Gaps in our knowledge of basic fish ecology have provided impetus for development of novel “ecology tags” to detect and quantify hard to observe behaviors such as spawning, schooling and feeding. The acoustic environment is one source of potentially useful information about these behaviors. We implanted an acoustic recording tag (Bioacoustic Probe) into the gut cavity of a blacktip reef shark t...

Modeling the interaction of light with real-world environments is a difficult problem. In particular, the geometric and lighting complexity required to approximate reality are huge challenges. The " Ray Tracing " algorithm is well-suited to deal with geometric complexity since its performance is sub-linear in the number of geometric primitives. However, its computational cost is linear in the n...

Progressive multifocal leukoencephalopathy is caused by JC virus and mainly affects human immunodeficiency virus infected patients. The disease is exceptionally rare in children. The diagnosis is based on magnetic resonance imaging and on the detection of JC virus DNA in the cerebrospinal fluid. This is a report of a 14 year old girl, not previously known to have human immunodeficiency virus, w...

Recently in this journal, Gregory & Dickinson (2012) replaced Prosopeia Bonaparte,1854, the widely used and longaccustomed generic name for the Fijian shining parrots, with Pyrrhulopsis Reichenbach, 1850. This action was then followed in the influential Howard & Moore global checklist of birds (Dickinson & Remsen 2013: 377) and the websites Avibase (2013) and TiF Checklist (2013). Gregory and D...

Technology driven distance education plays an important role in the development of higher education especially in assisting adult learners. In the context of Botswana, the development of distance education and the significance of technology in the delivery process is examined. Finally, the future prospects and the viable technology for the distance education programmes is suggested. Among diffe...