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이창근,강대일,황채금,Lee, Chang-Keun,Kang, Dae-III,Hwang, Chae-Geum 국립문화재연구소 1985 保存科學硏究 Vol.6 No.-
Atomic absorption spectrophotometer was used for analyzing each 10elements(Cu, Pb, Sn, Zn, Sb, Fe, Ni, Ag, Co and Mn)on 64 Chinese coinsre covered from Shinan seabed sunken ship. The results show that Cu, Pb and Sn were found to be a major elements consisting of coins and its composition ratio was 6 to 2 to 1.The composition of trace elements on coins was classified 3 levels : Sb, Fe and Zn(0.02%-2.2%), Ag, Ni, and Co(50 ppm-5500 ppm) and Mn(Trace). Theam ount of major elements, Cu and Sn were decreased while increased in Pbby the passage of ages (10th - 13th century) in China. There seems to be no systematic compositional change in major elements but content in trace elements was confirmed to increase with age.
이창근,강형태,고성희,Lee, Chang-Keun,Kang, Hyung-Tai,Goh, Sung-Hee 국립문화재연구소 1987 保存科學硏究 Vol.8 No.-
Fifty ancient Korean coins originated in Choson dynasty have been determined for 9 elements such as Sn, Fe, As, Ag, Co, Sb, Ir, Ru and Ni by instrumental neutron activation analysis and for 3 elements such as Cu, Pb, and Zn by atomicalsorption spectrometry. Bronze coins originated in early days of the dynasty contain as major constituents Cu, Pb and Sn approximately in the ratio 90 : 4 : 3, where as, those in latter days contain in the ratio 7 : 2 : 0. Brass coins which had begun in 17century contain as major constituents Cu, Zn and Pb approximately in the ratio 7 : 1: 1. The multivariate date have been analyzed for the relation among elemental contents through the variance-covariance matrix. The data have been fur theranalyzed by a principal component mapping method. As the results training set of 8class have been chosen, based on the spread of sample points in an eigenvector plotand archaeolgical data such as age and the office of minting.
도인(桃仁)이 Endotoxin을 투여한 흰쥐의 혈액에 미치는 영향(影響)
이창근,소경순,정찬길,Lee, Chang-Keun,Soh, Kyeong-Sun,Jeong, Chan-Gil 대한약침학회 2005 Journal of pharmacopuncture Vol.8 No.2
This study was performed to investigate the effects of ${\ulcorner}Persicae\;Semen{\lrcorner}(PS)$ on the blood injected by Endotoxin in rats. The blood was induced by Endotoxin injection into the caudal vein of rats and PS group taken a measurement of RBC, Hb, Hct, Platelet, WBC, ESR, CRP. The results were obtained as follows: 1. RBC, Hb, Hct, Platelet, WBC were increased with statistical significance at PS group as compared with those of the control group. 2. ESR, CRP were decreased with statistical significance at PS group as compared with those of the control group. It is concluded that PS group has significant effects on the blood injected by Endotoxin in rats. Therefore, PS group seems to be applicable to the diseases related to Endotoxin in clinics.
이창근(Chang-Keun Lee),강현철(Hyun-Chul Kang) 한국지방행정학회 2017 한국지방행정학보 (KLAR) Vol.14 No.1
The purpose of this study is to analyze the disparity of the living infrastructure in Gyeonggi province using the decomposition of Gini coefficient. As a result, the living infrastructure in settlement & environment and cultural areas generally needs to approach to the elimination of the disparity within the southern or northern regions of Gyeonggi, respectively. The number of physicians per 1,000 population and the number of elderly leisure welfare facilities per 1,000 population aged 60 or older show the same result. On the other hand, living infrastructures in the settlement & environment sector and medical infrastructure should be expanded in rural areas in Gyeonggi Province. However, the expansion of police officers and firefighters, and the expansion of kindergartens and public libraries are needed more in the southern Gyeonggi area or urban areas in Gyeonggi province. In the future, it will be necessary to try to resolve the disparity between urban areas and rural areas in Gyeonggi province rather than between southern and northern regions of Gyeonggi in terms of eliminating the disparity between regions.
초등학교 국어 교과서의 문법 단원의 문제점과 개선 방안
이창근 ( Lee Chang-keun ) 청람어문교육학회(구 청람어문학회) 2017 청람어문교육 Vol.0 No.64
본 연구는 국어과 교과서에서 문제점이 많다는 지적을 받는 단원이 주로 문법 성취 기준이 반영된 단원이었는데, 그 이유가 무엇인지를 밝혀 보려는 데서 시작한 연구이다. 그 이유는 문법 영역이 다른 영역과는 다른 특성이 있는데 그 특성을 단원 구성에 반영하지 못한 것이라는 점을 알게 되었다. 문법 영역이 가진 특성은 문법 영역의 내용 중 일부는 국어 사용 기능에 이미 포함되어 있고, 다른 일부는 문법 영역 독자적인 성격을 가진다는 점이다. 이 두 가지 특성은 통합 단원을 구성할 때 각각 다른 모습으로 드러나야 하는데 그렇지 못함을 문제점으로 정리하였고 그 문제점을 해결하기 위한 방안으로 국어사용 기능에 포함된 내용은 별도의 교재로 구성하는 방안을 제안하였고, 문법 영역 독자적인 내용은 학습의 목적을 분명히 할 것을 제안하였다. 본 연구의 제안이 향후 국어과 교과서 개발에 적으나마 기여할 수 있기를 기대한다. The purpose of this study is to clarify the problems of the grammar unit of Korean Language Textbooks in elementary school. And suggests improvement plans. The problems are that the characteristics of the grammar area are not reflected in the unit structure. The characteristics of the grammar domain are that some of the contents of the grammatical domain are already included in the function of using the Korean language and some of them have the original character of the grammar domain. These two characteristics should be presented differently when constructing the integrated unit. But it did not work. To solve the problem, a method of constructing the contents included in the Korean language use function as a separate textbook was proposed, And that the original content of the grammar area should clarify the purpose of the learning. I hope that this proposal will contribute to the development of Korean Language textbooks in the future.
이창근 ( Chang Keun Lee ) 한국문법교육학회 2010 문법 교육 Vol.12 No.-
The purpose of this study is to propose the teaching contents of sentence writing in elementary school. For this, I examined concept of sentence and sentence writing. And I examined importance of sentence writing. As a result of investigation about curriculum and text book, I found contents of sentence writing is not systematic. Contents of sentence writing include constituent of sentence, word order, punctuation marks, concord, classes of sentence, extension/reduction of sentence etc. Among these, word order, punctuation marks, concord, classes of sentence are included frequently. Contents of sentence writing are decreased gradually. In this paper, I ordered contents of sentence writing, and I added new contents of sentence writing. It is very important to teaching sentence writing in elementary school.
초등학교 국어 교과서 내용의 문제점 및 재구성의 실제 - 국어 지식 영역을 중심으로 -
이창근(Lee Chang-keun) 한국어문교육학회 2005 어문학교육 Vol.31 No.-
Teachers who work in elementary school have a lot of business; therefore, the contents of the textbook must be accurate. Grammatical errors in pronunciation, words, and constituents of the sentences which have been found in the textbook were examined here. This study has corrected Korean textbook of the elementary school because there are lots of errors. I hope that this study is useful for teachers.