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Ph.D. in Engineering Management, Missouri University of Science and Technology, (1986)

M.S. in Engineering Management, Missouri University of Science and Technology, (1983)

B.S. in Electrical Engineering, Middle East Technical University, (1975)

Expertise

Research Interests

Dr.Unal's research interests include Multidisciplinary Design Optimization, Robust Design, Quality Engineering, Response Surface Methods, and Parametric Cost Estimating. He has published in the Engineering Management Journal, IEEE Transactions in Engineering Management, Quality Engineering, Journal of Cost Analysis and Management, Reliability Engineering & System Safety, Journal of Parametrics and in the Journal of Spacecraft and Rockets.

Articles

Quigley, P., Unal, R., Stackhouse, P. W. and Cox, S. J. (2020). A predictor analysis framework for surface radiation budget reprocessing using satellite data. International Journal of Critical Infrastructures/Inderscience Publishers.

Bradley, J. M., Unal, R., Pinto, C. Ariel. and Cavin, E. (2015). Competencies of Governance of Complex Systems of Systems. Int. Journal of Systems of Systems Engineering/Inderscience 6 (1/2) , pp. 71-89.

Katina, P. and Unal, R. (2014). An Application of Fuzzy Sets for Decision Analysis in Prioritizing Critical Energy Infrastructures. Infranomics/Springer International Publishing , pp. 377-394.

Walker, R., Gheorghe, A. V., Unal, R. and Pyne, J. C. (2014). A Method to Define Systems of Systems Requirements. Int. Journal of Systems of Systems Engineering.

Arin, A., Rabadi, G. and Unal, R. (2011). Comparative studies on design of experiments for. Int. J. Experimental Design and Process Optimisation 2 (2) , pp. 102-124.

Calida, B., Gheorghe, A. V. and Unal, R. (2010). Dealing with next generation infrastructures academic programs complexity induced resiliency assessment. " International Journal for Experimental Design and Process Optimization 6 (4) , pp. 347-362.

Simpson, M. and Unal, R. (2010). Using Response Surface Methodology As an Approach to Understand and Optimize Operational Air Power. International C2 Journal 4 (3).

Yenjay, O., Unal, R. and Lepsch, R. (2006). Using Dual Response Surfaces to Reduce Variability in Launch Vehicle Design: A case study. Reliability Engineering & System Safety 91 , pp. 407-412.

Unal, R., Conway, B., Chytka, T. and Keating, C. B. (2005). Calibration of Expert Judgments Applied to Uncertainty Assessment. Engineering Management Journal (EMJ) 17 (2) , pp. 34-43.

Keating, C. B., Rogers, R., Unal, R., Dryer, D., Sousa-Poza, A., Safford, R., Peterson, W. and Rabadi, G. (2003). Systems of Systems Engineering . Engineering Management Journal 15 (3) , pp. 36-45.

Kauffmann, P., Fernadez, A., Keating, C. B., Jacobs, D. and Unal, R. (2002). Using Quality Function Deployment to Select the Courses and Topics that Enhance Program Effectiveness. Journal of Engineering Education 91 (2) , pp. 231-238.

Unal, R., Braun, D. R.., Moore, A. A.. and Lepsch, A. R.. (2001). Designing for Cost Using Genetic Algorithms. Journal of Parametrics XXI (1) , pp. 59-73.

Unal, R., Braun, D. R.., Moore, A. A.. and Lepsch, A. R.. (2001). Design Optimization on Cost Basis Using Orthogonal Arrays. Journal of Cost Analysis and Management , pp. 41-50.

Kauffmann, P., Unal, R., Fernandez, A. and Keating, C. B. (2000). A Model for Allocating Resources to Research Programs by Evaluating Technical Importance and Research Productivity. Engineering Management Journal 12 (1) , pp. 5-8.

Rowell, F. L.., Braun, D. R.., Olds, R. J.. and Unal, R. (1999). Multidisciplinary Conceptual Design Optimization of Space Transportation Systems. Journal of Aircraft 36 (1) , pp. 218-226.

Unal, R., Wu, C. K.. and Stanley, O. D.. (1997). Structural Design Optimization for a Space Truss Platform Using Response Surface Methods. Quality Engineering 9 (3) , pp. 441-447.

Unal, R., Stanley, O. D.. and Lepsch, A. R.. (1996). Parametric Modeling Using Saturated Experimental Designs. Journal of Parametrics XVI (1) , pp. 3-18.

Lepsch, A. R.., Stanley, O. D.. and Unal, R. (1995). Dual-Fuel Propulsion in Single Stage Advanced Manned Launch System Vehicle. Journal of 32 (3) , pp. 417-425.

Clemson, B., Yonming, T., Payne, J. and Unal, R. (1995). Efficient Methods for Sensitivity Analysis. System Dynamics Review 11 (1) , pp. 31-49.

Stanley, O. D.., Engelund, C. W.., Lepsch, A. R.., McMillin, M. M.., Wurster, E. K.., Powell, W. R.., Guinta, A. A.. and Unal, R. (1994). Rocket-Powered Single-Stage Vehicle Configuration Selection and Design. Journal of Spacecraft 31 (5).

Unal, R., Stanley, O. D.., Engelund, C. W. and Lepsch, A. R.. (1994). Design for Quality Using Response Surface Methods: An Alternative to Taguchi’s Parameter Design Approach. Engineering Management Journal (EMJ) 6 (3) , pp. 40-48.

Unal, R., Stanley, O. D. . and Joyner, R. C.. (1994). Parametric Model Building and Design Optimization Using Response Surface Methods. Journal of Parametrics XIV (1) , pp. 81-96.

Unal, R. and Stanley, O. D.. (1993). Propulsion System Design Optimization Using the Taguchi Method. IEEE Transactions on Engineering Management 40 (3) , pp. 315-322.

Unal, R. and Bush, B. L.. (1993). Parametric Optimization Study for an Aerobrake. Journal of Parametrics XIII (1) , pp. 51-65.

Bush, B. L.., Unal, R., Rowell, F. L.. and Rehder, J. J.. (1992). Weight Optimization of an Aerobrake Structural Concept for a Lunar Transfer Vehicle. NASA Technical Paper-3262.

Stanley, O. D.., Unal, R. and Joyner, R. C. . (1992). Application of Taguchi Methods to Propulsion System Optimization for SSTO Vehicles. Journal of Spacecraft and Rockets 29 (4) , pp. 453-459.

Unal, R. and Bush, B. L.. (1992). Engineering Design for Quality Using the Taguchi Approach. Engineering Management Journal (EMJ) 4 (1) , pp. 37-47.

Unal, R. and Dean, B. E.. (1991). Design Optimization for Quality and Cost: The Robust Design Approach. Journal of Parametrics XI (1) , pp. 73-93.

Unal, R., Dean, B. E.. and Moore, A. (1990). A Space Transportation System Operations and Support Cost Modeling Approach. Journal of Parametrics X (4) , pp. 35-50.

Book Chapters

Calida, B., Gheorghe, A. V. and Unal, R. (2014). Complexity Induced Vulnerability Assesment: How Resilient are Our Academic Programs Infranomics (pp. 377-394) Springer.

Conference Proceeding

Avram, V., Semenescu, A., Ioana, A., Unal, R. and Marcu, D. (2021). Evolution of Non-ferrous Metals Production, Consumption and Prices in the World Market for the Third Millennium Bucarest: ICMIE.

Ozdemir, H., Pinto, C. Ariel., Unal, R., Keating, C. B. and Britcher, C. P. (2019). Supporting Technology Selection via Portfolio Readiness level Philadelphia, PA: ASEM.

Miller, A. and Unal, R. (2018). Implementation of MCDA Toolkit to Aid in Ranking Naval Mission Vessel Combinations with Uncertaintyy ASNE/Fleet Maintenance & Modernization Symposium.

Dario, E., Landaeta, R. and Unal, R. (2017). Creative Confidence in Organizational Knowledge Creation: A synthesis of the literature ASEM-2017-139.

Ozdemir, H., Pinto, C. Ariel., Unal, R. and Keating, C. B. (2015). Reducing Uncertainty in Technology Selection for Long Life Cycle Designs Industrial and Systems Engineering Research Conference 2015.

Ozdemir, H. and Unal, R. (2015). A System Maturity Metric from an Operational Perspective ASEM International Conference 2015.

Gorkem, I., Pazos-Lago, M. and Unal, R. (2015). Key Factors Driving Personnel Downsizing in Multinational Military Organizations ASEM International Conference.

Bell, A., Gheorghe, A. V. and Unal, R. (2013). Enhanced Integrated Safety Risk Management Through Central Composite Design.

Rabadi, G., Bowling, S. R., Keating, C. B. and Unal, R. (2009). Sensitivity Analysis Framework for Large and Complex Simulation Models Istanbul: Proceedings of the 2009 Summer Computer Simulation Conference.

Shearer, N. E., Hester, P. T. and Unal, R. (2009). Expert Judgment Elicitation of Aerodynamic Uncertainties for the Ares I (pp. 603-606) 30th Annual National Conference of the American Society for Engineering Management 2009.

Arin, A., Rabadi, G. and Unal, R. (2009). Tuning Parameters In Heuristics By Using Design Of Experiments Methods (pp. 73-78) Proceedings of Modeling and Simulation (MODSIM) World 2009 Conference & Expo.

Unal, R., Paranjepe, R. and Bawab, S. (2009). Optimization of a Vehicle A-Pillar in a Rollover Crash (pp. 144-151) Bangalore: Proceedings of the International Conference on Research into Design, Indian Institute of Science.

Unal, R., Bondi, S. and Chytka, T. (2008). Uncertainty Assessment at Conceptual Design: An Evidence Theory Approach The Joint International Conference of The International Society of Parametric Analysts and The Society of Cost Estimating And Analysis.

Bondi, S. and Unal, R. (2008). Cost Considerations Based on Reliability of a Mission Critical System Proceedings of the Joint International Conference of the International Society of Parametric Analysts and The Society of Cost Estimating and Analysis.

Landaeta, R., Unal, R., Nazikkol, S. and Rabadi, G. (2006). An Empirical Investigation of the Effectiveness of Crisis Management Strategies Huntsville, Alabama: Proceedings of the American Society for Engineering Management, National Conference.

Landaeta, R., Taslicali, A., Unal, R. and Rabadi, G. (2006). Understanding Managerial Differences and Similarities between AHP and ANP: An Empirical Study Huntsville, Alabama: Proceedings of the American Society for Engineering Management, National Conference.

Rabadi, G., Chytka, T., Morris, W. D., White, N. and Unal, R. (2004). Architectural Simulation Model for Operations of Future Launch Systems (pp. 283-289) Proceeding of the 25th National Conference of the American Society for Engineering Management.

Peterson, W., Kauffmann, P., Keating, C. B. and Unal, R. (2002). Engineering Management – The Minor of Choice Montreal: 2002 Proceedings of the American Society of Engineering Education.

Kauffmann, P., Unal, R. and Sousa-Poza, A. (2001). A Study of Financial Analysis Expectations and Workplace Practices in the Engineering Management Workplace Huntsville, AL: Proceedings of 22nd ASEM National Conference .

Keating, C. B., Kaufmann, P., Jacobs, J., Derya, A., Dryer, D., Unal, R. and Sousa-Poza, A. (2000). Design of Collaborative Engineering Work Systems (pp. 21-29) Washington, D.C: Proceedings of the American Society for Engineering Management, National Conference.

Kauffmann, P., Fernandez, A., Keating, C. B., Jacobs, D. and Unal, R. (2000). Selection of Curricular Topics Using Extensions of Quality Function Deployment St. Louis, MO: American Society for Engineering Education Annual Conference Proceedings.

Kauffmann, P. J., Unal, R., Fernandez, A. and Keating, C. B. (1999). A Model of AllocatingResources to Research Programs by Evaluating Technical Importance (pp. 289-292) American Society for Engineering Management(ASEM) National Conference.

Unal, R., King, R., White, N. and Morris, D. W. (1999). Development of ResponseSurface Models for Estimating Operational Requirements of Reusable LaunchVehicles (pp. 99-104) American Society for Engineering Management(ASEM) National Conference.

Unal, R., Lepsch, R. A., Lockwood, M. K. and McMillin, M. L. (1999). Model Building forRapid Multidisciplinary Integration and Optimization Using Experimental Designs (pp. 253-259) American Society for Engineering Management(ASEM) National Conference.

Unal, R., Morris, D. W., White, N. H. and Lepsch, A. R. (1998). Modeling andSimulation of Reliability &Maintainability Parameters for ReusableLaunch Vehicles Using Design of Experiments (pp. 90-94) American Society for Engineering Management (ASEM) NationalConference.

Lou, L. and Unal, R. (1998). Side Riser Neck Geometries Study for Cu-Ni FlangesUsing Designed Experiments (pp. 64-70) American Society Engineering Management (ASEM) National Conference.

Unal, R., Lepsch, A. R. and McMillin, M. (1998). Response Surface ModelBuilding and Multidisciplinary Optimization Using D-Optimal Designs (pp. 405-411) Collection of Technical Papers for 7th AnnualCollection of Technical Papers for 7th AnnualAIAA/NASA/ISSMO Symposium on Multidisciplinary Analysisand Optimization.

Unal, R. and Lepsch, R. A. (1998). Constructing Approximation Models for Deterministic Experiments Using D-Optimal Designs ISSMO/NASA/AIAA First Internet Conference on Approximations and Fast Reanalysis in Engineering Optimization.

Monroe, R. W., Lepsch, R. A. and Unal, R. (1998). A Methodology to AddressUncertainty in Parametric Analysis Using Expert Judgment Joint International Conference of the International Society of Parametric Analysts and The Society of Cost Estimating and Analysis.

Eldred, A. W. and Unal, R. (1997). Evaluation of A Model for Software Cost Prediction Using Function Points (pp. 95-103) American Societyfor Engineering Management (ASEM) National Conference.

Unal, R. and Lepsch, R. A. (1997). Response Surface Methods for Model Buildingand Multidisciplinary Optimization (pp. 193-199) AmericanSociety for Engineering Management (ASEM) National Conference.

Unal, R., Braun, D. R., Moore, A. A. and Lepsch, R. A. (1997). Response Surface Model Building Using Orthogonal Arrays for Computer Experiments 19th Annual Conference of the International Society of Parametric Analysts.

Joshi, B., Unal, R., Morris, D. and White, N. (1996). A Framework for theOptimization of Discrete Event Simulation Models (pp. 73-78) American Society for Engineering Management (ASEM) NationalConference.

Unal, R., Braun, D. R., Moore, A. A. and Lepsch, R. A. (1996). Design Optimizationon Cost Basis Using Taguchi’s Orthogonal Arrays (pp. 17-21) American Society for Engineering Management (ASEM) National Conference.

Unal, R., Lepsch, A. R., Engelund, C. W. and Stanley, O. D. (1996). ApproximationModel Building and Multidisciplinary Design Optimization UsingResponse Surface Methods (pp. 592-598) 6th Annual AIAA/NASA/ISSMO Symposium on Multidisciplinary Analysis andOptimization.

Joshi, B., Morris, D., White, N. and Unal, R. (1996). Optimization of OperationsResources Via Discrete Event Simulation Modeling (pp. 1737-1742) 6th Annual AIAA/NASA/ISSMO Symposium onMultidisciplinary Analysis and Optimization.

Rowell, F. L., Braun, D. R., Olds, R. J. and Unal, R. (1996). Recent Experiences inMultidisciplinary Conceptual Design Optimization for Launch Vehicles(AIAA-96-4050) 6th Annual AIAA/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization.

Monroe, W. R., Lepsch, R. A. and Unal, R. (1996). Parametric Weight Risk Analysis for a Launch Vehicle Using Expery Judgment Data 18th Annual Conference of the International Society of ParametricAnalysts.

Monroe, W. R., Lepsch, R. A. and Unal, R. (1995). Weight Estimating Risk Analysis: Incorporating Uncertainty at Conceptual Design for a Launch Vehicle (pp. 25-32) American Society for Engineering Management (ASEM) National Conference.

Richards, D. L., Bao, P. H., Unal, R., Steier, F., Jacobs, A. D. and Reed, M. B. (1995). Graduate Program Structures in Engineering Management at ¹ÏÉñÍø (pp. 2076-2082) 1995Annual ASEE Conference.

Unal, R., Braun, D. R., Moore, A. A. and Lepsch, A. R. (1995). Multidisciplinary Design Optimization for Cost Using Genetic Algorithms 17th Annual Conference of the International Society of Parametric Analysts.

Richards, D. L., Unal, R., Steier, F., Jacobs, A. D. and Reed, M. B. (1995). The Evolution of Engineering Management at ¹ÏÉñÍø (pp. 1857-1863) 1995 Annual ASEE Conference.

Unal, R., Wu, C. K. and Stanley, O. D. (1994). A Study of Design of ExperimentsMethods for Design Optimization and Quality Improvement (pp. 87-91) American Society for Engineering Management (ASEM) National Conference.

Unal, R. (1994). Parametric Modeling UsingSaturated Experimental Designs (pp. 13-22) 16th Annual Conference of the International Society of Parametric Analysts.

Unal, R., Stanley, D. O., Engelund, W. C., Lepsch, R. A. and McMillin, M. (1993). Designing for Quality Using Response Surface Methods (pp. 7-11) Proceedings of the 14th Annual Conference of the American Society for Engineering Management.

Engelund, W. C., Stanley, D. O., Lepsch, R. A., McMillin, M. and Unal, R. (1993). Aerodynamic Configuration Design Using Response Surface Methodology Analysis AIAA Aircraft Design, Systems and Operations Meeting, American Institute of Aeronautics and Astronautics.

Lepsch, R. A., Stanley, D. O. and Unal, R. (1993). Application of Dual-Fuel Propulsion to a Single Stage AMLS Vehicle AIAA/SAE/ASME/ASEE Joint Propulsion Conference and Exhibit.

Unal, R. and Stanley, D. O. (1993). Parametric Design Optimization Using Response Surface Methods (pp. H87-96) Proceedings of the15th Annual Conference of the International Society of Parametric Analysts .

Stanley, D. O., Engelund, W. C., Lepsch, R. A., McMillin, M., Wurster, K. E., Powell, R. W., Guinta, A. A. and Unal, R. (1993). Rocket-Powered Single-Stage Vehicle Configuration Selection and Design AIAA/AHS/ASEE Aerospace Design Conference, American Institute of Aeronautics and Astronautics.

Stevens, C. and Unal, R. (1992). Quality Measurement in the Service Sector (pp. 170-173) Proceedings of the 1992 International Engineering Management Conference, IEEE Engineering Management Society/ASEM.

Unal, R. and Stanley, D. O. (1992). The Role of Statistically Designed Experiments in Conceptual Aerospace Vehicle Design (pp. 211-214) Proceedings of the 1992 International Engineering Management Conference, IEEE Engineering Management Society/ASEM.

Unal, R. and Bush, L. B. (1992). Parametric Optimization Study for a Lunar Aerobrake (pp. 106-118) Proceedings of the14th Annual Conference of the International Society of Parametric Analysts .

Unal, R. and Bush, L. B. (1992). Elements of Designing for Cost 1992 Aerospace Design Conference, American Institute of Aeronautics and Astronautics.

Bush, L. B. and Unal, R. (1992). Preliminary Structural Design of a Lunar Transfer Vehicle Aerobrake 1992 Aerospace Design Conference, American Institute of Aeronautics and Astronautics.

Stanley, D. O., Unal, R. and Joyner, R. (1992). Application of Taguchi Methods to Dual Mixture Ratio Propulsion System for Single Stage to Orbit Vehicles 30th Aerospace Sciences meeting and Exhibit, American Institute of Aeronautics and Astronautics.

Dean, E. B. and Unal, R. (1991). Designing for Cost (pp. 1-6) 1991 AACE Transactions, of the American Association of Cost Engineers.

Unal, R. and Dean, E. B. (1991). Taguchi Approach to Design Optimization for Quality and Cost (pp. 132-141) Proceedings of the 12th International Conference of International Society of Parametric Analysts.

Tzerefos, P. L. and Unal, R. (1991). Total Quality Management for Software Development (pp. 165-178) Proceedings of the 13th International Conference of.

Unal, R. and Dean, E. B. (1990). Analysis of Quality Costs: An Integral Part of (pp. 453-457) Proceedings of the Fifth International Conference on CAD/CAM, Robotics and Factories of the Future.

Unal, R. and Dean, E. B. (1990). Optimizing Quality Costs (pp. 200-203) Proceedings of the Eleventh Annual Meeting of the American Society for Engineering Management.

Unal, R. (1990). Parametric Analysis of Quality Costs (pp. 91-102) Proceedings of the 12th International Conference of International Society of Parametric Analysts.

Unal, R. (1989). Maximizing Benefis from International Manufacturing: A Portfolio Approach Proceedings of the Second International Conference on Engineering Management.

Unal, R. (1988). Evaluating Prospective International Projects (pp. 289-292) Proceedings of the Nineth Annual Meeting of the American Society for Engineering Management.

Unal, R. (1987). Manufacturing Abroad: Exchange Risk Implications (pp. 170-173) Proceedings of the Eighth Annual Meeting of the American Society for Engineering Management.

Presentations

Unal, R. (April 23, 2020). Accelerator Reliability Oral Presentation Newport News.

Unal, R. (July , 2016). Reliability and Maintainability for Complex Systems Oral Presentation Reliability and Maintainability Workshop Newport News.

Bullington, K., Unal, R. and Keating, C. B. (October 15, 2010). ASEM certification: Process, value, and application American Society for Engineering Management Annual Conference Fayetteville, AR.

Unal, R., Keating, C. B. and Bullington, K. (October 16, 2009). MS degree certification process American Society for Engineering Management Annual Conference Branson, MO.

Unal, R. and Hester, P. T. ( 2007). Uncertainty Assessment Using Evidence Theory: A Combined Probabilistic & Non-Probabilistic Approach NASA Langley Vehicle Analysis Branch Hampton, VA.

Monroe, R. w., Lepsch, R. A. and Unal, R. (May , 1998). Addressing Uncertainty in Weight Estimates Using Expert Judgment 57th Annual International Conference .

Monroe, R. W., Lepsch, R. A. and Unal, R. (June , 1996). Risk Analysis of Weight Estimates for a Launch Vehicle SAWE .

Unal, R. (July 24, 1991). Operations Modeling Concepts In-Space Assembly/Serving Facility Workshop Langley Research Center, Hampton, VA.

• Member, Tau Beta Pi
• 2008: Fellow, American Society for Engineering Management
• 1999: Best Paper, Merritt A. Williamson Award, American Society for Engineering Management
• 1997: NASA Group Achievement Award, NASA
• 1994: Best Article, Journal of Parametrics Award
• 1990: Best Article, Journal of Parametrics