• Journal of the Society of Naval Architects of Korea
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• v.28 no.1
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• pp.139-149
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• 1991

In this paper, an efficient method for the ultimate longitudinal strength analysis of the double skin hull girder is presented by using idealized structural unit method. Idealized plate element subjected to biaxial load is developed taking account of initial deflection and welding residual stress. Interaction effect between local and global buckling in the whole structure is also taken into consideration. The reserve strength factor and reliability index for the example 40K double skin product oil carrier are evacuated against the ultimate longitudinal strength. It is concluded that the prudent method seems to be useful in the sense that the computing time required is very short while giving the reasonable solution.

• Journal of the Korean Society of Propulsion Engineers
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• v.13 no.2
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• pp.54-63
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• 2009

Large eddy simulation was conducted for flow development in a chamber with wall injection which simulates the cold flow in an idealized hybrid rocket motor. It was found that a peculiar timescale, roughly corresponding to St~0.5, resides in the flowfield resulting from the interaction between the main oxidizer and wall injected flows. However, the fact that this time characteristics is absent in the temperature field in the vicinity of the wall indicates that even a small regression rate renders the passive scalar, such as temperature, dissimilar to the velocity field. This implies that a classical approach, which assumes that constant turbulent Prandtl number, should be replaced by a more sophisticated turbulence models to accurately predict the temperature field in the hybrid motor.

• Cross-Cultural Studies
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• v.19
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• pp.101-126
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• 2010

Narcissism is a pathological phenomenon and narcissistic subject always needs to put itself on the top and has interest in nothing but its own determination. The protagonist of Adversary by ?mmanuel Carr?re does pay careful attention to what others are thinking of him while he does not distinguish difference between object of love and himself. So he can be allegedly narcissistic subject. And it can be said that the behaviors of Mary in the movie Under the sand by Ozon are included in narcissism in that narcissistic subject has the characteristics that idealizes the object of libido. However, in this study, the heroine is examined based on such a point that the object of love and extreme idealization incline toward others. We call this case reverse-narcissism. In Part 2, it is investigated what relation narcissism as an unconscious psychological tool has with Oedipus complex, which plays an important role in forming human psyche. For instance, disappointment caused by prohibition at the oedipal stage is too severe, which creates superego and its idealization to protect in such a way that narcissistic regression can not be done. Cases of extremely big gap between ego and ideal type are perversion, impostor, mania, paranoia, etc, where narcissistic and oedipal elements are combined to affect.

• Lingua Humanitatis
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• v.1 no.1
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• pp.235-251
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• 2001

According to Chomskyan grammar, humans can generate and understand an unbounded number of grammatical sentences. Against the background of pure and idealized linguistic competence, this linguistic productivity is argued and understood. In actual utterances, however, there are many limitations of productivity but they are said to come from the general constraints on performances such as capacity of short term memory or attention. In this paper I discuss a problem raised against idealized productivity. I argue that linguistic productivity idealizes our linguistic competence too much. By separating idealized competence from the various constraints of performance, Chomskyan theorists can argue for unlimited productivity. However, the absolute distinction between grammar (pure competence) and parser (actual psychological processes) makes little sense when we explain the low acceptability(intelligibility) of center embedded sentences. Usually, the problem of center embedded sentence is explained in terms of memory shortage or other performance constraints. To explain the low acceptability, however, we need to assume specialized memory structure because the low acceptability occurs only with a specific type of syntactic pattern. 1 argue that this special memory structure should not be considered as a general performance constraint. It is a domain specific (specifically linguistic) constraints and an intrinsic part of human language processing. Recent development of Chomskyan grammar, i.e., minimalist approach seems to close the gap between pure competence and this type of specialized constraints. Chomsky's earlier approach of generative grammar focuses on end result of the generative derivation. However, economy principle (of minimalist approach) focuses on actual derivational processes. By having less mathematical or less idealized grammar, we can come closer to the actual computational processes that build syntactic structure of a sentence. In this way, we can have a more concrete picture of our linguistic competence, competence that is not detached from actual computational processes.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.04a
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• pp.462-463
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• 2008

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.405-406
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• 2012

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.04a
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• pp.27-30
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• 2004

오염토양의 pH는 7.47에서 7.97까지의 범위로 약 알카리성이며, 토성은 80% 이상이 0.425 -2 mm 범위에 분포하는 coarse sand의 성질을 가지고 있다. 토양 입도 분석 및 농도 분포의 결과로 볼 때, 입도 2mm 이하의 토양 중 0.85-2.00 mm 범위에 있는 토양이 약 60% 이상의 오염물질을 포함하고 있다. 세척제로 고려된 용액 중 As 용출효율의 결과를 살펴보면, H$_3$PO$_4$ 및 citric acid가 100% 제거율을 보이고 있어 가장 효과적임을 나타내고 있다.

• Korean Journal of Logic
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• v.10 no.1
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• pp.109-130
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• 2007

현장의 과학자들이 지닌 인과 개념을 가장 잘 반영하고 있는 것으로 보이는 인과의 조종가능성 이론은 인과 관계를 조종가능성으로 이해할 수 있다는 직관에 기초한다. 즉 C가 E의 원인이라는 것은 C를 조종함으로써 E를 변화시킬 수 있다는 것이다. 이 이론의 핵심 개념인 조종의 이해를 위해 최근 관심의 초점이 되는 간섭은 이상화된 실험 상태에서 국지적 변화를 일으키는 것이라고 이해할 수 있다. 우드워드는 간섭의 의미가 목적에 따라 다르게 구체화될 수 있다는 전제 아래 자신이 제시한 간섭 개념이 펄의 간섭 개념과 다르다고 주장한다. 하지만 본 논문은 이와 같은 우드워드의 주장이 설득력이 없다고 결론짓는다. 본 논문은 우드워드의 간섭 개념이 펄의 간섭 개념과 다르기보다는 펄의 간섭 개념이 암묵적으로 전제하고 있는 바를 구체화하고 있다고 논증한다.

• Magazine of the Korea Concrete Institute
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• v.1 no.1
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• pp.115-124
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• 1989

반복하중하에서 휨과 전단거동을 구분할 수 있는 철근콘크리트의 비선형해석 보델이 개발되었다. 개발된 모델은 부재를 single component부재로 이상화시켰으며, 휨과 전단거동을 각각 표현할 수 있는 hysteretic ruless의 결합형태로 이루어졌다. 개발된 모델을 이용한 반복하중을 받는 캔딜레버 보의 해석결과는 실험결과와 비교되었고, 그 결과는 만족스러운 값을 얻었다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1992.04a
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• pp.45-50
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• 1992

해양 가이드 타워를 대상으로 하여, 지진하중에 대한 심해응구조물의 비정상거동해법에 대하여 연구하였다. 지반운동의 비정상특성은 정상과정성분에 시간포락함수가 곱해진 형태로 모형화하였으며, 구조물의 비정상거동은 시간종속분산함수로 구하였다. 지반가속도에 대한 자기상관함수를 복소지수함수의 형태로 이상화함으로써, 구조물 거동의 시간종속함수가 해석적인 방법으로 쉽게 구할 수 있는 기법을 개발하였다. 지진의 발생시간 동안 예상되는 최대거동을 구하였으며. 이를 구조물 거동을 정상확률과정으로 가정하여 산정한 결과와 비교 분석하였다.