Presenting a Suitable Quick Construction Pattern Using Prefabricated Components in Critical Conditions

Every year, many people in the world lose their homes due to natural disasters such as earthquakes, floods and so on. In critical situations, the use of prefabricated parts in the buildings has many technical and economic advantages. Hence, today, this technology is widely used in the industrialized societies. The purpose of this research is to provide an appropriate model for speeding up the process of constructing buildings using prefabricated parts in critical conditions. To do this, Analytic Network Process (ANP) approach has been used to select the best option for speeding up construction projects using prefabricated parts and in critical situations. In this study, the intended criteria are quality, time, cost, and strength. The options that we should compare and the best option among them, according to the criteria mentioned, are Lightweight Steel Frame (LSF) parts, steel parts and concrete parts. In order to find this prioritization, the viewpoints of civil engineers and construction experts have been used. It should also be noted that for the ANP method, the Super Decisions software has been used

Diseño y explicación del Modelo de Productividad Cuántica en el Ministerio de Deportes y Juventud de la República Islámica de Irán

This study aimed to design a quantum productivity model in the Iranian Ministry of Sport and Youth. The sample was composed of mana-gers and staff of the Ministry of Sport and Youth of the Islamic Republic of Iran. In the first part of the study, 14 people were interviewed through thematic analysis method. In the second part, 188 people completed the questionnaire. The research instruments were an interview and a question-naire of quantum productivity elaborated ad hoc. Data analysis was perfor-med with WarpPLS software. After analyzing the content network, coding and screening, 8 main components of quantum productivity were finally extracted. The prediction power of the designed model was analyzed using the coefficient of determination (R2) for the dependent variables, and it was concluded that the structural model of the present study has sufficient predictive power. Considering these results, it is recommended the use of this quantum productivity model in sports organizations.Resumen: Este estudio tuvo como objetivo diseñar un modelo de productividad cuántica en el Ministerio de Deporte y Juventud de Irán. La muestra estuvo compuesta por gerentes y personal del Ministerio de Deportes y Juventud de la República Islámica de Irán. En la primera parte del estudio, 14 personas fueron entrevistadas a través del método de análisis temático. En la segunda parte, 188 personas completaron el cuestionario. Los instrumentos de investigación fueron una entrevista y un cuestionario de productividad cuántica elaborado ad hoc. El análisis de los datos fue realizado con el software WarpPLS. Después de analizar la red de contenido, la codificación y screening, finalmente se extrajeron 8 componentes principales de productividad cuántica. El poder de predicción del modelo diseñado se analizó utilizando el coeficiente de determinación (R2) para las variables dependientes, y se concluyó que el modelo estructural del presente estudio tiene suficiente poder predictivo. Teniendo en cuenta estos resultados, se recomienda el uso de este modelo de productividad cuántica en organizaciones deportivas

Preference of Educational Philosophy and Philosophical Mindedness of Iranian Physical Education and Sport Science Lecturers

The aim of this study was to investigate educational philosophy and philosophical mindedness of Iranian physical education and sports science lecturers (state-run Universities and Islamic Azad Universities). 150 questionnaires were randomly distributed among them, 123 filled questionnaires returned and finally 98 were confirmed. Two major instruments of Philosophy Preference Assessment (PPA) constructed by Wiles and Bondi (2010) with Cronbach’s alpha = 0.859, and Philosophical Mindedness (PM) constructed by Soltani (1996) with Cronbach’s alpha = 0.86 based on Smith model were used to examine the research hypotheses. The results showed that experimentalism and realism were the first and second educational philosophy of Iranian physical education lecturers, respectively (p = 0.001). Also, comprehensiveness, penetration, and flexibility are the first, second, and third philosophical mindedness preference, respectively (p = 0.001). It is difficult for many people to build their beliefs based on a philosophical thought and special philosophical principles; therefore eclecticism is the combination of concepts from philosophical aspects in form of a harmonic belief. Thoughtful combination of beliefs builds a mature philosophical viewpoint. Also, it seems that it is necessary for lecturers to have comprehensiveness, penetration, and flexibility equally and consonantly, so we can say that they were equipped with philosophical mindedness

Effective Gap Size Index for Determination of Optimum Separation Distance Preventing Pounding between Buildings during Earthquakes

Seismic excitations may lead to collisions between adjacent civil engineering structures, causing major damage. In this paper, an effective equation for calculating the gap size index is proposed so as to provide the optimum separation distance preventing structural pounding during different earthquakes. Evaluation of the best prediction of the required separation distance between two adjacent buildings was carried out by using the lumped mass multi-degrees of freedom models of structures. A special computer program was used to perform dynamic analyses in order to confirm the accuracy of the proposed formula. For this purpose, several different models of buildings with various properties under different earthquake excitations were analyzed. The results of the study clearly show that the proposed formula for the gap size index (based on vibration periods and damping ratios of buildings) is effective and it allows us to calculate the optimum separation between adjacent structures preventing their pounding during different earthquakes

Evaluation of Odontogenic Tumors Frequency in Biopsies Sent to Isfahan, Shiraz and Yazd Dental Schools

Odontogenic cysts and tumors are lesions found in the upper and lower jaw and oral soft tissue. The understanding and correct diagnosis of odontogenic tumors is essential because they can be invasive or recurrent in nature and evenrarely show malignant changes. The aim of this study was to evaluate the frequency of odontogenic tumors in Isfahan, Shiraz and Yazd cites.Materials & Methods:This is a cross-sectional descriptive-analytical study that was performed in the mentioned centers. The records of registered samples from the first year of establishment to 2018 have been reviewed which is approximately 18,000 cases. Samples data were extracted and recorded based on sex, age, jaw and location of involvement in affected jaw. Data were analyzed using descriptive statistics and Chi-square test (p value < 0.05).Results:In this study, a total of 498 odontogenic tumors were evaluated. The number of odontogenic tumors in Isfahan, Shiraz and Yazd cities was 313, 130 and 55, respectively. The mean age of the patients was 30.1 ± 15.9 and most of the patients were in the age group of 20 to 40 years and 53.4% were female. The most common sites of involvement were the right mandibular (29.1%) and then the left mandibular (28.3%) and the most common tumor was ameloblastoma (50.2%) and then complex odontoma (16.7%).Conclusion:Due to the frequency observed for odontogenic tumors, understanding the clinical and pathologic features of these lesions is essential for rapid and appropriate diagnosis and treatment

An ANN-Based Approach for Prediction of Sufficient Seismic Gap between Adjacent Buildings Prone to Earthquake-Induced Pounding

Earthquake-induced structural pounding may cause major damages to structures, and therefore it should be prevented. This study is focused on using an artificial neural network (ANN) method to determine the sufficient seismic gap in order to avoid collisions between two adjacent buildings during seismic excitations. Six lumped mass models of structures with a different number of stories (from one to six) have been considered in the study. The earthquake characteristics and the parameters of buildings have been defined as inputs in the ANN analysis. The required seismic gap preventing pounding has been firstly determined for specified structural arrangements and earthquake records. In order to validate the method for other structural parameters, the study has been further extended for buildings with different values of height, mass, and stiffness of each story. Finally, the parametric analysis has been conducted for various earthquakes scaled to different values of the peak ground acceleration (PGA). The results of the verification and validation analyses indicate that the determined seismic gaps are large enough to prevent structural collisions, and they are just appropriate for all different structural arrangements, seismic excitations, and structural parameters. The results of the parametric analysis show that the increase in the PGA of earthquake records leads to a substantial, nearly uniform, increase in the required seismic gap between structures. The above conclusions clearly indicate that the ANN method can be successfully used to determine the minimal distance between two adjacent buildings preventing their collisions during different seismic excitations

Early Cretaceous migmatitic mafic granulites from the Sabzevar range (NE Iran): Implications for the closure of the Mesozoic peri-Tethyan oceans in central Iran

The ophiolitic m\ue9lange of the Sabzevar Range (northern Iran) is a remnant of the Mesozoic oceanic basins on the northern margin of the Neotethys that were consumed during the Arabia-Eurasia convergence history. Occurrence of km-scale, dismembered mafic HP granulitic slices is reported in this study. Granulites record an episode of amphibole-dehydratation melting and felsic (tonalite/throndhjemite) melt segregation at c. 1.1 GPa and 800 \ub0C. In situ U(-Th)-Pb geochronology of zircon and titanite grains hosted in melt segregations points to an Early Cretaceous (Albian) age for the metamorphic climax. Results of this study (i) impose reconsideration of the current palaeotectonic models of the Neothetyan convergent margin during the Early Cretaceous and (ii) argue that punctuated events of subduction of short-lived back-arc oceanic basins accompanied the long-lasting history of the Neotethyan subduction in the region. \ua9 2009 Blackwell Publishing Ltd

Geochronology and geochemistry of rhyolites from Hormuz Island, southern Iran: A new record of Cadomian arc magmatism in the Hormuz Formation

Hormuz Island, a salt-gypsum dome in the Persian Gulf in southern Iran, is a complex halotectonic melange comprising evaporites, carbonates, volcanic and volcaniclastic rocks, as well as low-grade metamorphic and sedimentary rocks. Based on trace element (including rare earth elements REE) compositions of whole rocks and zircon, Hormuz rhyolites are inferred to have formed from subduction-related magmas generated in an active continental margin setting. Ion microprobe analyses of zircon crystals yielded concordant U–Pb ages with weighted mean ^(206)Pb/^(238)U age of 558 ± 7 Ma (juvenile zircons in contrast to those from previous magmatic episodes or xenocrysts) along with younger and older discordant ages which likely represent Pb loss and the presence of xenocrystic domains, respectively. Trace element ratios and in particular REE patterns of juvenile zircon from Hormuz rhyolites indicate crystallization from continental crustal source rocks typical for subduction environments. The concordant ^(206)Pb/^(238)U zircon age agrees with ages obtained from most other structural zones of Iran which indicate regional consolidation of igneous basement during the Neoproterozoic to Early Cambrian. Furthermore, Hormuz rhyolite ages and compositions correlate with counterparts that co-evolved along the northern margin of Gondwana, and are now preserved along the southern coast of the Persian Gulf. Hormuz rhyolites erupted synchronously with the deposition of carbonates and evaporites, suggesting that volcanism occupied an extensional backarc or retroarc setting. Such depositional environments predominated in the northern Gondwana continental margin where convergent (Proto-Tethyan) and extensional (Najd) tectonic regimes coexisted