Πλοήγηση ανά Συγγραφέα "Vagianos, Dimitrios"
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Τεκμήριο Authority Groups among Popular Wine Blogs(2013-05-03) Vrana, Vasiliki; Zafiropoulos, Kostas; Vagianos, DimitriosBlogging in the wine industry has become widespread. This article explores linkage patterns of the Top 100 Wine Blogs. The analysis aims at finding the central wine-blog groups among them. Central blog groups are located using blog inter-linkages through blogrolls. Because of the methodology used, they may be considered to be authority blogs, in terms of search engine optimization. They serve as focal points where interesting conversation and exchange of information takes place. The article describes the features of these blogs in an attempt to explore the characteristics that distinguish these blogs and make them appreciated and worth visiting.Τεκμήριο Bloggers’ Community Characteristics and Influence within Greek Political Blogosphere(2012) Zafiropoulos, Kostas; Vrana, Vasiliki; Vagianos, DimitriosThis paper investigates the properties of central or core political blogs. They can be located as clusters of blogs whose members have many incoming links. Other blogs form clouds around them in the sense that they link the core blogs. A case study records Greek political blogs and their incoming links reported through their blogrolls. The adjacency matrix from the blogs’ social network is analyzed and clusters are located. Three of them, those with the larger numbers of incoming links, may be considered to be central. Next, four measures of influence are used to test the influence of the central blogs. The findings suggest that there are many kinds of central blogs, influential and non-influential, and high influence does not always involve high hyperlinking.Τεκμήριο Discussion of eParticipation topics in greek political blogs(2011-05) Zafiropoulos, Kostas; Vagianos, Dimitrios; Vrana, VasilikiBlogs are an effective way to participate in politics and have the potential to support eParticipation. Political discourse is formed through hypertext links, blogrolls, posts and opinionated commentary, calls to political action, and requests for feedback. The paper applies a methodology to locate focal conversational points within the blogosphere. These take shape as central clusters of blogs having many incoming links. Next, the paper investigates the communication patterns among these focal points and associates the findings to the content of blogs participating in these focal points. Through statistical analysis and content analysis it is shown that linkage patterns among focal point blogs are reproduced to content similarities.