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Now showing items 1 - 16 of 75

  • Translating Research Findings Into Practice

    Yeh, Mei-Ling  

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  • Translating Research Findings Into Practice

    Yeh, Mei-Ling  

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  • Validation of the Clinical COPD Questionnaire in Taiwan

    Lin, Wei-Chun   Huang, Tsuey-Yuan   Liu, Chieh-Yu   Yeh, Mei-Ling   Yu, Chia-Hui   Hwang, Shiow-Li  

    Health status improvement is a critical treatment goal for physicians managing chronic obstructive pulmonary disease (COPD). Numerous instruments to measure the disease-specific health-related quality of life (HRQOL) for patients with COPD have been used in daily clinical practice. The Clinical COPD Questionnaire (CCQ) is one of these recommended by the Global Initiative for Chronic Obstructive Lung Disease (GOLD). This study examined the psychometric properties of the CCQ in patients with COPD in Taiwan. A descriptive, cross-sectional design was conducted. Data were collected in a secondary care unit. We administered the CCQ, the modified Medical Research Council (mMRC) dyspnea scale, and the 12-item Short Form Health Survey (SF-12) for patients with COPD. Reliability was assessed using Cronbach's alpha and item-total correlation coefficients. Construct validity was assessed using confirmatory factor analysis (CFA) and testing the hypothesis that severity of dyspnea measured using the mMRC dyspnea scale is associated with the CCQ scores. Convergent validity was assessed by testing the correlation between the CCQ and the SF-12. Discriminant validity was assessed to differentiate among the classifications of COPD Groups A to D. A total of 114 subjects were recruited in the study. Cronbach's alpha was high (0.90) for the total score of the CCQ. Significant correlations were found between the CCQ scores and those of the mMRC dyspnea scale (rho =3D 0.67) and domains of the SF-12 (rho=3D-0.44 to -0.75). Furthermore, the CCQ scores showed a significant difference among the classifications of COPD Groups A to D. CFA confirmed the construct validity, with a good model fit. Good to excellent psychometric properties of the Chinese Version CCQ were demonstrated in the study. Wide usage of the Chinese Version CCQ for Taiwanese COPD patients can be recommended in daily clinical practice or clinical trials.
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  • A LOW-PHASE-NOISE CMOS VCO FOR K-BAND APPLICATION

    YEH, MEI-LING   LIN, YAO-CHIAN   CHANG, CHUNG-CHENG  

    A new high figure-of-merit (FOM) and low-phase-noise 20.73-GHz voltage-controlled oscillator is designed for K-band applications in this paper. The capacitive feedback technique is used for the low-phase-noise VCO design. The VCO can be tuned from 20.817 GHz to 20.266 GHz. The measured phase noise is -115.57 dBc/Hz at 1 MHz offset from the carrier frequency. The corresponding FOM is calculated to be -190 dBc/Hz. The VCO is implemented with the TSMC 0.18 mum one-poly-six-metal 1.7 V mixed-signal/RF CMOS technology, and the chip size is 0.51 times 0.74 mm 2.
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  • A LOW-PHASE-NOISE CMOS VCO FOR K-BAND APPLICATION

    Yeh, Mei-Ling   Lin, Yao-Chian   Chang, Chung-Cheng  

    A new high figure-of-merit (FOM) and low-phase-noise 20.73-GHz voltage-controlled oscillator is designed for K-band applications in this paper. The capacitive feedback technique is used for the low-phase-noise VCO design. The VCO can be tuned from 20.817 GHz to 20.266 GHz. The measured phase noise is -115.57 dBc/Hz at 1 MHz offset from the carrier frequency. The corresponding FOM is calculated to be -190 dBc/Hz. The VCO is implemented with the TSMC 0.18 mu m one-poly-six-metal 1.7V mixed-signal/RF CMOS technology, and the chip size is 0.51 x 0.74 mm(2).
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  • EDITOR'S REMARK

    Yeh, Mei-Ling  

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  • A low-phase noise and wide-tuning range CMOS voltage controlled oscillator

    Lin, Yao-Chian   Yeh, Mei-Ling  

    A wide-tuning range and ultra-low-phase-noise 4.28-GHz voltage controlled oscillator (VCO) is designed in this article. The VCO implemented with the TSMC 0.18 mu m 1P6M CMOS technology uses NMOSs only. Source capacitive degeneration technique is used to increase the frequency tuning range. The proposed VCO can have an 18.94% tuning range from 3.53 to 4.34 GHz. The measured phase noise is -131.2 dBc/Hz at 1-MHz offset from the 4.28 GHz. The corresponding figure-of-merit (FOM) and FOMT are calculated to be -191.6 and -197.15 dBc/Hz, respectively. The chip size is 0.571 x 0.822 mm2. The core circuit consumes 16.5-mW and 1.3-V power supply. (C) 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:19411944, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26950
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  • Use of Traditional Medicine and Complementary and Alternative Medicine in Taiwan

    Yeh, Mei-Ling   Lin, Kuan-Chia   Chen, Hsing-Hsia   Wang, Yu-Jen   Huang, Yu-Chiao  

    As the selection of a medical modality is not completely independent, environmental and sociocultural contexts of ecological validity are desired. This study aimed to apply a multilevel analysis using the Hierarchical Linear Modeling software to examine predictors of traditional medicine (TM)/complementary and alternative medicine (CAM) use in Taiwan on both individual and division levels. Individual-level data were obtained from the government database involving TM/CAM use and its impact on the population, whereas division-level data were obtained from a government annual report. A total of 2310 individuals from 22 administrative divisions of Taiwan were evaluated in the data analysis, of which 86.9% had used at least 1 TM/CAM modality in the past year. The average division of TM/CAM use was 2.86 modalities in the null model and 4.15 in the full model. Significant relationships were found between TM/CAM use and individual-level variables of gender, educational level, monthly income, perceived health status, experience with Western medical treatment, and the cost, effect, and degree of satisfaction with TM/CAM. At the division level, TM/CAM use was significantly related to aging population, employment status, and the number of medical institutions. With a simultaneous evaluation of the individual-level and division-level influences, it was found that the average division of TM/CAM use increased significantly. The place of residence is an important predictor of TM/CAM use. The age factor in predicting TM/CAM use in this study may be overestimated in the population of 26 to 60 years of age, whereas an aging population is important in the average division of TM/CAM use. Efforts to reform health insurance to completely cover the costs of TM/CAM and to better facilitate equality of access of health care in rural and remote areas are deemed necessary.
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  • Use of Traditional Medicine and Complementary and Alternative Medicine in Taiwan

    Yeh, Mei-Ling   Lin, Kuan-Chia   Chen, Hsing-Hsia   Wang, Yu-Jen   Huang, Yu-Chiao  

    As the selection of a medical modality is not completely independent, environmental and sociocultural contexts of ecological validity are desired. This study aimed to apply a multilevel analysis using the Hierarchical Linear Modeling software to examine predictors of traditional medicine (TM)/complementary and alternative medicine (CAM) use in Taiwan on both individual and division levels. Individual-level data were obtained from the government database involving TM/CAM use and its impact on the population, whereas division-level data were obtained from a government annual report. A total of 2310 individuals from 22 administrative divisions of Taiwan were evaluated in the data analysis, of which 86.9% had used at least 1 TM/CAM modality in the past year. The average division of TM/CAM use was 2.86 modalities in the null model and 4.15 in the full model. Significant relationships were found between TM/CAM use and individual-level variables of gender, educational level, monthly income, perceived health status, experience with Western medical treatment, and the cost, effect, and degree of satisfaction with TM/CAM. At the division level, TM/CAM use was significantly related to aging population, employment status, and the number of medical institutions. With a simultaneous evaluation of the individual-level and division-level influences, it was found that the average division of TM/CAM use increased significantly. The place of residence is an important predictor of TM/CAM use. The age factor in predicting TM/CAM use in this study may be overestimated in the population of 26 to 60 years of age, whereas an aging population is important in the average division of TM/CAM use. Efforts to reform health insurance to completely cover the costs of TM/CAM and to better facilitate equality of access of health care in rural and remote areas are deemed necessary.
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  • The use of information technology to enhance patient safety and nursing efficiency

    Lee, Tso-Ying   Sun, Gi-Tseng   Kou, Li-Tseng   Yeh, Mei-Ling  

    BACKGROUND: Issues in patient safety and nursing efficiency have long been of concern. Advancing the role of nursing informatics is seen as the best way to address this. OBJECTIVES: The aim of this study was to determine if the use, outcomes and satisfaction with a nursing information system (NIS) improved patient safety and the quality of nursing care in a hospital in Taiwan. METHOD: This study adopts a quasi-experimental design. Nurses and patients were surveyed by questionnaire and data retrieval before and after the implementation of NIS in terms of blood drawing, nursing process, drug administration, bar code scanning, shift handover, and information and communication integration. RESULTS: Physiologic values were easier to read and interpret; it took less time to complete electronic records (3.7 vs. 9.1 min); the number of errors in drug administration was reduced (0.08% vs. 0.39%); bar codes reduced the number of errors in blood drawing (0 vs. 10) and transportation of specimens (0 vs. 0.42%); satisfaction with electronic shift handover increased significantly; there was a reduction in nursing turnover (14.9% vs. 16%); patient satisfaction increased significantly (3.46 vs. 3.34). CONCLUSIONS: Introduction of NIS improved patient safety and nursing efficiency and increased nurse and patient satisfaction. Medical organizations must continually improve the nursing information system if they are to provide patients with high quality service in a competitive environment.
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  • A Six-Week Acupoint Stimulation Intervention for Quitting Smoking

    Yeh, Mei-Ling   Chang, Chiu-Yuan   Chu, Nain-Feng   Chen, Hsing-Hsia  

    This study creates a six-week acupoint stimulation program for quitting smoking by conducting an experimental research design and then evaluating its effects. A total of 59 smokers, 28 +/- 7.6 years of mean age, volunteered to participate and were randomly assigned to the experimental or sham group. The current investigation administered anti-smoking acupoints to the experimental group for six weeks, whereas the sham group used sham acupoints for six weeks. Before and after the six-week intervention, the participants completed questionnaires and offered blood samples. This research collected data of demographic factors, serum cotinine, carbon monoxide exhalation, daily tobacco consumption, and quit smoking rate of participants before and after the six-week intervention. After the intervention, it showed no significant differences in the serum level of cotinine and carbon monoxide exhalation between the two groups. The quit rate in the experimental group was 13.3% and 13.7% in the sham group. However, daily tobacco consumption was 10 cigarettes in the experimental group and 11.21 cigarettes in the sham group. This experimental study used the sham group as the control, resulting in no statistically significant findings. Future studies need more evidence-based research on the exact effect or placebo effect of acupoint stimulation and the appropriate design for sham acupoint, to examine quitting effect using acupoint stimulation in adult smokers.
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  • Qigong Improving Physical Status in Middle-Aged Women

    Tsai, Yi-Kuei   Chen, Hsing-Hsia   Lin, I-Hsin   Yeh, Mei-Ling  

    Regular exercise has been shown to benefit its practitioners and prevent and control diseases. Muscle/Tendon Change Classic (MTCC) qigong, characterized by simple, slow, and full-body exercise, is appropriate for the middle-age population. This study aims to evaluate the effect of the MTCC qigong program in improving physical status for middle-aged women. A quasi-experimental design was used. The experimental group (n = 37) received an 8-week MTCC qigong program, whereas the control group ( n = 34) received none. Physiological parameters of muscular performance, body composition, and bone strength were measured before and after the program. The average age was 49 +/- 4.13 years for the experimental group and 50 +/- 4.74 years for the control group. The demographic characteristics were homogeneous between the two groups. There were statistically significant differences between the two groups in muscular endurance, body fat, waist-to-hip ratio, and body mass index at the completion of 8-week MTCC qigong program. The MTCC qigong could improve muscle endurance and body composition but not bone strength for middle-aged women, thereby demonstrating the qigong practice has certain health-preserving effects on women in this stage of life.
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  • A high efficiency dual-mode buck converter IC for portable applications

    Liou, Wan-Rone   Yeh, Mei-Ling   Kuo, Yueh Lung  

    This paper presents the design of a novel wide output current range dual-mode dc to dc step-down (Buck) switching regulator/converter. The converter can adaptively switch between pulsewidth modulation (PWM) and pulse-frequency modulation (PFM) both with very high conversion efficiency. Under light load condition the converter enters PFM mode. The function of closing internal idle circuits is implemented to save unnecessary switching losses. The converter can be switched to PWM mode when the load current is greater than 100 mA. Soft start operation is designed to eliminate the excess large current at the start up of the regulator. The chip has been fabricated with a TSMC 2P4M 0.35 mu m polycide CMOS process. The range of the operation voltage is from 2.7 to 5 V, which is suitable for single-cell lithium-ion battery supply applications. The maximum conversion efficiency is 95 % at 50 mA load current. Above 85 % conversion efficiency can be reached for load current from 3 to 460 mA.
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  • Acupoint stimulation to improve analgesia quality for lumbar spine surgical patients.

    Chung, Yu-Chu   Chien, Hui-Ching   Chen, Hsing-Hsia   Yeh, Mei-Ling  

    Lumbar spine surgery has a high incidence of postoperative pain, but this pain is treatable through many methods, including patient-controlled analgesia (PCA). Acupoint stimulation could be considered an adjunct to PCA, improving the effectiveness of analgesia for patients recovering from lumbar spine surgery. The current study aimed to examine the effect of acupoint stimulation with PCA on improving analgesia quality after lumbar spine surgery. A single-blinded, sham-controlled design was used for the experimental, not control, groups. Data collection for the control group was completed first, followed by data collection for the other 2 groups. Participants were randomly assigned to the acupoint stimulation (AS) (n =3D 45) or sham group (n=3D45). All participants received structural PCA multimedia information before lumbar surgery. The AS group received auricular acupressure combined with transcutaneuos electric acupoint stimulation (TEAS) at the true acupoint; the sham group received acupoint stimulation in the same manner but at a sham acupoint and without embedding seeds; and the control group received no acupoint stimulations. The analgesia quality, analgesic consumption, and postoperative nausea and vomiting (PONV) were used as measure of effects for the interventions. Significant differences were found between the AS and control groups in pain intensity but not in the belief and satisfaction subscales of analgesia quality. Also found a significant difference among the 3 groups in analgesic consumption and the severity of PONV in the first 72 hours after surgery. The current study shows that the combination of auricular acupressure and TEAS reduced pain intensity, morphine consumption, and PONV severity. Acupoint stimulation could be considered a multimodal analgesia method and an adjunct to PCA for lumbar spine surgery patients. Copyright =C2=A9 2014 American Society for Pain Management Nursing. Published by Elsevier Inc. All rights reserved.
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  • A Prospective Study of the Relationship between Psychological Factors and Breast Cancer

    Lee, Tso-Ying   Yeh, Mei-Ling  

    Objective: This cross-sectional prospective study aimed to explore the relationship between psychological factors and breast cancer incidence. Methods: The subjects who scheduled to receive mammography screening were recruited from a medical center's outpatient department in Taiwan. Psychological factors used for measurement were stress, anxiety, and depression. Results: A total of 1160 questionnaires were completed, which underwent statistical analysis using independent t-test, Chi-square test, Pearson's correlation, and multiple logistic regression. There were statistically significant differences in the average scores of the two groups with and without breast cancer for psychological factors of anxiety (t =3D -2.071; P =3D 0.039), depression (t =3D -3.035; P =3D 0.002), and stress (t =3D -4.087; P < 0.001). The crude odds ratio of the two groups showed that subjects with borderline anxiety were 2.576 times (P =3D 0.001) more likely to have breast cancer as compared to subjects with no anxiety. Subjects with depression were 4.078 times (P =3D 0.03) more likely to have breast cancer as compared to subjects with no depression. Every point added to the average total stress score increased the additional risk of breast cancer by 1.124 times (P < 0.001). Conclusions: After making adjustments on educational factors, the results conclude that psychological factors such as stress, anxiety, and depression can be considered predictors of breast cancer risk. To prevent and control breast cancer in women, the findings suggest that nurses should consider adding emphasis on psychological factors in women's health education.
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  • Acupoint Stimulation on Weight Reduction for Obesity:A Randomized Sham-Controlled Study

    Yeh, Mei-Ling   Chu, Nain-Feng   Hsu, Man-Ying F.   Hsu, Chin-Che   Chung, Yu-Chu  

    Auricular acupoint stimulation has become a popular weight loss method. However, its efficacy for obesity treatment has not been fully studied. This study aimed to investigate the effect of a 10-week intervention of auricular electrical stimulation combined with auricular acupressure on weight reduction in obese outpatients. In this single-blind randomized sham-controlled study, 134 participants were randomly assigned to an experimental group receiving stimulation at true acupoints, or a sham group receiving stimulation delivered in the same manner but at sham acupoints. Each participant received nutrition counseling by a nutritionist weekly. The results showed significant differences in body mass index, blood pressure, total cholesterol, triglyceride, and leptin or adiponectin over time within the group, but not between the groups. This study could not exclude the effect of placebo and dietary consultation. Further study that adds a control group receiving no treatment is therefore needed to confirm the effects of auricular acupressure.
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