유아 영어교육에 대한 교사의 인식 조사

김경철(Kim Kyoung-Chul),홍정선(Hong Jeong-Sun) 한국어린이미디어학회 2002 어린이미디어연구 Vol.1 No.-

본 연구는 유치원에서의 영어교육 실시와 적합한 영어교육 방법에 대한 유치원 교사의 인식과 현재 유치원에서의 영어교육 실시현황을 알아봄으로써 유아교육과 유아 영어교육이 앞으로 나아가야 할 방향을 설정하는 데 기초 자료를 제공하는 것이 목적이다. 서울ㆍ경기 지역의 공사립 유치원에 근무하는 유치원 교사 114명을 대상으로 질문지를 통해 조사하였다. 연구 결과, 유아 영어교육은 시대적 요구와 흐름에 따라 실시되어야 하며, 올바른 실시를 위해 준비가 되어야 한다고 인식하였다. 조사된 기관의 과반수 이상의 유치원에서 유아 영어교육을 실시하고 있었으며, 대부분 사립유치원이 실시하고 있는 것으로 조사되었다. 또한 적합한 유아 영어교육은 한국인 영어 교사가 담당하여, 다른 영역의 수업과 유사하게 실시되어야 한다고 인식하고 있었다. The purpose of this study was to suggest the basic information of which Early childhood Education and English Education in Kidergarten should advance by investigating teachers' awareness and practice of English Education in Kindergarten. This study examined the results of the survey which was done by 114 public and private kindergarten teachers in Seoul and Kyoung-gi province. As a result of the study, Kindergarten teachers recognized that English Education in Kidergarten should be carried out keeping the pace with needs and trends of the time and be prepared for its right practice. More than a half of the kindergartens which was investigated carried out English Education and most of them was private kindergarten. And teachers recognized that appropriate English Education in Kindergarten should be carried out similarly to the activities of other domains by Korean teacher.

신입생 실태조사

홍순모,장경원,허재홍 한국체육대학교 학생생활연구소 1998 學生生活硏究 Vol.- No.4

법량질 표면의 탈회 및 재광화 후 EPMA (electron probe micro-analysis)를 이용한 칼슘, 인, 불소 변화의 정량적 분석

홍경식,허복,이찬영,금기연 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.5

The aim of this in vitro study was to analyze the composition of human tooth enamel in terms of there components, Ca, P, and F after demineralization and remineralization in acid buffer solution. A total of 8 human premolars without any defects and cracks were selected and buccal and lingual sides of the teeth were cleaned with an ultrasonic device and pumice without fluoride. 5×5mm windows were opened, and other areas were completely covered with 3-coats of nail varnish to prevent from being in contact with demineralized and remineralized solutions. After demineralization process, each tooth was sectioned into two slices, highly polished one of them withγ-alumina, and then analyzed the composition of the demineralized tooth with EPMA(electron probe micro-analyzer) . The ocher slices were put into the remineralized solution for 10 days, polished, and analyzed in the same manner. These data were statistically analyzed with one sample t-test(p<0.05) . The results were as follows. 1. Normal tooth enamel consists of 49.76% Ca, 39.80% P, and 0.28% F. 2. After demineralization, percentage of Ca and P ratio were decreased by about 5.57 and 5.07% respectively. Percentage of F ratio was also decreased by about 0.01%, which was not statistically significant. 3. After remineralization, percentage of Ca, P increased about by 4.47 and 4.35% respectively. Percentage of F decreased by about 0.01%, which was not statistically significant. In conclusion, remineralized solution used in our study has the potential to induce the uptake the Ca and P into the pore sites of the demineralized enamel. But, in the oral cavity, there were rapid temperature change, organic matrix that inhibits the movement of the ions, and limitation of continuous contact with this remineralized solution. Therefore, further in vivo study is necessary.

핀형 열교환기를 적용한 자동차용 공조시스템의 성능특성에 관한 연구

홍경한,하옥남 조선대학교 에너지.자원신기술연구소 2003 에너지·자원신기술연구소 논문지 Vol.25 No.2

Fin-type heat exchanger has been tested in order to replace the heat exchanger of P.F-type which is now used in automobile air conditioner system. The comparative characteristics performance test and data analysis showed the following conclusion. Evaporator and condenser capacities and COP changed as the compressor speed, outdoor air temperature and air rate changed, which much influenced the air conditioner system. COP decreased as the outdoor air temperature goes up and compressor speed increases and the COP of Fin-type increased by 14% compared which taht of P.F-type. Comparative experiment showed that the Fin-type proved to be better than the P.F-type in overall performance. It is concluded that Fin-type is more efficient in terms of energy saving and engine power enhancement. The Fin-type is expected to be more favorable in near future.

蓄熱用 TMA 包接化合物의 熱物性에 關한 實驗硏究(II)

홍경한,한영옥,하옥남,김진흥 조선대학교 에너지.자원신기술연구소 1997 에너지·자원신기술연구소 논문지 Vol.19 No.2

This paper presents the test-tube experimental results of thermal properties of TMA clathrate compounds for latent heat storage applications. The results are ; TMA 25wt% clathrate compounds among the clathrate for various concentration, was found to have the most superior thermal property and when the heat source was -5℃, regarding the COP of refrigerator, 1) Phase change temperature was 5.3%. 2) Subcooling was 6.3℃. The subcooling of TMA clathrate decreased according to the temperature of decreasing heat source 3) Specific heat was 4.5kJ/kgK. 4) The latent heat of TMA 25wt% clathrate was the maximum 252.8kJ/kg. As subcooling can be lowered to 0.3℃, when the heat source is -15℃, continual study is needed to reduce the subcooling.

프리드리히 실러의 <군도> 연구

홍경호 漢陽大學校 人文科學大學 1990 人文論叢 Vol.20 No.-

자동차 공조용 핀형 열교환기의 성능특성에 관한 연구

홍경한,전상신,이승재,박찬수,권일욱,김재열,김병철,하옥남 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4

Fin-tube type(Fin-type) heat exchanger has been tested in order to replace the heat exchanger of parallel flow type(P.F-type) which is now widly used in automobile air conditioning system. The following conclusions are drawn by the comparison of the characteristics of the heat exchangers. Evaporator and condenser capacities and COP(Coefficience of performance) were varied as with the compressor speed, outdoor air temperature and air flow rate changed, which much influenced on the characteristics of the air conditioning system. Evaporator and condenser capacities were increased with increasing compressor speed and outdoor air temperature. Evaporator and condenser pressures of Fin- type were decreased by 7% and 5% respectively compared with those of P.F-type. The COP of Fin-type was decreased with increasing outdoor air temperature and compressor speed. The COP of P.F-type was decreased by 14% compared with that of Fin-type.

알긴 첨가형 고분자 블랜드의 특성과 Pot Test

홍장후,신현진,김운겸,강경묵 서울産業大學校 1999 논문집 Vol.49 No.2

PVA/Algin blend films were prepared by solution blending method for the purpose of useful biodegradable polymer. Characteristics properties of blend films such as DSC, Elongation, Tensile strength and Morphological changes by SEM were determined. Tensile strength and Elongation were rapidly reduced as increasing the blend ratio of Algin. Blend films were found that phase separation was occured as more than 25wt% increasing the blend ratio of Algin. Blend films were observed to be less partially compatibility than 10wt% increasing the blend ratio of Algin by DSC, mechanical properties and SEM Also, Blend films at the laboratory soil test(Pot Test) were completely degraded in months with four kinds of soils by microganisms.

우축뇌더환에서 우측가법적계수함수와 Gabriel Filter에 대하여

洪慶和 弘益大學校 1991 弘大論叢 Vol.23 No.2

Let R be a right moetherian ring with unit element 1. We prove that for any additive rank function ?? the set b??(??)={A≤R??|??(R/bcl-A)=0} is a Gabriel filter and R satisties the desending chain condition for b??-closed right idaal. and we show that of ??=∑K?? ??,where P runs though the set of mimimal primes of R, then ∧(b??(??))=∑??min(1,k) ??(M).

영어과 교육용 모의수업 모형 연구

홍경선 제주교육대학교 초등교육연구소 2002 초등교육연구 Vol.7 No.-