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비루관폐쇄 환자에서 보툴리눔 A 독소를 이용한 보존적 치료
이중호,김대윤,김광수,Jung Ho Lee,Dae Yune Kim,Kwang Soo Kim 대한안과학회 2007 대한안과학회지 Vol.48 No.10
Purpose: To describe the use of botulinum toxin injection of the lacrimal gland for palliative treatment of epiphora secondary to nasolacrimal duct obstruction. Methods: A prospective non-comparative interventional case series study was designed to include 13 patients with nasolacrimal duct obstruction. Under topical anesthesia botulinum toxin A (1-4unit) was injected into the palpebral lobe of the lacrimal gland via a transconjunctival approach. Patients underwent a Schirmer test and a subjective evaluation of their epiphora symptoms was performed at 0 (baseline), 1, 4 and 12 weeks after injection. Results: Subjective epiphora scores improved in 10 out of the 13 patients (76.9%). Schirmer test results showed objective reduction in tearing from baseline but did not strongly correlate with the subjective epiphora scores. Transient ptosis were experienced by two patients. Conclusions: Botulinum A toxin injection for palliative treatment of epiphora secondary to nasolacrimal duct obstruction is a simple, effective and safe treatment.
Domino CMOS NOR-NOR Array Logic의 Testable Design에 관한 연구
이중호,조상복,정천석,Lee, Joong-Ho,Cho, Sang-Bock,Jung, Cheon-Seok 대한전자공학회 1989 전자공학회논문지 Vol. No.
본 논문에서는 CMOS 및 domino CMOS 의 특징과 PLA등 array logic의 특징을 동시에 살리면서 동작특성이 좋고 집적도가 높으며 테스트 생성이 쉬운 domino CMOS NOR-NOR array logic의 설계방식을 제안하였다. 이 방식은 pull-down 특성을 개선하여 기생 커패시턴트의 문제점을 해결하며 간단한 부가회로를 사용하여 회로내의 모든 고정들을 검출할 수 있도록 한 testable design 방식이다. PLA의 적항군의 개념 및 특성 행렬을 이용한 테스트 생성 알고리듬과 절차를 제안하였고 이를 PASCAL 언어로 실현하였다. 또한 SPICE 및 P-SPICE를 이용하여 본 설계방식에 대한 검증을 행하였다. This paper proposes Domino CMOS NOR-NOR Array Logic design method which has the same as characteristic of CMOS and Domino CMOS in Array Logic like PLA, good operation feature, high desity, easy test generation. This testable design method can detect all of faults in the circuit using simple additional circuit and solve the parasitic capacitance problem by improving the pull-down characteristics. A Test generation algorithm and test procedure using concept of PLA product term and personality matrix are proposed, and it was implemented in PASCAL language. This design method is verified by SPICE and P-SPICE simulation.
고속반도체 메모리를 위한 DBI(Data Bus Inversion)를 이용한 저비용 CRC(Cyclic Redundancy Check)방식
이중호,Lee, Joong-Ho 한국전기전자학회 2015 전기전자학회논문지 Vol.19 No.3
고속동작을 위한 반도체 메모리 제품에서 데이터의 신뢰도를 개선하기 위해 CRC(Cyclic Redundancy Check) 기능이 내장되었으며, 데이터전송 속도 개선을 위해 DBI(Data Bus Inversion) 기능이 내장되었다. DDR4, GDDR4 등의 제품에 추가된 기존의 ATM-8 HEC 코드 방식은 부가회로 면적이 크고(~XOR 700 gates) CRC 처리 시간이 길어서(XOR 6단), 저전력 메모리 제품의 데이터 읽기, 쓰기시 내부 동작 마진(margin)에 적지 않은 부담을 초래한다. 본 논문에서는 저비용, 고속 반도체 메모리에 적합한 CRC방식을 제안하였으며 92%의 부가회로가 개선되었다. 제안한 CRC방식의 저비용 구현을 위해 DBI 기능을 이용하여 데이터 비트 오류 검출율을 보완하였으며, 오류 검출율을 분석하여 기존의 CRC방식과 비교하였다. CRC function has been built into the high-speed semiconductor memory device in order to increase the reliability of data for high-speed operation. Also, DBI function is adopted to improve of data transmission speed. Conventional CRC(ATM-8 HEC code) method has a significant amounts of area-overhead(~XOR 700 gates), and processing time(6 stage XOR) is large. Therefore it leads to a considerable burden on the timing margin at the time of reading and writing of the low power memory devices for CRC calculations. In this paper, we propose a CRC method for low cost and high speed memory, which was improved 92% for area-overhead. For low-cost implementation of the CRC scheme by the DBI function it was supplemented by data bit error detection rate. And analyzing the error detection rate were compared with conventional CRC method.
코헤시브 실리콘 젤 보형물을 이용한 유방확대술시 보형물 크기에 따른 유방 크기 변화 예측
이중호,서제원,이백권,오득영,이종원,안상태,Lee, Jung-Ho,Seo, Je-Won,Lee, Paik-Kwon,Oh, Deuk-Young,Rhie, Jong-Won,Ahn, Sang-Tae 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.3
Purpose: Predicting the change in breast size for a specific patient's need is a challenging problem in breast augmentation. We intended to investigate the postaugmentation degree of breast size according to the size of cohesive silicone gel implant. Methods: To predict post-augmentation breast size, we measured 100 patients' pre-and postoperative 3 month's bust circumference. All patients were performed by total subfascial breast augmentation with moderate profile cohesive silicone gel implant through areolar omega (transareolar-perinipple) incision. Results: According to this study, each additional one pair of 100 mL in implant size yielded an approximate 1.5 cm increase in bust circumference (p=0.006). Conclusion: From this result, we conclude that each additional one pair of 100 mL in implant volume yielded about 1.5 cm increase in bust circumference. Although this result may not be applied to every patient, we believe that it yields a practical chart that can help to predict the amount of increase in breast size with the use of cohesive silicone gel implant of a specific size preoperatively.