Isabell M. Welpe

Predicting Elections with Twitter: What 140 Characters Reveal about Political Sentiment

Andranik Tumasjan, Timm O. Sprenger, Philipp Sandner et al. · Proceedings of the International AAAI Conference on Web and Social Media · 2010 · 2.7K citations · Full text

German Federal Election, Social Medium Monitoring, Public Opinion +25

Firm networks and firm development: The role of the relational mix

Christian Lechner, Michael Dowling, Isabell M. Welpe · Journal of Business Venturing · 2005 · 582 citations

Firm Development, Management, Business +7

Tweets and Trades: the Information Content of Stock Microblogs

Timm O. Sprenger, Andranik Tumasjan, Philipp Sandner et al. · European Financial Management · 2013 · 500 citations · Full text

Engineering, Social Medium Monitoring, Online Communication +18

Election Forecasts With Twitter

Andranik Tumasjan, Timm O. Sprenger, Philipp Sandner et al. · Social Science Computer Review · 2010 · 445 citations

German Federal Election, Engineering, Political Behavior +17

Emotions and Opportunities: The Interplay of Opportunity Evaluation, Fear, Joy, and Anger as Antecedent of Entrepreneurial Exploitation

Isabell M. Welpe, Matthias Spörrle, Dietmar Grichnik et al. · Entrepreneurship Theory and Practice · 2011 · 413 citations

Behavioral Decision Making, Entrepreneurial Motivation, Entrepreneurship +18