신축학교 실내공기질이 초등학생들의 인지기능에 미치는 영향

김태섭,김선주,박시영,전만중,김규태,김창윤,정종학,백성옥,사공준 대한산업의학회 2007 대한직업환경의학회지 Vol.19 No.1

목적: 신축초등학교와 대조학교를 선정하여 교실 내 포름알데히드와 TVOCs를 측정하고 컴퓨터 신경행동검사를 이용하여 실내공기 오염물질이 학생들의 인지기능에 미치는 영향을 평가하였다. 방법: 신축초등학교 5학년 71명을 실내공기 오염물질 노출군으로 하고, 개교한지 12년째인 대구시의 일개 초등학교 5학년 2학급 63명을 대조군으로 하여 실내공기 오염물질농도 측정 및 컴퓨터 신경행동검사를 실시하였다. 결과: 신축학교에서 의도적으로 창문을 개방한 학급에서 1교시 포름알데히드 농도는 34.6 ㎍/㎥, 4교시에는 27.3 ㎍/㎥, 창문을 개방하지 않은 학급에서 1교시 80.2 ㎍/㎥, 4교시 127.1 ㎍/㎥, 대조학교에서는 2학급 각각 1교시에 12.6 ㎍/㎥, 7.5 ㎍/㎥, 4교시에 19.8 ㎍/㎥, 25.2 ㎍/㎥였다. TVOCs의 경우 신축학교의 의도적으로 창문을 개방한 학급에서 1교시에 농도는 487.2 ㎍/㎥, 4교시에 428.2 ㎍/㎥, 창문을 개방하지 않은 학급에서 1 교시에 농도는 1,283.5 ㎍/㎥, 4교시에 1,715.4 ㎍/㎥, 대조학교의 경우 2학급에서 각각 1교시에 농도는 240.9 ㎍/㎥, 150.8 ㎍/㎥, 4교시에 농도는 371.9 ㎍/㎥, 448.0 ㎍/㎥였다. 부호숫자 짝짓기의 평균반응시간은 대조학급이 1교시에 2,585 msec에서 4교시에 2,459 msec으로 감소한 반면 신축학교의 창문을 의도적으로 개방한 학급은 2,343 msec에서 2,510 msec으로, 평소대로 수업한 학급은 2,340 msec에서 2,563 msec으로 반응시간이 각각 167 msec, 223 msec 증가하였다. 1교시의 부호숫자 짝짓기 의 반응시간을 100%로 했을 때 창문을 의도적으로 개방 한 학급은 4교시에 5.9% 증가하였고(p<0.01), 평소대로 수업한 학급은8.3% 증가하였다(p<0.01). 반면에 대조학급은 4교시에 5.0% 감소하였다(p<0.01). 결론: 향후 학교의 실내공기질의 안전성 평가는 샘플링 된 공기의 오염수준의 측정뿐만 아니라 학생들의 건강영향도 함께 고려되는 것이 바람직할 것이다. Objectives: Most studies on the indoor air quality of newly built schools have focused only on the number of schools exceeding a standard or on subjective symptoms, such as sneezing, irritated eyes and an irritated nose. However, there has been no report on how poor indoor air quality affects children's academic performance. This study evaluated the effects of indoor air quality on the neurobehavioral performance of elementary school children. Methods: This study measured the indoor air pollutants and compared children's performance, using a computerized neurobehavioral test, between a newly built and a 12-year-old school. In addition, a questionnaire was administered regarding the indoor air quality related symptoms of children in a newly built and a 12-year-old school. Results: In the newly built school, the formaldehyde levels in the 1^(st) and 4^(th) classes with an open window were 34.6 and 27.3 μg/㎥, respectively. The levels in the 1^(st) and 4^(th) classes with the window closed were 80.2 and 127.1 μg/㎥, respectively. In the 12-year-old school, the formaldehyde levels in 1^(st) and 4^(th) class with open and closed window were 12.6 and 7.5 μg/㎥, and 19.8 and 25.2 μg/㎥, respectively. With respect to total volatile organic compounds, the levels in the 1^(st) and 4^(th) classes with the window open in the newly built school were 87.2 and 428.2 μg/㎥, respectively. In the 1^(st) and 4^(th) classes with the window closed, the total volatile organic compounds were 1,283.5 and 1,715.4 μg/㎥, respectively. In the 12-year-old school, the total volatile organic compounds were 240.9 and 150.8 μg/㎥, and 371.9 and 448.0 μg/㎥ in the 1^(st) and 4^(th) classes, respectively. In the case of a newly built school, the performance of the students in the neurobehavioral test in the 4^(th) class with the window closed was 8.3% lower than for those in the 1^(st) class with the window closed, but was only 5.9% lower when the windows were open. There was a statistical significant difference in the total numbers of symptoms between the two schools. Conclusions: These results suggest a proper evaluation of the indoor air quality within schools is required into both the level of contamination and the health effects of these contaminants toward children.

複合 韓藥劑 淸籬滋坎湯의 抗癌效果 및 作用機轉 糾明

Cho, Kyung-Sam,Kim, Si-Young,Park, Jai-Kyung,Choi, Seung-Hoon,Chung, Se-Young,Yoon, Hwi-Joong 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Kyung Sam Cho¹Si Young Kim¹, Jai Kyung Park²,Seung Hoon Choi³,Se Young Chung⁴, Hwi Joong Yoon¹¹College of Medicine, ²East-West Medical Research Institute, ³College of Oriental Medicine, ⁴College of Pharmacology, Kyung Hee University,Seoul, Korea. The Anti-cancer Effect of Oriental Medicine Chung-Ri-Ja-Gam-Tang in the Mouse with Metastatic Lung Cancer. Proceedings of International Symposium on East-West Medicine, Seoul. 231-243, 1999.-The oriental medicine Chung-Ri-Ja-Gam-Tang is an herbal medicine which has been used for pulmonary diseases and known as having immune stimulatory effects. It has been known effective in lung cancer. So we studied the effects and the mechanisms of this herbal medicine it the mouse with metastatic lung cancer. The metastatic lung cancer of the mouse was produced with melnoma cell line(B16BL/6).5×10□/mouse tumor cells were injected intravenously to the CDF1 mouse via tail vein. The mice were divided 4 groups. The first group was treated with 50mg/kg extract of Chung-Ri-Ja-Gam-Tang per oral for 10 days after cancer cell injection, second group treated with saline after cancer cell injection, the third group with medicine without cancer cell, and the last group with saline only. After 10 days treatments some of the mice were scarificed and the lung and spleen was removed. The survival duration, weight change, the number of metastatic cancer nodule of the lung, the NK cell activity, the capacity of cytokines(INF-γ,INF-α,IL-2) production and the proliferation activities of mouse lymphocytes were measured. The surival times of the group 1 mice were longer and the weight loss was less than the group 2 significantly. The number of the metastatic nodule of the lung were decresed in the group 1 than the group 2. The production of INF-γ,was increase in group 2 than group 3 and 4, IL-2 production was increased in group 1 than group 2,3,4 significantly. There was no difference in TNF- α production and proliferation activity of lymphocyte in each group. The NK cell activity was significantly increased in group 1 than group 2,3,4. We conclude that the Chung-Ri-Ja-Gam-Tang has the effect of increasing the NK cell activity of the CDF1 mouse with metastatic lung cancer(B16BL/6). And it is suggested that the increased production of the IL-2 is the mechanisms of enhanced NK cell activity.

호텔기업의 인터넷 웹서비스 이용활성화방안 : 서울지역 특 1급호텔 활용사례 분석

김시중,이웅규 우송대학교 2000 우송대학교 논문집 Vol.5 No.-

To identify the user's evaluation after experiencing Hotel Web sites, two phases has been processed in this article - evaluating Web sites and suggesting the ways of improving Hotel Web sites. Evaluating Web Sites requires skeptical perspective changes form software evaluation viewpoint, where Web site has been treated as just functional tool. However, current issues in Web site demand aesthetics and communication theory as much as software usability and functionality. In the experiment five different Hotel Web sites has been reviewed by users. As a result, seven categories were suggested as a evaluation factors, and out of seven categories of standard exposed in this experiment. It was suggested that standards in that category need to be stabilized for further evaluation.

호텔기업의 경영지표 분석에 관한 연구 : 경북지역 특1급 호텔을 대상으로 the First Class Hotels in Kyungbuk

김시중 우송대학교 부설 산업연구원 2003 산업연구 Vol.5 No.1

The purpose of this study is to work out the standard financial ratio which is the management indicator of 2001 and 2002. The subject are the First Class hotels in Kyungbuk area. The result of this analysis showed that the financial structure of 2001 is better than 2002 in the stability of First Class hotels in Kyungbuk. Meanwhile the financial ratio which is related to the growth and activity showed that it is in much higher level in 2002, comparing to 2001.

한시 비평 용어 연구 : 시화총림에 나타난 작가의 세계관을 중심으로

김시중,구본미 충남대학교 문리과대학 어문연구회 1999 語文硏究 Vol.32 No.-

中國 鄕鎭企業의 成長 要因과 展望

金時中 서울大學校經濟硏究所 1998 經濟論集 Vol.37 No.2

개혁기 중국경제 주역의 하나로 등장한 鄕鎭企業은 農村 工業化를 성공적으로 달성하였으며, 일종의 公有企業의 성격을 지니면서도 경쟁에서 우위를 차지하여 왔다는 독특성으로 인하여 많은 연구의 대상이 되어 왔다. 이 논문은 향진기업이 개혁기 중국의 특수한 여건하에서 한편으로는 시장경제적 주체로서의 성격을 보유하고 다른 한편으로는 말단 지방정부의 지원과 보호를 받을 수 있음으로써 위 두 측면에서의 독특성을 보이면서 급속한 성장을 달성할 수 있었음을 분석하였다. 그러나 중국경제의 市場化가 심화되면서 향진기업의 급성장에 기여하였던 요인들이 점차 약화되고, 이에 따라 향진기업 특히 鄕村集體企業의 성장세가 둔화되고 또한 그 공유제적 특성에 변화가 나타날 것으로 전망한다.

호텔기업 여성종사원의 성차별에 관한 연구

김시중,장호찬 우송대학교 부설 산업연구원 1999 산업연구 Vol.1 No.1

The purpose of this research was to analyze the sexual discrimination level of woman employee in hotel industry. This research was based on a survey. The survey was conducted on 130 individuals who were working in hotels in Seoul. With collected data, regression analysis, T-Test and analysis of variances were utilized using SAS program. The results showed that there were no evidences of sexual disrimination among the individuals' educatination, sexual harassment, discrimination against employment, and workload among the position levels within a corporation. Finally, the analysis showed that there were sexual discrimination in a promotion policy, retirement policy, workload, and employment during employment period. However, there were no evidences of sexual discfrimination in other areas.

觀光情報體系의 開發段階와 課題에 關한 硏究

김시중,이웅규 우송대학교 부설 산업연구원 1999 산업연구 Vol.1 No.2

Measuring the development stages and issues of Tourism Information Systems activity is a difficult task. It has been shown that there are sixth information development stages which have positive influence on perceived utility of tourism information systems. The Waves of informationization have influenced significantly on Tourism Industly' role and Korean tourism policy. Tourism Companies become the important actor in the field of Tourism Information Systems. Subsequently, We have investigated the antecedents of these sixth tourism information systems development stages. Nowadays Tourism Companies confronting strong competition and informationization. In this era, Tourism Companies seek for the possibilities and applications of informationization as a tool for successful use of computer-based information systems(CBIS). The principal findings showed that chief sixth development stages of tourism information systems and issues in computerization leads to more successful tourism information systems use in Tourism Company.

계룡산국립공원 방문자의 관광동기와 만족도에 관한 연구

김시중,김수경 우송대학교 1999 우송대학교 논문집 Vol.4 No.-

The studies objects are to know what is the cause to decide tourist's pleasure and provide the answer about environment analysis and tour problem. Currently, the number of visitors of Kyeryong-Mountain National Park is dramatically decreasing compared to that of last year. The purpose of study is to bring up problems of Kyeryong-Mountain National Park and to find out the solution on increasing the number of visitors. According to this Study, the reason of tourism motivation is "relaxation" and "The desire of escape from now."

지방정부의 관광정보시스템계획 구성방안에 관한 연구

김시중,이웅규 우송대학교 1999 우송대학교 논문집 Vol.4 No.-

The Waves of globalization and localization have influenced significantly on local goverments' role and Korean tourism policy. Local Governments become the important actor in the field of Tourism Information System Planning. Especially, the advent of local autonomy era has strengthened the role of local governments confronting strong competition and informationization. In the era of local autonomy, local governments seek for the possibilities and applications of informationization as a tool for regional economic development and local internationalization. Korean local governments, however, have little experiences and knowledges of Tourism Information System Planning. So it is impossible for local governments to approach to Tourism Information System Planning systematically. In this sense, the study was conducted and attemped to construct the Tourism Information System for guiding local governments to perform informationization.