Volume 4, Issue 3 (2011) | American Journal of Engineering and Applied Sciences

Experimental Investigation on Micro-Welding of Thin Stainless Steel Sheet by Fiber Laser

Mohd Idris Shah Ismail — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.314.320

Problem statement: The miniaturization of components plays an important role for manufacturing in electrical and electronic industries. The joining technology of thin metal sheets has been strongly re...

Electrophysiology and Biopotential Issues on Human Electrocardiogram: A Review

Mahmoud Ahmed Suliman Ali — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.321.327

Problem statement: The heart is the first organ and most importantly to form in the body, where is found the most powerful generator of electromagnetic energy in the human body. Electrophysiology was ...

Effects of the Contact Resistivity Variations of the Screen-Printed Silicon Solar Cell

Shahrul Anizan — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.328.331

Problem statement: Unmatched combination of emitter and base contact resistance will influence the total performance of the solar cell. To optimize this combination, single crystalline silicon solar c...

Evaluating some Reliability Analysis Methodologies in Seismic Design

A. El Ghoulbzouri — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.332.340

Problem statement: Accounting for uncertainties that were present in geometric and material data of reinforced concrete buildings was performed in this study within the context of performance based se...

A Genetic Algorithm for Scheduling n Jobs on a Single Machine with a Stochastic Controllable Processing, Tooling Cost and Earliness-Tardiness Penalties

Mohamed Ali Abdel-Fattah Mansour — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.341.349

Problem statement: In this research, we addressed the problem of minimizing the earliness-tardiness penalties and manufacturing costs of a single machine with a stochastic controllable processing and ...

Comparison of Maximum Gear-Tooth Operating Bending Stresses Derived from Niemann's Analytical Procedure and the Finite Element Method

Andonios D. Tsolakis — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.350.354

Problem statement: Main purpose of this study was to investigation toothed gear loading problems using the Finite Element Method. Approach: We used Niemann’s equations to compare maximum bending str...

Optimization of Energy Dispersive X-Ray Fluorescence Spectrometer to Analyze Heavy Metals in Moss Samples

Mohd Zahari Abdullah — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.355.362

Problem statement: Mosses had been widely used as bioindicator especially to study the levels of trace metals pollutants in the surrounding ambient air because of their high efficiency to accumulate h...

Application of Multiple Imputations to Freight Transportation Survey Data: A Case Study of Commodity Flow Survey

Terdsak Rongviriyapanich — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.363.371

Problem statement: Freight transportation data was indispensable input to transportation planning. In Thailand, efforts had been put to collect freight movement data by conducting road side survey and...

Order Management in Supply Chain: A Case Study in Automotive Companies

Malihe Manzouri — 2011-08-18

American Journal of Engineering and Applied Sciences, Published online: 18 August 2011; doi:10.3844/ajeassp.2011.372.379

Problem statement: Predicting customer’s future orders had an essential role in planning appropriate strategy in a Supply Chain Management (SCM) implementation. Purpose of this study was to identify...

Stability and Ergonomic Design Features of Tractor Mounted Hydraulic Elevator for Coconut Harvesting

Kishor Purushottamrao Kolhe — 2011-09-20

American Journal of Engineering and Applied Sciences, Published online: 20 September 2011; doi:10.3844/ajeassp.2011.380.389

Problem statement: The most important design criterion of mechanized device was safety; safety comprises both the safety of operator and safety of maintenance personnel. Failures and safety of harvest...

Optimized High Frequency Signal Injection Based Permanent Magnet Synchronous Motor Rotor Position Estimation Applied to Washing Machines

Olfa Bel Hadj Brahim Kechiche — 2011-09-29

American Journal of Engineering and Applied Sciences, Published online: 29 September 2011; doi:10.3844/ajeassp.2011.390.399

Problem statement: This study investigates a novel optimized scheme of a High Frequency Signal Injection (HFSI) based sensor less technique in order to carry out a precise and robust rotor position er...

Analysis of the Transport Properties of Tyre Fiber Modified Concrete

G. Senthil Kumaran — 2011-09-30

American Journal of Engineering and Applied Sciences, Published online: 30 September 2011; doi:10.3844/ajeassp.2011.400.404

Problem statement: Nowadays, the use of waste tyre in concrete has become technically feasible and the tyre mixed concrete is light weight and called as rubberized concrete. Still the research is goin...

Frictional Impact Modeling of a Cereal Thresher

Christian Okechukwu Osueke — 2011-11-29

American Journal of Engineering and Applied Sciences, Published online: 29 November 2011; doi:10.3844/ajeassp.2011.405.412

Problem statement: There is no point producing cereal threshing models that cannot replicate its performance on the field. The frictional impact that occurs between the crop surface and threshing cyli...

Evaluation of Common Maintenance Methods for Flexible Pavements

Asma T. Ibraheem — 2011-11-29

American Journal of Engineering and Applied Sciences, Published online: 29 November 2011; doi:10.3844/ajeassp.2011.413.424

Problem statement: With the increasing use and awareness of pavement management systems and the growing emphasis on asset management of pavement infrastructure, it is important to strengthen the maint...

A Comparative Performance Analysis of Multiple-Input Multiple-Output using MATLAB with Zero Forcing and Minimum Mean Square Error Equalizers

Bara'u Gafai Najashi — 2011-11-29

American Journal of Engineering and Applied Sciences, Published online: 29 November 2011; doi:10.3844/ajeassp.2011.425.428

Problem statement: Multiple-Input Multiple-Output systems (MIMO) were regarded as one of the most promising technologies in field of wireless communication. Generally considered as one of the several ...

Design and Implementation of an Efficient Software Communications Architecture Core Framework for a Digital Signal Processors Platform

Wael A. Murtada — 2011-11-29

American Journal of Engineering and Applied Sciences, Published online: 29 November 2011; doi:10.3844/ajeassp.2011.429.434

Problem statement: The Software Communications Architecture (SCA) was developed to improve software reuse and interoperability in Software Defined Radios (SDR). There had been performance concerns sin...