Keisuke Fujino, Akinori Ihara, Kiyoshi Honda, Hironori Washizaki and Kenichi Matsumoto, 6th International Workshop on Empirical Software Engineering in Practice (IWESEP 2014), Best Poster Award, Osaka, Japan, November 12-13, 2014 (for “Toward Monitoring Bugs-fixing Process after the Releases in Open Source Software”)