مطالب

This study was conducted to determine the stock portfolio with the best return and low-risk investments using momentum-contrarian strategies (MCSs). The momentum-Contrarian strategy is one of the well-known models to construct the portfolio which suggests buying the stocks with the best performance (the winner stocks) and selling the stocks with the worst performance (the loser stocks). The optimal values of the portfolio's objective function and the weight of all assets in the portfolio that are not necessarily the same are calculated by defining a nonlinear multivariate optimization model combined with momentum-contrarian strategies (MCSs). The return information of companies listed on the Tehran Stock Exchange from 2014 to 2019 was used to select the best optimal portfolio. The results confirmed the stability in the profitability of the contrarian optimal portfolio with minimum risk compared to other optimal portfolios. Furthermore, through MATLAB software the optimal weight of assets in the optimal portfolio is calculated based on statistical data.

Social networks advertisements can be employed as a powerful means of communication to achieve goals such as sales, profitability and reinforcing brand image. Organizations managers have established a department titled “public relations” in their organizations, through which they communicate with individuals inside and outside the organization, so that they can fulfill their goals at lower costs and within shorter time by informing and persuading those individuals. In this regards, the present study is aimed at evaluating the extent to which public relations of private organizations employ social networks to introduce their products and services. Research population consists of managers and public relation experts of private sector’s organizations in Yazd, Iran. The present study takes a survey method and is regarded as field-work research. Sampling method is based probability and availability. Due to the limited population, 76 individuals were selected as the sample through limited population formula. Data was analyzed via Smart-PLS. results reveal that public relations of private organizations employ social networks at an optimal and acceptable level to introduce their products and services. Hence the hypothesis of the study is confirmed.

Organizational DNA expresses a method of investigation, thinking, reflection and thought about organizations, which examines the patterns of organizations, management practices, leadership style and other concepts related to the organization. Organizational DNA uses very diverse approaches to understand and recognize the organization, instead of organizational models and forms, by examining issues such as teamwork, decision-making, and development and improvement of human resources as separate or at least independent variables. In this research, by using the theoretical framework and using quantitative and qualitative methods, it has been done to identify the dominant DNA in Tocafulad Holding companies and determine the relationship model of hidden components using covariance analysis. The statistical population includes 435 employees of Isfahan Tokafulad companies and 6 company experts who used a mixed or mixed design to conduct the research. The technique of structural equations has been used to improve the model and evaluate the components and indicators to check and identify the model. In order to answer the research question, the steps are: 1) presentation of the conceptual model of the relationship between the corporate DNA and the investigated components, 2) quantitative evaluation of the components and indicators of the model, 3) determining the mutual influence of the hidden variables and the obvious variables of the model and 4) the relationship Between the apparent variables of the components with each other and the verification of the initial conceptual model has been carried out and then the model has been improved and finally the dominant DNA has been determined. The research showed that semantic DNA with a factor load of 0.93 is the dominant DNA in 4 out of 6 companies under investigation. It was also found that planning and payment system are the least important and change processes are the most important in line with the improvement model. In the improved model based on covariance analysis, the mutual effects of payment system and planning with mission, leadership style with teamwork, performance management with decision-making, interpersonal relations with change processes and change processes with work group should be considered.

In the 21st century, the meaning of places is essential to people. Meanings have gained symbolic importance through tourism heritage. Tourism is a powerful force  in shaping the world and our understanding of different cultures, people, and  places. This research investigates the complexities of religious tourism and the  management of religious destinations. It obtains criteria for managing religious  goals with a detailed look and uses the descriptive-analytical method based on  library documents and the opinion of research experts. Then, using research experts  and ISM-PLS hybrid approach, a three-level framework for managing religious  goals in Yazd city has been presented and analyzed. The results showed that the  government's decisions and actions were the most effective criteria. The ultimate  goal was to create a sense of trust and security among religious tourists. It is hoped  that the findings of this research will be a starting point for managing religious  tourism destinations and a guide for examining the complexities of Islamic tourism  destinations and their management.

Depuis sa première apparition jusqu’à nos jours, la représentation littéraire de la ville iranienne a connu une évolution considérable. Elle s’éloigne de la conception traditionnelle polarisant la ville en utopie et dystopie et se penche sur une interprétation postmoderne considérant la ville comme un espace-temps polyphone. Dans ce sens, le devenir des espaces urbains est particulièrement important dans la mesure où il configure le devenir socioculturel de certains discours courants dans la société iranienne. A travers trois œuvres persanes, Tel qu’il était, Couleur de corbeau et Grande Route, qui présentent des exemples parlants de la convergence des devenirs spatio-temporel et socioculturel, nous nous proposons, dans la présente recherche, d’étudier la question de spatialisation des discours sociaux. Pour ce faire, nous adopterons la géocritique en tant que cadre méthodologique et nous tenterons de répondre à quelques questions fondamentales qui mettent en relief différents aspects de la problématique : En quel sens le corpus choisi propose-t-il une nouvelle interprétation de la dichotomie « centre-ville/périphérie » ? Comment la pluralité des espaces urbains peut-il traduire le positionnement social de différentes générations iraniennes ? Et enfin, comment la ville fictionnelle laisse-t-elle son impact sur la ville réelle et parvient-elle à déplacer les frontières imposées par la réalité sociale ?

Théorisé d’abord par Freud, le complexe d’Œdipe est l’image universel du désir inconscient que les enfants éprouvent envers leur parent de sexe opposé. Cette théorie sera reprise plus tard par Jacques Lacan qui la transformera en s’appuyant sur la formation du « Moi » signifiant pour lui la relation entre trois instance imaginaires : la mère, l’enfant et l’objet du manque. En effet, Lacan considère le complexe d’Œdipe en tant qu’un moyen pour mettre en cause la formation sociale, ainsi que « les complexes familiaux ». Choisissant comme cadre de notre étude, la théorie psychanalytique lacanienne sur le complexe d’Œdipe, nous avons abordé certaines œuvres d’Amélie Nothomb, auteure belge francophone : Frappe-toi le cœur, Tuer le père et Les prénoms épicènes dans l’objectif de discerner le complexe d’Œdipe chez les personnages, les complexes familiaux dans ses romans et la cause de son choix dans la création de ses personnages. L’image des pères autoritaires, la naïveté de certaines mères, l’instrumentalisation des enfants par les parents, le désir de l’identification au père et la possession de la mère sont des signes du complexe d’Œdipe traditionnel, employés en vue de mettre en scène la formation du sujet dans la société moderne.