• 월간산업보건
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• s.221
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• pp.28-28
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• 2006

• Proceedings of the Optical Society of Korea Conference
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• 2004.07a
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• pp.202-203
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• 2004

• 월간산업보건
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• s.340
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• pp.56-59
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• 2016

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.316-316
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• 2011

제일원리 계산으로 Fe/Pt (001) 표면의 표면상태도를 계산하고 표면상태도로 부터 얻어진 평형 Fe/Pt (001) 표면구조의 자기이방성에너지를 계산하였음. 계산된 표면상태도로 부터 Fe-rich $L1_2$ 구조와 수직 $L1_0$ 구조가 가장 안정한 표면 Fe/Pt (001) 구조임이 밝혀졌음. 제일원리로 계산 된 두 구조의 자기이방성에너지를 관측하여 두 구조의 자기용이축이 모두 [001] 방향으로 정렬 됨을 확인하였다. 자기이방성에너지가 격자 변화와 표면 형성 중 어떤 원인에 의해 발생하는지 판단하기 위해서 표면구조, 벌크구조, 및 표면구조와 동일한 격자상수를 가진 벌크구조를 비교 하였다. 비교 결과에 의해 자기이방성에너지의 주 원인은 표면 형성임이 밝혀졌으며 이를 좀 더 명확히 하기위해 상태밀도함수를 계산하였다. 상태밀도함수 계산 결과 Fe 원자의 $3d_{z2}$ 오비탈의 페르미 준위 아래에서의 상태가 표면이 형성되면서 증가하는 것을 관측하였으며 이는 [001] 방향으로의 자기이방성을 증가시키는 오비탈이므로 표면 형성에 따른 자기이방성에너지 증가는 Fe 원자의 $3d_{z2}$ 오비탈에 의함이 판명되었다.

• Proceedings of the KIEE Conference
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• 2007.10c
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• pp.3-4
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• 2007

본 논문은 "도시형 자기부상열차 실용화 사업"으로 개발 중인 차량에 있어서 입력전압의 크기(직류 1,500V, 750V)에 따라 추진 및 보조전원시스템의 특성을 비교/검토하여 차량시스템 및 관련 타 시스템에 미치는 영향을 고려한 길과를 보여주고자 한다.

• Journal of Korean Philosophical Society
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• v.105
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• pp.27-47
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• 2008

불살생계를 제1계율로 내세우는 불교는 기본적으로 생명을 해치는 그 어떠한 행위도 용납하지 않는다. 따라서 원칙적인 입장에서는 사신(捨身) 행위에 해당하는 뇌사와 장기이식 등에 부정적인 입장을 견지한다. 그러나 현실적인 측면[적용의 융통주의]을 고려하면서도 본질적인 측면[원칙주의]을 간과하지 않는 불교의 자비와 중도주의적인 입장에 따른다면, 특수한 경우에 한해서 뇌사와 장기이식을 고려할 수도 있을 것이다. 즉 불교는 뇌사와 장기이식을 기본적으로 인정하지는 않지만, 자비의 원칙에 따라 어떤 상황에서는 엄격한 규제를 통한 제한적인 범위 내에서 뇌사와 장기이식을 허용할 수도 있다는 중도적인 입장을 취한다고 할 수 있다.

• Journal of the Korean Magnetics Society
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• v.24 no.3
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• pp.90-96
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• 2014

The magnetic field variation by the permanent magnet fluctuation positioned on a "Chwan" of wrist according to the movement of radial artery was generated. The clip-type pulsimeter equipped with a Hall device sensing magnetic field pulse movement analyzed the characteristics of pulse wave as output signals. The magnetic field curve and pulse waveform simulated by the finite element method were compared and analyzed with each other. Also, the variation of magnetic field distribution one permanent magnet investigated by the fabrication of clip-type pulsimeter simulator. This result suggests that the clip-type pulsimeter can be used the reproducible and efficacious oriental diagnostic medical instrument.

• Journal of the Korea Society of Computer and Information
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• v.18 no.7
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• pp.175-182
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• 2013

The purpose of this study was to analyse the effects of public service motivation on organizational performance and suggest the theoretical and policy implications. For this purpose, this study measured the public service motivation and organizational performance of social welfare center workers, set up the study model to analyze the relationships between the public service motivation and organizational performance, and tested hypothesis through questionnaire analysis. The analytical results show that the public service motivation and organizational performance of social welfare center workers are relatively high on the whole. And attraction to policy making, commitment to public interest, compassion, and self-sacrifice as the elements of public service motivation appear to have significant effects on organizational performance. In this study, some theoretical and policy implications are introduced basing on the analytical results.

• Journal of the Korea Concrete Institute
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• v.20 no.2
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• pp.131-138
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• 2008

Humidity and strain were estimated for understanding the relation between humidity change by self-desiccation and shrinkage in high-performance concrete with low water binder ratio. Internal humidity change and shrinkage strain were about 10%, 4% and $320\times10^{-6}$, $120\times10^{-6}$ respectively on concrete with water binder ratio 0.3, 0.4 and from the results, humidity change and shrinkage represented the strong linear relation regardless of mixture. For specifying the relation on internal humidity change and autogenous shrinkage strain, shrinkage model was established which is driven by capillary pressure in pore water and surface energy in hydrates on the assumption of a single network and extended meniscus in pore system of concrete. This model and experimental results had a similar tendency so it would be concluded that the internal humidity change by self-desiccation in HPC originated in small pores less than 20 nm, therefore controlling plan on autogenous shrinkage might be focused on surface tension of water and degree of saturation in small pore.

• Journal of Korean Philosophical Society
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• v.139
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• pp.213-238
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• 2016

This paper examines how Dasan Jeong Yak-yong developed self-healing and his perspective of happiness during the hardest point of his political and social career. Just after the death of King Jeongjo (正祖, reign. 1766-1800) the arrest and persecution of those who accepted Christian knowledge from the West began. Among them were Jeong's family members and friends. Jeong, who had learned but had not accepted Christianity as a religious belief, was exiled to Ganggin 康津 in southern Jeolla Province where he was to spend the next 18 years. The two things that helped Jeong through his exile were the Book of Changes 易經 and his commitment to the study of Confucian thought, political, and social reforms. His life-long commitment to writing and his progressive understanding of the principle of changes of the universe in the Book of Changes, represented processes of self-healing and cultivation, depriving Jeong of self-pity and enabling him to attain the highest level in self-realization. According to Jeong, there are two kinds of happiness; "secular happiness" (yeolbok 熱福) related to power and wealth, and "pure happiness" (cheongbok 淸福), a free and idyllic life. For Jeong, the latter was more valuable than the former. Jeong believed that life pursing ethical virtues only could bring authentic joy to people. Furthermore, his devotion to the issues of systematic, social reforms was out of his desire to bring the public happiness by "practical learning", silhak 實學.