelopment analysis, socio-economic planning sciences, 44 (2010) 240-246] ,there is no problem for congestion detection in the case of one input and one output but in higher space is not able to detect co...

Pulmonary congestion is highly prevalent and often asymptomatic among patients with ESRD treated with hemodialysis, but whether its presence predicts clinical outcomes is unknown. Here, we tested the prognostic value of extravascular lung water measured by a simple, well validated ultrasound B-lines score (BL-US) in a multicenter study that enrolled 392 hemodialysis patients. We detected modera...

Given a set of request pairs in a network, the problem of routing virtual circuits with low congestion is to connect each pair by a path so that few paths use the same link in the network. We build on an earlier multicommodity ow based approach of Leighton & Rao to show that \short" ow-paths lead to path-selections with \low" congestion. This shows that such good path-selections exist for const...

The strong drive toward ubiquitous networks through end system mobility has made it necessary to include wireless networks, such as wireless local area networks (LANs) and satellite networks. Networks with wireless links suffer from significant packet-losses due to bit errors. The congestion detection mechanism of congestion control based on dynamic window flow control, which is widely used for...