This study addressed preschoolers' cognitive flexibility in an inductive task requiring response feedback processing to infer relevant task goals. A total of 63 4- to 6-year-olds were tested on a perceptual matching task in which they needed to switch attention among three colors. A computational model was designed to track down how responses to positive and negative feedback changed as childre...

This paper describes the robust optimal incremental motion control of a current  sensorless synchronous reluctance motor (SynRM), which can be specified by any desired speed profile. The control scheme is a combination of conventional linear quadratic (LQ) feedback control method and sliding mode control (SMC). A novel sliding switching surface is employed first, that makes the states of the Sy...

abstract the extent to which teachers’ written corrective feedback (wcf) is conducive to esl learners’ improvement has been discussed since truscott’s claim in 1996. the mentioned debate continues because there has been lots of contrastive research studies with different results. this paper presents the results of a 2-month study of the effectiveness of wcf to 65 low intermediate iranian learne...

We present the results of measurements of the scattering parameters of microstrip amplifiers MSAs based on the dc superconducting quantum interference device. The amplifier input impedance is poorly matched to typical transmission line impedances, resulting in high input return loss around 2 dB. We show that negative feedback can lower the MSA input impedance to achieve a robust match to 50 . I...

The present study aimed at providing a typology of Iranian supervisors’ written feedback on L2 graduate students’ theses/dissertations and examining the way different speech functions are employed to put the supervisors’ thoughts and feelings into words. In so doing, a corpus of comments, including 15,198 comments provided on 87 TEFL theses and dissertations by 30 supervisors were analyzed. We ...