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On the temperature control in self-controlling hyperthermia therapy
, Article Journal of Magnetism and Magnetic Materials ; Volume 416 , 2016 , Pages 134-140 ; 03048853 (ISSN) ; Sharif University of Technology
Elsevier
Abstract
In self-controlling hyperthermia therapy, once the desired temperature is reached, the heat generation ceases and overheating is prevented. In order to design a system that generates sufficient heat without thermal ablation of surrounding healthy tissue, a good understanding of temperature distribution and its change with time is imperative. This study is conducted to extend our understanding about the heat generation and transfer, temperature distribution and temperature rise pattern in the tumor and surrounding tissue during self-controlling magnetic hyperthermia. A model consisting of two concentric spheres that represents the tumor and its surrounding tissue is considered and temperature...
A mixed methods approach to exploring grammar learning strategies in self-regulation task phases: Evidence from grounded theory and regression analysis
, Article Language Teaching Research ; 2022 ; 13621688 (ISSN) ; Ranjbar, M ; Sharif University of Technology
SAGE Publications Ltd
2022
Abstract
While research into various dimensions of language learning strategies has been thriving over the recent years, grammar learning strategies (GLS) have largely remained under-explored. The present mixed methods research aimed to explore GLS in the three stages of classroom grammar tasks, while striving to determine the sequence of GLS and their contribution to grammar proficiency. In the qualitative phase, 13 participants partook in stimulated recall and semi-structured interviews after completing consciousness-raising (CR) tasks. Then, the grounded theory (GT) methodology was applied to conceptualize a theoretical model. For the quantitative phase, a modified version of Pawlak’s Grammar...
Patterns of Teacher Mediation and Learner Reciprocity in a Dynamic Assessment Approach to L2 Listening Comprehension
, M.Sc. Thesis Sharif University of Technology ; Tajeddin, Zia (Supervisor) ; Jahangard, Ali (Co-Advisor)
Abstract
The gaps in the existing studies on L2 listening comprehension have been highlighted in the literature of second language learning. Accordingly, the necessity of the qualitative investigations in this field has been frequently addressed by the scholars (e.g., Vandergrift, 2007). The primary purpose of this study was to investigate the use of dynamic assessment (DA) in L2 listening comprehension within a group of six advanced EFL learners to extract the patterns of teacher mediation and learner reciprocity moves through a dyadic examination of their interactions. The examination of listening self-regulation was another incentive behind this study. This research also investigated learners’...
Development and Validation of an EFL Self-Regulated Learning Questionnaire
, M.Sc. Thesis Sharif University of Technology ; Salehi, Mohammad (Supervisor) ; Rahimi, Ali (Co-Advisor)
Abstract
Self-regulated learning, though having swept educational psychology's literature like a tidal wave (Boekaerts, 1999), and also, compared to other constructs such as metacognition and learning strategies, has remained comparatively uncharted in L2 research. One preliminary step to chart this concept is to develop questionnaires for it. With these and other things in mind, the principal purpose of this study was to develop a questionnaire in English and Persian to measure self-regulated language learning capacity and behavior of Iranian EFL learners. The development of the questionnaire was guided by two pilots (412 participants), content validation through expert judgment, cognitive...
RANS simulations of the stepped duct effect on the performance of ducted wind turbine
, Article Journal of Wind Engineering and Industrial Aerodynamics ; Volume 145 , October , 2015 , Pages 270-279 ; 01676105 (ISSN) ; Alimirzazadeh, S ; Rad, M ; Sharif University of Technology
Elsevier
2015
Abstract
With the rise in oil price and population growth, renewable energies are assumed to be the main source of energies for the next generation. Wind as a natural, eco-friendly and renewable source of energy has been at the center of concentration for decades. Recently there has been some ideas regarding the self-regulating urban wind turbines. Researchers have shown that a proper enclosure increases the wind velocity and therefore more torques can be exerted on the rotors, therefore more power can be generated. These enclosures are light and cheap, therefore they are applicable and effective. In the present study, an enclosure was modified to increase the exerted torque with implementing a step...