• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2008.10a
• /
• pp.817-820
• /
• 2008

Development of computer and internet has permitted cyber education transcending time and space, which escapes traditional classroom. As a result, the study of learner's own leading in Web-based instruction environment can be possible. In order to perform it effectively, suitable helps and advices, called scaffolding, must be offered. In this pater, we select a principle of computer in information technology basic subject of technical high school, and design and implement the web contents that provide the proper scaffolding for learners.

• Science of Emotion and Sensibility
• /
• v.9 no.4
• /
• pp.385-394
• /
• 2006

In the present society where aesthetic designs would have product value, designs must be the ones that add flexible sensation as well as the energy of counteraction which escapes from and destroys existing concept. The 'creative expression' to reach such design objectives is one of the most important abilities which designers must possess and is an overall concept in problem solving of designing which participates in formative approach or image development as well as product concepts such as function or performance . In this research, the definition of creativity, environmental change of designing, conditions designers must possess followed by these things and creative design expressions researched in the past, etc are examined and by presenting design method for creative designing concept targeting mobile phones, it will attempt to contribute in the importance of creativity and improve creative value of designers.

• Journal of Plant Biotechnology
• /
• v.36 no.4
• /
• pp.366-372
• /
• 2009

This study was conducted to develop new lines expressing the characteristic of early flowering by introducing MdMADS2 gene in chrysanthemum (Dendranthema grandiflorum (Ramat.) Kitamura) ‘Zinba'. Transformation of chrysanthemum was conducted by Agrobacterium tumefaciens LBA4404 harboring the binary vector containing MdMADS2 controlled by double CaMV 35S promoters. Ninety three shoots were regenerated from 1,463 leaf segment explants cultured on the first selection medium (MS basal salts + 1.0 mg/L BA + 0.5 mg/L IAA + 10 mg/L kanamycin + 400 mg/L cefotaxime, pH 5.8) after co-cultivation, and 20 out of the 93 shoots rooted on the second selection medium containing 20 mg/L kanamycin and 400 mg/L cefotaxime. Many escapes (98.6%) were removed on the selection stage for rooting. Nineteen lines were confirmed as transgenic plant with transgene by PCR analysis. Six transgenic plants flowered 2-11 days earlier than non-transgenic plant without big change of phenotype, and especially, 3 (Mo-7, Mo-11, Mo-17) out of 6 transgenic lines showed a significant reduction in days to flowering compared to non-transgenic plant. Introduction and expression of MdMADS2 gene in them were confirmed by Southern and real-time PCR analyses, respectively.

• Journal of Welding and Joining
• /
• v.28 no.4
• /
• pp.61-66
• /
• 2010

Silicon nitride is widely used as an engineering ceramics because it has high strength, abrasion resistance and corrosion resistance even at high temperature. However, machining of silicon nitride is difficult due to its high hardness and brittleness. Laser assisted machining(LAM) allows effective cutting using CBN tool by locally heating the cutting part to the softening temperature of YSiAlON using the laser beam. The effect of preheating depending on process parameters were studied to find out the oxidation mechanism. If silicon nitride is sufficiently preheated, the surface is oxidized and $N_2$ gas is formed and escapes from the material, thereby making the cutting process more advantageous. During laser preheating process before machining, high temperature results in strong oxidation which makes the bloating, silicate layers and micro cracks. Using the results of these experiments, preheating characteristics and oxidation behavior were found out.

• Human Ecology Research
• /
• v.56 no.2
• /
• pp.195-203
• /
• 2018

Online game digital hanbok has an aesthetic value in a digital culture and is useful for developing a digital hanbok design for online games as well as other industries. This thesis analyzes its attire and design composition elements to design a 3D digital hanbok by utilizing its formative characteristics. The literature review defines them as transmutability, virtuality, fictionality, reality and playfulness based on the characteristics of digital media, late digital generation and online games. We analyzed 471 images from 50 online games. Sonmaep was used for making 3D digital hanboks. Its attire was grouped into jogori pants, jogori chima, po and armor. Its design composition elements were classified as pleat, layering mu or hemline, mu sub gyeopmagi mitbadae, vent, git dongjung and decoration elements. The results feature 8 digital hanbok designs. Reality designs are replicas of jogori daegugo for men and po for women in the period of the Three States. Virtuality designs are slightly changed shapes of yoseoncheolrik for men and white jogori yellow chima for women in the Koryo Dynasty. Fictionality designs are casual fusion armors for men and women as a hyperbolic form. Playfulness designs are doll costumes for men and jogori chima for women as a kitsch and childish style. The concept of online game digital hanbok escapes from conceptual limitations of traditional hanboks. This result can be used for designing digital hanbok contents in various industrial parts.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2007.06a
• /
• pp.449-449
• /
• 2007

OLED has many advantages of low voltage operation, self radiation, light weight, thin thickness, wide view angle and fast response time to overcome existing liquid crystal display (LCD)'s weakness. Therefore, It draws attention as promising display and has already developed for manufactured goods. Also, OLED is regarded as a only substitute of flexible display with a thin display. A considerable portion of the light originating film emissive centers buried in a solid film never escapes due to internal reflection at the air-film interface and is scattered as edge emission or dissipated within the solid film This is one of the major reasons why the luminous power efficiency of OLED remains low, in spite of research progress in OLED. Although several ways of overcoming this difficulty have been reported, no comprehensive method has been proposed yet. In this paper, we propose that use of anti-reflective coating layers.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2007.11a
• /
• pp.442-443
• /
• 2007

Al-N co-doped ZnO films were fabricated on n-Si (100) and homo-buffer layers in the mixture of oxygen and nitrogen at $450^{\circ}C$ by magnetron sputtering. Target was ZnO ceramic mixed with $2wt%Al_2O_3$. XRD spectra show that as-grown and $600^{\circ}C$ annealed films are prolonged along crystal c-axis. However they are not prolonged in (001) plane vertical to c-axix. The films annealed at $800^{\circ}C$ are not prolonged in any directions. Codoping makes ZnO films unidirectional variation. XPS show that Al content hardly varies and N escapes with increasing annealing temperature from $600^{\circ}C\;to\;800^{\circ}C$. The electric properties of as-grown films were tested by Hall Effect with Van der Pauw configuration show some of them to be p-type conduction.

• Proceedings of the Acoustical Society of Korea Conference
• /
• 1994.06a
• /
• pp.662-667
• /
• 1994

This paper presents the design and construction details of a soundproof enclosure for housing 20 KVA diesel generator-set. As the generator had to be installed close to the hospital building, it was desirable to reduce the transmission of noise by housing the generator in such an enclosure. The diesel engine being an air cooled one, it was essential to supply fresh air into the enclosure for its cooling. Forced inflow of air is provided through an inlet duct located in such a way that the incoming fresh air is thrown close to the inlet of cooling fan of the engine. The high velocity air stream, which heats up while passing over the engine head, escapes to the atmosphere through a rectangular outlet duct with enlarges inlet that receives hot air from the engine. The air ducts were designed specially and have been provided with acoustic lining for sound absorption. The masonary enclosure has been provided with double glazed fixed windows and double doors. The exhaust pipe of the engine fitted with a muffler has been taken out through the enclosure wall facing away from the hospital. Acoustic performance studies conducted in terms of attenuation provided by the enclosure at different frequencies have also been presented and discussed. The noise control measures adopted for building the sound-proof enclosure have been found to be quite effective as the noise levels inside the hospital building are now within the acceptable limits.

• Industry Promotion Research
• /
• v.8 no.1
• /
• pp.135-141
• /
• 2023

Snakes are objects that appear in religions, folktales, and folktales of various countries, and have had a great influence on human spirit and culture since ancient times. In this study, we focused on the shedding of skin in the ecology of snakes and dealt with related symbols. In the process of shedding its skin, the snake overcomes difficulties and pains, grows, and escapes death to gain a new life. This has the meaning of individuation through the process of psychological transformation by overcoming hardships. This shedding of skin was recognized as a symbol of wisdom, transformation, rebirth, and healing in myths, religions, and folktales, and settled in people's unconscious.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2023.05a
• /
• pp.219-220
• /
• 2023

The thermal conductivity of the insulation material has a great influence on the heat transmission coefficient, which is currently used for energy evaluation of buildings. The thermal conductivity of insulation changes with changes in the environment, such as humidity and ultraviolet rays, and can be expected to with the passage of time. But there is a lack of data on this, so this study measured the thermal conductivity of organic insulation according to environmental conditions and time, As a result, in the case of XPS, the thermal conductivity value increased over time, which is estimated to be due to the decrease in insulation performance as the foaming gas escapes to the outside, and in the case of PIR class2 No.2 and PIR noncombustible, the increased thermal conductivity value is similar, but in the case of PIR class2 No.2, a relatively moderate increase can be seen, and in the case of PIR noncombustible, a large increase is seen at the beginning, which is judged to be due to the decrease in insulation performance as the internal foaming gas is substituted with air from the outside.