31 research outputs found

    ์ด์‚ฐํ˜„์ƒ ์‹œ์Šคํ…œ์˜ ๋ชจ์˜ ์‹คํ—˜์„ ์œ„ํ•œ ๊ฐœ์„ ๋œ ์„œ์—ด์ตœ์ ํ™” ๊ธฐ๋ฒ•

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์ „๊ธฐ๊ณตํ•™๋ถ€,2000.Maste

    Performance and Study of F. Haydn <Piano Sonata in c minor, Hob.XVI: 20>, J. Brahms <Piano Sonata in f minor, Op. 5>, Il Hoon Son <20 Questions>

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) -- ์„œ์šธ๋Œ€ํ•™๊ต๋Œ€ํ•™์› : ์Œ์•…๋Œ€ํ•™ ์Œ์•…๊ณผ, 2022.2. ์ตœํฌ์—ฐ.๋ณธ ๋…ผ๋ฌธ์€ ๋ณธ์ธ์˜ ์„์‚ฌ๊ณผ์ • ์กธ์—… ์—ฐ์ฃผ ํ”„๋กœ๊ทธ๋žจ์ธ F. J. Haydn , J. Brahms , Il Hoon Son ์— ๋Œ€ํ•œ ์—ฐ๊ตฌ์ด๋‹ค. ๊ฐ ์ž‘ํ’ˆ์˜ ์ž‘๊ณก ๋ฐฐ๊ฒฝ๊ณผ ๊ตฌ์กฐ๋ฅผ ์‹ฌ๋„ ์žˆ๊ฒŒ ๋ถ„์„ํ•ด ๋ด„์œผ๋กœ์จ, ๊ฐ ๊ณก์˜ ์—ฐ์ฃผ์— ๋„์›€์„ ์ฃผ๋Š” ๋ฐ ๋ณธ ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์ด ์žˆ๋‹ค.This study examined F. Haydn , J. Brahms , Il Hoon Son . The purpose of this study is to broaden the knowledge of these works for the performer thus to help them understand and perform these works better.๋ชฉ ์ฐจ ์ œ 1 ์žฅ ์„œ ๋ก  1 ์ œ 2 ์žฅ ๋ณธ ๋ก  3 1. F. Haydn &lt;Piano Sonata in c minor, Hob.XVI: 20&gt; 1.1. ์ž‘ํ’ˆ ๋ฐฐ๊ฒฝ 3 1.2. ์ž‘ํ’ˆ ์—ฐ๊ตฌ 5 2. J. Brahms &lt;Piano Sonata in f minor, Op. 5&gt; 2.1. ์ž‘ํ’ˆ ๋ฐฐ๊ฒฝ 19 2.2. ์ž‘ํ’ˆ ์—ฐ๊ตฌ 22 3. Il Hoon Son &lt;20 Questions&gt; (์Šค๋ฌด๊ณ ๊ฐœ) 3.1. ์ž‘ํ’ˆ ๋ฐฐ๊ฒฝ 48 3.2. ์ž‘ํ’ˆ ์—ฐ๊ตฌ 51 ์ œ 3 ์žฅ ๊ฒฐ ๋ก  62 ์ฐธ๊ณ ๋ฌธํ—Œ 64 Abstract 68์„

    Trends in Study of Buddhist Ecology in Korea

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    ์ด ๋…ผ๋ฌธ์€ 2011๋…„ 6์›” ๋ถˆ๊ด‘์—ฐ๊ตฌ์›๊ณผ ์„œ์šธ๋Œ€์ฒ ํ•™์‚ฌ์ƒ์—ฐ๊ตฌ์†Œ๊ฐ€ ๊ณต๋™ ์ฃผ์ตœํ•œ ์—์„œ ๋ฐœํ‘œ๋œ ๋…ผ๋ฌธ ๏ฝขํ•œ๊ตญ๋ถˆ๊ต์˜ ์ƒํƒœ๋‹ด๋ก ๊ณผ ๋ถˆ๊ต์ƒํƒœํ•™๏ฝฃ์„ ์•ฝ๊ฐ„ ์ˆ˜์ •ํ•œ ๊ฒƒ์ž„.์•ฝ 60์—ฌ ๋…„ ์ „๋ถ€ํ„ฐ ์ง€๊ตฌ์˜ ํ™˜๊ฒฝ ์œ„๊ธฐ์— ๋Œ€ํ•ด ๋งŽ์€ ์ง€์‹์ธ๋“ค์ด ๊ฒฝ์ข…์„ ์šธ๋ ค ์™”๋‹ค. ํ•˜์ง€๋งŒ ํ™˜๊ฒฝ์˜ค์—ผ๊ณผ ์ƒํƒœ๊ณ„ ํŒŒ๊ดด๊ฐ€ ์‹ฌํ™”๋˜๋Š” ๊ฐ€์šด๋ฐ ์šฐ๋ฆฌ๋‚˜๋ผ์—์„œ๋„ ํ™˜๊ฒฝ๊ณผ ์ƒํƒœ์— ๊ด€ํ•œ ํ•™๋ฌธ์  ์—ฐ๊ตฌ๊ฐ€ ํ™œ๋ฐœํ•ด์กŒ๋‹ค. ์šฐ๋ฆฌ๋‚˜๋ผ ๋ถˆ๊ตํ•™๊ณ„์—์„œ๋„ 1980๋…„๋Œ€ ์ดํ›„ ๋ถˆ๊ต์˜ ์—ฐ๊ธฐ์‚ฌ์ƒ๊ณผ ์ƒ๋ช…์กด์ค‘์‚ฌ์ƒ์„ ๋ฐ”ํƒ•์œผ๋กœ ์ƒํƒœ๋ฌธ์ œ์— ๋Œ€ํ•œ ๋…ผ์˜์™€ ์—ฐ๊ตฌ๊ฐ€ ์‚ฐ๋ฐœ์ ์œผ๋กœ ์ด๋ฃจ์–ด์ง„๋‹ค. ๊ทธ๊ฒƒ์€ ์ฃผ๋กœ ์‘์šฉ๋ถˆ๊ตํ•™์˜ ํ•œ ๋ถ„์•ผ๋กœ์„œ์˜ ๋ถˆ๊ต์ƒํƒœํ•™์— ๊ด€ํ•œ ๊ฒƒ์ด์ง€๋งŒ, ์œตํ•ฉํ•™๋ฌธ ๋˜๋Š” ํ•™์ œ์  ์—ฐ๊ตฌ๋กœ์„œ์˜ ๋ถˆ๊ต์ƒํƒœํ•™์— ๊ด€ํ•œ ๊ฒƒ๋„ ํฌํ•จ๋œ๋‹ค. ํ•œ๊ตญ ๋ถˆ๊ต๊ณ„์—์„œ ํ™˜๊ฒฝ๊ณผ ์ƒํƒœ ๋ฐ ์ƒ๋ช…์— ๊ด€๋ จ๋œ ๋ณธ๊ฒฉ์ ์ธ ์—ฐ๊ตฌ๋Š” ์—์ฝ”ํฌ๋Ÿผ์„ ์ค‘์‹ฌ์œผ๋กœ ์ด๋ฃจ์–ด์กŒ๋‹ค. ์—์ฝ”ํฌ๋Ÿผ์€ ๋ถˆ๊ต์™€ ์ƒํƒœํ•™์„ ๋น„๋กฏํ•œ ๋‹ค์–‘ํ•œ ํ•™๋ฌธ๋ถ„์•ผ์—์„œ ํ•™์ œ์  ์ ‘๊ทผ์„ ํ†ตํ•ด ์ƒํƒœ์™€ ํ™˜๊ฒฝ๋ฌธ์ œ๋ฅผ ์ง‘์ค‘์ ์œผ๋กœ ๋…ผ์˜ํ•˜๊ณ  ์‹ค์งˆ์ ์ธ ํ•ด๋ฒ•์„ ๋ชจ์ƒ‰ํ•˜๊ธฐ ์œ„ํ•ด 2004๋…„ 10์›” ์ฐฝ๋ฆฝ๋˜์—ˆ๋‹ค. ๋ถˆ๊ต์ƒํƒœํ•™ ๊ด€๋ จ ๋‹จ๋… ์ €์ˆ ๋„ ๋ช‡๋ช‡ ์ถœ๊ฐ„๋˜์—ˆ๋‹ค. ๊ทธ ๊ฐ€์šด๋ฐ ๊น€์ข…์šฑ์˜ ใ€Ž๋ถˆ๊ต์ƒํƒœ์ฒ ํ•™ใ€(2004)๊ณผ ์„œ์žฌ์˜์˜ใ€Ž์„ ์˜ ์ƒํƒœ์ฒ ํ•™ใ€(2007)์€ ๋ถˆ๊ต์ƒํƒœํ•™์˜ ๊ธฐ๋ณธ ์ด๋ก ์„œ๋กœ ์ž๋ฆฌ๋งค๊น€ํ•˜๊ณ  ์žˆ๋‹ค. ์ง€๊ธˆ๊นŒ์ง€ ํ•œ๊ตญ์—์„œ ๋ถˆ๊ต์ƒํƒœํ•™์€ ์ƒํƒœ ๋ณ€์ฆ๋ก ์ด ์ค‘์‹ฌ์ด์—ˆ์ง€๋งŒ, ์•ž์œผ๋กœ๋Š” ์šฐ๋ฆฌ๊ฐ€ ์–ด๋–ค ํƒœ๋„์™€ ํ–‰๋™์œผ๋กœ ๋ญ‡ ์ƒ๋ช…๊ณผ ์ž์—ฐ๋ฌผ์— ๋‹ค๊ฐ€๊ฐˆ ๊ฒƒ์ธ๊ฐ€ ํ•˜๋Š” ์‹ค์ฒœ๋ก ์— ๋Œ€ํ•ด์„œ๋„ ์ฒด๊ณ„์ ์ธ ์—ฐ๊ตฌ๊ฐ€ ์ด๋ฃจ์–ด์งˆ ๊ฒƒ์œผ๋กœ ์ „๋ง๋œ๋‹ค. Regarding the Earth's environmental crisis, many intellectuals have warned about the serious consequences of the destruction of worldwide ecosystems. However, in the midst of continued environmental pollution and ecosystem degradation, academic research on ecology has actively increased. Since the 1980s, within Buddhist academia in Korea, ecological discussions and research on the basis of Dependent Origination theory and life-respecting thought have been sporadically made. They have been primarily concerned with Buddhist ecology in the field of applied Buddhist studies, but Buddhist ecology in interdisciplinary and fusion studies hs also been paid attention. A full-fledged Buddhist environment, ecology, and life research in Korea started with the foundation of the Eco-Forum. The Eco-Forum was established in October 2004, in diverse disciplines including Buddhism and ecology through an interdisciplinary approach, to focus on ecological and environmental issues with the aim of seeking practical solutions. Some Buddhist writings have been published exclusively for ecological purposes. Among them, The Eco-philosophy of Buddhism (2004) by Jonguk Kim and The Eco-philosophy of Seon (2007) by Jaeyoung Seo have provided the basic theory. Until now, Buddhist eco-apologetics has played a key role in Buddhist ecology. However, it is expected that a practical aim of Buddhist ecology is to get closer to all sentient beings and natural objects. This concept will be researched systematically in the future

    (The) study for physical and mechanical properties of the light curing pit and fissure sealant using trifunctional BPA-3MA matrix

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    ์น˜์˜ํ•™๊ณผ/์„์‚ฌ[ํ•œ๊ธ€] Bis-GMA์— ๋ฉ”ํƒ€ํฌ๋ฆด๋กœ์ผ ํด๋กœ๋ผ์ด๋“œ๋ฅผ ๋ฐ˜์‘์‹œ์ผœ ๋‘ ๊ฐœ์˜ ํ•˜์ด๋“œ๋ก์‹œ๊ธฐ์ค‘ ํ•˜๋‚˜๋ฅผ ๋ฉ”ํƒ€ํฌ๋ฆด๋ ˆ์ดํŠธ๋กœ ์น˜ํ™˜ํ•˜์—ฌ ํ•ฉ์„ฑํ•œ 3๊ด€๋Šฅ์„ฑ BPA-3MA(bisphenol-A trimethacrylate)๋ฅผ ์น˜๊ณผ์šฉ ๋ณตํ•ฉ๋ ˆ์ง„์˜ ๊ธฐ์งˆ๋กœ ์‚ฌ์šฉ ๊ฐ€๋Šฅํ•œ์ง€๋ฅผ ์•Œ์•„๋ณด๊ณ ์ž BPA-3MA์™€ Bis-GMA๋ฅผ ๊ฐ๊ฐ ๊ธฐ์งˆ๋กœ ํ•˜๊ณ  triethylene glycol dimethacrylate(TEGDMA) ํฌ์„์žฌ, camphoroquinone ๊ด‘์ฆ๊ฐ์ œ, ethyldimethylaminobenzoate(EDMAB) ๊ด‘๊ฐœ์‹œ์ œ์™€ silane ์ฒ˜๋ฆฌํ•œ 5 ใŽ› pyrogenie silica ์ถฉ์ „์žฌ๋ฅผ ํ˜ผํ•ฉํ•˜์—ฌ ๊ฐ๊ฐ BPA-3MA ์น˜๋ฉด์—ด๊ตฌ์ „์ƒ‰์žฌ(3MA)์™€ Bis-GMA ์ „์ƒ‰์žฌ(GMA)๋ฅผ ์‹œํ—˜ ์ œ์กฐํ•˜์˜€๋‹ค. ๊ธฐ์กด ์ƒํ’ˆ 1์ข…(CLW, Concise L/C White Sealants, 3M Co., U.S.A.)์„ ์„ ํƒํ•˜์—ฌ ๊ตฝํž˜๊ฐ•๋„์™€ ๊ฐ„์ ‘์ธ์žฅ๊ฐ•๋„, ๋งˆ๋ชจ๋„, ํ‘œ๋ฉด๊ฒฝ๋„, ๋ฌผํก์ˆ˜ ๋ฐ ์šฉํ•ด๋„, ๊ด‘์ค‘ํ•ฉ๋ฅ  ๋“ฑ ๋ฌผ๋ฆฌ์  ๋ฐ ๊ธฐ๊ณ„์  ์„ฑ์งˆ์„ ์กฐ์‚ฌํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๋น„๊ต ์‹œํ—˜ ๊ฒฐ๊ณผ๋ฅผ ์–ป์—ˆ๋‹ค. 1. ๊ตฝํž˜๊ฐ•๋„๋Š” CLW๊ฐ€ ๊ฐ€์žฅ ์šฐ์ˆ˜ํ•˜์˜€์œผ๋‚˜ 3MA์™€๋Š” ์œ ์˜์ฐจ๊ฐ€ ์—†์—ˆ๋‹ค. 2. ๊ฐ„์ ‘์ธ์žฅ๊ฐ•๋„๋Š” 3๊ตฐ ๋ชจ๋‘ ๋น„์Šทํ•˜์˜€๋‹ค(p>0.05). 3. ๋งˆ๋ชจ๋„๋Š” 3MA์™€ GMA๊ฐ€ CLW๋ณด๋‹ค ๋†’์€ ์ €ํ•ญ์„ฑ์„ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค(p 0.05). 4. ๊ฒฝ๋„๋Š” 3MA๊ฐ€ ๊ฐ€์žฅ ๋†’์•˜๋‹ค(p<0.05). 5. ๋ฌผํก์ˆ˜๋Š” 3MA๊ฐ€ ๊ฐ€์žฅ ์ ์—ˆ๋‹ค(p 0.05). 6. ์šฉํ•ด๋„๋Š” 3MA์™€ CLW๊ฐ€ ๋‚ฎ์•˜๋‹ค(p 0.05). 7. ๊ด‘์ค‘ํ•ฉ๋ฅ ์€ GMA์™€ CLW๊ฐ€ 50%์ •๋„๋กœ 3MA๋ณด๋‹ค ๋†’์•˜๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ 3๊ด€๋Šฅ์„ฑ์˜ BPA-3MA๋ฅผ ๊ธฐ์งˆ๋กœ ์‚ฌ์šฉํ•˜์—ฌ ์น˜๋ฉด์—ด๊ตฌ์ „์ƒ‰์žฌ๋ฅผ ๊ฐœ๋ฐœํ•  ๊ฒฝ์šฐ ๊ธฐ์กด์˜ ์ œํ’ˆ๋ณด๋‹ค ์šฐ์ˆ˜ํ•œ ๋ฌผ๋ฆฌ์ , ๊ธฐ๊ณ„์  ์„ฑ์งˆ์„ ๊ฐ–๋Š” ์žฌ๋ฃŒ๊ฐ€ ๋  ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋œ๋‹ค. ๋˜ํ•œ ๋ณด๋‹ค ์šฐ์ˆ˜ํ•œ ๋ฌผ์„ฑ์„ ๊ฐ–๋Š” ๋ณตํ•ฉ๋ ˆ์ง„์˜ ๊ฐœ๋ฐœ๋„ ๊ฐ€๋Šฅํ•  ๊ฒƒ์œผ๋กœ ์‚ฌ๋ฃŒ๋˜์—ˆ๋‹ค. [์˜๋ฌธ] The BPA-3MA(bisphenol-A trimethacrylate) in which one of two hydroxy group were substituted by methacrylate was synthesized by reaction of Bis-GMA with methacryloyl chroride. To investigate the possibility to apply BPA-3MA as matrix of composite resin or pit and fissure sealant, BPA-3MA(3MA) or Bis-GMA(GMA) as matrix, TEGDMA as diluent, CQ as photosensitizer, EDMAB as photoinitiator and 5 ใŽ› pyrogenic silica as filler were used for making experimental sealants. In addition, these experimental sealants were compared to a commercial Concise L/C White sealant(CLW, 3M Co., U.S.A.) for flexural strength, diametral tensile strength, amount of abrasion, surface hardness, water sorption and solubility, and degree of conversion. The results were as follows ; 1. The flexural strength of CLW was the highest value but there was not significant difference with 3MA. 2. In diametral tensile strength, all 3 groups were similar(p O.05). 3. The amounts of abrasion of 3MA and GMA were less than that of CLW (p 0.05). 4. The surface hardness of 3MA was higher than that of GMA(p<0.05) but similar to that of CLW. 5. The water sorption of 3MA was less than that of GMA and CLW(p<0.05). 6. The solubilities of 3MA and CLW were less than that of GMA(p 0.05). 7. GMA and CLW were relatively polymerized well as compared to 3MA. From above results, pit and fissure sealant using trifunctional BPA-3MA as matrix had superior physical and mechanical properties to existing Bis-GMA sealant. Furthermore, it will be possible to develop new composite resin having superior properties to existing composite resin.restrictio

    A Study on dental caries activity of chewing sorbitol and xylitol gums

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    ํ•™์œ„๋…ผ๋ฌธ(๋ฐ•์‚ฌ)--์„œ์šธๅคงๅญธๆ ก ๅคงๅญธ้™ข :้ฝ’้†ซๅญธ็ง‘ ่ฑซ้˜ฒ้ฝ’ๅญธๅฐˆๆ”ป,1995.Docto

    Development of bone composite materials used to bioactive butyl-2-cyanoacrylate as matrix and osteoconductive inorganic ฮฒ-TCP as filler

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    ์˜๊ณผํ•™๊ณผ/๋ฐ•์‚ฌ[ํ•œ๊ธ€]์ƒ๋ถ„ํ•ด์„ฑ ์œ ๊ธฐ๋ฌผ์งˆ์ธ n-butyl-2-cyanoacrylate(BCA)๋ฅผ ์ฃผ์„ฑ๋ถ„์œผ๋กœ ํ•˜๋Š” Histoacryl๏ผŸ(HST)์„ ๊ธฐ์งˆ๋กœ ํ•˜๊ณ , 1% citric acid๋กœ ์‚ฐ์ฒ˜๋ฆฌํ•œ ๊ณจ์ „๋„์„ฑ ๋ฌด๊ธฐ์งˆ์ธ ฮฒ-tricalcium phosphate(TCP)๋ฅผ ๋ถ„์‚ฐ์ƒ์œผ๋กœ ํ•˜๋Š” ๊ณจ ๋Œ€์ฒด์šฉ ๋ณตํ•ฉ์žฌ๋ฃŒ๋ฅผ ์ œ์กฐํ•˜์˜€๋‹ค. In vitro ๊ฒ€์‚ฌ๋กœ ์••์ถ•๊ฐ•๋„์ธก์ • ๋ฐ ์ค‘ํ•ฉ ์‹œ ๋ฐœ์—ด์˜จ๋„ ์ธก์ •, ํก์ˆ˜๋„ ๋ฐ ์šฉํ•ด๋„ ์‹œํ—˜, ํ‘œ๋ฉด ๊ด€์ฐฐ(SEM), XRD ๋ถ„์„์„ ์‹œํ–‰ํ•˜๊ณ , in vivo ์‹œํ—˜์œผ๋กœ ๋งค์‹ ์‹œํ—˜๊ณผ augmentation ์‹œํ—˜ํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ๊ณผ๋ฅผ ์–ป์—ˆ๋‹ค.1. ์‹œํ—˜์žฌ๋ฃŒ์—์„œ HST์˜ ์–‘์ด ๋งŽ์„์ˆ˜๋ก ์••์ถ• ๊ฐ•๋„๋Š” ์ฆ๊ฐ€ํ•˜์˜€๋‹ค.2. ์ค‘ํ•ฉ ๊ณผ์ • ์ค‘ ๋ฐœ์ƒํ•˜๋Š” ์—ด์€ ์ˆœ์ˆ˜ HST์— ๋น„ํ•ด ์‹œํ—˜์žฌ๋ฃŒ์—์„œ ๊ฐ์†Œํ•˜์˜€๋‹ค.3. HST๊ฐ€ ์ ๊ฒŒ ํฌํ•จ๋ ์ˆ˜๋ก, ์ฆ‰ TCP์˜ ์–‘์ด ๋งŽ์•„์งˆ์ˆ˜๋ก ์„ธํฌ๋…์„ฑ์€ ์ ๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค.4. ์‹œํ—˜์žฌ๋ฃŒ์—์„œ ๋ถ„์‚ฐ์ƒ์ธ TCP์˜ ์ฆ๊ฐ€์— ๋”ฐ๋ผ ํก์ˆ˜๋„ ๋ฐ ์šฉํ•ด๋„๋Š” ์ƒ์Šนํ•˜์˜€๋‹ค.5. ์‹œํ—˜์žฌ๋ฃŒ๋ฅผ ์œ ์‚ฌ์ฒด์•ก์— 12์ฃผ๊ฐ„ ์นจ์  ํ›„ SEM ๊ด€์ฐฐ์‹œ ํ‘œ๋ฉด์ด ๊ฑฐ์น ์–ด์ง„ ๊ฒƒ์„ ๊ด€์ฐฐํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค.6. ์‹œํ—˜์žฌ๋ฃŒ๋ฅผ ์œ ์‚ฌ์ฒด์•ก์— 12์ฃผ๊ฐ„ ์นจ์  ์‹œ ํ‘œ๋ฉด์˜ ์„์ถœ๋ฌผ์€ XRD ๊ฒ€์‚ฌ๊ฒฐ๊ณผ hydroxyapatite์ด์—ˆ์Œ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค.7. ์‹œํ—˜ ๋™๋ฌผ์˜ ์ž„๊ณ„ ํฌ๊ธฐ ์ด์ƒ์˜ ๋‘๊ฐœ๊ณจ ๊ฒฐ์†๋ถ€(์ง๊ฒฝ 8ใŽœ)์— ์‹œํ—˜์žฌ๋ฃŒ๋ฅผ ๋งค์‹ํ•˜์˜€์„ ๋•Œ, ์†์ƒ ๋ถ€์œ„์™€ ๋งค์‹ ์žฌ๋ฃŒ ์‚ฌ์ด์— ์‹ ์ƒ๊ณจ์ด ํ˜•์„ฑ๋˜์—ˆ๋‹ค.8. ์‹œํ—˜ ๋™๋ฌผ์˜ ๋‘๊ฐœ๊ณจ์— ์‹œํ—˜์žฌ๋ฃŒ๋ฅผ ์ ‘์ด‰ํ•˜์—ฌ ๋งŒ๋“  ๋ฐ˜์›ํ˜• ๋ฌผ์ฒด๋Š” ์œ„์น˜๋‚˜ ํ˜•ํƒœ๊ฐ€ ๋ณ€ํ•˜์ง€ ์•Š์•˜๋‹ค. ๋˜ํ•œ ์กฐ์งํ•™์  ์†Œ๊ฒฌ์œผ๋กœ๋Š” ์žฌ๋ฃŒ์™€ ๊ณจ ์‚ฌ์ด๋กœ, ์žฌ๋ฃŒ์˜ ๋๋ถ€๋ถ„์— ์‹ ์ƒ๊ณจ์ด ํ˜•์„ฑ๋˜์—ˆ์Œ์„ ๋ณผ ์ˆ˜ ์žˆ์—ˆ๋‹ค.์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ, ์ƒ๋ถ„ํ•ด์„ฑ ์œ ๊ธฐ์งˆ n-butyl-2-cyanoacrylate๋ฅผ ๊ธฐ์งˆ๋กœ ํ•˜๊ณ , ๊ณจ์ „๋„์„ฑ ๋ฌด๊ธฐ์งˆ์ธ ฮฒ-tricalcium phosphate๋ฅผ ๋ถ„์‚ฐ์ƒ์œผ๋กœ ํ•˜๋Š” ๊ณจ ๋Œ€์ฒด์šฉ ๋ณตํ•ฉ์žฌ๋ฃŒ์˜ ํ•ฉ์„ฑ์ด ๊ฐ€๋Šฅํ•˜๋ฆฌ๋ผ ํŒ๋‹จ๋œ๋‹ค. [์˜๋ฌธ]The bone composite materials prepared with a bioactive n-butyl-2- cyanoacrylate(BCA) as a matrix and 1% citric acid-treated ฮฒ-tricalcium phosphate(ฮฒ-TCP) as an osteoconductive inorganic filler. To investigate the possibility to apply the prepared bone composite materials to bone defects as the filler, several tests for basic materials properties and in vivo test were studied.The results were as follows;1. The compressive strength increased as the amount of BCA increased.2. The thermal change during the pure BCA polymerization was lower thanthat during the composite polymerization.3. As the amount of TCP increased, cytotoxicity of the bone composite materials decreased.4. The water sorption and the solubility increased as the amount of ฮฒ-TCP in bone composite materials increased.5. The surface of composite materials got roughened 12 weeks after the immersion in SBF.6. As a result of XRD analysis, the spherical particles generated on the surface of bone composite materials 12 weeks after the immersion in SBF were HA.7. Bone was regenerated at critical-sized defect site in the rat calvaria when bone composite materials were implanted at defect area.8. In the augmentation experiment, the augmented area maintaining the hemispherical shape was connected tightly with the host bone. Histology demonstrated that new bone formation was observed in the gap and on the outer surface of bone composite materials.From above results, it will be possible to develop new bone composite materials prepared with bioactive BCA as a matrix and osteoconductive inorganic ฮฒ-TCP as a filler.ope

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    Deadline-Aware Routing: Quality of Service Enhancement in Cyber-Physical Systems

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    ์‹ค์‹œ๊ฐ„ ์‹œ์Šคํ…œ, ๋„คํŠธ์›Œํฌ ์ œ์–ด ์‹œ์Šคํ…œ, ์‚ฌ์ด๋ฒ„๋ฌผ๋ฆฌ์‹œ์Šคํ…œ๊ณผ ๊ฐ™์ด ์ง€์—ฐ์— ๋ฏผ๊ฐํ•œ ์‹œ์Šคํ…œ์˜ ์„œ๋น„์Šค ํ’ˆ์งˆ์„ ์œ„ํ•ด ์ข…๋‹จ ๊ฐ„ ์ง€์—ฐ ๋ฐ๋“œ๋ผ์ธ์„ ๋ณด์žฅํ•˜๋Š” ๊ฒƒ์€ ์ค‘์š”ํ•˜๋‹ค. ๋Œ€๋ถ€๋ถ„์˜ ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ์ผ๋ฐ˜์ ์œผ๋กœ ์ข…๋‹จ ๊ฐ„ ํ‰๊ท  ์ง€์—ฐ์„ ์„ฑ๋Šฅ ๋ฉ”ํŠธ๋ฆญ์œผ๋กœ ์‚ฌ์šฉํ•˜๊ณ  ํ‰๊ท  ์„ฑ๋Šฅ ํ–ฅ์ƒ์„ ์œ„ํ•ด ์ด๋ฅผ ์ตœ์†Œํ™”ํ•˜๋Š” ๋ผ์šฐํŒ… ๊ฒฝ๋กœ๋ฅผ ์„ ํƒํ•œ๋‹ค. ํ•˜์ง€๋งŒ ์ตœ์†Œ ํ‰๊ท  ์ง€์—ฐ์€ ํ‰๊ท ๊ฐ’๋งŒ์„ ๋‚˜ํƒ€๋‚ด๊ธฐ ๋•Œ๋ฌธ์— ์˜ˆ์ธกํ•  ์ˆ˜ ์—†๋Š” ๋ฌด์„  ์ฑ„๋„์˜ ํŠน์„ฑ์„ ๋ฐ˜์˜ํ•˜๊ธฐ์— ๋ถˆ์ถฉ๋ถ„ํ•œ ๋ผ์šฐํŒ… ๋ฉ”ํŠธ๋ฆญ์ด๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ํ‰๊ท  ์ง€์—ฐ๋ณด๋‹ค๋Š” ํ‰๊ท  ๋ถ„ํฌ๋ฅผ ๊ณ ๋ คํ•˜์—ฌ ์‚ฌ์ด๋ฒ„๋ฌผ๋ฆฌ์‹œ์Šคํ…œ์˜ ์ฃผ์–ด์ง„ ๋ฐ๋“œ๋ผ์ธ ๋‚ด์— ํŒจํ‚ท์ด ๋„์ฐฉํ•  ํ™•๋ฅ ์„ ์ตœ๋Œ€ํ™”ํ•˜๋Š” ๋ฐ๋“œ๋ผ์ธ ์ธ์ง€ ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์ œ์•ˆํ•œ๋‹ค. ์ œ์•ˆํ•œ ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ๋‹จ์ผ ํ™‰ ์ง€์—ฐ์ด ์ง€์ˆ˜ ๋ถ„ํฌ๋ฅผ ๋”ฐ๋ฅธ๋‹ค๋Š” ๊ฐ€์ • ํ•˜์— ์ฃผ์–ด์ง„ ๋„คํŠธ์›Œํฌ ํ† ํด๋กœ์ง€์—์„œ ์ข…๋‹จ ๊ฐ„ ์ง€์—ฐ ๋ถ„ํฌ๋ฅผ ๊ตฌ์„ฑํ•œ๋‹ค. ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๊ฒฐ๊ณผ๋Š” ์ œ์•ˆํ•œ ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜์ด ๋ฐ๋“œ๋ผ์ธ์„ ๋งŒ์กฑํ•  ํ™•๋ฅ ์„ ์ตœ๋Œ€ํ™” ํ•˜๋Š” ๋ผ์šฐํŒ… ๊ฒฝ๋กœ๋ฅผ ์ œ๊ณตํ•˜์—ฌ ์‚ฌ์ด๋ฒ„๋ฌผ๋ฆฌ์‹œ์Šคํ…œ์˜ ์„œ๋น„์Šค ํ’ˆ์งˆ๊ณผ ๋„คํŠธ์›Œํฌ ์ œ์–ด ์„ฑ๋Šฅ์„ ํ–ฅ์ƒ์‹œํ‚ฌ ์ˆ˜ ์žˆ์Œ์„ ๋ณด์—ฌ์ค€๋‹ค.2

    A Routing Protocol for Wireless SDN in Mission-Critical Unmanned Systems

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    ์ „์žฅ๊ณผ ๊ฐ™์€ ๋ฏธ์…˜ ํฌ๋ฆฌํ‹ฐ์ปฌ ํ™˜๊ฒฝ์—์„œ ๋„คํŠธ์›Œํฌ์˜ ํŒจํ‚ท์†์‹ค์€ ์น˜๋ช…์ ์ธ ๊ฒฐ๊ณผ๋ฅผ ์ดˆ๋ž˜ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด์— ๋”ฐ๋ผ ๋ฏธ์…˜ํฌ๋ฆฌํ‹ฐ์ปฌ ์‹œ์Šคํ…œ์˜ ๊ฒฝ์šฐ๋ณด๋‹ค ์œ ์—ฐํ•˜๊ณ  ๊ฐ•์ธํ•œ ๋„คํŠธ์›Œํฌ ์„ค๊ณ„๊ฐ€ ํ•„์š”ํ•˜๋‹ค. ์ด๋ฅผ ์œ„ํ•œ ๊ธฐ์ˆ ๋กœ๋Š” ์†Œํ”„ํŠธ์›จ์–ด ์ •์˜๋„คํŠธ์›Œํ‚น(Software Defined Networking, SDN)์„ ๋“ค ์ˆ˜ ์žˆ๋‹ค. ํ•˜์ง€๋งŒ, ์ง€๊ธˆ๊นŒ์ง€ ๋Œ€๋ถ€๋ถ„์˜ ๋ฌด์„  SDN ์—ฐ๊ตฌ์—์„œ๋Š”SDN ์ปจํŠธ๋กค๋Ÿฌ์™€ ๋…ธ๋“œ ๊ฐ„ ๋‹จ์ผ ํ™‰ ํ†ต์‹ ์„ ๊ฐ€์ •ํ•˜๋ฉฐ ์ด๋Š” ๋…ธ๋“œ ์ด๋™์„ฑ์„ ์ œํ•œํ•˜๋Š” ์š”์†Œ๊ฐ€ ๋œ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š”SDN ์ปจํŠธ๋กค๋Ÿฌ์™€ ๋…ธ๋“œ ๊ฐ„ ๋ฉ€ํ‹ฐ ํ™‰ ์ƒํ™ฉ์—์„œ ๋งํฌ ๋‹จ์ ˆ ์‹œ๋‚˜๋ฆฌ์˜ค๋ฅผ ๊ณ ๋ คํ•œ ๋ผ์šฐํŒ… ํ”„๋กœํ† ์ฝœ์„ ์ œ์•ˆํ•œ๋‹ค. ์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ํ†ตํ•ด ์ œ์•ˆํ•˜๋Š” ๋ผ์šฐํŒ… ๊ธฐ๋ฒ•์ด ํŒจํ‚ท ์ „๋‹ฌ๋ฅ ์„ ๊ฐœ์„ ํ•จ์„ ํ™•์ธํ•˜์˜€๋‹ค. Under mission-critical scenarios such as a battlefield, network packet loss can result in a fatal consequence. Therefore, flexible and robust network design is crucial in mission-critical networks. Wireless software-defined networking (SDN) is a promising technology for this purpose. However, in most studies on wireless SDN, the communication between the SDN controller and mobile nodes is restricted to one hop, which significantly limits the mobility of the wireless nodes. In this paper, we propose a routing protocol that can effectively react to disconnection in multi-hop wireless SDN scenarios. By numerical simulation, we confirm that the proposed protocol can meaningfully increase the packet delivery ratio.FALS
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