Department of Mathematical Sciences

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Browsing Department of Mathematical Sciences by Author "Oladipupo Olayinka Olusegun"

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    Application of Response Surface Analysis of Three Factors of Fertilizer Treatment Combination to Determine the Optimum Plant Height of Maize
    (International Journal of Innovative Science and Research Technology, 2023-04-27) Oladipupo Olayinka Olusegun
    This study evaluated how three different fertilizer treatment combinations affected plant height. For specific variables or characteristics that can be taken into account, the optimal plant height is calculated using the first and second-order models of the Responsive Surface Methodology. According to the study's p-value of 0.087 for lack of fit, the Ho cannot be entirely discounted. Thus, there is no proof that the response surface lacks curvature or is poorly fitted. The interaction between 100 kg/ha of poultry manure (P/M10), 50 kg/ha of organic minerals (O/M5), and 50kg/ha of poultry manure (P/M5) is shown by the main effect plot, contour plot, and surface plot to be significant at the level of 0.05. Moreover, poultry manure at 50 kg/ha (P/M5), which spreads the longest, has the highest impact at 100 kg/ha (P/M10) and organic mineral at 50 kg/ha (O/M5). With the use of a Pareto chart, that serves as the reference line. The ideal values for the response variable for a specific location with the accompanying expected response plant height are 101.31cm and a composite desirability of 0.996269 to achieve the ideal plant height. The findings of this study demonstrate the potential of response surface analysis as a tool for optimizing fertilizer treatment combinations for the growth of maize. By identifying the optimal combination of fertilizer treatments, farmers can maximize the yield and quality of their maize crops, while minimizing the cost and environmental impact of their fertilizer use.
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    Exploring the Factors and Effects of Students’ Loyalty to Mobile Network Providers in Lagos, Nigeria: An Investigative Study
    (Asian Journal of Probability and Statistics, 2025-04-14) Oladipupo Olayinka Olusegun
    This study explores the relationship between students' mobile network usage for academic purposes and their loyalty to mobile network providers in tertiary institutions in Lagos. Findings reveal that the majority of respondents (62%) are female, aged between 17–22, and actively engage with mobile internet for academic activities. The study highlights students' academic performance correlates with mobile internet access, with 51.4% achieving a Second – Class Upper grade and 15.1% attaining First Class. Parental education plays a crucial role in students' choice of mobile network providers, with higher-educated parents guiding their children's decisions more effectively. The analysis of mobile internet usage shows that 30.2% of students reported high usage for academic purposes, with 23.5% indicating very high usage. Key activities include online lectures (38.4%) and research, emphasizing mobile internet’s role in academic engagement. Regarding loyalty, 42.6% of students’ associate loyalty with retention, while 23.8% believe recommendation plays a role. MTN emerges as the preferred provider (35.1%), while GLO (16.8%) and IpNX Nigeria (2.2%) have lower preference rates, highlighting network coverage and service quality as critical factors. Psychological and environmental variables influence students’ loyalty to mobile networks, with 68% satisfied with network coverage and 65% valuing customer support. Ordinal regression analysis indicates that age, gender, marital status, and mobile network provider impact academic performance and loyalty. These findings underscore the importance of expanding network coverage, improving efficiency, and enhancing customer service to support students' academic success and foster long – term loyalty to mobile network providers in Lagos.
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    Modelling Trends of Hepatitis E Infection
    (Asian Journal of Probability and Statistics, 2025-03-26) Oladipupo Olayinka Olusegun
    Background: Hepatitis E is prevalent in many individuals, particularly in developing regions. While the infection often results in a self-limited, acute illness, it has a high likelihood of progressing to a chronic condition. Chronic infections can occur in pregnant women, individuals with weakened immune systems (such as the elderly, those with underlying illnesses), and especially in individuals who have undergone solid organ transplants. Methods: A comprehensive literature search on viral hepatitis E in children attending primary, secondary, and higher schools was conducted using various search terms. The focus on schools stems from the assumption that educational institutions should possess greater awareness of viral hepatitis E. A mathematical model was developed to describe the dynamic transmission of the virus, and sensitivity analysis was performed to assess the model's responsiveness to different parameters. Results: The results indicate that oral consumption is the primary mode of transmission, especially in higher education settings. Sensitivity analysis demonstrated positive influences of all parameters associated with infection pathways. By utilizing the mathematical model of dynamic transmission, the projected infection rate can potentially be mitigated. Conclusion: In conclusion, the projected infection rate as indicated by the model can be mitigated through the application of the dynamic transmission mathematical model. Implementing a range of strategies for targeted or widespread vaccination stands as a potent intervention for the improvement of public health
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    Reliability of Mobile Service Provider Selection by Tertiary Institution Learners in Nigeria
    (International Journal of Creative Research Thoughts, 2024-06-06) Oladipupo Olayinka Olusegun
    The paper concentrates on the necessity to investigate and determine which of the many influencing factors affects students' selection of mobile service providers. The evaluation of data and description were done using statistical techniques such bar charts, pie charts, line charts and frequency approaches involving Likert scale methodology. According to the study's findings, 51% of the respondents were male students while 49% are female students. Furthermore, majority of the respondents chose MTN network with 40% followed by Airtel network with 30% respectively. Ultimately, Coverage and Network Quality, Data Roller, Device Compatibility, Students Offers and Discounts, Data Speed, Flexibility of Plans and Cost and Pricing Plans are the most significant components that influenced learners’ choice of mobile service provider for educational and other academic desires.