Complex system characteristics
a system w/:
1. large networks of components
2. simple rules of operation
3. no central control
Complex systems display...
1. complex collective behaviour
2. sophisticated information processing
3. adaptation via learning or evolution
study of complex systems
Resilience in a complex system...
protects its sub-systems from disturbances
"the adaptive cycle"
a very simple model that broadly describes the nested and constantly changing nature of complex systems
Adaptive cycle phases
1. Rapid growth (r)
2. Conservation (K)
3. Release/Disturbance (Ω)
4. Reorganization (α)
Rapid growth (r)
- Social, economic or environmental resources are abundantly available and facilitate rapid growth.
- This phase tends to be fast.
- Resources are no longer plentiful, slowing growth.
- This phase is slow with little capacity to change, making the system less flexible and vulnerable to collapse.
- A disturbance causes the system to collapse.
- This is a quick, chaotic phase.
- Also a quick phase, the system may reorganize into a different structure after the collapse.
- New entities may be formed and innovation achieved.
Qualities of resilient systems
- Withstand, respond to, and adapt better to shocks/stresses
- Emerge stronger after tough times
- Live better in good times
The City Resilience Framework
1. Health & Wellbeing
2. Economy & Society
3. Infrastructure & Environment
4. Leadership & Strategy
Health & Wellbeing drivers
1. Meet basic needs
2. Ensures public health services
3. Supports livelihoods and employment
Economy and Society drivers
1. Foster economic prosperity
2. Ensure social stability, security, and justice
3. Promote cohesive and engaged communities
Leadership & strategy drivers
1. Promote leadership & effective management
2. Empower a broad range of stakeholders
3. Foster long-term and integrated planning
Infrastructure and Environment drivers
1. Provide and enhances protective natural and human-made assets
2. Ensure continuity of critical services
3. Provide reliable communication & mobility
Rotterdam's Climate Change Adaptation Stategy
1. Flood management
2. Accessibility for ships and passengers
3. Adaptive buildings
4. Urban water systems
5. Quality of life within the city
Floating pavilion, water square, green roofs, museum park garage, roof park
"The Quadruple Squeeze"
1. Land system change
2. Atmospheric aerosol loading
3. Freshwater use
4. Biogeochemical loading
5. Biodiversity loss
6. Ozone depletion
7. Ocean acidification
8. Climate change
9. Chemical pollution
Turning crisis into opportunity examples
Latin america's agriculture
Australia's great barrier reef
Sweden's urban landscapes