فهرست مطالب حسن ساقی

The novel consists of imaginative and hypothetically reconstructed journals of Hz. Ruqayyah, an under-aged and martyred daughter of Imam al-Husayn. The book is a work of the Lebanese novelist Rajaa Muhammad Bitar. It vividly portrays various aspects of Imam al-Husayn's character and moral traits as depicted by his daughter throughout the time-span from leaving Medina thourough the Ashura Battle of Karbala.

In large-scaled civil projects such as urban gas-supply projects, one of the most important concerns is selection of appropriate contractor for performing projects. In order to evaluate contractors' performance and select a more qualified contractor, the appropriate criteria for assessing contractors should be identified (De Araújo et al., 2018). Accordingly, a reliable methodology should be used for assigning weights to criteria, as well as a comprehensive method should be analyzed for ranking contractors (Hasnain et al., 2018a).In this research, the Best-Worst Method (BWM) is utilized for assigning weights to contractors’ evaluation criteria based on using a linear optimization model, which improves the previous weighting methods (Rezaei, 2016). In addition, the Fuzzy VIseKriterijumska Optimizacija I Kompromisno Resenje (FVIKOR) method is analyzed in order to score for contractors based on proximity to ideal solution and bilateral agreement through concessions, which uses simple and short calculations for evaluating contractors with respect to criteria, and causes high degree of consistency in final ranking results (Gupta, 2018).Therefore, in this study, a novel approach based on combination of the BWM and the FVIKOR methods is developed, in which a systematic and applicable algorithm is used for choosing the final evaluation criteria, the selected criteria are weighted, and the contractors of gas-supply civil projects are ranked. In application, regarding that the gas company of Southern Khorasan province is faced challenges and concerns in process of selecting qualified contractors for gas-supply civil projects, the choose of the more qualified contractor in one of the most important urban gas-supply projects of this company is investigated.

In this study, the effect of agricultural water productivity for optimization of the cultivation pattern in the irrigation network of Doosti Dam has been investigated. For this purpose, the amount of costs and revenues from the sale of agricultural products and the water demand of these products were used as the main parameters. In this regard, the study area (Doosti Dam Irrigation Network) was divided into six areas in terms of catchments, social context, scope of activities of aquifers and productivity index according to field surveys for all Areas were identified. The results show that with the implementation of the proposed plan, income in the whole area will increase by 20% and the irrigation system of the region will be optimized. Also, the annual water demand and unmet water demand of each area of the study area were calculated according to the available water resources and also based on the use of WEAP model functions. As a result, irrigation efficiency increased and water demand of agricultural products decreased until the project horizon (2030). The results of this study in the study area, can provide a good management approach to make future decisions for policy makers and stakeholders in the field of water in this area.

At the end of the verses of Surah Al Imran, the subject is demarcated because it has a focal state and carries the general thought of the verse. The subject is also the center around which the verse moves and is considered as the core for the content of the verse, so that the end is a reference point of thoughts that rely on one or more topics. The power of the ending verse can be related to mentioning certain artistic elements and its maximum order, so that the elements in the ending verse show the subject of the verse in a different structure from its context and the quality of the structure of the end of each verse is different. Each verse uses a structure that is appropriate to its content. So, it is worth thinking about the ending verses of the Holy Quran in order to make it clear to us that the artistic order in the Holy Quran is semantic according to the requirements. Therefore, it is necessary to point out that any change in the scope of the ending verses and its words and combinations is effective in creating marginal meanings that require the attention and intelligence of the listener. The purpose of this study was to investigate the artistic structure of the end of the verses with a descriptive-analytical method. The results showed the artistic beauty of the verses to exaggerate or express stability and permanence, etc., to the extent that the words and meanings of the verses are intertwined to form phrases related to their text within the framework of a particular artistic system. The results also showed that each ending of the verses has a special structural system that is consistent with the literary purpose of the same verse.

In this paper, genetic algorithm has been used for liquid sloshing modeling in the rectangular storage tanks. For this purpose, a numerical model was developed to model the sloshing phenomenon in the rectangular storage tank with different widths and water depths exposed to the horizontal periodic sway motion with different amplitudes and angular frequencies. In the numerical model, coupled finite element and boundary element methods were used to solve the governing equations. The governing equations are the Laplace equation and the dynamic free surface boundary condition. In order to validate the model, a rectangular tank with 0.9 m width and 0.6 m water depth was exposed to a horizontal periodic sway motion with 0.002m amplitude and 5.5 rad/sec angular

There is no doubt that quranic description and expression includes forms and artistic secrets that shows Quran is literary and purposeful speech. This fact gives beauty, attraction,lastingness and eternity to quran text. likely, among the clearest features’ coherence phenomenon and semantic showing are complete and extensive. This subject along the rationality of grammer and Structural system of words and richness of lexicon and its exactness in expressing the ultimate meaning is exposed.This study by using of descriptive-analytical method along the focus on Tajvid science data aims at survey the implied meaning of vowels’coherence in Al-Imran chapter (sura).This study cleared the mentioned chapter has purposeful coherence in its verses’ intonation. Therefore, repetition is one of the most important elements in increasing the artistic coherence and peripheral meanings. Mean while, these meaning come from the vowels’ coherence that emphasize to their features and their combination to each other. Then, artistic coherence can be found as the clearest form among the different forms like eloquence.

In this study, bond strength between steel rebar and concrete containing micro-silica, nano-silica and fibers are investigated. To this aimed, 36 cylindrical (10 cm*15 cm) specimens have been constructed using 12 different mix designs. ANN model was used in order to predict the experimental results. The applied model consists of six input parameters as micro-silica, nano-silica, fibers, aggregate/cement ratios, water/cement ratio and cement strength grades (325, 425 and 525 kg/cm2). The bond strength between steel rebar and concrete was also used as output parameter. This model is trained by experimental data for validation of experimental results predicted by the researchers of the data network is used for data processing. The predicted results were also validated by data from previous researches. The results indicate that the artificial neural network is a powerful tool for predicting the effects of various concrete admixtures on bond strength between steel rebar and concrete. Moreover, various effective design parameters should be considered in the predicting model which may potentially yield more precise results.

In this article, cavity fluid flow is stimulated in Two-dimension. In order to model the effects of turbulence, large eddy simulation model has been used to include sub-network effects of small eddies, sub-grid Smagorinsky model was used. In this method, Smagorinsky coefficient is a constant value which should be determined by experiment. Suggested values by other researchers are in range 0.065-0.25. In this research, staggered and collocated grids have been used in analyzing lid-driven cavity flow and results were compared for different values of Smagorinsky coefficient. Furthermore, the velocity distribution was evaluated in different parts of the cavity. Comparison of numerical results shows that models presented in this research can stimulate this kind of issues with high accuracy with assigning the Smagorinsky coefficient in range of 0.5-0.7. Also, using the staggered grid in comparison with collocated grid leads to more accurate results. With increase the Reynolds number, horizontal and vertical velocity gradient in wall area increases and decreases in middle area of cavity. Also, staggered and collocated grids in low Reynolds numbers present almost similar results in predicting horizontal and vertical velocity in center of the cavity. But with the increase in Reynolds number, the gained results replaced by the staggered grid are more exact and the gradient of horizontal and vertical velocity in the collocated grid, are less moved by the staggered grid than it was supposed to do.

The water supply networks have always been of significance to researchers as a hydraulic system of transferring and distributing water. The pressure gradient is the main reason of water transfer in networks, and in case of non-standard pressure increase, the undesirable phenomenon of leakage occurs in the network. Leakage in urban water distribution networks causes water waste and enormous financial losses. Therefore, there exists the need to manage and minimize the amount of leakage. In this study, a water distribution network is modeled using the potentialities of hydraulic analysis model, the EPANET 2.0, and, by presenting a new model, the leakage location is recognized. In order to do this, we, firstly, entered all the network parameters into the software. Then, the network was analyzed supposing the non-occurrence of leakage, and the amounts of nodal pressures were measured. Moreover, the nodal pressures were estimated by creating a hypothetical leakage in one of the network node and analyzing the network. Finally, the position of laekage was determined by defining the leakage index and comparing it in various nodes. The results show that the suggested method is efficiently capable of predicting the laeakage position in the network so it could safely replace other methods, especially destructive methods used in recognizing the leakage position in the network.

In this study, a two-dimensional width averaged model "CE-QUAL-W2" has been used to simulate the water level, temperature and quality of Shirin Darreh Dam during a period of eleven months in years 2012-2013. In this way, the model was calibrated and validated. Then, the reservoir water quality was evaluated for different reduction of the amount of input phosphorus. Finally, the effect of increment of the sub layer oxygen concentration on water reservoir quality improvement was studied. Sampling and simulation results showed a sharp decline in the amount of dissolved oxygen in hypolimnion and an increase in the concentration of phosphorus in this region and so the eutrophic condition of the lake at the end of the simulation. The results also showed that increasing of the sub layer oxygen concentration reduced the amount of phosphorus release and improvement of water quality. For example, the reservoir conditions are changed from eutrophic to mesotrophic, when the amount of phosphorus entering the reservoir reduced 60-70 percent. Furthermore, the phosphorus concentration reached to 50 mg/lit in normal condition which it would be reduced to 25 mg/lit when Oxygenation device was applied.

The sub surface flows resulting by rainfall are one of the main sources of supplying water. In these conditions, swap of agricultural lands in different seasons is one of the main problems of farmers which are caused by an increase in the level of subsurface water or impropriety of the soil texture. In such conditions, the sodium and salty soil cause a decrease in the efficiency of crops harvest. In addition, water collected from rainfall is one of water resource in urban and non-urban areas, therefore determining the drainage coefficient for estimating drainage water of it is very important. Therefore, in this study, different methods of determining the drainage coefficient in sodium and salty soil have been investigated. The obtained results have shown that the maximum of drainage coefficient in steady method is 2.4 mm/day. However, this coefficient changes throughout the day according to the irrigation calendar method from the minimum 0.37 to the maximum 2.49 mm/day. The results have indicated that the amount of the obtained drainage coefficient by steady method is always more than the amount obtained by unsteady method. But the amount of this coefficient is the equal in the beginning of summer using both methods. Therefore, using steady method causes an increase in the estimated subsurface flow amount so it is suggested to use the unsteady method to estimate the drainage coefficient.

When the concrete loses its moisture, shrinkage and volume reduction is happen and eventually cracks create and deformations in the concrete are increased. If the reinforcement concrete member be bounde, strain caused by condensation cause cracking member and increases the deformation member with time. This phenomenon is due to the rapid evaporation of water in the concrete, occurs because of the wind and temperature rise. One of the main reasons for the decrease in strength and durability of concrete are cracks. In this study evaluated the effect of fibers by different volumes on reduce cracking that created by, shrinkage plastic on concrete slabs. Plastic shrinkage experiments in a greenhouse by using mold that was designed for this purpose. The parameters in this study are, the percentage of fiber volume to volume of concrete and concrete strength. Finally, the effect of polymer fibers on plastic shrinkage cracking of concrete was investigated and discussed.

Roads are National resources of countries and every year large costs are spent to maintain and repair of them. Destruction of Asphalt is one of the main problems in the maintenance of roads. In this regard¡ durability and reliability of asphalt is depended to its Characteristics of aggregates and construction. There are always some reasons for early destruction of asphalt. Materials resistant to traffic¡ weather conditions and the adhesion of bitumen to aggregate¡ are the main factors affecting the sustainability and durability of asphalt. Improper use of aggregates and bitumen and its poor performance lead to stripping materials¡ which cause damage to asphalt. In this study¡ two types of asphalt are made using mountain and fluvial materials and their operation was investigated under heavy traffic load. At last¡ possible solutions are suggested to resolve the potential problems.

Sloshing phenomenon is a complicated free surface flow problem. It has a wide range of engineering applications especially in tanker ships and Liquefied Natural Gas (LNG) carriers. This phenomenon from structural point of view can create critical condition for marine structures. It can cause pressure increase on the tank perimeter due to sloshing. Therefore, it is essential to be able to evaluate the fluid dynamic loads on the tank perimeter. In this paper a numerical model is developed based on incompressible and inviscid fluid for liquid sloshing phenomenon in trapezoidal tank using coupled BEM-FEM. The results are validated for rectangular container using available data. The suggested geometric shape reduces the sloshing effects more efficiently than the available rectangular tank.

In this paper، Smagorinsky subgrid scale model is developed to numerically simulate Lid- driven cavity problem in laminar and turbulent conditions. Staggered and collocated grids were used in modeling. Horizontal and vertical velocity profiles in the cavity center for different Reynolds numbers were estimated and compared with Ghia results. The achievements showed that the results are improved using staggered grids and Smagorinsky coefficient in a range of 0. 5 to 0. 7.