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최상길,황방연,김민수,오갑진,이경순,노재섭,Choe, Sang-Gil,Hwang, Bang-Yeon,Kim, Min-Su,Oh, Gap-Jin,Lee, Kyong-Soon,Ro, Jai-Seop 한국생약학회 1998 생약학회지 Vol.29 No.3
In the course of phytochemical studies of Rumex acetosella L. (Polygonaceae), the MeOH extract of the whole plants was fractionated with $CH_2Cl_2$ and $H_2O$, and the $CH_2Cl_2$ layer was fractionated again with 90% MeOH and hexane. Whereas $H_2O$ layer was fractionated with EtOAc and then with n-BuOH again. By repeated column chromatography, compound 1 was isolated from the 90% MeOH fraction, compounds 1, 2, 3, 4 and 5 were from the ethylacetate fraction, and compound 5 was from the n--BuOH fraction. On the basis of physico-chemical, spectroscopic evidences and in comparison with authentic samples, the structures of them were confirmed to emodin, citreorosein, $chrysophanol-8-O-{\beta}-D-glucopyranoside$, luteolin and $luteolin-7-O {\beta}-D-glucopyranoside$.
초등학교에서 에너지의 합리적 사용을 위한 STS 프로그램의 개발과 적용 효과
최상길,김채복,최준섭 韓國實科敎育硏究學會 2002 實科敎育硏究 Vol.8 No.1
The purpose of this study was to develop STS teaching-learning program which focuses on real-life experiences for reasonable energy usage, and to verify how STS teaching-learning program affects the understanding knowledge concerned energy and the attitude towards saving energy. The subjects of this study were students of the 6th grade at an elementary school in Kyong-Ju. They were divided into two groups, an experimental group and a control roup. The developed STS teaching-learning program had been applied to the experimental group. However, the traditional teaching-learning process had been employed to the control group for four weeks. The main results of this study are as follows : (1) The developed STS teaching-learning program consists of following subjects ; energy resources, growing energy consumption, heat-energy transfer, energy and environment, saving energy, efficient usage of electricity and opening ‘ANABADA’ market. (2) In the understanding of knowledge concerned energy, there was no difference between the experimental group and control group. (3) In the attitude toward saving energy, there was a considerable significant difference between he experimental group and control group. However, there was no difference between male and female students, respectively.
개방형 GIS 기반 인터넷 공간 데이터서비스 컴포넌트의 설계 및 구현
최상길,이진규,이종원,김장수,Choi, Sang-Kil,Lee, Jin-Kyu,Lee, Jong-Won,Kim, Jang-Su 한국공간정보학회 1999 개방형지리정보시스템학회 논문지 = Journal of the Korea Open Geogr Vol.1 No.2
웹을 기반으로 하는 인터넷 정보서비스의 급속한 대중화와 더불어 지방자치단체 및 공공기관에서 공간정보 데이터베이스 구축작업이 완료됨에 따라 인터넷을 통한 공간정보 서비스 제공에 대하 새로운 요구가 발생하고 있다. 따라서 뛰어난 공유성, 간편한 접근성, 익숙한 사용자 인터페이스를 제공하는 웹을 이용한 GIS 서비스는 필수적이며, 본 논문은 이를 위한 개방형 GIS 및 컴포넌트 기술을 기반으로 하는 인터넷 기반의 공간정보 서비스를 위한 컴포넌트를 제안한다. 인터넷상에서 웹을 기반으로 하는 공간정보 서비스를 제공하기 위해서는 기존에 구축되어 있는 다양하고 방대한 GIS 서버 및 데이터를 이용할 수 있어야 하며, 방대한 양의 지도 데이터 전송으로 인한 응답시간 지연 문제를 해결해야 한다[6]. 이를 위해 논문에서는 Open GIS Simple Feature for OLE/COM 사양[3]과 OLE DB 사양[4]을 지원하는 데이터 제공자 컴포넌트를 제시하고 이를 기반으로 하여 이미지 기반 및 벡터 기반 이미지 생성 기법을 지원하는 인터넷 서비스 컴포넌트를 제시한다. In accordance with the completion of the spatial database building works in the central and/or local government authorities as well as the rapid popularization of various information services through internet, it is heavily required to provide spatial information services through World Wide Web. To provide a qualified spatial information service, it is crucial to have a Web-based GIS (Geographic Information Service) service system equipped with the publicity, the convenient accessibility, and the easy-to-use user interface. In this paper, we introduce a new component system for Web-based spatial information services based on the OpenGIS Simple Feature specification for OLE/COM[3] and OLE DB specification[4]. The important functionality of a Web-based spatial information service system includes its accessibility of various existing GIS server system and huge databases in addition to the resolution of response-time delay problems caused by transmitting a large amount of digital maps via internet[6]. To cope with these problems, our component system has been designed to access heterogeneous databases in transparent manner and to support vector-based and/or image-based image production techniques for shortening transmission time.