Don G Wardell
  • Francis A. Madsen Scholar & Professor, Ois Operations & Info Systems, David Eccles School of Business
  • Professor, Ois Operations & Info Systems

Research Statement

The majority of the research that I have completed and continue to pursue falls under the broad umbrella of quality management, with particular emphasis on statistical process control (SPC).    I became interested in this work as a doctoral candidate, where I sought to fine methods to improve processes by modeling them mathematically.  SPC is an ideal tool for process improvement.  As I learned more, I realized that many actual processes, especially in the process industries, generate data that do not meet the assumptions of traditional SPC.  Hence much of my work has questioned some of the traditional assumptions of SPC and what should be done if those assumptions are not met.  Questioning assumptions has required that I investigate the underlying probability distributions of statistics plotted on SPC charts, especially Shewhart charts.  Much of my work, then, also involves the derivation of new probability distributions and/or their first and second moments.

 

More recently I have worked on projects related to quality function deployment, quality management in non-profit environments, employee scheduling, experience management and scripting.  In addition, because of my teaching successes and at the encouragement of the former chair of the department, I have begun to write more about teaching methods and innovations.

 

I believe that my published research, especially the papers related to control charts applied to autocorrelated data, have had a strong impact on the academic community.   My dissertation was honored twice, first as the winner of the best dissertation competition of the Production and Operations Management Society in 1991; and second as a runner up (one of the top three) in the Decision Sciences Institute dissertation competition, also in 1991. 

 

I was honored again when “Run Length Distributions of Special-Cause Control Charts for Correlated Processes,” was the invited Technometrics presented paper at the Fall Technical Conference of the American Statistical Association and the American Society for Quality Control in 1993.  In 2004, this same paper was recognized as the most cited Technometrics paper appearing in the 1994 volume (ASQ Statistics Division Newsletter, Vol. 23, No. 2).  Moreover, I have been invited to contribute an article on monitoring correlated data in SPC for the Encyclopedia of Quality and Reliability (2007, pp 145-150) published by J. Wiley & Sons.

 

Presentations

  • Liana Victorino, & Mike Dixon, Don Wardell, Rohit Verma. (2019) 'A Customer’s Perspective to Scripting Alignment. , Presented, 2019.
  • Liana Victorino, & Michael Dixon, Don Wardell and Rohit Verma. (2018) A Customer’s Perspective to Script Usage across a Sequence of Encounters . , Presented, 2018.
  • DON G WARDELL, & Shane Schvaneveldt. (2018) What Faculty Should (But Don’t) Know About Statistical Process Control. , Presented, 2018.
  • Liana Victorino, & Michael Dixon, Don Wardell, Rohit Verma. (2017) The Sequence of Scripting. , Presented, 2017.
  • Liana Victorino, & Michael Dixon, Don Wardell, Rohit Verma. (2017) The Sequence of Scripted Service Encounters. , Presented, 2017.

Geographical Regions of Interest

  • Central America

Publications

  • Liana Victorino (date unknown). Can customers detect script usage in service operations? An experimental video analysis. Journal of Service Research. Vol. 15, 390-400. Accepted, .
  • Weiyu Tsai (date unknown). An Interactive Excel VBA Example for Teaching Statistics Concepts. INFORMS Transactions on Education. Vol. 7. Accepted, .
  • Ding, Xin, Xin Ding and Rohit Verma (date unknown). An Assessment of Statistical Process Control-Based Approaches for Charting Student Evaluation Scores. Decision Sciences Journal of Innovative Education. Vol. 4, 259-272. Accepted, .
  • Weiyu Tsai (date unknown). Creating Individualized Data Sets for Student Exercises Using Microsoft Excel and Visual Basic. INFORMS Transactions on Education. Vol. 7. Accepted, .
  • Pullman, M. and Moore, W. (date unknown). A Comparison of Quality Function Deployment and Conjoint Analysis In New Product Design. Journal of Product Innovation Management. Vol. 19, 354-364. Accepted, .
  • (date unknown). 'Reply' to Comment by R. L. Berger and B. W. Coutant. The American Statistician. Vol. 55, 85. Accepted, .
  • (date unknown). Small Sample Interval Estimation of Bernoulli and Poisson Parameters. The American Statistician. Vol. 51, 321-325. Accepted, .
  • M. R. Candia (date unknown). Statistical Process Monitoring of Customer Satisfaction Survey Data. Quality Management Journal. Vol. 3, 36-50. Accepted, .
  • H. Moskowitz and R. D. Plante (date unknown). 'Response' to Yashchin Letter to the Editor. Technometrics. Vol. 37, 243-245. Accepted, .
  • H. Moskowitz and R. D. Plante (date unknown). Run Length Distributions of Special-Cause Control Charts for Correlated Processes. Technometrics. Vol. 36, 3-17. Accepted, .
  • H. Moskowitz and R.D. Plante (date unknown). Run Length Distributions of Residual Control Charts for Autocorrelated Processes. Journal of Quality Technology. Vol. 26, 308-317. Accepted, .
  • H. Moskowitz and R. D. Plante (date unknown). Rejoinder to Discussions by Adams, Woodall and Superville, Fellner, and Lucas of 'Run Length Distributions of Special-Cause Control Charts for Correlated Processes'. Technometrics. Vol. 36, 23-27. Accepted, .
  • H. Moskowitz and R. D. Plante (date unknown). The Use of Run Length Distributions of Statistical Process Control Charts to Detect False Alarms. Production and Operations Management. Vol. 3, 217-239. Accepted, .
  • H. Moskowitz and R.D. Plante (date unknown). Control Charts in the Presence of Data Correlation. Management Science. Vol. 38, 1084-1105. Accepted, .
  • Liana Victorino, Rohit Verma and Don Wardell (date unknown). Script Usage in Standardized and Customized Service Encounters: Implications for Perceived Service Quality. Production and Operations Management. Vol. 26, 518–534. Accepted, .
  • David Ding, Paul Hu and Rohit Verma (date unknown). The Impact of Service System Design and Flow Experience on Customer Satisfaction in Online Financial Services. Journal of Service Research. Vol. 13, 96-110. Accepted, .
  • Chesteen, S., Helgheim, B., and Randall, T. (date unknown). Comparing quality of care in non-profit and for-profit nursing homes: A process perspective. Journal of Operations Management. Vol. 23, 229-242. Accepted, .
  • Liana Victorino, Rohit Verma (date unknown). Service Scripting: A Customer’s Perspective of Quality and Performance. (pp. 4-13). Vol. 8 No. 20. Cornell Center for Hospitality Research. Accepted, .
  • (date unknown). Autocorrelated Data. (pp. 145-150). Encyclopedia of Statistics in Quality and Reliability. Accepted, .
  • Goodale, J. C. (date unknown). Service level and routing in M/M/s systems. (pp. 169-171). Proceedings of the 2000 Annual Meeting of the Midwest Decision Sciences Institute. Accepted, .