정신분열병 입원 환자에서 단축형 증상관리 훈련의 효과:예비적 연구

최충식,채정호,우동원,최영희,함웅,이규항,장미화 대한신경정신의학회 2001 신경정신의학 Vol.40 No.1

연구목적: 정신분열병 환자에서의 재활치료는 개인의 극복 기술과 능력을 향상시키고 재발을 유발시킬 수 있는 스트레스의 부정적인 영향을 중화시킴으로써 질병의 만성화를 막고 사회기능을 호전시킬 수 있기에 점차 그 중요성이 대두되고 있다. 본 연구는 만성 정신분열병 입원 환자에서 재활치료의 하나인 단축형 증상관리 훈련이 정신장애에 대한 자기 인식에 미치는 효능을 알아보기 위하여 시행되었다. 방법: 정신분열병으로 진단받고 입원 중인 환자들에게 재발경고징후를 규명하는 것, 재발경고징후를 관리하는 것, 지속증상을 극복하는 것, 술과 불법 약물을 피하는 것 등으로 구성된 승인-UCLA 사회기술 및 독립적인 생활기술훈련 단위 중 증상관리단위를 기초로 한국실정에 맞게 축약한 증산관리 훈련을 주 1회, 60분씩, 4∼5주간 실시하였고 실시 전후에 전신장애 비인식 평가 척도(Scale to Assess Unawareness ofMental Disorder; 이하 SUMD)로 자신의 정신장애에 대한 인식을 평가하였으며 임상적 전반적 인상(Clinical Global Impression;이하 CGI)로 임상 상태를 조사하였고 각 인구학적 변인들을 조사하였다. 결과: 환자 30명이 훈련을 완수하였으며 이들의 평균 연령은 36.6±7.6세였고 남자가 14명(46.7%), 여자가16명(53.3%)이었다. SUMD 점수는 훈련 전 16.9±4.0점에서 훈련 후 12.9±4.2점으로 유의하게 줄어 정신장애에 대한 자기 인식 정도가 향상되었으며(p<0.01), CGI도 훈련전의 3.7±0.9점에서 훈련 후 2.8±0.8점으로 유의하게 호전되었다(p<0.01). 환자의 연령, 발병시 연령, 유병 기간, 입원 기간, 항정신병약물 사용 용량, 교육 정도, CGI로 평가한 임상 상태등은 정신장애의 자기 인식 정도와는 관련성이 없었다. 결론: 정신분열병 입원 환자에서 단축형 증상관리 훈련은 정신장애에 대한 자기 인식을 증가시킬 수 있는 방법이 될 가능성을 확인하였으며 이 방법이 정신분열병 재활치료의 중요한 요소가 될 수 있음을 알 수 있었다. Objectives : The purpose of this study was to examine whether Symptom Management Module-Korean Brief Version(SMM-B) is effective as a psychosocial treatment of the inpat-ients with chronic schizophrenia. We also questioned which of demographic and clinical characteristics could be predictors of differential treatment response. Methods : The subjects were composed of 30 inpatients with chronic schizophrenia, who were trained with weekly session of SMM-B for 5 weeks. Before and after the training, the level of psychopathology, knowledge about schizophrenia were assessed as dependent variables by using Clinical Global Impression(CGI) and Scale to Assess Unawareness of Mental Disorder(SUMD). Results : Overall, patients showed improvement over the treatment period on psychopath-ology as well as knowledge about psychosis. Total scores of SUMD were changed from 16.9±4.0 before training to 12.9±4.2 after training(p<0.01) and scores of CGI were improved from 3.7±0.9 to 2.8±0.8<p<0.01). Howver age, gender, years of education, age of onset, duration of illness, duration of admission, numbers of psychiatric admission, and clinical status evaluated by CGI were not correlated with unawareness of psychosis. Conclusion : These results suggest that SMM-B could be a reliable method to improve self-aw-areness of psychosis in patients whth chronic schizophrenia and one of important elements in rehabilitation.

OFDMA 시스템을 위한 저 복잡도 부반송파 할당기법

우중재(Choong-Chae Woo),고균병(Kyun-Byoung Ko) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6

The focus of this paper is a proposal for a computationally efficient dynamic subcarrier allocation (DSA) algorithm for orthogonal frequencydivision multiple access (OFDMA) systems. The proposed DSA algorithm considerably reduces the computational complexity and the amount of channel quality information (CQI) compared to amplitude craving greedy (ACG) algorithms, which use full CQI. At the same time, the performance of the proposed algorithm closely approaches that achieved by ACG algorithms.

Dual-energy Computed Tomography Characterization of Solitary Pulmonary Nodules

Chae, Eun Jin,Song, Jae-Woo,Krauss, Bernhard,Song, Koun-Sik,Lee, Choong Wook,Lee, Hyun Joo,Seo, Joon Beom Lippincott Williams Wilkins, Inc. 2010 Journal of thoracic imaging Vol.25 No.4

For the assessment of solitary pulmonary nodules (SPNs), a chest computed tomography (CT) is often performed as a combination of a nonenhanced and an enhanced scan. A nonenhanced scan is used for the detection of calcification in the SPN or lymph node, as the presence of calcification is one of the important determinants of benignity. An enhanced scan is informative in providing the degree and pattern of enhancement. In particular, the degree of enhancement of an SPN after iodine injection has been shown to be helpful in distinguishing malignant from benign nodules. Recently introduced dual-energy applications of dual-source CT simultaneously provide a virtual nonenhanced and an iodine-enhanced image from a single scan, after the administration of iodine contrast material. Therefore, a single enhanced dual-energy CT scan allows both measurement of the degree of enhancement and detection of calcifications. It may reduce radiation exposure to patients by avoiding baseline nonenhanced scans and may also reduce measurement error due to different regions of interest during the subtraction of a nonenhanced image from an enhanced image. This technique may have applications in contrast-enhanced dynamic CT and perfusion CT for the differentiation between benign and malignant lesions and the assessment of tumor angiogenesis. In this review article, we sought to address the usefulness of dual-energy CT for the assessment of SPN. In addition, we briefly review the physical principles of dual-energy CT and discuss potential future applications in patients with lung nodules.

Spray behavior of low flash point fuel in constant combustion chamber

Chae Yoon Chang(장채윤),Sang Uk Lee(이상욱),Seung Woo Kang(강승우),Choong Sik Bae(배충식) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.08

Spin-orbit coupling induced band structure change and orbital character of epitaxialIrO2films

Kim, Woo Jin,Kim, So Yeun,Kim, Choong H.,Sohn, Chang Hee,Korneta, O. B.,Chae, Seung Chul,Noh, Tae Won American Physical Society 2016 Physical Review B Vol.93 No.4

Evaluation of computer-aided detection and dual energy software in detection of peripheral pulmonary embolism on dual-energy pulmonary CT angiography

Lee, Choong Wook,Seo, Joon Beom,Song, Jae-Woo,Kim, Mi-Young,Lee, Ha Young,Park, Yang Shin,Chae, Eun Jin,Jang, Yu Mi,Kim, Namkug,Krauss, Bernard Springer-Verlag 2011 EUROPEAN RADIOLOGY Vol.21 No.1

Handover 기반과 Non-Handover 기반의 Mobility Management 기법의 비교

우중재,주형식,Woo, Choong-Chae,Ju, Hyung-Sik 한국전기전자학회 2012 전기전자학회논문지 Vol.16 No.2

본 논문에서는 macro-cell 위에 동일한 주파수를 쓰는 pico-cell이 overlay 되어 있는 환경에서, 움직이는 사용자에 대한 management 방법이 움직이는 사용자가 지원 받을 수 있는 data rate에 미치는 영향을 분석한다. 이러한 분석을 통해 mobility management 방식에 따른 움직이는 사용자가 지원받을 수 있는 data rate는 사용자와 pico-cell의 상대적 위치에 의존함을 확인하였다. In this paper, we analyze the effect of mobility management method to the data rate of moving users when pico-cell which uses the same frequency bandwidth as that of macro-cell is overlaid over macro-cell. From this analysis, we show that the data rate which is available to the moving user depends on the method of mobility management and relative location of the overlaid pico-cell over macro-cell in the network.

Signal Processing for Perpendicular Recording Systems

Lee, Jun,Woo, Choong-Chae Institute of Korean Electrical and Electronics Eng 2011 전기전자학회논문지 Vol.15 No.1

Longitudinal recording has been the cornerstone of all two generations of magnetic recording systems, FDD and HDD. In recent, perpendicular recording has received much attention as promising technology for future high-density recording system Research into signal processing techniques is paramount for the issued storage system and is indispensable like longitudinal recording systems. This paper focuses on the performance evaluation of the various detectors under perpendicular recording system. Parameters for improving the their performance are examined for some detectors. Detectors considered in this work are the partial response maximum likelihood (PRML), noise-predictive maximum likelihood (NPML), fixed delay tree search with decision feedback (FDTS/DF), dual decision feedback equalizer (DDFE) and multilevel decision feedback equalizer (MDFE). Their performances are analyzed in terms of mean squared error (MSE) and noise power spectra, and similarity between recording channel and partial response (PR) channel.

OFDMA 시스템을 위한 저 복잡도 부반송파 할당기법

우중재,왕한호,Woo, Choong-Chae,Wang, Han-Ho 한국융합신호처리학회 2012 융합신호처리학회 논문지 (JISPS) Vol.13 No.2

본 논문은 직교주파수 분할 다중접속 시스템 (Orthogonal Frequency-division Multiple Access: OFDMA)에서 계산 효율적인 동적 부반송파 할당 (Dynamic subcarrier allocation :DSA) 기법을 제안하였다. 제안된 DSA 기법은 계산량을 크게 줄일 수 있을 뿐 아니라 전체 Channel quality information (CQI)를 전송하는 Amplitude Craving Greedy (ACG) 기법에 비해 CQI 정보량도 줄일 수 있다. 하지만 제안된 기법의 성능은 ACG 기법과 거의 유사하게 나타난다. 또한, 신호 대 잡음비에 기반한 대역폭 할당기법 (Bandwidth assignment based on the signal-to-noise ratio: BABS) 개선한 대역폭 할당기법을 제안하였다. 개선된 BABS 기법은 제안된 DSA 기법과 결합되어 기존 기법에 비해 더욱 높은 아웃티지 성능 이득을 나타낸다. The focus of this paper is a proposal for a computationally efficient dynamic subcarrier allocation (DSA) algorithm for orthogonal frequency-division multiple access (OFDMA) systems. The proposed DSA algorithm considerably reduces the computational complexity and the amount of channel quality information (CQI) compared to amplitude craving greedy (ACG) algorithms, which use full CQI. At the same time, the performance of the proposed algorithm closely appear to ACG algorithms. Moreover, the authors present a new bandwidth-assignment algorithm produced by modifying bandwidth assignment based on the signal-to-noise ratio (BABS). This modified BABS algorithm enables the proposed DSA algorithm to produce a strong outage performance gain over the conventional scheme.

딥러닝 기반 이미지 특징 추출 모델을 이용한 유사 디자인 검출에 대한 연구

이병우(Byoung Woo Lee),이우창(Woo Chang Lee),채승완(Seung Wan Chae),김동현(Dong Hyun Kim),이충권(Choong Kwon Lee) 한국스마트미디어학회 2020 스마트미디어저널 Vol.9 No.4

디자인은 섬유패션 산업에서 제품의 경쟁력을 결정짓는 핵심요인이다. 무단복제를 방지하고 독창성을 확인하기 위하여 제시된 디자인의 유사도를 측정하는 것은 매우 중요하다. 본 연구에서는 딥러닝 기법을 이용하여 섬유 디자인의 이미지로 부터 특징(feature)을 수치화하고, 스피어만 상관계수를 이용하여 유사도를 측정하였다. 유사한 샘플이 실제로 검출되는지 검증하기 위하여 300장의 이미지를 임의로 회전 및 색상을 변경하였다. 유사도 수치가 높은 순으로 Top-3와 Top-5의 결과에 회전을 하거나 색상을 변경한 샘플이 존재하는지 측정하였다. 그 결과, AlexNet 보다 VGG-16 모델이 월등히 높은 성능을 기록하였다. VGG-16 모델의 성능은 회전 이미지의 경우에 유사도 결과값이 높은 Top-3와 Top-5에서 64%, 73.67%로 가장 높게 나타났다. 색상변경의 경우에는 Top-3와 Top-5에서 각각 86.33%, 90%로 가장 높게 나타났다. Design is a key factor that determines the competitiveness of products in the textile and fashion industry. It is very important to measure the similarity of the proposed design in order to prevent unauthorized copying and to confirm the originality. In this study, a deep learning technique was used to quantify features from images of textile designs, and similarity was measured using Spearman correlation coefficients. To verify that similar samples were actually detected, 300 images were randomly rotated and color changed. The results of Top-3 and Top-5 in the order of similarity value were measured to see if samples that rotated or changed color were detected. As a result, the VGG-16 model recorded significantly higher performance than did AlexNet. The performance of the VGG-16 model was the highest at 64% and 73.67% in the Top-3 and Top-5, where similarity results were high in the case of the rotated image. appear. In the case of color change, the highest in Top-3 and Top-5 at 86.33% and 90%, respectively.