• A free-slack-based genetic algorithm for the robotic cell problem with controllable processing times 

      Al-Salem, Mohammed; Haouari, Mohamed; Kharbeche, Mohamed; Khallouli, Wael ( Springer New York LLC , 2016 , Book chapter)
      We present a novel genetic algorithm for the Robotic Cell Problem with controllable processing times. This challenging problem arises in an automated production cell that consists of m consecutive machines as well as a ...
    • A preemptive bound for the Resource Constrained Project Scheduling Problem 

      Haouari, Mohamed; Kooli, Anis; Neron, Emmanuel; Carlier, Jacques ( Springer US , 2014 , Article)
      The Resource Constrained Project Scheduling Problem is one of the most intensively investigated scheduling problems. It requires scheduling a set of interrelated activities, while considering precedence relationships, and ...
    • A PSO approach for robust aircraft routing 

      Ben Ahmed, Mohamed; Mansour, Farah Zeghal; Haouari, Mohamed ( IEEE Computer Society , 2016 , Conference Paper)
      To mitigate the impact of unpredictable disruptions, airlines are seeking to proactively design schedules that incorporate some robustness features. In this paper, we propose a novel simulation-optimization approach using ...
    • A simulation-optimisation approach for supply chain network design under supply and demand uncertainties 

      Salem, Roba W.; Haouari, Mohamed ( Taylor and Francis Ltd. , 2017 , Article)
      We investigate a three-echelon stochastic supply chain network design problem. The problem requires selecting suppliers, determining warehouses locations and sizing, as well as the material flows. The objective is to ...
    • An optimization-based heuristic for the machine reassignment problem 

      Mrad, Mehdi; Gharbi, Anis; Haouari, Mohamed; Kharbeche , Mohamed ( Springer New York LLC , 2016 , Article)
      We address the machine reassignment problem proposed in the context of the ROADEF/EURO challenge 2012 in partnership with Google. The problem consists in reassigning a set of processes to a set of multiple-resource machines ...
    • Exact solution methods for a generalized assignment problem with location/allocation considerations 

      Ghoniem, Ahmed; Flamand, Tulay; Haouari, Mohamed ( INFORMS Inst.for Operations Res.and the Management Sciences , 2016 , Article)
      We investigate modeling approaches and exact solution methods for a generalized assignment problem with location/allocation (GAPLA) considerations. In contrast with classical generalized assignment problems, each knapsack ...
    • Lifted polynomial size formulations for the homogeneous and heterogeneous vehicle routing problems 

      Leggieri, Valeria; Haouari, Mohamed ( Elsevier B.V. , 2017 , Article)
      We propose compact formulations for the symmetric and asymmetric capacitated vehicle routing problems. These formulations are obtained by lifting, using the Reformulation-Linearization Technique, a novel polynomial size ...
    • Optimal design of a district cooling grid: structure, technology integration, and operation 

      Al-Noaimi, Fadi; Khir, Reem; Haouari, Mohamed ( Taylor and Francis Ltd. , 2019 , Article)
      The concept of a district cooling grid that allows the integration of several cooling technologies with different availability and supply patterns is introduced. An integrated multi-period optimization model for a district ...
    • Optimization Models For Multiple Resource Planning 

      Z. Al-Dossari, Norah Mohammed; Haouari, Mohamed; Kharbeche, Mohamed ( Qatar University Press , 2021 , Poster)
      Multiple resource planning is a very crucial undertaking for most organizations. Apart from reducing operational complexity, multiple resource planning facilitates efficient allocation of resources, which reduces costs by ...
    • Optimization-based very large-scale neighborhood search for generalized assignment problems with location/allocation considerations 

      Ghoniem, Ahmed; Flamand, Tulay; Haouari, Mohamed ( INFORMS Inst.for Operations Res.and the Management Sciences , 2016 , Article)
      This paper introduces a novel class of generalized assignment problems with location/allocation considerations that arises in several applications including retail shelf space allocation. We consider a set of items where ...
    • Parcel delivery by vehicle and drone 

      El-Adle, Amro M.; Ghoniem, Ahmed; Haouari, Mohamed ( Taylor and Francis Ltd. , 2019 , Article)
      We investigate a single-vehicle parcel delivery problem in which customers may be served either by the vehicle or by a portable companion drone launched from the vehicle. The problem may be viewed as a Traveling Salesman ...
    • Solving a large-scale integrated fleet assignment and crew pairing problem 

      Ozener, Okan Orsan; Matoglu, Melda Ormeci; Erdogan, Gunes; Haouari, Mohamed; Sozer, Hasan ( Springer New York LLC , 2017 , Article)
      Airline schedule planning problems are typically decomposed into smaller problems, which are solved in a sequential manner, due to the complexity of the overall problems. This results in suboptimal solutions as well as ...