INTRODUCTION Sonoelastography is an emerging ultrasound-based technique that allows characterization of tissue stiffness. AIM The aim of this report is to present a case of significant penile curvature with a non-palpable, non-sonographically visualized plaque that was demonstrable with sonoelastography. METHODS A 60-year-old male presented with significant left penile curvature during erec...

A method is presented for segmentation of anatomical structures that incorporates prior information about the intensity and curvature profile of the structure from a training set of images and boundaries. Specifically, we model the intensity distribution as a function of signed distance from the object boundary, instead of modeling only the intensity of the object as a whole. A curvature profil...

It is a simple consequence of the maximum principle that a superharmonic function u on Rn(i. e. ∆u ≤ 0) which is 1 near infinity is identically 1 on Rn (throughout this paper, n ≥ 3). Geometrically this means that one can not conformally deform the Euclidean metric in a bounded region without decreasing the scalar curvature somewhere. In fact there is a much stronger result: one can not have an...

Tubular channel angular pressing (TCAP) is a new and novel severe plastic deformation (SPD) technique suitable for fabrication of bulk nanograined tubular materials. There are several parameters in TCAP process. The present paper investigates the effects of curvature angles, deformation ratio (= maximum radius during TCAP/ initial radius) and deformation direction on the plastic deformation beh...

We prove that a Ricci curvature based method of triangulation of compact Riemannian manifolds, due to Grove and Petersen, extends to the context of weighted Riemannian manifolds and more general metric measure spaces. In both cases the role of the lower bound on Ricci curvature is replaced by the curvature-dimension condition CD(K,N). We show also that for weighted Riemannian manifolds the tria...

Luca Callegaro INRIM Istituto Nazionale di Ricerca Metrologica, strada delle Cacce 91,Turin 10135, Italy (Dated: August 17, 2016) Abstract We propose a simple algorithm devoted to locate the “corner” of an L-curve, a function often used to chose the correct regularization parameter for the solution of ill-posed problems. The algorithm involves the Menger curvature of a circumcircle and the gold...

A new algorithm for detecting dominant points of digitized closed curves is presented. At first a process of localization of maximum curvature points is done. The method adds iteratively contour points as dominant points by a criterion that considers the distance of contour points respect to the set of dominant points calculated in previous steps. It follows a final process of refinement. The p...

In order to eliminate the weakness of large volumes data in 3D modeling process, a fast and efficient sampling method based on curvature analysis of cubic Bézier curve is presented. With the method, the characteristic points and curvature maximum value of cubic Bézier curve are used as the reference standard of the sampling interval and density. For cubic B-spline curves, the sampling data can ...

The paper presents detailed micromechanical finite element simulations of composite materials with soft materials undergoing large macroscopic bending deformation. The simulations allow the study of fibre microbuckling under bending, including the kinematics of the fibres, as well as the strains in the matrix. These simulations lead to a simple analytical model that allows a quite accurate esti...

By combining detailed imaging measurements at different tilt angles with simulations of ray emission from prolate deformed lasing micro-droplets, we conclude that the probability density for the lasing modes in a three-dimensional dielectric microcavity must reside in the chaotic region of the ray phase space. In particular, maximum emission from such chaotic lasing modes is not from tangent ra...