Volume 6, Issue 2 (2013) | American Journal of Engineering and Applied Sciences

A Novel µ-Negative Metamaterial With Enhanced Rejection Bandwidth

Haider Raad — 2013-04-03

American Journal of Engineering and Applied Sciences, Published online: 3 April 2013; doi:10.3844/ajeassp.2013.137.144

In this study, a novel planar µ-Negative (MNG) metamaterial structure based on Split Ring Resonators (SRRs) with improved rejection bandwidth is presented. A bridging technique is used to connect two...

Stochastic Prognostic Paradigm for Petrochemical Pipelines Subject to Fatigue

Abdo Abou Jaoude — 2013-04-15

American Journal of Engineering and Applied Sciences, Published online: 15 April 2013; doi:10.3844/ajeassp.2013.145.160

The most important aim for industrialists is the prevention and the evaluation of their products state since non-predicted failure is very expensive in some cases. This can be done mainly by the evalu...

Mathematical Model of Heat Transfer for Tuyere Under Non-Transparent Medium Environment

Shen Yuan-Sheng — 2013-04-23

American Journal of Engineering and Applied Sciences, Published online: 23 April 2013; doi:10.3844/ajeassp.2013.161.171

To develop the mathematical model of the heat transfer relations between the tuyere and other high temperature radiation objects in BF under the non-transparent medium condition, based on the qualitat...

Hardware in the Loop Simulator for Multi Agent Unmanned Aerial Vehicles Environment

Kamal S. Ali — 2013-05-10

American Journal of Engineering and Applied Sciences, Published online: 10 May 2013; doi:10.3844/ajeassp.2013.172.177

This study describes a Multi-Agent Hardware In the Loop Simulator (HILS) for Unmanned Aerial Vehicles’ (UAV) autopilots. This HILS system allows multiple autopilots to fly multiple virtual airframes...

Design and Parametric Optimization of an Organic Rankine Cycle Powered by Solar Energy

Francesco Calise — 2013-05-15

American Journal of Engineering and Applied Sciences, Published online: 15 May 2013; doi:10.3844/ajeassp.2013.178.204

This study presents the simulation and performance analysis of a regenerative and superheated Organic Rankine Cycle (ORC). To this scope, anew simulation model has been developed. The model is based o...

Analysis of Iranian Traditional Architecture Through the Lens of Kenneth Frampton’s "Critical Regionalism"

Tohid Fardpour — 2013-05-27

American Journal of Engineering and Applied Sciences, Published online: 27 May 2013; doi:10.3844/ajeassp.2013.205.210

The fundamental strategy of Critical Regionalism is to mediate the impact of universal civilization with elements derived indirectly from the peculiarities of a particular place. This study presents s...

Cassava Chip Drying by Using a Small-Scale Hot-Air Microwave Oven

Patomsok Wilaipon — 2013-06-06

American Journal of Engineering and Applied Sciences, Published online: 6 June 2013; doi:10.3844/ajeassp.2013.211.215

Characteristics of cassava microwave hot-air drying were investigated in a 2-planes microwave hot-air dryer. The drying experiments were carried out at two levels of sample surface temperature set-poi...

Comprehensive Investigation into the Exergy Values of Six Rice Husks

Yaning Zhang — 2013-06-10

American Journal of Engineering and Applied Sciences, Published online: 10 June 2013; doi:10.3844/ajeassp.2013.216.225

Exergy is a measurement of how far a certain system or material deviates from a state of equilibrium with the environment and it is a useful tool for improving the efficiency of energy-resource use. B...

Efficient Design of a Photovoltaic Water Pumping and Treatment System

Abderrahmen Ben Chaabene — 2013-07-04

American Journal of Engineering and Applied Sciences, Published online: 4 July 2013; doi:10.3844/ajeassp.2013.226.232

Through the world, the exploitation of solar energies knew a strong growth these last years. It is interesting to exploit them on the place of consumption, by directly transforming into heat, or in el...

A Novel Method of Voltage Sag and Swell Estimation for Power System Applications

A. Vetrivel — 2013-07-04

American Journal of Engineering and Applied Sciences, Published online: 4 July 2013; doi:10.3844/ajeassp.2013.233.240

This study presents four simple mathematical models to build the voltage shape with the knowledge of few parameters and detects voltage sag and swells accurately. Fourier series, cubic polynomial, Rat...