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Recent Submissions

Effects of Recycled Concrete Dust on the Behaviour of Hot Mix Asphalt
(Journal of Engineering and Technology Management, 2026) Oyedepo Olugbenga Joseph
The increasing demand for sustainable pavement materials has encouraged the utilization of construction and demolition waste in asphalt mixtures. This study investigated the effects of recycled concrete dust (RCD), derived from demolished concrete, on the behaviour and performance of hot mix asphalt (HMA). The RCD was used as a replacement for conventional stone dust filler at proportion of 0%, 25%, 50%, 75%, and 100% using the Marshall mix design method in accordance with relevant ASTM standards. The performance of the mixtures was evaluated in terms of Marshall and volumetric properties, rutting resistance, cracking and moisture damage resistance. Results show that the OBC increased consistently with increasing RCD content due to the lower specific gravity and cementitious nature of RCD, with statistical analysis confirming the significance of this effect. The Marshall and volumetric analysis revealed improved mixture densification up to 75% RCD replacement, as evidenced by higher bulk density, reduced air voids, lower VMA, and increased voids filled with bitumen. Marshall test results indicated that moderate RCD replacement (25–50%) enhanced stability. Flow values decreased with increasing RCD, indicating stiffer mixtures without exceeding specification limits. Rutting resistance, assessed using the Marshall Quotient, improved substantially with increasing RCD content, demonstrating enhanced resistance to permanent deformation. Conversely, indirect tensile strength results showed a reduction in value at higher RCD contents, attributed to increased mixture stiffness. However, moisture susceptibility performance improved with RCD incorporation, with most RCD-modified mixtures exhibiting tensile strength ratio values above 75%, indicating strong resistance to moisture-induced damage. Overall, the findings demonstrate that recycled concrete dust can be effectively used as a sustainable filler in hot mix asphalt. The study supports the adoption of RCD in asphalt pavement construction as a viable approach for enhancing sustainability and reducing environmental impacts.
THEOLOGY OF SCIENCE AND INNOVATION
(Redeemer's University Directorate of General Studies Programme, 2026) Salifu Gabriel
Signal-to-Noise Ratio Optimization in 5G Network Architectures using the Pelican Optimization Algorithm
(FUOYE Journal of Engineering and Technology, 2025) Omodeni Hammed Babatunde
Modern fifth-generation mobile networks face significant challenges due to increasingly densely populated locations, which result in limited coverage and lower performance due to congestion, interference bottlenecks, and service quality variations. The introduction and operation of 5G technology presents issues as a viable option for connecting highly populated areas. A unique 5G network structure must be devised to serve highly populated locations, as it will optimize coverage while expanding capacity, as well as improve interference control and service delivery. POA is well-suited for solving complicated optimization issues with more computational efficiency, lowering processing time or resource utilization, and thereby improving complex data management. The performance study revealed that implementing the pelican optimization algorithm enhanced the signal-to-noise ratio over current approaches such as genetic algorithm, PSO, TLBO, and GWO. Modified network architecture for high-density subscribers would be developed using the pelican optimization algorithm, which efficiently explores complex solution spaces, handles multiple objectives, and prevents premature convergence, thereby indicating significant improvement of the signal-to-noise ratio of the modified model, which shows an improvement in the quality of service for high-density subscribers, which is limited to concurrent users of mobile networks. This model's small cell equipment operates at a frequency of 28 GHz with a bandwidth of 700 MHz, supporting 3.5 million concurrent users within the allocated area. The main criterion for evaluating network performance will be userreceived power levels
Beyond Western paradigms: exploring the intersection of Igbo cultural belief and entrepreneurship
(Taylor and Francis, 2026-08-06) Dare Ojo, Omonijo
Long before scholars in developing nations began emphasizing the role of culture in entrepreneurship, Western-centric discourse dominated the global academic landscape, positioning Western cultural factors as the universal standard for entrepreneurial suc cess. This dominance created a significant issue bother on over generalization of Western findings to vastly different contexts and the marginalization of culturally grounded explanations from the Global South. This paper offers a fresh perspective by examining the intersection of Igbo cultural beliefs and entrepreneurship in Southeast Nigeria, departing from traditional Western paradigms. The study identifies and explores six core cultural beliefs that foster human capital development and an ‘entrepreneurial spirit’ within Igbo society. Employing an exploratory research design and purpo sive snowball sampling, the study engaged N = 75 participants across three prominent markets in the Lagos metropolis: Ladipo, Idumota, and Alaba International. Findings reveal the unique con tributions of indigenous African belief systems to entrepreneurship. In due course, this research encourages other cultural groups to leverage their heritage for wealth generation and job creation, celebrating Africa’s rich cultural foundations as a viable pathway to poverty reduction
Exploring the role of sociodemographic factors in human capital development within Igbo business mentorship
(Discover Global Society, Springer Nature, 2026-09-04) Dare Ojo, Omonijo
This study investigates how sociodemographic factors influence human capital development within the indigenous Igbo business mentorship. While this apprenticeship model is a cornerstone of Nigeria’s economy, it has received limited scholarly attention. Using a qualitative approach with purposive and snowball sampling, we interviewed 75 entrepreneurs from three major Lagos markets: Ladipo Auto Spare Parts, Idumota, and Alaba International. Key findings reveal that early-age engagement is a critical predictor of entrepreneurial success, repositioning formal education. The results demonstrate that the apprenticeship system functions as a vehicle for “creative destruction,” where practical mentorship dismantles reliance on outdated educational structures. Furthermore, the study supports Social Capital Theory, showing that strong social networks are more vital to business growth than individual effort alone. Ultimately, this research challenges Western narratives of the isolated entrepreneur, confirming that communal support systems are the primary drivers of sustainable human capital development in this context.