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VP-16으로 성공적으로 치료된 위 Kaposi 육종 1예
양웅석,송근암,조몽,이재승,송철수,김형욱,김영민,이수봉,김태오,이성훈 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.4
The skin is an uncommon site of distant metastasis from any internal malignancy, and the incidence of metastatic skin lesions as the first symptom of disease is only 0.8% in patients with all systemic malignancies. Furthermore, cutaneous metastasis from adenocarcinoma of the stomach has been found to be extremely rare. A 35-year-old female patient was admitted due to multiple cutaneous nodules in her chest, abdomen, and back. A gastroendoscopic examination and biopsy was made according to the results of skin pathologic findings. Stomach and skin biopsy results revealed a signet ring cell type of adenocarcinoma. A case of gastric adenocarcinoma in which metastatic skin nodules appeared as the first sign of disease, is here in reported with a review of related literature.
MMP-1 promoter polymorphism in Korean with generalized aggressive periodontitis
Hyong-Suk Oh,김옥수,김영준,정현주 대한치주과학회 2009 Journal of Periodontal & Implant Science Vol.39 No.2
Purpose: The aim of this study was to investigate matrix metalloproteinase 1 (MMP-1) gene polymorphism (1G/2G at -1607 and A/G at -519) in Korean subject and to assess the association between polymorphism and periodontal status. Methods: Forty nine generalized aggressive periodontitis (GAP) patients and 57 periodontally healthy children were recruited and genomic DNA was extracted from buccal swab. The polymorphisms of MMP-1 promoter genes were determined by polymerase chain reaction and restriction fragment length product (PCR-RFLP) method. The distribution of genotype and allele frequency was compared between 2 groups by χ² test. Results: There was a significant difference in the distribution of genotypes and frequency of alleles between the GAP and reference groups at the position -519 of MMP-1 gene promoter (P <0.05). Allele G carrier rate was significantly lower in GAP group than that of the reference group (P <0.001). At the position -1607 of MMP-1 gene promoter, genotype distribution and allele frequency showed no statistically significant difference between the groups. However, in the female group, a significant difference was observed between the groups for the genotype distribution, allele frequency and allele 1G carrier rate (P <0.05). Conclusions: The DNA polymorphism at the MMP-1 gene promoter might be associated with GAP in Korean.(J Korean Acad Periodontol 2009;39:269-278)
MMP-1 promoter polymorphism in Korean with generalized aggressive periodontitis
Oh, Hyong-Suk,Kim, Ok-Su,Kim, Young-Jun,Chung, Hyun-Ju Korean Academy of Periodontology 2009 Journal of Periodontal & Implant Science Vol.39 No.2
Purpose: The aim of this study was to investigate matrix metalloproteinase 1 (MMP-1) gene polymorphism (1G/2G at -1607 and A/G at -519) in Korean subject and to assess the association between polymorphism and periodontal status. Methods: Forty nine generalized aggressive periodontitis (GAP) patients and 57 periodontally healthy children were recruited and genomic DNA was extracted from buccal swab. The polymorphisms of MMP-1 promoter genes were determined by polymerase chain reaction and restriction fragment length product (PCR-RFLP) method. The distribution of genotype and allele frequency was compared between 2 groups by ${\chi}^2$ test. Results: There was a significant difference in the distribution of genotypes and frequency of alleles between the GAP and reference groups at the position - 519 of MMP-1 gene promoter (P<0.05). Allele G carrier rate was significantly lower in GAP group than that of the reference group (P< 0.001). At the position -1607 of MMP-1 gene promoter, genotype distribution and allele frequency showed no statistically significant difference between the groups. However, in the female group, a significant difference was observed between the groups for the genotype distribution, allele frequency and allele 1G carrier rate (P< 0.05). Conclusions: The DNA polymorphism at the MMP-1 gene promoter might be associated with GAP in Korean.
김태오,강대환,양웅석,조몽,송철수,송근암,김형욱,류수형 대한소화기학회 1999 대한소화기학회지 Vol.34 No.4
Background/Aims: In viral hepatitis, it is unclear whether iron and copper play a role in the pathogenesis of hepatic injury. The purpose of this study was to investigate the presence of correlation between the hepatic concentrations of these metals and the grades of inflammation or stages of fibrosis in patients with chronic viral hepatitis. Methods: This study included 53 patients consisting of 44 patients with chronic hepatitis B, 6 patients with chronic hepatitis C, and 3 patients with cirrhosis. Hepatic iron and copper concentrations were determined by Inductively Coupled Plasma- Atomic Emission Spectrometry. Results: Average hepatic iron concentration was 583.2±606.5 ㎍/g dry weight. In one patient (1.9%), hepatic iron concentration was unusually high (4573.0 ㎍/g dry weight). Hepatic iron concentrations were not different according to the grade of portal/periportal and lobular inflammation, or the stage of fibrosis. Average hepatic copper concentration was 65.3±35.3 ㎍/g dry weight and hepatic coponcentrations were increased in 25 patients (47.2%). Hepatic copper concentrations were significantly related with the grade of portal/periportal inflammation (rs=0.475, p$lt;0.001), lobular inflammation (rs=0.362, p=0.008), and the stage of fibrosis (rs=0.410, p=0.002). Conclusions: These results suggest that copper may have an important role as a cofactor in the pathogenesis of hepatic injury in chronic viral hepatitis.
시스템 모델링을 위한 일반화된 RBF 신경회로망의 온라인 구성
권오신,김형석,최종수,Kwon, Oh-Shin,Kim, Hyong-Suk,Choi, Jong-Soo 대한전자공학회 2000 電子工學會論文誌-CI (Computer and Information) Vol.37 No.1
이 논문에서는 비선형 시스템 모델링을 위한 일반화된 RBF 신경회로망(GRBFN)을 순차적으로 구성하기 위한 온라인 학습 알고리즘을 제안한다. 상수 연결강도를 갖는 표준 RBF 신경회로망의 확장형인GRBFN은 여러 개의 국부 선형모델을 결합하여 비선형 시스템을 표현할 수 있는 구조이다. 제안한 학습 알고리즘은 구조 학습과 파라미터 학습을 수행하는 두 단계의 학습으로 구성된다. 구조 학습은 주어진 훈련 데이터로부터 새로운 은닉 유니트 및 선형 국부모델을 할항하기 위하여 훈련 오차와 Mahalanobis 거리에 기초한 두 개의 생성 조건을 이용하여 GRBFN 모델을 구성한다. 파라미터 학습은 경사강하 법칙을 기반으로 기존 네트웍의 파라미터 벡터를 갱신한다. 제안한 알고리즘의 모델링 성능을 평가하기 위해서 잘 알려진 두 예제에 대한 시뮬레이션 및 결과를 제시한다. This paper presents an on-line learning algorithm for sequential construction of generalized radial basis function networks (GRBFNs) to model nonlinear systems from empirical data. The GRBFN, an extended from of standard radial basis function (RBF) networks with constant weights, is an architecture capable of representing nonlinear systems by smoothly integrating local linear models. The proposed learning algorithm has a two-stage learning scheme that performs both structure learning and parameter learning. The structure learning stage constructs the GRBFN model using two construction criteria, based on both training error criterion and Mahalanobis distance criterion, to assign new hidden units and the linear local models for given empirical training data. In the parameter learning stage the network parameters are updated using the gradient descent rule. To evaluate the modeling performance of the proposed algorithm, simulations and their results applied to two well-known benchmarks are discussed.
이효상(Hyo-Sang Lee),김준형(Jun-Hyong Kim),오암석(Am-Suk Oh) 한국정보통신학회 2021 한국정보통신학회 종합학술대회 논문집 Vol.25 No.2
최근 대부분의 매장에서 직원과 고객이 직접 대면하여 주문 하는 시스템이 사라지고 무선 주문 시스템인 키오스크가 도입되고 있다. 하지만 매장에서 서비스하고 있는 Drive-Thru는 아직까지 직원과 고객이 직접 소통을 하여 주문 하는 시스템을 가지고 있다. 본 논문에서는 Drive-Thru의 직원과 고객이 직접 소통하는 부분을 QR-Code를 이용하여 고객이 직원과 대면하지 않고 주문을 하는 Drive-Thru 시스템의 설계를 제안한다. 비대면 Drive-Thru 시스템은 매장 내의 직원을 최소화하여 더욱 자동화 된 시스템 제공을 목적으로 한다. 이에 따라 고객들은 더욱 정확한 서비스를 제공 받으며 소비의 질을 높일 수 있는 효과를 지닌다. Recently, Kiosks, a wireless ordering system, has been introduced as the system where employees and customers order in person has disappeared in most stores. However, Drive-Thru, which is serviced in stores, still has a system where employees and customers communicate directly to order. In this paper, we propose the design of a Drive-Thru system in which customers order direct communication between Drive-Thru’s employees and customers without facing them using QR-Code. The non-face-to-face Drive-Thru system aims to provide a more automated system by minimizing employees in the store. As a result, customers receive more accurate services and have the effect of improving the quality of consumption.