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

• Journal of Korean Society of Coastal and Ocean Engineers
• /
• v.16 no.3
• /
• pp.162-170
• /
• 2004

On the basis of the radiotracer technology and the related equipments which have been developed for its industrial application through the nuclear long-term research project, a radiotracer study on sediment transport was carried out as a part of the development of the radiotracer technology for a coastal environment. The crystalline material doped with iridium having a similar composition and specific gravity as those of the bedload sand collected from the research area was produced by the oxide-route method. A radioisotope container was specially designed to inject the radiotracer from 1 m above the sea bedload without radioactive contamination during the transport from the nuclear reactor at KAERI. The position data from the DGPS and the radiation measurement data were collected concurrently and stored by means of the application software programmed with the LabVIEW of the National Instrument. The position data was reprocessed to represent the real position of the radiation probe under water and not that of the DGPS antenna on board. The time dependency of the spatial distribution of the sediment was studied in the area through three tracking measurements after the iridium glass was injected. This trial application showed the potential of the radiotracer technology as an important role for maintaining and developing the coastal environment in the future.

• Archives of design research
• /
• v.19 no.5 s.67
• /
• pp.171-180
• /
• 2006

The purpose of this study is to discover the plans for Yangyeongsi in Daegu, one of the most traditional streets and a tourist spot in South Korea, by preserving the historical place, reviving the historical characteristics and identity, revitalizing the uniqueness of the location, and developing the environment. This paper also illustrates the problems of the place through a investigation into its current state in order to promote the district and conduct a fundamental research framework to suggest future development methods and directions based on the problem statements. Daegu Yangyeongsi was chosen through frequency analysis and a survey asking for a suitable location and local characteristics to be developed for the local promotion through the field investigation of 158 cultural assets registered in the local government. This survey was conducted through the development process of the Regional Design Innovation Center to revitalize the traditional streets and places of interest. Through this investigation, 19 sites and traditional streets, which can be cultural resources for sightseeing and contribute to the local promotion, were extracted. Yangyeongsi, was selected from the finalists. The research methodology will be 1) to identify things for improvement potentiality through an in-depth analysis of Yangyeongsi, 2)to examine the mutual relationship between the revitalization strategy of Yangyeongsi and the city promotion strategy, and 3) to integrate the problems and improvements based on the results of the analysis. The notion of SWOT analysis synthetically considering the elements of opportunity and intimidation, strength and weakness to come up with the development direction was introduced to discover the local characteristics of Yangyeongsi and deduce the problem statement through the state analysis. Based on these results, the future development method and direction will be suggested in this paper through the revitalization study of Yangyeongsi.

• The Journal of Engineering Geology
• /
• v.28 no.3
• /
• pp.465-473
• /
• 2018

The application of singular value decomposition (SVD) filtering is examined for attenuation of the ground-roll in land seismic data. Prior to the SVD computation to seek singular values containing the highly correlatable reflection energy, processing steps such as automatic gain control, elevation and refraction statics, NMO correction, and residual statics are performed to enhance the horizontal correlationships and continuities of reflections. Optimal parameters of SVD filtering are effectively chosen with diagnostic display of inverse NMO (INMO) corrected CSP (common shot point) gather. On the field data with dispersion of ground-roll overwhelmed, continuities of reflection events are much improved by SVD filtering than f-k filtering by eliminating the ground-roll with preserving the low-frequency reflections. This is well explained in the average amplitude spectra of the f-k and SVD filtered data. The reflectors including horizontal layer of the reservoir are much clearer on the stack section, with laminated events by SVD filtering and subsequent processing steps of spiking deconvolution and time-variant spectral whitening.

• Resources Recycling
• /
• v.18 no.5
• /
• pp.63-71
• /
• 2009

Recyclable wastes coming into material recovery facilities(MRFs) is mostly packed by plastic bag or sack bag. Bag rupturing device is essential to improve capacity and efficiency of MRFs. Bag opening works of MRFs is mostly done by numerous workers and shredder-type bag rupturing device. It often makes a problems; decreased capacity, shredded recyclables, worker safety by explosion and broken glasses, etc. In the present work, bag rupturing device with octagonal rotating blade drums has been developed to solve the existing problems and environment assessment is also performed during operation of the device. Capacity of the device was about 5.6 ton/hr at 8.2 rpm of drum revolution speed and 1.25 m/min of belt conveyor speed. It satisfied initial designed capacity(5.0 ton/hr) and max. capacity 8.8 ton/hr was achieved at 12.5 rpm of drum revolution speed and 1.50m/min of belt conveyor speed. Bag rupturing efficiencies on outer and inner bag were obtained at 100% and about 95.6% as average, respectively and original form of glass bottles in the bag was maintained without broken by about 96.5%. This result shows that the safety in hand sorting by the workers could be improved. As result of environmental assessment on the noise, vibration and particulates, the measured levels on noise, vibration and particulates show the below standard regulatory limits. It could be concluded that the problems of existing devices in MRFs could be solved by adopting the bag rupturing device with octagonal rotating blade drums in on-site operation.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2018.10a
• /
• pp.54-54
• /
• 2018

숨은물뱅듸 산림유전자원 보호구역은 해발 950 m 이상 지역의 습지로서 오름으로 둘러싸인 넓은 웅덩이 형태로 환경부 멸종위기 2급 야생식물인 자주땅귀개를 비롯한 다양한 습지 식물과 이를 둘러싸고 있는 산림지역을 포함하여 산림청에서는 산림유전자원 보호구역으로 지정 관리되고 있다. 본 조사는 숨은물뱅듸 산림유전자원 보호구역을 대상으로 식물상을 조사하여 식물종 다양성을 보존하기 위한 기초자료를 만들기 위해 실시하였다. 본 연구는 2018년 7월 24일부터 8월 28일까지 총 4회에 걸쳐 현장조사를 통하여 표본을 채집하고 기록하여 정리하였다. 그 결과, 숨은물뱅듸에 자생중인 식물은 양치식물 8과 11속 17종 17분류군, 나자식물 2과 2속 2종 2분류군, 피자식물 56과 121속 167종 5변종 1품종 173분류군 총66과 134속 186종 5변종 1품종의 총 192분류군이 조사되었다. 이 중 환경부 멸종위기야생식물은 자주땅귀개 1종이 확인되었고, 제주특산식물 6분류군, 한국특산식물 2분류군이 확인되었다. 식물구계학적특정식물은 총37분류군이며 V등급 5분류군, IV등급 5분류군, III등급 12분류군, II등급 5분류군, I 등급 10분류군이 확인되었다. 한국의 적색목록 식물은 위기(EN) 1분류군, 취약(VU) 1분류군, 준위협(NT) 1분류군, 관심대상(LC) 6분류군, 미평가(NE) 3분류군으로 나타났다. 조사된 식물들 대상으로 생활형을 분석해보면, 휴면형은 Ch 47분류군으로 가장 많이 나타났고, G(30분류군), MM(24분류군), HH(23분류군) 순으로 나타났다. 번식형은 R5가 101분류군, 산포기관형은 D4가 84분류군, 생육형은 e가 89분류군으로 가장 많이 나타났다. 반면, 외래식물 1분류군이 출현한 것으로 보아 숨은물뱅되는 아직까지 보전이 잘 되어 있고, 식물종다양성이 우수하며 식물학적으로 가치가 매우 높은 것으로 판단되었다.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.41 no.1
• /
• pp.34-43
• /
• 2013

This study aimed to research and analyze the real condition of topsoil management of river development field as a significant case among domestic development fields for topsoil preservation. Through survey with experts, we understood the real condition and problems of topsoil management during river development. In order to verify this, we analyzed the characteristics of soil before and after development focusing on the rivers recently completed as an ecological river restoration project, supervised by Ministry of Environment among domestic river improvement projects. The study results are like below. First, experts preferred collecting and reusing topsoil as the best method to maintain and improve soil for plant growth. Second, realistically collecting and reusing topsoil is not fully conducted due to economical issues and inconvenience in construction. In the soil condition, third, the contents of elements necessary for plant growth like organic matter and total nitrogen declined overall after development.

• Journal of the Korean Society for Library and Information Science
• /
• v.50 no.3
• /
• pp.215-247
• /
• 2016

This study was performed in order to derive components that librarians think preferentially necessary and realistically important when applying the NCS 'Library and Information Administration's duty' to the library working environments. It was possible by evaluating and analyzing the importance and utilization of ability unit and its element which are the components of NCS 'Library and Information Administration's duty'. First, ability units of 'User Information Services', 'Reading and Culture Programs' were higher in importance and utilization at the same time. Ability units of 'Library and Information Practical Research Perform', 'Library and Information Curation', 'Library and Information System Operation' were lower in importance and utilization when we evaluate the importance and utilization of ability unit and its element which are the components of NCS 'Library and Information Administration's duty'. Second, components of 'Reading and Culture Programs', 'User Information Service', 'Library and Information Collection' were higher in the order, and components of 'Library and Information Curation', 'Library and Information System Operation', 'Library and Information Practical Research Perform' were found lower in demands as the desirable level and the current level appear less common when we analyzed the demands on the duty components utilizing Borich requirements analysis model. Third, six ability units of 'Reading and Culture Programs', 'User Information Services', 'Library and Information Collection', 'Library and Information Services Marketing', 'Library and Information Preservation', 'Library and Information Use Analysis' were derived as priority components when we analyzed the priority of the duty component (ability unit) utilizing The Locus for Focus model.

• Journal of the Korean Society of Safety
• /
• v.12 no.4
• /
• pp.214-219
• /
• 1997

The mechanical seals, which are installed in rotating machines like pump and compressor, are generally used as sealing devices in the many fields of industries. The failure of mechanical seals such as leakage, crack, breakage, fast and severe wear, excessive torque, and squeaking results in big problems. To identify abnormal phenomena on mechanical seals and to propose the proper monitoring parameter for the failure of mechanical seals, sliding wear experiments were conducted. Acoustic emission, torque, and temperature were measured during experiments. Optical microstructure was observed for the wear processing after every 10 minute sliding at rotation speed of 1750 rpm and scanning electron microscopy was also observed. Except for the initial part of every experiment, the variation of acoustic emission was well coincided with torque variation during the experiments. This study concludes that acoustic emission and torque are proper monitoring parameters for the failure of mechanical seals. The intensity of acoustic emission signals is measured in root mean square voltage. Temperature of sealing face will be used as a parallel parameter for increasing the reliability of monitoring system.

• Journal of Korean Society of Forest Science
• /
• v.88 no.2
• /
• pp.157-168
• /
• 1999

This paper analyzed vegetation and land use classification, slope and permanent preservation and legal reserves on the farm Jangada and Jamaica-Mato Grosso do Sul, Brazil, using satellite image for assisting the planning of planting Eucalyptus spp. This part of the State of Mato Grosso do Sul represents an important geopolitcal area, since it is located on the borders of Bolivia and Paraguay. Also exportation of goods can be achieved through hydrovias extending to Buenos Aires, Argentina-through the Paraguay River. Also there are road and railroad connection which link the soutreastern part of Brazil to the Andean countries. The vegetation map from sheet SF 21-Campo Grande of the RADAMBRASIL Project was used as the basis for the preliminary interpretation of coverage, and complemented by a visit of the field. After the initial interpretation of the image, definition of classes of use and land occupation were made, and files of spectral signatures were created. On the farms Jamaica and Jangada Open Arboreal Savanna and Grass Savanna are the predominant physiognomies occupying 68% of total area. In spite of the results being satisfactory at the present moment, the development of this project should be revised and adjusted based on the evaluations already made, including a greater detailing of environmental components, principally with respect to soil and topography.