The present study compared the impact of teacher-provided and peer-provided oral assistance in the acquisition of English wh-question forms. Participants were 90 female Iranian EFL learners who constituted the 3 groups of the study: teacherassisted, peer-assisted, and a control group. Participants in the experimental groups received assistance either from the teacher or a peer during task-based...

abstractin the present study, attempt has been made to examine the effectiveness of peer and teacher scaffolding in reading comprehension of intermediate efl students in symmetrical and asymmetrical groups. to do so, sixty intermediate students were purposively selected out of 150 intermediate students in hamadan islamic azad university and kish language institute in hamadan. they were divided ...

This paper studies the problem of maintaining eventual consistent group membership without any synchrony assumption inside an unbounded group G of processes that varies over the time (processes may join and leave the group). Eventual consistency means that if at any time all group membership changes cease, processes will converge in a finite time to a single consistent view. Due to the lack of ...

Peer-to-Peer systems become popular applications but suffer from insufficient resource availability which is caused by free-riders and inefficient lookup algorithms. To address the first cause, a number of recent works have focused on providing appropriate incentive mechanisms to encourage participants to contribute their resources to the P2P systems. To improve the lookup efficiency, locality-...