08-012-F+erdal_erelErdal Erel
Professor
erel@bilkent.edu.tr | HomePage


Academic Specialization: Production Operations Management
Research interests: Design of manufacturing systems; Assembly and Disassembly Line Balancing; Scheduling and Sequencing; Project Management

Following his graduation from Robert College, he was admitted to Istanbul Technical University where he had his B.S. degree in Industrial Engineering in 1981. He received his M.S. degree in Industrial Engineering from Stanford University in 1983 and Ph.D. degree in Industrial Engineering and Operations Research from Virginia Polytechnic Institute and State University in 1987. Currently he is the director of Institute of Economics and Social Sciences and the Dean of Faculty of Business Administration at Bilkent University.

Selected Publications :

Erel,E.,Hazir, O. and Haouari, M. and  (2015). Robust optimization for the discrete time-cost tradeoff problem with cost uncertainty. In “Handbook on Project Management and Scheduling” (Ed. C. Schwindt and J. Zimmermann). Springer, 865-874. 

Erel, E. and J.B. Ghosh. (2011). Minimizing weighted mean absolute deviation of job completion times from their weighted mean. Applied Mathematics and Computation, 217(22), 9340-9350. 

Erel, E.,Hazir, O., and Gunalay, Y. (2011). Robust Optimization Models for the Discrete Time/Cost Trade-off Problem. International Journal of Production Economics, 130(1), 87-95.   

Erel, E., Hazir, O.and Haouari, M. (2010). Robust Scheduling and Robustness Measures for the Discrete Time/Cost Trade-off Problem. European Journal of Operational Research, 207(2), 633-643. 

Erel, E.,Hazir, O. and Haouari, M. (2010). Discrete time/cost trade-off problem: A decomposition-based solution algorithm for the budget version. Computers & Operations Research, 37(4), 649-655.

Sabuncuoglu, I., Erel, E., and Alp, A. (2009). Ant colony optimization for the single model U-type assembly line. International Journal of Production Economics, 120(2), 287-300.

Koc, A., Sabuncuoglu, I., and Erel, E. (2009). Two Exact Formulations for Disassembly Line Balancing Problem and Task Precedence Diagram Construction using AND/OR Graph. IIE Transactions, 41(10), 866-881.

Serel, D., and Erel, E. (2008). Coordination of staffing and pricing decisions in a service firm. Applied Stochastic Models in Business and Industry, 24(4), 307-323.

Hazır, O., Gunalay, Y., and Erel, E. (2008). Customer order scheduling problem: A comparative metaheuristics approach. International Journal of Advanced Manufacturing Technology, 37(5-6), 589-598.

Erel, E., and Ghosh, J.B. (2008). FPTAS for half-products minimization with scheduling applications. Discrete Applied Mathematics, 156(15), 3046-3056.

Sabuncuoglu, I., Gocgun, Y., and Erel, E. (2008). Backtracking and exchange of information: Methods to enhance a beam search algorithm for assembly line scheduling. European Journal of Operational Research, 186(3), 915-930.

Erel, E., and Ghosh, J.B. (2007). Customer order scheduling on a single machine with family setup times: complexity and algorithms. Applied Mathematics and Computation, 185(1), 11-18.

Erel, E., and Ghosh, J.B. (2007). Batch scheduling to minimize the weighted number of tardy jobs. Computers and Industrial Engineering, 53(3), 394-400.

Erel, E., Gocgun, Y., and Sabuncuoglu, I. (2007). Mixed-model assembly line sequencing using beam search. International Journal of Production Research, 45(22), 5265-5284.

Sabuncuoglu, I., Erel, E., and Gocgun, Y. (2006). Analysis of serial production lines: Characterization study and a new heuristic procedure for optimal buffer allocation. International Journal of Production Research, 44(13), 2499-2523.

Sabuncuoglu, I., Erel, E., and Sekerci, H. (2005). Stochastic assembly line balancing using beam search. International Journal of Production Research, 43(7), 1411-1426.

Sabuncuoglu, I., Kok, A.G., and Erel, E. (2004). Analyses of serial production line systems for interdeparture time variability and WIP inventory systems, International Journal of Operations and Quantitative Management, 10(4), 275-295.

Erel, E., Ghosh, J.B., and Simon, J.T. (2003). New heuristic for the dynamic layout problem. Journal of the Operational Research Society, 54(12), 1275-1282.

Sabuncuoglu, I., Erel, E., and Kok, A.G. (2002). Analysis of assembly systems for interdeparture time variability and throughput. IIE Transactions, 34(1), 23-40.

Erel, E., Sabuncuoglu, I., and Aksu, B.A. (2001). Balancing of U-type assembly systems using simulated annealing. International Journal of Production Research, 39(13), 3003-3015.

Mugan, C.S., and Erel, E. (2000). Distribution of quality costs: Evidence from an aeronautical firm. Total Quality Management, 11(2), 227-234.

Raz, T., and Erel, E. (2000). Optimal timing of project control points. European Journal of Operational Research, 127(2), 252-261.

Sabuncuoglu, I., Erel, E., and Tanyer, M. (2000). Assembly line balancing using genetic algorithms. Journal of Intelligent Manufacturing, 11(3), 295-310.

Sarin, S.C., Erel, E., and Dar-El, E.M. (1999). A methodology for solving single-model, stochastic assembly line balancing problem. OMEGA, The International Journal of Management Science, 27(5), 525-535.

Erel, E., and Gokcen, H. (1999). Shortest-route formulation of mixed-model assembly line balancing problem. European Journal of Operational Research, 116(1), 194-204.

Erel, E., and Sarin, S.C. (1998). A survey of the assembly line balancing procedures. Production Planning & Control, 9(5), 414-434.

Erel, E. (1998). A study on production lines with discrete batch WIP inventory transfer. International Journal of Production Economics, 55(1), 71-85.

Gokcen, H., and Erel, E. (1998). Binary integer formulation for mixed-model assembly line balancing problem. Computers and Industrial Engineering, 34(2), 451-461.

Guvenir, H.A., and Erel, E. (1998). Multicriteria inventory classification using a genetic algorithm. European Journal of Operational Research, 105(1), 29-37.

Erel, E., and Ghosh, J.B. (1997). ISO 9000 implementation in Turkish industry. International Journal of Operations & Production Management, 17(12), 1233-1246.

Gokcen, H., and Erel, E. (1997). A goal programming approach to mixed-model assembly line balancing problem. International Journal of Production Economics, 48(2), 177-185.

Erel, E. (1993). Effect of discrete batch WIP transfer on the efficiency of production lines. International Journal of Production Research, 31(8), 1827-1838.

Erel, E. (1992). The effect of continuous price change on the EOQ. OMEGA, The International Journal of Management Science, 20(4), 523-527.

Onkal, D. and Erel, E. (1992). Management information systems in family planning: Experience of a developing country, International Forum on Information and Documentation, 17(3), 20-24.

Sarin, S.C., Erel, E., and Steiner, G. (1991). Sequencing jobs on a single machine with a common due date and stochastic processing times. European Journal of Operational Research, 51(2), 188-198.

Sarin, S.C., and Erel, E. (1990). Development of cost model for the single-model stochastic assembly line balancing problem. International Journal of Production Research, 28(7), 1305-1316.

Erel, E., and Sarin, S.C. (1989). Scheduling independent jobs with stochastic processing times and a common due date on parallel and identical machines. Annals of Operations Research, 17, 181-198.