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Smart materials and shells affect on represent the space and identity of a society with their special activity and like any technology and element, it has its own effects and consequences and it can be said that based on the visual attractions and philosophy of the age of communication and visualization the culture of societies founded. The aim of this research is explaination of these effects on urban smart surfaces from psychological and intellectual and cultural anomalies aspects and helping designers to use it logically and in accordance with the culture and smart buildings of the community. The present research has a positive-content aspect and from another aspect, has a normative-content structure. Also, the research method includes descriptive and analytical research along with qualitative strategy, because it addresses contemporary social and cultural conditions. Data collection is based on library studies and documentation. The physical and material effects of smart shells that make urban facades based on perceptual visual cultures in perceptual aspects are criticized: truth and reality, time and space, experience and event, equality and justice, knowledge and information in a society and consider equal the meaning of firmness with persistence, generosity with lavishness, tolerance with indifference, adherence to affection and beauty with pretense and and in sensual aspects: Unity, distance and distance from the world, distorting other senses, undermining the message and meaning of the sender of the message, separation, isolation, apparent attachment, limiting taste, inhumanity of architecture and urbanization would be the results of increasing use of them.

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Abstract:
Social circles, particularly tea-houses of Esfahan in Saffavi age have had an important impact on Esfahan school poets' relations and activities. In biographies (Tazkare) and sometimes European logbooks we notice the presence of Safavi sociable king, first Shāhabbās, and other social groups in Tea-houses. Planning of Gazal, criticism and correction in poetry of poets who were frequently tradesmen and in poetry creation they were required to have more practices in tea-houses, stimulated their rhythmical poetic gift. Also; Tea-houses have had a great effect on the prevalence of stating reality and the link of calligraphy of the period. sometimes consuming narcotics in these places has aggravated their imagination power to such an extent that it can be accounted as one of the reasons in the poets' visionary in this period which was less studies. So that it can be found at the lexical and thematic level of several poets such as Şā,ib having a particular style. High frequence of Tea-house terms and different kinds of narcotic names in the period poetry is an evidence of this reality. In this article Descriptive analytical method we discuss some practices developing rhythemic nature of novice poets.

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. Dream is one of the most important elements of modern novel. In Derakht-e anjir-e ma’ābed, the only modern novel by Ahmad Mahmoud, this element plays a key role. At the beginning of the novel, Alamdar-e Avval, mentions his dreams and the Alamdar of the next generation narrates those dreams and finally the Alamdar of the third generation writes down those narrations. Alamdar’s dreams are obscure and complicated and challenge the reader. Besides, later in the book two dreams by Mard-e Digar and Sarmast-e Bakhtiari are narrated. The major dreams form the first chapter of the novel have not been studied analytically yet. This research offers an analysis of these dreams by summarizing the dream in the author’s own language and with the help of Freud’s method in the Interpretation of Dreams based on genetic structuralism according to which different parts of the novel find their meaning only in a general structure.

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The poems of fortuity are a collection of works written in the Safavid-Qajar period based on the algebraic thinking in the form of a story. Most of these poems are in the form of manuscript and they are more than 20. In this article, four prints and 11 manuscripts of these poems have been studied considering the elements of popular culture and literature. Although the poems of fortuity are written in the form of formal literature with a focus on the theological and philosophical themes, their linguistic and content characteristics prove that the main source of inspiration for these texts is the folk cultures and literature. The superficial approach to the fortuity that challenges the subject, being free  of the  complex philosophical reasoning and  the promotion of fatalism thinking in these poems,  the manifestation of popular culture and literature such as simple language and expression, the slang tone of these works, realization of superstition such as the belief in fortune, describing some popular traditions, reflecting some popular behavior, and describing personalities and places in the  popular life are some indications of fortuity poem  being  influenced by folk  literature. In terms of story structure, fortuity is also perfectly consistent with the structure of folk tales. Weaknesses in plot and verisimilitude, centrality of the events, static and dynamic characters, vague time and place and the omniscient narrative are some features that link these poems to the folk literature

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Present study describes the approach of applying Response Surface Methodology (RSM) with a Pareto-based multi-objective genetic algorithm to assist engineers in optimization of sheet metal forming. In many studies, Finite element analysis and optimization technique have been integrated to solve the optimal process parameters of sheet metal forming by transforming multi objective problem into a single-objective problem. This paper aims to minimize the objective functions of fracture and wrinkle simultaneously. Design variables are blank-holding force and draw-bead geometry (length and Diameter). Response surface model has been used for design of experiment and finding relationships between variables and objective functions. Forming Limit Curve (FLC) has been used to define the objective functions. Finite element analysis applied for simulating the forming process. Proposed approach has been investigated on a cross-shaped cup drawing case and it has been observed that it is more effective and accurate than traditional finite element analysis methods and the ‘trial and error’ procedure.

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In this paper, the effect of gas and liquid inlet superficial velocities and distance from upstream on slug frequency is studied experimentally. Empirical correlations are also presented based on the obtained results. The tests are conducted for liquid holdup αl= 0.75 and three distances from inlet in a long horizontal channel made of Plexiglas with dimensions of 510 cm2 and 36m length in Multiphase Flow Lab. of Tarbiat Modares University. The superficial liquid and air velocities rated as to 0.11-0.56 m/s and 1.88-13 m/s, respectively. The obtained results show that slug frequency is dependent to superficial liquid velocity directly. Slug frequency decreases with slip ratio increase. Slug frequency has strong dependency on superficial liquid velocity and increases monotonically with it. However, superficial gas velocity has damping effect on slug frequency. As slug moves towards downstream, slug frequency will be decreased but slug velocity will be increased.

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In this article, two-phase slug flow is simulated numerically in a horizontal duct with rectangular cross-section using Volume Of Fluid (VOF) method. Conservation equations of mass, momentum and advection equation are solved in open source OpenFOAM code accompanying k-ω SST turbulence equations. Simulation is conducted based on the experimental results in the duct with rectangular cross-section. The results shows, due to Kelvin-Helmholtz (K-H) instability criteria slug initiation forms in the air-water interface during three dimensional turbulence modeling. Water level was increased slightly at interface in both numerical simulation and experiment. This level increase satisfies the K-H instability to generate a slug at interface. During slug initiation, the pressure behind slug is increased significantly. Big pressure gradient at the beginning of the slug in compare to the end of it causes the slug length to be increased as propagate along the duct. The numerical simulation of present research is capable of predicting the slug length accurately in accordance with experiment; however, the slug position with 22% inaccuracy was obtained. Comparison of the results with the numerical and experimental results of other researchers confirms higher accuracy of flow prediction in the present work.

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In the present article, velocity and deformation of an air bubble have been considered in quiescent liquid at different consecutive slopes from 5 to 90 degrees in respect to horizontal condition. To establish these purposes, air-water two-phase flow has been simulated numerically by using volume of fluid method. The two-phase flow interface has been traced by using Piecewise Linear Interface Calculation (PLIC) method. Surface tension force was estimated by Continuum Surface Force (CSF) model. The simulation results show that maximum bubble velocity occurred at 45 degrees which is in agreement with the previous researchers result. Simulation of bubble movement was also continued to two consecutive slopes at different angles. At slope deviation location, a vortex was generated due to liquid movement governed by gravity forces. This vortex changes the bubble velocity as well as bubble shape. This vortex also reduces the bubble velocity and changes the bubble nose shape from sharp to flatten at deviation from low to high slope values. However, at deviations from high to low slope values, the bubble nose becomes more sharpened in addition to bubble velocity increase. The maximum average velocity of bubble movement at two consecutive slopes was obtained during the condition that the first and second slopes were set to 60 and 30 degrees, respectively.

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In this paper, dry electro-discharge machining (Dry EDM), one of the newest machining processes which differs mainly from conventional EDM in using gaseous dielectric along with tool electrode rotation, has been studied. Gap voltage, discharge current, pulse-on-time, pulse-off time, dielectric gas pressure, and electrode rotational speed have been considered as effective input parameters. Response surface methodology (RSM) has been used to optimize the machining performance with respect to material removal rate (MRR). Base on the results and analysis of running experiments, it can be concluded that MRR increases by increasing gap voltage, discharge current, the ratio of pulse-on time over pulse-off time, input gas pressure, and electrode rotational speed. There also exists an optimum amount of pulse-on time determined according to the machining circumstances. Also the material removal rate in dry EDM has been improved compared with that in conventional EDM in identical conditions. Keywords: Dry electro-discharge machining (Dry EDM), Gaseous dielectric, Response surface methodology (RSM) Keywords: Dry electro-discharge machining (Dry EDM), Gaseous dielectric, Response surface methodology (RSM) Keywords: Dry electro-discharge machining (Dry EDM), Gaseous dielectric, Response surface methodology (RSM)

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Experimental investigation conducted on Taylor bubble characteristics in a large bend including three consecutive inclinations. For this purposes, flow maps were obtained for the bend and horizontal section of upstream of the bend to define the area of this regime and mechanism of Taylor bubble formation. The effect of superficial gas-liquid velocities and the duct slope were studied on average velocity, length and frequency of bubbles. The results show, the bubble velocity and length increase as gas superficial velocity increases and the duct slope decreases. However, liquid velocity increase has decreasing effect on this characteristics. Bubble frequency is independent of slope change and reduces as gas superficial velocity increase. However, bubble frequency reduces at first and then increase as liquid superficial velocity increases. Regarding the safety regulation for industry, the minimum of the bubble frequency should be generated for the required liquid mass flow rate. Meanwhile, for the gas velocity, some optimization is required between frequency reductions with Taylor bubble velocity increase in addition to bubble length reduction. Regarding the background of the present field with shortage of results on Taylor bubbles frequency, some correlations based on the superficial Reynolds number of phases were presented for each inclination.

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To investigate, understanding and predicting dynamic fracture behavior of a cracked body, dynamic stress intensity factors (DSIFs) are important parameters. In the present work interaction integral method is presented to compute static and dynamic stress intensity factors for three-dimensional cracks contained in the functionally graded materials (FGMs), and is implemented in conjunction with the finite element method (FEM). By a suitable definition of the auxiliary fields, the interaction integral method which is not related to derivatives of material properties can be obtained. For the sake of comparison, center, edge and elliptical cracks in homogeneous and functionally graded materials under static and dynamic loading are considered. Then material gradation is introduced in an exponential form in the two directions in and normal to the crack plane. Then the influence of the graded modulus of elasticity on static and dynamic stress intensity factors is investigated. It has been shown that, material gradation has considerable reduce influence on DSIFs of functionally graded material in comparison with homogenous material. While, static stress intensity factors can decrease or increase, depend on the direction of gradation material property.

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Size dependent behavior of materials appears for a structure when the characteristic size such as thickness or diameter is close to its internal length-scale parameter. In these cases, ignoring this behavior in modeling may leads to incorrect results. In this paper, strong effects of the size dependence on the static and dynamic behavior of the electrostatically actuated micro-beams have been studied. The equilibrium positions or fixed points of the gold and nickel micro-beams have been determined and shown that for a given DC voltage, there is a considerable difference between the fixed points gained using the classic beam theory and the modified couple stress theory. In addition, it has been shown that the static and dynamic pull-in voltages gained using the couple stress theory are several times higher than those gained using the classic beam theory. Some previous studies have applied the classic beam theory in their models and introduced a considerable hypothetical value of residual stress to match their experimental and incorrect theoretical results. It has been shown that using the modified couple stress theory decreases considerably the difference with the experimental results.

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In this study, a three-dimensional micromechanics-based analytical model is developed to study the effects of regular and random distribution of silica nanoparticles on the thermo-elastic and viscoelastic properties of polymer nanocomposites. The Representative Volume Element (RVE) of nanocomposites consists of three phases including silica nanoparticles, polyimide matrix and interphase. Since the polymer in the vicinity of the nanoparticles shows distinct properties from those of the bulk matrix, because of nanoparticle–polymer matrix interactions, this region as interphase is considered in micromechanical modeling with specific thickness and properties. In order to simulate random distribution of silica nanoparticles into polyimide matrix, the RVE is extended to c×r×h cubic nano-cells in three dimensions. Perfect bonding conditions are applied between the constituents of RVE. It is assumed that all three phases of the RVE to be homogeneous and isotropic to obtain the thermo-elastic response of nanocomposite. The extracted thermo-elastic properties by the micromechanical model with random distribution of silica nanoparticles are closer to the experimental data. To predict the effective viscoelastic properties of the nanocomposites, silica nanoparticles are modeled as a linear elastic material, while polyimide matrix and interphase are assumed to be as a linear viscoelastic material. The model is also used to examine the influence of varying interphase properties and silica nanoparticle size on the effective nanocomposite behavior. The overall creep behavior of the nanocomposite for several stress levels is also presented.

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Nonlinear behavior of members and their connections during earthquake caused ductility in buildings. Also increasing the number of resisting elements of structure reduces cost of repair and reconstruction in bending structures. In contrast, the concentrically brace frames do not have sufficient ductility But their vulnerable members are limited, thus their reconstruction were much less expensive than bending frames. In order to overcome concentrically brace frames disadvantages and they providing good ductility for them, Extensive research has been conducted in the past two decades by researchers. Several methods have been proposed by various researchers which were resulted in increasing the ductility of concentrically brace frames. In this research, a new type of energy dissipation elements was introduced. This dissipation consists of a ring which increased the ductility and earthquakeenergy absorption and can be used in braced frames. Also, during an earthquake, it has depreciates significant portion of input energy by entrance to non-linear phase and forming flexural plastic hinges, so it prevent entrance of other members to non-linear phase and buckling of brace members. In order to increase the capacity of this member, a box was used that connected to the ductile ring by two plates. By increasing the diameter, rate of ductility decreased. However increasing the thickness would enhance the ductility. Stresses and deformations were been studied by using the finite element under cyclic loads. Obtained hysteresis curves indicate that the introduced element can be act as an energy absorbing member and also act as a fuse to control the buckling of brace, while providing to the required ductility. Pushover analyses for determining the seismic demand of structures and especially in earthquake engineering based on performance, it has been considered by many researchers. General basis of this method is a nonlinear mathematical model of the structure was under a lateral load pattern and this lateral load increases at a constant rate until the structure reaches a predetermined target displacement. This target displacement was measured at a control point. During the ascending increase in lateral load, resistance and stiffness of structural components were corrected at each step according to predefined nonlinear. Also performance of this ductile element was investigated in 2D concentrically brace frames under Pushover analyses. Obtained results from pushover analysis indicated that ductile element can decrease base shear force and also increase ductility of structure. The obtained results indicate that installation or replacement of steel ring in proposed connection was easily possible with low cost and high speed. Furthermore, nonlinear static analysis obtained results reflects the lower base shear force for braced frame with proposed element compared to braced frames without proposed element Which results in Cutting down construction and foundation strengthening costs of building. At the end, results of Pushover analysis of concentrically braced systems can be mentioned. High behavior coefficient of structural braced systems with proposed element represents suitable performance and ductility of proposed element in building.

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In present study, volume of fluid method in OpenFOAM open source CFD package will be extended to consider phase change phenomena due to condensation process. Both phases (liquid – vapor) are incompressible and immiscible. Vapor phase is assumed in saturated temperature. Interface between two phases are tracked with color function volume of fluid (CF-VOF) method. ُSurface Tension is taken accounted by Continuous Surface Force (CSF) model and mass transfer occurs along interface is considered by Lee mass transfer model. Pressure-Velocity coupling will be solved with PISO algorithm in the collocated grid. This solver is validated with Stefan problem. In one dimensional Stefan problem, the desistance of interface motion from cold wall is compared by the analytical solution. Then condensate laminar liquid film flow over vertical plate is simulated in the presence of gravity. Numerical result shows calculated film thickness from numerical simulation is thinner than analytical solution. Also, it shows Nusselt number is a function of vapor specific heat which neglected in existing correlations, therefore analytical solution and experimental correlation should modified to consider this effect on the Nusselt Number.

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One of obstacles in simulation of two phase flow is parasite currents. These currents cause unphysical distortion at interface which impairs interface capturing and numerical results. In present study, two methods (using Filter and s-CLSVOF) are implemented in OpenFOAM two phase flow solver called interFoam to reduce parasite current. 3 filters are added to color function volume of fluid (CF-VOF) method. These filters reduce parasite current in different ways, one smoothes color function, one smoothes curvature and the other one compresses the interface. The original and the modified solvers are tested with a quiescent bubble bench mark to investigate the effect of each filter on parasite currents. Then optimum arrangement of filters is compared with s-CLSVOF method and interFoam. Present study shows parasite current magnitude can be reduced at least up to 50% in the modified solvers. Also, the comparison of pressure jump from numerical results and analytical result with Young-Laplace equation shows modified solvers can predict pressure jump better than original solver. The pressure jump error is reduced up to 400% in the modified solvers. Also present study shows filters have better performance than s-CLVOF method and it can be considered as a suitable substitution of coupled methods.

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Optimization has found a widespread application in many branches of science. In recent years, different methods and theories have been developed to find optimal solutions. Optimization algorithms inspired by nature as heuristics solutions to complex problems. Reverse engineering is one of the applications of optimization methods. In reverse engineering a set of scan points are defined relative to a particular coordination. In data registration process the scanned data sets separated and combined to a single coordinate system are called the process of registration. In this research, applications part has been digitized by coordinate measuring machine(CMM) and the process of point clouds registration in experimental on two pieces in position (without translation and with translation case) has been implemented. Using gravitational search algorithm (GSA), particle swarm optimization (PSO) and genetic algorithm (GA) optimization process is optimized and the registration parameters (rotation and displacement) are obtained. The algorithms mentioned, GSA the accuracy displacement, rotational accuracy and better convergence rate and the run time is less. Finally, a hybrid algorithm is proposed which is a combination of GSA, and Nelder-Mead algorithms (GSA-NM). In the proposed algorithm, the initial guess values obtained by GSA and Nelder-Mead algorithm is provided to ensure an accurate response. The proposed hybrid algorithm is superior to GSA and Nelder-Mead, in terms of the number of iterations and the amount of convergence.

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The dominant excitation forces are generally measurable during the forced vibration tests of structures unlike the ambient vibration tests. Not considering of input forces in the system identification is one of the main sources for error generation in the Operational Modal Analysis (OMA). Therefore, some non-structural dynamic characteristics obtained due to the excitations effects can be eliminated by considering the input forces. In this paper, a special modal analysis is presented in the subspace method that removes the excitation effect of the measured input forces from the test data using orthogonal decomposition and identifies the system with an optimal subspace method based on canonical correlation analysis (SSI-CCA). To evaluate the proposed method, the seismic response of the Pacoima dam and forced vibration test results of the Alamosa Canyon Bridge are used. Non-structural and noisy pole removal, and increased accuracy of the extracted modal properties, specially damping ratios, can be mentioned as one of the important results of this study. Four non-structural modes are identified using the SSI-Data method while the first two modes without any noises, the same as previous results, are extracted using the proposed method. In addition, the damping ratios of the Alamosa Bridge are obtained by Hammer test, which are not obtained in the previous investigations.

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In present study, impact of single bubble on an inclined wall and its movement are investigated by applying volume of fluid method (VOF) in OpenFOAM open source cfd package using a solver called interFoam. Both phases are incompressible and surface tension between two phases is estimated by CSF method. The effect of some parameters such as contact angle, wall slope and Bond and Morton dimensionless numbers on bubble shapes and velocity are studied. The numerical results show bubble velocity along wall increases with the increase of wall slope angle. The maximum bubble velocity happens at 50 degree. Three bubble regimes are recognized and introduced in this study named as: sliding, bouncing, and zigzagging based on wall slope. The bubble regime changes from sliding to bouncing when wall slope changes from 30 to 40 degrees. In constant Morton number, increment of Bond number increases both velocity and amplitude of fluctuations. In addition, an increment of Morton number in constant Bond number, decreases velocity and amplitude of fluctuations. Moreover, by increment of Morton number, the bubble motion will change from an accelerating motion to a constant velocity condition.

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In this research two-phase slug flow regime in a T-junction branching divider is examined in two regular and irregular groups. Simulation is accomplished by OpenFOAM™ open source software. Simulation uses single fluid with volume of fluid (VOF) method to follow gas-liquid two-phase flow interface. Constant velocity boundary condition for inlet, constant pressure for outlet boundaries and no slip boundary condition are considered for fixed walls. Since slug flow regimes are one of the most complex two-phase flow regimes which its behavior could result in serious damages to the downward equipment's; the present research concentrates on the examination of slug flow behavior in the downstream of the T-junction. This study has concluded that using T junction eliminates flow fluctuation so the pressure and air velocity values decrease. Although the inlet of the vertical branch with cross section of 5×5 cm2 is not fully effective in decreasing upward slugs, but with increasing size of the inlet vertical side-branch from 5×5 cm2 to 10×5 cm2 and 20×5 cm2, pressure value of two-phase flow in the whole duct decreases. The consequences are the slug flow decreases in downstream but the plug flow grows up which means the objectives of the research has been accomplished. To verify the numerical results, comparison was made with the well justified previous works. The agreement was encouraging.