Volume 18, Number 6 - 3 June 2013

Table of Contents

Effect of external events on newcomer participation in open source online communities
Raktim Mitra, Aditya Johri, Oded Nov
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Assigning Wikipedia editing: Triangulation toward understanding university student engagement
Amy Roth, Rochelle Davis, Brian Carver
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Snowing, freezing … tweeting? Organizational Twitter use during crisis
Anders Olof Larsson, Pär J Ågerfalk
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Access, accommodation, and science: Knowledge in an “open” world
Ashley Rose Kelly, Meagan Kittle Autry
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The hammer of Hawking: The impact of celebrity scientists, the intent of extraterrestrials and the public perception of astrobiology
Rich Gazan
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Propagation of unintentionally shared information and online tracking
Rath Kanha Sar, Yeslam Al-Saggaf
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Economics of scholarly communication in transition
Heather Morrison
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The networked life of professional encyclopaedias: Quantification, tradition, and trustworthiness
Olof Sundin, Jutta Haider
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