• International Journal of Computer Science & Network Security
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• 제23권7호
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• pp.79-90
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• 2023

Leadership development corresponds to the focus on the individual's success and competitiveness strategy. This is the optimal direction of the organization of attitude development because it covers two aspects of the student's personality development, professionally-oriented and self-centric. The aim of the study is to identify and compare the leadership level in second-and fourth-year students to see dynamics of development and implementation of the leadership phenomenon in the professional and personal making up of future specialists. Based on the theoretical analysis of the issue, the authors developed an objective and subjective diagnostic model for leadership skills. In this study, data of the objective diagnostic technique are the key. Subjective diagnostic technique for leadership skills provides insights for problem interpretation. At the level of the first group of respondents, the average Leadership Skills Level of the second-year students was quite low and was found within the medium level. The second group of respondents consisting of the fourth-year students showed a slight but effective improvement. The Leadership Skills of this group were found at a sufficient level. Positive dynamics was revealed for all criteria of leadership skills as a result of applying objective diagnostic methods: decreased percentage of students with negative and relatively low markers of Leadership Skills Level and corresponding increase in percentage of applicants with positive markers of Leadership Skills Level. Further research can be organized in the direction of identifying and developing successful universal and professionally-oriented tactics for leadership development in students as part of attitude development.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.443-449
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• 2022

With climate change and the global population growth, the frequency and scope of wildfires are constantly increasing, which threatened people's lives and property. For example, according to California Department of Forestry and Fire Protection, in 2020, a total of 9,917 incidents related to wildfires were reported in California, with an estimated burned area of 4,257,863 acres, resulting in 33 fatalities and 10,488 structures damaged or destroyed. At the same time, the ongoing development of technology provides new tools to simulate and analyze the spread of wildfires. How to use new technology to reduce the losses caused by wildfire is an important research topic. A potentially feasible strategy is to simulate and analyze the spread of wildfires through computing technology to explore the impact of different factors (such as weather, terrain, etc.) on the spread of wildfires, figure out how to take preemptive/responsive measures to minimize potential losses caused by wildfires, and as a result achieve better management support of wildfires. In preparation for pursuing these goals, the authors used a powerful computing framework, Spark, developed by the Commonwealth Scientific and Industrial Research Organization (CSIRO), to study the effects of different weather factors (wind speed, wind direction, air temperature, and relative humidity) on the spread of wildfires. The test results showed that wind is a key factor in determining the spread of wildfires. A stable weather condition (stable wind and air conditions) is beneficial to limit the spread of wildfires. Joint consideration of weather factors and environmental obstacles can help limit the threat of wildfires.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2022년도 학술발표회
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• pp.334-334
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• 2022

Improvement of old-fashioned rain gauge systems for automatic, timely, continuous, and accurate precipitation observation is highly essential for weather/climate prediction and natural hazards early warning, since the occurrence frequency and intensity of heavy and extreme precipitation events (especially floods) are recently getting more increase and severe worldwide due to climate change. Although rain gauge accuracy of 0.1 mm is recommended by the World Meteorological Organization (WMO), the traditional rain gauges in both weighting and tipping bucket types are often unable to meet that demand due to several existing technical limitations together with higher production and maintenance costs. Therefore, we aim to introduce a newly developed and cost-effective hybrid rain gauge system at 0.1 mm accuracy that combines advantages of weighting and tipping bucket types for continuous, automatic, and accurate precipitation observation, where the errors from long-term load cells and external environmental sources (e.g., winds) can be removed via an automatic drainage system and artificial intelligence-based data quality control procedure. Our rain gauge system consists of an instrument unit for measuring precipitation, a communication unit for transmitting and receiving measured precipitation signals, and a database unit for storing, processing, and analyzing precipitation data. This newly developed rain gauge was designed according to the weather instrument criteria, where precipitation amounts filled into the tipping bucket are measured considering the receiver's diameter, the maximum measurement of precipitation, drainage time, and the conductivity marking. Moreover, it is also designed to transmit the measured precipitation data stored in the PCB through RS232, RS485, and TCP/IP, together with connecting to the data logger to enable data collection and analysis based on user needs. Preliminary results from a comparison with an existing 1.0-mm tipping bucket rain gauge indicated that our developed rain gauge has an excellent performance in continuous precipitation observation with higher measurement accuracy, more correct precipitation days observed (120 days), and a lower error of roughly 27 mm occurred during the measurement period.

• 한국수소및신에너지학회논문집
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• 제34권6호
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• pp.623-630
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• 2023

Recently, a hydrogen charging station-related memorandum of understanding (MOU) was signed between Korea Transport Institute and United Arab Emirates (UAE) Ministry of Transport in Abu Dhabi, creating a foundation for exporting green hydrogen charging stations and hydrogen powered public transit buses developed with Korean technology to Abu Dhabi. Reliable construction and operation of the charging stations require a thorough review on associated standards and legal requirements. In particular, it is essential to analyze currently effective standards related to hydrogen production, hydrogen vehicle charging, and hydrogen charging stations. This paper specifically focuses on comparative analysis of hydrogen-related standards in the UAE and the Republic of Korea. Similar to UAE, Korean hydrogen charging station-related standards follow International Organization for Standardization (ISO) standards. From real-life experiences in developing and operating charging stations, even more essence of ISO standards have been adopted in Korean standards than UAE. In particular, ISO standards related to fire prevention are additionally included in Korea. This paper also suggests procedural and administrative strategies for enabling application of Korean hydrogen charging station-related standards in UAE.

• 대한조선학회논문집
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• 제60권6호
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• pp.441-449
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• 2023

With the enforcement of environmental regulations by the International Maritime Organization, the market for eco-friendly ships is expanding, and ships using electric propulsion devices are emerging as a promising solution. Many studies have been conducted to predict the failure of ships, but most of them are mainly research on the main diesel engine of ships. As the ship's propulsion method changes, new data is needed to predict the failure of electric propulsion ships. In this paper aims to analyze the failure characteristics of the electric propulsion system in consideration of the difference in the type of failure between the internal diesel engine and the electric propulsion system. The ship's propulsion unit assumed a DC motor and a signal pattern for normal conditions and general failure modes, but the failure record of the electric propulsion device operated on the actual ship was not available, so it generated a failure signal for small electric motor equipment to identify the failure signal. Assuming unbalance, misalignment, and bearing failure, which are the primary failure modes of the ship's electric motor, a failure signal was generated using a "rotator vibration data generator," and the frequency band, size, and phase difference of the measured vibration signal were analyzed to analyze the characteristics of each failure condition. Finally, the characteristics of each failure condition were identified so that the signals according to the failure type could be classified.

• 토지주택연구
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• 제15권1호
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• pp.99-115
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• 2024

본 연구의 목적은 마르세유의 유로메디테라네의 사업 현황과 특성을 살펴보고, 국내 도시재생사업의 활성화를 위한 정책적 시사점을 도출하는 것이다. 연구결과를 요약하면 다음과 같다. 첫째, 유로메디테라네는 마르세유의 도시재생사업으로, 중앙정부와 지방정부가 공동으로 출자･협력한 거버넌스형 사업추진기구인 EPAEM을 통해 사업을 수행하여, 유로메디테라네가 마르세유의 활성화와 삶의 질 개선에 의미 있는 성과를 보임을 확인할 수 있다. 둘째, 도시재생사업으로서 유로메디테라네의 특성으로는 전면 재개발과 수복재개발 방식을 결합한 복합적 접근방법의 활용, 하드웨어적인 물리적 재생과 소프트웨어적인 경제･문화･환경적 재생을 결합한 통합적 재생의 활용, 거버넌스형 도시재생 사업구조의 활용을 들 수 있다. 마지막으로, 국내 도시재생사업의 활성화를 위한 정책적 시사점으로 도시재생사업 단위의 복합화 및 대형화, 국가차원의 거버넌스형 추진기구의 활용, 적절한 민관 파트너십의 활용을 제안하였다.

• 지식경영연구
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• 제24권4호
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• pp.1-22
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• 2023

지식의 저장, 창조, 공유, 그리고 조직 경영활동으로의 적용으로 정의(Turban et al., 2003)할 수 있는 지식경영(knowledge management)은 무형의 지적자산이 경쟁우위의 근원이 되는 현 지식기반사회에서 학계와 실무 모두의 관심을 오랜 기간 받고 있다. 본 연구는 한국연구재단에서 운용하는 한국학술지인용색인(Korea Citation Index, KCI)을 활용하여 '지식경영' 키워드가 포함된 국내 논문에 대한 키워드분석을 수행하여 지식경영관련 국내연구 동향을 파악한다. 분석 결과 지식경영은 다양한 분야, 다양한 이론들과 접목하여 연구가 진행되고 있어 향후 연구주제의 확장가능성과 학문간 융합을 촉진하는 역할을 할 수 있음을 시사하였다. 또 지식경영 관련 연구는 높은 빈도로 '혁신' 키워드를 함께 포함하고 있어 조직 및 기술 혁신에 있어 주요한 역할을 하고 있음을 확인하였고, 연도별 분석 결과 해당 시기의 주요 환경변화를 반영하는 키워드들이 함께 제시되고 있어 4차 산업혁명 시대에서 지식경영의 역할은 더욱 중요해지고 있음을 확인할 수 있었다.

• Safety and Health at Work
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• 제14권4호
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• pp.347-357
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• 2023

Introduction: The COVID-19 pandemic turned biological hazards in the working environment into a global concern. This systematized review of published reviews aimed to provide a comprehensive overview of the specific jobs and categories of workers exposed to biological hazards with the related prevention. Methods: We extracted reviews published in English and French in PubMed, Embase, and Web of Science. Two authors, working independently, subsequently screened the potentially relevant titles and abstracts recovered (step 1) and then examined relevant full texts (step 2). Disagreements were resolved by consensus. We built tables summarizing populations of exposed workers, types of hazards, types of outcomes (types of health issues, means of prevention), and routes of transmission. Results: Of 1426 studies initially identified, 79 studies by authors from every continent were selected, mostly published after 2010 (n = 63, 79.7%). About half of the reviews dealt with infectious hazards alone (n = 38, 48.1%). The industrial sectors identified involved healthcare alone (n = 16), laboratories (n = 10), agriculture (including the animal, vegetable, and grain sectors, n = 32), waste (n = 10), in addition of 11 studies without specific sectors. The results also highlighted a range of hazards (infectious and noninfectious agents, endotoxins, bioaerosols, organic dust, and emerging agents). Conclusion: This systematized overview allowed to list the populations of workers exposed to biological hazards and underlined how prevention measures in the healthcare and laboratory sectors were usually well defined and controlled, although this was not the case in the agriculture and waste sectors. Further studies are necessary to quantify these risks and implement prevention measures that can be applied in every country.

• 한국산업보건학회지
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• 제34권2호
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• pp.115-124
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• 2024

Objectives: The aim of this study is to assess indoor air quality within and around buildings and evaluate the health risks associated with exposure to indoor air pollution. The study compares IAQ standards established by the World Health Organization with those set by South Korea's Ministry of Environment and Ministry of Education. Methods: The study utilized an Anderson Sampler and DustTrak^TM II to collect samples of total airborne bacteria and PM in indoor and outdoor environments. Collected samples were analyzed using biological and biochemical methods. Statistical analysis was conducted using SPSS to examine the correlation between airborne bacteria and PM. Results: The study revealed that the concentration of total airborne bacteria in indoor air generally remained below the Ministry of Environment's standard of 800 CFU/m³, although it surpassed this threshold in certain instances. PM concentrations did not exceed the standards. Indoor fine dust concentration was higher when there were people (P<0.05). There was no difference in total floating bacterial concentrations between indoor and outdoor environments (P=0.184). Finally, there was a correlation between fine dust and airborne bacteria concentrations. Conclusion: The study evaluated the concentrations of total airborne bacteria and PM in indoor air, emphasizing the importance of managing IAQ. Further research in various environments is essential to ensure a healthy indoor environment. The findings underscore the need for ongoing research and management to enhance IAQ and create safer and healthier living environments.

• 한국가스학회지
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• 제28권2호
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• pp.56-65
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• 2024

본 연구는 탄소중립을 위해 노력하는 가스 관련 에너지 기업(기관)의 ESG 활동이 종업원의 조직 자부심과 조직 신뢰를 통해 직무성과에 미치는 영향을 분석하기 위한 목적으로 진행되었다. 345명의 가스 관련 공공기관과 민간기업에 종사하는 직원의 설문 결과를 Smart PLS 4.0을 사용하여 분석하였으며, 연구모형과 가설을 설정한 후 검증하였다. 검증 결과 환경(E) 활동과 관련한 ESG 활동은 조직 자부심과 조직 신뢰에 영향을 미치지 않았으나, 사회(S) 활동과 지배구조(G) 활동은 조직 자부심과 조직 신뢰에 유의한 영향을 미치는 것으로 나타났으며, 조직 자부심과 조직 신뢰는 직무성과에 영향을 미치는 것으로 나타났다. 특히 ESG 조직구성원의 조직 자부심이 높을수록 조직신뢰가 직무성과에 미치는 영향이 높은 것을 확인하였다. 본 연구는 가스 관련 에너지 기업(기관)의 ESG 활동과 관련하여 발전적 방향을 제시하고자 한다.