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An Autonomous Institution, Under the Ministry of Education, Government of India

Asok Kumar Nanda

Dept: Mathematics and Statistics (DMS)
E-mail: asok [at]
Personal homepage: Click Here

Research Interest:

1. The lifetime, say X, of a unit (that could be a living organism, a mechanical component or a system of components) is a random variable. If Y denotes the lifetime of another unit, then the comparison of X and Y is a problem of interest in Reliability, Biometry, Engineering, Econometrics, Actuarial Sciences and many other fields. It may happen that even if X is, on the average, smaller than Y, the actual realization of X may be larger than that of Y. The study of this type of question is my primary interest.2. Another main interest of mine is the study of different ways of formalizing the idea that one random variable is more/less variable than the other random variable.3. Every system (it could be a car, a machine or something else) has some maintenance cost. After some time, although the system is functioning, its maintenance cost goes up in such a way that it becomes economical to replace the system. To find an optimal time of replacement of the system along with different properties of maintenance policies is another interest of mine.

Academic Background:

  1. PhD (Reliability), Panjab University, 1998


  1. Professor, IISER Kolkata ( - )
  2. Professor, IISER Kolkata (2013 - 2024)
  3. Associate Professor, IISER Kolkata (2008 - 2013)
  4. Assistant Professor, Indian Institute of Technology Kharagpur (2000 - 2008)
  5. Lecturer, Panjab University (1992 - 2000)

Selected Publications:

  1. Chowdhury, Shovan and Nanda, Asok K.. 2018."A New Lifetime Distribution with Applications in Inventory and Insurance." Communications in Statistics-Theory and Methods, 35, 527-544
  2. Hazra, Nil Kamal; Kuiti, Mithu Rani; Finkelstein, Maxim and Nanda, Asok K. 2017."On Stochastic Comparisons of Maximum Order Statistics from the Location-Scale family of Distributions." Journal of Multivariate Analysis, 160, 31-41
  3. Hazra, Nil Kamal and Nanda, Asok K. 2016."Stochastic Comparisons Between Used Systems and Systems Made by Used Components." IEEE Transactions on Reliability, 65, 751-762
  4. Kundu, Amarjit; Chowdhury, Shovan; Nanda, Asok K. and Hazra, Nil Kamal. 2016."Some Results on Majorization and Their Applications." Journal of Computational and Applied Mathematics, 301, 161-177
  5. Al-Mutairi, Dhaifalla K.; Nanda, Asok K. and Soland, Richard M.. 2011."Monotonicity and Comparability in Ballistic Missile Defense Systems." Journal of Statistical Planning and Inference, 141, 2191-2200

All Publications: Click Here