• 농촌지도와개발
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• 제18권2호
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• pp.281-313
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• 2011

67.82% of domestic hot springs are in rural areas. (Ministry of Public Administration and Security statistics, 2010) Most of hot spring's facilities are aging and inability to accommodate the current changes of leisure patterns. So, a decrease of the number of visitor to the hot spring resulted in economic decline of rural areas. Hot spring has been studied, but Architecture of Hot Springs has never been interested in and research. Therefore, Nation architecture of Hot spring and foreign architecture was compared and analyzed. Then, Architectural characteristics of Hot spring in rural areas was identify. The architecture of Hot spring type of foreign and images are routinely burned, the organic form and old-fashioned adrift. However, our country found in Hot spring architecturally and daily life had any features. Thus, the country's hot springs spa area for construction of the architecture design should be characterized. And, through institutional guidelines and deliberations should be provided in the right direction.

• 한국공간정보시스템학회:학술대회논문집
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• 한국공간정보시스템학회 2005년도 GIS/RS 공동 춘계학술대회
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• pp.459-462
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• 2005

위성화상 또는 항공사진을 이용하여 산화지를 탐지하고 정량화하기 위한 여러 가지 방법적인 시도가 있었다. 보다 정확한 산화지 탐지를 위해, 본 연구에서는 기존의 고해상도 범색화상과 중 저해상도 다중분광 화상의 융합(fusion)에 주로 이용되었던 IHS(Intensity, Hue, Saturation) 색채변환을 산화지 탐지와 정량화에 적용하였다. IHS 색채변환을 이용한 Hue 조합화상의 산화지 최대우도분류 결과는 Landsat-7 ETM+ 7:4:1 조합화상보다 놀은 사용자분류 정확도를 나타냈으며 색상(Hue)과 채도(Saturation)가 명도(Intensity)에 비해 ETM+ 화상의 분광특성을 잘 반영하였다.

• Journal of Welding and Joining
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• 제21권4호
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• pp.56-62
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• 2003

MIG brazing is used for many parts without melting base metal because of high productivity. Pulsed MIG brazing can be used to further reduce heat input and to improve the process stability. However, a significant amount of zinc in galvanized sheet steel is burned off in the area of brazes. Therefore, the brazing method to reduce the heat input is needed. In the brazing for galvanized sheet steel, variable polarity AC pulse MIG arc brazing can be applied to more decrease the heat input by setting EN-ratio adequately. In this research, we studied for the variable polarity AC pulse MIG arc brazing to decrease the heat input by using ERCuSi-A wire. As the result of increasing EN-ratio, melting ratio of base metal and burning off of zinc were reduced in galvanized sheet steel.

• Journal of Advanced Marine Engineering and Technology
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• 제28권4호
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• pp.632-640
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• 2004

The purpose of this study is to clarify the influence of inert gas on the configuration characteristics of premixed turbulent propagating flames of hydrogen mixtures. Inert gas is changed to $N_2$, Ar, $CO_2$ and He keeping the laminar burning velocity of mixtures nearly the same value. A laser tomography technique was used to obtain the flame shape, and quantitative analyses were performed. The result shows that in the wrinkled laminar flame region, the surface area of turbulent flame is slightly dependent on the equivalence ratio and the kind of inert gas. It is also shown the region of convex part of flame toward the unburned gas is greater than that of toward the burned gas regardless of the kind of inert gas.

• 오토저널
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• 제6권2호
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• pp.64-75
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• 1984

In the engine design, it will be able to higher compression ratio and decreasing the cylinder size, if improve the vaporization of fuel and increasing the mass burned fraction in the kerosene engine. Therefore, concave, convex and straight types of hear ring set up neighborhood intake valve into the combustion chamber. The vaporization effect of fuel satisfied by heat transfer from the heat ring, but have need of selection of the location and surface area of the heat ring. Also, combustion duration of the combustion chamber with concave heat ring shorter than combustion chamber with other two types of heat ring, and about 30percent decreases in combustion duration as compared with combustion chamber without heat ring.

• Journal of Oral Medicine and Pain
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• 제7권1호
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• pp.77-85
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• 1982

Identification of blood group from dental hard tissue for the purpose of individual identification of a highly burned corpse would play a significant role in a practical legal medicine. The author conducted a study of blood group with teeth left stading at a high temperature by the method of elution test. The following results were obtained. 1. The blood identifcation from heated dental hard tissue proved to be possible. 2. In cases of heat-treated theeth at $100^{\circ}C$ for 120 minutes, at $150^{\circ}C$ for 120 minutes and at $200^{\circ}C$ for 45 minutes for A.B.O(H) blood group, the identification of blood group was possible. 3. In case of heat-treated teeth, thermostability of blood group was found to be $150^{\circ}C$. 4. The adequate surface area for the detection of blood group was 40-80 meshes.

• Corrosion Science and Technology
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• 제6권3호
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• pp.112-119
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• 2007

This paper presents the importance of corrosion control and protection technology with a real case study of heater tube rupture damaged by High temperature H2S-H2 corrosion in the refinery. The heater was operated at the Hydrocracking unit and the operation temperature and pressure was $340^{\circ}C$ and $18kg/cm^{3}$ respectively. Top side of the convection tube was thinned by high temperature hydrogen sulfide and hydrogen gas as a uniform corrosion and finally ruptured under operation pressure. Damaged area (Convection tube zone) was blocked by protection wall, so it was impossible to inspect with conventional nondestructive examination. Instead the elbow area which is out of the protection wall was inspected regularly to evaluate the corrosion rate of convection tube indirectly. However the operation temperature and the phase of the process stream was different between inside the chamber and outside the chamber. As a result, it caused severe corrosion to the horizontal convection tube inside the chamber comparing to the elbow outside the chamber. Finally convection tube was corroded more rapidly than the elbow and ruptured after 13 years operation. Because of the rupture, the heater was totally burned and the operation was stopped for 3 months until it has been reconstructed. To prevent this kind of corrosion problem and accident, corrosion control should be strengthened and protection technology should be improved.

• 한국방재학회 논문집
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• 제8권1호
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• pp.71-79
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• 2008

산불피해 임지의 식생복원 정도 및 문제점을 파악하기 위하여 산불발생 후 임목피해, 식생회복력 등의 조사 연구를 수행하였다. 소나무 고사율은 수간 및 수관의 피해흔적이 심할수록 피해율이 높았다. 산불피해지에 있어서 수관화에 의해 임분이 전소되는 피해를 받은 지역에서의 식생회복은 대부분이 매토종자 및 맹아에 의한 식생의 회복이 진행되었다. 식생회복과 복원력은 전생 임분의 식생상태와 토심에 따라서 차이가 나타났다. 인공복원의 경우 자작나무 조림지의 경우에는 병충해에 의한 피해가 발생하기도 하였다. 소나무, 해송 조림지의 경우 입지에 따른 생장차이 보다는 조사지내 개체목간의 생장차이가 다소 나타났다.

• 한국측량학회지
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• 제28권1호
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• pp.21-28
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• 2010

산불은 산림의 주요 교란요소중의 하나로써 산림 구조와 기능에 매우 큰 영향을 미치며, 산불피해강도에 따라 피해 후 식생회복 과정이 달라질 수 있다. 산불피해지의 피해강도와 식생회복 과정을 파악하기 위해서는 많은 인력과 예산이 필요하다. 위성영상자료를 이용한 산불피해지의 피해량 분석은 신속한 정보는 물론 대규모 피해지의 객관적인 결과를 원격으로 신속하게 취득할 수 있다. 이에 본 연구에서는 충청남도 청양 예산 지역의 산불발생 전 후 위성영상을 이용한 분류 기법을 통해 연구대상 지역의 산불피해 정보를 산출하고자 하였다. 이를 위해 산불발생 전 후의 다 시기 Landsat 위성영상을 이용한 영상 분류를 통해 산불피해 지역의 면적을 산출하였으며 수치임상도와의 중첩분석을 통해 피해지역 삼림의 수종, 영급, 경급 및 수관밀도별 피해량을 효과적으로 산정할 수 있었으며 분류결과와 NDVI를 이용하여 식생회복을 모니터링 할 수 있었다.

• 한국산림과학회지
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• 제95권3호
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• pp.365-369
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• 2006

본 연구는 강원도 삼척시 검봉산 일대의 침엽수림 지역에서 2000년 발생한 산불피해 후 복원방법에 따라 각각 산림환경이 다른 조림지역과 자연복원지역, 미피해지역에서 설치류의 서식밀도 및 체중 차이를 파악하기 위해 2004년 7월부터 2004년 9월까지 실시되었다. 조사 결과 산불 미피해지역과 자연복원지역 간 설치류의 개체군 밀도는 차이가 없는 반면, 조림지역에서 가장 낮았다. 체중 역시 조림지역이 다른 지역에 비해 낮게 나타났다. 자연복원지역이 조림지역에 비해 설치류의 서식밀도 및 체중이 높게 나타난 것은 지면의 수목잔존물(CWD, coarse woody debris)과 하층식생이 커버(cover)로써 설치류에게 적합한 서식환경을 제공하는 것으로 판단된다.