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최호용 대한전자공학회 1998 電子工學會論文誌, C Vol.c35 No.4
In this paper, we propose a test generation method for large scale sequential circuits based on circuit partitioning to increase the size of circuits that the implicit product machine traversal (IPMT) method can handle. Our method paratitions a circuit under test into subset circuits with only single output, and performs a partial scan design using the state transtition cost that represents a degree of the connectivity of the subset circuit. The IPMT method is applied to the partitioned partial scan circuits in test generation. Experimental results for ISCAS89 benchmark circuits with more thatn 50 flip-flops show that our method has generated test patterns with almost 100% fault coverage at high speed by use of 34%-73% scanned flip-flops.
최호용 한국상사법학회 2007 商事法硏究 Vol.26 No.1
A Legal Study on Transfer and Lease of Frequencies Usage Right
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.
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.