• Journal of Korea Water Resources Association
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• v.43 no.7
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• pp.609-623
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• 2010

In this paper the feedback loop mechanisms that are inherent in the management of water supply systems were identified based on the system dynamics modeling methodology. As a result, a system dynamics (SD) computer simulation model that can be used to aid efficient management of water supply systems was developed. The developed SD model can be used to predict operating conditions of water supply systems including the effects of pipe maintenance on the entire system. The developed model is consisted of water supply, pipe maintenance and water supply business finance model. The operation and maintenance data from a study water supply system were used to verify the model and to predict the past and future operating conditions of the system. The policy leverage that greatly affects the operating condition was evaluated by the sensitivity analyses for the operational indices due to changes in the exogenous variables. It was found that while the pipe maintenance related exogenous variables had great effects on the leakage and conditions of pipes, they did not have great effects on the major operational indices such as revenue water ratio. It is considered that the social costs due to leaks and pipe breaks and the corresponding mechanism of propagation of the costs must be modeled to better evaluate the effects of pipe maintenance on the operational conditions of water supply systems.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.193-214
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• 2016

The aim of this study was to investigate and analyze the changes in inputs and outputs for information-poor in public libraries to eliminate the digital divide. The survey and analysis was utilized indicators for the information-poor shown in library statistics. And through the analysis of statistical indicators, it examined the changing patterns of the elements that each library are inputted to eliminating the digital divide. As a result, it revealed problems such as regression of facilities for the aged and disabled, continuous decrease in the number of special materials for disabled person, and reduction of service users and budget for information-poor. In order to solve this problem and to achieve the desired performance for eliminating the digital divide. it's required the budget increase and strong policies for information-poor.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.399-407
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• 2016

This study is about setting the weighed value of evaluation items for cultural tourism development project using AHP and it analyzed the cultural and ecological tourism infrastructure project in three cultural areas of Andong City. As a result of examining the reliability of evaluation items, it turned out to be 0.9, an appropriate level. In the analysis of weighed value, the items valued highly were in the order of validity of the plan, economic validity, validity of the policy. As for the detailed indices for the three that showed the highest weighed value, for validity of the plan, distinction of contents; for validity of the policy, compatibility of regional characteristics; for economic validity, sustainability were given high values. In the end, it could be concluded that as the cultural and ecological tourism infrastructure project in three cultural areas was delayed a lot more than previously planned, in order to flexibly respond to changing environment, it would be desirable to change parts of the previous plan before pushing ahead with it.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.37 no.5
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• pp.855-862
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• 2017

The Republic of Korea has achieved rapid growth in economic, cultural and social through the development policy over the past half-century. However, principle of the nodal system has made an overgrown city and underdeveloped regions. A range of policies have been introduced aimed at underdeveloped regions. But many problems were found in policies. Because government ministry and public services were many and various. In addition, development priority are not based on objective index, Distribution business for the local government have been carried out. A study of the Index selection of the existing regions, has been large-scale center analysis. Thus, the difficulty is often in selecting the priorities of small unit operations. It is difficult to reach a selection of business to region priorities. Accordingly I want to be used as material for the efficient development of rural areas through the selection of indicators for a small areas. Intend to use the decision support system for the efficient development of small underdeveloped areas through index selection for a small and underdeveloped regions.

• Journal of the Economic Geographical Society of Korea
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• v.25 no.3
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• pp.357-379
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• 2022

This study diagnoses the industrial varieties and innovation capacity of the Korean regional economy and discusses how the priority for autonomous regional development can be set. Since the late 1990s, regional development policies in Korea have been attempted from various angles to reduce the economic gap between the metropolitan area and non-metropolitan areas, but the establishment of a development strategy in consideration of regional industrial characteristics and innovation capabilities has been insufficient. With the advancement and diversification of technologies and industries, regions must seek strategic diversification to prepare for economic shocks, away from strategies that specialize in specific industries. In this study, industrial varieties in regional basis is characterized using unrelated and related varieties. Variety indices show different patterns between the metropolitan area and non-metropolitan areas and between manufacturing and service sectors, which raises the need to consider industrial characteristics in regional development. Lastly, using the variety index and the innovation capacity index as two dimensions, the regional economic status at the municipal level is categorized into four types, and proper regional development policy priorities are suggested for each type.

• Journal of Technology Innovation
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• v.30 no.3
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• pp.35-64
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• 2022

Currently, The budget expenditure for national R&D has been on the rise, and the quantitative performance in national R&D programs has been increasing accordingly. However, a growth of qualitative performance can not reach to an upward trend of quantitative performance. For a poor qualitative performance such as patent grades and technologies with low efficiency of technology transfer, the performance evaluation centered on "number of cases" is necessary to improve and start to introduce various "qualitative performance indicators". This paper focuses on "Triadic Patent Families" being measurable the overseas competitiveness of patent applied in major countries(the US, Europe and Japan). It analyzes the influencing factors to evaluate the quality of qualitative performance of R&D program. The result of this analysis shows a significant effect on the creating of triadic patent families within factors of R&D scale and project characteristics. This paper is significantly meaningful to expand insufficient triadic patent families to the target of interest rather than early study relatively, and to analyze the influencing factors of the creation of triadic patent families.

• Informatization Policy
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• v.18 no.2
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• pp.85-98
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• 2011

This paper attempts to develop an index of mobile telecommunications service quality through econometric analysis using data of the leading telco in each OECD country. CapEx of the operator was selected as a proxy variable to represent the quality of the service. To eliminate the part which is dependent on the population and size from CapEx, however, CapEx was regressed on population, area, 3G coverage, Herfindahl-Hirschman Index (HHI) of mobile market, EBITDA margin, and market share of the leading operator. Then, the part of CapEx, which was explained by size and population, was subtracted from CapEx, and the remaining part was regarded as the quality index of mobile telecommunications service. Comparisons among quality indexes of each country revealed that the service quality in Korea and Japan is better than that of France, UK and Germany.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.3
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• pp.133-142
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• 2009

Although the average amount of spam users receive a day is statistically decreasing in Korea, they still complain of spam and insist there is a gap between the amount of spam users receive in reality and the amount of spam the users feel due to spam. This study analyzes the cause of the gap and suggests the way of complementing the traditional measure of the amount of spam receipt. In addition, we provide the conceptual framework of 'spam management index' that explains the overall spam counteract performances from the users' point of view. Especially, we develop the method of measuring 'spam stress' which can be used as an qualitative output element. Finally we apply the model in Korea to develop spam counteract policies.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.364-364
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• 2020

세계적으로 지구온난화 등 기후변화의 영향으로 재해발생의 빈도와 피해 심도가 증가하고 있다. 일반적으로 자연재해에 의한 피해복구에 소요되는 비용은 재해 피해액보다 크다. 선진국의 경우 이러한 재해발생 가능성을 두고, 피해를 최소화시키기 위하여 복원력에 초점을 맞추어 관련 정책을 수립하고 있다. 그러나 가뭄의 경우 타 재해에 비하여 지속기간이 길고 그 지속기간에 따라 피해의 영향이 지역별로 편차를 두고 달라지게된다. 따라서, 정확한 역량평가 결과를 제시하기 위해서는 가뭄이 자주 발생하는 지역, 복구능력이 탁월한 지역 등을 구분하고 평가하여 지자체가 갖고 있는 가뭄에 대한 역량을 정량적으로 평가할 필요가 있다. 가뭄역량평가(복원력 평가)는 항목의 특성에 따라 크게 내구성, 대체성, 자원동원력, 그리고 신속성으로 구분된다. 본 연구에서는 각 항목별 가뭄 시 적용 가능한 정량적 복원력 지표 8개를 도출 하였으며 지자체별 해당 데이터를 확보하였다. 다음으로 주요 지자체별 복원력 항목 값을 정규화 하여 표준점수화 하였다. 제안된 방법론은 향후 개별 항목특성에 맞는 정량화 방법, 항목별 가중치 부여방법, 그리고 정성지표 고려 등과 같은 지속적인 추가연구가 진행되어야 하지만, 제안된 복원력 정량지표와 그 결과는 지역적인 가뭄에 대한 지자체별 역량강화전략을 제시하기 위한 기초자료로 활용이 가능하다.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.111-111
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• 2022

우리 사회가 수자원 관리 정책 결정에 사용 가능한 수문 이상 기상 정보를 제공하기 위해서는 초고해상도 지표면 수문 모델 개발이 필수적이다. 본 연구에서는 기존 저해상도 기후 모델들의 지표 수문학적인 과정들을 개선하기 위해 초고해상도 하도 추적 모델링 기술을 통해 역학적인 상세화가 시도되었다. 100-km 격자의 VIC 모델에서 재생산된 지표 배출량과 기저 배출량을 입력 데이터로 사용하여 다양한 공간 규모의 하도 추적 모델에서 사용하여 산정된 하천유량의 신뢰도를 평가하였다. 본 연구에서는 90미터 (3 arc second), 450 미터(15 arc second), 그리고 900 미터 (30 arc second) 격자 규모의 금강 유역 하천망 지도를 사용하여 과거 장기 하천 유량 데이터(1948년-2016년)를 재생산하였다. 본 연구에서는 금강 유역 내의 지점 관측 하천 유량 데이터와 재생산된 유량 데이터의 불확실성을 평가하였다. 본 연구의 주요 결과는 보다 고해상도의 하천망 지도를 하도 추적 모델에 사용 시 산정된 하천 유량 데이터의 불확실성이 감소하는 경향을 발견하였다. 끝으로, 초고해상도 지표 수문-하도 추적 모델을 통한 상세화 기술의 한계점과 개선 방안을 논의하였다. 본 연구는 기후변화로 인한 이상 기상 또는 기후의 위험성 증가에 효율적으로 선제 대응할 수 있는 핵심 수문 기후 모델링 기술을 개발에 중요한 기여할 것이다.