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This article tries to identify the common stability themes and factors in the poems of Shamlu and Darvish. For doing so, the poems of these poets were investigated in descriptive and analytical way. Comparative study of Shamlu and Darvish poems in the scope of stability poetry and explaining the common elements and analysis of the stability themes from content and linguistic perspective will be effective in analysis of the stability poetry in the world literature. In addition, this analysis helps us to identify these poets’ ideology and thoughts in detail. Therefore, the common elements of stability poetry in the world literature are recognized by broad research on the resistance literature of the nations. The poems of Mahmud Darvish and Ahmad Shamlu contain numerous common themes on resistance literature such as patriotism, confronting oppression and liberty and etc. The conditions of both poets have influenced their poetry and both of them have expressed their ideals ideologically because of tyranny and suffocation.

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In recent years, the term "customer relationship management" has attracted much attention in the field of marketing and commerce. This study aimed to an analysis of the effect of customer relationship management dimensions on its success in service organizations with a meta-analysis approach. For this purpose, from 62 studies (from 2014 to 2018), 18 methodological and research objectives were accepted and meta-analysis was carried out on them. The research tool was a meta-analytic checklist. The findings showed that the propagation bias in the analyzed analysis is intangible. Also, the size of the impact of customer relationship management dimensions on the success of customer relationship management in service organizations was found to be 0.59 (Sig: 0/001). Accordingly, customer orientation (with an influence size of 0.601) and customer satisfaction (with a dependence size of 0.65) had the greatest impact on customer relationship management. The effect size according to Cohen's table is too high. We conclude that businesses are based on customer orientation and customer satisfaction so that the development and provision of services without considering this principle is not only difficult but impossible. Therefore, service organizations should focus all their activities and capabilities on customer satisfaction, because customers are the only source of return on investment. However, competitive markets today require all organizations to be customer-oriented.

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In recent years, development of polymer electrolyte membrane fuel cells (PEMFCs) has been considered to generate electricity and heat. Among main components of PEMFCs, bipolar plates (BPPs) have significant influence on cost and performance of the system. Metallic BPPs, formed using thin sheets, have been developed as alternative to conventional graphite plates because of advantages such as suitable cost, mechanical strength and power density. Flexibility of the sheets and spring back during forming process make dimensional errors inevitable and lead to inappropriate contact pressure distribution between BPPs and gas diffusion layer (GDL), resulting in decrease of fuel cell performance. Excessive accuracy in BPP production leads to increase the final cost and decrease the general usability of the technology. Therefore, to reduce unnecessary costs, managing design process and improving efficiency, analysis of BPP dimensional errors is done using finite element method and Monte Carlo simulation (MCS). First, contact model of the metallic BPP and GDL is developed and heights of each channel and each rib of BPP are fully parameterized due to stochastic variations of dimensional errors with normal distribution. Then, contact pressure distributions of GDL (Pave, Pstd) for different dimensional errors are obtained by MCSs. Increasing dimensional tolerance from 0.015 mm to 0.075 mm, average contact pressure (Pave) has decreased by 11% and standard deviation of contact pressure (Pstd) has increased up to 90%. Namely desirable distribution of GDL pressure is reduced by increasing the dimensional error and suitable dimensional tolerances for BPPs can be determined according to engineering requirements.

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In this study, the character of Wahab in the novel "House of the Idrisians" has been investigated based on the theory of Jeffrey Young. The character of Wahab is analyzed based on the early maladaptive schemas and it is shown how the early maladaptive schemas affect Wahhab's perception of himself and others and how control Wahhab reaction to the environmental events. This article has tried to identify the most important causes of incompatible schemas in the character of the Wahhab and to determine which incompatibility schemas are more pronounced in Wahhab character. The method of this research is descriptive-analytical and the research data have been investigated using content analysis and documentary method. The results showed that the most important causes of the emergence of incompatibility schemas in Wahab are carelessness and neglect of her since his birAth, thus the most important emotional need, which includes the need for security, stability, love and acceptance, has not been satisfied in him. Among the five main schematic domains divided by Young, the second aspect" autonomy and impaired functioning" is more significant in the character of Wahhab and this aspect has emerged in the character of Wahab in the form of" dependency and undeveloped self, entangled and defeated".