Less than a month before KOI 2016! The Preliminary Program of KOI 2016 conference is announced. This year we have a record number of participants (237) from 25 countries, 119 contributed paper, 5 invited lectures, 2 keynote lectures in Special Section on IPM and Related Methods. Join us at KOI 2016 and benefit from outstanding speakers, such as Jakob Krarup (University of Kopenhagen), Andrew Barron (Yale University), Francisco Martinez Alvarez (Pablo de Olavide University Seville), Marko Bohanec (Jozef Stefan Institute Ljubljana), Tibor Illes (University of Technology and Economics Budapest), Florian Potra (University of Maryland), and Kees Roos (Technical University of Delft). The Round Table on OR in Education will also be organized during the conference chaired by Kristina Soric with Hans Ittman (University of Johannesburg) as a guest speaker. See web page of the conference for more info.