you are here > Home > Academic > Departments > Statistics > Faculty Members > Dr P.G.Sankaran

Dr P.G.Sankaran

Untitled Document
 

P.G.SANKARAN, M.Sc, PhD
 

Associate Professor
Department of Statistics
Cochin University of Science and Technology
Cochin 682 022, Kerala, INDIA.

Phone: 91-484-2575893(Office), 91-484-2862477(Direct), 9847348528(Mobile)
E-mail: pgsankaran@cusat.ac.in, sankaranpg@yahoo.com
 

Areas of Specialization

Survival Analysis, Reliability Analysis, Distribution Theory
  Education

M.Sc (Statistics), Cochin University of Science and Technology, Kerala, India, 1987
PhD, Cochin University of Science and Technology, Kerala, India, 1992
Positions holding
  Associate Professor, Department of Statistics, Cochin University of Science and Technology (since 10-11-2007)
  Director, Centre for Population Studies, Cochin University of Science and Technology (since 2002)
Positions held
  Reader, Department of Statistics, Cochin University of Science and Technology (between 10-11-2004 to 10-11-2007)
  Lecturer (Senior Scale), Department of Statistics, Cochin University of Science and Technology (between 10-11-1999 to 9-11-2004)
  Lecturer, Department of Statistics, Cochin University of Science and Technology (between 26-9-1997 to 9-11-1999)
  Lecturer in Statistics, Marthoma College for Women, Perumbavoor (between 10-11-1995 to 25-9-1997)
  Statistician, Indian Cardamom Research Institute, Spices Board, Cochin (between 27-1-1993 to 9-11-1995)
Visits/Fellowships
  Visiting Scientist, Indian Statistical Institute, New Delhi, June 2008
  Visiting Scientist, Indian Statistical Institute, Calcutta, May, 2004
  Visiting Scientist, University of Waterloo, Canada, May-June 2003
  Post Doctoral Fellow, University of Dalhousie, Canada, April-August, 1997
  BOYSCAST Fellowship of DST, Govt. of India, University of Dalhousie, Canada, March-September, 2000
  Lecturer, Dalhousie University, Canada, May 2000
  Elected Member of International Statistical Institute, Netherlands
Memberships of Professional/Academic Bodies
  Member Institute of Mathematical Statistics, U.S.A
  Board of Studies in Statistics, CUSAT
  Board of Studies in Statistics, Kannur University
  Editorial Board, Journal of Kerala Statistical Association
  Reviewer Journal of Statistical Planning and Inference, Netherlands
  Statistics
  American Mathematical Review, USA
  Communication in Statistics – Theory and Methods
  Journal of the Indian Statistical Association
 
Title of the Thesis
Characterization of Pearson family of distributions using Reliability concepts

Ph.D. Students guided successfully
1 Sindhu, T.K: A generalized Pearson system useful in reliability analysis, 2005.
2 Ansa Alphonsa Antony: Non parametic estimation of survivor function in bivariate competing risk models, 2006.
3 Maya T. Nair: On finite mixtures of Pareto and beta distributions, 2007.
4 Sreeja V.N.: Regression models for bivariate survival data, 2008.
5 Gleeja V.L.: Modeling and analysis of bivariate lifetime data using reversed hazard rates, 2008.
Publications
  Research papers in refereed journals : 73
  Conference papers : 38
  Books : 02
  Technical reports : 02
Awards and Fellowships
1 CSIR Senior Research Fellowship, 1991-1992
2 BOYSCAST Fellow of DST, Govt. of India, 2000
3 Elected member of International Statistical Institute, The Netherlands,
4 Young Researcher Award, International Indian Statistical Association, 2010.
Conferences/Workshops organized
1 Workshop on ISO 2000, 2001, Cochin.
2 Workshop on Six Sigma Limits, 2002, Cochin.
3 International Conference on Statistics in Industry and Business, 2003, Cochin.
4 Workshop on Women and Health Literacy in Kerala, 2006, Cochin.
5 IISA Joint Statistical Meeting and International Conference on Statistics, Probability and related areas, 2007, Cochin.
6 Workshop on Health and Wellness, 2007, Cochin.
List of Research Papers Published
1 N. Unnikrishnan Nair and P.G.Sankaran: Characterization of the Pearson family of distributions, IEEE Transactions on Reliability, 1991, 22, 75-77.
2 P.G.Sankaran and N.Unnikrishnan Nair: Bivariate vitality functions, Proceedings of the Symposium on Distributions Theory, 1991, 61-71.
3 P.G.Sankaran and N.Unnikrishnan Nair: Characterizations by residual life distributions, Statistics, 1993, 24(3), 245-251.
4 P.G.Sankaran and N.Unnikrishnan Nair: On form-invariant length biased models from Pearson family, Journal of the Indian Statistical Association, 1993, 31(2), 85-89.
5 P.G.Sankaran and N.Unnikrishnan Nair: Some characterizations of the geometric law, Proceedings of the Mahalanobis Birth Centenary Symposium, 1993, 69-78.
6 P.G.Sankaran and N.Unnikrishnan Nair: Bivariate variance residual life, IAPQR Transactions, 1993, 18(2), 1-6.
7 P.G.Sankaran and N.Unnikrishnan Nair: A bivartiate Pareto model with applications to reliability, Naval Research Logistic Quarterly, 1993, 40, 1013-1020.
8 P.G.Sankaran, K.M.Kuruvila and K.J.Madhusoodhanan: Correlation between growth characters in Vanila, Journal of Indian Spices and Aromatic Crops, 1994, 155-157.
9 P.G.Sankaran, N.Unnikrishnan Nair and N.Hitha: Some characterizations of the Geometic law, Aligarh Journal of Statistics, 1996, 15, 49-54.
10 P.G.Sankaran and N.Unnikrishnan Nair: On bivariate finite range distributions, Journal of the Indian Statistical Association, 1996, 119-124.
11 N.Ajithkumar and P.G.Sankaran: Instability of Turmeric Production in India, Journal of Spices and Aromatic Crops, 1998, 19-22.
12 R.P.Gupta and P.G.Sankaran: Bivariate equilibrium distributions and its applications in reliability, Communications in Statistics-Theory and Methods, 1998, 15, 49-59.
13 P.G.Sankaran and R.P.Gupta: Characterization of lifetime distributions using measure of uncertainty, Calcutta Statistical Association Bullettin, 1999, 49, 154-166.
14 P.G.Sankaran and N.Unnikrishnan Nair: On reliability aspects of Pearson family of distributions, Statistical Papers, 2000, 41, 109-117.
15 P.G.Sankaran and N.Unnikrishnan Nair: Conditional mean residual life functions, Communications in Statistics-Theory and Methods, 2000, 29(7), 1663-1675.
16 P.Priya, P.G.Sankaran and N.Unnikrishnan Nair: Factorial partial moments and their properties, Journal of the Indian Statistical Association, 2000, 38(1), 45-56.
17 P.G.Sankaran, R.P.Gupta and N.Unnikrishnan Nair: Characterizations using joint distribution of age and residual life in Stationary Renewal process, Far East Journal of Theoretical Statistics, 5(2), 2001, 253-264.
18 P.G.Sankaran and T.K.Sindu: On IFR (DFR) classes of distributions, IAPQR Transactions, 26(2), 2001.
19 G. Asha and P.G Sankaran: A bivariate geometric distribution with applications in reliability, Journal of Indian Statistical Association, 2002.
20 P.G.Sankaran, N. Unnikrishnan Nair and T.K.Sindu:A generalized Pearson system useful in reliability analysis, Statistical Papers, 44, 125-130, 2003.
21 G.Asha, P.G.Sankaran and N.UnnikrishnanNair: Probability models with constant total failure rate, Communications in Statistics – Theory and Methods, 32, 1089-1099, 2003.
22 P. G. Sankaran and S.M.Sunoj:Identification of models using failure rate and mean residual life of doubly truncated random variable, Statistical Papers, 45, 97-109, 2004.
23 R.P.Gupta, R.D.Gupta and P.G.Sankaran: Identification of failure rate, Calcutta Statistical Association Bulletin, 53, 209-222, 2004.
24 P.G.Sankaran and R.P.Gupta: Characterizations using local dependence functions, Communications in Statistics –Theory and Methods, Special issue on Characterizations of Probability Distributions, 33, 2004.
25 R.C.Gupta, R.D.Gupta and P.G.Sankaran: Some characterization results based on factorization of the (reversed) hazard rate function, Communications in Statistics – Theory and Methods, Special issue on Characterizations of Probability Distributions, 33, 2004.
26 G.Asha, N.U.Nair and P.G.Sankaran: Discrete models characterized by bivariate conditional mean residual life, Calcutta Statistical Association Bulletin, 55, 241-252, 2004.
27 N.U.Nair, G.Asha and P.G.Sankaran: On the covariance of residual lives, Statistica, 64, 573-585, 2004.
28 P.G.Sankaran and Maya, T Nair: On a finite mixture of beta distributions, Far East Journal of Theoretical Statistics, 103-120, 2004.
29 P.G.Sankaran and N.Unnikrishnan Nair: Partial moments in bivariate set up, Metron, 339-351, 2004
30 N.U.Nair, P.G.Sankaran and G.Asha: Characterizations based on reliability concepts, Journal of Applied Statistical Science, 14, 237-242, 2005.
31 B.Abraham and P.G.Sankaran: Renyi’s entropy for residual lifetime distributions, Statistical Papers, 17-30, 2005.
32 P.G.Sankaran and R.D.Gupta: A general class of distributions- properties and applications, Communications in Statistics- Theory and Methods, 34, 2089-2095, 2005
33 P.G.Sankaran and Maya.T.Nair: On a finite mixture of Pareto distributions, Calcutta Statistical Association Bulletin , 67-84, 2005
34 Ansa Alphonsa Antony and P.G.Sankaran: Non parametric estimation of bivariate survivor function of competing risk models under censoring, Journal of Statistical Theory and Applications, 4, 401-423, 2005.
35 S.M.Sunoj and P.G.Sankaran: Bivariate weighted distributions in the context of reliability modeling, Calcutta Statistical Association Bulletin, 57, 179-194. 2005.
36 P.G.Sankaran and Gleeja.V.L: On bivariate reversed hazard rates, Journal of Japan Statistical Association, 36(2), 213-224, 2006
37 P.G.Sankaran, J.F.Lawless, B.Abraham and Ansa A Antony: Non-parametric estimation of distribution functions in bivariate competing risk models, Biometrical Journal, 48(3), 399-410, 2006.
38 P.G.Sankaran, Bovas Abraham and Ansa Alphonsa Antony: A dependence measure for bivariate failure time data, Metron, 64, 1-15, 2006.
39 P.G.Sankaran and Ansa Alphonsa Antony: Bivariate competing risks models under random left truncation and right censoring, Sankhya, Special issue on Biology and Health Sciences, 69, 425-447, 2007.
40 P.G.Sankaran and Sreeja, V.N.: Proportional hazards model for multivariate failure time data, Communications in Statistics- Theory and Methods, 36(8), 2007
41 Sreeja, V.N. and P.G.Sankaran: Proportional mean residual life model for gap time distributions of recurrent events, Metron, LXV(3),319-336, 2007.
42 S.M.Sunoj, P.G.Sankaran and Maya, S.S: Characterizations of distributions using log odds rate, Statistics, 41(5), 443-451, 2007.
43 Bovas Abraham, N.Unnikrishnan Nair and P.G.Sankaran: Characterization of some continuous distributions by properties of partial moments, Journal of Korean Statistical Society, 36, 357-365, 2007.
44 P.G.Sankaran, Gleeja.V.L. and T.M.Jacob: Non parametric estimation of reversed hazard rate, Calcutta Statistical Association Bulletin, 59, 55-68, 2007.
45 S.Smitha, K.R.Muraleedharan Nair and P.G.Sankaran: On measures of affinity for truncated distributions, Calcutta Statistical Association Bulletin, 69, 23-46, 2007.
46 P.G.Sankaran and Ansa Alphonsa Antony: Bivariate competing risks models under masked causes of failure, Advances in Mathematical modeling for Reliability (Eds. Bedford, T., Quiglex, J., Walls, L., Alkali, B., Daneshkhah, A. and Aardman, G.), 72-79, 2007.
47 N.Unnikrishnan Nair, P.G.Sankaran and Vinesh Kumar B: Total time on test transforms of order n and its implications in reliability analysis, Journal of Applied Probability, 45, 1126-1139, 2008.
48 P.G.Sankaran and Ansa Alphonsa Antony: Non-parametric estimation of bivariate survivor function under masked causes of failure, Journal of Nonparametric Statistics, 20, 77-89, 2008.
49 P.G.Sankaran and Gleeja V.L: Proportional reversed hazard and frailty models, Metrika, 68, 333-342, 2008.
50 N.Unnikrishnan Nair and P.G.Sankaran: Characterizations of multivariate distributions, Journal of Multivariate Analysis, 99, 2096-2107, 2008.
51 P.G.Sankaran and K.Jayakumar: On proportional odds models, Statistical Papers, 49, 779-789, 2008.
52 P.G.Sankaran and Gleeja V.L: Association of measures for bivariate lifetime data, Communication in Statistics-Theory and Methods, 37, 3228-3249, 2008.
53 P.G.Sankaran and Ansa Alphonsa Antony: Non parametric estimation of life time distribution of competing risk models when censoring times are missing, Statistical Papers, 50, 339-361, 2009.
54
  1. P.G.Sankaran and T.K.Sindu: A generalized Ord family of distributions useful in reliability analysis, Journal of Statistical Theory and Applications, Special issue on Characterization and Classification of Distributions, 8, 61-74, 2009
55
  1. N.Unnikrishnan Nair and P.G.Sankaran: Quantile based reliability analysis, Communication in Statistics-Theory and Methods, 99, 2096-2107, 2009.
56
  1. P.G.Sankaran and N.Unnikrishnan Nair: Non parametric estimation of hazard quantile function, Journal of Nonparametric Statistics, 21(6), 757- 767, 2009
57 S.M.Sunoj, P.G.Sankaran and S.S.Maya: Characterizations of life distributions using conditional expectations of double (interval) truncated random variables, Communication in Statistics-Theory and Methods, 38, 1441-1452, 2009.
58
  1. K.R.Muraleedharan Nair , P.G.Sankaran and Smitha.S: Chernoff distance for truncated distributions, Statistical Papers,  2010(DOI 10.1007/s00362-009-0297-6)
59
  1. P.G.Sankaran, N.Unnikrishnan Nair and E.P.Sreedevi: A quantile based test for comparing cumulative incidence functions of competing risks models, Statistics and Probability Letters, 80, 886-891, 2010
60
  1. N.Unnikriahnan Nair and P.G.Sankaran: Properties of a mean residual life  function arising from renewal theory, Naval Research Logistics Quarterly, 57, 373-379, 2010
61
  1. N.Unnirkishnan Nair and P.G.Sankaran: A new measure of association for bivariate survival data, Journal of Statistical Planning and Inference, 140, 2569-2581, 2010
62
  1. P.G.Sankaran and Midhu N.N: On waiting time distributions for patterns in a sequence of multistate trials, Statistics and Probability Letters, 80, 1798-1805, 2010.
63 P.G.Sankaran, Ashis SenGupta and Sreeja V.N.: Nonparametric estimation of distribution function using concomitants of order statistics. Journal of Statistical Theory and Practice, 4(4), 617-630, 2010
64
  1. E.P.Sreedevi and P.G.Sankaran: A semiparametric Bayesian approach for the analysis of competing risks data, Communications in Statistics-Theory and Methods, 2010 ( to appear)
65 P.G.Sankaran and Sreeja V.N.: Proportional Hazards Model for Successive Duration Times Under Informative Censoring, Communications in Statistics- Theory and Methods, 2010 (to appear).
66
  1. N.Unnikrishnan Nair, P.G.Sankaran and M.Preeth,: Reliability Aspects of Discrete Equilibrium Distributions, Communications in Statistics- Theory and Methods, 2010 (to appear).
67 N.Unnirkishnan Nair and P.G.Sankaran.: Some results on an additive hazards model, Metrika, 2010 (to appear)
68
  1. P.G.Sankaran and Sreeja V.N.: Proportional Hazards Model for Gap Time Distributions of Recurrent Events, Special issue on Survival Analysis, Journal of Statistical Theory and Applications, 2010 (to appear)
69
  1. N.Unnikrishnan Nair, P.G.sankaran and  Vineesh Kumar B.: Modelling lifetimes by quantile functions using Parzen’s score function, Statistics, 2011 (to appear).
70
  1. P.G.Sankaran and Anisha P.: Shared frailty model for recurrent event data with multiple causes, Journal of Applied Statistics, 2011 (to appear).
71
  1. P.G.Sankaran and  Preetha Kumari P.V:. A parametric regression model useful in reliability analysis, Bulletin of Calcutta Statistical Association, 2011 (to appear).
72
  1. P.G.Sankaran and Gleeja V.L.: On proportional reversed hazards frailty models, Metron, 2011 (to appear)
73 N.Unnikrishnan Nair, P.G.Sankaran and B. Vineesh Kumar: Govindarajalu distribution and its properties, Communications in Statistics- Theory & Methods, 2011 (to appear)
  B. Books
1 N. Unnikrishnan Nair and P.G.Sankaran: Statistical Methods for Quality and Reliability, Published by Education Publishers and Distributors, Ernakulam, 1998.
2 P.G.Sankaran and S.M.Sunoj: The Collected Papers of Prof.n.Unnikrishnan Nair, Published by Department of Statistics, Cochin, 2007.
  C. Technical Reports
1 P.G.Sankaran, S.M.Sunoj and Sreedevi Menon: A General Health Profile of Corporation of Cochin, 2003.
2 P.G.Sankaran, S.M.Sunoj and Sreedevi E.P: A Study on Population Changes in Corporation of Cochin, 2005.
Conferences/Workshops/Refresher Courses participated
1 Annual Conference of Indian Society of Agricultural Statistics, Thrissur, February 1994.
2 International Symposium on plantation crops, NRCS, Calicut, November 1994.
3 Annual Conference of Indian Society for Probability and Statistics, Thirunelveli, December 1994.
4 International Conference on ‘Quality Improvement through Statistical Methods’, Cochin University of Science and Technology, December 1996.
5 Workshop on QS 9000, Cochin, January 1997.
6 UGC Sponsored Refresher Course, Department of Statistics, CUSAT, March, 1997
7 National Seminar on ‘Stochastic Systems’, Mangalore University, February 1998.
8 National Seminar on ‘Development in Statistical Science’, Bangalore University, August 1998.
9 International Conference on ‘Combinatorics, Statistics, Pattern Recognition and Related Areas’, University of Mysore, December 1998.
10 International Conference on ‘Stochastic Processes and their Applications’, Cochin University of Science and Technology, December 1999.
11 National Conference on ‘Reliability Analysis’, Cochin University of Science and Technology, December 1999.
12 National Seminar on ‘Probability Models and Applied Statistics’, University of Calicut, February 2000.
13 International Conference on ‘Statistics in 21st Century’, University of Maine, USA, June 2000.
14 International Symposium on ‘Development of Statistics in 21st Century’, University of Madras, USA, June 2000.
15 BOYSCAST Fellowship of DST, Govt. of India, University of Dalhousie, Canada, March-September, 2000.
16 Workshop on ISO 9000, Third Edition and Cost of Quality, Cochin, January 2001.
17 Workshop on Bayesian Inference and its Applications, Indian Statistical Institute, March 2001.
18 International Conference on Reliability Analysis, University of Pune, June 2001.
19 Annual Conference of ISPS, University of Chandigarh, Chandigarh, December 2001.
20 Annual Conference of ISPS, University of Pune, Pune, December 2001.
21 International Conference on Statistics in Industry and Business, Cochin, January 2003.
22 Annual Conference of ISPS, Nagarjuna University, Guntur, December 2003.
23 Annual Conference of ISPS, St.Thomas College, Palai, November 2004
24 UGC Sponsored Refresher Course, Department of Statistics, CUSAT, November, 2004
25 International Srilankan Conference, University of Perideniya, December 28-30, 2004
26 International Conference on Reliability, Statistics and Related Areas, Indian Institute of Management, Calicut, January 6-8, 2005.
27 International Conference on Statistical Inference and Stochastic Processes, University of Pune, January 8-10, 2006.
28 International Conference on Reliability, Survival analysis and related areas, ISI, New Delhi, December 20-22,2005.
29 National Seminar on Modeling and Analysis of Life time Data, Cochin University of Science and Technology, February 20-22, 2006.
30 IISA Joint Statistical Meeting and International Conference on Statistics, Probability and Related Areas, Cochin, January 2-5, 2007.
31 IISA Workshop on Financial Mathematics, Cochin, January 6, 2007.
32 Mathematical Methods in Reliability Conference, Glasgow, U.K., July 1-4, 2007.
33 International Conference on Probability, Statistics, Operations Research, Computer Science and Related areas, IISA & ISPS annual conference, Andhra University, Vysag, January 4-8, 2010.
34 International Conference on Business and Industrial Statistics organized by International Society for Business and Industrial Statistics, Protrose, Slovenia, July 5-9, 2010
35
  1. Workshop on Reliability Theory and Survival Analysis, Indian Institute of Technology, Mumbai, November 25-27, 2010
36 National Seminar on Advances in Statistics, Calcutta University, Kolkata, January 28-29, 2011
37 National Seminar on Statistics in 21st Century,  University of Kerala, Trivandrum, March 17-19, 2011
38
  1. National Seminar on Stochastic Modelling and Analysis, Cochin University of Science and Technology, Cochin,  March 24-25, 2011
 
Academic Activities
1 Resource Person for UGC sponsored Refresher course for University/College teachers conducted by Academic Staff College, University of Calicut, 2001.
2 Resource Person for UGC sponsored Refresher course for University/College teachers conducted by Department of Statistics, Victoria College, Palakkad, 2001.
3 Resource Person for UGC sponsored Refresher course for University/College teachers conducted by Academic Staff College, University of Kerala, Thiruvananthapuram, 2001.

Residence Address

Paduthol Mana
Panagarappilly PO
Mulanthuruthy
Ernakulam 682 314
Phone: 91-484-2741693
 
© Cochin University of Science & Technology, Cochin-22, Kerala, India  ::  Contact us  ::  Disclaimer