Volume 4, Issue 3, March 2013

Empirical Perspective on the Effects of GSM Mobile Phones and Base Stations on Human Biological Systems

Oyinkanola Lateef Adewale, Adewole Olukorede O., Fajemiroye Joseph Ademola and Olumide Ajani

Physics Department, The Polytechnic, Ibadan, Nigeria
Physics Department, University of Ibadan, Ibadan, Nigeria
Department of Physics and Solar Energy, Bowen University, Iwo, Nigeria

Abstract– The invention of mobile phones has brought revolution to human activities but, there has been concerns raised about the possible health effects of the use of mobile phones and the erection of the masts in residential areas. This has led to various researches by different bodies to ascertain the veracity of the claim that mobile phones affect human beings adversely. Mobile phones operate on radio waves which are produced in the frequency range of 3MHz to 30,000MHz. Some SAR values are presented based on standard recommendation and available ratings as guide to assess possibility of damages to human tissue. The claim that mobile phones also cause cancer, brain tumor and cell damage is also discussed in this work and hopefully should allay the fear of imminent or possible health risks associated with the use of mobile phones and erection of communication transmission mast as inconsequential.

Keywords— GSM, Radio Waves, Interaction of Radio Waves, Cell Damage, SAR and Risks

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Optimization of the Process Parameters in Resistance Spot Welding Using Genetic Algorithm

A.S. Panchakshari and Dr. M.S. Kadam

Mechanical Engineering Department, Jawaharlal Engineering College, Aurangabad

Abstract– This paper focused on Non-Linear method like Genetic Algorithm to optimize the machining parameters of Resistance Spot Welding that is cycle time (Weld, Hold, and Squeeze) and current which are responsible for Nugget Diameter & Strength of weld. Low carbon cold rolled EDD grade material has been consider for response. Corresponding mathematical model based on factorial regression & ANOVA developed which expresses generalized relation between responses and variable input process parameters.

Keywords— Resistance Spot Welding, Nugget Diameter and Genetic Algorithm

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Physic-Chemical Characterization of ‘NGWO’ White Clay for Industrial Use

NWOSU D.C., EJIKEME P.C.N., and EJIKEME EBERE M.

Department of Chemical Engineering, Enugu State University of Science and Technology Enugu, Nigeria

Abstract– Ngwo White clay from Udi in Enugu State of Nigeria was analyzed mineralogically and physic–chemically. The results of the chemical analysis are as follows: SiO2:53.2%, Al203:5.906%, K2O:0.121%, Na2O:1.4175%, Fe2O3:0.444%, CaO: 0.0061%, PdO: 0.0049%. The results of the physical analysis are as follows: 8%moisture, 1%Ash, 1.67g/ml bulk density, 5.63PH and 4%Loss on Ignition. The ratio of SiO2:Al2O3 greater than one showed that it can be used in the synthesis of zeolite. The FTIR analysis for the mineral contents confirmed the presence of kaolinite, illite and calcite as the major minerals and chlorite, montmorillonite, quartz, and smectite as the minor minerals in the sample. Sodium montmorillonite found in the clay makes it suitable to be used in oil industry as a drilling mud.

Keywords— FTIR, Clay, Minerals, LOI and Zeolite

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An Insight into the Birth-Death Process With Reference to the Yeast Population

ALLI Sulaimon G., ADEWOLE Olukorede O., Egunjobi Kolawole A. and Olawuwo J.G.

Department of Mathematics and Statistics, The Polytechnic, Ibadan
Department of Physics, University of Ibadan, Ibadan
Department of Physics, Taye-Solarin University of Education, Ogun State

Abstract– A biological or physical process faithfully described by one form of linear homogenous or non homogenous differential equation or relevant analytic model can be explicitly analyzed. The birth-death process with delineation of appropriate models is discussed. Essential reference is made to the logistic curve illustrating the yeast population.

Keywords— Analytic Solution, Birth Process, Birth-Death Process and Logistic Curve

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A Model for Cost Estimation of Component-Based Software in Object-Oriented Environment

Warda Khanam, Huma Tauseef, Saima Farhan and Muhammad Abuzar Fahiem

Department of Computer Science, Lahore College for Women University, Lahore, Pakistan

Abstract– Software cost estimation of a project is an essential key to acceptance or rejection of any software project. Various software cost estimation techniques have been in practice with their own advantages and limitations. Accurate cost estimation helps us complete the project within time and budget. For this work we have knowledge of all available techniques methods and tools. This research work provides comparison of various software cost estimation methods and models that are frequently used for the SCE projects. Currently object-oriented approach for software cost estimation is based on classes function point method and Line of Code etc. Comparatively less attention has been paid to the software cost estimation in component-based software engineering. The main aim of this research is to provide a model for cost estimation in component based software in object oriented environment and comparative analysis of various techniques and tools.

Keywords— Software Cost Estimation, Object Oriented Environment and Cost Estimation Model

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