• Journal of the Korea Convergence Society
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• v.8 no.2
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• pp.163-168
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• 2017

The feasibility evaluation of public projects has been carried out mainly in the economic analysis. However, items of political, technological and balanced regional development aspects are further evaluated by applying analytic hierarchy process, This paper suggests to analyzes preliminary feasibility study of construction and research & development project during the past three years and to verify correlation between B/C ratio and AHP weight. The result shows that the correlation between cost benefit ratio and the weight of the hierarchy is 0.744 in construction projects and 0.899 in research & development project. Namely, AHP weight be under the control of B/C ratio and is devoted to its role against expectation. Therefore it must be sufficiently discussed in various designs of studies to maximize the effects of AHP analysis.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.927-932
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• 2010

본 연구는 치수효과가 높은 하천제방의 안전도 향상을 위한 관리 고도화 기술 개발을 위하여 수위, 유량이 제방의 안전에 미치는 영향을 규명하고 센서 기술 적용하여 실시간 제방 안전관리 모니터링 기술을 확보하는데 있다. 이를 위해, 국내외 기술동향 및 사례분석하고, 변위발생 및 안전성 모니터링을 위한 센서 기술 적용 방안, 센서 적용시 문제점 및 개선방안, 분석방법 등에 대해 정리하였으며, 대형 토조를 이용하여 집중강우 등에 의한 수위 및 유속의 증가에 따른 하천제방에 미치는 영향을 실험적으로 규명하고, 이를 센서 기술을 적용하여 실시간 모니터링을 통한 안전성 평가 방법을 제시하고자 하였다. 하천제방은 종방향으로 긴 구조적 특성을 갖고 있으며 이러한 특성상 모든 구간에 정밀한 계측 장비를 설치하여 운영 관리함에 있어 경제적, 효율적인 측면에 있어 문제가 있는 것으로 사료된다. 따라서 주요 하천시설물 중 구조물이 하천제방을 횡단할 경우 주요 구조물에는 집중형 센서인 FBG 타입을 도입하고, 제방 연통실험 등을 통해 조사 분석된 취약 구간에 대해서는 분포형 센서인 BOTDR 타입의 광섬유 센서를 적용하여 종합적인 관리가 가능하도록 시스템 구성이 필요한 것으로 판단된다.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.16 no.6
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• pp.119-130
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• 2021

This study is a study on the regulatory focus and entrepreneurship that affect entrepreneurial motivation under uncertainty. In the empirical analysis results between the prevention focus, risk taking, and economic entrepreneurial motive, which were not observed in previous studies in Korea, this study tried to supplementally verify the previous studies by focusing on the limitations of the sample suggested as limitations. In particular, under a special external environment where uncertainty is deepening due to COVID-19 and the economic situation is being severely hit, we regressively analyze regulatory focus and risk taking, which are innate personal characteristics that can affect entrepreneurial motives. The mediating effect of risk taking was demonstrated. As a result of the empirical results, it was found that the prevention focus, risk taking, and economic entrepreneurial motivation had a significant effect, and it was shown that risk taking had a mediating effect between the prevention focus and the economic entrepreneurial motivation. This result is meaningful as a result not observed in previous studies, and it is judged that the control focus, which is an individual characteristic with a large innate tendency, interacts with the risk taking of the acquired tendency to influence the motivation to start a business. The results of this study can be of practical help by understanding and concentrating on regulatory focus and risk taking when conducting entrepreneurship or entrepreneurship education programs to entrepreneurs who dream of or want to start a business amid the growing uncertainty of the external environment. On the other hand, it is necessary to confirm whether these results, which are different from previous studies, are the effect of sample diversity or the external environment such as Corona 19, and re-verification through additional research is needed in the future.

• Journal of Korea Technology Innovation Society
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• v.12 no.1
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• pp.70-87
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• 2009

This paper studies the efficiency of public sector confronting with increasing oil price, economy crisis and energy-environment problems. In consideration that efficiency of national R&D program has been subjectively evaluated, this paper focuses objective validity by relative efficiency through a comparison among R&D programs in Korea. To implement this study, data published in national reports on R&D programs is used and analyzing method is induced by related books and theories. At the result of Data Envelopment Analysis on the collected data, this paper suggests the way to enhance the efficiency of nuclear R&D program. This study is the first on efficiency of national R&D programs applied DEA methods and is expected to contribute exploring the more efficient way of program management if more sophisticated DEA could be developed and applied.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.584-594
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• 2016

This research empirically analyzes, from an ecological perspective, whether socio-economic factors of the regions in which the elderly live have any actual influence on thoughts of suicide on the part of the elderly. Microscopic data either included outliers in part of the variables, including income and other variables of that type, from among source data from investigations into actual conditions of the elderly in 2014. Regarding macroscopic data, the indices that represent social and economic situations in each region, which were provided by KOSIS, were selected. Regarding the method of analysis, hierarchical or multi-level analysis models were applied by considering special hierarchical characteristics and heterogeneity at the personal and regional levels. The analyses showed that the following had statistically significant influences: 1. the cost-of-living index and the national basic supply and demand rate of the region; 2. the extent of natural disaster damage; and 3. the number of leisure and welfare facilities for the elderly, compared to the elderly population. Based on the results, proposals are made for systematic and practical endeavors in the community.

• Electronics and Telecommunications Trends
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• v.11 no.4 s.42
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• pp.1-11
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• 1996

최근 기존 전화서비스를 무선으로 제공하여, 경제성뿐만 아니라 고속의 데이터 및 팩스서비스에 의한 서비스의 차별화를 이루려는 연구개발이 행해지고 있다. 이같은 가입자선로의 무선화를 위한 시스템을 WLL(Wireless Local Loop)이라 한다. 본 고에서는 먼저 WLL시스템의 구성 및 원리를 살펴보고, 현재 사용중이거나 개발예정인 WLL시스템의 방식 및 특성을 비교분석하였으며, 시스템 계획(planning)에 근거하여 용량, 서비스영역, 음질 등의 관점에서 기존 셀룰러시스템에 대비한 분석결과를 논의하였다. 또한 향후 진화방향 및 표준화동향 등을 검토하였으며 끝으로 결론을 언급하였다.

• Korean Chemical Engineering Research
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• v.55 no.5
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• pp.609-617
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• 2017

Lignocellulosic biomass is a renewable resource for production of biofuels and biochemicals. Furfural (FF) is an important platform chemical catalytically derived from the hemicellulose fraction of biomass. Tetrahydrofurfuryl alcohol (THFA) is a FF derivative and can be used as an eco-friendly solvent with thermal and chemical stability. Despite large numbers of experimental studies for catalytic conversion of FF to THFA, few research have conducted on the economic feasibility for large-scale THFA production from FF. At the stage of assessment of the potential for commercialization of conversion technology, a large-scale process study is required to identify technological bottleneck and to obtain information for solving scale-up problems. In this study, process simulation and technoeconomic evaluation for catalytic conversion of FF to THFA are performed, as the following three steps: integrated process design, heat integration, and economic evaluation. First, a large-scale process including conversion and separation processes is designed based on experimental results. When the FF processing rate is 255 tonnes per day, the FF-to-THFA yields are 63.2~67.9 mol%. After heat integration, the heating requirements are reduced by 14.4~16.4%. Finally, we analyze the cost drivers and calculate minimum selling price of THFA by economic evaluation. The minimum selling price of THFA for the developed process are $2,120~2,340 per tonne, which are close to the current THFA market price.

• 한국정보통신설비학회:학술대회논문집
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• 2002.08a
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• pp.105-109
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• 2002

초고속 인터넷 서비스가 널리 보급된 상황에서 서비스 품질과 콘텐츠의 사용 대역 증가 현상이 날로 가속화되고 있다. 이에 따라 전송속도가 거리에 제한받지 않는 광통신 기술이 품질과 대역 조건을 만족시키는 가입자 액세스망 기술로 각광 받고 있다. 현재는 점대점(point-to-Point) 광통신 기술을 이용한 광 대역서비스가 제공되고 있으나, 밀집 지역과 분산 지역 그리고 음영 지역의 각 가입자 단까지 고가의 광선로를 포설해야 하는 경제적 부담을 주고 있다. PON(Passive Optical Network) 기술은 점대점 광통신 기술에서 제기되는 경제적 비효율성을 극복하고, 더 나아가 FTTC, FTTB에서 FTTH로의 진화를 용이하게 하는 점대다점(point-to-multipoint) 광통신 기술이다. PON 기술은 ATM 기반의 B-PON(Broadband-PON) 방식과, Ethernet 기반의 E-PON(Ethernet-PON) 방식이 현재 상용화 단계에 있으며, 이 방식들은 상하향 데이터 전송을 위해 단일 파장을 사용하고 있다. 본 논문에서는 PON 기술동향 및 발전전망에 대해 알아보고, B-PON 및 E-PON 기술 분석한 뒤, 국내 환경에 가장 적합한 서비스 제공 방안을 제안하고자 한다.

• Journal of Technology Innovation
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• v.29 no.4
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• pp.31-57
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• 2021

This study explores the effect of open innovation activities on innovation performance by dividing into two dimensions of breadth and depth of open innovation activity, and it also verifies the mediating effect of technical protection between open innovation activities and innovation performance. In order to examine the hypothesis, it has surveyed 1,403 companies of manufacturing and service with experience in producing innovative results. The results find that the breadth of open innovation activities has a positive effect on the achievement of radical innovation, and the depth of open innovation activities brings a positive effect on the achievement of incremental innovation. The verification result of the mediating effect of technology protection indicates that partially mediated between the breadth of innovation activities and radical innovation activities, and in the case of the depth, it is completely mediated. The results of this study provide the crucial implications not only for the company promoting open innovation, but especially also for the companies promoting product innovation by acquiring technology.

• International Area Studies Review
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• v.15 no.3
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• pp.559-580
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• 2011

It's hardly possible to end the controversy over the effectiveness of government's role in economic growth of developing countries. It seems that each side can provide enough empirical evidences to support each side's argument. In most developing countries, the governments' capability to implement the economic plan is a more important factor that the type of policy they choose. Therefore, in this study, we focus on the capacity of policy implementation rather than the choice of policy itself. We tried to critically investigate Ecuador's policy implementation capacity in terms of qualities of policy framework, policy measures and policy constraints. First, Ecuador places high priority on import substitution and export promotion, she is not equipped with sufficient policy measures. Second, the overall policy framework is not effective enough to mobilize resource support those policies. Third, while the SENPLADES is leading overall develoment plan, it lacks the capacity to coordinate various ministries involved.