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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.
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.
반도체 포토공정에서 총 가중작업흐름시간을 최소화하기 위한 스케쥴링 방법론에 관한 연구
최성우(Choi Seong-Woo) 한국산업경영시스템학회 2012 한국산업경영시스템학회지 Vol.35 No.1
This study focuses on the problem of scheduling wafer lots of several recipe(operation condition) types in the photolithography workstation in a semiconductor wafer fabrication facility, and sequence-dependent recipe set up times may be required at the photolithography machines. In addition, a lot is able to be operated at a machine when the reticle(mask) corresponding to the recipe type is set up in the photolithography machine. We suggest various heuristic algorithms, in which developed recipe selection rules and lot selection rules are used to generate reasonable schedules to minimizing the total weighted flowtime. Results of computational tests on randomly generated test problems show that the suggested algorithms outperform a scheduling method used in a real manufacturing system in terms of the total weighted flowtime of the wafer lots with ready times.
Ti-Ni-Hf 고온형상기억합금의 미세조직 및 고온특성에 미치는 합금 조성의 영향
최성우 ( Seong Woo Choi ),이학성 ( Hak Sung Lee ),전영민 ( Yeong Min Jeon ),남태현 ( Tae Hyun Nam ),염종택 ( Jong Taek Yeom ),김성웅 ( Seong Woong Kim ),박찬희 ( Chan Hee Park ),홍재근 ( Jae Keun Hong ),오창석 ( Chang Seok Oh ) 대한금속재료학회(구 대한금속학회) 2015 대한금속·재료학회지 Vol.53 No.3
The effect of Ni and Hf content on the microstructure, phase transformation, and hot workability of Ti-Ni-Hf high-temperature shape memory alloys (SMAs) were investigated. Twelve different Ti-xNi (x=49, 50.2, 50.5, 50.8 at%)-yHf (y=10, 12, 14 at%) SMA ingots were prepared by vacuum arc re-melting, and then analyzed by SEM, DSC, TEM, and XRD after heat treatment. Precipitation behavior was mostly dependent on Ni content rather than Hf content. The effect of homogenization treatment on the particle precipitation and phase transformation behavior was studied. We also found that hot workability was greatly dependent on the solidification structure of the austenite phase. (Received March 2, 2014)
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.
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.