Carol Ptak Author

Carol Ptak, CFPIM, CIRM, is a partner with the Demand Driven Institute, and was most recently at Pacific Lutheran University as Visiting Professor and Distinguished Executive in Residence. Ms. Ptak is a past president of APICS, and has authored several books on MRP, ERP, Lean, and Theory of Constraints. Chad Smith, CDDP, is a co-Founder and Partner at the Demand Driven Institute. Prior to the Demand Drive Institute Mr. Smith served as the Managing Partner of Constraints Management Group (CMG) for eighteen years. Mr. Smith has co-authored and contributed to several books on MRP, Theory of Constraints, and the Demand Driven methodology.