In this paper, we outline a simple approach, called ROAR, that enables the Ad-Hoc On-Demand Distance Vector (AODV) routing protocol to strengthen its routes by recruiting neighbors of nodes on the least cost path as support nodes during the route construction process, and working closely with the medium access control (MAC) to employ an opportunistic forwarding scheme that takes advantage of th...

This paper makes the first attempt to perform an acoustic-to-articulatory inversion of a lion (Panthera leo) roar. The main problems that one encounters in attempting this, is the fact that little is known about the dimensions of the vocal tract, other than a general range of vocal tract lengths. Precious little is also known about the articulation strategies that are adopted by the lion while ...

This paper describes the ROAR project. ROAR is an acronym for Reliability Obtained By Adaptive Reconfiguration. Adaptive Computing System (ACS) environments provide opportunities for dependable computing solutions. We identify some of the issues in traditional dependable computing solutions. We show that adaptive and reconfigurable environments address these issues and also enable new innovativ...

editorial editorial t he year 2011 has thus far been marked by a wave of revolutions, sparked by the desire of oppressed people all over the world—notably the arab world—for freedom and democracy. Some dictatorships have fallen, whilst others have trained their guns on their own people , in a vain attempt to postpone the day of reckoning for their regimes. But, lest we delude ourselves that rea...

Studying female response to variation in single acoustic components has provided important insights into how sexual selection operates on male acoustic signals. However, since vocal signals are typically composed of independent components, it is important to account for possible interactions between the studied parameter and other relevant acoustic features of vocal signals. Here, two key compo...

Ionospheric electron density data from the Sondrestrom incoherent scatter radar (ISR) have been used to characterize the structure of the F region ionosphere during ground-based LF/MF/HF receiver observations of natural ionospheric radio emissions known as auroral roar. In five out of six cases, the F region ionosphere has significant horizontal Ne gradient scale lengths (IVN/NI mi• < 120 km, m...