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Design and Development of Effective Multi-Level Cache Memory Model Udoka, Eze Val Hyginus; Eze, Martin Chinweokwu; Edozie, Enerst; Eze, Esther Chidinma
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 5 No 2: September 2023
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0502.515

Abstract

An algorithm to determine the effectiveness and efficiency of a multi-level cache was developed in this paper. The developed model was used to test the efficiency rate, the relationships and the performance output level of a computer concerning the cache properties. This research paper showed that the level of cache and access time increases with the absolute hit rate but decreases with the relative hit rate. The number of cache levels varies directly with absolute access time and inversely with relative access time. The level one cache with set associativity of one has the highest access time and as the associativity and cache levels increase the memory access time decreases. The increase in the number of set associativity leads to an increase in cache performance and as well increases the performance speed of a computer.
Investigating the Viability of Rubber Crumbs from Waste Tyres as Partial Replacement for Coarse Aggregates in Concrete Uche, Chikadibia Kalu Awa; Eze, Val Hyginus Udoka; Kitaata, Paul; Chranimah, Muhereza; Ukagwu, Kelechi John; Barah, Obinna Onyebuchi; Edozie, Enerst
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 6 No 2: September 2024
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0602.616

Abstract

The number of waste tyres is on the increase, because of the growing use of transport vehicles. Almost one trillion waste tyres are generated in the world annually. Established methods of disposal, recycling and re-use of waste tyres have failed to keep pace with generation, proven to be ineffective, cost-intensive and in some cases environmentally unsustainable. This study aims to investigate the effects of utilizing crumbs from discarded rubber as a partial replacement for coarse aggregates in concrete. Rubber crumbs of 10 – 20mm nominal size were produced manually from waste tyres. The rubber crumbs were used to replace 10%, 20% and 30% of coarse aggregates in design concrete of 20N/mm2 target compressive strength. The effects of this material on the slump, water absorption and compressive strength of concrete were examined. The inclusion of rubber crumbs resulted in a decline in the slump of concrete up to 10% relative to the control specimen. Water absorption increased marginally at 10% replacement compared to the control specimen and recorded a maximum value of 0.77% with 30% replacement after 28 days of curing. The compressive strength of the concrete was negatively affected by the rubber crumbs. The maximum value of 13.9N/mm2 was attained at 10% replacement after 28 days of curing. Rubberized concrete with 10% replacement of coarse aggregates can be used for non-structural concrete members such as roof slabs, non–load–bearing partition walls, and roadside barriers. Chemical treatment of rubber crumbs to improve surface adhesion properties should be encouraged.
The Differences between Single Diode Model and Double Diode Models of a Solar Photovoltaic Cells: Systematic Review Udoka, Eze Val Hyginus; Umaru, Kalyankolo Umaru; Edozie, Enerst; Nafuna, Ritah; Yudaya, Nansukusa
Journal of Engineering, Technology, and Applied Science (JETAS) Vol 5 No 2: August 2023
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.jetas-0502.541

Abstract

This research paper systematically reviewed and investigated single diode model and double diode model of a solar photovoltaic systems in terms of accuracy, differences under major unknown PV parameters, different optimization and fabrication. This research paper reviewed the differences and the similarities between the single diode model and double diode model. From the review, it was clear that single diode model has less computation time and number of unknown parameters compared to double diode model. The double diode model on its own superiority is more accurate under solar shading condition effect than single diode model but single diode model performs better under high insolation levels. None of the two models is superior than the other but the solar photovoltaic modelers/installers should bear the solar irradiance of the environment before installation
Mobile Disinfectant Spraying Robot and its Implementation Components for Virus Outbreak: Case Study of COVID-19 Udoka, Eze Val Hyginus; Edozie, Enerst; Davis, Musika; Dickens, Twijuke; Janat, Wantimba; Wisdom, Okafor; Umaru, Kalyankolo; Nafuna, Ritah; Yudaya, Nansukusa
International Journal of Artificial Intelligence Vol 10 No 2: December 2023
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijai-01002.551

Abstract

The virus pandemic COVID-19 outbreak brought a huge pressure to the public healthcare system worldwide, especially in developing African countries like Uganda. The Educational system and institutions were put on a standstill due to no quick countermeasures to make the environment clean and safe for normal activities to continue. This paper successfully and comprehensively reviewed the Bluetooth and smart disinfectant spraying robot that successfully controlled the spread of the deadly virus. It also detailed different components that made up the complete spraying robot systems and from this it was observed that spraying robot systems are made up of almost the same components for implementations but differs on program that is embedded on the microcontroller due to different functions. This programing differs based on the functions that the designer/programmer wants the robot to do despite using almost the same components. This research review paper will act as guide for future researchers when designing and implementing a mobile spraying robot.
A Comparative Analysis of Renewable Energy Policies and its Impact on Economic Growth: A Review Eze, Val Hyginus Udoka; Edozie, Enerst; Wisdom, Okafor; Uche, Chikadibia Kalu Awa
International Journal of Education, Science, Technology, and Engineering (IJESTE) Vol 6 No 2: December 2023
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijeste-0602.555

Abstract

Renewable energy has been identified as a critical component of global efforts to address climate change, enhance energy security, and foster sustainable economic growth. As a result, many countries have implemented renewable energy policies to promote the development and deployment of renewable energy technologies. However, the impact of these policies on economic growth remains a subject of debate. This article provides a comparative analysis of renewable energy policies and their impact on economic growth. The study employs a systematic review of the literature and utilizes qualitative and quantitative methods to compare renewable energy policies and their economic impacts across different countries. The findings suggest that the impact of renewable energy policies on economic growth varies across countries and is influenced by factors such as policy design, institutional context, and economic structure. This research article finally, examined the challenges associated with implementing renewable energy policies, analyzed the implications of the findings for policymakers and further gave some potential solutions that will help the policymakers and future researchers.
A Critical Assessment of Data Loggers for Farm Monitoring: Addressing Limitations and Advancing Towards Enhanced Weather Monitoring Systems Eze, Val Hyginus Udoka; Okafor , Wisdom O.; Odo, Jonathan Ikechukwu; Ugwu, Chinyere N; Ogenyi , Ogenyi Fabian Chukwudi; Edozie, Enerst
International Journal of Education, Science, Technology, and Engineering (IJESTE) Vol 6 No 2: December 2023
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijeste-0602.593

Abstract

This comprehensive review examines thirty-nine data loggers and their associated literature, systematically critiquing their design and implementation. The integration of data loggers in farm monitoring proves cost-effective, enabling the simultaneous monitoring of multiple parameters without human intervention. The accrued data, when logged over time, contributes to more accurate weather predictions, empowering farmers to strategically plan for upcoming seasons. However, the review reveals a prevalent issue among existing data loggers: many cannot read and record various weather parameters concurrently, coupled with insufficient storage capacity. This limitation hinders their suitability for prolonged, unattended data storage. Additionally, a significant number of the reviewed data loggers lack long-range wireless data transmission capabilities, restricting effective weather monitoring from a distance. The findings underscore the need for researchers to focus on developing advanced long-range data logger systems with enhanced memory storage capacities to address these identified shortcomings.