مطالب

Dans le but de déterminer le statut naturel de l’homme et de la femme, la présente étude a recouru à la méthode d’analyse du thème et du concept. C’est pour cette raison que les livres et les articles scientifiques rédigés dans les années qui ont suivi de près la révolution islamique, examinant la création de l’homme et de la femme dans le Saint Coran, la Thora et l’Évangile, ont fait l’objet d’études approfondies. Bien que diverses recherches ont été réalisées en rapport avec le sujet en question, cependant la recherche actuelle présente une certaine singularité par rapport à ces dernières. Les résultats de la présente recherche indiquent que l’homme et la femme partagent certains composants dans leur création tels que la substance de la création, le but de la création, les étapes de la création, les merveilles de la création et autres. Malgré cette similarité, les contenus des versets relatifs à la création énoncent les caractéristiques spécifiques de l’homme et de la femme, et révèlent la singularité et l’indépendance existentielles de ces derniers. De même, après l’analyse du processus de la création de l’être humain dans le Saint Coran (avec un regard particulier sur la bible), la singularité et l’indépendance existentielles de l’homme et de la femme, par rapport à leur similitude, sont attestées dans la source même de la création

This paper intends to model the volatilities of returns of 20 different cryptocurrencies using daily data from 08/03/2018 to 09/20/2022. The multivariate factor stochastic volatility model (MFSV) within the framework of the nonlinear space-state approach is used. In this method, the cryptocurrency return volatility is decomposed into volatility rooted in latent factors and idiosyncratic volatility, and the time-varying pairwise correlation and dynamic covariance matrix are estimated in four sub-periods. The MFSV model’s results revealed that each sub-period contains a distinct number of latent factors, 2, 5, 4 and 2, which generally have a favorable impact on all cryptocurrency volatilities. The time-varying positive correlations between the return volatility of all cryptocurrencies are confirmed. Indeed, the strongest pairwise correlations belong to Ethereum, Litcoin, EOS, and VET in each sub-period, respectively. The DOGE, DOGE, Filecoin, and XRP, on the other hand, showedthe weakest correlations . As the pairwise correlations of cryptocurrency volatilities get strenger, especially during descending periods, it seems that the benefits of diversifying a crypto portfolio are getting less and less over time.

Research shows that narcissistic traits such as self-conceit and entitlement are associated with delinquency and aggression in childhood and adolescence. Therefore, the purpose of the present study was to investigate the relationship between narcissism and tendency to abnormal behavior and assertiveness with the mediating role of mindfulness among active students. The present study was a cross-sectional study of correlation with structural equation modeling. The statistical population was all male students in the second year of high schools in Torbat Heydarieh city, Northeastern Iran, in the academic year 2022-2023. According to the Morgan table, the size of the statistical sample was estimated to be 200 active male students who were selected stratified random sampling method. The data collection tools included Baer et al.'s Five Facet Mindfulness Questionnaire (FFMQ) (2006), Narcissistic Personality Inventory (NPI-40) from Raskin and Terry (1988), Rostami and Rad's Abnormal Behavior Tendency Questionnaire (2012), and Kotler and Giura's Assertiveness Questionnaire. Data analysis was done using structural equations with PLS version 3 software. The findings showed that there was a positive and significant relationship between narcissism and tendency to abnormal behavior, and there was no significant relationship between assertiveness and tendency to abnormal behavior. The mediating role of mindfulness on the effect of assertiveness and the tendency to abnormal behavior was confirmed, but the mediating role of mindfulness on the effect of narcissism on the tendency to abnormal behavior was not confirmed. In order to reduce the tendency toward abnormal behavior in active students, it is recommended to strengthen assertiveness by mindfulness training, as well as designing educational and behavioral therapy programs to control narcissism.