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Supply Chain Management

Instructor Biographies

Please review the information below to learn more about our instructors.

Full Course Instructors

Richard J. Titus, Jr.

Robert J. Trent, Ph.D.

Zach Zacharia, Ph.D.

Enrichment Module Instructors

David Hinrichs

Douglas Mahony, Ph.D.

Gregory L. Schlegel CPIM, CSP, Jonah

Samuel C. Weaver, Ph.D.

Richard J. Titus, Jr.

Rich Titus is a Six Sigma and Lean Enterprise consultant and faculty member at Lehigh University.  He is also a Ph.D. candidate in the Industrial Engineering Department at The Pennsylvania State University, University Park, PA.  Rich earned his Bachelor of Science degree in industrial engineering in 1981 from Lehigh University and his Master’s degree Manufacturing Systems Engineering in 1986 from Lehigh University.  He conducted post-graduate work in Industrial Engineering from 1995-2002. 

Rich’s teaching experience includes operations management, total quality, organizational behavior, transportation and logistics, database design, simulation, Six Sigma Methods and Applications, and lean applications.

Rich has extensive industry experience.  He was hired by Ingersoll-Rand in 1981 as a Program Member for the Management Training Program.  During his tenure at Ingersoll-Rand he served as a process planning supervisor; a manufacturing systems supervisor; task team member responsible for selecting, developing, and implementing an ERP system for Ingersoll-Rand’s Phillipsburg facility; materials manager directing the efforts of approximately 20 purchasing and inventory professionals responsible for over $70 million in purchases/year; manufacturing manager with responsibilities for directing machine shop operations, shop scheduling, assembly and testing; and contracts and engineering manager with responsibilities for sales and customer interfaces and developing the bills of materials, product specifications and drawings for each customer order. 

A certified Black Belt, Rich continues to work with a number of organizations training and supporting their Six Sigma Process improvement efforts, Lean Enterprise and the Balanced Scorecard.  He provides instruction, project, and program support for Green and Black Belt candidates for a number of organizations in a variety of industries including defense, energy and consumer products.  Improvement projects for these organizations are focused on areas which include risk analysis for sales and marketing; cycle time improvements for variety of support service processes; design of experiments for process optimization; human resources; supply chain design; inventory management; safety and worker’s compensation; sales and marketing; information systems with an emphasis on end user effectiveness and efficiency; measurement systems analysis for service and manufacturing; manufacturing defect reduction on a variety of assembly and testing processes.  Rich also creates and provides training for the introduction and application of Lean Enterprise solutions and includes the use of these techniques to complement Six Sigma project solutions.  

Robert J. Trent, Ph.D. Robert Trent Bio Picture

Dr. Robert Trent is the co-director of the Center for Value Chain Research and the supply chain management program director at Lehigh University, where he teaches at the undergraduate and graduate levels.  He holds a B.S. degree in materials logistics management from Michigan State University, an M.B.A. degree from Wayne State University, and a Ph.D. in purchasing/operations management from Michigan State University.

Prior to his return to academia, Bob worked for the Chrysler Corporation.  His industrial experience includes assignments in production scheduling, packaging engineering with responsibility for new part packaging set-up and the purchase of nonproductive materials, distribution planning, and operations management at the Boston regional parts distribution facility.  He has also worked on numerous special industry projects.  Bob stays active with industry members through research projects, consulting, and training services.  He has consulted with or provided training services to over 40 government agencies and corporations and has worked directly with companies on dozens of research visits. 

Bob has authored or coauthored dozens of articles appearing in business publications.  He has also made presentations at numerous conferences and seminars.  His coauthored study on cross-functional sourcing team effectiveness was published through the CAPS Research in 1993; a coauthored research report on purchasing/sourcing trends was published through CAPS in 1995; a third CAPS project that investigated how organizations reduce the effort and transactions required to purchase low value goods and services was published in 1999; a coauthored CAPS Research study on global sourcing was published in 2006; and a coauthored study on risk management was published by CAPS in 2012.  He is also the coauthor of a textbook titled Purchasing and Supply Chain Management and the author of the book Strategic Supply Management—Creating the Next Source of Competitive Advantage.  His book, End-to-End Lean Management—A Guide to Complete Supply Chain Improvement was published in 2008.  Another book, Managing Global Supply and Risk—Best Practices, Concepts, and Strategies,” coauthored with Lew Roberts, was published in 2009.  His latest book, Next-Level Supply Management Excellence—Your Straight to the Bottom Line Roadmap, co-authored with Robert Rudzki, was published in 2011.

Since arriving at Lehigh University Bob has been awarded the Class of 1961 Professorship, the Eugene Mercy Professorship, and the George N. Beckwith Professorship.  He and his family reside in Lopatcong Township, New Jersey.

Zach Zacharia, Ph.D. Zach Zazharia Bio Picture

Dr. Zach G. Zacharia is a faculty member within the College of Business and Economics, Lehigh University where he teaches undergraduate courses in Supply Chain Operations Management and Logistics and Transportation.  He graduated with a B.S. in Mechanical Engineering from the University of Calgary, an MBA from the University of Alberta, and a Ph.D. in Logistics with a minor in Marketing from the University of Tennessee.  His current research interests include collaboration within the supply chain, supplier satisfaction, and the financial implications of supply chain management.

Zach worked for the Department of Transportation in Alberta, Canada for ten years as an equipment engineer and at the University of Tennessee, Center for Transportation Research for six years as an Associate Director.  He is a principal in BZS Consulting, which primarily focuses on evaluating collaboration and procurement strategies across firms in a supply chain.

Zach’s publications include articles in the Journal of Operations Management, the Journal of Business Logistics, and articles in the Journal of Retailing, Journal of Business and Industrial Marketing, Marketing Management, Journal of International Technology and Information ManagementJournal of Vehicle Design and Wall Street Journal.  As a member of a Supply Chain Research Group at the University of Tennessee he co-authored a book Supply Chain Management (Sage Publications, December 2000).  Zach recently contributed a chapter on logistics service providers and new product development in Managing Innovation: The New Competitive Edge for Logistics Service Providers, Stephan M. Wagner ed.Kuehne Foundation Book Series (2007).

Among the awards that Zach has received are the Best Paper Finalist from the Journal of Operations Management, Best Paper Award from North American Research/Teaching Symposium on Purchasing and Supply Chain Management, Outstanding Student Paper Award from the Society for Marketing Advances, and Doctoral Dissertation Proposal Award from the University of Arkansas.

David Hinrichs David Hinrichs Bio Picture

Dave Hinrichs is currently a member of the accounting faculty at Lehigh University teaching courses in the undergrad accounting program as well as two of the core courses in Lehigh’s MBA program.  Prior to joining Lehigh’s faculty, he served in a variety of financial management positions in the steel, cement, and battery industries.  Dave is a CPA, and received his undergraduate degree in accounting from the University of North Dakota.  He also received an MBA and an MS in the Management of Technology from Lehigh University.





Douglas Mahony, Ph.D. Douglas Mahony

Doug Mahony is currently an assistant professor of Management at the College of Business and Economics, Lehigh University. Professor Mahony has published widely in the areas of high performance work systems and alternative dispute resolution.  For the last 15 years Mahony has been doing consulting and providing executive education for numerous companies, law firms, and non-profit organizations. His current research and consulting interests focuses on the integration of business strategy, human resource management systems, workforce analytics, and organizational performance.




Gregory L. Schlegel CPIM, CSP, Jonah Gregory Schlegel Bio Picture

Greg is presently the vice president of Business Development/Principal for Shertrack LLC. He has been a supply chain executive for over 25 years with several Fortune 100 companies and spent seven years as an IBM global supply chain Executive Consultant.  He has presented papers on supply chain management, risk management, lean/Six Sigma and theory of constraints throughout the U.S. and around the globe.  Greg was APICS’ 1997 International Society President.  He is well published and is a frequent speaker at conferences, seminars, webinars, and professional dinner meetings.  He currently serves on the APICS Strategic Direction Committee, has been on the Editorial Board for DC Velocity magazine, has been an IBF Demand Management/Forecasting certification instructor and has taught supply chain and operations management at the University of Scranton.  He has also been a guest lecturer at ASU, St John’s University, and Rutgers. Greg is certified CPIM, CSP in systems and a Theory of Constraints certified Jonah.  Greg holds a B.S. in Operations Research and Computer Science from Penn State University and did his graduate work at Lake Forest College. He presently supports in various capacities the Lehigh University supply chain program and Center for Value Chain Research.

Samuel C. Weaver, Ph.D. Samuel Weaver Bio Picture

Sam Weaver earned a Ph.D. in Finance and Economics from Lehigh University in 1985.  He joined the full-time faculty at Lehigh in January 1998 and was appointed Director MBA and Professional Education in 2003 through 2005.  Prior to 1998, Sam was the Lauer Adjunct Professor of Finance at Lehigh University (1986-1997) and the Director, Financial Planning and Analysis at Hershey Foods Corporation for almost 20 years.  That position combined the theoretical with the pragmatic and involved the analysis of many different facets of finance including: mergers and acquisitions, divestiture assessment, strategic planning, performance measurement, operational plans, industry group comparisons, alternative financing evaluations, dividend policy, capital expenditure analysis, and cost of capital and divisional hurdle rates.

Sam teaches Corporate Finance at the graduate and undergraduate levels at Lehigh University and has been honored as the outstanding MBA professor of the year on three occasions including 2011.  He also is a regular presenter in Lehigh’s Executive Education programs.  His consulting practice includes both large (Fortune 200) and small clients from a variety of industries on numerous topics as well as customized educational workshops for companies, associations, and general audiences. 

His research revolves around areas of corporate finance, valuation and investment analysis, financial performance measurement, and supply chain (working capital) management.  In addition to Essentials of Financial Analysis, Dr. Weaver is the co-author of four other books. He, also, has published in numerous professional and academic journals, most recently, the Journal of Applied Finance, Management Accounting Quarterly winning the Lybrand award for distinguished paper, Handbook of Technology Management, Corporate Finance Review, and Careers in Finance.  He is an Associate Editor for five journals and has been featured in numerous textbooks discussing applications of financial concepts.

His work has been presented at numerous professional conferences including the Financial Management Association's (FMA) Annual Conference (1985-2011), Institute of Management Accountants Annual Conference (2010, 2011), the NACVA/IBA Consultants' Annual Conference (2011), and with many other professional and academic groups.

After serving the FMA in various capacities (Board of Directors and Board of Trustees), currently he represents the FMA in its association with the Institute of Management Accountants and serves as a member of the Board of Regents for the Certified Management Accounting designation. 

Additionally, he is a Certified Management Accountant (CMA) and Certified Financial Manager (CFM).