فهرست مطالب علی حاجی زاده

Due to the very high importance of gas turbine in electricity production and also its increasing development in the electricity industry, one of the most important methods to increase the efficiency of gas turbine blades is to add thermal barrier coating to their outer surface. These coatings improve the cooling of gas turbine blades, but they also have disadvantages such as roughness of their surface cause to the separation of the hot fluid flow around the turbine blades. The rough surfaces of thermal barrier coatings should be used optimally and purposefully. In this research, using commercial software of Fluent, this type of coating has been investigated and analyzed in order to find the most optimal possible mode for its use. The influence of surface parameters such as roughness, thickness and material of thermal barrier coatings have been investigated. The most optimal state for the mentioned parameters are: 0.1 mm, 0.38 mm and 2.7 W/m.K respectively.

The history of Persian literature owes the immortality and influence of its pure didactic and mystical topics in its various forms to the form of “masnavi” poetic genre. Masnavi structure stands as one of the most extensive forms of Persian poetry due to its distinctive feature in rhyming, witnessing the creation of some of the greatest literary masterpieces in the Persian language. The most effective approach to understand and fully comprehend these compositions and to articulate the points of divergence and commonality among them, is to delve into their form and structure. This research undertakes the examination of the external aspects of masnavis from the studied period and delves into the internal exploration of these collections, focusing on their form and structure. Accordingly, the text (the central core) and paratexts (preface and conclusion) of long didactic and mystical masnavis until the end of the seventh century AH are discussed and analyzed. The purpose of this article is to examine the form and shape prevailing in the text and paratext of long didactic and mystical poems in terms of their adherence to the literary traditions of the poets’ era. The authors, recognizing that literary works, as integrative discourses, presupposes the existence of a beginning, middle, and end, endeavor to examine the functions of paratextual elements in seven didactic and mystical masnavis (Hadigat al-Hadigat, Makhzan al-Asrar, Manteq-o-tteyr, Mosibat-Nameh, Ilāhī-Nāma, Bostan and Masnavi). Through the examination of these paratexts, the authors aim to highlight the functions envisioned for the use of these elements and articulate the unique features of Rumi’s Masnavi as the exemplar of masnavis.

In this study,, two independent sample t-tests, one-way ANOVA and ETA correlation test were used to significantly determine the role of research indicators. The maps and tests used in this research were prepared using ARC GIS, Envi 5.3 and Spss software. The results show that there was a significant difference (P <0.05) between the levels of physical development of the studied cities and the altitude of 1800-1200 m, less than 5% slope, loamy and clay soils and proximity to water resources (more than 10 m). Other groups had the same variance and the differences were not significant. The correlation coefficient of ETA between urban development levels and altitudes of 1800-1200 m was equal to 0.762, the correlation coefficient for slopes less than 5% was equal to 0.749, this value was equal to 0.623 for loamy and clay soils and finally for water sources the correlation coefficient was equal to 0.191. This indicates a strong correlation between urban development and expansion and altitude of 1800-1200 meters, slopes of less than 5%, loamy and clay soils and also the static level of more than 10 meters of groundwater had been introduced as a factor in the physical development of cities. Water resources with relatively weak correlation, in the first place resulted in the physical development and expansion of cities and in the second place were considered as a limiting factor in the physical development of cities due to destructive and dangerous floods.

The deployment of police stations in cities is one of the important criteria in ensuring the security of citizens. Suitable deployment of these stations allows them to reach the site of crisis as soon as possible in the event of a crisis. One of the existential dimensions of cities and human societies is the existence of order and security especially in the conditions of occurrence of social and natural crises which pay attention to this matter is very important. The first stage was to identify and study the effective factors in locating of the police stations and the military centers. In this research, due to the criteria of the installation, educational, cultural, administrative, recreation, religious, sports, commercial, privacy centers, the fuzzy model was used for locating, then, relevant layers have been prepared for each of the effective factors in locating police stations and the results, with regards to each of the criteria, show that districts 3, 7 and 12 are suitable for police stations and, also, districts 1, 9, 10 and 11 are unsuitable and unsafe for police stations