During the conference Joint Rough Set Symposium (JRS’2012), Chengdu, China, 17-20 August 2012 the team consisting of Łukasz Pałkowski, Jerzy Błaszczyński, Jerzy Krysiński, Roman Słowiński, Andrzej Skrzypczak, Jan Błaszczak, Eugenia Gospodarek, Joanna Wróblewska received the best paper award for the article “Application of Rough Set Theory in Prediction of Antimicrobial Activity of Bis-Quaternary Ammonium Chlorides”.