this study aimed to evaluate the attitude of pediatricians toward the use of complementary and traditional medicine (tm) on children in muscat, oman. a cross-sectional survey was performed using a self-completed questionnaire during the year 2012. a total of 67 pediatricians, comprising of 30 males (44.8%) and 37 females (55.2%) participated in the study. the majority of the studied group (83.5...

The coordinate-free one-way wave equation is transferred in spherical coordinates. Therefore it necessary to achieve consistency between gradient, divergence and Laplace operators establish, beside the conventional radial Nabla operator ∂Φ/∂r, a new variant ∂rΦ/r∂r. two variants differ near field term Φ/r whereas far r≫0 there asymptotic approximation. Surprisingly, more complicated gradient ∂r...

We present Frequency Analyser, an Android TM application for measuring the fundamental frequency of a sound wave with very high precision in a frequency range between 100 Hz and 11 kHz. The application allows exporting the data of frequency as a function of time to an ASCII file. Several examples of application to Physics and Engineering teaching experiments are presented.

The ability to detect and quantify changes in the Earth’s environment depends on satellites sensors that can provide calibrated, consistent measurements of Earth’s surface features through time. A critical step in this process is to put image data from subsequent generations of sensors onto a common radiometric scale. To evaluate Landsat-5 (L5) Thematic Mapper’s (TM) utility in this role, image...