• Proceedings of the Korea Information Processing Society Conference
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• 2010.04a
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• pp.143-145
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• 2010

유비쿼터스 컴퓨팅이란 언제 어디서나 사용자가 원하는 서비스를 제공받을 수 있는 컴퓨팅 환경을 말한다. 최근 네트워크와 컴퓨팅 기술이 발달하고 서비스에 대한 수요가 늘어남에 따라 유비쿼터스 컴퓨팅에 대한 관심도 증가하고 있으며 지속적인 연구가 이루어지고 있다. 그 동안 이루어진 많은 연구들을 통해 유비쿼터스 컴퓨팅 환경을 구축하기 위한 기반기술에 큰 발전이 있었다면, 최근에는 실제 유비쿼터스 환경에서 사용자에게 제공되는 서비스 컨텐츠의 효과적인 개발 및 확대에 대한 관심이 높아지고 있다. 모든 개체들이 네트워크로 연결되는 유비쿼터스 컴퓨팅 환경에서는 대부분의 사용자 컨텐츠가 네트워크를 통해 호출할 수 있는 원격 서비스의 형태로 제공된다. 또한 이러한 서비스들은 웹 서비스나 OpenAPI 등 다양한 형태로 존재하므로 이러한 원격 서비스들이 효과적으로 융합되고 재생산 될 수 있어야 한다. 따라서 본 논문에서는 기존에 존재하는 형태의 원격 서비스들을 융합하여 새로운 서비스를 개발하기 위한 기법 및 도구를 제시한다. 이를 위해 본 논문에서는 유비쿼터스 컴퓨팅 환경에서 제공되는 서비스 형태를 U-Service로 정의하며, U-Service를 효과적으로 명세하고 융합할 수 있는 기법 및 도구를 제시한다.

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2000.11a
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• pp.19-19
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• 2000

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2002.05a
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• pp.73-79
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• 2002

Fretting wear test in room temperature air was performed to evaluate the wear mechanism of fuel rod using a fretting wear tester, which has been developed for experimental study. The main focus was to compare the wear behaviors of fuel rod against support springs at different contact geometries (i.e. concave and convex) and slip directions (axial and transverse). The wear on the tube was examined by the surface roughness tester, which measures the volume. The result indicated that with change of contact geometry from 5N of normal load to 0.1mm gap, wear volume of tube Increased in the condition of concave spring, but slowly decreased in convex spring. From the results of SEM observation, wear mechanism of each test condition was also depend on the above contact parameters. The wear mechanism of each test condition in room temperature air is discussed.

• The Journal of the Korea Contents Association
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• v.13 no.6
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• pp.108-115
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• 2013

This study focused on whether the existence and type of originals have any effects on box-office performance of the movie. Cultural products have characteristics of experience goods of which consumers hardly know the value of the products before they actually experience the products. To reduce the uncertainty, movie producers may want to use existing contents already made for other type of cultural products, which is generally called of One Source Multi Use. Using 381 Korean box-office data during January 2010 and September 2012, this study found that, first, the existence of original affects positively the movie's box office performance, second, the fiction based original has a positive effect on the movie's box office performance while cartoon and movie/TV based originals do not, and third, the movie type(commercial movie) positively moderates the relationship between fiction based original and movie performance. This study showed that box-office performance is not only affected by the characteristics of the movie itself, but also affected by other conditions including the use of existing originals created for other purposes.

• Journal of Ginseng Research
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• v.26 no.4
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• pp.213-218
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• 2002

Crystalline calcium oxalate occur throughout near)y all plants species in five major forms; styloids, druses, raphids, prisms and sands. These crystals are known to be distributed in specific tissue such as cortex, xylem, phloem, cambium and epidermis. This research was undertaken to identify the occurrence, type, location and ultrastructure of druse crystals in Panax ginseng. In situ visualization, conventional light microscopy, histochemistry and scanning electron microscopy were applied for these purposes. Druse crystals in ginseng were identified as calcium oxalate by silver nitraterubeanic acid histochemistry. Calcium oxalate crystals are observed in nearly all plant organs such as leaf, petiole, peduncle, stem, rhizome, tap root and lateral root except fine root. Most frequent observation of crystals in the leaf and rhizomes were noticed. Three different types of calcium of oxalate druse crystals were identified by scanning electron microscopy.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.493-495
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• 2005

유비쿼터스 네트워크는 기존의 네트워크와 같이 네트워크 인프라가 구축된 상태에서 통신을 수행하는 것이 아닌 인프라가 존재하지 않은 상태에서 각 단말들 상호간의 라우팅으로 데이터 송$\cdot$수신 등의 통신 기능을 수행할 수 있는 형태의 네트워크 구조를 가지므로 유비쿼터스 컴퓨팅 환경에서 보안성을 제공한다는 것은 많은 어려움이 따른다. 본 논문에서는 프로토콜에서 기본적으로 보안성을 제공하기 위한 2가지 형태의 패킷 형태를 제시하였고, 이러한 구조를 통한 데이터 전송은 보다 빠른 데이터 처리를 수행할 수 있다.

• Journal of KSNVE
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• v.7 no.1
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• pp.20-29
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• 1997

내부공진은 2자유도계 이상의 다양한 비선형 시스템에 존재할 수 있으며 모드 사이의 진동에너지의 교환의 원인이 된다. 위에서 설명한 흡진기의 경우처럼 그 시스템의 동작에 필수적인 요소가 되기도 하며 직사각형 평판의 경우처럼 선형이론 으로는 예측불가능한 진폭변조된 진동을 유발하기도 한다. 이론적인 해석의 결과 다양한 분기와 여러가지 형태의 해를 가지며, 특히 주기적 정상해와 혼돈적인 해를 갖는 것이 밝혀졌다. 이러한 주기적 정상해는 구조물에 따라 여러 가지 형태로 나타 나며 평판의 경우는 진폭변조된 움직이는 파형으로, 본문에서는 언급하지 않았지만 현의 경우는 타원의 퀘적의 크기와 주축의 방향의 변화로 나타난다. 이러한 다양한 해들은 구조물의 종류와 형상에 따라 다른 형태로 나타나며 향후 연구의 대상이라 생각되어진다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 1998.10a
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• pp.13-13
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• 1998

램가속기의 발진 과정에서 유동장 내에는 수백 기압 이상의 고압 영역이 존재하며 이러한 영역에서는 이상기체 가정이 더 이상 유효하지 않게 된다. 따라서 램가속기 작동조건에 적용 가능한 적절한 형태의 실제 기체 상태 방정식이 요구된다 또한 기존의 온도에 종속적인 Arrhenius 형태의 기초 반응들로 이루어진 축소 화학 반응 모델은 상압 조건하에서 적용 가능하므로 고압 화경에서 적용하기 위해서는 온도뿐 아니라 압력에 종속적인 형태의 반응율 상수가 도입되어야 한다.

• Journal of Korean Philosophical Society
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• v.148
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• pp.49-72
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• 2018

In this paper, I tackle the question as to why the Confucian tradition in East Asia failed to generate democracy. In the first section, I discuss various forms of Confucianism and come up with a most suitable one before I define democracy. I then consider the view that, even though Confucianism, thus defined, had the democratic ideals, it could not generate democracy because it failed to secure democratic institutional structure. I call this view 'No Institutions' View. However, there are two versions of it. First, a thin version of the view holds that the theoretical resources are clearly found in Confucianism yet they failed to provide the democratic institutions. Second, there is the view (a thick version of 'No Institutions' View), according to which the theoretical resources do exist in the Confucian tradition, though only as potentiality and not as a historical reality, and this is why the tradition failed to produce democracy. Third, some hold the view (which I call 'No Ideals' View) that Confucianism simply lacks not only the practical institutions but also theoretical ideals of democracy. In the conclusion, I discuss the reason why I reject these views and offer my own view. In particular, I offer a hybrid view concerning the relationship between Confucianism and democracy.

• Journal of the Korean earth science society
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• v.24 no.8
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• pp.711-720
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• 2003

To study characteristics of the heavy metal pollution, sediment samples were collected at 67 sites on the roadside of Jeonju city during summer and winter, 2002. The total concentration of metals including Cd, Co, Cr, Cu, Ni, Pb, Zn, and Mn in the sediment samples were determined. The results indicate that the roadside sediments in Jeonju city have lower (1/2 to 1/7 times) concentrations of Zn, Cu, Pb and Cd than the metal concentrations previously reported for roadside soil, dust and sewage sludges in Seoul. However, the metal concentrations are higher than environmental quality criteria in soil suggested from several countries, and Zn, Cu, Pb and Cd contents are usually 2-7 times higher than the world average contents of the metals in natural soil. Although pollution index and concentrations of Cr, Ni, Pb and Zn in the roadside sediments at industrial area were usually higher than those of downtown and residential area, the metal having small vehicle- and steel-related industries had high concentrations of metals. The results of chemical partitioning analysis showed that Pb, Zn and Mn are mainly associated with carbonate/adsorbed and Fe-Mn oxide phases but that Cu is largely associated with the organic and sulfide fractions. It thus indicates that both large and small (vehicle- and steel-related) industries are main sources of heavy metal contamination. Due to high solubility of the carbonate phases by natural leaching episodes, the carbonate/adsorbed Cd, Co, Ni, Pb, Zn and Mn in the roadside sediments may serve as a potential source of contamination.