Knowledge about movement of hydrocarbon-based fuels in ice is relevant to marine and terrestrial fuel spills in polar regions, and to the dispersion of hydrocarbon-based drilling fluids used to maintain lithostatic pressure in deep ice coring projects. The latter is of concern from both environmental and sample integrity aspects, particularly for projects that plan to sample deep subglacial env...

In this paper, an enhanced error protection scheme using flexible macroblock ordering in H.264/AVC is proposed. The algorithm uses a two-phase system. In the first phase, the importance of every macroblock is calculated based on its influence on the current frame and future frames. In the second phase, the macroblocks with the highest impact factor are grouped together in a separate slice group...

In this work, we study the benefits of using application layer multicast in ad hoc networks. We propose a flexible receiver-driven overlay multicast protocol that we call the Application Layer Multicast Algorithm (ALMA). As an application layer protocol, ALMA constructs an overlay multicast tree of logical links between the group members. Our protocol has the advantages of an application layer ...