درخت حوزه‌های تخصصی

The emergence of celebrities dates back to the mid-19th century, with some scholars tracing their origins to even earlier periods. However, it was the commercialization of the Internet in the 1990s, and more significantly, the rise of the social media industry in the mid-2010s that gave birth to what is now commonly referred to as the "celebrity industry." This industry has experienced a continuous upward trajectory ever since. While individuals with a discerning outlook may perceive celebrities, especially microcelebrities, as superficial and lacking in merit for societal attention, it is essential to recognize their pivotal role in reshaping global economic dynamics. This paper aims to elucidate the undeniable influence of celebrities, particularly microcelebrities, in stimulating ordinary individuals to allocate their hard-earned resources toward non-essential expenditures. Indeed, as the concept of 'consumption' itself has evolved into a potent driving force, celebrities' impact transcends economic domains, extending into the realms of society, personal life, culture, and even politics. This paper endeavors to elucidate the multifaceted consequences of this phenomenon.

Purpose: In this research, the influencing factors on the behavior of human resources in the marketing department and human resource management policies and their relationship with the strategies of this department have been examined in order to identify the factors that are related to the superior performance of this department. Methodology: The data collection tool was semi-structured interviews were conducted using a combination of purposive (judgmental and quota) and theoretical sampling. In this regard, there were 36 elites in the statistical population of this research. Data analysis was done in three stages open coding, axial coding, and selective coding, and based on that, a qualitative research model was presented. Findings: The results of the research led to the extraction of 669 open codes, 160 concepts and 40 categories in the form of a paradigm model include the central category (strategic management of human resources in marketing, culture, improvement and correction, coherent and aligned systems), causal conditions (control of destructive effects), strategies (job satisfaction, commitment, trust, perceived organizational support, motivation, justice, reward, employee participation, loyalty, empowerment, empowerment, green insight into human resources and marketing), the prevailing context (demographic characteristics, psychological characteristics, organizational structure, strategy, organizational culture and supply, technology in use). Conclusion: finally outcomes (superior performance, organizational citizenship behavior, key work behaviors and production axis, the effects of human resource strategies, environmental thinking and green performance) were presented.

Literary tourism is a sort of cultural tourism that deals with places and occasions from fictional texts and the lives of their authors. This might be related to a novel or a writer, such as going to a poet's grave. Literary tourism is, in fact, a kind of Tourism that adds to the knowledge and information of tourists and is a kind of combination of entertainment and education helping a lot to know more about society and culture as well as helping nations and cultures becoming closer and closer to each other at the international level. The present study is applied and descriptive survey research in terms of purpose and method, respectively. The statistical population of the study is literary tourists includes the city of Shiraz. All statistical analyses were performed using SPSS and AMOS software programs, and a regression method was exerted to test the path analysis of hypotheses. Findings of this study indicate that literary tourism has a positive, significant effect on increasing re-visit tourism destination through the originality of the tourism destination brand, brand love, attachment, nostalgia, and loyalty of attitude and action.  

Purpose: With the increase of problems and the complexity of organizations, the need to provide better solutions and use more powerful tools of strategic planning is evident because managers with strategic thinking and a better understanding of the strategic plan will perform more effectively. It can be said that strategic thinking is considered as a supplement to strategic planning, a suitable approach to "leadership" of the organization and can help in systematically dealing with problems, understanding opportunities, optimal allocation of scarce resources and achieving the desired results. In view of this importance, the current research aims to design a strategic thinking competence assessment model with the approach of developing organizational flexibility in National Gas Company of Iran.Method: This research is applied in terms of purpose and was done with qualitative approach based on grounded theory method. Sampling of the research was done using snowball method (chain reference). For this purpose, qualitative data was collected, which led to the identification of many aspects of the phenomenon and the possibility of developing a conceptual research model. The data collection method is library studies, perusal of high-level documents, and in-depth and open interviews. The statistical population of this research consisted of specialists and experts in the field of management and strategic thinking, of whom 12 people were investigated. In the process of conducting this research, the interviews continued until theoretical saturation was observed.Findings: The findings showed that six main categories are effective on the evaluation of strategic thinking with an organizational flexibility approach, which are: foresight, strategic determination, systemic attitude, innovation and creativity. The results show that the validity of the model is confirmed and the six obvious variables (six dimensions) explain the latent variables of strategic thinking competency assessment. According to the direction of all the relations between the manifest variables and the latent ones, , all the relations are aligned and direct.Conclusion: According to the amount of standardized factor loadings, the dimension "Foresight (AN)", with a factor loading of 0.88, is the most reliable indicator belonging to evaluation measurement.

As a trading strategy, pairs trading is performed based on the arbitrage opportunities extracted from statistical models. It is an outcome of the distance between an asset pair and the equilibrium state. Consequently, selecting a pair with the potential to form long-term relationships and reverting to the mean is the main challenge associated with pair trading. Cointegration is one of the most famous statistical tests for selecting a pair's trading. The present study uses Empirical Mode Decomposition (EMD) to decompose the time series of an asset pair price into its constituent elements (intrinsic mode functions). This study examined the property of cointegration across different levels and the corresponding levels of 2- time series to find the cointegration pairs in different decomposition levels and finally examine the resulting profitability. To this end, the profitability of the pairs trading system related to 14 stocks of the Tehran Stock Exchange throughout 2012-2021 was investigated based on EMD. The results showed that the outputs are pretty noticeable for the first level of decomposition (the first intrinsic mode function), and the number of trading opportunities increased by more than two times compared to the normal pair trading with cointegration; the daily returns increased by four times; and the Sharpe ratio increased by about two times compared to the normal pairs trading. The system formed based on the second mode function also outperformed the normal cointegration, and the performance of the third intrinsic mode function is almost on par with that of cointegration. Moreover, the mean transaction duration decreased remarkably in the first and second mode functions.