The following international scientific events and conferences have opened their registrations and are calling for paper submissions: The R User Conference 2011 will take place at the University of Warwick , Coventry on 16-18 August 2011. The conference is organized by the Department of Statistics, University of Warwick and supported by the R Foundation for Statistical Computing . Prior to the conference, on Monday 15 August 2011, tutorials will be offered at the conference website . Each tutorial has a length of 3 hours and takes place either in the morning or afternoon. Early registration & abstracts submission deadline: 1st April 2011. Registration deadline: 27th May 2011 The 2011 IASC European conference is organized by the International Association for the Study of the Commons (IASC) . This year’s conference will be hosted by the Agricultural University of Plovdiv , Bulgaria on 14-18 September 2011 under the topic “Shared Resources in a Rapidly Changing World”. Prominent keynote speakers, including Jouni Paavola, Konrad Hagedorn, Marco Janssen, Ruth Meinzen-Dick, Susan Buck and Tine de Moore, have agreed to participate.