SPECIAL ISSUE IN HONOUR OF PROFESSOR S.EJAZ AHMED
EDITOR; S.PROVOST
PAKISTAN JOURNAL OF STATISTICS
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Volume 18 May 2002 No.2
CONTENT
Multivariate Constrained Bayes Estimation
Malay
Gosh and Dalho Kim …… 143
Estimatng Parameterrs in a Tumor Growth Interacting
Particle System: The Continuity of Moments
W
.J.Braun and R.J.Kulperger……149
An Approximation to the Distribution of the Autocorrelation
Coefficient
Edmund
M.Rudiuk ……..165
Testing for Departure from Exponentiality among Distributions
Possessing
Increasing Hazard Rates
Rajesh
K.Barnwal and Serge B.Provost…………..170
A New Proposal for Pairwise Multiple Comparisons with Repeated
Measurements
Ernst Schuster and
Siegfried Kropf…………………197
Testing the Mean of Skewed Distributions: Chen’s t2 Test
Revised
B.M.Golam
Kibria and
Arlene Naranjo…………….213
Large Sample Estimation of a Family of Economic Inequality Indices
Ricardas Zitikis……………225
On the Kolmogorov Exponential Inequality for Negatively Dependent
Random Variables
Andrei Volodin…………….249
Erdos-Renyi-Shepp Laws for Arrays with Application to Bootstrapped
Sample Means
Deli
Li and
Andrew Rosalsky……………..255
Preliminary Test Estimation of Regression Coefficients in an
Exponential
Regression Model with Censored Observations
S.M.khan……………………...265
Properties and Applications of Measurable Covers and Cores
R.J.Tomkins…………………..275
Meta-Analytical Themes in the History of Statistics: 1700 to
1938
Keith
O’Rourke……………….285
Estimation of Distribution Function and Median in Two Phase
Sampling
Sarjinder Singh and
Anwar H.Joarderr…… ……..301
Influential Observations in a Preliminary Test Estimator of
the Mean
Chien -Pai Han……………….321
Forward
In September 2000,the Executive Board of the Islamic Society of Statistical
Science
Awarded a gold medal to Professor Syed Ejaz Ahmed in recognition of his contributions
To the statistical literature and his interest in the advancement of Statistics,which
has motivated Pakistanis,in particular,and Muslim statisticians,in general,to
undertake research in this discipline.As a further acknowledgement of his scholarly
work and dedication,the Board mandated the publication of this specila issue
of the Pakistan Journal of Statistics.
Professor Ahmed received a PH.D from Carleton University in 1987,having previously
abtained Master’s degree from the University of Guelph(1984) and the University
of Karachi(1997).He taught in the Department of Statistical and Actuarial Sciences
at the University of Western Ontario form January 1987 to August 1989,at which
point he made a career move to the University of Regina,Department of Mathematics
and Statistics,where he was promoted to the rank of Associate Professor in July
1993 and of full professor in July 1998.He became Head of the Mathematics and
Statistics Department at the University of Regina in July 1999.While in this
position,he institute an Actuarial Science program with corporate sponsorship,joint
programs with Biology and Economics,a co-op program in Statistics,hired several
outstanding faculty member,formally established a center for statistical consulting
and research,acting to date as its founding director,and set up a state-of-the-art
computing laboratory,as his department expanded.He has been responsible for
several initiatives that attract students to studies in his department,Effective
July 1,2002,he will become Head of the Department of Mathematics and Statistics
at the Univeristy of Windsor,Windsor,Ontario.
Professor Ahmed developed and taught a variety of courses at both the undergraduate
and graduate levels.He also established the Master’s of Science and Doctoral
programs in Statistics,and produced the first PH.D.student in Statistics at
the University of Regina.He has since supervised several graduate students both
at the Master’s and PH.D.levels.His students hold positions in universities
and industries in Canada,the United States and abroad.
His area of expertise is Mathematical Statistics,more specifically,statistical
inference,multivariate analysis,and asymptotic theory.He is a foremost scholar
who brought the substantial benefits of James-Stein estimation to bear on complicated
the fovus of significant research developments in the early 21st century.The
continuous financial support that he received from the Natural Sciences and
Engineering Research Council of Canada and other sources since 1988 attests
to quality of his research.Professor Ahmed is an outstanding statistician who
has published more than seventy-five research articles in refereed journals,co-edited
two volumes of conference proceedings,and organized many conference sessions,workshops,and
symposia,He made more than seventy invited/contributed scholarly presentations
in various countries.He also spent time as a visiting scholar at Bowling Green
University,Univeristy of Exeter,Universiti Kebangsaan Malaysis,Centre de Recherche
Mathematique de l’Universite de Montreal,Kuwait Unveristy,the Lahore Univeristy
and Aga Khan Medical Univeristy,among others.He is an elected member of the
International Statistics Institute,and a Fellow of the Royal Statistical Society.
Dr.Ahmed has several the profession in a number of ways.For example,he has been
on the editorial board of several statistical journals,a member of the board
of directors of the Statistical Society of Canada,and has chaired its Education
Committee,he has carried out various consulting activities for industry,crown
corporations and the government of Saskatchewan.He acted as chief judge for
statistical projects at the Canada Wide Youth Science Fair in 1997.He has also
been a member of the Human Rights Committee of the Canadian Mathematical Society.
In addition to his professional activites,Dr.Ahmed has involved himself in his
cultural community:Ambassador,Pakistani Pavilion,Mosaic ’94,Regina;Co-ordinator,Regina
Urdu Language School,Regina,1992-1997;President,Islamic Association of Saskatchewan,Regina
Inc.,1994-1996;Manager,Pakistani Pavilion,Mosaic ’97,Regina;Chairman and
President,Saskatchewan Urdu Language Foundation,1992-2002.More recently,he has
been coordinator of the Muslims for Peace and Justice organization of Regina.
This special issue comprises fourteen articles written by colleagues,students
and academic friends of Dr.Ahmed.I should add that their response to my invitation
to partake in this publication was uniformly enthusiastic.As Guest Editor,I
was delighted to have the opportunity to bring this undertaking to fruition.Professor
Ahmed’s commitment and experience in teaching,research,administration
and community service,as well as his numerious scholarly contributions indeed
make him exceptionally worthy of this honour.
Serge B.Provost
March 2002