• ETRI Journal
• /
• v.41 no.1
• /
• pp.7-9
• /
• 2019

• ETRI Journal
• /
• v.44 no.6
• /
• pp.881-884
• /
• 2022

• ETRI Journal
• /
• v.42 no.4
• /
• pp.465-467
• /
• 2020

• Proceedings of the Korean Vacuum Society Conference
• /
• 2011.08a
• /
• pp.187-187
• /
• 2011

Nowadays, the issue of solar cell durability in local weather and environment is a crucial issue. Above all, surface corrosion on solar cell multilayers is a major factor that determines the durability of commercial solar cells; corrosive chemical interactions between air, humidity and chemical species and solar cell multilayers can unfavorably affect the durability. Here, we study microscopic and spectroscopic surface techniques to investigate the corrosive interaction on the antireflective layers of solar cell multilayers under various conditions such as acid, base, constant temperature and humidity. Surface morphology and adhesion force were characterized with atomic force microscopy before and after chemical treatment. Chemical composition, and transmittance factors were studied with X-ray photoelectron spectroscopy, and ultraviolet-visible spectroscopy, respectively. Based on these studies, we suggest the dominant factors in the corrosive chemical processes, and their influences on the structural, compositional, and optical properties of the antireflective layers.

• Trans-
• /
• v.2
• /
• pp.59-73
• /
• 2017

It was after mid 1990s that convergence of art and technology had become a critical issue and governments set new support system for its enrichment. Since then, the government continues to expand support programs to extend integration of art, culture and other genre including technology because nexus, convergence has regarded important competitive factors in cultural policy. The concept of convergence and complexation in culture and art has been a very attracting issue since it appeared and accordingly various policies are supported. However, there are still numerous issues and problems to be solved along with discussion. This paper summarizes government policies to support convergence and complexation of culture and art in Korea and overseas and looks into their trends and cases and then suggests development of future policies and supporting businesses.

• Journal of Information Processing Systems
• /
• v.13 no.4
• /
• pp.914-927
• /
• 2017

Weighted network link prediction is a challenge issue in complex network analysis. Unsupervised methods based on local structure are widely used to handle the predictive task. However, the results are still far from satisfied as major literatures neglect two important points: common neighbors produce different influence on potential links; weighted values associated with links in local structure are also different. In this paper, we adapt an effective link prediction model-local naive Bayes model into a weighted scenario to address this issue. Correspondingly, we propose a weighted local naive Bayes (WLNB) probabilistic link prediction framework. The main contribution here is that a weighted cluster coefficient has been incorporated, allowing our model to inference the weighted contribution in the predicting stage. In addition, WLNB can extensively be applied to several classic similarity metrics. We evaluate WLNB on different kinds of real-world weighted datasets. Experimental results show that our proposed approach performs better (by AUC and Prec) than several alternative methods for link prediction in weighted complex networks.

• International Journal of Advanced Culture Technology
• /
• v.12 no.3
• /
• pp.309-316
• /
• 2024

Due to rapid socio-economic development and environmental changes, particularly autism spectrum disorder (ASD) in the context of Attention Deficit Hyperactivity Disorder (ADHD) and high-functioning autism, has become a significant social issue. This issue is increasingly recognized from a societal perspective rather than just an individual or family problem. But there remains a lack of information in frontline education. Traditionally, treatment for ASD has been conducted in specialized institutions, or by professional doctors, therapists, and counselors. There are still several challenges such as 1) accessibility to hospitals and transportation for children with ASD, 2) the maturity and competence of therapists, and 3) the lack of appropriate educational content. To solve these problems, we propose a supplementary 3D educational game process for children with high-functioning autism that utilize speech recognition technology and games designed for continuous and repetitive learning. Our proposed game content can be used at home, which incorporates Speech-To-Text (STT) technology and mini-games to help children indirectly experience and learn to handle unexpected real-life situations. With this approach, we will expect that the children can develop social skills and enhance the efficiency of their treatment.

• Proceedings of the Korea Contents Association Conference
• /
• 2014.06a
• /
• pp.193-194
• /
• 2014

This paper provides the market opportunity analysis process and technology providing matching process based on the efficient quantitative analysis of a large amount of papers and network analysis. In the future, it is required to analyze and complement the quantitative analysis result by commercialization experts and to build emerging issue database.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2004.08a
• /
• pp.129-138
• /
• 2004

Recently, maintenance of clean ocean is very important issue. One part of the issue strongly relates to the safe navigation of vessels. Most parts of safe navigation depend on the mariner's competencies. STCW was established to guarantee the sufficient mariner's competencies. However the code dose not indicate the each necessary competency clearly. Therefore, the understandings on STCW are not same among training institutes, and each training institute interprets them individually and executes them. As a result, it makes big differences among the institutes concerning training methods and contents and the assessment on mariner's competencies. The countries in EU have paid attention on this issue and the activities enhance the rational assessment of competencies through METNET. In order to execute the rational assessments, it is necessary to clarify the techniques being assessed. And it means the necessity to clarify the necessary techniques for safe navigation and to assess the competencies to achieve them, and then we can attain the objectives of STCW. In this paper, the necessary techniques for achievement of safe navigation are discussed and the methods of assessment of competencies are proposed. As we apply proposed assessment system, we can get the mariner's competency quantitatively and continuously through training period. Then we can know the trend of the competency that is the learning process. By clarifying the learning process of the techniques, we can decide the necessary training time to achieve the competencies. Furthermore, we can discuss the issues on conversion between training onboard and simulator used training by analysing the learning processes.

• Nuclear Engineering and Technology
• /
• v.49 no.8
• /
• pp.1575-1588
• /
• 2017

In order to develop a domestic research roadmap for severe accidents, a special committee was established by the Korean Nuclear Society. One of the subcommittees discussed the characteristics and the relevant technical issues in the stages of fission product release and physical forms of radionuclide release and transport. The group members developed a tree to identify fission product release phenomena by tracing failures of individual defense-in-depth barriers and added possible countermeasures against failure. For each elemental issue, they searched for technical problems by examining the phenomena, accident management actions, and regulatory aspects relevant to the mitigation features for containment, including mitigation strategies against containment bypass accidents. Regulatory concerns, including the source term and the acceptance criteria for radionuclide release, were also considered. They identified further research needs regarding important technical issues based on the degree of the current knowledge level in Korea and in foreign countries, looking at the significance and urgency of issues and the expected research period required to reach an advanced level of knowledge. As a result, the group identified the 12 most important and urgent issues, most of which were expected to require mid-term and long-term research periods.