http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
심현진,Jong Chul Lee,Narae Hwang,Byeong-Gon Park 한국천문학회 2019 Journal of The Korean Astronomical Society Vol.52 No.6
We present the results of near-infrared imaging observations of the galaxy overdensity around the z = 1.44 radio-loud active galactic nucleus (AGN) 6CE1100+3505, which was carried out with the purpose of sampling the redshifted Hα emission from the actively star-forming galaxies that could constitute the overdensity. The existence of the structure around this AGN was spectroscopically confirmed by previous grism observations which are however limited to the central region. Using the CH4Off narrow/medium-band and H broad band filters in the Wide Infrared Camera (WIRCam) on the Canada-France-Hawaii Telescope (CFHT), we constructed a sample of objects that show a flux excess in the CH4Off band due to line emission. The emission line flux is ~ 4.9 10¯16 erg s¯1 cm¯2, corresponding to a star formation rate (SFR) of ~ 50M⊙ yr¯1 for galaxies at redshifts z ~ 1.4. None of the galaxies with medium-band flux excess is located within 1Mpc from the central AGN, and there is no evidence that the selected galaxies are associated with the proposed cluster. Along with the star formation quenching near the center that was found from the previous grism observations, the lack of extreme starbursts in the structure suggests that at z ~ 1.4, overdense regions are no longer favorable locations for vigorous star formation.
각크기와 거리에 관한 천문학 수업안 개발: 측정과 모형 적합
심현진 한국현장과학교육학회 2022 현장과학교육 Vol.16 No.3
I introduce a lesson plan on mathematical relation between angular size, physical size, and distance, which would be helpful for understanding distance scale measurement methodology applied in astronomy. The developed lesson plan is focused to enhance the basic inquiry ability: measurement and data expression, and to lead understanding of model fitting used in data analysis. The online document and spreadsheet program is used for collaboration, therefore the lesson plan allows cooperative learning opportunities even with remote classes. An example of applying the developed lesson plan to university undergraduate students is also introduced. Students showed positive attitudes on the cooperative learning, and made suggestions to further improve the activity. The content of the developed lesson plan was introduced to earth science teachers, who were asked to design their own lesson plans applicable to secondary school students. As a result, teachers suggested various lesson plans that can be used either in regular classes or in after school activities at different grade level. Considering this, the lesson plan is expected to be useful as one of the rare hands-on activity with the theme of astronomy that is applicable to various students. 각크기와 실제 크기, 거리 사이의 수학적 관계를 기초로 하여 천문학에서의 거리 추정 수단과 방법론을 이해하는 데에 도움이 될 수 있는 수업안을 개발하였다. 개발한 프로그램은 기초적인 탐구 능력 중 하나인 측정 능력과 데이터의 표현 능력을 배양하고, 분석을 위한 모형 적합에 대한 이해를 높일 수 있도록 구성하였다. 협업을 통해 결과물을 얻을 수 있도록 설계하였는데, 공동 작업 문서를 활용하기 때문에 비대면 수업에서도 협동 학습으로 진행할 수 있다는 장점이 있다. 아울러 해당 프로그램을 대학 저학년 학부생들에게 적용한 실례를 소개한다. 참여한 학생들은 협업에 참여한다는 긍정적인 태도를 보였고 활동의 개선 방향을 제시하는 등 학습 효과가 있었다. 한편 프로그램 내용을 지구과학 전공 교사들에게 소개하여 학교 현장에 적용할 수 있는 수업안을 스스로 설계하도록 안내한 결과, 교사들은 중․고등학교의 정규 교과 수업과 동아리, 방과 후 활동 등 다양한 경우에 적용할 수 있는 수업을 설계하여 제시하였다. 이러한 점으로 미루어 볼 때, 개발된 프로그램은 다양한 수준의 학생들에게 체험형 탐구 활동의 목마름에 대한 갈증을 일부 채워줄 수 있을 것으로 기대된다.
청소년의 휴대폰 의존에 미치는 영향 : 자존감의 조절효과 검정
심현진,이현실 보건의료산업학회 2017 보건의료산업학회지 Vol.11 No.2
Objectives : This study aimed to identify factors of adolescents’ cell-phone dependency using Agnew’s General Strain Theory (GST) and the perspective of adolescents’ micro-systems. A second aim was to verify the moderating effect of self-esteem. Methods : In total, 2,046 students who participated in a study on KCTPS mid. 1 panel 3 Wave by the National Youth Policy Institute were examined in this research. Data were analyzed through descriptive statistics, factor analysis, reliability tests, and hierarchical linear regression using SPSS Ver. 22.0. Results : The strain factors had a positive effect on adolescents’ depression, and depression had a positive effect on cell-phone dependency. In addition, self-esteem had a negative moderating effect between depression and cell-phone dependency. Conclusions : Factors of cell-phone dependency were identified. The findings of the study indicate that an intervention is required to lower strain and depression and to enhance self-esteem among adolescents.
에어컨의 구조 소음 저감을 위한 실내기 모터 브라켓의 설계
심현진,이성진,강태호,이정윤,오재응 대한기계학회 2006 大韓機械學會論文集A Vol.30 No.2
As the economic power is improved and the customer’s demand is hard to please, the noise and vibration is the most important yardstick that can determine the quality of the product. Especially, as the air-conditioners demand increase suddenly, the product of quality and the noise is becoming a decisive factor of determining whether purchase the product or not. Therefore, every manufactory is investing a lot of money and research to cut down the unpleasantness induced from noise and vibration. And they are emphasizing their products difference by advertising a silence very actively. With these reason, the demand of a silent indoor air-conditioner is the essential research filed when the product is developed. In this study, the noise and vibration is visualized in the space and frequency domain by using experimental methods such as operational deflection shape (ODS), modal testing and sound intensity. Also the location of noise source and its characteristic is analyzed in an acoustical point of view to reduce the structure borne noise that come from the fan motor, and the pertinent control method is suggested. Furthermore, the most suitable shape of the motor bracket is suggested by applying FEM and DOE (Design of experiments) in the noise and vibration point a view.
미시체계적관점에서의 청소년 성인매체 몰입에 미치는 영향요인 : 휴대폰 의존의 매개효과 검정
심현진,이희명,이현실 한국학교보건학회 2016 韓國學校保健學會誌 Vol.29 No.2
Purpose: The purpose of this study was to find the factors influencing adolescents’ adult media engagement. The study is based on Agnew’s General Strain Theory (GST) and a micro-systemic perspective. Methods: The study examined 479 middle school freshmen who participated in the fourth wave of the Korean Children & Youth Panel Survey (KCYPS) conducted by National Youth Policy Institute. Data were analyzed through descriptive statistics, factor analysis, and reliability analysis using SPSS 22.0 Ver. Also, hypothesis testing was performed via covariance- based structure equation modeling (CB-SEM) using Amos 21.0 Ver. Results: Strain factors had positive effects on adolescent depression, and depression had a positive effect on adult media engagement. Also, cell-phone dependency had a positive mediation effect between depression and adult media engagement. Conclusion: The study's result identified the factors affecting adult media engagement. Therefore, we suggest intervention programs considering adolescents’ strains, depression and cell-phone dependency to improve their health.