Ant Colony with Dynamic Local Search for the Time Scheduling of Transport Networks

This article presents an ant colony optimization for the time scheduling of public transport traffic. In fact, the assistance of a decision support system becomes necessary for the real-time regulation of this transport networks since the size of the search space increases exponentially with the number of vehicles and stops. So, we propose an ant colony algorithm with dynamic local search, in the case of unpredictable disturbance. This approach consists in applying a local search window with increasing dimension according to the iterations. It treats the regulation problem as an optimization and provides the regulator with relevant decisions. A regulated timetable is proposed as solution aiming at minimizing the waiting time of passengers. We insure the three most important criteria of regulation which are the punctuality, the regularity and the correspondence

Reconfigurable Supply Chain Selection: Literature Review, Research Roadmap and New Trends

The COVID-19 pandemic revealed weaknesses in the global supply chain management. With stock-outs, transportation problems and the bullwhip effect caused by ever-changing demand, it is necessary for decision-makers to review their supply chain configuration. The latter must adapt to new market changes and respond quickly and cost-effectively to customer requirements. In fact, the selection criteria of the most reconfigurable configuration, i.e., the configuration that adapts its structure and its functions to the new market changes, must respond to this problem. The aim of this paper is to conduct a literature review of the criteria and methods for configuration selection in reconfigurable manufacturing systems and reconfigurable supply chains. This study allows to define a roadmap for the configuration selection in reconfigurable supply chains based on the most efficient reconfigurability criteria. We provide new trends to consider in this selection problem. This paper allows managers to choose the most appropriate criteria to implement a reconfigurable supply chain

SARR : système d'aide à la régulation et la reconfiguration des réseaux de transport multimodal

II est bien difficile, en temps réel, de suivre les horaires issus du processus de planification des réseaux de transport réalisée en temps anticipé. En effet, l'apparition de perturbations complexes et aléatoires nécessite un traitement rapide à travers un processus de régulation. Dans ce contexte, nous proposons un système d'Aide à la décision nommé SARR (Système d'Aide à la Régulation et la Reconfiguration), pour assister les exploitants dans ces tâches de gestion d'exploitation. Les premières contributions portent sur l'élaboration d'un module d'apprentissage et de classification utilisant la technique S.V.M (Séparateurs à Vaste Marge) pour le diagnostic et la régulation des cas familiers. Mais dans les cas de perturbations plus complexes, simultanées et difficiles à gérer, nous proposons alors une première approche à colonie de fourmis pour la reconfiguration spatiale nommé ACFRS (Algorithme à Colonie de Fourmis pour la Reconfiguration Spatiale). Un autre algorithme est développé pour la régulation horaire appelé ACFRH (Algorithme à Colonie de Fourmis pour la Régulation Horaire). Ces deux approches disposent de bonnes performances en termes de convergence et qualité de solutions, Ces dernières sont prouvées et montrés à travers des scénarii de simulation.LILLE1-BU (590092102) / SudocSudocFranceF

Reconfigurable Supply Chain Performance: A Bibliometric Analysis

International audienceMarket disruptions and changes make the assessment process of supply chain performance more complex. Hence, the implementation of key indicators to evaluate the ability of the supply chain to cope with these disruptions has received increasing attention. Reconfigurability provide the ability to quickly change supply chain structure and functions by increasing its responsiveness and flexibility to deal with disruptions. This paper aims to analyze the contributions of researchers in the field of performance evaluation under supply chain disruption. A bibliometric analysis is conducted to identify publications dealing with performance evaluation under supply chain disruption field. The analysis started with the selection of articles using the following keywords (Reconfigurability, Evaluation, Supply Chain). Then, the selected articles were analyzed based on the criteria of the bibliometric analysis. The paper aims to capture the current research and potentialresearch related to the evaluation of performance in reconfigurable supply chain under disruption

Proposition d’une approche de reconfiguration des processus métiers de la chaîne logistique

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Towards a business process reconfiguration

International audienceThe continuous search for flexibility leads companies to implement reconfigurable supply chains. In this article, we focus on the reconfiguration of supply chains through the business processes that compose them. We propose an approach of reconfiguration based on an integrated QFD "Quality Function Deployment"/ AHP "Analytic Hierarchy Process" model that allows to determine the processes, activities, roles and actors that require reconfigurations. Our aims is to determine a compromise between the scenario of reconfiguration chosen and the business processes on the one hand, and to prioritize activities, roles and actors on the other hand