Two ENGINE Centre staff members: Przemysław Kazienko and Marcin Kulisiewicz, during their research stay at University of California, Davis supported by the RENOIR project presented their recent research results to the international research group led by Prof. Raissa D’Souza. Prof. Przemysław Kazienko gave a talk on “CogSNet: a cognition-driven temporal social network” on Fabruary 1, 2018 and on “Priority Attachment – A Universal Mechanism of Network Formation” on February 15, 2018. Marcin Kulisiewicz, in turn, talked about “Entropy of temporal networks – new ideas, recent findings,  and potential applications” on February 15, 2018. All presentations were followed by intensive discussion resulting in new ideas and interesting conclusions.