bluuebunny/crossref_metadata_2025_split huggingface dataset:
Insider Threat Detection using Binary Classification Algorithms
Authors: Oladimeji Tolulope O. , Ayo C.K. , Adewumi S.E. 
Published: April 2021

Abstract
The Insider Threat Detection(ISTD), is commonly referred to as the silent killer of organizations. The impact is greatly felt because it is usually perpetrated by existing staff of the organization. This makes it very difficult to detect or can even go undetected. Several authors have researched into this problem but no best solution has been discovered. This study therefore considers the insider problem as a classification problem. It provides a lay man’s understanding of a typical classification problem as faced in the insider threat detection research scope. It then highlights five (5) commonly used binary classification algorithms, stating their strengths and weaknesses. This work will help researchers determine the appropriate algorithm to consider for the employee dataset available for classification.
Flame Behaviour Comparison of Building Ceiling Composite using Combustion Calorimeter
Authors: Dirisu J.O. , Fayomi OSI , Oyedepo S.O , Oyekunle J.A.O. , Asere A.A , Udoye N. E 
Published: April 2021

Abstract
This study determined the heat of combustion characteristics of selected building ceilings materials. The study was intending to appraise the flame affinity or retardance of building ceiling materials during combustion. Careful selection of ceiling composite was carried out in areas like Osun state, Ogun state, Lagos state, and Kaduna State. The heat of combustion was determined, having identified the heating value from the XRY-1C Oxygen Bomb Calorimeter. The heat flux and heat release rates were determined from the results of the combustion experiment. Based on the data obtained from the discrete experiments, the combustion integrity of the samples was appraised. Particleboard has the highest heat of combustion of 45.666J/kg, while asbestos failed to ignite. Other Polyvinyl chlorides (PVC) left ⩽ 0.0007kg of char after combustion and became deliquescent after long minutes of exposure to air. The heat release rate is highest with particleboard, 118.9219 J/s, and lowest with sample 7, 2.230 J/s. The study thus establishes that PVC is safer in terms of combustion properties compared to plant-based building ceilings. Asbestos has the overall most reliable properties, but for asbestosis, its use isn’t safe for use. It is necessary to develop building ceilings with flame retardant characteristics of asbestos as an alternative to it.
Experimental Investigation of TIG-welded AISI 1008 Carbon Steel
Authors: Abima C.S. , Akinlabi S.A. , Madushele N. , Fatoba O.S. , Akinlabi E.T. 
Published: April 2021

Abstract
Carbon steel is widely used in engineering applications due to its exceptional mechanical properties, and low cost. The fabrication technique employed to weld carbon steel plays a vital role in the final performance of the welded component when put into service. TIG welding is a generally accepted arc welding technique due to its ease and versatility coupled with its capacity to produce high-quality welds. It is the most desirable technique employed for welding plain carbon steel. This work aims to evaluate the influence of TIG welding process parameters on the mechanical and microstructural properties such as tensile strength, hardness, and microstructure of AISI 1008 carbon steel. The process parameters considered in this work were the TIG welding current, and gas flow rate. The tensile testing and the Vickers hardness testing have been carried out for the welded samples. The microstructural investigation was also carried out for the fusion zones (FZ) and the heat-affected zones (HAZ). The test results were analyzed, and emerging properties were compared for the various set of parameters. Welded specimen produced with 140 A, 15 L/mm had the highest hardness value. However, the highest average ultimate tensile strength of 432.89 MPA was produced from process parameters 180 A, 19 L/mm. Finer grain structures were seen in the fusion zones as compared to the heat-affected zones for all selected parameters.
Taguchi Optimization of Surface Roughness and Material Removal Rate in CNC Milling of Polypropylene + 5wt.% Quarry Dust Composites
Authors: Shagwira H. , Mbuya T. O. , Mwema F. M. , Herzog M. , Akinlabi E. T. 
Published: April 2021

Abstract
The Taguchi optimization technique was utilized to determine the optimal milling parameters that can be used in end face CNC milling operation of polypropylene+5wt.% quarry dust using high-speed steel (HSS) tool. Three milling input parameters i.e. the feed rate (f), the cutting speed of the spindle (N) and the depth of cut (dc) were optimized while considering the surface roughness (Ra) of the machined composite material and the material removal rate (MRR) during machining as the responses of the experimental design. From the results, the cutting speed (100 rpm) and the feed rate (120 mm/min) were the most important control parameters which greatly influence the surface roughness at 41.4% and 28.8% contribution respectively. In the case of the material removal rate, the depth of cut (0.8 mm) was the dominating factor at 98% contribution.
Chip Morphological Behaviour During Machining Of Ti-6Al-4V Using Refrigerated Soluble Oil
Authors: Ogedengbe T.S. , Abdulkareem S. , Afolalu S.A. , Ibitoye S.O. 
Published: April 2021

Abstract
Chips formed during machining are a vital instrument for the assessment both of machinability of material and the effectiveness of the machining method adopted. Various approaches have been proposed by researchers to make machining Ti-6Al-4V easier, ranging from reduction of cutting speed and feed rate to the use of coolant during machining. In this study, investigatation of the effect of refrigerated soluble oil on machinability of Ti-6Al-4V via monitoring of the chips formed during the various machining processes was carried out. The chips formed for various machining conditions were collected using a designed chip receptor medium and was analyzed using a metallographic microscope with an attached stylus. The experiment was planned using central composite designs (CCD) of the Response Surface Methodology (RSM) resulting in a 20 experimental run plan for dry and wet machining. Machining factors considered were cutting speed, feed rate, depth of cut and coolant temperature with corresponding values 40-120 m/min, 0.05-0.20 mm/rev, 0.2-1.0 mm and 5-11°C respectively. Responses monitored chip thickness, tooth profile and peak height. The effect of various factors on responses were discussed. Basically, results show that chip diameter increased with an increase in cutting speed. However, the sawtooth profile on chip reduced with an increase in cutting speed. It was therefore concluded that coolant temperature has an effect on chip morphology during machining of Ti-6Al-4V using refrigerated coolant.
Evaluating the Drying Characteristics of Paddy Rice Using Superheated Steam Dryer
Authors: Ojediran J.O , Adewumi A.D , Oladele S.O , Moses Olumuyiwa , Olayanju A , Okonkwo C 
Published: April 2021

Abstract
It has been recorded in literature that superheated steam has the ability to combine the parboiling operation (steaming and drying) of paddy (Oryza sativa - UPL1) rice into a single unit. According to literature, this process has not been fully explored and implemented in rice processing. In this research work, superheated steam dryer was used to parboil (steam and dry) paddy rice. Soaking time and temperature used was 12hours at 60°C, with steaming time ranging from 10 to 24mins, while the drying conditions used were; temperature (160, 170 and 180°C), bed depth (1, 3 and 5cm) and tempering time (20 and 40 minutes). In addition, paddy rice was dried from initial moisture content ranging from 26-43% (d.b) to a final moisture content of 2 – 8% (d.b). It was observed that the milled rice yield ranged from 71.32 to 94.5%, head rice yield ranged from 70.5 and 90.6%, broken rice ranged from 3.2 to 7.7%, chalkiness ranged from 3.4 to 10.6% and drying capacity ranged from 0.1 to 0.36kg/h. The results obtained shows that drying with superheated steam can be used to improve rice quality.
Fractal characterization of conductive Ag/flexible 3D printed PLA
Authors: Mwema F.M. , Adediran A.A. , Akinlabi E.T. , Adeleke A.A. , Olayanju T.M.A. 
Published: April 2021

Abstract
In this paper, thin and flexible PLA plates were prepared through FDM printing process. The traditional FDM process was adopted at predetermined optimal printing parameters of the 3D printer. The CAD designs of the samples were built on SpaceClaim modeler (ANSYS® 2019). The slicing and generation of the toolpath (gcodes) were undertaken in Cura software whereas the printing undertaken using a Desktop 3D printer (WANHAO Duplicator D10). The flexible PLA samples were designed for conductivity in smart devices; as such, they were coated with microfilms of highly conductive silver paint through a dipping method. The dipping was carefully undertaken in which the samples could soak inside the paint for 40 seconds and then removed and allowed to dry in vacuum desiccators for 12 hours. The samples were then heat treated at varying times (0, 10 and 20 minutes) in an oven at a constant temperature of 100°. The samples were then profiled using atomic force microscopy to obtain the microroughness characteristics of the Ag/PLA surfaces. The height features as well as spatial roughness characteristics were obtained through mono-fractal and multifractal approaches. The influence of heat treatment times at the reported temperature is shown to significantly shown to influence the spatial roughness characteristics of the 3D printed flexible samples.
Control of Fossil Fuel Gas Operating Conditions on the Performance of Carbon Dioxide Capture Process
Authors: Letsholo I. , Moropeng M.L. , Mavhungu A. , Agboola O. , Fayomi O.S.I , Moropeng R.C. 
Published: April 2021

Abstract
The emission of Carbon dioxide (CO2) from combustible flue gases is now seen as the key instrumental factor to global warming. The process of post-combustion capture from industrial flue gases via reactive absorption have the capability of substantially reducing the emissions of the greenhouse effect. This paper presents the modelling and simulation of flue gas conditions for carbon dioxide capture process utilizing post-combustion process. The obtained models were simulated using SCILAB 5.5.2 code based software. The results shows a good relevance of the modeling procedure with the fact that the volumetric flow rate of the flue gas and the Amine temperature governs the dynamics of CO2 absorption at the bottom region of the column. It is also noted in the findings that the increase in the volume of the flue gas gives rise to the concentration of CO2 at low temperatures.
Hand Gesture Recognition-Based Control of Motorized Wheelchair using Electromyography Sensors and Recurrent Neural Network
Authors: Adebayo O. O. , Adetiba E. , Ajayi O. T. 
Published: April 2021

Abstract
Mobility has been identified to be a major characteristic of living things. Humans who are deprived of efficient mobility either by natural or man-made factors loose significant relationship with their environment. The growing demand to produce effective rehabilitation devices for the aged population and disabled individuals, have spurred us to develop a reliable and easy to use biosignal based auto control wheelchair. This is to ensure independent mobility of persons with disabilities and the aged. In this paper, a Recurrent Neural Network (RNN) architecture called Long Short Term Memory (LSTM) is engaged for the classification EMG signals to the corresponding hand-gesture category. The LSTM model in this study yielded a validation accuracy that provides a basis for an improved solution towards real-time deployment.
Sustainability and Clean Technology: A Technological Perspective
Authors: Fayomi G.U. , Mini S.E , Fayomi O.S.I. , Odunlami A. , Oyeleke O.O. 
Published: April 2021

Abstract
Sustainability and the need to ensure sustainable development is an ever important issue in this present age and time, owing to the ever increasing demand for the earth’s resources, coupled with an increase in human population, human demand for rapid industrialization and the demand for energy, these have all led to adverse negative impact on the immediate environment, as a result of the strain imposed on the environmental limits of the earth’s carrying capacity. A thin line needs to be drawn, and this paper seeks to provide a comprehensive review on the subject matter of sustainability, including the different dimensions and the cross-disciplinary views on sustainability, the interdependence and inter-relationships between these dimensions, human effort in ensuring sustainability across all facets, the development of the sustainable development goals, and the challenges faced in the actualization and implementation of these goals. The achievements of the sustainable development goals were examined as well as the possible trade-offs resulting from limited resource use in the SDGs, the role of technology was also examined and how modern science and innovation can be used in driving our sustainable future.
A concise overview on optimization and modelling parameter cases in electrodeposition and composite coating technology
Authors: Ajayi-Majebi J. , Abioye O.P , Fayomi O.S.I. , Oyedepo S.O. , Ayara W.A. 
Published: April 2021

Abstract
Electrodeposition technology often uses the principles of electrolysis to modify the deposition of coating material on a metal surface. Numerical modelling can be used to quickly carry out modelling and optimization of these coating and resultant corrosion study processes. This allows researchers to perform a detailed analysis of a model created to simulate, analyze, and optimize the electrodeposition process. This research provides several more efficient methods of studying and optimizing anti-corrosive coating development processes and the critical parameters involved.
Evaluation and Prediction of Energy Content of Municipal Solid Waste: A review
Authors: Adeleke O.A. , Akinlabi S.A. , Jen T. C. , Dunmade I. 
Published: April 2021

Abstract
Researches in the literature have unveiled the potential of resource and energy recovery from waste, it can therefore no longer be regarded as trash. This study reviews the literature to evaluate and analyses studies which estimated the experimental heating value of waste and the theoretical energy potential recoverable from waste through thermochemical and biochemical routes at different case studies. It was observed in this study that most developing countries are not exploiting the full potential of energy recoverable from waste. Models developed to predict the energy content of municipal solid waste (MSW) based on the elemental analysis, proximate analysis and physical composition were evaluated. A comparative analysis of the energy prediction models was also done. Artificial neural network (ANN) and multiple linear regressions found more applications in energy prediction. Energy prediction based on ultimate analysis using the elemental composition of the waste was predominant and are the most accurate; while proximate analysis based predictions were the least. The prediction accuracy of ANN is greater than the linear regression in the forecast of the energy content of MSW. However, a major limitation in the use of these modelling techniques was identified. Most of the generalized models may not capture the peculiarity of the waste generated at a particular place or municipality and therefore may not be very accurate for specific applications at some municipalities.
Influence of Livelihood Assets on Attitude Towards Solid Waste Sanitation: A Case of Okobaba, Lagos, Nigeria
Authors: Alagbe Edith Egbimhanlu , Alagbe Olusegun Adegboyega , Sophia Okocha Dumebi , Ojewumi Modupe Elizabeth , Ayeni Augustine Omoniyi 
Published: April 2021

Abstract
Land form, management policy and socio-economic characteristics have been identified as factors responsible for poor solid waste management. This study examined the influence of livelihood assets on waste sanitation/disposal behaviour in Lagos Metropolis: a case study of Okobaba. A multi-stage sampling procedure was used to obtain data for analysis. From the data collected and analyzed descriptively, efforts were made to identify and examine the respondents’ socio-economic characteristics, waste sanitation characteristic, livelihood assets and the connection between livelihood assets and waste sanitation behaviour of people in the area under study. The research result established the existence of variations in the waste disposal characteristics of respondents in the area under study. Therefore, it is recommended that a deliberate policy to provide livelihood assets or conditions that will improve access to better livelihood capacity, adequate for low-income households to meet their basic psychological livelihood needs. This is imperative in ensuring attitudinal change towards waste management and advancement to a second-order need like environmental sanitation.
Mathematical Description of the Flow Dynamics of Sand, Crude Oil and Water in an Oil Well
Authors: Sanni E.S , Adefila S.S , Anozie A.N , Agboola O , Emetere E.M , Okoro E.E , Ndubuisi A 
Published: April 2021

Abstract
The flow of particulates and fluids from a reservoir has been described using different models. However, obtaining one model that has the capacity to simulate all the phenomena existing in a horizontal oil well may be very difficult. The model described here is very flexible and has the capacity to integrate the essential parameters necessary to give a detailed description of the flow phenomenon. Furthermore, clear descriptions of the flow dynamics, threshold and critical velocity estimation of the components that make up the phases have been attempted in this paper. Within the model’s high level of accuracy, the unsafe limits for incipient sand deposition and bed load transport were estimated to be drag forces of 8.938* (10-8-10-10 kgm/s2) as well as threshold and critical velocities of 0.0445 and 0.0134 m/s respectively for Reynolds number in the region of 300-1000. The findings of this study will aid upstream petroleum engineers in avoiding situations that will lead to critical/laminar flows which can in turn cause sand bed formation or bed load transport which can in turn lead to pipeline blockage and loss of productivity.
Characterization of Modified Crumb rubber Interlocking Paver
Authors: Adeboje A. O. , Modupe A. E. , Fadugba O. G. , Busari A. A. 
Published: April 2021

Abstract
Interlocking pavers, otherwise called paving blocks, brick pavers or concrete paver blocks are produced from bricks or concrete blocks and are used for paving the exteriors of buildings and surfacing of driveways, floors, paths, patios, pool decks and walkways. Interlocking paving units have been successfully used worldwide for the surface of roadways and have adequately carried traffic loads without failure or deterioration. This study investigated the impacts of 2, 4 and 6 % replacement of sand with crumb rubber on the engineering properties of the interlocking pavers in order to produce a sustainable and environmental friendly interlocking paver. For the control sample the mix ratio was 1:1.38: 2.73 for cement, sand and coarse aggregate, respectively. The mixes had a water cement ratio of 0.4. The experiments conducted on cement were chemical composition, standard consistency and setting time. The tests carried out on the aggregates included chemical composition, sieve analysis, humidity content and specific gravity. The test conducted on the interlocking paver blocks were slump, bulk density and compressive strength. The study revealed that the cement had a standard consistency of 25%, initial setting and final setting time of 28 and 246 minutes, respectively. The major oxide compositions of cement were Calcium Oxide (CaO) and Silicon Dioxide (SiO2) with 60.38 and 20.8% constituent, respectively. The fineness modulus of the sand, crumb rubber and granite samples was 2.54, 1.50 and 2.35, respectively. The density and compressive strength decreased at each of the ages of curing (3, 7, 28 and 56 days), as the crumb rubber content in the interlocking pavers increased. Though the mechanical properties of the modified crumb-rubber interlocking pavers reduced, the interlocking pavers can still be used for low trafficked roads and as kerbs on the highway.
Generation of Typical Meteorological Year Data for a City in South-Western Nigeria
Authors: Oyedepo S. O. , Oyebanji J. A. , Ukponu S.N. , Kilanko O. , Babalola P. O. , Fayomi O.S.I. , Dirisu J.O. , Olawole C.O. , Leramo R.O. , Dunmade I.S. , Efemwenkiekie U.K. , Shopeju O.O. 
Published: April 2021

Abstract
Weather data is essential in determination of the performance of energy systems such as HVAC and solar energy systems. Weather data therefore, can be employed in designing more energy-efficient systems. This work focuses on the generation of a Typical Meteorological Year (TMY) Data for Abeokuta (7°7′1″ N, 3°22′13″E), a state in South-Western Nigeria by the use of a modified Sandia method. It makes use of seven weather parameters obtained over 29 years (1984 - 2012) in the construction of the TMY. Sandia method is highly affected by solar radiation even if its weight is reduced by half. The weights of other parameters such as temperature, wind, and relative humidity have less impact on the selection of TMY. The results of this study show that the weather pattern of Abeokuta follows the general diurnal variation of dry/harmattan season and wet/rainy season, typical to Nigeria. In this work also, the effect of general rise in temperature and solar radiation, indicative of global warming, is highlighted. Higher solar radiation values are majorly typical of a low cloud cover, and high clearness index. Suggestions were also made as to the preferable type of sustainable energy system to make use of in this location, as well as in the development of energy systems and data collection in Nigeria. The relevance of this work is that it would help to strengthen building energy standards, understand the local climate of Abeokuta and hence facilitate building energy system performance.
Bio-Agro Waste Valorization and its Sustainability in the Industry: A Review
Authors: Afolalu S. A. , Salawu E.Y. , Ogedengbe T.S. , Joseph O. O. , Okwilagwe Osise , Emetere M. E. , Yusuf O. O , Noiki A.A , Akinlabi S.A 
Published: April 2021

Abstract
The application of bio-agro waste in industrial production has become extensive. Many industries have embarked in large scale production due to the broadness in the application of the bio-agro waste. This study vividly and succinctly surveyed the different bio-agro waste, its areas of application and its sustainability in industrial production. Several examples of bio-agro waste have been reported. Their relevance in bio-ethanol production has equally been discussed. More so, current research and development in harnessing the bio-agro waste were equally reported, to achieve better economic sustainability. Thus, the study has provided a new circular economic method for addressing the problems associated with bio-agro waste.
A review on electrical bulbs and its improvement over time: Saving energy or life?
Authors: Emetere M.E. , Bologi L.P. , Sanni S.E. , Chidi O.R. , Femi-Pidan D. , Okoro E.E. 
Published: April 2021

Abstract
Electric bulb technology evolved over the decades with striking innovations and a corresponding shortcoming. The paper examines the pros and cons of the different bulbs available in the market. It was observed that all bulbs had their unique advantage and disadvantage. However, the review showed that some of the shortcomings can be overcome. Hence, it is possible to relate with either the old and new bulb technology without many environmental hazards and technical errors. It was also observed that the health hazards in the compact fluorescent lamps (CFLs) and light-emitting diodes (LEDs) can be modified to drastically reduce its health hazards. Salient recommendations were made to aid researcher for further work.