Bats use echolocation or biosonar to navigate and find prey at night. They emit short ultrasonic calls and listen for reflected echoes. The beam width of the calls is central to the function of the sonar, but directionality of echolocation calls has never been measured from bats flying in the wild. We used a microphone array to record sounds and determine horizontal directionality for echolocat...

Although tensor product real-valued wavelets have been successfully applied to many high-dimensional problems, they can only capture well edge singularities along the coordinate axis directions. As an alternative and improvement of tensor product real-valued wavelets and dual tree complex wavelet transform, recently tensor product complex tight framelets with increasing directionality have been...

This paper presents an analysis of the basic primary stress system in Thompson River Salish (TRS), an Interior Salishan language spoken in British Columbia, Canada. The lexical accent system in TRS exhibits a pattern of conflicting directionality: In words with no accented morphemes, stress falls close to the left edge of the prosodic word (PrWd); in words with accented morphemes, stress falls ...

What exactly is the relationship between verb hammer and noun hammer? Is one derived from other, are both a common source, how can we tell? This article provides an overview of recent generative approaches to derivational directionality reviews different kinds answers given such questions, considering diachrony synchrony deverbal nouns, deadjectival denominal verbs, similar forms. We critically...

In this research project, we try to find out how well we can point to core-collapse supernova by detecting supernova neutrino events in a water detector, and to investigate improvement of the pointing algorithm. A refined model is created of supernova neutrinos in which scattered electron events and 30 times more positron events are generated after a burst of supernova neutrinos has propagated ...