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Akiko Kamimura,Ha N. Trinh,Shannon Weaver,Alla Chernenko,Maziar M. Nourian,Nushean Assasnik,Hanh Nguyen 대한예방의학회 2017 Journal of Preventive Medicine and Public Health Vol.50 No.4
Objectives: Influenza is a significant worldwide public health issue. Knowledge and perceptions regarding the flu vaccination are associated with whether individuals obtain the vaccination. The purpose of this study was to examine how such perceptions were related to knowledge and self-efficacy regarding influenza and the flu vaccination in Vietnam and the US. Methods: College students (n=932) in Vietnam (n=495) and the US (n=437) completed a self-administered survey regarding knowledge and perceptions of influenza vaccinations in September and October 2016. Results: Vietnamese participants reported significantly lower levels of awareness about flu risk, higher levels of negative attitudes toward flu vaccination, lower levels of knowledge about the flu and vaccination, and lower levels of self-efficacy than US participants. Higher levels of flu and flu vaccination knowledge and self-efficacy regarding general responsible health practices were associated with lower levels of negative perceptions of flu risk and attitudes toward vaccination. At the same time, self-efficacy regarding responsible health practices was associated with higher levels of awareness of flu risk and lower levels of negative attitudes toward vaccination. Self-efficacy regarding exercise was associated with lower levels of perceptions of flu risk and higher levels of negative attitudes toward vaccination. Conclusions: Vietnam could benefit from influenza education based on this comparison with the US. In both countries, knowledge and self-efficacy were found to be important factors influencing perceptions of influenza risk and vaccination.
Akiko Kuwabara,Naoko Tsugawa,Hiroshi Kondo,Misora Ao,Hitomi Fujiwara,Natsuki Hosokawa,Shiho Matsumoto,Kiyoshi Tanaka,Tetsuo Nakano 대한골다공증학회 2017 Osteoporosis and Sarcopenia Vol.3 No.1
Objectives: One of the important risk factors of falling is decreased muscle mass and muscle strength. Recently, there has been an increasing concern on the role of vitamin D in muscle strength and physical activity. Aim of our study is to examine the relationships between vitamin D status and muscle mass and muscle strength in middle-aged healthy adults. Methods: Subjects were 40 healthy volunteers aged 42.0 ± 10.6 years old. Evaluation was made for serum vitamin D3 metabolites including 25- hydroxyvitamin D3 [25(OH)D3] and 24,25-dihydroxyvitamin D3 [24,25(OH)2D3] concentrations, lower limb muscle strength, and dietary intake by food frequency questionnaire. Body composition was measured by dual-energy X-ray absorptiometry (DXA), and appendicular skeletal mass index (ASMI) was calculated as skeletal muscle mass/squared height. Results: 70% of the subjects had vitamin D insufficiency/deficiency (serum total 25(OH)D < 20 ng/mL), and female subjects had significantly lower serum total 25(OH)D level compared with males. Vitamin D insufficiency/deficiency group had significantly higher body fat, lower SMI and muscle strength, probably reflecting higher percentage of female subjects. Serum vitamin D3 metabolites levels were significantly correlated with whole and site-specific ASMI, and lower limb muscle strength, except for the correlation between serum 24,25(OH)2D3 concentration and lower limb muscle strength. In addition, serum 25(OH)D3 level was a positive significant predictor for both ASMI and lower limb muscle strength, while serum 24,25(OH)2D3 level was not their significant predictor. Conclusions: Serum 25(OH)D3 level was significantly correlated with both skeletal muscle mass and lower limb muscle strength.
Akiko Takahashi,Ryuichi Oguro,Kenta Sakane 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
This paper presents a torque and rotational speed estimation method for Line-start Induction Motor Operated Valves. Routine inspections are carried out to those valves, because Motor Operated Valves are used in the serious plant such as Power plant. And securing reliability is an extreme important matter for these systems. Movement environments in these plants are high temperature and humidity, so it is difficult to put sensors near motors. In such a case, we must find the trouble of the system without torque sensor or speed sensor. The proposal method can estimate the torque and rotational speed of induction motor by using time-series data of voltages and currents at the switchboard. Furthermore, we propose the parameter identification method of mutual inductance by comparing the inner and outer products between voltages and currents. First, a torque and rotational speed of induction motor are estimated. Next, a mutual inductance parameter is got. Last, the proposed estimation method is verified by results of experiment.
A Method of Torque & Speed Estimation for Line-start IM with Electrical Parameter Identification
Akiko Takahashi,Ryuichi Oguro 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper presents a method for estimating the torque and speed of line-start induction motor (IM). IM is being used for various purposes because that is a high trust machine for the load mechanism and can be used easily.So, IM is non-breakable. However, load mechanism sometime break. We try to check the condition of load mechanism by estimate the torque and speed of IM. We take up the motor-operated valve for load mechanism. Motor-operated valve is driven by line-start IM. Movement environment of IM is characterized by high temperature and humidity and therefore, it is difficult to position sensors near motor. In such a case, we must troubleshoot the system without using torque or speed sensors. The proposal method can estimate the torque and speed of IM by using the current and voltage nearthe switchboard. We use the inner and outer products between currents and voltages. Furthermore, we propose the parameter identification method of mutual inductance, leaked inductance and rotor resistance. The proposed method is validated by experimental results.
The Japanese EFL Learners’ Self-Regulated Language Learning and Proficiency
( Akiko Fukuda ) 범태평양 응용언어학회 2018 범태평양응용언어학회지 Vol.22 No.1
The purpose of this study was to explore the relationship between learners’ self-regulated language learning and proficiency and to examine the differences in characteristics of self-regulated learning (SRL) between low- and high-proficiency learners. SRL is a learning process throughout setting goals, monitoring tasks, and reflecting on performance, which includes both cognitive and affective aspects. Participants were 97 Japanese university students of English. Based on their proficiency, 67 out of them were assigned to the L group and 30 to the H group in order to compare the difference of their SRL skills. They all took the Motivated Strategies for Learning Questionnaire (MSLQ) online to measure their SRL skills and reported their latest TOEIC scores to determine their English proficiency. The MSLQ includes 81 items that were administered on the website for ease of access. Exploratory factor analyses determined five motivational and six learning strategy factors. Based on these factors, multiple regressions and t-tests were performed. Multiple regressions examining the influences of SRLs on proficiency subsequently showed that three learning strategy factors in SRL―metacognitive strategies, effort regulation, and coping with problems―significantly predicted the variance in learners’ proficiency; no motivational factors predicted it, even though correlations between three out of five factors and proficiency were found, namely, self-efficacy, intrinsic goal orientation, and test anxiety. Later t-tests, however, showed significant differences in SRL between low- and high-proficiency learners in the following motivational and learning strategy factors: self-efficacy, intrinsic goal orientation, test anxiety, metacognitive strategies, effort regulation, and coping with problems. The findings suggest that although they did not directly account for learner proficiency, yet motivational factors were evidently related to English proficiency level. Based on these results, the characteristics of less proficient learners compared to those of more proficient learners are discussed.
Akiko M. SUMI,Katsunori SUMI 한국글로벌문화학회 2020 글로벌문화연구 Vol.11 No.1
The purpose of this study is to investigate effects of the satisfaction of basic psychological needs (competence, autonomy, and relatedness) on academic performance during the Intensive Arabic Camp in Rurikei. The Camp activities ran for approximately one week in 2015 and again in 2016 in Rurikei, a suburb of Kyoto, Japan. One of the goals was to offer the participants basic psychological need satisfaction, as defined by the self-determination theory. Academic performance during the Camp was measured using the results of written and oral examinations, which were conducted before and after the Camp. The authors’ previous studies show that the participants’ need satisfaction generally increased due to the methods utilized in the Camp (Sumi & Sumi, 2019). Data were gathered from 95 participants in the Camp, who were mostly university students in Japan. The results showed that the written examination scores from after the Camp were positively affected by the satisfaction of autonomy and competence during the Camp. The oral examination scores from after the Camp were positively affected by the satisfaction of competence and relatedness during the Camp. These results suggest that the methods used within the Camp to increase need satisfaction also may enhance the participants’ motivation to learn Arabic, which in turn elevates the degree of their academic performance.