In previous research, acoustic characteristics of the male voice have been shown to signal various aspects of mate quality and threat potential. But the human voice is also a medium of linguistic communication. The present study explores whether physical and vocal indicators of male mate quality and threat potential are linked to effective communicative behaviors such as vowel differentiation a...

A careful analysis of the gravitational geon solution found by Brill and Hartle is made. The gravitational wave expansion they used is shown to be consistent and to result in a gauge invariant wave equation. It also results in a gauge invariant effective stress-energy tensor for the gravitational waves provided that a generalized definition of a gauge transformation is used. To leading order th...

Around the world, there appears to be a growing concern with spirituality in the general public as well as among scholars. Whether one looks at the list of best-selling books, searches the Web, watches contemporary movies or TV shows, or reads general-interest magazines, one quickly finds evidence of this trend. And one sees religion and spirituality (mixed with nationalism and ethnic tensions)...