Introduction: B1 mapping has a variety of applications including the design of RF pulses in parallel transmit systems, and flip angle calibration for T1 mapping. Many existing B1 mapping methods suffer from T1 dependence, long scan time or inability to handle the large B1 inhomogeneity that occurs even across the human brain at 7T. The Bloch-Siegert B1 mapping method has been recently introduce...

This paper presents a novel method for stance and swing phase detection employing Learning Vector Quantization (LVQ), using knee angle information only. The results show detection accuracy of 95.9% in stance phase and 83.9% in swing phase. The research concludes an efficient replacement of footswitch for phase detection. The work can directly lead to low cost speed adaptive transtibial prosthes...

One of the important parameters used in optics is the refractive index. There are different methods to measure the refractive index in the visible region. One of the techniques used to carry out these measurements uses the method of minimum deviation that suffers a ray of light when crossing a prism. Other common methods are based on the determination of the critical angle and in the Brewster a...

in this paper, a novel approach for ranking fuzzy numbers based on the angle measure is introduced. several left and right spreads at each chosen levels of fuzzy numbers is used to determine center of mass points(cmps) and then, the angels between the cmps and the horizontal axis is calculated. the total angle is determined by averaging the computed angles and finally, the novel method is compa...

Cross-calibration using an autocollimator and a polygon is the traditional method for calibrating rotary encoder. These angles, which can be calibrated this method, are limited by pitch angle of polygon, 15° 24-faced polygon. In work, we propose new shift-angle same setup as method. However, measure smaller than measurement limitation The proposed calibrate every experiment, use to SelfA encode...