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The effects of concentration and temperature on dynamics of poly(N-isopropylacrylamide)-graft-poly(ethylene oxide) (PNIPAM-g-PEO) chains in semi-dilute aqueous solution were studied by static and dynamic laser light scattering. The intensity–intensity time correlation function shows a fast and a slow relaxation mode, with line widths Γ f and Γ s , respectively. Γ f is scaled...
The grafting of thiol-terminated poly[(2-dimethylamino)ethyl methacrylate] (HS-PDMEM) chains to a gold surface from a solution was investigated with quartz crystal microbalance with dissipation (QCM-D) in real time. The frequency and energy dissipation responses revealed a three-regime-kinetics of the grafting. The chains are quickly grafted in regime I forming a random mushroom. In regime II, the...
Overlay networks have been recently developed to support multicast framework. Specially, overlay architectures based on proxies and leased lines can provide applications with optimal performance in terms of bandwidth, reliability, delay guarantee, etc. In this paper, we propose a balanced multicast routing algorithm for these proxy-based overlay architectures to utilize the network resources efficiently...
LMDS is one kind of fixed broadband wireless access network. It uses radio spectrum between 10GHz and 40GHz to transmit voice, video, and data signals within small cell 3-10 miles in diameter. This paper proposes some key technical scenarios to support videoconferencing services transported on LMDS. Firstly, two kinds of typical LMDS lower layer standards made by DAVIC and 802.16 separately are discussed...
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