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보안이 강화된 사용자 중심 융합형 스마트 워크 시스템 개발
김경철 ( Kyoung-cheol Kim ),김상주 ( Sang-joo Kim ),이정기 ( Jung-ki Lee ),김현철 ( Hyuncheol Kim ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.2
코로나19 확산으로 기업들이 재택근무와 화상회의 등을 시행하며 업무방식이 획기적으로 변화되고 있다. 재택근무를 시행한 직원들은 편하고 쾌적하다는 의견이 다수였지만, 일부 불편함을 호소하기도 했다. 일부 기업은 재택근무 형태가 긍정적이라고 보고 적극 도입을 검토하기 시작했다. 재택근무의 여러 장점 이면에는 스마트폰, 태블릿 등 스마트 기기의 사용 증가로 보안문제점이 심각하게 대두되고 있고, 스마트워크 환경은 클라우드 기반의 실시간 서비스가 그 생태계를 주도하고 있다. 따라서 이 같은 스마트워크 환경에 따른 법제화와 인사시스템 적용, 그리고 정보보호 및 보안 관련 인증을 통한 스마트워크 서비스의 개선이 절실히 필요하다. 본 논문은 기존 글로벌 시스템의 확산에 대응하기 위해 국내 시스템의 낮은 인지도와 품질 문제 해결을 위한 차세대 기술 개발 및 사용성 강화를 제안한다.
김경철(Kim, Kyoung Cheol) 한국영어교과교육학회 2012 영어교과교육 Vol.11 No.1
The purpose of this study was to find the most effective techniques in using the input enhancement of the IWB(Interactive White Board) in the field of CLIL(Content and Language Integrated Learning). This study examined and compared different input enhancement techniques of the IWB using three equal leveled experimental groups. Group 1 used: IWB input enhancement and sound input enhancement with syllable units. Group 2 used: basic input enhancement and sound input enhancement with syllable units. Group 3 used: basic input enhancement. The results showed several points. Firstly, the IWB input enhancement with sound was more effective than other techniques in the subjects of math, science and art. Secondly, the students who participated in the experiment showed more interest in science and math even though they achieved higher scores in art. Thirdly, the students appeared to understand the meaning of the words better than their ability to read the CLIL words. From these results, this study proposes the desirable techniques of using the IWB input enhancement when CLIL subjects are taught in Public Elementary Schools.
초등영어 학습부진학생의 문식력 향상을 위한 전자칠판 입력 강화 콘텐츠의 개발 및 적용
김경철(Kim, Kyoung Cheol),김정렬(Kim, Jeong-ryeol) 한국영어교과교육학회 2013 영어교과교육 Vol.12 No.1
The purpose of this study was to develop and apply IWB (Interactive White Board) contents using input enhancement for elementary English underachievers’ literacy. To do this, the analyses of teachers’ demand, underachievers’ literary test, and authorized textbooks was performed in this study. As the results showed most teachers strongly needed effective materials to teach English underachievers. Underachievers showed that they had a lack of ability perceiving alphabet, phonemes, reading words, and sentences. Also language materials like words and sentences were chosen and used from the authorized textbooks to develop IWB contents. From the analysis the standards of development were established and the contents using input enhancement were developed for underachievers’ literacy. After using the contents with the underachievers the results of both statistics and class observation showed some significant points where IWB contents could improve their English literacy learning and they were highly motivated to participate in the regular English classes.
음식섭취에 따른 좌우(左右) 촌관척(寸關尺) 6부위 맥압 변화 연구
임윤경 ( Yun Kyoung Yim ),강희정 ( Hee Jung Kang ),이병렬 ( Byung Ryul Lee ),양기영 ( Gi Young Yang ),이현 ( Hyun Lee ),김경철 ( Kyung Cheol Kim ) 경락경혈학회 2011 Korean Journal of Acupuncture Vol.28 No.2
Objectives: The purpose of this study is to investigate the effect of food intake on radial pulse amplitude. Methods: Thirty one healthy male subjects participated in this study. Radial pulse was measured using 3 dimensional pulse imaging system (DMP-3000) before, right after, 40 minutes after, 80 minutes after and 120 minutes after food intake. Results: 1. The amplitude of h1 increased significantly right after food intake compared to ``before food intake`` at all 6 measuring points. Later on, it decreased back as time passed, however, even 120 minutes later, it was still higher than ``before food intake`` 2. Pulse energy, which is calculated from pulse waves acquired with five sensors, increased after food intake as well. Conclusions: Food intake exerts an influence on radial pulse amplitude, resulting in increase of h1 and pulse energy.
최우정,이상모,김경철,김판건,류지혁,류순호,Choi, Woo-Jung,Lee, Sang-Mo,Kim, Kyoung-Cheol,Kim, Pan-Gun,Yoo, Ji-Hyeok,Yoo, Sun-Ho 한국토양비료학회 2001 한국토양비료학회지 Vol.34 No.4
유기질비료와 화학비료 시용에 따른 작물체의 질소동위원소비 (${\delta}^{15}N$) 차이 유무를 조사하기 위해 포트 조건에서 돈분 퇴비 (+13.9‰) 와 요소(-2.3‰) 를 시용하여 70일간 재배한 옥수수의 뿌리, 줄기, 잎, 알곡에 대한 ${\delta}^{15}N$ 값을 분석하였고, 동위원소 질량수지 방정식을 이용하여 옥수수 전부위에 대한 ${\delta}^{15}N$ 값을 계산하였다. 옥수수의 ${\delta}^{15}N$값은 토양 질소의 영향과 질소의 형태변환과정에 수반되는 동위원소분할효과에 의해 시용한 퇴비와 요소의 ${\delta}^{15}N$ 값과 차이를 보였다. 옥수수 전부위, 뿌리 및 줄기의 ${\delta}^{15}N$ 값은 요소와 퇴비 시용에 따른 유의성 있는 차이 (p<0.05)를 나타내지 않았지만, 잎과 알곡의 ${\delta}^{15}N$ 값은 각각 퇴비 처리구(+14.3‰, +16.2‰) > 무처리구(+13.2‰, +13.9‰) > 요소-퇴비 혼합처리구(+10.1‰, +12.6‰) 요소 처리구 (+10.1‰, +12.4‰)의 순서로 유의성 있는 차이가 나타났다. 따라서, 본 연구는 시용 질소원의 종류(퇴비 또는 화학비료)를 확인하는데 있어서 작물의 잎 또는 알곡의 ${\delta}^{15}N$ 값 활용 가능성을 제시해주는 것으로 판단되었다. 하지만, 보다 일반적인 결론을 얻기 위해서는 다양한 종류의 토양과 작물에 대한 연구가 요구된다. To study whether N isotope composition (${\delta}^{15}N$) of crop reflects the kind of fertilizer (chemical or organic) applied to field, a pot experiment was conducted. Corn (Zea mays L.) was cultivated under greenhouse conditions for 70 days. Composted pig manure and urea were applied at 0 and 0 (C0U0), at 0 and 300 (COU2), at 300 and 0 (C2U0) and at 150 and $150kg\;N\;ha^{-1}$ (C1U1), respectively. The ${\delta}^{15}N$ values of composted pig manure and urea were + 13.9‰ and -2.3‰, respectively. The ${\delta}^{15}N$ values of whole parts (roots + stems + leaves + grains) were + 12.7, + 12.9, + 14.0 and + 13.0‰ for C0U0, C0U2, C2U0 and C1U1 treatments, and were not significantly affected by the application of isotopically different N sources (P<0.05). However, leaves or grains showed significantly (P<0.05) different ${\delta}^{15}N$ values between treatments. The ${\delta}^{15}N$ values of leaves and grains were + 14.3 and + 16.2‰ for C2U0, +13.2 and +13.9‰ for C0U0, +10.1 and + 12.6‰ for C1U1 and +10.1 and +12.4‰ for C0U2 treatments. The different ${\delta}^{15}N$ values of corn from the values of N sources (compost and urea) applied to soil showed that the ${\delta}^{15}N$ values of corn were affected not only by the isotope composition of N source, but also by N pool mixing and isotope fractionation accompanying N transformation. This study suggests that although the ${\delta}^{15}N$ values of crop are not identical to the ${\delta}^{15}N$ values of N sources applied to fields, the application of isotopically different N sources such as compost and chemical fertilizer may result in qualitative difference in ${\delta}^{15}N$ values of crop.