bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adolescent Development in Learning and Secondary Education in Nigeria: New Trends and Expectations
Authors: Owoseni Abraham , Ibem Eziyi , Opoko Akuunaya 
Published: February 2021

Abstract
Adolescents are young people aged between 10 and 19. Their growth and development is a crucial element as they transition to adulthood. Benchmarking on the structure of education in Nigeria, most adolescents fall within the secondary education cadre where they are exposed to learn and acquire affective, behavioural and cognitive skills, commonly referred to as the ABC of learning. However, the extent of what adolescents learn and how they learn has become undefined in a way that can influence practice and teaching. This study presents the results of research done to investigate the new trends and expectations in adolescent development in learning and secondary education. Data were collected from late adolescents across the study area in Lagos State who, were enrolled in approved senior secondary schools within the study area. The multi-stage sampling technique was adopted using a hybrid of three techniques: purposive sampling, quota, and random sampling to select the final sampled schools. A total of 674 copies of the questionnaire were administered by hand during the first term of the 2018/2019 academic session. A total of 488 were analysed using descriptive statistics. The result showed that adolescents in the study area were predominantly auditory learners; they learn through lesson discussion and prefer to listen in class. This study has reiterated that adolescents love learning and are not lay back. They can be well cultured and groomed when learning is best suited and presented to align with their learning styles as against a one-fit-all approach to teaching instruction in the classroom.
An Organisational Diagnostic model for a Sustainable Organizational Performance
Authors: Adebayo Olufunke Patricia , Worlu Rowland E. , Moses Chinonye Love , Ogunnaike Olaleke Oluseye , Salau Odunayo P. 
Published: February 2021

Abstract
The study examines a comprehensive organisational diagnostic model, which can be used to diagnose for the root cause of failure within the processes, also to check for the state of health of an organisation. The Weisbord six-box organisational diagnostic model is consist of; purpose, structure, leadership, relationships, rewards, helpful mechanisms, attitude toward change. The model is applied by checking these key areas of operating within the organisation for problem-solving, towards a sustainable organisational performance. This paper provides a framework that managers can incorporate when performing a routine check, also a comprehensive model that can integrated for a sustainable performance.
A Simplified Approach for Optimal Location of distributed Generators within Distribution Network
Authors: Somefun T.E. , Abdulkareem A. , Awosope C.O.A. , Alayande A.S. 
Published: February 2021

Abstract
Distribution network is the closest to the consumer of electricity in the whole of the electric power system (EPS) network. It is as important as other parts of the entire system. Lack of sufficient power to meet the required load demand has aided the popularity of distributed generators within the distribution network in order to argument the available power. However, the point of installation of a distributed generator (DG) is essential, considering the entire EPS security. In this work, inherent power system network (IPSN) is proposed to determine the best position for distributed generator within distribution networks, which results in a minimal loss. Matlab R2018a is deployed as a simulation tool. Six bus IEEE network and radial 12-bus network are used to ascertain the feasibility of the proposed method. Results obtained for both test network are validated through the results from the forward-backward sweep method for distribution load flow study.
Characterization of Penetration Strength of GSM Signals (900 MHz) and their attenuation within some selected Buildings at the University of Ibadan
Authors: Ogunsola O.E. , Adeleke O. , Gbadamosi I.A. 
Published: February 2021

Abstract
The diverse challenges been encountered by GSM subscribers within some locations at the University of Ibadan through their usual transits within and outside of buildings, before been able to receive uninterrupted flow of GSM communication due to signal fade and call drop, motivated the need to attempt to characterize signal strength penetration in buildings. This characterization would assist in determining the link budget required for a better Quality of Service (QoS) in this community. However, signal strength path measurement from GSM transmitter (i.e. base station) to the receiver is amongst the parameters required in estimating signal attenuation. Thus, in order to be able to estimate the magnitude of signal penetrations into buildings at the University of Ibadan, the factory fitted signal strength software installed on an android phone was utilized in obtaining the signal strengths of the four major GSM service providers (940MHz, 950MHz, 955MHz and 960MHz) operating in this vicinity. These measurements were taken for three weeks during the daily peak hours of communication (09Hr, 12Hr, 15Hr, and 18Hr) within every three minutes interval, at eight selected buildings (isolated and non-isolated) due to their closeness to GSM base stations. Analysis of data showed that the signal strengths at corridors of both isolated and non-isolated buildings are stronger than those indoors. Moreover, the signal attenuation used in depicting signal fade further showed that the attenuation increased at indoors more than corridors. This increment in indoor attenuations could be due to resistance against signals by the materials utilized in the construction of these buildings. In essence, the base station’s transmission power for this community should be increased by the various GSM network service providers in order to overcome attenuation problem. Likewise, the determined penetration attenuation allowance value of 15dB could be utilized in designing their link budget for a better QoS.
Smart waste bin system: a review
Authors: Noiki Ayodeji , Afolalu Sunday A. , Abioye Abiodun A. , Bolu Christian A. , Emetere Moses E. 
Published: February 2021

Abstract
The recent urbanisation in the developing nations of the world, rise in population, increase in human activities. Pattern of production and consumption has resulted to generation of huge amount of waste that must be properly disposed, treated and managed to ensure sustainable environment and a decent living for the increased population. The current waste management practices are not effective and efficient enough to handle the rise in waste level. The traditional approachhas led to this challenge. This paper deals with a systematic review of existing literatures, identifying and characterizing active research activities on smart waste bin that will allow effective waste management. There is a great need for deployment of this Smart technology on a large scale in the developing nations of the world for a sustainable healthy and clean environment. However, the cost of applying such solutions is still relatively high.
Liquid Holdup Measurement in Crude Oil Transportation Using Capacitance Sensors and Electrical Capacitance Tomography: Concept Review
Authors: Okoro Emmanuel E. , Rachael Josephs E. , Sanni Samuel E. , Emetere Moses E. 
Published: February 2021

Abstract
Liquid holdup is one of the most significant parameters in multiphase flow. Accurate measurement of liquid holdup is required to calculate pressure drops in oil and gas wells which is essential in analyzing the well production, performance, well designing and optimization. This study reviewed different methods used in measuring liquid holdup and highlighted the most effective methods currently used in multiphase combinations. More importantly, liquid holdup measurements using capacitance sensors in slug flow, bubble flow, churn flow, annular flow and coaxial flow are discussed. The features considered during the review include, electrode material, angle of rotation, curvature and guard electrodes. The operational issues observed when using capacitance based sensors were highlighted. In single capacitance sensors like the helical arrangement which has high sensitivity, error in symmetry and inability to measure fluids with lower dielectric constants were however observed. Concave sensors are more accurate for phase shift detection but lower sensitivity compared to the helical type. From the knowledge and technical gaps identified from literature, this study proposed Electrical Capacitance Tomography tool with dual capacitance sensor for effective liquid holdup measurement in oil and gas transportation pipelines because of its ability to determine the dielectric permittivity distribution inside the pipeline from external capacitance measurements with real-time imaging of the multiphase flow.
Rain Height Statistics from GPM Data for Satellite Communication Systems in Nigeria
Authors: Lawal Yusuf Babatunde , Ojo Joseph Sunday , Falodun Sunday Emmanuel 
Published: February 2021

Abstract
In this present era, the rising demandfor seamless wide band internetwork services such as 5G network requires the propagation of radio waves at high frequency. Rain-induced attenuation poses a lot of dangers on Earth-Space satellite links operating at frequencies above 10 GHz. Although the magnitude of overall attenuation on any radio link is determined by various natural phenomena such as atmospheric gases, fog, mist, aerosol, ice, contribution by rain remains the most significant. This paper provides extensive study on the rain heights variability in Nigeria using data obtained from the Global Precipitation Mission (GPM). The result depicts an increasing trend of rain height from 4.92 km in the southern part of the country to about 5.23 km in the north. The results show that ITU-R recommended value underestimate rain height. The results also show seasonal dependence of rain height throughout the years of study. Analysis of the GPM data shows thatfreezing heightsacross all stations were underestimated byabout 9 % when compared with previous TRMM-based research. The present study has revealed the preference of GPM data over TRMM data for the estimation of rain height and rain-induced attenuation.
Smart Waste Management for Smart City: Impact on Industrialization
Authors: Fayomi G U , Mini S E , Chisom C M , Fayomi O S I , Udoye N E , Agboola O , Oomole D 
Published: February 2021

Abstract
Waste in different forms such as solid waste, gaseous waste and liquid waste increases due to population increase, urbanization, and industrialization and affect the globe. Waste management involves activities such as reuse, recycling and reduces waste generation and other strategies to combat the effect of waste generation due to increasing population and industrialization. Monitoring is one of the key functions of waste management, as it is needed to address the issues faced by waste management, which includes waste generation, waste collection, transportation of waste, waste treatment and waste disposal processes. This paper reviewed the technology involved in achieving a smart management and suggests the use of artificial intelligence (AI) to solve waste management such as convolutional neural network for efficient classification and waste identification and other AI technology.
Influence of Organic Composite Material for Coating Application: A Review
Authors: Adejumo O A , Fayomi O S I , Udoye N E , Agboola O 
Published: February 2021

Abstract
Composite materials have been used to coat products and substrates in different industries like Aerospace industry, Automobile industry;welding industry etc. The aim of this review is to describe the impacts and the effects of composite materials on coating applications in different industries. The first application mentioned was in the Aeronautic Industry, where powder (a composite material) is used to coat substrates. It has been studied and widely accepted as one of the most environmental friendly, economically beneficial and functional coating material. New types of powder coating are being developed to improve the aesthetic designs of Aeronautic and Automotive industries products. The second application was in the welding industry and its impacts on the electrode tool life was studied. The tool life is improved by 71% when TiC composite is used to coat the electrode.
Overview of Composite Materials from Green Product in Mechanical Application
Authors: Kilanko O. , Babaremu K.O. , Fayomi O. S. I. , Akande I.G. 
Published: February 2021

Abstract
Green composites have gotten a lot of awareness in the composite industry lately because the whole world is driving toward sustainability whereas conventional composites are usually prepared from petroleum products which are usually non-degradable and result in environmental pollution. This paper presents a succinct review of the composite materials produced from green composites with a potential of being applicable in automotive body parts, aircraft body parts, medicine, construction etc. The review classifies the different research works done into six groups, then identifies gaps in research with the aim of charting a course for future researchers. Also, the review is very essential to manufacturers as they can be kept abreast with the latest developments in green composites which could replace some of the conventional composites used in the manufacturing industry.
Influence of Transition Metal Doping on the Structural and Electronic Behaviour of Quaternary Double Perovskite, Cs2AgInCl6, using First-Principles Calculations
Authors: Ogunniranye I. B. , Oyewande O. E. , Atsue T. , Usikalu M. 
Published: February 2021

Abstract
Recently, direct bandgap double perovskites are becoming more popular among researchers in the photovoltaic community owing to their potential to address issues of lead (Pb) toxicity and structural instability inherent in lead halide (simple) perovskites. In this study, In-Ag based direct bandgap double perovskite, Cs2AgInCl6 (CAIC), is treated with transition metal doping to improve its material properties. Investigations of structural and electronic properties of Cu-doped CAIC, Cs2Ag1−xCuxInCl6, are done using ab-initio calculations with density functional theory (DFT) and virtual crystal approximation (VCA). With the introduction of Cu-dopant, obtained results show improvement in the structural and electronic behaviour of CAIC. Based on obtained results, transition metal (Cu) doping is a viable means of treating double perovskites - by tuning their material properties suitable for an extensive range of photovoltaics, solar cells and optoelectronics.
Adopting Hybrid Energy Technology for Carbon Emissions Reduction in Nigeria’s Telecommunications Industry
Authors: Gershon O , Agbene E 
Published: February 2021

Abstract
Telecoms cell sites, powered by petrol and diesel generators, have high carbon footprints and contribute increasingly to global warming, and thereby climate change. Utilizing primary data from telecom cell sites of a major operator in Nigeria, this study empirically determines the firm’s CO2 emissions and considers how hybrid energy technology (HET) could be adopted to reduce the industry’s carbon footprint. Data of fuel utilization in power generation are applied to compute CO2 emissions. Towards reducing the firm’s and industry’semissions, hybrid energy technology options for incorporating solarin the energy mix are considered. Hybrid energy technologies optimize existing hydrocarbon generating plants with photovoltaic panels and storage batteries to provide minimum capacities for powering the electronic devises. Results show that HET opportunities exist for most telecom firms’ cell sites given Nigeria’s geographical advantage to access sunlight. In addition, through the adoption of hybrid energy, average daily fuel usage is reduced by 50% (apart from periods of peak demand and weather disruptions). If adopted by the major telecoms operators, as recommended, greenhouse gas emissions level in the industry will reduce significantly.A few notable challenges are highlighted in the paper. However, job creation in the renewable energy industry is a notable advantage of transforming power generation in the telecommunications industry.
The use of Waste Duck Eggshells for Sustainable Energy Production
Authors: Ayoola A.A. , Adeyemi G. , Raji O. , Babalola A. 
Published: February 2021

Abstract
In this study, waste duck eggshells were processed into high grade CaOheterogenous catalyst for the esterification-transesterification of palm kernel oil (PKO) to obtain biodiesel. The production processes involved are calcination of duck eggshells into CaO, XRD and XRF analysis of CaO produced, PKO fatty acid components determination, transesterification of the esterified PKO and the formulation of a suitable model. High biodiesel yield of 84% was obtained at catalyst concentration of 9 wt./wt. %, reaction time of 2 hours and methanol/oil mole ratio of 13, using CaO catalyst (derived from duck eggshell). The good quality of biodiesel produced was ascertained by its properties that fall within ASTM specifications (kinematic viscosity of 4.1 mm2/s, flash point of 195°C, density of 869kg/m3, water content of 0.045 v/v %).
Pilot Plant Design of 1kg Biodiesel Production using Waste Soybean Oil
Authors: Ayoola A.A. , Alagbe E.E. , Makinwa T.A. 
Published: February 2021

Abstract
As part of the efforts in attaining the commercialisation of biodiesel production in Nigeria, this research work considers a pilot plant design for the production of 1kg biodiesel, using waste soybean oil (WSO). CHEMCAD 7.1.2 software was utilised for the plant design and the process flow diagram revealed that four (4) pumps, four (4) heaters, two (2) separators, one (1) drying equipment and two (2) reactors were involved. Also, the simplified and simulated 1kg biodiesel production design plant showed that 0.0513kg/hr of methanol and 0.1800kg/hr of 0.1M H2SO4 would be required during the esterification process. And 0.6921kg/hr of methanol, 0.9870kg/hr of WSO as well as 0.1880kg/hr of KOH catalyst would be required for the transesterification process. That is the results obtained serve as template for the simulation of process design plants of varied production capacities. This is a good attempt in the ease of attainment of the commercialisation of biodiesel production in Nigeria.
Nigeria’s quest for alternative clean energy through biofuels: an assessment
Authors: Nwozor Agaptus , Owoeye Gbenga , Olowojolu Olankunle , Ake Modupe , Adedire Solomon , Ogundele Oluwaseun 
Published: February 2021

Abstract
Nigeria is rich in renewable energy resources, including diverse biomasses. However, this enormous endowment in renewable energy resources has not played any significant role in the country’s energy mix. Nigeria is majorly reliant on its non-renewable sources to meet its energy needs. In pursuit of its commitment to transit to alternative clean energy, Nigeria developed the biofuels policy document in 2007. The major aspiration of the policy is to harness the country’s biomass potentials and deploy same to meeting Nigeria’s energy needs. This paper assesses the state of the biofuels sector vis-à-vis the stated aspirations of the Nigerian state as captured in the biofuels policy document. In doing so, this paper uses primary data generated from key informant interviews and augmented with secondary data. It finds a disconnect between the aspirations of the biofuels policy document and the actual state of the biofuels sector. In other words, the biofuels sector has no discernible contribution to Nigeria’s energy mix. The recommendation of this paper is in the realm of rejigging the biofuels policy in order to extract greater government commitment in evolving national capacity for biofuels development.
Atomistic Simulations of MAPbI Pm-3m Using First-Principles Calculations
Authors: Adegboyega Oluwasogo A. , Oyewande Oluwole E. , Micheal Emeka , Usikalu M.R. 
Published: February 2021

Abstract
The unprecedented fast increase in power conversion efficiency seen in photovoltaic devices based onhybrid halide perovskites have drawn significant research interests. Recent researches in this area have focused on finding different perovskites with better properties, especially stability. Atomistic simulations based on density functional theory were performed in order to investigate the electronic properties of MAPbIPm-3m using Projected Augmented Wave (PAW) pseudopotential withmodified Perdew-Burke-Ernzerhof (PBE) for solidsfunctional withingeneralized gradient approximation (GGA) as implemented in QUANTUM ESPRESSO simulation software. The results obtained gave 6.1248Åas the lattice parameter and 1.1019eVas the bandgapinMAPbIpm-3m perovskite, which shows the perovskite has a direct bandgap.
Utilization of property valuation software among estate surveying and valuation firms in Lagos state, Nigeria
Authors: Ogunnowo O. E. , Iroham C. O. , Oloke O. C. 
Published: February 2021

Abstract
In the era of sophistication in conducting professional assignments, there have been no study geared towards assessing the utilization of valuation software in property valuation. This study therefore investigated the application of property valuation software among Estate Surveyors and Valuers (ESVs) in Lagos Metropolis. 151 Estate Surveying and Valuation (ESV) firms represented the sample size. Data was analyzed using descriptive statistics and frequency count with the aid of Statistical Package for Social Sciences (SPSS). It was revealed that almost 70% of ESV firms do not readily use property valuation software, even the ones known to them. The study therefore encourages ESVs to utilize such software so as to ease their mode of operations.
Evaluation of Permeability Impairment Due to Surfactant Flooding
Authors: Abraham D. V. , Orodu O. D. , Efeovbokhan V. E. , Okoro E. E., , Ojo T. I. , Bolujo E. O. 
Published: February 2021

Abstract
In the course of chemical flooding of crude oil reservoirs with surfactants, retention of surfactant particles in the pores of the reservoir rock can cause a major reduction of the reservoir permeability. This can cause serious problems thus unfavourably influencing the economics of oil recovery. An appropriate assessment of the reduction in permeability is essential for the recovery of hydrocarbons. During tertiary recovery of crude oil, a critical evaluation of formation damage is necessary to evade operating costs, as the reservoir rock is extremely sensitive to chemicals injected. The extent to which permeability is reduced cannot be comprehensive for core field scales; it is consequently paramount to study the reduction in the permeability of a core at laboratory scale before field scale estimation. In this paper, an experimental investigation on the reduction in permeability after surfactant injection cores is presented. Surfactants were used to flood the core samples. The permeability of the cores was calculated at the beginning and end of every flood by measuring the differential pressure during surfactant flooding of the cores. From the results, it is evident that there is a strong influence of surfactants on the process of adsorption on reservoir rocks and consequently leading to reduction in permeability.