the present research identified major barriers of isfahan university teachers participation in electronic technology courses. a second goal of this study was to examine the effects of characteristics and demographics of university teachers on these barriers. in this research problems and barriers fell into three distinct categories: personal, perceptual, and contextual. a questionnaire was desi...

traditional and modern vocabulary instruction techniques have been introduced in the past few decades to improve the learners’ performance in reading comprehension. semantic mapping, which entails drawing learners’ attention to the interrelationships among lexical items through graphic organizers, is claimed to enhance vocabulary learning significantly. however, whether this technique suits all...

Perceptual organization is to group sensory primitives arising from a common underlying cause by imposing structural organization on sensory data. It has been emphasized as a robust intermediate-level grouping process toward object recognition and reconstruction since it imparts robustness and computational efficiency to the perceptual process. Sarkar and Boyer (1993) proposed a classificatory ...

We present a novel methodology for building highly integrated multimodal systems. Our approach is motivated by current cognitive and behavioral theories of sensory perception in animals and humans. We argue that perceptual integration in multimodal systems needs to happen at the lowest levels of the individual perceptual processes. Rather than treating each modality as a separately processed, i...