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Power up! cheer up! - 속이 타는 듯한 느낌! 혹시 위궤양?
정명진,Jeong, Myeong-Jin 한국건강관리협회 2015 건강소식 Vol.39 No.9
우리나라는 다른 나라에 비해 위장질환의 유병률은 높은 편이지만 위궤양의 주요원인으로 꼽히는 헬리코박터 감염률이 지속적으로 감소하면서 위궤양 유병률은 줄어들고 있는 추세다. 하지만 안심할 단계는 아니다. 과음, 과식, 흡연 등의 잘못된 생활습관이 여전한 이상, 위궤양의 위험 또한 여전할 수밖에 없기 때문이다.
Pisarenko Harmonic Decomposition에 의한 배경 뇌파 파워 스팩트럼 추정에 관한 연구
정명진,황수용,최갑석,Jeong, Myeong-Jin,Hwang, Su-Yong,Choe, Gap-Seok 대한의용생체공학회 1987 의공학회지 Vol.8 No.1
The power spectrum of background EEG is estimated by the Plsarenko Harmonic Decomposition with the stochastic process whlch consists of the nonhamonic sinus Bid and the white nosie. The estimation results are examined and compared with the results from the maximum entropy spectral extimation, and the optimal order of this from the maximum entropy spectral extimation, and the optimal order of this model can be determined from the eigen value's fluctuation of autocorrelation of background EEG. From the comparing results, this method is possible to estimate the power spectrum of background EEG.
정명진 ( Myeong Jin Jeong ),이명구 ( Myeong Gu Lee ),함은구 ( Eun Gu Ham ) 한국안전학회(구 한국산업안전학회) 2014 한국안전학회지 Vol.29 No.6
Recently buildings are constructed in larger and higher scales and becoming more complex. However from small to largescale buildings and on construction sites there still are fire safety accidents that occur continuously. Therefore this study is aimed to assess of evacuation safety for building construction by use of simulation. On this study, the evacuation times required were estimated for the permissible evacuation times in cases. Fire safety management plans were suggested for building construction.
정명진 ( Myeong-jin Jeong ) 한국고등직업교육학회 2000 한국고등직업교육학회논문집 Vol.1 No.4
Even with today’s computers, a wind tunnel is an essential tool in engineering, both for model tests and basic researches. The objective of this study is to obtain the conceptual design technology of a low speed, multi-purpose, wind tunnel. This study is an elementary step to obtain the knowledge and experience for design of the wind tunnel to be built in the laboratory. The study has been carried out initially by collecting and analyzing the existing wind tunnel design information. As a result, The test section area is 160mm x 160mm with maximum air velocity of 18m/s. The area contraction ratio is 9.8:1 and the power for operating wind tunnel is required as 2.2kw. An experimental work is conducted by varying the wind speed and number of screens used. The flow uniformity in the test section is affected by the numer of screens and the wind speed. The flow uniformity, however, increases as the wind speed increases and the number of screens increases. The boundary layer thickness is confined in the very near wall allowing the effective test section to be about 76%.
동화의 텍스트 구성이 초등 영어 읽기 교육에 미치는 효과에 관한 메타분석
정명진(Jeong Myeong Jin),김정렬(Kim Jeong ryeol) 한국초등영어교육학회 2017 초등영어교육 Vol.23 No.1
This study is to synthesize previous studies of the effects of English story books on improving students language competence. More specifically, this study focuses on the relationships of text organizations with the attained effects by using meta-analysis. Factors considered for the analysis include whether or not the story text includes repeated patterns, predictable text, and visual assistants such as pictures or drawings. 37 researches are finally selected from the initial 638 studies by two rounds of screening for whether or not it is quantitative, comparative, an elementary level, and on the causal relationships of the aforementioned factors with affective and cognitive effects. The findings are: The texts with repeated patterns and predictable texts do not show statistically significant differences from the texts without these patterns and predictability. However, the visual assistants play important roles in creating significant effect size difference from the texts without visual assistants. In addition, teacher modified or created visual assistants are accepted by the students significantly better than the originals in both affective and cognitive domains.
이명구 ( Myeong Gu Lee ),정명진 ( Myeong Jin Jeong ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.8
The Construction accident rate is higher in the small and medium construction site than the large construction site. It is desirableto focus on the small and medium construction site for the disaster prevention activities. The disaster prevention activites for the small andmedium businesses are achieved through the disaster prevention agencies` technical guidance, but it has exposed many problems and itseffectiveness has been questionded a lot. The purpose of this study, it is to provided the system improvement plan that the problem can besolved and to present a plan to improve the effectiveness of the proposed system. Annual business volume of technical guidance projects wereestimated and status of unfulfilled technical guidance have been reported through the comparative evaluation of construction of the domesticconstruction orders in 2008. How to listen to the opinions of experts and the direction of the study was set up.