The present study is the result of a content analysis on the book“,Testing English Language Skills, From Theory to Practice”,written by Farhady, Jafarpour, and Birjandi. This book is one of the most widely-used textbooks selected by language instructors for the testing courses of TEFL, Translation, and English literature majors. Using McDonough, Shaw, and Masuhara’, s (2013) textbook evaluation framework, the authors carried out both internal and external evaluations of the claims made by the authors in the preface of the book. The claims included: using lucid language, comprehensive coverage, a desirable organization of the materials presented and a direct relevance to the Iran’, s context. Furthermore, the textbook was also analyzed based on its physical appearance, content, and methodology. The strengths and weaknesses in each domain were categorized and presented. At the end, some recommendations have been made to the authors, in case of any future editions of the textbook by the authors.

Sluggish Cognitive Tempo is used to describe a particular type of attention deficit, concentration, and slowness in information processing. The aim of this study was to investigate the psychometric properties of the Sluggish Cognitive Tempo Scale (SCTS) of the parent form among Iranian children. The present study is a descriptive study. A sample of 1700 people was selected from the provinces of Tehran, East Azerbaijan, West Azerbaijan, Kurdistan, Fars and Khorasan using cluster sampling method. 122 subjects were excluded from statistical analysis due to incomplete answers to the questionnaires and thus the final sample was reduced to 1578 parents. The confirmatory factor analysis method and internal consistency were used to compute the Sluggish Cognitive Tempo Scale factorial validity and reliability, respectively. Also, in order to examine the construct validity of the Sluggish Cognitive Tempo Scale, we computed correlations between different dimensions of Sluggish Cognitive Tempo Scale with Attention Deficit Subscale of Mental Health Assessment Questionnaire for Children and Adolescents. The results of statistical results showed that this scale has structural validity, criterion and convergence in Iranian society. The results indicate that the scale is three factors and also the validity of the scale using Cronbach's alpha method and retest test after Approved two weeks. According to the findings of the present study, the parent form of the Sluggish Cognitive Tempo Scale (SCTS) has a good validity and reliability and it can be used in research related to slow cognitive multiplication in Iranian society.

We address the throughput maximization problem for downlink transmission in DF-relay-assisted cognitive radio networks (CRNs) based on simultaneous wireless information and power transfer (SWIPT) capability. In this envisioned network, multiple-input multiple-output (MIMO) relay and secondary user (SU) equipment are designed to handle both radio frequency (RF) signal energy harvesting and SWIPT functional tasks. Additionally, the cognitive base station (CBS) communicates with the SU only via the MIMO relay. Based on the considered network model, several combined constraints of the main problem complicate the solution. Therefore, in this paper, we apply heuristic guidelines within the convex optimization framework to handle this complexity. First, consider the problem of maximizing throughput on both sides of the relay separately. Second, each side progresses to solve the complex problem optimally by adopting strategies for solving sub-problems. Finally, these optimal solutions are synthesized by proposing a heuristic iterative power allocation algorithm that satisfies the combinatorial constraints with short convergence times. The performance of the optimal proposed algorithm (OPA) is evaluated against benchmark algorithms via numerical results on optimality, convergence time, constraints’ compliance, and imperfect channel state information (CSI) on the CBS-PU link.

AbstractThe aim of this study was to investigate the validity, reliability and factor structure of the "How I Think" questionnaire to assess cognitive distortions in Iranian students. The present research design is descriptive and psychometric studies. The statistical population of this study included all male high school students in city Dezful in the academic year 1399-1400, from which 316 students were selected by multi-stage random sampling and completed the How I think and Bass and Perry Aggression Questionnaires (for Convergent validity). Factor analysis, Cronbach's alpha and Pearson correlation were used to analyze the data using SPSS and AMOS 20 software. The results of factor analysis showed that the questionnaire consists of six factors and has good fit indices. The convergent validity of this questionnaire indicated a satisfactory correlation between the dimensions of the scale "How I think" with the Aggression Questionnaire (p <0.01). Cronbach's alpha and Split- half coefficients for the whole scale and its dimensions ranged from 0.66 to 0.92.The conclusion is that the Persian version of the "How do I think" questionnaire for measuring cognitive distortions in Iranian students has acceptable psychometric properties and can be used as a valid tool in research, educational and clinical situations.

This study aimed to determine the role of emotional creativity and cognitive creative representation of the metacognitive skills. Statistical Society of Islamic Azad University Garmsar Branch, all students in the school year were 1388-1389. Using multistage random sampling of students in 400 different fields was selected. Research tools include questionnaire, metacognitive skills, Manavipour and Rohani, Abedi creativity testing and scale emotional creativity. Results showed that between creativity cognitive and emotional creativity there is a significant correlation. Cognitive Creativity 28 percent, and emotional creativity 48 percent of the variance of metacognition skills to explain. Regression results showed that 62 percent of the variance of metacognitive skills, creativity cognitive and emotional creativity representation of there. The comparison revealed that the role of metacognitive skills, creativity, emotional, cognitive creativity more. To the extent able to explain 20 percent more metacogitive skills are.