Wei-Hao Chang

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BACKGROUND A number of studies of elderly depression have examined the association between depression and its related factors; however, they did not observe how the development of related factors influenced elderly depression over time. This study aims to understand the rising trajectory of depressive symptoms found in elderly male and female, and whether(More)
Enterovirus 71 (EV71) commonly occurs in children, causing hand, foot and mouth disease (HFMD) in about 29% of patients. Studies have suggested that patients develop meningitis and encephalopathy with a mortality rate of 4-26%. EV71 subgenotypes including B4, B5, C2, C4 and C5 have caused HFMD epidemics in Taiwan. In terms of therapeutical strategy,(More)
A single-sided mobile NMR apparatus with a small Halbach magnet was constructed for the first time. It is lightweight, compact and exhibits good sensitivity. The weight of the device is only 2 kg, and the NMR signal of the pencil eraser block can be detected in one shot using the device. This study describes the characteristics of this instrument, including(More)
This study presents a simple design for a mobile, single-sided nuclear magnetic resonance (NMR) apparatus which uses the magnetic flux parallel to the magnetization direction of a single, disc-shaped permanent magnet polarized in radial direction. The stray magnetic field above the magnet is approximately parallel to the magnetization direction of the(More)
For the purpose of improving weapon effectiveness evaluation, this research uses system dynamic as the model. The simulation scenario was developed by combining the reconnaissance aircrafts and attack fighters in terms of joint operations, establishing subsystems of dependability, self-recovery, and reconnaissance. In addition, the swarm Unmanned Aerial(More)
Compressed sensing MRI can accelerate MRI temperature monitoring of tissues undergoing the high-intensity focused ultrasound (HIFU) treatment. This paper investigates the relationship between the accuracy of the MRI temperature maps reconstructed using reference image-based compressed sensing and some parameters such as the HIFU hot spot size, the image(More)
Just in a few decades, the rapidly developed wireless networks and the intelligent information systems popularity had so dramatically changed our daily lives. From the view of the ubiquitous computing, which context and ambient awareness [5]respected omnipresent computing allow users to receive the location corresponded and suitable information at any time(More)