In this paper, we present a Medical Image Visualizer (MIV) targeting cardiac SPECT images. The visualizer is built fully on open source image processing and visualization software. The main features of the visualizer are: a semiautomatic procedure for segmenting challenging cardiac images and an implementation of the polar map visualization (Bull’s eye diagram) that follows recent recommendatio...

A new derivation is given of an equation, relating the capture width of a wave power converter to the polar diagram of the waves generated by the device. The pattern of waves in the lee of the device is calculated in detail.

The phase diagram of the Pb(Lu0.5Nb0.5)O3-PbTiO3 (PLN-PT) binary system was previously reported based on XRD and dielectric measurements results. Unusually, the Curie temperature of PLN-PT with low PT obtained from the phase diagram is much lower than that of PLN and PT end members, which is different from others, such as PZT. Therefore, the complex structure of PLN-PT with low PT is desired to...

We develop a lattice model for the splay flexoelectric effect in nematic liquid crystals. In this model, each lattice site has a spin representing the local molecular orientation, and the interaction between neighboring spins represents pear-shaped molecules with shape polarity. We perform Monte Carlo simulations and mean-field calculations to find the behavior as a function of interaction para...

In Computer Graphics, Collision Detection is considered a key problem with important applications in related areas. Several solutions have been proposed, but independently of the chosen strategy, different stages of the solution are considered. It is not only relevant to apply a good static collision test, but reducing the pairs of objects susceptible of intersecting is important in order to ob...

we present observation of polar coronal hole plumes with foot point jets that shows evidence of longitudinal acceleration. the series of event, occurring in the north coronal hole on 10 july 2010, was observed by the aia telescopes of the solar dynamic observatory (sdo mission) in the euv lines, with unprecedented details. the structures along the plume show a propagating outward velocity of ab...

Two-dimensional simulation results are presented that capture at great detail the temporal evolution of Mach reflection triple point sub-structures intrinsic to gaseous detonation waves. The observed patterns are classified by shock polar analysis for realistic, thermally perfect but nonreactive gases. A diagram of the transition boundaries between possible Mach reflection structures is constru...

An n-Venn diagram consists of n curves that divide the plane into 2 connected regions, one region for each possible intersection of the interiors of the curves. We show there are exactly 406 6-Venn diagrams that (a) have 6 curves, (b) are simple (at most two curves intersect at any point), (c) can be drawn with all curves convex, and (d) are invariant under polar ips", a type of inversion symme...