Active XML (AXML) is a new markup language framework that provides the ability to exchange intensional data. The intensional data is defined in the AXML documents as calls to local or remote Web services. AXML aims to improve the task partition and distribution in P2P networks. However, if one peer joins more than one P2P network and its services are invoked frequently by a large number of peer...

The bottleneck (BN) of a production line is a machine that impedes the system’s performance in the strongest manner. It has been shown in the previous work that the so-called downtime bottlenecks (DT-BNs) are of main industrial importance. In this paper, a method for DT-BN identification is developed in the framework of serial production lines with unreliable (Markovian) machines and finite buf...

The amount of scientific data generated by simulations or collected from large scale experiments have reached levels that cannot be stored in the researcher’s workstation or even in his/her local computer center. Such data are vital to large scientific collaborations dispersed over wide-area networks. In the past, the concept of a Grid infrastructure [1] mainly emphasized the computational aspe...

Akamatsu et al.(2006) proposed a new transportation demand management scheme called “tradable bottleneck permits” (TBP), and proved its efficiency properties for a single bottleneck model. This paper explores the properties of a TBP system for general networks. An equilibrium model is first constructed to describe the states under the TBP system. It is proved that equilibrium resource allocatio...

Current schedulers in the cloud computing platform are facing the performance requirement. However, due to lack of the theoretical and practical guidance on multi-resource scheduling, algorithms in the schedulers are neglecting the difference between resource demand vectors and resource demand flow, resulting into the large resource waste caused by fragmentation, with all tasks struggling with ...

We focus in this paper on the performance evaluation of video streaming over mobile ad-hoc networks (MANETs) using resource constrained handheld real world devices, namely Nokia 770/N800 Internet Tablets. The main results from our experiments reveal that in principle video streaming in a multi-hop wireless ad-hoc network using such devices is possible. However, playing and forwarding the video ...

Multitasking often has to be investigated with experiments using complex tasks. An example is our research on the ‘bottleneck’ role of the problem state resource (Borst, Taatgen, & Van Rijn, 2010). The problem state resource is the part of working memory that is used to store intermediate results. Previously, we have shown that its capacity is limited to one element. Because we were interested ...

Refuges or shelters have been central to UK domestic violence service provision since the 1970s. In 2013, policy transformed teenagers into primary users of refuges. Digital technology is teenagers’ lives but moving a refuge can cause serious disruption in this respect.The study was undertaken 20 refuges England. Repeat qualitative interviews with young people aged 13–18 and single staff explor...

The rapid rise in popularity of multimedia applications, such as VoIP, IPTV and Video Conferencing, intensifies the need to consider resource management for user satisfaction. Furthermore, improving Quality of Experience (QoE) in Software Defined Networks (SDNs) services is one of the important issues to be addressed by provisioning optimum resource management. In this paper, resource allocatio...

There is consensus that temperature plays a major role in shaping microbial activity, but there are still questions as to how temperature influences different aspects of bacterioplankton carbon metabolism under different environmental conditions. We examined the temperature dependence of bacterioplankton carbon metabolism, whether this temperature dependence changes at different temperatures, a...