Dr. Darvinder Kumar is an Associate Professor in the Department of Statistics, PGDAV College, University of Delhi, and has been teaching various courses of Statistics for the last 15 years. He has completed his M.Sc (Statistics), Ph.D, PDF from Kurukshetra University, Kurukshetra and PGDBA in Finance from Guru Jambheshwar University of Science and Technology. He was also awarded the Post-Doctoral Fellowship from University Grants Commission. His areas of research are “Queueing Theory, Queueing Models with Catastrophes and Environmental Change and Computer networks”. He has published fourteen research papers in national/ international journals of repute and presented more than fifteen research papers in national/ international conferences. He is a life member of the societies ISPS, FIM, IISA, ORSI, ISMS and ISAS. He was a member of committee of undergraduate courses (B.Sc Mathematical Science) from 2011-2013, Member of Departmental Research Committee (2021-2023) and M.Phil. Committee (2021-2024) at the Department of Statistics, University of Delhi. He has been also working as Part- time Coordinator-cum-Academic Counselor of IGNOU study centre-07174 at the College.