Chung Hwa University of Medical Technology
Tainan, Taiwan
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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.

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.

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.

Chuang Y.-H.,Taipei Medical University | Tsao C.-W.,Chung Hwa University of Medical Technology
Computers and Education | Year: 2013

The aim of this study was to evaluate the effectiveness of using mobile phone short message service (SMS) to enhance knowledge of medications among nursing students. A quasi-experimental design was used. A convenience sample of 111 nursing students who were taking a pharmacology course at a university in southern Taiwan received an invitation to participate. The intervention group received learning materials by SMS twice per day for 10 days. Data were collected from 52 students in the intervention group and 54 students in the comparison group at baseline and at one week, two weeks and four weeks after the intervention. A generalized estimating equation (GEE) was used to determine the effectiveness of the intervention. The findings show a statistically significant difference between the two groups over time in the medication knowledge score. The students in the intervention group reported an above-average satisfaction level with this learning method; students reporting higher levels of satisfaction with the intervention had higher scores on medication knowledge. These results indicate that providing learning materials by SMS can significantly enhance nursing students' medication knowledge. © 2012 Elsevier Ltd. All rights reserved.

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.

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.

Kuo Y.-M.,Chung Hwa University of Medical Technology
Journal of Hazardous Materials | Year: 2012

This study used a vitrification process (with good potential for commercialization) to recover valuable metals from Zn phosphating sludge. The involved vitrification process achieves two major goals: it transformed hazardous Zn phosphating sludge into inert slag and it concentrated Fe (83.5%) and Zn (92.8%) into ingot and fine particulate-phase material, respectively. The Fe content in the ingot was 278,000. mg/kg, making the ingot a potential raw material for iron making. The fine particulate-phase material (collected from flue gas) contained abundant Zn (544,000. mg/kg) in the form of ZnO. The content (67.7%) of ZnO was high, so it can be directly sold to refineries. The recovered coarse particulate-phase material, with insufficient amount of ZnO, can be recycled as a feeding material for Zn re-concentration. Therefore, the vitrification process can not only treat hazardous materials but also effectively recover valuable metals. © 2011 Elsevier B.V..

Lin S.-H.,Kaohsiung Armed Forces General Hospital | Shih Y.-W.,Chung Hwa University of Medical Technology
Molecular and Cellular Biochemistry | Year: 2014

Chalcones (benzylideneacetophenone) are cancer-preventive food components found in a human diet rich in fruits and vegetables. In this study, we first report the chemopreventive effect of chalcone in human gastric adenocarcinoma cell lines: AGS. The results showed that chalcone could inhibit the abilities of the adhesion, invasion, and migration by cell-matrix adhesion assay, Boyden chamber invasion/migration assay, and wound-healing assay. Molecular data showed that the effect of chalcone in AGS cells might be mediated via sustained inactivation of the phosphorylation of focal adhesion kinase (FAK) and c-Jun N-terminal kinase 1 and 2 (JNK1/2) signal involved in the downregulation of the expressions of matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9). Next, chalcone-treated AGS cells showed tremendous decrease in the phosphorylation and degradation of inhibitor of kappaBα (IκBα), the nuclear level of NF-κB, and the binding ability of NF-κB to NF-κB response element. Furthermore, treating FAK small interfering RNA (FAK siRNA) and specific inhibitor for JNK (SP600125) to AGS cells could reduce the phosphorylation of JNK1/2 and the activity of MMP-2 and MMP-9. Our results revealed that chalcone significantly inhibited the metastatic ability of AGS cells by reducing MMP-2 and MMP-9 expressions concomitantly with a marked reduction on cell invasion and migration through suppressing and JNK signaling pathways. We suggest that chalcone may offer the application in clinical medicine. © 2014 Springer Science+Business Media.

Yeh J.-Y.,Chung Hwa University of Medical Technology
Procedia Engineering | Year: 2014

Vibration characteristics of orthotropic rectangular sandwich plate with magnetorheological (MR) elastomer core and constraining layer is presented in this study. In order to improve the vibrational behaviors of the system, the orthotropic rectangular plate is covered a MR fluid core and a constraining layer. Finite element method is adopted to derive the finite element equations of motion for the orthotropic sandwich system. The effects of the natural frequencies and loss factors of the orthotropic sandwich plate are discussed. The rheological property of the MR material can be changed and controlled by applying various magnetic fields. The modal dampings and the natural frequencies for the orthotropic sandwich plate are calculated for various magnetic fields. Besides, the effects of the strength ratio of the base plate on the natural frequencies and modal loss factors are also discussed. © 2014 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

Yeh J.-Y.,Chung Hwa University of Medical Technology
Aerospace Science and Technology | Year: 2011

The vibration and damping characteristics analysis of the orthotropic cylindrical shells with an electrorheological (ER) layer and a constraining layer are studied and discussed in this paper. An analytical model is developed and the discrete finite element method is adopted to investigate the vibration and damping characteristics of the sandwich orthotropic cylindrical shell system. And, the rheological properties of the ER material can be changed and controlled by applying various electric fields. In this study, the effects of thickness of the ER layer, constraining layer, applied electric fields on the vibration and damping characteristics of the sandwich cylindrical shell system are also discussed and found to affect the stiffness of the system and change the vibration and damping characteristics. It is seen that the larger applied electric fields, thickness of the constraining layer, and parameter Ẽ1 have larger natural frequency and smaller modal loss factor, respectively. On the contrary, the smaller natural frequency and modal loss factor will be also obtained with the increments of the thickness of ER layer. © 2010 Elsevier Masson SAS. All rights reserved.

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