• Ordering Properties of Largest Order Statistics from Heterogeneous Samples with Applications, Northwest Normal University, July. 2011
 • On Sample Ranges from Heterogeneous Samples, International Workshop on Stochastic Orders in Reliability and Risk Management, Xiamen University, Jun. 2011
 • On Maximum Order Statistics from Heterogeneous Random Variables, The Seventh International Conference on Mathematical Methods in Reliability (MMR2011) - Theory, Methods,and Applications. Beijing Institute of Technology, Jun. 2011
 • Ordering Properties of Convolutions of Heterogeneous Exponential and Geometric Random Variables, Nankai University, Oct. 2010
 • Hazard Rate Ordering of Heterogeneous Geometric Convolutions, McMaster University, Jul.2009
 • Equivalent Characterization of Likelihood Ratio Order of the Second Order Statistic from Heterogeneously Exponential Random Variables, McMaster University, Jul. 2008
 • Stochastic Orders of Spacings from Two Samples of Exponential Distributions, Lanzhou University,Nov. 2006
 • Some Aging Properties of the Residual Life of k-out-of-n Systems, Xuzhou Normal University,Oct. 2006
 • Generalized Order Statistics and Spacings, Lanzhou University, Nov. 2005