Since Bristowe (1887) first described a series of cases of ' recurrent palpitation of extreme rapidity in persons otherwise healthy', paroxysmal tachycardia in adults has become a well-known condition. In children the condition has been considered rare. Taran and Jennings (1937) in a review of the literature found only 52 cases under the age of 15 from 1892 to 1935, to which Johnson (1940) adde...

The impact-echo (IE) method is a popular non-destructive testing (NDT) technique widely used for measuring the thickness of plate-like structures and for detecting certain defects inside concrete elements or structures. However, the IE method is not effective for full condition assessment (i.e., defect detection, defect diagnosis, defect sizing and location), because the simple frequency spectr...

where h and g are analytic in the unit disk D = {z : |z| < 1}. A sufficient coefficient condition for this function in the class HM(β, λ, k, ν) and a necessary and sufficient coefficient condition for the function f in the class HM(β, λ, k, ν) are determined. We investigate inclusion relations, distortion theorem, extreme points, convex combination and other interesting properties for these fam...

The graded possibilistic clustering paradigm includes as the two extreme cases the “probabilistic” assumption and the “possibilistic” assumption adopted by many clustering algorithms. We propose an implementation of a graded possibilistic clustering algorithm based on an interval equality constraint enforcing both the normality condition and the required graded possibilistic condition. Experime...

The photograph here ..published is that of a boy who was brought to me for opinion and diagnosis. The condition appears to be possibly one of symmetrical enchondromata of the eyelids. This disease is one of extreme rarity, and is only passingly referred to in Fuch's Textbook of Ophthalmology. In this particular patient points of interest are the young age of the patient and the symmetrical cond...

The problem of finding the most economical coverings of M-dimensional Euclidean space by equal spheres whose centres form a lattice, which is equivalent to a problem concerning the inhomogeneous minima of positive definite quadratic forms, has been discussed recently by Barnes and Dickson [1]. The reader is referred to [1] for a complete background on the problem. Terms and notations used will ...

Compact model for expressing turn-off waveform for advanced trench gate IGBTs is proposed even under high current density condition. The model is analytically formulated only with device structure parameters so that no fitting parameters are required. The validity of the model is confirmed with TCAD simulation for 1.2 kV to 6.5 kV class IGBTs. The proposed turn-off model is sufficiently accurat...

Compact model for expressing turn-off waveform for advanced trench gate IGBTs is proposed even under high current density condition. The model is analytically formulated only with device structure parameters so that no fitting parameters are required. The validity of the model is confirmed with TCAD simulation for 1.2 kV to 6.5 kV class IGBTs. The proposed turn-off model is sufficiently accurat...

The paper reports on the results of a recent study on student perceptions on agile practices. The study involved forty-five students enrolled in three different academic programs (Diploma, Bachelor’s and Master’s) in two institutions to determine their perceptions of the use of extreme programming practices in doing their design and coding assignments. Overwhelmingly, students’ experiences were...