In this issue of Korean Circulation Journal, Ko et al. report on the effectiveness and safety of percutaneous implantation of pulmonary arterial stents in congenital heart disease between 1999 and 2010 in one institute. Since Dr. Mullins recognized the potential for stents to treat pulmonary arterial stenosis effectively which were compared to the surgical methods, many reports about these expe...

Surely God, as a perfectly rational being, created the universe for some reason. But is God’s creating reason compatible with divine impassibility? That question I investigate in this article. The prima facie tension between impassibility and arises from impassibility’s commitment to God being uninfluenced by anything ad extra. If way, asks detractor, how could he be moved create at all? This h...

An algorithm is presented to numerically treat a free boundary problem arising in the theory of phase transition. The problem is one in which a collection of simple closed curves (particles) evolves in such a way that the enclosed area remains constant while the total arclength decreases. Material is transported between particles and within particles by diiusion, driven by curvature which expre...

We map polygonally patterned ground formed in sublimation tills that overlie debris-covered glaciers in Mullins Valley and central Beacon Valley, in southern Victoria Land, Antarctica, and distinguish five morphological zones. Where the Mullins Valley debris-covered glacier debouches into Beacon Valley, polygonal patterning transitions from radial (orthogonal) intersections to non-oriented (hex...

We present calculations of the stability of planar fronts in two mean field models of diffusion limited growth. The steady state solution for the front can exist for a continuous family of velocities, we show that the selected velocity is given by marginal stability theory. We find that naive mean field theory has no instability to transverse perturbations, while a threshold mean field theory h...

In this second part of the series, we focus on approximating the Hele-Shaw problem via the Cahn-Hilliard equation ut + ∆(ε∆u − εf(u)) = 0 as ε ↘ 0. The primary goal of this paper is to establish the convergence of the solution of the fully discrete mixed finite element scheme proposed in [21] to the solution of the Hele-Shaw (Mullins-Sekerka) problem, provided that the HeleShaw (Mullins-Sekerka...