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소간세포암(≤2 cm)에서 절제술 후 임상-병리학적인 특성과 예후 인자
강상윤(Sang-Yoon Kang),김홍진(Hong-Jin Kim),윤성수(Sung-Su Yoon),이동식(Dong-Shik Lee) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.76 No.2
Purpose: Hepatectomy has been regarded as the first treatment of choice for small hepatocellular carcinoma. However, hepatectomy for treatment of small hepatocellular carcinoma remains a critical issue. This study evaluates the role of treatment regarding the survival rate and clinicopathological features after resection of small hepatocellular carcinoma (≤2 cm) Methods: This retrospective study was based on the medical records of 48 small hepatocellular carcinoma (≤2 cm) patients who received surgical hepatectomy from 1990 to 2005. Patients who revealed on postoperative pathologic reports were enrolled. The survival rate was analyzed according to clinicopathologic and therapeutic factors and we analyzed the pathologic features of the recurrence group. Results: The presence of liver cirrhosis, ICGR15 (Indocyanine green retension-15) was statistically significant in the univariate analysis. The vascular invasion rate and capsule formation rate was 90, 80% in the recurrence group. Conclusion: In the small hepatocellular carcinoma (≤2 cm), the presence of liver cirrhosis, ICGR15 (Indocyanine green retension-15) should be checked to predict prognosis. The small hepatocellular carcinoma (≤2 cm) is similar to advanced hepatocellular carcinoma so hepatectomy may play an important role in the small hepatocellular carcinoma(≤2 cm).
권역단위 농촌지역개발사업의 주민역량 측정을 위한 설문도구개발
리신호 ( Shin Ho Rhee ),민흥기 ( Heung Gi Min ),윤성수 ( Sung Soo Yoon ),정남수 ( Nam Su Jung ),장우석 ( Woo Seok Chang ) 한국농촌계획학회 2014 농촌계획 Vol.20 No.4
The purpose of this study was to develop survey tools for diagnosis of capacity levels in business promotion of rural residents when performing a rural development project of a regional unit. The cases of previous studies were analyzed to select community capacity indicators related to a rural development project. Five indicators were derived : social capital, consciousness of participation, community spirit, and leadership. Based on the five indicators, measurement items of various capacities were selected and 54 survey items were selected through evaluation of experts twice. The pilot tests were conducted and targeted at Jeonnam song ho-jung village and Gyeongnam Haegeumgang village to identify derived survey items. In addition, descriptive statistic analysis and reliability analysis were conducted. As a result, survey items were corrected by reducing 10 items of the total 54 items. This results showed that using this tool could help us understand capacity levels of rural residents.
진공 게이트 스페이서를 지니는 Bulk FinFET의 단채널효과 억제를 위한 소자구조 최적화 연구
연지영 ( Ji-yeong Yeon ),이광선 ( Khwang-sun Lee ),윤성수 ( Sung-su Yoon ),연주원 ( Ju-won Yeon ),배학열 ( Hagyoul Bae ),박준영 ( Jun-young Park ) 한국전기전자재료학회 2022 전기전자재료학회논문지 Vol.35 No.6
Semiconductor devices have evolved from 2D planar FETs to 3D bulk FinFETs, with aggressive device scaling. Bulk FinFETs make it possible to suppress short-channel effects. In addition, the use of low-k dielectric materials as a vacuum gate spacer have been suggested to improve the AC characteristics of the bulk FinFET. However, although the vacuum gate spacer is effective, correlation between the vacuum gate spacer and the short-channel-effects have not yet been compared or discussed. Using a 3D TCAD simulator, this paper demonstrates how to optimize bulk FinFETs including a vacuum gate spacer and to suppress short-channel effects.
간세포암의 근치적 간절제술 후 장기생존과 연관된 예후인자
노무정(Mu-Jung Roh),김홍진(Hong-Jin Kim),윤성수(Sung-Su Yoon),배정민(Jung-Min Bae),이동식(Dong-Sik Lee) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.76 No.4
Purpose: Although advancement in treatment and diagnostic tools related to hepatocelluar carcinoma has been much improved, long term survival rates of hepatocellular carcinoma are still low because of delayed clinical manifestations and underlying diseases causing the cancer. Various kinds of modalities to treat hepatocellular carcinoma have developed but surgical resection is still recognized as the best method. Therefore, we studied the associated factors of long-term survival after liver resection. Methods: We retrospectively analyzed 184 patients who were pathologically diagnosed with hepatocellular carcinoma from May 1990 to December 2002. Associated factors of long-term survival classified as preoperative, operative, pathological and recurrence factors. Univariate and multivariate analyses were done using cross tabulation analysis and logistic regression analysis. Results: The cumulative 1??, 3?? and 5??year survival rates were 66%, 50% and 30%, respectively. Preoperative factors, significantly associated with long-term survival, were age of 60 years and under, tumor size, HBe Ag status and preoperative tumor marker level. As pathological factors, the vascular invasion and lymphatic invasion status were significantly associated. But cirrhosis of the liver was not associated with long-term survival. And in cases of recurrence, patients who had undergone repeat resection survived significantly longer. Conclusion: The most significant factors of multivariate analyses were lymphatic invasion status. Tumor size, ICG?R15 and HBe Ag status followed second. We should correct the preoperative factors through screening and early diagnosis. And when recurrence occurs, if the recurring cancer has resectability, repeat hepatectomy will increase the patient"s lifespan.
권역단위사업에서 주민 갈등 분석에 의한 사회적 취약성 평가
리신호 ( Shin Ho Rhee ),민흥기 ( Heung Gi Min ),윤성수 ( Sung Soo Yoon ),정남수 ( Nam Su Jung ),장우석 ( Woo Seok Chang ) 한국농촌계획학회 2015 농촌계획 Vol.21 No.1
In this study, we try to quantify resident``s conflict by rural development project based on previous researches about community capacities required for residents and social networks in rural village for suggesting efficient project model. we analyzed conflict elements in six category such as ``conflict in residents``, ``conflict in residents and leaders``, ``conflict in leaders``, ``conflict in villages``, ``conflict in development fund``, ``conflict in village by common income project``. These results also analyzed by personal background(age, role, education, income) of respondent in questionary survey. Results show that ``conflict in residents and leaders``, ``conflict in leaders``, ``conflict in development fund`` are perceived differently by age, role, education, and income in 5% significance level. Especially, relatively young age(below 40 years old) expressed clearly about conflict and high scored in item of ``residents and leaders``. Regression model show statistical significance(F=39.807, P=0.000) in influence relation analysis of conflict, network, leadership, and project fund. In this model, network β=-0.237, leadership β=-0.375, project fund β=-0.000 show network and leadership have negative relation to conflict but project fund is difficult to find relation with conflict. In this study, we defined social vulnerability using conflict, network, and leadership and verified the vulnerability of rural village applying regional community capacity in analysis results; vulnerability increased by the size of region and show inverse correlation to future vision of residents.