2016, Decomposing Efficiency and Returns to Scale in Two-Stage Network DEA / The 9th International Conference of Iranian Operations Research Society, [Session Chair]

2016, Data Envelopment Analysis International Conference 2016 (DEAIC2016): Methodology Advances and Applications in Governance and Management, [Session Chair]

2012, Decomposition of Efficiency and Scale Elasticity in Two-stage Network DEA / The Data Envelopment Analysis (DEA) Symposium, [Session Chair]

2011, Measuring Scale Elasticity in Production in Two-stage Network DEA / The European Workshop on Efficiency and Productivity Analysis (EWEPA) Conference, [Session Chair]

2009, Measuring Inter-temporal efficiency and returns to Scale in DEA: An Application to Indian Banking Industry / The Spring National Conference of Operations Research Society of Japan, [Session Chair]

2009, Measuring Inter-temporal efficiency and returns to Scale in DEA: An Application to Indian Banking Industry / The Operations Research Society of Japan (ORSJ Seminar Series / Data Envelopment Analysis, [Session Chair]

2008, The Nonparametric Approach to Measuring Scale Economies / The Department of Economics Seminar Series, [Session Chair]

2008, The Nonparametric Approach to Measuring Scale Economies / The Department Seminar Series, [Session Chair]

2007, Radial and Non-radial Decompositions of Profit Change: An Application / The Data Envelopment Analysis (DEA) Symposium, [Session Chair]

2006, Decomposing Capacity Utilization in Data Envelopment Analysis: An Application to Banks in India / The Operations Research Society of Japan (ORSJ Seminar Series, [Session Chair]

2004, Indivisibilities and Economies of Scope in Data Envelopment Analysis / The Spring National Conference of the Operations Reesarch Society of Japan, [Session Chair]

2004, Scale, Scope and Capacity Utilization in Data Envelopment Analysis / The Operations Research Society of Japan (ORSJ Seminar Series, [Session Chair]

2002, Scale, Indivisibilities and Production Function in Data Envelopment Analysis / The Asia Pacific Operations Research Society (APORS) Conference, [Session Chair]

2002, Scale, Indivisibilities and Production Function in Data Envelopment Analysis / The Operations Research Society of Japan (ORSJ Seminar Series, [Session Chair]

2000, Radial and Non-radial Measures of Technical Efficiency in DEA: An Empirical Comparison / Research Seninar on Measurement of Efficiency and Productivity, [Session Chair]