With conventional time-of-flight sonar ranging systems, it is impossible to differentiate a reflection from a plane and from a rightangle corner reflector. A multitransducer pulse/echo ranging system is described that differentiates these two reflectors by exploiting the physical properties of sound propagation. The amplitudes and ranges of reflected signals for the different transmitter and re...

Abstract In 1909 Borel defined normality as a notion of randomness the digits representation real number over certain base (fractional expansion). If we think an infinite sequence symbols from finite alphabet A , can define directly for words : word x is normal to if every block appears with same asymptotic frequency in other length. Many examples have been found since its definition, being Cha...

This paper introduces a set of English grammar symbols that the author has developed to enhance students’ understanding and consequently, application of the English grammar rules. A pretest-posttest control-group design was carried out in which the samples were students in two girls’ senior high schools (N=135, P ≤ 0.05) divided into two groups: the Treatment which received gramm...

The human body is endowed with varied forms of social significance, and it is this which sociology has addressed by asking questions such as: Towhat degree do individuals have control over their own bodies? Using familiar examples from everyday life, such as diet and exercise regimes,personal hygiene, dress, displays of emotion, and control over bodilyfunctions. This research investigates the b...