A novel method is disclosed for the preparation of an aqueous polyacrylate modified polyurethane dispersion. The preparation method includes three main steps: (a) preparation of polyacrylates polymer or copolymer without using cationic surfactants; (b) preparation of polyurethane prepolymer with car.....
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The Internet has been a widely-adopted means of media distribution in these days especially after the introduction of MPEG file format. To gain control over listeners', on-line suppliers of music files use authentication schemes to control listeners' access and access mode. Such arrangements requir.....
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Media streaming is getting more and more important as an essential service with the increasing popularity of broadband Internet access. Video-on-demand (VoD) is one of such services where movies are delivered to desktops of distributed users with low delay and free interactivity. However, VoD is not.....
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