Digital products are illegally used in various areas in the world. This behavior causes bad effects on ecommerce activities. This study aimed to find out factors influencing digital piracy behavior in Vietnam, where digital piracy rate is fairly high. In previous research, the approach focused on separate aspects and the scope focused mainly on students. Therefore, an integrated approach could return a better result. Based on the theory of planned behavior and related researches, this study proposed an integrated model to explore the factors affecting digital piracy behavior in Vietnam. Some viewpoints that have been integrated into the proposed model include a psychological, moral, legal, economic and technological viewpoint. The sample consists of 264 people in Ho Chi Minh City, Vietnam. The results showed that the perceived behavioral control strongly influences the intention, and then on the digital piracy behavior. Besides, perceived behavioral control is influenced by technology development and perceived risk. This research confirmed most of the proposed hypotheses and showed the important role of technology in predicting this kind of behavior in Vietnam. Based on the findings of this study, several suggestions have been made to mitigate the digital piracy situation in Vietnam.
Cobalt oxide hollow nanospheres fabricated by core–shell–corona micelle of poly(styrene-block-methylacrylate-block-ethyleneglycol) in aqueous solution show good electrochemical properties for lithium batteries.
Surface-enhanced resonance Raman scattering (SERRS) of rhodamine 6G was measured on confeito-like Au nanoparticles (CAuNPs). The large CAuNPs (100 nm in diameter) in aqueous dispersion systems showed stronger enhancing effect (analytical enhancement factor: over 105) of SERRS than the small CAuNPs (50 nm in diameter), while the spherical Au nanoparticles (20 nm in diameter) displayed rather weak intensities. Especially, minor bands in 1400–1600 cm−1 were uniquely enhanced by the resonance effect of CAuNPs. The enhancement factors revealed a concentration dependence of the enhancing effect at low concentration of rhodamine 6G. This dependency was due to a large capacity of hot-spots on CAuNPs, which were formed without agglomeration. The surface-enhancing behaviour in the film systems was similar to that in the dispersions, although the large CAuNPs had lower enhancing effect in the films, and the small CAuNPs and the spherical Au nanoparticles were more effective in their films. These results suggest that the CAuNPs have an advantage in ultrasensitive devices both in dispersions and films, compared to the agglomerate of spherical Au nanoparticles.
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