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Domestic PC production in the Soviet Baltic States 1977-1992Kanger, Laur January 2013 (has links)
The thesis argues for the necessity and value of a two-way interaction between high-level abstractions and rich historical narratives mediated by middle-range theories. The basic assumptions of critical realism are used to derive a socio-technical metatheory which, in turn, structures the synthesis of specific substantive theories. The conceptual tools provided by the Multi-Level Perspective, Analytical Sociology and (Technological) Systems of Innovation frameworks guide the study of the cases. The empirical core of the thesis consists of detailed histories of the birth, development and decay of ten different personal computer production attempts in the Soviet Baltic states roughly between 1977 and 1992. In order to generalize from the historical narratives a novel analytical technique is developed and employed. The resulting middle-range theorization locates the mechanisms and patterns of the evolution of these cases on three different levels of aggregation: intra-case, inter-case and system-level. Finally, the study makes analytical contributions to the socio-technical metatheory and provides philosophical justifications based on actual research practice for retaining the realist position.
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Mechanisms of Social Vulnerability to Environmental HazardsJanuary 2019 (has links)
abstract: Environmental hazards and disaster researchers have demonstrated strong associations between sociodemographic indicators, such as age and socio-economic status (SES), and hazard exposures and health outcomes for individuals and in certain communities. At the same time, behavioral health and risk communications research has examined how individual psychology influences adaptive strategies and behaviors in the face of hazards. However, at present, we do not understand the explanatory mechanisms that explain relationships between larger scale social structure, individual psychology, and specific behaviors that may attenuate or amplify risk. Extreme heat presents growing risks in a rapidly warming and urbanizing world. This dissertation examines the social and behavioral mechanisms that may explain inequitable health outcomes from exposure to concurrent extreme heat and electrical power failure in Phoenix, AZ and extreme heat in Detroit, MI. Exploratory analysis of 163 surveys in Phoenix, AZ showed that age, gender, and respondent’s racialized group identity did not relate to thermal discomfort and self-reported heat illness, which were only predicted by SES (StdB = -0.52, p < 0.01). Of the explanatory mechanisms tested in the study, only relative air conditioning intensity and thermal discomfort explained self-reported heat illness. Thermal discomfort was tested as both a mechanism and outcome measure. Content analysis of 40 semi-structured interviews in Phoenix, AZ revealed that social vulnerability was associated with an increase in perceived hazard severity (StdB = 0.44, p < 0.01), a decrease in perceived adaptation efficacy (StdB = -0.38, p = 0.02), and an indirect increase (through adaptive efficacy) in maladaptive intentions (StdB = 0.18, p = 0.01). Structural equation modeling of 244 surveys in Phoenix, AZ and Detroit, MI revealed that relationships between previous heat illness experience, perceived heat risk, and adaptive intentions were significantly moderated by adaptive capacity: high adaptive capacity households were more likely to undertake adaptive behaviors, and those decisions were more heavily influenced by risk perceptions and previous experiences. However, high adaptive capacity households had lower risk perceptions and fewer heat illness experiences than low adaptive capacity households. A better understanding of the mechanisms that produce social vulnerability can facilitate more salient risk messaging and more targeted public health interventions. For example, public health risk messaging that provides information on the efficacy of specific adaptations may be more likely to motivate self-protective action, and ultimately protect populations. / Dissertation/Thesis / Doctoral Dissertation Environmental Social Science 2019
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Kriminální sítě: aktéři, mechanismy a struktury / Criminal networks: actors, mechanisms, and structuresDiviák, Tomáš January 2020 (has links)
Social network analysis is a fruitful approach to the study of relations and interaction between actors involved in organized crime. This dissertation utilizes network perspective to study several cases of organized criminal groups. It is divided into eight chapters. The first introductory chapter is followed by a chapter reviewing the most important network concepts, measures, and models, and their application in the study of organized crime. The four subsequent chapters are empirical studies. The third chapter is a case study of a political corruption network, known as the Rath affair. The study shows that the network consists of different, sometimes overlapping, relations (multiplexity), namely collaboration, resource transfer, and pre-existing ties. The network shows a clear core-periphery structure with politicians forming a dense core and businesspeople occupying periphery. The following chapter studies a case of counterfeit alcohol distribution network, known as the methanol affair. The network structure is composed of two subgroups bridged by one tie, permitting relatively efficient distribution of the beverages. Furthermore, statistical models point out the importance of triadic closure and pre-existing ties for the formation of ties in the network. The fifth chapter tests an influential theory in...
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Struktury veřejné komunikace na zpravodajském serveru / Structures of Public Communication at the News ServerPilnáček, Matouš January 2016 (has links)
This thesis has an aim to bring theoretical and empirical knowledge, which can be used to improve quality of multi-agent based modelling of public opinion. In the theoretical part is introduced the analytical sociology as methodological basis and the theory of the public opinion process as substantive basis. Based on these theories is defined the aim of the empirical work: explore the stability of communication structures leading to emergence of mutual awareness of actors in the public debate. For the research are used news comments and its rating by other users from the news server iDNES.cz. The data are analyzed using social network analysis. It is revealed that a number of characteristics is applicable to multi-agent model. At the same time work brings interesting findings about the internet discussion and public communication. The main empirical finding is that despite large turn-over of discussing individuals, communication structures remain stable over time.
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