Browsing by Subject "Network analysis"

Now showing 1 - 3 of 3

Inter-firm R&D networks in the global pharmaceutical biotechnology industry during 1985?1998 : a conceptual and empirical analysis
(2011) Krogmann, Yin; Schwalbe, Ulrich
This paper analyses a large database on inter-firm R&D cooperation formed in the pharmaceutical biotechnology industry during the period 1985?1998. The results indicate that network size largely grows, whereas the density of the network declines during the periods. In the network analysis that emphasizes individual structural positions, the empirical results show that small biotechnological companies had a crucial bridging role for the large pharmaceutical firms in the second half of the 1980s. In the 1990s, the bridge role of biotechnology companies became less important and established pharmaceutical companies developed into dominant start players with many collaborators while holding central roles in the research network. The current analysis also shows that degree-based and betweenness-based network centralization are both low implying that the overall positional advantages are relatively equally distributed in the inter-firm R&D network of the pharmaceutical biotechnology industry.
Measuring social capital and innovation in poor agricultural communities : the case of Cháparra, Peru
(2011) Arata, Atilio; Hartmann, Dominik
In the last decades substantive advance has been made in the measurement and understanding of frontier innovation in highly industrialized settings. However, little research focused on the process of learning and the introduction of novelties in smallholder farming of poor agricultural communities. Considering that 1.5 billion people in developing countries live in such smallholder households this is an essential shortcoming. In addressing three crucial questions about the measurement and promotion of endogenous local development this paper contributes to close this research gap. The three questions are: a) how can we measure social capital and innovation in poor agricultural communities, b) what is the impact of external agents on local structures and c) what are the relations between the social capital and the innovative performance of the farmer. In a first step a comprehensive questionnaire with 89 questions on diverse dimensions of social capital and innovation has been elaborated and applied to the agricultural valley of Cháparra in the South of Peru. The results allow for an indepth analysis of the capabilities, network position and innovative behavior of the farmers. In a second step, we apply social network analysis techniques to analyze the role and position of the relevant actors in the local as well as in the external technical information networks with a special focus on the influence of an external NGO. The analysis reveals a deep structural impact of the NGO and significant correlations between the network position of the farmers and their innovative performance. Three crucial issues for research on smallholder innovation are identified. First, diverse dimensions of social capital and innovation have to be differentiated when studying endogenous development. Second, it has to be assessed to which degree the modification of the existing social structures by external agents can be harmful or beneficial. Third, social network analysis can help us to gain a better understanding of the complex relations between social capital and innovation and how these can contribute to foster sustainable development projects.
Meinungsführer in Online-Diskussionsforen
(2016) Scheiko, Ljewin; Schenk, Michael
The study deals with opinion leaders in internet forums. Questions and hypotheses of classical opinion leader studies are transferred and adapted to the specific characteristics of the communication process in internet forums. Due to the width of the field of research, the study is divided into three research areas, each with a specific objective. In the first research area general findings on users of internet forums are obtained. In the second research area opinion leaders are profiled in detail and the relevance of shared information in internet forums is evaluated as well as the degree of influence of opinion leaders on other users is measured. In the third research area, the network structure of internet forums is analyzed and the network positions of opinion leaders are identified. To meet the different objectives optimally, a complex study design, consisting of an Internet-representative online survey and a triangulation of online survey and network analysis, is used.