In this paper, we consider the design of large-scale hub-and-spoke transportation networks in a competitive environment. We adopt the hub arc location model that locates arcs with discounted transport costs connecting pairs of hub facilities. Two firms compete for passengers in a Stackelberg framework where the leader firm locates hub arcs to maximize its revenue, given that the follower firm w...

North American Muslims seeking to resolve their private disputes confront multifaceted access justice issues. Since Islamic marriage and divorce laws do not always align with family legislative schemes, are burdened trying simultaneously meet obligations toward both legal systems. Unlike secular law, proceedings require either the husband’s eventual consent or availability of a Muslim judge. Th...

Listeners often complain that they have trouble following a conversation when the environment is noisy. The environment could be noisy because of the presence of other unrelated but meaningful conversations, or because of the presence of less meaningful sound sources such as ventilation noise. Both kinds of distracting sound sources produce interference at the auditory periphery (activate simil...

This study compared the speech recognition performance of 12 hearing-impaired listeners fit with three commercially available behind-the-ear hearing aids in both directional and omnidirectional modes. One digitally programmable analog and two "true digital" hearing aids were selected as test instruments. Testing was completed in both "living room" and anechoic room environments. Speech recognit...

We consider a competing spatial growth dynamics permitting that more than one cluster develop in the same environment given by a first-passage percolation model on a Voronoi tiling of the plane. We focus on the long time behavior of these competing clusters and derive some limit theorems related to the morphology of the “competition interface”. To study the structure of this interface we use th...