Choose the Question Before the Score
A small error or an improved average answers only its own question. Event timing and worst-group reliability need their own checks.
Topic
Cities & engineering
Transport, energy, infrastructure and engineered systems.
Start with an article
Filter writing on this topic →What Must a Traffic Model Remember?
A controlled ring-road study separates hidden velocity, projection-induced memory, noisy observation, and numerical sensitivity, asking when a better traffic forecast also gives a better stability diagnosis.
Did the Hotspot Move, or Did It Grow?
Two spatial maps can share a convincing least-cost explanation without revealing the history that produced them. A controlled unbalanced optimal transport study separates endpoint fit, numerical convergence and evidence for movement versus local growth.
When Solar Power Changes Fast: Why Better Intervals Are Still Not Reliable Enough
A five-station study asks whether solar prediction intervals remain trustworthy during rapid power changes and missing sensor inputs. Better calibration improves every station, yet the hardest groups still fall far below the intended coverage.
When a Reduced Ventilation Model Leaves Its Training Regime
A frozen synthetic POD and POD-DEIM audit verifies its full-order reference, then stops because both reduced models fail before any declared ventilation shift is applied.
When a Traffic Solver Invents a Jam
A failure-preserving LWR benchmark shows how final shock-grid alignment can make a cell-average norm look exact while threshold arrival and queue accounting remain biased.
Follow a reading path
All paths →City models: from forecasts to decisions
Start with a classroom timetable, then examine missing traffic states, numerical event errors and the limits of model reduction.
First: When the Timetable Lies to the Ventilation System
Go a little deeper
Research programmes
Urban and Mobility Systems
Models of routing, accessibility, traffic stability, fleet operations, and infrastructure trade-offs.
Project overviews
2026
Accessible Multimodal Routing at Gongbei
A cohort-aware model of how slopes, stairs, transfers, crowding, and missing elevators change routes through a border hub.
2026
Drug Dissolution Model Hierarchy
A reproducible comparison of empirical release laws, finite-sink spherical diffusion, and moving-front dynamics with model-selection and identifiability audits.
2026
Interpretable EV Dispatch and Replenishment
A white-box pipeline links energy prediction, fairness-aware scheduling, and disruption-triggered replanning.
2026
Non-isothermal CSTR Hysteresis
A nonlinear reactor study maps multiplicity, ignition and extinction hysteresis, basin dependence, and critical slowing near a thermal fold.
2026
Occupancy-Aware Classroom Ventilation
A shared-capacity predictive-control benchmark for classroom CO₂ exposure when actual room use departs from the timetable.
2026
Phantom Traffic-Jam Stability
Microscopic traffic experiments examine when small disturbances grow into persistent stop-and-go waves.