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      • KCI등재

        다층구조방정식을 이용한 동료교사와의 협력정도가 교사 만족도에 미치는 영향 분석

        김나영(金娜英), 변상민(卞相?), 이다경(李多倞), 김지혜(金智惠) 서울대학교 교육연구소 2017 아시아교육연구 Vol.18 No.4

        이 연구에서는 한국교육개발원의 학교교육실태 및 수준 분석 연구 4주기 중학교 데이터를 사용하여 동료교사와의 협력정도가 교사 만족도에 미치는 영향을 고찰하기 위해 다층구조방정식모형 분석을 실시하였다. 구조방정식을 활용한 선행연구에서 공변수 통제가 충분히 이루어지지 않았다는 점을 고려하여 교사 수준(교사 효능감, 최종학력, 행정업무시간, 수업 개선활동 참여, 교사가 지각한 학생들의 학습 태도 등) 및 학교 수준 공변수(지역, 설립유형, 학교 평균 SES, 학교장 지도성, 집단적 직무열의)를 설정하여 분석에 투입하였다. 설정된 모형의 적합도는 비교적 양호하였으며, 이에 따라 도출된 주요 연구 결과는 다음과 같다. 첫째, 교사 및 학교 수준 공변수를 통제하였을 때, 동료교사와의 협력정도가 교사 만족도에 미치는 직접 효과는 통계적으로 유의하였다. 둘째, 동료교사와의 협력정도는 교사 효능감, 동료교사의 직무열의(work engagement) 및 교사 의견 반영 정도(teacher empowerment)를 통해 간접적으로 교사 만족도에 영향을 주는 것으로 나타났다. 셋째, 주요 설명 변수가 교사만족도에 미치는 효과의 크기를 비교할 때, 직접 효과보다는 간접 효과가 더 크게 나타났으며, 구체적으로 동료교사의 직무열의, 교사 효능감, 교사 의견 반영정도 순으로 교사 만족도를 간접적으로 향상시키는 것으로 나타났다. 이러한 결과를 바탕으로 교원 정책에 관한 시사점 및 앞으로의 연구방향에 대해 논의하였다. The purpose of this study was to investigate the effect of co-teachers" cooperative relationship on teacher satisfaction. This study was based on the fourth data from 「Analysis of the Level of School Education and Its Actual condition: Middle School」 designed by KEDI(Korea Educational Development Institute) and used multilevel structural equation modeling(MSEM) to capture the hierarchical structure of the clustered data. Considering the limitations of previous empirical studies using SEM methodology to control the influences of confounding variables, this study included teacher-level and school-level covariates. The research model fit was comparatively acceptable to assess the results for the structural model. The study yielded a number of interesting results. Firstly, after controlling for teacher and school-level variables, the direct effect of co-teachers" cooperative relationship on teacher satisfaction was shown to be statistically significant. Secondly, the indirect effects or the mediating influences of teacher efficacy, co-teachers" work engagement and teacher empowerment in the relationship between co-teachers" cooperative relationship and teacher satisfaction were also statistically significant. Thirdly, results indicated that the magnitude of the indirect effect was larger than that of the direct effect. Specifically, the effect size of indirect effects was shown to be from small to large in the sequence of teacher empowerment, teacher efficacy and co-teachers" work engagement. Based on these findings, the educational implications and future research directions were discussed.

      • KCI등재
      • KCI등재

        A Study on Gender Differences in Korean Students' Foreign Language Learning: Effects of Gender on Oral Proficiency Improvement across Proficiency Levels

        김나영 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.15

        This study explores the effects of gender differences across proficiency levels on foreign language learning among Korean students majoring in IT at a university in Korea. Participants were 204 students (100 males and 104 females) who enrolled in a 16-week class to improve their English oral proficiency in 2017. To investigate the effects of their improvement, the participants took an OPIc test as pre- and post-tests. Interviews were then performed to understand their perceptions of and experiences with foreign language learning. Paired samples t-tests and independent t-tests were administered to examine the changes between the pre- and post-tests and to determine gender differences in foreign language learning. The qualitative data were analyzed using the content analysis method. Findings reveal that foreign language learning in Korea is effective for both genders at all proficiency levels, except for male students at advanced level. No significant gender differences were observed at novice and intermediate levels. However, at advanced level, female students performed better than male students. An analysis of interview results was positively observed although there were some differences by gender. The current study provides insights on how foreign language teachers can help their students according to gender and proficiency.

      • 평화로운 미래는 둘레로 온다 -나희덕, 『야생사과』(창비, 2009)

        김나영 문학동네 2009 문학동네 Vol.16 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

      • KCI등재후보

        活血效能을 가진 한약재 17종의 내피세포 의존성 혈관이완작용에 대한 연구

        김나영,박영수,김동일,이태균,김은영,류미나 대한한방부인과학회 2005 大韓韓方婦人科學會誌 Vol.18 No.1

        The pharmacological effects of medicinal remedies traditionally used in Asian countries for improving the blood circulation were examined on isolated rat thoracic aorta strips in organ baths. Each experimental medicine was consecutively extracted under reflux with water. Of 17 plants, Curcuma longa (CL) having the strongest acute relaxant activity in endothelium-intact arteries, Mucunae caulis (MC), Cirsium pendulum (CP), Rumex longiflius (RL), Paeonia suffruticosa (PS), Curcuma zedoaria (CZ), Scirpus maritimus (SM), Siphonostegia chinensis (SC), Leonurs sibiricus (LS) and Typha orientalis (TO) were showing dose-dependent relaxant activity. Long-term relaxant effects were showed in Curcuma aromatia (CA), MC, CP, RL, PS, Potulacae grandiflorae (PG), CZ, Panax notoginseng (PN), Achyranthes japonica (AJ), CL, SC, Lycoppus lucidus (LL) and Corydalis turtschaninovii (CT). In endothelium-injury test using carbachol, CL, SC, MC, RL and PS which are having the acute vasorelaxing activity and CA and CT which are not showing vasorelaxaing activity were damaged to endothelium. As a result of this study, the possibility that a part of medicinal remedy may contribute to the beneficial effects in blood circulation was proposed, but inter-individual variation has been observed. Also, further studies on the vasorelaxant effects of these remedies are still required.

      • KCI등재후보

        Bromate가 흰쥐의 장기 Glutathione 함량에 미치는 영향

        김나영,강혜옥,이무강,최종원 한국생명과학회 2003 생명과학회지 Vol.13 No.5

        백서에 bromate의 장기간 섭취로 간 및 신장의 glutathion량이 감소되는데, 간과 신장은 유사한 감소양상을 나타냈고, 폐 및 혈액에서는 감소하는 경향은 있었으나 통계적인 유의성은 없었다. Bromate 섭취로$\gamma-glutamyl$-cysteine synthetase와 $\gamma-glutamyl$ transpeptidase 활성이 감소되었다. 따라서 간과 신장의 glutathione 감소로 $\gamma-glutamyl$cysteine synthetase 활성이 감소됨으로서 glutathione 합성저하에 의해 나타난 결과로 생각되고, 폐에서 $\gamma-glutamyl$cysteine synthetase 및 $\gamma-glutamyl$- transpep-tidase 활성에는 별다른 영향이 없었다. 혈액에서는$\gamma-glutamyl$cysteine synthetase와 $\gamma-glutamyl$ transpeptidase 활성 감소로 glutathione의 혈액내로 유입과 타장기로 유출이 모두 저하되어 glutathione량의 변화가 없는 것으로 생각된다. Bromate에 의한 장기내 glutathione량 감소는 유리기 소거기능이 저하되어 bromate에 의해서 생성된 유리기 제거가 미흡할 것으로 생각되므로 bromate 독성의 한 요인이 될 것으로 추측된다. The effects of bromate administration on glutathione were studied in rats. The contents of glutathione in the liver and kidney were significantly decreased but the alteration was not significant in lung and blood by bromate adminstration. The decrease occurred without concomitant increases in oxidized glutathione (GSSG) or in the GSSG/GSH+GSSG ratio. The activities of $\gamma-glutamyl$ cysteine synthetase in the liver and kidney were decreased by bromate administration. $\gamma-Glutamyl$ transpeptidase activities was significantly decreased in the kidney and not significantly decreased in the lung of bromate treated-rats. These results suggest that the decreased synthesis of glutathione by bromate may be an important reason for the decreased level of glutathione in the liver and kidney, thus the decreased glutathione transport would be a factor on the changes of glutathione contents in bromate-treated rats.

      • KCI우수등재

        지방정부의 경쟁이 재정지출에 미치는 영향: 정치적 요인의 조절효과를 중심으로

        김나영 한국행정학회 2020 韓國行政學報 Vol.54 No.3

        본 연구는 비교경쟁(yardstick competition) 이론을 기반으로 지방정부의 지출 결정에 있어서 선거와 관련한 단체장의 정치적 유인 구조와 이웃한 지방정부 지출을 동시에 고려할 경우 어떤 조절 효과를 나타내는지, 즉 비교경쟁으로 인한 지출결정의 상호작용이 지방정부의 지출에 미치는 영향을 분석하였다. 분석결과, 이전 선거에서 경쟁 정도가 심하여 다음 선거 결과가 불확실할 때, 선거가 다가올 때, 단체장이 연임이 가능한 경우에 개발정책과 재분배정책 관련 지출에 있어서 이웃한 지방정부 지출의 영향력이 강해지므로 공간상관성 역시 높아진다는 것을 알 수 있다. 이러한 정치적 유인에 따라 이웃효과가 개발정책과 재분배정책 관련 지출에 미치는 영향력은 달라지지만, 할당정책에서는 정치적 유인이 이웃효과가 지출에 미치는 영향을 조절하는 것은 아니라는 설명이 가능하다. 즉, 정책유형별로 단체장 선거 관련 유인의 조절효과에 차이가 있음을 확인하였다. This study empirically examines the spatial interaction of all local financial expenditures based on the yardstick competition model of Besley and Case (1995) when considering the political incentives of the head of the local government and the expenditure of neighboring local governments at the same time. The results show that the influence of neighboring local government spending related to developmental and redistributive policies will be stronger and spatial correlation will also increase when the competition in previous elections was severe and the result of the next election is uncertain, the timing of the next election comes, and when consecutive terms in a row is possible. While these political incentives affect the impact of the neighborhood's influence on developmental and redistributive policy expenditures, the allocation policy does not moderate the impact of the neighborhood effect on spending. In other words, it was confirmed that spending related to different types of policies differed in its effectiveness as election-related inducements by local government leaders.

      • KCI등재

        Cellular Localization and Translocation of Duplication and Alternative Splicing Variants of Olive Flounder Phospholipase C-δ1

        김나영,김무상,정승희,김명석,조미영,정준기,안상중 한국생명과학회 2017 생명과학회지 Vol.27 No.11

        The purpose of this study was to investigate the cellular characterization of phospholipase C-δ1 in olive flounders (Paralichthys olivaceus). In general, phospholipase C signaling pathways are distributed in nuclei at plasma membranes and in cytoplasms, although the pathways' nuclear localization mechanisms are unclear. P. olivaceus duplicates type-A PoPLC-δ1 (PoPLC-δ1A), which has a high similarity to the human isoform PLC-δ; type-B PoPLC-δ1 (PoPLC-δ1B [Sf]), which has a low similarity to the human isoform PLC-δ and the alternative splice variant PoPLC-δ1B (Lf), which has a nuclear localization signal (NLS) and a nuclear export signal (NES) for nuclear imports and exports, respectively. This study confirmed the effects of the cellular localization and translocation of GFP-tagged PoPLC-δ1A, PoPLC-δ1B (Sf) and PoPLC-δ1B (Lf). It administered treatments of Ca2+ ionophore ionomycin and endoplasmic reticulum (ER)–Ca2+ pump inhibitor thapsigargin to hirame natural-embryo (HINAE) cells. A laser-scanning confocal microscope was used. GFP-tagged PoPLC-δ1A was distributed to the cellular organelles, rather than to the cytoplasms and cytomembranes, when PoPLC-δ1B (Lf) and PoPLC-δ1B (Sf) were localized at the plasma membranes. The treatments of ionomycin and thapsigargin showed the accumulation of PoPLC-δ1A in the nuclei when PoPLC-δ1B (Lf) nucleocytoplasmic shuttling and PoPLC-δ1B (Sf) nucleocytoplasmic shuttling were not observed. The results were the first evidence that PoPLC-δ1A, which contains functional, intact NES sequences, has a main role in nucleocytoplasmic shuttling and translocation in fish.

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