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Minsoo Ko(Minsoo Ko),Su-hyuk Chi(Su-hyuk Chi),Jong-ha Lee(Jong-ha Lee),Sang-il Suh(Sang-il Suh),Moon-Soo Lee(Moon-Soo Lee) 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.2
Objective: Cyber addiction, which is more vulnerable in adolescents, is defined as the excessive use of computers and the Internet that causes serious psychological, social, and physical problems. In this study, we investigated the resting-state functional connectivity (rsFC) in adolescents with cyber addiction. Methods: We collected and analyzed resting-state functional neuroimaging data of 20 patients with cyber addiction, aged 13−18 years, and 27 healthy controls. Based on previous studies, the seed regions included the dorsolateral prefrontal cortex, medial orbitofrontal cortex, lateral orbitofrontal cortex, dorsal anterior cingulate cortex, insula, hippocampus, amygdala, nucleus accumbens, and the ventral tegmental area. Seed-to-voxel analyses were performed to investigate the differences between patients and healthy controls. A correlation analysis between rsFC and cyber addiction severity was also performed. Results: Patients with cyber addiction showed the following characteristics: increased positive rsFC between the left insular−right middle temporal gyrus; increased positive rsFC between the right hippocampus−right precentral gyrus; increased positive rsFC between the right amygdala−right precentral gyrus and right parietal operculum cortex; increased negative rsFC between the left nucleus accumbens−right cerebellum crus II and right cerebellum VI. Conclusion: Adolescents with cyber addiction show altered functional connectivity during the resting state. The findings of this study may help us better understand the neuropathology of cyber addiction in adolescents.
MinSoo Byun,Dahyun Yi,JunHo Lee,YoungMin Choe,BoKyung Sohn,JunYoung Lee,HyoJung Choi,Hyewon Baek,YuKyeong Kim,YunSang Lee,ChulHo Sohn,Inhee MookJung,Murim Choi,YuJin Lee,DongWoo Lee,SeungHo Ryu,ShinGy 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.6
Objective-The Korean Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer’s disease (KBASE) aimed to recruit 650 individuals, aged from 20 to 90 years, to search for new biomarkers of Alzheimer’s disease (AD) and to investigate how multi-faceted lifetime experiences and bodily changes contribute to the brain changes or brain pathologies related to the AD process. Methods-All participants received comprehensive clinical and neuropsychological evaluations, multi-modal brain imaging, including magnetic resonance imaging, magnetic resonance angiography, [11C]Pittsburgh compound B-positron emission tomography (PET), and [18F]fluorodeoxyglucose-PET, blood and genetic marker analyses at baseline, and a subset of participants underwent actigraph monitoring and completed a sleep diary. Participants are to be followed annually with clinical and neuropsychological assessments, and biannually with the full KBASE assessment, including neuroimaging and laboratory tests. Results-As of March 2017, in total, 758 individuals had volunteered for this study. Among them, in total, 591 participants-291 cognitively normal (CN) old-aged individuals, 74 CN young- and middle-aged individuals, 139 individuals with mild cognitive impairment (MCI), and 87 individuals with AD dementia (ADD)-were enrolled at baseline, after excluding 162 individuals. A subset of participants (n=275) underwent actigraph monitoring. Conclusion-The KBASE cohort is a prospective, longitudinal cohort study that recruited participants with a wide age range and a wide distribution of cognitive status (CN, MCI, and ADD) and it has several strengths in its design and methodologies. Details of the recruitment, study methodology, and baseline sample characteristics are described in this paper.
A study of Disaster Survivors in Korea
MinSoo Lee,RheeHun Kang,ByungJoo Ham,YunKyeung Choi,ChangSu Han,HeonJeong Lee,SeungHwan Lee,SungMee Kim,HongSeock Lee 대한신경정신의학회 2004 PSYCHIATRY INVESTIGATION Vol.1 No.1
Objectives-The purpose of this study was to assess the clinical manifestation of psychiatric symptoms and Minnesota Multiphasic Personality Inventory (MMPI) profiles, and to examine the factors affecting the Degree of symptom severity, among survivors of a man-made disaster in Korea. Methods-Survivors of the Sampoong Department Store collapse were evaluated in October 1995, 5 months after the disaster occurred. Among the original 681 subjects, 624 were evaluated using the Psychiatric Evaluation Form, and the MMPI. Results-The primary complaint was sleep disturbance (54.2%), which was followed by headaches (31.8%) and intense distress over reminders of the event (24.2%). Most subjects (90.4%) showed a variety of psychiatric symptoms with certain factors further affecting the degree of severity. Another result showed that the severity of the subjects symptoms increased as their age increased and their educational level decreased. Divorced and widowed survivors had more severe symptoms, as did those who had experienced a loss of consciousness or who had waited a long time to be rescued. In the MMPI, the mean Welsh code profile configuration was 13726-0894/5: F-KL: and the most common two- and three- point code types were 1-3/3-1 (15.4%) and 1-3-7/1-7-3 (8.4%), respectively. Conclusions-The results indicate that it is possible to identify the specific psychiatric symptoms that resulted from this disaster, and that a substantial segment of the adult population exposed to similar events may experience symptoms of post traumatic stress. The psychiatric symptoms and the factors affecting the severity of the symptoms identified in this study may prove useful in the future screening of disaster victims for appropriate evaluation and treatment.
Overseas Review on the In-situ Demonstration of EBS for IN-DEBS Development
Minsoo Lee,Heui-Joo Choi,Jong-Youl Lee,Changsoo Lee,Jae-Owan Lee,Inyoung Kim 한국방사성폐기물학회 2014 방사성폐기물학회지 Vol.12 No.2
본 연구에서는 한국원자력연구원 부지 내 KURT 연구시설에 심지층 처분실증시험을 수행할 목적으로 사전 해외현황조사를실시하였다. 고준위폐기물 심지층 처분을 목적으로 지하연구시설을 구축한 나라들을 대상으로 현재 수행되었거나, 수행이진행 중인 공학적방벽 성능평가 시험들을 조사하였다. 주요 실증시험으로는, 스웨덴/프랑스 TBT, 스웨덴 LOT, 스위스 HEE,벨기에 PRACLAY, 스페인 FEBEX, 일본 HORONOBE, 및 캐나다 BCE 등이었다. 각 실증시험에 대하여 시험의 목적, 시험체의 구성, 시험조건, 세부 구성도, 측정 항목, 측정기기, 및 도출된 결과 등을 구체적으로 조사하였으며, 시험결과보다는 시험목적 및 시험물의 구축방법 파악에 더 집중하였다. 왜냐하면, 각국의 공학적방벽 성능시험방법의 검토를 통해 향후 KURT에서 추진하게 될 공학적방벽 실증시설의 설계에 도움을 얻고, 다양한 성능시험을 동시에 수행할 수 있도록 하기 위해서였다. 향후 KURT 확장을 통해 공학적방벽 성능시험 터널을 확보하고, 중규모의 성능 시험시연을 추진하게 될 예정이다. 본 기술검토를 통해 이 때 추진할 시험내역과 시험체의 구성 및 크기 등의 상세 설계에 필요한 기초적인 지식을 얻고자 하였다.
강민수(Minsoo Kang),이기열(Keeyoull Lee),이병정(Byungjeong Lee),홍의석(Euysuk Hong),이종석(Jongseok Lee),이숙희(Sukhee Lee),우치수(Chisu Wu) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅰ
소프트웨어 품질 향상과 생산성 향상이라는 측면에서 소프트웨어 재사용의 중요성이 널리 인식되어지고 그에 따른 재사용 컴포넌트에 대한 관심이 나날이 커져가고 있다. 이에 따라 재사용성을 측정하는 방법에 대한 연구의 중요성이 커지고 있다. 본 논문에서는 기존의 결합도를 측정하는 방법을 변형하여 두 클래스간의 의존 정도를 측정하고 클래스를 노드로, 측정한 의존 정도를 에지 값으로 하는 방향 그래프를 그린다. 그리고 그 그래프를 클러스터링을 하여 재사용 컴포넌트의 후보를 추출하는 방법을 제시한다.
Kim, Minsoo,Park, Geon-Hyoung,Lee, Jongyun,Lee, Jae Hyeong,Park, Jinho,Lee, Hyunwoo,Lee, Gil-Ho,Lee, Hu-Jong American Chemical Society 2017 NANO LETTERS Vol.17 No.10
<P>A layered two-dimensional superconducting material 2H-NbSe2 is used to build a van der Waals heterostructure, where a proximity-coupled superconducting order can be induced in the interfacing materials. Vertically stacked NbSe2-graphene-NbSe2 is fabricated using van der Waals interlayer coupling, producing defect-free contacts with a high interfacial transparency. The atomically thin graphene layer allows the formation of a highly coherent proximity Josephson coupling between the two NbSe2 flakes. The temperature dependence of the junction critical current (I-c) reveals short and ballistic Josephson coupling characteristics that agree with theoretical prediction. The strong Josephson coupling is confirmed by a large junction critical current density of 1.6 x 10(4) A/cm(2), multiple Andreev reflections in the subgap structure of the differential conductance, and a magnetic-field modulation of Ic. This is the first demonstration of strongly proximity-coupled Josephson junctions with extremely clean interfaces in a dry-transfer-stacked van der Waals heterostructure.</P>
Evaluation of Silicon Carbide (SiC) for Deep Borehole Disposal Canister
Minsoo LEE,Jongyoul LEE,Heuijoo CHOI,MalGoBalGaeBitNaLa YOO,Sunghoon JI 한국방사성폐기물학회 2018 방사성폐기물학회지 Vol.16 No.2
To overcome the low mechanical strength and corrosion behavior of a carbon steel canister at high temperature condition of a deep borehole, SiC ceramics were studied as an alternative material for the disposal canister. In this paper, a design concept for a SiC canister, along with an outer stainless steel container, was proposed, and its manufacturing feasibility was tested by fabricating several 1/3 scale canisters. The proposed canister can contain one PWR assembly. The outer container was also prepared for the string formation of SiC canisters. Thermal conductivity was measured for the SiC canister. The canister had a good thermal conductivity of above 70 W·m-1·K-1 at 100℃. The structural stability was checked under KURT environment, and it was found that the SiC ceramics did not exhibit any change for the 3 year corrosion test at 70℃. Therefore, it was concluded that SiC ceramics could be a good alternative to carbon steel in application to deep borehole disposal canisters.
ANALYZING DNA CHIP DATA FOR CLUSTERING AND CLASSIFYING GENES
Minsoo Lee,Hyejung Yoon,Kyong Oh Yoon,Hye Yeon Choi,Dae Hyun Kim,Keun il Lee,Dae Young Kim 한국멀티미디어학회 2007 한국멀티미디어학회 국제학술대회 Vol.2007 No.-
Data mining techniques have been applied on massive amounts of various types of data. Typically large amounts of business data were the target for finding new meaningful trends or patterns. As the new field of biotechnology is emerging, new types of biological data in massive amounts are becoming available. These new types of data include DNA chip data, which are produced by scanning DNA chip experiment results. The DNA chip data can be processed and provided in a form that makes it possible to perform data mining operations such as clustering and classification. Clustering is an important process used for grouping together similar entities. Although there are many clustering algorithms available, we suggest an algorithm based on the ant colony system. In addition, we have developed a classification algorithm based on the ant colony system. We tested the algorithm with a test data of 100 to 1000 genes and 24 samples and show promising results for applying these algorithms to clustering and classifying biological data.