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김영생(Young Saeng Kim),이종원(Jong Won Lee),임병천(Byung Chun Yim) 한국유럽학회 2000 유럽연구 Vol.11 No.1
The social system and it`s dynamics bring the structural process changes enormously. They acquire competence to survive and remain competitive under the market economic conditions. One of the main problems during the recent development of financial institutions in Europe and Korea is that the organizational structure is not able to grow simultaneously and organizational forms are not adequate to the changed new environments. As results there are lags in the handing over informations and missing clear definition of areas of competence. Beside many technical changes by the implementation of new technologies the dynamic system theory especially self-organization was improved as successfiil also in financial institutions.
김영생 ( Young Saeng Kim ),구본호 ( Bon Ho Ku ),최유경 ( Yu Kyung Choi ),김종훈 ( Jong Hun Kim ),손희정 ( Hee Jung Sohn ),백소야 ( So Ya Paik ),이예리 ( Ye Ri Lee ) 대한내과학회 2009 대한내과학회지 Vol.76 No.5
Mammary-like glands are poorly recognized structures of normal vulvar skin. Here, we report the first case of primary mammary-like gland adenocarcinoma of the vulva in Korea and discuss the differential diagnosis and treatment of this rare tumor. A 62-year-old woman presented with an itching sensation and palpable mass of the vulva. Abdominal computed tomography showed multiple variable-sized nodules with peripheral rim enhancement in the liver. The pathology of the vulva and liver lesions was consistent with invasive ductal carcinoma of the breast, with positive staining for estrogen receptors, progesterone receptors, HER-2, and GCDFP-15. Ultrasonography and magnetic resonance imaging of the breast were normal. Given the histological findings in conjunction with the absence of a breast lesion, a diagnosis of primary mammary-like gland adenocarcinoma of the vulva was made. She died of pneumonia 7 weeks after the diagnosis. (Korean J Med 76:605-610, 2009)
윤상후,이영생,박정수,Yoon, Sang-Hoo,Lee, Young-Saeng,Park, Jeong-Soo 한국통계학회 2009 Communications for statistical applications and me Vol.16 No.1
It is necessary to forecast the amount of the maximum electricity demand for stabilizing the flow of electricity. The time series data was collected from the Korea Energy Research between January 2000 and December 2006. The data showed that they had a strong linear trend and seasonal change. Winters seasonal model, ARMA model were used to examine it. Root mean squared prediction error and mean absolute percentage prediction error were a criteria to select the best model. In addition, a nonstationary generalized extreme value distribution with explanatory variables was fitted to forecast the maximum electricity. 한국의 경제규모가 꾸준히 커감에 따라 가정, 건물, 공장 등에서 필요로 하는 전력량이 지속적으로 증가하고 있다. 전력공급의 안정화를 위해서는 최대전력량보다 전력공급능력이 높아야 한다. 월별 최대전력량을 잘 설명할 수 있는 통계모형을 찾기 위해 Winters 모형, 분해 시계열모형, ARMA 모형, 설명 변수를 통해 추세성분과 계절성분을 교정한 모형을 살펴보았다. 모형의 예측력 비교 기준으로 모형적합으로부터 구한 RMSE와 MAPE가 사용되었다. 여름철 최대전력량을 예측하기 위해 평균기온과 열대야 일수를 설명 변수로 갖는 시계열 모형이 가장 우수하였다. 아울러 외부요인을 갖는 극단분포 모형을 이용한 분석을 시도하였다.
이상준(Sang Joon Lee),정필상(Phil-Sang Chung),김영생(Young Saeng Kim),윤경섭(Kyung Sub Yun) 대한두경부종양학회 2007 대한두경부 종양학회지 Vol.23 No.2
Objectives :Well differentiated thyroid carcinoma(WDTC) has relatively good prognosis. But recurrence is associated with increased morbidity and mortality, and always results in reoperation. So it is important to evaluate the risk factors relative to the recurrence. The aim of this study is to evaluate the risk factors of recurrence. Materials and Method :Two hundred seventeen patients who had undergone thyroidectomy and proved as WDTC from January 1999 to December 2004 was included in the study. We reviewed patient-related and tumor-related factors respectively and analyzed the correlation with tumor recurrence. Results :Fourteen patients from two hundreds seventeen had recurred. Recurrence rate was 6.5%, and aver-age interval of recurrence was 28 month. Male, age over 45, multiple mass, and advanced TMN stage patient group show higher recurrence rate, but no statistical significance. However, the recurrence rate of lymph node metastasis, tumor size >1.5cm, and extracapsular invasion group were statistically high. Conclusion :Lymph node metastasis, tumor size and extracapsular invasion are significant risk factors re-lated to the recurrence of WDTC.
장게실염에 동반된 Streptococcus viridans와 Bacteroides fragilis 균혈증에 의한 문맥염
구본호 ( Bon Ho Ku ),김영생 ( Young Saeng Kim ),김종훈 ( Jong Hun Kim ),최유경 ( Yu Kyong Choi ),연재우 ( Jae Woo Yeon ),이성규 ( Seong Gyu Lee ),김수연 ( Sue Yun Kim ) 대한내과학회 2009 대한내과학회지 Vol.76 No.5
Pylephlebitis, a septic thrombophlebitis of the portal vein or one of its tributaries, is a life-threatening complication of intra-abdominal infection. The causes of pylephlebitis include acute diverticulitis, appendicitis, acute cholecystitis, necrotizing pancreatitis, inflammatory bowel disease, and bowel perforation. Although pylephlebitis is an unusual complication of diverticulitis, its morbidity and mortality remain high. Therefore, early diagnosis and initiation of adequate antibiotic therapy is important for improving the long-term prognosis of patients suffering from this rare disease. We report a case of pylephlebitis with Streptococcus viridans and Bacteroides fragilis bacteremia secondary to diverticulitis with a review of the literature. (Korean J Med 76:622-626, 2009)