Volume 4, Issue 6 (2007) | American Journal of Applied Sciences

A Fuzzy-GAs Model for Determining Varied Irrigation Efficiency

Anongrit Kangrang — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.339.345

Irrigation efficiency is necessary information in water resource management. We proposed fuzzy sets approach for estimating varied irrigation efficiency. Genetic algorithms technique was applied to ca...

Adaptive Control of Robotic Manipulators with Improvement of the Transient Behavior Through an Intelligent Supervision of the Free-Design Parameters and the Sampling Period

M. De La Sen — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.346.353

An adaptive control scheme for mechanical manipulators proposed. The control loop consists of a network for learning the robot's inverse dynamics and on-line generating the control signal. Some simula...

Plastic Solid Waste Assessment in the State of Kuwait and Proposed Methods of Recycling

S. Al-Salem — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.354.356

A proper assessment of Solid Plastic Waste (SPW) in Kuwait will provide a greater understanding to the industry of plastic manufacturing and manufacturers as well as direct the strategic future plans ...

Finite Element Analysis of Plasticity- Induced Fatigue Crack Closure with Singular Element

R. Rahgozar — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.357.361

Developing a new method is presented to compute crack opening values in planar geometries using the crack surface nodal force distribution under minimum loading as determined from finite element analy...

Supervision Practices for Foreign Graduate Research Students

Norhasni Zainal Abiddin — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.362.370

Past research had shown that only highly unusual graduate research students had successfully completed their research degree programmes while the relationship with their supervisors was poor. There we...

A Fixed Point Theorem for Contraction Type Mappings in Menger Spaces

Servet Kutukcu — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.371.373

We proved a common fixed point theorem for a sequence of self maps satisfying a new contraction type condition in Menger spaces, results extended and generalize some known results in metric spaces and...

The Effect of Physical Refining on Palm Vitamin E (Tocopherol, Tocotrienol and Tocomonoenol)

Chiew Wei Puah — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.374.377

This study reports the effect of physical refining on palm vitamin E including α- tocopherol, α-, γ and α-tocotrienols as well as α- tocomonoenol. A method using HPLC with fluorescence dete...

A New Efficient-Silicon Area MDAC Synapse

Zied Gafsi — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.378.385

Using the binary representation ΣiDi2i in the Multiplier digital to analog converter (MDAC) synapse designs have crucial drawbacks. Silicon area of transistors, constituting the MDAC circuit, increas...

Design and Development of a Photovoltaic Power System for Tropical Greenhouse Cooling

Faisal Mohammed Seif Al-Shamiry — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.386.389

Renewable energy sources like photovoltaic (PV) panels are used today in many applications. Natural ventilation in tropical greenhouse is common method for ventilation, which gives higher inside tempe...

The Use of Polyethylene in Hot Asphalt Mixtures

Mohammad T. Awwad — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.390.396

The increase in road traffic during the last two decades in combination with an insufficient degree of maintenance due to shortage in funds has caused an accelerated and continuous deterioration of th...

Numerical Analysis of Pulsatile Blood Flow in a Stented Human Coronary Artery with a Flow Divider

Vahab Dehlaghi — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.397.404

Shear stress is known to play a central role in restenosis formation and is sensitive to stent geometry. Local flow alterations created by a different stents without and with flow divider were studied...

A Main Object-oriented Projective Invariant Image Watermarking Approach

Malik F. Alamaireh — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.405.409

Digital Watermarking is a technology that enables to protect distributed digital content from unauthorized reuse. Robust watermarks must be able to survive a range of geometrical "attacks," such as im...

Effect of Covers and Rainfall on Soil and Water Conservation Using a Tilting Flume Model

S. Compliew — 2007-06-30

American Journal of Applied Sciences, Published online: 30 June 2007; doi:10.3844/ajassp.2007.410.416

The effect of stone and vegetative covers was evaluated for soil and water conservation in a waterway on salty soils in the Northeast of Thailand. Experiments were conducted on a hydraulic tilting flu...