Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Hee Jun Kim"'
Autor:
Hee Jun Kim, Sung Young Oh, Hyerim Ha, Hee Yeon Lee, Jin Hyoung Kang, Seung Jin Bae, Donghwan Lee, Green Bae, Dong Hoe Koo, Do Yeun Kim, Juhee Han, Jong Hwan Lee, Hye Sook Han
Publikováno v:
International Journal of Environmental Research and Public Health
Volume 18
Issue 6
International Journal of Environmental Research and Public Health, Vol 18, Iss 3139, p 3139 (2021)
Volume 18
Issue 6
International Journal of Environmental Research and Public Health, Vol 18, Iss 3139, p 3139 (2021)
This study sought to adapt the existing value framework (VF) to produce a reliable and valid Korean oncology VF. Two VFs developed by The American Society of Clinical Oncology (ASCO) and the European Society for Medical Oncology (ESMO) were selected
Autor:
Hee-Jun Kim, Seong-Hyoen Park
Publikováno v:
The Journal of the Korea Contents Association. 16:76-87
Publikováno v:
Journal of Electrical Engineering and Technology. 10:2334-2342
This paper proposes an LED driving circuit with a digital controller, power factor correct (PFC) function, and low light flicker. The key topology of the proposed circuit is a conventional Flyback combined with a pre-stage. As a result, there will be
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 64:1977-1986
The gallium nitride transistors suffer from current collapse effect in operation regions, which leads the dynamic ON-resistance to increase when high voltage is applied to the transistor. Dynamic ON-resistance under practical application conditions i
Publikováno v:
Journal of the Korean Physical Society. 65:239-242
A new single-stage power factor correction (PFC) circuit for driving a light-emitting diode (LED) is proposed in this paper. This circuit makes it possible to have a low output ripple due to the energy storage capacitor on the primary side. The propo
Autor:
Hee Jun Kim
Publikováno v:
Journal of Korea Design Forum. :303-312
Publikováno v:
IEEE Transactions on Magnetics. 45:1780-1783
This paper presents a method on a multiobjective optimal design of interior permanent magnet synchronous motor (IPMSM) with V-shaped permanent magnet rotor for high performance. In general, a design method adopting equivalent magnetic circuit is used
Autor:
Hee-Jun Kim, Baek-Haeng Lee
Publikováno v:
Journal of Electrical Engineering and Technology. 2:373-378
Soft switching was applied to the multi-level inverter to enhance the performance of the high-intensity discharge (HID) ballast used in vehicle headlights. The electrical properties were investigated and the available modeling of ballast in steady st
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 54:1869-1878
This paper presents three pulsewidth modulation modulators using CMOS operational transconductance amplifiers. They consist of a ramp integrator and current-tunable Schmitt triggers. Prototype circuits built using discrete components exhibited that t
Publikováno v:
IEEE Transactions on Industrial Electronics. 54:330-337
This paper presents a new switching strategy for pulse width modulation (PWM) power converters. Since the proposed strategy uses independent on/off switching action of the upper or lower arm according to the polarity of the current, the dead time is