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A. Erhan Mergen, Ph.D.

Decision Sciences
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A. Erhan Mergen, Ph.D.

Professor

Contact Information

Office Location: LOW-2329
Office Phone: 585-475-6143
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Staff Assistant Phone: 585-475-6057
Fax: 585-475-5975

Office Hours

Monday and Wednesday 10:00AM—11:00AM;
Tuesday 11:00AM—12:00noon;and by appointment.

Biography

A. Erhan Mergen is a professor of Decision Sciences. He holds a Ph.D. in Administrative and Engineering Systems; M. Sc. in Industrial Administration; and a B.Sc. in Management. Dr. Mergen's main interest is in statistical quality control and application of quantitative techniques to production and operations management. He teaches graduate and undergraduate courses in quality control, operations management, and quantitative methods. He has published many articles and presented papers in academic and professional meetings in the area of statistical quality control (SQC). His papers have appeared in journals such as the Journal of Applied Statistics, Quality and Reliability Engineering, Quality Engineering, Quality, Total Quality Management, Simulation and Gaming. He has also served as a referee for Quality and Reliability Engineering; Management Science; and The American Statistician journals. He is a member of the American Society for Quality (ASQ - formerly ASQC); Beta Gamma Sigma, The National Scholastic Honorary Society; Sigma Xi, The Scientific Research Society; and the International Institute of Forecasters. He is also a member of editorial board of the Quality Engineering journal and Total Quality Management & Business Excellence journal. Between 1982-’84, prior to joining RIT, Dr. Mergen also conducted seminars on SQC for private and public industrial groups overseas, sponsored by the United Nations Industrial Development Organization. He is periodically involved in SQC consulting and training seminars through Stochos, Inc., a consulting firm located in Duanesburg, N.Y.

Education

  • Ph.D, Administrative and Engineering Systems, Union college, Schenectady, NY, 1981
  • M.S., Industrial Administration, Union College, Schenectady, NY, 1978
  • B.S., Management, Middle East Technical University, Ankara, Turkey, 1975

Experience

  • Consultant in quality control projects -- Stochos, Inc., Schenectady, NY, 1984-1984
  • Assistant Professor, Dept. of Management -- Middle East Technical University, Ankara, Turkey, 1982-1984
  • Instructor, Dept. of Management -- Middle East Technical University, Ankara, Turkey, 1981-1982
  • Market Analyst. -- Fenni Gama, Domestic and International Trade Corporation, Ankara, Turkey, 1975-1976

Expertise [expertise maps]

  • Operations management
  • Quality control

Professional Memberships

  • American Society for Quality
  • Beta Gamma Sigma Honorary Society
  • International Institute of Forecasters
  • Member of the editorial board of the Quality Engineering journal since 1999
  • Member of the editorial board of theTotal Quality Management & Business Excellence journal since 2011
  • Member of the Turkish Statistical Association and an Associate Editor of the Istatistik, an international journal of the Turkish Statistical Association since 1998.
  • National Association of Purchasing Management
  • Sigma Xi, The Scientific Research Society

Awards

  • Induction to Beta Gamma Sigma, Beta Gamma Sigma, 1989
  • RIT Special Services Award, RIT, 1988

Research Interests & Research in Progress

  • Developing new Statistical quality control techniques and revising the existing techniques to improve their performance. Lately I have been involved in research in multivariate statistical process control methods. Some of my current research projects are: "Assessment of Acceptance Sampling Plans Using Posterior Distribution" “Autocorrelation Issue in Statistical Process Control” “A Rationalization of constants h and k used in Modified Cumulative Sum Schemes” “Signal to Noise Ratio" "Using Parabolic Limits on Cumulative Sum Control Charts and the Average Run Length" "Computing Seasonal Relatives" "Modified Acceptance Charts" "Use and Abuse of the Ratios in Decison Making"

Publications


Refereed Journal Articles

  • Discipline-based Scholarship, Equal Author, Quality Engineering -- "Using SPC in Conjunction with APC", with D. S. Holmes, 360-364, September, 2011
  • Discipline-based Scholarship, Equal Author, Total Quality Management & Business Excellence -- “Analysis of the Use of Ratios for Process Management and Decision-Making” ,with D.S. Holmes, 787-794, July, 2011
  • Discipline-based Scholarship, Equal Author, Journal of Applied Statistics -- "Assessment of Acceptance Sampling Plans Using Posterior Distribution for a Dependent Process", with S. Deligonul, 299-307, February, 2010
  • Discipline-based Scholarship, Equal Author, Total Quality Management and Business Excellence -- “Towards the Use of Six Sigma in Software Development”, with D. Grant, 705-712, July, 2009
  • Discipline-based Scholarship, Equal Author, Total Quality Management and Business Exellence -- "Can't Fix Service Quality? Read This", with W. Stevenson, 681-686, June, 2009
  • Discipline-based Scholarship, Equal Author, Turkish Studies -- Analysis of Attitudes of Turkish Citizens Towards the Effect of European Union Membership on the Economic, Political, and Cultural Environment, with B. Aybar, V. Perotti, D. Reid, 329-348, September, 2007
  • Contributions to Practice, Equal Author, Total Quality Management and Business Excellence. -- Teaching Six Sigma Concepts in a Business School Curriculum, with W. Stevenson, 751-756, July, 2006
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- Identifying Need for New Factors in EVOP, with Donald S. Holmes, 219 - 224, 2006
  • Discipline-based Scholarship, Equal Author, The American Association of Pharmaceutical Scientists (AAPS) Journal - formerly AAPS PharmSci). -- Effect of Multivariate Process Instability on Principal Component Analysis - A Case Study,, with D. S. Holmes, E106 - E117, April 29, 2005
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- A Multivariate Subgroup Rationality Test, with D. S. Holmes, 657-662, July, 2004
  • Contributions to Practice, Equal Author, Total Quality Management -- A Comparative Analysis of Quality Management in US and International Universities, with S. Widrick and D. Grant, June, 2004
  • Contributions to Practice, Equal Author, Istatistik, The Journal of the Turkish Statistical Association -- A Supplemental Approach to Analyzing Trade Data, with M. Bear, 28-39, 2003
  • Contributions to Practice, Equal Author, Total Quality Management -- Sowing the Seeds of Quality: Quality at the Source, with W. Stevenson, 1015-1020, November, 2002
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- Variation Charts for Multivariate Processes, with W. Levinson and D.S. Holmes, 539-545, June, 2002
  • Contributions to Practice, Equal Author, Total Quality Management -- Measuring the Dimensions of Quality in Higher Education, with D.Grant and S.Widrick, 123-131, 2002
  • Contributions to Practice, Equal Author, Total Quality Management -- Quality Management in U.S. Higher Education, with D. Grant and S. Widrick, 207-215, 2002
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- Measuring Process Performance for Multiple Variables-Revisited, with D.S.Holmes, 661-665, June, 2001
  • Discipline-based Scholarship, Equal Author, Istatistik-Journal of the Turkish Statistical Association -- A Tool to Monitor Processes, with D.S.Holmes, 21-28, 2001
  • Discipline-based Scholarship, Equal Author, Quality Digest -- Building and Acceptance Chart, with D.S.Holmes, 35-36, June, 2000
  • Contributions to Practice, Equal Author, Total Quality Management -- Quality Management Applied to Higher Education, with D.Grant and S.Widrick, 345-352, 2000
  • Discipline-based Scholarship, Equal Author, Quality and Reliability Engineering, International Journal -- EWMA Acceptance Charts, with D.S.Holmes, 1-4, 2000
  • Discipline-based Scholarship, Equal Author, Istatistik-Journal of the Trukish Statistical Association -- Process Performance Measures When Process Distribution is Non-Normal, with D.S.Holmes, 165-174, 2000
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- Running a Process with Poor Capability, with D.Wen, 505-509, June, 1999
  • Discipline-based Scholarship, Equal Author, Quality Engineering -- Measuring Process Performance for Multiple Variables, with D.S.Holmes, 55, 1999
  • Equal Author, Quality Engineering -- Multivariate Test For Randomness, with D.S.Holmes, 505, 1998
  • Equal Author, Istatistik, Journal of the Turkish Statistical Association -- Lot Quality Distribution for Autocorrelated Data, with D.S.Holmes, 43, 1998
  • Equal Author, Quality Engineering -- Process Acceptance Charts for Short Runs, with D.S.Holmes, 149, 1997
  • Equal Author, Information Technology and People -- Applying Quality to Leavitt's Framework to solve Information Technology Problems: A Case Study, with D. Grant, 47, 1996
  • Equal Author, Quality and Reliability Engineering, International -- An Alternative Method to Test for Randomness of a Process, with D.S.Holmes, 171, June, 1995
  • Equal Author, Quality Engineering -- Indentifying the Sources for Out-of-control Signals When T2 Control Chart is Used, with D.S.Holmes, 137, 1995
  • Sole Author, Journal of Economics and Administrative Sciences, -- Total Quality Management, 25, 1994
  • Equal Author, Quality Engineering -- Improving the Performance of T-square Control Chart, with D.S.Holmes, 619, 1993
  • Equal Author, Simulation and Gaming -- Modeling Total Quality Elements into a Strategy-Oriented Simulation, with T.Pray, 277, September, 1992
  • Equal Author, Quality Engineering -- Parabolic Control Limits for the Exponentially Weighted Moving Average Control Chart, with D.S.Holmes, 487, 1992
  • Equal Author, Quality Engineering -- A Discussion of the Unit of Calibration Required for a Gauge, with D.S.Holmes, 1, 1991
  • Equal Author, Quality and Reliability Engineering, International -- The Dynamic Histogram Chart, with D.S.Holmes, 107, May, 1990
  • Equal Author, Quality and Reliability Engineering, International -- Testing Control Chart Subgroups for Rationality, with D.S. Holmes, 143, June, 1989
  • Equal Author, Quality and Reliability Engineering, International -- Proper Subgroup Size for Statistical Process Control, with D.S. Holmes, 339, October, 1988
  • Equal Author, Quality and Reliability Engineering, International -- A Managerial Tool for Process Capability Analysis, with D.S. Holmes, 63, 1988
  • Equal Author, Journal of Applied Statistics -- Dependence Bias in Conventional p-Charts and its Correction with an Approximate Lot Quality Distribution, with Z.S.Deligonul, 75, March, 1987
  • Equal Author, Quality -- A Good Tool for Process Control: The Cumulative Sum Chart, with D.S Holmes, 71, February, 1987
  • Equal Author, Quality -- Chi-Square vs. X-bar and R Chart, with D.S. Holmes, 60, 1986

Refereed Conference Proceedings

  • Discipline-based Scholarship, Equal Author, The 2012 Northeast Decision Sciences Institute Meeting Proceedings, Newport, RI -- Control Limits versus Acceptance Limits: Which Limits are Appropriate for Your Task?, with D.S. Holmes, 415-421, March, 2012
  • Discipline-based Scholarship, Equal Author, The North East Decision Sciences Institute Annual Meeting Proceedings, Montreal, Canada -- Discussion of Parabolic Mask for Cumulative Sum Control Charts, with Donald S. Holmes, 1295-1300, April, 2011
  • Discipline-based Scholarship, Equal Author, The North East Decision Sciences Institute Annual Meeting Proceedings, Alexandria, VA -- Building an Acceptance Chart Around the Process Mean, with Donald S. Holmes, 563-568, March, 2010
  • Discipline-based Scholarship, Equal Author, The 2009 Northeast Decision Sciences Institute Annual Meeting Proceedings, Uncasville, CT -- Use of Acceptance Charts in the Six Sigma Environment, with Donald S. Holmes, 443-448, April, 2009
  • Discipline-based Scholarship, Equal Author, The 2008 Northeast Decision Sciences Institute Annual Meeting Proceedings, New York New York -- An Alternative Method to Test the Residuals in a Regression Model, with Donald S. Holmes, 679-684, March 28, 2008
  • Discipline-based Scholarship, Equal Author, The 2007 Northeast Decision Sciences Institute Annual Meeting Proceedings, Baltiomre, Maryland -- "Using Descriptive Statistics in Statistical Process Control", with Donald S. Holmes, 566-571, March 30, 2007
  • Discipline-based Scholarship, Equal Author, The 2006 North East Decision Sciences Institute Annual Meeting Proceedings, San Juan, Puerto Rico -- “Multivariate Control Charts for Attribute Data”, with Donald S. Holmes, 500-505, March 31, 2006
  • Discipline-based Scholarship, Equal Author, The 2005 North East Decision Sciences Institute Annual Meeting Proceedings, Philadelphia, PA -- "Integrating Several Variance Estimators", with D. S. Holmes, March, 2005
  • Discipline-based Scholarship, Equal Author, The 2004 Northeast Decision Sciences Institute Annual Meeting Proceedings, Atlantic City, NJ -- “Estimating Potential Capability of an Unstable Process”, with D. S. Holmes, 290-292, March, 2004
  • Discipline-based Scholarship, Equal Author, The 2003 North East Decision Sciences Institute Annual Meeting Proceedings, Providence, RI -- Testing Rationality of Subgroups in Multivariate Control Charts, with D.S. Holmes, 286-288, March, 2003
  • Discipline-based Scholarship, Equal Author, The 2002 North East Decision Sciences Institute Annual Meeting Proceedings, San Juan, Puerto Rico -- Acceptance Charts for Low Data Environment, with D.S. Holmes, 273-275, March, 2002
  • Contributions to Practice, Equal Author, CMA 2001 Conference, Antalya, Turkey -- Modeling in Statistical Process Control, 113-115, December, 2001
  • Contributions to Practice, Equal Author, The 2001 Northeast Decision Sciences Institute Annual Meeting Proceedings, Pittsburgh, PA -- Some Issues in Statistical Process Control, with D.S.Holmes, 263-265, March, 2001
  • Contributions to Practice, Equal Author, Proceedings of the IACIS 1999 Conference, San Antonio, TX -- An Analysis of Quality Management Approaches in Higher Education, with D.Grant and S.Widrick, 70-76, October, 1999
  • Contributions to Practice, Equal Author, The 1999 Northeast Decision Sciences Institute Annual Meeting Proceedings, Newport, RI -- Analyzing Balance of Trade Data Using Statistical Process Control Techniques, with Marca M.Bear, 73-75, March, 1999
  • The 1998 Northeast Decision Sciences Institute Annual Meeting Proceedings, Boston, MA -- A Problem with Attribute Control Chart When the Sample Size is not Constant, with F.Erginbilgic, 311-313, March, 1998
  • Equal Author, The Bulletin of the International Statistical Institute, 51 Session, Istanbul, Turkey -- Testing the Dispersion Matrix for Stability, with D.S.Holmes, Book 2, 605-606, August, 1997
  • The 1997 Northeast Decision Sciences Institute Annual Meeting Proceedings, Annapolis, MD -- Problems with Non-Normal Distributions and Process Performance Measures, with D.S.Holmes, 299-301, April, 1997
  • The 1996 Northeast Decision Sciences Institute Annual Meeting Proceedings, St.Croix, Virgin Islands -- A Management Tool for Process Evaluation, with D.S.Holmes, 527-529, April 17, 1996
  • The 1995 Northeast Decision Sciences Institute Annual Meeting Proceedings, Providence, RI -- Control Charts for Some Special Production Settings, with D.S.Holmes, 466-468, March 22, 1995
  • The Operations Research and Industrial Engineering XVth National Congress Transactions, Istanbul, Turkey -- Testing the Randomness of a Process, 237-239, July 7, 1993
  • Equal Author, Developments in Business Simulation and Experiential Exercises -- Modeling Total Quality Elements into a Strategy-Oriented Simulation, with T. Pray, 114-121, 1992
  • 47th Annual Quality Control Transactions, Rochester Section, Rochester, NY -- A new Control Chart for Short Production Runs, with D.S.Holmes, 111-119, March, 1991
  • The 1988 Northeast Decision Sciences Institute Annual Meeting Proceedings, New Port, RI -- Selecting Acceptance Sampling Plans by Expected AOQ, with D.S. Holmes, 177-179, March, 1988
  • ASQC 40th Quality Congress Transactions, Anaheim, CA -- Lot Quality Distribution for Dependent Processes, with D.S. Holmes, 264-268, May, 1986
  • The 1986 Northeast American Institute for Decision Sciences Proceedings, Williamsburg, VA -- An Average Value Scale for Cumulative Sum Controls Charts, with D.S. Holmes, 286-287, March, 1986
  • Middle East Technical University Studies in Development -- Dependence v.s. Independence Assumptions in Statistical Quality Control, 55, 1982

Other

  • Contributions to Practice, Equal Author, Quality Magazine -- Signal to Noise Ratio - What is the Right Size?, with Donald S. Holmes, August 28, 2007
  • Contributions to Practice, Equal Author, QC Report -- Should You Use Acceptance or Modified Control Charts? (part 2), with D.S.Holmes, May, 2000
  • Contributions to Practice, Equal Author, QC Report -- Should You Use Acceptance or Modified Control Charts? (part 1), with D.S.Holmes, February, 2000
  • Contributions to Practice, Equal Author, QC Report -- Data Precision-Do You Have Enough?, with D.S.Holmes, 2-4, October, 1999
  • Equal Author, QC Report -- Z-Cp Chart: A Managerial Tool for Process Capability Analysis, with D.S. Holmes, 1989
  • Equal Author, QC Report -- Chi-Square vs. X-bar and R Chart, with D.S.Holmes, 1988
  • Equal Author, QC Report -- The Cumulative Sum Chart: A Good Tool for process Control, with D.S. Holmes, 1987

Unpublished Conference Presentations

  • Statistical Process Control and Acceptance Charts, The 60th Annual North East Quality Council Conference, Oct.14-15, 2008, 2008
  • “Analysis of Attitudes of Turkish Citizens toward the effect of European Union (EU) Membership on the Business Climate” , The 2004 AIB Annual Meeting., 2004
  • "Identifying the Key Variables Using Factor Extractor", The 48th Annual North East Quality Council Conference, Oct. 5-7, 1994., 1994
  • "Statistical Process Control Analysis of Partial Size Distributions," , The 3rd International Ceramic Science and Technology Congress November 1-4, 1992., 1992
  • Modeling Total Quality into Business Simulations - A Demonstration, ABSEL Meeting, Nashville, TN, April 3-5, 1991., 1991

Consulting

  • UYTES, Inc., 1995 to present, Ankara, Turkey, Three-day training seminar for quality engineers from various companies in basic and advanced statistical process control techniques. This seminar has been repeated annually since 1995., 0 - Ongoing