 They co-operate for a specific time, perform cross sectional tasks, care about scientific surveys (such as diploma thesis, dissertations) and release important pulses for the institute.The DIW is also part of the Leibniz Association, ("Leibniz-Gemeinschaft"), a collection of non-university research institutes in Germany.Along with five other leading institutes, the DIW publishes a joint report on the state of the German economy, the Gemeinschaftsdiagnose (Joint Economic Forecast).