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김소명(So-Myung Kim),주진형(Jin Hyeong Jhoo),변기환(Gihwan Byeon),정승민(Seungmin Jeong),김연미(Yeon Mi Kim),이강욱(KangUk Lee) 대한신경정신의학회 2021 신경정신의학 Vol.60 No.4
Objectives To assess the satisfaction of dementia patients with telemedicine services. Underlying factors were extracted from a satisfaction dataset, and possible associations among factors were investigated to determine their statistical relevances. Methods A survey was conducted using a questionnaire to determine satisfaction with telemedicine services of patients with dementia in 9 public health centers and 5 designated hospitals in 8 provinces in Gangwon-do from 20 July 2020 to 31 October 2020. Four hundred and ninety-seven users responded to the survey. Factor analysis was performed on survey data and multiple linear regression was used to extract relevant factors. Results The percentage of subjects satisfied with telemedicine services was 78.8%. Thirty-five items of the satisfaction survey indicated that the five factors, that is, necessity (Cronbach’s α 0.952), satisfaction (Cronbach’s α 0.929), medical system reliability (Cronbach’s α 0.924), medical staff reliability (Cronbach’s α 0.924), and geographic vulnerability (Cronbach’s α 0.922), were related to satisfaction with telemedicine services, and that of these, geographic vulnerability was most associated with the need for telemedicine services. Conclusion This study shows that dementia patients with experience of telemedicine services were generally satisfied with treatment. Despite its limitations, the satisfaction survey was found to provide a reliable and valid scale for assessing user satisfaction.
JungSun Lee,JunSoo Kwon,Daeho Kim,SungWan Kim,JaeJin Kim,JongHoon Kim,HeeJung Nam,Seunghyong Ryu,IlHo Park,SukKyoon An,HongSeok Oh,Seunghee Won,Kanguk Lee,KyuYoung Lee,SeungHwan Lee,YuSang Lee,JungSeo 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.1
Objective-We designed a nationwide study with limited exclusion criteria to investigate the prevalence of metabolic syndrome (MetS) in Korea and its relationship with antipsychotic medications. Methods-This multicenter, cross-sectional, and observational study included patients diagnosed with schizophrenia or schizoaffective disorder. Sixteen hospitals enrolled 845 patients aged 18 to 65 years prescribed any antipsychotic medication between August 2011 and August 2013. MetS was diagnosed using the criteria of the modified Adult Treatment Panel III of the National Cholesterol Education Program with the Korean abdominal obesity definition (waist circumference ≥85 cm in women, ≥90 cm in men). Results-The prevalence of MetS in all patients was 36.5% and was significantly higher in men than women (men, 40.8%; women, 32.2%) and was significantly correlated with age [odds ratio (OR) 1.02] and duration of illness (OR 1.03). The prevalence of MetS across antipsychotic drugs in the major monotherapy group was as follows: 18.8% for quetiapine, 22.0% for aripiprazole, 33.3% for both amisulpride and paliperidone, 34.0% for olanzapine, 35% for risperidone, 39.4% for haloperidol, and 44.7% for clozapine. Conclusion-The prevalence of MetS is very high in patients with schizophrenia or schizoaffective disorder. Screening and monitoring of MetS is also strongly recommended.
하향링크 다중 안테나 시스템의 계층적 정보 접근성에 관한 연구
이강욱(Kanguk Lee),최진석(Jinseok Choi),김동구(DongKu Kim),박정훈(Jeonghun Park) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
본 논문은 Downlink MIMO 시스템에서 일반화한 물리계층보안 구조인 계층적 정보 접근성 (HIA : Hierarchical Information Accessibility) 모델을 고려한다. HIA 모델에서 각 사용자는 정보 접근에 대한 우선순위가 다른 여러 계층에 할당되며, 여기서 더 높은 우선순위 계층에 할당된 유저는 더 낮은 순위 계층으로 보내지는 정보를 해독할 수 있고, 반대의 경우는 불가능하다. 고려된 시스템에서 도청자가 정보 탈취를 위해 서로 도움을 주는 여부에 따라 두 가지 케이스로 나누어진다. 우리는 각 케이스의 secrecy rate 합을 최대화하기 위해 최적화 문제를 프리코더에 대한 함수로 수식화하였고, 문제의 non-smoothness 해결을 위해 LogSumExp 기술을 사용하여 근사하고, Rayleigh 몫의 형태로 재해석하였다. 본 논문은 최적점을 찾기 위해 first-order KKT 조건을 만족하는 새로운 알고리즘을 제안하고, 기존의 방식보다 더 좋은 성능을 보임을 밝혔다.