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한영훈(Young-Hun Han),이해영(Hae-Young Lee),최진영(Jin-Young Choi) 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.1B
하이브리드 시스템은 연속적인 행위와 이산적인 행위가 긴밀하게 통합되어 있는 시스템이다. 하이브리드 시스템을 모델링 하기 위해서 본 논문에서는 확장한 CHARON을 사용한다. 확장한 CHARON은 기존의 CHARON에서 변수의 도식적 표기법, 모드의 도식적 표기법, 통신 방식 변경(Renaming 방식 제거), 통신과 계층 간 연계의 분리, 긴급 전이 추가, 신호 변수를 추가하였다. 또한 확장한 CHARON을 사용하여 전장을 모델링 하였다.
한영훈(Young-Hun Han),양상철(Sang-Cheol Yang),최진욱(Jin-Wook Choi),이강윤(Kang-Yoon Lee) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.11
In this paper, we propose a low-power 2.4-GHz Bluetooth receiver. It optimizes passive pregain with an inverter-based low-noise transconductance amplifier and its associated insertion loss, while enabling isolated in-phase(I)/quadrature(Q) passive mixing. The key feature of the proposed receiver front-end is using linearization technique of inductively degenerated CMOS. We design a 2.4GHz LNTA in a TSMC 0.18 μm CMOS process. The measured result show a noise figure of 2.99 dB, power consumption of 6.3 mW and IIP3 of -19.2 dBm, demonstrating that the designed RF transceiver can achieve low noise figure levels with good linearity.
정신과 거역 퇴원 환자들의 외래 추적 치료에 대한 순응도와 관련된 요인
한영훈(Young Hoon Han),이도윤(Do Yun Lee),손용표(Yong Pyo Son),박창증(Chang Jeung Park),이광헌(Kwang Hun Lee),사공정규(Jeong Kyu Sakong),곽경필(Kyung Phil Kwak) 대한사회정신의학회 2010 사회정신의학 Vol.15 No.1
연구목적: 이 연구는 정신과 입원 환자 중 거역 퇴원을 한 환자들을 대상으로 어떠한 요인이 퇴원 후 외래 추적 치료에 대한 순응도에 영향을 미치는가에 대해 알아보고자 하였다. 방 법: 2006년부터 2009년까지 4년 동안 동국대학교 경주병원 정신과에서 거역퇴원을 한 163명의 환자들의 진료기록부를 조사하여 퇴원 후 외래 추적 치료를 나온 군과 나오지 않은 군으로 나누고, 외래 추적 치료를 나온 군을 다시 6개월 이상 추적 치료가 지속되는 군과 지속 되지 않는 군으로 나누어 각 군에 영향을 미칠 수 있는 요인들을 비교분석하였다. 결 과: 거역퇴원 후 외래 추적 치료에 한 번도 나오지 않은 환자는 43명이었고 한번이라도 나온 환자는 120명이었다. 그 중 6개월 이전에 외래 추적 치료를 중단한 환자는 49명이었으며 6개월 이상 치료를 지속하는 환자는 71명이었다. 외래 추적 치료의 여부에 영향을 미치는 요인은 거역퇴원의 이유와 거역퇴원 당시의 환자의 상태, 입원 기간이었다. 환자가 환자의 병을 부정하거나 치료에 불만족하여 거역퇴원을 한 경우는 외래 추적 치료가 잘 되지 않았고, 퇴원 당시의 상태가 좋거나 입원 기간이 긴 경우에는 외래 추적이 잘 되었다. 이러한 요인들 가운데 6개월 이상 외래 추적 치료가 지속되는 것에 영향을 주는 요인은 입원 기간뿐 이었다. 이러한 요인 외에 진단명, 사회 인구학적 특성, 입원 경로, 입퇴원 요일, 주치의 성별 및 연차 등 어떤 것도 외래 추적 치료에 영향을 주지 못했다. 결 론: 거역퇴원 환자의 외래 추적 치료에 환자의 병에 대한 인식과 입원 기간이 큰 영향을 미친다는 것을 알 수 있었다. 실제 임상 에서 거역퇴원 환자라 하더라도 외래 추적 치료를 잘 받을 수 있도록 하는 치료진의 노력이 필요할 것이다. Objective:The purpose of this study is to research factors which affect Outpatient department(OPD) follow up and consistency in psychiatric inpatients discharged against medical advice from psychiatric hospitalization. Methods:The subjects in this study were 163 patients who were discharged against medical advice from Department of Neuropsychiatry at Dongguk University Hospital between January 1, 2006 and December 31, 2009. Patients were divided into two groups:patients who came for OPD follow up treatment and patients who did not. The group of patients who came for OPD follow up treatment was then subdivided into two groups:a group with patients who continuously came for OPD follow up treatment for more than 6 months and a group with patients who were lost be-fore 6 months. After classifying the patients, we compared and analyzed the factors which could influence each group. Results:After being discharged against medical advice, 43 patients did not show up for OPD follow up treatment at all and 120 patients came for OPD follow up treatment more than once. 49 patients were lost before 6 months and 71 patients continued to come for OPD follow up treatment for more than 6 months. Factors that affected OPD follow up treatment were the reasons for the patient’s discharge against medical advice, result of treatment and the duration of psychiatric hospitalization. When the reason for discharge against medical advice was complete denial of illness or dissatisfaction with staffs, patients were not well followed up at the OPD. On the other hand, when result of treatment was good at the time of discharge or when the duration of psychiatric hospitalization was long enough, patients were well followed up at the OPD. Among these factors, duration of psychiatric hospitalization was the only one that could affect the continuance of OPD follow up treatment for more than 6 months. Apart from these reasons, diagnosis, so-ciodemographic characteristics, mode of admission, day of admission, day of discharge and gender or grade of doctor did not influenced the OPD follow up treatment. Conclusion:Insight of their own psychiatric illness and the duration of psychiatric hospitalization affected OPD follow up treatment in patients who were discharged against medical advice. In clinical application, even if patients are discharged against medical advice, psychiatrist should make efforts to get those patients to receive OPD treatment.
조영석(Young Seuk Cho),권순일(Soon Ill Kwon),한영훈(Young Hun Han),김미화(Mi Hwa Kim),신혜정(Hye Jeoung Shin) 한국데이터정보과학회 1992 한국데이터정보과학회지 Vol.3 No.2
난수는 모의실험에서 매우 중요한 역할을 한다. 따라서 난수발생기가 올바른 난수를 발생시키기 위하여 지녀야 할 성질들로는 임의성, 장주기, 효율성, 반복성, 호환성, 일양성이 있다. 현재 많이 사용되고있거나, 최근에 소개된 난수발생기들인 GGUBS, Portable Pseudo-random Number Generator, Universal Random Number Generator에 대해 이 성질들을 비교해보았다. 포커검정, 런검정, kolmogorov-smirnov검정, 카이제곱검정을 사용하였으며, 여러 면을 종합해 본 결과 Universal Random Number Generator를 사용하는 것이 바람직하다.
유도결합 플라즈마 스퍼터링을 이용한 플라스틱 기판 상의 Al이 도핑된 ZnO 박막 증착
정승재(Seung-Jae Jung),한영훈(Young-Hun Han),이정중(Jung-Joong Lee) 한국표면공학회 2006 한국표면공학회지 Vol.39 No.3
Al-doped ZnO (AZO) films were deposited on the plastic substrate by inductively coupled plasma (ICP) assisted DC magnetron sputtering. The AZO films were produced by sputtering a metallic target (Zn/Al) in a mixture of argon and oxygen gases. AZO films with an electrical resistivity of ~10³ Ω㎝ and an optical transmittance of 80% were obtained even at a low deposition temperature. In-situ process control methods were used to obtain stable deposition conditions in the transition region without any hysteresis effect. The target voltage was controlled either at a constant DC power. It was found that the ratio of the zinc to oxygen emission intensity, I (O 777)/I (Zn 481) decreased with increasing the target voltage in the transition region. The Ar/O₂ plasma treatment improve the adhesion strength between the polycarbonate substrate and AZO films.
일 대학병원 정신과 외래를 방문한 우울증 환자에서의 하지불안증후군
이도윤(Do-Yun Lee),사공정규(Jeong-Kyu Sakong),곽경필(Kyung-Phil Kwak),한영훈(Young-Hoon Han),손용표(Yong-Pyo Son),박창증(Chang-Jeung Park),원승희(Seung-Hee Won),이광헌(Kwang-Hun Lee) 대한생물치료정신의학회 2011 생물치료정신의학 Vol.17 No.1
Objectives : This study was designed to investigate the clinical characteristics, relationship with antidepressants and incidence of restless legs syndrome(RLS) in depressed outpatients. Methods : Total 160 adult patients(male 32, female 128) of psychiatric outpatient were enrolled in this study. We use the diagnostic criteria of International RLS Study Group(IRLSSG) for RLS. Also WHO quality of life scale abbreviated version(WHOQOL-BREF), Hamilton Depression Rating Scale-17(HAM-D) and Pittsburgh Sleep Quality Index(PSQI) was used to investigate the relationship between RLS and depression severity, quality of life, sleep quality. Results : In 39(24.4%) out of the total 160 patients were diagnosed as having RLS. Among those 39 RLS patient, 19 patients(48.7%) was reported to have developed their RLS after starting depression treatment. The RLS group showed higher PSQI and HAM-D scores(p=0.02, p<0.01) and lower WHOQOL-BREF score(p=0.06) compared to those of non-RLS. Compared to those of non-RLS group, the bupropion group showed a significantly low rate of RLS group (p=0.043) and the venlafaxine group showed a significantly high rate of RLS group(p=0.018). HAM-D score 7 or more group caused RLS 4.5 times compared those of less than HAM-D score 7 group. Conclusion : In this study, depressed outpatients showed high incidence rate of RLS and RLS had influence on sleep quality, depression severity and quality of life. Moreover, certain antidepressants had potential to induce RLS. Therefore, these results suggest that appropriate treatment for depression is required to clinicians and development of RLS from depressed patients should be carefully monitored. Further research about the relationship between antidepressant and RLS is also necessary.
발광다이오드를 결합한 선박용 액정표시 장치 모니터의 기술 개발
이아름(A-Reum Lee),정효진(Hyo-Jin Jung),황선령(Sun-Ryoung Hwang),전헌수(Heon-Soo Jeon),이충현(Chung-Hyun Lee),홍상현(Sang-Hyun Hong),허인혜(In-Hye Heo),한영훈(Young-Hun Han),김은주(Eun-Joo Kim),양민(Min Yang),안형수(Hyung-Soo Ahn),송 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
To solve the problem that the LCD monitor dazzles person's eyes, we focused on LCD monitor development to realize stabile vision. The method to materialize low luminance is adding LED BLU on the side of the existing light guide plate combined CCFL BLU at the top and the bottom. The several experiments about this BLU produced results of increased light quantity, improved brightness uniformity under the dark condition, and reduced power consumption. These results show that it is cheaper than existing LED BLU and has the possibility to realize stabile vision.