In online social networks, users create a profile by setting some attributes that help in characterizing the user. We call these profile attributes the keywords of the user. In this work, we focus on social networks based on keywords and study how keywords can be effectively used to model and search in such networks. We make two main contributions in this thesis. First, we study the relationshi...

This paper presents a cyber-archaeology approach to social movement research. The approach overcomes many of the issues of scale and complexity facing social research in the Internet, enabling broad and longitudinal study of the virtual communities supporting social movements. Cultural cyber-artifacts of significance to the social movement are collected and classified using automated techniques...

The dominant American social movement scholarship has become detached from the concerns of actual social movements. But the dramatic growth of social movement activity in recent years, especially the global justice movement, is creating the conditions for an emerging new direction in social movement scholarship which prioritizes the relevance of such work to the movements themselves. A problem ...

Nowadays, we are witnessing various crises and challenges in different areas. The women's crisis is one of the most significant of these crises, and feminism is a solution for solving this crisis, according to the Westerns.The researchers have emphasized the sexual equality perspective(gender equality) to define feminism. The main purpose of the feministsforeliminating all gender differences be...

Social movement scholars have long studied actors’ mobilization into and continued involvement in social movement organizations. A more recent trend in social movement literature concerns cultural activism that takes place primarily outside of social movement organizations. Here I use the vegan movement to explore modes of participation in such diffuse cultural movements. As with many cultural ...

Abstract Political and social scientists have been relying extensively on keywords such as hashtags to mine movement data from media sites, particularly Twitter. Yet, prior work demonstrates that unrepresentative keyword sets can lead flawed research conclusions. Numerous expansion methods proposed increase the comprehensiveness of keywords, but systematic evaluations these lacking. Our paper f...

Background Deficits in motor movement in children with autism spectrum disorder (ASD) have typically been characterized qualitatively by human observers. Although clinicians have noted the importance of atypical head positioning (e.g. social peering and repetitive head banging) when diagnosing children with ASD, a quantitative understanding of head movement in ASD is lacking. Here, we conduct a...