• Title/Summary/Keyword: Prioritization

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Evaluation of Nitrate Nitrogen Contamination Degree in Groundwater Wells, Jeju Island (제주도 지하수 관정 내 질산성질소 오염도 평가)

  • Song, Sung-Ho;Hwangbo, Dongjun;Jang, Ki-Young;Kim, Jin-Sung;Seo, Sang-Ki;Yang, Won-Seok
    • Journal of Soil and Groundwater Environment
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    • v.26 no.4
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    • pp.8-19
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    • 2021
  • In this study, the evaluation standard for nitrate nitrogen contamination degree (WELCUP) was established using six factors that influence the groundwater quality in Jeju Island. To do this, weightings, ranges, and ratings were assigned for each factor and the relative possibility of nitrate nitrogen contamination degree was evaluated using WELCUP index for each well. As a result of calculating the WELCUP index using groundwater quality data of 5,112 wells in Jeju Island for 27 years (1993-2019), all 61 wells with the WELCUP index value higher than 100 are distributed in Daejung and Hangyung watershed with relatively large area of farmland in Jeju Island. In particular, as the ratio of private wells is more than 64%, it is necessary that systematic management is needed for private wells in terms of nitrate nitrogen contamination. Consequently, based on the results of applying the WELCUP evaluation standard, it is necessary to select the prioritization of nitrate nitrogen contamination pathways project for groundwater wells in Jeju Island.

Prioritization decision for hazard ranking of water distribution network by cluster using the Entropy-TOPSIS method (Entropy-TOPSIS 기법을 활용한 군집별 상수도관망 위험도 관리순위 결정)

  • Park, Haekeum;Kim, Kibum;Hyung, Jinseok;Kim, Taehyeon;Koo, Jayong
    • Journal of Korean Society of Water and Wastewater
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    • v.35 no.6
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    • pp.517-531
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    • 2021
  • The water supply facilities of Korea have achieved a rapid growth, along with the other social infrastructures consisting a city, due to the phenomenon of urbanization according to economic development. Meanwhile, the level of water supply service demanded by consumer is also steadily getting higher in keeping with economic growth. However, as an adverse effect of rapid growth, the quantity of aged water supply pipes are increasing rapidly, Bursts caused by pipe aging brought about an enormous economic loss of about 6,161 billion won as of 2019. These problems are not only worsening water supply management, also increasing the regional gap in water supply services. The purpose of this study is to classify hazard evaluation indicators and to rank the water distribution network hazard by cluster using the TOPSIS method. In conclusion, in this study, the entropy-based multi-criteria decision-making methods was applied to rank the hazard management of the water distribution network, and the hazard management ranking for each cluster according to the water supply conditions of the county-level municipalities was determined according to the evaluation indicators of water outage, water leakage, and pipe aging. As such, the hazard ranking method proposed in this study can consider various factors that can impede the tap water supply service in the water distribution network from a macroscopic point of view, and it can be reflected in evaluating the degree of hazard management of the water distribution network from a preventive point of view. Also, it can be utilized in the implementation of the maintenance plan and water distribution network management project considering the equity of water supply service and the stability of service supply.

A Study on Prioritization of Regional Development Strategies According to Industrial Varieties and Innovation Competency (산업 다양성과 혁신역량에 따른 지역 발전전략의 우선순위 설정에 관한 연구)

  • Han, Jaepil
    • 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.

AI-based Construction Site Prioritization for Safety Inspection Using Big Data (빅데이터를 활용한 AI 기반 우선점검 대상현장 선정 모델)

  • Hwang, Yun-Ho;Chi, Seokho;Lee, Hyeon-Seung;Jung, Hyunjun
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.42 no.6
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    • pp.843-852
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    • 2022
  • Despite continuous safety management, the death rate of construction workers is not decreasing every year. Accordingly, various studies are in progress to prevent construction site accidents. In this paper, we developed an AI-based priority inspection target selection model that preferentially selects sites are expected to cause construction accidents among construction sites with construction costs of less than 5 billion won (KRW). In particular, Random Forest (90.48 % of accident prediction AUC-ROC) showed the best performance among applied AI algorithms (Classification analysis). The main factors causing construction accidents were construction costs, total number of construction days and the number of construction performance evaluations. In this study an ROI (return of investment) of about 917.7 % can be predicted over 8 years as a result of better efficiency of manual inspections human resource and a preemptive response to construction accidents.

An APT Attack Scoring Method Using MITRE ATT&CK (MITRE ATT&CK을 이용한 APT 공격 스코어링 방법 연구)

  • Cho, Sungyoung;Park, Yongwoo;Lee, Kunho;Choi, Changhee;Shin, Chanho;Lee, Kyeongsik
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.32 no.4
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    • pp.673-689
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    • 2022
  • We propose an APT attack scoring method as a part of the process for detecting and responding to APT attacks. First, unlike previous work that considered inconsistent and subjective factors determined by cyber security experts in the process of scoring cyber attacks, we identify quantifiable factors from components of MITRE ATT&CK techniques and propose a method of quantifying each identified factor. Then, we propose a method of calculating the score of the unit attack technique from the quantified factors, and the score of the entire APT attack composed of one or more multiple attack techniques. We present the possibility of quantification to determine the threat level and urgency of cyber attacks by applying the proposed scoring method to the APT attack reports, which contains the hundreds of APT attack cases occurred worldwide. Using our work, it will be possible to determine whether actual cyber attacks have occurred in the process of detecting APT attacks, and respond to more urgent and important cyber attacks by estimating the priority of APT attacks.

A comparative study on rapid seismic risk prioritization for reinforced concrete buildings in Antalya, Türkiye

  • Engin Kepenek;Kasim A. Korkmaz;Ziya Gencel
    • Computers and Concrete
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    • v.31 no.3
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    • pp.185-195
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    • 2023
  • Antalya is located south part of minor Asia, one of the biggest cities in Türkiye. As a result of population growth and vast migration to Antalya, many parts of the city that were not suitable for construction due to its geological conditions have become urban areas, and most of these urban areas are full of poorly engineered buildings. Poor engineering has been combined with unplanned urbanization, that causes utter vulnerability to disasters in Antalya. When an earthquake-prone city, Antalya faces with an earthquake risk, fear arises in society. To overcome this problem, it has become necessary to investigate the building stock, expressed in hundreds of thousands, in a fast and reliable way and then perform an urban transformation to create the perception of structural safety. However, the excessive building stock, labor, and economic problems made the implementation stage challenging and revealed the necessity of finding alternative solutions in the field. The present study presents a novel approach for assessment and model based on a rapid visual inspection method to transform areas under earthquake risk in Türkiye. The approach aimed to rank the interventions for decision-making mechanisms by making comparisons in the scale hierarchy. In the present study, to investigate the proposed approach, over 26,000 buildings were examined in Antalya, which is the fifth largest city in Türkiye that has a population of over 2.5 Million. In the results of the study, the risk classification was defined in the framework of building, block, street, neighborhood, and district scales.

Analysis of Priority in the Robotaxi Design Elements : Focusing on Application of AHP Methodology (로보택시 설계 요소 간 우선순위 분석 : AHP 방법론 적용을 중심으로)

  • Juhye Ha;Yeonbi Jeung;Junho Choi
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.22 no.4
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    • pp.179-193
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    • 2023
  • research on user-friendly experience design is crucial to reduce resistance and enhance acceptance of robotaxis. This study analyzes the prioritization of design factors in robotaxi systems and provides design guidelines based on user experience. Using the AHP(Analytic Hierarchy Process) technique, users' perceived importance of four primary design factors and sixteen 16 sub-design elements were assessed, and comfort and safety were top priorities. The results showed that the artificial intelligence agent was the most critical design factor, followed by driving guidance information, interior design, and exterior design. These findings offer valuable insights for robotaxi professionals, and could assist in informed decision-making and creating user-centered design guidelines.

A Study on Prioritization of Biopharmaceutical Industry Promotion Policy: Focusing on IPA analysis of Gyeonggi-do policy tasks (바이오의약품산업 육성 정책 우선순위 도출에 관한 연구 : 경기도 정책과제의 IPA 분석을 중심으로)

  • Kang, Jimin
    • 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.

Development of Digital Space planning Elements through the Evaluation of Importance (중요도평가를 통한 공공도서관 디지털공간 계획요소 개발)

  • Lim, Eun Young;Hwang, Yeon Sook
    • Design Convergence Study
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    • v.15 no.3
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    • pp.133-149
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    • 2016
  • In this study, I tried to provide the basic data for planning the public library space to meet the new needs of the users in digital generation by survey and literature review on factors in planning the digital space of public libraries. In 2000, a separate space for digital materials has been prepared at the most of the libraries as a part of informatization program of public libraries. However, it is not sufficient to provide a number of different needs of the users due to the identical design of all the libraries. For the prioritization, 50 factors have been deducted by review of preceding studies, evaluation factors and criteria of library of each institution. Factorial analysis was performed on the factors with the importance which was higher than average. Also, the relationships among the factors with similar properties were understood to categorize the factors in space planning by each factor. Based on these factors in planning the digital space, further space evaluation of the public library and user satisfaction survey could be followed to provide a fundamental basis for the specific space planning.

Prioritization of locations for permeable pavement considering future climate scenarios (미래 기후시나리오에 따른 투수성포장 시설 우선순위 선정)

  • Chae, Seung Taek;Choi, Hyuk Su;Chung, Eun-Sung
    • Proceedings of the Korea Water Resources Association Conference
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    • 2021.06a
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    • pp.364-364
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    • 2021
  • 최근 지구온난화에 따른 홍수 및 가뭄 재해의 피해는 심각해졌다. 그러므로 미래 재해로 인한 피해를 완화시키기 위한 수자원 계획 수립 및 관리의 중요성이 높아지고 있다. 전지구모형(General Circulation Model, GCM)은 기후 변화 연구에서 기후 요인의 변동을 조사하는데 널리 사용되어지고 있다. 본 연구에서는 기후 변화 시나리오를 고려하여 도시유역의 소유역 별 투수성포장 시설의 우선순위를 산정했다. 기후 변화 시나리오에는Representative Concentration Pathway(RCP)와 Shared Socioeconomic Pathway(SSP) 시나리오가 사용되었으며 CMIP5와 CMIP6의 GCM을 고려하였다. GCM을 이용하여 산정된 미래 월 강수량은 분위사상(Quantile Mapping)법의 비모수변환(Non-Parametirc Transformation)법 중 하나인 스플라인 평활(Smoothing Spline) 방법을 사용하여 편이보정 되었다. 연구대상지는 목감천 유역이 선정되었으며, 27개의 소유역에 대해 투수성포장 시설의 우선순위를 산정되었다. 우선순위 산정을 위한 평가 기준들은 Driving force-Pressure-State-Impact-Response(DPSIR) 모형을 기반으로 산정 되었다. 평가기준에 따른 27개의 소유역에 대한 값들은 통계청 및 국가수자원관리종합정보시스템(WAMIS), 편이보정 된 미래 강수량과 Storm Water Management Model(SWMM)을 이용한 유출분석 결과를 통해 도출했다. 평가기준들의 객관적 가중치 산정을 위해 엔트로피 방법을 이용했다. 최종적으로 목감천 소유역 별 투수성포장 시설의 우선순위 산정에는 다기준의사결정기법 중 하나인 TOPSIS방법을 사용했다. 산정 결과 DPSIR 모형을 기반으로 수문학적 요소에 큰 가중치를 부여한 경우 하류보다는 상류 유역에서 높은 우선순위를 확인했으며, 각 요소별 동일한 가중치를 주었을 때 하류 유역에 높은 우선순위가 집중되었다.

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