Many online community platforms such as LibraryThing, last.fm, flickr, and CiteULike store data about users, friend relationships between users, and for each user a list of items he interacted with. Depending on the usage scenario, items may be books, songs, pictures, or scientific publications, respectively. In social network analysis it is widely assumed that people tend to gather in groups o...

Much empirical evidence shows that individuals usually exhibit significant homophily in social networks. We demonstrate, however, skill complementarity enhances heterophily in the formation of collaboration networks, where people prefer to forge social ties with people who have professions different from their own. We construct a model to quantify the heterophily by assuming that individuals ch...

Since 1950, information flows have been in the centre of scientific research. Up until internet penetration in the late 90s, these studies were based over traditional offline social networks. Several observations in “offline” information flows studies, such as two-step flow of communication and the importance of weak ties, were verified in several “online” studies, showing that the diffused inf...

Background: Virtual social networks are the most important communication tools in the modern era, which have gained remarkable popularity in various communities. The use of social networks by different age groups has been on the rise, especially among adolescents. Objectives: The present study aimed to assess adaptation to motherhood and its influential factors in the first year postpartum in ...

Online social networks such as Twitter and Facebook have gained tremendous popularity for information exchange. The availability of unprecedented amounts of digital data has accelerated research on information diffusion in online social networks. However, the mechanism of information spreading in online social networks remains elusive due to the complexity of social interactions and rapid chang...

INTRODUCTION Beginning with the late twentieth and early twenty-first century, the Internet was a significant additional tool in the education of teenagers. Later, it takes more and more significant role in educating students and professionals. GOAL The aim of this paper is to investigate, to what extent and how effectively the Internet is used today by students of biomedical faculties in Bos...