Abstract The study aimed at investigating the efficacy of written corrective feedback (CF) in improving Iranian EFL learners’ grammatical accuracy. It compared the effects of focused and unfocused written CF on the learners’ grammatical accuracy. 75 EFL students formed a one control and two experimental groups. The focused feedback group was provided with error correction in tenses. The unfocus...

This study explored the EFL teachers’ written corrective feedback (CF) techniques and their EFL students’ ability to integrate the CF while revising their texts. A total of 72 EFL students and 4 EFL teachers participated in this study. The data were collected through explicitation interviews administered to teachers and students, as well as through students’ written productions. A content analy...

This study was carried out to determine the feedback from the primary school headmasters on in-service training activities. 384 primary school headmasters were asked to give feedback on the in-service training facilities organized by the Ministry of Education through an open –ended question. The study group was formed by 359 primary school headmasters who attended “Management Skills” seminars w...

This study explored the EFL teachers’ written corrective feedback (CF) techniques and their EFL students’ ability to integrate the CF while revising their texts. A total of 72 EFL students and 4 EFL teachers participated in this study. The data were collected through explicitation interviews administered to teachers and students, as well as through students’ written productions. A content analy...

Abstract The study aimed at investigating the efficacy of written corrective feedback (CF) in improving Iranian EFL learners’ grammatical accuracy. It compared the effects of focused and unfocused written CF on the learners’ grammatical accuracy. 75 EFL students formed a one control and two experimental groups. The focused feedback group was provided with error correction in tenses. The unfocus...

The bulk of research within the interactionist framework seems to be consensually pointing to the beneficial effects of interaction in SLA. However, few studies have investigated the role of training in providing and perceiving interactional feedback, especially among young learners. This study probed the effects of training prior to engagement in interaction in case of young learners acquiring...

Frequency-chirped free-electron lasers (FELs) are useful to generate a large photon bandwidth or a shorter xray pulse duration. In this paper, we present a threedimensional analysis of a high-gain FEL driven by the energy-chirped electron beam. We show that the FEL eigenmode equation is the same for a frequency-chirped FEL as for an undulator-tapered FEL. We study the transverse effects of such...

China has endeavored in the field of FEL research since the mid-eighties. Compton regime, Raman regime, Electromagnetic Pumping, Cherenkov FEL, and Harmonic Generator FEL, etc. based on the RF linac accelerator, induction linac accelerator, pulsed-line accelerator, and storage ring have all been developed. These experimental projects are in various stages of development and are discussed in seq...