a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

Introduction: Digitalization of education is considered  as  a major reforming in higher education. E-learning programs are increasingly seen as a way to reform in medical sciences education, giving access to ongoing learning and training without any time or geographical barriers. Technology is a powerful tool for effective teaching and deep learning. Therefore, the aim of this paper is evalua...

in this thesis, a structured hierarchical methodology based on petri nets is used to introduce a task model for a soccer goalkeeper robot. in real or robot soccer, goalkeeper is an important element which has a key role and challenging features in the game. goalkeeper aims at defending goal from scoring goals by opponent team, actually to prevent the goal from the opponent player’s attacks. thi...

the purpose of this study was to examine the comparative effect of story retelling and role playing on efl learners’ vocabulary learning and reading comprehension. to carry out the purpose of the study 90 female learners of tabarestan language school located in noshahr were non-randomly selected. they took pet test and among these 90 participants 62 students were selected as homogenous learners...

this study was an attempt to investigate the effect of subtitling on vocabulary learning among iranian intermediate students. to find the homogeneity of the groups, tofel test was administered to student in kish mehr institute in garmsar. after analyzing the data, 60 participants (female students) who scored within the range of one standard deviation above and below the mean, were selected as h...

Introduction: Using e-learning in medical universities grows fast and the quality of its content is considered an important issue. The aim of this study was to investigate the effectiveness of e-learning content of Faculty of Nursing and Midwifery at Mashhad University of Medical Sciences. Methods: This descriptive study investigated all faculty members of Faculty of Nursing and Midwifery (n =...

Introduction: Universities have also used online courses as a tool to establish lifelong learning among students. Lifelong learning has become part of the way of life due to the dynamic nature of modern society. The community's demand for lifelong learning will be supported by the growth of online learning courses. Universities can reduce the cost of education providers by developing distance l...