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Factors Associated With Screen Time Among School-Age Children in Korea
Ham, Ok Kyung,Sung, Kyung Mi,Kim, Hee Kyung SAGE Publications 2013 The Journal of school nursing Vol.29 No.6
<P>The purpose of this study was to investigate the association of sociodemographic, psychosocial, and behavioral characteristics with screen time among school-age children in Korea. This study employed a nonexperimental, cross-sectional study design. A total of 370 children attending four elementary schools participated in the study. Self-report method was used, and instruments included screen time (time spent on TV/video/computer/video games), sleep duration, eating behavior, pros and cons of exercise, and exercise self-efficacy. According to the results, 45.7% of the children had screen time of 1–2.9 hr/day and 8.9% had 3 or more hr/day. Increased screen time showed an association with gender (boy), higher body mass index, fast food consumption, higher cons of exercise, having a working mother, and attendance at a school in an inner city area (<I>p</I> < .05). Understanding the factors associated with screen time may provide useful information in the development of health promotion programs aimed at decreasing sedentary behaviors.</P>
Anti-obesity and anti-hepatosteatosis effects of dietary scopoletin in high-fat diet fed mice
Ham, Ju Ri,Lee, Hae-In,Choi, Ra-Yeong,Sim, Mi-Ok,Choi, Myung-Sook,Kwon, Eun-Young,Yun, Kyeong Won,Kim, Myung-Joo,Lee, Mi-Kyung Elsevier 2016 Journal of Functional Foods Vol.25 No.-
<P><B>Abstract</B></P> <P>The effects of scopoletin on non-alcoholic fatty liver in obese mice were investigated. Mice were fed high-fat diet (HF) with or without two doses of scopoletin (0.01 and 0.05%, w/w) for 16 weeks. Both doses of scopoletin led to similar reductions in body weight, visceral fat, serum levels of leptin, lipid, TNFα, IL-6, IFNγ and MCP-1, insulin resistance and hepatic lipid accumulation, whereas they increased serum adiponectin and faecal lipid levels. Ingenuity pathway analysis revealed that hepatic gene networks related to lipid concentrations, inflammation of organs, quantity of adipose tissue, proliferation of cell and necrosis were down-regulated in the scopoletin group. The top up- or down-regulated genes were <I>Cidea</I>, <I>Apoa4</I>, <I>Cyp7a1</I>, <I>Errfi1</I>, <I>Col1a1</I>, <I>Mmp13</I>, <I>Cdkn1a</I>, <I>Gdf15</I> and <I>Saa1</I>, which emerged as associated genes related to hepatic steatosis and inflammation. These results indicate that scopoletin may ameliorate HF-induced hepatic dysfunction via regulation of lipid metabolic and inflammatory genes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Scopoletin attenuates non-alcoholic fatty liver disease in high-fat diet fed mice. </LI> <LI> Scopoletin identified 3 gene networks related to lipid metabolism and inflammation. </LI> <LI> Target genes of lipid metabolism are <I>Cidea</I>, <I>Apoa4</I>, <I>Cyp7a1</I> and <I>Errfi1</I>. </LI> <LI> Target genes of inflammation are <I>Col1a1</I>, <I>Mmp13</I>, <I>Cdkn1a</I> and <I>Saa1.</I> </LI> </UL> </P>
대기행렬 모형을 활용한 시공단계 BIM 코디네이터 업무 성과 분석
함남혁(Ham, Nam-Hyuk),여옥경(Yuh, Ok-Kyung),지규현(Ji, Kyu-Hyun) 한국BIM학회 2018 KIBIM Magazine Vol.8 No.3
This study focuses on the BIM request for information(RFI) processing performance and quantitatively analyzes the performance of the BIM coordinator and the loss due to the waiting of the project participants. For these purposes, a method to quantitatively evaluate the performance of the BIM coordinator was proposed using a queueing model. For the verification, two projects in which BIM was applied in the construction phase were selected, and the BIM RFI data were collected through the analysis of the BIM monthly report and BIM coordinator work log of each project. In addition, the BIM input personnel, labor cost, and productivity data were collected through interviews with the experts of the case projects. The analysis of the BIM RFI processing performance of the BIM coordinator using the queueing model exhibited on a probabilistic basis that the waiting status of the project participants could vary depending on the preliminary BIM application to the design verification as well as the input number and level of the BIM coordinator personnel. In addition, the loss cost due to the waiting of the project participants was analyzed using the number of BIM RFIs waiting to be processed in the queueing system. Finally, the economic feasibility analysis for the optimal BIM coordinator input was performed considering the loss cost. The results of this study can be used to make decisions about the optimal BIM coordinator input and can provide grounds for the BIM return on investment (ROI) analysis considering the waiting cost of the project participants.