24 research outputs found

    Total Uncinatectomy Revisited: Revision Surgery for Persistent Radiculopathy Following Anterior Cevical Discectomy and Fusion(ACDF)

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.We report on a case involving total en bloc uncinatectomy of C7 without removal of the previously inserted cage, performed on a patient with a history of previous anterior cervical discectomy and fusion without uncoforaminotomy at C5-6-7 who had persistent pain radiating to the upper extremity along with progressive weakness. Satisfactory results were achieved. This procedure should be regarded as an effective option for surgical treatment of persistent or recurrent radiculopathy caused by remaining foraminal stenosis following anterior cervical fusion, and we suggest it as a new indication for this procedure.์ถ”๊ฐ„๊ณต ์ ˆ์ œ์ˆ  ์—†์ด ์ œ5-6-7 ๊ฒฝ์ถ”๊ฐ„ ์ „๋ฐฉ ๊ฒฝ์ถ”๊ฐ„ํŒ ์ ˆ์ œ์ˆ  ๋ฐ ์ถ”์ฒด๊ฐ„ ์œ ํ•ฉ์ˆ ์„ ์‹œํ–‰ํ•œ ํ›„ ์ง€์†๋˜๋Š” ๋ฐฉ์‚ฌํ†ต๊ณผ ์•…ํ™”๋˜๋Š” ์œ„์•ฝ๊ฐ์— ๋Œ€ ํ•ด, ์ด๋ฏธ ์‚ฝ์ž…๋œ ์ผ€์ด์ง€์˜ ์ œ๊ฑฐ ์—†์ด ์ œ7 ๊ฒฝ์ถ”์˜ ์ผ๊ด„ ๊ตฌ์ƒ๋Œ๊ธฐ ์ „์ ˆ์ œ์ˆ ๋งŒ์„ ์‹œํ–‰ํ•˜์—ฌ ๋งŒ์กฑ์Šค๋Ÿฌ์šด ๊ฒฐ๊ณผ๋ฅผ ์–ป์„ ์ˆ˜ ์žˆ์—ˆ๋˜ ์ฆ๋ก€๋ฅผ ๋ณด ๊ณ ํ•˜๋Š” ๋ฐ”์ด๋‹ค. ์ด ์ˆ ์‹์€ ์ „๋ฐฉ ๊ฒฝ์ถ”๊ฐ„ ์œ ํ•ฉ์ˆ  ํ›„ ๊ณจ์œ ํ•ฉ๋œ ์ƒํƒœ์—์„œ ์ž”์กดํ•˜๋Š” ์ถ”๊ฐ„๊ณต ํ˜‘์ฐฉ์ฆ์— ์˜ํ•ด์„œ ์ง€์†๋˜๊ฑฐ๋‚˜ ์žฌ๋ฐœ๋œ ์‹ ๊ฒฝ๊ทผ์ฆ ์˜ ์น˜๋ฃŒ์— ํšจ๊ณผ์ ์ธ ์„ ํƒ์œผ๋กœ ๊ณ ๋ ค๋  ์ˆ˜ ์žˆ์„ ๊ฒƒ์ด๋ฉฐ, ์ด๋ฅผ ์ด ์ˆ ์‹์˜ ์ƒˆ๋กœ์šด ์ ์‘์ฆ์œผ๋กœ ์ œ์•ˆํ•˜๋Š” ๋ฐ”์ด๋‹ค.OAIID:oai:osos.snu.ac.kr:snu2014-01/102/0000004226/22ADJUST_YN:YEMP_ID:A079510DEPT_CD:801CITE_RATE:0FILENAME:2014_๊ตฌ์ƒ๋Œ๊ธฐ ์ „์ ˆ์ œ์ˆ ์˜ ์žฌ๋ฐœ๊ฒฌ.pdfDEPT_NM:์˜ํ•™๊ณผCONFIRM:

    Total Uncinatectomy Revisited: Revision Surgery for Persistent Radiculopathy Following Anterior Cervical Discectomy and Fusion (ACDF)

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    We report on a case involving total en bloc uncinatectomy of C7 without removal of the previously inserted cage, performed on a patient with a history of previous anterior cervical discectomy and fusion without uncoforaminotomy at C5-6-7 who had persistent pain radiating to the upper extremity along with progressive weakness. Satisfactory results were achieved. This procedure should be regarded as an effective option for surgical treatment of persistent or recurrent radiculopathy caused by remaining foraminal stenosis following anterior cervical fusion, and we suggest it as a new indication for this procedure.OAIID:oai:osos.snu.ac.kr:snu2014-01/102/0000004226/10SEQ:10PERF_CD:SNU2014-01EVAL_ITEM_CD:102USER_ID:0000004226ADJUST_YN:NEMP_ID:A079510DEPT_CD:801CITE_RATE:0DEPT_NM:์˜ํ•™๊ณผSCOPUS_YN:NCONFIRM:

    ๊ด€๊ณ„ํ˜• ๋ฐ์ดํƒ€๋ฒ ์ด์Šค ์‹œ์Šคํ…œ์—์„œ์˜ XML ๋ฐ์ดํƒ€์˜ ์ง€์›

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์ปดํ“จํ„ฐ๊ณตํ•™๊ณผ,2000.Maste

    ๊ณ ์ถ”์—์„œ ๊ฐ„๋‹จํ•œ ๋ฐ˜๋ณต ์—ผ๊ธฐ์„œ์—ด์˜ ํŠน์ง•๊ณผ ์ด๋ฅผ ์ด์šฉํ•œ ๋ถ„์ž ์œ ์ „์ž ์ง€๋„ ์ž‘์„ฑ

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    Thesis (master`s)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์›์˜ˆํ•™๊ณผ,2000.Maste

    METHODS AND DEVICES FOR DETERMINING THE POSITION OF THE JAMMERS

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    ์žฌ๋จธ ์œ„์น˜ ๊ฒฐ์ • ๋ฐฉ๋ฒ• ๋ฐ ์žฅ์น˜๊ฐ€ ๊ฐœ์‹œ๋œ๋‹ค. ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ์žฌ๋จธ ์œ„์น˜ ๊ฒฐ์ • ๋ฐฉ๋ฒ•์€ ์ œ1 ์ฑ„๋„์˜ ํ†ต์‹  ์„ฑ๊ณต ํ™•๋ฅ (successful transmission probability)์„ ๊ฒฐ์ •ํ•˜๋Š” ๋‹จ๊ณ„, ์ œ2 ์ฑ„๋„์˜ ๋„์ฒญ ์‹คํŒจ ํ™•๋ฅ (outage probability)์„ ๊ฒฐ์ •ํ•˜๋Š” ๋‹จ๊ณ„, ํ†ต์‹  ์„ฑ๊ณต ํ™•๋ฅ ๊ณผ ๋„์ฒญ ์‹คํŒจ ํ™•๋ฅ ์— ๊ธฐ์ดˆํ•˜์—ฌ ๋ณด์•ˆ ์ „์†ก ํ™•๋ฅ (secrecy transmission probability)์„ ๊ฒฐ์ •ํ•˜๋Š” ๋‹จ๊ณ„, ๋ฐ ๋ณด์•ˆ ์ „์†ก ํ™•๋ฅ ์— ๊ธฐ์ดˆํ•˜์—ฌ ์žฌ๋จธ(jammer)์˜ ์œ„์น˜๋ฅผ ๊ฒฐ์ •ํ•˜๋Š” ๋‹จ๊ณ„๋ฅผ ํฌํ•จํ•˜๊ณ , ์ œ1 ์ฑ„๋„์€ ์ „์†ก๊ธฐ์™€ ์ˆ˜์‹ ๊ธฐ ์‚ฌ์ด์˜ ๋ฉ”์ธ ๋งํฌ(main link) ๋ฐ ์žฌ๋จธ์™€ ์ˆ˜์‹ ๊ธฐ ์‚ฌ์ด์˜ ๊ฐ„์„ญ ๋งํฌ(interference link)๋ฅผ ํฌํ•จํ•˜๊ณ , ์ œ2 ์ฑ„๋„์€ ์ „์†ก๊ธฐ์™€ ํ•˜๋‚˜ ์ด์ƒ์˜ ๋„์ฒญ์žฅ์น˜ ์‚ฌ์ด์˜ ๋„์ฒญ ๋งํฌ(eavesdropping link) ๋ฐ ์žฌ๋จธ์™€ ๋„์ฒญ์žฅ์น˜ ์‚ฌ์ด์˜ ์žฌ๋ฐ ๋งํฌ(jamming link)๋ฅผ ํฌํ•จํ•œ๋‹ค

    Multi-bit partial sum network device for parallel SC decoder

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    ๋ณธ ๋ฐœ๋ช…์€ ๋ณ‘๋ ฌ SC ๋ณตํ˜ธ๊ธฐ์˜ ๋ฉ€ํ‹ฐ๋น„ํŠธ ๋ถ€๋ถ„ํ•ฉ ๋„คํŠธ์›Œํฌ ์žฅ์น˜์— ๊ด€ํ•œ ๊ฒƒ์œผ๋กœ, ์ด์ „ ๋ณตํ˜ธ ๊ฒฐ๊ณผ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋งคํŠธ๋ฆญ์Šค๋ฅผ ์ƒ์„ฑํ•˜๋Š” ๋งคํŠธ๋ฆญ์Šค ์ƒ์„ฑ ์œ ๋‹›๊ณผ, ๋งคํŠธ๋ฆญ์Šค ์ƒ์„ฑ ์œ ๋‹›์˜ ๋งคํŠธ๋ฆญ์Šค๋ฅผ ์—ฐ์‚ฐํ•˜์—ฌ ๋ถ€๋ถ„ํ•ฉ์„ ์—ฐ์‚ฐํ•˜๋Š” ๋ถ€๋ถ„ํ•ฉ ์—ฐ์‚ฐ ์œ ๋‹›๊ณผ, ๋ถ€๋ถ„ํ•ฉ ์—ฐ์‚ฐ ์œ ๋‹›์˜ ์—ฐ์‚ฐ๊ฒฐ๊ณผ๋“ค ์ค‘ ์ผ๋ถ€๋ฅผ ์„ ํƒํ•˜์—ฌ ํ”„๋กœ์„ธ์‹ฑ ์—˜๋ฆฌ๋จผํŠธ๋กœ ์ œ๊ณตํ•˜๋Š” ์—ฐ๊ฒฐ ๋ฉ€ํ‹ฐํ”Œ๋ž™์„œ๋ฅผ ํฌํ•จํ•˜๋Š” ๋ณ‘๋ ฌ SC ๋ณตํ˜ธ๊ธฐ์˜ ๋ฉ€ํ‹ฐ๋น„ํŠธ ๋ถ€๋ถ„ํ•ฉ ๋„คํŠธ์›Œํฌ ์žฅ์น˜์— ์žˆ์–ด์„œ, ์ƒ๊ธฐ ๋งคํŠธ๋ฆญ์Šค ์ƒ์„ฑ ์œ ๋‹›์€, ์ตœ๋Œ€ ์ƒ์„ฑ ๋น„ํŠธ์˜ ์ˆ˜๋ฅผ ์ƒ๊ธฐ ํ”„๋กœ์„ธ์‹ฑ ์—˜๋ฆฌ๋จผํŠธ์˜ ์ˆ˜์™€ ๋™์ˆ˜๋กœ ํ•œ์ •ํ•˜๊ณ , ์ž”์—ฌ ์Šคํ…Œ์ด์ง€๋“ค ๊ฐ๊ฐ์˜ ๋ฉ€ํ‹ฐํ”Œ๋ž™์„œ์˜ ์ž…๋ ฅ์ˆ˜๋ฅผ ์ƒ๊ธฐ ์ตœ๋Œ€ ์ƒ์„ฑ ๋น„ํŠธ์˜ ๋งˆ์ง€๋ง‰ ์Šคํ…Œ์ด์ง€์˜ ๋ฉ€ํ‹ฐํ”Œ๋ž™์„œ์˜ ์ž…๋ ฅ์ˆ˜์™€ ๋™์ˆ˜๋กœ ์ œํ•œ๋œ๋‹ค

    Polar codes decoding device and method thereof

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    ๋ณธ ๋ฐœ๋ช…์€ ๊ทน๋ถ€ํ˜ธ ๋ณตํ˜ธ ์žฅ์น˜ ๋ฐ ๋ฐฉ๋ฒ•์— ๊ด€ํ•œ ๊ฒƒ์œผ๋กœ, ์ˆ˜์‹  ๋น„ํŠธ๋ฅผ ์ €์žฅํ•˜๋Š” ๋ฉ”๋ชจ๋ฆฌ์™€, ์ƒ๊ธฐ ๋ฉ”๋ชจ๋ฆฌ์˜ ์ˆ˜์‹  ๋น„ํŠธ์˜ ๋…ธ๋“œ์— ๋”ฐ๋ผ F์—ฐ์‚ฐ ๋˜๋Š” G์—ฐ์‚ฐ์„ ์ˆ˜ํ–‰ํ•˜๋˜, ์ŠคํŽ˜์…œ ๋…ธ๋“œ์˜ ํ”„๋ฃจ๋‹ ๊ณผ์ •๊ณผ ๋™์‹œ์— ํ›„๋ณด ๋ถ€๋ถ„ํ•ฉ(Candidate Partial Sum)์„ ์ด์šฉํ•˜์—ฌ G์—ฐ์‚ฐ์„ ์ˆ˜ํ–‰ํ•˜๋Š” ํ”„๋กœ์„ธ์‹ฑ ์—˜๋ฆฌ๋จผํŠธ(Processing Element)์™€, ํ”„๋ฃจ๋‹์„ ์ˆ˜ํ–‰ํ•˜์—ฌ ๋ณตํ˜ธํ™”๋œ ์ •๋ณด ๋น„ํŠธ๋ฅผ ์ถœ๋ ฅํ•จ๊ณผ ์•„์šธ๋Ÿฌ ํ”„๋ฃจ๋‹ ๊ณผ์ • ์ค‘ ๋ถ„๋ฅ˜(sorting) ์ „์˜ ๊ฐ’์„ ์„ ํƒ์ ์œผ๋กœ ์ถœ๋ ฅํ•˜๋Š” ๋ฉ”ํŠธ๋ฆญ ์—ฐ์‚ฐ ์œ ๋‹›(Metric Computing Unit)์™€, ๋ถ€๋ถ„ํ•ฉ์„ ์—ฐ์‚ฐํ•˜๋ฉฐ, ์ƒ๊ธฐ ๋ฉ”ํŠธ๋ฆญ ์—ฐ์‚ฐ ์œ ๋‹›์˜ ๋ถ„๋ฅ˜ ์ „์˜ ๊ฐ’์„ ์ด์šฉํ•˜์—ฌ ์ƒ๊ธฐ ํ›„๋ณด ๋ถ€๋ถ„ํ•ฉ์„ ์—ฐ์‚ฐํ•˜์—ฌ ์ถœ๋ ฅํ•˜๋Š” ๋ถ€๋ถ„ํ•ฉ ๋„คํŠธ์›Œํฌ(Partial Sum Network)๋ฅผ ํฌํ•จํ•œ๋‹ค

    Cooperative base station setting method for ultra-high density network

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    ๋ณธ ๋ฐœ๋ช…์€ ์ดˆ๊ณ ๋ฐ€๋„ ๋„คํŠธ์›Œํฌ๋ฅผ ์œ„ํ•œ ํ˜‘๋ ฅ ๊ธฐ์ง€๊ตญ ์„ค์ •๋ฐฉ๋ฒ•์— ๊ด€ํ•œ ๊ฒƒ์œผ๋กœ, ์ดˆ๊ณ ๋ฐ€๋„ ๋ฌด์„  ๋„คํŠธ์›Œํฌ ํ™˜๊ฒฝ์—์„œ ์ฃผ๊ธฐ์ง€๊ตญ์˜ ์ œ์–ด๋ถ€๊ฐ€ ์†ก์ˆ˜์‹ ๋ถ€๋ฅผ ํ†ตํ•ด ๋‹ค๋ฅธ ๊ธฐ์ง€๊ตญ๋“ค๊ณผ ํ†ต์‹ ํ•˜์—ฌ ํ˜‘๋ ฅ ๊ธฐ์ง€๊ตญ์„ ์„ค์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•์— ์žˆ์–ด์„œ, ๋‹จ๋ง์—์„œ ์ˆ˜์‹ ๋œ ๊ธฐ์ง€๊ตญ๋“ค์˜ ์ˆ˜์‹  ๋งํฌ ํŒŒ์›Œ๋ฅผ ํ™•์ธํ•˜๊ณ , ๊ฐ€์žฅ ๊ฐ•ํ•œ ์ˆ˜์‹  ๋งํฌ ํŒŒ์›Œ๋ฅผ ๊ฐ€์ง€๋Š” ๊ธฐ์ง€๊ตญ์„ ์ฃผ๊ธฐ์ง€๊ตญ์œผ๋กœ ์„ค์ •ํ•˜๊ณ , ์ƒ๊ธฐ ์ฃผ๊ธฐ์ง€๊ตญ์˜ ์ˆ˜์‹  ๋งํฌ ํŒŒ์›Œ์— ๋Œ€ํ•œ ์ฃผ๊ธฐ์ง€๊ตญ์„ ์ œ์™ธํ•œ ๊ฐ ๊ธฐ์ง€๊ตญ๋“ค์˜ ์ˆ˜์‹  ๋งํฌ ํŒŒ์›Œ์˜ ๋น„๋ฅผ ๊ตฌํ•˜๊ณ , ๊ฐ ๊ธฐ์ง€๊ตญ๋“ค์˜ ์ˆ˜์‹  ๋งํฌ ํŒŒ์›Œ์˜ ๋น„๊ฐ€ ์„ค์ • ๊ฐ’ ์ด์ƒ์ธ ๊ธฐ์ง€๊ตญ๋“ค์„ ํ˜‘๋ ฅ ๊ธฐ์ง€๊ตญ์œผ๋กœ ์„ค์ •ํ•œ๋‹ค
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