This study evaluated the accuracy of Hill-type muscle models during movement. Hill-type models are ubiquitous in biomechanical simulations. They are attractive because of their computational simplicity and close relation to commonly measured experimental variables, but there have been surprisingly few experimental validations of these models during functionally relevant conditions. Our hypothes...

A brief review of previous studies shows that topographic features play an important role in the amplification (de-amplification) seismic waves. Most researchers who have focused on effects paid attention to distribution isolated features, whereas what is seen nature often more complicated. It known 2D or 3D geological structures further contribute ground motion. The main objective this study i...

In the early 60’s J. B. Keller and D. Levy discovered a fundamental property: instability tongues in Mathieu-type equations lose sharpness with addition of higher-frequency harmonics Mathieu potentials. Twenty years later, V. Arnold similar phenomenon on circle maps (and rediscovered result Levy). this paper we find third class object where type behavior takes place: area-preserving cylinder. l...

OBJECTIVES To report our experience with Mathieu urethroplasty for revision of hypospadias repairs. Mathieu perimeatal-based flap urethroplasty remains a popular technique more than seven decades after its description for single-stage hypospadias repair. The excellent results of primary distal hypospadias repair are well documented, but reports of the results using the technique as a salvage pr...

A conic of the Veronese surface in PG(5, 3) is a quadrangle. If one such quadrangle is replaced with its diagonal triangle, then one obtains a point model K for Witt’s 5–(12, 6, 1) design, the blocks being the hyperplane sections containing more than three (actually six) points of K. As such a point model is projectively unique, the present construction yields an easy coordinate–free approach t...

We prove that the the exponential moments of the position operator stay bounded for the supercritical almost Mathieu operator with Diophantine frequency.