Volume 5, Issue 11 (2008) | American Journal of Applied Sciences

Performance Comparison of Three-Phase Shunt Active Power Filter Algorithms

Moleykutty George — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1424.1428

The usage of parallel converters is ever increasing. However, the voltage and current harmonics, zero-sequence and negative- sequence components of voltage and current and reactive power present in pa...

Prediction of Double Layer Grids' Maximum Deflection Using Neural Networks

Reza Kamyab Moghadas — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1429.1432

Efficient neural networks models are trained to predict the maximum deflection of two-way on two-way grids with variable geometrical parameters (span and height) as well as cross-sectional areas of th...

Interactive and Automatic Query Expansion: A Comparative Study with an Application on Arabic

Ghassan Kanaan — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1433.1436

Much attention has been paid to the relative effectiveness of Interactive Query Expansion (IQE) versus Automatic Query Expansion (AQE). This research has been shown that automatic query expansion (col...

Synthesis of Mesoporous Titania with Surfactant and its Characterization

T. Benkacem — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1437.1441

A mesoporous titania was obtained by gelation from Ti-alkoxide in acidic solutions with addition of surfactant cetyltrimetylammonium bromide (CH3(CH2)15N(CH3)3Br) using a sol-gel process. The effects ...

Implementation of Computational Grid Services in Enterprise Grid Environments

R.J.A. Richard — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1442.1447

Grid Computing refers to the development of high performance computing environment or virtual super computing environment by utilizing available computing resources in a LAN, WAN and Internet. This ne...

Experimental Modeling of Pile-Leg Interaction in Jacket Type Offshore Platforms Cyclic Inelastic Behavior

M.R. Honarvar — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1448.1460

Offshore platforms in seismically active areas should be designed to survive in the event of severe ground excitations with no global structural failure. The annulus between the pile and leg in jacket...

An Order Six Zero-Stable Method for Direct Solution of Fourth Order Ordinary Differential Equations

Kayode Sunday Jacob — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1461.1466

A zero-stable numerical method for direct solution of fourth order differential equations reduces the computational burden and computer time wastage involved in the method of reducing such equations t...

Recognition of Factors Affecting Students Trust in Virtual Universities Using Delphi Method

Mohammad Ali Sarlak — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1467.1473

At the present time in Islamic Republic of Iran the Virtual Universities are operating beside the Non- virtual universities. The problem that virtual universities now confront is low level of students...

Characterization of Frequency Mode inside an Open Cavity for Different Shape Ratio

Hallek Khouloud, — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1474.1479

A number of studies have referred to the existence of a vortex cell within an urban street canyon. The understanding of vortex dynamics or vorticity distribution is a such configuration is of great in...

The Effect of Internal Marketing on Organizational Commitment in Iranian Banks

Atousa Farzad — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1480.1486

The purpose of this research is to investigate the effects of internal marketing criteria on organizational commitment of employees among Iranian state-owned banks. Internal marketing is a planned ef...

Traffic Signal Using Smart Agent System

Cheonshik Kim — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1487.1493

In this research, we propose an electro-sensitive traffic light using the smart agent algorithm to reduce traffic congestion and traffic accidents. The multi-agent system approach can provide a new an...

The Application of Multi-Agent Technology on Transient Stability Assessment of Iraqi Super Grid Network

Afaneen A. Abood — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1494.1498

The aim of this research is improving the Iraqi control center's capabilities for monitoring and controlling the electrical network by adopting the properties of multi-agent technology to enhance powe...

A New Method for Optimal Harmonic Meter Placement

A. Ketabi — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1499.1505

In this research, a new method based on Singular Value Decomposition (SVD) is proposed to solve the problem of optimal placement of meters for static estimation of harmonic sources in a power system. ...

A Study of Mathematics Web-Based Learning in Schools

Mansoor Al-A’ali — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1506.1517

Teaching Mathematics to intermediate school boys is a challenging process which can greatly benefit from software technology and web-based learning. In this research we study the difficulties and oppo...

Speed Estimation of Adaptive Fuzzy-Controlled Piezo-Electric Motor using MLP-Neural Network

Shebel ALSABBAH — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1518.1521

The speed of ultrasonic motor of piezo-electric type is usually measured using mechanical sensors such as pulse encoders. However, these sensors are costly and bulky. In this paper, a numerical speed ...

A Novel Fast Computing Method for Framelet Coefficients

Hadeel N. Al-Taai — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1522.1527

The relatively new field of framelets shows promise in removing some of the limitations of wavelets. Several applications have benefited from the use of frames, for example, denoising and signal codin...

Implementing a Large Data Bus VLIW Microprocessor

Weng Fook Lee — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1528.1534

Microprocessors have grown tremendously in its computing and data crunching capability since the early days of the invention of a microprocessor. Today, most microprocessors in the market are at 32 bi...

Amphoteric Starch in Simultaneous Process Preparation with Box-Behnken Design for Optimal Conditions

Sopa Cansee — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1535.1542

Cassava starch was chemically modified to produce an amphoteric starch. The amphoteric starch was prepared in a simultaneous process which was evaluated in relation to four factors: temperature (45-55...

Traveling Salesman Approach for Solving Petrol Distribution Using Simulated Annealing

Zuhaimy Ismail — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1543.1546

This research presents an attempt to solve a logistic company's problem of delivering petrol to petrol station in the state of Johor. This delivery system is formulated as a travelling salesman proble...

Boundary Shear Stress around Bridge Piers

Mirali Mohammadi — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1547.1551

This research presents the measurement of boundary shear stress around the base of some elliptical shaped bridge piers using Preston tube technique. The uniform flow was established and a series of me...

A Novel Thermooptic Polymer Switch Based on Directional Coupler Structure

Abu Sahmah Mohd Supa’at — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1552.1557

A novel thermooptic (TO) polymer switch based on directional coupler structure is proposed for the first time. The key element of the proposed switch is a buried square core polymer waveguides which h...

On the Views of Carbon Tax in Korea

Heon-Goo Kim — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1558.1561

To comply with the UNFCCC agreement, many countries are expected to make efforts to reduce the greenhouse gas emission level down to 1990 by the year of 2012. The agreement is intended to reduce the c...

Image Compression and Reconstruction using Cubic Spline Interpolation Technique

R. Muthaiah — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1562.1565

A new dimension of image compression using random pixels of irregular sampling and image reconstruction using cubic-spline interpolation techniques proposed in this paper. It also covers the wide fiel...

The Numerical Estimation of Thermal Contact Resistance in Contacting Surfaces

M.H. Shojaefard — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1566.1571

For some manufacturing processes, the heat transfer between the components, the tools and the environment has an effect on tool-life and the accuracy of the formed component. Consequently, the measure...

Heat Transfer Investigation of Intake Port Engine Based on Steady-State and Transient Simulation

Semin — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1572.1579

This research is presents the gas flow heat transfer investigation in the intake port of four stroke direct injection compression ignition engine using GT-Suite software for steady-state and transient...

Harmonics Phase Shifter for a Three-Phase System with Voltage Control by Integral-Cycle Triggering Mode of Thyristors

I. Badran — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1580.1587

In integral-cycle triggering mode of voltage control, subharmonic as well as higher order harmonic components are generated in the load voltage waveforms of a three-phase system. These harmonic compon...

Applied Issues of Agritourism Cooperation and Sustainable Endogenous Development

Helen Theodoropoulou — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1588.1594

This research aims at examining how an agritourism cooperative and its activities promote endogenous development using local human, natural and technological resources in a sustainable way with other ...

Collocation Discrete Least Squares (CDLS) Method for Elasticity Problems and Grid Irregularity Effect Assessment

M. Naisipour — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1595.1601

A meshless approach, collocation discrete least square (CDLS) method, is extended in this paper, for solving elasticity problems and grid irregularity effect is assessed. In the present CDLS method, t...

Case Study: A Strategic Research Methodology

Khairul Baharein Mohd Noor — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1602.1604

This research reviews the literature on case study as a strategic qualitative research methodology. Although case studies have been criticised by some authors as lacking scientific rigour and do not a...

On Embeddings of Hamiltonian Paths and Cycles in Extended Fibonacci Cubes

Ioana Zelina — 2008-11-30

American Journal of Applied Sciences, Published online: 30 November 2008; doi:10.3844/ajassp.2008.1605.1610

The interconnection network is an essential component of a distributed system or of a supercomputer based on large-sale parallel processing. Because in distributed systems the communication between pr...