National Repository of Grey Literature 5 records found  Search took 0.00 seconds. 
Measuring the Spiral of Silence Using Social Network Analysis
Vomáčka, Aleš ; Diviák, Tomáš (advisor) ; Vinopal, Jiří (referee)
The goal of the presented bachelor thesis is the application of social network analysis (SNA) to the measurement of the spiral of silence. First part of thesis consists of theoretical background of the spiral of silence, including the description of conventional ways of measurement. Second part provides basic introduction to social network analysis and its application to concepts related to the spiral of silence. Last part describes existing works attempting to measure the spiral of silence using SNA and presents a new way of measurement, demonstrated by using data from discussion section of Czech news site Idnes.cz. Key words: communication, public opinion social network analysis, spiral of silence, SNA
Information spread in online communities: Example of the Czech foodie community
Němečková, Hana ; Souček, Jiří (advisor) ; Diviák, Tomáš (referee)
This master's diploma thesis focuses on the dissemination of information in the context of the Czech community of so-called foodies (people who like good food and are constantly looking for new experiences in this field). The theoretical part outlines the development of online communities environments, from web forums to social media. It also examines the possibility of applying Katz and Lazarsfeld's model of the two-step flow of communication in the online environment. We also explain the features of online food communication and present widespread social media foodie platforms, including the Czech app Scuk. The research part of the thesis uses the social network analysis method to identify opinion leaders of this online community in the environment of Twitter, Instagram and Scuk and examines how the information spread and the form of this community changes with regards to the particular online environment in question. The thesis also includes qualitative research on the impact of the online information spread on the offline environment - more specifically, on sales, visit rate and reputation of selected Prague restaurants.
Diffusion of innovations in the social network of Czech foodbloggers
Hyclová, Barbora ; Lupač, Petr (advisor) ; Diviák, Tomáš (referee)
This thesis deals with the diffusion of innovations theory in current communication conditions. The first part of the thesis discusses the potential of changes in diffusion of innovations theory after transformation of society's communication structure enacted by widespread diffusion of the Internet and various social software. The theoretical framework is then utilized in analysis of the Czech food blogging social network. The first research question of this analysis is to determine, how the network, socio-demographic and attitudinal characteristics of food bloggers influence the diffusion of selected innovation in blogging, which is represented by vlogging. The second research question is concerned with the type of diffusion system this networks corresponds to. The combination of social network analysis and quantitative online survey among food bloggers. One of the most interesting findings is the inverse proportion of mutual degree to the video blogging use. The number of mutual connections in the network (degree) and size of the residential area of a food blogger were found to be the noticable individual characteristics influencing adoption of innovation. In terms of the type of diffusion system the network rather corresponds to decentralized diffusion system, that may, however, be threatened...
Webs of crime: Corruption in the perspective of social network analysis
Diviák, Tomáš ; Podaná, Zuzana (advisor) ; Buriánek, Jiří (referee)
In this thesis, I attempt to apply the network perspective to the study of corruption. First, I deal with current state of theory and research on corruption, which I find to be ignoring relations and interactions among offenders themselves. Then I review literature in the field of covert and criminal networks. The theoretical part of this thesis ends with brief descriptions of two major cases of political corruption in the Czech Republic - so called Nagy case and Rath case. In the methodological part, I introduce basic concepts of social network analysis as well as methods for positional analysis, especially the blockmodelling. In my research, I deal with exploratory analysis of both the aforementioned networks. Using proxy data, I analyse cohesion, centralization, centrality measures and cliques in these networks. Then I use conventional blockmodeling to search for roles and positions within these networks. My results suggest that both networks are dense and centralized with overlapping cliques contrary to other covert networks possibly accounting for their eventual disruption and failure. Positional analysis using varius methods such as CONCOR or different types of cluster analysis reveals a structure resembling the core-periphery model, which is supported by measuring coreness and finding a good...
The global cities relationships from social network analysis perspective
Diviák, Tomáš ; Lupač, Petr (advisor) ; Šubrt, Jiří (referee)
This thesis is concerned with global cities as key actors in the process of globalization. Emphasis is put on network between these cities created by their mutual relations. In three parts constituting this thesis, there are at first presented relevant theoretic aspects of global cities and their networks: definitions and rankings of global cities and then Smiths' and Timberlake's typology of flows between global cities. In the methodological part, social network analysis is presented as a dynamicaly developing methodological tool as well as fruitful perspective for description of relations between global cities. In the last part, networks of social and political flows between cities included in the AT Kearney ranking are analyzed. Centrality measures and whole network characteristics are counted for both network and subgroups are identyfied. Based on the analysis it could be said that the most important and the most powerful cities are Tokyo, Paris and Washington, D. C. Powered by TCPDF (www.tcpdf.org)

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