Complex Systems Through a Complexity Science Lens Complicated System: Large number of highly connected components. Rules of interaction between the components may change over time and not be well-understood. Connectivity of the components may be quite plastic and roles may be fluid.Interactions are not obvious. System responds to external conditions and evolves. Display organization without a central organizing principle(self- organization/emergence). Respond to and interact with their environment. Inadequate information about the state of the influencing variables. ·Nonlinearities. Tend to create surprise with their behavior. The overall behavior cannot be described simply in terms of their building blocks.The whole is much more than the sum of its parts. System Engineering by J.J.Gao CLGO 11
+ Complex Systems Through a Complexity Science Lens - Through a Complexity Science Lens Complicated System: • Large number of highly connected components. • Rules of interaction between the components may change over time and not be well time and not be well- understood understood. • Connectivity of the components may be quite plastic and roles may be fluid. Interactions are not obvious. • System respond ld dl ds to external conditions and evolves. • Display organization without a central organizing principle (selforganization/emergence). • Respond to and interact with their environment. • Inadequate information about the state of the influencing variables. • Nonlinearities. • Tend to create surprise with their behavior. • The overall behavior cannot be described simply in terms of their building blocks The whole is much more than the sum of its parts System Engineering by J. J. Gao 11 building blocks. The whole is much more than the sum of its parts
Example of Complex Systems System Inputs Process Output Weather satellite Terminal air traffic control Airline reservation system Clinical information system System Engineering by J.J.Gao CLGO 12
+ Example of Complex Systems - Example of Complex Systems System Inputs Process Output W h lli Weather satellite Terminal air traffic control Airline reservation system Clinical information system System Engineering by J. J. Gao 12
Example of Complex System TABLE 1-2 Examples of Engineered Complex Systems:Material and Energy Systems System Inputs Process Outputs Passenger aircraft Passengers Combustion Transported Fuel Thrust Lift passengers Modern harvester Grain field Cutting Harvested grain combine Fuel Threshing Oil refinery Crude oil Cracking Gasoline Catalysts Separation Oil products Energy Blending Chemicals Auto assembly Auto parts Manipulation Assembled auto plant Energy Joining,Finishing Electric power Fuel Power generation, Electric AC power plant Air regulation System Engineering by J.J.Gao CLGO 13
+ - Example of Complex System Example of Complex System System Engineering by J. J. Gao 13
Large-Scale Complex Engineered Systems Can you give a example of complex engineered systems? System Engineering by J.J.Gao CLGO 14
+ Large- Scale Complex Engineered Systems - Scale Complex Engineered Systems Can yg p ouive a example of complex engineered systems? System Engineering by J. J. Gao 14
Today's Agenda What is System Engineering(SE)? Value of System Engineering History of the System Engineering ■Life-Cycle Stages Career of System Engineer ■The INCOSE Process System Engineering by J.J.Gao 15
+ Today’s Agenda - s Agenda What is Sy g g( ) stem Engineering(SE)? Value of System Engineering Hi f h S E i i History of the System Engineering Life-Cycle Stages Cycle Stages Career of System Engineer The INCOSE Process 15 System Engineering by J. J. Gao