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Pd core–silica shell particles (Pd@SiO 2 ) were prepared by encapsulating Pd colloids with a silica shell through the Stöber method. The palladium core particles were well dispersed (Dispersion=43%) and had uniform size (4nm) and shape inside the porous silica shell. Pd@SiO 2 showed good catalytic activity (554mmol H 2 O 2 /g Pd·h) for the direct synthesis of H ...
Ubiquitous and pervasive computing (UPC) is a popular paradigm whose purpose is to emerge computers into the real world, to serve humans where the ubiquitous network is the underneath infrastructure. In order to provide ubiquitous services (u-Service) which deliver useful information to service users without human intervention, this paper implements a proactive information delivery system using Bluetooth...
We consider the design of survivable logical topologies over physical WDM ring networks. The logical topology consists of the same set of nodes as the physical topology, and the links of the logical topology are lightpaths in the physical topology. The logical topology is said to be survivable if the failure of any single physical link does not disconnect the logical topology. In this paper, we consider...
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