Migratory songbirds use the geomagnetic field, stars, the Sun, and polarized light patterns to determine their migratory direction. To prevent navigational errors, it is necessary to calibrate all of these compass systems to a common reference. We show that migratory Savannah sparrows use polarized light cues from the region of sky near the horizon to recalibrate the magnetic compass at both su...

Festival is a popular open-source development and execution environment for speech synthesis. It has been well-integrated within many environments, particularly Unix ones, but so far has not been easy to integrate natively into Windows. We present two solutions to this: an MSAPI interface, which allows Festival voices to work with a range of speech-enabled Windows applications, and SpeechServer...

We study a Fourier-Mukai kernel associated to GIT wall-crossing for arbitrarily singular (not necessarily reduced or irreducible) affine varieties over any field. This is closely related derived fiber product diagram the and simple understand from viewpoint of commutative differential graded algebras. However, perspective algebraic varieties, can be quite complicated, corresponding complex with...

Vehicle Routing Problem (VRP) is addressed to a class of problems for determining a set of vehicle routes, in which each vehicle departs from a given depot, serves a given set of customers, and returns back to the same depot. On the other hand, simultaneous delivery and pickup problems have drawn much attention in the past few years due to its high usage in real world cases. This study, therefo...

Migrating monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate from eastern North America to their overwintering grounds in central Mexico. Here we describe the neuronal layout of those aspects of the butterfly's central complex likely to establish part of the internal sun compass and find them highly homologous to those of the desert locust. Intracellular recor...