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신준호,김군수,박요섭,나백주,손석준,김병우,Shin, Jun-Ho,Kim, Gun-Su,Park, Yo-Sub,Na, Bek-Ju,Sohn, Seok-Joon,Kim, Byong-Woo 대한예방의학회 1995 Journal of Preventive Medicine and Public Health Vol.28 No.3
In order to investigate the prevalence and the factors related to the depression and burnout among private practice physicians, a SDS(self-rating depression scale) and MBI(Maslach burnout inventory) -based questionnaire study was performed on 344 private practice physicians in Kwangju and Chonnam area. The results were summarized as follows. 1. Mean SDS score was 38.3 in total subjects and the prevalence rate of depression was 48.8%. As for the frequency order of the items of the SDS, decreased libido, diurnal variation and hopelessness were relatively high, and suicidal rumination, constipation and agitation were noted low. 2. Noticeable factors related with depression were smoking, coffee use, sleeping time and satisfaction with income. 3. As a result a factor analysis with the MBI data, five factors named as emotional exhaustion, depersonalization, personal accomplishment, involvement and self-interest were extracted. Statistical analysis of the data demonstrated that 48.8% of the physician sample reported high scores on emotional exhaustion, and 45.3% scored high on depersonalization. Personal accomplishment scores remained high with 45.3% reporting high personal accomplishment. 4. Variables related to the burnout were age, sleeping time, family size religion, medical speciality, duration of practice setting, visiting patient number, closing day per month and job satisfaction. 5. In the relationship with depression, burnout was closely related to depression. Above results showed that the high percentage of private practice physicians experiencing depression and burnout suggests the need for further research to establish trends, to identify causal factors, and to develop avenues to reduce stress.
신준호(Joon-Ho Shin),명승일(Seung-Il Myong),장은영(Eun-young Chang),박형래(Hyung-Rae Park) 한국통신학회 2012 韓國通信學會論文誌 Vol.37 No.2A
본 논문에서는 대역 확산 (spread spectrum) 방식의 실시간 위치 추적 시스템 (RTLS: real-time locating system)을 위한 초 분해능 지연 시간 추정 (super-resolution time delay estimation) 알고리즘을 개발하고 다중경로 환경에서 성능을 분석한다. 기존의 코릴레이션 방식은 주변에 장애물이 없는 line-of-sight (LOS) 환경에서는 비교적 정확한 지연 시간 추정이 가능하나 지연 시간의 차이가 한 칩 이내인 근접 다중 경로 환경에서는 성능이 급격히 저하되는 문제점이 있다. 따라서 본 논문에서는 도래각 추정에 이용되는 MUSIC 알고리즘을 이용하여 근접 다중 경로 환경에서도 신호의 지연 시간을 추정할 수 있는 초 분해능 지연 시간 추정 알고리즘을 개발하고 이를 ISO/IEC 24730-2.1 RTLS 시스템에 적용하여 성능을 분석한다. In this paper a super-resolution time delay estimation algorithm is developed for real-time locating systems (RTLSs) that employ a direct-sequence spread spectrum technique, along with its performance analysis in multipath environments. The classical correlation method provides relatively good performance in line-of-sight (LOS) environments but its performance seriously degrades in multipath environments, especially when signals are spaced closer than a PN chip. Therefore we shall develop a super-resolution time delay estimation algorithm that may estimate the time delays of multipath signals even in closely spaced multipath environments using the MUSIC algorithm for direction-of-arrival estimation and analyze its performance by applying the algorithm to the ISO/IEC 24730-2.1 RTLS system.
신준호(Joon Ho Shin),김성우(Kim Sung Wu),이규훈(Kyu Hoon Lee),박시복(Si Bog Park) 대한임상노인의학회 2003 대한임상노인의학회지 Vol.4 No.4
Hereditary spastic paraparesis (HSP), or Strumpell-Lorrain syndrome, is a heterogenous group of hereditary neurodegenerative disorder of the central nervous system in which the primary clinical manifestation is a slowly progressive bilateral, spastic paraparesis. This paper is reporting a case of pure hereditary spastic paraparesis, which is the onset were 26 years ago. Physical examination revealed normoactive deep tendon reflexs in all four extremities with extensor plantar reflex and equinus. Electrodiagnostic study revealed no electrophysiological abnormality. The mode of inheritance of were autosomal dominant and were consistant those of type I of Harding's classification.