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L’Université Gustave Eiffel recherche un doctorant en ingénierie pour un projet sur le service de demande en situation d’urgence. L’objectif est d’optimiser la mobilité urbaine en période de crise, avec une approche multidisciplinaire intégrant des méthodes de modélisation et simulation. Le candidat devra posséder un master en ingénierie, mathématiques appliquées ou un domaine similaire, avec un intérêt marqué pour la gestion de crise. Le projet inclut des séjours de recherche à l'Université IUAV de Venise, favorisant l'internationalité et l'innovation dans le domaine.
Organisation/Company Université Gustave Eiffel Department COSYS Research Field Engineering » Civil engineering Mathematics » Applied mathematics Computer science » Modelling tools Computer science » Programming Researcher Profile First Stage Researcher (R1) Positions PhD Positions Country France Application Deadline 24 Aug 2025 - 00:00 (Europe/Paris) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 7 Jul 2025 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No
In the face of increasingly frequent and complex crises, ranging from natural disasters to infrastructure breakdowns and pandemics, ensuring accessible and adaptable mobility services is a growing priority for urban transport systems. This PhD research, conducted in collaboration between Université Gustave Eiffel and IUAV University of Venice, introduces a novel concept: the On-Emergency Demand service. Building on the principles of on-demand mobility, this service is reconfigured specifically for crisis contexts. The Covid-19 pandemics has dramatically highlighted the impacts of emergency conditions on urban transport, both from the supply and demand side, resulting in a radical change of the consolidated mobility schemes[1,2].
Previous studies have shown that shared mobility and on-demand transport services, when effectively designed, can significantly enhance accessibility [3,4]. Their inherently flexible nature makes them promising candidates for deployment during emergency events. However, their traditional design must be transformed to meet the unique constraints of crisis response. In particular, the matching process between riders and vehicles must be highly efficient, prioritize evacuation urgency, and operate with minimal delay [5]. In this sense, the identification, design and sizing of meeting points, as well as the transport management of these areas is another fundamental aspect to be considered.
Unlike conventional on-demand services, which typically optimize objectives such as profit maximization or fleet utilization [6], On-Emergency Demand (OED) must adhere to alternative mathematical formulations. These include:
Objective functions aimed at minimizing total clearance time, maximizing population coverage, and ensuring equitable service delivery;
Constraints reflecting safety-critical priority rules, real-time road network disruptions, and shelter or hospital capacity limitations;
Matching algorithms that prioritize proximity to threat zones, compliance with evacuation protocols, and dynamic routing based on vehicular communication [5].
The research will focus on three core areas:
Methodology:
The proposed methodology integrates both system-level modeling and algorithmic optimization. First, the problem will be framed through a comprehensive risk assessment, accounting for the type of disaster, network topology, and the spatial distribution of critical destinations such as hospitals and shelters. These elements will guide the definition of dynamic demand and network vulnerability profiles.
The optimization component will target real-time rider-to-vehicle matching under crisis constraints. The mathematical formulation will integrate multi-objective functions (e.g., minimizing evacuation time, maximizing access equity), and be subject to constraints reflecting real-time network disruptions, traffic bottlenecks, and prioritized routing to critical facilities. Techniques such as time-dependent shortest path algorithms will be explored. To ensure scalability and adaptability in real-time contexts, heuristic and metaheuristic approaches, including large neighborhood search, will be incorporated.
The simulation framework will be built on open-source, agent-based simulation platforms such as MATSim or SUMO, enabling detailed modeling of individual traveler behavior, transport system dynamics, and network degradation during emergency conditions. This will facilitate the evaluation of On-Emergency Demand performance across different types of crises (e.g., fast-onset wildfires vs. gradual flooding), demand profiles, and urban forms. Key features will include dynamic demand generation, adaptive routing, and infrastructure disruptions.
Ultimately, simulation outputs will be validated against empirical data from real-world scenarios, including the 2018 Camp Fire evacuation in California, evacuation planning scenarios in Luxembourg, and real or simulated case studies located in the north-eastern part of Italy. This validation will support the generalizability and reliability of the proposed models. The combined expertise from prior work on dynamic ride-sharing, evacuation under communication constraints, and accessibility policy metrics provides a solid foundation for the interdisciplinary and practical development of this service.
References
[1] Nocera S., Bruzzone F., Cavallaro F., 2024. COVID-19 response in Italy: Focus on public transport. In: Shibayama T., Emberger G. (eds.), International perspectives on public transport responses to COVID-19, pp. 329-339. Elsevier, Amsterdam. DOI: 10.1016/B978-0-443-13295-7.00031-9. ISBN: 978-0-443-13295-7
[2] Cavallaro F., Nocera S. (2024). Covid-19 effects on transport-related air pollutants: Insights, evaluations, and policy perspectives. Transport Reviews 44(2): 483-516. doi: 10.1080/01441647.2023.2225211
[3] Bruzzone, F., Cavallaro, F., & Nocera, S. Accessibility potential of long-distance Mobility-as-a-Service.
[4] Alisoltani, N., & Leclercq, L., Zargayouna, M. Can dynamic ride-sharing reduce traffic congestion?
[5] Idoudi, H., Ameli, M., Alisoltani, N., & Zargayouna, M. Large-Scale Evacuation with Vehicular Communication: Navigating Through Dark Zones.
[6] Alisoltani, N., Delhoum, Y., Ameli, M., & Zargayouna, M. Optimizing Shared Mobility: A Penalized Column Generation Model for Peer-to-Peer Ride-Sharing.
[7] Cavallaro, F., Bruzzone, F., & Nocera, S. Accessibility to cultural economy opportunities by high-speed rail.
E-mail negin.alisoltani@univ-eiffel.fr
Research Field Engineering » Civil engineering Education Level Master Degree or equivalent
Research Field Engineering » Industrial engineering Education Level Master Degree or equivalent
Research Field Computer science » Modelling tools Education Level Master Degree or equivalent
Research Field Mathematics » Applied mathematics Education Level Master Degree or equivalent
Skills/Qualifications
Research Field Engineering » Civil engineeringMathematics » Applied mathematicsComputer science » Modelling toolsComputer science » Programming
The thesis will take place under the PIONEER+ project, a European Universities Alliance, coordinated by université Gustave Eiffel.
Candidates pre-selected by the thesis supervisors will be invited to an interview in English before a panel composed of members of the PIONEER alliance between September 22nd and October 15th, 2025.
Additional comments
The doctoral candidate will conduct 12 months of research mobility at IUAV University of Venice during the PhD program.