Christian Bolu | Covenant University Canaanland, Ota. (original) (raw)

Papers by Christian Bolu

The last two decades has seen the adoption of information and communication technology (ICT) in c... more The last two decades has seen the adoption of information and communication technology (ICT) in contemporary church communications for growth. Contemporary church communications for growth is taking phenomenally great strides. However, adoption levels vary across countries, church groups, church budgets, and with the increasing threat to mass gathering by insurgencies, the rate of adoption will further increase. This paper examines the adoption of ICT in contemporary church communication for growth in Nigeria. It analyzes the perception of church leaders on internet usage for church growth programmes, adoption of electronic mails, telephone and virtual learning environment for communication as well as the deployment of church ICT infrastructure for church administration and human capital management. With the increasing internet bandwidth intensity and teledensity in Nigeria, the paper attempts to identify potential structural shift in church growth and communication strategy

For network access, it is always desired that a fibre optic network connectivity be the major are... more For network access, it is always desired that a fibre optic network connectivity be the major area of cost minimization, while keeping quality of service as high as possible. This is because overall cost of setting up a fibre optic cable route is usually very high in relation to other components of the network. In this study, three buildings clusters were mapped to the University Network Operating Center, and the network was developed as a fail-safe network, so that in the case of damage to a cable or connecting component, users are not cut out. The problem was formulated as a Mathematical Programming problem and solved the resulting transportation problem using MATLAB linear programming solution. Results from the mathematical model shows an optimized cost for which a fibre Optic network connectivity can be further developed.

More and more scholars are turning to the Internet to find scientific information and academic in... more More and more scholars are turning to the Internet to find scientific information and academic institutions are devoting more and more resources to improving their presence on the web. E-learning programs and open access initiatives allow knowledge of these institutions to spread beyond physical boundaries. The Web can hence be used as a way to attract students, scholars and funding from other places, spreading the prestige of these educational institutions all over the world. This has provoked competition between universities to achieve an advantageous visibility on the Web and to improve their position in search engine results. This paper examines ongoing e-learning effort globally to enhance access to knowledge. In particular the role of University of Nigeria is playing in the promotion of access to knowledge is discussed. In line with their Information and Communication Technology Programme, the University has created an Internet repository of over 20,000 documents such as theses, journals articles and academic publications as well as a vibrant e-learning portal.

Business processes especially in the Central Banks are more fully integrated and streamlined than... more Business processes especially in the Central Banks are more fully integrated and streamlined than ever before. Also, realistic system landscapes often consist of many systems. Disconnected silos of unstructured information continue to pile up for each organizational function and different interfaces are often implemented using the technology that is considered to be ideal for the respective interface. There appears to be lack of Enterprise Content Management strategy thus leading to significant business challenges such as untrustworthy business information due to inaccurate, outdated, conflicting information, longer financial cycles and generally inefficient processes, system performance degradations and poor data organization, inconsistent, confusing user interface as well as frequent context switching. There is therefore the need for an effective enterprise content management strategy. Web content management systems are often used for storing, controlling, versioning, and publishing industry-specific documentations. Usability testing of web sites is an essential element of quality assurance and a true test of how people actually use Central Banks' web site. It is a test of whether outsiders can successfully use the Banks' Web site. Although formal usability tests are expensive, time-consuming and often prohibitive, periodic user testing is an important element in developing and maintaining a reader-friendly Website. Usability should emphasise clarity of communication, accessibility, consistency, navigation design, maintenance and good visual presentation. A solution to corporate intranet/internet chaos are Enterprise Portals. An enterprise portal is the gateway to the end user. It offers a central point of access to information, applications and services in an enterprise. It is a one-stop shopping for knowledge workers; the portal is both a gateway to and a destination on the enterprise network that provides transparent, tailored access to distributed digital resource. An Enterprise Portal provides numerous benefits to users, allowing them to interact with relevant information and application, both internal and external to the company, collaborate with others both inside and outside the Central Banks through self-service publishing customise-and-tailor a Web page with information that is easily found. This paper discusses the issue of Usability Tests and Web Content Management that enhance user productivity. Drawing from some award winning intranets some areas for best practices for the financial services such as the African Central Banks are high-lightened vis-à-vis the infrastructural problems facing the African Continent.

Enhancement of engineering materials is essential for averting service failure and corrosion atta... more Enhancement of engineering materials is essential for averting service failure and corrosion attack in the industries. The impact of Ni as inoculant and solidification process on the corrosion resistance of an Al-Mg-Si alloy has been investigated in 3.65% NaCl solution using potentiodynamic polarization measurement. The alloying compositions and phase change were determined with energy dispersive spectroscopy (EDX) and x-ray diffraction (XRD). The surface morphology of the alloyed sample using scanning electron microscope (SEM) showed that Ni particles were well dispatched along the interface. The addition of Ni to Al-Mg-Si alloy led to the precipitation and crystallization of Al 2 Ni and AlNi 2 formed at the grain boundaries. Equally, as the percentage of Ni content increases in the alloy, the corrosion rate decreased due to the presence of Al 2 Ni 3 which proceeded at active regions. Inoculation of Ni particles coupled with increase in solidification reduces the possibility of corrosion penetration within the structural interface.

The digital age has redefined the production process and utilisation of documents globally. In th... more The digital age has redefined the production process and utilisation of documents globally. In the information age, the process of input, delivery, storage, receipt, and categorization of data is critical. The public sector has to rely more and more on automated, reliable solutions in order to keep their information safe and readily accessible for effective governance. A document management system is a computer system used to track and store electronic documents and/or images of paper documents. The term has some overlap with the concepts of content management systems often viewed as a component of enterprise content management systems and related to digital asset management, document imaging, workflow systems and records management systems. This paper examines an ongoing document management implementation case study in a public sector of digital assets of over twelve million pages, highlighting the taxonomy, content and knowledge management creation using an enterprise content management system and discusses the role in national development and growth. Track 1 Optimization Theory and Application Track 2 Project and Engineering Management

Modeling and simulation of engineering production systems is one of the major concerns of product... more Modeling and simulation of engineering production systems is one of the major concerns of productivity engineers for the establishment of productivity standards in virtually all functional areas of an organization. There are several activities in a metal fabrication system, such as an aluminium rolling mills, but the maintenance function is a major area, if optimised, can ensure its profitability. The maintenance functions have several parameters to monitor and measure and there is the need for an integrated approach to optimize the basket of parameters measured. This paper is a study of the maintenance fabrication system with a view at identifying suitable approaches in integrated and systematic maintenance productivity measurement and creating models for optimising total productivity. Discussing several approaches of maintenance productivity measurement it shows how understanding the impact of plant failure and repair/service distributions assists in enhancing maintenance productivity using discrete event system simulation.

Aluminium matrix composites (AMCs) are a range of advanced engineering materials that can be used... more Aluminium matrix composites (AMCs) are a range of advanced engineering materials that can be used for a wide range of applications within the aerospace, automotive, biotechnology, electronic and sporting goods industries. AMCs consist of a non-metallic reinforcement (SiC, B 4 C, Si 3 N 4 , AlN, TiC, TiB 2, TiO 2) incorporated into Aluminium matrix which provides advantageous properties over base metal (Al) alloys. These include improved abrasion resistance, creep resistance, dimensional stability, exceptionally good stiffness-to-weight and strength-to-weight ratios and better high temperature performance. Fabrication of these advanced engineering materials through liquid state and solid state routes are considered in this paper.

This paper studies the influence of the grit size of silicon carbide particles on the mechanical ... more This paper studies the influence of the grit size of silicon carbide particles on the mechanical and electrical properties of stir cast aluminum matrix composites. A two step-mixing method of stir casting technique at (500 rpm) has been adopted. Type 1170 Al with (99.66 % C.P) and silicon carbide (SiC) particulates of 240 grit size (45 μm), 320 grit size (29 μm), 600 grit size (9 μm) and 1200 grit size (3 μm) were used. The incorporation of weight fraction of SiC ranges from 2.5 %, 5 %, 7.5 % and 10 %. The microstructures of the produced composites were examined using a scanning electron microscope. Mechanical properties were determined by using a universal testing machine of 30 KN load. Microhardness was performed on the composite specimens by using a LECO 700 HT tester with a load of 492.3 N and with a dwell time of 10 seconds. The electrical properties were determined using a Keithley instrument Model 2400 point probe machine. The results show that the modulus, yield strength and hardness of the composite increase at lower grit sizes of silicon carbide of 3 micron. The maximum hardness of 26.1 HVN and maximum modulus elasticity of 1517.6 N/mm −2 was obtained O. S. I. Fayomi at 7.5 % weight fraction of SiC. A boost in the mechanical and electrical properties of the produced alloys was gained by changing the grit size of the silicon carbide.

Humanoid robots have evolved over the years and today it is in many different areas of applicatio... more Humanoid robots have evolved over the years and today it is in many different areas of applications, from homecare to social care and healthcare robotics. This paper deals with a brief overview of the current and potential applications of humanoid robotics in healthcare settings. We present a comprehensive contextualization of humanoid robots in healthcare by identifying and characterizing active research activities on humanoid robot that can work interactively and effectively with humans so as to fill some identified gaps in current healthcare deficiency.

Modeling and simulation of engineering production systems is one of the major concerns of product... more Modeling and simulation of engineering production systems is one of the major concerns of productivity engineers for the establishment of productivity standards in virtually all functional areas of an organization. There are several activities in a metal fabrication system, such as aluminium rolling mills, but the maintenance function is a major area, if optimised, can ensure its profitability. The maintenance functions have several parameters to monitor and measure and there is the need for an integrated approach to optimize the basket of parameters measured. This paper is a study of the maintenance fabrication system with a view at identifying suitable approaches in integrated and systematic maintenance productivity measurement and creating models for optimising total productivity. Discussing several approaches of maintenance productivity measurement it shows how understanding the impact of plant failure and repair/service distributions assists in enhancing maintenance productivity using discrete event system simulation.

Artificial Neural network is a field of man-made intelligence that is able to undertake design pr... more Artificial Neural network is a field of man-made intelligence that is able to undertake design prediction, mechanical property forecast, and process selection. In this paper, Aluminium Silicon Carbide composite was developed by reinforcing aluminium metal with silicon carbide powder using stir casting method. The produced aluminium matrix composites (AMC)were subjected to tensile, hardness and electrical tests to obtain tensile extension (mm), load (N), modulus (N/mm^2), yield strength (MPa), hardness (HV), ultimate tensile strength (MPa), tenacity at fracture (gf/tex), time at fracture (s), hardness (HV), conductivity(MΩ/m), and tensile stress (MPa) data. Artificial Neural Network (ANN) was then used to train, test, and validate the obtained experimental data and then predict new set of data. The experimental and ANN predicted data were represented using graphical illustrations. The results showed that ANN could be used to replace rigorous, costly and time consuming experimental exercise with minimal loss in accuracy.

Counting of people and collecting good data is a major problem in every organization. Counting of... more Counting of people and collecting good data is a major problem in every organization. Counting of people may be manual or automatic. In order to create an efficient counting system, this study focused on automatic counting system to sense, count and collect data using image sensing device technology. The image sensing device was able to sense, and count people. Also, adaptive algorithm was developed to ensure accurate counting for both indoor and outdoor counting. Background Subtraction is also considered for varying shadows and lighting conditions. This was done using MATLAB. Finally the method of image processing, gives good result of quick sensing, and rapid counting.

This paper developed an application for a foundry enterprise to reduce the delay in fixing identi... more This paper developed an application for a foundry enterprise to reduce the delay in fixing identified air leaks and decrease energy consumption in the compressed-air systems. In many instances, air leaks were detected, but the response towards correcting them is usually less expeditious by the various departments responsible. Perhaps, there is a lack of awareness about the opportunities to conserve energy either through prompt repairs of air leaks or by regulating the pressure setting to match demand per time. An energy analysis application was developed using Matlab®. It facilitated increased response to repairs of air leaks and improved supply-demand management of output pressures from compressed-air systems.

The Federal Government of Nigeria has taken different precautions to support domestic vehicle ass... more The Federal Government of Nigeria has taken different precautions to support domestic vehicle assembly industries as part of the Nigeria Industrial Revolution Plan (NIRP) to diversify the economy from oil and gas sector to other sectors. The potentials of foundry industries in Africa and most especially in West-Africa Sub-region are under-utilized unlike in the developed countries. Most of the Foundries in Nigeria are operated by Small Scale Industries (SMI) and are not being able to contribute significantly to the automotive industries in the country. This paper is aimed to review several works done by different researchers in the automotive and foundry industries with the view to study the contribution of foundries in the development of automotive industries in Nigeria.

There has always been the issue of knowing the number of people present in a place such as sympos... more There has always been the issue of knowing the number of people present in a place such as symposiums, workshops, religious centres. Manual methods have often been employed. During the use of manual methods, the ushers are required are to stand along the pathways, this can then result to congestion in the pathway or even cause the speaker to lose focus. This paper focuses on to solving the problem of overcrowding and at the same time counting of people available in a place per time. In the paper, image sensing camera were used, the sensing device coupled with the camera were used to capture the image of people in a learning environment. MATLAB/SIMULINK software were used for the experiment. The result showed that the method is 85.4 % accurate with the ground-truth of 254 and TP of 217.

This paper presents the role of Higher Education Institutions (HEI) in the development of Informa... more This paper presents the role of Higher Education Institutions (HEI) in the development of Information and Communication Technology related professionals in Nigeria. The paper identifies the prerequisites to producing graduates who have skills to create, manage and deploy contemporary world-class and innovative software solutions. Furthermore the paper presents the gradual but revolutionary steps the universities in Nigeria are taking towards producing high quality graduates for the Nigerian Software Industry in the shortest time. The paper discusses the need for definition of ICT related discipline, the demand and supply of ICT professionals in the Nigerian market. Highlighting the demand-supply imbalance the paper concludes by proffering solutions to meet the gap in the nearest possible time.

In Nigeria today, Aluminium is beginning to find application not only for ki11:hen utensils but i... more In Nigeria today, Aluminium is beginning to find application not only for ki11:hen utensils but in construction, transportation and packaging. At this time when the plans for establishing a smelter capacity is being made, there is a need for an in depth ' study, despite the poor da1B, to determine the aluminium demand forecast which is inwluable for any practical capacity planning for such a very capi-1111 intensive industry. Various method used for medium and long. term forecasts in the ferrous and non-fwrous industry were exam~ ned as well as determining the main factors which influence alum~ mium consumption. Based on this a methodology was developed and used in making aluminium demand forecast for Nigeria for the year 1982 to 2.000. Direction for further work was also made.

The paper examined the ubiquitous nature of digital institutional repositories and their concomit... more The paper examined the ubiquitous nature of digital institutional repositories and their concomitant capabilities. It specifically show-cased the robust process and technical details involved in the development and sustenance of Covenant University Institutional Repository which has consistently ranked number one repository in Nigeria based on webometric rankings. Relying on Strajda Process Management model, Covenant University adopted two open source software-Dspace and E-print based on adjudged robustness of the metadata, relative easy to setup as well as amenable to customization. The paper recommended among others, the sensitization of researchers on the dangers of ceding copyright to Journal publishers as the practice divests them of inherent rights and may preclude deposition of their works on the Institutional repository thereby undermining growth of content and visibility of research outputs. It further recommended backup systems that forestall intrusion and mitigate effect of potential disasters on sustainability of Institutional Repository.

Modeling and simulation of engineering production systems is one of the major concerns of product... more Modeling and simulation of engineering production systems is one of the major concerns of productivity engineers for the establishment of productivity standards in virtually all functional areas of an organization. There are several activities in a metal fabrication system, such as aluminium rolling mills, but the maintenance function is a major area, if optimised, can ensure its profitability. The maintenance functions have several parameters to monitor and measure and there is the need for an integrated approach to optimize the basket of parameters measured. This paper is a study of the maintenance fabrication system with a view at identifying suitable approaches in integrated and systematic maintenance productivity measurement and creating models for optimising total productivity. Discussing several approaches of maintenance productivity measurement it shows how understanding the impact of plant failure and repair/service distributions assists in enhancing maintenance productivity using discrete event system simulation.