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소집단 과학실험활동에서의 의사소통이 유아의 언어능력에 미치는 영향
오영희(Yong-Hee Oh),정현주(Hyun-Ju Jeong),김희선(Hee-Sun Kim),신명숙(Myeong-Sook Sin),심지은(Ji-En Sim),이상란(Sang-Lan Lee),최선희(Sun-Hee Chio),홍연홍(Youn-Hong Hong),황혜정(Hea-Jing Hwang) 중앙대학교 한국교육문제연구소 2010 한국교육문제연구 Vol.28 No.2
본 연구는 소집단 과학실험활동에서의 또래들 간 의사소통 과정이 유아의 언어능력에 미치는 영향을 분석하는데 목적이 있다. 본 연구대상은 유치원에 재원중인 실험집단 14명, 비교집단 14명의 총 28명이었으며 평균 월령은 61.37개월이었다. 실험집단은 7명씩 2개의 소집단으로 구성되어 10주 동안 1주에 1회씩 총 10회에 걸쳐 과학실험활동을 처치하였으며, 비교집단은 생활중심 대집단 과학활동을 실시하였다. 유아의 언어능력은 ‘언어능력 검사’ 도구를 사용하여 연구자료를 수집하였으며, 수집된 자료는 ANCOVA를 통해 소집단 과학실험활동에서의 의사소통의 효과를 분석하였다. 연구결과, 실험집단 유아들의 언어표현력 중 단어 수, 문장 수, 내용일치 점수가 비교집단 유아들의 점수보다 유의미하게 높은 것으로 나타났다. 또한 언어이해력의 이야기 듣고 질문에 답하기(Ⅰ-Ⅱ), 이야기 듣고 적절한 그림그리기, 이야기 듣고 그림 순서대로 놓기에서도 실험집단 유아들의 점수가 비교집단 유아들의 점수보다 유의미하게 높은 것으로 밝혀졌다. 결론적으로 본 연구를 통해 소집단 과학실험활동에서의 의사소통은 유아의 언어 표현력과 이해력 발달 즉 언어능력을 증진시켜 줄 수 있는 교수학습 방법임이 밝혀졌다. The purpose of this study is to examine the effect of Social Communication in Small Group Scientific Experiment activity on Young Children's Linguistic Ability. The participants of this study were 28 of five-year-old young children(experimental group 14, control group 14) on kindergarten located in D City in two groups of six each. This study was conducted once a week for 10 weeks. While the experimental group was engaged in 10 Scientific Experiment activity, the control group was engaged in Scientific activity around life. The Young children's Linguistic Ability test(Jang,1961) consists of vocabulary, linguistic understanding and linguistic expressiveness, but we used linguistic expressiveness and linguistic understanding except vocabulary. The results of this study are as follows. First, Social Communication in Small Group Scientific have a positive effect on linguistic expressiveness development of Young Children's Linguistic Ability. Second, Social Communication in Small Group Scientific Experiment activity have a positive effect on linguistic understanding development. In conclusion, Social Communication in Small Group Scientific Experiment activity have a positive effect on Young Children's Linguistic Ability.
이민규,주창식,윤태경,채용곤,이동환,오영희 한국환경과학회 1998 한국환경과학회지 Vol.7 No.1
Ion exchange performance to remove nitrate in water was studied using commercially available strong base anion exchange resin of Cl^- type in the batch and continuous column reactors. The performance was tested using the effluent concentration histories for continuous column or equilibrium concentrations for batch reactor as a function of time until resins were exhausted or reached ionic equilibrium between resin and solution. Anion exchange resin used in this study was more effective than activated carbon or zeolite for nitrate removal. With large resin amount or low initial concentration, nitrate removal characteristics for a typical gel-type resin was increased. On considering the relation between the breakthrough capacity and nitrate concentration of the influent, the use of anion exchange resin were suitable for the higher order water treatment. The nitrate removal of above 90% could be possible until the effluent of above 650 BV was passed to the column. Thus, the commercially available strong base anion exchange resin of Cl^- type used in this study could be effectively used as economic material for treatment of the groundwater. The breakthrough curves showed the sequence of resin selectivity as SO_4^2- > NO_3, > NO^2- > HCO_3^-. The results of this study could be scaled up and used as a design tool for the water purification system of the real groundwater and surface water treatment processes.