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변기환,김란,한주현,고영미,노성원,이태경 대한신경정신의학회 2017 신경정신의학 Vol.56 No.1
Objectives The purpose of this study was to evaluate the psychometric properties of the Korean version of the Richmond Compulsive Buying Scale (RCB-K). Methods Participants (n=598) included patients recruited through an online panel survey. For the semantic adaptation step, the scale was translated into Korean and then back-translated to English by one psychologist, one public health professional, one psychiatrist who could speak both Korean and English, and one professional translator, without communication between those involved. A confirmatory factor analysis was performed to test whether the factor structure of the RCB-K was consistent with the English version. Convergent validity was assessed by correlating the RCB-K scores with those of other scales (i.e., O Guinn & Faber s Compulsive Buying Scale, Problem Gambling Inventory). Results The factor structure of the RCB-K was consistent with the two-factor structure established for the original RCB. Cronbach s α was high (0.906), indicating that the reliabilities of the items in each subscale were satisfactory. The RCB-K score was significantly correlated with those for the O Guinn & Faber s Compulsive Buying Scale (r=0.7) and the Problem Gambling Inventory (r=0.422). Conclusion The results of the present study indicate that the RCB-K is an effective and valid scale for evaluating the severity of compulsive buying. The findings suggest that the RCB-K is a promising assessment tool for use in the treatment and study of online compulsive buying behavior.
Reversible Dementia With Rapid Recovery to Normal Cognition: A Case Report
변기환,조현,장재원,주진형 대한노인정신의학회 2022 노인정신의학 Vol.26 No.1
We report the case of a 54-year-old female who was diagnosed with clinical dementia and recovered to normal cognition in only 11 days through appropriate intervention. The patient was on a complicated regimen of psychiatric medications for underlying depression and panic disorder. The patient noted increased deterioration in executive function gradual memory impairment starting in early 2020. As a result of the neuroimaging, prominent neurodegeneration and in vivo brain pathology were not observed. During outpatient clinic follow-up, severe obstructive sleep apnea (OSA) was confirmed. Based on the diagnostic results, a clinical impression was made for reversible dementia due to psychiatric drugs and OSA. During hospitalization for 10 days, the patient’s regimen of psychiatric medications with anticholinergic effects was changed, and long-acting benzodiazepines were reduced. The patient also underwent continuous positive airway pressure titration to ameliorate OSA. The patient reported subjective cognitive improvement and a comprehensive neuropsychiatric test performed at discharge later showed a normal range in all cognitive domains, and the patient's activity of daily living evaluated at the outpatient clinic after discharge had recovered.
Electroconvulsive Treatment in Dementia With Lewy Bodies: A Case Report
변기환,한소중,김태희,주진형 대한노인정신의학회 2022 노인정신의학 Vol.26 No.1
We report the case of a 78-year-old female patient with dementia with Lewy bodies accompanying severe psychotic and parkinsonian symptoms. The patient's symptoms did not improved with various antipsychotics, and cardiac and pulmonary side effects prevented adequate doses of the drugs from being administered. As an alternative approach, we performed electroconvulsive therapy, which can be conducted relatively safely in elderly patients with underlying medical conditions. The patient received 10 sessions of electroconvulsive therapy across a 4-week period. Remarkable improvements in psychotic and parkinsonian symptoms proven with validated scales were observed following the repeating electroconvulsive therapy sessions. This is the first case report describing the use of electroconvulsive therapy in a patient with dementia with Lewy bodies in Korea. This case report may help to establish new guidelines for the treatment of patients with dementia with Lewy bodies, which is still considered a difficult disease to treat.
金翰琳,邊起煥 濟州大學校亞熱帶農業硏究所 1991 亞熱帶農業硏究 Vol.8 No.-
참깨의 育種 效率 增大를 爲하여 組織培養技術의 利用을 위한 基礎的 硏究로서 品種에 따른 部位別 칼루스 形成과 植物體 形成에 미치는 影響을 調査하였던 結果는 다음과 같다. 1. 單獨處理에서는 NAA가 칼루스나 莖頂 및 根分化에서 IAA보다 優秀하였다. 2. MS 培地에 kinetin 2.0mg/ℓ 處理한 것에서 89%, NAA 0.5mg/ℓ 處理한 것에 完全 植物體 分化率은 62%로 가장 높았다. 3. Auxin系의混合 處理에서는 NAA와 kinetin 混合이 NAA와 BA 混合보다 完全 植物體 分化에 效果的이었으며 特히 NAA 0.5mg/ℓ와 kinetin 0.5mg/ℓ 混合 處理에서完全 植物體 分化率이91%로 가장 效果的이었다. 4. NAA와 kinetin 混合 處理時, NAA 濃度增加는 莖頂 分化를抑制하나 根分化에는 큰 影響을 미치지 않았다. 5. 生長調節物質의 混合 處理에서 NAA 0.5mg/ℓ, IAA 0.5mg/ℓ, kinetin 2.0mg/ℓ는 98%의 分化率을 보여 가장 效果的이었다. 6. 品種間 칼루스 形成은 단백깨에서 삼다 보다 높은 形成率을 보였다. This study was conducted to study the effect of NAA, IAA, 2.4-D, BA and kinetin on the organ culture from the cotyledon and hypocotyl in sesame. (Sesamum indicum L.) The results obtained are summarized as follows. In single treatment of NAA and IAA, NAA was better in shoot and root differentiation than IAA. Among the various hormones used, kinetin 2.0mg/ℓ was found to be the highest in shoot differentiation and NAA 0.5mg/ℓ in whole plant induction percentage. The whole plant induction percentages were 91% and 47% in the combinations of NAA 0.5mg/ℓ+kinetin 0.5mg/ℓ and NAA 0.5mg/ℓ+BA 0.5mg/ℓ respectively. Due to the interaction between NAA and kinetin, increase of NAA concentration reduced the shoot differentiation but did not influence the root differentiation significantly. The most desirable medium was the MS medium containing NAA 0.5mg/ℓ+IAA 0.5mg/ℓ+kinetin 2.0mg/ℓ. The whole plant induction percentage was 99% in this medium. Danbaeg was better for callus induction than Samda.
지역사회 거주 노인의 인지기능과 우울증상 사이의 상관성 분석
조현,변기환,권성옥,한지원,배종빈,양희원,임은지,김기웅,곽경필,김봉조,김신겸,김정란,문석우,박준혁,윤종철,이동영,이동우,이석범,이정재,정현강,김태희,유승호,주진형 대한노인정신의학회 2021 노인정신의학 Vol.25 No.1
Objective: The aim of this study was to reveal the association between the depressive symptom and cognitive function of participants with normal cognitive function, mild cognitive impairment (MCI), and dementia in a large-scale community elderly cohort. Methods: A total of 6,338 elderly participants who participated in the Korean Longitudinal Study on Cognitive Aging and Dementia (KLOSCAD) from November 2010 to October 2012 were evaluated through cross-sectional analysis. Cognitive evaluation was conducted with Korean Version of Mini Mental Status Exam for Dementia Screening (MMSE-DS) and Consortium to Establish a Registry for Alzheimer’s Disease Assessment Packet (CERAD) neuropsychological tests, and depressive symptoms were evaluated with Revised Korean Version of the Geriatric Depression Scale (GDS-KR). Results: 4,352 normal cognitive elderly participants, 1,748 MCI and 238 dementia participants were enrolled in the study. Correlation analysis showed a significant negative correlation between MMSE-DS and GDS-KR in the normal elderly group and participants with MCI, but not in dementia participants. This was the same in the correlation between CERAD-TS (total score) and GDSKR score. Conclusion: This study found that worse cognitive function in the community cohort worsened depressive symptoms in groups with normal and MCI, but no significant correlation was observed in patients with dementia.
단일 Database Field를 이용한 PHP 무한 File Upload 구현
황기환,변기환,이지영,Hwang, Ki-Hwan,Byun, Ki-Hwan,Lee, Jie-Young 한국정보기술전략혁신학회 2009 情報學硏究 Vol.12 No.2
Currently the Web, multiple files in the Client to upload to the server of the multi-upload method, files are stored in specific folders on the server, the file name field in DB(Database Field) stored in a way that the process has been widely utilized. Therefore, a minimum number of file upload as many file names in the Database and the Table should be created in the field, but also a variable number of files can be uploaded has no limits. In this paper we proposed the new method that files to be uploaded to the server, you can upload a limited number of files, nor due to upload files to reduce load on the database to improve the processing speed of a single field using a multi-method file uploads using PHP directly implemented