We consider magnetic flux moving in superconductors with periodic pinning arrays. We show that sample heating by moving vortices produces negative differential resistivity (NDR) of both N and S type (i.e., N- and S-shaped) in the voltage-current characteristic (VI curve). The uniform flux flow state is unstable in the NDR region of the VI curve. Domain structures appear during the NDR part of t...

Treatment failures in head and neck cancer patients are mainly related to locoregional tumor recurrence. The objective of the present study was to evaluate the diagnostic accuracy of model-free dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to detect local recurrence during the surveillance of head and neck cancer patients.Our retrospective study enrolled 24 patients with primar...

We present a part-type segmentation method for articulated voxel-shapes based on curve skeletons. Shapes are considered to consist of several simpler, intersecting shapes. Our method is based on the junction rule: the observation that two intersecting shapes generate an additional junction in their joined curve-skeleton near the place of intersection. For each curve-skeleton point, we construct...

We seek an appropriate definition for a Shimura curve of Hodge type in positive characteristics via characterizing curves in positive characteristics which are reduction of Shimura curve over C. In this paper, we study the liftablity of a curve in the moduli space of principally polarized abelian varieties over k, char k = p. We show that in the generic ordinary case, some tensor decomposition ...

In this paper, we obtain some characterizations for a Frenet curve with the help of an alternative frame different from frame. Also, in present study consider weak biharmonic and harmonic 1-type curves by using mean curvature vector field curve. We also whose is kernel Laplacian. give theorems them Euclidean 3-space. Moreover, classifications these type curves.