• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.05a
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• pp.174-175
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• 2014

A Rural house in Chungcheong area have been variety of matters, rapid deterioration of house and incomplete of maintenance control, that is represented lack of durability heating from lack of heat insulation property, health worsening form use of toxic substance and so on. For farmers who did not know where to repair and how to repair, they are urgently needed measures of standard and basis that is to realize a condition of rural house. Accordingly, this study drew major matters and priority for revitalization through analysis of type of rural house from research on the actual condition in order to develope of diagnostic criteria of rural house.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.12A
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• pp.1983-1989
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• 2001

A new two-step soft output Viterbi algorithm (SOVA) for turbo decoder is proposed and analyzed in 7his paper. Due to the algebraic structure of the proposed algorithm, slate and branch metrics can be obtained wish parallel processing using matrix arithmetic. As a result, the number of multiplications to calculate state metrics of each stage and total memory size can be decreased tremendously. Therefore, it can be expected that the proposed algebraic two-step SOVA is suitable for applications in which low computational complexity and memory size are essential.

• Economic and Environmental Geology
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• v.32 no.5
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• pp.519-535
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• 1999

Precambrian metasedimetay rocks in the Sunchang Shear Zone (so-called Seologri and Yongamsan Formation) consist of black slate, phylite, mica schistm quartzite and rarely calc schist. The metamorphic rocks in the area have undergone at least three stages of metamorphism, which are two prograde (M1 and M2) and one contact metamorphism (M3). The metamorphism which made the most prevailing mineral assemblages in the area, is M2 stage metamorphism. The metamorphic grade of M2 methamorphism in metapelites increases from the Chlorite zone through Biotituzone, Garnet zone to Staurolite zone. The M1 stage metamorphism is recognized by kyanite and sillimanite pressure type regional metamorphism. The M3 stage methamorphism is represented in the contact boundary, which area is the chlorite zone and biotite zone near the Sunchang foliated granite and the namwon granite. The M3 stage methamorphism is characterized by andalusite bearing mineral assemblages. The peak temperature condition of M2 metamorphism estimated from coexising garnet and biotite (Kretz, 1990) is 518~598$^{\circ}C$.

• Publications of The Korean Astronomical Society
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• v.8 no.1
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• pp.83-104
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• 1993

In principle, both radiation and collision are capable of pumping the SiO masers. In order to check which pumping mechanism is more efficient, we calculated the rate equation for our model including the 3 vibrational slates with 7 rotational states of each vibrational slate. Through solving the radiative transfer equation with the Sovolev approximation, we estimated the line profiles from an expanding envelope for several transitions. It is found that the collision works more efficiently than the radiation for the inversion in excited vibrational stales. However in an expanding envelope model we could not get the strong line intensity as observed one because the population inversion is possible only in a small restricted region. For the enough population inversion to get type observed maser intensity. the number density of SiO and hydrogen molecules should be up to about $2{\times}10^5\;cm^{-3}$ and $1{\times}10^9\;cm^{-3}$, respectively, and the inversion should be occured in the region of no Jess than 11014cm.

• Economic and Environmental Geology
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• v.13 no.4
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• pp.241-246
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• 1980

Some components in uranium-bearing formations which consist mainly of black shale, slate. and low grade coal-bearing formation of Ogcheon Belt were processed statistically in order to find out the geochemical correlations with uranium. Geochemical enrichment of uranium, vanadium and molybdenum in low grade coal-bearing formations and surrounding rocks is remarkable in the studied area. Geochemical correlation coefficient of uranium and molybdenum in the rocks displays about 0.6, and that of uranium and fixed carbon about 0.4. Uranium and vanadium in uranium-bearing low grade coals denote very high correlation with fixed carbon, which is considered to be responsible for enrichment of metallic elements, especially molybdenum. Close geochemical correlation of uranium-molybdenum couple in the rocks can be applied as a competent exploration guide to low grade uranium deposits of this area.

• Economic and Environmental Geology
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• v.18 no.3
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• pp.263-276
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• 1985

Building stones can be divided into two groups: raw stone and stone product. In Korea, they consist of granite, diorite, gabbro, andesite, tuff, slate and marble, of which granite is main product. The disribution area is approximately $31,753km^2$. The enterprises of building stone are about 1,500 at present. The granites for building stone are biotite granite, hornblende granite. granodiorite and porphyritic granite, of different colors (white, pink, grey, green and black). The compressive strength of granite ranges from 813 to $1,338kg/cm^2$, hardness from 78 to 101 and water absorption ratio from 0.09 to 0.40%. The weight reduction ratio of granite for 14 hours in aqua regia+$KMnO_4$solution is 0.3~4.5wt.%. There are eighty granite quarries in Korea. Marbles can also be extensively used for building but only a few mines are operated at present.

• Journal of architectural history
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• v.7 no.2 s.15
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• pp.49-62
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• 1998

The character of spatial organization in rtaditional house is found through the analysis of field survey and measure of its micro climate in hot weather period of summer. The mean temperature of interior space is higher than outside space of the house. In the point of structural conditions, inside of Choga in caustal and mountain area is cooler than any other houses. In inland area, slate roof house is cooler than Choga. In mountain area, the thermal difference of inside and outside in Kyubjib is higher than Hotjib. In the point of spatial conditions, kitchen is the coolest space and very suitable for spatial organization. Anbang is the hottest space because of its centeral position in the house. In wind condition, mountain area is windy and caustal area is calm. Around the house the rear side of the house is windy and left side is calm.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.10a
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• pp.261-264
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• 2008

In this paper the experiments of breakdown characteristics $SF_6$ liquid ($LSF_6$) in model GIS(Gas Insulated Switchgear) were described. From the experiments results, The ability of $LSF_6$ insulation is higher than high-pressurized $SF_6$ gas. The breakdown characteristics of $LSF_6$ were produced by bubble formed evaporation of $LSF_6$ and bubble caused by high electric emission. It is considered in this paper that the results are fundamental data for electric insulation design of superconductor and cryogenic equipments machinery which will be studied and developed in the future.

• Information and Communications Magazine
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• v.31 no.4
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• pp.10-19
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• 2014

미래인터넷 연구가 우리나라에서 본격적으로 시작된 지 8년차에 접어들고 있다. 초기에 미래인터넷의 실체에 대한 다양한 의견들과 clean-slate로 갈 것인지 evolution을 할 것인지에 대한 논란이 계속된 것으로 기억된다. 현 시점에서 그 때 상황을 되돌아 보면 어떤 생각들이 그나마 유사하게 맞는 것이었는지 알 수 있어 흥미롭기까지 하다. 본고에서는 이런 미래인터넷이 태동해서 논의되었던 필요성들을 사물인터넷 혹은 만물인터넷 중심의 초연결사회의 관점에서 조망해 본 후에, 실제적으로 이런 사회를 대비하여 점차 가시화되고 있는 중요한 인프라요소 및 구축 방향을 모색한다. 이를 ICT 인프라 차원에서 다시 바라보면 최근 구축과 운용의 중심이 하드웨어에서 소프트웨어 중심으로 급속하게 전환되는 큰 변화가 본격화하고 있다. 즉 미래 사회가 요구하는 초연결에 기반한 서비스 실증을 개발/운영 병행체제 (DevOps: Developers & Operators)를 통해 신속하고 실질적으로 가능케하고 산업발전을 지원하는 인프라를 통한 개방형 혁신이 가시화되고 있다. 정리하면 본고에서는 미래인터넷으로 시작된 네트워크 인프라의 변화와 현재 현황을 살펴보고 어떤 방법론과 체계에 의하여 빠르게 발전하는 초연결사회의 요구사항을 수용하면서 서로 협업할 수 있고 경제발전을 견인하는 인프라로서의 기능과 역할을 담당할 수 있는지에 대하여 논하고자 한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.11a
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• pp.107-108
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• 2014

The rural area has aged and depressed for urban area in Korea. Furthermore, the rural house has deteriorated and is vulnerable to disaster which collapse, fire, landslide, and so on. For this matter, it need to an evaluated system for deteriorated level of rural house. The evaluated system has a repairing method and an estimated cost for rural house to offer native in rural area. This study could draw evaluation factor for deteriorated level of rural house as a basic study for the evaluated system. The evaluation factors is compared the Korean housing performance grade indication system, the Korean green building certification criteria, and the Japanese housing performance indication system. As a result, they could eight types. There are a mothproof, an waterproof, a finishing material, an asbestos cement slate of roofing, a mobility right, an opening and closing of doors and windows, an indoor environment.