^{
Carson College of Business
}
_{
Faculty Directory
}
Carson College Directory
Stergios Fotopoulos
Professor
Finance and Management Science
Education
- PhD (University of Liverpool)
- Other (University of Liverpool)
- Other (University of Thessaloniki)
Stergios Fotopoulos
Biographical Sketch
NAME: Dr. Stergios B. Fotopoulos
MAILING ADDRESS: Department of Finance and Management Science
Carson College of Business
Washington State University, Pullman, WA 99164-4726
Tel.: (509) 335-1728, FAX: (509) 335-7736
E-mail: fotopo@wsu.edu
PROFESSIONAL PREPARATION
Ph.D., Probability & Statistics, University of Liverpool, England, l981. Dissertation title: The Transient Behavior of a Two-Dimensional Stochastic Process.
M.Sc., Probability & Statistics, University of Liverpool, England, 1978. Dissertation title: Probabilistic Inequalities in Queuing Theory.
B.Sc., Mathematics, University of Thessaloniki, Greece, 1975, Major: General Mathematics.
PROFESSIONAL EXPERIENCE
Professor: Washington State University, 1998-present
Professor: University of Ioannina, GREECE, 2008 (sabbatical)
Professor: University of Patras, GREECE, 1999 (sabbatical)
Associate Professor: Washington State University, 1991-1998
Assistant Professor: Washington State University, 1985-1991
Associate Professor: The University North Carolina at Chapel Hill, 1992 (sabbatical)
Visiting Assistant Professor: Simon Fraser University, BC CANADA, 1983
Research Officer: Birkbeck College, University of London, 1981-1983
EDITOR
Applied Stochastic Models in Business and Industry, Wiley InterScience [2000-2006]
ASSOCIATE EDITOR
International Journal of Statistics & Systems (IJSS) [2006-2009]
Technometrics, book section [2005-present]
Applied Stochastic Models in Business and Industry, Wiley InterScience [2006-present]
FELLOW
The 2003 A.D. Welliver Fellowship, Boeing
INTERNATIONAL STATISTICAL INSTITUTE
Elected Member, 2015
PROFESSIONAL AFFILIATIONS
American Statistical Association; The Institute of Mathematical Statistics
HONORS
Dean’s Excellence Fellow, 2011, College of Business
Dean’s Excellence Fellow, 2010, College of Business
Outstanding Faculty Research Award, 2009, College of Business
Dean’s Excellence Fellow, 2009, College of Business
Outstanding Faculty Service Award, 2008, College of Business
Dean’s Excellence Fellow, 2008, College of Business
Teaching Innovative Award, 2006, College of Business
Outstanding Faculty Service Award, 2005, College of Business
Dean’s Excellence Fellow, 2005, College of Business
The 2003 A.D. Welliver Fellowship, Boeing
Outstanding Faculty, Scholarship/Research Award, 2000, College of Business
Outstanding MBA Professor of the Year,1997, College of Business
State Award of Service Recognition, 1996, Greece
PUBLICATIONS
Khapalova, E.A., Jandhyala, V.K., Fotopoulos, S.B. (2018). Alaskan temperature changes over time. Frontier Environmental Science, in print
S.B. Fotopoulos (2017). Symmetric Gaussian mixture distributions with GGC scales. Journal of Multivariate Analysis, 160, 185-194.
S.B. Fotopoulos, V.K. Jandhyala, and J. Wang (2015). On the joint distribution of the supremum functional and its last occurrence for subordinated linear Brownian motion. Statist. Prob. Letters, 106, 149-156.
S.B. Fotopoulos, V.K. Jandhyala and Y. Luo (2015). Subordinated Brownian motion: last time the process reaches its supremum. Sankhya A., 77, 46-64.
V.K. Jandhyala, P. Liu, S.B. Fotopoulos, and I.B. MacNeill (2014). Change-Point Analysis of Polar Zone Radiosonde Temperature Data. Journal of Applied Meteorology and Climatology, 53, 694-714.
S.B. Fotopoulos, V.K. Jandhyala and E. Khapalova (2010). Exact Asymptotic distribution of change-point mle for change in the mean of Gaussian sequences. The Annals of Applied Probability, 4, 1081-1104.
OTHER PUBLICATIONS
V.K. Jandhyala, S.B. Fotopoulos, I.B. MacNeill and P. Liu, (2013). Inference for single and multiple change-points in time series, Journal of Time Series Analysis, 34, 423-446.
V.K. Jandhyala, and S.B. Fotopoulos (2013). Change-point analysis of annual mean precipitation for northern, tropical and southern latitudes of the globe in the past century. Journal of Environmental Statistics, 4 (1).
Fotopoulos, S.B., Jandhyala, V.K. And Li, T. (2009). Asymptotic study of the change-point mle in multivariate Gaussian families under contiguous alternatives. Journal of Statistical Planning and Inference, 139, 1190-1202.
Fotopoulos, S.B. (2009). The geometric convergence rate of the classical change-point estimate. Statistics and Probability Letters, 79, 131-137.
Jandhyala, V.K. and Fotopoulos, S.B. (1999). Capturing the distributional behavior of the maximum likelihood estimate of a change-point. Biometrika, 89, 129-140.
PH.D. STUDENTS SUPERVISED (Chair of their committee)
Wang, Y-J (2016); Yuxing Luo (2014); Tan, Li (2010); Khapalova, Elena (2009); Eman Lofty Elseeawy (2006); Chen, K.H. (2002); Evaggelopoulos, N., (1999); He, L. (1997); H. Kim (1994); Srivastava, B. (1992).
I have also been a committee member for over 17 Ph.D. the last 10 years.
CURRENT GRADUATE STUDENTS
Silu, S. Kazemi, A. Paparas, V. Pavlopoulos, (Chair, Department of Finance and Management Science)
COLLABORATORS & OTHER AFFILIATIONS
D.Y. Downham, V. K. Jandhyala, E. Khapalova, L. Tan, D. M. Hawkins, C. Munson, S. Ahn, L. He, N. Evangelopoulos, H.M. Kim.
FUNDED PROPOSALS & GRANTS
National Science Foundation Grant: DMS-0806133 06/01/2008-05/31/2011, $149,966.00
Travel Grant, Boeing, International Business Program, Washington State University, 2002.
Research Grant, College of Business and Economics, Washington State University, 1995-1998.
Research Grants ($5000-$10000 per year), College of Business and Economics, Washington State University, 2011-2016.
Research Interests
applied probability
change-point analysis
decision-making under conditions of uncertainty
dynamic pricing and revenue management
empirical investments
empirical modeling
environmental decision-making
environmetrics
financial econometrics
financial institutions
inference making
multivariate analysis
service quality
statistical methodology
subordinated Brownian processes with their applications to asset
time series
volatility analysis
change-point analysis
decision-making under conditions of uncertainty
dynamic pricing and revenue management
empirical investments
empirical modeling
environmental decision-making
environmetrics
financial econometrics
financial institutions
inference making
multivariate analysis
service quality
statistical methodology
subordinated Brownian processes with their applications to asset
time series
volatility analysis
Teaching Interests
analytics
data analytics
data integration
data visualization
empirical methods in finance
management science
operations management
statistics
data analytics
data integration
data visualization
empirical methods in finance
management science
operations management
statistics
Journal Articles
- Stergios Fotopoulos, Venkata Jandhyala, Jun Wang On the joint distribution of the supremum functional and its last occurrence for subordinated linear Brownian motion Statistics & Probability Letters, 2015
- V. Jandhyala, P. Liu, S. Fotopoulos, I. Macneill Change-point analysis of polar zone radiosonde temperature data Journal of Applied Meteorology and Climatology, 2014
- E.A. Khapalova, V.K. Jandhyala, S.B. Fotopoulos Change-point analysis of annual mean precipitation for northern, tropical and southern latitudes of the globe in the past century Journal of Environmental Statistics, 2013
- Venkata Jandhyala, Stergios Fotopoulos, Ian Macneill, Pengyu Liu Inference for single and multiple change-points in time series Journal of Time Series Analysis / A Journal Sponsored by the Bernoulli Society for Mathematical Statistics and Probability, 2013
- V.K. Jandhyala, S.B. Fotopoulos Invited discussion to "Catching up faster by switching sooner: a predictive approach to adaptive estimation with an application to the Akaike informationâ€”Bayesian information criterion dilemma by T. van Erven, P. GrÃ¼nwald, and S. de Rooij" Journal of the Royal Statistical Society, Series B, 2012
- V.K. Jandhyala, S.B. Fotopoulos Invited discussion to "Quantifying the weight of evidence from a forensic fingerprint comparison: a new paradigm by N. Rice, S. Robone, and P. Smith" Journal of the Royal Statistical Society, 2012
- V.K. Jandhyala, S.B. Fotopoulos Invited discussion to "Vignetts and health systems responsiveness in cross-country comparative analyses by C. Neumann, I.W. Evette, and J. Skerrett" Journal of the Royal Statistical Society, 2012
- Xiangling Hu, Charles Munson, Stergios Fotopoulos Purchasing decisions under stochastic prices: Approximate solutions for order time, order quantity and supplier selection Annals of Operations Research, 2012
- Xiangling Hu, Charles Munson, Stergios Fotopoulos Purchasing decisions under stochastic prices: Approximate solutions for order time, order quantity and supplier selection Annals of Operations Research, 2012
- Stergios Fotopoulos, Venkata Jandhyala, Elena Khapalova Change-point mle in the rate of exponential sequences with application to Indonesian seismological data Journal of Statistical Planning and Inference, 2011
- Venkata Jandhyala, Stergios Fotopoulos, Jing You Change-point analysis of mean annual rainfall data from TucumÃ¡n, Argentina Environmetrics, 2010
- Stergios Fotopoulos, Venkata Jandhyala, Elena Khapalova Exact asymptotic distribution of change-point mle for change in the mean of Gaussian sequences Annals of Applied Statistics, 2010
- V.K. Jandhyala, S.B. Fotopoulos Invited discussion to "An explicit link to Gaussian fields and Gaussian Markov random fields: the stochastic partial differential equation approach by F. Lindgren, H. Rue, and J. Lindstrom" Journal of the Royal Statistical Society, Series B, 2010
- Stergios Fotopoulos, Venkata Jandhyala, Li Tan Asymptotic study of the change-point mle in multivariate Gaussian families under contiguous alternatives Journal of Statistical Planning and Inference, 2009
- Venkata Jandhyala, Pengyu Liu, Stergios Fotopoulos River stream flows in the Northern QuÃ©bec Labrador region: A multivariate change point analysis via maximum likelihood Water Resources Research, 2009
- Stergios Fotopoulos The geometric convergence rate of the classical change-point estimate Statistics & Probability Letters, 2009
- Nicholas Evangelopoulos, Anna Sidorova, Stergios Fotopoulos, Indushobha Chengalar-Smith Determining process death based on censored activity data Communications in Statistics: Simulation and Computation, 2008
- Stergios Fotopoulos, X. Hu, Charles Munson Flexible supply contracts under price uncertainty European Journal of Operational Research, 2008
- S. Fotopoulos, X. Hu, C. Munson Flexible supply contracts under price uncertainty European Journal of Operational Research, 2008
- Stergios Fotopoulos, Hu Xiangling, Charles Munson Flexible Supply Contracts under Uncertainty European Journal of Operational Research, 2008
- V. Jandhyala, S. Fotopoulos Estimating the unknown change point in the parameters of the lognormal distribution Environmetrics, 2007
- Stergios Fotopoulos, Venkata Jandhyala, Kim-Heng Chen Nonlinear properties of conditional returns under scale mixtures Computational Statistics and Data Analysis, 2007
- S. Fotopoulos, V. Jandhyala On Hinkley's estimator: Inference about the change point Statistics & Probability Letters, 2007
- Stergios Fotopoulos, Venkata Jandhyala, Kim-Heng Chen Regression properties for asymmetric generalized scale mixtures of multivariate Gaussian variables Communications in Statistics: Theory and Methods, 2007
- Y. Sun, V.K. Jandhyala, S.B. Fotopoulos Non-linear mixture models for cross-sectional financial log returns Journal of Statistical Computation and Simulation, 2006
- Venkata Jandhyala, Stergios Fotopoulos, Douglas Hawkins On the inconsistency of the change-point estimator for the NE family Metrika, 2006
- K. H. Chen, V. K. Jandhyala, S.B. Fotopoulos Nonlinear properties of multifactor financial models Review of Applied Economics, 2005
- Stergios Fotopoulos Type G and spherical distributions on ?<sup>d</sup> Statistics & Probability Letters, 2005
- Stergios Fotopoulos, Venkata Jandhyala Bessel inequalities with applications to conditional log returns under GIG scale mixtures of normal vectors Statistics & Probability Letters, 2004
- Stergios Fotopoulos Tempered distributions and their application in computing conditional moments for normal mixtures Statistics & Probability Letters, 2004
- Stergios Fotopoulos, Sung Ahn Rank based Dickey-Fuller test statistics Journal of Time Series Analysis / A Journal Sponsored by the Bernoulli Society for Mathematical Statistics and Probability, 2003
- Stergios Fotopoulos, Sung Ahn Rank based Dickey-Fuller test statistics Journal of Time Series Analysis / A Journal Sponsored by the Bernoulli Society for Mathematical Statistics and Probability, 2003
- Stergios Fotopoulos, Sung Ahn Rank based Dickey-Fuller test statistics Journal of Time Series Analysis / A Journal Sponsored by the Bernoulli Society for Mathematical Statistics and Probability, 2003
- Venkata Jandhyala, Stergios Fotopoulos, Douglas Hawkins Detection and estimation of abrupt changes in the variability of a process Computational Statistics and Data Analysis, 2002
- Venkata Jandhyala, Douglas Hawkins, Stergios Fotopoulos Erratum: Testing and locating variance changepoints with applications to stock prices Journal of American Statistics Association, 2002
- A. Papanicolaou, P. Diplas, N. Evaggelopoulos, S. Fotopoulos Stochastic incipient motion criterion for spheres under various bed packing conditions Journal of Hydraulic Engineering, 2002
- V.K. Jandhyala, S.B. Fotopoulos, D.M. Hawkins Testing and locating variance change-points with application to stock prices Journal of American Statistics Association, 2002
- V.K. Jandhyala, S.B. Fotopoulos, A.H. El-Shaarawi Change-point methods and their environmental applications Encyclopedia of Environmetrics, 2001
- Stergios Fotopoulos, Venkata Jandhyala Maximum likelihood estimation of a change-point for exponentially distributed random variables Statistics & Probability Letters, 2001
- V.K. Jandhyala, S.B. Fotopoulos Rate of convergence of the maximum likelihood estimate of a change-point Sankhya, 2001
- Stergios Fotopoulos, Lijian He The conditional variance for gamma mixtures of normal distributions Statistics, 2001
- S.B. Fotopoulos, V. K. Jandhyala The Weibull distribution: Theory and applications Encyclopedia of Environmetrics, 2001
- Sung Ahn, Stergios Fotopoulos, Lijian He Unit Root Tests with Infinite Variance Errors Econometric Reviews, 2001
- S.K. Ahn, S.B. Fotopoulos, L. He Unit root tests with infinite variance innovations Econometric Reviews, 2001
- Kevin Voss, Donald Stem Jr, Stergios Fotopoulos A comment on the relationship between coefficient alpha and scale characteristics Marketing Letters, 2000
- Venkata Jandhyala, Stergios Fotopoulos, Nicholas Evaggelopoulos A comparison of unconditional and conditional solutions to the maximum likelihood estimation of a change-point Computational Statistics and Data Analysis, 2000
- Stergios Fotopoulos Invariance principles for deconvolving kernel density estimation for stationary sequences of random variables Journal of Statistical Planning and Inference, 2000
- Stamatis Cambanis, Stergios Fotopoulos, Lijian He On the conditional variance for scale mixtures of normal distributions Journal of Multivariate Analysis, 2000
- D.A. Ioannidis, D.P. Papakonstantinou, S.B. Fotopoulos On the estimation of distribution from noisy observations in time series Asymptotics in Statistics and Probability, 2000
- Venkata Jandhyala, Stergios Fotopoulos Capturing the distributional behaviour of the maximum likelihood estimator of a changepoint Biometrika, 1999
- V. Jandhyala, S. Fotopoulos, N. Evaggelopoulos Change-point methods for Weibull models with applications to detection of trends in extreme temperatures Environmetrics, 1999
- Stergios Fotopoulos, Lijian He Error bounds for asymptotic expansion of the conditional variance of the scale mixtures of the multivariate normal distribution Annals of the Institute of Statistical Mathematics, 1999
- Stergios Fotopoulos Invariance principles for deconvoluting kernel density estimation Journal of Non-parametric Statistics, 1996
- S. Cambanis, S.B. Fotopoulos Conditional variance for stable random vectors Probability and Mathematical Statistics (Special volume commemorating the 100th anniversary of J. Neyman's birthday) Probability and Mathematical Statistics (Special volume commemorating the 100th anniversary of J. Neyman's birthday), 1995
- S. Fotopoulos, S. Ahn Strong approximation of the quantile processes and its applications under strong mixing properties Journal of Multivariate Analysis, 1994
- Stergios Fotopoulos, Sung Ahn STRONG APPROXIMATION OF THE QUANTILE PROCESSES AND ITS APPLICATIONS UNDER STRONG MIXING PROPERTIES Journal of Multivariate Analysis, 1994
- Stergios Fotopoulos, Sung Ahn Strong approximation of the quantile processes and its applications under strong mixing properties Journal of Multivariate Analysis, 1994
- S. Fotopoulos, D. Downham A note on the simple random walk in the plane Statistics & Probability Letters, 1993
- S. Fotopoulos, M. Wang Asymptotic normality for random sums of linear processes Journal of Statistical Planning and Inference, 1993
- Stergios Fotopoulos, S Cho, Sung Ahn Deviations between sample quantiles and empirical processes under absolute regular properties Journal of Non-parametric Statistics, 1993
- S. Fotopoulos, S. Cho, S. Ahn Deviations between sample quantiles and empirical processes under absolute regular properties Journal of Non-parametric Statistics, 1993
- S. Fotopoulos The exact approximation order of the random maximum of cumulative sums of independent variables Sequential Analysis, 1993
- S.B. Fotopoulos A note on the Doeblin-Levy-Kolmogorov-Rogozin inequality for concentration functions with stationary random variables Yokohama Mathematical Journal, 1992
- S.B. Fotopoulos On the rate of convergence for sequential density estimation Yokohama Mathematical Journal, 1991
- S. Fotopoulos On the speed of convergence of the distribution of random sums of weighted independent variables Sequential Analysis, 1991
- B.G. An, S.B. Fotopoulos, M.C. Wang Estimating the lead-time demand distribution for autocorrelated demand by the Pearson system and normal approximation Naval Research Logistics, 1989
- S.B. Fotopoulos Non-uniform estimates in the central limit theorem for random sums of independent random variables Yokohama Mathematical Journal, 1989
- Stergios Fotopoulos, Min-Chiang Wang, S. Rao Safety stock determination with correlated demands and arbitrary lead times European Journal of Operational Research, 1988
- D.Y. Downham, S.B. Fotopoulos Transient behavior of the range of a two-dimensional random walk Journal of Applied Probability, 1988
- J.R. Leslie, M.A. Stephens, S.B. Fotopoulos Asymptotic distribution of the Shapiro-Wilk W for testing for normality Annals of Statistics, 1986
- S.B. Fotopoulos, W.D. Ray Components of prediction errors for stationary processes with estimated parameters Journal of Time Series Analysis / A Journal Sponsored by the Bernoulli Society for Mathematical Statistics and Probability, 1983
- D. Downham, S. Fotopoulos Some aspects of the non-asymptotic behavior of a two-dimensional invasion process Journal of Applied Probability, 1981
- D. Downham, S. Fotopoulos Some inequalities on the distribution of ladder epochs Journal of Applied Probability, 1981
Books/Book Chapters
- Book Stergios Fotopoulos, Yuxing Luo Subordinated Gaussian processes, the log-return principles
- Book Chapter V.K. Jandhyala, S.B. Fotopoulos, N. Evaggelopoulos Trend analysis for environmental factors: Time effects on nitrous oxide (N2O) levels at Mace Head, Ireland
- Book Chapter S.B. Fotopoulos On the conditional variance-covariance matrix for stable random vectors, II
- Book S.B. Fotopoulos, N. Evaggelopoulos Business Statistics, Companion
Presentations
- Stergios B Fotopoulos Exact asymptotic distribution of change-point mle for change in the mean of Gaussian se-quences
- Stergios B Fotopoulos Change-point analysis, ladder heights and Gaussian random walks
- Stergios B Fotopoulos Change-point analysis, ladder heights and exponential random walks
- Stergios B Fotopoulos Change-point analysis for stochastic systems with Poisson inputs
- Stergios B Fotopoulos Change-point analysis under abrupt changes
- Stergios B Fotopoulos Change-point analysis under smooth changes for the univariate case
- Stergios B Fotopoulos The geometric convergence rate of the classical change-point estimate
- Stergios B Fotopoulos Estimation, Goodness-of-fit and change-point analysis for Weibull random variablesâ€”Application to minimum temperature data
- Stergios B Fotopoulos On the conditional variance for scale mixtures of normal distributions
- Stergios B Fotopoulos On the conditional variance for scale mixtures of normal distributions
- Stergios B Fotopoulos Conditional variance for stable random vectors
- Stergios B Fotopoulos Conditional moments for stable random vectors
- Stergios B Fotopoulos Conditional variance and higher than two conditional moments for stable random vectors
- Stergios B Fotopoulos Conditional variance for stable random vectors
- Stergios B Fotopoulos Some remarks on the customer's waiting time exceeding a fixed level
- Stergios B Fotopoulos Rates of convergence to normality for strictly stationary sequences of random variables
- Stergios B Fotopoulos Deviation between sample quantiles and empirical processes under absolute regular proper-ties
- Stergios B Fotopoulos The exact order of the random maximum of cumulative sums of independent variables
- Stergios B Fotopoulos The exact approximation order in the central limit theorem for weighted independent varia-bles
- Stergios B Fotopoulos Limiting behavior of weighted random sums of independent random variables
- Stergios B Fotopoulos Modeling the lead-time demand distribution by general autoregressive and moving average demand process
- Stergios B Fotopoulos On asymptotic normality for randomly stopped sums of autocorrelated random variables
- Stergios B Fotopoulos Some new developments for estimating lead-time demand distribution
- Stergios B Fotopoulos The rate of convergence for central limit theorem of random numbers of autocorrelated random variables
- Stergios B Fotopoulos Estimating the lead time demand distribution for autocorrelated demand by moments
- Stergios B Fotopoulos Moments of random sums of autocorrelated random variables
- Stergios B Fotopoulos Safety stock determination with correlated demands and arbitrary lead times
- Stergios B Fotopoulos On the number of self-avoiding random walks
- Stergios B Fotopoulos Self-avoiding random walks in irregular lattices
- Stergios B Fotopoulos A model in carcinogenesis
Conference Proceedings
- S.B. Fotopoulos, V.K. Jandhyala, T. Li Asymptotic distribution and rate of convergence of change-point mle under contiguity
- S.B. Fotopoulos, V.K. Jandhyala, Y. Liu Estimation of multiple change-points in linear Brownian processes
- S.B. Fotopoulos, V.K. Jandhyala, E. Khapalova Change-point analysis for global mean precipitation
- S.B. Fotopoulos, V.K. Jandhyala, E. Khapalova Change-point mle for exponential sequences with applications to Indonesian seismological data
- S.B. Fotopoulos, V.K. Jandhyala, T. Li Asymptotic theory for the maximum likelihood estimate of the change-point under contiguity
- S.B. Fotopoulos, V.K. Jandhyala, E. Khapalova Change-point analysis for stochastic systems with Poisson inputs
- S.B. Fotopoulos, V.K. Jandhyala, E. Khapalova Change-point analysis, ladder heights and Gaussian random walks
- S.B. Fotopoulos, V.K. Jandhyala, T. Li Asymptotic study of the maximum likelihood estimator of a change-point under smooth changes in multivariate Gaussian families
- S.B. Fotopoulos, X. Hu, C. Munson Purchasing decisions under stochastic price: Approximate solutions for order time, order quantity and supplier
- Stergios Fotopoulos, Venkata Jandhyala, Kim Chen A generalized version of the APT model: Nonlinear regression under scale mixtures Proceedings - Annual Meeting of the Decision Sciences Institute
- S.B. Fotopoulos, K.H. Chen On the conditional security return value with random volatility
- Sung Ahn, Stergios Fotopoulos A Study of Rank Based Unit Root Tests
- S.B. Fotopoulos Recent advances for deconvolving kernel density estimation under stationary sequences of random variables Department of Mathematics, University of Patras
- S.B. Fotopoulos, S.K. Ahn Tests for unit roots: A review and new results
- Sung Ahn, Stergios Fotopoulos Tests for Unit Roots: A Review and New Results
- S.B. Fotopoulos, K.E. Voss, D.E. Stem On the behavior of coefficient alpha: A comment on the relationship between alpha and the number of items in the scale
- S.B. Fotopoulos, H.M. Kim Characterization study of a stochastic process associated with waiting times in queuing systems
- S.B. Fotopoulos, H.M. Kim Statistical characterization of input processes in queuing systems
- S.B. Fotopoulos, B.G. An, M.C. Wang Modeling the lead-time demand distribution by a general auto-regressive and moving average demand process
- S.B. Fotopoulos, M.C. Wang Some new developments for estimating lead-time demand distribution
- S.B. Fotopoulos, M.C. Wang Estimating the lead time demand distribution for auto-correlated demand by moments
- S.B. Fotopoulos, M.C. Wang, S.S. Rao Safety stock determination when demands are correlated and arbitrary lead times