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심박변이도를 이용한 중환자실 입원 환자의 자율신경계 일중변동성에 대한 예비연구
오주영,조동래,김종인,박재섭,허재석,김재진,라세희,신증수,이보름,박진영,Oh, Jooyoung,Cho, Dongrae,Kim, Jongin,Park, Jaesub,Heo, Jaeseok,Kim, Jae-Jin,Na, Se Hee,Shin, Cheung Soo,Lee, Boreom,Park, Jin Young 대한생물정신의학회 2017 생물정신의학 Vol.24 No.1
Objectives A normal circadian rhythm of autonomic nervous system function stands for the daily change of sympathetic and parasympathetic modulation, which can be measured by heart rate variability (HRV). Generally, patients in the intensive care unit (ICU) are prone to sleep-wake cycle dysregulation, therefore, it may have an influence on the circadian rhythm of autonomic nervous system. This study was designed to interpret possible dysregulation of autonomic nervous system in ICU patients by using HRV. Methods HRV was assessed every 3 hours in 21 ICU patients during a 7-minute period. The statistical differences of HRV features between the morning (AM 6 : 00-PM 12 : 00), and the afternoon (PM 12 : 00-PM 18 : 00) periods were evaluated in time domain and frequency domain. Results Patients showed significantly increased normalized power of low frequencey (nLF), absolute power of low frequencey (LF)/absolute power of high frequencey (HF) in the afternoon period as compared to the morning period. However, normalized power of high frequency (nHF) was significantly decreased in the afternoon period. There was no statistically significant difference between the morning period and the afternoon period in the time domain analysis. Conclusions The increased sympathetic tone in the afternoon period supports possible dysregulation in the circadian rhythm of autonomic nervous system in ICU patients. Future studies can help to interpret the association between autonomic dysregulation and negative outcomes of ICU patients.
직접 제어 방식을 이용한 지게차용 자동변속기의 클러치 유압시스템 모델링 및 해석
오주영(Jooyoung Oh),이근호(GeunHo Lee),김도식(DooSik Kim),이준혁(JunHyuk Lee),황광진(Kwangjin Hwang),이상호(SangHo Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Automatic transmission is consisted of geartrain, valve body, proportional control valve, electronic control unit and friction element that is consisted of clutch, brake, etc. Hydraulic control system effects directly shift quality which is important criterion estimated performance of automatic transmission. In this study, there is a purpose to enhance shift quality for forklift truck automatic transmission. The clutch hydraulic system using direct type control is modeled and analyzed. In this clutch hydraulic systeme, single cartridge type proportional valves are applied. Reduced torque method is suggested by duty ratio using PWM signal in clutch engagement pressure.
오주영(Oh Jooyoung) 한국아동청소년문학학회 2017 아동청소년문학연구 Vol.- No.20
This thesis closely analyzed 12 pathetic stories published in Eorini. This paper was intended to determine what inherent feature these texts had which spanned a wide range of genres from coverage materials to creative works. The first feature of the pathetic story is sorrowfulness. The sorrowfulness of the pathetic story derives from the character’s situation. The characters undergo the tragic incidents or are faced with the situation they cannot bear. These situations or incidents proceed in a painful direction and are finalized with tears. The second feature of the pathetic story is the reality. The pathetic story uses the device of the reality in the text for readers to feel as if the incident took place really. The narrator intervenes to emphasize the incident took place really and the place where the incident took place is described concretely as if that place is really somewhere or the name of the place is revealed clearly. This story also embodies the reality issue or social issue general people encounter in the daily life. The third feature of the pathetic story is the fictiveness. The pathetic story does not necessarily embody the things that took place actually. A lot of pathetic stories are the fictional creations and let readers think that story is a true story by means of the device of reality. Lots of writings published as the pathetic stories are included in the boy novel to be discussed because of this fictiveness. This study that determined the features of pathetic story will be a foundation of the work that analyzes the pathetic story in the period context in the future.