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<sup>1</sup>H*-tree: 데이터 스트림의 다차원 분석을 위한 개선된 데이터 큐브 구조
심상예 ( Xiangrui Chen ),정우상 ( Yuxiang Cheng ),이연 ( Yan Li ),신숭선 ( Song-sun Shin ),이동욱 ( Dong-wook Lee ),배해영 ( Hae-young Bae ) 한국정보처리학회 2008 한국정보처리학회 학술대회논문집 Vol.15 No.2
In this paper, based on H-tree, which is proposed as the basic data cube structure for multi-dimensional data stream analysis, we have done some analysis. We find there are a lot of redundant nodes in H-tree, and the treebuild method can be improved for saving not only memory, but also time used for inserting tuples. Also, to facilitate more fast and large amount of data stream analysis, which is very important for stream research, H*-tree is designed and developed. Our performance study compare the proposed H*-tree and H-tree, identify that H*-tree can save more memory and time during inserting data stream tuples.
대사증후군이 남성갱년기증후군의 증상 및 혈중 총 테스토스테론치에 미치는 영향
박현준,예정우,박창수,박남철 대한남성과학회 2008 The World Journal of Men's Health Vol.26 No.1
Purpose: Although concern about the health disorders in aging men have been growing, the association has not been elucidated in relation to the late onset male hypogonadism(LOH) and metabolic syndrome(MS). In this background, we evaluated the clinical impact of MS on LOH symptoms and serum total testosterone level. Materials and Methods: 100 patients with LOH symptoms who visited to the urology clinic between May, 2004 and October, 2006 were analyzed. Of all object, 48 patients were associated with MS(Group I) and 52 patients were not(Group II), based on the NCEP-ATP III(2001) guidelines. We compared the LOH status with Saint Louis University Androgen Deficiency in Aging Males(ADAM) questionnaire, serum total testosterone level, as well as prevalence of MS components between the two groups. Results: The overall prevalence of MS was 48% among LOH patients. The average age of group I and II were 57.7±10.5 and 58.6±11.2 years, respectively. Positivity for ADAM questionnaire was 83.3% in group I and 76.9% in group II, respectively(p<0.05). Serum total testosterone level decreased according to number of components of MS(p<0.05). The obesity group had significantly decreased serum total testosterone level(3.41±1.34 ng/ml) comparing to control group(4.41±2.23 ng/ml)(p<0.05). Conclusions: MS and its risk factors were significantly associated with LOH symptoms and positively correlated with the severity of disease. The evaluation of MS are required for the diagnosis and treatment of the patients with LOH.