in this paper, in order to optimize the portfolio consisting of selected industrial stocks of petroleum products, automobiles and parts, electrical industry and extraction of minerals from tehran stock exchange member, first, time – varying conditional covariance matrix has been estimated based on the following multivariate garch models: diagonal-vech (1,1), ccc (1,1) and diagonal -bekk (1,1). ...

The present study examines the role of Gal’perin’s Concept-based Instruction (CBI) as a pedagogical approach in teaching cognitive grammar-based (CG-based) concepts of tense and aspect to EFL students. Following the sociocultural theory of L2 Acquisition (SCT), arming L2 learners with scientific concepts can lead to L2 development by deepening their understanding and raising awareness of L2 str...

Although lexis research (e.g., Lewis, 1997; Taguchi, 2008) has already evidenced the possibility of teaching formulaic sequences (FS), further research is still needed to examine the procedures or frameworks through which the approach can be applied and probe the second or foreign language (L2) areas where it demonstrates more relevance. This pretest-posttest quasi-experimental study aimed, fir...

Introduction: The portfolio can be seen as a tool for assessmentof a variety of learning activities that differ in content, usage, andassessment. The portfolio not only meets the learner’s educationalneeds but also the political and public reassurance demand thatthe health professional has achieved the required competency ofthe curriculum that allows him or her to practice safely with orwithout...

The purpose of this study was to probe the effect of metacognitive strategy instruction through dialogic interaction on the reading comprehension performance and metacognitive awareness of Iranian EFL learners. The data were collected through the Survey of Reading Strategies (SORS) and a reading test to examine changes in metacognitive awareness and reading performance before and after the inte...

The purpose of this study was to probe the effect of metacognitive strategy instruction through dialogic interaction on the reading comprehension performance and metacognitive awareness of Iranian EFL learners. The data were collected through the Survey of Reading Strategies (SORS) and a reading test to examine changes in metacognitive awareness and reading performance before and after the inte...

In computer-based instruction learning environments, learners can be easily distracted due to the attraction of the enormous amount of interesting Internet content. If learners feel negative emotions during computer-based instruction, they may discontinue their learning. Thus, finding ways to keep learners feeling positive is an important part of computer-based instruction. Flow theory proposed...

BACKGROUND Bedside teaching with evidence-based practice elements, supported by e-learning activities, can play an important role in modern medical education. Teachers have to incorporate evidence from the medical literature to increase student motivation and interactivity. MATERIALS AND METHODS An integral part of the medical curricula at Palacky University Olomouc (Czech Republic) are real ...

a vast number of organizational projects as well as complexity of decision making process can cause particular challenges for project management and its leadership. in order to use organization assets and opportunities efficiently, it is necessary that manager implement a comprehensive multidimensional project portfolio management system that considers economic, social and technical details of ...