• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.1
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• pp.26-38
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• 2019

This study is based on the analysis of the characteristics of waterfront scenery. Recently, waterfront development has expanded residentially, commercially and into leisure space. In the development of the waterfront, it is necessary to apply designs suitable for urban and various other waterfront areas. In this study, the natural scenery of the waterfront was researched with respect to the Korean Jingyeong landscape paintings and the main elements of the scenery were analyzed. In this study, 105 painting of Korean Jingyeong landscapes paintings were selected for the analysis of the waterside scenery. The paintings of Jeong Seon were studied to categorize streams topographically into mountainous, upper, middle, lower, and ocean types. In addition, major micro-topography elements, which are 13 water image elements and 13 staffage elements were analyzed. The main waterfront landscape elements are divided into 13 types. The waterfalls were divided into long waterfalls, short waterfalls, cascading waterfalls, and other aspects considered were line stream, curve stream, multi-curve stream, pond, water surface, flow surface, wave surface, rock side, pile sandy side, sandy side. There are 13 kinds of staffage elements, include pine forest, pine trees, fir trees, bamboo trees, willow trees, broadleaf tree, villages, houses, gazebo, boat, bridges, and people. The waterfront landscape by a river area was explained according to each characteristic of the waterfront landscape and staffage, and their changes were analyzed in each area. The 105 paintings were divided into 35 pieces of mountainous streams, 9 upper streams, 5 middle streams, 35 lower streams, and 21 oceans, and the change of each waterfront landscape and staffage was analyzed. Based on the topographical analysis of the waterfront landscape and staffage, the results can be summarized into 5 types of the waterfront landscape. Based on the micro-topographical characteristics of the waterfront landscape styles are as follow. In the mountainous streams, long waterfall and deep forest type are apparent, which depicts deep mountain waterfall scenery, and a multi-stream forest is the scenery of a picnic in the mountains, which is a representative form of mountainous streams landscape. In the upper-middle stream, the water-surface and gazebo type is predominant. In the lower stream, the sandy-gazebo typ scenery is predominant and the sandy depiction is unique to lower stream landscape. Pile sandy-dock type is life scenes where human activity highlighted, is a representative form of the lower stream landscapes. The characteristic of the coastal landscape is the serpentine rock scenery on the beach and the wave-serpentine rock type that forms the main coastal landscape. The study aims to propose significant design elements for a natural waterfront landscape planning based on the analysis of landscape in the paintings of Jeong Seon.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.1
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• pp.42-53
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• 2021

Street trees improve the cityscape and air quality, reduce heat islands, and create wildlife habitats. Hence, they are essential parts of a city's green infrastructure. Therefore, several trees that are well adapted to the urban environment were planted. However, this caused the problem of simple trees being planted around the world. This study is to select more various street trees. To accomplish this, evaluation criteria and detailed indexes were created. The importance was indicated through the Analytic Hierarchy Process. For commercial roads, the priority of landscape characteristics is 0.2640, and among detailed indicators, the priority of shape is 0.1245. For work roads, the priority of landscape characteristics is 0.2496, and among detailed indicators, the priority of shape is 0.1177. For work roads, the priority of characteristics of civil service is 0.2250, and among detailed indicators, the priority of shape is 0.1177. For general roads, the priority of maintenance characteristics is 0.2479, and among detailed indicators, the priority of shape is 0.1062. For historical and cultural roads, the priority of regional characteristics is 0.3488, and among detailed indicators, the priority of regional characteristics is 0.1643. For ecological roads, the priority of ecosystem characteristics is 0.3488, and among detailed indicators, the priority of the diversity of species is 0.1643. For automotive-only roads, the priority of the ecosystem characteristics is 0.4639, and among detailed indicators, the priority of reducing emissions is 0.1643. This study will provide objective criteria for the selection of street trees.

• Journal of the Korean Society for Nondestructive Testing
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• v.29 no.1
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• pp.1-9
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• 2009

This paper presents stress distribution around a central crack tip in a tensile plate using phase-shifting photoelasticity and a power series stress function. Isochromatic data along the straight lines far from the crack tip were obtained by phase shifting photoelasticity and were used as input data of the hybrid experimental analysis. By using the complex-type power series stress equations, the photoelastic stress distribution fields in the vicinity of the crack and the mode I stress intensity factor were obtained. With the help of image processing software, accuracy and reliability was enhanced by twice multiplying and sharpening the measured isochromatics. Actual and reconstructed fringes were compared qualitatively. For quantitative comparison, percentage errors and standard deviations of the percentage errors were calculated for all measured input data by varying the number of terms in the stress function. The experimental results agreed with those predicted by finite element analysis and empirical equation within 2 percent error.

• Clean Technology
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• v.13 no.4
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• pp.281-286
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• 2007

VOCs from the heat recovery ventilation system (total heat exchanger) are measured in this study. Two different types of element (L and M type) from heat recovery ventilating system are tested to study the intial release characteristics of VOCs under KS cooling and heating standard conditions. VOCs are measured for the various flow rates and different operating times. Considering errors in the test method and the measuring instrument, the tested heat recovery ventilating systems was found to release 6 major VOCs, such as acetic acid, 2-butanone (MEK), 2-(methylthio )ethylamine, toluene, styrene, and x-acids (Ion 57). The concentrations of released VOCs are not quite much affected by operating conditions. The results show much larger VOCs concentrations in the cooling mode than in the heating mode, due to the high operating temperatures.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2000.05a
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• pp.273-278
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• 2000

본 연구는 한국어 기능 범주(functional category)의 처리를 살펴보기 위하여 실문법증 환자를 대상으로 실시되었다. 일반적으로 수형도에서 기능 범주는 보문소구(Complementizer Phrase), 시제구(Tenxe Phrase), 일치소구(Agreement Phrase)의 순으로 구성되어 있다. 본 실험은 Grodzinsky(1997)의 수형도 가지치기 가설과 실문법증의 엄밀성 척도를 바탕으로 한국어 기능 범주의 처리에 있어서도 두 가지 가설의 적용이 타당한지 여부를 검증하기 위해 실시되었다. 실험 1은 일치소(Agr)의 처리를 살펴보기 위하여 실시되었는데, 국어의 존칭 선어말 어미를 중심으로 살펴보았다. 국어의 존칭선어말 어미는 크게 '-시-'삽입에 의한 존칭과 다른 어휘로 대체하는 보충법에 의한 존칭으로 구분된다. '-시-'삽입에 의한 존칭은 AgrP의 범주로 보충법에 의한 존칭은 동사구(Verb Phrase)의 범주로 설정하여 문법에 어려움을 보이는 실문법증의 경우 어휘부에 혹하는 보충법에 의한 존칭을 문법범주에 속하는 '-시-'삽입의 존칭보다 더 잘 할 것으로 가정하였다. 실험 2는 AgrP의 범주인 '-시-'선택의 장애가 TPqja주인 시제 선택에 역시 영향을 미칠 것이라는 가정아래 설계되었다. 수형도 상에서 '-시-'는 일치소(Agr)로서 시제(TP)의 아래에 위치하므로 실험 3은 '-시-'삽입 존칭과 시제에서 어려움이 보문소(CP)의 선택에 역시 영향을 미칠 것이라는 가정하에서 실시되었다. 실험 1의 결과 '-시-'삽입에 의한 존칭을 처리하는데 보충법에 의한 존칭보다 어려움을 보였다. 실험 2의 결과 '-시-'삽입 존칭에 어려움을 보인 환자는 시제 선어말 어미를 선택하는데도 어려움을 보임이 확인되었다. 실험 3 역시 실험 1과 실험2에서와 동일하게 처리의 어려움을 보였다. 이러한 실험 결과들은 국어의 존칭과 시제 선어말 어미가 통사부에서 구(XP)와 결합하여 새로운 구를 형성하는 통사적 접사로 해석할 수 있으며 Grodzinsky의 가설을 지지하는 결과를 보여 줌으로서 국어에서도 AgrP, TP, CP 사이의 통사적 위계가 있음을 뒷받침하는 증거가 된다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.485-487
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• 1999

본 논문에서는 온라인 필기체 수식 인식을 위한 순차적인 구조 분석 방법을 제안한다. 제안된 방법은 캐블릿상에서 필기된 수식에 대한 심볼 인식 결과와 각 심볼의 Bounding Box이 좌표를 입력받아서 필기 순서를 기반으로 순차적으로 수식의 구조를 해석한다. 그래프 내의 이웃하는 두 노드 사이의 관계를 결정하기 위해서 심볼의 사용에 관한 표기 정보와 6단계 관계 결정 규칙을 사용하여 노드들 사이에 생성될 수 있는 에지의 수를 최소화하고 BackTracking을 피했다. 제안 방법의 성능을 평가하기 위해 100개의 테스트 샘플에 대해 구조 분석 실험을 수행하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.190-192
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• 2002

EJB(Enterprise Java Bean)컨테이너에서 보안은 크게 사용자 인증과 빈의 메소드 호출에 대한 접근 제어로 구분된다. 기업이 가지고 운영 중인 다양한 보안 플랫폼 상에 EJB 컨테이너가 구동되기 때문에 EJB 컨테이너는 개별 보안 시스템과 독립적인 방법으로 빈에 대한접근 제어 방법을 정의하고 있다. 본 논문에서는 E504(Enterprise 504) EJB 컨테이너 시스템에서의 사용자 인증 및 접근 제어 방법에 대해 논의한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.198-201
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• 2003

사용자의 요구 사항을 정확히 분석하여 효과적으로 개발 단계에 적용하기 위해 문서간의 의존성, 즉 상·하위 문서간의 연계성 등을 측정할 수 있는 방법에 대한 연구가 절실한데 이를 위해 적게는 두 용어가 얼마나 밀접한 관련이 있는가를 나타내는 용어간의 유사도 정보가 중요시된다. 이에 본 논문은 임의의 두 문서에 대한 다양한 유사도 측정방법을 통하여 최적의 유사도를 알아보고 두 문서간 유사여부를 검증하기 위해 Neural Network을 적용하였다. 이러한 유사도 측정과 검증 방법은 분산환경에서 입력되는 요구사항 문서들을 효율적으로 분류, 관리해 줄 수 있으며 사용자 요구사항 분석과 전체 Project 수행에 좋은 기초자료를 제공해 줄 수 있다.

• Economic and Environmental Geology
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• v.46 no.3
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• pp.267-278
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• 2013

The East African Rift System(EARS) is known to be hosted epithermal Au-Ag deposits, and the best-known example is Main Ethiopian Rift Valley(MER) related to Quaternary bimodal volcanism. Large horst-graben system during rifting provides open space for emplacement of bimodal magmas and flow channel of geothermal fluids. In recent, large hydrothermally altered zones(Shala, Langano, and Allalobeda) and hot spring related to deeply circulating geothermal water have been increasing their importance due to new discoveries in MER and Danakil depression. The hot springs in Shala and Allalobeda occur as boiling pool and geyser on the surface, whereas some areas didn't observe them due to decreasing ground water table. The host rocks are altered to quartz, kaolinite, illite, smectite, and chlorite due to interaction with rising geothermal water. The hot springs in MER are neutral to slightly alkaline pH(7.88~8.83) and mostly classified into $HCO_3{^-}$ type geothermal water. They are strongly depleted in Au, and Ag, but show a higher Se concentration of up to 26.7 ppm. In contrast, siliceous altered rocks around hot springs are strongly enriched in Pb(up to 33 ppm, Shala), Zn(up to 313 ppm, Shala), Cu(up to 53.1 ppm, Demaegona), and Mn(up to 0.18 wt%t, Shala). In conclusion, anomalous Se in hot spring water, Pb, Zn, Cu, and Mn in siliceous altered rocks, and new discoveries in MER have been increasing potential for epithermal gold mineralization.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.31 no.2
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• pp.127-141
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• 1995

The distribution of water mass in Deukryang Bay was investigated using observational data obtained on July 12 (spring tide) and 19 (neap tide) in 1994. In characteristics of water mass at the bay the area is divided into three ones by a vertical attenuation coefficient k and a stratification parameter, log sub (10) (H/U super (3)), was H is depth, and U mean velocity in the bay. The contour of k=0.6 has a similar distribution to the isobath of 10m depth in spring tide, and of 5m depth in neap tide, respectively. This indicates that the water mass in the area between the isobath of 5m and 10m depth is changed by tidal periods. The stratification parameter corresponding to k=0.6 was 2.1~2.2. In the shallow water of 5m depth the characteristics of water mass was distributed in temperature of 25.5~31.$0^{\circ}C$ and salinity of 32.8~33.8PSU(Practical Salinity Unit), the temperature was high and the salinity distributed widely. In the deep water of 10m depth it was the temperature of 22.0~29.5$^{\circ}C$ and the salinity of 33.0~33.6PSU, the temperature was low and the salinity distributed narrowly. In the middle depth water of 5m to 10m depth, the temperature of 22.0~30.$0^{\circ}C$ and the salinity of 32.8~33.5PSU, its values showed the middle between the values of the deep area and the values of the shallow area.