Volume 2, Issue 4 (2009) | American Journal of Engineering and Applied Sciences

Man in Outer Space Without a Special Space Suit

Alexander Bolonkin — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.573.579

Problem statement: Many people dreamed about a living human in space without the encumbrance of a complex space suit. Unfortunately no scientific research and inventions: How to make it? Approach: Pur...

Synthesis and Characterization of Hot-Roll and Cold-Roll Byproduct-Derived Strontium Hard Ferrites

H. S. Woon — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.580.583

Problem statement: Ceramic permanent magnets or more commonly known as strontium hexagonal ferrites have been widely used in permanent magnetic materials as they provide high remanence, high coercivit...

Numerical Investigation of an Industrial Robot Arm Control Problem Using Haar Wavelet Series

S. Nandhakumar — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.584.589

Problem statement: An error minimization in robot arm dynamics improves operations and performance of production systems. Many contributions have been made in area of robot dynamics since the earliest...

Combined Thermal Radiation and Mixed Convection in an Inclined Circular Duct

W. Lakhal — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.590.602

Problem statement: Modeling thermal radiation with simultaneous buoyancy and forced convection for real gases flowing inside system with complex geometry is a difficult task encountered in engineering...

A Novel Approach for Cooling Electronics Using a Combined Heat Pipe and Thermoelectric Module

Banjerd Saengchandr — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.603.610

The development of effective cooling systems for microprocessors, specifically for CPU and other computer chips, is greatly important due to growth of high speed performance chips, which operate at el...

Vision-Based Obstacle Avoidance of Mobile Robot Using Quantized Spatial Model

Salaheddin Odeh — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.611.619

Problem statement: Problem of moving a robot through unknown environment has attracted much attention over past two decades. Such problems have several difficulties and complexities that are unobserve...

Error Resistant Real-Time Transport Control Protocol

S. Shahbazi — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.620.627

Problem statement: Real-time Transport Control Protocol (RTCP) protocol has been the subject of various criticisms due its problematic performance in large-scale networks. S-RTCP is a protocol with hi...

Calculation of Total Cost, Tolerance Based on Taguchi's, Asymmetric Quality Loss Function Approach

R. Sampath Kumar — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.628.634

Problem statement: Current world market force the manufacturing sectors to develop high quality product and process design with minimum possible cost. About 80% of problems in production units may be ...

Efficient Detection Algorithm for a Multiple-Input and Multiple-Output Multiuser Multi-Carrier Code Division Multiple Access in Time-Varying Channels

Fares Sayadi — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.635.642

Problem statement: Maximum Likelihood (ML) decoding has been applied for the uplink of a Multi-Carrier Code Division Multiple Access (MC-CDMA) system based on Orthogonal Frequency Division Multiplexin...

A Cheap Aerial Gas Pipeline

Alexander A. Bolonkin — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.643.654

Problem statement: At present time gas pipelines are designed from steel and located on ground surface. That is very expensive and building requests a lot of time. Research and utilization of an old a...

Design and Simulation of Microelectromechanical System Capacitive Shunt Switches

Haslina Jaafar — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.655.660

Problem statement: RF MEMS switch is one of MEMS area that creates devices that have great potential to improve the performance of communication circuits and systems and enables the realization of mic...

Effect of Sr Substitution on Structure and Thermal Diffusivity of Ba_1-xSr_xTiO₃ Ceramic

S.A. Halim — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.661.664

Problem statement: The aim of this research was to study the effect of Sr substitution on structure and thermal diffusivity of Bal-xSrxTiO3 ceramic at room temperature. Approach: Structural and therma...

Microstructure Affecting Cutting Quality in Fine Blanking Process

Bopit Bubphachot — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.665.668

Problem statement: Fine blanking process is a high precision process and worldwide in developed countries. Since specimen does not occur fracture on the cutting edge and it is not necessary to decorat...

Improved Coupled Tank Liquid Levels System Based on Swarm Adaptive Tuning of Hybrid Proportional-Integral Neural Network Controller

M.S. Ramli — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.669.675

Problem statement: Accuracy and stability of many systems in chemical and process industries which has Two-Input Two-Output (TITO) is one of the key factors of process which have cross coupling betwee...

A New Engineering Method for Fuzzy Reliability Analysis of Surge Control in Centrifugal Compressor

Ahmed Hafaifa — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.676.682

Problem statement: The surge phenomenon in the centrifugal compressor, the non-linearities and uncertainties of the compression system make it impossible to use a conventional controller over a wide r...

Converting of Matter to Nuclear Energy by AB-Generator

Alexander Bolonkin — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.683.693

Problem statement: Researcher offered a new nuclear generator which allowed to convert any matter to nuclear energy in accordance with Einstein equation E = mc2. The method was based upon tapping the ...

Quantum Key Distribution Using Decoy State Protocol

Sellami Ali — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.694.698

Problem statement: Quantum key distribution provides unconditional security guaranteed by the fundamental laws of quantum physics. Unfortunately, for real-life experimental set-ups, which mainly based...

A Novel High Stop Band All Complementary MOSFET Switched-Capacitor Filter

Moussa Abdallah — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.699.702

Problem statement: Filters are widely used in various applications including communications, electronics and biomedical engineering. The performance and size of the filter is of interest especially in...

Solving the State Assignment Problem Using Stochastic Search Aided with Simulated Annealing

Walid M. Aly — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.703.707

Problem statement: Solving the state assignment problem means finding the optimum assignment for each state within a sequential digital circuit. These optimum assignments will result in decreasing the...

Mathematical Modeling of the Three Phase Induction Motor Couple to DC Motor in Hybrid Electric Vehicle

Zulkarnain Lubis — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.708.712

Problem statement: With emphasis on a cleaner environment and efficient operation, vehicles today rely more and more heavily on electrical power generation for success. Approach: Mathematical modeling...

Prediction Studies for the Performance of a Single Cylinder High Speed Spark Ignition Linier Engine with Spring Mechanism as Return Cycle

A.Z.M. Fathallah — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.713.720

Problem statement: Most concepts of linear engines were constructed as opposed pistons with complicated control devise to drive the engines. The advantage of the engines was their high overall efficie...

Intrusion Preventing System using Intrusion Detection System Decision Tree Data Mining

Syurahbil — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.721.725

Problem statement: To distinguish the activities of the network traffic that the intrusion and normal is very difficult and to need much time consuming. An analyst must review all the data that large ...

Carbon Dioxide Transfer with Chemical Equilibrium Reactions: An Alternative Mathematical Approach

A. Shanableh — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.726.734

Problem statement: Despite intensive research efforts on CO2 transfer, mathematical models that describe the dependence of the CO2 transfer rate on the pH and the degree of rate enhancement due to CO2...

The Impact of Companies' Age on Safety Culture in the Metal Products Industry

Maryam Ooshaksaraie — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.735.742

Problem statement: Safety culture is a complex structure in an organization that includes values and attitudes, most of which are potentially changeable and related to actual accident behavior. In thi...

A Dual-Slope Integration Based Analog-to-Digital Convertor

Hasan Krad — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.743.749

Problem statement: With the advent of the advanced technology and the need for more advanced equipment, the current progress and development of electronic instruments stimulate more interest and effor...

Steel Piling Corrosion Management of Al-Zubare Harbor

Mohammed H. Hafiz — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.750.753

Problem statement: Damage due to corrosion is a significant problem worldwide. Countries around the world have estimated that the cost of corrosion to their national economies to be 3-4% of their gros...

Wireless Communication with a Microprocessor Based Ultrasonic Meter for Flow Measurements

Mahmoud Z. Iskandarani — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.754.758

Problem statement: Although the traditional metering system and method for controlling flow is generally safe, reliable and robust, it does suffer certain drawbacks, such as limited accuracy and the a...

Relaxation of Residual Stress Part 2: Relaxation of Stage 2

Omar Suliman Zaroog — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.759.763

Problem statement: Compressive residual stress induced by surface treatment such as shot peening increased component’s fatigue life. However the initial induced residual stresses relax during compon...

Statistical Models for Hardened Properties of Self-Compacting Concrete

Arabi N.S. Al Qadi — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.764.770

Problem statement: For predicting workability and hardened properties of Self-Compacting Concrete (SCC) no well known explicit formulation. Approach: Statistical models were carried out to model the i...

Wireless Phones Electromagnetic Field Radiation Exposure Assessment

A. D. Usman — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.771.774

Problem statement: Inadequate knowledge of electromagnetic field emitted by mobile phones and increased usage at close proximity, created a lot of skepticism and speculations among end users on its sa...

Restrained Shrinkage-Induced Cracking of Light Weight High Performance Fiber Reinforced Cementitious Composites

Shaikh Faiz Uddin Ahmed — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.775.780

Problem statement: Shrinkage induced cracking cause damage to reinforced concrete structures. An experimental study was conducted on restrained shrinkage test of cement mortar and light weight High Pe...

Robust of Doppler Centroid for Mapping Sea Surface Current by Using Radar Satellite Data

Mazlan Hashim — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.781.788

Problem statement: Sea surface current retrieving from Synthetic Aperture Radar (SAR) is required standard methods due to the complexity of sea surface ocean imaging in SAR data. In this context, vari...

Evolutionary Algorithm Definition

Nada M.A. AL-Salami — 2009-12-10

American Journal of Engineering and Applied Sciences, Published online: 10 December 2009; doi:10.3844/ajeassp.2009.789.795

Problem statement: Most resent evolutionary algorithms work under weak theoretical basis and thus, they are computationally expensive. Approach: This study discussed the use of new evolutionary algori...

Improved Continuing Losses Estimation Using Initial Loss-Continuing Loss Model for Medium Sized Rural Catchments

Mahbub Ilahee — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.796.803

Problem statement: The rainfall based design flood estimation techniques are commonly adopted in hydrological design and require a number of inputs including information on soil loss characteristics. ...

Finite Element Analysis of Composite Hardened Walls Subjected to Blast Loads

Girum S. Urgessa — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.804.811

Problem statement: There is currently no standard design guideline to determine the number of composites needed to retrofit masonry walls in order to withstand a given explosion. Past design approache...

An Eigenstructure Assignment for a Static Synchronous Compensator

Ahmad N. Al-Husban — 2009-12-31

American Journal of Engineering and Applied Sciences, Published online: 31 December 2009; doi:10.3844/ajeassp.2009.812.816

Problem statement: Power flow through an AC transmission line is influenced by three basic electrical parameters, which are line impedance, magnitudes and phase-shift angle between the sending and rec...