Global Disruption Atlas
Disruption decision lab on a 3D globe: live IMF PortWatch chokepoint data, sea-graph rerouting, min-cost flow re-planning, time-to-survive versus time-to-recover, a Monte Carlo and a 32-option flexibility portfolio.
For the analysts who vet the work: the validation approach and live test suites, the methods behind each offer, the research, and every tool.
Each model is checked against an independent reference before it is used: the CFD solver against Hagen–Poiseuille flow, the Haberman–Sayre wall-corrected Stokes drag and Johnson & Patel’s sphere wakes; the robot kinematics on 1,600+ checks; the warehouse layout against an independent FreeCAD model. The suites run in CI:
Each decision tool also carries its own test suite and validation notes in its folder of the portfolio repository. The chess tests are listed with the Lab.
System dynamics
MILP / stochastic programming
Causal mapping / simulation
Disruption decision lab on a 3D globe: live IMF PortWatch chokepoint data, sea-graph rerouting, min-cost flow re-planning, time-to-survive versus time-to-recover, a Monte Carlo and a 32-option flexibility portfolio.
Supply-network resilience sandbox: hundreds of editable nodes, a min-cost-flow solver, N-1 contingency scans, Monte Carlo stress tests and adversarial worst-case search.
System-dynamics simulator of a packaged food and dairy supply chain: QA holds, shelf life, hiring and a distant ingredient supplier; decision lab, play mode and a three-level tutorial; English, Spanish and Danish.
Production and workforce model that splits post-step overshoot into refill, structure, policy and forecast, exactly.
Prices flexibility against a fair baseline over a binomial demand lattice: commit now, best fixed, wait and see, stage and expand, lease and break.
Multi-tier capacity planning: a time-phased requirements plan, exact tracing of load to markets, capacity to add, and planning within capacity as a linear program (HiGHS); a Network Studio and world map.
Management flight simulator of the mismatch between commercial, supply chain and network clockspeeds (early development).
Warehouse design from first principles: a parametric FreeCAD model and an analytical model share one layout (proved identical on 400 designs), with simulation, total cost of ownership, an optimiser, and IFC / DXF / glTF export.
A library of 17 network-design visualisations, from demand bars to O–D flow maps.
A five-stock system-dynamics model of the attack–defence loop in a ship’s cyber-physical ballast system: detection delay decides containment or failure. Paper (SSRN).
Companion tools for the book Engineering Flexibility in Supply Chain Design (repo).
Capacity under a months-on-hand stock policy and end-to-end lead time across a multi-tier network (Streamlit).
An agent-based model of material through a contract-manufacturing chain (Mesa, Streamlit).
Vensim models in public health, epidemiology and cyber-resilience.
The source of this site, including the Global Disruption Atlas and its tests.
Field notes → Anonymised and illustrative narratives of how this thinking applies. Lab → Engineering and software experiments.