Many computer viruses spread via electronic mail, making use of computer users' email address books as a source for email addresses of new victims. These address books form a directed social network of connections between individuals over which the virus spreads. Here we investigate empirically the structure of this network using data drawn from a large computer installation, and discuss the im...

The use of physical paper is often preferred due to its unique properties that improve various aspects reading. However, digital media and information are more engaging, diverse, up date, thereby challenging the existence in our everyday life. By combining two types a seamless way, interactivity multimedia content can complement reading experience, maintaining feel books. current state art addr...

This paper defines "electronic publications in medicine (EPM)" as computer based training programs, databases, knowledge-based systems, multimedia applications and electronic books running on standard platforms and available by usual distribution channels. A detailed catalogue of quality criteria as a basis for development and evaluation of EPMs is presented. The necessity to raise the quality ...

Within the European Union (EU), printed and electronic versions of publications are treated differently. Whereas books, newspapers and periodicals are subject to a reduced rate of VAT, electronic publications, of all types, are charged with the full rate of VAT [1]. These regulations have several consequences for European libraries and the market for scholarly publications in Europe, not least ...

With electronic book (e-book) sales and readership rising, are e-books positioned to replace print books? This study examines the preference for e-books and print books in the contexts of reading purpose, reading situation, and contextual variables such as age, gender, education level, race/ethnicity, income, community type, and Internet use. In addition, this study aims to identify factors tha...