• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.714-715
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• 2011

본 연구에서는 합리적인 기술개발 투자를 위한 배전기술개발 우선순위 결정 알고리즘을 개발하여, 최적의 배전기술개발 구현방법을 제시한다. 또한, 이들 알고리즘과 기술개발 체계도에 근거한 배전기술개발 장단기 계획(안)을 종합적으로 제시하며, 분야별 기술개발 추진안과 세부과제별 추진안을 구체적으로 제안한다. 구체적으로는 합리적인 기술개발 장단기 계획안을 수립하기 위하여, 적당한 근거와 절차에 의하여 대상기술을 선정해야 하는데, 이러한 기술개발의 우선순위를 나타내는 적정한 평가기준치를 제시하고, 이 값을 기술개발 선행지표와 평가함수식에 의해 산출하는 우선순위 평가알고리즘을 제시한다.

• YAKHAK HOEJI
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• v.57 no.6
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• pp.394-399
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• 2013

In this study we demonstrated whether the extract of Polygonum aviculare L. (PAE) can be applied to the immune-stimulating responses in macrophages (Raw 264.7 cells). Cell viability was determined by WST-8 assay, and all four doses of PAE (5, 10, 20, and 40 ${\mu}g/ml$) had no significant cytotoxicity during the entire experimental period. PAE increased the production of inducible nitric oxide synthase (iNOS) and nitric oxide (NO), and mRNA expressions and protein levels of pro-inflammatory cytokines(tumor necrotic factor (TNF)-${\alpha}$, interleukin (IL)-$1{\beta}$ and IL-6) in the same cells. These immune-stimulating activities of PAE were found to be caused by the stimulation of $NF{\kappa}B$ signal and phosphorylation of MAP kinases (p38, ERK and JNK).

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1604-1607
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• 2009

YAG laser crystallization of Si-based thin film deposited on plastic substrate has been studied. The Si-based thin films as crystallization precursor are with varied hydrogen (H) content. The effect of the H content on the crystallinity of the resulted poly-Si film has been investigated. The experimental results of the poly-Si crystallized by doublefrequency YAG laser shows that the initial dehydrogenation process could be left out if ${\mu}c$-Si was adopted as the crystallization precursor. The YAG laser annealing condition on plastic substrate and the crystallization results have been discussed in the paper.

• Advanced Composite Materials
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• v.18 no.2
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• pp.187-195
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• 2009

Much attention has been paid to the processing of inorganic whisker, especially calcium carbonate whisker, which can be used as reinforcement materials of polymer composite due to its low price. Unfortunately, the present synthesis technique of calcium carbonate whisker starts from calcinations of limestone, which involves high energy consumption and furthermore is a highly environment polluting reaction. In this report, needle-like aragonite was synthesized with a reversible solution reaction from limestone without calcination. Optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were used to characterize the morphology and crystal structure of intermediates as well as that of the product, aragonite. GCC (grinding calcium carbonate) powder was dissolved in an aqueous solution of magnesium sulfate with reflux and air flush. EDTA titration was used to evaluate reaction rate of the dissolution. A kinetics equation of the dissolution reaction was constructed, which displayed second-order kinetics with respect to the concentration of magnesium sulfate. A rate constant of $0.0015\;l^{-3}{\cdot}mol^{-1}{\cdot}h^{-1}$ was obtained. The dissolution reaction gave fiber-like magnesium hydroxide sulfate and gypsum crystal. Then needle-like aragonite with a length of $9.13\;{\pm}\;1.02\;{\mu}m$ and an aspect ratio of $5.64\;{\pm}\;1.37$ was synthesized from the dissolution product with $CO_2$ bubbling at $70^{\circ}C$.

• Nuclear Engineering and Technology
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• v.51 no.8
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• pp.1970-1977
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• 2019

Understanding the irradiation hardening effect of structural steels under various irradiation conditions plays an important role in developing advanced nuclear systems. Such being the case, a crystal plasticity model for body-centered cubic (BCC) crystal based on the density of dislocations and irradiation defects is summarized and numerically implemented in this paper. Based on this model, nano-indentation hardness of Chinese A508-3 steels with ion irradiation is calculated. Very good agreement is observed between simulation and experimental data of several different irradiation doses subjected to various operating temperatures, from which, it can be concluded that indentation hardness increases with increasing irradiation dose at both room temperature and high temperature. Consequently, the validity of this model has been proved properly, and furthermore, the model established in this paper could guide the study of irradiation hardening effect and temperature effect to some extent.

• Journal of Fisheries and Marine Sciences Education
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• v.11 no.2
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• pp.115-138
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• 1999

Since the STCW-F convention was adopted, The states concerned, has been investigated in many ways to adopt the prevailing circumstance and condition, accordingly, all preparation will be provided to accept the STCW-F convention to promote the safety of life and prevention of pollution. Prior to enter into force of this convention, we have to investigate the matter of policies, and must have great international concern to the seamen's education. Especially, we should discuss functional skill and knowledge matrix of fishing vessel seamen's education with the supplementary studies, and therefore, we should reflect to the contents, methods of education, inducement of advanced technics, application of education all aids to meet the acceptance of STCW-F convention. Also, we are attempt to implement to accept high quality of fishing vessel seamen's education as the application of simulator and any other advanced devices in future.

• International Journal of Advanced Culture Technology
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• v.12 no.3
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• pp.1-12
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• 2024

In the contemporary academic landscape, there is a notable shift from purely information-driven approaches to those emphasizing convergence, creativity, and innovation. This study examines the principles and characteristics of interdisciplinary education in premier educational institutions. Through in-depth interviews, field visits, literature reviews, and case analyses, we analyzed representative interdisciplinary programs. Our findings reveal that successful interdisciplinary education requires: (1) broad disciplinary convergence, (2) the establishment of independent educational institutions and specialized programs, (3) collaboration between faculty and practitioners from diverse academic backgrounds, (4) physical spaces that facilitate active communication and collaboration, and (5) effective operation of workshops and systems that support students' creative ideas. These insights offer fundamental parameters for designing and implementing interdisciplinary education programs and serve as a crucial reference for future academic and pedagogical endeavors.

• Journal of Engineering Education Research
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• v.19 no.2
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• pp.70-75
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• 2016

This paper deals with a result of case study for the development of CEA(Course-Embedded Assessment) design tool for engineering education accreditation implementing programs. Many programs have been devoting efforts to apply CEA to their engineering education. In order to effectively apply the CEA to educational program, it is required to develop the standardized form or scheme for CEA application. As a preliminary approach, we propose the design tool and the result of a case study for CEA application in engineering education.

• Journal of information and communication convergence engineering
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• v.21 no.4
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• pp.287-293
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• 2023

With the rapid development of domestic and international over-the-top markets, a large amount of video content is being created. As the volume of video content increases, consumers tend to increasingly check data concerning the videos before watching them. To address this demand, video summaries in the form of plot descriptions, thumbnails, posters, and other formats are provided to consumers. This study proposes an approach that automatically generates posters to effectively convey video content while reducing the cost of video summarization. In the automatic generation of posters, face recognition and clustering are used to gather and classify character data, and keyframes from the video are extracted to learn the overall atmosphere of the video. This study used the facial data of the characters and keyframes as training data and employed technologies such as DreamBooth, a text-to-image generation model, to automatically generate video posters. This process significantly reduces the time and cost of video-poster production.

• Korean Medical Education Review
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• v.23 no.3
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• pp.147-153
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• 2021

The coronavirus disease 2019 (COVID-19) pandemic made it necessary for medical schools to restructure their curriculum by switching from face-to-face instruction to various forms of flexible learning. Flexible learning is a student-centered approach to learning that has received interest in many educational sectors. It is a critical strategy for expanding access to higher education during the pandemic. As flexible learning includes online, blended, hybrid, and hyflex learning options, learners have the opportunity to select an instruction modality based on their needs and interests. The shift to flexible learning in medical education took place rapidly in response to the COVID-19 pandemic, and learners, instructors, and schools were not prepared for this instructional change. Through the lens of the technology acceptance model, human agency, and a social constructivist perspective, I examine students, instructors, and educational institutions' roles in successfully navigating the digital transformation era. The pandemic has also accelerated the use of advanced information and communication technologies, such as artificial intelligence and virtual reality, in learning. Through a review of the literature, this paper aimed to reflect on current flexible learning practices from the instructional design and educational technology perspective and explore emerging technologies that may be implemented in future medical education.