• Journal of Korean society of Dental Hygiene
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• v.23 no.1
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• pp.33-42
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• 2023

Objectives: Based on the strengths of augmented reality (AR), this study aimed to determine the dental plaque removal efficiency of a guided brushing program in children. Methods: This randomized, controlled, double-blind crossover clinical trial evaluated the plaque removal rate after regular brushing versus AR-based guided toothbrushing in 20 children aged 5-12 years. Results: Overall, the dental plaque removal efficiency of AR-based brushing was superior to that of regular brushing (p<0.05). When classified in detail, no significant difference was noted in the plaque removal rate between the two brushing methods in the anterior region (p=0.056), whereas a significant difference in the plaque removal rate was observed in the posterior region (p<0.05). Conclusions: Based on these results, the efficacy of dental plaque removal for brushing using an AR-based smartphone application was confirmed; thus, this can be used for oral health education incorporating ICT technology in the future.

• Journal of Bio-Environment Control
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• v.27 no.2
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• pp.147-157
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• 2018

With the rapid development of the 4th industrial revolution, the large-sized facilities of agriculture have been developed with high-technologies. However, it is difficult to maintain the optimum environment in large-sized facilities. Although it is essential to control micro-climate properly in large-sized facilities, there are a lot of problems to utilize high-technologies and equipment because of insufficient education for farmers. Most farms have limitations to access to their farm because of prevention of epidemics, exposure of management know-how, and so on. Especially, it is difficult to understand internal environmental factors (airflow, temperature, humidity, etc.) for farmers because these factors are invisible. Recently, Virtual reality technology which allows users to experience various phenomena directly is attracting attention. Virtual reality is very useful technology to visualize airflow and temperature distribution and so on. However, there is no cases applied this technology to agricultural facilities. In this study, research trends of virtual reality in various fields were investigated. In particular, the limitation and possibility of virtual reality technology were analyzed for educating farmers. Finally, the development of virtual reality contents for smart-farm facility were suggested.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.17 no.2
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• pp.53-64
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• 2022

The purpose of this study is to analyze the difference in importance and performance of the university start-up support system focusing on D university students to grasp the perception of the start-up support system provided the university from the perspective of students who are real users. Through this, a plan for qualitative growth and advancement of the university start-up system was derived using the IPA (importance-performance analysis) analysis. The findings are as follows. The importance of all elements of university start-up education and start-up support system is higher than the performance, which means that the start-up education and support programs currently implemented by universities are recognized as important, but do not play a big role in terms of performance for students. In addition, the highest priority factors for improvement in the importance-performance matrix were funding and investment support, start-up space and facilities support, management advisory, patent and intellectual property support, and entrepreneurship field practice. Therefore, This study can be used as objective data to identify the factors that universities should focus on and establish a start-up support system from a long-term perspective, and to build and operate a start-up support system that reflects the needs of students.

• Journal of Practical Engineering Education
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• v.14 no.2
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• pp.387-392
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• 2022

To participate in global carbon neutrality, the Korean government is also planning to carry out zero-energy building certification for all buildings by 2030 through the enforcement decree of the 'Green Building Support Act'. Accordingly, the government is providing various projects related to solar power generation, which are relatively close to life. In particular, roof-mounted photovoltaic power generation systems are attracting attention in terms of using unused space to produce energy without destroying the environment, but low power generation efficiency compared to other photovoltaic power generation facilities is pointed out as a disadvantage. Therefore, in this paper, to solve this problem, we propose an efficient solar panel angle variable system through research on the solar panel structure for single-axial solar tracking, and also consider the application environment of the roof-mounted solar power generation system. Suggests measures to prevent damage and secondary damage. In addition, it is judged that it is possible to control the solar panel based on ICT convergence and configure the accident prediction safety system to link the project-based education program.

• Journal of Bio-Environment Control
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• v.31 no.4
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• pp.485-496
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• 2022

Modern agriculture is being transformed into smart agriculture to maximize production efficiency along with changes in the 4th industrial revolution. However, rural areas in Korea are facing challenges of aging, low fertility, and population outflow, making it difficult to transition to smart agriculture. Among ICT technologies, simulation allows users to observe or experience the results of their choices through imitation or reproduction of reality. The combination of the three-dimension (3D) model and the greenhouse simulator enable a 3D experience by virtual greenhouse for fruits and vegetable cultivation. At the same time, it is possible to visualize the greenhouse under various cultivation or climate conditions. The objective of this study is to apply the greenhouse climate management model for simulation development that can visually see the state of the greenhouse environment under various micrometeorological properties. The numerical solution with the mathematical model provided a dynamic change in the greenhouse environment for a particular greenhouse design. Light intensity, crop transpiration, heating load, ventilation rate, the optimal amount of CO₂ enrichment, and daily light integral were calculated with the simulation. The results of this study are being built so that users can be linked through a web page, and software will be designed to reflect the characteristics of cladding materials and greenhouses, cultivation types, and the condition of environmental control facilities for customized environmental control. In addition, environmental information obtained from external meteorological data, as well as recommended standards and set points for each growth stage based on experiments and research, will be provided as optimal environmental factors. This simulation can help growers, students, and researchers to understand the ICT technologies and the changes in the greenhouse microclimate according to the growing conditions.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.69-69
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• 2022

2010년부터 2019년까지 지난 10년간 한국의 ODA 현황을 규모와 유형 측면에서 살펴보면, 양자 간 원조 중 유·무상원조 비중은 큰 변동 없이 OECD DAC 회원국의 평균을 밑돌고, 다자 간원조는 21~31% 수준을 유지하고 있다. 프로젝트 원조가 꾸준히 가장 큰 비중을 차지하며 사회 인프라 및 서비스 분야에서 가장 많은 사업이 추진되고 있다. 특히, 수자원과 위생 부문은 사회 인프라 및 서비스 분야에서 보건(33%)과 교육(25%)에 이어 가장 높은 비중(19%)을 차지하고 있다(10년 누계, 약정 기준). 2020년 7월, 현 정부는 '개발 협력을 통한 코로나19 회복력 강화 프로그램(Agenda for Building resilience against COVID-19 through development cooperation, 일명 ABC 프로그램)'을 발표하고, 개도국의 경제·사회 회복력 강화를 위하여 기존 ODA 사업에 ICT와 친환경 사업 요소를 접목한 디지털 및 그린뉴딜 ODA 사업을 적극 발굴, 추진하겠다고 밝혔다. 지난 10년간, 한국과 가장 많은 다자 간 원조를 추진한 지역개발은행(36%)과 세계은행그룹(35%)에서도 코로나19와 같은 위기극복하기 위한 뉴노멀로서 환경 사업의 비중을 높이고 있다. 예컨대, 아시아개발은행은 코로나19에 대응하기 위한 도시 차원의 단·중기 행동 계획으로 도시 상하수도 시설의 지속적인 원활한 운영과 필수적인 물, 위생, 보건(WaSH) 서비스 제공을 최우선적인 조치로 발표하였다. 이러한 배경에서 본 연구는 한국의 ODA 정책 방향을 검토하고 국제사회의 추진 동향을 분석하여 향후 한국이 특화하고 경쟁력을 가질 수 있는 환경 분야의 ODA 전략을 제시하고자 한다. 본 연구 결과는 ODA를 통해 해외 진출을 도모하는 민간기업과 국력 향상의 수단으로써 ODA를 적극적으로 활용하겠다는 기조를 지닌 새 정부의 ODA 전략 수립에 기여할 수 있을 것이다.