Simple random walks on a partially directed version of Z are considered. More precisely, vertical edges between neighbouring vertices of Z can be traversed in both directions (they are undirected) while horizontal edges are one-way. The horizontal orientation is prescribed by a random perturbation of a periodic function, the perturbation probability decays according to a power law in the absolu...

This paper provides a new model of network formation that bridges the gap between the two benchmark models by Bala and Goyal, the one-way ‡ow model, and the two-way ‡ow model, and includes both as particular extreme cases. As in both benchmark models, in what we call an “asymmetric ‡ow”network a link can be initiated unilaterally by any player with any other, and the ‡ow through a link towards ...

Hadronic decay modes D0 → (K,K)(η, η′) and (D+,D+ s ) → (π+, ρ+)(η, η′) are studied in the generalized factorization approach. Form factors for (D,D+ s ) → (η, η′) transitions are carefully evaluated by taking into account the wave function normalization of the η and η′. The predicted branching ratios are generally in agreement with experiment except for D0 → Kη′, D+ → π+η and D+ s → ρ+η′; the ...

Hadronic decay modes D0 → (K, K)η() and (D+,D+ s ) → (π+, ρ+)η( ) are studied in the generalized factorization approach. Form factors for (D,D+ s ) → (η, η′) transitions are carefully evaluated by taking into account the wave function normalization of the η and η′. The predicted branching ratios are generally in agreement with experiment except for D0 → Kη′, D+ → π+η and D+ s → ρ+η′; the calcul...

Modeling tonal induction dynamics from naturalistic music stimuli usually involves slide-windowing the stimuli in analysis frames or leaky memory processing. In both cases, the appropriate selection of the time-scale or decay constant is critical, although rarely discussed in a systematic way. This study shows the qualitative and quantitative impact that time-scale has in the evaluation of a si...

Suppose we cover the set of vertices of a graph G by non-overlapping monomers (singleton sets) and dimers (pairs of vertices corresponding to an edge). Each way to do this is called a monomer-dimer configuration. If G is finite and λ > 0, we define the monomer-dimer distribution for G (with parameter λ) as the probability distribution which assigns to each monomer-dimer configuration a probabil...

Consider a globally hyperbolic cosmological spacetime. Topologically, the spacetime is then a compact 3-manifold in cartesian product with an interval. Assuming that there is an expanding direction, is there any relation between the topology of the 3-manifold and the asymptotics? In fact, there is a result by Michael Anderson, where he obtains relations between the long-time evolution in Genera...

Simple random walks on a partially directed version of Z2 are considered. More precisely, vertical edges between neighbouring vertices of Z2 can be traversed in both directions (they are undirected) while horizontal edges are one-way. The horizontal orientation is prescribed by a random perturbation of a periodic function, the perturbation probability decays according to a power law in the abso...