• Journal of Korean Academy of Nursing
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• v.41 no.5
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• pp.663-672
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• 2011

Purpose: Purpose of this study was to investigate the status of depression in academic high school students and path analysis model for exploring the mediating role of entrapment to depression in relation to academic stress and perceived social support. Methods: Measurements were four reliable questionnaires measuring academic stress, social support, entrapment, and depression. Data were collected from students in 17 high schools in Seoul. Results: Students (n=5,346) completing the questionnaires indicated depression & entrapment from academic stress. Depression was more prevalent in girls, those whose parents' household income was less than two million won, who did not live with father or mother or both due to divorce, separation, or death, and those who smoked or used alcohol. Entrapment was more prevalent in students similar to cases of depression and in seniors. According to the proposed path model, 48.6% of depression was explained by academic stress, social support, and entrapment. The indirect effect of entrapment as a mediator between academic stress and depression was verified and larger than the direct effect of academic stress on depression. Conclusion: Considering levels of depression and entrapment demonstrated by these students, better mental health programs with diverse strategies should be developed for their psychological well-being.

• Journal of the Korean Vacuum Society
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• v.17 no.3
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• pp.183-188
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• 2008

We have studied the chemisorption of oxygen at room temperature on Fe layers deposited on Pt(111) substrates by using core-level X-ray photoelectron spectroscopy. It was found that the oxygen atoms are chemisorbed when the thickness of the Fe layers is not larger than 6 monolayers. Upon post-annealing, it was found that part of the chemisorbed atoms are desorbed at a temperature range 600 - 700 K, after which the intermixing between Fe and Pt atoms occurs. The overall trend of this intermixing was very similar to the Fe/Pt(111) surface without oxygen exposure. The remaining oxygen adatoms, the amount of which is about a half of the total, were found to be eventually desorbed from the surface upon post-annealing at 1000 K. The binding energy of this phase was higher than that of the oxygen atoms desorbed at lower temperatures by 1.3 eV.

• Journal of the Korean Vacuum Society
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• v.16 no.4
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• pp.286-290
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• 2007

We fabricated NiO coated ZnO nanorods using ZnO nanorods grown on a Si substrate. After thermal hydrogenation process of these NiO-ZnO core-shell nanorods, we confirm that Ni nanodots were built up on the surface of ZnO nanorods. Photoluminescence (PL) measurements at T=5 K were made to understand the optical properties of these various nanorods. As samples sequencially transformed into $ZnO{\rightarrow}NiO-ZnO{\rightarrow}Ni$ nanodot-ZnO, PL transition energies and intensities are varied as well. In comparison to pure ZnO nanorod, the acceptor bound exciton ($A^0X$) became the minor peak for NiO-ZnO nanorods. On the other hand, for Ni nanodot-ZnO sample, ($A^0X$) transition peak intensity became the most dominant peak. This is due to the fact that during thermal hydrogenation process, appreciable amounts of Ni and hydrogen ions defused into ZnO nanorod which played as accepters.

• Korean Journal of Materials Research
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• v.8 no.6
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• pp.526-531
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• 1998

A hydride vapor phase epitaxy (HVPE) method was performed to grow the $10~240\mu{m}$ thick GaN films on (111) spinel $MgAl_2O_4$ substrate. The GaN films on $MgAl_2O_4$ substrate revealed a photoluminescence (PL) characteristics of the impurity doped GaN by the out-diffusion and auto-doping of Mg from $MgAl_2O_4$ substrate during GaN growth. The PL spectrum measured at 10K consists of free and bound excitons related recombination transitions and impurity-related donor-acceptor pair recombination and its phonon replicas. However, the deep-level related yellow band emission was not observed. The peak energy of neutral donor bound excitonic emission and the frequency of Raman $E_2$ mode were exponentially decreased with increasing the GaN thicknesses. and the frequency of E, Raman mode was shifted with the relation of $\Delta$$\omega$=3.93$\sigma$($cm^{-1}$/GPa), where l1 (GPa) is the residual strain in the GaN epilayers.

• Women's Health Nursing
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• v.14 no.4
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• pp.239-247
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• 2008

Purpose: The study was designed to examine the relationship of perceived entrapment to anger and depression in adolescent women. Method: Seven hundred sixty-five adolescent women were recruited from two high schools located in Seoul, Korea for a descriptive study. The instruments used were The Entrapment Scale for perceived entrapment, Spielberger's state trait anger expression inventory-Korean version for state anger and trait anger, and The Center for Epidemiology Studies Depression Scale(CES-D) for depression. Results: The score of perceived entrapment significantly correlated with state anger, trait anger and depression. The significant predictors of depression in adolescent women were perceived entrapment, state anger and trait anger explaining 47.6% of the variance in depression. Conclusion: This study showed that perceived entrapment is an important predictor for depression. Therefore, in order to reduce depression in adolescent women, it is necessary to design an intervention program that helps with coping and reduces perceived entrapment.

• Korean Journal of Materials Research
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• v.6 no.5
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• pp.457-461
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• 1996

HVPE(hydride vapor phase epitaxy)법을 이용하여 C(0001)면의 사파이어 기판위에 GaN 박막을 성장하였다. 110$0^{\circ}C$의 온도에서 박막의 성장률은 120$\mu\textrm{m}$/hr이었고, 사파이어 기판과 GaN사이의 격자상수와 열팽창계수차로 인하여 많은 크랙이 존재하였다. 두께가 20$\mu\textrm{m}$인 GaN의 (0002)면에 대한 X-선 회절피크의 반치폭은 576초 이었다. 10K의 온도에서 측정된 광루미네센스 스펙트럼에서는 강한 강도의 속박여기자에 의한 피크(I2)와 약한 강도의 도너-억셉터 쌍 사이의 재결합에 의한 피크가 나타났으며, 깊은 준위로부터의 발광은 검출되지 않았다. GaN 박막의 전기전도형은 n형 이었고, 전자이동도와 캐리어농도는 각각 72$\textrm{cm}^2$/V-sec와 6x1018cm-3이었다.

• Korean Architects
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• s.558
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• pp.150-157
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• 2015

대한건축사협회 50년 동안 제도의 생성과 흐름을 이해하는데 먼저 제도란 무엇인지에 대한 이해가 필요하다. 제도는 규범의 복합체라고 한다. 규범의 내용이 형식화되고 정리되어 공권력을 수반하는 법률에서부터 형식화되지 않은 채 일상생활에서의 막연한 약속과 같은 집단의 도덕적 기준이나 관습에 이르기까지 그 범위는 광범하다. 즉 정치 경제 교육 제도 등에서부터 도덕이나 언어와 같은 것까지 포함한다. 이 제도가 존재함으로써 사회를 구성하는 모든 개인의 행동은 얼마간 틀에 박히고 방향이 부여되기 때문에 사람들을 시행착오의 낭비를 절약하여 큰 불편 없이 어느 정도 자동적으로 행동할 수 있다. 이런 점에서 제도는 사회질서 유지를 그 중요한 기능으로 하는 한편 모든 개인의 자유를 다소나마 규제하고 부자연스럽게 하는 측면도 있다. 모든 개인에 대한 제한이나 속박이 심해져 정상적인 대다수의 개인의 생활요구가 자해되고 억제되는 정도가 지나치게 되면 그 사회의 가치체계나 규범이 흔들리기 시작하며, 마침내는 기존의 제도가 바뀌고 새로운 제도가 생기게 된다고 한다.

• The Transactions of the Korean Institute of Electrical Engineers C
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• v.55 no.4
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• pp.209-212
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• 2006

The electromagnetic effect observed in a BiSrCaCuO superconductor was studied. The electromagnetic properties of a $Ag_2O$ doped BiSrCaCuO superconductor and an undoped superconductor were evaluated to investigate the contribution of the pinning effect. It was confirmed experimentally that a large amount of magnetic flux was trapped in the $Ag_2O$ doped BiSrCaCuO than that in the undoped one, indicating that the pinning centers of magnetic flux are related closely to the occurrence mechanism of magnetic phenomena. It was considered that by adding $Ag_2O$, the area where normal conduction takes place increases and the magnetic flux penetrating through the sample increases. It also was considered that $Ag_2O$ acts to increase pinning centers of magnetic flux.

• The Optical Journal
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• s.142
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• pp.57-64
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• 2012

X선 자유전자 레이저(XFEL:X-ray Free Electron Laser)는 통상의 레이저와 달리 물질에 속박되어 있지 않은 자유전자를 이용해 레이저 증폭을 일으킨다. 특히 펨토초의 펄스형태, 완벽한 결맞음 및 고휘도 등의 특성으로 X선 실험과학분야의 새로운 시대를 예고하는 꿈의 광원장치로 불리고 있다. 일본의 이화학연구소(Rikagaku Kenkyusho) 산하 하리마연구소(Harima Institute)에는 X선 자유전자 레이저 시설인 SACLA(SPring-8 Angstrom Compact free electron Laser)가 존재하며, SACLA의 독특한 설계와 기술은 세계 곳곳에서 건설되고 있는 XFEL 시설의 가이드라인이 되고 있다. 이번호에서는 SACLA 특징, SACLA 위원회와 도달광원 성능, SACLA의 토폰 빔 라인과 광학계 등을 소개한다. 이 원고는 하리마연구소의 이시카와 테츠야(Tetsuya Ishikawa) 소장이 월간 OPTRONICS 2012년 8월호에 기고한 내용으로 그린광학의 유정훈 팀장이 번역에 도움을 주었다.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.143-144
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• 2016

깊은 전통 문화를 지닌 중국 전통 요소들은 줄곧 예술 창작의 발원지였고 사람들에게 잘 알려진 신화, 전설과 고전 명작들을 탄생해냈다.<대성귀래>의 성공은 단지 수많은 애니메이터들의 꿈일 뿐만 아니라 중국 전통 요소들의 재차 발광과 승화이다. <대성귀래>는 중국 고전 <서유기>를 배경으로 영화 전반의 제작에 중국 요소를 활용함과 동시에 사상에 대한 전통 문화의 속박을 깨뜨려 현실 생활과 절묘하게 결합해 대중들에게 전면적이고 새로운 영화 이념을 펼쳐냈다.<대성귀래>를 연구 대상으로 하는 것은 우리가 중국 애니메이션 콘셉트의 발전 추이를 알아가는데 새로운 시각을 제공할 것이다. 본문은 중국 전통 요소인 <대성귀래> 속 배역과 장면 및 배경 음악의 활용에 대한 분석을 통해 <대성귀래>속 중국 요소가 뛰어난 빛을 낸 활용에 대해 연구하였다.