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이진배,김석주 목포대학교 여성문제연구소 2000 여성연구 Vol.8 No.-
The purpose of this study was to investigate and haing to lights beiefs and opinons about leisure activity of middle shool students in urban and rural communities of Chunnam. Those views specifically rgaus scio-graphic specificity, the pattern of First, most students recognized that leisure activities are for relaxation and stress reduction. It is shown that students in urban areas enjoy more playing computer games while students in rural areas enjoy more watching TV and listening to radio. Second, on weekdays they talk with friends at home and in computer game-rooms, and it is shown that most of them get satisfaction from their leisure activites. They spend their leisure hours during holidays with family members or friends on the street or downtown. Generally, these students are satisfied with their leisure activities. Third, the lack of leisure facilities is very severe in schools (85%) and students felt more equipped leisure facilities are needed. The leisure facilities in our community are less than in other communities. The results also showeas that various leisure facilities and the condition of leisure environments must be improved for middle school students (who are in physical developing pericas to participate in dynamic leisure with more activities. Fourth. The leisure activities students presently participate in are stanic activities for girls, like watching TV, listening to music and radio, and active and dynamic activities for boys such as playing soccer and. Soccer is the most popular activity for boy students and students in rural areas. Te favorite leisure activities in the future are traveling, swimming, hobby activities, shopping, watching plays, and watching movies in that order. Traveling is the most popular future activity and their biggest hope and dream.
신영준,장명덕,배진호,권난주,여상인,이희순,노석구 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2
In this study, we had tried to present a plan for improving the actual conditions of practical utilization of teaching material for 6th grade science developed by Ministry of Education & Human Resources Development and distributed to all elementary schools in Korea. Also we presented ways of better utilization of the teaching material after investigating the actual conditions of practical utilization. A survey was made to investigate and collect all data in the major metropolitan cities, the Kangwon, Chungcheong, Honam, and Kyeongsang area, respectively. We surveyed 316 6th grader teachers to investigate the actual conditions of distribution and utilization of teaching material as a general research. In addition, we surveyed 46 teachers to investigate the organization and content of teaching material as a particular research. The results are as follows. First, the teaching material was not approximately transmitted and kept to 6th grader teachers. Second, the utilization guide was not made. Third, it was reported that the thematic divisions of teaching material was a strong point, but the less detailed experiment manual was a weak point. Fourth, the consideration of content difficulties and simplicity was necessary to improve the material. Fifth, additional items should be included in the introductory presentation, convenience of reorganization, activity material causing learning interest, guidance of substitution experiment, and more concrete notice of experiment activity. Finally, there were positive responses of more than 4.0 point of Likert scale (1 to 5 point scale) in detail investigations of thematic items, which could have possibility that the teaching material was helpful to elementary school science field.
김영희,김정수,김정애,방숙명,배경진,이애경,장은정,정안순,주미경,최나영 경복대학 1998 京福論叢 Vol.2 No.-
교과과정의 조직은 체계적이고 뜻이 있는 순서로 학생들을 가르치기 위해 지식을 어떻게 조직화할 것인지와, 과목들 사이에서 공통된 내용은 통합시켜 중첩되는 일이 없도록 조정할 필요가 있다. 이에 현재 본 대학 간호과에서 운영되었던 97학년도의 17개 전공과목들의 교과과정의 내용을 비교, 분석하여 중복을 줄이며 순차적 지식의 습득을 도모하는 새로운 통합교과과정의 틀을 개발, 제시함으로써 보다 나은 전문직 간호교육이 이루어지도록 하고자 하였다. Most curricula are considered how to teach the student in systematic and meaningful orders. And it is necessary to coordinate the duplicate contents in major subjects in nursing. So this study was designed to set up a new comprehensive curriculum through comparing and ananlyzing each seventeen major subjects in Nursing Department of Kyung-Bok College. Therefore, the purpose of this study is to present the new comprehensive curricula for promoting the efficiency and effectiveness in diploma degree course of nursing education.
A Modeling Approach of Spatially Distributed Defects in a Semiconductor Manufacturing
Suk Joo Bae,In-Jae Jeong,Chang Wook Kang 한국산업경영시스템학회 2005 한국산업경영시스템학회 학술대회 Vol.2005 No.춘계
The need for accurate yield prediction is increasing for estimating productivity and production costs to secure high revenues in the semiconductor industry. Corresponding to this end, we introduce new spatial modeling approaches for spatially clustered defects on an integrated circuit (IC) wafer map. We use spatial location of an IC chip on the wafer as a covariate on corresponding defects count listed in a wafer map. Analysis results indicate that yield prediction can be greatly improved by capturing spatial features of defects. Tyagi and Bayoumi"s (1994) wafer map data are used to illustrate the procedure.
Condition monitoring of a steam turbine generator using wavelet spectrum based control chart
Bae, Suk Joo,Mun, Byeong Min,Chang, Woojin,Vidakovic, Brani Elsevier 2019 Reliability engineering & system safety Vol.184 No.-
<P><B>Abstract</B></P> <P>Condition-based maintenance (CBM) is designed to take maintenance actions only when there is an imminent evidence of failure for a monitoring system. The parameters indicating health status of the system are continuously monitored in CBM. This article proposes a condition monitoring scheme based on energy profiles generated from wavelet spectrum analysis. The energy of time series is represented by a wavelet spectrum in scale representations of signals. After deriving wavelet spectrums using a discrete wavelet transform at pre-specified windows, we aim to monitor the system based on multivariate <I>T</I> <SUP>2</SUP> chart for the parameters in the linear energy profiles. The monitoring scheme is applied to temperature signals measured from a steam turbine generator. The proposed <I>T</I> <SUP>2</SUP> chart based on the energy profiles shows a potential in early detecting the abnormality of a monitoring system which is not clearly detectable in original time scales.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Propose a condition monitoring scheme based on energy profiles generated from wavelet spectrum analysis. </LI> <LI> Monitor the system based on multivariate <I>T</I> <SUP>2</SUP> chart for the parameters in the linear energy profiles. </LI> <LI> The proposed approach is applied to temperature signals measured from a steam turbine generator. </LI> </UL> </P>
Bae, Suk Joo,Kim, Seong-Joon,Park, Jong In,Park, Chan Woong,Lee, Jin-Hwa,Song, Inseob,Lee, Naesung,Kim, Ki-Bum,Park, Jun-Young Elsevier 2012 International journal of hydrogen energy Vol.37 No.12
<P><B>Abstract</B></P><P>To expand commercial applications of polymer electrolyte membrane fuel cells (PEMFCs), the evaluation time for their durability must be shortened. This article provides a straightforward accelerated degradation testing (ADT) procedure for PEMFC for easy and quick implementation of the procedure. The ADT procedure includes statistical modeling of degradation patterns of membrane electrode assemblies (MEAs) in PEMFCs under startup–shutdown cycling conditions. For this purpose, we propose a nonparametric degradation model to describe the nonlinear performance degradation paths of PEMFC MEAs. The analysis results indicate that the nonparametric approach provides more accurate estimates of the observed degradation data than other parametric approaches. Based on the nonparametric degradation model, we suggest a method to predict failure-times under normal operating conditions by estimating the time-scale factor under accelerated operating conditions.</P> <P><B>Highlights</B></P><P>► We provide a straightforward accelerated degradation testing procedure for PEMFC. ► We propose a nonparametric degradation model to describe the nonlinear performance degradation paths of PEMFC. ► We suggest a method to predict failure-times under normal operating conditions by estimating the time-scale factor.</P>