• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 춘계학술대회 초록집
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• pp.168.2-168.2
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• 2010

The growing market for geothermal heat pump system requires great consideration of quality control and assurance in design and construction. The borehole heat exchanger of GHP system should be sustainable, economical and ecological. Thermal Response Test (TRT) is a useful method for site investigation to obtain reliable data for a optimal system design from the technical and economical aspect. Intensive researches combined with exchange of experiences on an international level within the IEA ECES Annex 21 improved the technology. Major subjects on the interpretation of TRT are development of improved evaluation models, evaluation of the TRT with respect to geological layers and investigation of the influence of ground water. Current status of TRT in South Korea, as well as a new version of the Korean TRT standard test procedure was presented. TRT is mostly used for governmental supported projects with corresponds to more than 100 GCHP systems per year. More than 200 tests are applied, mostly on single U-tube heat exchangers (about 95%). Bentonite is the most common grouting to be used. KIGAM (Korea Institute of Geoscience & Mineral Resources) is also keeping a GIS geological and geothermal database. In the institute also laboratory measurements of rock properties are carried out. About 90% of the laboratory measurements of the rock heat conductivity shows higher values than the in-situ TRT.

• 한국공간정보시스템학회:학술대회논문집
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• 한국공간정보시스템학회 2005년도 GIS/RS 공동 춘계학술대회
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• pp.351-354
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• 2005

NASA's remote sensing market analysis and forecast projects 3.3 billion dollars in 2005. On the other hand, a market research firm expected that world commercial remote sensing imagery, GIS software, Data, and value-added services will generate 8.3 billion dollar in 2007. It has been widely believed that geo-spatial information and service market is growing rapidly and has a huge potential, but it is not clearly understood where it is now and will be heading in the future. Also, it could be a significant question to answer where the industry in Korea fits the best in the world business trends and where it should be strategically heading to take a large market share. Furthermore, if it could be worth being considered as a Korean strategic industry for the future. Instead of pursuing direct answers to the questions, the author will start reviewing general business practices, major business transactions such as merging and acquisitions (M&A's) and initial public offerings (IPO's), and research on market capitalization and revenue of major companies. Throughout the study, a list of common grounds in the market was uncovered and realized as follows: (1) value-added data matters in geo-spatial information and service market; (2) private sector grows faster; (3) characteristics of multi-national industry; and (4) Dependency on major industry. Based on the findings, the author presents a list of recommendations as conclusions.

• 환경영향평가
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• 제2권2호
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• pp.73-83
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• 1993

Increasing concern for the environment in Korea has led to the demand that major policies and large-scale development projects be subjected to detailed impact assessment. This paper reports on the state of data related to the prediction of the environmental impact (EIA) to emphasize the importance of data quality. Environmental impact statements (EIS) consulted with the Ministry of Environment of Korea were analyzed from 1981 through 1992. Many of assessors used existing data and collected supplementary data from field survey. Most of the results of EIA are presented directly or summarized on maps and as graphics. For the national purpose, large source of quality-controlled data such as atmospheric data have been developed, However, there are the deficiency in data to analyze the impact of human activity, and data gaps and incompatibilities among systems. Consequently, the development of data bank systems including computer database and remotely-sensed satellite data is required to improve the quality of data which are relevant to EIA. The data bank system should be organized meaningfully in minimum time with a least cost, and measurement standards must be made explicit. Geographical information systems (GIS) are applicable to the graphic presentation or to the impact prediction model.

• 환경영향평가
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• 제10권2호
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• pp.99-108
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• 2001

This study was performed to develop an information processing system for the sound conservation of soil and groundwater resources. The system contains numerical models and geographic information systems for underground flow and contamination. Multidimensional Finite Element Model for Subsurface Environment (MFEMSE) was invented to analyze underground flow and pollution problems of water and gas phases. Newly developed and conventional models (MODFLOW, MOC3D, MT3D, PMPATH, PEST, UCODE) were integrated with GIS (ArcView) for the construction of an integrated information management system of subsurface environment. This system was applied to the management of three mineral water companies located in clean high mountain basin. Desirable management criteria and operational strategies were suggested using this system. The system was constructed to be applied for the broad sense of decision supporting tools in related topics of this study, so that it can be used not only for the prevention regulations, but also for clean up projects.

• Environmental Engineering Research
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• 제14권4호
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• pp.200-210
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• 2009

The modern era of water quality modeling in the United States began in the 1960s. Pushed by advances in computer technology as well as environmental sciences, water quality modeling evolved through five broad periods: (1) initial model development with mainframe computers (1960s - mid 1970s), (2) model refinement and generalization with minicomputers (mid 1970s - mid 1980s), (3) model standardization and support with microcomputers (mid 1980s - mid 1990s), (4) better model access and performance with faster desktop computers running Windows and local area networks linked to the Internet (mid 1990s - early 2000s), and (5) model integration and widespread use of the Internet (early 2000s - present). Improved computer technology continues to drive improvements in water quality models, including more detailed environmental analysis (spatially and temporally), better user interfaces and GIS software, more accessibility to environmental data from on-line repositories, and more robust modeling frameworks linking hydrodynamics, water quality, watershed and atmospheric models. Driven by regulatory needs and advancing technology, water quality modeling will continue to improve to better address more complicated water bodies and pollutant types, and more complicated management questions. This manuscript describes historical trends in water quality model development in the United States, reviews current efforts, and projects promising future directions.

• 상하수도학회지
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• 제23권5호
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• pp.565-572
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• 2009

Hydraulic modeling is widely used to simulate wastewater flow. The simulated models are used to prevent flood and many other problems associated with wastewater flow in planning or rehabilitating sewer systems. In this study, MAKESW (An engineer, South Korea), MOUSE (DHI, Denmark), and SWMM (XPSoftware, USA) are used to for hydraulic modeling of wastewater in C-city, South Korea and E-city, Iraq. These modeling tools produced different results. SWMM comparably overpredicted runoff and peak flow. In using SWMM, use of accurate data with a high confidential level, detail examination over the target basin surface, and the careful selection of a runoff model, which describes Korea's unique hydraulic characteristics are recommended. Modification of existing models through the optimization of variables cannot be achieved at this moment. Setting up an integrated modeling environment is considered to be essential to utilize modeling and further apply the results for various projects. Standardization of GIS database, the criteria for and the scope of model application, and database management systems need to be prepared to expand modeling application.

• 한국공간정보시스템학회 논문지
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• 제11권4호
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• pp.28-32
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• 2009

차세대 유비쿼터스 웹 환경에서 공공 및 민간의 공간정보를 통합하여 맞춤형 국토정보의 활용을 극대화할 수 있는 기술로서 맞춤형 국토정보 제공기술이 국가 R&D 사업의 일환으로 개발되고 있다. 맞춤형 국토정보 플랫폼 기술을 비롯하여 시각화기술과 모바일 응용기술에 이르기까지 다양한 맞춤형 국토정보 제공기술이 개발되고 있는 것이다. 이런 기술개발과 관련하여, 관련기술의 특허동향을 살피는 특허분석은 기술 개발의 방향과 전략수립에 있어 반드시 필요한 우선적인 과제이다. 이에 맞춤형 국토정보 제공기술의 효과적인 기술개발전략 수립을 위해, 맞춤형 국토정보 제공기술과 관련한 최신의 국내외 관련특허동향을 조사, 분석, 이에 대한 대응전략을 모색하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
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• pp.367-372
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• 2006

The revision of SOLAS, Chapter V, which entered into force on 1 July 2002, has firmly established the electronic navigational chart as part of the international maritime safety system. Its possible recognition as a paper chart equivalent confirms the considerable safety benefits provided by the official Electronic Chart Display and Information Systems (ECDIS). Elaborated by the Author IAMU Model Course on operational use of ECDIS aims to provide answers to some of the most commonly asked questions regarding various types of electronic charts (ENC, RNC, DNC) and electronic chart systems (ECDIS, RCDS, ECS). Following the earlier adoption of the International Convention STCW 78/95 and IMO model training courses, e.g. IMO Model Course on ECDIS [2], to assist in the implementation of the Convention and the associated IMO Assembly resolutions, a number of IAMU Member Universities had suggested that IAMU should develop model training courses on higher academic level to assist in achieving a more rapid transfer of information and skills regarding new developments in marine technology. The provision of model courses could help instructors improve the quality of their existing courses and enhance their effectiveness in meeting the requirements of the IAMU. In this paper the Author presents the results of two IAMU research projects sponsored by Nippon Foundation, titled 'IAMU Model Course on Training in Operational Use of ECDIS' and 'IAMU Handbook on ECDIS'.

• 농촌계획
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• 제27권3호
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• pp.93-102
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• 2021

This study was attempted to provide a scientific basis for the problem of location selection by spatial scale for efficient promotion of projects related to green care farm complex. Location potential assessment system in local government scale consists of two major components from demand-side and supply-side consideration. The demand-side aspect considered the characteristics of potential users, while supply-side aspect used total 18 indices over 8 divisions under 3 fields. For the location potential assessment in district scale, total 8 indices under 3 major divisions were considered based on biological, physical, social, and economic environment. The application results of the location potential evaluation system in local government scale(excluding metropolitan cities) showed high location potential in southern Gyeonggi Province and near Busan Metropolitan City. As a result of applying the district-scale location potential evaluation system to Geumsan-gun, Geumsan-eup, Chubu-myeon, and Jewon-myeon have high potential. Further studies to improve the applicability of the developed indices are recommended by enhancing assessment indices, complementing base data, and reinforcing with spatial analysis.

• 한국습지학회지
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• 제10권2호
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• pp.115-128
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• 2008

도시화 및 산업화 등 인간의 다양한 활동은 하천의 주요 오염원으로 평가되어져 왔다. 현재 하천의 수질에 악영향을 미치는 요인으로 토지의 이용 및 축산업에 따른 비점오염원을 관리하기 위한 다양한 연구들이 이루어고 있으며, 이 가운데 서울을 비롯한 경기도의 상수원을 공급하는 주요 수자원으로 이용되고 있는 팔당호의 관리 방안에 대한 초유의 관심이 모아지고 있는 실정이다. 지금까지 팔당호의 수질개선을 위한 노력의 일환으로 경안천 살리기 운동과 같은 지자체의 노력이 이루어지고 있으며, 상당한 액수의 경비를 소요하고 있는 실정이다. 특히, 경안천 하류에 대단위 인공습지 조성사업을 계획 시행하고 있으며, 이와 더불어 하수처리장의 신설 및 증설이 이루어지고 있어 팔당호 수질의 주요인으로 인정되고 있는 경안천의 수질이 상당 부분 개선될 것으로 전망되어지고 있다. 하지만 지금까지의 그러한 수질개선사업은 근본적인 원인 분석 및 적극적 대안 제시가 아닌 아쉬움을 내포하고 있어 보다 세밀하고 과학적인 분석이 우선시되어져야 한다. 따라서 본 연구에서는 경안천 수질 개선을 위한 수질 및 부하량 분포를 공간적으로 파악함과 동시에 고해상도 위성영상을 통한 대상지의 토지이용행태 분석과 GIS분석을 통한 습지의 입지 가능성을 분석하고, 이들의 종합적인 조건에 부합할 수 있는 인공습지의 위치 및 규모를 산정하고자 하였다. 연구의 진행은 (1) 수질 및 부하량에 대한 공간분석을 통한 최대 오염부하 구역을 선정, (2)고해상도 위성영상을 통한 토지이용 현황 파악, (3) 습지 조성 가능 대상지의 위치 선정, (4) GIS를 이용한 인공습지의 면적 및 체적 산정 등으로 이루어졌다. 기본적으로 인공습지의 규모는 수자원공사에서 제공하고 있는 습지처리효율에 따른 설계기준을 통해 유도되었으며, 그 결과 경안천 일대에 2개 구역(용인하수처리장 부근, 대대천 주북천 일대)에서 인공습지의 조성이 필요하다고 판단되었고, 그 면적은 각각 $127,586m^2$과 $1,647m^2$로 책정되었다.