In our Pragmatic Object Web approach to distributed object technologies, we integrate complementary aspects of CORBA, Java, COM and WOM. Here, we focus on Microsoft COM and we analyze synergies between DirectX / DirectPlay multi-player multimedia gaming technologies and the DoD Modeling and Simulation technologies such as HLA/RTI. We discuss the integration of both layers via the COM/CORBA brid...

Programming tools that are simultaneously sustainable, highly functional, robust and easy to use have been hard to come by in the HPCC arena. This is partially due to the difficulty in developing sophisticated customized systems for what is a relatively small part of the worldwide computing enterprise. Thus we have developed a new strategy termed HPcc High Performance Commodity Computing[1] whi...

If the computational demands of an interactive graphics rendering application cannot be met by a single commodity Graphics Processing Unit (GPU), multiple graphics accelerators may be utilised on multi-GPU based systems such as SLI [1] or Crossfire [2] or by a cluster of PCs in conjunction with a software infrastructure. Typically these PC cluster solutions allow the application programmer to u...

While hardware resources, in the form of both transistors and full microprocessor cores, are now abundant, economic factors prevent specialized hardware mechanisms, required for secure processing, from being integrated into commodity parts. The Information Assurance community is caught between the need to exploit cheap, fast, commodity microprocessors and the need to ensure that critical securi...

We consider Newton methods for common types of single commodity and multi-commodity network flow problems. Despite the potentially very large dimension of the problem, they can be implemented using the conjugate gradient method and low-dimensional network operations, as shown nearly thirty years ago. We revisit these methods, compare them to more recent proposals, and describe how they can be i...

A variety of integer programming formulations have been proposed for Vehicle Routing Problems (VRPs), including the so-called twoand three-index formulations, the set partitioning formulation, and various formulations based on extra variables representing the flow of one or more commodities. Until now, there has not been a systematic study of how these formulations relate to each other. An exce...

In this paper we consider the evolution of sets by a fractional mean curvature flow. Our main result states that for any dimension n > 2, there exists an embedded surface in R evolving by fractional mean curvature flow, which developes a singularity before it can shrink to a point. When n > 3 this result generalizes the analogue result of Grayson [18] for the classical mean curvature flow. Inte...

According to several studies, the power consumption of the Internet accounts for up to 10% of the worldwide energy consumption, and several initiatives are being put into place to reduce the power consumption of the ICT sector in general. To this goal, we propose a novel approach to switch off network nodes and links while still guaranteeing full connectivity and maximum link utilization. After...

The disease is caused by members of the gammaherpesviruses group. Alcelaphine herpesvirus-1 (AHV-1), carried asymptomatically by the wildebeest (Connochaetes taurinus) in Africa, has been diagnosed in disease outbreaks in zoos in North America. Ovine herpesvirus-2 (OHV-2) is carried asymptomatically by sheep (117). A third, as yet unnamed virus, has been detected in an outbreak of MCF in white-...