• 제목/요약/키워드: Sophisticated Cause

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고도 정밀 M&S 시스템을 이용한 해난사고 원인규명 (Marine Accident Cause Investigation using M&S System)

  • 이상갑
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2014년도 춘계학술대회
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    • pp.36-37
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    • 2014
  • It is necessary to develop highly sophisticated Modeling & Simulation (M&S) system for the scientific investigation of marine accident causes and for the systematic reproduction of accidental damage procedure. To ensure an accurate and reasonable prediction of marine accidental causes, such as collision, grounding and flooding, full-scale ship M&S simulations would be the best approach using hydrocode, such as LS-DYNA code, with its Fluid-Structure Interaction (FSI) analysis technique. The objectivity of this paper is to present three full-scale ship collision, grounding and flooding simulation results of marine accidents, and to show the possibility of the scientific investigation of marine accident causes using highly sophisticated M&S system.

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『파이돈』에서의 세련된 원인들 (The Sophisticated Causes in the Phaedo)

  • 전헌상
    • 철학연구
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    • 제122호
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    • pp.1-23
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    • 2018
  • "파이돈" 102d10-107b10에서 제시되는 영혼 불멸에 대한 마지막 증명은 많은 논란의 대상이 되어왔다. 마지막 증명에서 소크라테스는 더 세련된 원인의 유형을 확립한 다음, 영혼이 몸에 삶을 가져오는 세련된 원인임을 보임으로써 영혼의 불사와 불멸을 증명하려 시도한다. 그런데 세련된 원인을 확립하는 과정에서 예로서 제시되고 있는 것들, 즉 셋, 불, 눈, 그리고 영혼의 존재론적 지위에 관해 치열한 논쟁이 있어왔다. 이 글에서는 이 논쟁의 주요 측면들을 면밀히 검토하고, 그것이 마지막 증명의 타당성에 어떤 영향을 미치는가를 고찰한다. 일군의 학자들은 저 넷이 모두 내재적 형상이라고 해석한다. 반면 일군의 학자들은 저 넷 모두가 내재적 형상이 아니라고 해석한다. 이 글에서는 저 넷 중에는 형상과 형상 아닌 것이 혼재하고 있음을 보인다. 그리고 궁극적으로 이러한 혼재와 영혼의 존재론적 지위가 모호한 상태로 남겨져 있다는 사실이 마지막 증명의 효력을 약화시키고 있음을 보인다.

정밀기기의 낙뢰서지 대책에 관한 연구 (Protecting electronic equipment against lightning surge)

  • 임순재;이주광;이완규;최만용
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1995년도 춘계학술대회 논문집
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    • pp.358-362
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    • 1995
  • Precision electronic equipments are composed of sophisticated microcircuits that are extremely vulnerable to lightning-caused voltage spike. This transient voltage spike may cause upset, latent failure or interference on electronic equipments. In order to develop efficient lightning protection measures on AC power lines for a road traffic controller, experimental surge immunity tests were conducted according to IEC standard 801-5. The combination of gas tube arrester and metal-oxide varistor was installed at the input of AC power lines and the silicon avalanche suppressor installed at the output of DC power supply as lightning protection measures.

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감정 상태에 따른 컴패니언 로봇의 인터랙션 디자인 : 공감 인터랙션을 중심으로 (A Study on Interaction Design of Companion Robots Based on Emotional State)

  • 오예전;신윤수;이지항;김진우
    • 디지털콘텐츠학회 논문지
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    • 제18권7호
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    • pp.1293-1301
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    • 2017
  • 최근 핵가족화, 개인화 등과 같은 사회구조 변화로 개인 및 사회적 문제가 대두되고 있으며, 부정적 감정 증폭으로 인해 다양한 문제의 원인이 되기도 한다. 과거에 심리적 안정감을 주는 가족 구성원의 부재는 현대인의 감정적 어려움의 대표적인 원인으로 꼽을 수 있다. 이러한 개인 및 사회적 문제를 일상생활에서 사용자와 교감하는 컴패니언 로봇의 공감 인터랙션을 통해 해결하고자 한다. 본 연구에서는 감성 로봇 프로토타입 제작을 통해 정교한 공감 인터랙션 디자인을 하였으며, 실험을 통해 연구를 진행하였다. 그 결과로 감성 로봇의 공감 인터랙션에 얼굴 인터랙션이 크게 영향을 미치며, 부정 감성에서 인터랙션이 로봇의 공감도를 높이는 것을 확인할 수 있었다. 결과적으로 본 연구는 감성 로봇을 제작하여 더욱 정교한 인터랙션을 구현하였다는 점과, 실험 결과를 바탕으로 로봇의 공감 인터랙션 디자인 가이드라인을 제시하였다는 점에서 이론적 및 실용적 의의가 있다.

체험 공간 스토리텔링의 중첩 구조 및 특성에 관한 연구 - 뮤지엄 공간을 대상으로 - (A Study on the Structure and Characteristic of Overlapping of Storytelling about Experience Space - Focus on the Museum space -)

  • 안현정
    • 한국실내디자인학회논문집
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    • 제22권4호
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    • pp.41-51
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    • 2013
  • Lately in many cases, Spaces are designed by stimulating user's sensibility, emotion, psychological software over based on the user behavior and purpose of space. Because space is not only practical using and use purpose but also the place for expressing ourselves by experiences. But space is a physical thing. so we need to arrange a structure of abstract and formless source of design by sophisticated grammaticalization. Especially storytelling of that abstract thing have characteristics of relation, process among users and space. because storytelling is focused on the discourse of stories and relationship record of that discourses. So this is used by expression device for user's emotion things and subjects in numerous cases. And storytelling is the basic, important element for user's experience in a space. By the way, Overlapping is also basic element for being possible to make experiences by concrete thing. that is because, Overlapping is layering phenomenon of some objects. Overlapping is made distance, distance make depth, and this relations take us an experience. Finally storytelling, Overlapping and space of experience are relation of cause and effect. So in this thesis, researcher looks for the relation characteristics between storytelling and overlapping by experience. and makes the abstract source into concrete and sophisticated formular.

Vaccines against periodontitis: a forward-looking review

  • Choi, Jeom-Il;Seymour, Gregory J.
    • Journal of Periodontal and Implant Science
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    • 제40권4호
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    • pp.153-163
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    • 2010
  • Periodontal disease, as a polymicrobial disease, is globally endemic as well as being a global epidemic. It is the leading cause for tooth loss in the adult population and has been positively related to life-threatening systemic diseases such as atherosclerosis and diabetes. As a result, it is clear that more sophisticated therapeutic modalities need to be developed, which may include vaccines. Up to now, however, no periodontal vaccine trial has been successful in satisfying all the requirements; to prevent the colonization of a multiple pathogenic biofilm in the subgingival area, to elicit a high level of effector molecules such as immunoglobulin sufficient to opsonize and phagocytose the invading organisms, to suppress the induced alveolar bone loss, or to stimulate helper T-cell polarization that exerts cytokine functions optimal for protection against bacteria and tissue destruction. This article reviews all the vaccine trials so as to construct a more sophisticated strategy which may be relevant in the future. As an innovative strategy to circumvent these barriers, vaccine trials to stimulate antigen-specific T-cells polarized toward helper T-cells with a regulatory phenotype (Tregs, $CD_{4+}$, $CD_{25+}$, $FoxP_{3+}$) have also been introduced. Targeting not only a single pathogen, but polymicrobial organisms, and targeting not only periodontal disease, but also periodontal disease-triggered systemic disease could be a feasible goal.

충격파와 난류경계층의 상호작용에 대한 수치해석 (NUMERICAL SIMULATION OF HIGH-SPEED FLOWS WITH SHOCK WAVE TURBULENT BOUNDARY LAYER INTERACTIONS)

  • 문수연;손창현
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 2000년도 춘계 학술대회논문집
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    • pp.51-59
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    • 2000
  • The Interactions of shock wave with turbulent boundary layers in high-speed flows cause complex flowfields which result in increased adverse pressure gradients, skin friction and temperature. Accurate and reliable prediction of such phenomena is needed in designing high-speed propulsion systems. Such analyses of the complex flowfields require sophisticated numerical scheme that can resolve interactions between shock wave and boundary layers accurately. Therefore the purpose of the present. article is to introduce an accurate and efficient mixed explicit-implicit generalized Galerkin finite element method. To demonstrate the validity of the theory and numerical procedure, several benchmark cases are investigated.

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지하수-터널 수리상호작용에 따른 터널의 장기거동 연구 (A study on the long-term behavior due to the hydraulic interaction between ground water and tunnel)

  • 신종호;신용석;안상로;박동인
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2006년도 춘계 학술발표회 논문집
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    • pp.239-248
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    • 2006
  • The interaction between ground water and structure is complicated behavior which cannot be easily investigated In the laboratory and monitored in the fields. In this study numerical simulation of the interactive behavior was performed using sophisticated coupled-finite element method. Hydraulic behavior of structure is modeled using solid elements with finite Permeability. Recovery of ground water table in the long-term is considered by controlling hydraulic boundary conditions. The results showed that the interaction effect is significant. Particularly non-symmetry in the lining permeability resulted in highly unbalanced pore water pressure which may cause detrimental effects on inner linings of tunnels acting as drains.

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옥외용 전자장비의 낙뢰 서지 대책 (Protecting electronic equipment against lightning surge)

  • 임순재;이주광;이완규;최만용
    • 한국안전학회지
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    • 제12권1호
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    • pp.29-36
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    • 1997
  • Precision electronic equipments for outdoor use are composed of sophisticated microcircuits that are extremely vulnerable to lightning-caused voltage spike. This transient voltage spike may cause upset, latent failure or Interference on electronic equipments. In order to develop efficient lightning protection measures on AC power lines of a road traffic controller as a electronic equipment for outdoor use, experimental surge immunity tests were conducted according to IEC standard 801-5. The combination of gas tube arrester and metal-oxide varistor was installed at the input of AC power lines and the silicon avalanche suppressor installed at the output of DC power supply for the lightning protection measures.

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Bone mineral density deficits in childhood cancer survivors: Pathophysiology, prevalence, screening, and management

  • Kang, Min Jae;Lim, Jung Sub
    • Clinical and Experimental Pediatrics
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    • 제56권2호
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    • pp.60-67
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    • 2013
  • As chemotherapy and other sophisticated treatment strategies evolve and the number of survivors of long-term childhood cancer grows, the long-term complications of treatment and the cancer itself are becoming ever more important. One of the most important but often neglected complications is osteoporosis and increased risk of fracture during and after cancer treatment. Acquisition of optimal peak bone mass and strength during childhood and adolescence is critical to preventing osteoporosis later in life. However, most childhood cancer patients have multiple risk factors for bone mineral loss. Cancer itself, malnutrition, decreased physical activity during treatment, chemotherapeutic agents such as steroids, and radiotherapy cause bone mineral deficit. Furthermore, complications such as growth hormone deficiency and musculoskeletal deformity have negative effects on bone metabolism. Low bone mineral density is associated with fractures, skeletal deformity, pain, and substantial financial burden not only for childhood cancer survivors but also for public health care systems. Thus, it is important to monitor bone health in these patients and minimize their risk of developing osteoporosis and fragility fractures later in life.