Symposium-5 New Development of Nonlinear and Complexity Theories and Practices November 23, 4:00 PM – 5:30 PM, Central Time Start Session Ranses Rogriguez, S. Roy Choudhury, Periodic, Quasiperiodic, and Blow-up Regimes in a nonlinear Mathieu equation with distributed delayTeng Wang, Guorong Wang, Liming Dai, Motion Mechanism Study on the Valve Disc of an Ultra-High Pressure Reciprocating PumpXiaoqiang Guo, Jun Liu, 3D Nonlinear Flow-Induced Vibration Model of Tubing String in High-Pressure, High-Temperature and High-Yield Gas WellsYongchen Fan, Ying Wu, Decreased balance between segregation and integration in elderly brain functional network