REFEREED PUBLICATIONS:

    S. E. Ahmed and W. J. Krzanowski (2003). Biased estimation in a simple multivariate regression model. Computational Statistics and Data Analysis. In press. S. E. Ahmed (2003). Pooling component means making sense or folly. New Developments in Psychometrics. Springer-Verlag:Tokyo S. E. Ahmed, R. G. Antonini and A.I. Volodin (2002). On the rate of complete convergence for weighted sums of arrays of Banach space valued random elements with application moving average processes. Statistics and Probability Letters, 58, 185-194. S. E. Ahmed and S. M. Khan (2002). Using several data to structure efficient estimation of intraclass correlation coefficients. Measurement and Multivariate Analysis, Springer-Verlag:Tokyo.

  1. S. E. Ahmed, A. I. Volodin and a. H. Joarder (2002).  Pretest estimation of eigenvalues of a Wishart matrix.  International  Mathematical Journal, 1, 259-272. S. E. Ahmed and A. I. Volodin (2001). The complete convergence rates of rates of the bootstrap mean. Data Analysis From Statistical Foundations, 207-213. Editor: A. K. M. E. Saleh, Nova:New York.
  2. S. E. Ahmed (2001). Simultaneous estimation of coefficients of variation. Journal of Statistical Planning and Inference, 104, 31-51. 23 pages.
  3. S. E. Ahmed, D. Li,, A. Rosalsky and A. I. Volodin (2001).  Almost sure lim sup behavior of bootstrapped means with applications to pairwise i.i.d. sequences and stationary ergodic sequences.  in  Jornal of Statistical Planning and Inference.  98, 114.
  4. S. E. Ahmed, A. K. Gupta, S. M. Khan and C. Nicol (2000). Simultaneous estimation of several intraclass correlation coefficients. To appear in Ann. Inst. Statist. Math., 53, 354-369.
  5. S. E. Ahmed, T. C. Hu and A. I. Volodin (2001).  On the rate of convergence of bootstrapped means in a Banach space.  International Jornal of Mathematics and Mathematical Sciences, 25, 629-635.
  6. S. E. Ahmed, S .H. Sung and A. I. Volodin (2001).  Mean convergence theorem for arrays of random elements in martingale type pBanach space.  Bulletin of the Institute of Mathematics, Academia Sinica,30, 89-95.
  7. S. E. Ahmed (2000).  Point and interval  estimation in the combination of bioassay results with unequal variances.  Biometrical Journal, 42, 973-979.
  8. S. E. Ahmed and M. Hanif (2000).  On combining estimates of relative potency in bioassay with unequal variances.  Pakistan Journal of Statistics, 16, 303-314.
  9. S. E. Ahmed  and M. H. Rahbar (2000).  Shrinkage and pretest ponparametric estimation of regression parameters from pensored data with multiple observations at oach oevel of oovariate.  Biometrical Journal, 42, 511-525.
  10. S. E. Ahmed and W. J. Braun (2000).  testing the homogeneity of tumor growth rates in several models.  stochastic Modelling and applications, 3, 11-22.
  11. S. E. Ahmed  and R. J. Mcintosh (2000). An asymptotic approximation for the birthday problem. Curx  Mathematicorum (A publication of Candian Mathematical Society), 26, 151-155.
  12. S. E. Ahmed  and R. J. Kulperger (2000).  Simultaneous estimation of the means of exponential distributions. F East J. Theo. Stat., 4, 297-318.
  13. S. E. Ahmed (2000). Stein-type shrinkage quantile estimation. Stochastic Analysis And Applications, 18, 475-492.
  14. M. Ahsanullhand S. E. Ahmed (2000). Bayes and empirical Bayes estimates of survival and hazard functions of a class of distributions.  Empirical Bayes and Likelihood Inference,  Lecture Notes in Statistics, 148, 81-87. Editors: S.E. Ahmed and N. Reid, Springer-Verlag: New York.
  15. S. E. Ahmed (2000). Construction of improved estimators of multinomial proportions. Communications in Statistics: Theory and Methods, 29, 1273-1291.
  16. S. E. Ahmed and A. K. Basu (2000). Least squares, preliminary test and Stein-type estimation in general vector AR(p) models. Statistica Neerlandica, 54, 47-66.
  17. S. E. Ahmed (2000). Shrinkage estimation of regression coefficients from censored data with multiple observations. To appear in Empirical Bayes and Likelihood Inference,  Lecture Notes in Statistics, 148, 103-120. Editors: S.E. Ahmed and N. Reid, Springer-Verlag: New York
  18. S. E. Ahmed and M. Ahsanullah (1999).   Testing and estimating signal to noise ratio.   Applied Statistical Science, IV, 259-267 .
  19. S. E. Ahmed and E. Saleh (1999). Estimation of regression coefficients in an exponential regression model with censored observations. Japan Journal of Statistics, 29, 55-64.
  20. S. E. Ahmed (1999). Simultaneous estimation of survivor functions in exponential lifetime models. Journal of Statistical Computation and Simulation, 63, 235-261.
  21. Li, D., A. Rosalsky and S. E. Ahmed (1999). Complete convergence of bootstrapped mean and moments of the supremum of normed bootstrapped sums. Stochastic Analysis And Applications, 17, 799-814.
  22. S. E. Ahmed and E. Saleh (1999). Improved nonparametric estimation of location vector in a multivariate regression Model, Nonparametric Statistics, 11,51-78.
  23. S. E. Ahmed and B. Ullah (1999). To pool or not to pool: The multivariate data. Sankhya,61, Series B, 266-288.
  24. S. E. Ahmed, S. Aslam and I. Mohamamd (1999).  Inference concerning the hazard rate when life has an exponential distribution.  Proc. Seventh Stat. Sem. K.U.
  25. S. E. Ahmed and B. Ullah (1999). Improved biased estimation in an ANOVA model . Linear Algebra and its Application, 289, 3-24.
  26. A. H. Joarder and S. E. Ahmed (1998). Estimation of the scale matrix of a class of elliptical distributions. Metrika, 48, 149-160.
  27. S. E. Ahmed (1998). Improved pretest nonparametric estimation in a multivariate regression model. Communications in Statistics: Theory and Methods, 27, 2391-2421.
  28. S. E. Ahmed (1998). Large-Sample Estimation Strategies for Eigenvalues of a Wishart Matrix. Metrika, 47, 35-45.
  29. S. E. Ahmed, D. S. Bhoj and M. Ahsanullah (1998). A Monte Carlo study of robustness of pretest and shrinkage estimators in pooling coefficients of variation. Biometrical Journal, 40, 737-751.
  30. S. E. Ahmed (1998). Improved estimation of the parameters of an autoregressive Gaussian process under uncertain restriction. A chapter nonparametric Statistics and Related Topics, 97-111. Editors: S.E. Ahmed, M. Ahsanullah and B. K. Sinha, Nova Science: New York.
  31. T. N. Mahdi, M. Zafaryab and S. E. Ahmed (1998). Improved Prediction in Parallelism Problem. Pakistan Journal of Statistics, 14, 1207-147.
  32. T. N. Mahdi, S. E. Ahmed and M. Ahsanullah (1998). Improved prediction: Pooling two identical regression lines. Journal of Applied Statistics, 7, 63-86.
  33. S. E. Ahmed (1997). Asymptotic shrinkage estimation: The regression case. A chapter in Applied Statistical Science II, 113-143. Editor: M. Ahsanullah, Nova Science: New York.
  34. S. E. Ahmed (1997). To pool or not to pool the proportion in randomizes response survey. Communications in Statistics: Theory and Methods, 26, 2499-2525.
  35. S. E. Ahmed (1997). Improved R-estimation of regression coefficients. Journal of Statistical Research, 31, 53-73.
  36. S. E. Ahmed, M. Zafaryab and A. K. A. Katan (1997). Pooling slopes of several regression lines. Pakistan Journal of Statistics, 13, 79-86.
  37. S. E. Ahmed and R.J. Tomkins (1997). On pooling means from two lognormal populations with unequal variances. Journal of Applied Statistical Sciences, 6, 1-19. (In press; May 1997).
  38. S. E. Ahmed and S. M. Khan (1997). Shrinkage estimation in randomized response model. InterStat, September issue, 1-20.
  39. B. M. Kibria and S. E. Ahmed (1997). Shrinkage estimation for the multicollinear observations in a regression model with multivariate t disturbances. Journal of Statistical Research, 31, 83-102.
  40. A. H. Joarder and S. E. Ahmed (1996). Estimation of the characteristic roots of the scale matrix. Metrika, 44, 259-267.
  41. S. E. Ahmed and T. N. Mahdi (1996). Improved prediction in a simple regression model. Pakistan Journal of Statistics, 12, 201-213.
  42. S.E. Ahmed and S. M. Khan (1996). On estimation of a set of binomial probabilities. Journal of Statistical Research, 30, 77-99.
  43. S. E. Ahmed and V. J. Rohatgi (1996). Shrinkage estimation in a randomized response model. Metrika, 43, 17-30.
  44. S. E. Ahmed (1995). A pooling methodology for coefficient of variation. Sankhya B, 57, 57-75.
  45. S. E. Ahmed and J. S. Siddique (1995). Modifying median estimator with a preliminary test. Pakistan Journal of Statistics, 11, 117-122.
  46. S. E. Ahmed (1995). Improved Shrinkage estimation of relative potency. Biometrical Journal, 37, 627-638.
  47. S. E. Ahmed and R. J. Tomkins (1995). Estimating lognormal mean using uncertain prior information. Pakistan Journal of Statistics, 11, 67-92.
  48. S. E. Ahmed, S. M. Khan and A. Khurshid (1995). Shrinkage estimation of the binomial proportion. Journal of Statistical Studies.
  49. S. E. Ahmed (1994). Improved estimation in a multivariate regression model. Journal of Computational Statistics and Data Analysis, 17, 537-554.
  50. S. E. Ahmed (1994). Improved estimation of the coefficient of variation. Journal of Applied Statistics, 21, 565-573.
  51. S. E. Ahmed, S. M. Khan and M. A. Burney (1994). Estimating function of a parameter. Industrial Mathematics, 44, 15-21.
  52. S. E. Ahmed (1993). Pooling reliability functions. Journal of Statistical Computation and Simulation, 49, 85-101.
  53. S. E. Ahmed and E. Saleh (1993). Improved estimation for the component mean-vector. Japan Journal of Statistics, 43, 177-195.
  54. S. E. Ahmed (1993). Pooling means under uncertain prior information with application to discrete distributions. Statistics, 24, 265-277.
  55. S. E. Ahmed and S. M. Khan (1993). Improved estimation of the Poisson parameter. Statistica, anno LIII n.2, 268-286.
  56. S. E. Ahmed (1992). Large sample pooling procedure for correlation. The Statistician, 41, 415-428.
  57. S. E. Ahmed (1992). Shrinkage preliminary test estimation in multivariate normal distributions. Journal of Statistical Computation and Simulation, 43, 177-195.
  58. R. J. Kulperger and S. E. Ahmed (1992). A bootstrap theorem for a preliminary test estimator. Communications in Statistics: Theory and Methods, 21, 2071-2082.
  59. S. E. Ahmed and S. O. Badahdah (1992). On the estimation of the mean vector of a multivariate normal distribution under symmetry. Communications in Statistics: Theory and Methods, 21, 1759-1778.
  60. S. E. Ahmed (1992). Asymptotic estimation of reliability in a life-testing model. Journal of Industrial Mathematics Society, 41, 7-18.
  61. S. E. Ahmed and S. M. Khan (1991). Shrinkage estimation in pooling data for arbitrary populations. Environmetrics, 2, 457-474.
  62. S. E. Ahmed (1991). To pool or not to pool: The Discrete Data. Statistics and Probability Letters, 11, 233-237.
  63. S. E. Ahmed (1991). Combining Poisson means. Communications in Statistics: Theory and Methods, 20, 771-789.
  64. S. E. Ahmed (1991). Use of apriori information in the estimation of Poisson Parameter. Soochow Journal of Mathematics, 16, 185-192.
  65. S. E. Ahmed (1991). A note on the estimation of proportion in binomial population. Pakistan Journal of Statistics, 6, 63-70.
  66. S. E. Ahmed and E. Saleh (1990). Estimation strategies for the intercept vector in a simple linear multivariate normal regression model. Journal of Computational Statistics and Data Analysis, 10, 193-206.
  67. S. E. Ahmed and R. J. Kulperger (1990). Asymptotic con dence intervals from a preliminary test estimator. Environmetrics, 1, 295-303.
  68. S. E. Ahmed and E. Saleh (1989). Pooling multivariate data. Journal of Statistical Computation and Simulation, 31, 149-167.
  69. S. E. Ahmed (1989). Estimation theory under uncertain prior information. Pakistan Journal of Statistics, 5 , 211-228.
  70. H.J. Malik, N. Balakrishnan and S. E. Ahmed (1988). Recurrence relations and identities of moments of order statistics I: Arbitrary continuous distributions. Communications in Statistics: Theory and Methods, 17, 2623-2655.
  71. N. Balakrishnan, H. J. Malik and S. E. Ahmed (1988). Recurrence relations and identities of moments of order statistics II: speci c continuous distributions. Communications in Statistics: Theory and Methods ,17, 2657-2694.
  72. S. E. Ahmed and E. Saleh (1988). Estimation strategy using a preliminary test in some univariate normal models. Soochow Journal of Mathematics, 14,135-65.
  73. S. E. Ahme$ and J. S. Siddique (1988). Linear regression diagnostics. Jour. Soc. Sci. & Humn., 2, 63-68.
Articles submitted to refereed journals

Other refereed contributions:

  1. A. I. Volodin, C. Nicol and S. E. Ahmed (2000). Improved estimation of regression coefficients in censored Weibull and extreme value regression model.  Abstract Book of Second International Conference on Mathematical Methods in Reliability, Volume 2, 1018-1021.
  2. S. E. Ahmed (2000) Improved estimation strategies in combining data from various sources.  Proceeedings of The International Conference on Measurement and Multivariate Analysis.  Volume Two, 13-135.
  3. S. E. Ahmed, D. Li, A. Rosalsky and A. I. Volodin (2000). Strong limit theorems for bootstrapped means.   Abstract Book of Second International Conference on Mathematical Methods in Reliability, Volume 1, 55-58.
  4. Shrinkage estimation of reliability in the exponential life-testing model. Proceedings of ICSS.
  5. S. E. Ahmed and E. Saleh (1989). Pooling component-means. Recent Developments in Statistical and Actuarial Sciences. Editors: M. S. Haq and S. B. Provost. SciTex publications, 23-30.
  6. S. E. Ahmed (1989). A graduate course in statistical consulting, computing and data analysis. Proceedings of First Islamic Countries Conference on Statistical Sciences. Editor: M. Ahmad, 1102-1111.
Non-refereed contributions:
  1. S. E. Ahmed (1999). Improved estimation of regression coefficient from censored data. Bulletin of the International Statistical Institute. 52nd Session, Book 11-12.
  2. S. E. Ahmed and W. J. Braun (1996). Tumor growth rate pretest estimation. Proceedings of the Fifth Islamic Countries Conference on Statistical Sciences, Volume 1, Invited papers. Brawijaya University, Malang, Indonesia (INVITED PAPER).
  3. S. E. Ahmed and S. M. Khan (1995). Improved estimation in a randomized response model. Proceedings of the Survey Methods Section, Statistics Canada, 103-106.
  4. S. E. Ahmed and Bashirullah (1993). Combining data sources in estimation. Proceedings of the International Conference on Establishments Surveys of the American Statistical Association.
  5. S. E. Ahmed (1989). Use of a priori information in the estimation of binomial proportion. Bulletin of the International Statistical Institute. 47th Session, 47-48.