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Investigating and studying the political relations of countries in the international arena, especially the countries of a particular region, is of particular importance. Such studies investigate issues related to the interactions between states and factors affecting political relations between them from different perspectives. Geopolitical studies are among such studies which provide national interests and national security for countries to identify political and geographical factors and variables affecting the political relations of states and accordingly, to investigate the regional and global impacts of these relations. By looking at the political relations between Iran and Syria, as two important non-bordering Middle East countries with special geopolitical and geostrategic importance in the axis of Islamic Resistance, which plays an essential and decisive role in regional interactions and geopolitics which is significantly impacted by these relations, we can observe fluctuations due to the influence of geopolitical, political and economic factors in the interactions between them. The current study tries to examine the impact of major geopolitical factors between the two countries and finally answer the following question: What predictable prospect exists for Iran-Syria relations in the future"? In this regard, using a descriptive-analytical research method, we will test the hypothesis that "the future of Iran-Syria relations depends on the future of Syria and its future positioning." This research investigates other aspects of the future effect of the two countries' relations on the region and, like any other research studies, there were limitations and obstacles.

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Pacts can assist member countries in achieving foreign policy objectives and securing national interests. These pacts have diverse and numerous functions, influenced by geopolitical indicators to varying degrees. Naturally, their impact extends across national, local, regional, and transregional levels. Therefore, this research focuses on examining and analyzing the geopolitical indicators used in power calculations. The functions of pacts can manifest in significant political, security, economic, commercial, cultural, and social dimensions, and they can be applied in regional pacts.
This analytical-descriptive study relies on library resources, documents, articles, and relevant websites for data collection. Additionally, a structured questionnaire was prepared to gather experts' opinions on the analysis of geopolitical indicators for membership in regional pacts. Finally, the collected data underwent analysis using SPSS software and relevant tests. The study also strives to weigh countries' membership in regional pacts based on political, security, economic, commercial, cultural, and social components, and the impact of geopolitical indicators at various levels on the countries' membership process to regional pacts.

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Heat transfer through the internal supports of the cryogenic fluid tanks is an important issue in the tank design and manufacture. On the other hand, the internal supports strength should be enough to stand safely against the forces applied to the internal tank. From the heat insulation point of view, most of the polymers are suitable materials to use in the internal supports. But the low mechanical strength of the most of the polymers limits the life of the supports made from polymers. In this paper, a new composite support made from steel and polymer is presented for the internal supports. Multilayered design of the steel part of the presented supports controls the heat transfer through this part by adding more thermal contact resistance (TCR) to the heat flow path. An analytical model is developed to calculate TCR between layers of the steel part at various pressure and temperature conditions. A thermo-mechanical coupled finite element (FE) model is developed for the proposed support and solved by ANSYS FE code. Temperature distribution and heat flux of the presented support are investigated by FE analysis results. Heat flow through the new support design is compared with the heat flow of the supports constructed with polymer blocks. Comparison of the heat flow results shows that the amount of heat transferred to the cryogenic tank through the internal supports in the static loading condition decreases when using proposed composite design instead of polymer blocks.