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Temperature Measurement Techniques for RAON Cryomodule
Kim, Heetae,Jung, Yoochul,Jo, Yong Woo,Lee, Min Ki,Choi, Jong Wan,Kim, Youngkwon,Kim, Juwan,Paeng, Won-Gi,Kim, Moo Sang,Jung, Hoechun,Kwon, Young Kwan The Korean Vacuum Society 2018 Applied Science and Convergence Technology Vol.27 No.2
Conducting and semiconducting temperature sensors are calibrated and applied to cryomodules. The definition of temperature is introduced and the pressure in vacuum is shown as a function of temperature. The resistance of Drude model is shown as a function of carrier density and mean free path. Temperature sensors are calibrated with Physical Property Measurement System (PPMS). The temperature sensors are applied to measure temperature accurately in RAON cryomodules.
JuWan Kim,KyungYeol Bae,SungWan Kim,HeeJu Kang,IlSeon Shin,JinSang Yoon,JaeMin Kim 대한신경정신의학회 2016 PSYCHIATRY INVESTIGATION Vol.13 No.5
Major depressive disorder is often resistant to antidepressant treatment. Repetitive transcranial magnetic stimulation (rTMS) has been used in treatment-resistant depression (TRD). Known adverse events of rTMS include transient headache, local pain, syncope, seizure induction, and hypomania induction. This report outlines a patient with TRD who unexpectedly improved following a seizure during the course of rTMS, which has never been reported.
JuWan Kim,HeeJu Kang,KyungYeol Bae,SungWan Kim,HyunKyong Oh,MinGon Kim,JaeMin Kim 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.4
Severe physical injury is a leading cause of posttraumatic syndrome (PTS). This is to develop a biomarker-based diagnostic algorithm for posttraumatic syndrome (BioPTS) study. This is a 2-year longitudinal cohort study assessing patients who were hospitalized beginning in 2015 at Chonnam National University Hospital in Gwangju, Korea, after experiencing severe physical injuries. Baseline evaluations were made during the acute phase (within 1 month) of the physical injury and included extensive information on sociodemographic and clinical variables as well as a list of biomarkers. All participants will be followed up for 2 years, and the diagnostic and predictive validities of various biomarkers for PTS will be estimated. The BioPTS study will develop the most accurate models for the diagnosis and prediction of PTS, and will contribute to existing research regarding the complex relationships between severe physical injury and psychological issues.
( Juwan Kim ),( Seung-seob Kim ),( Ho Kyoung Hwang ),( Chang Moo Kang ),( Kyung Sik Kim ),( Ung Hyun Kim ) 한국정맥경장영양학회 2023 한국정맥경장영양학회지 Vol.15 No.3
Purpose: This study focuses on the need for standardized body composition measurements in the hepatobiliarypancreatic field. It evaluates and compares the effectiveness of bioelectrical impedance analysis (BIA) and computed tomography (CT) scans in assessing body composition of patients undergoing pancreatoduodenectomy (PD), aiming to establish correlations among different body composition indexes. Methods: Ninety-seven patients who underwent PD between August 2022 and March 2023, were enrolled in this study. Muscular and fatty parameters related to BIA and CT were assessed both preoperatively and on postoperative day 6. The correlation between each parameter related to muscle fat was analyzed according to the measurement modalities. Results: There was an increase of skeletal muscle area (SMA), total muscle area, and low attenuated muscle area after surgery. Skeletal muscle mass (SMM) measured using BIA exhibited a strong correlation with the SMA and normal attenuated muscle area (NAMA) measured using CT (r=0.86, P<0.001; r=0.76, P<0.001). The trunk muscle measured using BIA demonstrated moderate to strong correlations with SMA and NAMA measured using CT (r=0.84 P<0.001; r=0.73, P<0.001). Body fat measured using BIA and total fat area (TFA) measured using CT showed strong correlations (r=0.74, P<0.001). In the postoperative analysis, a similar trend was observed (SMM vs. SMA: r=0.80, P<0.001; SMM vs. NAMA: r=0.70, P<0.001), (trunk muscle vs. SMA: r=0.79, P<0.001; trunk muscle vs. NAMA: r=0.69, P<0.001), and (body fat vs. TFA: r=0.83, P<0.001). Conclusion: BIA, akin to CT, serves as a valuable tool for assessing body composition ratios in patients undergoing PD.
김주완(Juwan Kim),장인성(Insung Jang) 대한공간정보학회 2021 한국공간정보학회 학술대회 Vol.2021 No.11
스마트시티, 디지털트윈 등 실감형 3D 도시모델에 대한 수요가 증가하면서, UAV 기반 고품질 항공 영상에 대한 요구가 커지고 있다. 그러나, 도심지 영상에 포함된 건물 그림자는 영상 처리, 시뮬레이션 등의 활용 과정에서 장애 요소로 작용하고 있다. 본 연구는 UAV로 촬영한 도심지 항공 영상에 있는 그림자를 딥러닝으로 제거하여 화질을 개선하는 방법을 제안한다. 제안 방법은 개선된 이중 계층적 그림자 제거 인공신경망을 기반으로 다양한 실세계 환경에 강건한 그림자 제거 성능을 확보하기 위하여 물리적 조명 모델을 활용한 도메인 랜덤화 기법을 적용하였다. 공개된 학습 데이타를 이용하여 성능 평가를 실시하였으며, 실제 드론 촬영 영상에 적용하여 그림자 영역의 화질이 개선된 결과를 제시한다.
Temperature Measurement Techniques for RAON Cryomodule
Heetae Kim,Yoochul Jung,Yong Woo Jo,Min Ki Lee,Jong Wan Choi,Youngkwon Kim,Juwan Kim,Won-Gi Paeng,Moo Sang Kim,Hoechun Jung,Young Kwan Kwon 한국진공학회(ASCT) 2018 Applied Science and Convergence Technology Vol.27 No.2
Conducting and semiconducting temperature sensors are calibrated and applied to cryomodules. The definition of temperature is introduced and the pressure in vacuum is shown as a function of temperature. The resistance of Drude model is shown as a function of carrier density and mean free path. Temperature sensors are calibrated with Physical Property Measurement System (PPMS). The temperature sensors are applied to measure temperature accurately in RAON cryomodules.
Longitudinal Impact of Depression on Quality of Life in Stroke Patients
EunSong Kim,JuWan Kim,HeeJu Kang,KyungYeol Bae,SungWan Kim,JoonTae Kim,ManSeok Park,KiHyun Cho,JaeMin Kim 대한신경정신의학회 2018 PSYCHIATRY INVESTIGATION Vol.15 No.2
Objective-Stroke is associated with significant long-term morbidity and poor quality of life (QOL). Depression is one of the most common complications after stroke and has been associated with QOL cross-sectionally. We investigated the longitudinal impact of depression in the acute phase of stroke on QOL 1 year after stroke. Methods-In total, 423 patients were evaluated 2 weeks after stroke, and 288 (68%) were followed 1 year later. QOL was assessed using the World Health Organization Quality of Life-Abbreviated form (WHOQOL-BREF) at baseline and follow-up. Depression was diagnosed according to Diagnostic and Statistical Manual of Mental Disorders-IV criteria; demographic and clinical characteristics data, including stroke severity, were obtained at baseline. The longitudinal associations of post-stroke depression (PSD) at baseline with QOL across two evaluation points were assessed using a repeated-measures analysis of variance. Results-The WHOQOL-BREF scores were significantly and persistently lower 1 year after stroke in patients with PSD at baseline compared with those without PSD at baseline independent of demographic and clinical characteristics, including stroke severity. Conclusion-PSD in the acute phase of stroke is an independent predictor of QOL in both the acute and chronic phases of stroke. Our findings underscore the importance of evaluating depression in the acute phase of stroke.