진피하 기저세포암

최성우,양정은,장인강,김형옥,조성필 ( Sung Woo Choi,Jeung Eun Yang,In Gang Jang,Hyung Ok Kim,Seong Pil Joh ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.5

Basal cell carcinomas usually arise from the epidermis and show some epidermal connections. It is very unusual that basal celi carcinomas occur as subderrnal mass without epidermal connections. A 51 year-old female h;d an asymptomatic skin colored indurated plaque with linear old scar on the left side of nose fcr about 20 years. She had had a tumor that supposed to be a epidermal cyst, on the same site and the lesion was excised about 20 years ago. We performed the punch biopsy on her first visit which revealed hypertrophic scar. She was treated with intralesional injection of triamcinolone acetonide to reduce the size of hypertrophic scar. However, the lesion had not been reduced. She underwent the surgery to remove the scar at plastic surgery and the excisional biopsy showed a subdermal basal cell carcinoma. We recommend that the newly developed skin tumor in the pre-excised region should be required excisional biopsy instead of punch and close observation (KOfean J Dermatol 1997;35(5): 1036-1039)

성인에서 발생한 단발성 근섬유종

최성우,박종갑,김태윤,김형옥,김정원,강석진 ( Sung Woo Choi,Jong Gap Park,Tae Yoon Kim,Hyung Ok Kim,Chung Won Kim,Seok Jin Kang ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.5

Myofibroma and myofibromaiosis are uncommon, benign, mostly self-limiting, probably hamartomatous proliferation of myofibroblasts. These tumors are most often present at birth or before the age of 2 years with multiple ot solitary lesion. Adult cases are rare and most,ly showed as a solitary lesion. We present a case of solitary myofibroma that developed on the vertex of scalp in a 51-year-old man. The lesion was a mild tender and intermittent pruritic firm, pedunclated 1 1cm sized tumor. The iumor was diagnosed as myofibroma by light microscopy and immunohistochemistry. (Korean J Dermatol 1907;35(5): 1031-1035)

콘크리트용 골재로써 철강산업 부산물의 활용

최성우,김영선,류득현,조봉석,Choi, Sung-Woo,Kim, Young-Sun,Ryu, Deug-Hyun,Cho, Bong-Suk 한국건설순환자원학회 2019 한국건설순환자원학회지 Vol.14 No.2

전라남도 거주 여성 중 사별군과 비사별군간의 건강행태 비교

최성우,이정애,신준호,신민호,Choi, Seong-Woo,Rhee, Jung-Ae,Shin, Jun-Ho,Shin, Min-Ho 대한예방의학회 2008 예방의학회지 Vol.41 No.4

Objectives: To compare the health behaviors of widowed women with those of currently married women. Methods: We randomly sampled the subjects from the Jeollanamdo Resident Registration Data and we then selected 2,331 widowed women and 4,775 married women. Well-trained examiners measured the height, weight, blood pressure and abdomen circumference, and the women were interviewed with using a questionnaire. Logistic regression analysis was used to estimate the odds ratios(OR) of the two groups. Results: The smoking rate (OR=2.46; 95% confidence interval [CI]1.65, 3.66) was significantly higher for the widowed women. On the contrary, the awareness rate of a smoking cessation campaign (OR=0.80; 95% CI=0.70, 0.92), a quit tobacco telephone line (OR=0.73; 95% CI =0.61, 0.88) and a quit smoking clinic (OR=0.74; 95% CI=0.62, 0.89) were lower for the widowed women. The rate of receiving a health exam (OR=0.80; 95% CI=0.70, 0.91), the rate of undergoing gastric cancer screening (OR=0.77; 95% CI=0.68, 0.88), breast cancer screening (OR=0.79; 95% CI=0.69, 0.89), cervix cancer screening in the last 2 years (OR=0.81; 95% CI=0.71, 0.92), colon cancer screening in the last 5 years (OR=0.74; 95% CI=0.63, 0.87) were significantly lower for the widowed women. Conclusions: This study revealed that the health behaviors are significantly different between the widowed women and the married women. To improve the health behaviors of the widowed women, further study and research that will investigate the socioeconomic and environmental factors that affect the health behaviors of widowed women will be needed.

HomePNA 2.0 모뎀 수신부 설계

최성우,김종원,Choi, Sung-Woo,Kim, Jong-Won 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.9A

본 논문은 HomePNA 2.0 모뎀 칩을 위한 모뎀 수신부의 구조를 제안한다. HomePNA 2.0 전송 채널은 브릿지 탭과 HAM 대역의 영향 등으로 매우 열악하다. 이러한 채널을 통해 전송을 가능하게 하기 위해 HomePNA 2.0 은 훈련신호를 사용하여 매 프레임 마다 채널을 등화하고 FD-QAM 전송 방식을 선택적으로 사용한다. 따라서 모뎀 수신부는 일반적 QAM 방식 신호의 북조 기능과 함께 이러한 전송 방식의 특정을 최대한 상려 모뎀 수신 성 능을 극대화 히는 구조가 필요하다 연구 결과 모뎀 수신부의 가능을 송수신 상태에 따라 정상 수신 모드와 충돌 감지 오드의 2 가지로 정의 하였다 본 논문은 특히, 모뎀 수신부를 구성하는 핵심 블록인 등화기와 위상 동기부, 프레임 동기부에 대해서 사용된 알고리즘을 밝혔으며, 버스트 방식 모뎀의 채널 등화 성능을 높이고 안정적으로 동작 시키기 위한 구조를 제얀 하였다 마지막으로 제안된 모뎀 수신부의 성능을 분석하기 위해서 SPW 모델을 사용하여 채널 별 전송 가능 속도를 예측 하였다. In this paper, we propose the architecture of modem receiver to fabricate HomePNA 2.0 chip. HomePNA suffers from inferior channel because of bridge tap, the effect of amateur HAM band and so on. To transfer data over such channel, HomePNA 2.0 uses training sequence to equalize channel and uses FD-QAM optionally as modulation method. So modem receiver demodulate QAM based signal and needs optimum architecture that fully uses these transmission feature. As a result of research, we define 2 mode function of modem receiver depending on TX/RX state. In this paper, particularly, we show the algorithm of equalizer, carrier phase recovery and frame synchromzationblock and propose architecture that improve the performance of channel equalization and is stable in operation. In the end, we estimate the performance of proposed HomePNA2.0 modem receiver over HomePNA TEST LOOP using SPW program.

한국판 국제 소아천식 및 알레르기 질환 연구 설문지의 신뢰도 및 타당도 연구

최성우,주영수,김대성,김재용,권호장,강대희,이상일,조수헌,Choi, Seong-Woo,Ju, Yeong-Su,Kim, Dae-Sung,Kim, Jae-Yong,Kwon, Ho-Jang,Kang, Dae-Hee,Lee, Sang-Il,Cho, Soo-Hun 대한예방의학회 1998 예방의학회지 Vol.31 No.3

Recent increases of asthma and allergies in childhood made the need for a standardized approach to international and regional comparisons of their prevalence and severity. To address these issues, 'International Study of Asthma and Allergies in Childhood (ISAAC)' is currently underway. In Korea, 'Nationwide Study of Asthma and Allergies in Korean Children' began in 1995 according to ISAAC protocol. ISAAC written and video questionnaires were used in this survey, but their reliability and validity were not evaluated properly yet. In this study, our aim was to evaluate the reliability and validity of two kinds of questionnaires and their usefulness in international and regional comparisons. The test and retest of two questionniares were completed by male(n=110) and female(n=111) middle school students with two and three weeks interval each. Kappa(or weighted kappa) were calculated from each questions and validity coefficients were estimated from those statistics. In Korean version of written questionnaire, the questions for allergic rhinitis, atopic dermatitis, allergic conjunctivitis, and food allergy proved to have high kappa values (or weighted kappa values) and validity coefficients and they can be used in further studies without any correction. But some questions about asthma(especially nocturnal cough, wheezing in exercise, and severe asthma) and drug allergy need to be revised for better under-standing to study subjects. Video questionnaire has the same degree of reliability and validity when compared to written questionnaire and this is the unexpected result. Accordingly, it also need to be revised to overcome the racial and cultural differences of the study subjects. In conclusion, the Korean version of written and video questionnaires may be considered to be useful methods in international and regional comparisons of asthma and allergic diseases in childhood after correction of some questions.

비정질 강섬유를 사용한 ECC의 유동성 및 강도 특성

최성우(Choi, Sumg Woo),김정식(Kim, Jung Shik),류득현(Ryu, Deug Hyun),최광호(Choi, Kwang Ho),최세진(Choi, Sea Jin) 한국콘크리트학회 2015 한국콘크리트학회 학술대회 논문집 Vol.2015 No.5

실시간 대기이동측정시스템을 이용한 산업단지 주변 대기오염물질 분포 특성

최성우(Seongwoo Choi),박승우(Seungwoo Park),차영욱(Youngwook Cha),이서이(Seoi Lee),유은철(Eunchul Yoo) 대한환경공학회 2021 대한환경공학회지 Vol.43 No.6

척추외과 의사의 직업성 근골격계 질환

최성우(Sung-Woo Choi),이재철(Jae Chul Lee),장해동(Hae-Dong Jang),전민철(Min-Chul Jeon),김중혁(Joong Hyuk Kim),김충현(Chung-Hyun Kim),박수연(Suyeon Park),신병준(Byung-Joon Shin) 대한정형외과학회 2016 대한정형외과학회지 Vol.51 No.6

목적: 척추외과 의사들의 근골격계 질환의 유병률과 발생 위험요소를 조사하고자 한다. 대상 및 방법: 근골격계 질환에 대한 수정된 discomfort survey를 사용한 설문지를 대한척추외과학회 회원들에게 e-mail로 발송하였다. 설문지의 구성은 인류사회학적 요소, 수술 업무 관련 요소, 근골격계 질환 관련 요소로 이루어졌다. 근골격계 질환의 호발 부위와 발생 위험요소에 대하여 조사하였다. 결과: 총 대상자 420명 중 80명(19.0%)이 응답하였다. 78.8%에서 최근 1년 동안 수술로 인한 근골격계 통증이 있었고, 흔히 발생하는 부위는 목(52.5%), 허리(46.3%), 어깨(18.8%)였다. 척추 수술 집도 개수가 많은 군(>200건/year)에서 그렇지 않은 군보다 주관절/전완부 통증이 많았고(p=0.033), 대수술을 많이 시행하는 군(>10건/year)에서 그렇지 않은 군보다 손목/손의 통증(p=0.008)과 허리의 통증이 더 많았다(p=0.042). 결론: 척추외과 의사들의 78.8%에서 최근 1년 동안 수술로 인한 근골격계 통증이 있었고, 일반인과 비교하였을 때 높은 유병률을 보였다. 이런 현 상태에 대한 정확한 인식과 척추외과 의사들의 근골격계 질환의 예방에 대해 많은 관심이 필요하다. Purpose: To investigate the prevalence and risk factors of musculoskeletal disorder (MSD) among spine surgeons. Materials and Methods: A modified version of discomfort survey was sent via e-mail to surgeons that belong to the Korean Society of Spine Surgery. The survey questionnaires were composed of demographics, factors relating to spine surgery, and MSD. We investigated the common sites of occurrence of MSD and its risk factors. Results: The survey was sent to a total of 420 subjects; of which, 80 subjects (19.0%) responded. About 78.8% of the respondents had MSD for the past year. The common sites of occurrence included the neck (52.5%), back (46.3%), and shoulder (18.8%). The prevalence of pain in the elbow joint/forearm was higher in the group performing a higher frequency of spine surgeries (p=0.033). Moreover, the prevalence of pain in the wrist/hand (p=0.008) and in the back (p=0.042) was higher in those with greater frequency of major surgeries (>10 case/year) as compared with those with lower frequency of major surgeries. Conclusion: As shown, about 78.8% of spine surgeons experienced MSD for the past one year. Its prevalence was higher as compared with the general population. Thus, more attention should be paid to the prevention of MSD among spine surgeons.

자기주도학습 기반 창의성,인성 함양과 진로탐색 체험의 장,『플레잉스쿨』시스템 모형 개발

최성우 ( Seong Woo Choi ),김판수 ( Pan Soo Kim ),박주영 ( Joo Young Park ),김미연 ( Mi Yeon Kim ),강형구 ( Hyoung Gu Kang ),김소윤 ( So Yoon Kim ) 한국교육정보미디어학회(구 한국교육정보방송학회) 2015 교육정보미디어연구 Vol.21 No.4

본 연구의 목적은 최근 교육현장에서 지향하고 있는 교과교육과 놀이, 활동과 정신적 건강, 감성과 체험, 자연과 하이테크가 조화된 자기주도학습의 장인『플레잉스쿨(Playing School』시스템 모형을 개발하는 것이다. 이를 위해 선행연구 및 사례분석을 통해 시스템 모형을 제시하고, 이를 현장에서 운영하기 위한 실행 방안을 구안하였다. 그리고 이 시스템의 현장 적용가능성과 효용성을 알아보기 위해 대도시의 교육지원청 산하 28개 학교를 대상으로 한 블렌디드러닝을 실시하고 설문조사와 면담을 실시하였다. 그리고, 또 다른 대도시의 현직교사를 대상으로 설문을 실시하였으며, 교사와 더불어 추가로 교육부 실무담당자, 학부모를 대상으로 심층면담을 통하여 실행방안의 타당성과 효용성을 분석하였다. 연구결과 개발된 모형은 자기주도학습 능력을 계발하고 향상시키는 전략을 제공하는 SMMIS 모형(최성우, 김판수, 2010)과 직업탐색 및 체험학습을 위한 학습과정, 학습공간, 학습형태, 학습방법, 학습내용을 중심(Singh & Reed, 2001)으로 한 블렌디드러닝 기반 시스템 모형이다. 이 시스템 모형은 동기부여 촉진을 위한 온라인 사전학습과, 학습내용 체화 및 실천을 위한 오프라인 기반 스마트(smart)환경의 체험학습, 그리고 학습내용의 평가 및 성찰을 위한 온라인 사후학습으로 구성되어 있다. The purpose of the study was to develop the『Playing School』system model as a practical field based on self-directed learning which integrates what the Korean domestic education aims; subject education and amusement(play & learning), activity and mental health (art & young dream), emotion and experience (sensitivity & experience), and nature and high-tech (nature & green tech). In order to accomplish the purpose of the study, the researchers designed a system model with the results of literature review and cases analyses, and demonstrated operational on-line programs for practical application. The study implemented a blended learning course at 28 schools of an Educational Branch Office in a big city, and conducted a survey and interviews to examine the validity and availability of implementation of the system model. A survey and the in-depth interviews were conducted with teachers, parents, and government officers of the Ministry of Education. As the result, a revised final system model was suggested. The system is a blended-learning based system model which focuses on both SMMIS model that provides self-directed learning ability improvement strategies along with learning courses for career exploration and experiential learning, learning spaces, learning styles, learning methods, and learning content. The validity and availability of implementation of the system model has been verified.