• Applied Chemistry for Engineering
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• v.35 no.2
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• pp.85-95
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• 2024

Direct air capture (DAC) technology plays a crucial role in mitigating climate change. Reports from the International Energy Agency and climate change emphasize its significance, aiming to limit global warming to 1.5 ℃ despite continuous carbon emissions. Despite initial costs, DAC technology demonstrates potential for cost reductions through research and development, operational learning, and economies of scale. Recent advancements in high-permeance polymer membranes indicate the potential of membrane-based DAC technology. However, effective separation of CO₂ from ambient air requires membranes with high selectivity and permeability to CO₂. Current research is focusing on membrane optimization to enhance CO₂ capture efficiency. This study underscores the importance of direct air capture, evolving cost trends, and the pivotal role of membrane development in climate change mitigation efforts. Additionally, this research delved into the theoretical background, conditions, composition, advantages, and disadvantages of permeance and selectivity in membrane-based DAC.

• Journal of the Korea Convergence Society
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• v.11 no.1
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• pp.247-257
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• 2020

The purpose of this paper is to review the performance of the Green Village Project during the last 10 years, and examine the possibility of the institutionalization of a local governance. The Green Village Project was first initiated by an environmental movement group in Cheongju City, and now various actors, including Cheongju City and City Council members, public organizations, professionals etc, are participating. The project has been continuously and stably carried out for 10 years, and the participants now recognize that the project should be carried out every year. According to the analysis, the participants recognized the project as beneficial project for them on the basis of the rational choice. And the participants recognized the project as having legitimacy, and accumulating 'trust' between participants, accumulating the experiences of success. In conclusion, the sustainability and stability of the project has been strengthened, and the institutionalization possibility of the governance of the Green Village Project has been increased continuously.

• Journal of the Korea Convergence Society
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• v.10 no.8
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• pp.165-170
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• 2019

According to the statistics of the Ministry of Land Transport and Transportation in 2018, the average annual average number of air traffic users for has increased by 5.07% for domestic flights and 8.84% for international flights. Korea is facing a steady rise in demand from foreign tourists due to the Korean Wave. At the same time, a new lifestyle that values the quality of life of individuals is taking root, along with the emergence of LCC, and Korean tourists' overseas tours are also increasing, so improvement and expansion of domestic airport passenger terminals is urgently needed. it is important to develop a structured airport infrastructure by making efficient and accurate forecasts of aviation demand. in this study, based on the Big Data, long-term domestic and international demand forecasts for urban airports were conducted.. Domestic flights will see a decrease in the number of airport passengers after 2028, and international flights will continue to increase. It is imperative to improve and expand passenger terminals at domestic airports.

• Journal of the Korea Convergence Society
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• v.12 no.3
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• pp.205-216
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• 2021

There is a growing interest and need for adaptive reuse and remodeling as a method for sustainable urban regeneration and residential improvement. The purpose of this study was to suggest implications for the remodeling of detached house for adaptive reuse in Korea. To this end, a theoretical review and case analysis was conducted on the remodeling in 'Gupo-Saetulmaul' and 'Haeridan-gil' in Busan City. The implications through the study are as follows. (1) Programs for residents participation and sustainable management of buildings are needed. (2) Coexist between residential and commercial use is needed. (3) A guideline for planning and designing street and building remodeling is needed at the level of the entire detached housing site.

• Electronics and Telecommunications Trends
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• v.21 no.3 s.99
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• pp.11-22
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• 2006

이동통신 시스템은 현재의 3세대 IMT-2000 시스템에 이르기까지 지속적인 진화를 거듭하였고 이제 사용자의 다양한 이동통신 서비스 요구 및 기대치를 충족시키기 위한 4세대 이동통신 시스템 및 서비스에 대한 관심이 지속적으로 증가하고 있다. ITU-RWP8F에서는 "보다 빠른 데이터 전송속도의 지원"과 "서로 다른 유무선 접속 시스템과 융합(convergence)"을 목표로 시간과 장소 및 대상의 구속이 없이 언제 어디서나 누구와도 고속 멀티미디어 통신 서비스를 지원하는 것을 차세대 이동통신 시스템의 비전으로 설정하고 있다. 이러한 차세대 서비스 비전을 실현하기 위하여 현재 WWRF, WWI, FMS, mITF, FuTURE Forum 및 NGMC Forum과 같은 주요 연구 단체는 개인의 관심사, 환경, 일상 생활이 고려된 각 개인의 통신 공간에서 상황에 따라 변화하는 개인의 요구사항이 반영된 차세대 서비스에 대한 연구를 수행하고 있다. 본 논문에서는 앞서 언급한 각 연구 단체가 수행중인 주요 연구 내용을 살펴보고자 한다.`

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1065-1066
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• 2023

본 연구에서 개발된 XR 게임은 이중 재활을 지원하는 핵심 도구로서 설계되었으며, 향기 분출 기능 또한 포함하고 있어 향기 치료까지 가능하도록 확장되었다. 이 프로그램은 사용자의 데이터를 세심하게 분석하여, 각 개개인의 진전을 지속적으로 추적할 수 있다. 더불어, 사용자는 과거와 현재의 데이터를 비교하고 분석하여, 지속적인 자기 개선을 위한 방향을 찾을 수 있다.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.331-339
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• 2018

The purpose of this study was to know the effects of flow in line dance class on happiness and continuous participation intention in elementary student. By using purposive sampling 271 questionnaires had been used for practical analysis. Collected data were put to frequency analysis, exploratory factor analysis reliability analysis, correlation analysis, and multiple regression analysis using the SPSS Win Ver. 22.0 program. The results of these analyses were as follows. First, the autotelic experience, the concentration, the sense of control and the sense of achievement which are the subordinate variables of the flow, were all found to have significant effects on the confidence, the autotelic experience, the sense of control and the sense of achievement which are the subordinate variables of the flow, were found to have significant effects on the self-realization, the autotelic experience, the concentration, and the sense of achievement which are the subordinate variables of the flow, were found to have significant effects on the enjoyment. Second, the autotelic experience, the concentration, and the sense of achievement which are the subordinate variables of the flow, were found to have significant effects on the continuous participation intention. Third, the confidence and the enjoyment, which are the subordinate variables of the happiness, were found to have significant effects on the continuous participation intention.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.257-268
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• 2020

The study purposed to assess how the career development before and after entering college was related to youth's college life satisfaction, and examined the effect of social relationships with parents, peers, and teachers on the association between youth's career development and their satisfaction with college lives. For this purpose, the study utilized the data of Korean Children and Youth Panel Survey (KCYPS) conducted by the National Youth Policy Institute since 2010. The study found that there was a positive correlation between career development and college life satisfaction. In addition, supportive relationships with parents and peers had significant effects on the level of career identity during high school and later satisfaction with college life. It was also found that youth who had a positive relationship with teachers in high school had a high level of career decision after entering college. The results of this study suggested the necessity of individualized career education appropriate for youth's career development levels. In addition, convergent approaches to build, maintain and develop positive social relationships could have a lasting and positive impact on youth's career development.

• Convergence Security Journal
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• v.15 no.6_1
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• pp.43-48
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• 2015

One of the background reasons of the raise of the voluntary army under the name of justice in 1728, in late Chosun period, was the discontent against the regime at that time. After the King Young-Jo ascended a throne of Chosun dynasty, some people such as Lee In-Jwa and JUNG Hee-Ryang organized rebels and raised a rebellion. At this time of a national crisis, there were people organizing the army of the justice and joining in the battles against the rebels with the royal forces of Chosun dynasty. JUNG Dong-Beum, one of the leaders of voluntary armies of justice, is a good example. For these people playing roles in the army of justice, more follow-up studies should be continued.

• Convergence Security Journal
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• v.24 no.1
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• pp.3-9
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• 2024

Currently, cyberattacks and security threats are constantly evolving, and organizations need quick and efficient security response methods. This paper proposes ways to strengthen internal network security by utilizing Unified Threat Management (UTM) equipment to improve network security and effectively manage and analyze the log data of the internal network collected through these equipment using Elastic Stack (Elasticsearch, Logstash, Kibana, hereinafter referred to as ELK Stack).