• Fiber Technology and Industry
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• v.10 no.2 s.38
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• pp.132-145
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• 2006

• Electrical & Electronic Materials
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• v.13 no.8
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• pp.7-14
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• 2000

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.18 no.2
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• pp.184-188
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• 1989

• Proceeding of EDISON Challenge
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• 2017.03a
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• pp.468-472
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• 2017

2차원 InSe 단일층에 존재할 수 있는 vacancy defect인 In vacancy, Se vacancy의 원자구조 및 전자구조 특성을 제일원리계산을 이용해 살펴보았다. InSe $5{\times}5$ supercell을 이용하였으며 total energy를 구해 어떤 구조가 가장 안정한지 찾았다. Relax된 결함구조들을 clean InSe와 비교하여 어떤 변화가 있었는지 특징을 분석하였다. 이러한 intrinsic 결함들이 각각 어떤 구조로 relaxation되는지 살펴보고 clean InSe와 비교해보았다. 또한 각 결함구조의 density of states (DOS), projected density of states (PDOS)와 band structure를 clean InSe와 비교해봄으로써 defect state가 어떻게 나타나는지를 찾아보았다.

• Journal of KIISE:Information Networking
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• v.28 no.4
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• pp.631-640
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• 2001

Round robin scheduling discipline, which is a sort of frame-based scheduling, is quite simple and straightforward for handling multiple queues, and by putting a different weight on each queue, a network can offer differentiated services such as different bandwidth, or delay bound. The most typical algorithm among this disciplines is the weighted round robin(WRR). Also, WRR algorithm can be implemented efficiently by dynamic binary scheduling wheel(DBSW) architecture. This paper performs the analysis of the DBSW architecture and compares the results with simulation results. The analysis data and simulation data show that the DBSW structure decreases average buffer length because it is capable of maintaining the allocated weight of each VC correctly.

• Cross-Cultural Studies
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• v.44
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• pp.211-237
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• 2016

This paper seeks to explore the new relationship between music and poetry established in the beginning of the Modern Era. This was a period when reading silently was the dominant culture rather than reading aloud and orality was limited due to the emergence of literacy and print culture. A poet sensitive to the characteristics of the period, $Mallarm{\acute{e}}$ created his own concept of music and new creative principles of poetry from it. We analyze his "Divigation" and letters, in particular, the "Crisis of vers", "Music and Literature", "Mystery in the letters", and "About the book." Firstly, $Mallarm{\acute{e}}$ connects music with the mystery and the sacred: the mystery surrounds the music and the music is oriented with the sacred. The sanctity is that of the human race and has existed within humans since the beginning. Transposing the characteristics of this music to the poetry is his first creative principle of poetry. However, $Mallarm{\acute{e}}$ called music a totality of relationships that exist between objects without reducing the dimension to only the instruments or the sound. His definition is abstract, regarding music as a complete rhythm, the atmosphere and the air. Secondly, we have the question of how to realize music in a poem. As the music is surrounded by the mystery, $Mallarm{\acute{e}}$ can transpose the sacred to a poem in mysterious ways. This leads to his second principle of poetry: make a poem as a structure. In other words, 'musically', based on the disappearance of real objects and the initiative of the poet, he created a structure with only the words. We can create an acoustic structure but $Mallarm{\acute{e}}$ created a visible structure to overcome the incompleteness of the sound of a word in the diffusion of print culture. In this manner, the use of silence as much as sound and the use of visual as much as aural components were introduced in poetry as important motifs and the essentials of creation. This new relationship between poetry and music and the creative principles drawn from it appear to be the areas to which attention should be focused in the research of poetry.

• Korean Journal of Optics and Photonics
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• v.13 no.1
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• pp.38-43
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• 2002

Simple principles of self-imaging in Multi-Mode Interference (MMI) devices are based on the approximation of propagation constants. The analysis of the basic nature of the self-imaging principle reveals the problems of previous optimization methods, and provides a new scheme to optimize the external variables for the reconciliation of approximation problems by considering two different tendencies of approximation effects. Furthermore, the representative mode method is proposed to make the application easy. This optimization method provides an essential method for stable design and fabrication of MMI devices with improved characteristics.

• Annual Conference on Human and Language Technology
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• 2014.10a
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• pp.81-86
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• 2014

한국어 의존 파싱은 문장 내 단어의 지배소를 찾음으로써 문장의 구조적 중의성을 해소하는 작업이다. 지배소 후위 원칙은 단어의 지배소는 자기 자신보다 뒤에 위치한다는 원리로, 한국어 구문분석을 위하여 널리 사용되는 원리이다. 본 연구에서는 한국어 지배소 후위 원리를 의존 파싱을 위한 트랜지션 시스템의 제약 조건으로 적용하여 2가지 트랜지션 시스템을 제안한다. 제안 모델은 기존 트랜지션 시스템 중 널리 사용되는 arc-standard와 arc-eager 알고리즘에 지배소 후위 제약을 적용한 포워드(forward) 기반 트랜지션 시스템과, 트랜지션 시스템의 단점인 에러 전파(error propagation)를 완화시키기 위하여 arc-eager 알고리즘의 lazy-reduce 방식을 적용한 백워드(backward) 기반 트랜지션 시스템이다. 실험은 세종 구구조 말뭉치를 의존구조로 변환하여 실험하였고, 실험 결과 백워드 기반 트랜지션 시스템이 포워드 방식보다 우수한 성능을 보였다. 기존 연구와의 비교를 위하여 기존 연구를 조사하였지만 세부 실험 환경이 서로 달라서 직접적인 비교는 어려웠다. 제안하는 시스템의 최고 성능은 UAS 92.85%, LAS 90.82% 이다.

• Magazine of the Korea Concrete Institute
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• v.9 no.1
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• pp.133-141
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• 1997

This work presents a method of optimum design for reinforced concrete building frames with rectangular cross sections. To overcome difficulties arising from the presence of two materials in one element(concrete and steel) , the principle of divided parameters is adopted. The design variable parameters are divided into two groups - external and internal. The optimization is also divided into external and internal procedure. Several scarxh algorithms are tested to verify their accuracy for the external optimization. This work proposes a new search method, a modified pattern search, and sample problems prove its accuracy and uscf'ulness. The design obtained by this method is an optimum and in full accord with ACI Building Code Ftequirements(ACI'318-89).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.401-402
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• 2012

해양 자원의 개발이 연안에서 심해로 이동하면서 해양플랜트 건조도 또한 심해라는 특수한 상황에서 운용될 수 있도록 건조되고 있다. 여러 가지 운용 시스템 중 Dynamic Positioning(DP) 시스템은 해상에서 해양 구조물을 일정기간동안 원하는 위치를 유지 시켜주는 시스템으로써 다양한 선박 및 해양플랜트에서 사용되고 있다. 이러한 DP 시스템은 기본적으로 GPS를 이용하여 해상에서 그 위치를 유지하고 있지만 그 외에도 다양한 Position Reference 시스템이 사용되고 있다. 이에 본 논문에서는 DP 시스템의 기본적인 원리와 DP Class 구분 그리고 DP 시스템에 사용되는 다양한 Position Reference 시스템에 대해서 개략적으로 다루고자 한다.