Introducing Social Networks

Network diversity and maritime flows

“…While this is largely due to the absence of a proper mathematical definition of multigraphs (or multiplex graphs), the possibility and implications of having two or more types of links were approached by sociologists since the 1960s (Mitchell, 1969;Burt, 1992;Eve, 2002), notably looking at the effects of having both personal and professional relations within a given organization on individuals' career evolution. Such multiedge relations are thus called two-dimensional in social network analysis in opposition to singlestranded edges or links (Larson and Starr, 1993 ;Degenne and Forsé, 1999); they sometimes allow directionality (multidigraph) and the existence of loops, self-loops, or self-edges (pseudograph). In practice, multigraphs are often analyzed as simple graphs where links have multiple attributes allowing the application of conventional network analytical methods (Wasserman and Faust, 1994;Newman, 2010).…”

The Relationships among Network Centrality, Psychological Well-being, and Intention to Exercise Maintenance in Participants of an Aquatic Exercise Program

“… 근접중심성(closeness centrality): 한 개인이 다른 개인 과 얼마나 가까운지를 말한다 (Degenne & Forse, 1999).  매개중심성(betweenness centrality): 한 개인이 다른 개 인과 네트워크를 구축하는데 '매개자 혹은 중재자(bridge)'의 역할을 하는 정도를 말한다 (Son, 2002).…”

Pattern-Based Cross Media Social Network Analysis for Technology Enhanced Learning in Europe

“…This second way to reduce information complexity is to apply social network analysis (SNA) [10]. Within structural traditions in sociology, SNA is applied to handle large complex relational data sets, covering information about social relations.…”

“…Members have properties which are derived from SNA, describe their positions, and are used to estimate the importance of the members in the network modeled than in the i*-framework. Some important types of centrality are: the Degree centrality, a property which measures in the most straight forward way the member's social capital in the network ; the Closeness centrality CC m , taking into account the closeness of the member m to every other member [4,10,15]; the Betweenness centrality, estimating the possibility of a member to influence the communication of others [4,10,15]. Efficiency is used to detect structural holes in the neighbourhood of a member v. Structural hole is a relationship between two non redundant P r e -t e x t s T r a n s c r i…”