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모바일 환경에서 추론을 이용한 의미 기반 이미지 어노테이션 시스템 설계 및 구현
서광원 ( Kwang-won Seo ),임동혁 ( Dong-hyuk Im ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1
본 논문에서는 이전의 의미 기반 이미지 어노테이션 및 검색 시스템 Moment(Mobile Semantic Image Annotation and Retrieval System)에 RDF(Resource Description Framework) 추론 기능을 사용한 어노테이션 방법을 제안한다. 이를 위하여 제안된 시스템은 Apache Jena Inference API를 통해 구현되였으며 각 이미지들이 가진 어노테이션의 개수가 증가되었다. 자동으로 추론된 결과 또한 SPARQL 질의를 통해 검색이 가능하며, 기존 어노테이션 결과에 대한 의미 검색을 더욱 효과적으로 할 수 있게 한다.
기관지확장증 환자의 객담 균주 분석: 울산지역의 일개 대학병원 보고
서광원 ( Kwang Won Seo ),황세진 ( Se Jin Hwang ),성시정 ( Shi Jung Sung ),김세진 ( Se Jin Kim ),도기원 ( Gi Won Do ),허성재 ( Seong Jae Hur ),임경훈 ( Kyung Hun Lim ),홍순형 ( Soon Hyung Hong ),김동민 ( Dong Min Kim ),전재범 ( Jae 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.67 No.6
Background: Bronchiectasis (BE) remains a rare respiratory disease in Korea. This retrospective study was done to investigate the potential pathogenic microorganisms (PPMs) that cause in patients with BE, through the use of sputum specimens. Methods: One hundred eleven adult patients, who had undergone chest computed tomography (CT), sputum gram stain/culture, and BE detected by chest CT, were included in this study. Sputum adequacy was determined by using Murray-Washington classification. Results: The mean (±SD) age of patients was 60.9 (±14.0). The number of PPMs was 167 (67%) in the total 248 isolated organisms. The most frequent PPMs were P. aeruginosa (23.4%), K. pneumoniae (10.5%), and S. aureus (8.4%). The proportion of adequate sputum (AS) was 25.8% in the total sputum specimens. The patients with AS were 41 (37%) and the patients with inadequate sputum (IS) were 70 (63%). The proportion of P. aeruginosa was higher in AS compared to that of IS (44% vs. 19%, p=0.004). The BE score was also higher in P. aeruginosa (+) patients compared to that of P. aeruginosa (-) patients (10.8vs.7.6, p=0.001). Conclusion: Although the proportion of AS in the total sputum was low, PPMs were isolated in most patients with BE. It is likely that P. aeruginosa was isolated in AS and AS patients had higher BE scores.
산소 에틸렌 토치로 동파이프 절단작업 후 발생한 이산화질소 중독에 의한 비심인성 폐부종 1례
제갈양진,안종준,서광원,차희정,권운정,김양호,JeGal, Yang-Jin,Ahn, Jong-Joon,Seo, Kwang-Won,Cha, Hee-Jeong,Kwon, Woon-Jung,Kim, Yang-Ho 대한임상독성학회 2006 대한임상독성학회지 Vol.4 No.2
Welders are exposed to a number of hazards including metal fumes, toxic gases, electricity, heat, noise, and radiation such as ultraviolet and infrared light. We encountered a patient who developed non-cardiogenic pulmonary edema within a day after cutting copper pipe with an oxyethylene torch. The patient was a 26-year-old welder. He complained of dyspnea, generalized myalgia, and febrile sensation the following morning. The patient's chest X-ray and chest CT scan showed extensively distributed and ill-defined centrilobular nodules. Both his symptoms and chest X-ray abnormalities improved spontaneously. We attributed the patient's symptoms to non-cardiogenic pulmonary edema due to nitrogen dioxide, reasoning that: 1) the pipe consisted only of copper, according to material safety data sheet (MSDS); 2) a previous report in the literature demonstrated increased nitrogen dioxide levels under similar conditions; 3) the patient's clinical course and radiologic findings were very reminiscent of non-cardiogenic pulmonary edema following accidental exposure to nitrogen dioxide.
이혁,김영통,서광원,김서희,신형철,한건수,김일영,이혜경,Lee, Hyeok,Kim, Young-Tong,Seo, Kwang-Won,Kim, Seo-Hee,Shin, Hyeong-Cheol,Han, Kun-Soo,Kim, Il-Young,Lee, Hye-Kyung 대한영상의학회 1997 대한영상의학회지 Vol.37 No.6
Purpose:To analyse the ultrasonographic findings normal thymus in infants and determine the pathologic findings. Materials and Methods:Forty two infants without a history of chronic disease, tumor or steroid therapy were scanned in the axial planes with a 7.0 MHz sector transducer. Bilaterality, homogeneity, and the types, namely bilobate, quadragular or triangular. The intensities of thymic echogenicity were compared with those of the liver and spleen under the same conditions(time-gain compensation, depth and gain). Results:Bilaterality was seen in 36 cases, homogeneity in 35, homogeneity and bilaterality in 29, inhomogeneity and bilaterality in seven, and homogeneity and unilaterality in six. No case showedinhomogeneity and unilaterality. The shape was bilobate in 23 case, quadrangular in 13 and triangular in six, while the other border was convex in 29 cases and straight in 13. In no case wasechogenicity of the thymus greater than that of the liver or spleen. Transverse diameters were echogenicity of the thymus greater than that of the liver or spleen. Transverse diameters were 21-47mm(mean, 37.0mm;SD, 9.4mm) and depths were 10-37.5mm(mean, 25.8mm;SD, 5.9mm). Conclusion:The usual findings of normal thymus in infants are bilaterality and homogeneity, convex or shaight outer border, and echo intensity less than or equal to that of the liver and spleen. The possibility of thymic pathology is suggested when ultrasonography shows uniaterality, inhomogeneous echogeneity, and echogenicity greater than that of the liver and spleen.
만성폐쇄성폐질환 환자에서 Beraprost sodium의 효과에 대한 연구: 이중 맹검 무작위 임상시험
이상도 ( Sang Do Lee ),서광원 ( Kwang Won Seo ),이정연 ( Jung Yeon Lee ),허진원 ( Jin Won Huh ),최익수 ( Ik Su Choi ),박재선 ( Jae Sun Park ),심태선 ( Tae Sun Shim ),오연목 ( Yeon Mok Oh ),박인원 ( In Won Park ),류왕성 ( Wang Seon 대한결핵 및 호흡기학회 2004 Tuberculosis and Respiratory Diseases Vol.57 No.4
미립자공학,유동층,고분자,재료 : 무기, 유기 ; 금속코팅용 광경화 코팅필름의 물성에 대한 아크릴산(Acrylic acid)의 영향
서종철 ( Jong Chul Seo ),최준석 ( Jun Suk Choi ),장츼성 ( Eui Sung Jang ),서광원 ( Kwang Won Seo ),한학수 ( Ha Ksoo Han ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.1
본 연구에서는 스테인레스 스틸(stainless steel)의 표면 코팅용 광경화 필름 개발을 위하여 isophorone diisocyanate (IPDI), polycaprolactone triol(PCLT), 2-hydroxyethyl acrylate(HEA), 그리고, 희석제로서 trimethylolpropane triacrylate (TMPTA)와 acrylic acid(AA)의 첨가비율을 달리한 광경화형 poly(urethane acrylate-co-acrylic acid)(PU-co-AA) 필름을 성공적으로 제조하였으며, 제조한 PU-co-AA 필름의 모폴로지, 접착특성, 기계적 특성, 전기적 특성 등에 대한 AA 첨 가량의 영향을 조사하였다. 모든 PU-co-AA 필름은 비정형 구조를 나타내었으나, AA의 함량이 증가할수록 분자 규칙 및 패킹밀도는 감소하였다. 접착특성은 AA 함량 50% 이상에서는 접착력 5B 수준으로 스테인레스 스틸에 대한 우수 한 접착특성을 나타내었으며, AA 함유량이 0%에서 66%까지 증가함에 따라 Pull-off strength법 접착력은 6~31 kgf/cm2로 선형적으로 증가하였다. 광경화 폴리우레탄 아크릴레이트의 접착력을 증가시키기 위한 유연한 사슬구조와 2관능기를 가진 AA의 도입은 다관능기의 TMPTA의 높은 가교밀도를 줄임으로써 효과적인 것을 확인할 수 있었으며, AA 함량 이 증가함에 따라 접촉각의 감소와 젖음성의 향상을 확인하였다. 한편, 유연한 사슬 및 곁사슬 -COOH를 가진 AA의 도입은 규칙성 및 패킹밀도의 감소를 나타내며, 이는 PU-co-AA 필름의 경도 저하를 나타내며, 또한 AA의 분자 내의 작용기 -COOH는 고분자 필름 내의 분극현상을 증가시킴으로써 유전상수의 증가 경향을 나타내었다. 결론적으로 PUco- AA 필름의 물리적 특성은 첨가한 AA의 함량에 크게 의존함을 확인할 수 있었다. 또한, 광경화 폴리우레탄 아크릴 레이트에 아크릴산 AA의 도입은 사슬의 유연성 증가와 가교밀도의 감소 영향으로 스테인레스 스틸과의 접착력을 향상시키는데 매우 효과적인 방법임을 확인할 수 있었다. Five different composition UV-cured poly(urethane acrylate-co-acrylic acid) (PU-co-AA) films have been prepared by reacting isophorone diisocyanate(IPDI), polycaprolactone triol(PCLT), 2-hydroxyethyl acrylate(HEA), and different weight ratio trimethylolpropane triacrylate(TMPTA) and acrylic acid(AA) as diluents, and characterized using a Fourier transform infrared spectroscopy(FT-IR). The adhesion properties onto the stainless steel, morphology, mechanical hardness, and electrical property of UV-cured PU-co-AA films were investigated as a function of acrylic acid(AA) content. All the PU-co-AA films are structure-less and the molecular ordering and packing density decreased with increasing content of AA due to the flexible structure and -COOH side chains in AA. The crosscut test showed that PUco-AA films without AA and with low content of AA showed 0% adhesion(OB) and the adhesion of PU-co-AA films in the range of 4()""`50"10 AA increased dramatically as the content of AA increases. The pull-off measurements showed that the adhesion force of PU-co-AA films to stainless steel substrate varied from 6 to 31 kg/cm2 and increased linearly with increasing AA content. The mechanical hardness also decreased as the content of AA increases. This may come from relatively linear and flexible structure in AA and low crystallinity in PU-co-AA films with higher content of AA. The higher AA-containing PU-co-AA films showed higher dielectric constant due to the increase of polarization by intra-ducing AA monomer. In conclusion, the physical properties of UV-cured PU-co-AA films are strongly dependent upon the content of AA and the incorporation of AA in polyurethane acrylate is very useful way to increase the adhesion strength of UV-curable polymers on the stainless steel substrate.