• Journal of Korea Ship Safrty Technology Authority
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• s.26
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• pp.4-23
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• 2009

선체용 복합재료 및 구조용 접착제와 신공법인 진공 성형법으로 건조한 레저선박에 강화플라스틱 구조기준을 그대로 적용하기에는 무리가 있으며, 따라서 복합재료, 수지, 접착제 및 진공 성형법 등 현장조사를 토대로 복합소재 및 접착제를 이용한 시험편을 제작하여 복합재료의 기계적 특성, 구조용 접착제에 대한 신뢰성 평가 및 국내외 기준 비교 검토를 통한 국내 실정에 적합한 검사기준을 제안하고자 한다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.513-516
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• 2003

가스터빈 복합발전은 우리나라 총 발전설비 용량의 약 25%를 차지하고 있다. 따라서 이들 가스터빈의 안정적인 운전을 위한 연소관리기술의 개발이 필요하며, 특히 발전설비의 대기오염물 배출기준이 점차 강화됨에 따라 가스터빈의 저NOx 연소 운영기술의 확보가 필수적이다. 국내에는 서인천복합, 신인천복합, 울산복합 및 보령복합 발전소 등에 건식 저 NOx 연소기가 설치되어 운영 중에 있으며 신규 건설중인 복합발전소에는 모두 이들이 설치될 예정이다.(중략)

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.10a
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• pp.220.2-220
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• 2003

밀가루에 멥살(밀양 23호) 또는 통일찹쌀 가루를 10, 20 및 30% 대체한 복합분의 물리적 성질 및 제빵 적성을 검토하였다. 밀-밀양 복합분은 밀-찹쌀 복합분보다 높은 점도를 보였다. 복합분의 파리 노그라프 안정성은 밀가루 보다 짧았으나 최적 반죽 발전 시간은 비슷하였다. 제빵 적성은 밀-밀양복합분이 다소 좋은 결과를 보였고 대체로 쌀가루(멥쌀 또는 찹살)를 20%수준까지는 대체할 수 있을 것으로 보인다. 10% 수준으로는 밀가루 빵에 크게 손색이 없는 제품이 가능하였다.

• Korean Journal of Social Welfare
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• v.62 no.4
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• pp.193-222
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• 2010

This questionnaire study examined the processes linking complexity of self-construal to self-positivity conceptualized as taking multiple perspectives, self-acceptance and self-regulation that, in turn, affect psychological well-being among people with an experience of life-crisis during adulthood due to physical disability or divorce. Data were drawn from 359 adult Koreans residing in Seoul metropolitan area, including the physically disabled, the divorced, and their counterparts without a life-crisis experience during adulthood for comparison. On average, the life-crisis experience group(LEG) had a higher independent selfconstrual and a lower interdependent self-construal than the comparison group(CG). As predicted, complexity of self-construal contributed to taking multiple perspectives that helps searching for meaning, and this, in turn, was found to foster self-acceptance and self-regulation. Through these variables except self-regulation, complex self-construal contributed to psychological well-being as manifested by a higher level of positive emotion and a lower level of depression. As expected, while taking multiple perspectives fostered positive emotion both directly and indirectly through self-acceptance among LEG and CG, only in LEG it directly reduced depression. The comparative approach employed in this study enabled to discern that taking multiple perspectives promotes psychological well-being in LEG by contributing to both meaning making and positive attitude, whereas it promotes psychological well-being in CG primarily by fostering positive attitude. Finally implications for this study were discussed and directions for future research were suggested.

• Journal of the Korean Ceramic Society
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• v.38 no.6
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• pp.575-581
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• 2001

세라믹/금속기지 복합재료에서 횡방향의 단축인장하중을 받는 경우, 복합재료의 특성에 관한 시뮬레이션 결과이다. 세라믹과 금속기지간 계면에 강한 결합이 존재하는 복합재와, 계면에서의 결합이 약한 복합재의 두 경우에 대하여 횡방향 평균응력과 평균변형율에 대한 관계를 계산하였다. 복합재료의 미시역학적개념과 유한요소해석법을 적용하여 세라믹체적분율의 변화에 따라 각기 해석되었다. 본 연구에서 계산된 횡방향 탄성계수는 문헌에 알려져 있는 미시역학개념으로 유도된 식에 의한 횡방향탄성계수값과 잘 일치되었다. 계면에서 강한 결합이 있는 복합재와는 달리, 약한 결합의 복합재는 인장하중에 의하여 세라믹/금속계면에서 금속재료와 세라믹간의 분리가 발생된다. 이 분리는 전체복합재의 강성을 감소시키며, 금속의 부피분율이 감소될수록 (즉, 세라믹의 부피분율이 증가할수록) 횡방향 평균응력의 평균변형율에 대한 감소로 나타났다. 미시역학의 개념을 적용한 유한요소해석기법을 통하여, 이미 알고 있는 복합재 각 성분의 특성으로부터 복합재료의 계면특성과 횡방향특성을 예측할 수 있다.

• Polymer(Korea)
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• v.27 no.6
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• pp.576-582
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• 2003

When the halogenated flame retardant, decabromodiphenyl oxide, was added to the polypropylene/nylon blend, and was compounded with montmorillonite and compatibilizer, maleic anhydride polypropylene, the improvement of flame retardancy and mechanical properties was investigated. The degree of dispersion between polymer resin and inorganic nanoparticles was investigated, and the flame retardancy and mechanical properties was measured quantitatively. XRD results showed that the montrnorillonite was com-pletely exfoliated after polypropylen/nylon nanocomposites was mixed above twice. By compounding with montmorillonite, polypropylene/nylon blend system was overcome the deterioration of flame retardancy. The tensile strength and impact strength were slightly increased, and by compounding with montmorillonite, the additional increase in mechanical properties was obtained. Therefore, the flame retardancy of polypropylene / nylon blend was decreased by adding nylon, but by compounding with inorganic nanoparticle, improvement of the flame retardancy and mechanical properties was obtained.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.30 no.6_1
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• pp.549-557
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• 2012

Spatial phenomena such as environment pollution, disease and the risk of spreading information need a rapid initial response to perceive spread event. Moving data perceive spread event through real-time processing and analysis. To process and analysis the event, spatial-temporal complex event processing is used. Previous spatialtemporal complex event processing is possible basis spatial operator but insufficient apply to design spatialtemporal complex event processing to perceive spatial phenomena of high complexity. This study proposed hierarchical spatio-temporal CEP design which will efficiently manage the fast growing incoming sensor data. The implementation of the proposed design is evaluated with GPS location data of moving vehicles which are used as the incoming data stream for identifying spatial events. The spatial component of existing CEP software engine has been extended during the implementation phase to broaden the capabilities of processing spatio-temporal events.

• Journal of Korea Entertainment Industry Association
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• v.14 no.8
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• pp.163-174
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• 2020

The purpose of this study is to derive the characteristics of the creative process of convergence performing arts. Therefore, the PADAF-Play and Dance Art Festival, a representative convergence performing arts festival in Korea that has been held steadily every year since the first event in 2011, was selected as the subject of the study. Through PADAF, a representative convergence performing arts festival in Korea, qualitative case studies were selected through process-oriented discovery to study the characteristics of the creative process of convergence performing arts, which is a key feature of performing arts in the 21st century. For realistic and empirical research, the 8th and 9th PADAF participated in the entire process from the initial stage of preparation to the closing ceremony and conducted several in-depth interviews with PADAF officials and participating artists. Looking at the characteristics of the convergence performance art creation process through PADAF, creators overcame difficulties that they had not thought of in different ways in the process of meeting different heterogeneous genres, but through understanding other genres, experiential values through convergence, sharing as collaborators, and various ways of communication. The characteristics of the convergence performing arts creation process, which is focused on PADAF, are "Rhizom thinking" by French philosopher Gilles Deleuze(1925-1995), "Collective intelligence," and "Experimental Value for Experimental Creation" by creators. Through this derivation, we will help the changing performing arts scene based on the basic human desire to understand convergence performance art a little more and communicate through the extended expression of convergence.

• Science of Emotion and Sensibility
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• v.16 no.4
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• pp.469-480
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• 2013

In this paper, we propose new method to reduce variance and express mixed feelings in Russell's emotional dimension(A Circumplex model). A Circumplex model shows mean and variance of emotions(joy, sad, happy, enjoy et. al.) in PAD(Pleasure, Arousal, Dominace, et. al.) dimension using self-diagnostic method(SAM: Self-Assessment-Manikin). But other researchers consistently insisted that Russell's model had two problems. First, data(emotional words) gathered by Russell's method have too big variance. So, it is difficult to separate valid value. Second, Russell's model can not properly represent mixed feelings because it has structural problem(It has a single Pleasure dimension). In order to solve these problems, we change survey methods, so that we reduce value of variance. And then we conduct survey(which can induce mixed feelings) to prove Positive/Negative(Pleasure) part in emotion and confirm that Russell's model can be used to express mixed feelings. Using this method, we can obtain high reliability and accuracy of data and Russell's model can be applied in many other fields such as bio-signal, mixed feelings, realistic broadcasting, et. al.

• Composites Research
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• v.32 no.1
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• pp.50-55
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• 2019

In this study, we investigated the effect of fiber alignment in helicoidal structure on the mechanical properties of biomimetic fiber-reinforced composites. Using finite element analysis, circular biomimetic fiber composites were designed and studied. Various amounts of pressure loads were applied to a surface of the composites, and then bending and failure behaviors of the composites were analyzed. The results showed various failure morphologies according to the orientation of the fibers, and it turned out that the fiber alignment in helicoidal structure significantly improved the bending strength of the composite under pressure loading. This was because the fiber alignment in various directions for each layer dispersed effectively the fracture energy from the external load into multiple directions.