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RISS 인기검색어
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- 저자 : Pingjian Ming (검색결과 3 건)
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Correspondence analysis for studying association between geography and cancer
송준진,Pingjian Yu,Yuan Ren,Ming-Hua Chung 한국데이터정보과학회 2009 한국데이터정보과학회지 Vol.20 No.5
Geographical location carries information such as demography, local economy, environment, and life styles, which could be the sources of cancer occurrence. Analyzing geographical location associated with cancer occurrence can be instructive to physicians, patients, and health administrators regarding resource allocation, expenditures, prophylaxis and treatments. In this paper, we explored the correspondence relationship between geographical locations and mortality rates of the cancers using correspondence analysis and illustrated the approach with the mortality rates of the top 10 cancers in the 75 counties in Arkansas from 2001 to 2005. Geographical variations with respect to the mortality rates of cancers are evaluated across Arkansas counties. Based on the contingency table, correspondence analysis model is developed and the simple indices which indicate the degree to which the regions and the cancers affect each other are calculated. Quantitative results are visualized and mapped in two-dimensional graphs.
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Numerical study of hydrodynamic and thermodynamic characteristics of a heat exchanger muffler
Meng Yuan,Pingjian Ming,Wenping Zhang 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.11
The hydrodynamic and thermodynamic characteristics of a heat exchanger muffler (HEM), which can reduce the size of a marine engine exhaust system with waste heat recovery, were investigated using a numerical simulation method that combines the porous media model and the dual cell heat exchanger model. The effect of the thermal conductivity and dynamic viscosity of the exhaust gas on the heat transfer and pressure loss of the equipment was studied. The relationship between the heat transfer and the pressure drop of the equipment for various mass flow rates of the exhaust gas was investigated. It is shown that heat transfer conditions of the HEM could be enhanced by increasing the thermal conductivity or dynamic viscosity of the exhaust gas. To further improve the performance of the HEM, a design modification for optimizing the structure of the guide blade was proposed and numerically validated.
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Correspondence analysis for studying association between geography and cancer
Song, Joon-Jin,Yu, Pingjian,Ren, Yuan,Chung, Ming-Hua The Korean Data and Information Science Society 2009 한국데이터정보과학회지 Vol.20 No.5
Geographical location carries information such as demography, local economy, environment, and life styles, which could be the sources of cancer occurrence. Analyzing geographical location associated with cancer occurrence can be instructive to physicians, patients, and health administrators regarding resource allocation, expenditures, prophylaxis and treatments. In this paper, we explored the correspondence relationship between geographical locations and mortality rates of the cancers using correspondence analysis and illustrated the approach with the mortality rates of the top 10 cancers in the 75 counties in Arkansas from 2001 to 2005. Geographical variations with respect to the mortality rates of cancers are evaluated across Arkansas counties. Based on the contingency table, correspondence analysis model is developed and the simple indices which indicate the degree to which the regions and the cancers affect each other are calculated. Quantitative results are visualized and mapped in two-dimensional graphs.
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