This is a study of the course of the conduction system in two cases of hypoplasia of the aortic tract complex, one with mitral stenosis and the other with mitral atresia. In both there was a posterior atrioventricular (AV) node which formed the AV bundle. In case 1 the bundle was short and bifurcated early. The branching bundle gave off a large left bundle branch (LBB), many Mahaim fibers to th...

Task modeling and task planning are very important in robotic systems especially for large-scale nondeterministic problems. Two widely studied models (the classical planning model and the Markov Decision Process (MDP) model) are inapplicable to such problems due to either inherently assumed determinism or dimensional explosion. An amalgamation of these two results in a new model which is propos...

The paper identifies several new properties of the lattice induced by the subsumption relation over first-order clauses and derives implications of these for learnability. In particular, it is shown that the length of subsumption chains of function free clauses with bounded size can be exponential in the size. This suggests that simple algorithmic approaches that rely on repeating minimal subsu...

Form factors of rare B → K 0 (1430)l+l− decay are calculated within three–point QCD sum rules, with K 0 (1430) being the p–wave scalar meson. The branching ratios are estimated when only short, as well as short and long distance effects, are taken into account. It is obtained that the B → K 0 (1430)l+l− (l = e, μ) decay is measurable at LHC. Measurement of these branching ratios for the semilep...

The chemical-gas dynamic mechanisms behind the instability and failure of a onedimensional pulsating detonation wave driven by a three-step chain-branching reaction are revealed by direct numerical simulation. Two types of pulsating instability observed experimentally are explained. The first involves regular oscillations of the detonation front, where the instability is driven by low-frequency...

We report that activin profoundly alters epithelial branching morphogenesis of embryonic mouse salivary gland, pancreas and kidney rudiments in culture, indicating that it may play a role as a morphogen during mammalian organogenesis. In developing pancreas and salivary gland rudiments, activin causes severe disruption of normal lobulation patterns of the epithelium whereas follistatin, an acti...