• 가정과삶의질연구
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• 제25권5호
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• pp.15-29
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• 2007

The purposes of this study were to examine if there is a relationship between elderly people's anxiety towards death and their reactions to the Star-Wave drawing, and to verify if the Star-Wave drawing was a good enough tool to measure elderly people's degree of death anxiety. The subject for this study were 307 elderly people (male 127, female 180) over 60 years of age with no physical and cognitive damage, who were residing in Geongsan city and attending colleges or welfare centers for the aged. The collected data were analyzed with SPSS WIN(ver. 12.0) program, and factor analysis, correlation analysis, Chi-square test, t-test, one-way ANOVA, and $Scheff\acute{e}$ test were utilized. The results showed that factors showing different levels of anxiety towards death in the Star-Wave drawing were the total harmony of the drawing, drawing style, repetition of wave, size of the star, and location of the star. In particular, the group that drew the Star-Wave drawing with total harmony felt less anxiety towards death than the other group. Therefore, the results of this study suggested a possibility of the Star-Wave drawing to be used as a good tool that could diagnose the elderly's degree of anxiety towards death.

• 한국통신학회논문지
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• 제36권10A호
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• pp.847-851
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• 2011

본 논문에서는 밀리미터파 응용에서 사용 가능한 우수한 성능의 MMIC (Millimeter-wave Monolithic Integrated Circuit) star 혼합기를 구현하였다. MMIC star 혼합기를 구현하기 위하여 PHEMT (pseudomorphic high electron mobility transistor) 공정 기반의 소오스와 드레인 단자를 연결한 쇼트키 (Schottky) 다이오드를 사용하였다. 혼합기의 측정 결과 LO 주파수가 75 GHz이며 전력이 10 dBm 인 경우, 81 GHz에서 86 GHz의 RF 주파수 범위에서 평균 13 dB의 변환손실 특성을 얻었다. RF-LO 격리도 특성은 30 dB 이상의 결과를 얻었으며 약 4 dBm의 P1 dB 특성을 얻었다. 전체 칩의 크기는 0.8 mm ${\times}$ 0.8 mm이다.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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• pp.91-98
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• 2006

This paper aims at giving an overview of the developments researchers at the Department of Civil Engineering, Aalborg University, Denmark (DCE), have been involved in within the field of wave energy utilization in Denmark over the past decade. At first a general introduction is given followed by a more thorough description of three ongoing projects. These are Wave Dragon, Wave Star and Seawave Slot-cone Generator. Common for these projects are that they are being, or will soon be, tested in real sea and have benefited from the Danish Wave Energy Program. The work by the department on these projects involves substantial laboratory testing, numerical simulations and real sea prototype testing.

• 디지털융복합연구
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• 제15권9호
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• pp.201-210
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• 2017

본 연구는 중국소비자를 대상으로 K-POP 특성이 한류 콘텐츠 호감도와 청취의도 및 한국제품 구매의사에 미치는 영향을 알아보았다. 이를 위해 K-POP 특성을 음악적 특성과 스타(가수)특성으로 구분하여 연구를 진행하였다. 연구결과 첫째, K-POP 특성중 음악적 특성과 스타(가수) 특성 모두가 한류 콘텐츠 호감도에 유의미한 영향을 미쳤다. 둘째, K-POP 특성중 음악적 특성과 스타(가수) 특성 모두가 K-POP 청취의도에 유의미한 영향을 미쳤다. 셋째, K-POP 특성중 음악적 특성과 스타(가수) 특성 모두가 한류 콘텐츠를 통한 한국제품 구매의사에 유의미한 영향을 미쳤다. 다만, K-POP 특성중 음악적 특성보다는 스타(가수)특성의 상대적 영향력이 높은 것으로 나타났다. 본 연구결과는 중국소비자를 대상으로 K-POP 소비증진방안을 마련하는데 유용한 자료가 될 것이다.

• 한국콘텐츠학회논문지
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• 제19권5호
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• pp.296-305
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• 2019

한류의 성장과 더불어 팬덤 경제의 중요성이 제기됨에 따라 한류가 가지고 있는 경쟁력을 팬덤의 관점과 더불어 고려할 필요가 있다. 특히 팬덤 현상은 자신이 선호하는 스타를 동일시하고, 팬 커뮤티니에 관련 정보를 적극적으로 획득 및 공유하는 특성을 나타내고 있다. 이에 따라 본 연구에서는 중국, 일본, 베트남 소비자들 대상으로 한국의 국가 이미지가 한류 콘텐츠 이용의도에 미치는 영향관계를 파악하고, 팬덤 동일시의 매개효과를 검정하였다. 실증분석 결과 문화 이미지, 기업 이미지, 제품 이미지는 한류 콘텐츠 이용의도에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 또한, 스타 동일시와 팬 커뮤니티 동일시는 문화 이미지가 한류 콘텐츠 이용의도에 미치는 영향 관계에서 부분매개를 하는 것으로 나타났다. 본 연구 결과는 한류를 국가 이미지 향상을 위한 후광효과 관점이, 아닌 한류의 지속적인 발전을 위한 선행요인임을 검정하고, 팬덤 현상의 매개효과를 실증적으로 검정하였다는 점에서 시사점을 갖는다.

• 천문학회지
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• 제34권4호
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• pp.243-246
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• 2001

We summarize various aspects of the interaction of supernova remnants (SNRs) with the ambient medium. We discuss the evolution' of SNRs in environments sculpted by the progenitor star, and summarize the factors on which this evolution depends. As a specific example, we consider the evolution of the medium around a 35 M$\bigodot$ star, and the interaction of the shock wave with this medium when the star explodes as a SN. We also discuss the interaction of Type Ia SNe with the ambient medium, especially the formation and growth of hydrodynamic instabilities.

• 천문학회보
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• 제44권2호
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• pp.76.2-76.2
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• 2019

Recent observation of the neutron star merger event, GW170817, through both gravitational wave (GW) and electromagnetic wave (EM) observations opened a new way of exploring the universe, namely, multi-messenger astronomy (MMA). One of the keys to the success of MMA is a rapid identification of EM counterpart. We will introduce the strategy for prioritization of GW source host galaxy candidates. Our method relies on recent simulation results regarding plausible properties of GW source host galaxies and the low latency localization map from LIGO/Virgo. We will show the test results for both NS merger and BH merger events using previous events and describe observing strategy with our facilities for GW events during the ongoing LIGO/Virgo O3 run. Finally, we report the result of follow-up observation on, the first neutron star merger event, S190425z, during LIGO/VIrgo O3 run.

• 천문학회보
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• 제45권1호
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• pp.36.3-37
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• 2020

Recent observation of the neutron star merger event, GW170817, through both gravitational wave (GW) and electromagnetic wave (EM) observations opened a new way of exploring the universe, namely, multi-messenger astronomy (MMA). One of the keys to the success of MMA is a rapid identification of EM counterpart. We will introduce GW follow-up observation project in Korea for hunting GW EM counterpart rapidly and its strategy for prioritization of GW source host galaxy candidates. Our method relies on recent simulation results regarding plausible properties of GW source host galaxies and the low latency localization map from LIGO/Virgo. We will show a test result for both binary neutron star merger events using previous event and describe observing strategy with our facilities for GW events during the ongoing LIGO/Virgo O3 run. Finally, we report the results of optical/NIR follow-up observation of GW190425, the first neutron.

• Journal of Power Electronics
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• 제18권6호
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• pp.1697-1707
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• 2018

In this paper, two large current rectifiers are proposed based on two wye-connected autotransformers. The requirements of the ideal large current rectifier are analyzed, and it is concluded that the large current rectifier has a higher power density and a higher energy conversion efficiency when it is made up of two three-phase half-wave rectifiers and a wye-connected autotransformer. According to theoretical analysis results, the two novel wye-connected autotransformers are designed to feed two three-phase half-wave rectifiers. The two autotransformers can generate two groups of three-phase voltages with a 60o phase shifting, and their kVA ratings account for 95% and 80% of the load power, respectively. These values are less than those of a double star rectifier at 30% and 46%. From the input mains and output side, the power quality of the proposed rectifiers is the same as that of the double star rectifier. Some experiments validate the correctness of the theoretical analysis.

• 천문학회보
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• 제19권
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• pp.25.1-25.1
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• 1994