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이근무,정승환,이정한,정순호,최영균,김영재,신치만,박주열,이영민 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Malignant hyperthermia is the disorder of calcium regulation within skeletal muscle associated predominantly with anesthesia. It is triggered by volatile anesthetics and depolarizing neuromuscular blocking agents. We experienced a case of malignant hyperthermia. 50 years old female patient was transferred to our emergency room that she was developed tachyarrhythmia and high fever. She was taken arthroscopic examination under the general anesthesia with enflurane and succinylcholine. We suspected malignant hyperthermia and promptly treated her with dantrolene sodium. She was developed disseminated intravascular coagulopathy and acute renal failure then we were intensive care to her. She was discharged without sequela. We experienced successful management of malignant hyperthermia.
Jeong Hoan Park,Shinyong Shim,Joonsoo Jeong,Sung June Kim 대한전자공학회 2017 Journal of semiconductor technology and science Vol.17 No.1
We propose a novel multi-photodiode array (MPDA) based retinal implant IC with on/off stimulation strategy for a visual prosthesis with improved spatial resolution. An active pixel sensor combined with a comparator enables generation of biphasic current pulses when light intensity meets a threshold condition. The threshold is tuned by changing the discharging time of the active pixel sensor for various light intensity environments. A prototype of the 30-channel retinal implant IC was fabricated with a unit pixel area of 0.021㎟, and the stimulus level up to 354 μA was measured with the threshold ranging from 400 lx to 13120 lx.
Park, Jeong Hoan,Shim, Shinyong,Jeong, Joonsoo,Kim, Sung June The Institute of Electronics and Information Engin 2017 Journal of semiconductor technology and science Vol.17 No.1
We propose a novel multi-photodiode array (MPDA) based retinal implant IC with on/off stimulation strategy for a visual prosthesis with improved spatial resolution. An active pixel sensor combined with a comparator enables generation of biphasic current pulses when light intensity meets a threshold condition. The threshold is tuned by changing the discharging time of the active pixel sensor for various light intensity environments. A prototype of the 30-channel retinal implant IC was fabricated with a unit pixel area of $0.021mm^2$, and the stimulus level up to $354{\mu}A$ was measured with the threshold ranging from 400 lx to 13120 lx.
영동 난계 국악축제 연구 : A Longitudinal Study
정강환,노용호,박미경 민족음악학회 2004 음악과 민족 Vol.28 No.-
The main aims of this article were to investigate the possibility of international cultural tourism product and tourists satisfaction based on geographical factors( local, domestic and foreign tourists). This is the longitudinal study on the cultural festival which used Korean traditional music as the main resource. It was founded as follows: Firstly, the satisfaction of foreign tourists was higher than residents and domestic tourists. So this festival has much potential which attracts many foreign tourists as a cultural product. Secondly, visitors the most satisfied about festival organization(5.25) and pamphlet distribution(4.48)and information system(4.39). But parking facility was the most negatively evaluated(3.25) and then convenient facility(3.51) was next in 1999. Visitors in 2000 satisfied more about festival organization(4.93) and pamphlet distribution(4.50). But they unsatisfied about parking facility(3.02), food price(3.35) and convenient facility(3.36). There should be improvement on parking facility, convenient facility, etc for customer-oriented festival. Thirdly, foreign visitors more satisfied about festival program than local and domestic visitors in 1999 and 2000 year festival. This showed the possibility of international festival of this Korean traditional music. They more satisfied about festival organization, information system, food price and facility, and food price. Residents' and domestic visitors' evaluation about food price was increased than year 1999 and 2000 festival. Foreigners' evaluation about food price, food booth facility and service was decreased than 1999 and 2000. There should be program development for foreigners. Based on 2003 festival results, it is recommended to have separated music instrument rooms. There should be better exhibitions and experiences facilities for good images. For foreigners, guides who have knowledge about traditional music instruments are necessary.
Drude Model for the Optical Properties of a Nano-Scale Thin Metal Film Revisted
Jeong Su Yang,이승걸,Se-Geun Park,이일항,Beom-Hoan O 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.6
This study proposes a modified Drude model to understand the anomalous behavior near the visible spectrum region. The proposed model contains the novel elastic collision parameter 0 in a dielectric function in the description of the boundary scattering of free electrons and electronelectron interactions within metallic nano-sized quasi-clusters in which the damping constant of the conventional Drude model is not exaggerated. The proposed model also provides impressive data fits for the dielectric function measured by Johnson and Christy. This study proposes a modified Drude model to understand the anomalous behavior near the visible spectrum region. The proposed model contains the novel elastic collision parameter 0 in a dielectric function in the description of the boundary scattering of free electrons and electronelectron interactions within metallic nano-sized quasi-clusters in which the damping constant of the conventional Drude model is not exaggerated. The proposed model also provides impressive data fits for the dielectric function measured by Johnson and Christy.