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Through analyzing the problems in the development process of LED (light-emitting diode) lighting industry, The necessity of application of advanced information and communication technology to solving problems has been explained, The architecture of the service-oriented collaborative business platform for LED lighting has been proposed, which consists of e-commerce systems and collaborative work system,...
The enlarging income differences in the past three decades in Chinese economy have attracted worldwide academic attention. This paper reviews the dynamics of theoretic research on skill premium and wage differences. Using a panel data of 1987-2006 in China, this paper explores the evolutions of skill premium. Finally, this paper comes up with some proposals on decreasing skill premium and wage differences.
Based on spatial and DCT domains this paper proposes a novel digital watermark solution for the color image of screen stream in multimedia courseware. It embeds visible watermark into spatial domain adaptively, and also embeds invisible watermark encrypted by chaotic sequence into the remained area of the screen color image to achieve protected screencolor image with dual digital watermark embedded...
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