A Study on Digital Watermarking Techniques

Digital watermarking was introduced as a result of rapid advancement of networked multimedia systems. It had been developed to enforce copyright technologies for cover of copyright possession. This technology is first used for still images however recently they need been developed for different multimedia objects like audio, video etc. Watermarking, that belong to the information hiding field, has seen plenty of research interest. There's a lot of work begin conducted in numerous branches in this field. The image watermarking techniques might divide on the idea of domain like spatial domain or transform domain or on the basis of wavelets. The copyright protection, capacity, security, strength etc are a number of the necessary factors that are taken in account whereas the watermarking system is intended. This paper aims to produce a detailed survey of all watermarking techniques specially focuses on image watermarking types and its applications in today’s world.

Connecting Genres and Languages in Online Scholarly Communication: An Analysis of Research Group Blogs

Blogs provide an open space for scholars to share information, communicate about their research, and reach a diversified audience. Posts in academic blogs are usually hybrid texts where various genres are connected and recontextualized; yet little research has examined how these genres function together to support scholars’ activity. The purpose of this article is to analyze how the affordances of new media enable the integration of different genres and different languages in research group blogs written by multilingual scholars and to explore how various genres are coordinated in these blogs to accomplish specific tasks. The study reported in this article shows that the functionalities of the digital medium allow research groups to incorporate myriad genres into their genre ecology and interconnect these genres in opportunistic ways to accomplish complex objectives: specifically, to publicize the group’s research and activities, make the work of the group members available to the disciplinary community, strengthen social links within their community and connect with the interested public, and raise social awareness. Findings from this study provide insights into the ways in which scholars write networked, multimedia, multigenre texts to support the group’s social and work activity.