Volume 1, Issue 4 (2008) | American Journal of Engineering and Applied Sciences

Relational GIS and Remote Sensing Database System for Al-Salt Area, Jordan

Eyad H.R. Fadda — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.241.247

Due to the importance of database systems, integration between two Geomatics sciences, GIS and Remote Sensing has been made in order to support and serve various sectors in Jordan. GIS has been used t...

Multistage Development of Müller-Achenbach model for Shape Memory Alloy

Simin Ataollahi Oshkovr — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.248.251

This research focused on the conceptual development of constitutive Müller-Achenbach model and proceeds to construct a model based on phase transition under changing temperature and load for variants...

MAM-An Aquivalence-based Dynamic Mass Balance Model for the Fate of Non-Volatile Organic Chemicals in the Agricultural Environment

Mohammad A. Batiha — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.252.259

A Multimedia Agricultural Model (MAM) for predicting the fate and transport of Non-Volatile Organic Chemicals (NVOCs) in the agricultural environment was presented. It is an expanded and modified vers...

Vector Control of a Variable Reluctance Machine Stator and Rotor Discs Imbricates

Abdelhamid Boucetta — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.260.265

This study was devoted, in its first part, to the configuration and the modelling of the Imbricate Discs Variable Reluctance Machine (IDVRM), which was simplified with the assumption of stator structu...

A Sliding Mode Command for a System of Coupled Reservoirs

Riadh Gamoudi — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.266.273

This study consisted to determine a discreet order by sliding method that was applied on a regulation procedure of a formed level by communicating reservoirs. The model that represents the system is d...

Behavior of Stabilized Peat Soils in Unconfined Compression Tests

Wong Leong Sing — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.274.279

Problem statement: Deep stabilized peat columns were known to be economical at forming foundations to support highway embankments constructed on deep peat land. However, failure in the formation of th...

Fuzzy Based Digital Automatic Voltage Regulator of a Synchronous Generator with Unbalanced Loads

A. Darabi — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.280.286

Voltage stability and power quality of the electrical systems depend on proper operation of the Automatic Voltage Regulators (AVR) of generators. Nowadays, design technology of the AVRs is being broad...

Water Hammer Analysis by Characteristic Method

A.R. Lohrasbi — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.287.294

Rapid changes in the velocity of fluid in closed conduits generate large pressure, which are transmitted through the system with the speed of sound. When the fluid medium is a liquid the pressure surg...

Combustion of Bimodal Nano/Micro Aluminum Suspension with New Reaction Rate Model

M. Bidabadi — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.295.301

In this study a mathematical model for combustion of bimodal particle in lean flow was developed. The difference between structure of flame in this work and previous ones was that, in those flame was ...

A Technical Review of Compressed Natural Gas as an Alternative Fuel for Internal Combustion Engines

Semin — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.302.311

Natural gas is promising alternative fuel to meet strict engine emission regulations in many countries. Compressed natural gas (CNG) has long been used in stationary engines, but the application of CN...

Design Analysis of High-Speed Axial-Flux Generator

M. Sadeghierad — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.312.317

Problem Statement: Axial flux permanent magnet machines are regarded as compact high efficiency generators for micro-turbines employed in the distributed power generation systems. High-speed rotor of ...

Crack Growth in Concrete Gravity Dams Based on Discrete Crack Method

A.R. Lohrasbi — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.318.323

Seepage is the most parameter in water management safety and in stable agricultural. This seepage is passed through the cracks that are present to some degree in hydraulic structures. They may exist a...

Analysis of a Beam Made of Physical Nonlinear Material on Nonlinear Elastic Foundation under a Moving Concentrated Load

E. Mardani — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.324.328

A prismatic beam made of a behaviorally nonlinear material was analyzed under a concentrated load moving with a known velocity on a nonlinear elastic foundation with a reaction [ qe = -K1W(1+ K2W2)]. ...

Control Strategy for Discontinuous Conduction Mode Boost Rectifier with Low Total Harmonic Distortion and Improved Dynamic Response

H.S. Athab — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.329.337

Due to its simplicity, the discontinuous conduction mode boost rectifier is potentially the least expensive active line-harmonics reducing circuit. Problem statement: The line current however, shows c...

Modeling, Simulation and Group Control of Distributed Static Series Compensators

Poria Fajri — 2008-12-19

American Journal of Engineering and Applied Sciences, Published online: 19 December 2008; doi:10.3844/ajeassp.2008.347.357

This study investigates the new concept of Distributed Static Series Compensator (DSSC); a small, light weight cylinder that clamps directly onto the transmission line conductor and has the ability to...

Optimal Production Planning of Electricity from Coal-Fired Power Plant Networks under Environmental Considerations

Habib H. Al-Ali — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.358.367

In this study, electricity production from a network of coal power plants and under environmental constraints is considered. Several pollutants are incorporated into the decision planning process incl...

Seismic Behavior of Vertical Shear Links made of Easy-Going Steel

Amir Saedi Daryan — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.368.377

Problem Statement: Since the time that steel was first used as a construction material, engineers have attempted to increase strength, reduce weight and produce more economical structures by using ele...

Chaos Control in Nonlinear Systems Using the Generalized Backstopping Method

A.R. Sahab — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.378.383

One of the most important nonlinear systems for checking the abilities of control methods is chaos. In this study chaos in Lorenz system was used for checking abilities of new control method. This new...

Aging Study and Lifetime Estimation of Transformer Mineral Oil

Mohammad R. Meshkatoddini — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.384.388

Problem statement: Power transformer is the most expensive equipment in electrical network; and the mineral oil has the main roles of insulating and cooling in it. Oil is subjected to the degradation ...

Intelligent Estimation of Compressive Strength of the Pavement Layers Stabilized by the Combination of Bitumen Emulsion and Cement

Mehrdad Aryafar — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.389.392

The Application of the different types of additive materials such as lime, cement bitumen and the combination of them are considered as a main issue by the relating experts. In order to promote the be...

Aerobic Biostabilization of Old MSW Landfills

M.C. Zanetti — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.393.398

Many years after the end of the cultivation phase, landfills may generate intense odours, toxic and explosive gases and heavily-polluted leachate. A wide-spreading trend in the management of MSW landf...

Analytical Investigation of Hyperbolic Equations via He's Methods

D.D. Ganji — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.399.407

Perturbation methods depend on a small parameter which is difficult to be found for real-life nonlinear problems. To overcome this shortcoming, two new but powerful analytical methods were introduced ...

Treatment of Wastewater by Natural Lagoon for its Reuse in Irrigation

M. Driche — 2008-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2008; doi:10.3844/ajeassp.2008.408.413

The process of natural lagoon consists in purifying the waste water by simple flow of the effluent in not very deep ponds where proliferate bacteria, algae and other living organisms, under a surround...