• Journal of the Korean Institute of Landscape Architecture
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• v.46 no.5
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• pp.93-107
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• 2018

The concepts of geotourism and geoparks have emerged due to the paradigm shift in tourism and the increased recognition of geosites and geoheritage as legacies that must be protected and preserved. The number of geoparks designated by UNESCO and national governments is increasing globally. The purpose of this paper is to propose directions for enhancing Jeju Geopark to perform as a geological educational venue. This study reviewed the present conditions of the education and communication, the media, and the facilities of the geopark with respect to the required conditions to be effective for geological education. Data surveys, field surveys, visitor questionnaires, and interviews were conducted to examine the educational and guidance system of the geopark, the physical space configuration, and the operation and management methods. The research process is as follows. First, the study analyzed the status of the education and communication in Jeju Geopark, according to the criteria of the UNESCO GGN, using data acquired from the survey. Second, the study analyzed and evaluated the educational and communication facilities, and media, focusing on four aspects of the geopark: the geo-trail, spatial composition and layout, communicational and educational facilities, and the system and design of signboards. Third, the study assessed the perception and satisfaction of visitors to the geopark. Fourth, the study summarized the potential and limitations of the Jeju Geopark through in-depth interviews. The four analyses showed that enhancements in the exploration environment, communication, media, and operation and management system are all necessary for effective geological education. Based on these results, this study suggests directions for enhancing the geopark in the four following aspects. Management and maintenance must be improved to meet UNESCO criteria, while the improvements in the visiting environment quality, the supplementing of communication and facilities, and enhancements in the organization and system of operation and management also must be taken on.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.05d
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• pp.365-370
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• 1996

본 논문은 GIS를 이용하여 원자력 발전소 건설을 위한 최적의 부지 선택 방안을 연구한 것이다. 근래 고도 경제 성장에 따라 전력 사용량이 날로 증가되고 있으며 이에 따라 발전소의 추가 건설이 시급한 실정이다. 그러나 발전소 건설에 필요한 적지가 희소한 실정이며 정부의 국토이용 계획, 각종 개발 제한 사항에 의해 갈수록 제약을 받게 되어 부지 선정에 많은 어려움이 예상된다. 본 논문에서는 기존의 원자력 발전소 입지선정 절차를 근간으로하여 부지평가에 영향을 주리라 예상되는 지질, 골재원, 수송조건, 부지표고, 용수원, 해상조건, 접안조건 및 주변환경, 인구 분포 등의 부지평가 요소들을 중심으로 하고, GIS를 이용한 부지평가 항목의 분석을 통하여 원자력 발전소 부지의 최적 후보지를 결정하는 개념적 방안을 제시하였다.

• The Journal of Engineering Geology
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• v.27 no.4
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• pp.417-427
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• 2017

This study aims to present cases of rock slope failures caused by geological structures. Status of slope failures, results of cause analysis and stabilizing methods are introduced, focusing primarily on rock slope failures caused by specific geologic structures, such as intersection of faults infilled with clay, foliation and fault shear zone by dike intrusion and deep-seated clayey layer along lithologic boundary. Detailed geological survey, geophysical exploration and boring survey were conducted for cause analysis. Stabilizing method to prevent further slope failures and to ensure long-term stability of slopes were established, considering characteristics of geological structures, types of failure and geological conditions.

• Proceedings of the KSEG Conference
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• 2004.03a
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• pp.17001-17013
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• 2004

암석의 물리적 성질이란 암석이 공학적으로 보편화 된 조건인 상온, 상압 하에서 고유하게 지니고 있는 특성으로 비중, 공극율, 강도 등이 있다. 물리적 성질은 무결암을 대상으로 주로 실험실내에서 정해진 방법에 따라 정량적으로 측정할 수 있으며, 특정 암석에서 측정한 여러 가지 간은 해당 암석의 특성을 고유하게 나타내고 있으므로 이를 암석의 물질 정수라고도 한다. 현재 암석의 물리적 성질을 측정하기 위한 방법으로는 국제암반공학회(ISRM. International Society for Rock Mechanics)가 제안한 방법(Brown, 1901)이 가장 널리 적용되고 있다. (중략)

• Proceedings of the KSEEG Conference
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• 2003.04a
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• pp.238-240
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• 2003

본 연구는 덕음광산 광미시료에 대한 각 pH별 중금속 거동 및 본 지역에서 중금속과 밀접한 관계를 가지는 토양광물인 Mn-함유광물의 용해도의 상관성을 규명하고자 한다. 본 연구를 통하여 Mn-함유광물의 용해도에 따른 중금속의 거동간의 상관관계를 알아봄으로서 광산 주변 지역의 지구화학적인 변화를 예측하고 오염지역 특성을 정확하게 이해할수 있도록 정보를 제공하고자 하였다. (중략)

• Proceedings of the KSEEG Conference
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• 2003.04a
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• pp.245-248
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• 2003

현재까지 폐석 및 광미의 환경적 영향에 대한 많은 연구들은 중금속원소 등의 총 농도 분석 및 화학용매를 이용한 부분추출을 통해 중금속의 존재형태를 규명하는데 중점을 두었다. 하지만 대부분 지표환경에 제한되어 중금속 원소들의 오염원으로서의 잠재성, 즉 심도별 중감속원소 함유 광물의 pH 및 산화ㆍ환원 조건변화에 따른 용해도 특성과 이동성 등에 대한 정보를 제공하기에는 미흡하다. (중략)

• Proceedings of the KSEEG Conference
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• 2003.04a
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• pp.269-272
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• 2003

하천에 토사가 유입되는 가장 중요한 요인은 주변 지역의 사면에서의 토양의 침식작용이며 이러한 현상은 다양한 요인들에 의해 영향 (사면경사, 사면식생, 토양 입도, 사면거칠기 등)을 받지만 주로 물, 특히 강우에 의해 크게 좌우된다. 그러므로 정확한 강의 양과 강우 강도, 이에 따른 토양의 침식량을 정량화하는 것이 중요하다. 이번 연구에서는 이러한 다양한 조건에 따라 토양의 침식이 어떠한 특성을 갖고 발생하는지를 파악하고자 하였다. (중략)

• The Journal of Engineering Geology
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• v.32 no.4
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• pp.535-545
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• 2022

Improving the stability of the ground in seismic design requires an understanding of the dynamic behavior of the ground under seismic loads. The shaking table test is an important methodology to provide this understanding. This study aimed to assess the influence on boundary conditions, as they are among the most important factors affecting the test. This was achieved by testing the influence of boundary conditions on the seismic responses of model slopes at different locations in the testing apparatus. A model slope was fabricated at different locations in a laminar shear box, and the influence of the boundary conditions was then measured. Each model slope was created at 100, 50, and 25 cm from the soil wall, and sine wave seismic loads of the same size were inputted. The results confirmed that the acceleration was amplified by the influence of the boundary in the case of the slope being located 25 cm from the boundary, whereas the influence of the boundary conditions decreased when the slope was located at 50~100 cm.

• The Journal of Engineering Geology
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• v.32 no.1
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• pp.143-155
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• 2022

In this study, the response acceleration amplification according to different conditions was analyzed by changing the boundary condition of the soil called LSB (Laminar Shear Box), which is placed on a 1 g shaking table for earthquake simulation experiments. Experiments were carried out with different boundary conditions by fixing both sides of the LSB, and two samples were tested by installing an accelerometer at the same location. In addition, using DEEPSOIL v7 program, a one-dimensional ground response analysis was performed to compare and analyze with the free field condition. As a result, it was confirmed that the acceleration was amplified as it went from the lower layer to the upper layer, and as a result of comparing it with the ground response analysis, it was confirmed that it appeared similar to the analysis under the free field condition. As a result of the SA (Spectrum acceleration) analysis, a result similar to that of the ground response analysis was obtained, and in the case of fixing, it was confirmed that the PSA (Peak Spectral Acceleration) was further amplified.

• Korean Journal of Food Science and Technology
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• v.25 no.6
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• pp.794-800
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• 1993

A lipid producing yeast was screened from leaves of Albabiscus and was identified as a Rhodotorula graminis SW 214. During the shakining incubation of 8 days at $25^{\circ}C$, the yeast produced extracellular lipids of 7.3g/l of the media. The relative concentration of carbon and nitrogen sources in the media influenced the extracellular lipid production greatly. When with nitrogen sources in the media were almost exhausted for growth of the yeast the sufficient carbon sources, the lipid production proceeded vigorously. Eight days of batch cultivation with 8% glucose, 2.5g/l of yeast extract, $KH_{2}PO_{4}(1g/l)\;MgSO_{4}\;(0.2g/l)$ and pH 6 gave maximum biomass and extracellular lipid production of 8.05g/l and 8.89g/l, respectively. The acid value, saponificatio value, the iodine value, ad the unsaponifiable matter of the extracellular lipids of Rhodotorula graminis SW 214 were 2.6, 534, 5.1 and 2.4, respectively. Lipid was constituted 75.2% triglyceride, 5.9% free fatty acid, 10.8% phospholipid, 4.9% esterified sterol and 3.3% free sterol. Major fatty acids found were 3-hydroxypentadecanoate, 3-hydroxyhexadecanate, trans-9-octadecanate, cis-9-hexadecanate (hydroxy palmitic), 15-methylhexadecanate (oleic), 18-methylno-nadecanate, octadecanate (stearic) and 3-hydroxytridecante.