Dr. Sarah M. Ryan

powered by
COS Expertise®
Iowa State University
Industrial & Manufacturing Systems Engineering
Professor and Director of Graduate EducationAppointed: 2008
Professional Headshot of Sarah M. Ryan

Mailing Address

Industrial & Manufacturing Systems Engineering
3004 Black Engineering Building
Iowa State University
Ames, Iowa 50011-2164
United States

Contact Information

Phone: (515) 294-4347
Fax: (515) 294-3524
smryan@iastate.edu
http://www.public.iastate.edu/~smryan/

Qualifications

Ph.D., University of Michigan, Operations Research, 1988.
M.S.E., University of Michigan, Industrial and Operations Engineering, 1984.
B.S., University of Virginia, Systems Engineering, 1983.

Expertise and Research Interests

Dr. Ryan's research interests focus on stochastic modeling and dynamic optimization. Recent projects concerned probabilistic models for the estimation and planning of manufacturing and electric power systems. She is currently engaged in projects on capacity expansion for service providers, modeling and analysis of closed loop supply chains, and electric power system analysis and asset management.

Keywords

COS Keywords:

Industrial Engineering, Industrial Systems Engineering, Management Science, Operations Research, Optimization, Stochastic Processes.

Memberships

American Society for Engineering Education
Institute for Operations Research and the Management Sciences
Institute of Industrial Engineers

Previous Positions

2008-2008, Visiting Associate Professor, University of Auckland, Engineering Science
2007-2008, Associate Professor, Iowa State University, Industrial & Manufacturing Systems Engineering
2006-2007, Associate Professor and Interim Chair, Iowa State University, Industrial & Manufacturing Systems Engineering
2003-2006, Associate Professor and Associate Chair for Research, Iowa State University, College of Engineering, Industrial & Manufacturing Systems Engineering
1999-2003, Associate Professor, Iowa State University, College of Engineering, Industrial & Manufacturing Systems Engineering
1995-1999, Assistant Professor, University of Nebraska System, College of Engineering & Technology, Industrial and Management Systems Engineering
1988-1990, Assistant Professor, University of Pittsburgh, School of Engineering, Industrial Engineering

Funding Received

  • Vice Chancellor for Research, University of Nebraska-Lincoln: Development of Multi-dimensional Meta-analysis Methodology for Incorporation of Accurate Technical and Exra-Technical Factors in Public Policy Assessments, $7,500, May 1, 1999 to Apr 30, 2000.
  • Vice Chancellor for Research, University of Nebraska-Lincoln: Analytical Evaluation of a Manufacturing Control Policy, Layman Fund/Associate Vice Chancellor for Research, $7,393, May 1, 1997 to Apr 30, 1998.
  • National Science Foundation (NSF): Distribution of Power Generation System Production Costs, $153,791, Mar 1, 1992 to Sep 30, 1993.
  • National Science Foundation (NSF): CAREER: Deterministic Approximations in Rolling Horizon Procedures under Forecast Uncertainty, $219,925, Jun 1, 1997 to May 31, 2001.
  • National Science Foundation (NSF): An Active Learning Environment for Information Technology Across the Curriculum, $100,010, Jan 1, 2003 to Dec 31, 2003.
  • Nebraska Research Initiative: Experimental Study of Rolling Horizon Procedures for Capacity Expansion and Production Planning with ARIMA Demand, $16,998, Jan 1, 1996 to Dec 31, 1996.
  • Pittsburgh Supercomputing Center: Distribution of Power System Production Costs, Jan 1, 1990 to Dec 31, 1990.
  • National Science Foundation (NSF): An Enabling System for Market-Driven Collaborative Product Design and Recycling, $176,002, Aug 1, 2000 to Jul 31, 2002.
  • AT&T Foundation: Value of Improved Product Condition Information to Product-Based Service Providers, $25,000, 2007 to 2007.
  • Provost, Iowa State University: Improving Student Problem Formulation Skills through Scaffolding, $35,000, 2007 to 2008.
  • ISU Computation Advisory Committee: Dissemination of Online Case Tool to Increase Students' Problem-Solving Skills, $66,162, 2007 to 2008.
  • National Science Foundation (NSF): Auto-Steered Information-Decision Processes for Electric System Asset Management, $700,000, 2006 to 2008.
  • Provost, Iowa State University: Assessing Problem Solving Skill Development in Science and Engineering, $24,995, 2006 to 2007.
  • Iowa State University Computation Advisory Committee: Online Environment for Multifaceted Problem-Solving Development, $62,073, 2005 to 2006.
  • National Science Foundation (NSF): Decision Models for Bulk Energy Transportation Networks, $608,000, 2005 to 2008.
  • Sloan Foundation: Citizen-Based Assessment and Improvement of E-Government Services for Small and Medium-Sized Communities in Midwestern States, $45,000, 2005 to 2006.

Publications

  • Rahul Marathe, Sarah M. Ryan (2009) Capacity Expansion Under a Service-Level Constraint for Uncertain Demand with Lead Times, Naval Research Logistics, 56 (3), 250-263
  • Marco Serrato, Sarah M. Ryan, Juan Gaytan (2007) A Markov Decision Model to Evaluate Outsourcing in Reverse Logistics, International Journal of Production Research, 45 (18&19), 4289-4315
  • Ana Quelhas, Esteban Gil, James D. McCalley, Sarah M. Ryan (2007) A Multiperiod Generalized Network Flow Model of the U.S. Integrated Energy System, Part I - Model Description, IEEE Transactions on Power Systems, 22 (2), 829-836
  • Jumpol Vorasayan, Sarah M. Ryan (2006) Optimal Price and Quantity of Refurbished Products, Production and Operations Management, 15 (3), 369-383
  • James D. McCalley, Vasant G. Honavar, Sarah M. Ryan, William Q. Meeker, Ronald A. Roberts, Daji Qiao, Yuan Li (2006) Auto-steered Information-Decision Processes for Electric System Asset Management, Lecture Notes in Computer Science, 3993, 440 - 447
  • S. M. Ryan and J. Vorasayan, Allocating Work in Process in a Multiple-Product CONWIP System with Lost Sales, International Journal of Production Research, 43(2), 223-246, 15 Jan 2005
  • R. R. Marathe, S. M. Ryan, On the Validity of the Geometric Brownian Motion Assumption, The Engineering Economist, 50(2), 159-192, 2005
  • S. M. Ryan, Capacity Expansion for Random Exponential Demand Growth with Lead Times, Management Science, 50(6), 740-748, June 2004
  • Ryan, S. M., Jackman, J. K., Peters, F. E., Olafsson, S., Huba, M. E., The Engineering Learning Portal for Problem Solving, The Engineering Economist, 49(1), 1-19, 2004
  • Pak, D., N. Pornsalnuwat and S. M. Ryan, The Effect of Technological Improvement on Capacity Expansion for Uncertain Exponential Demand with Lead Times, The Engineering Economist, 49(2), 95-118, 2004
  • S. M. Ryan, Capacity Expansion with Lead Times and Autocorrelated Random Demand, Naval Research Logistics, 50(2), 167-183, 2003
  • S. M. Ryan and F. Choobineh, Total WIP and WIP Mix for a CONWIP Controlled Job Shop, IIE Transactions, 35(3), 405-418, 2003
  • A. Simampo and S. M. Ryan, Capacity Expansion for a Loss System with Exponential Demand Growth, Computers & Operations Research, 30, 1525-1537, 2003
  • S. M. Ryan, J. Min and S. Olafsson, 'Experimental Study of Scalability Enhancement for Reverse Logistics E-Commerce', Scalable Enterprise Systems: An Introduction to Recent Advances, 287-312, 2003
  • E. Chan, J. Ohlmann, S. Dunbar, C. Dunbar, S. Ryan and P. Savory, Operations Research Methods Applied to Workflow in a Medical Records Department, Health Care Management Science, 5, 191-199, 2002
  • C. D. McAllister and S. M. Ryan, Relative Risk Characteristics of Rolling Horizon Hedging Heuristics for Capacity Expansion, The Engineering Economist, 45(2), 115-128, 2000
  • S. M. Ryan, B. Baynat and F. Choobineh, Determining Inventory Levels in a CONWIP Controlled Job Shop, IIE Transactions, 32(2), 105-114, 2000
  • S. M. Ryan, Forecast Frequency in Rolling Horizon Hedging Heuristics for Capacity Expansion, European Journal of Operational Research, 109(3), 550-558, 1998
  • S. M. Ryan, A Renewal Reward Approximation for the Variance of Electric Power Production Cost, IIE Transactions, 29(6), 435-440, 1997
  • S. M. Ryan and M. Mazumdar, Chronological Influences on the Distribution of Power System Production Costs, Operations Research, 40, S284-S292, 1992
  • S. M. Ryan, J. Bean and R. L. Smith, A Tie-Breaking Rule for Discrete Infinite Horizon Optimization, Operations Research, 40, S117-S126, 1992
  • Ryan, S. M. and M. Mazumdar, Effect of Frequency and Duration of Generating Unit Outages on Distribution of System Production Costs, IEEE Transactions on Power Systems, 5, 191-197, 1990
  • S. M. Ryan and J. C. Bean, Degeneracy in Infinite Horizon Optimization, Mathematical Programming, 43, 305-316, 1989
  • J. Bean, C. Noon, S. M. Ryan, G. Salton, Selecting Tenants in a Shopping Mall, Interfaces, 18(2), 1-9, 1988

Profile Details

Last Updated: 3/25/2009

COS Expertise ID #680688
Reference this profile directly: http://myprofile.cos.com/smryan