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Yeh J.-Y.,Chung Hwa University of Medical Technology
Smart Materials and Structures | Year: 2013

In this study, the vibration analysis of sandwich rectangular plates with magnetorheological (MR) elastomer damping treatment is presented. The rectangular plate is combined with a magnetorheological elastomer core layer and a constraining layer to improve the vibration behaviors of the sandwich system. The MR material shows variations in the rheological properties when subjected to varying magnetic fields. Additionally, the MR material exhibits a rapid time response and is applicable to structures or devices when a tunable system is required. The magnetorheological elastomer is found to have a significant effect on the vibration characteristics of the sandwich rectangular plate. The modal damper and the natural frequencies for the sandwich plate system are calculated for various magnetic fields and some designed parameters by utilizing the finite element method. The damping effects of the sandwich plate system can be controlled and changed when different magnetic field strengths are applied. © 2013 IOP Publishing Ltd. Source

Kuo T.,Chung Hwa University of Medical Technology | Tang H.-L.,Eastern Michigan University
Computers in Human Behavior | Year: 2014

With 1.11 billion active users worldwide, Facebook usages may have some impacts on our social lives. The purpose of this research is to investigate possible relationships among personality traits, Facebook usages, and leisure activities. Three hypotheses were proposed: users with different personality traits may have different Facebook usages, users with different personality traits may have different leisure activities, and users with different Facebook usages may have different leisure activities. A questionnaire with 30 items was developed and the convenient sampling technique was used to collect data from 500 college students in Taiwan. Statistics methods such as descriptive statistics, independent t tests, ANOVA were used to analyze the data with a statistical significance of p <.05. The hypotheses were partially supported. Participants with high extraversion, low agreeableness and high openness tended to spend more times on Facebook and have more number of friends and photos. The findings confirmed that high extraversion and high openness people liked to socialize on Facebook (more time, more friends, more photos) also liked to socialize in real life (more time on team sports and recreational activities), but low agreeableness and low emotional stability people liked to use Facebook for socializing in lieu of real life socializing. © 2013 Elsevier Ltd. All rights reserved. Source

Ho S.-H.,National Cheng Kung University | Lu W.-B.,Chung Hwa University of Medical Technology | Chang J.-S.,National Cheng Kung University
Bioresource Technology | Year: 2012

Statistical experimental design and bioreactor strategies were applied to enhance CO 2 fixation ability of microalga Scenedesmus obliquus CNW-N. Four operating parameters strongly influencing microalgal CO 2 fixation efficiency (namely, CO 2 concentration, CO 2 flow rate, magnesium concentration, and light intensity) were optimized with response surface methodology. The optimal range of parameters achieving the best overall performance of specific growth rate and CO 2 fixation rate was determined with overlay counter plot techniques. Optimal ranges of CO 2 concentration, CO 2 flow rate, magnesium concentration and light intensity were 2.0-2.5%, 0.3-0.5vvm, 1.7-2.7mM and 180-250μmolm -2s -1, respectively, achieving a specific growth rate of >1.22d -1 and CO 2 fixation rate of >800mgL -1d -1. Semi-batch operations further enhanced the biomass productivity, photosynthesis efficiency, and CO 2 fixation rate to 1030mgL -1d -1, 10.5%, and 1782mgL -1d -1, respectively. This performance is better than the results reported by most related studies. © 2011 Elsevier Ltd. Source

Chao H.,Chung Hwa University of Medical Technology
The Diabetes educator | Year: 2012

The purpose of this study was to investigate relationships between body image, health beliefs, and health behavior in patients with diabetes classified according to body mass index (BMI). A cross-sectional study was conducted in a community hospital between January and April 2010. One-hundred-sixty-eight patients with diabetes were enrolled. Main measure was the previously published and validated Health Belief Questionnaire. Data were analyzed and compared between two groups, one with BMI ≥ 24 Kg/m(2) and another with BMI < 24 Kg/m(2). Perceived body image affected health behavior of patients with BMI ≥ 24 Kg/m(2) but did not affect health behavior in patients with BMI < 24 Kg/m(2). Multivariate analysis found a positive association between health behavior and appearance evaluation and between health behavior and health evaluation in high BMI group. No significant association was found between body image and health behavior in the low BMI group. Patients with high BMI had lower body image than patients with low BMI as demonstrated by results of appearance evaluation, health evaluation, prevention behavior, and benefits. Perceived body image and health beliefs are associated with self-reported health behavior among patients with diabetes with BMI measurement greater than 24 Kg/m(2). Diabetes educators may apply the findings of this study and the Health Belief Questionnaire to instruct and monitor patients with diabetes about self management behaviors. Source

Chien M.-H.,Chung Hwa University of Medical Technology | Guo H.-R.,National Cheng Kung University
PLoS ONE | Year: 2014

Background: Falls are common in older people and may lead to functional decline, disability, and death. Many risk factors have been identified, but studies evaluating effects of nutritional status are limited. To determine whether nutritional status is a predictor of falls in older people living in the community, we analyzed data collected through the Survey of Health and Living Status of the Elderly in Taiwan (SHLSET). Methods: SHLSET include a series of interview surveys conducted by the government on a random sample of people living in community dwellings in the nation. We included participants who received nutritional status assessment using the Mini Nutritional Assessment Taiwan Version 2 (MNA-T2) in the 1999 survey when they were 53 years or older and followed up on the cumulative incidence of falls in the one-year period before the interview in the 2003 survey. Results: At the beginning of follow-up, the 4440 participants had a mean age of 69.5 (standard deviation = 9.1) years, and 467 participants were "not well-nourished," which was defined as having an MNA-T2 score of 23 or less. In the one-year study period, 659 participants reported having at least one fall. After adjusting for other risk factors, we found the associated odds ratio for falls was 1.73 (95% confidence interval, 1.23, 2.42) for "not well-nourished," 1.57 (1.30, 1.90) for female gender, 1.03 (1.02, 1.04) for one-year older, 1.55 (1.22, 1.98) for history of falls, 1.34 (1.05, 1.72) for hospital stay during the past 12 months, 1.66 (1.07, 2.58) for difficulties in activities of daily living, and 1.53 (1.23, 1.91) for difficulties in instrumental activities of daily living. Conclusion: Nutritional status is an independent predictor of falls in older people living in the community. Further studies are warranted to identify nutritional interventions that can help prevent falls in the elderly. © 2014 Chien, Guo. Source

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