in this article, the linear array (with 20 elements in the horizontal orientation) of microstrip antenna is examined with horizontal polarization. the set includes three microstrip substrates. there is a power network in two lower substrates and microstrip patches in the upper substrate. excitation of patches has been done as coupled through the power network in two lower substrates. using the ...

Self-sustainable energy harvesting for Internet of Things devices is challenging since ambient may be sporadic and unpredictable. This situation leads to frequent power failures that lead intermittent operations, which prevent the reliability data communications. article presents fundamental hardware circuitry enables reliable communications over wireless batteryless node networks. We emphasize...

This study examined naturally-occurring university classroom interactions at Iranian universities and provided an analysis of silence patterns as politeness strategies used by male and female students. Since empirical studies of silence in classroom settings are scarce, this paper aimed to explain such phenomena using participant interviews, classroom observation and detailed discourse analysis...