this paper aimed to investigate the relationship between components of social capital (security, trust, social norms, social networks and participation in social activities) and physical activity participation among the adolescent students in yazd city. the statistical population of the study included adolescent students (14-17 years old) from yazd city. 382 adolescents were randomly selected t...

according to the logic of 'weak ties' partnership organized through links with a wider range of people causes of social capital among a group of citizens will increase. so it seems, increasing participation among people, ultimately leading to increased cooperative activities among them. while the impact of social networks on political relations, much attention has been. there is very ...

one of the most important issues related to knowledge discovery is the field of comment mining. opinion mining is a tool through which the opinions of people who comment about a specific issue can be evaluated in order to achieve some interesting results. this is a subset of data mining. opinion mining can be improved using the data mining algorithms. one of the important parts of opinion minin...

Nowadays, the popularity of social networks as marketing tools has brought a deal of attention to social networks analysis (SNA). One of the well-known Problems in this field is influence maximization problems which related to flow of information within networks. Although, the problem have been considered by many researchers, the concept behind of this problem has been used less in business con...

we livein the era that  are seeing the growing use of social networks among family members especially youth. this study was conducted to investigate relationship between family function and use of social networks among high school students.the type of this study was correlational and conducted in 2015-16. the study population included all high school students in the second period of qazvin. 175...