Conceptual article. Not a report of an empirical study.
Threat → Response → Adaptation → Preservation of Function → Recovery → Development.
0. Define the system
Set the boundaries, critical function and minimum acceptable level of that function. Identify resources and dependencies: who and what the system relies on to operate.
1. Threat
Describe the source, intensity, duration and scale of the threat. Assess probability where there is a basis for doing so, and make uncertainty explicit.
2. Response
Record the immediate response, activated resources, losses, overload and bottlenecks. Separate observations from assumptions about their causes.
3. Adaptation
Consider changes to behavior, operating mode, structure, rules, resource allocation, technology and infrastructure. State the intended effect and possible adverse consequences of each change.
4. Preservation of Function
Does the system continue to perform its critical function? For whom, at what level, for how long, at what cost and using which reserves? Identify functions that have been lost or degraded.
5. Recovery
Assess the return of function, restoration of resources and reserves, accumulated damage and deferred losses. Examine readiness for repeated load, rather than only an outward return to normal.
6. Development
Record lessons learned and structural improvements: reduced vulnerability, increased reserves, new capabilities and better preparation for future threats.
Limits of the framework
UDAF is an interdisciplinary analytical framework and does not replace domain-specific scientific, medical, engineering, military, economic, legal or social-science methods.
The sequence does not establish causation or guarantee success. Stages can overlap. Testing requires domain evidence, explicit criteria for function and consideration of alternative explanations.