We show that the often observed efficiency droop in AlGaN quantum well heterostructures is an internal carrier loss process, analogous to the InGaN system. We attribute this loss …
Increasing the knowledge of specialized English is often a demanding job for students at the tertiary level in Iran, for they have little exposure to English. The lack of textbooks for …
The main objective of this study was to investigate the effects of audit quality on over-investment in listed companies in Tehran Stock Exchange. In order to measure audit quality, two …
In this work, we first analyze transmission metallic gratings by modal expansion and surface impedance approximation. By means of this method, an analytical model for different types …
Tailored (AlGaIn) N multi-quantum well structures are characterized using low temperature photoluminescence spectroscopy. The results show that Auger recombination plays a key …
This quasi-experimental study examined whether TED (Technology, Entertainment, Design) talks could improve the listening skills of Iranian EFL learners. The study also explored …
Brainstorming, as a pre-writing activity, facilitates the process of generating ideas and helps organize learners' thoughts to get involved in writing activities. The present convergent …
Mobile-assisted language learning (MALL) has proven effective in many aspects. It is necessary to review the effects of MALL on English listening among learners who take English as a …