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Full-Text Articles in Engineering
Computational Simulations Demonstrate Altered Wall Shear Stress In Aortic Coarctation Patients Previously Treated By Resection With End-To-End Anastomosis, John F. Ladisa, Ronak Jashwant Dholakia, Alberto Figueroa, Irene E. Vignon-Clementel, Frandics P. Chan, Margaret M. Samyn, Joseph Richard Cava, Charles A. Taylor, Jeffrey A. Feinstein
Computational Simulations Demonstrate Altered Wall Shear Stress In Aortic Coarctation Patients Previously Treated By Resection With End-To-End Anastomosis, John F. Ladisa, Ronak Jashwant Dholakia, Alberto Figueroa, Irene E. Vignon-Clementel, Frandics P. Chan, Margaret M. Samyn, Joseph Richard Cava, Charles A. Taylor, Jeffrey A. Feinstein
Biomedical Engineering Faculty Research and Publications
Background. Atherosclerotic plaque in the descending thoracic aorta (dAo) is related to altered wall shear stress (WSS) for normal patients. Resection with end-to-end anastomosis (RWEA) is the gold standard for coarctation of the aorta (CoA) repair, but may lead to altered WSS indices that contribute to morbidity.
Methods. Computational fluid dynamics (CFD) models were created from imaging and blood pressure data for control subjects and age- and gender-matched CoA patients treated by RWEA (four males, two females, 15 ± 8 years). CFD analysis incorporated downstream vascular resistance and compliance to generate blood flow velocity, time-averaged WSS (TAWSS), and oscillatory shear …
A Petri Net Simulation Model For Virtual Construction Of Earthmoving Operations, F. F. Cheng, Y. W. Wang, Yong Bai
A Petri Net Simulation Model For Virtual Construction Of Earthmoving Operations, F. F. Cheng, Y. W. Wang, Yong Bai
Civil and Environmental Engineering Faculty Research and Publications
A common and extended Petri net simulation framework for virtual construction of earthmoving operations is developed to simulate dynamic changes of workflow and information flow in the earthmoving construction process and illustrate the constraint relationship between various operational equipment and construction restrictions. The proposed framework considers factors that influence earthmoving operations including randomness of construction activities, individual preference of equipment scheduling, and constraint relationship between equipment and construction environment. With the given equipment availability and project indirect cost, the framework can predict construction situation, equipment utilization rate, estimated duration and cost to achieve visualized and intelligent scheduling of virtual construction …