Wallace J. Hopp - Publications

Books and Monographs

W.J. Hopp, M.L. Spearman, Factory Physics: Foundations of Manufacturing Management, Burr Ridge, IL: Irwin/McGraw-Hill, 1996 (second edition, 2000, third edition 2007).

 

W.J. Hopp, M.L. Spearman, “Factory Physics,” 1997 Yearbook of Science and Technology, New York: McGraw-Hill, 1997.

 

S. Chayet, W.J. Hopp, X. Xu, “The Marketing-Operations Interface,” in Handbook of Supply Chain Analysis in the eBusiness Era, David Simchi-Levi, David Wu, Max Shen (eds.), New York: Kluwer, 2004.

 

W.J. Hopp, Supply Chain Science, New York: McGraw-Hill, 2008.

 

W.J. Hopp, “Single Server Queueing Models,” in Building Intuition: Insights from Basic Operations Management Models and Principles, Dilip Chhajed, Tim Lowe (eds.), New York: Springer, 2008.

Refereed Papers

Production and Supply Chain

M.L. Spearman, W.J. Hopp, D.L. Woodruff, "A Hierarchical Control Architecture for CONWIP Production Systems," Journal of Manufacturing and Operations Management 2, 1989, 147-171.

W.J. Hopp, N. Pati, P.C. Jones, "Optimal Inventory Control in a Production Flow System with Failures," International Journal of Production Research 27, 1989, 1367-1384.

M.L. Spearman, D.L. Woodruff, W.J. Hopp, "CONWIP: A Pull Alternative to Kanban," International Journal of Production Research 28, 1990, 879-894.

I. Duenyas, W.J. Hopp, "Estimating Variance of Output from Cyclic Exponential Queueing Systems," Queueing Systems 7, 1990, 337-354.

W.J. Hopp, M.L. Spearman, D.L. Woodruff, "Practical Strategies for Lead Time Reduction," Manufacturing Review 3, 1990, 78-84.

W.J. Hopp, M.L. Spearman, "Throughput of a Constant WIP Manufacturing Line Subject to Failures, International Journal of Production Research 29, 1991, 635-655.

W.J. Hopp, M.L. Spearman, I. Duenyas, "Economic Production Quotas for Pull Manufacturing Systems," IIE Transactions 25 (2), 1993, 71-79.

I. Duenyas, W.J. Hopp, M.L. Spearman, "Characterizing the Output Process of a CONWIP Line with Deterministic Processing and Random Outages," Management Science 39 (8), 1993, 975-988.

I. Duenyas, W.J. Hopp, "Quoting Customer Lead Times," Management Science 41 (1), 1995, 43-57.

W.J. Hopp, M.L. Spearman, R.Q. Zhang, "Easily Implementable (Q,r) Inventory Control Policies," Operations Research.45 (3), 1997, 327-340

I. Duenyas, W.J. Hopp, Y. Bassok, "Production Quotas as Bounds on Interplant JIT Contracts," Management Science 43 (10), 1997, 1372-1386

W.J. Hopp, M.L. Roof, "Setting WIP Levels with Statistical Throughput Control (STC) CONWIP Production Lines," International Journal of Production Research 36 (4), 1998, 867-882.

M.L. Spearman, W.J. Hopp, "Teaching Operations Management from a Science of Manufacturing", Production and Operations Management 7 (2), 1998, 132-145.

W.J. Hopp, R.Q. Zhang, M.L. Spearman, "An Easily Implementable Hierarchical Heuristic for a Two-Echelon Spare Parts Distribution System" IIE Transactions 31 (10), 1999, 977-988.

W.J. Hopp, M.L. Roof, "Quoting Manufacturing Due Dates Subject to a Service Level Constraint," IIE Transactions 32 (9), 2000, 771-784.

R.Q. Zhang, W.J. Hopp, "Spreadsheet Implementable Inventory Control Policies," Journal of Heuristics 7 (2), 2001, 185-203.

M.P. Van Oyen, E.G. Senturk-Gel, W.J. Hopp, "Performance Opportunity of Workforce Agility in Collaborative and Noncollaborative Work Systems," IIE Transactions 33 (9), 2001, 761-777.

M. Hegedus, W.J. Hopp, “Due Date Setting with Supply Constraints in Systems using MRPComputers and Industrial Engineering 39, 2001, 293-305.

 

M. Hegedus, W.J. Hopp, “Setting Procurement Safety Lead Times for Assembly SystemsInternational Journal of Production Research 39, 2001, 3459-3478.

 

W.J. Hopp, M.L. Roof, “A Simple Robust Leadtime Quoting PolicyManufacturing and Service Operations Management 3, 2001, 321-336.

 

W.J. Hopp, M.L. Spearman, S. Chayet, K. Donohue, E. Senturk, “Using an Optimized Queueing Network Model to Support Wafer Fab Design”, IIE Transactions 34 (2), 2002, 119-130.

 

Y. Bassok, W.J. Hopp, M. Rohatgi, “A Simple Linear Heuristic for the Service Constrained Random Yield ProblemIIE Transactions 34 (5), 2002, 479-487.


E.S. Gel, W.J. Hopp, M.P. Van Oyen, “Factors Affecting Opportunity of Worksharing as a Dynamic Line Balancing MechanismIIE Transactions, 34 (10), 2002, 847-863.

 

K.L.  Donohue, W.J. Hopp, M.L. Spearman, “Optimal Design of Stochastic Production Lines:  A Dynamic Programming ApproachIIE Transactions 34 (10), 2002, 891-903.

 

J. Boudreau, W. Hopp, J. McClain, L.J. Thomas, “On the Interface Between Operations and Human Resources ManagementManufacturing and Service Operations Management 5 (3), 2003, 179-202.

W.J. Hopp, E. Tekin, M.P. Van Oyen, “Benefits of Skill Chaining in Production Lines with Cross-Trained WorkersManagement Science 50 (1), 2004, 83-98.

 

W.J. Hopp, M.P. Van Oyen, “Agile Workforce Evaluation: A Framework for Cross-Training and CoordinationIIE Transactions 36 (10), 2004, 919-940.

 

W.J. Hopp, M.L. Spearman, “To Pull or Not to Pull: What is the Question?,” Manufacturing and Service Operations Management 6 (2), 2004, 133-148.

 

W.J. Hopp, S.M.R. Iravani, B. Shou, “Serial Agile Production Systems with AutomationOperations Research 53(5), 2005,  852–866.

 

E.S. Gel, W.J. Hopp, M.P. Van Oyen, “Hierarchical Cross-Training in WIP-Constrained SystemsIIE Transactions 39, 2007, 125-143.


W.J. Hopp, S.M.R. Iravani, G. Yuen, “Operations Systems with Discretionary Task CompletionManagement Science 53(1), 2007, 61-77.  Online Appendix.


W.J. Hopp, S.M.R. Iravani, B. Shou, “A Diagnostic Tree for Improving Production Line PerformanceProduction and Operations Management 16(1), 2007, 77-92.

 

S. Chayet, W.J. Hopp, “Risk Sensitive Sizing of Responsive FacilitiesNaval Research Logistics 55(3), 2008, 218–233.

 

W.J. Hopp, S.M.R. Iravani, F. Liu, “Managing White Collar Work: An Operations-Oriented SurveyProduction and Operations Management 18(1), 2009, 1-32.

 

W.J. Hopp, S.M.R. Iravani, B. Shou, R.Lien, “Design and Control of Agile Automated CONWIP Production LinesNaval Research Logistics 56(1), 2009, 42–56.

 

E. Tekin, W.J. Hopp, M.P. Van Oyen, “Pooling Strategies for Call Center Agent Cross-trainingIIE Transactions 41(6), 2009, 546-561.


X. Xu, W.J. Hopp, “Price Trends in a Dynamic Pricing Model with Heterogenous Customers: A Martingale PerspectiveOperations Research 57(5), 2009, 1298-1302.

 

W.J. Hopp, S. Iravani, W.L. Xu. “Vertical Flexibility in Supply Chains,” to appear in Management ScienceOnline Appendix.

 

Assembly Systems

W.J. Hopp, J.T. Simon, "Bounds and Heuristics in Assembly-Like Queues," Queueing Systems 4, 1989, 137-156.

 J.T. Simon, W.J. Hopp, "Availability and Average Inventory of Balanced Assembly-Like Flow Systems," IIE Transactions, 23 (2), 1991, 161-168.

 I. Duenyas, W.J. Hopp, "CONWIP Assembly with Deterministic Processing and Random Outages," IIE Transactions 24 (4), 1992, 97-109.

 W.J. Hopp, J.T. Simon, "Estimating Throughput in an Unbalanced Assembly-Like Flow System," International Journal of Production Research 31 (4), 1993, 851-868.

 W.J. Hopp, M.L. Spearman, "Setting Safety Leadtimes for Purchased Components in Assembly Systems," IIE Transactions 25 (2), 1993, 2-11.

 I. Duenyas, W.J. Hopp, "Estimating the Throughput of an Exponential CONWIP Assembly System," Queueing Systems 14, 1993, 135-157.

J.T. Simon, W.J. Hopp, "Throughput and Average Inventory in Discrete Balanced Assembly Systems," IIE Transactions 27 (3), 1995, 368-373.

Product Development and Pricing

W.J. Hopp, X. Xu, “Product Line Selection and Pricing with Modularity in DesignManufacturing and Service Operations Management 7(3), 2005, 172-187.

 

X. Xu, W.J. Hopp, “A Monopolistic and Oligopolistic Stochastic Flow Revenue Management ModelOperations Research 54(6), 2006, 1098-1109.

 

W.J. Hopp, X. Xu, “A Static Approximation for Dynamic Demand Substitution with Applications in a Competitive MarketOperations Research 56(3), 2008, 630-645.

 

B. Gokpinar, W.J. Hopp, S.M.R. Iravani, “The Impact of Misalignment of Organization Structure and Product Architecture on Quality in Complex Product Development", Management Science 56(3), 468-484.  Online Appendix.

 

Equipment Replacement

P.C. Jones, J.L. Zydiak, W.J. Hopp, "Stationary Dual Prices and Depreciation," Mathematical Programming 41 (3), 1988, 357-366.

 W.J. Hopp, S.C. Wu, "Multi-Action Maintenance Under Markovian Deterioration and Incomplete State Information," Naval Research Logistics Quarterly 35, 1988, 447-462.

 P.C. Jones, J.L. Zydiak, W.J. Hopp, "Stable Economic Depreciation and Neutral Replacement Decisions," The Engineering Economist 34, 1989, 115-128.

 W.J. Hopp, S.C. Wu, "Machine Maintenance with Multiple Maintenance Actions," IIE Transactions 22 (3), 1990, 226-233.

 P.C. Jones, J.L. Zydiak, W.J. Hopp, "Generalized Imputed Salvage Values," The Engineering Economist 35, 1990, 215-229.

 P.C. Jones, J.L. Zydiak, W.J. Hopp, "Stable Economic Depreciation," Operations Research Letters 9, 1990, 325-333.

 W.J. Hopp, S.K. Nair, "Timing Replacement Decisions Under Discontinuous Technological Change," Naval Research Logistics 38, 1991, 203-220.

 S.K. Nair, W.J. Hopp, "A Model for Replacement due to Technological Obsolescence," European Journal of Operations Research 63 1992, 207-221.

 P.C. Jones, J.L. Zydiak, W.J. Hopp, "Capital Asset Valuation and Depreciation for Stochastically Deteriorating Equipment," Engineering Economist 38, 1992, 19-30.

 P.C. Jones, J.L. Zydiak, W.J. Hopp, "Parallel Machine Replacement," Naval Research Logistics 38, 1991, 351-365.

 W.J. Hopp, P.C. Jones, J.L. Zydiak, "A Further Note on Parallel Replacement," Naval Research Logistics 40, 1993, 575-579.

W.J. Hopp, S.K. Nair, "Markovian Deterioration and Technological Change," IIE Transactions 26 (6), 1994, 74-82.

W.J. Hopp, Y.L. Kuo, "An Optimal Structured Policy for Maintenance of Partially Observable Aircraft Engine Components," Naval Research Logistics 45, 1998, 335-352.

W.J. Hopp, Y.L. Kuo, "Heuristics for Multi-Component Joint Replacement: Applications to Aircraft Engine Maintenance," Naval Research Logistics, 45, 1998, 435-458.
 

Stochastic Optimization and Forecast Horizons

W.J. Hopp, J.C. Bean, R.L. Smith, "A New Optimality Criterion for Non-Homogeneous Markov Decision Processes," Operations Research 35 (6), 1987, 875-883.

W.J. Hopp, "A Sequential Model of R&D Investment Over an Unbounded Time Horizon," Management Science 33 (4), 1987, 500-508.

W.J. Hopp, "Sensitivity Analysis in Discrete Dynamic Programming," Journal of Optimization Theory and Applications 56 (2), 1988, 257-269.

W.J. Hopp, "Identifying Forecast Horizons in Nonhomogeneous Markov Decision Processes," Operations Research 37 (2), 1989, 339-343.

J.C. Bean, W.J. Hopp, I. Duenyas, "A Stopping Rule for Forecast Horizons in Nonhomogeneous Markov Decision Processes," Operations Research 40 (6), 1992, 1188-1199.

M.S. Daskin, W.J. Hopp, B. Medina, "Forecast Horizons and Dynamic Facility Location Planning," Annals of Operations Research 40, 1992, 125-151.
 

Other

W.J. Hopp, W.P. Darby, "Household Water Conservation: The Role of Indirect Energy Savings," Energy 5 (12), 1980, 1183-1192.

 

W.J. Hopp, W.P. Darby, "In-Home Conservation and Wastewater Management," ASCE Journal of the Water Resources Planning and Management Division, October 1981, 401-418.

 

P.N. Petty, W.J. Hopp, "A Comparative Risk Analysis of Fuelwood Use in the Pacific Northwest," Energy 7 (4), 1982, 359-365.

 

G.B. Hazen, W.J. Hopp, J.M. Pellissier, "Small-Risk Stochastic Assessment in Medical Decision-Making," Medical Decision Making 11 (4), 1991, 294-304.

 

W.J. Hopp, “Fifty Years of Management Science,” Management Science 50 (1), 1-7.

 

L. Birnbaum, W. Hopp, S. Iravani, K. Livingston, B. Shou, and T. Tirpak, “Task Aware Information Access For Diagnosis of Manufacturing Problems,” 2005 International Conference on Intelligent User Interfaces (IUI'05), San Diego, California, USA, January 9-12, 2005,  308-310.
 

Working Papers

S. Banerjee, W.J. Hopp, “The Project Portfolio Management ProblemDepartment of Industrial Engineering and Management Sciences, Northwestern University, June 2001.

S. Banerjee, W.J. Hopp, “R&D Policy in a Volatile Market: Evaluating Flexibility Between Research and Development,” Department of Industrial Engineering and Management Sciences, Northwestern University, August 2004.

 

S. Chayet, W.J. Hopp, “Sequential Entry with Capacity, Price and Leadtime Competition,” Department of Industrial Engineering and Management Sciences, Northwestern University, June 2005.

 

W.J. Hopp, Zigeng Yin, “Protecting Supply Chain Networks Against Catastrophic Failures,” Department of Industrial Engineering and Management Sciences, Northwestern University, August 2006.

 

W.J. Hopp, S.M.R. Iravani, F. Liu, M.J. Stringer, "The Impact of Discussion, Awareness, and Collaboration Network Position on Research Performance of Engineering School Faculty," Northwestern University, May 2009.