• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.6
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• pp.138-147
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• 2018

With the recent series of damage caused by earthquakes in Korea, such as Gyeongju and Pohang, we know that Korea is no longer a safe zone for earthquakes and that we need to be prepared for them. In addition, bridges built prior to the introduction of seismic design concepts remain without adequate seismic reinforcement measures, and earthquake reinforcement should be performed efficiently considering economic and structural safety. Preliminary assessment of seismic performance of existing bridges is divided into four seismic groups, taking into account seismicity, vulnerability and Impact, considering the magnitude of the existing bridge's seismic, and prioritization for further evaluation of seismic performance. In this study, unlike the existing anti-seismic reinforcement priority method, scores are calculated based on the seismic design criteria applied to bridges, importance coefficient of the bridge including the zone coefficient and the Importance, vulnerability index of the bridge including the soil condition and the elapsed years, detail coefficient of the bridge including the superstructure form, the span length, the width, the height, the design load, and the daily traffic volume. The calculated score items will be weighted and grouped according to the results. Using this, a simpler and more efficient algorithm was proposed to determine the priority of seismic reinforcement on a bridge.

• Journal of Korean Society of Transportation
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• v.23 no.1
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• pp.55-66
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• 2005

Association of South East Asian Nations(ASEAN) has recently decided to develop ASEAN Highway Network to connect member countries by road in an attempt to achieve a goal of closer economic integration in the region. This entailed the necessity to newly construct or upgrade some 5,481 km of road sections to make ASEAN Highway Network functional. This study offers haw we can prioritize development of these road sections using the Analytic Hierarchy Process. Particularly, it shows how individual road sections can be prioritized considering the importance of corridor or road group where the individual road section lies. It also develops how values of different evaluation criteria can be compared in the same scale. This new approach can be useful in prioritizing highway development in such cases where candidate road sections are widely scattered around the region, so detailed benefit and cost analysis is practically too demanding to carry out.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.11
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• pp.12-19
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• 2015

In network-centric warfare, the communication network has played a significant role in defeating an enemy. Especially, the urgent and important data should be preferentially delivered in time. Thus, we proposed a priority MAC protocol based on CSMA/CA with Binary Exponential Back-off for tactical wireless networks. This MAC protocol suggested a PCW(Prioritized Contention Window) with differentiated back-off time by priority and a RBR(Repetitive Back-off Reset) to reset the remaining back-off time. The results showed that this proposed MAC has higher performance than those of DCF(Distributed Coordination Function) in the transmission success rate and the number of control packet transmission by reducing the packet collision. Thus, it produced more effective power consumption. In comparison with DCF, this proposed protocol is more suitable in high-traffic network.

• Journal of Digital Convergence
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• v.20 no.1
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• pp.47-54
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• 2022

The purpose of this study was to derive policy priorities for fostering the biopharmaceutical industry. In this study, the urgency and importance of the policy to foster the biopharmaceutical industry in Gyeonggi-do was investigated, and the priorities of the policy in the biopharmaceutical industry were analyzed through IPA analysis. As a result of the study, the top priority support tasks for the biopharmaceutical industry promotion policy were 'R&D support', 'Expert training', and 'commercialization support'. As a result of deriving policy priorities for each biopharmaceutical sector, 'R&D support' and 'Expert training' were found to be high in common, and differences in policy priorities for each industry such as cell therapy products and advanced bio-convergence products were confirmed. Also, as for the policy demand, R&D funding support, clinical trial support, and commercialization funding support were found to be high. Based on these results, the government's policy to foster the biopharmaceutical industry was supported with a focus on 'R&D support' and 'Expert training', and policy implications were drawn that customized support is needed in consideration of the characteristics of each industry field.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.266-266
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• 2021

산업의 발달로 지표면의 포장면적이 증가하여 지표의 유출량은 증가하고, 지하수계로의 함양량은 감소하고 있다. 또한, 기후변화로 강우의 패턴이 변화하여 강우 강도가 증가하고 있으며, 무강우일수 또한 증가하여 지표면으로 유출되는 수자원의 양은 증가하고 있다. 대수층으로의 함양량은 줄어들어 지하수자원의 양은 점차 감소하고 있다. 지속가능한 지하수자원의 활용을 위해서는 지하수자원 관리 방안을 적용하고, 지하수자원 관리 계획을 수립해야 한다. 효과적인 관리방안의 적용을 위해서는 상대적으로 지하수자원이 중요한 지역을 대상으로 지속 가능한 지하수자원의 활용을 도모해야 한다. 지하수 이용량이 많고 지하수자원에 대한 의존율이 상대적으로 높은 지역을 우선적으로 진행해야 한다. 본 연구에서는 우리나라의 4대강 유역을 대상으로 지하수자원의 중요도에 대한 평가를 진행하였다. 지하수자원 이용 중요지역 선정을 위해서는 지하수 이용량과 관련된 자료를 분석하여 선정하였다. 총 5개의 지표가 선정되었으며 지하수 이용량, 수자원 이용량 중 지하수 이용량 비율, 지하수 이용 관정 개수, 지하수 이용 관정 당 취수량, 면적대비 지하수 취수량을 통해 평가를 진행하였다. 추후 유역을 좁혀 지하수 이용에 대해서 정밀 평가를 진행해야 할 필요가 있으며, 지형 특성 인자, 기후 특성 인자 등을 추가하여 평가한다면 지속가능한 지하수자원의 이용을 위한 관리 계획 수립의 기초 자료로 활용할 수 있을 것이다.

• 한국벤처창업학회:학술대회논문집
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• 2023.04a
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• pp.149-156
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• 2023

임팩트 투자(impact investment)는 사회적 가치와 재무적 이익을 동시에 추구하는 소셜벤처에 투자하는 행위이다. 그동안 국내에서는 정부 주도로 임팩트 투자 생태계가 조성되고 성장하였다. 선순환 투자 생태계를 위해서는 소셜벤처가 가지는 사회혁신의 가치와 임팩트 투자의 연계가 중요하다. 사회적 형평과 시장의 효율의 두 가치 중심으로 수요와 공급이 맞는 임팩트 투자에 대한 이해가 필수적이다. 특히, 임팩트 투자 지원정책과 투자가 공공에서 민간으로 확대되는 시점에서 임팩트 투자의사 결정요인을 규명하는 차별화된 접근이 필요하다. 이에 본 연구는 임팩트 투자의사 결정요인을 분석하고 우선순위를 도출하고자 하였다. 먼저 문헌분석을 통해 투자 결정에 영향을 미치는 요인을 확인하고 임팩트 투자 심사역을 대상으로 자문·설문조사를 수행한 뒤, 델파이 기법을 적용하여 주요 투자의사 결정요인을 도출하였다. 다음으로는 임팩트 투자 심사역 10명을 대상으로 AHP분석을 실시하여 투자의사 결정요인의 우선순위를 분석하였다. 분석 결과, 상위요인의 중요도는 시장-창업가(팀)-제품·서비스-재무의 순서로 확인되었으며, 세부요인의 중요도는 '시장의 경쟁강도 및 진입장벽-시장성장 및 확장 가능성-팀의 전문성 및 역량-신시장 창출 가능성-영업활동 및 고객관리-창업가의 신뢰성 및 진정성의 순서로 나타났다. 이러한 연구 결과는 임팩트 투자에 대한 지원정책과 투자가 공공에서 민간으로 확대되는 시점에서 고유한 투자의사 결정요인을 규명하여 투자를 희망하는 이해관계자들에게 기초 자료를 제시했다는 데 의의가 있다.

• Journal of The Korean Association of Information Education
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• v.20 no.6
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• pp.597-606
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• 2016

By utilizing the TPCK model, this research analyzed the present state of pre-service elementary teachers' competencies related to the use of technology. It also conducted the Importance-Performance Analysis to prioritize remedial issues to improve curriculum related to the use of technology. A survey was conducted to 165 pre-service teachers who are senior students at a University. A questionnaire was used to investigate pre-service teachers' perception on the importance and performance related to Technology Knowledge, Technological Pedagogical Knowledge, Technological Content Knowledge and Technological Pedagogical Content Knowledge. As the result of the t-test, significant differences between importance scores and performance scores were found in all the competencies and 17 sub-competencies. In addition, as the results of the importance-performance analysis, 5 sub-competencies were found to be concentrated for the improvement, and 4 sub-competencies were found to be kept up because of their good work. Also 5 sub-competencies were turned out to have low priority, and 3 sub-competencies were turned out to be possible overkill.

• Journal of the Korea Convergence Society
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• v.11 no.6
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• pp.367-374
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• 2020

This study was conducted to provide basic data for prioritization of family support services by examining the importance and performance of family support for parents of children with special education. To achieve the purpose of the study, a questionnaire survey was conducted with 220 parents of children from special education nationwide. As a result of the study, the importance of all 29 family support service items was rated high, but the performance level was low, and statistically significant differences were found. In addition, as a result of analysis of importance and performance, family support services related to physical and physical well-being and disability-related support were evaluated as high-priority, low-practice services, and it was a task that should be presented as a priority in family support services. On the other hand, it was found that family support services in the areas of family interaction support or emotional well-being were considered to be services that should be avoided due to their low importance but high performance. Based on the results of these studies, the direction for the operation of family support services for children with special education needs to be suggested in the future.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.527-538
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• 2020

This research measures the urgency and importance listening to experts' opinions as a proposal for vitalization of folk modern dance groups. Firstly, the open type FGI(Focus Group Interview) was implemented for five groups of an expert by applying the new industry foster theory, and total 24 types of second questionnaire were developed through importantly referred or repeated contents. They were distributed to 20 people including a dance group representative, a planner, a university professor and etc to measure experts' importance and urgency. In the research result, For big list, Financial aid for both importance and urgency appear first, and for comparative analysis of importance and urgency for small list, differences in infrastructure construction are shown. "expansion of dance program's advertisement channels" and "rank 1" appeared in "Secure space for dancers". Suggestions for analyzing such results are as follows. It is shown that "detailed financial aid for the operation of dance groups" and etc in the aspect of financial aid, "the employment of professional human resources including design and producing etc" in that of performance and education related production development, "training a dancer who can assimilate a complex genre" in that of manpower training, "arrangement of exclusive space for a dance group" in that of infrastructure building, and "the employment of professional human resources including design and producing etc" in that of consulting support are important and urgent matters considered by experts.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.17 no.4
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• pp.101-114
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• 2022

Recently, various studies on the entrepreneurial ecosystem have been conducted. The entrepreneurial ecosystem is composed of various elements such as entrepreneurs, governments, and infrastructure, and these factors interact to contribute to economic development. The purpose of this study was to analyze differences in importance and performance of the entrepreneurial ecosystem for startups using the importance-performance analysis (IPA) method. Based on this, the importance and current level of the components of the entrepreneurial ecosystem were identified and policy implications were presented. The results of the study are as follows. The importance ranking was in the order of startup support program(4.43), startup funding (4.39), market accessibility(4.30). The ranking of performance was startup support program(3.81), ease of starting a business(3.76), support for startup support institutions(3.66), and startup funding(3.66). All elements of the entrepreneurial ecosystem showed higher importance than performance. This means that the components of the entrepreneurial ecosystem in Korea are recognized as important, but do not play a significant role in terms of performance for startups. In addition, the factors with the highest improvement in the importance-performance matrix were 「safety nets for startup failure」, 「culture of acceptance of failure」, 「ease of market entry」, 「ease of startup survival」, and 「ease of exit」. This study suggested improvement measures such as establishing a social safety net, improving awareness of startup failure culture, matching successful startups, strengthening scale-up support by growth stage, easing regulations in new business fields, and diversifying investment recovery strategies.