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국내 교사 정체성 연구 동향 분석 : 2000년에서 2020년까지의 연구를 중심으로
김정석(Kim, Jeongseok),심우정(Shim, Woo-jeong) 한국교원교육학회 2021 한국교원교육연구 Vol.38 No.4
이 연구의 목적은 교사 정체성에 관한 국내 연구동향을 알아보고자 함에 있다 이를 위해 2000년부터 2020년까지 한국연구재단 등재지 이상의 학술지 논문과 석 박사학위논문을 합해 총 73편을 대상으로 연구시기, 연구분야, 연구대상, 연구방법, 연구주제에 따라 분석하였다 이 연구의 주요 결과는 다음과 같다 첫째, 교사 정체성 연구는 교육 분야에서 초등교사와 교과 담당 중등교사를 대상으로 진행되었고 2009년 이후 연구대상이 점차 다변화되고 있었다 둘째, 국내 교사 정체성 연구는 대개 질적연구 방법을 활용하고 있으며, 일반적 질적연구와 내러티브 방법이 많은 편이었다 셋째, 교사 정체성 연구는 교사 정체성을 복합적이며 유동하는 것으로 전제하고 교사 정체성의 양상과 특성, 변화 과정 탐색을 연구주제로 삼고 있었다 넷째, 교사 정체성에 영향을 미치는 주요한 영향요인이 ‘동료교사와의 상호작용’, ‘학습자의 반응 및 피드백(관계)’라는 것을 확인할 수 있었고, 교사 정체성이 교사의 전문성 신장을 도모하고 소진을 예방할 수 있는 수단이 될 수 있음이 확인되었다 마지막으로 연구결과의 의의와 시사점을 논의하였다 The purpose of this study is to explore the trends and the themes of research on teacher identity published in South Korea. To this end, a total of 73 research and dissertation papers published to the journals registered at the Korean National Research Foundation during the periods from 2000 through 2020 were reviewed for identifying the overall trends in research methods and scope as well as analyzing major themes. The major findings from the thematic analysis showed that previous research paid attention to groups of teachers who are likely to be outliers and have extraordinary experiences. In Korean teacher identity scholarship, teacher identity has narrowly focused on professional or vocational side of identity, rather than the entirety of individual identity of which sub-part has the profession of teaching. As in the teacher identity research conducted outside the Korean context, Korean research also found the fluid, paradoxical nature of teacher identity that is a continuous process of coherence and incoherence. Based on these findings, the implications and the suggestions for further research were discussed.
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Al-Zn-Mg-Cu계 알루미늄 합금의 열간 균열 특성에 미치는 합금조성의 영향
김지훈 ( Jee Hun Kim ),조재섭 ( Jae Sub Jo ),심우정 ( Woo Jeong Sim ),임항준 ( Hang Joon Im ) 대한금속재료학회(구 대한금속학회) 2012 대한금속·재료학회지 Vol.50 No.9
Hot tearing was the most significant casting defect when the castability evaluation of the Al- Zn-Mg-Cu alloy system was conducted. It was related to the solidification range of the alloy. Therefore, the hot tear susceptibility of the AA7075 alloy, whose solidification range is the widest, was evaluated. The hot tear susceptibility was evaluated by using a mold for a hot tearing test designed to create the condition for the occurrence of hot tear in 8 steps. According to the tearing location and shape, a hot tear susceptibility index (HTS) score was measured. The solidification range of each alloy and hot tear susceptibility was compared and thereafter the microstructure of a near tear defect was observed. As a result, the HTS of the AA7075 alloy was found to be 67. Also, the HTS in relation to a change in Zn, Mg, Cu composition showed a difference of about 6-11% compared to the AA7075 alloy.
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Al-Zn-Mg계 알루미늄 합금의 유동성에 미치는 합금원소의 영향
조재섭 ( Jea Sup Cho ),김지훈 ( Jee Hun Kim ),심우정 ( Woo Jeong Kim ),임항준 ( Hang Joon Im ) 한국주조공학회 2012 한국주조공학회지 Vol.32 No.3
Al-Zn-Mg alloys, being high strength aluminum alloys, have attracted attention as a material of automobile parts that require higher mechanical properties and lightness. Automobile parts with complex shapes are manufactured by low-priced casting method, but Al-Zn-Mg alloys are difficult to cast because of its poor hot cracking, feeding, and fluidity. Thus fluidity experiments on Al-Zn-Mg alloys were conducted for the castability evaluation. The effects of Mg and Zn, representative elements of Al-Zn-Mg alloys, on fluidity were observed. Spiral mold was used for fluidity experiments and the lengths of solidified specimens were measured after melting and gravity casting. Correlation between microstructures and fluidity length based on the alloy composition was considered. According to the experimental results, as the amount of Mg and Zn increased, fluidity decreased. Also, it was confirmed that fluidity change by the variation of Mg composition was greater than that of Zn.
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