_____________________________________________________________________ *Call for Contributions* *3rd Conference of the EURO Working Group on the Practice of Operations Research* *Berlin, 19-20 March 2020* _____________________________________________________________________ We invite you to contribute to our discussions at the 3rd EWG POR conference. Our focus will be OR projects that have met with difficulties during their implementation, including •particularly tricky or unusual technical requirements that had to be addressed during the development phase; or •issues related to the use or acceptance by non OR expert end users. Contributions that discuss experiences with the management of change in operations due to the introduction of an optimization or analytics application in an organization are of particular interest. *Submission deadline:**10 December, 2019* -- Este e-mail foi verificado em termos de vírus pelo AVG. http://www.avg.com