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정준호(Joon-Ho Jung),김미진(Mi-Jin Kim),이현주(Hyun-Ju Lee),박미성(Mi-Sung Park),이상조(Sang-Jo Lee) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅱ
본 논문에서는 수사 정보와 문장간 유사도를 이용하여 문서의 수사 구조 트리를 생성하는 방법을 제안하였다. 말뭉치에서 찾아낸 수사 정보를 종류별로 분류하고, 이를 사용해서 문서 내의 수사 정보를 추출해서 가능한 모든 구조를 생성한다. 다음으로 문장간의 유사도를 사용해서 가중치가 가장 높은 하나의 구조를 선택한다. 생성된 수사 구조를 사용하여 문서를 요약할 수 있는데, 수사 정보는 언어적 특성을 이용하는 것이므로 도메인에 독립적인 요약 시스템을 만들 수 있다.
액티브 네트워크에서의 피드백을 이용한 효율적인 자원 할당 방안
정준호(Joon-Ho Jung),이중수(Joog-Soo Lee),이영희(Young-Hee Lee) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ
액티브 네트워크에서는 패킷을 전송을 위한 계산과정에서 액티브 노드의 자원을 사용하며, 이렇게 사용되는 자원을 패킷의 특성에 맞게 효율적으로 할당하는 것은 중요한 문제이다. 만약 자원을 효율적으로 분배하지 못하면 특정 패킷에 의해서 액티브 노드의 모든 자원이 소비되어서 다른 패킷을 처리하기 위한 자원을 할당할 수 없게 된다. 또한 악의가 있는 패킷 또는 오류가 발생한 패킷들에 의해서 동일한 문제가 발생할 수 있다. 본 논문에서는 이러한 문제의 해결을 위해서 CPU 스케줄러, 전송 스케줄러, feedback을 핵심요소로 가지는 액티브 네트워크에서의 효율적인 자원 할당 방안을 제안한다.
정준호 ( Joon Hoo Jung ),윤주호 ( Ju Ho Yun ),김일 ( Li Kim ),심상은 ( Sang Eun Shim ) 한국고무학회 2013 엘라스토머 및 콤포지트 Vol.48 No.1
압저항 효과(piezoresistive effect)는 가해진 외부 압력이나 힘에 의해 전기적 저항이 변하는 것을 말한다. 이러한 압저항 효과는 압력, 진동, 가속 등을 탐지하는 센서에 많이 이용되고 있다. 압저항 효과를 갖는 재료가 많지만 그 중에서도 특히, 전도성 충전제를 첨가한 고무 복합체는 충전제의 종류, 입자 크기, 입자 모양, 입자 종횡비(aspect ratio), 그리고 입자의 양 등을 조절하여 다양한 압력 범위에서의 압저항 효과를 발현할 수 있고, 고무를 기질로 사용함으로써 복합체에 탄성과 유연성을 줄 수 있기 때문에 많은 관심을 받고 있다. 본 논문에서는 압저항 효과의 기본원리 및 다양한 고무 복합체의 압저항 효과에 대해 알아본다. The term ``Piezoresistive effect`` describes a change in the electrical resistance of the material from deformed to its original shape by the external pressure, e.g., elongation, compression, etc. This phenomenon has various applications of sensors for monitoring pressure, vibration, and acceleration. Although there are many materials which have the piezoresistive effect, rubber (nano)composites with conductive fillers have attracted a great deal of attention because the piezoresistive effect appears at the various range of pressure by controlling the type of filler, particle size, particle shape, aspect ratio of particles, and filler content. Especially one can obtain the composites with elasticity and flexibility by using the rubber as a matrix. This paper aims to review the piezoresistive effect itself, their basic principles, and the various conductive rubber-composites with piezoresistive effect.
심하게 흡수된 치조제의 증강을 위한 골막하 터널링기법을 이용한 장골이식술에 대한 임상연구
박숭(Soong Park),정준호(Jun-Ho Jung),김여갑(Yeo-Gab Kim),권용대(Yong-Dae Kwon),최병준(Byung-Joon Choi),오주영(Joo-Young Ohe),이백수(Baek-Soo Lee) 대한구강악안면외과학회 2010 대한구강악안면외과학회지 Vol.36 No.5
Purpose: The objective of this study was to evaluate the efficacy of the subperiosteal tunneling technique with iliac block bone graft for bone augmentation in an edentulous alveolar ridge. Patients and Methods: Total of 8 sites in 7 patients were included in this study. The bone height was evaluated by CBCT preoperatively and 4 months after operation. Total of 11 implants were inserted and evaluated clinically and radiographically. Results: Mean value of the increased bone height was 6.29 mm and no implant failure was observed. There were no complications such as soft tissue dehiscence, exposure of the grafted bone and infection. Conclusion: We have achieved excellent clinical outcomes by this technique, so we concluded that it is useful for augmentation of severely deficient alveolar ridge.
실험적으로 일이킨 백서에서의 바이러스성 심근염에 대한 연구
박언휘(Eun Hwi Park),김흥주(Heung Joo Kim),김성진(Sung Jin Kim),방인숙(In Sook Bang),박성진(Seong Jin Park),구정완(Jung Wan Ku),윤성철(Sung Chul Yun),한동선(Dong Sun Han),정준호(Joon Ho Jung),김성숙(Sung Sook Kim) 대한내과학회 1993 대한내과학회지 Vol.45 No.1
Background: The authors injected EMC virus (Encephalomyocarditis virus) to induce viral myocarditis in ICR mice in order to study the survival rate and serial histopathologic change of viral myocarditis according to duration. Methods: Seventy adult male ICR mice of 8 to 10 weeks were used for experiment. Among 70 mice, 40 mice (Group I) were used to observe survival and 30 mice (Group II) were used to see serial histopathologic change (Each 5 mice were killed before and 5, 10, 20 days after virus injection). The hearts of animals were fixed in 10% buffered formalin and routinely processed. Hematoxylin & Eosin stain and Masson trichrome stain were done to observe inflammation and fibrosis. Results: 1) In Group I, 1 mouse died at each 2, 4, 5, 6 day after virus injection, and 4 mice died at 7 day and 2 mice died at 10 and 11 day. Total 10 animals among 40 died (mortality: 25%), and showed peak death period at 4-7 days, 2) In Group II, at 5th, 10th, 20th day after virus injection, average inflammatory grade in the myocardium were 1.8, 3.4, 2.0, respectively. 3) Histologic findings revealed monouclear cells infiltration, myofiber necrosis & degeneration. These changes occur multifocally rather than diffusely. Inflammation was most severe at 10 days. 4) Fibrosis was increased at 20 days after virus injection compared to early phase of myocarditis. Distribution of fibrosis is relatively parallel with the area of inflammation, but not with the degree of inflammation. 5) In some cases, dilation of both atriums and ventricles and thrombosis accompaning severe pulmonary congestion and edema were observed, indicating possible transition to dilated cardiomyopathy. Conclusions: It is considered that this experimental animal model may be useful not only to study the pathogenetic mechanisms of viral myocarditis but also to observe clinical course and evaluate the effect of possible drugs to treat myocarditis.
자궁경부암에서 Phospholipase C-γ1 의 과발현
김성숙,김정란,정준호,임문환,심재철,김용탁,윤혜원 동국대학교 경주대학 1993 東國論集 Vol.12 No.-
Phospholipase C isozymes(PLCs), which catalyzes the hydrolysis of inositol phospholipids to generate diacylglycerol and inositol 1, 4, 5-triphosphate, play a central role in the signal trnasduction pathway by regulating various cellular processes including cell to cell communication, proliferation and differentiation. Although exact role of PLCs needs further investigation, their biological significance has been suggested in several pathological states such as cancer. In this study, immunohistochemical analysis reveals considerably overexpression of PLC-γ1 in the majority of cervical neoplasm when compared to benign pathological condition except decidual polyp. Therefore, the overexpression of PLC-γ1 in cervical neoplasm suggests that PLC-γ1 mediated signal transduction pathway may be involved in the tumorigenesis or progress of cervical cancer.
1990년대 경요도전립선절제술 : 안정성과 효용성 및 숙련도에 대한 고찰 Safety, Efficacy and Skilled Experience
김동석,강정표,정준호,노상휴,김준용,심봉석,권성원 梨花女子大學校 醫科大學 醫科學硏究所 2001 EMJ (Ewha medical journal) Vol.24 No.2
Purpose : We retrospectively reviewed the cases of transurethral prostatectomy benign prostatic hyperplasia. We defined the morbidity, hospitalization and urethral catheter time, complication and operator's skilled experience and compared to transurethral prostatectomy in the historical series. Materials and Methods : A retrospective chart review of 720 consecutive patients who underwent tranasurethral prostatectomy between 1990 and 1999 at our institution for symptomatic benign prostatic hyperplasia was performed. Perioperative and late postoperative morbidity and their risk factors, hospitalization and urethral catheter time, operator's skilled experience were analyzed. The objective cases were divided by operator's experience into 5 groups, and compared in each group. Results : Patients were identified with an average of 66 years(range 45 to 88). Significant co-morbidity(2 or more co-morbid disease processes) was identified preoperatively in 22.1% of the patients. The most common indication for transurethral prostatectomy was prostatism only(63%). Average weight of resected tissue was 18.6gm. There was no perioperative patient mortality. Blood transfusion rate was 6.9%. The rates of early and late postoperative complications were 13.7% and 6.2%. Total average hospital stay was 5.5 days and 5.3 days from 1995 through 1999. Average preoperative symptom score was 23.8(range 10 to 35) and postoperative symptom score was 9.5(range 3 to 30) with an average follow up of 42 months(range 6 to 44 months). Conclusions : In the 1990s complications of transurethral prostatectomy were relatively lower than rates in historical series. The average hospital stay and urethral catheter time have steadily decreased during the last 10 years. Transurethral resection of prostate could provide relief of lower urinary tract symptoms with high safety rate and low complication rate. Our study suggest that technique of trnasurthral resection is improving step by step by accumulating experience of operation and stabilized skillful technique will be achieved after experience of more than 150 cases.