EDUCATION

Ph. D. Industrial and Systems Engineering, Lehigh University, USA.

M.S. Industrial and Systems Engineering, Lehigh University, USA.

B.S. Industrial Engineering, Gazi University, TURKEY.

 

RESEARCH INTERESTS

Supply chain management and Logistics

Integration of inventory control and transportation planning

Vendor-Buyer models

Multi item inventory control

Strategic Fleet Sizing

Production and capacity planning in MRO industry

Staff scheduling

 

Tools used; Mathematical programming and decomposition techniques, Meta-heuristics, System simulation

Software used: C++, AMPL/CPLEX, LINGO, MAPLE, ARENA, AWESIM, PROMODEL, GPSS, STATGRAFICS, MINITAB, NeuralWare.

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PROFESSIONAL EXPERIENCE

Associate Professor, TOBB ETU, Industrial Engineering, TURKEY, May 2010 – Present

Consultant on system analysis and improvement, Inventory analysis and control department, Turkish Ministry of Health, October 2011-March 2012

Consultant on costing and performance evaluation for Turkish National Institute of Statistics, September 2010 – January 2011

Assistant Professor, TOBB ETU, Industrial Engineering, TURKEY, February 2007 – January 2010

Assistant Professor, King Fahd University of Petroleum and Minerals (KFUPM), Systems Engineering (Industrial Eng. Program), August 2001 - February 2007

Consultant on system simulation, Saudi Ma’deen Inc., February 2006 - April 2006.

Instructor, Industrial and Systems Engineering, Lehigh University, USA, Fall 1999

Research Assistant, Manufacturing Logistics Institute, Lehigh University, August 1996 - March 2001

Teaching Assistant, Industrial and Systems Engineering, Lehigh University, USA, Spring 1995, Fall 1995, Spring 1996

 

PROJECTS

 

·        Member of the research team from Manufacturing Logistics Institute of Lehigh University and Wharton School of University of Pennsylvania on an NSF funded project “Distributed Decision Framework Integrating Manufacturing Planning and Multiple Supply Chain Management” (#DMI-9634808).

·        Member of the research team from Manufacturing Logistics Institute of Lehigh University on a project with Lucent Technologies, titled “Modeling the Integrated Circuit Supply Chain”

·        Co-investigator in a project titled “INTEGRATED MANUFACTURER-RETAILER SUPPLY CHAIN MODELS”, two-year project, funded by KFUPM

·        Principal (sole) investigator in a project titled “MULTI ITEM INVENTORY ORDERING PROBLEM WITH TRANSPORTATION COST”, (9/2005-), 1.5-year project, funded by SABIC (Saudi Basic Industries)/FAST TRACK

·        Investigator, ”Demand management, overhaul scheduling, and inventory control for the maintenance and repair operations in airline industry“, one year project, funded TUBITAK BIDEB, Program 2219 , 2014.

·        Principal investigator, ”Integrated production scheduling and workforce capacity planning model for the maintenance and repair operations in airline industry “, one year project, funded TUBITAK BIDEB, Program 2219 , 2018.

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PUBLICATIONS

 

Journal papers indexed in SCI/SCI-E and number of citations in google scholar

 

·        N. Karimi and K. Ertogral, “A strategic fleet sizing problem in vendor managed inventory system with predetermined delivery frequencies; A model and analysis”, in press, Computers and Industrial Engineering, Vol. 127, 778-787, 2019.

·        K. Ertogral and F. S. Öztürk, “Integrated production scheduling and workforce capacity planning model for the maintenance and repair operations in airline industry”, in press, Computers and Industrial Engineering, Vol. 127, 832-840, 2019.

·        K. Ertogral, A. Akbalik Raphine, and S. Gonzales, “Modelling and Analysis of the Strategic Fleet Sizing Problem for a Furniture Distributor”, European Journal of Industrial Engineering, Vol.11, No.1, pp.49 – 77, 2017.

·        M. Erkoc and K. Ertogral, “Overhaul planning and exchange scheduling for maintenance services with rotable inventory and limited processing capacity”, Computers and Industrial Engineering, Vol. 98, 30-39, 2016.

·        K. Ertogral, Erkoc, M., and D. H. Ülker, “A production scheduling model and analysis for the maintenance repair and overhaul service providers”, Journal of the Faculty of Engineering and Architecture of Gazi University, 30(3), 513-522, 2015.

·        K. Ertogral, “A Vendor-buyer lot sizing problem with stochastic demand: An exact procedure under service level approach”, European Journal of Industrial Engineering, vol. 5/1, 101-110, 2011.

·        R. Sahin, K. Ertogral, and O. Turkbey, “A Simulated Annealing Heuristic for the Dynamic Layout Problem with Budget Constraint”, Computers & Industrial Engineering, vol. 59/2, 308-313, 2010.

·        K. Ertogral, “A Multi Item Single Source Inventory Ordering Problem with Transportation Cost: A Lagrangean Decomposition Approach”, European Journal of Operational Research, vol. 191, 154-163, 2008.

·        K. Ertogral and B. Bamuqabel, “Developing staff schedules for a bilingual call center with flexible workers”, Computers & Industrial Engineering, vol. 54/1, 118-127, 2008.

·        M. Ben-Daya, M. Darwish, and K. Ertogral, “Joint economic lot sizing problem; A Review and extensions”, European Journal of Operational Research, vol. 185/2, 726-742, 2008.

·        K Ertogral, M. Ben-Daya, and M. Darwish, “Production and shipment lot sizing in vendor-buyer supply chain with transportation cost”, European Journal of Operational Research, vol. 176, 1592-1606, 2007.

·        K. Ertogral and M. Rahim, “Replenish-up-to inventory control policy with random replenishment intervals”, International Journal of Production Economics, vol. 93-94, 399-405, 2005.

·        K. Ertogral and S. D., Wu, “Auction-theoretic coordination of production planning in the supply chain”, IIE Transactions, vol.32, no.10, 931-940, 2000.

(Total number of citations in google scholar 930, h-index=10)

 

Other publications

·        Ertogral, K., Wu, S. D., “A bargaining game for supply chain contracting”, Lehigh University, Department of Industrial Engineering, Technical Report, No: 00T-012, 2001. (Cited 42 times in google scholar)

·        S. S. Azhar Ali, K. Ertogral, “Optimization Techniques in Chemical Processes”, Asian Journal of Engineering, Sciences & Technology, vol. 1/2, 73-78, 2011.

 

Under review/in progress works for journal publication

·        K. Ertogral and F. S. Öztürk, “A fix and optimize heuristic for the integrated production scheduling and workforce capacity planning model for the maintenance and repair operations in airline industry”, manuscript in progress

·        E. G. Göçer, S. Tekin, and K. Ertogral, “Integrated assembly line balancing and buffer allocation problem; A Heuristic approach”, manuscript in progress

·        K. Ertogral, D. H. Ülker, and M. Erkoc, “A problem space search based heuristic solution approach for overhaul planning and exchange scheduling in maintenance services with multiple types rotable inventories”, manuscript in progress

·        B. C. İnanç and K. Ertogral, and K. Derinkuyu, “Optimization of the regional allocation of wind power generation capacity in Turkey”, manuscript in progress

 

Refereed Conferences with proceedings

 

·        N. D. Karimi and K. Ertogral, “Strategic Fleet Sizing Problem in A Vendor Managed Inventory System with Predetermined Delivery Frequencies; A Fix and Optimize Heuristic”, Proceedings of the 2018 IISE Annual Conference, Orlando, USA.

·        Tokgöz, M. S., and Ertogral K, “A fix and optimize heuristic for transportation planning in a single producer multi buyer system”, Proceedings of the XIII. International Logistics & Supply Chain Congress, İzmir, Turkey, 2015.

·        H. Bayram, R. Şahin and K. Ertogral, “A linear programming embedded meta-heuristic for solving multi period cellular manufacturing system design problem”, Proceedings of CIE44 & IMSS’14, 14-16 October 2014, Istanbul / Turkey.

·        K. Ertogral, and A. Akgunduz, “Operator Scheduling Under the Lean Manufacturing Principles in Over-Size Product Manufacturing Facilities”, 4th International Conference on Changeable, Agile, Reconfigurable and Virtual Production, Montreal, Canada October, 2011.

·        R. Sahin, K. Ertogral, and, O Turkbey, “A simulated annealing heuristic for dynamic layout problem with budget constraint”, Proceedings of 6th International Symposium on Intelligent and Manufacturing Systems, Sakarya, Turkey, October 2008.

·        K. Ertogral, “Vendor Buyer Lot Sizing Problem with Stochastic Demand: A Service Level Approach”, Proceedings of the14th International Annual EurOMA Conference, Ankara, Turkey, June 2007.

·        K. Ertogral, “Multi item single source ordering problem; A simulated annealing approach employing simulation”, Proceedings of the 6th Meta-heuristics International Conference, Vienna, Austria, August 2005.

·        M. Darwish, K. Ertogral, and M. Ben-Daya, “Geometric policy with transportation cost for joint economic lot sizing problem”, Proceedings of the 2nd International Industrial Engineering Conference, December 2004, Riyadh, Saudi Arabia.

·        A. S. Azhar, K. Ertogral, and H. N. Al-Duwaish, “Optimization Techniques in Chemical Processes“, Proceedings of the 2nd IEEE GCC 2004 Conference, Manama, Bahrain, November 2004.     

·        K. Ertogral, M. Ben-Daya, and M. Darwish, "Integrated Analysis of production-inventory-transportation planning in two stage supply chains", Proceedings of the 6th Saudi Engineering Conference, Dhahran, Saudi Arabia, December 2002.

·        K. Ertogral, S. D. Wu, and L. I. Burke, “Integrating Production and Transportation Logistics in Supply Chain Environment”, Proceedings of the 9th Industrial Engineering Research Conference, Cleveland, OH, May, 2000. (Technical Report 98T-010, Department of IMSE, Lehigh University, 1998)   

 

Refereed Conferences with abstract proceedings

 

·        F. S. Öztürk and K. Ertogral, “An integrated production scheduling and workforce capacity planning model and analyses for maintenance repair operations in the airline industry”, EURO, 29th European Conference on Operational Research, Valencia, Spain, 2018.

·        K. Ertogral, M Erkoc and D. H. Ulker, “A Problem Space Search Based Heuristic for Overhaul Planning and Exchange Scheduling in Maintenance and Repair Operations Management”, IISE Annual Conference, Orlando, USA, 2018.

·        Burcu Cansu İnanç, Kadir Ertogral and Kürşad Derinkuyu, “Regional Correlation Analysis of Wind Power Generation in Turkey”, 36th National Congress of Operations Research and Industrial Engineering,  İzmir, Turkey, 2016.

·        M. Soydan and K. Ertogral, “A solution approach for scheduling the feeding operations for assembly lines in a dishwasher manufacturing plant”, 35^th National Congress of Operations Research and Industrial Engineering, Ankara, Turkey, 2015.

·        N. D. Karimi and K. Ertogral, “A model and analysis for the strategic problem of fleet sizing and replenishment planning problem under vendor managed inventory setting”, 35^th National Congress of Operations Research and Industrial Engineering, Ankara, Turkey, 2015.

·        Burcu Cansu İnanç, Kadir Ertogral, and İlay Şenköylü, “A heuristic for batching and scheduling composite production in parallel ovens”, 27th European Conference on Operational Research, Glasgow, England, 2015.

·        K. Ertogral, S. Tekin, M. Ekmen, R. Kızılyıldırım, and O. Eren, “A bi-criteria optimization of the material feeding schedule in an assembly line”, 44^th International Conference on Computers and Industrial Engineering, İstanbul, October, 2014.

·        Doğukan H. Ülker, Kadir Ertogral, ve Murat Erkoç, “Devinimli Stoklu Uçak Tamir Bakım Servislerinde Üretim Çizelgeleme”, Yöneylem araştırması ve Endüstri Mühendisliği 34. Ulusal Kongresi, Bursa, Haziran 2014.

·        Kadir Ertogral, ve Şebnem Varlı, “Devlet Hastaneleri İçin Bir Stok Yönetimi Risk belirleme Sistematiği”, Yöneylem araştırması ve Endüstri Mühendisliği 34. Ulusal Kongresi, Bursa, Haziran 2014.

·        Gizem S. Nemutlu, Kadir Ertogral, and Berrin Aytaç, “Newsvendor problem with a second order option and transportation costs”, 26th European Conference on Operational Research, Rome, Italy, July 2013.

·        Emre Meric, Usame Gokcek, Kadir Ertogral, and Ayse Akbalik, ”Dimensionnement de flotte de véhicules et ré-planification de distribution pour un grand distributeur demeubles en Turquie”, 13th ROADEF Conference, Angers, France, April 2012.

·        Kadir Ertogral, and O. Dikmen, “Coordination of the branch closing  times and scheduling the unloading operations in a  parcel transfer center“, 24th European Conference on Operational Research, Lisbon, Portugal, July 2010.

·        O. Dikmen and Kadir Ertogral, “Analyses of the capacity and scheduling problems in a cargo transfer center using simulation”, YAEM (Turkish society of OR and Industrial Engineering) conference, Istanbul, Turkey, July 2010.

·        Kadir Ertogral, Esra Ekici, Ahmet Saygın  Baban,  Zeynep Dönmezoğlu,  Tuğçe  Göllü, “A heuristic approach for layout development in a plastic-injection workshop” YAEM (Turkish society of OR and Industrial Engineering) conference, Ankara, Turkey, July 2009.

·        K. Ertogral, “An optimization based heuristic approach for the dynamic joint replenishment problem with transportations cost”, YAEM (Turkish society of OR and Industrial Engineering) conference, Istanbul, Turkey, July 2008.

·        K. Ertogral, “Cyclical staff scheduling and workforce allocation application for a call center”, 21st European Conference on Operational Research, Reykjavik, Iceland, July 2006.

·        K. Ertogral, “Multi item single source dynamic ordering problem with transportation cost”, 20th European Conference on Operational Research, Rhodes, Greece, July 2004.

·        K. Ertogral, M. Ben-Daya, and M. Darwish, “Production and shipment lot sizing in a two layer supply chain”, EURO/INFORMS Joint International Meeting, Istanbul, Turkey, July 2003.

·        K. Ertogral and M. Rahim, “Replenish-up-to Inventory Control Policy with Random Replenishment Intervals”, 12th International Symposium on Inventories, Budapest, Hungary, August 2002

·        K. Ertogral and S. D. Wu, “A Bargaining model of supply contracts and an Application”, INFORMS conference, San Antonio, TX, USA, November, 2000. (Technical Report 00T-012, Department of IMSE, Lehigh University, 2002)

·        K. Ertogral and S. D. Wu, “Auction-like Coordination of the Production Planning in Supply Chain Environment”, INFORMS Fall Meeting, Philadelphia, PA, USA, 1999.

 · SUPERVISED MASTER OF SCIENCE THESIS WORK

 

·        ONUR DIKMEN, “Scheduling of the transfer center and the coordination of vehicle departure times from branches for Aras Cargo”, 2010.

·        BILAL METO, “A hybrid genetic algorithm approach for scheduling in flexible job shop problems”, 2013.

·        GIZEM SULTAN NEMUTLU, “Determining order size for the newsboy problem with transportation cost and second order option”, 2013.

·        DOGUKAN HAZAR ÜLKER, “Modeling, analyzes, and problem space search based solution approach for scheduling maintenance repair operations in airline industry.” 2015.

·        MEHMET SERKAN TOKGOZ, “Transportation planning in a single producer multiple customer system”, 2015.

·        MELIS OZCAN, “A heuristic solution approach for scheduling assembly line feeding operations”, 2016.

·        NIOUSAH KARIMI DASTJERD, “A fix-and-optimize heuristic for the integrated fleet sizing and replenishment planning problem with predetermined delivery frequency”, 2016.

·        BURCU CANSU INANC, ”Optimization of regional allocation of wind power capacity for Turkey”, 2017.

·        FATMA SEDANUR ÖZTÜRK, “Integrated production scheduling and workforce capacity planning model for the maintenance and repair operations in airline industry”, 2018.

·        ELİF GİZEM GÖÇER, “Integrated assembly line balancing and buffer allocation problem; A Heuristic approach”, 2018.

·        ABDURRAHMAN YAVUZ, “A Bass-diffusion model based forecasting approach for fashion products and a real case application”, in progress.

        

 

COURSES TAUGHT

Lehigh University; Operations Research: Stochastic models

 

KFUPM; Operations Research II, Stochastic System Simulation, Production Systems and Inventory Control, Engineering Statistics I and II, Sequencing and Scheduling, Introduction to Industrial Engineering, Numerical Methods, Advanced Linear Programming (Graduate course), Advanced System Simulation (Graduate Course)

 

 

 

TOBB ETU; Introduction to Industrial Engineering, Operations Research I and II, Production Systems Planning, Operations Management (MBA course), Advanced Linear Programming (Graduate course), Supply Chain Management, Analytical Models in Supply Chain (Graduate Course)

 

HOBBIES

football, basketball, tennis, poetry, swimming, Turkish classical music, instrumentals, jazz, nature and historic documentaries, traveling.

 

 

LANGUAGES

Turkish (Native tongue)

 

English (Advanced )

 

Arabic (Beginner)

 

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