• Asian Pacific Journal of Cancer Prevention
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• 제14권3호
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• pp.1691-1695
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• 2013

Objective: To evaluate the association between tea consumption and the risk of renal cell carcinoma. Methods: We searched PubMed, Web of Science and Scopus between 1970 and November 2012. Two evaluators independently reviewed and selected articles based on predetermined selection criteria. Results: Twelve epidemiological studies (ten case-control studies and two cohort studies) were included in the final analysis. In a meta-analysis of all included studies, when compared with the lowest level of tea consumption, the overall relative risk (RR) of renal cell carcinoma for the highest level of tea consumption was 1.03 (95% confidence interval [CI] 0.89-1.21). In subgroup meta-analyses by study design, there was no significant association between tea consumption and renal cell carcinoma risk in ten case-control studies using adjusted data (RR=1.08, 95% CI 0.84-1.40). Furthermore, there was no significant association in two cohort studies using adjusted data (RR=0.95, 95% CI 0.81-1.12). Conclusion: Our findings do not support the conclusion that tea consumption is related to decreased risk of renal cell carcinoma. Further prospective cohort studies are required.

• 한국조경학회지
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• 제26권4호
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• pp.113-124
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• 1999

The purpose of this study is to search into the relation between the chinese seclusion culture and the gentleman's gardens by means of the historical and aesthetic approach. The periodic limits of this study is from pre-Qin to Tand. For gentleman's gardens in Tang dynasty at once got out of the noble's gardens which had imitated the imperial gardens until Tang, and became the origin of the gardens of the literati appearing in post-Tang dynasty. The major findings are as follows : First, in pre-Qin period, the origin of the seclusion culture is classified as the metaphysical seclusion of Taoism and the physical seclusion of Confucianism. Although Pu, Yuan, and Uou which could be said the first step of the chinese gardens were inquired, the clear relation between the seclusion and them is not found. Second, during Qin-Han dynasty, the role of the gardens, as the settings of the seclusion, are comparatively minor, too. But uan Kuang-Han's garden considerably escaped from that of pre-Qin in the aspect of function, and it has the characteristics of recreation. Third, during Wei-Chin and Liu dynasty, two types of the seclusions emerged. One is the small seclusion, and the other the Great Seclusion. Though, as formerly, the contemporary gardens did not escaped from the imperial gardens, Shi Chong's garden can be the setting of the Court Seclusion. But the seven Righteous in Bamboos' and Tao Yuan-Ming's settings of the seclusion were real natural environments rather than gardens. Forth, in Tang dynasty, in spite of relatively low status, Bai Ju-Yi's theory of the middle Seclusion enabled gentlemen to make seclusion in sinecures unlike the court Seclusion. The theoretical background of the Middle Seclusion was Zen Buddhism and the State Examinations System and Bai Ju-Yi's private social position also had an important effect on it. In Tang dynasty, there being nobiliary gentleman's gardens, Bai Ju-Yi's garden, Lushan Caotangyuan, was the setting of the Middle Seclusion. It can be called a real gentleman's garden, for it is simple and small unlike the imperial gardens or the nobiliary gentleman's gardens.

• 동양고전연구
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• 제63호
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• pp.141-168
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• 2016

본 연구는 "대학장구", "대학혹문", 그리고 "주자어류"의 '대학혹문어류'를 중심으로, 선배 학자들의 격물치지설에 대한 주희의 비판적 이해를 고찰하였다. 주희는 "대학혹문"과 '대학혹문어류'에서 사마광, 정이의 제자(여대림, 사량좌, 양시, 윤돈), 호상학자(호안국, 호굉), 이동의 격물치지설을 비교적 자세히 서술하고, 이를 비판적으로 이해하면서 정이의 격물치지설을 토대로 자기 학설을 체계화 하였다. 이처럼 주희는 선배 유학자들의 격물치지설을 비판하면서, 외물에 대한 강한 긍정을 토대로 외물에 대한 이치의 누적을 통해 마침내 하나로 관통하는 방법이 격물치지의 핵심임을 주장하였다. '격물보전장'과 관련한 주희의 이러한 기획은 주희 자신이 입론한 격물치지의 의미가 결국 정이의 격물치지설과 부합하며 유학 전통에 확고히 기반하고 있음을 보여주고 있다.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2005년도 춘계학술대회
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• pp.155-163
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• 2005

This paper applies Support Vector Regression (SVR) to estimate and forecast nonlinear autoregressive integrated (ARI) model of the daily exchange rates of four currencies (Swiss Francs, Indian Rupees, South Korean Won and Philippines Pesos) against U.S. dollar. The forecasting abilities of SVR are compared with linear ARI model which is estimated by OLS. Sensitivity of SVR results are also examined to kernel type and other free parameters. Empirical findings are in favor of SVR. SVR method forecasts exchange rate level better than linear ARI model and also has superior ability in forecasting the exchange rates direction in short test phase but has similar performance with OLS when forecasting the turning points in long test phase.

• Journal of applied mathematics & informatics
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• 제29권5_6호
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• pp.1501-1509
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• 2011

In this study, assume that the stock price obeys the stochastic differential equation driven by mixed fractional Brownian motion, and the short rate follows the Vasicek model. Then, the Black-Scholes partial differential equation is held by using fractional Ito formula. Finally, the pricing formulae of the barrier option are obtained by partial differential equation theory. The results of Black-Scholes model are generalized.

• 한국수학사학회지
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• 제32권6호
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• pp.301-313
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• 2019

This paper briefly examines the Book of Changes that is the philosophical background of East Asian ancient mathematics and its collection of complementary(ShíYì), and then examines the structure and contents of GyeSaJeon, which explains the basic principles of Book of Changes as one of ShíYì. GyesaJeon reveals the unique East Asian thought of dealing with numbers in the process of explaining the formation of Eight-Gwae(Bagua) and Sixty-four-Gwae based on Yin-Yang theory. It understands numbers in terms of symbols, not quantitative, and use them to represent characteristics or hierarchy of certain classes, and to explain certain principles. Based on this, the implications of using East Asian mathematics history in the mathematics classroom are discussed.

• 한국수학사학회지
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• 제33권2호
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• pp.103-114
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• 2020

In 1607, Matteo Ricci and Xu Guangqi translated Euclid's 《Elements》 and published 《Jihe yuanben, 幾何原本》. Though 《Elements》 consists of 13 volumes (or 15 volumes according to its editions), they translated only the first 6 volumes on the plane geometry. Why did they do so? This paper discusses about the three questions which naturally arise: What might be the motive of the translation of the 《Elements》? What method did they adopt for the translation? And why did they translate the 6 volumes, especially, the first 6 volumes, not completing the whole?

• Asian Pacific Journal of Cancer Prevention
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• 제15권1호
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• pp.335-341
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• 2014

Cancer is a menace fast gaining momentum in Nigeria and other developing countries. It is an expensive disease requiring a major financial and human resources for prevention, diagnosis and treatment. With no national policy on cancer control in the conntry, incidence (111.7/100,000 population) and mortality (86.6/100,000) rates in Nigeria are spiraling beyond control. This literature search study was primarily aimed at providing recommendations on cost-effective strategies for development interventions to promote self-management for cancer survivors in Nigeria with a goal to improve quality of life and overall survival.

• Smart Structures and Systems
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• 제13권1호
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• pp.41-53
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• 2014

Optical fiber Brillouin sensor in a coil winding setup is proposed in this paper to measure the expansion deformation of a concrete column with a central rebar subjected to accelerated corrosion. The optical sensor monitored the whole dynamic corrosion process from initial deformation to final cracking. Experimental results show that Brillouin Optical Time Domain Reflectometer (BOTDR) can accurately measure the strain values and identify the crack locations of the simulated reinforced concrete (RC) column. A theoretical model is used to calculate the RC corrosion expansive pressure and crack length. The results indicate that the measured strain and cracking history revealed the development of the steel bar corrosion inside the simulated RC column.

• 전자공학회논문지A
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• 제29A권4호
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• pp.49-57
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• 1992

Tungsten film was deposited on the TiN surface in a low pressure chemical vapor deposition reactor and chemical reaction mechanism between TiN surface and ($WF_{6}\;and\;SiH_{4}$ was studied. Interaction of ($WF_{6}\;or\;SiH_{4}$ with TiN surface and tungsten was deposited more easily. $WF_6$ reacted with TiN activated the TiN surface to form volatile TiF_4$ and tungsten nuclei were formed. ($SiH_{4}$ was dissociated on the TiN surface to form silicon nuclei. From RBS and AES analysis, we could not detect the impurities(such as Si or TiF$_x$)at the interface between tungsten and TiN. The adhesion at the W/TiN interface became poor when the deposition temperature was below 275$^{\circ}C$.