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The aim of this paper is to present a finite element modeling of the dynamic motion of a turbine rotor and its controller design with the mass unbalance under a crack on a rotating shaft. This process is an advanced method to the mathematical description of a system including an influence of a mass unbalance and a crack on the rotor shaft. As the first step, the shaft is physically modeled with a finite element method and the dynamic mathematical model is derived by using the Hamilton principle; thus, the system is represented by various subsystems. The equation of motion of a shaft with a mass unbalance and a crack is established by adapting the local mass unbalance and stiffness change through breathing and gaping from the existence of a crack. This is a reference system for the given system. Based on a fictitious model for transient behavior induced from vibration phenomena measured at the bearings, an elementary estimator is designed for the safety control and detection of a mass unbalance on the shaft. Using the state estimator, a bank of an estimator is established to get the diagnosis and the system data for a controller.
The purpose of this study was to test the effect of individualized music on
agitation for homedwelling patients with dementia. Method: One group pre-post
test was used for research design and a total of 26 subjects participated in
this study. Individualized music intervention was subjects’ listening to their
preferred music for 30 minutes prior to peak agitation time twice a week for a
total of four sessions. The subject’s agitation levels were measured for three
different points: thirty minutes prior to listening to music, 30 minutes while
listening to the music, and after listening to the music throughout the 4 sessions.
To measure the agitation level, the modified CohenMansfield Agitation Inventory
was used. A Paired ttest was used for data analysis. Results: Most subjects
were female (73.1%), Caucasian (92.4%), Protestant (50%), and independent
activity (53.8%). The mean of the subjects’ MMSE scores was 8.08 (8.17). The most
favorite music types included country/western music (31.0%), religious music
(26.9%), and big band (26.9%). Agitation level decreased while listening to the
music compared to the baseline (t = 3.70, p < .001). Conclusion: The
findings of this study would provide meaningful data to develop an
individualized music intervention protocol to control agitation for homedwelling
patients with dementia.
Let E be an elliptic curve over a given number field . By Mordell’s Theorem, the torsion subgroup of E defined over Q is a finite group. Using Lutz-Nagell Theorem, we explicitly calculate the torsion subgroup E(Q)tors for certain elliptic curves depending on their coefficients.
The aim of the current study is to examine the extent to which equity in the utilization of longterm care services has been achieved in the Republic of Korea (hereafter Korea), based on the Aday—Andersen Access Framework that takes into consideration a series of variables hypothesized as predictive of utilization. The current study used cross-sectional survey data collected and conducted by the Korea Labor Institute (KLI) between August 1 to December 22, 2006. The sample for this study was 5544 persons who are older than 60 years. The study was extracted from a larger nationally representative cross-sectional survey of 10,255 individuals. The stratified cluster sampling technique was used to draw the survey respondents. A self-administered questionnaire was used to collect the data from the sample. Descriptive and logistic regression analysis was performed examining the relationship between the dependent variable and the independent variables and the relative importance of factors. The results indicate that a universal health insurance system has not yielded a fully equitable distribution of services. The limitation of benefit coverage as well as disparities in consumer cost-sharing and associated patterns of utilization across plans high out-of-pocket payment can be a barrier to health care utilization, which results in inequity and differential long-term care utilization between sub-groups of older adults. Health policy reforms in Korea must continue to concentrate on expanding insurance coverage, reducing the inequities reflected in disparities in consumer cost-sharing and associated patterns of utilization across plans, and establishing a financially separate insurance system for poor older adults. The behavioral responses of physicians to the method of reimbursement, and the subsequent impact on overall rates of utilization and expenditures need to be more fully understood. In addition, further research is needed to identify the nonfinancial barriers that persist for certain demographic subgroups, i.e., those 70 and older, men, lacking social network members, those who have four or more family members, and those who have no schooling.