Original Research Paper Architecture
1. A Study on the Seismic Behavior of the Concrete Panel Buildings

B. Hassani; A. Jafari

Volume 3, Issue 1 , Winter 2009, Pages 1-10

http://dx.doi.org/10.22061/tej.2008.1310

Abstract
  Panel construction has played an important role in building construction in recent decades. These buildings are different from the conventional frame structures because of lack of usual beam and column elements. It seems that structural engineers have reservations in using these construction systems, ...  Read More

Original Research Paper Architecture
2. Application of Polyaluminum Chloride (PACl) in turbidity removal of Tehran drinking water- Case study: Jalalieh water treatment plant

S.M.R. Alavi Moghadam; A. Bani Hashemi; R. Maknoon; M. Nik Azar

Volume 3, Issue 1 , Winter 2009, Pages 11-15

http://dx.doi.org/10.22061/tej.2008.1311

Abstract
  The main aims of this study were to compare the effectiveness of Polyaluminum Chloride (PACl) and Ferric Chloride, to optimization the coagulation/flocculation process, to investigate the effect of adding bentonite (as a coagulant aid) and to compare the residual Aluminum after adding PACl and Alum. ...  Read More

Original Research Paper English teaching
3. Globalization and EFL Curriculum Reform in Iran: Challenges and Opportunities

M. Rahimi; Z. Nabilou

Volume 3, Issue 1 , Winter 2009, Pages 17-26

http://dx.doi.org/10.22061/tej.2008.1312

Abstract
  This study investigated the relationship between globalization and the necessity for EFL curriculum reform in Iran. It also analyzed challenges and opportunities created for curriculum and syllabus designers in this process. The qualitative analysis of the Perspective of Islamic Republic of Iran in 1404, ...  Read More

Original Research Paper Educational Technology Psychology
4. Face Recognition by Combining Neural Network based on Mixture of Experts

R. Ebrahimpour; N. Taheri Makhsous; A. Hajiani

Volume 3, Issue 1 , Winter 2009, Pages 27-38

http://dx.doi.org/10.22061/tej.2008.1313

Abstract
  This paper proposed a new method for face recognition with principal component analysis in the feature extraction phase, and devised a modified version of Mixture of Experts in which each expert is an MLP, instead of linear networks in order to improve the performance of the expert networks, and consequently ...  Read More

Original Research Paper TVET
5. Direct Numerical Simulation of 2D Incompressible Boundary Layer Using Compact Finite Difference

M.J. Maghrebi; A. Zarghami; M. Feyzabadi Farahani

Volume 3, Issue 1 , Winter 2009, Pages 39-48

http://dx.doi.org/10.22061/tej.2008.1314

Abstract
  The non-dimensional Navier stokes equations in rotational form for the boundary layer flow are solved using direct numerical simulation. The length scale and velocity scale of the base flow the boundary layer thickness and the inviscid velocity outside the layer are used as the length and velocity scales ...  Read More

Original Research Paper Architecture
6. Use of Reactive sintering in production of Titanium aluminide-alumina Composite

J. Fahim; A. Kamali

Volume 3, Issue 1 , Winter 2009, Pages 49-52

http://dx.doi.org/10.22061/tej.2008.1315

Abstract
  Reactive sintering is a kind of combustion synthesis processes for synthesize of new materials. In this research, the mentioned process was used for production of titanium aluminide/alumina composite from starting materials of titanium dioxide and aluminum. According to the obtained results, composite ...  Read More

Original Research Paper TVET
7. Evaluation and Determination of Silicon Eutectic Modification Level Using Thermal Analysis in 319 Aluminum Alloy

S. Ghodrat; S. Shabestari; M. Malekan

Volume 3, Issue 1 , Winter 2009, Pages 53-61

http://dx.doi.org/10.22061/tej.2008.1316

Abstract
  Eutectic Silicon phases form as the coarse and acicular shape in Aluminum-Silicon alloys. These phases have detrimental effect on mechanical properties of casting parts. Modification process has been used to change the shape of these phases to fibrous morphology. In this research different level of strontium; ...  Read More