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)

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.

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.

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.

철, 구리, 은 첨착활성탄을 이용한 브롬산염의 제거

최성우(Seong Woo Choi),박승조(Seung Cho Park) 大韓環境工學會 2006 대한환경공학회지 Vol.28 No.2

블레디드 e러닝 기법을 활용한 국제학습공동체 구축에 관한 연구

최성우 ( Seong Woo Choi ) 한국교육정보미디어학회(구 한국교육정보방송학회) 2005 교육정보미디어연구 Vol.11 No.4

300mm 웨이퍼 팹의 포토공정 구역에서 로트 반송규칙과 일정계획에 관한 연구

최성우 ( Seong Woo Choi ),김광석 ( Gwang Suk Kim ),김호성 ( Ho Sung Kim ) 한국경영공학회 2013 한국경영공학회지 Vol.18 No.2

This study treats the operation logics for lot delivery implemented in AMHS(automated material handling system) in a 300mm wafer Fab. An intra-bay of 300mm wafer Fab has multiple side-track buffers and a stocker. Side-track buffer and stocker are temporary storage space in 300mm Fab. That is, before a wafer lot is loaded into a load port of equipment by over-head transporter(OHT), wafer lot waits for the following operations in a stocker or a side-track buffer(STB) corresponding to the intra-bay of equipment. Therefore, in this paper, we developed various lot destination decision rules, delivery priority rules and OHT selection rules. Results of computational simulation on randomly generated test problems show the effectiveness of the above operation logics and delivery strategies.

Heuristics for Scheduling Wafer Lots at the Deposition Workstation in a Semiconductor Wafer Fab

Seong-Woo Choi(최성우),Tae-Kyu Lim(임태규),Yeong-Dae Kim(김영대) 대한산업공학회 2010 대한산업공학회지 Vol.36 No.2

Drawing Process Design and Mechanical Properties Control for High Strengthening of CP Titanium

최성우(Seong Woo Choi),박찬희(Chan Hee Park),이상원(Sang Won Lee),염종택(Jong Taek Yeom),홍재근(Jae Keun Hong) Korean Society for Precision Engineering 2017 한국정밀공학회지 Vol.34 No.2

CP (Commercially Pure) titanium has been widely used in various industries such as in energy plants and bio-materials because of an excellent corrosion resistance and its non-toxicity to the human body. But there are limitations for usage as structural materials due to low strength. The tensile properties of CP titanium could be improved by microstructure refinement such as in a SPD (Severe Plastic Deformation) process. However, high strengthening of CP titanium wire is impossible by SPD processes like ECAP (Equal Channel Angular Pressing), HPT (High-Pressure Torsion), and the ARB (Accumulative Roll Bonding) process. The study purposes are to increase the strength of CP titanium wire by optimization of the cold drawing process and the harmonization with mechanical properties by heat treatments for the next forming process. The optimization process was investigated with regard to the design of drawing dies and the reduction ratio of cross sections. The elongations of high strength CP titanium were controlled by heat treatment.

자기주도학습 기반『플레잉스쿨』프로그램 효과성 연구: 인지와 메타인지전략을 중심으로

최성우 ( Seong Woo Choi ),김판수 ( Pan Soo Kim ),박주영 ( Joo-young Park ),김미연 ( Mi-yeon Kim ),전규태 ( Kyu-tae Jeon ),전민경 ( Min-kyung Jeon ) 한국교육공학회 2017 교육공학연구 Vol.33 No.4

본 연구의 목적은 자기주도학습 기반『플레잉스쿨(Playing School)』프로그램을 초등학생에게 적용했을 때 인지전략과 메타인지 전략에 어떠한 영향을 미치는지를 알아보는데 있다. 이를 위한 구체적인 연구 문제는 다음과 같다. 첫째, 자기주도학습 기반 플레잉스쿨 프로그램은 초등학생의 인지전략 하위요인인 시연, 정교화, 조직화에 어떠한 영향을 미치는가? 둘째, 자기주도 학습 기반 플레잉스쿨 프로그램은 초등학생의 메타인지전략의 하위요인인 계획, 점검, 조절에 어떠한 영향을 미치는가? 셋째, 자기주도학습 플레잉스쿨 프로그램에 대한 초등학생들의 만족도는 어떠한가? 연구대상은 서울 소재 H초등학교 5ㆍ6학년 181명이었다. 프로그램 시작과 종료 시점에 자기주도학습능력 종합검사를 통해 학생들의 인지전략과 메타인지전략을 측정하고 대응표본 t-검정을 실시하였다. 아울러 프로그램 만족도를 조사하였다. 연구결과는 다음과 같다. 첫째, 학생들의 인지전략의 모든 하위요인인 시연, 정교화, 조직화 점수가 통계적으로 유의하게 증가하였다. 둘째, 메타인지전략의 모든 하위요인인 계획, 점검, 조절의 점수가 통계적으로 유의하게 증가하였다. 셋째, 학생들의 프로그램에 대한 만족도는 95%, 앞으로 이 프로그램을 계속 수강하고 싶다는 의견은 96%로 매우 긍정적이었다. 결론적으로, 플레잉스쿨 프로그램은 초등학생들의 인지전략과 메타인지전략의 향상에 도움이 되었으며, 본 연구에서 활용한 학습전략과 프로그램 운영 전략은 특정 교과시간만이 아닌 여러 교과학습 시간에 통합되어 활용될 수 있다면 그 효과는 더욱 커질 것으로 기대된다. The purpose of the study was to examine the effects of the 『Playing School』program applied for elementary school students’ cognitive and metacognitive strategy development in Korea. The research questions were as follows: 1) How do the Playing School program influence on elementary school students’ cognitive strategy including rehearsal, elaboration, and organization ability, 2) How do the Playing School program influence on elementary school students’ metacognitive strategy including planning, monitoring, and regulation ability, and 3) What are the satisfaction degree of the elementary students for the program? The participants of the study were 181 elementary school students in Seoul, Korea. They took self-directed learning ability measurement tests developed by CK Instructional Development Institute of Soongsil University as the pre- and post-test. The study collected participants’ cognitive and metacognitive strategy scores from the tests and used dependent sample t-test for the analysis. The participants’ satisfaction degree was analyzed by descriptive analysis. The research results were as follows. First, the increase of the participants’ cognitive strategies including rehearsal, elaboration, and organization ability were all statistically significant. Secondly, the increase of the participants’ metacognitive strategies including planning, monitoring, and regulation ability were all statistically significant. Finally, the participants’ satisfaction degree was very positive, showing the average from 4.21 to 4.67, and 95% of satisfaction with the program and 96% of intention of taking the follow-up program. In conclusion, The playing school program showed positive effects for development of elementary school students’ cognitive and metacognitive strategies. And we expect that the effects of the program will be more enhanced when the learning strategies and program operation strategies are utilized in other subject matter activities by the classroom teachers.