• Title/Summary/Keyword: 정철(鄭澈)

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A Revision of Evaluation Chart and an Evaluation of Site-Based Environmental Education Programs (체험환경교육 프로그램 보고서 평가틀의 개선 및 프로그램 평가)

  • Park, Tae-Yoon;Noh, Kyung-Im;Jung, Cheol
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.7 no.5
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    • pp.1-11
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    • 2004
  • The purposes of this study are to revise an site-based environmental education(EE) Program evaluation chart and to evaluate site-based EE programs using the chart. For revising the evaluation chart, several elements in the former chart were changed, infused, deleted, integrated, or split. The points of some elements in the former chart were also changed. The revised chart consist of 38 elements in 6 areas: purpose and goal, teaching and learning plan, teaching and learning process, educational effect and programs evaluation, Program characteristic, and program operation. Using the revised chart, the researchers evaluated 159 site-based EE programs, funded by the Korean Ministry of Environment in 2002. The result indicated that the mark of 'teaching and learning plan' area is higher than other areas, while the mark of 'educational effect and programs evaluation' is the lowest. On the basis of evaluation, the researchers offered some recommendations for the Korean site-based EE programs.

기업지원 정보서비스의 품질과 조직특성 요인이 서비스 활용과 기업성과에 미치는 영향에 관한 연구

  • Lee, Cheol-Seung;Go, Il-Sang;Jeong, Cheol
    • 한국경영정보학회:학술대회논문집
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    • 2008.06a
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    • pp.486-492
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    • 2008
  • 이 연구에서는 "민간기업의 정보화에 소요되는 자원을 제공하여 수혜기업의 경영성과와 이를 통한 연관산업의 경쟁력 증대를 도모하는 정보화 분야의 정책적인 기업지원서비스"를 "기업지원 정보 서비스"로 정의하고, 기존 공급자 중심의 사업목표 달성여부의 평가를 위한 평가지표 개발연구에서 벗어나, 중장기적 관점에서 기업지원 정보서비스 활용요인과 성과에 대해 연구하고자 한다. 이를 위해 서비스 활용요인을 기업지원서비스 품질(정보, 서비스, 시스템)과 조직특성(정보기술자원의 성숙도, 조직문화)차원으로, 기업성과 차원을 정보 지향성(Information Orientation)개념과 경영성과 요인으로 구성하여 기업지원 정보서비스의 활용과 기업 성과의 영향관계 살펴보고자 하였다. 실증연구는 산업정보지원센터의 서비스를 활용하고 있는 186개의 기업체 표본을 수집하여, 구조방정식 모형을 통해 분석한 결과 설정한 모든 경로가 통계적으로 유의하게 나타났다. 특히 서비스 품질과 조직문화가 활용수준에 큰 효과를 보이고 있으며, 정보지향성이 경영성과를 매개하는 것으로 나타났다. 연구결과는 정보화 분야의 기업지원 서비스 정책 수립 방향과 개별기업의 전략적 정보 기술 활용을 위한 주요한 시사점을 주고 있다.

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Hopatoprotective Effects of Extracts form Artemisia iwayomogi (한인진 추출물의 간질환모델에 대한 활성)

  • Lee, Soon-Bok;Jeong, Cheol;Jeong, Seong-Hak;Lee, Sun-Mee;Shim, Sung-Bo;Cho, Tai-Soon
    • Biomolecules & Therapeutics
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    • v.5 no.2
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    • pp.194-201
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    • 1997
  • The hepatoprotective activity of six extracts (BE, EE, HH, PS-1, PS-2, KP) from Artimisia iwayomogi was investigated against experimentally produced hepatic damages. Silymarin, DDB and UDCA were used as reference compounds. Treatment with PS-1 extract reduced hepatic demages induced by $CCl_4$, acetaminophen and ANIT but it did not alter ethionine-induced hepatotoxicity In addition, PS-1 extract showed a protective effect against chronic $CCl_4$-induced hepatotoxicity as well as liver regeneration. PS-2 and KP extracts exhibited significant antihepatotoxic effects on D-galactosamine-induced hepatitis. Treatment with EE extract inhibited ethionine-induced fatty liver. These data indicate that the PS-1 extract is the roost hepato-protective constituent and rationalize the traditional use of this plant in hepatobiliary disorders.

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Phototoxic Dermatosis among Coal-tar Pitch Workers (콜타르 피치를 취급하는 근로자의 광독성 피부질환)

  • Jung, Cheol;Lim, Hyun-Sul;Kim, Doo-Hie;Sung, Yeol-Oh
    • Journal of Preventive Medicine and Public Health
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    • v.30 no.1 s.56
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    • pp.145-155
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    • 1997
  • Interview survey and dermatological examination have been performed to investigate the health problems of workers continuously exposed to coal-tar pitch. The phototoxicity of coal-tar pitch was confirmed by the photopatch tests for six healthy adults. The main results are followings; 1. There was no special history of allergic diseases in both the exposed and non-exposed group. 2. The frequency of the phototoxic dermatosis and the coal-tar acne in the exposed group was significantly greate.(p<0.05) than that of the control group. In the exposed group, the phototoxic dermatosis and the coal-tar acne were observed in nine workers(90%) and seven workers(70%), respectively. However, those, disease were not observed in the control group. 3. Five results(83%) were positive to the photopatch test for coal-ta. pitch 48 hours after UVA irradiation. But the lesion was subsiding 72 hours after UVA irradiation. 4. Malignant cancers were not reported among workers ever exposed to coal-tar pitch. In conclusion, it appears that workers exposed to coal-tar pitch have high risks of phototoxic dermatosis and coal-tar acne. A health policy should be provided to prevent phototoxic dermatosis among coal-tar pitch workers. More studies are required to determine malignancy.

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Phytoseiid Mites (Acari: Phytoseiidae) of Pear Orchards Cheonan Area in Korea (천안지역 배 과원에 서식하는 포식성 이리응애류 (응애아강: 이리응애과))

  • Jung, Chul-Ui;Lee, Joon-Ho
    • The Korean Journal of Soil Zoology
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    • v.9 no.1_2
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    • pp.24-28
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    • 2004
  • Predaceous phytoseiid mites can be important components in integrated mite management program including bio-logical control of spider mites. While conducting population study of prey-predator system in pear orchards, 6 predaceous phytoseiids were found. Amblyseius womersleyi, A. eharai, A. kokufuensi and A. finlandicus were mostly found from tree canopy. While A. rademacheri was restricted in ground vegetation, A. makuwa was equally distributed in ground vegetation and tree trunk. Some ecological information for each species was reviewed. Strate-gies for their potential utility in pest management program and future study area were discussed.

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Bacterial Reverse Mutation Test of CP pharmacopunture (세균을 이용한 CP 약침의 복귀돌연변이 시험)

  • Hwang, Ji Hye;Ku, Jaseung;Jung, Chul
    • The Journal of Korean Medicine
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    • v.41 no.3
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    • pp.55-65
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    • 2020
  • Objectives: This study aimed to evaluate the toxicity of CP pharmacopunture using bacterial reverse mutation test. Methods: To determine the mutagenic potential of CP pharmacopunture, histidine requiring Salmonella typhimurium (TA98, TA100, TA1535, and TA1537) and tryptophan requiring Escherichia coli (WP2uvrA, pKM101) strains were used. The negative (normal saline solution) and positive (Sodium azide, 2-Nitrofluorene, 2-Aminoanthracene, 9-Aminoacridine, and 4-Nitroquinoline N-oxide) control groups were used. To determine the dose levels of the main study, a dose range-finding study was conducted. Results: As a results of the dose range-finding study, the growth inhibition by CP pharmacopunture was not evident at any dose levels in the absence and presence of metabolic activation. As a results of the main study, the mean number of revertant colonies was less than twice when compared to the negative control values at all dose levels of the CP pharmacopuncture in the presence and absence of metabolic activation, showing no dose-related increase. In the positive control group, the number of revertant colonies was markedly increased by more than twice when compared to the negative control group. Conclusion: According to the results of this study, CP pharmacopunture did not show any signs of mutagenic potential.

Molecular survey of Dirofilaria immitis in mosquitoes collected from parks the in the Incheon metropolitan city in Korea (인천지역 공원 채집 모기에서 심장사상충 감염도 조사)

  • Jeong, Cheol;Song, Jae-Sung;Kim-Jeon, Myung-Deok;Kim, Kyoung-Ho;Lee, Jung-Goo;Lee, Sung-Mo
    • Korean Journal of Veterinary Service
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    • v.43 no.1
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    • pp.1-6
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    • 2020
  • Unlike previous studies that reported the infection rates of Dirofilaria immitis in companion dogs, D. immitis genes were tested directly on mosquitoes to see how many mosquitoes actually carry larvae. Mosquito samples were collected from six parks in Incheon from March to August 2018. A total of 18,589 mosquitoes was collected, classified by type and then made 575 sample pools based on 50 mosquitoes. The PCR method was used to detect Dirofilaria immitis genes of sample pools. Dirofilaria immitis genes were detected in 7 of the 575 pools, and these positive mosquito samples were collected in 4 out of the 6 parks. The types of detected mosquitoes were Aedes dorsalis and Ochlerotatus koreanus which have been identified to act as a vector for heart worm propagation in Incheon. Based on these results, it was concluded that D. immitis genes were found in mosquitoes in the neighborhood park.

The 1st Extragalactic Workshop for Korean Young Astronomers "We Love Galaxies"

  • Lee, Gwang-Ho;Kim, Suk;Bae, Hyun-Jin;Kang, Yijung;Kim, Minjin;Kim, Eunbin;Lee, Youngdae;Lee, Yunhee;Chung, Chul;Kim, Minbae;Bang, Taeyang;Sohn, Jubee;Lee, Jaehyun
    • The Bulletin of The Korean Astronomical Society
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    • v.39 no.2
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    • pp.121.1-121.1
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    • 2014
  • 2014년 7월 23일부터 25일까지 전라북도 무주에서 제 1회 대학원생 외부은하 워크샵 "We Love Galaxies"를 개최하였습니다. 초청연사 박사 연구원 2명을 포함, 8개 대학 및 기관에서 총 27명이 참석한 이번 워크샵은 외부은하를 연구하는 대학원생들이 서로의 연구를 이해하고, 현대 외부은하 천문학의 문제들을 공유하며, 자유로운 토의를 통해 더 큰 우주를 그릴 수 있는 기회를 마련하는 것을 목적으로 하였습니다. 총 9개의 세션 27개의 구두발표를 통해 은하의 다파장 특성, 형태 분류 및 내부 구조, 주변 환경과 은하 특성과의 관계, 은하 병합 및 진화, 활동성 은하핵 등의 다양한 주제들을 다루었습니다. 본 포스터를 통해 "We Love Galaxies"의 결과 및 성과, 이후 계획에 대해 소개하고자 합니다.

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The Impact of e-Learning System Characteristics on Learner Committment and Satisfaction (e-러닝 시스템 특성이 학습자 몰입과 학습만족에 미치는 영향)

  • Jang, Jung-Ju;Ko, Il-Sang;Jeong, Cheol
    • Journal of Information Technology Applications and Management
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    • v.15 no.1
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    • pp.99-116
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    • 2008
  • This study explores the impacts of e-learning system characteristics on learner committment and satisfaction by surveying the firms utilizing e-learning systems for learning. In the study, we have, first, drawn the key factors and instruments to measure e-learning system characteristics through intensive literature review. Second, we have investigated whether the characteristics contribute to increasing learner's commitment and satisfaction. Finally, we have examined the mediating effect of learner's commitment between the characteristics of e-learning system and learner satisfaction. We have conducted a survey on the employees having experience in using e-learning systems for learning, and collected a total of 93 responses. The results of a statistical analysis show the following: First, expression and interaction affect the learner's commitment. The results indicate that a learner should engage in e-learning and ultimately be more committed on it when there is a coherence in design and organization of learning contents, and when the system offers various multimedia options including audio, sound, image, graphics, etc. Second, leaner's commitment leads to higher learning satisfaction. Finally, our results show that the commitment plays a mediating role between learner characteristics (expression, control, and trust) and learner satisfaction.

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A Study on the Epidemic of Paederus Dermatitis Occurred among Apartment Residents (아파트에서 집단 발생한 페데러스 피부질환에 관한 조사)

  • Lim, Hyun-Sul;Jung, Cheol;Kim, Doo-Hie;Pyun, Sae-Hyun
    • Journal of agricultural medicine and community health
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    • v.21 no.1
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    • pp.13-20
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    • 1996
  • Paederus dermatitis caused by the contact of staphylinid beetles(Paederus fuscipes) body fluid(pederin) is characterized by linear erythematous vesicopustular lesions. An outbreak of dermatitis occurred at apartments located at the river side after rainy season in summer 1994. Authors surveyed 189 cases(94 males and 95 females) from 103 households reported at the apartment office in Kimcheon on September 1994. The results are as follows; 1. The causative agent of skin diseases was identified as Paederus fuscipes. 2. The attack rate of paederus dermatitis was 52.6% by households, and the residents in the middle floors of the apartments were attacked more frequently than those in other floors. All ages were affected. 3. The skin lesions developed by paederus were distributed on face(38.2%), neck(18.5%), shoulder and trunk(11.0%), arm and leg(10.3%), and back(6.6%). In 21 cases(15.4%), skin lesions were developed in multiple sites. 4. The apartments attacked by paederus was located near the sand and damp soil along the bank of the river. The fodder cultivating farm was located near the upper reaches of river, and a rice field and grape garden in the backyard of the apartment.

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