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    • List of Articles Hamidreza Nematollahi

      • Open Access Article

        1 - The dark triangle of personality on knowledge concealment and organizational learning culture (case study: professors of Tehran University)
        seyed hamed hashemi mehdi ahmadighamshani Hamidreza Nematollahi shabnam zarjou
        The current research has been conducted with the aim of investigating the dark and dark aspects of personality on knowledge concealment with the mediating role of organizational learning culture. The current research is under the proof paradigm and in the applied resear More
        The current research has been conducted with the aim of investigating the dark and dark aspects of personality on knowledge concealment with the mediating role of organizational learning culture. The current research is under the proof paradigm and in the applied research group. The data collection tool in this research is 3 standard questionnaires. The reliability of the research tool has also been confirmed based on Cronbach's alpha of the dark triangle of personality (0.75), knowledge concealment (0.77), organizational learning culture (0.71), the statistical population of the research includes professors of Tehran University. The sample size in this research is equal to 187 people using Spss Sample power sampling software and the sampling method in this research is available sampling. The data analysis tool is SPSS and AMOS statistical software. According to the findings of the research, it can be acknowledged that the dark triangle of personality has an effect on the concealment of knowledge and 31% of the variance of knowledge concealment is explained by the component of the dark triangle of personality. The dimensions of the dark triangle of personality (Machiavellianism, narcissism, dimension of intellectual and psychological disorders) have an effect on the concealment of knowledge. 38% of the variance of the knowledge concealment component is explained by the dimensions of the dark triangle of personality (Machiavellianism, narcissism, intellectual and psychological disorders dimension). Organizational learning culture has a partial mediating role in the effect of the dark triangle of personality on knowledge concealment. Manuscript profile
      • Open Access Article

        2 - Identifying and Ranking Effectiveness Factors of E-Learning System
        Hamidreza Nematollahi ندا  محمداسمعیلی Arian  Gholipour saeed پاکدل
        Electronic education and learning is one of the subjects which has recently received great attention in the educational system. Hence it is important to investigate the factors that have a significant impact on the success of the electronic education process and lead to More
        Electronic education and learning is one of the subjects which has recently received great attention in the educational system. Hence it is important to investigate the factors that have a significant impact on the success of the electronic education process and lead to the improvement or reduction of the quality of this educational system. In this regard, the present study ought to provide a comprehensive classification of effective factors in the e-learning system by using the mixed method. First, this study by using the mixed method (theme analysis) method, tried to provide a comprehensive classification of effective factors in the e-learning system, and then by using TOPSIS method the factors were ranked. With regard to the goal, this was an applied research and in terms of time it is a cross-sectional. The participants in the research were employees, professors and students in different fields of Tehran University. 15 individuals were selected after theoretical saturation and the data was collected through semi-structured interviews. By analyzing the obtained data, 43 organizing themes were extracted from the codes, and with further consideration the researchers reached 6 main and comprehensive themes. As the result of ranking revealed, the factors including standardization of e-learning, content interaction, documentation and monitoring of education, and the factors of pedagogy and educational design have the greatest impact, and the factors including increase in perceived usefulness, personal and skill improvement, and network learning have the least impact. Manuscript profile