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Mr Junxiang Xu

Mr Junxiang Xu

Research Associate
Engineering
Civil and Environmental Engineering

Junxiang Xu holds a PhD in Civil Engineering (Transport) and is currently a Research Associate at UNSW Sydney, specialising in evacuation network design and disaster transport resilience. He has developed optimisation frameworks for pre-disaster evacuation planning that account for uncertain demand, behavioural choice, network reliability, equity, and evolving disruption conditions. His current research focuses on the application of quantum physics and quantum computing to disaster-resilient transport systems, including models of disruption propagation based on quantum percolation and quantum walks, together with quantum and hybrid optimisation methods for identifying critical infrastructure, improving transport network efficiency, and supporting optimal responses to floods, fires, and other extreme events. His work integrates operations research, artificial intelligence, quantum physics, and quantum computing to develop practical decision-support methods for resilient transport systems.
E-mail
junxiang.xu@unsw.edu.au
Location
Civil Engineering Building (H20) Level 1, Room CE111
  • Journal articles | 2026
    Xu J; Nair DJ; Jayakumar Nair D, 2026, 'If given chances to choose again: a stated preference survey for flood evacuation behaviour', Transportation, pp. 1 - 39, http://dx.doi.org/10.1007/s11116-026-10780-4
    Journal articles | 2026
    Xu J; Nair DJ; Waller ST; Jayakumar Nair D, 2026, 'Ethical dilemmas in disaster evacuation network planning: concepts and frameworks', Transportation, pp. 1 - 43, http://dx.doi.org/10.1007/s11116-026-10773-3
    Journal articles | 2026
    Xu J; Nair DJ; Waller ST; Jayakumar Nair D, 2026, 'From ethical dilemmas to ethical cascading failure in disaster evacuation planning', Natural Hazards Research, 6, pp. 421 - 429, http://dx.doi.org/10.1016/j.nhres.2025.10.002
    Journal articles | 2026
    Xu J, 2026, 'Ethical cascading failure in disaster management', Natural Hazards, 122, http://dx.doi.org/10.1007/s11069-026-08117-6
    Journal articles | 2025
    Xu J; Jayakumar Nair D; Waller ST, 2025, 'Artificial intelligence in disaster management: achievements, challenges, and prospects', Natural Hazards, 121, pp. 23977 - 24033, http://dx.doi.org/10.1007/s11069-025-07667-5
    Journal articles | 2025
    Xu J; Nair DJ; Waller ST; Jayakumar Nair D, 2025, 'Implementing equitable wildfire response plans', Science New York N Y, 388, pp. 158 - 159, http://dx.doi.org/10.1126/science.adv8893
    Journal articles | 2025
    Xu J; Nair DJ; Waller ST; Jayakumar Nair D, 2025, 'Pre-disaster evacuation transport network design under uncertain demand and connectivity reliability: a novel bi-level programming model', Transportation Research Interdisciplinary Perspectives, 32, pp. 101556, http://dx.doi.org/10.1016/j.trip.2025.101556
    Journal articles | 2024
    Xu J; Jayakumar Nair D; Haghani M, 2024, 'Relief network design problem (RNDP): A scoping review, challenges, and opportunities', International Journal of Disaster Risk Reduction, 104, pp. 104364, http://dx.doi.org/10.1016/j.ijdrr.2024.104364
    Journal articles | 2024
    Xu J; Jayakumar Nair D; Travis Waller S; Waller ST, 2024, 'Exploring the pre-disaster evacuation network design problem under five traffic equilibrium models', Computers and Industrial Engineering, 196, pp. 110506, http://dx.doi.org/10.1016/j.cie.2024.110506
    Journal articles | 2024
    Xu J; Nair DJ; Jayakumar Nair D, 2024, 'Data-Driven Network Connectivity Analysis: An Underestimated Metric', IEEE Access, 12, pp. 60908 - 60927, http://dx.doi.org/10.1109/ACCESS.2024.3393968
    Journal articles | 2024
    Xu J; Nair DJ, 2024, 'Pre-disaster evacuation network design with uncertain demand and behavioural choices: A bi-criteria generalized cost perspective', Transportation Research Interdisciplinary Perspectives, 26, pp. 1 - 23, http://dx.doi.org/10.1016/j.trip.2024.101186
    Journal articles | 2021
    Xu J; Zhang J; Guo J, 2021, 'Contribution to the field of traffic assignment: A boundedly rational user equilibrium model with uncertain supply and demand', Socio-Economic Planning Sciences, 74, pp. 100949, http://dx.doi.org/10.1016/j.seps.2020.100949
  • Preprints | 2026
    Ashutosh A; Nair D; Xu J; Liu J; Secadiningrat J; Dixit V, 2026, Modelling Mode Choice Preferences for Advanced Air Mobility: An Integrated Choice and Latent Variable Approach, http://dx.doi.org/10.2139/ssrn.6794998
    Preprints | 2026
    Xu J; Dixit V; Waller ST; Nair DJ; Qianwen ; Guo ; Jian S; Wen X; Ashutosh A; Yoo S; Secadiningrat J; Guo J, 2026, ResiliFlow: An Open Transport World Model for Infrastructure Perception and Disaster Resilience, https://arxiv.org/abs/2608.20709v1
    Preprints | 2026
    Xu J; Nair D; Waller T, 2026, Ethical trade-offs in disaster evacuation planning: a worst-case optimisation framework, http://dx.doi.org/10.2139/ssrn.6540238
    Preprints | 2026
    Xu J; Nair DJ; Waller T, 2026, Ethical trade-offs in disaster evacuation network planning: A worst-case optimisation framework, http://dx.doi.org/10.2139/ssrn.6861775
    Preprints | 2026
    Xu J; Niu C; Nair DJ; Dixit V, 2026, Quantum Optimisation for Transport Vulnerability Identification, http://dx.doi.org/10.48550/arxiv.2604.02661
    Preprints | 2026
    Xu J; Niu C; Nair DJ; Dixit V, 2026, Quantum optimisation in cities: Limitations and prospects of urban transport systems, http://dx.doi.org/10.48550/arxiv.2604.02671
    Preprints | 2026
    Xu J; Niu C; Zhang T; Nair DJ; Dixit V, 2026, Data-driven identification of critical links in transport networks using quantum annealing, http://dx.doi.org/10.48550/arxiv.2604.02675
    Preprints | 2025
    Xu J; Nair D; Waller T, 2025, Ethical Dilemmas in Disaster Evacuation Network Planning: Concepts and Frameworks, http://dx.doi.org/10.2139/ssrn.5143107
    Conference Papers | 2025
    Xu J; Nair DJ; Jayakumar Nair D, 2025, 'Reevaluating Network Connectivity: The Critical Role of the Relative Size of Largest Connected Component (RSLCC)', in Transportation Research Procedia, Elsevier, pp. 298 - 303, http://dx.doi.org/10.1016/j.trpro.2025.06.071

  • 2024: Humanitarian Engineering HDR Grant, UNSW 

  • 2024: Professional Development Grant (Engineering), UNSW 

  • 2023: Humanitarian Engineering HDR Grant, UNSW 

  • 2025: Chinese Government Award for Outstanding Self-financed Students Abroad (Category A, USD 6,000), China Scholarship Council.

  • 2025: First Place, School-Level 3-Minute Thesis (3MT) Competition, School of Civil and Environmental Engineering, UNSW.

  • 2025: Winner, 3-Minute Thesis (3MT) Competition, Research Centre for Integrated Transport Innovation (rCITI), UNSW.

  • 2025: Second Place, Faculty of Engineering 3-Minute Thesis (3MT) Competition Heat, UNSW.

  • 2025: Finalist (Top 19 university-wide), UNSW 3-Minute Thesis (3MT) Competition.

  • 2025: Highest Impact Factor Student Publication Award (T3), Research Centre for Integrated Transport Innovation (rCITI), UNSW.

  • 2024: Winner, 3-Minute Thesis (3MT) Competition, Research Centre for Integrated Transport Innovation (rCITI), UNSW.

  • 2024: Third Place, School-Level 3-Minute Thesis (3MT) Competition, School of Civil and Environmental Engineering, UNSW.

  • 2024: Highest Impact Factor Student Publication Award (T2), Research Centre for Integrated Transport Innovation (rCITI), UNSW.