2014
Saharidis G.K.D., Kolomvos G., Liberopoulos G., Modeling and Solution Approach for the Environmental Traveling Salesman Problem, Engineering Letters, 22(2): 70-74, 2014.
Golias M.M., Portal I., Konur D., Kaisar E., Kolomvos G., Robust vessel scheduling at marine container terminals, Computers and Operations Research, 41:412-422, 2014.
Saharidis G.K.D., Dimitropoulos C. and Skordilis E., Minimizing waiting times at transitional nodes for public bus transportation in Greece, Operational Research: An International Journal, DOI 10.1007/s12351-013-0139-0.
Golias M.M., Saharidis G.K.D., Ivey S., Haralambides H.E. and Ji K., Advances in truck scheduling at a cross-dock facility, International Journal of Information Systems and Supply Chain Management, (in press).
Azad N., Davoudpour H., Saharidis G.K.D. and Shiripour M., A new model to mitigating random disruption risks of facility and transportation in supply chain network design, International Journal of Advanced Manufacturing Technology, 2014; 70: 1757–1774.
J. Coletsos, C. Ntakolia, Operations Research on Air Traffic Management; A support System for Free Flight Concept, 20th Conference of the International Federation of Operational Research Societies, The Art of Modeling, IFORS, Barcelona, 13th-18th July, 2014.
J. Coletsos, C. Ntakolia, Operations research on Air Traffic Management (ATM) of the future, HOBA 2014 International Conference, Hellenic Open University, Athens, March 8-9, 2014.
J. Coletsos, C. Ntakolia, Air Traffic Management: The free flight concept (Lower Level), 3rd International Symposium and 25th National Conference on Operational Research in Transportation, Energy and the Environment, Hellenic Operational Society (HELORS) and The University of Thessaly, Volos, June 26-28, 2014.
Saharidis G.K.D., Liberopoulos G., Kolomvos G., Modeling and Solution Approach for the Environmental Traveling Salesman Problem, 20th Conference of the International Federation of Operational Research Societies (IFORS 2014), July 13th – 18th, Barcelona, Spain.
Kolomvos G., Saharidis G.K.D. and Golias M.M., Improvements in Exact Solution Method for Traveling Salesman Problem, 93rd Annual Meeting of the Transportation Research Board (TRB) 2014, January 12th-16th, Washington D.C., USA.
2013
Azad N., Saharidis G.K.D., Davoudpour H., Malekly H. and Yektamaram S.A., Strategies for protecting supply chain networks against facility and transportation disruptions: An improved Benders decomposition approach, Annals of Operations Research, 2013; 210(1): 125-163.
Karafa J., Golias M.M., Ivey S., Saharidis G.K.D. and Leonardos N., The berth allocation problem with stochastic vessel handling times, International Journal of Advanced Manufacturing Technology, 2013; 65(1-4): 473-484.
Tang L., Jiang W. and Saharidis G.K.D., An improved Benders decomposition algorithm for the logistics network design problem with capacity expansions of existing warehouses, Annals of Operations Research, 2013; 210(1):165-190.
Konur D., Golias M.M., Cost-stable truck scheduling at a cross-dock facility with unknown truck arrivals: A meta-heuristic approach, Transportation Research Part E: Logistics and Transportation Review, 49(1), 2013.
J. Coletsos, B. Kokkinis, Optimal Control of Nonlinear Elliptic PDEs – Theory and Optimization Methods, 9th International Conference, Large-Scale Scientific Computing, LSSC 2013, Sozopol Bulgaria, June 3-7, 2013.
Kolomvos G., Golias M.M., Liberopoulos G. and Saharidis G.K.D., Solution approach for the traveling salesman problem, INFORMS 2013, October 6th-9th, Minneapolis, Minnesota, USA.
Saharidis G.K.D. and Liberopoulos G., Environmental vehicle routing problem, 2nd International Symposium and 24th National Conference on Operational Research 2013, September 26th-28th, Athens, Greece, EU.
Saharidis G.K.D., Dimitropoulos C. and Skordilis E., Minimizing waiting times at transitional nodes for public bus transportation in Greece, 92nd Annual Meeting of the Transportation Research Board (TRB) 2013, January 13th-17th, Washington D.C., USA.
2012
Golias M.M., Saharidis G.K.D., Boile M. and Theofanis S., Scheduling of inbound trucks at a cross-docking facility: bi-objective vs bi-level modeling approaches, International Journal of Information Systems and Supply Chain Management, 2012; 5(1): 20-37.
Golias M.M., Saharidis G.K.D, Ivey S. and Lipinski M.E., Scheduling inbound trucks at a cross-dock facility under truck arrival uncertainty, 91st Annual Meeting of the Transportation Research Board (TRB) 2012, January 22nd-26th, Washington D.C., USA.
J. Coletsos, D. Stogiannis, Introduction to Operational Research, academic book, 720 pages, Symeon publications, Athens 2012.
2011
Eisa A. Al-Said, M. A. Noor, Anwar H. Almualim, B. Kokkinis, J. Coletsos, Quartic spline method for solving second-order boundary value problems, Int. Journal of the Physical Sciences, Vol. 6(17), PP. 4208-4212, 2011.
Muhammad Aslam Noor, Khalida Inayat Noor, M. Rafiq, Eisa Said, J. Coletsos, Homotopy perturbation method for solving a system of third-order boundary value problems, Int. Journal of the Physical Sciences, Vol. 6(16), PP. 4128-4133, 2011.
Saharidis G.K.D., Boile M. and Theofanis S., Initialization of the Benders master problem using valid inequalities applied to fixed-charge network problems, Expert Systems With Applications 2011; 38(6): 6627-6636.
I. Chryssoverghi, J. Coletsos, B. Kokkinis, Lirkov, Ivan (Editor) Et. Al., Classical and Relaxed Progressively Refining Discretization-Optimization Methods for Optimal Control Problems Defined by Ordinary Differential Equations, 8th International Conference, Large-Scale Scientific Computing, LSSC 2011, Sozopol Bulgaria, June 6-10, 2011, Revised Selected Papers, Berlin: Springer, Lecture Notes In Computer Science 7116, Pp. 106-114, 2012.
Golias M.M., Saharidis G.K.D., Ivey S. and Lipinski M.E., Risk averse truck scheduling at a cross-dock facility, 90th Annual Meeting of the Transportation Research Board (TRB) 2011, January 23rd-27th, Washington D.C., USA.
Karafa J., Golias M.M., Ivey S., Saharidis G.K.D. and Leonardos N., Berth scheduling at dedicated marine container terminals: Limited berth capacity case (11-1554), 90th Annual Meeting of the Transportation Research Board (TRB) 2011, January 23rd-27th, Washington D.C., USA.
Karafa J., Golias M.M., Ivey S., Saharidis G.K.D. and Leonardos N., Scheduling at a cross dock facility with stochastic truck arrival times, In: Ed. Khodr H.M, Scheduling Problems and Solutions. Nova Publishing, 2011 ISBN 978-1-61470-689-2.
2010
Zhang T., Saharidis G.K.D., Theofanis S. and Boile M., Scheduling of inbound and outbound trucks at cross-docks: modeling and analysis, Transportation Research Record: Journal of the Transportation Research Board, 2010; 2162: 9-16.
Kozanidis, G., G. Liberopoulos, C. Pitsilkas, Flight and maintenance planning of military aircraft for maximum fleet availability, Military Operations Research, 15(1): 53-73, 2010.
J. Coletsos, A. Kainich, Modelling the diffusion of chain emails, EURO XXIV Lisbon, 24th European Conference on Operational Research, July 2010.
I. Chryssoverghi, J. Coletsos, Β. Kokkinis, Optimization methods for optimal control problems with control and pointwise state constraints, 24TH European Conference οn Operational Research, July 2010.
Saharidis G.K.D., M.M. Golias, M. Boile, S. Theofanis, Optimizing seaside operations at dedicated marine container terminals: The limited berth capacity case, EURO XXIV 2010, July 11th-14th, Lisbon, Portugal, EU.
Zhang T., Saharidis G.K.D., Theofanis S. and Boile M., Scheduling of inbound and outbound trucks at cross-docks: Multiobjective approach, 89th Annual Meeting of the Transportation Research Board (TRB) 2010, January 10th-14th, Washington D.C., USA.
Karafa J., Kolomvos G., Golias M. M. and Saharidis G.K.D., Truck scheduling at a cross-dock facility: Accounting for travel time variability, INFORMS 2010, November 7th-10th, Austin, Texas, USA.
Kolomvos G., Golias M., Ivey S. and Saharidis G.K.D., Berth scheduling at marine container terminals under uncertainty, INFORMS 2010, November 7th-10th, Austin, Texas, USA.
Saharidis G.K.D., Jiang W. and Tang L., The logistics network design problem with capacity expansions of existing warehouses, INFORMS 2010, November 7th-10th, Austin, Texas, USA (Invited Speeker).
Saharidis G.K.D., Golias M.M, Theofanis S. and Boile M., New formulation for the assignment of inbound truck in cross docking facilities, International Conference on Transportation Research 2010, September 27th-28th, Volos, Greece.
2009
Golias M.M., Saharidis G.K.D., Boilé M., Theofanis S., Ierapetritou M., The berth allocation problem: Optimizing vessel arrival time, Journal of Maritime Economics and Logistics, 114),pp. 358-377, 2009.
Golias M.M., Boilé M., Theofanis S., Service time based customer differentiation berth scheduling, Transportation Research Part E: Logistics and Transportation Review, 45(6):878-892, 2009.
G. Kozanidis, A multiobjective model for maximizing fleet availability under the presence of flight and maintenance requirements, Journal of Advanced Transportation, 43(2): 155-182, 2009.
I. Chryssoverghi, J. Coletsos, B. Kokkinis, Lirkov, Ivan (Editor) Et. Al., Classical and Relaxed Optimization Methods for Non Linear Parabolic Optimal Control Problems, 7th International Conference, Large-Scale Scientific Computing, LSSC 2009, Sozopol Bulgaria, June 4-8, 2009, Revised Papers, Berlin: Springer, Lecture Notes In Computer Science 5910, Pp. 247-255, 2010.
J. Coletsos, A. Anagnostopoulou, Business plan optimization using decision making theory, 21st National Conference of Hellenic company of Operational Research, Decision making in health systems, Athens, 2009.
2008
Saharidis G.K.D., Boile M., Golias M., Ierapetritou M. and Theofanis S., The Multi-objective berth scheduling problem with customer differentiation: Single-level vs bi-level, INFORMS 2008, October 12th-15th, Washington D.C., USA.
2007
I. Chryssovergis, J. Coletsos, B. Kokkinis, Classical and relaxed Optimization Methods for Optimal Control Problems, Int. Math. Forum 2. No. 29-32, pp. 1477-1498, 2007.
2006
I. Chryssovergis, J. Coletsos, B. Kokkinis, Discretization Methods for Optimal Control Problems with State Constraints, J. Comput. Appl. Math., No. 1, pp. 1-31, 2006.
I. Chryssovergis, J. Coletsos, J. Geiser, B. Kokkinis, Discretization-Optimization Methods for Nonlinear Parabolic Relaxed Optimal Control Problems with State Constraints, Humboldt University, Berlin, 2006.
I. Chryssovergis, J. Coletsos, J. Geiser, B. Kokkinis, Discretization-Optimization Methods for Nonlinear Elliptic Relaxed Optimal Control Problems with State Constraints, Institute of Mathematics, Humboldt University, Berlin, 2006.
J. Coletsos, B. Kokkinis, Optimization Methods for Nonlinear Elliptic Optimal Control Problems with State Constraints, WSEAS Transactions on Mathematics, ISSUE 11, Vol. 5, pp. 1169-1176, Nov 2006.
2005
I. Chryssovergis, J. Coletsos, B. Kokkinis, Discretization Methods for Nonconvex Optimal Control Problems with State Constraints, J. Numer. Funct. Anal. Optim., Vol. 26, No. 3, pp. 321-348, 2005.
J. Coletsos, Discretization-Optimization Methods for Relaxed Optimal Control Problems, 7th International Workshop on Mathematical Methods in Scattering Theory and Biomedical Engineering, Numphaio, Greece, 2005.
2004
I. Chryssovergis, J. Coletsos, B. Kokkinis, Approximate Gradient Projection Method with Runge-Kutta Schemes for Optimal Control Problems, Comp. Optim. Appl., Vol. 29, No. 1, pp. 91-115, 2004.
I. Chryssovergis, J. Coletsos, B. Kokkinis, Classical and Relaxed Discretization Methods for Semilinear Parabolic Optimal Control Problems, Panhellenic Conference on Mathematical Analysis and Applications, NTUA, Athens, 2004.
2002
E. Melachrinoudis and G. Kozanidis, A mixed integer knapsack model for allocating funds to highway safety improvements, Transportation Research Part A: Policy and Practice, 36(9): 789-803, 2002.
I. Chryssovergis, J. Coletsos, B. Kokkinis, Progressively Refining Discrete Methods for Constrained Optimal Control Problems, 4th GRACM Congress on Computational Mechanics, Patra, 2002.
2001
I. Chryssovergis, J. Coletsos, B. Kokkinis, Approximate Relaxed Descent Method for Optimal Control Problems, Control & Cybernetics, Vol. 30, No. 4, pp. 385-404, 2001.
J. Coletsos, Mixed Gradient Penalty Method for Optimal Control Problems defined by Semilinear Parabolic Equations, Proceedings of 5th Hellenic-European Conference on Computer Mathematics and its Applications HERCMA 2001.
J. Coletsos, B. Kokkinis, Discrete Gradient Methods for Optimal Control Problems Defined by Semilinear Parabolic Equations, 20th IFIP TC7 Conference on System Modeling and Optimization, Trier, Germany, July 2001.
2000
J. Coletsos, I. Chryssovergis, B. Kokkinis, Numerical Methods for Nonconvex Optimal Control Problems, 1st Interdisciplinary Symposium on Nonlinear Problems, NTUA, Athens, Greece, 2000.
1999
I. Chryssovergis, J. Coletsos, B. Kokkinis, Discrete Relaxed Method for Semilinear Parabolic Optimal Control Problems, Control & Cybernetics, Vol. 28, No. 2, pp. 157-176, 1999.
J. Coletsos, I. Chryssovergis, B. Kokkinis, Discrete Relaxed Method for Nonconvex Optimal Control and Variational Problems, 19th IFIP TC7 Conference on Systems, Modeling and Optimization, Cambridge, U.K., 1999.
1998
I. Chryssovergis, A. Bacopoulos, J. Coletsos, B. Kokkinis, Discrete Approximation of Nonconvex Hyperbolic Optimal Control Problems with State Constraints, Control & Cybernetics, Vol. 27, No. 1, pp. 29-50, 1998.
1997
I. Chryssovergis, A. Bacopoulos, B. Kokkinis, J. Coletsos, Mixed Frank-Wolfe Penalty Method with Applications to Nonconvex Optimal Control Problems, Journal of Optimization Theory and Applications (JOTA), Vol. 94, No2, pp. 311-334, 1997.
1996
J. Coletsos, I. Chryssovergis, B. Kokkinis, Approximation of Nonconvex Semilinear Hyperbolic Optimal Control Problems, Proceedings of the Third Hellenic-European Conference on Mathematics and Informatics Hermis 96, Athens, University of Economics and Business, pp. 238-245, 1996.
1992
J. Coletsos, I. Chryssovergis, Approximation of Nonlinear Boundary Parabolic Optimal Control Problems, Proceedings of the First Hellenic-European Conference on Mathematics and Informatics Hermis 92, Athens, University of Economics and Business, pp. 63-67, 1992.