초등 현직교사와 예비교사의 인식론적 신념과 좋은 교사, 좋은 수업, 수업방법 결정요인 비교

오선아(Oh Sun A),이순덕(Lee Soon Deok) 한국교육포럼(아시아태평양교육학회) 2011 韓國敎育論壇 Vol.10 No.1

이 연구의 목적은 초등 현직교사와 예비교사의 인식론적 신념과 좋은 교사, 좋은 수업, 수업방법관에 차이가 있는지를 분석하는 것이다. G시 초등 현직교사 137명과 교육대학교 163명의 학생을 대상으로 설문조사를 했다. 현직교사와 예비교사의 인식론적 신념에는 유의미한 차이가 있었다. 예비교사는 교사에 비해 지식의 가변성, 다양한 지식의 원천, 학습자에 의한 점진적인 학습에 대한 인식론적 신념이 높았다. 교사는 교육경력이 많아질수록 절대적 권위에 의한 확실한 지식과 타고난 능력을 더 믿는 것으로 나타났다. 예비교사는 연령이 높아질수록 지식의 확실성과 학습능력에 대한 신념이 더욱 세련되었다. 현직교사와 예비교사 모두 ‘학생을 이해하고 존중하는 선생님’을 좋은 교사로, ‘학생들에게 참여 기회를 부여하여 지식을 재구성할 수 있는 수업’을 좋은 수업으로 인식했다. 교사와 예비교사 교육에 자신의 인식론적 신념 체계를 이해하고 좋은 교사, 좋은 수업에 대한 비판적 사고를 할 수 있는 프로그램을 제공할 필요가 있다. The purpose of this study was to investigate the relationship between in-service and pre-service teachers' epistemological beliefs(EB), good teacher, good instructional practices and the reason of teaching method selection. Subjects were 137 teachers and 167 students attending university of education in G city. Participants had to fill-out a questionnaire concerning EB, good teachers and good instructional practices. There was a significant difference between in-service and pre-service teachers' EB. Pre-service teachers more believed changeable knowledge, various knowledge sources, progressive learning by learners than in-service teachers. On the other hand, in-service teachers had more prefer diverse teaching methods to pre-service teachers. There were significant differences in good teacher and the reason of teaching method selection. Both groups selected person who are able to understand and respect students as a good teacher. They also believed constructivist learning is a good instructional practices. A job training program and modeling of senior teacher and colleagues had a significant selection on teacher's teaching method selection. Past educational experiences or students teaching training was an important variable to select pre-service teachers' teaching method. These results would provide the necessity of educational program to understand their EB in teacher education.

이동 애드 혹 망에서의 모바일 호스트들에 대한 위치 추적 시스템의 설계 및 구현

오선진(Sun-Jin Oh),윤일(Il Yoon),홍석형(Suk-Hyung Hong),이영철(Young-Chul Lee),김진희(Jin-Hee Kim) 한국멀티미디어학회 2005 한국멀티미디어학회 학술발표논문집 Vol.2005 No.1

외국인 학부생들의 쓰기 효능감과 쓰기 성취도 간의 상관관계 분석

오선경(Oh Sun-Kyung),이아름(Lee Ah-Reum) 우리말학회 2021 우리말연구 Vol.66 No.-

This study aims to reveal the correlation between academic writing self-efficacy and writing achievement of foreign students attending Korean university. The subjects of this study are 32 intermediate learners and 46 advanced learners. The writing self-efficacy survey used a questionnaire of 24 items and writing achievement measured by their final report scores. As a result, there was no significant correlation between the two factors at the intermediate level. At the advanced level, there was a significant positive correlation between the two factors (r=.346, p<.05). There was also a significant positive correlation between them in the content (r=.351, p<.05) & expression (r=.333, p<.05) categories at the advanced level. However, correlation coefficient is low. Based on this result, some suggestions were presented to improve Korean writing skills for academic purposes. 이 연구의 목적은 국내 대학에 재학 중인 외국인 학부생들의 정의적 요인인 학문적 쓰기 효능감과 쓰기 성취도 간의 상관관계를 밝히는 데에 있다. 중급 학습자 32명, 고급 학습자 46명을 대상으로 학문적 쓰기 효능감 검사를 실시하였고, 기말 보고서 평가 점수와의 상관관계를 분석하였다. 그 결과 중급에서는 두 요인 간 유의한 상관관계를 보이지 않았다. 고급에서는 두 요인 간 유의한 정적 상관관계를 보였다(r=.346, p<.05). 또 보고서 평가 범주 중 내용(r=.351, p<.05), 표현(r=.333, p<.05) 범주에서 효능감과 성취도 점수 간의 유의한 정적 상관관계를 보였다. 그러나 상관의 정도는 낮은 편이었다. 이런 결과를 바탕으로 학문 목적의 한국어 쓰기 능력을 향상시키기 위한 수업 방안을 제언하였다.

P2P 망에서의 원활한 미디어 스트리밍을 위한 프레임워크의 설계

오선진(Sun-Jin Oh),이영철(Young-Chul Lee) 한국멀티미디어학회 2007 한국멀티미디어학회 학술발표논문집 Vol.2007 No.2

상향류 생물막공법을 이용한 양어장 순환수의 질산화특성에 관한 연구

오선경,김정숙,강임석,이병헌 ( Sun Kyoung Oh,Jeong Sook Kim,Im Suk Kang,Byung Hun Lee ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.1

The purpose of this study was to investigate the efficiency of water treatment processes using the biofilm in recirculating aquaculture system, to find out the optimum treatment conditions for ammonia removing in recirculating water, and to estimate possibility of reduction the water treatment unit volume in the aquaculture system as maintaining an efficient treatment process. The upflow biofilm process was equipped with two different types of media, such as Saran media and Ceramic media. This study scaled down to the 20% of the original water treatment unit volume, was compared biofilm process using Saran media with using Ceramic media over conditions of 10 cycle and 20 cycle ratio. The experimental results showed that upflow biofilm process using the Ceramic media was appeared to be better for organic removal, whereas, the biofilm process with Saran media was found to be better for ammonia removal. The biofilm process with the Saran media showed above 90% ammonia removal efficiency. When the volume ratio of recirculating water treatment unit to rearing unit was scaled down to the 20% of the original ratio, the ammonia removal efficiency could be maintained to be similar. Therefore, it can be suggested that the treatment unit of the aquaculture recirculating system can be reduced if the upflow biofilm process with the Saran media is used.

임신 오조증의 임상 특성과 분만 결과

오선옥 ( Sun Ok Oh ),박철홍 ( Cheol Hong Park ),신종승 ( Jong Seung Shin ),박은주 ( Eun Joo Park ),박원일 ( Won Il Park ),신정환 ( Jung Hwan Shin ),홍서유 ( Seo Yoo Hong ),이진용 ( Jin Yong Lee ),송태복 ( Tae Bok Song ),서용수 ( Y 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.5

비디오 서버를 위한 예약기반 하이브리드 디스크 대역폭 절감 정책의 설계 및 평가

오선진,이경숙,배인한,Oh, Sun-Jin,Lee, Kyung-Sook,Bae, Ihn-Han 한국정보처리학회 2001 정보처리학회논문지B Vol.8 No.5

주문형 비디오 시스템의 성능에서 핵심적인 문제는 클라이언트 요청들을 만족시키기 위해 요구되는 비디오 서버의 입.출력 대역폭이다. 이는 지연시간을 증가시키는 원인이 되는 중요한 자원이다. 따라서, 공유를 통하여 비디오 서버 입.출력 요청을 감소시키는 일괄처리 및 피기백킹 등의 다양한 방법들이 사용되고 있다. 일괄처리 정책은 같은 객체에 대한 요청들을 묶어서 기억장치 서버에 대한 하나의 입.출력 요청을 만드는 것이고, 피기백킹 정책은 대응하는 입.출력 스트림들을 그룹으로 서비스할 수 있는 하나의 스트림으로 병합하기 위하여 진행중인 요청들의 디스플레이 율을 변경하는 정책이다. 본 논문에서는 인기 있는 비디오에 대한 요청들의 가능한 한 스케쥴링 되도록 비디오 서버의 입.출력 스트림 용량을 비디오 요청 도착율에 따라 동적으로 예약해 둔다. 그리고 일괄처리의 단점인 스트림 요청 지연시간과 피기백킹의 문제점은 디스크 대역폭 낭비 등을 해결하는 예약기반 하이브리드 디스크 대역폭 절감 정책을 제안한다. 제안한 정책의 성능은 시뮬레이션을 통해 기존의 일괄처리와 피기백킹 정책들과 비교 평가한다. 시뮬레이션 결과에 따르면, 예약기반 하이브리드 디스크 대역폭 절감 정책이 기존의 일괄처리나 피기백킹 정책들에 비해 낮은 서비스 이탈확률과 높은 프레임 절약 백분율 그리고 일정한 서비스 평균대기시간을 제공함을 알 수 있다. A Critical issue in the performance of a video-on-demand system is the required I/O bandwidth of the Video server in order to satisfy clients requests, and it is the crucial resource that may cause delay increasingly. Several approaches such as batching and piggybacking are used to reduce the I/O demand on the video server through sharing. Bathing approach is to make single I/O request for storage server by grouping the requests for the same object. Piggybacking is th policy for altering display rates of requests in progress for the same object to merge their corresponding I/O streams into a single stream, and serve it as a group of merged requests. In this paper, we propose a reservation-based hybrid disk bandwidth reduction policy that dynamically reserves the I/O stream capacity of a video server for popular videos according to the loads of video server in order to schedule the requests for popular videos immediately. The performance of the proposed policy is evaluated through simulations, and is compared with that of bathing and piggybacking. As a result, we know that the reservation-based hybrid disk bandwidth reduction policy provides better probability of service, average waithing time and percentage of saving in frames than batching and piggybacking policy.

Down's Syndrome(몽고증)의 세포유전학적 연구

김정훈,오선경,김정구,문신용,이진용,장윤석,Kim, Chung-Hoon,Oh, Sun-Kyung,Kim, Jung-Koo,Moon, Shin-Yong,Lee, Jin-Yong,Chang, Yoon-Seok 대한생식의학회 1986 Clinical and Experimental Reproductive Medicine Vol.13 No.2

The purpose of this study is to investigate the cytogenetic characteristics of Down's syndrome in Korea. For this study, selected were 92 patients who were diagnosed as Down's syndrome by the chromosomal analyses, among 115 patients who were supected of Down's syndrome and referred to the Cytogenetic Laboratory, Institute of Reproductive Medicine and Population, Seoul National University, for 2 years from January 1984 to December 1985. Among 92 patients with Down's syndrome 83 (90.2%) had G-trisomy, 4 (4.3%) had translocation, and 2 (2.2%) had mosaicism of normal and G-trisomic cell lines. Two patients of the remaining 3 had both G-trisomic and translocation, 47, XX, t (1:21) (p32:q22), +21, 47, XX, t (9:11) (q34:q14), +21. The remaining 1 patient had 47, XY, +mar.

예비교사의 인식론적 신념과 문제 익숙성 수준이 비구조화된 문제해결에 미치는 효과

이순덕(Lee Soon Deok),오선아(Oh Sun A) 한국교육포럼 2012 韓國敎育論壇 Vol.11 No.1

The purpose of this study was to investigate the effects of epistemological beliefs(EB) and problem familiarity on ill-structured problem-solving process and achievement. The subjects were 149 pre-service teachers. The results of the study are as follows: First, the higher group of certainty of knowledge and source of knowledge showed more advanced problem solving process and achievement. Especially, they showed excellent performance and high score in solution development and selection. Second, awareness of problem familiarity significantly affected problem solving process consisted of problem representation, solution development and selection, and monitoring and evaluation. Finally, awareness of problem familiarity did not affect problem solving achievement. It is very important to provide education program including epistemological beliefs and problem familiarity in teacher education to improve ill-structured problem solving skills.

Sperm Penetration Assay의 임상적 타당성에 관한 연구

방명걸,오선경,신창재,김정구,문신용,장윤석,이진용,Pang, Myung-Geol,Oh, Sun-Kyung,Shin, Chang-Jae,Kim, Jung-Gu,Moon, Shin-Yong,Chang, Yoon-Seok,Lee, Jin-Yong 대한생식의학회 1993 Clinical and Experimental Reproductive Medicine Vol.20 No.1

The present study was designed to test the validity of the semen analysis(S/A) and the sperm penetration assay(SPA) as a prognostic indicator of male fertility in 123 patients undergoing in vitro fertilization(IVF). We attempted to correlate the traditional semen parameters or the extent of sperm penetration in SPA with the results of human IVF rate or cleavage rate. Poor correlation was found between the results of S/A and human IVF rate(sensitivity, 80.6% ;specificity, 46.7%; positive predictive value, 91.6%;negative predictive value, 25%). Conversely, good correlation was found between the results of SPA and human IVF rate(sensitivity, 100% ; specificity, 80% ;positive predictive value, 97.3% ;negative predictive value, 100%). Our results corroborate the conclusion that SPA can be a valuable tool as a prognostic indicator of male fertilizing ability.