Siloko, I. U. and Ishiekwene, C. C. (2014). Bias Reduction in Multivariate Kernel Density Estimation via Higher-Order Kernel. The Journal of the Nigerian Institution of Production Engineers, Volume 16, pp 13–23.

Abstract

The rules for choosing smoothing parameter are generally based on the relatively simple but important ideas of balancing bias and variance globally. We focused on how to reduce the bias term by using the generalised higher-order kernel in multivariate kernel density estimation particularly the order four . A…
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Siloko, I. U. and Ishiekwene, C. C. (2014). A Brief Review of Kernel Density Estimation with Applications to Data Analysis. Journal of the Nigerian Association of Mathematical Physics, Volume 28 (2), pp 195–206.

Abstract

Kernel density estimation is an important smoothing technique with direct applications such as data exploratory analysis and data visualisation. This review summarizes the most important theoretical aspects of kernel density estimation and provides a description of classical methods for computing the smoothing parameter. The performance of…
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Siloko, I. U. and Ishiekwene, C. C. (2014). A Brief Review of Kernel Density Estimation with Applications to Data Analysis. Journal of the Nigerian Association of Mathematical Physics, Volume 28 (2), pp 195–206.

Abstract

Kernel density estimation is an important smoothing technique with direct applications such as data exploratory analysis and data visualisation. This review summarizes the most important theoretical aspects of kernel density estimation and provides a description of classical methods for computing the smoothing parameter. The performance of…
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Siloko, I. U. and Ishiekwene, C. C. (2016). Boosting and Bagging in Kernel Density Estimation. The Nigerian Journal of Science and Environment. Volume 14(1), pp 32–37.

Abstract

Boosting is a bias reduction technique while bagging is a variance reduction method. These two methods aim at reducing the asymptotic mean integrated square error (AMISE). In this paper, our aim is to show that bagging is a boosting algorithm in kernel density estimation since both techniques use large smoothing parameter(s). This relationship…
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Ejakpovi, S. U., Siloko, I. U. and Ishiekwene, C. C. (2016). Performance of Some Higher Order Beta Polynomial Family Kernels. Journal of the Nigerian Association of Mathematical Physics. Volume 36, pp 189–192.

Abstract

This article introduces two new higher-order kernels of the beta polynomial family when. The most commonly used measure of discrepancy which is the mean integrated squared error (MISE) that shows how close an estimated density is to the targeted true density was considered for both kernels. We…
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Siloko, I. U., Ishiekwene, C. C. and Oyegue, F. O. (2017). The Effect of Smoothing Parameter in Kernels Aggregation. Canadian Journal of Pure and Applied Sciences, Volume 11 (2), pp 4255–4262.

Available online at www.cjpas.net

Abstract

Kernel density estimation depends on appropriate smoothing parameter selection in its implementation since the method is mainly for data exploration and visualization purposes. While considering the effect of the smoothing parameter, the form of aggregation employed will determine the size of the smoothing parameter…
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Abstract

The purpose of this paper is to suggest ways by which law enforcement and intelligence agencies can analyze large volume of data using data mining as one of the ways of getting active solutions for crime investigation in Nigeria. The problem is, the general public are extremely concerned on how the activities of the terrorist in Nigeria can be reduced if it cannot be completely eliminated. The results of this paper can be significantly useful to the National Security…
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ABSTARCT
Marriage  instability is  one  of  the  demographic  features  presides  over human  population  dynamics.  The  age-specific marriage  instability pattern  has  a discrete shape  for  all  human population,  to illustrate which,  a  number  of  parametric  models have  been recommended by  several  authors.  The  purpose  of  this  study  is  to build  up a  mathematical  model  for  fitting  marriage  instability rate  pattern  of  various geopolitical  zones  of  Nigeria.  Skew-logistic  probability density function is used for developing the model. The real data, to which…
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The physicochemical properties and trace metal compositions of soil around selected pharmaceutical industries in Kaduna metropolis were investigated in this study. The mean pH, EC and TOM were 6.97, 341.3?S/cm and 3.11 respectively. Particle size analysis revealed a higher composition of sand fraction (78.7%). The concentration of the metals were in order Fe (1664.9 ?g/g), Zn (155.17 ?g/g), Mn (108.07 ?g/g), Cr (34.62 ?g/g), Pb (28.12 ?g/g), Cu (12.21 ?g/g) and Cd (0.04 ?g/g). There was a significant…
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KEY WORDS: Proximate, Mineral, Amino acid, Almond and Mesocarp

The phytochemical and mineral compositions of selected vegetables in Minna metropolis were investigated using standard procedures. The results of the analysis showed that the concentrations of the secondary metabolites were as follows: alkaloids (4.00±2.00 to 9.33±4.16mg/100g), flavonoids (40.00±20.00 to 73.33±11.55 mg/100g), tannins (14.67±4.16 to 33.33±1.53 mg/100g), saponins (4.67±3.06 to 8.00±2.00 mg/100g), Phytates (7.56±4.36 to 68.83±17.47 mg/100g) and oxalate (19.65±0.08 to 34.39±0.28 mg/100g). B. oleracea had the highest amount of alkaloids (9.33±4.16mg/100g) while L.sativa had the least (4.00±2.0). All…
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This is a research on DSML (domain specific modelling language) for Engineering Designs with particular interest in the
domain of Pipeline Design. It is a language metamodel whereby all the syntax in the language are embodied by a domain model that
conforms to it. The attributes of the domain model which is actually a pipeline graphics model from a real life example, is captured
as vocabulary of components into the language formalism for processing. In this paper, the authors report…
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Domain specific modeling methodology employed in this solution provides abstractions in the problem domain
that expresses designs in terms of concepts in the application domain. Presented in this paper therefore is a metamodelling
tool, an integrated platform which offers layered collections of reusable software primitives whose semantics are familiar
only to engineering design mechanisms. It is intended to eliminate the complexities associated with the domain of computing
technologies such as CAD systems where the focus is solely on engineering designs…
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The intent of this paper is to define a common case study for the domain-specific modeling research community.
The domain of the case study is oil and gas pipeline design management systems, i.e., systems that help in identifying,
handling, and controlling a pipeline design task by coordinating the communication between all component models and
dimensions involved in handling the design, by allocating and managing resources, and by providing access to relevant designrelated
information to domain experts. This document contains general…
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Domain specific modeling services, especially when made available to pipeline systems that transport oil and gas,
constitute an interesting but very challenging domain. It poses fundamental problems for requirements engineering, software
architecture, and their relationship. We propose a novel, domain-based framework for requirements engineering for this class
of applications. The framework addresses the key concepts in this field, such as changing complexities for design platforms
and domain specific requirements. We report experimental lessons learned on this framework and suggest requirements READ MORE Download Staff Profile      

Information Retrieval (IR) has become a topic of great interest with the advent of text search engines on
the Internet. Information Retrieval (IR) is the area of study concerned with searching for documents, for information
within documents, and for metadata about documents in Internet. This paper proposed a hybridized approach using
KNN and VSM tools for retrieving information on the Web. The approach used standardized data to test this technique.
Using the recall values of 0.1, 0.2, …, 1.0, the…
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Usually collection of keys are manually driven, hence it’s time consuming. Staffs of organizations have to sign in and sign out for keys in order to accomplish the daily jobs. In the process much time is spent collecting keys for the specific offices. This is because they are expected to write their names, departments, date, time against these respected columns; before they will now sign across the key columns, in a Key Movement Book (KMB) that keeps
records keys collection.…
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Presented in this paper is a simplification platform for engineering design that redirects designers from the conventional form of vector geometry. Using programming features it will promote automatic interchange of parametric data used in the creation of graphic models and those used in the design analysis of the models in order to accomplish specific design tasks. The entire process of creating a final graphics model which is termed graphics design and which results in a graphics model will involve the…
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In this paper, we present the architecture and describe the functionality of a Web-based tutorial model, which uses component codes for dynamic representation. Components are a type of hybrid rules that generates graphical data from the server side for the client side. The use of components as the functionality representation basis of a web based tutor results in a number of advantages. Part of the functionality of the system is controlled by using clientside code and a range of special…
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The goal of learning in the midst of individuals and groups with mixed potentials is performance. It is evident that learning is most effective when it is done in an integrated platform. Learning analysts encourage this integration but don’t always offer practical strategies to make it happen. This paper attempts to begin to truly reduce the gap that slows down enterprise training and find ways to bring learning to an online community where interaction is never physical. The system works…
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In this study the ability of an e-commerce framework that deals with the purchase of goods online is presented. It makes use of the client and the server side architecture .The login and the registration are required to be completely filled and submitted by the users and are made available on the client side of the system while all other process that are database resides on the server side. The reason is to device a means of trade through an…
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ABSTRACT
In this paper, an inverter system of 1KVA Power is designed from transformation ratio equations and relay configuration and on to electronic components and devices that converts DC Supply from Battery to AC Supply suitable for household and office appliance to cater for instability in power supply. The AC supply given out has a relatively smooth Sine Wave required for normal operation of any appliance. The Inverter is designed to operate for a minimum of thirty (34) minutes, which…
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Leak detection is a very important step in the production and maintenance of oil and gas pipelines. It is needed to check tightness specifications and to ensure other installation specifications are fulfilled. In this paper some pipeline leak detection methodologies are studied to come up with a design structure that could ease pipeline leak detection and monitoring via Google earth. A common difficulty identified for most of these methods is the aspect of generating a leak alarm when the pipeline…
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Data modeling is an important part of database design. The data model focuses on what data should be stored in the database,
exploring the relation between data entities. The goal of the data model is to ensure that all data object required by the database
are accurately represented. This paper presents data abstraction technique to ensure data is modeled and represented accurately
using the entity relationship model. The ER modeling method provides a wide variety of possibilities in a database…
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An object-oriented database management system (OODBMS) is a database system which
supports an object-oriented data model. Just as any traditional database system, it must provide
disk management, data sharing, data integrity, security, and a query language. Further, in support
of an object-oriented data model, it must manage complex objects with object identity, support
objects that encapsulate data and behaviour, structure objects in classes, and organize classes in
a hierarchy. Having attracted reasonable maturity in the research community and the business READ MORE Download Staff Profile      

The development of correct program is a very important problem in computer science and software engineering. These days,
most software are full of errors even though they seem to work well after testing. When these software are put into use, some
errors which are formally passive becomes active and the result is the failure of such software. Therefore, there is need to develop
error-free software these days because software have become inevitable in every area of human endeavor especially software READ MORE Download Staff Profile      

Information security is of great concern these days due to the activities of hackers and malicious users on the Internet. Securing information has become a critical issue and is of growing concern as computer systems worldwide become increasingly vulnerable to the rapid increase in the volume of information being transmitted across networks and over the Internet. In this paper, we proposed a technique that provides a robust intrusion detection system against attackers. It puts scalability and appropriate security in mind.…
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Globally, public sector innovation has become a big issue as citizens demand for greater accountability, effectiveness and efficiency in service delivery, and the liberalisation of the governance system. Debate on e-government evolved in the last decade in parallel with a broader discussion on e-governance, where the concept and practice of e-governance further encompasses the e-government phenomenon. Because of the complexities of governance and e-governance, this chapter presents e-governance as a close, large integrated, open and sociotechnical (CLIOS) framework to meet…
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This paper presents software developed using the Visual Basic Integrated Development
Environment capable of transmitting voice over an internet protocol. It is being implemented
by running the software in two end computers connected over the internet. The Internet
Telephony software project is a platform - independent application; meaning that it can run
on different network environments, ranging from LAN, MAN, WAN, and the Internet. As long
as the ping.exe utility gives a ping response from the remote host ID, there…
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This paper presents a chat-system as a modern communication system taking advantage of
digital convergence that addresses the problems of delays, time and materials wastage, and
structures that characterize meetings, personal conversations, group conversation, and
advert placements in our society. Communication can be realized through any activity and
through specialized forms, such as audio conferencing. The specific task defined here is
modern communication enhanced and powered by digital convergence aimed at making
easier the communication of multiple users of a…
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Abstract: In domain specific modeling language development, model interactions and transformations play a crucial role. This paper introduces a new, syntax directed approach for the specification of modelinteractions for transformations within a domain specific modeling language. The technique is based on tokenization of the characteristic values and attributes of possible component elements of a fluid supply system. To demonstrate the mapping, expression parse trees and streams of tokens are recursively specified as syntax directed definitions in a context free grammar.…
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Computers have simplified our working life to be more efficient and productive, for
example, communication can be done through mail and instant messaging, presentation
can be shared through Netmeetings and meeting minutes can be stored in workspace or
shared drives. Computers, especially notebooks and laptops are very synonymous with
mobile lifestyles as it is very convenient. LAN and wireless facilities which allow users to
access borderless information at anywhere and at any time, turn the computer into a
necessity rather…
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This is a research progress where FODA (feature oriented domain analysis) is used to implement a formal analysis
framework that characterized commonality and variability of features for a transmission pipeline design modelling language. The
features representing the pipeline physical components were analysed along the line of the system logic being able to model
stakeholders design intents. It is demonstrated that FODA methodology for domain analysis fits the needs for the application of a
carefully studied semantics to the development of…
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Models are simply outcomes from levels of abstractions, so developing a modelling language is an effort in creating a
platform where the domain concepts can be mapped to the abstraction levels. Once this mapping is achieved, it will create a
stakeholder or domain expert user friendly notations from the concepts description. This will then enable the stakeholders the
freedom to express and achieve design intents and as well cope with the complexity of conventional design software. In this paper,
the…
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General purpose software design and development involves the repetition of many
processes, and the ability to automate these processes is often desired. To formalize a software
process, such as modelling pipeline systems that transport fluids, an existing general purpose
programming language (GPL) can be extended with its important aspects extracted as a model.
However, the complexities and boundaries the programming language places on the ability to
concisely and clearly describe the designing and modelling processes of the pipeline configurations
can…
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This paper presents an overview of the application of domain specific modeling (DSM) approach in Model-Driven Engineering
(MDE) technologies to describe a domain specific language (DSL) software development roadmap. An approach in which
models of transmission pipelines in the domain of pipeline engineering systems are created and systematically transformed to
actual implementations. The discussion centered on some of the major transformation paths that must be undertaken in order to
realize the impressions of the DSL development. Clearly, the full realizations…
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ABSTRACT
The proximate and mineral composition of water melon, bitter melon, pawpaw, guava
and cherry seeds were carried out; these sample seeds were obtained from discards
of plants and prepared for use by decocting, sun drying and grinding into powder.
Using petroleum ether; of boiling range 40-60oC, their fats were extracted, the
protein content, ash content, crude fibre, moisture, carbohydrate as well as the
mineral contents were determined using standard methods. The fats yield of
44.00±0.04, 34.00±0.00, 26.01±0.00, 19.01±0.02 and…
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Abstract: The present study investigates the physicochemical properties of selected brands of vegetable oils (groundnut,
soya bean oil, palm oil and palm kernel oil) sold in Minna, using standard procedure. The specific gravity of
the oil ranged from 0.93±0.30 to 0.96±0.20. There was a significant difference in the relative densities of the
oils studied. Natural palm oil has the highest relative density (1.42±0.26) while natural grand pure oil has the
least (1.36±0.13). The refractive index varied from 1.35±0.05 to 1.45±0.35.…
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The main aim of this study is to determine the levels of soil pollution with heavy metals in the
vicinity of a railway station in Minna, Niger state, Nigeria. In this study, 15 soil samples were
collected at a depth of 0-15 cm from the vicinity of Minna railway station, Niger State, Nigeria, and
analyzed at the chemistry department, Federal University of Technology Minna, Nigeria between
May 2009 and November, 2009. The soil samples were acid digested using a mixture…
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Traditional medicine practitioners TMPs have developed means of treating skin and soft tissue
infections by using plant extract. In this study, four medicinal plants which are used for treating skin
diseases were analysed, to determine their phytochemical constituents and antimicrobial activity.
Extraction and phytochemical screening was done using standard analytical procedures. The
antimicrobial assay was carried out using agar well diffusion method. Methanol extract of
Mitrarcapus villosus, Psidium guajava, Senna spectabilis and Anogeisus leocarpus contained tannins, phenols, cardiac glycosides, flavonoids, saponins,…
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Abstract: The present study investigates the physicochemical properties of selected brands of vegetable oils (groundnut,
soya bean oil, palm oil and palm kernel oil) sold in Minna, using standard procedure. The specific gravity of
the oil ranged from 0.93±0.30 to 0.96±0.20. There was a significant difference in the relative densities of the
oils studied. Natural palm oil has the highest relative density (1.42±0.26) while natural grand pure oil has the
least (1.36±0.13). The refractive index varied from 1.35±0.05 to 1.45±0.35.…
READ MORE Download Staff Profile      

ABSTRACT
The proximate and mineral composition of water melon, bitter melon, pawpaw, guava
and cherry seeds were carried out; these sample seeds were obtained from discards
of plants and prepared for use by decocting, sun drying and grinding into powder.
Using petroleum ether; of boiling range 40-60oC, their fats were extracted, the
protein content, ash content, crude fibre, moisture, carbohydrate as well as the
mineral contents were determined using standard methods. The fats yield of
44.00±0.04, 34.00±0.00, 26.01±0.00, 19.01±0.02 and…
READ MORE Download Staff Profile      

Abstract
This paper is focused on a salary management system that comprises localized data tailored to the domain of Nigerian schools payroll management. The requirements engineering methodology, fact finding techniques such as descriptive and participant observation, and database analytics tools such as entity relationship diagram are combined to achieve the success of having a payroll management system that can handle employee and management staff data securely with minimal manual intervention. The design was made to fit all necessary segments to…
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Abstract: Competitions in the mobile market has driven mobile software
application organizations to meet market demand by developing applications
within a short period of time which should run on different mobile platforms. As
such, porting these mobile applications to other platforms once they have been
developed on one platform, has been considered a desirable attribute. However,
the methods used in porting these mobile applications to other platforms have
been adhoc which has also affected the testing activities of the ported…
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Abstract: Internet has become ubiquitous and organizations have moved from the traditional storage using physical files
localized in cabinets to online remote storage accessible over websites. Over the years, different website evaluation tools have
been developed to assist web administrators with website maintenance functions. Prior to a proper website assessment using
majority of such tools, the web administrator would have to access each one differently reasons being that each tool is
developed to measure different quality parameters. Later, Fuzz-web was…
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ABSTRACT
This research focuses on reducing or minimizing the power consumption, thereby increasing the network
lifetime and also demonstrates a methodology for power consumption evaluation of WSN. The research also
analyzes the energy consumption of ad hoc nodes using IEEE 802.11 interfaces; this was achieved using OPNET
simulator. The evaluation takes into account the properties of the medium access protocol and the process of
forwarding packets in ad hoc mode. The key point is to determine the node lifetime based…
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Abstract
Energy is a limited resource in wireless sensor networks. In fact, the reduction of power consumption is crucial
to increase the lifetime of low power sensor networks. Wireless sensor networks consist of small, autonomous
devices with wireless networking capabilities. In order to further increase the applicability in real world
applications, minimizing power consumption is one of the most critical issues. Therefore, accurate power model
is required for the evaluation of wireless sensor networks. To estimate the lifetime of sensor…
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Abstract
With rapid and flexible resource provisioning of virtualization in data centers, problems of determining optimal
virtual machine (VM) placements and dealing with virtualization overheads have emerged due to workload
fluctuations and changing needs. These challenges have impacts on system performance.In this work, a
performance model based on queuing theory, statistical methods and basic theories on system performance is
proposed in which the researcher models the response time distribution of an application performance metric
conditioned on variables that can be…
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ABSTRACT
The number of massive data collected today by software in different fields vary
from academia to business and many other fields, this growth of data is
increasingly becoming a huge problem in regards to storage and effective data
management to meet up with high performance and scalability needed. The need
for highly organised data storage and analysis for the purpose of accessibility by
other applications simultaneously on real time bases is greatly on the increase. The
emerging of new…
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Abstract: intelligent transportation systems (ITS) based on wireless sensor is proposed in this paper the design of the positioning system, using wireless sensor network with low cost, low power consumption, multi-function, the characteristics of the sensor nodes deployed in monitoring area, through the vehicle's sound, vibration, infrared, magnetic field, such as signal analysis, to identify location and tracking, and in appropriate time to continue to track vehicles. One of the main goals of intelligent transportation systems (ITS) is economical profit…
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Abstract

this study investigated availability and utilization of information and communication technology (ICT) facilities by teachers for effective teaching and learning in federal polytechnics, using descriptive survey research design.

ABSTRACT: Research in weather measurement, monitoring and prognostications are
becoming more and more pertinent in this era of global warming; getting the appropriate
weather predictions and taking the necessary precautions have become very paramount. This
research shows the influence of air temperature on the dew point temperature in Benin City, Edo
State, Nigeria. The dew point temperature was approximated from the measured air temperature
and relative humidity with the aid of a self-designed weather monitoring system in 2016 and the READ MORE Download Staff Profile      

ABSTRACT: In this study, atmospheric variables such as air temperature, relative humidity and atmospheric
pressure were evaluated in order to determine the atmospheric refractivity over Auchi town in Edo State, Nigeria using
a portable weather monitoring system. The data revealed that, the average atmospheric refractivity was 354.31 N-units.
It was observed that air temperature, relative humidity and atmospheric pressure were having significant influence on
the atmospheric refractivity during all the months in 2017. This influence was much during the months…
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Abstract
One of the major concerns of cellular network service providers and their subscribers/customers is its performance which is mostly measured and determined by the Quality of Service (QoS). The assessment of these services from cellular network service providers’ point of view is mainly based on some Key Performance Indicators (KPIs). This research exploits and evaluates the major Key Performance Indicators to analyze the quality of service of an operational cellular network service provider that cover the Redeemed Christian Church…
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ABSTRACT: Despite the fact that GSM network have been in Nigeria for more than a decade, it is widely observed that each time there is a major event in a certain location and there is movement of people to that area, it is always very difficult to get a call through within the period by which the event is holding. The ultimate purpose of the research is to establish a baseline that correlates network quality and performance within an area…
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Abstract
Energy from the sun is now a major focus of many researchers mainly due to the inadequacy of fossil fuels to meet the recent high demand of energy. In other to convert this energy into useful means, solar panel needs to be put in place. In this study, the effects of some meteorological variables on the efficiency of solar panel within Benin City, South-South region of Nigeria was investigated. The physical principles of mono-crystalline solar panel were examined with…
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Abstract. In this study the influence of some meteorological variables on Ultra High
Frequency (UHF) radio signals from Edo Broadcasting Service (EBS) in Benin City, South-
South, Nigeria located within Latitude 6°20’17?N and Longitude 5°37’32?E was investigated.
The measurements of the radio signal strength from EBS Television, transmitting at 743.25
MHz UHF and some meteorological variables (air temperature, atmospheric pressure and
relative humidity) using the Digital Community-Access/Cable Television (CATV) analyzer
and a self designed cost effective portable weather monitoring system…
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Abstract
This research investigates the effect of stage cascade on amplifier circuits using transistor in the common emitter configuration. A two-stage amplifier was constructed and its performance was analyzed accordingly.
The voltage gain of the amplifier with bypass capacitor is 16.09dB and that non- bypass capacitor is 15.98dB with bandwidths of 600Hz and 800Hz respectively. The current gain of the circuit is 14.2dB. Input and output resistances of the circuit are 333.3? and 415.58? respectively. The power gain of the…
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Abstract
The electronic and structural properties of group III-V zinc blende AlAs, GaAs semiconductors and their alloy AlxGa1-xAs were
studied theoretically. The virtual crystal approximation (VCA) has been used in conjunction with both the meta-generalized
gradient approximation (MGGA) and the generalized gradient approximation (GGA) in the atomistix toolkit-density functional
theory (ATK-DFT) implemented in virtual nanolab 2016.2 to investigate the effect of increasing the concentration of
aluminum (Al) on the lattice constant and band gaps. The results obtained are quite good…
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ABSTRACT
Indoor cellular network signal outages and poor reception occur in some indoor locations, as a result of building penetration loss; which accounts for increased attenuation of received signal strength of a cellular network signal when a mobile is moved from outdoor to indoor. Penetration loss is influenced by the type of building materials used in building construction and the building structure/orientation. In this study, the effect of building materials and structures on cellular network signal strength was investigated. A…
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ABSTRACT: The influence of weather in all aspects of human endeavours is evident in the recorded loss of lives
and properties due to weather related disasters usually triggered by global climate changes. Hence, the need for the
collation of information about the temporal dynamics of weather changes is of paramount interest. This research was
aimed at determining the relationship between relative humidity and the dew point temperature in Benin City, Edo
State, Nigeria. The dew point temperature was approximated from…
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There have been a lot of scientific discords on the effects of electromagnetic fields along electric
power lines for close to four decades now. These fields are concentrated close to the power lines
and fall with distance. The magnetic fields vary as the load on the power lines changes while the
electric fields remain approximately constant. Electric power lines produce large amount of
extremely low frequency electromagnetic fields. This research gives an analysis of electromagnetic
fields emitted by 330 kV…
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ABSTRACT
Interference reduces the signal quality of any cellular network system and is a major problem in
Radio Access Network that need to be addressed because its causes degradation of the signal
quality thereby reducing the quality of service of the particular network service provider. Hence,
interference must be controlled and managed in other to improve the quality of signal in the cellular
network system. This research presents a method of interference reduction by canceling
interference by regenerated signals from…
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Abstract
The study of the variability in temperature is now of great concern not only because of its influence on global warming; which is now a universal threat to humans and its atmospheric environment but also its cruel effects on agricultural activities. In this study temperature variable of four decades (1978-2017) for Auchi, Edo State, Nigeria was collected from the archive of the Nigerian Meteorological Agency (NiMet) so as to ascertain the temperature variability. The three methods that were used…
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a b s t r a c t
The surface refractivity, the refractivity gradient and effective earth radius factor (k-factor) are useful
ingredients for predicting the local radio wave propagation conditions in the troposphere. In this study
the surface refractivity, refractivity gradient and k-factor were estimated and analyzed from the measurements
of air temperature, relative humidity and atmospheric pressure in Auchi area of Edo State, Nigeria
which is located within Latitude 7.07N and Longitude 6.27E using a set of three…
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Abstract

this paper reports the effect of the re-ageing(RA) step of a novel thermomechanical ageing treament (TMT) in order to ascertain the mechanical...

ABSTRACT
One of the major problems in Wideband Code Division Multiple Access (WCDMA) Radio Access
Network (RAN) is interference; which reduces the signal quality of a cellular network system. Most
cellular network service providers use either frequency planning or code planning techniques to
analyze the interference and assign frequencies and codes based on measurement reports from
network statistics.
This research presents a bright analysis of one of the main method for reducing interference in
WCDMA technology using some Key Performance…
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ABSTRACT
Getting the latest weather parameters and taking the necessary precautions about the recent
climate induced environmental disasters have become a major course of concern in this era of
global warming. In this research a cost effective weather monitoring device was constructed using
an Arduino Mega 2560 microcontroller and some contemporary suitable sensors with a real time
data logger and LCD. The constructed weather monitoring system is beneficial in terms of its ondevice
display, smaller size, cost effective, flexibility and…
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ABSTRACT
Due to increase in energy cost of transmission, high voltage transmission becomes the most
economical for the transfer of large amounts of electrical power, because the higher the
transmission voltage, the more efficient and cheaper the transmission. Due to increase in
population, the towns are expanding, and naturally result in the construction of buildings near high
voltage power lines. This research gives an in depth analysis of fields emitted by 11 kV and 33 kV
power line and also…
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Abstract In this study, the atomistix toolkit-density functional theory has been used to investigate the structural and electronic properties of zinc-blende aluminum arsenide(AlAs), indium arsenide (InAs) semiconductors and aluminum indium arsenide (AlxIn1-xAs) alloy. The generalized gradient approximation (gga) has been used to obtain the lattice parameters which are compared with both theory and experimental results. To calculate the electronic band gaps,we employed the TB09LDA meta-generalized gradient approximation (mgga), and obtained new band gaps for aluminum compositions 0.0625, 0.125, 0.1875, 0.3125,…
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Abstract
For over three decades there has been a growing understanding of the effects of electric and magnetic fields along High voltage Transmission Power lines (HVTPLs). These fields are higher close to the HVTPLs and fall with distance. Magnetic fields vary as the load on the HVTPLs changes whereas electric fields stay roughly constant. HVTPLs generate large values of Extremely Low frequency (ELF) Electromagnetic Fields (EMFs).
This research gives an analysis of EMFs emitted by 330kv HVTPLs in Evbotubu Area…
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ABSTRACT: In this study the annual rainfall data of forty years (1978-2017) for South-South, Nigeria was collected
from the archive of NiMet. Three methods were used for the analysis; statistical differences between two the equal-length
time scales, coefficient of variability and the anomaly approach. The trend analysis using t-test, Sen’s estimator slope and
Mann Kendall were also carried out in order to determine the trend in the rainfall variables. The results show that the
differences between the two means of…
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Abstract

In continuation of the search for a more environment friendly and cost effective waste management technique, this study focused on evaluating the effect of varying...

Abstract

The oil from edible avocado pear (Persea americana) and African pear (Dacryodes edulis) were extracted with Chloroform...

Abstract

Palm oil husk sample was burnt in air at a very high temperature, in an open combustion pan to obtain the ash...

Abstract

The application of superabsorbent polymers(SAPs) and/or biochars to stressed lands offer solutions to several critical ecological, energy and economic challenges posed by degraded lands due to human activities.

Abstract

The effect of coagulants treatment on the physicochemical properties of water was investigated in this study.

Abstract

Rubber seed oil alkyd resins of 50% oil length were prepared...

Abstract

Three paint samples were prepared and examined in the study...

Abstract

A new boosting algorithm which makes use of the bootstrap technique is introduced in this paper...

ABSTRACT
Kernel density estimation depends on appropriate smoothing parameter selection in its implementation since the method
is mainly for data exploration and visualization purposes. While considering the effect of the smoothing parameter, the
form of aggregation employed will determine the size of the smoothing parameter required for better performance. This
paper considered two aggregating methods with respect to the asymptotic mean integrated squared error (AMISE) as the
criterion function by introducing the multiplier factor that regulates the selection of smoothing…
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ABSTRACT
Boosting is a bias reduction technique while bagging is a variance reduction method. These two
methods aim at reducing the asymptotic mean integrated square error (AMISE). This study aims to
show that bagging is a boosting algorithm in kernel density estimation since both techniques use large
smoothing parameter(s). This relationship was verified by real and simulated data.

Abstract The bivariate kernel density estimator is fundamental in data smoothing methods especially for data exploration and visualization purposes due to its ease of graphical interpretation of results. The crucial factor which determines its performance is the bandwidth. We present new methods for bandwidth selection in bivariate kernel density estimation based on the principle of gradient method and compare the result with the biased cross-validation method. The results show that the new methods are reliable and they provide improved methods…
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Abstract

the rules for choosing smoothing parameter are generally based on the relatively simple but important ideas of balancing bias and variance globally.

Abstract

Kernel density estimation is an important smoothing technique..

Abstract

The choice of an ideal or appropriate smoothing parameter in multivariate kernel density estimation is considered by looking at six different methods...

Abstract
Decision making process in stock trading is a complex one. There are numbers of technical indicators that are used by traders to study trends of the market and make buying and selling decisions based on their observations. This research seeks to deploy fuzzy inference to stock market, with four indicators used in technical analysis to aid in the decision making process in order to deal with probability. The four technical indicators are the Moving Average Convergence/Divergence (MACD), Relative Strength…
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Abstract— This research presents a method of developing Bayesian Network models of complex systems using data sourced from open survey. The process of collection and conversion of random survey information into probability forms are shown with emphasis on integrating expert knowledge and respondents’ responses into a Bayesian system model. Random survey questionnaires were administered to customers of an online store to capture their responses about factors that make for efficient product delivery and quality website design. The responses and other…
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Abstract

in this work, the electron gas energy of some liquid metals and alloys were computed based on statistical physics approach...

ABSTRACT
Quest for precision components and parts in manufacturing industries has led to an increase in the need for
effective and efficient finishing operations that can satisfy this increasing demand. Grinding process can meet these
critical needs for accurate and economic means of finishing parts, and generate the required surface topography.
Modeling of grinding is necessary to understand the effects of process conditions, grinding wheel properties and
workpiece material dynamics thus allowing for process planning, optimization, and control. In spite…
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ABSTRACT
The need for viable and credible election has become an essential requirement, if most
Africa nations will still continue to exist as indivisible sovereign nations and sustain their
nascent democracy. In order to achieve this, electronic voting (e-voting) system becomes
inevitable because traditional methods of voting used for previous elections were found
to be characterized with various degrees of irregularities and lack sufficient credibility
required for a democratic system. In this research work, the e-voting system proposed
here was…
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Abstract
Communication is an integral part of man without which it will be practically impossible for man to achieve
anything meaningful in life. It is a fact that most 21st century organizations have a network of computers in place,
however majority of these organizations have not fully utilize the facilities available to them on their network. In
this paper, we present the implementation of VoIP, desktop sharing, virtual team, file sharing, life chat and internal
memo transmission on a network…
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ABSTRACT
The problem of effective healthcare delivery system in most African countries especially remote
areas cannot be over emphasized as the populace experience poor healthcare delivery due to high
level of poverty, shortage of trained and experienced medical personnel and poor roads to limited
health facilities available in the urban areas. In this study, we proposed an architectural
framework for web-based telemedicine system in which a remote medical centre can access the
medical resources available in urban medical centres via…
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Abstract.
Rain fade refers primarily to the absorption of a microwave Radio Frequency signal by atmospheric
rain, snow or ice, and losses are especially prevalent at frequencies above 11GHz. The degradation of
a signal caused by electromagnetic interference of leading edge of a storm front is also referred to as
Rain fade. It does not need to be raining at a location for it to be affected by rain fade, as the signal
may pass through precipitation many miles away,…
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In recent years, most Wireless Local Area Networks (WLAN) are based on the IEEE 802.11b, 802.11a,
802.11g or 802.11n standards. These standards define how to wirelessly connect computers or devices to
a network. Wireless enabled devices can send and receive data anywhere within the range of a wireless
access point. The choice of the Wireless LAN protocol depends on the requirements of the individuals or
a company who aims to implement the WLAN infrastructure. Some of the parameters that should…
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Abstract

Wave propagation through crystal was analyzed using wave equation in conjuction with pseudo-dielectric function...

Abstract: The continuous decline in quality medical healthcare delivery to rural communities in developing
countries is what necessitated this study. Most patients in remote areas cannot afford transportation to the
nearest healthcare facility providing the necessary medical services relevant to their situation. Provision of
support services and continuous medical education for those healthcare professionals working in rural areas
are extremely difficult. Telemedicine is a feasible tool to address these issues. In this paper, we proposed a
framework for web-based and…
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Abstract: Electronic dumping is a global challenge and fortunately majority of these wastes could be recycled can
provide an economically viable and healthy environment as well as offer new insights on how potential sources of
environmental hazards could be transformed into useful products. In this paper, we present data used during the
creation of an automated power outlet system from electronic wastes. Automated power control and distribution
systems are important in reducing the cost of energy utilization in homes, offices,…
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Abstract

tarnsportation systems available at present...

In recent years, progressively data proprietors have embraced cloud storage service, by which they will subcontract their data to the cloud server to significantly reduce the local storage overhead, due to the rapid growth in the cloud computing market and development. Cloud computing is the delivery of hosting services that are provided to clients over the web. It is quite common, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services)…
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As in other socioeconomic spheres, social networks and media are veritable tools for education as they provide easy channels
for information and knowledge exchange and their trendy nature make them very attractive and portable among the young
and old. However, these applications are fraught with security challenges ranging from surveillance to invasion of privacy
and unwarranted tampering with user data regardless of the seemingly impressive underlying rights of users as claimed by
the vendors as to user accounts. Various vulnerabilities…
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In 2019, elections in Nigeria gulped a whopping 234.5 billion Naira as against the 108.5 billion Naira approved for the nation’s electoral body in 2015. Growth in population of registrable voters and number of parties were cited as the cause of increased funding. Internet voting have been proposed and used in some countries. Transparency, efficiency and effectiveness had been documented as grounds for i-voting. In the same vein, there has been several arguments against the adoption of i-voting. The Increasing…
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Data centres are important facilities in modernization of cement production industries across the world. In the last two decades, Nigeria has witnessed an amazing cement manufacturing and production reforms. Consequent upon these reforms is a marked reduction in the importation of bagged cement from other countries thereby reducing capital flights and boosting the gross domestic product. A typical cement plant in Nigeria produces an average of 6000 metric tonnes of bagged cement per day. Of vital importance to the instrumentation…
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Meteorological variables are crucial constituents in the estimation
of refractivity disseminations and the uncharacteristic radio wave
propagation situations of the troposphere as a result of their impact on radio
wave communication relations over the atmosphere. In this study
the measurement and assessment of air temperature, relative humidity and
atmospheric pressure was carried out for a period of one year; 2018,
so as to estimate the refractivity gradient over Iyamho-Auchi, Edo State,
Nigeria using a self-implemented inexpensive portable meteorological
monitoring device.…
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In the last decade, communication through traditional broadcast media has been severely influenced by the growing sophistication in information communication technologies. It is little wonder how mobile smart devices are rapidly emasculating the socioeconomic landscape of traditional broadcasting. In the work place, home, and leisure the trend is same. Social media has stolen the game and is quickly leading to another age, the “machine relationship” age where the usual intimate social relationships are replaced by mobile devices and social networks.…
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The ever-increasing advancement in computing and information technology evidenced by the deployment of super computers and gigantic data centres across the globe had been documented as potential sources of environmental pollution, degradation and key contributing factor to the climate change problem. The inherent aspiration of organizations to maintain competitive advantage over peers is a major driving force that apparently blurs the thinking of world‘s multinational chief executives in respect of the impending dangers that may arise from the ever-growing large-scale…
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Pesticides is very important for the prevention, mitigation, destruction of pests and
diseases for the improvement of agricultural efficiency due to their contributions to
agricultural yields and improving the standard of living. Considering the dynamicity and
influence of weather in our everyday lives, it is obvious that the effects of pesticides might
also be a contributing factor and vice versa. Climate change could have an influence on both
pesticides’ usage, as well as the losses of pesticides to the environment.…
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Presently, there has been several scientific debates among climate researchers and environmental engineers
regarding the main source of global warming which invariably result to climate change. The obvious argument that the
core source of global warming is not just CO2 heat retention and other greenhouse gases, but particulate pollution that
absorbs radiation, heats the troposphere and decreases the effectiveness of atmospheric-convective heat exclusion from the
surface of the earth. However, research has continued in a bid to unravel this phenomenon…
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Interference if not properly attended to could have negative influence on
the air interface performance of any wireless network service. Hence, there is a
need to moderate interference in cellular network system. This study is aimed at
analysing the performance of decoding-based successive interference cancellation
technique. The was done analysing the performance of decoding based successive
interference cancellation on uplink High Speed Uplink Packet Access Enhanced
Dedicated Physical Data Channel. From the analysis, simulations and results
obtained from this study,…
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One of the major problems in developing countries is dearth of sufficient
energy, which in turn hampers sustainable development. Anatase is one of the
prominent polymorph of Titanium dioxide (TiO2) with great potential for solar
application except for its wide band gap which limits its solar energy utilization to
about 4%. It has fascinated much devotion from researchers owing to its extensive
array of applications coupled with its availability and cost effectiveness. Doping
has been presented as a means to…
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Software development is a core component in the academic training curriculum in various computing disciplines in universities, colleges, polytechnics, and vocational institutes respectively. In many of the said academic curricula there is often a superficial treatment of vital project management elements such as scheduling, costing, risk and quality management, and basic legal concepts of contracts. Every software developer/engineer is expected to have basic knowledge of the said elements which go a long way to boosting his/her professionalism during contract negotiations…
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Web-based and other electronic voting platforms are growing as
some countries have considered them viable in ensuring
transparency and accountability during elections. One of the most
cited challenges that hinders widespread adoption borders on
cybersecurity. In modern times, attackers and cyber criminals
have developed automated tools that could exploit seemingly
secured data intensive applications within few minutes resulting
to data breaches and losses. Data injection attacks (DIA) are
prevalent on web applications and software engineers are
combatting the trend using…
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One of the most debated issues surrounding wireless connectivity is performance especially under dierent topographic and climatic scenarios.
Performance has a direct relationship with throughput measured in terms of how well a given wireless connectivity provides consistent services
over a given period compared to the wired alternative. Research has shown that wireless connectivity is constrained by significant physical
components such as topography, weather conditions, propagation frequency, and distance. It is commonplace to see notable vendors of wireless
network products make…
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Poultry business is one of the popular and fast-growing Agro
businesses in Nigeria. Unfortunately, the practice of proper
poultry waste management has often been neglected. This study
focuses on the need to contain environmental pollution arising
from such poultry wastes. The study adopted a cross sectional
survey wherein 36 poultry farmers were randomly selected from
the three local government areas that make up Etsako district of
Edo State Nigeria. Following the distribution of thirty-six
validated questionnaires, thirty-three were completed and READ MORE Download Staff Profile

This paper is an attempt to analyze Nigeria‘s principal cybercrime legislation from social, technical and legal perspectives in a bid to highlight some perceived gaps, which may hamper the expected goals of the law. An exploratory narrative-textual case study approach is adopted in this paper and emphasis is made on some grey areas identified in the law. The points discussed include the concept of critical national infrastructure vis-à-vis critical infrastructure, and the responsibilities of some vital agencies and ministries. A…
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Analysis of images acquired from X-ray cargo scanning sites at the ports of discharge of consignments is central to modern risk management operations on imports. Often times the images (in their raw format) must be relayed to remote locations for analysis and risk profiling and this may constitute a heinous task owing to the unique format and signature of such multimedia documents as well as type of storage media attached directly to the high capacity X-ray cargo scanners. This paper…
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Compared to other components of the Cyberspace, Cybersecurity is emerging the most prominent domain of concern. The reason may not be unconnected with the geometric growth in in the evolution of new computer-based technologies by the day and the deployment of such technologies for both positive and negative purposes. There are four major areas where Cybersecurity programmes are massively ongoing: Technology Products, Research, Education, and Business enterprises. These four areas are unarguably very vital and affect the socioeconomic development of…
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