Volume 4, Issue 11 (2007) | American Journal of Applied Sciences

Asymptotic Confidence Limits for a Repairable System with Standbys Subject to Switching Failures

Jau-Chuan Ke — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.834.847

This paper studies system performance measures and asymptotic confidence limits for the mean time to failure, steady-state availability, steady-state failure frequency of a repairable system which two...

A New Digital Signature Scheme Based on Mandelbrot and Julia Fractal Sets

Mohammad Ahmad Alia — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.848.856

This paper describes a new cryptographic digital signature scheme based on Mandelbrot and Julia fractal sets. Having fractal based digital signature scheme is possible due to the strong connection bet...

Automatic Arabic Hand Written Text Recognition System

Ismael Ahmad Jannoud — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.857.864

Despite of the decent development of the pattern recognition science applications in the last decade of the twentieth century and this century, text recognition remains one of the most important probl...

A BI-RADS Based Expert Systems for the Diagnoses of Breast Diseases

Umi Kalthum Ngah — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.865.873

We proposed an expert system based on the interpretation of mammographic and ultrasound images that may be used by expert and non-expert doctors in the interpretation and classifying of patient cases...

Adding Quality of Service Extensions to the Enhanced Associativity Based Routing Protocol for Mobile Ad Hoc Networks (MANET)

Ayman Mansour Murad — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.874.879

This paper described how to discover routes that can satisfy QoS service requirements by using extensions to the Enhanced Associativity Bases Routing Protocol (EABR). These extensions were added to t...

Numerical Simulation of 2_D Turbidity Currents and Wall Jet

M.H. Shojaeefard — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.880.886

Dense underflows are continuous currents, which move down the slope due to the fact that, their density are heavier than ambient water. In turbidity currents the density differences arises from suspen...

Three Algorithms for Flexible Flow-shop Scheduling

Tzung-Pei Hong — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.887.895

Scheduling is an important process widely used in manufacturing, production, management, computer science, and so on. Appropriate scheduling can reduce material handling costs and time. Finding good s...

A 4⨯1 L-probe fed Inverted Hybrid E-H Microstrip Patch Antenna Array for 3G Application

Mohammad Tariqul Islam — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.896.901

This paper presents a compact and broadband microstrip patch antenna array (BMPAA) with uniform linear array configuration of 4x1 element for 3G applications. The 4⨯1 BMPAA was designed and deve...

Fourier transforms Investigation of Global Solar Radiation at True Noon: in the Desert climatology

U. Ali Rahoma — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.902.907

The aim of this work has been to obtain a typical annual time a function by the application of a calculation procedure based on a Fourier analysis to global solar radiation data of nine years at Helwa...

Development of Criteria for Slab Compaction of Laboratory Roller Compactor (Turamesin)

R. Muniandy — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.908.911

Laboratory experiments should simulate to a high degree the conditions in the field, especially in term of compaction procedures. Presently available laboratory compaction methods do not seem to be ab...

Open Circuit Field Distribution and Induced Voltage of a Cylindrical Permanent Magnet Linear Generator

Wijono — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.912.917

This paper deals with the analytical computation of the magnetic field of a cylindrical permanent magnet linear generator. It offers an alternative solution to the magnetic field problem. A new approa...

A Biomechanical Composite Model to Determine Effective Elastic Moduli of the CNS Gray Matter

Mehdi Khoshgoftar — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.918.924

Brain tissue is a heterogeneous material with complicated microstructural features. Models based on microstructure can lead to more accurate and physically realistic predictions of mechanical characte...

Orientation Detection of Sensed Objects using a Four Sensor Tactile System with Applications in Bio-Robotics

Ashkan Mirbagheri — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.925.931

A novel approach is presented that can be used in determining the sensitivity of a four sensor tactile sensor to the orientation of the contacted objects. Computer simulations were conducted by using ...

New Integer Programming Formulations of the Generalized Travelling Salesman Problem

Petrica C. Pop — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.932.937

The Generalized Travelling Salesman Problem, denoted by GTSP, is a variant of the classical travelling salesman problem (TSP), in which the nodes of an undirected graph are partitioned into node sets ...

An Economic Perspective of Kaesong Industrial Complex in North Korea

Seok Yoon — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.938.945

Constructing of Kaesong industrial complex in North Korea is led by private enterprises such as Hyundai group, under the agreement of two Korean governments. So far the constructing of Kaesong industr...

Side Effects and Complications of Dental Materials on Oral Cavity

Zahra Atai — 2007-11-30

American Journal of Applied Sciences, Published online: 30 November 2007; doi:10.3844/ajassp.2007.946.949

Development of dental materials has had a great impact on the modern dentistry. The materials ranging from polymers to metals have different applications in dentistry. Besides their important role in ...