Mining various hot discussed topics and corresponding opinions from different groups of people in social media (e.g., Twitter) is very useful. For example, a decision maker in a company wants to know how different groups of people (customers, staff, competitors, etc.) think about their services, facilities, and things happened around. In this paper, we are focusing on the problem of finding opi...

In this study, we present a longitudinal analysis of the evolution of interorganizational disaster coordination networks (IoDCN) in response to natural disasters. There are very few systematic empirical studies which try to quantify the optimal functioning of emerging networks dealing with natural disasters. We suggest that social network analysis is a useful method for exploring this complex p...

Inferring Online Social Networks (OSN) group members may help to evaluate the authenticity of an applicant asking to join a certain group, and secure vulnerable populations online, such as children. We propose machine learning based methods, which associate OSN members’ affiliation with virtual groups based on personal, topological, and group affiliation features. The study applies and evaluate...

The problem of assigning centrality values to nodes and edges in graphs has been widely investigated during last years. Recently, a novel measure of node centrality has been proposed, called j-path centrality index, which is based on the propagation of messages inside a network along paths consisting of at most j edges. On the other hand, the importance of computing the centrality of edges has ...

The growing use of Online Social Networks (OSN) in recent years is attracting the interest of the corporate world, where departments interested in analyzing their contents have been dealing with such technology. There are a number of proposals in the literature illustrating algorithms for social network analysis and sentiment analysis to discover, respectively, patterns of relationships between...

background and purpose: undoubtedly, social networks are being used extensively and are the most important communicative tool among students, especially at higher levels of education. we aimed to investigate the effect of social networks on education and academic learning. methods: this quasi-experimental study was conducted on 32 nursing students who were taking the cancer nursing course at ke...

Background: As social networks are increasingly used, the research published through social networks should be evaluated. Hence, new measures were employed to examine the scientific effectiveness of social networks. The measurements taken from social networks, called Altmetrics, provide an opportunity to evaluate research. Therefore, this study aimed to investigate the presence of indexed artic...

social capital is a new concept that’s been important in management literature in recent years. the importance of this concept has led to increase the researchers’ trends to develop models and diagnose new indexes. the main object of this research is exploring and designing a model to achieve foregoing goal. social capital development in universities and higher education centers as fundamental ...

Technologies and various media have affected social institutions such as family and causeshape changes in relationships within the family. One of the means of communication that are easilyand widely used in the household is Internet. With the entrance of media, especially the Internet tothe family, changes in personal, social, public and private relationships are occurred. The use ofsocial netw...