Humboldt-Universität zu Berlin | Wirtschaftswissenschaftliche Fakultät | High Dimensional Nonstationary Time Series | About us | News Feed | News 2015 | Conference: Presentation at CEQURA Conference Conference: Presentation at CEQURA Conference 02.10.2015. Lei Fang, PhD student, attended the CEQURA Conference and presented her paper on “A Mortality Model for Multi-populations: A Semi Parametric Approach”.