• Journal of the Korean Geographical Society
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• v.37 no.2
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• pp.131-142
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• 2002

The community and communal folk belief are developed as spatial phenomena. So the communal folk belief express the spatial perception of inhabitants in traditional village. This study analysis the spatial characteristics of communal folk belief in traditional village. The study area is Bangchon village which consists of seven hamlets in Changhung-gun, Chollanam-do. The reset are as follows. First, the seven hamlet\`s location process in Bangchon village has been developed with spatio-temporal variations since Korea dynasty. Second, the communal folk belief in study area can be classified as Ipsok, Byolsinje\`s site, Hojeby\`s site. Third, the spatial characteristics of communal folk belief in study area are indication of each hamlet\`s boundary, indication of entrance and exit of Bangchon visage, indication of central space of Bangchon village in traditional period. Consequently, the spatial distribution of communal for belief are important indicator about spatial structure and spatial perception in traditional village\`s society.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.14 no.9
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• pp.950-954
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• 2003

This paper presents the delivered power and reflection coefficient in metallic shielding enclosure excited by the interior source, which are evaluated with the method of moments, and describes a method for reducing the radiation of electromagnetic fields in the cavity by putting lossy dielectric material in one inside wall. In this paper we introduce carbon polystyrene-foam as lossy dielectric material and observe it's effects of reduction when the thickness and permittivity of lossy dielectric material are changed. The results show that the reduction of the electromagnetic radiation can be achieved by controlling the amount of carbon in lossy dielectric material. The theoretical analysis is verified by the measured delivered power.

• Computational Structural Engineering
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• v.4 no.4
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• pp.117-124
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• 1991

In order to predict properly the effects of ground motion associated with earthquakes on underground radioactive waste disposal facilities, an understanding of the structural behavior of an underground opening in discontinuous rock masses subjected to dynamic loadings is essential. This paper includes literature review on computational models for discontinuous rock masses and on mathematical models for the structural analysis of underground opening. Then, structural analyses of underground openings using the distinct element computer program written for the static and dynamic analysis of discontinuous rock masses have been performed.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.14 no.3
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• pp.391-399
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• 2001

Three-dimensional dynamic analysis of underground openings subjected to explosive loadings considering the effects of water saturation is carried out in this study. The surrounding rock mass is assumed to be the limestone with 13.5% of porosity. Two calculations are compared using as identical explosive charge; the first in dry rock of 13.5% porosity, the second in the identical rock, but in a fully saturated condition. It is shown that velocity, displacement, and stress time histories are higher in saturated rock than those in dry rock through numerical studies. It is also shown that underground openings in saturated rock masses could be significantly more vulnerable to the potential damages associated with shear failure than those in dry medium.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.39 no.12
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• pp.913-919
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• 2015

A supercavitating vehicle has a speed of more than 300 km/h in water. A numerical analysis of the flow around a supercavitating vehicle must deal with a multiphase flow consisting of the water, vapor and exhaust gas because the vehicle is powered by roket propulsion. The effect of the exhaust gas on the vehicle is an important part in the study of the performance of the supercavitating vehicle. In the present study, the effect of the exhaust gas on the drag of vehicle was investigated by conducting numerical analysis. When there is no exhaust gas, drag of vehicle is affected by re-entrant. In the case with rocket propulsion, the exhaust gas reduces the influence of re-entrant. The exhaust gas also creates Mach disk and it changes drag profile.

• Korean journal of communication and information
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• v.57
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• pp.109-136
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• 2012

This research analyzed the news coverage of controversy over Korean resumption of Wartime Operational Control from the United States in 2006, trying to find various narrative frames and their relevance to the characters of journalistic interpretive communities. Three competitive frames emerged: Self-national defense and peace making, Balance of self-national defense and the Korea-US alliance, and Priority of the Korea-U.S. alliance and national security. Journalistic discourses were also analyzed through the in-depth interviews of 14 journalists from three interpretive communities. The results revealed that competitions of narrative frames reflected the tensed relationship among political power blocs, each representing the liberal, moderate, or conservative camp of Korean society, and preference of journalistic practices such as objective journalism to advocacy journalism. Finally, inferences were made that the clashes among interpretive authorities, existing behind the competition of news frames, restrained public deliberations on a critical incident regarding national security by blocking up the reasoned news coverage of political controversy.

• Computational Structural Engineering
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• v.10 no.2
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• pp.171-178
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• 1997

Three-dimensional dynamic analyses of underground openings subjected to explosive loadings are carried out. Dynamic analyses consist of two steps; one-dimensional source calculation and three-dimensional tunnel analysis. One-dimensional source calculation includes explosive charge and the free field surrounding rock. The input pressure time history for three-dimensional tunnel analysis is obtained from the companion one-dimensional source calculation. The computer program MPDAP-3D incorporated this analysis capability. It is shown that the computer program is a useful tool for the analysis of the structural safety evaluation of underground openings during construction by drill and blasting method.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.28 no.4
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• pp.14-27
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• 2010

This study is aimed at understanding the wisdom of our ancestors in Korean traditional villages and finding out cues to designate and utilize community space in planning residential area in villages by examining community space in Korean traditional villages from cultural landscape point of view. This study designated 18 Korean traditional villages which have been preserving Korean traditional culture up to now, so deserve conservation from historical, cultural and artistic viewpoint. This study divided community spaces in each village into social area and ritual area depending on their uses and functions based on the results of pilot study and main study. In addition, ritual areas were also divided into Confucian ritual area and ethnic ritual area. Specifically, this study examined characteristics of space location and users by understanding the location of community space factors in the 18 villages. As for the factor analysis of community spaces, community factors established after the modern age were examined from modern viewpoint, and factors which had been destroyed or lost their original functions were examined from retrospective viewpoint. In conclusion, this study found out that cultural landscape in Korean traditional villages were affected by social relationship among villagers. The community spaces of villagers were multiple-function space rather than a space which was exclusively used by a specific class. Though the occupation of these spaces was separated and differentiated depending on sexes and ages, villagers tried to understand and respect each other through tacit communication.

• Proceedings of the Optical Society of Korea Conference
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• 2000.08a
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• pp.222-223
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• 2000

지금까지 gold-coated 반사체, cusp-shaped 반사체, 복합 포물 반사체(CPC), 난반사 공동체 등 다양한 형태의 반사체가 횡펌핑을 이용한 Nd:YAG 레이저의 개발을 위하여 고안되어졌다. 횡여기되는 Nd:YAG 레이저의 광학적 효율은 반사체의 형태, 다이오드 레이저의 파장, Nd:YAG 결정의 지름, Nd$^3$의 도핑농도에 따라 영향을 받는다.$^{(1)}$ 본 연구에서는 고출력의 횡여기 Nd:YAG 레이저를 개발할 목적으로 광여기 공동으로 사용된 난반사 공동체의 내부지름과 레이저 매질인 Nd:YAG 결정의 흡수계수 등 매개변수를 변화시켜 흡수분포와 출력을 계산하였으며, 이러한 매개변수들이 기울기 효율에 미치는 영향을 수치 해석적으로 연구해 보았다. 광선추적법에서 사용한 매개변수 중에서 다이오드 레이저의 파장은 808 nm이고, 반사율은 90%이며, 여기 다이오드 출력은 1080 W이다. 난반사 공동체$^{(2)}$ 의 반사율은 95.7%이고, 결정의 투과율은 90%이며, 결정의 반지름은 2.5 mm이다. 사용된 여기 구조도는 그림 1과 같다. 여기헤드는 Nd:YAG 결정, 난반사 공동체, 그리고 3개의 360 W급 다이오드 어레이들로 구성되어 있다. (중략)

• The Korean Journal of Archival Studies
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• no.47
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• pp.131-159
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• 2016

It has been basic value and fundamental philosophy for a long time for archivists to protect neutrality and objectivity in records management. The demands to maintain objectivity of records management is directly related to protect the administrative and legal evidence of records for fulfilling jurisdictional goal, and more fundamentally, it is related with the intrinsic nature of archives. As an archivists' expertise is seems to be derived from ability to give objective-judge on record value, and candor to organize and classify records. Thus, the international Code of Ethics of archivists stipulates that all such obligations directly or indirectly. However, since Hans Booms and Terry Cook emphasized the social responsibility of archivists and highlighted the social power of archives, the discourse of archival objectivity gets to be given more attention to people. This article, following the cultural anthropologist Clifford Geertz' interpretative methodology theory, examine the archival implications to adopt the theory, particularly from the perspective of objectivity and archival otherness.