DSpace Collection: Journal Articles
http://repository.fuoye.edu.ng:80/handle/123456789/68
Journal Articles2024-03-28T12:19:19ZDesign and Construction of A Temperature Monitoring And Alarm System
http://repository.fuoye.edu.ng:80/handle/123456789/1885
Title: Design and Construction of A Temperature Monitoring And Alarm System
Authors: Ojo, Bukunmi Emmanuel
Abstract: The Temperature monitoring system is designed with the microcontroller and is quite useful for conference halls, auditoriums, cinema halls, medical facilities and other commercial organizations where many people gather together and a lot of fans and air conditioning systems are required at these places to maintain the required temperature.2019-02-01T00:00:00ZA CONCISE APPROACH TO ELECTROMAGNETIC FIELDS AND WAVES
http://repository.fuoye.edu.ng:80/handle/123456789/1140
Title: A CONCISE APPROACH TO ELECTROMAGNETIC FIELDS AND WAVES
Authors: IJEMARU, GERALD KELECHI; OLAITAN, AKINSANMI
Abstract: As the name implies, “A Concise Approach to Electromagnetic Fields and Waves” is an outgrowth of the lecture notes prepared for Electromagnetic Fields and Waves I & II. Intended primarily as a text book for students at the advanced undergraduate or beginning graduate level, it is expected that the book will be useful for research workers too. It provides a thorough treatment of the theory of electrodynamics, mainly from a classical field theoretical point of view, and includes such things as electrostatics, electromagnetic waves and their propagation in vacuum and in media.
With the parameters and terms that made up the text clearly defined, this book is based on classical electromagnetism that deals with the study of static charges and their electric fields, the magnetic field developed by motional charges and the electromagnetic wave that treated the dynamism of electron in rapidly time-varying condition.
The book – “A Concise Approach to Electromagnetic Fields and Waves” consists of eight chapters. Chapter one is an introduction to electromagnetic fields and waves. This chapter x-rays the basic concepts about electromagnetics, the discovery of electromagnetic field, Maxwell’s equations, electromagnetic spectrum and the fundamental characteristics of EM waves. Chapter two looks into a review of vector analysis, which includes vector algebra and vector calculus, while chapter three presents Electrostatics and its applications as well as charge distribution in a conductor, Coulomb’s law, electric field intensity, and electric potential. In chapter four, there is a review of EM laws in the integral form, which houses Gauss’s law, Ampere’s law, Faraday’s law, magnetic field in and around a current-carrying conductor, conduction and displacement current density, derivation of Maxwell’s equation from Ampere’s law, Faraday’s law and Gauss’s law. Wave equation derived from Maxwell’s equation is presented in chapter five, while chapter six looks into divergence and stoke’s theorems. This chapter comprises time harmonic waves, poynting vector (s), media of plane waves, wavelength of wave in free space, wave propagation in free space and in perfect dielectric, etc. Transmission line is presented in chapter seven and lastly, chapter eight contains miscellaneous problems and their solutions.
This book tries to build a good background for the targeted students and set them to the context of electromagnetism without over assumption. To this end, a student of electromagnetism, studying for the basic principles of and building blocks for communication and power system engineering, will find this text an invaluable material and relief for hitherto dreaded but all important course in Electrical and Electronics Engineering.
Description: This book – “A Concise Approach to Electromagnetic Fields and Waves” covers the required breadth of the subject matter as prescribed by NUC curriculum for engineering students of Universities and Polytechnics. The area on fields particularly opens the study into field theories needed in engineering for proper understanding of basic electrical engineering ideas.
An in-depth background of Electromagnetics as applied to wave theory and practice has been laid. The book is recommended to students not only in electrical and communication engineering but also in physical science.2015-02-01T00:00:00ZReliability Assessment of Uninterruptible Power Supply (UPS) System for Medical Operations in Zaria Kaduna State
http://repository.fuoye.edu.ng:80/handle/123456789/1139
Title: Reliability Assessment of Uninterruptible Power Supply (UPS) System for Medical Operations in Zaria Kaduna State
Authors: IJEMARU, GERALD KELECHI; OLAITAN, AKINSANMI; BABARINDE, ADEDAYO KAYODE
Abstract: The paper presents the reliability assessment of Uninterruptible Power Supply (UPS) systems for medical operations in Zaria. The part stress method was used to assess the reliability. Data on the failure of an APC BK650MI UPS model were used as a case study. Special consideration was given to factors like environment, quality of utility and service personnel, and the results showed that there is a relatively low reliability of the system, for medical operations in Zaria than the country for which the system was designed (USA).2015-11-25T00:00:00ZDesign and Construction of an Automatic Triggered Bell Ringer Circuit
http://repository.fuoye.edu.ng:80/handle/123456789/1138
Title: Design and Construction of an Automatic Triggered Bell Ringer Circuit
Authors: IJEMARU, GERALD KELECHI; ADAMU, MURTALA ZUNGERU; YADUMA, SANDRA; BABARINDE, ADEDAYO KAYODE; OLUSUYI, KEHINDE OLUWAFEMI
Abstract: This research work deals with the design and construction of an automatic triggered bell ringer circuit. Several previous attempts have been developed on intruder alert and a motion detection system, complex systems that operate excellently well. The automatic triggered bell ringer circuit integrates knowledge of these previous models and utilizes more readily available components. It also introduces the use of two sensors, thereby increasing its sensitivity. Major components used in the work are the Force and Light sensors, sensors that depict the concepts of pressure and light resistivity/conductivity respectively, and a laser beam directly projected permanently on the light sensor’s surface. A force exerted on the Force sensor triggers a buzzer alarm and likewise, an obstruction in the path of the laser triggers the buzzer alarm. Once there is pressure exerted on the Force sensor, the resistance tends to infinity and voltage dropped across it biases the diode and transistor and the voltage reaching the buzzer triggers it. Likewise, the resistance of the light sensor tends to infinity when in darkness and the voltage dropped across it also biases a diode and transistor and triggers on the buzzer alarm. The work has been tested and seen to have a higher sensitivity, and is much cheaper than its counterparts.2014-01-01T00:00:00ZInter-Cell Interference Mitigation Techniques in a Heterogeneous LTE-Advanced Access Network
http://repository.fuoye.edu.ng:80/handle/123456789/1137
Title: Inter-Cell Interference Mitigation Techniques in a Heterogeneous LTE-Advanced Access Network
Authors: IJEMARU, GERALD KELECHI; OLEKA, EMMANUEL UCHENDU; NGHARAMIKE, ERICMOORE TOCHUKWU; NJOKUOCHA, KENNETH IKECHUKWU; UDUNWA, AUGUSTINE IKENNA
Abstract: As LTE (Long Term Evolution) networks proliferate and network traffic increases, LTE operators face the problem of interference. Because LTE spectrum is limited, most operators deploy single frequency networks to maximize capacity. However, while single frequency networks increase spectral efficiency, they also increase the potential for interference. Interference is highly unpredictable and depends on various factors such as channel conditions, traffic from other terminal and noise. Interference occurs between various equipment in a heterogeneous LTE-A access network and is a threat to the technology of wireless network. Hence, this research work seeks to analyze the various techniques for combating interference in LTE–Advanced access network per unit area using different combination of methods. Network-based interference mitigation solutions are not yet available to address the interference problems of today’s LTE networks. However, Terminal-based interference solutions are available today as they offer operators a powerful weapon to combat interference. The introduction of Femtocell to users has also made interference mitigation scheme achievable. The Femtocell interference mitigation technique mitigates the interference between network components such as Macro-cell and Femtocell in a heterogeneous LTE-A access network. The work also emphasizes the importance of heterogeneous network in a wireless communication and the basic sources of interference and their mitigation techniques in this kind of network. The implementation of all the suggested mitigation techniques and power control formula as explained in this work has been proposed to target the performance of heterogeneous LTE-Advanced access network. This, as a result, will improve the signal quality of the received signal, and end users will experience higher throughput and better service continuity, and LTE operators will improve coverage and increase the capacity of their networks.2014-11-01T00:00:00ZReliability Evaluation of Ayede 330KV/132KV Substation
http://repository.fuoye.edu.ng:80/handle/123456789/1053
Title: Reliability Evaluation of Ayede 330KV/132KV Substation
Authors: Adefarati, Temitope; Babarinde, Adedayo; Oluwole, Ayodele; Olusuyi, Kehinde
Abstract: Reliability is an analytical tool used to measure the ability of a power system to perform a function when required for a specified period of time in particular environment and conditions. Reliability analysis is a vital tool for critical identification of sensitive components of the electrical power systems that need more attention for better improvement and at the same time to increase the system availability. The aim of this research work is to carry out reliability assessment of electrical power system by using some reliability indicators. Hence this work presents a research on reliability assessment of 330/132KV substation by using Ayede 330/132KV substation as a case study. Ayede 330/132KV substation feeds six different 132/33KV substations, such as Jericho, Ijebu ode, Ibadan North, Sagamu, Ayede and Iseyin. In this study different parameters that determined optimum operation of a power system such as SAIDI, CAIDI, SAIFI, CAIFI, CIII, MAIFI and ASAI were deduced.2014-10-17T00:00:00ZThe Dynamic Modelling and Electrical Profiles of Three-Phase Induction Motor Usunig MATLAB Program
http://repository.fuoye.edu.ng:80/handle/123456789/1052
Title: The Dynamic Modelling and Electrical Profiles of Three-Phase Induction Motor Usunig MATLAB Program
Authors: Oluwasogo, Emmanuel; Osunde, Davidson; Babarinde, Adedayo; Okakwu, Ignatius
Abstract: This paper addresses the dynamic behaviour of 3-φ induction machines based on a quality mathematical model
and computer program simulation in a stationary reference frame to avoid the complexity involved in the course
of solving time-varying differential equations obtained from the dynamic model. Laplace transform of the
dynamic equations was carried out to derive analytical solutions the current variables. 4th 0rder Runge-Kutta
method is adopted to give numerical solution of the dynamic model. The basic electrical characteristics of the 3-
φ induction machine are considered in the two-phase approximate equivalent model. The graphical curves were
obtained from MATLAB program code developed.2015-01-31T00:00:00ZCOMPARATIVE ANALYSIS OF COMMUNICATION AND INTERNET TRANSMISSION MEDIA
http://repository.fuoye.edu.ng:80/handle/123456789/1046
Title: COMPARATIVE ANALYSIS OF COMMUNICATION AND INTERNET TRANSMISSION MEDIA
Authors: Ofusori, Temidayo J.; Ukagu, Stephen N; Guiawa, Mathurine; Ezomo, Patrick I
Abstract: This work takes a view on three different communication and internet transmission media commonly used in telecommunication. The structure and working principle is reviewed alongside the recent developments in cabling standards and applications. Comparison is made based on the properties of the individual medium, signal impairments and other factors that affect transmission media in a network. It also demonstrates how problems due to signal impairments can be mitigated and how various media can be optimized in a network.2014-07-01T00:00:00ZMOBILE BROADBAND SPEED AND DATA VOLUME ANALYSIS
http://repository.fuoye.edu.ng:80/handle/123456789/1043
Title: MOBILE BROADBAND SPEED AND DATA VOLUME ANALYSIS
Authors: Ofusori, Temidayo J.; Ukagu, Stephen N.; Ezomo, Patrick I.; Guiawa, Mathurine
Abstract: This work carries out mobile broadband speed and data volume analysis of three GSM service providers (MTN, GLO and AIRTEL) in Okada, Edo State of Nigeria. The download and upload speeds as well as the data volume were investigated under certain conditions. The modems for the three different GSM Networks were made available while a software (NETWORX) was used to monitor the traffic. The data and graphical representation of each of the service provider’s speed and data volume was presented over a period of time. A critical analysis of the data and graphs showed that MTN network provides better service irrespective of the condition followed by GLOBACOM and AIRTEL networks in Okada town.2014-05-01T00:00:00ZEffects of Electrical Variation on the Dynamic Behaviour of Two-Phase Induction Motor
http://repository.fuoye.edu.ng:80/handle/123456789/1040
Title: Effects of Electrical Variation on the Dynamic Behaviour of Two-Phase Induction Motor
Authors: Babarinde, Adedayo; Adefarati, Temitope; Oluwole, Ayodele; Olusuyi, Kehinde
Abstract: This research work seeks to analyse the performance of a two-phase induction motor using dynamic model based on MATLAB. The 4th order Runge-Kutta was used for the solution of this dynamic model. The modelling and simulation will be strictly for Two-phase induction motors used in low power applications. Measured and simulated results would be discussed and correct mitigation techniques would also be recommended .Future work within the scope of this research work would also be discussed. With the growing concerns about low-cost operation and efficient use of energy, Two-Phase induction motors have gained interest in low-power applications, especially for domestic or commercial applications where a three-phase power supply is not available. This result from this research work would help improve the design of two-phase induction motor used in the applications above.2014-06-30T00:00:00ZNeuro-Fuzzy Based Modeling of Electrostatic Fields for Harmattan Season in Zaria
http://repository.fuoye.edu.ng:80/handle/123456789/1034
Title: Neuro-Fuzzy Based Modeling of Electrostatic Fields for Harmattan Season in Zaria
Authors: Akinsanmi, Olaitan; Adegboye, B.A; Olarinoye, G.A; Soroyewun, M.B
Abstract: This paper presents a Neuro-Fuzzy based modeling of electrostatic fields for harmattan
season in Zaria, Nigeria based on online based data capturing mechanism, which involved the use
of a data acquisition system interfaced with a digital electrostatic field strength meter (model 257D)
and a computer system. The acquired electric field data were captured by the computer using the
Microsoft Office Excel Program for twenty-four months (February 2007 – February 2009). The
focus of the analysis is determining the effect of environmental factors such as temperature,
pressure and relative humidity on the static electric field during the harmattan season. The plots of
the electrostatic field against the variation of the environmental factors were used as the qualitative
analytical tools and yielded a non-linear relationship. The data was analyzed using Neuro-Fuzzy
technique, which is a hybrid intelligent system combining the benefits of computational techniques
of Fuzzy Logic and Artificial Neural Networks. The result of the analyses yielded good neural
statistical values of Root Mean Square (RMS) of 0.32, Average Absolute Error of 0.18, and Pearson
R value of 0.96 for the harmattan scenario, which are reflections of a good model. The result was
further buttressed by the 3D plot of the Neuro-Fuzzy based modeling of the experimental
parameters. With the insignificant values of the RMS and Average Absolute value, the empirical
model gave a fairly good prediction which could be relied upon to predict the electrostatic fields
during harmattan in Zaria, Nigeria.2011-01-01T00:00:00ZNeuro-Fuzzy Based Modeling of Electrostatic Fields for Non- Harmattan Season in Zaria
http://repository.fuoye.edu.ng:80/handle/123456789/1030
Title: Neuro-Fuzzy Based Modeling of Electrostatic Fields for Non- Harmattan Season in Zaria
Authors: Akinsanmi, Olaitan; Bajoga, B.G; Abdoulie, M.S.T; Abdullahi, S.Y
Abstract: This paper presents a Neuro-Fuzzy based modeling of electrostatic fields during non-harmattan season in
Zaria, Nigeria based on the on-line data capturing mechanism, which involved the use of a data acquisition
system interfaced with a digital electrostatic field strength meter (model 257D) and a computer system. The
acquired electric field data are captured by the computer using the Microsoft Office Excel Program for twenty-
four months (2007 - 2009). The focus of the analysis is determining the effect of environmental factors such as
temperature, pressure and relative humidity on the static electric field during the non-harmattan season. The
plots of the electrostatic field against the variation of the environmental factors were used as the qualitative
analytical tools and yielded a non-linear relationship. The data was analyzed using Neuro-Fuzzy technique,
which is a hybrid intelligent system combining the benefits of computational techniques of Fuzzy Logic and
Artificial Neural Networks. The result of the analyses yielded good neural statistical values of Root Mean
Square (RMS) of 0.35, Average Absolute Error of 0.23, and Pearson R value of 0.94 for the non-harmattan
scenario, which are reflections of a good model. The result was further buttressed by the 3D plot of the neuro-
Fuzzy based modeling of the experimental parameters. With the insignificant values of the RMS and Average
Absolute value, the empirical model gave a good prediction which could be relied upon to predict the
electrostatic fields during non-harmattan in Zaria, Nigeria.2011-01-01T00:00:00ZDesign of an Employee Management System (A Case Study of National iron Ore Mining Company, Itakpe)
http://repository.fuoye.edu.ng:80/handle/123456789/1027
Title: Design of an Employee Management System (A Case Study of National iron Ore Mining Company, Itakpe)
Authors: ADETOYE, ARIBISALA; KEHINDE, OLUSUYI
Abstract: Most of the contemporary Information systems are based on the Database technology as a collection of
logically related data, and Database Management System (DBMS) as a software system allowing the users to
define, create, maintain and control access to the database. The process of constructing such kind of systems is
not so simple. In this paper, A database management system was developed to manage the staff data of the
National Iron Ore Mining Company, Itakpe, Kogi State, Nigeria. The system developed is called Employee
Management System. It consists of functionally related GUI (Graphical User Interface) and a database. The
application programme is between the users and the database, where the data is stored for reliability,
flexibility and functionality. The programming tool includes Microsoft visual studio 2010 platform and C-
Sharp (C#) as the language. It involves a mutual development of application program and a database. The
software was tested and found effective for the company. It is recommended for large organizations and
establishments.2014-11-01T00:00:00ZA fault analysis of 11kv distribution system (a case study of ado Ekiti electrical power distribution district)
http://repository.fuoye.edu.ng:80/handle/123456789/1018
Title: A fault analysis of 11kv distribution system (a case study of ado Ekiti electrical power distribution district)
Authors: OLUSUYI, KEHINDE; OLUWOLE, SUNDAY OLUWOLE; Adefarati, Temitope; BABARINDE, ADEDAYO KAYODE
Abstract: The aim of this research work is to carry out fault analysis of 11KV distribution power system. Electric power
is an essential facilitator for sustainable development of the modern nation state. While Nigeria is reported to suffer from
severe shortages of electric power the condition of some of its newer constitutional units are unknown. In this work, electric
power infrastructure and energy availability is studied for Ado-Ekiti, the principal economic and political hub of Ekiti State.
During the study, the condition of all relevant equipment for power distribution at the 11 kV level was assessed. Power
availability was also considered by collecting necessary data that had to do with energy supplied, faults and other outages. It
was discovered that the distribution lines were in a rather poor state with as many as 25% of the poles not meeting a condition
of "goodness", 33% of cross-arms being broken or unsatisfactory, about 10% of the insulators defective and almost 40% of
the span not complying with standards. Hence this work presents a research on fault analysis of Ado Ekiti distribution
power system.2014-04-10T00:00:00Z