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Tehran, Iran

Tarbiat Modares University is an exclusively graduate university with its main campus in Tehran, Iran. It was founded in 1982 and is consistently ranked among top universities in Iran. Tarbiat Modares University is the only exclusively graduate university in Iran and was founded to train university professors. Admission to the university is through national level university exams and in most programs is limited to top performers. Wikipedia.

Husseinzadeh Kashan A.,Tarbiat Modares University
Applied Soft Computing Journal | Year: 2014

League Championship Algorithm (LCA) is a recently proposed stochastic population based algorithm for continuous global optimization which tries to mimic a championship environment wherein artificial teams play in an artificial league for several weeks (iterations). Given the league schedule in each week, a number of individuals as sport teams play in pairs and their game outcome is determined in terms of win or loss (or tie), given the playing strength (fitness value) along with the intended team formation/arrangement (solution) developed by each team. Modeling an artificial match analysis, each team devises the required changes in its formation (generation of a new solution) for the next week contest and the championship goes on for a number of seasons (stopping condition). An add-on module based on modeling the end season transfer of players is also developed to possibly speed up the global convergence of the algorithm. Extensive analysis to verify the rationale of the algorithm and suitability of the updating equations together with investigating the effect of different settings for the control parameters are carried out empirically on a large number of benchmark functions. Results indicate that LCA exhibits promising performance suggesting that its further developments and practical applications would be worth investigating in the future studies. © 2013 Elsevier B.V. Source

In this paper free vibration behavior of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) cylindrical panel embedded in piezoelectric layers with simply supported boundary conditions is investigated by using three-dimensional theory of elasticity. By using Fourier series expansion along the longitudinal and latitudinal directions and state space technique across the thickness direction, state space differential equations are solved analytically. The traction-free surface conditions then give rise to the characteristic equation for natural frequencies. Accuracy and convergence of the present approach are validated by comparing the numerical results with those found in literature. In addition, the effects of volume fraction of CNT, four cases of FG-CNTRC, piezoelectric layer thickness, mid radius to thickness ration and modes number on the vibration behavior of the hybrid cylindrical panel are also examined.© 2013 Elsevier Masson SAS. All rights reserved. Source

Based on theory of elasticity, static behavior of functionally graded carbon nanotube reinforced composite (FG-CNTRC) rectangular host plate attached to thin piezoelectric layers subjected to thermal load and or electric field is studied. It is assumed that temperature gradient does not affect the thermo-elastic constants of the plate. Distribution of CNT is uniformly or functionally graded along the plate thickness. Analytical solutions for the temperature, stress and displacement fields for the FG-CNTRC plate with simply-supported edges are derived by using the Fourier series expansion along in-plane coordinates and state-space technique across thickness direction. The present procedure is validated by comparing the numerical results with the available published results. Parametric studies are performed to assess the effects of CNT volume fraction, case of CNT distribution along the thickness direction, surface boundary conditions, applied voltage, aspect ratio and length to thickness ratio on the behavior of FG-CNTRC rectangular plate. © 2014 Elsevier Ltd. Source

Kazemi Najafi S.,Tarbiat Modares University
Waste Management | Year: 2013

The use of recycled and waste thermoplastics has been recently considered for producing wood plastic composites (WPCs). They have great potential for WPCs manufacturing according to results of some limited researches. This paper presents a detailed review about some essential properties of waste and recycled plastics, important for WPCs production, and of research published on the effect of recycled plastics on the physical and mechanical properties of WPCs. © 2013 Elsevier Ltd. Source

Ghobadian B.,Tarbiat Modares University
Renewable and Sustainable Energy Reviews | Year: 2012

Iran's diversity of terrain and climate enables cultivation of a variety of energy crops suitable for liquid biofuels production. In Iran, the easily and readily available biofuel feedstock today for production of bioethanol is molasses from sugar cane and sugar beet. There is also about 17.86 million tons of crops waste from which nearly 5 billion liters of bioethanol could be produced annually. This amount of bioethanol is sufficient to carry out E10 for spark ignition engine vehicles in Iran by 2026. There is also enormous potential for cultivation of energy plants such as cellulosic materials and algae. Iran has 7%of its area covered with forest products which are suitable sources for liquid biofuels such bioethanol and biodiesel. Iran also has a long tradition of fishing in Caspian Sea and Persian Gulf with about 3200 km coastline and on inland rivers. The produced fish oil and other plant oils such as palm tree, jatropha, castor plant and algae are suitable biodiesel feedstock. Out of 1.5 million tons of edible cooking oil consumed in Iran annually, about 20% of it can be considered as waste, which is suitable biodiesel feedstock.This quantity along with the other possible potential feedstock are favorable sources to carry out B10 step by step until 2026. © 2012 Elsevier Ltd. All rights reserved. Source

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