• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.14 no.6
• /
• pp.19-23
• /
• 2014

Universities in Korea are exerting every effort to make great strides through restructuring at the moment. Reconstruction accompanied by readjusting the quota and merging of academic departments inevitably require rearrangement of resources and assets of those universities. This paper presents a management method with respect to the spaces held by a university based on the public concept of space through which a system has been implemented as an example. Such attempt makes it possible for the university to adequately cope with changes in its business environment through its effective management with regards to the available spaces on campus. Spaces are all the members' shared public assets. If there is a demand for a space, the university should be able to meet the demand. If the use of a space expires, the university should be able to retrieve and reallocate it. The space classification system presented in this paper may play a huge role in fixating space chargeback system.

• Journal of Advanced Marine Engineering and Technology
• /
• v.38 no.3
• /
• pp.233-239
• /
• 2014

The accurate engine output is basically one of important factors for the analysis of engine performance. Nowadays in-cylinder pressure analyzer in internal combustion engine is also an indispensable tool for engine research and development, environment regulation and maintenance of engine. The combustion analysis is desperately needed in order to induce a correct judgment on the condition of the engine and suggest the specific ways to improvement as well as the correct engine output. And these tool is advantageous to reduce fuel consumption and maintenance of the engine. In this study, using the developed measuring kit, combustion analysis of marine generator engine which was adapted as test engine was carried out. It was verified that the good operation condition of the engine as well as contributing to fuel savings by checking and readjusting accurately the irregular combustion of the test engine were accomplished. From the results all above, it was recognized that the measuring kit by new method for engine output was developed and verified for its utilities.

• The Korean Journal of Financial Management
• /
• v.26 no.3
• /
• pp.227-246
• /
• 2009

This study examines the dynamic hedging performances of the Black-Scholes model and Heston model when stock prices drift with stochastic volatilities. Using Monte Carlo simulations, stock prices consistent with Heston's(1993) stochastic volatility option pricing model are generated. In this circumstance, option traders are assumed to use the Black- Scholes model and Heston model to implement dynamic hedging strategies for the options written. The results of simulation indicate that the hedging performance of a mis-specified Black-Scholes model is almost as good as that of a fully specified Heston model. The implication of these results is that the efficacy of the dynamic hedging performances on evaluating the specifications of alternative option models can be limited.

• Proceedings of the Technology Innovation Conference
• /
• 2005.02a
• /
• pp.57-84
• /
• 2005

기관평가제도는 경영관리과정의 최종단계로 평가결과에 의한 인센티브 부여와 피드백과정을 갖는 경영관리의 중심분야 임에도 불구하고 아직까지 정부출연연구기관의 기관평가제도에 대한 유효성 평가에 대한 실증연구가 없는 실정이다. 본 연구에서의 기관평가제도의 유효성에 대한 평가는 기관평가지표가 기관성과를 평가하기에 적절하게 구성되었는지의 여부와 연구기관의 의견이 반영되었는지 여부로 검증하였다. 본 연구의 목적을 달성하기 위하여 다음과 같은 세부적인 방법론을 사용하였다. 첫째, 연구기관의 특성분석과 선행연구를 통하여 연구기관의 BSC 모형을 도출하였다. 둘째, 출연 연구기관의 특성을 고려하여 관점을 도출한 후 전문가를 통한 델파이법(Delphi Method)으로 관점을 확정하였다. 셋째, 기존 평가제도에서 평가지표의 가중치(weight)를 분석하여 관점별로 분류한 후 BSC 형태로 재조정하여 기존 평가제도의 유효성을 분석하였다. 넷째, 피평가자의 설문조사를 통하여 피평가기관의 의견이 반영된 평가지표의 유효성을 분석하였다. 기존 평가제도의 평가지표와 연구기관의 의견이 반영된 평가지표가 BSC 모형에서 적절하게 구성되었는지 분석하기 위하여 연구기관의 BSC 관점간의 가중치가 기존 평가제도와 연구기관의 의견이 반영된 평가지표에 반영되었는지 검증하였다. 연구결과 기초 ${\cdot}$ 원천 연구에 주력하는 기초기술연구회, 산업화 ${\cdot}$ 상업화 연구에 주력하는 산업기술연구회, 공공성 ${\cdot}$ 대형연구에 주력하는 공공기술연구회간에는 미션과 특성이 다르기 때문에 검증결과 관점간의 가중치가 다르게 나타났다. 따라서, 현행 기관평가제도는 연구기관의 특성과 미션을 고려한 유효한 평가제도로 볼 수 있겠다. 연구기관의 의견이 반영되었는지 여부는 기존 평가제도와 연구기관의 의견이 반영된 평가제도를 대상으로 관점간 가중치의 우선순위로 검증하였다. 연구결과 관점간 가중치의 우선순위가 동일할 경우 현행 평가제도는 연구기관의 의견이 반영되었다고 볼 수 있으나, 검증결과 관점간 가중치가 다르게 나타났다. 또한, 추가적인 분석에서 연구회별 관점의 가중치와 소속 연구기관별 관점의 가중치를 분석한 결과 일부 연구기관에서는 연구회의 가중치와달리 나타났다. 따라서, 현행 기관평가제도는 일부 연구기관의 특성이 충분히 반영되지 않아서 유효한 평가제도로 볼 수 없다고 하겠다. 본 연구의 결과에 따라 출연연구기관의 기관평가지표에 대한 각 지표별 가중치와 지표 문항 개선시 유용한 자료로 활용되리라 본다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2020.06a
• /
• pp.155-155
• /
• 2020

최근 전 세계적으로 기후변화 및 이상기후로 인해 홍수, 가뭄과 같은 수자원과 관련된 재해들의 빈도가 증가하고 있는 추세이다. 가뭄은 발생 시작 및 종료 시기가 명확하지 않고, 그 피해가 광범위한 특징으로 인해 농업분야에 직접적인 피해를 주고 있으며, 농산물 생산성 및 안정적인 농업용수 확보에 큰 영향을 미치고 있다. 과거 가뭄을 해석하기 위해서는 일반적으로 강수량, 가뭄지수 등 단일지표를 활용하여 가뭄을 평가하였으나, 최근 선제적인 가뭄대응을 위해 다양한 인자들을 종합하여 판단하는 취약성 평가 (Vulnerability Assessment) 개념을 도입하였다. 농업가뭄 취약성은 IPCC (Intergovernmental Panel on Climate Change)에서 기상 및 수문학적 가뭄에 의한 작물 생산 피해 및 가축의 피해를 동반할 수 있는 가능성으로 정의한다. 본 연구에서는 농업용 저수지 중심의 농업용수 기반 취약성 평가 항목을 선정하여 농업가뭄 취약지도를 작성하였다. 민감도, 노출도 및 적응능력 개념에 적합한 대응변수를 활용하여 저수지의 저수율, 용수 부족 및 가뭄 대응능력 뿐만 아니라 사회·환경적, 기상학적 영향을 고려한 평가 항목 선정하였다. 항목별 단위 및 특성을 통합하기 위해 스케일 재조정 (Re-Scaling), Z-Score 등 다양한 방법을 활용하여 표준화를 실시하였으며, AHP (Analytic Hierarchy Process), 엔트로피 분석 등을 통해 항목별 가중치를 산정하였다. 또한 농업가뭄에 긍정적인 영향과 부정적인 영향을 미치는 항목을 구분하여 대응변수를 적용하였다. 이를 바탕으로 농업가뭄 취약성을 평가하여 항목별 등급을 구분하였으며, 전국 167개 시군을 대상으로 농업가뭄 취약지도를 작성하였다. 본 연구의 결과는 시군별 맞춤형 농업가뭄 대응정책의 기초자료 활용 가능하며, 농업가뭄 취약지역/상습가뭄지역에 대한 정보 제공이 가능할 것으로 판단된다.

• The Journal of the Korea Contents Association
• /
• v.6 no.12
• /
• pp.235-243
• /
• 2006

In this study, in order to grope for local governments' roles for effective countermeasures for disasters, the researcher did comparative research on such roles of local governments of the USA and japan. In case of the USA and japan, their local governments take the 1st responsibility for quick countermeasures for disasters and cope with disasters in cooperation with central government and NGO, etc. In conclusion, in order to make Korea's system to cope with disasters more effective, first it is necessary to readjust roles of central government and local governments. In other words, in case of the USA and japan, law provides that initial responsibility for coping with disasters lies in local governments. Accordingly, when disaster happens, initial countermeasures are quickly made by local governments. It is also possible for local governments to secure organizations, tools and manpower in their own ways. Therefore, in case of Korea, it is also urgently required to divide roles for disaster management between central government and local governments. Second, it is necessary to establish local disaster management system per type that is proper for regional characteristics and situations. Third, it is necessary to form organic networks between civic groups, local private enterprises, and central government. Fourth, informatization of local disaster management system must be prepared quickly. Finally, in order to do local governments' activities to cope with sites smoothly, specialization of manpower is required. Accordingly, it is necessary to train professional manpower of local governments for disaster management and to develop programs to improve specialty.

• Journal of Korea Water Resources Association
• /
• v.50 no.12
• /
• pp.815-825
• /
• 2017

Groundwater management vulnerability was assessed using TOPSIS (Techniques for Order Performance by Similarity to Ideal Solution) for 21 administrative districts in Nakdong river basin. Ten indicators were selected for 21 administrative districts in the Nakdong river basin by collecting natural, human, and social data sets. The selected indicators were standardized using rescale method, and each indicator was weighted by considering the questionnaire of expert group. The results of the weights determination survey showed that the annual average groundwater level index was 0.157 and this is the highest value. The annual average precipitation index was 0.154 and the annual groundwater recharge index was 0.152. The lowest weighted index was 0.043 for population density. Finally, the result of assessment of groundwater management vulnerability showed that Sangju-si was the most vulnerable to groundwater management among 21 administrative districts in Nakdong river basin because the annual average precipitation, annual average groundwater recharge, and annual average groundwater use indicators were highly vulnerable. The second and the third vulnerable regions were Yecheon-gun and Haman-gun respectively. The assessment of groundwater management vulnerability for the five major river basins in Korea can be a essential basis for the establishment of groundwater management policy.

• Spatial Information Research
• /
• v.8 no.1
• /
• pp.51-67
• /
• 2000

This was preliminary research to develop the mapping method for the Urban Ecological Map. This research provided preliminary evaluation model for ecological conservation. The model was applied to Mt. Kwanak in Seoul, and the Urban Ecological Map was produced and tested. The results are as follows. First, some problems were found in the legal Ecological Map ; insufficient and only qualitative criteria for evaluation of the conservation value in an urban area, and exclusion of the areas designated by other was laws. Secondly, in order to improve the evaluation criteria for Ecological Map, some missed sites should be added to the legal list of valuable sites. Those are needed for ecological restoration, conservation of wildlife habitats managed by a city government , and establishment of eco-corridor. Third, the efficient mapping process for Urban Ecological Map must have two steps. On the first step an ecological evaluation should be done based on pure conservation value. On the second one the Ecological Map for legal action control should be made. And the Analytic Hierachy Process is considered as a Helpful technique for improving the objectivity of evaluation model. Fourth, the legal action control system for Urban Ecological Map should be reviewed.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.43 no.1
• /
• pp.96-107
• /
• 2015

Brownfield sites are beginning to be considered as potentially useful areas for landscape design and planning, with post-industrial areas such as water treatment facilities and military training bases being converted into useful landscapes such as parks and recreation areas. These redevelopments bring broad benefits through revitalizing communities and increasing property values, thus, increasing the demand for comprehensive management and planning policies. This study examines changes in U.S. brownfield policies and programs and, identifies their periodic characteristics over the thirty years since the Superfund program was introduced in 1980. A descriptive and interpretive approach was utilized, focusing specifically on a time sequential analysis of the data gathered from the overview of the Environmental Protection Agency's web-based documents and related literature. The primary changes in and characteristics of programs and policies were analyzed and divided into three periods : environmental protection, remediation and reuse, and comprehensive planning. Four major features were identified: relaxation and readjustment of regulation, diversification of support programs, a mix of top-down and bottom-up approaches, and database system building. The study examines how common brownfield problems such as site identification difficulties and assessment and remediation cost have been dealt with in the regulatory context and has implications for future policies and programs for effective brownfield planning and management in Korea.

• Journal of Advanced Navigation Technology
• /
• v.20 no.3
• /
• pp.203-209
• /
• 2016

Among the various fields in the communications, navigation, and surveillance/air traffic management (CNS/ATM) scheme, the surveillance field, which includes an automatic dependent surveillance - broadcast (ADS-B) system and a multilateration (MLAT) system, is implemented using satellite and digital communications technology. These systems provide better performance than radar, but still incur position error. To reduce the error, we propose an efficient information fusion method called the reweighted convex combination method for ADS-B and MLAT systems. The reweighted convex combination method improves aircraft tracking performance compared to the original convex combination method by readjusting the weights given to these systems. In this paper, we prove that the reweighted convex combination method always provides better performance than the original convex combination method. Performance from the fusion of ADS-B and MLAT improves an average of 51.51% when compared to the original data.