20 research outputs found

    ํ•ญ์•” ์น˜๋ฃŒ๋ฅผ ์œ„ํ•œ Glycyl-tRNA synthetase ์œ ๋ž˜ Peptide ๊ฐœ๋ฐœ

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    ํ•™์œ„๋…ผ๋ฌธ (์„์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ์œตํ•ฉ๊ณผํ•™๊ธฐ์ˆ ๋Œ€ํ•™์› ๋ถ„์ž์˜ํ•™ ๋ฐ ๋ฐ”์ด์˜ค์ œ์•ฝํ•™๊ณผ, 2017. 8. ๊น€์„ฑํ›ˆ.Peptide therapeutics is a newly emerging field in cancer therapy. They can be rapidly synthesized and easily modified to fit the drug delivery system needs. Peptides have low toxicity and minimal side effects compared to chemical drugs, which are critical for therapeutic drug development. Glycyl-tRNA synthetase (GRS), a known component of translation, has been previously reported to kill cancer expressing cadherin-6 (CDH-6), also known as K-cadherin, by suppressing ERK signaling and inducing apoptosis. In this study, we analyzed the structure of GRS to determine the active region that binds to CDH6 and critical for cancer cell viability. Only fragment 4 (F4) domain of GRS, 511 to 685 residues, showed binding to CDH6 and induced apoptosis in CDH6-positive cells. Next, we used a protein-protein docking program, HADDOCK (High Ambiguity Driven protein-protein DOCKing), to predict the binding region of F4 to CDH6. Upon this analysis, we predicted single point mutants around N-terminal of F4 would perturb the interface binding. It was shown mutants that lost binding with CDH6 had a decrease in anti-cancer activity against CDH6-positive cancer cells. Double mutants were performed to identify that the region harboring the F535E residue was critical by showing a severe decrease in binding. After confirming the binding domain for GRS and CDH6, a peptide was developed based on these results and analyzed. The peptide showed CDH6 binding and dependent activity in dose-dependent manner through dephosphorylation of ERK signal. Xenograft mouse model showed that peptide suppressed tumor growth only in CDH6-expressing cell line. Our results lead to the discovery of binding site between GRS with CDH6 and the use of GRS peptide for therapeutic drug development against cancer.Introduction 1 Material and methods 4 Results 9 Discussion 27 References 30 ๊ตญ๋ฌธ์ดˆ๋ก 34Maste

    ์—ฐ๋ น์„ ์กฐ์ ˆํšจ๊ณผ๋กœ ๋ถ„์„

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) -- ์„œ์šธ๋Œ€ํ•™๊ต๋Œ€ํ•™์› : ํ–‰์ •๋Œ€ํ•™์› ๊ณต๊ธฐ์—…์ •์ฑ…ํ•™๊ณผ, 2022. 8. ๋‚˜์ข…๋ฏผ.์šฐ๋ฆฌ๋‚˜๋ผ๋Š” ๊ณ ๋ นํ™” ์‚ฌํšŒ๋ฅผ ์ง€๋‚˜ ์ด๋ฏธ ๊ณ ๋ น์‚ฌํšŒ์— ์ ‘์–ด๋“ค์—ˆ๊ณ  ํ‰๊ท  ์ˆ˜๋ช…์˜ ์—ฐ์žฅ์œผ๋กœ ๊ณ ๋ น์ž์˜ ๊ฒฝ์ œํ™œ๋™ ์ธ๊ตฌ ๋˜ํ•œ ์ฆ๊ฐ€ํ•˜๊ณ  ์žˆ๋‹ค. ์‚ฐ์—…์žฌํ•ด ์š”์–‘ํ™˜์ž ์ค‘ 60์„ธ ์ด์ƒ ๊ณ ๋ น์ž์˜ ๋น„์ค‘๋„ ๊ณ„์† ๋Š˜์–ด๊ฐ€๋Š” ์ถ”์„ธ์ด๋‹ค. ์ €์ถœ์‚ฐ ๊ณ ๋ น์‚ฌํšŒ์— ๋Œ€ํ•œ ๊ฒฝ๊ณ ์™€ ๋‹ค์–‘ํ•œ ์ •์ฑ…์ด ์ œ์‹œ๋˜๊ณ  ์žˆ๋Š” ํ˜„์‹ค์ด์ง€๋งŒ ์‚ฐ์—…์žฌํ•ด ๊ทผ๋กœ์ž ์ค‘ 60์„ธ ์ด์ƒ์˜ ๊ณ ๋ น์ž์— ๋Œ€ํ•œ ์—ฐ๊ตฌ์™€ ์ •์ฑ…์€ ๋ฏธ๋ฏธํ•œ ๊ฒƒ์œผ๋กœ ๋ณด์ธ๋‹ค. ๋ณธ ์—ฐ๊ตฌ๋Š” ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ์€ ์–ด๋– ํ•œ๊ฐ€? ๋ผ๋Š” ์˜๋ฌธ์ ์—์„œ ์‹œ์ž‘ํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์€ ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ ์ˆ˜์ค€์„ ํŒŒ์•…ํ•˜๊ณ , ์‚ถ์˜ ์งˆ์— ๋ฏธ์น˜๋Š” ์š”์ธ์ด ๋ฌด์—‡์ธ์ง€ ํ™•์ธํ•˜๋ฉฐ, ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ๋งŒ์กฑ๋„ ํ–ฅ์ƒ์„ ์œ„ํ•ด์„œ ์–ด๋– ํ•œ ์ •์ฑ…์ด ํ•„์š”ํ•œ๊ฐ€๋ฅผ ์ œ์–ธํ•˜๊ณ ์ž ํ•จ์ด๋‹ค. ์ด๋Ÿฌํ•œ ์—ฐ๊ตฌ๋ชฉ์ ์„ ๋‹ฌ์„ฑํ•˜๊ธฐ ์œ„ํ•ด 2017๋…„ ์‚ฐ์žฌ์š”์–‘์ข…๊ฒฐ์ž ์ค‘ 3,294๋ช…์„ ๋Œ€์ƒ์œผ๋กœ ํ•œ ๊ทผ๋กœ๋ณต์ง€๊ณต๋‹จ ์‚ฐ์žฌ๋ณดํ—˜ ํŒจ๋„ 2์ฐจ ์ฝ”ํ˜ธํŠธ์กฐ์‚ฌ 1์ฐจ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ถ„์„ํ•˜์˜€๋‹ค. ์„ ํ–‰์—ฐ๊ตฌ ๊ฒ€ํ†  ๊ฒฐ๊ณผ ๋…๋ฆฝ๋ณ€์ˆ˜๋Š” ์‚ฐ์—…์žฌํ•ด ์š”์ธ(์žฌํ•ด์œ ํ˜•, ์žฅํ•ด๋“ฑ๊ธ‰, ์žฌํ™œ์„œ๋น„์Šค ์ด์šฉ์—ฌ๋ถ€), ๊ฒฝ์ œ์  ์š”์ธ(์ทจ์—…์—ฌ๋ถ€, ๊ฐ€๊ตฌ์†Œ๋“), ์‹ฌ๋ฆฌยท์‚ฌํšŒ์  ์š”์ธ(์ž์•„์กด์ค‘๊ฐ, ์ž๊ธฐํšจ๋Šฅ๊ฐ, ๊ต๋ฅ˜๋ณ€ํ™”)์œผ๋กœ ์„ค์ •ํ•˜๊ณ , ์ข…์†๋ณ€์ˆ˜๋Š” ์‚ฐ์žฌ๋ณดํ—˜ ํŒจ๋„๋ฐ์ดํ„ฐ์—์„œ โ€˜์ผ์ƒ์ƒํ™œ๋งŒ์กฑ๋„โ€™ 6๋ฌธํ•ญ์„ ์ฝ”๋”ฉ ๋ณ€๊ฒฝํ•˜์—ฌ ์‚ฌ์šฉํ•˜์˜€๋‹ค. ๋…๋ฆฝ๋ณ€์ˆ˜๊ฐ€ ์ข…์†๋ณ€์ˆ˜์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ๋ ฅ์„ ๋ณด๋‹ค ๋ช…ํ™•ํ•˜๊ฒŒ ๊ทœ๋ช…ํ•˜๊ธฐ ์œ„ํ•ด ์ธ๊ตฌ์‚ฌํšŒํ•™์  ์š”์ธ(์„ฑ๋ณ„, ๋ฐฐ์šฐ์ž์œ ๋ฌด, ๊ต์œก์ˆ˜์ค€)์„ ํ†ต์ œ๋ณ€์ˆ˜๋กœ ๋‘์—ˆ๋‹ค. 60์„ธ๋ฅผ ๊ธฐ์ค€์œผ๋กœ ๊ณ ๋ น์ž์™€ ๋น„๊ณ ๋ น์ž๋ฅผ ๋‚˜๋ˆ„์–ด ์‚ถ์˜ ์งˆ์— ๋ฏธ์น˜๋Š” ์š”์ธ์„ ๋ถ„์„ํ•˜๊ณ , ์—ฐ๋ น(30๋Œ€์ดํ•˜, 40๋Œ€, 50๋Œ€, 60๋Œ€์ด์ƒ)์˜ ์กฐ์ ˆํšจ๊ณผ ๊ฒ€์ฆ์„ ์œ„ํ•˜์—ฌ ์œ„๊ณ„์ ํšŒ๊ท€๋ถ„์„์„ ์‹ค์‹œํ•˜์˜€๋‹ค. ์—ฐ๊ตฌ์˜ ์ฃผ์š” ๊ฒฐ๊ณผ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค. ์ฒซ์งธ, ์‚ฐ์žฌ๊ทผ๋กœ์ž ์‚ถ์˜ ์งˆ ์ˆ˜์ค€์€ 5์  ์ฒ™๋„์— ํ‰๊ท  3.20์ ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋‘˜์งธ, ๊ฒฝ์ œ์  ์š”์ธ๊ณผ ์‹ฌ๋ฆฌยท์‚ฌํšŒ์  ์š”์ธ์ด ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ์— ์œ ์˜๋ฏธํ•œ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ์‚ฐ์—…์žฌํ•ด ์š”์ธ์€ ์œ ์˜๋ฏธํ•œ ์˜ํ–ฅ์ด ์—†๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์…‹์งธ, ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ์— ์œ ์˜๋ฏธํ•œ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์ธ์œผ๋กœ ์ž์•„์กด์ค‘๊ฐ, ๊ต๋ฅ˜๋ณ€ํ™”, ๋ฐฐ์šฐ์ž ์œ ๋ฌด, ์ž๊ธฐํšจ๋Šฅ๊ฐ, ์ทจ์—…์—ฌ๋ถ€, ๊ฐ€๊ตฌ์†Œ๋“ ์ˆœ์œผ๋กœ ์œ ์˜๋ฏธํ•œ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ๋น„๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์—๊ฒŒ ์œ ์˜๋ฏธํ•œ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์ธ์ธ ๊ต์œก์ˆ˜์ค€๊ณผ ์„ฑ๋ณ„์€ ์œ ์˜๋ฏธํ•˜์ง€ ์•Š์•˜๋‹ค. ๋„ท์งธ, ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ๋งŒ์กฑ๋„์— ๋Œ€ํ•œ ์—ฐ๋ น์˜ ์กฐ์ ˆํšจ๊ณผ๋ฅผ ๊ฒ€ํ† ํ•œ ๊ฒฐ๊ณผ, ์‹ฌ๋ฆฌยท์‚ฌํšŒ์  ์š”์ธ ์ค‘ ๊ต๋ฅ˜๋ณ€ํ™”์˜ ๊ฒฝ์šฐ ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜๋ฏธํ•œ ๊ฒฐ๊ณผ๋ฅผ ํ™•์ธํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ๋ถ„์„๊ฒฐ๊ณผ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ, ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์— ์ดˆ์ ์„ ๋งž์ถ˜ ๋งž์ถคํ˜• ํ†ตํ•ฉ์„œ๋น„์Šค ์ œ๊ณต์˜ ํ•„์š”์„ฑ๊ณผ ์‚ฐ์—…์žฌํ•ด๋ณด์ƒ๋ณดํ—˜ ๊ณ ๋ น์ž ํœด์—…๊ธ‰์—ฌ ๊ฐ์•ก์ง€๊ธ‰ ์ œ๋„๋ฅผ ๊ฐœ์„ ํ•˜๋„๋ก ์ œ์–ธํ•˜์˜€๋‹ค. ๋˜ํ•œ, ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž๋ฅผ ์œ„ํ•œ ์‚ฌํšŒ์‹ฌ๋ฆฌ์žฌํ™œํ”„๋กœ๊ทธ๋žจ ๊ฐœ๋ฐœ๊ณผ ์‚ฌํšŒ์  ๊ด€๊ณ„ ํ™œ์„ฑํ™”๋ฅผ ์œ„ํ•œ ํ†ตํ•ฉ์  ์ ‘๊ทผ์„ ์ œ์‹œํ•˜์˜€์œผ๋ฉฐ, ์š”์–‘์ดˆ๊ธฐ ๊ฐ„๋ณ‘๋น„ ์ง€๊ธ‰ ์š”๊ฑด์„ ์™„ํ™”ํ•˜๊ณ  ๊ฐ€์กฑ์ง€์› ํ”„๋กœ๊ทธ๋žจ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ ๊ด€๋ จ ๋ฒ•๊ทœ ์ •๋น„๋ฅผ ์ œ์–ธํ•˜์˜€๋‹ค.Korea has already entered an aged society after passing an aging society, and the economically activity population of the elderly is also increasing due to the extension of average life expectancy. The proportion of the elderly aged 60 or over among industrially-injured workers(IIWs) is also on the rise. Although warnings about the low birth rate and aging society are being presented and various policies are being presented, it seems that there are few studies and policies on the elderly aged 60 or older among industrially-injured workers(IIWs). What is the quality of life of elderly IIWs? It started with a question. The purpose of this study is to identify the level of quality of life of elderly IIWs, determine what factors affect the quality of life, and suggest what policies are needed to improve the quality of life of elderly IIWs. To achieve this study purpose, the primary data of the 2nd cohort survey of Panel Study of Workersโ€™ Compensation Insurance(PSWCI) targeting 3,294 people who completed industrial accident care in 2017 were used for analysis. As a result of the review of previous studies, independent variables were set as industrial accident factors (disaster type, disability grade, use of rehabilitation services), economic factors (employment status, household income), and psychosocial factors (self-esteem, self-efficacy, social relationship exchange), and the dependent variable was used by changing the coding of 6 items of 'Daily Life Satisfaction' in the panel data of PSWCI. In order to more clearly identify the influence of the independent variable on the dependent variable, sociodemographic factors (gender, marital status, education level) were set as control variables. The factors affecting the quality of life were analyzed by dividing the elderly and non-aged people based on the age of 60, and hierarchical regression analysis was performed to verify the moderating effect of age (under 30s, 40s, 50s, 60s or more). The main findings of the study are as follows. First, the quality of life of IIWs was found to be an average of 3.20 on a 5-point scale. Second, economic factors and psychosocial factors were found to have a significant effect on the quality of life of IIWs, and it was found that industrial accident factors had no significant effect. Third, as factors that have a significant effect on the quality of life of elderly IIWs, it was found that they had a significant effect in the order of self-esteem, social relationship exchange, presence of a spouse, sense of self-efficacy, employment status, and household income. Education level and gender, which were influencing factors, were not significant. Fourth, as a result of examining the moderating effect of age on life satisfaction of IIWs, statistically significant results were confirmed in the case of social relationship exchange among psychosocial factors. Based on the results of this analysis, this study suggested the necessity of providing customized integrated services focusing on elderly IIWs and reforming the WCI(Workersโ€™s Compensation Insurance) system for reducing the TDBs (Temporary Disability Benefits) for old workers. In addition, an integrated approach was proposed for the development of social psychological rehabilitation programs for the elderly IIWs and revitalization of social relationships, and the revision of related laws and regulations for the development of family support programs and relaxation of the requirements for payment of nursing.์ œ 1 ์žฅ ์„œ๋ก  1 ์ œ 1 ์ ˆ ์—ฐ๊ตฌ์˜ ๋ชฉ์ ๊ณผ ํ•„์š”์„ฑ 1 ์ œ 2 ์žฅ ์ด๋ก ์  ๋ฐฐ๊ฒฝ๊ณผ ์„ ํ–‰์—ฐ๊ตฌ ๊ฒ€ํ†  5 ์ œ 1 ์ ˆ ์ด๋ก ์  ๋ฐฐ๊ฒฝ 5 1. ์‚ถ์˜ ์งˆ 5 2. ๊ณ ๋ น์ž์˜ ์‚ถ์˜ ์งˆ 9 3. ์‚ฐ์—…์žฌํ•ด๋ณด์ƒ๋ณดํ—˜ ์ œ๋„ 12 ์ œ 2 ์ ˆ ์„ ํ–‰์—ฐ๊ตฌ ๊ฒ€ํ†  20 1. ๊ณ ๋ น์ž ์‚ถ์˜ ์งˆ ๊ด€๋ จ ์—ฐ๊ตฌ 20 2. ์‚ฐ์žฌ๊ทผ๋กœ์ž ์‚ถ์˜ ์งˆ ๊ด€๋ จ ์—ฐ๊ตฌ 25 3. ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž 31 ์ œ 3 ์ ˆ ์„ ํ–‰์—ฐ๊ตฌ ๊ฒ€ํ†  ๊ฒฐ๊ณผ 33 ์ œ 3 ์žฅ ์—ฐ๊ตฌ์„ค๊ณ„ 34 ์ œ 1 ์ ˆ ์—ฐ๊ตฌ๋Œ€์ƒ 34 1. ๊ณ ๋ น ๊ทผ๋กœ์ž์— ๋Œ€ํ•œ ์ •์˜ 34 2. ๋ถ„์„์ž๋ฃŒ ๋ฐ ๋ถ„์„๋Œ€์ƒ 34 ์ œ 2 ์ ˆ ์—ฐ๊ตฌ๋ชจํ˜• ๋ฐ ๊ฐ€์„ค ์„ค์ • 36 1. ์—ฐ๊ตฌ๋ชจํ˜• 36 2. ๊ฐ€์„ค์˜ ์„ค์ • 37 ์ œ 3 ์ ˆ ์—ฐ๊ตฌ๋ฐฉ๋ฒ•๊ณผ ๋ณ€์ˆ˜์˜ ์ •์˜ 38 1. ์—ฐ๊ตฌ๋ฐฉ๋ฒ• 38 2. ๋ณ€์ˆ˜์˜ ์ •์˜ 39 ์ œ 4 ์žฅ ๋ถ„์„๊ฒฐ๊ณผ 42 ์ œ 1 ์ ˆ ๊ธฐ์ˆ ํ†ต๊ณ„ ๋ถ„์„ 42 1. ์—ฐ๊ตฌ๋Œ€์ƒ์ž์˜ ์ผ๋ฐ˜์  ํŠน์„ฑ 42 2. ์ฃผ์š”๋ณ€์ˆ˜๋“ค์˜ ๊ธฐ์ˆ ํ†ต๊ณ„ 44 ์ œ 2 ์ ˆ ์ธก์ • ๋„๊ตฌ์˜ ์‹ ๋ขฐ๋„ ๋ถ„์„ 48 ์ œ 3 ์ ˆ ๋ณ€์ˆ˜๊ฐ„ ์ƒ๊ด€๊ด€๊ณ„ 49 ์ œ 4 ์ ˆ ๊ฐ€์„ค์˜ ๊ฒ€์ฆ ๋ฐ ์—ฐ๊ตฌ๊ฒฐ๊ณผ ๋ถ„์„ 53 1. ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์ธ 53 2. ๊ณ ๋ น ์‚ฐ์žฌ๊ทผ๋กœ์ž์˜ ์‚ถ์˜ ์งˆ์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์ธ 56 3. ์‚ฐ์žฌ๊ทผ๋กœ์ž ์‚ถ์˜ ์งˆ๊ณผ ์—ฐ๋ น์˜ ์กฐ์ ˆํšจ๊ณผ ๊ฒ€์ฆ 60 ์ œ 5 ์žฅ ๊ฒฐ๋ก  67 ์ œ 1 ์ ˆ ์—ฐ๊ตฌ๊ฒฐ๊ณผ ์š”์•ฝ 67 ์ œ 2 ์ ˆ ์ •์ฑ… ์ œ์–ธ 70 ์ œ 3 ์ ˆ ์—ฐ๊ตฌ์˜ ์˜์˜์™€ ํ•œ๊ณ„ 72 ์ฐธ๊ณ ๋ฌธํ—Œ 74 Abstract 81์„

    ์ดˆ์ž„๊ณ„ ๋ฉ”ํƒ„์˜ฌ์„ ์ด์šฉํ•œ ๋‹ค์–‘ํ•œ ์‹๋ฌผ์„ฑ ๊ธฐ๋ฆ„์œผ๋กœ๋ถ€ํ„ฐ์˜ ๋ฐ”์ด์˜ค๋””์ ค ํ•ฉ์„ฑ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) --์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :ํ™”ํ•™์ƒ๋ฌผ๊ณตํ•™๋ถ€,2008.2.Maste

    Edgar Allan Poe์˜ ์†Œ์„ค ์—ฐ๊ตฌ :

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์˜์–ด์˜๋ฌธํ•™๊ณผ ๋ฌธํ•™์ „๊ณต,2000.Maste

    ๊ฑฐ์ƒ๋œ ์ƒ์•…๋™ ๋ถ€์œ„์— ์œ„์น˜ํ•œ ์ž„ํ”Œ๋ž€ํŠธ์˜ ๋ณ€์—ฐ๊ณจ ์†Œ์‹ค์— ๊ณ ์ •์ฒด ํ‘œ๋ฉด๊ณผ ์ ‘์ด‰ํ•œ ์ž”์กด ์น˜์กฐ๊ณจ๊ณผ ์ด์‹์žฌ์˜ ๋น„์œจ์ด ๋ฏธ์น˜๋Š” ์˜ํ–ฅ: 1 ๋…„๊ฐ„ ํ›„ํ–ฅ์  ์—ฐ๊ตฌ

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    The purpose of this retrospective study was to evaluate the influences of height or area ratio of residual alveolar bone to graft material on marginal bone loss around implants in the augmented maxillary sinuses with delayed implant placement. In this study, 42 patients with Astra implants in sinuses that had been augmented with alloplasts and allografts or xenografts (alveolar bone height โ‰ค 5 mm) were selected. Marginal bone level surrounding 1 implant per sinus was assessed by radiographic imaging at the time of final restoration delivery and 12 months after functional loading. To evaluate the marginal bone level alterations using clinical and radiographic data, Pearsonโ€™s correlation analysis and Mann-Whitney test were performed. Forty-six implants were included in this study. The residual bone/implant length ratio and the residual bone/implant area ratio were not associated with marginal bone loss at 1 year after functional loading (P > .05). And, marginal bone loss did not differ significantly between 2 types of graft materials during the observation period (P > .05). The residual bone/implant length ratio and residual bone/implant area ratio were not associated with marginal bone loss around implants placed in augmented sinuses during 1 year of functional loading.open๋ฐ•

    ๋ฒผ์˜ class III chitinase์˜ ํŠน์„ฑ๊ทœ๋ช…

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    Thesis (master`s)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :๋†์ƒ๋ช…๊ณตํ•™๋ถ€ [์‹๋ฌผ๋ณ‘๋ฆฌํ•™์ „๊ณต],2001.Maste

    Interpretation of โ€œRocksโ€ in Article 121(3) of the UN Convention on the Law of the Sea

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    ๋‹ค์ค‘ ์‚ฌ์šฉ์ž ์ ‘์† ํ™˜๊ฒฝ์˜ ๋ถ€ํ˜ธ ์ •๋ ฌ ํ”„๋ฆฌ์ฝ”๋”ฉ ๋ฐ ๋ฒ ์ด์‹œ์•ˆ ์ง‘์„ฑ ์—ฐํ•ฉ ํ•™์Šต

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    MasterThis thesis considers the problem of wireless federated learning based on sign stochastic gradient descent (signSGD) algorithm via a multiple access channel. When sending locally computed gradient's sign information, each mobile device requires to apply precoding to circumvent wireless fading effects. In practice, however, acquiring perfect knowledge of channel state information (CSI) at all mobile devices is infeasible. This thesis presents a simple yet effective precoding method with limited channel knowledge, called sign-alignment precoding. The idea of sign-alignment precoding is to protect sign-flipping errors from wireless fadings. Under the Gaussian prior assumption on the local gradients, I also derives the mean squared error (MSE)-optimal aggregation function called Bayesian over-the-air computation (BayAirComp). The key finding of the thesis is that one-bit precoding with BayAirComp aggregation can provide a better learning performance than the existing precoding method even using perfect CSI with AirComp aggregation
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