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한국 아동의 서열개념 발달 : Piaget의 이론에 근거하여
이점숙,장용주,홍혜경 연세대학교 생활과학대학 1980 婦學 Vol.12-13 No.-
본 연구의 목적은 한국아동의 서열개념 발달을 Piaget의 이론에 근거하여 검증하는 데 있다. 실험대상으로는 만 4세부터 7세까지의 아동을 남녀 각각 10명씩 무선표집하여 선정하였으며, 본 연구에서 사용한 도구는 Lavatelli에 의해 제작된 서열개념 교육을 위한 것이었다. 실시 방법은 피험자와 연구자 1:1면접을 통해서 하였고 얻어진 자료는 내용분석하여 x^2과 t로 각각 검증하였다. 본 연구는 실험결과를 요약하여 결론을 내리면 다음과 같다. 첫째, 한국 아동들에게도 Piaget가 제시한 서열개념 발달단계와 동일하게 발달한다. 둘째, 서열개념의 발달에서 성별에 따른 차이는 없었다.
이점숙,명현호,전지영,임병선 한국생태학회 2012 Journal of Ecology and Environment Vol.35 No.3
Coastal sand dune systems are particularly fragile and threaten the environment. However, these systems provide fundamental ecosystem services to the nearby urban areas, acting, for example, as protective buffers against erosion. In this paper, we attempt to classify the biotope types of coastal sand dune ecosystems and select an index for the assessment of the conservation value. The types of biotopes are categorized based on the vegetation map; floras are examined in order to research the effects of hinterlands on coastal sand dunes. In addition, a naturalization rate and an urbanization index for each biotope type in hinterlands are analyzed. In the ecosystem of coastal sand dunes, the urbanization index and naturalization rate shows a higher value in sand dunes with areas of road, residential, and idle land in farm villages, rice fields, and fields. On the contrary, a lower value in the urbanization index and naturalization rate is present when typical biotope types, such as sand dune vegetation and natural Pinus thunbergii forests, are widely distributed. Based on these results, urbanization index and naturalization rate should be used as critical indices for the assessment of the ecosystem of costal sand dunes.
이점숙,이강세,임병선,김하송,이승호 군산대학교 기초과학연구소 2000 基礎科學硏究 Vol.15 No.-
The coastal vegetation was classified by the Braun-Blanquet's method and the biomass was investigated at the wetland of Kohung. The vegetation of the study area was classified with 7 coastal communities as follows: Carex scabrifolia community, Suaeda maritime community, Carex kobomugi community, Tetragonia tetragonoides community, Zoysia sinica community, Vitex rotundifolia community and Phragmites communis community. Biomass was highest in Phragmites communis community(2,087g.d.w./㎡), followed by Zoysia sinica community(741g.d.w./㎡), Suaeda maritime community(535g.d.w./㎡), Vitex rotundifolia community(334g.d.w./㎡), Carex kobomugi community(267g.d.w./㎡), Carex scabrifolia community(236g.d.w./㎡) and lowest in Tetragonia tetragonoides community(195g.d.w./㎡)
Zonation and soil factors of salt marsh halophyte communities
이점숙,김종욱,이승호,명현호,이정윤,조장삼 한국생태학회 2016 Journal of Ecology and Environment Vol.40 No.1
Background: The structures and soil factors of Suaeda glauca-Suaeda japonica zonal communities and Phragmites australis-S. japonica zonal communities were studied in salt marshes of west and south coasts of South Korea to provide basic data for coastal wetland conservation and restoration. Results: S. glauca community mean length was 67 m and S. japonica community mean length was 567 m in zonal communities, and P. australis and S. japonica community mean length were 57 m and 191 m in zonal communities. Regarding the electrical conductivity, sodium content, and clay contents in Upnae-ri, Shinan-gun, there were significant differences among zonal communities at significance level of 0.05 for two-sided t test. However, other factors were not significantly different. Conclusions: The results indicate that multiple factors such as electronic conductivity, total nitrogen level, clay, and sodium might play important roles in the formation of zonal plant communities of salt marshes.
웹 기반의 실시간 원격강의를 위한 서버와 클라이언트간의 웹브라우저 동기화
이점숙,이부권,서영건,Lee, Jeom-Suk,Lee, Bu-Gwon,Seo, Yeong-Geon 한국정보처리학회 2001 정보처리학회논문지 A Vol.8 No.1
A general web-based remote lecture system uses video data and audio data to provide synchronize between teacher and students. This system requires high bandwidth, high speed networking, television, compression and computing technologies between server and client for remote lecture over Internet. As a result, this system can decrease an efficiency for lecturing over current Internet. So, this paper proposes a new mechanism calling as ‘Synchronization of WWW browsers between server and client’to cope with above problems and finally pursues low cost needed for real-time remote lecture over Internet. The mechanism means that every browser of teacher and students displays the same page and the action of teacher is transferred to the browser of student. And, this can be implemented by Windows hooking APIs, Memory Mapping, and DLL (Dynamic Link Library) programming technology. This paper points to the design and implementation of LAS (Lecture Assistant Server) and LAC (Lecture Assistant Client) to perform the synchronization between server and client.