• 정보관리연구
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• 제34권4호
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• pp.63-84
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• 2003

본 연구는 정부의 원자력 분야 정보 인프라 구축사업의 지원으로 이루어진 연구로서 한국원자력연구소가 국가 원자력 정보센터로서의 기능을 적극 수행하기 위하여 원자력분야 학술정보통합정보관리시스템인 NUCLIS21(Nuclear Information System21)을 구축한 프로젝트이다. 본 시스템은 웹기반의 이용자 중심 단일 인터페이스를 제공하여 국가 원자력 분야 정보기반구축은 물론 기존 정보센터의 정보관리시스템을 개선하는데 목적이 있다. 또한 구축된 시스템은 원자력 분야 학술정보 통합정보관리시스템으로서 크게 두 가지로 먼저 경영정보시스템(MIS)과의 연계모듈과 6개의 하위시스템으로 즉, OPAC과 연동되는 통합검색 시스템, My Library 시스템, 정보수집 시스템, 편목 시스템, 정보제공 시스템, 연속간행물 시스템으로 구성된다. 그 특징은 경영정보시스템(MIS)과 연계하여 연구 프로젝트 등 연구관련 정보를 반입하여 관련 정보를 제공함으로써 이용자의 연구 주제별 맞춤정보, 상호작용, 후속 서비스 등이 가능하도록 구성하였다. 구축결과 시스템의 평가는 만족도를 조사하였는데 이용자 만족도는 정보제공의 충실성은 75.7% (200명), 신속성은 62.1% (164명), 편리성은 78.4% (207명)가 대부분 만족한다고 응답하여 전체적인 시스템 만족도는 비교적 높게 나타났다.

• 한국해양공학회지
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• 제31권1호
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• pp.36-46
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• 2017

Most of the studies on the hydraulic characteristics of wave-current interaction have used 2-D hydraulic experiments or 2-D numerical simulations. However, it is difficult to understand the wave-current interaction found in actual estuaries using these. Therefore, a numerical water tank was constructed in this study to perform simulations involving a 3-D river mouth. The result showed a change in the water surface at the river mouth from the wave-current interaction. With an increase in the ratio ($V_c/C_i$) between the river current and wave celerity, the wave height and mean water level of the river increased at the wave and current meeting point. A higher $V_c/C_i$ caused a stronger wave-current interaction and increased the turbulence kinetic energy. Thus, the wave height attenuation became larger by the wave-current interaction with a higher $V_c/C_i$. In addition, it was possible to understand the flow characteristics in the vicinity of the river mouth as a result of the wave-current interaction using the mean flow and mean time-averaged velocity at the mid-cross section of river.

• Journal of Advanced Marine Engineering and Technology
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• 제39권10호
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• pp.1054-1061
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• 2015

The International Maritime Organization (IMO) has been regulating emissions by making mandatory the compliance with institutions aimed at protecting air quality such as the Energy Efficiency Design Index (EEDI), Ship Energy Efficiency Management Plan (SEEMP) and Tier III. Under the circumstances, one of the response measures considered to be the most feasible is the replacement of existing marine fuel with Liquefied Natural Gas (LNG). The industry has been preemptively building infrastructure and developing and spreading engine technology to enable the use of LNG-fueled ships. The IMO, in turn, recently adopted the International Code of Safety for Ships Using Gases or Other Low-Flash-Point Fuels (IGF Code) as an institutional measure. Thus, it is required to comply with regulations on safety-related design and systems focused on response against potential risk for LNG-fueled ships, in which low-flash-point fuel is handled in the engine room. Especially, the Standards of Training, Certification and Watchkeeping (STCW) Convention was amended accordingly. It has adopted the qualification and training requirements for seafarers who are to provide service aboard ships subject to the IGF Code exemplified by LNG-fueled ships. The expansion in the use of LNG-fueled ships and relevant facilities in fact is expected to increase demand for talents. Thus, the time is ripe to develop methods to set up appropriate STCW training courses for seafarers who board ships subject to the IGF Code. In this study, the STCW Convention and existing STCW training courses applied to seafarers offering service aboard ships subject to the IGF Code are reviewed. The results were reflected to propose ways to design new STCW training courses needed for ships subject to the IGF Code and to identify and improve insufficiencies of the STCW Convention in relation to the IGF Code.

• KIEAE Journal
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• 제16권5호
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• pp.73-79
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• 2016

Purpose: In order to improve the energy performance of existing buildings, so actively promoted green remodeling business. Also, improvement of the performance of envelope system of apartment housing is an absolute. The purpose of implementation of the data base and application plan of the envelope system for green remodeling of apartment housing. Method: For this study, It proposed a classification system of green remodeling envelope system constructed actual to select the applicable representative method and input material of apartment housing for green remodeling. In this study, divided into construction waste processing stage and production phase of the material for the boundary of the system, and implementation the classification system of the envelope system for applicable green remodeling. For this, established 6 environmental impact categories database. Result: As a result of various suggestions were available for case study research, alternative combinations of existing combinations than six kinds of environmental impact insulation system with superior input materials combining 96 kinds, window system, 12 kinds for determining the applicability of the established database. Depending on the account for a large proportion if compared to the detailed analysis of the environmental impact resulting from the production phase and disposal phase was analyzed that the operating management of the necessary input materials. Is considered that the economic performance and integrated energy performance required by the applicable public housing green remodeling evaluation techniques considered for future improvements insulation sheath.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2011년도 추계학술발표대회 논문집
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• pp.376-382
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• 2011

Since the Industrial Revolution has caused global change by using of a fossil fuel, a reckless and growth-oriented development. A global mean temperature since 19th century has climbed up 0.4~$0.8^{\circ}C$. Our country, afterwards, global warming has increased the temperature every season. After The Kyoto Protocol regarding a greenhouse gas reduction goal took effect, be situations that decrease of greenhouse gas was acutely required. Therefore, interest of utilization of the new & renewable energy is increasing everyday. In advanced research, we shows that at first divided a country to nine range by natural geography, and second executed Meteorological data analysis of recent 30 years considering level of significance by nine range. The results of advanced research are that the similarities are low because there are the regions that temperature deviation of the similar climate regions is large in winter season, and there are not characteristics of clear discrimination of temperature. This study shows that at first divided a country to six range by temperature range, and second executed Meteorological data analysis of recent 30 years considering level of significance by six range. The results of this study are that in heating load calculation of building, periodic temperature data management is required because facility capacity and cost are affected greatly by outdoor temperature, and temperature by climate range needs consideration of pertinent area. Ground temperature was assumed of the weather in region, the ground and soil. Lastly, we were able to know that establishment of climate region by temperature range can be useful policy making and plans of design of the horticultural facilities and architectures.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제20권2호
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• pp.37-45
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• 2014

Purpose: Numerous researches about healthcare buildings have been performed however, they were mainly focused on convenience or healing condition for medical treatments. The hospitals consume energy and generate $CO_2$ as twice as the residential or commercial buildings do(Lim, et al., 2010a:154). The public regional hospitals are especially in serious conditions. They are more than 20 years old in average. Energy efficiency and environmental friendliness in the public regional hospitals are far behind ones in private sectors. Even though the ministry of health & welfare is supporting renovation of the builidngs and enhancement of the facilities every year, it is not integrated including sustainibility. In this study, we investigates current conditions of the regional public hospital in envrionment-friendly standpoint, especially focused on Chungcheong Province area Hospitals. Methods: we investigates current conditions of the regional public hospital in envrionment-friendly standpoint, especially focused on Chungcheong Province area Hospitals. The study was executed by qualitative and quantitative evaluations with site inspection, drawing analysis and interviews. Results: Through this study, we found that the Chungnam regional public hospitals can be environmentally improved by management plans and programs. Implications: Based on this analysis, Korean Green Building Certification for healthcare facilities will be developed in near future.

• 한국정보통신학회논문지
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• 제23권8호
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• pp.910-916
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• 2019

본 논문은 주거공간영역 별로 사용 난방열량을 측정하고 사용량을 자동으로 측정 분석하여 계량 운영 할 수 있는 공평관리 자동난방운영시스템의 구현이다. 난방공간은 4영역으로 분할하여 하나의 계량기로 유량과 열량이 계측된다. 이 시스템은 열량검출, 온도조절기, 밸브제어기, PC컨버터와 모니터링으로 구성된다. 난방 공간영역은 실내온도에 따라 열량 계산에 필요한 환수 온도가 측정되고 영역별 열량이 산출된다. 실험결과, 측정기기로 계측한 값과 비교하여 측정열량 값의 오차 범위는 1% 내이다. 기존의 유량계를 이용한 난방 분할 방식과 비교하면 난방 에너지 사용 비용이 약 7% 저감된다. 이 공평시스템은 향후에는 BEMS와 공동으로 연계하는 연구가 필요하다.

• 한국기후변화학회지
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• 제7권3호
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• pp.217-229
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• 2016

Increased evidences reveal that the global climate change adversely affect on the environment. Smart grid system is one of the ways to reduce greenhouse gas emissions in the electricity generation sector. Since 2013, Korea Electric Power Corporation (KEPCO) has installed smart grid station in KEPCO office buildings. The goal of this paper is two folds. One is to quantify the reduction in greenhouse gas emissions through smart grid stations installed in KEPCO office buildings as a part of pilot project. Among components of smart grid stations, this research focused on the photovoltaic power system (PV) and energy storage system (ESS). The other is to estimate the reduction in greenhouse gas emissions when PV is applied on individual houses. Results show that greenhouse gas emissions reduce 5.8~11.3% of the emissions generated through the electricity usage after PV is applied in KEPCO office buildings. The greenhouse gas emissions reduction from ESS is not apparent. When PV of 200~500 W is installed in individual houses, annual greenhouse gas emission reduction in 2016 is expected to be approximately $2.2{\sim}5.4million\;tCO_2-eq$, equivalent to 6~15% of greenhouse gas emissions through the electricity usage in the house hold sector. The saving of annual electricity cost in the individual house through PV of 200 W and 500 W is expected to be 47~179 thous and KRW and 123~451 thousand KRW, respectively. Results analyzed in this study show the environmental effect of the smart grid station. In addition, the results can be further used as guidance in implementing similar projects.

• Nuclear Engineering and Technology
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• 제55권12호
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• pp.4617-4627
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• 2023

Public perception of benefit over risk is the de facto factor in planning, construction, operation, halting, or phase-out of a nuclear power plant in any country. Even if there are multiple pathways of perceiving risk/benefit among different stakeholders, the perception of nuclear and non-nuclear groups needs to be individually tracked to help understand sectoral influence. Related studies were basically performed between the STEM (Science, Technology, Engineering, and Mathematics) and non-STEM groups. However, there are no such studies between the nuclear and non-nuclear groups. This study investigated the risk-benefit perceptions between the nuclear group (N = 102) and the non-nuclear group (N = 467) using survey data to measure their stake and identify the underlying factors by validating the hypotheses, through descriptive analysis, and structural equation modeling (SEM). Results showed that risk perception is significantly high in the non-nuclear group (as the P-value is > 0.001 to <0.01) while the benefit perception is slightly low in the nuclear group (as the P-value is > 0.01 to <0.05). The non-nuclear group was significantly influenced by risk perception due to a lack of involvement in nuclear activities. Notably, the nuclear group is less interactive in disseminating nuclear energy benefits to the non-nuclear group. Surprisingly, misperceptions and lack of confidence about the benefits of nuclear energy also exist in the nuclear group. The study emphasizes debunking nuclear myths in the nuclear and non-nuclear groups through meaningful interactions and demands effective public awareness-building programs by competent authorities for the growth of the nuclear industry.

• 한국공간정보시스템학회 논문지
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• 제9권2호
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• pp.55-66
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• 2007

21세기에 이르러 육상에너지 자원의 고갈과 점차 심화되는 세계 에너지난에 따라 해양광물자원에 대한 관심도가 증대되고 있다. 또한 세계 연안국들은 배타적경제수역(EEZ) 체제로 돌입하면서 자국의 해양관할권 확대를 위한 경쟁도 더욱 치열해지고 있다. 특히 1996년 1월 UN 해양법 협약에서 EEZ 개념이 도입되면서 각국의 갈등은 더 심화되었고 연안국간 EEZ 경계를 획정해야 하는 문제를 초래하였다. 우리나라의 경우에도 주변국과 EEZ가 중첩되기 때문에 경계획정을 위하여 관계국과의 협상이 시급한 실정이다. 이러한 협상에 대비하여 EEZ 내의 자원분포, 해저지질, 기존의 협정, 해양법 등과 같은 자료의 확보가 필수적이다. 따라서 본 연구에서는 분산적으로 관리되고 있는 기존 자원조사 자료를 분석하고 자료의 유형별 적합한 데이터베이스 표준안을 확정하여 이를 기반으로 자료를 가공하고 정리함으로써 EEZ 해양자원 조사의 결과물들을 효율적으로 관리할 수 있도록 하였다. 또한 구축된 데이터베이스에 존재하는 위치정보와 속성정보들을 상호 연계성과 전문적인 표출방안 등을 고려하여 다양한 정보를 효율적으로 표출할 수 있는 EEZ 해양자원정보시스템 (MRIS)을 개발하였다. 본 시스템은 GIS(Geographic Information System)을 이용하여 표출된 공간데이터를 다양한 공간 분석과 공간검색 기능 등을 이용하여 분석함으로써 EEZ 지역별 경제성 비교 및 주요 정책 수립에 활용되도록 하였다. 아울러 본 시스템을 이용하여 향후 EEZ 지역별 해양자원의 지속적 관리와 제공이 가능하여 국가해양자원의 체계적 관리가 가능하다. 나아가 향후 주변국과 경계획정에 있어 유리한 협상 결과를 도출하기 위한 제반 정보 제공과 함께 다양한 의사결정지원이 가능할 것으로 사료된다.