Research Activities and Publications

Research Projects

Center faculty and graduate students are actively involved in a variety of research projects.  A partial list of these projects is provided below.

·         Collaborative Research: Mitigating the Cost of Anarchy in Complex Supply Chain Systems; National Science Foundation (2009-2012)

·         Characterizing the Tradeoffs and Costs Associated with Transportation Congestion in Supply Chains; Center for Multimodal Solutions for Congestion Mitigation (2008-2009)

·         Solving tactical logistics planning problems under uncertainty (National Science Foundation, 2004-2008).

·         Optimizing Linkages in Multistage Production/Distribution Systems (National Science Foundation, 2003-2007).

·         SEEK: Scalable Extraction of Enterprise Knowledge (National Science Foundation)

·         Organized Mobile Business Agents

Edited Books associated with SCALE Conferences

·         Supply Chain Optimization J. Geunes and P.M. Pardalos (Eds.) 2005. Supply Chain Optimization, Springer, ISBN No. 0-387-26280-6.

·         Applications of Supply Chain Management and E-Commerce Research E. Akçalı, J. Geunes, P.M. Pardalos, H.E. Romeijn, and Z.-J. Shen, (Eds.). Springer, New York, ISBN No. 0-387-23391-1.

·         Supply Chain Management: Models, Applications, and Research Directions (J. Geunes, P.M. Pardalos, and H.E. Romeijn, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands (2002).

Publications (2008)

·         Ahuja, R.K., K.C. Jha, and G. Sahin, 2008. New approaches for solving the block-to-train assignment problem. Networks 51, 48-62.

·         Ahuja, R.K. and D.S. Hochbaum, 2008. Solving linear cost dynamic lot sizing problems in O(n log n) time. Operations Research 56, 255-261.

·         Bakal, I.S. and J. Geunes. 2008. Analysis of Order Timing Tradeoffs in Multi-Retailer Supply Systems.

Forthcoming in the International Journal of Production Research.

·         Bakal, I.S., J. Geunes, H.E. Romeijn. 2008. Market Selection Decisions for Inventory Models with Price-Sensitive Demand. Journal of Global Optimization 41(4), 633-657.

·         Taaffe, K., J. Geunes, H.E. Romeijn. 2008. Target Market Selection with Demand Uncertainty: The Selective Newsvendor Problem. European Journal of Operational Research 189(3), 987-1003.

·         Vaidyanathan, B., R.K. Ahuja, and J.B. Orlin, 2008. The locomotive routing problem. Transportation Science 42, 492-507.

·         Vaidyanathan, B., R.K. Ahuja, J. Liu, and L.A. Shughart, 2008. Real-life locomotive planning: New formulations, algorithms and computational results.  Transportation Research B, 147-168.

·         Yang, B., J. Geunes. 2008. Predictive-Reactive Scheduling on a Single Resource with Uncertain Future Jobs.  European Journal of Operational Research 189(3), 1267-1283.

·         Yang, B. and J. Geunes. 2008. Independent Inventory Control in Multi-Component Assemble-to-Order

Systems. Forthcoming in International Journal of Operational Research.

Publications (2007)

·         Ahuja, R.K., W. Huang, H.E. Romeijn, D. Romero Morales. A heuristic approach to the multi-period single-sourcing problem with production and inventory capacities and perishability constraints. INFORMS Journal on Computing 19:1 (2007), 14-26.

·         Burke, G., J. Geunes, H.E. Romeijn, A. Vakharia. 2007. Allocating Procurement to Capacitated Suppliers with Concave Quantity Discounts. Operations Research Letters 36, 103-109.

·         Choi, J., S.X. Bai, J. Geunes, H.E. Romeijn. 2007. Manufacturing Delivery Performance for Supply Chain Management. Mathematical and Computer Modelling 45, 11-20.

·         Ekşioğlu, S.D., B. Ekşioğlu, H.E. Romeijn. A Lagrangean heuristic for integrated production and transportation planning problems in a dynamic, multi-item, two-layer supply chain. IIE Transactions 39:2, 2007, 191-201.

·         Geunes, J., Z.-J. Shen, A. Emir. 2007. Planning and Approximation Models for Delivery Route Based Services with Price-Sensitive Demands. European Journal of Operational Research 183(1), 460-471.

·         Merzifonluoğlu, Y., J. Geunes, H.E. Romeijn. 2007. Integrated Capacity, Demand, and Production Planning with Subcontracting and Overtime Options. Naval Research Logistics 54(4), 433-447.

·         Romeijn, H.E., J. Geunes, K. Taaffe. 2007. On a Nonseparable Convex Maximization Problem with Continuous Knapsack Constraints. Operations Research Letters 35, 172-180.

·         Romeijn, H.E., J. Shu, C.P. Teo. Designing two-echelon supply networks. European Journal of Operational Research 178:2, 2007, 449-462.

·         Sargut, F.Z. H.E. Romeijn. Capacitated production and subcontracting in a serial supply chain. IIE Transactions 39:11, 2007, 1031-1043.

·         Sargut, F.Z., H.E. Romeijn. Lot-sizing with nonstationary cumulative capacities. Operations Research Letters 35:4, 2007, 549-557.

·         Sargut, F.Z., H.E. Romeijn. Capacitated requirements planning with pricing flexibility and general cost and revenue functions. Journal of Industrial and Management Optimization 3:1, 2007, 87-98.

·         Yang, B., J. Geunes. 2007. Inventory and Lead-Time Planning with Lead-Time Sensitive Demand. IIE Transactions 39(5), 439-452.

·         Yang, B., J. Geunes. 2007. A Single Resource Scheduling Problem with Job-Selection Flexibility, Tardiness Costs and Controllable Processing Times. Computers & Industrial Engineering 53, 420-432.

Publications (2006)

·         Alonso Ayuso, A., L.F. Escudero, C. Pizarro, H.E. Romeijn, D. Romero Morales. On solving the multi-period single-sourcing problem under uncertainty. Computational Management Science 3, 2006, 29-53.

·         Ekşioğlu, S.D., H.E. Romeijn, P.M. Pardalos. Cross-facility management of production and transportation planning problem. Computers & Operations Research 33:11, 2006, 3231-3251.

·         Geunes, J., H.E. Romeijn, K. Taaffe. 2006. Requirements Planning with Pricing and Order Selection Flexibility. Operations Research 54(2), 394-401.

·         Jiang, L., J. Geunes. 2006. Impact of Introducing Make-to-Order Options in a Make-to-Stock Environment. European Journal of Operational Research 174(2), 724-743.

·         Merzifonluoğlu, Y., J. Geunes. 2006. Uncapacitated Production and Location Planning Models with Demand Fulfillment Flexibility. International Journal of Production Economics 102, 199-216.

·         Odijk, M.A., H.E. Romeijn, H. van Maaren. Random generation of periodic event schedules with an application to railway timetabling. Computers & Operations Research 33:8, 2006, 2283-2299.

Publications (2005)

·         S. van Hoesel, H.E. Romeijn, D. Romero Morales, A.P.M. Wagelmans. Integrated lot-sizing in serial supply chains with production capacities. Management Science 51:11 (2005), 1706-1719.

·         S. Sindhuchao, H.E. Romeijn, E. Akçalı, and R. Boondiskulchok. An integrated inventory-routing system for multi-item joint replenishment with limited vehicle capacity. Journal of Global Optimization 32(1) 93-118 (2004).

·         J. Choi, J. Cao, H.E. Romeijn, J. Geunes, and S.X. Bai. A stochastic multi-item inventory problem with unequal replenishment intervals and limited warehouse capacity. IIE Transactions 37(12), 1129-1142 (2005).

·         W. Huang, H.E. Romeijn, and J. Geunes. The Continuous-time Single-Sourcing Problem with production and inventory capacity constraints and expansion opportunities. Naval Research Logistics 52(3),193-211 (2005).

·         Sindhuchao, S., H.E. Romeijn, E. Akçalı, R. Boondiskulchok. An integrated inventory-routing system for multi-item joint replenishment with limited vehicle capacity. Journal of Global Optimization 32:1, 2005, 93-118.

·         Van Hoesel, S., H.E. Romeijn, D. Romero Morales, A.P.M. Wagelmans. Integrated lot-sizing in serial supply chains with production capacities. Management Science 51:11, 2005, 1706-1719. 

Publications (2004)

·         A. Balakrishnan, J. Geunes, and M. Pangburn. Coordinating supply chains by controlling upstream variability propagation. Manufacturing & Service Operations Management 6(2), 163-183 (2004).

·         H.E. Romeijn and D. Romero Morales. Asymptotic analysis of a greedy heuristic for the multi-period single-sourcing problem: the acyclic case. Journal of Heuristics 10, 5-35 (2004).

·         J. Geunes, Z.-J. Shen, and H.E. Romeijn. Economic ordering decisions with market selection flexibility. Naval Research Logistics 51, 117-136 (2004).

·         B. Yang, J. Geunes, and W.J. O’Brien. A heuristic approach for minimizing weighted tardiness and overtime costs in single resource scheduling. Computers & Operations Research 31(8), 1273-1301 (2004).

·         R.K. Ahuja, D. Hochbaum, and J.B. Orlin. A cut based algorithm for the convex dual of the minimum cost network flow problem. Algorithmica 39(3), 189-208 (2004).

·         Y.Z. Wang, L. Jiang, and Z.-J. Shen. Consignment sales, price-production decisions and channel performances. Management Science 50(1), 34-47 (2004).

·         Handbook of Quantitative Supply Chain Analysis: Modeling in the E-Business Era (D. Simchi-Levi, S.D. Wu, and Z.-J. Shen, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands (2004).

·         J. Hammer and W. O’Brien. Enabling supply chain coordination: leveraging legacy sources for rich decision support. in: Applications of Supply Chain Management and E-Commerce Research (J. Geunes, E. Akçalı, P.M. Pardalos, H.E. Romeijn, and Z.-J. Shen, editors). Springer, New York, (2004).

Publications (2003)

·         A. Balakrishnan and J. Geunes. Production planning with flexible product specifications: an application to specialty steel manufacturing. Operations Research 51(1), 94-112 (2003).

·         R. Freling, H.E. Romeijn, D. Romero Morales, and A.P.M. Wagelmans. A Branch and Price algorithm for the multi-period single-sourcing problem. Operations Research 51, 922-939 (2003).

·         J. Geunes and P.M. Pardalos. Network optimization in supply chain management and financial engineering: an annotated bibliography. Networks 42(2), 66-84 (2003).

·         J. Geunes and A.Z. Zeng. Optimizing supply shortage decisions in base-stock distribution operations. Forthcoming in Journal of Global Optimization 26(1), 25-42 (2003).

·         J. Geunes. Solving large-scale requirements planning problems with component substitution options. Computers & Industrial Engineering 44(3), 475-491 (2003).

·         H.E. Romeijn and D. Romero Morales. An asymptotically optimal greedy heuristic for the multi-period single-sourcing problem: the cyclic case. Naval Research Logistics 50, 412-437 (2003).

·         Z.-J. Shen, C. Coullard, and M. Daskin. A joint location-inventory model. Transportation Science 37, 40-55 (2003).

·         R.K. Ahuja, D. Hochbaum, and J.B. Orlin. Solving the convex cost integer dual network flow problem. Management Science 49(7), 950-964 (2003).

·         R.K. Ahuja, J. B. Orlin, S. Pallottino, and M. Scutella. Dynamic shortest paths minimizing travel times and costs. Networks 41(4), 197-205 (2003).

·         W. O’Brien. 4D CAD and dynamic resource planning for specialist contractors: case study and issues. In: 4D CAD and Visualization in Construction: Developments and Applications (R. Issa, I. Flood, and W. O’Brien, editors), A.A. Balkema, Lisse, The Netherlands, 101-124 (2003).

Publications (2002)

·         A. Balakrishnan, J. Geunes, and M. Pangburn. Coordinating the distribution chain: new models for new challenges. In: Supply Chain Management: Models, Applications, and Research Directions (J. Geunes, P. Pardalos, and H.E. Romeijn, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands (2002).

·         W.J. O’Brien, R. Issa, J. Hammer, M. Schmalz, J. Geunes, and S. Bai. SEEK: Accomplishing enterprise information integration across heterogeneous sources. ITCON 7, 101-124 (2002).

·         H.E. Romeijn and D. Romero Morales. A greedy heuristic for a three-level multi-period single-sourcing problem. In: Quantitative Approaches to Distribution Logistics and Supply Chain Management (A. Klose, M.G. Speranza, L.N. Van Wassenhove, editors). Springer-Verlag, Berlin, Germany, 191-214 (2002).

·         P. Chaovalitwongse, H.E. Romeijn, and P.M. Pardalos. A scenario-based heuristic for a capacitated transportation-inventory problem with stochastic demands. In: Computational Methods in Decision-Making, Economics and Finance (E. Kontoghiorghes, B. Rustem, S. Siokos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands (2002).

·         S.D. Ekşioğlu, P.M. Pardalos, and H.E. Romeijn. A dynamic slope scaling procedure for the fixed-charge cost multi-commodity network flow problem. In: Financial Engineering, e-Commerce and Supply Chain (P.M. Pardalos, V.K. Tsitsiringos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands, 247-270 (2002).

·         A. Chan, A. Muriel, Z.-J. Shen, and D. Simchi-Levi. On the effectiveness of zero-inventory-ordering policies for the economic lot-sizing model with a class of piecewise linear cost structures. Operations Research 50, 1058-1067 (2002).

·         A. Chan, A. Muriel, Z.-J. Shen, D. Simchi-Levi, and C.-P Teo. Effective zero-inventory-ordering policies for the single-warehouse multiretailer problem with piecewise linear cost structures. Management Science 48, 1446-1460 (2002).

·         M. Daskin, C. Coullard, and Z.-J. Shen. An inventory-location model: formulation, solution algorithm and computational results. Annals of Operations Research 110(1), 83-106 (2002).

·         R.K. Ahuja, and J. B. Orlin. Very large-scale neighborhood search for airline fleet scheduling. SIAM News 35(9) (2002).

·         R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. Introduction to network optimization. In: Handbook of Applied Optimization (M. Resende and P.M. Pardalos, editors). Oxford University Press, 352-362 (2002).

·         R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. 2002. Maximum flow problem. In: Handbook of Applied Optimization (M. Resende and P.M. Pardalos, editors). Oxford University Press, 363-374 (2002).

·         R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. 2002. Minimum spanning tree problem. In: Handbook of Applied Optimization (M. Resende and P.M. Pardalos, editors). Oxford University Press, 422-430 (2002).

·         R.K. Ahuja, J.B. Orlin, S. Pallottino, and M. Scutella. Minimum time and minimum cost path problems in street networks with traffic lights. Transportation Science 36, 326-336 (2002).

Publications (2001)

·         J. Geunes and A.Z. Zeng. Impacts of inventory shortage policies on transportation requirements in two-stage distribution systems. European Journal of Operational Research 129(2), 299-310 (2001).

·         H.E. Romeijn and D. Romero Morales. Generating experimental data for the Generalized Assignment Problem. Operations Research 49, 866-878 (2001).

·         H.E. Romeijn and D. Romero Morales. A probabilistic analysis of the multi-period single-sourcing problem. Discrete Applied Mathematics 112, 301-328 (2001).

·         R.K. Ahuja, J.B. Orlin, and D. Sharma. A composite neighborhood search algorithm for the capacitated minimum spanning tree problem. Operations Research Letters 31, 185-194 (2001).

·         R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. The maximum flow problem. In: Encyclopedia of Optimization, volume III (C.A. Floudas and P.M. Pardalos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands, 249-260 (2001).

·         R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. The minimum cost flow problem. In: Encyclopedia of Optimization, volume III (C.A. Floudas and P.M. Pardalos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands, 292-302 (2001).

·         R.K. Ahuja, J.B. Orlin, and D. Sharma. Multi-exchange neighborhood search structures for the capacitated minimum spanning tree problem. Mathematical Programming 91(1), 71-97 (2001).

·         R.K. Ahuja, J.B. Orlin, D. Sharma. A composite neighborhood search algorithm for the capacitated minimum spanning tree problem. Operations Research Letters 31, 185-194 (2001).

·         P.M. Pardalos and L. Pitsoulis. Quadratic assignment problem. In: Encyclopedia of Optimization, volume IV (C.A. Floudas and P.M. Pardalos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands, 405-436 (2001).

·         D.-Z. Du, B. Lu, H. Ngo, and P.M. Pardalos. Steiner tree problems. In: Encyclopedia of Optimization, volume V (C.A. Floudas and P.M. Pardalos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands, 227-290 (2001).

·         S.D. Ekşioğlu, B. Ekşioğlu, and P.M. Pardalos. Solving large scale fixed charge network flow problems). In: Equilibrium Problems and Variational Models (A. Maugeri, F. Giannesi, and P.M. Pardalos, editors). Kluwer Academic Publishers, Dordrecht, The Netherlands (2001).

 

Publications (2000)

·         A. Balakrishnan and J. Geunes. Requirements planning with substitutions: exploiting bill-of-materials flexibility in production planning. Manufacturing & Service Operations Management 2(2), 166-185 (2000).

·         H.E. Romeijn and N. Piersma. A probabilistic feasibility and value analysis of the Generalized Assignment Problem. Journal of Combinatorial Optimization 4, 325-355 (2000).

·         H.E. Romeijn and D. Romero Morales. A class of greedy algorithms for the Generalized Assignment Problem. Discrete Applied Mathematics 103, 209-235 (2000).

·         P.T. Sokkalingam, R.K. Ahuja, and J.B. Orlin. A new polynomial-time cycle-canceling algorithm for the minimum cost flow problem. Networks 36, 53-63 (2000).

·         R.K. Ahuja and J.B. Orlin. A faster algorithm for the inverse spanning tree problem. Journal of Algorithms 34, 177-193 (2000).

·         J.B. Orlin and R. K. Ahuja. Minimum spanning trees, Shortest paths, Maximum flows, Minimum cost flow. In: CRC Handbook of Discrete and Combinatorial Mathematics (K.H. Rosen, editor). CRC Press, New York, 629-633, 652-683 (2000).

·         R.K. Ahuja, J.B. Orlin, and A. Tiwari. A greedy genetic algorithm for the quadratic assignment problem. Computers and Operations Research 27, 917-934 (2000).

·         R.K. Ahuja, D. Hochbaum, and J.B. Orlin. Solving the convex cost integer dual network flow problem. Proceedings of the Integer Programming and Combinatorial Optimization (IPCO) Conference (G. Cornuejols, R.E. Burkard, and G.J. Woeginger, editors). Lecture Notes in Computer Science 1610, 31-44 (2000).

·         W. O'Brien and M. Fischer. Importance of capacity constraints to construction cost and schedule. ASCE Journal of Construction Engineering and Management 126(5), 366-373 (2000).

 

Research Reports

·         K. Fu, V.N. Hsu, and C.-Y. Lee.  Inventory and production decisions for an assemble-to-order system with uncertain demand and limited assembly capacity. SCaLE Center Research Report 2006-01, University of Florida (2006).

·         Z. Li. The value of jointly optimizing technology selection and inventory control. SCaLE Center Research Report 2004-02, University of Florida (2004).

·         Z. Li and S.X. Xu. Managing a single product assemble-to-order system with technology innovations. SCaLE Center Research Report 2004-02, University of Florida (2004).

·         H.E. Romeijn, D. Sharma, and R.L. Smith. Extreme point solutions for infinite network flow problems. Research Report, Department of Industrial and Systems Engineering, University of Florida (2004).

·         Z.-J. Shen and M. Daskin. Tradeoffs between customer service and cost in an integrated supply chain design framework. Research Report, Department of Industrial and Systems Engineering, University of Florida (2004).

·         J. Cao and H.E. Romeijn. Inventory management in a semi-Markov modulated demand environment. Research Report, Department of Industrial and Systems Engineering, University of Florida (2003).

·         R.K. Ahuja, K.C. Jha, J.B. Orlin, and D. Sharma. Very large scale neighborhood search algorithm for the quadratic assignment problem. Research Report, Department of Industrial and Systems Engineering, University of Florida (2002).

·         R.K. Ahuja, J. Liu, J.B. Orlin, D. Sharma, and L.A. Shughart. Solving real-life locomotive scheduling problems. Research Report, Department of Industrial and Systems Engineering, University of Florida (2002).

·         R.K. Ahuja, J.B. Orlin, S. Pallottino, M.P. Scaparra, and M. Scutella. A multi-exchange heuristic for the single source capacitated facility location. Research Report, Department of Industrial and Systems Engineering, University of Florida (2002).

·         S. van Hoesel, H.E. Romeijn, D. Romero Morales, and A.P.M. Wagelmans. Polynomial time algorithms for some multi-level lot-sizing problems with production capacities. Research Report 2002-6, Department of Industrial and Systems Engineering, University of Florida (2002).

·         R.K. Ahuja, J. Goodstein, A. Mukherjee, J.B. Orlin, D. Sharma. A very large-scale neighborhood search algorithm for the combined through-fleet assignment model. Research Report, Department of Industrial and Systems Engineering, University of Florida (2001).

 

·         1998 NSF Workshop on Supply Chain Management in Electronic Commerce Final Report