Jana Ebermann
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Ebermann
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Jana
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  • Publication
    Influential Factors of Recommendation Behaviour in Social Network Sites : An Empirical Analysis
    (Aalto University, School of Economics, 2011-06-09)
    Ebermann, Jana
    ;
    Stanoevska-Slabeva, Katarina
    ;
    Wozniak, Thomas
    ;
    Tuunainen, Virpi
    ;
    Nandhakumar, Joe
    ;
    Rossi, Matti
    ;
    Soliman, W.
    This paper analyzes influential factors of recommendation behaviour in social network sites (SNSs). Extant research on both SNSs and electronic word of mouth (eWOM) has given insufficient attention to SNSs as a potential eWOM channel. Considering the specificities of SNSs, this paper distinguishes implicit and explicit recommendation behaviour. Drawing upon research on eWOM, SNSs, and knowledge exchange, influential factors of implicit and explicit recommendation behaviour are identified. A theoretical model explaining why SNS users (do not) engage in implicit and explicit recommendation behaviour is developed. Structural equation modeling (SEM) is used for hypothesis testing. Data was collected via an online survey from 832 SNS users. The empirical results show a positive impact of reciprocity on both implicit and explicit recommendation behaviour, a negative impact of fear of producing spam on implicit recommendation behaviour, and a positive impact of both implicit recommendation behaviour and the perceived value of the recommended product on explicit recommendation behaviour
    Type: conference paper
    Volume: Paper 259
    URL: http://aisel.aisnet.org/ecis2011/259/
    URI: https://www.alexandria.unisg.ch/handle/20.500.14171/94008
  • Publication
    Do End Users Accept End User Development?
    (AIS Association for Information Systems, 2011-07-07)
    Giessmann, Andrea
    ;
    Ebermann, Jana
    ;
    Stanoevska-Slabeva, Katarina
    Do end-users accept end-user development by using enterprise mashups? Using the technology acceptance model, this research investigates the acceptance of the FAST platform, which enables endusers to build their own application by simply drag and drop graphical building blocks onto a canvas. An evaluation workshop of 159 individuals in various countries and locations found strong support of the idea. It was revealed that perceived usefulness strongly affected the attitude towards using enterprise mashups for end-user development. In turn, perceived ease of use did not. With respect to the developed mashup platform it was found that the available content within a mashup platform is the main influencing factor on the acceptance of end-user development by using mashups.
    Type: conference paper
    Volume: Paper 67
    URL: http://aisel.aisnet.org/pacis2011/67/
    URI: https://www.alexandria.unisg.ch/handle/20.500.14171/93839
  • Publication
    A Longitudinal Social Network Analysis of German Politicians' Twitter Accounts
    (ISNA, 2010-07-03)
    Plotkowiak, Thomas
    ;
    Ebermann, Jana
    ;
    Stanoevska-Slabeva, Katarina
    Politicians running for an office in the German Bundestag election in 2009 for the first time massively have taken the liberty of getting involved with social networking and becoming their own "reputational entrepreneurs" in social media (Fine, 1996). While reputation in social networks does not emerge from good work directly so much as stories about the work, the key to building reputation is to get people in closed networks talking about oneself (Burt, 1999, Gladwell 2000). The created reputation and its stability in such a network is clearly not independent of network closure (Burt, 2000) mechanisms, which reduce the risk of trust among people and carry on reputation from one year to the next. In order investigate those mechanisms in context with the German Bundestag election, we took daily snapshots of the social network formed from over 650 politicians on twitter in a timeframe of 4 weeks. By tracking almost 10.000 connections of over 650 twitter accounts and monitoring over 240.000 tweets we were able to investigate how and with whom politicians established connections and which topics they discussed. Using statistical social network analysis methods (Snijders et Al., 2007, Carley et Al. 2009) our results show that there is indication for closure among members of their own party. They majority of connections are established between members of the same party while connections between different parties are significantly less represented. The analysis of the exchanged tweets shows that conversation is directed towards members of the same party and mentions of opposite parties can often be found.
    Type: conference paper
    URI: https://www.alexandria.unisg.ch/handle/20.500.14171/96223
  • Publication
    Towards a Concept for Inclusion of Social Network Information as Context Information
    (IEEE, 2009-10-12)
    Stanoevska-Slabeva, Katarina
    ;
    Wozniak, Thomas
    ;
    Hoffend, Isabella
    ;
    Ebermann, Jana
    In this paper, a concept for usage of social network information as context information is proposed. Social network information (or information from social network sites) is considered as a specific type of a user's social context. We start with the potentially most widely accepted definition of context and then examine selected categorizations of context types, particularly focusing on social context. With an online survey we analyze the current usage pattern of social network site (SNS) and how the information available there is perceived by users. The results of the survey and subsequent analysis suggest that information about products and services from one's social network contacts is perceived by users as trustworthy and relevant. Finally, based on the empirical results, a concept for inclusion of social network information into context information is proposed.
    Type: conference paper
    DOI: 10.1109/ICUMT.2009.5345329
    URI: https://www.alexandria.unisg.ch/handle/20.500.14171/75455
    Scopus© Citations 4