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Sangcheol Cho,Duk-Woo Park,Seung-Jung Park 대한심장학회 2019 Korean Circulation Journal Vol.49 No.5
Severe stenosis of the left main coronary artery (LMCA) generally occurs as a result of atherosclerosis and compromises the blood supply to a wide area of myocardium, thereby increasing the risk of serious adverse cardiac events. Current revascularization strategies for patients with significant LMCA disease include coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI), both of which have a range of advantages and disadvantages. In general, PCI is associated with a lower rate of periprocedural adverse events and provides more rapid recovery, while CABG provides more durable revascularization. Most clinical trials comparing PCI and CABG for the treatment of LMCA disease have shown PCI to be non-inferior to CABG with respect to mortality and the serious composite outcome of death, myocardial infarction, or stroke in patients with low-to-intermediate anatomical complexities. Remarkable advancements in PCI standards, including safer and more effective stents, adjunctive intravascular imaging or physiologic evaluation, and antithrombotic treatment, may have contributed to these favorable results. This review provides an update on the current management of LMCA disease with an emphasis on clinical data and academic and clinical knowledge that supports the use of PCI in an increasing proportion of patients with LMCA disease.
박상철(Sangcheol Park),한재영(Jaeyeong Han),이종경(Jonggyeong Lee),김성수(Sung-Soo Kim),유상석(Sangseok Yu),최장영(Jangyoung Choi),차한주(Hanju Choe) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
A virtual chassis platform for fuel cell hybrid electric vehicles has been developed. The virtual chassis platform has been constructed using mathematical formulation with forward simulation method. Using the mathematical model, it is easy to change components or controllers for dynamic simulation. Control strategies which consider energy efficiency of the fuel cell are composed for the virtual chassis platform. The control strategies have been verified by fuel consumption from the driving simulation result with a UDDS velocity profile.
전기구동 그린카 시뮬레이션을 위한 견인 모터 및 제어기 모델 개발
박상철(Sangcheol Park),임용래(Yongrae Im),최장영(Jangyoung Choi),김성수(Sung-Soo Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Recently, due to the resources and environment problem, the green energy vehicles have been developed. The motor and its controller are most important parts. In this paper, the mathematical model of the interior permanent magnet synchronous motor and its controller has been developed for the simulation based design of the green energy vehicles. The dynamics parameters of the model can be easily changed during the simulation. The developed model has been compared and verified with the commercial program named Autonomie.
박상철(Sangcheol Park),윤홍선(Hongseon Yun),한재영(Jaeyeong Han),이종경(Jonggyeong Lee),김성수(Sung-Soo Kim),최장영(Jangyoung Choi),유상석(Sangseok Yu),차한주(Hanju Choe) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
We developed fuel cell virtual vehicle platform which can be used for various simulations, to help FC vehicle development. The developed FC virtual vehicle platform consists of FC system module, motor powertrain module, drive module, longitudinal vehicle dynamics module. The modules can be easily replaced of by other types of modules to construct various FC models. To verify this capability, the simulation of FC virtual vehicle platform has been carried out.