Volume 2, Issue 9 (2005) | American Journal of Applied Sciences

An HIV/AIDS Model with Variable Force of Infection and its Application to the Epidemic in Uganda

Flugentius Baryarama — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1274.1278

An HIV/AIDS model is formulated with variable force of infection for the adult population. Its actions are reduced to a prevalence equation that is a non-logistic equation whose explicit solution is d...

Asymptotic Hyperstability of Dynamic Systems with Point Delays

M. De la Sen — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1279.1282

It is proved that a linear time-invariant system with internal point delays is asymptotically hyperstable independent of the delays if an associate delay-free system is asymptotically hyperstable and ...

Modified Shear Box Test Apparatus for Measuring Shear Strength of Unsaturated Residual Soil

Bujang B.K. Huat — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1283.1289

Residual soils occur in most countries of the world but the greater areas and depths are normally found in tropical humid areas. Most of these soils exhibit high suctions for most of the year. The she...

Pressure-sensitivity Effects on Toughness Measurements of Compact Tension Specimens for Strain-hardening Solids

Abdulhamid A. Al-Abduljabbar — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1290.1295

The path-independent J-integral is used as a fracture prediction criterion for loading beyond the elastic limit as Linear Elastic Fracture Mechanics (LEFM) cannot be applied. While J was originally de...

A Feasibility Study of Challenges and Opportunities in Computational Biology: A Malaysian Perspective

R. J.A. Richard — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1296.1300

The term computational biology refers to the knowledge derived from a computer analysis of biological data that includes identification of genes in DNA sequence of different organisms, prediction of s...

The Impacts of Total System Design Factors on Human Performance in Power Plants

A. Azadeh — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1301.1304

The objective of this study is to evaluate the impact of total system design factors (TSD) on human performance in a power plant. The TSD factors are defined as design factors, which have an impact on...

Supplying a Common Distribution Load through Two Different Sources

M. H. Naeem — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1305.1308

Phase angle difference between any two Busbar voltages of a big power system varies with the loading and operating condition of the power system. Supplying a common distributed load from these two pha...

A Methodology to Segment the Text for Index Terms

Muhammad Shoaib — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1309.1314

The problem of information overload is a hot issue with the growth of the world wide web. The need for the tools those should be able to absorb this huge information and eliminate this problem is evid...

Comparative Analysis of Economic Policies in Korea and Malaysia after the Financial Crisis

Seok Yoon — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1315.1320

The Asian Economic Crisis of 1997 escalated from Southeast Asia and landed in Northeast Asia. However, in the process of recovery from the crisis, two countries took the opposite approaches. The Korea...

Induction of Micronuclei in Mice Lymphocytes Exposed to Microwave and Toluene

S. B. Mortazavi — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1321.1324

Increasing applications of microwave radiation are of great concern with regard to public health. Several studies have been conducted detect effects of microwave exposure genetic material leading to n...

Simulations of Two-dimensional High Speed Turbulent Compressible Flow in a Diffuser and a Nozzle Blade Cascade

K. C. Ng — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1325.1330

This research describes the development of a new structured 2D CFD solver for compressible flow. The high-speed turbulent flow in a diffuser and a cascade of nozzle blade is predicted using standard k...

Codesign Methodology of Real-time Embedded Controllers for Electromechanical Systems

Slim Ben Saoud — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1331.1336

Under increasing time-to-market pressures in the electric drives industries, the development time of new algorithms and new control systems including their debugging time must be minimized. This requi...

Indigenous Methods in Preserving Bush Mango Kernels in Cameroon

Zac Tchoundjeu — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1337.1342

Traditional practices for preserving Irvingia wombolu and Irvingia gabonensis (bush mango) kernels were assessed in a survey covering twelve villages (Dongo, Bouno, Gribi [East], Elig-Nkouma, Nkom I, ...

β-Spline Estimation in a Semiparametric Regression Model with Nonlinear Time Series Errors

Jinhong You — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1343.1349

We study the estimation problems for a partly linear regression model with a nonlinear time series error structure. The model consists of a parametric linear component for the regression coefficients ...

Cost Comparison between Stone Mastic Asphalt and Asphalt Concrete Wearing Course

Salihudin Hassim — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1350.1355

Stone Mastic Asphalt (SMA) technology has been introduced to Malaysia since the 1990’s. Since then, several trials had lain projects had been initiated for the purpose of evaluating the mix on local...

Effects of Higher Order Dispersion Terms in the Nonlinear Schrodinger Equation

Robert Beech — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1356.1369

This study presents a concise graphical analysis of solitonic solutions to a nonlinear Schrodinger equation (NLSE). A sequence of code using the standard NDSolve function has been developed in Mathema...

Photocurrent and Photoluminescence Investigations of GaInNAs and GaInNAs(Sb) Quantum Wells Grown by Molecular Beam Epitaxy

S. Ben Bouzid — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1370.1374

We have investigated photocurrent (PC) and photoluminescence (PL) in sequentially grown GaInNAs/GaAs and GaInNAs(Sb)/GaAsSbN quantum wells. Photocurrent transitions are analyzed by theoretical calcula...

An Advance Approach to Evaluate the Performance of the TCP Networks

Ibrahiem M.M. El Emary — 2005-09-30

American Journal of Applied Sciences, Published online: 30 September 2005; doi:10.3844/ajassp.2005.1375.1379

In this study, we present a new approach for estimating the performance of the TCP network depending on a mathematical formula which converts the conceptual performance parameter to a valuable one. Wi...