A set of simple queuing theory models which can model the average response of a network of computers to a given traffic load has been implemented. The impact of variations in traffic patterns and intensities, channel capacities, and message protocols can be assessed using them because of the lack of fine detail in the network traffic rates, traffic patterns, and the hardware used to implement t...

Roughness elements or turbulence promoters have been widely used to enhance heat transfer in cooling passages of modern gas turbine blades. Although such ribs substantially enhance heat transfer, the heat transfer coefficient is reduced immediately at corner downstream of each rib, creating hot spots. To remove such hot spots some of the ribs can be detached from the channel walls. In this pape...

Bulk transport underlies data exfiltration and code update facilities in WSNs, but existing approaches are not designed for highly lossy and variable-quality links. We observe that Maymounkov’s rateless online codes are asymptotically more efficient, but can perform poorly in the WSN operating region. We analyze and optimize coding parameters and present the design and evaluation of RTOC, a pro...

This paper considers reliable data transfer in a high-speed network (HSN) in which the perconnection capacity is very large. We focus on sliding window protocols employing selective repeat for reliable data transfer and study two reliability mechanisms based on ARQ and FEC. The question we ask is which mechanism is more suitable for an HSN in which the scalability of reliable data transfer in t...

This document describes a framework for the standardization of bulkdata reliable multicast transport. It builds upon the experience gained during the deployment of several classes of contemporary reliable multicast transport, and attempts to pull out the commonalities between these classes of protocols into a number of building blocks. To that end, this document recommends that certain componen...

Wireless body area network, WBAN, is a network designed by low-power devices that are located on, in or around the human body and are used to monitor physiological signals and motion for medical, personal entertainment and other applications and purposes In Wireless Body Area Network, Sensor nodes are typically powered with battery, which have insufficient life time. Even though renewable energ...

As the network bandwidth and delay increase, TCP becomes inefficient. Data intensive applications over high-speed networks such as the computational grids need new transport protocol to support them. This paper describes a general purpose high performance data transfer protocol as an application level solution. The protocol, named UDT, or UDP-based data transfer protocol, works above UDP with r...

The vision of a broadly unified and pervasive communication paradigm where people can freely communicate with wide range of devices (cell phones, PDAs, laptops, palmtops etc.) using networks of wired and wireless links is gradually taking shape [4][5]. Whilst this is going to offer enormous flexibility to an end user in accessing data, it is also going to bringin several new challenges, yet unk...

GridFTP is a high-performance, secure, reliable data transfer protocol optimized for high-bandwidth wide-area networks. It is based on the Internet FTP protocol, and it defines extensions for high-performance operation and security. The Globus implementation of GridFTP provides a software suite optimized for the gamut of data access issues—from bulk file transfer to the details of getting data ...