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최호용 한국국제정치학회 2010 한국국제정치학회 학술대회 발표논문집 Vol.2010 No.8
2008년 12월 15일부터 북한에 본격적인 휴대전화 서비스가 개시되었다. 이집트에 본사를 두고 있는 오라스콤 텔레콤社1)(이하 “오라스콤社”)가 북한 지역의 휴대전화 서비스 사업권을 획득한 지 약 1년 만에 서비스를 제공하게 된 것이다. 오라스콤社가 서비스를 제공하기 이전인 2002년에도 일부 휴대전화 서비스가 제공된 바가 있지만 본격적으로 서비스가 활성화되기도 전인 2004년 용천역 대폭발 사고로 인해 휴대전화 전면 금지령이 내려지면서 유야무야된 바가 있어 실질적인 휴대전화 서비스는 오라스콤社에 의해 시작되고 있는 것이라고 해도 무방하다 할 것이다. 오라스콤社의 서비스 제공은 1999년과 2001년에 휴대전화 관련 내용이 수정보충된 「체신법」과 2006년에 제정된 「전파관리법」체제하에서 이루어진 최초의 사업권 부여라는 측면에서도 상당한 의미를 가진다. 이 글에서는 그간의 북한의 휴대전화 사업에 대한 전반적인 동향을 살펴보고, 남북통신관련 사안과 그에 따른 관련 국내 법제에 대해서 검토해보도록 한다.
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최호용,오창완,방재승,권오기,김정은,강현승 대한뇌혈관외과학회 2011 Journal of Cerebrovascular and Endovascular Neuros Vol.13 No.3
Objective : Extracranial carotid artery aneurysm is a rare vascular disease. In this study, we present our experience with extracranial carotid artery aneurysm and we review the related articles with addressing different treatment options and their results. Me tho ds :Between 2003 and 2011, 11 patients (mean age : 52.7 years) were diagnosed to harbor extracranial carotid artery aneurysms. Five pa-tients underwent various surgeries and 2 patients were treated by endovascular methods. Four patients were managed conservatively. Resul ts : There were no perioperative/periprocedural mortality or morbidity related to the treatment of extracranial carotid artery aneurysms. During follow-up (mean follow-up : 39.3 months), 1 patient died of an unrelated cause and 2 other patients underwent stenting and/or angioplasty due to asymptomatic progressive stenosis of the treated site. Concl usi on : Aneurysm can be treated with low periprocedural risk by utilizing various therapeutic modalities. Long-term follow-up is mandatory to check for stenosis around the treatment site.
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최호용,현승재,이창현,윤지현,류미영,김기정 대한척추신경외과학회 2022 Neurospine Vol.19 No.3
Objective: This study is an investigator-initiated, prospective, randomized, controlled study to evaluate the efficacy and safety of the combined use of recombinant human BMP-2 (rhBMP-2) and a hydroxyapatite (HA) carrier in multilevel fusion in patients with adult spinal deformity (ASD). Methods: Thirty patients underwent posterolateral fusion for lumbar spinal deformities at 3 to 5 segments between L1 and S1. The patients received rhBMP-2+HA or HA on the left or right side of the transverse processes. They were followed up regularly at 1, 3, 6, and 12 months postoperatively. Fusion was defined according to the bone bridging on computed tomography scans. The fusion rate per segment was subanalyzed. Function and quality of life as well as pain in the lower back and lower extremities were evaluated. Results: The union rate for the rhBMP-2+HA group was 100% at 6 and 12 months. The union rate for the HA group was 77.8% (21 of 27) at 6 months and 88.0% (22 of 25) at 12 months (p = 0.014 at 6 months; not significant at 12 months). All segments were fused at 6 and 12 months in the rhBMP-2+HA group (p < 0.001). In the HA group, 108 of 115 segments (93.5%) were fused at 6 months and 105 of 109 segments (96.3%) at 12 months. Other clinical parameters (visual analogue scale, 36-item Short Form Health Survey, and Scoliosis Research Society-22 scores) improved compared to baseline. Conclusion: Combining rhBMP-2 and an HA carrier is a safe and effective method to achieve multilevel fusion in patients with ASD.
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최호용,서정일,유충호,우철종,이재은 대한전자공학회 2006 電子工學會論文誌-SD (Semiconductor and devices) Vol.43 No.11
This paper proposes a self-repair system which is able to self-repair in cell unit by imitating the structure of living beings. Because the data of artificial cells move even diagonally, our system can self-repair faults not in column unit, but in cell unit. It leads to design an efficient self-repair system for multiple faults. Moreover, in artificial cell design, the usage of logic-based design method has smaller system size than that of the previous register-based design method. Our experimental result for 2-bit up/down counter shows 40.3% reduction in hardware overhead, compared to the previous method [6]. 본 논문에서는 생명체의 구조를 모방하여, 다중고장에 대한 효율적인 자가치유시스템 구조를 제안한다. 기존의 자가치유시스템은 인공 셀의 데이터의 패스가 좌우상하로만 가능하여 열 단위 치유만이 가능했다. 또한, 인공 셀의 게놈블록의 설계에 있어서, gene정보 저장방식을 이용함으로써 하드웨어 오버헤드가 큰 문제점이 있다. 본 논문에서는 인공 셀의 데이터의 패스를 대각선으로도 가능하게 설계하여, 열 단위가 아닌 셀 단위로 고장 셀의 용이한 대체가 가능하고 다중고장에 대해서도 효율적으로 자가치유가 가능하다. 또한, 게놈블록은 로직기반 생성방식을 이용하여 설계함으로써 저면적 설계가 가능하다. 2진 up/down 카운터를 예제로 하여 설계한 결과 하드웨어 오버헤드를 약 40.3% 개선했다.
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최호용,조대진 대한척추신경외과학회 2021 Neurospine Vol.18 No.3
Objective: To compare the outcomes of S1 foraminal hooks and iliac screws regarding fusion rate at the lumbosacral junction and protective effects on S1 screws. Methods: From January 2017 to December 2019, consecutive patients who underwent long fusions (uppermost instrumented vertebra at or above L1) to the sacrum for adult spinal deformity were enrolled. Patients were divided into S1 foraminal hook group and iliac screw group. Radiographic parameters and the incidence of pseudarthrosis and instrument failure at the lumbosacral junction were compared between the groups. Results: Twenty-nine patients (male:female=1:28) with a mean age of 73.6±6.8 years were evaluated. Sixteen patients (55.2%) had S1 foraminal hook fixation and 13 patients (44.8%) had iliac screw fixation. Lumbar lordosis, sacral slope, and sagittal vertical axis did not differ between the groups preoperatively and postoperatively. The rate of L5/S1 pseudarthrosis was significantly higher in S1 foraminal hook group (5 of 16, 31.3%), compared to iliac screw group (0 of 13, 0%; p=0.048). Instrument failure at the lumbosacral junction trended toward a higher rate in S1 foraminal hook group (6 of 16, 37.5%) than in iliac screw group (1 of 13, 7.7%), without statistical significance (p=0.09). Proximal junctional kyphosis/failure occurred less often in S1 foraminal hook group (2 of 16, 12.5%) than in iliac screw group (3 of 13, 30.8%) without statistical significance (p=0.36). Conclusion: Treatment with S1 foraminal hooks achieved equivalent satisfactory sagittal correction with proportioned alignment compared to that with iliac screws. However, S1 foraminal hooks did not provide enough structural support to the lumbosacral junction in long fusions to the sacrum.
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