Πλοήγηση ανά Συγγραφέα "Kozanidis, G."
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Column generation for scheduling shipments within a supply chain network with the minimum number of vehicles
Kozanidis, G. (2014)We consider the problem of scheduling a set of shipments between different nodes of a supply chain network. Each shipment has a fixed departure time, as well as an origin and a destination node, which, combined, determine ... -
Energy-reserve markets with non-convexities: An empirical analysis
Andrianesis, P.; Liberopoulos, G.; Kozanidis, G. (2009)In this paper, we address the design of a joint energy - reserve electricity market with non-convexities which are due to the fixed costs and capacity constraints of the generation units. Motivated by the relevant literature ... -
An exact solution algorithm for maximizing the fleet availability of a unit of aircraft subject to flight and maintenance requirements
Gavranis, A.; Kozanidis, G. (2015)We address the Flight and Maintenance Planning (FMP) problem, i.e., the problem of deciding which available aircraft to fly and for how long, and which grounded aircraft to perform maintenance operations on in a group of ... -
An exact solution algorithm for maximizing the fleet availability of an aircraft unit subject to flight and maintenance requirements
Gavranis, A.; Kozanidis, G. (2013)Flight and Maintenance Planning (FMP) of mission aircraft addresses the question of which available aircraft to fly and for how long, and which grounded aircraft to perform maintenance operations on, in a group of aircraft ... -
Exact solution methodologies for linear and (mixed) integer bilevel programming
Saharidis, G. K. D.; Conejo, A. J.; Kozanidis, G. (2013)Bilevel programming is a special branch of mathematical programming that deals with optimization problemswhich involve two decisionmakers who make their decisions hierarchically. The problem's decision variables are ... -
Flight and Maintenance Planning of Military Aircraft for Maximum Fleet Availability
Kozanidis, G.; Liberopoulos, G.; Pitsilkas, C. (2010)Every aircraft, military or civilian, must be grounded for maintenance after it has completed a certain number of flight hours since its last maintenance check. Flight and maintenance planning (FMP) of military aircraft ... -
Heuristics for flight and maintenance planning of mission aircraft
Kozanidis, G.; Gavranis, A.; Liberopoulos, G. (2014)Flight and Maintenance Planning (FMP) of mission aircraft addresses the question of which available aircraft to fly and for how long, and which grounded aircraft to perform maintenance operations on, in a group of aircraft ... -
Integrating Operational Hedging of Exchange Rate Risk in the Optimal Design of Global Supply Chain Networks
Longinidis, P.; Georgiadis, M. C.; Kozanidis, G. (2015)Supply chain network (SCN) design and operation is a strategic and value adding process for all synchronous companies. In the face of globalization, several issues should be contemplated and incorporated in decision support ... -
Mixed integer least squares optimization for flight and maintenance planning of mission aircraft
Kozanidis, G.; Gavranis, A.; Kostarelou, E. (2012)We address the problem of generating a joint flight and maintenance plan for a unit of mission aircraft. The objective is to establish a balanced allocation of the flight load and the maintenance capacity to the individual ... -
Mixed integer parametric bilevel programming for optimal strategic bidding of energy producers in day-ahead electricity markets with indivisibilities
Kozanidis, G.; Kostarelou, E.; Andrianesis, P.; Liberopoulos, G. (2013)We address the problem of finding the optimal bidding strategy of an energy producer that participates in a single-period day-ahead electricity market, assuming full knowledge of the market's parameters. The problem is ... -
A Multiobjective Model for Maximizing Fleet Availability under the Presence of Flight and Maintenance Requirements
Kozanidis, G. (2009)Every aircraft, military or civilian, must be grounded for maintenance after it has completed a certain number of flight hours since its last maintenance check. In this paper, we address the problem of deciding which ... -
Performance evaluation of an automatic transfer line with WIP scrapping during long failures
Liberopoulos, G.; Kozanidis, G.; Tsarouhas, P. (2007)We develop a model of a failure-prone, bufferless, paced, automatic transfer line in which material flows through a number of workstations in series, receiving continuous processing along each workstation. When a workstation ... -
Production scheduling of a multi-grade PET resin plant
Liberopoulos, G.; Kozanidis, G.; Hatzikonstantinou, O. (2010)We present a discrete-time, Mixed Integer Linear Programming (MILP) model for the production scheduling of a continuous-process multi-grade PET resin plant. The objective is to minimize the cost associated with grade ... -
A recovery mechanism with loss-related profits in a day-ahead electricity market with non-convexities
Andrianesis, P.; Liberopoulos, G.; Kozanidis, G.; Papalexopoulos, A. D. (2011)In wholesale electricity markets, unit commitment costs and capacity constraints create non-convexities which may bring about losses to some of the participating generation units. To keep the losing units in the market, a ... -
Recovery mechanisms in a joint energy/reserve day-ahead electricity market with non-convexities
Andrianesis, P.; Liberopoulos, G.; Kozanidis, G.; Papalexopoulos, A. D. (2010)The goal of this paper is to evaluate the incentive compatibility of several cost- and bid-based recovery mechanisms that may be implemented in a wholesale electricity market to make the generation units whole in the ... -
Recovery Mechanisms in Day-Ahead Electricity Markets With Non-Convexities-Part I: Design and Evaluation Methodology
Andrianesis, P.; Liberopoulos, G.; Kozanidis, G.; Papalexopoulos, A. D. (2013)In centralized day-ahead electricity markets with marginal pricing, unit commitment costs and capacity constraints give rise to non-convexities which may result in losses to some of the participating generating units. ... -
Recovery Mechanisms in Day-Ahead Electricity Markets With Non-Convexities-Part II: Implementation and Numerical Evaluation
Andrianesis, P.; Liberopoulos, G.; Kozanidis, G.; Papalexopoulos, A. D. (2013)In centralized day-ahead electricity markets with marginal pricing, unit commitment costs and capacity constraints give rise to non-convexities which may result in losses to some of the participating generating units. To ... -
Solving the linear multiple choice knapsack problem with two objectives: profit and equity
Kozanidis, G. (2009)In this paper, we study an extension of the Linear Multiple Choice Knapsack (LMCK) Problem that considers two objectives. The problem can be used to find the optimal allocation of an available resource to a group of disjoint ...