Asian Journal of Information Science and Technology, 2024
This study was carried out to investigate Internet browsing and Web 2.0 competencies as correlate... more This study was carried out to investigate Internet browsing and Web 2.0 competencies as correlates of effective management of institutional repositories by librarians in federal universities in South-South Nigeria. Utilizing a correlational design, the study answered three questions and tested three hypotheses. The cohort of 242 librarians from seven federal universities-115 academic and 127 nonacademic-constituted the study's population. A stratified total census sampling approach was deployed to include all 242 librarians. Data gathering utilized two questionnaires: the "Librarian Internet Browsing and Web 2.0 Competencies Questionnaire (LIBWCQ)" and the "Effective Management of Institutional Repositories Questionnaire (EMIRQ)." Both tools were validated for face and content by experts and yielded Cronbach Alpha reliability coefficients of 0.75 and 0.77, respectively. Mean scores addressed the research questions, while regression analysis tested the hypotheses at a significance level of 0.05. Results indicated a 52% joint correlation between the librarians' web competencies and effective management of repositories, notably in activities like social media engagement and collaboration with faculty and students using the digital space. The study concluded and recommended that librarians should bolster their digital skills through professional development initiatives, such as workshops, webinars, and conferences, focusing on digital management and Web 2.0 tool application to keep up-to-date with technological advancements and best practices in the management of institutional repositories.
This study investigated the influence of health education on physical exercise in alleviating low... more This study investigated the influence of health education on physical exercise in alleviating low back pain among patients in Rivers State, Nigeria. The study utilized a pretest-posttest quasi-experimental design and involved 170 patients at the University of Port Harcourt Teaching Hospital. Two objectives were set, along with corresponding research questions and hypotheses. The participants were selected using convenience and stratified sampling techniques, resulting in a cohort of 50 individuals consisting of 35 patients from the general outpatient clinic department and 15 patients from the spine physiotherapy unit. The group included 20 male and 30 female participants. Data was collected using a self-structured, selfadministered questionnaire titled physical exercise-focused health education in alleviating low back pain, which demonstrated good reliability (0.82). Descriptive and inferential statistics were employed to analyze the data and test the hypotheses. The study findings indicated that health education, with a focus on physical exercise (PEFHE) for low back pain patients, consistently improved mobility by enhancing respiration, reducing abdominal fat, strengthening muscles and increasing flexibility. More so, PEFHE significantly alleviated pain and stiffness among individuals with low back pain. In conclusion, the study recommends the implementation of comprehensive PEFHE programmes, fostering patient participation, conducting further research on long-term effects, and promoting collaboration among healthcare providers, educators, and policymakers to integrate these interventions into the existing healthcare system seamlessly.
This study investigated midwives' perspectives on staffing and development challenges impacting o... more This study investigated midwives' perspectives on staffing and development challenges impacting optimal midwifery in Rivers State primary healthcare centers. It utilized a descriptive survey design with a sample of 217 midwives selected through stratified total census sampling. Data was collected via the validated 'Midwifery Staff and Development Management Challenges Questionnaire' and analyzed using means, standard deviations and z-test. Key findings showed midwives disagreed that professional barriers cause shortages but agreed recruitment and retention are critical, though perspectives differed between full-timers and clinical staff. Existing mentoring programs were deemed insufficient and increased investments needed to enhance skills and tackle practice challenges. The study concluded that despite diverging opinions on causes, midwives collectively concur that strengthening staff numbers and development opportunities is vital for optimal midwifery practice. Targeted, evidence-based workforce initiatives are recommended, but a comprehensive strategy must also address underlying motivational, infrastructural and coordination issues using systems-thinking. Suggestions include objective workload analysis, outcome assessments, service user feedback, and collaborative mechanisms between midwives, administrators and policymakers to enrich understanding and tailor interventions.
JOURNAL OF INFORMATICS AND INNOVATIVE Vol. 6, Issue 2, 2024TECHNOLOGIES (JIIT), 2024
This study investigated integrity and punctuality as correlates of effective service delivery in ... more This study investigated integrity and punctuality as correlates of effective service delivery in academic library of a government -owned university. Conducted at the Donald E.U. Ekong Library, University of Port Harcourt, 35 participants, including 21 library professionals and 14 para-professionals, were surveyed using the "Library Staff Integrity and Punctuality Questionnaire" and the "Effective Service Delivery in Academic Library Questionnaire." The research highlighted the crucial role of integrity in ensuring proficient service delivery and a strong correlation between punctuality and effective service delivery. Timely user consultations, cooperative service delivery, prompt item returns, and transparent communication were identified as examples of this correlation. The study emphasized the significance of ethical standards, punctuality, user responsiveness, data protection, and accountability for library resources in influencing effective service delivery. Recommendations included implementing structured scheduling for user consultations and holding regular staff meetings to enhance integrity and punctuality for improved service delivery. Keywords: Integrity, Punctuality, Ethical Standards, Library Staff, Academic Library
Svāsthya: Trends in General Medicine and Public Health, 2024
Background: Joint dysfunction and increased pressure on the spinal discs can also occur, leading ... more Background: Joint dysfunction and increased pressure on the spinal discs can also occur, leading to disc degeneration or herniation and further stressing the lower back. Objective: The study aimed to investigate the impact of health education on footwear practices in reducing low back pain among patients in Rivers State, Nigeria. Low back pain is a common issue that affects many individuals and can be influenced by various factors, including footwear choices. Methods: The study included a sample of 50 participants from the University of Port Harcourt Teaching Hospital (UPTH) consisting of 45 individuals with nonspecific low back pain and 5 patients diagnosed with spinal stenosis. Participants were selected using stratified and non-proportional sampling techniques from a population of 170 individuals at UPTH. The Health Education Impact on Footwear Practices and Low Back Pain Questionnaire (HEIFPLBPQ) was used as the main instrument. Descriptive and inferential statistics were employed to analyze the collected data. Results: The findings indicated that the health education intervention programme had a significant impact on both footwear practices and the reduction of low back pain among the patients. Participants gained knowledge about important factors such as body mass index, comfort/style, foot morphology, and affordability. Comfort/style was a priority for 40% of the participants, while 90% emphasized affordability in their footwear choices. The health education programme led to improvements in pain experiences, including decreased pain intensity and discomfort, as well as a reduction in pain exacerbation during ambulation. Conclusion: It was concluded that the health education programme resulted in notable improvements in pain experiences, including decreased pain intensity and discomfort, as well as a reduction in pain exacerbation during ambulation. It was recommended that to effectively address the needs of patients with low back pain, healthcare professionals and policymakers should customize health education interventions on footwear practices.
BRICS Journal of Educational Research | April-June 2024 | Vol - 14 | Issue - 2, 2024
This study investigated digital literacy of Librarians in federal universities in South-South, Ni... more This study investigated digital literacy of Librarians in federal universities in South-South, Nigeria for effective management of institutional repositories. Two objectives and corresponding research questions were used, with a descriptive survey design applied. The target population was 242 Librarians from seven federal universities in six states. A total census sampling technique was used, and the research instrument was the "Digital Literacy and Institutional Repositories Management Questionnaire (DLIRMQ). Experts validated the questionnaire, with a reliability coefficient of 0.78. Mean and Standard Deviation were used for analysis. The findings showed proficiency in open access publishing platforms, teaching researchers to use the institutional repository, and digital communication. However, there were gaps in familiarity with coding, search engine optimization, and digital marketing. The study concluded that Librarians' digital literacy is crucial for managing institutional repositories, recommending targeted training programmes to bridge the identified gaps. Keywords: Digital Literacy, Librarians, Managing Institutional Repositories, Effective management, Federal Universities.
The need for renewable energy sources in addressing global energy demands is growing, especially ... more The need for renewable energy sources in addressing global energy demands is growing, especially in Nigeria where electricity demand often exceeds supply. Solar photovoltaic (PV) systems have become a viable solution, with federal universities in Nigeria, as major electricity consumers, recognizing their potential. However, determining the right size of PV systems for individual faculties within these universities is a complex task. This study attempted to simplify this process by introducing an innovative approach to size PV systems in these faculties. The research method used the Extended Kalman Artificial Neural Network (EKF-ANN) and the Crow Search Algorithm (CSA) to enhance the accuracy of PV system sizing. Data was collected on the study site, load demand, weather conditions, system components, and operational control and systems models to establish sizing criteria. The study focused on the optimal size of a solar PV system at the Faculty of Law building, University of Port-Harcourt, and how to improve its accuracy. The results showed that using global solar insolation parameters, EKF-ANN predicted values for global temperature, flock size, and maximal iteration. This optimized system could generate surplus power for effective grid supply. The study found that the optimal size of the series-connected panels for the Faculty of Law building was 96, 83, 73, and 65 units, with corresponding insolation values ranging from 3.737 to 4.368 kW/m 2. It was concluded that the combination of CSA and EKF-ANN in solar PV sizing is suitable forachieving optimal outcomes for energy storage and grid supply. Nonetheless, the study recommended additional investigation into real-time and grid-connected solutions to enhance the proposed approach's effectiveness.
Journal of Computational Mechanics, Power System and Control, 2024
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towa... more Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Resbee Publishers Journal of Computational Mechanics, Power System and Control, 2023
The lithium-ion battery (LIB) technology is getting particular attention because of its effective... more The lithium-ion battery (LIB) technology is getting particular attention because of its effectiveness in small-scale-electronic products such as watches, calculators, torchlights, or mobile phones through to large-scale power systems such as automobiles, trains, ships, submarines, or airplanes. LIBs are widely applied due to their advantages which make them unique. They exhibit greater energy density than other types of rechargeable batteries. LIBs are lightweight with a limited rate of charge loss, a greater number of charge/discharge cycles, no complete discharge is needed, and LIBs function at a higher voltage than other rechargeable batteries. However, LIB is suffering from many disadvantages such as the high risk of bursting, high cost compared to other batteries, battery deterioration after a complete discharge, high sensitivity to high temperatures (fast degradation when exposed to heat), poor rate of capability, very limited lifespan (2-3 years) and not available in standard cells sizes like others. Basic science research combining solid-state chemistry and physics has been at the heart of this endeavor, particularly throughout the 1970s and 1980s. With the awarding of the 2019 Nobel Prize in Chemistry to the creation of lithium-ion batteries, it is instructive to examine the evolution of cathode chemistry that enabled modern lithium-ion technology. A good choice of cathode materials leads to enhanced performance in LIBs. This work involves a deep comprehension of Li-ion transport, as well as the mechanism of charge and discharge in LIBs. The paper provides a fundamental study on layered, spinel, and olivine-based cathode materials and their benefit for LIBs. The study also gives details about optimization techniques needed to improve the cathode performances. The advantages and disadvantages of these prominent cathode materialsfor rechargeable LIBsare also discussed to emphasize the importance of choosing and/or optimizing the right cathode materials to lead to enhanced LIB performance.
Journal of Computational Mechanics, Power System and Control, 2024
As the demand for renewable energy continues to rise, it becomes crucial to discover effective wa... more As the demand for renewable energy continues to rise, it becomes crucial to discover effective ways to enhance grid-connected photovoltaic (PV) battery energy storage systems. The Institute of Petroleum Studies (IPS) complex at the University of Port Harcourt in Rivers State, Nigeria, embarked on a quest to determine the optimal approach for optimizing their PV battery energy storage system. This research aimed to fulfill this need by employing a diverse research methodology, incorporating the innovative MOALO theory. To begin with, the research gathered primary and secondary data to construct models for the power grid, solarPV, and battery. Furthermore, it meticulously analyzed the load profile of the IPS complex, at the University of Port Harcourt. Leveraging the power of the MOALO theory.The researchers accurately sized the system and evaluated the potential outcomes of simultaneously interconnecting all loads. To gauge the system's performance, there was a calculation of various parameters such as economics, random walk, boundary conditioning, entrapping ants, and ant trap development. Remarkably, the outcome showed that the fitness responses between the two trial runs, facilitated by the integration of MOALO, were strikingly similar, revealing a typical concaveconnected shape, which is characteristic of a multi-objective solver. The optimal multi-objective cost implication of the system was estimated to be around 4,300 USD, with a power mismatch performance of approximately-1.7819e+09. Based on these compelling findings, the study concluded that MOALO serves as an impressive optimization tool capable of minimizing power mismatches and optimizing costs. Moreover, it recommended the generation of excess power as a means to achieve sustainability.
Journal of Computational Mechanics, Power System and Control, 2024
This study was conducted to optimize the integration of solar-photovoltaic-distributed energy res... more This study was conducted to optimize the integration of solar-photovoltaic-distributed energy resources (SPV-DERs) within the Nigerian power system networks using an AI-based Particle Swarm Optimization (PSO) Algorithm. By employing a mixed research method, primary and secondary data were gathered to calculate flow analysis, NR method's equations, PSO's position update model, particle swarm optimizer algorithm, and application modeling including Solar-PV DER modeling. The AI-based PSO algorithm design was developed for optimizing SPV-DER integration in Nigerian power system networks, and key parameters and variables that needed consideration were identified. The study also established how the performance of the AI-based PSO algorithm could be evaluated and compared with other optimization techniques for SPV-DER integration within Nigerian power system networks. The study's results showed that voltage limits were within acceptable ranges, and solar power contributions were estimated at 880.10MW with 46,718 panels needed. The study concluded and recommended that investing in AI-powered tools for efficient power distribution; monitoring and resource optimization for sustainable energy sources would optimize performance and unleash Nigeria's sustainable energy potential.
Journal of Computational Mechanics, Power System and Control, 2024
This study was conducted to develop and evaluate the Optimal Poly-1-Order (OP-1) model for approx... more This study was conducted to develop and evaluate the Optimal Poly-1-Order (OP-1) model for approximating solar photovoltaic (PV) power generation. Using a mixed research method, the study employed Ibrahim's simulation and prediction of grid-connected PV system theory with two objectives and their corresponding research questions. The study gathered primary and secondary data to approximate the implementation of a solar-PV system with an OP-1 model for generating electricity: optimizing energy production, load demands, and financial viability in the medical hostel facility of the University of Port Harcourt, Rivers State, Nigeria. With the use of simulation and descriptive methods of data analysis, results showed that the lighting system had 400 lights, each with 12W power. It operated for a total of 18 hours. Daily power consumption was 36,400 Wh. More so, it showed that 60 fans with 100W power were used during the same hours, resulting in a daily power usage of 108,000 Wh. Based on a comprehensive economic evaluation, the OP-1 solar-PV system was found to be economically viable for powering the medical hostel. The system met electricity demand, resulting in a remarkable 407% ROI and substantial savings for the grid, despite a lower optimized size of 193kW compared to the base peak generation of 383.90k. The study concluded and recommended that the proposed OP-1 Solar-PV power plant can meet the facility's electricity needs with a peak generation of 383.90kW and detailed energy analysis. Deploying this efficient solar-PV setup guarantees reliable and green electricity for the Medical Hostel, slashing the campus's carbon footprint and grid reliance.
Journal of Computational Mechanics, Power System and Control
The inclusion of hydroelectric power is crucial to Nigeria's overall energy mix, playing a signif... more The inclusion of hydroelectric power is crucial to Nigeria's overall energy mix, playing a significant role in electricity generation. However, the Shiroro hydro plant, one of the main facilities located on the Kaduna River, is currently facing operational obstacles due to deteriorating infrastructure and inadequate maintenance practices. To overcome these challenges and improve efficiency within Nigeria's hydroelectric power sector, a hybrid-optimization approach has been proposed. This study sought to enhance the efficiency of the Shiroro hydro plant by implementing this innovative method. To achieve our objectives and address pertinent research questions, a mixed research method combining primary and secondary data was employed. The analysis included hydropower modeling and hydro-turbine input-output modeling. Three optimizer models, namely the particle swarm optimizer (PSO), Ant colony optimizer (ACO), and Artificial bee colony optimizer (ABCO), were utilized to formulate objective functions and task representations. The study involved comparing the daily output and fitness response of the Shiroro hydro plant through swarm optimizer iterations. The findings revealed a clear correlation between the turbine's power output and the water flow rate and water column height, suggesting that altering these factors could significantly improve the plant's performance. The comparison of the PSO, ACO, and ABCO models demonstrated that PSO and ABCO generated optimal or near-optimal solutions, while ACO produced suboptimal results. Consequently, the study concluded that enhancing the Shiroro hydro plant's output was feasible by increasing the water flow rate and column height. Additionally, the utilization of PSO and ABCO models proved to be an effective means of accurately predicting the turbine's output. As a result, the study recommended the integration of hybrid optimization techniques to monitor and identify any deviations in the Shiroro hydro plant's daily power output. This approach would enable prompt maintenance to be carried out, preventing significant damage to the plant. Ultimately, this research contributes valuable insights into improving the efficiency and performance of Nigeria's Shiroro hydro plant.
Asian Journal of Information Science and Technology, 2024
This study was carried out to investigate Internet browsing and Web 2.0 competencies as correlate... more This study was carried out to investigate Internet browsing and Web 2.0 competencies as correlates of effective management of institutional repositories by librarians in federal universities in South-South Nigeria. Utilizing a correlational design, the study answered three questions and tested three hypotheses. The cohort of 242 librarians from seven federal universities-115 academic and 127 nonacademic-constituted the study's population. A stratified total census sampling approach was deployed to include all 242 librarians. Data gathering utilized two questionnaires: the "Librarian Internet Browsing and Web 2.0 Competencies Questionnaire (LIBWCQ)" and the "Effective Management of Institutional Repositories Questionnaire (EMIRQ)." Both tools were validated for face and content by experts and yielded Cronbach Alpha reliability coefficients of 0.75 and 0.77, respectively. Mean scores addressed the research questions, while regression analysis tested the hypotheses at a significance level of 0.05. Results indicated a 52% joint correlation between the librarians' web competencies and effective management of repositories, notably in activities like social media engagement and collaboration with faculty and students using the digital space. The study concluded and recommended that librarians should bolster their digital skills through professional development initiatives, such as workshops, webinars, and conferences, focusing on digital management and Web 2.0 tool application to keep up-to-date with technological advancements and best practices in the management of institutional repositories.
This study investigated the influence of health education on physical exercise in alleviating low... more This study investigated the influence of health education on physical exercise in alleviating low back pain among patients in Rivers State, Nigeria. The study utilized a pretest-posttest quasi-experimental design and involved 170 patients at the University of Port Harcourt Teaching Hospital. Two objectives were set, along with corresponding research questions and hypotheses. The participants were selected using convenience and stratified sampling techniques, resulting in a cohort of 50 individuals consisting of 35 patients from the general outpatient clinic department and 15 patients from the spine physiotherapy unit. The group included 20 male and 30 female participants. Data was collected using a self-structured, selfadministered questionnaire titled physical exercise-focused health education in alleviating low back pain, which demonstrated good reliability (0.82). Descriptive and inferential statistics were employed to analyze the data and test the hypotheses. The study findings indicated that health education, with a focus on physical exercise (PEFHE) for low back pain patients, consistently improved mobility by enhancing respiration, reducing abdominal fat, strengthening muscles and increasing flexibility. More so, PEFHE significantly alleviated pain and stiffness among individuals with low back pain. In conclusion, the study recommends the implementation of comprehensive PEFHE programmes, fostering patient participation, conducting further research on long-term effects, and promoting collaboration among healthcare providers, educators, and policymakers to integrate these interventions into the existing healthcare system seamlessly.
This study investigated midwives' perspectives on staffing and development challenges impacting o... more This study investigated midwives' perspectives on staffing and development challenges impacting optimal midwifery in Rivers State primary healthcare centers. It utilized a descriptive survey design with a sample of 217 midwives selected through stratified total census sampling. Data was collected via the validated 'Midwifery Staff and Development Management Challenges Questionnaire' and analyzed using means, standard deviations and z-test. Key findings showed midwives disagreed that professional barriers cause shortages but agreed recruitment and retention are critical, though perspectives differed between full-timers and clinical staff. Existing mentoring programs were deemed insufficient and increased investments needed to enhance skills and tackle practice challenges. The study concluded that despite diverging opinions on causes, midwives collectively concur that strengthening staff numbers and development opportunities is vital for optimal midwifery practice. Targeted, evidence-based workforce initiatives are recommended, but a comprehensive strategy must also address underlying motivational, infrastructural and coordination issues using systems-thinking. Suggestions include objective workload analysis, outcome assessments, service user feedback, and collaborative mechanisms between midwives, administrators and policymakers to enrich understanding and tailor interventions.
JOURNAL OF INFORMATICS AND INNOVATIVE Vol. 6, Issue 2, 2024TECHNOLOGIES (JIIT), 2024
This study investigated integrity and punctuality as correlates of effective service delivery in ... more This study investigated integrity and punctuality as correlates of effective service delivery in academic library of a government -owned university. Conducted at the Donald E.U. Ekong Library, University of Port Harcourt, 35 participants, including 21 library professionals and 14 para-professionals, were surveyed using the "Library Staff Integrity and Punctuality Questionnaire" and the "Effective Service Delivery in Academic Library Questionnaire." The research highlighted the crucial role of integrity in ensuring proficient service delivery and a strong correlation between punctuality and effective service delivery. Timely user consultations, cooperative service delivery, prompt item returns, and transparent communication were identified as examples of this correlation. The study emphasized the significance of ethical standards, punctuality, user responsiveness, data protection, and accountability for library resources in influencing effective service delivery. Recommendations included implementing structured scheduling for user consultations and holding regular staff meetings to enhance integrity and punctuality for improved service delivery. Keywords: Integrity, Punctuality, Ethical Standards, Library Staff, Academic Library
Svāsthya: Trends in General Medicine and Public Health, 2024
Background: Joint dysfunction and increased pressure on the spinal discs can also occur, leading ... more Background: Joint dysfunction and increased pressure on the spinal discs can also occur, leading to disc degeneration or herniation and further stressing the lower back. Objective: The study aimed to investigate the impact of health education on footwear practices in reducing low back pain among patients in Rivers State, Nigeria. Low back pain is a common issue that affects many individuals and can be influenced by various factors, including footwear choices. Methods: The study included a sample of 50 participants from the University of Port Harcourt Teaching Hospital (UPTH) consisting of 45 individuals with nonspecific low back pain and 5 patients diagnosed with spinal stenosis. Participants were selected using stratified and non-proportional sampling techniques from a population of 170 individuals at UPTH. The Health Education Impact on Footwear Practices and Low Back Pain Questionnaire (HEIFPLBPQ) was used as the main instrument. Descriptive and inferential statistics were employed to analyze the collected data. Results: The findings indicated that the health education intervention programme had a significant impact on both footwear practices and the reduction of low back pain among the patients. Participants gained knowledge about important factors such as body mass index, comfort/style, foot morphology, and affordability. Comfort/style was a priority for 40% of the participants, while 90% emphasized affordability in their footwear choices. The health education programme led to improvements in pain experiences, including decreased pain intensity and discomfort, as well as a reduction in pain exacerbation during ambulation. Conclusion: It was concluded that the health education programme resulted in notable improvements in pain experiences, including decreased pain intensity and discomfort, as well as a reduction in pain exacerbation during ambulation. It was recommended that to effectively address the needs of patients with low back pain, healthcare professionals and policymakers should customize health education interventions on footwear practices.
BRICS Journal of Educational Research | April-June 2024 | Vol - 14 | Issue - 2, 2024
This study investigated digital literacy of Librarians in federal universities in South-South, Ni... more This study investigated digital literacy of Librarians in federal universities in South-South, Nigeria for effective management of institutional repositories. Two objectives and corresponding research questions were used, with a descriptive survey design applied. The target population was 242 Librarians from seven federal universities in six states. A total census sampling technique was used, and the research instrument was the "Digital Literacy and Institutional Repositories Management Questionnaire (DLIRMQ). Experts validated the questionnaire, with a reliability coefficient of 0.78. Mean and Standard Deviation were used for analysis. The findings showed proficiency in open access publishing platforms, teaching researchers to use the institutional repository, and digital communication. However, there were gaps in familiarity with coding, search engine optimization, and digital marketing. The study concluded that Librarians' digital literacy is crucial for managing institutional repositories, recommending targeted training programmes to bridge the identified gaps. Keywords: Digital Literacy, Librarians, Managing Institutional Repositories, Effective management, Federal Universities.
The need for renewable energy sources in addressing global energy demands is growing, especially ... more The need for renewable energy sources in addressing global energy demands is growing, especially in Nigeria where electricity demand often exceeds supply. Solar photovoltaic (PV) systems have become a viable solution, with federal universities in Nigeria, as major electricity consumers, recognizing their potential. However, determining the right size of PV systems for individual faculties within these universities is a complex task. This study attempted to simplify this process by introducing an innovative approach to size PV systems in these faculties. The research method used the Extended Kalman Artificial Neural Network (EKF-ANN) and the Crow Search Algorithm (CSA) to enhance the accuracy of PV system sizing. Data was collected on the study site, load demand, weather conditions, system components, and operational control and systems models to establish sizing criteria. The study focused on the optimal size of a solar PV system at the Faculty of Law building, University of Port-Harcourt, and how to improve its accuracy. The results showed that using global solar insolation parameters, EKF-ANN predicted values for global temperature, flock size, and maximal iteration. This optimized system could generate surplus power for effective grid supply. The study found that the optimal size of the series-connected panels for the Faculty of Law building was 96, 83, 73, and 65 units, with corresponding insolation values ranging from 3.737 to 4.368 kW/m 2. It was concluded that the combination of CSA and EKF-ANN in solar PV sizing is suitable forachieving optimal outcomes for energy storage and grid supply. Nonetheless, the study recommended additional investigation into real-time and grid-connected solutions to enhance the proposed approach's effectiveness.
Journal of Computational Mechanics, Power System and Control, 2024
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towa... more Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Resbee Publishers Journal of Computational Mechanics, Power System and Control, 2023
The lithium-ion battery (LIB) technology is getting particular attention because of its effective... more The lithium-ion battery (LIB) technology is getting particular attention because of its effectiveness in small-scale-electronic products such as watches, calculators, torchlights, or mobile phones through to large-scale power systems such as automobiles, trains, ships, submarines, or airplanes. LIBs are widely applied due to their advantages which make them unique. They exhibit greater energy density than other types of rechargeable batteries. LIBs are lightweight with a limited rate of charge loss, a greater number of charge/discharge cycles, no complete discharge is needed, and LIBs function at a higher voltage than other rechargeable batteries. However, LIB is suffering from many disadvantages such as the high risk of bursting, high cost compared to other batteries, battery deterioration after a complete discharge, high sensitivity to high temperatures (fast degradation when exposed to heat), poor rate of capability, very limited lifespan (2-3 years) and not available in standard cells sizes like others. Basic science research combining solid-state chemistry and physics has been at the heart of this endeavor, particularly throughout the 1970s and 1980s. With the awarding of the 2019 Nobel Prize in Chemistry to the creation of lithium-ion batteries, it is instructive to examine the evolution of cathode chemistry that enabled modern lithium-ion technology. A good choice of cathode materials leads to enhanced performance in LIBs. This work involves a deep comprehension of Li-ion transport, as well as the mechanism of charge and discharge in LIBs. The paper provides a fundamental study on layered, spinel, and olivine-based cathode materials and their benefit for LIBs. The study also gives details about optimization techniques needed to improve the cathode performances. The advantages and disadvantages of these prominent cathode materialsfor rechargeable LIBsare also discussed to emphasize the importance of choosing and/or optimizing the right cathode materials to lead to enhanced LIB performance.
Journal of Computational Mechanics, Power System and Control, 2024
As the demand for renewable energy continues to rise, it becomes crucial to discover effective wa... more As the demand for renewable energy continues to rise, it becomes crucial to discover effective ways to enhance grid-connected photovoltaic (PV) battery energy storage systems. The Institute of Petroleum Studies (IPS) complex at the University of Port Harcourt in Rivers State, Nigeria, embarked on a quest to determine the optimal approach for optimizing their PV battery energy storage system. This research aimed to fulfill this need by employing a diverse research methodology, incorporating the innovative MOALO theory. To begin with, the research gathered primary and secondary data to construct models for the power grid, solarPV, and battery. Furthermore, it meticulously analyzed the load profile of the IPS complex, at the University of Port Harcourt. Leveraging the power of the MOALO theory.The researchers accurately sized the system and evaluated the potential outcomes of simultaneously interconnecting all loads. To gauge the system's performance, there was a calculation of various parameters such as economics, random walk, boundary conditioning, entrapping ants, and ant trap development. Remarkably, the outcome showed that the fitness responses between the two trial runs, facilitated by the integration of MOALO, were strikingly similar, revealing a typical concaveconnected shape, which is characteristic of a multi-objective solver. The optimal multi-objective cost implication of the system was estimated to be around 4,300 USD, with a power mismatch performance of approximately-1.7819e+09. Based on these compelling findings, the study concluded that MOALO serves as an impressive optimization tool capable of minimizing power mismatches and optimizing costs. Moreover, it recommended the generation of excess power as a means to achieve sustainability.
Journal of Computational Mechanics, Power System and Control, 2024
This study was conducted to optimize the integration of solar-photovoltaic-distributed energy res... more This study was conducted to optimize the integration of solar-photovoltaic-distributed energy resources (SPV-DERs) within the Nigerian power system networks using an AI-based Particle Swarm Optimization (PSO) Algorithm. By employing a mixed research method, primary and secondary data were gathered to calculate flow analysis, NR method's equations, PSO's position update model, particle swarm optimizer algorithm, and application modeling including Solar-PV DER modeling. The AI-based PSO algorithm design was developed for optimizing SPV-DER integration in Nigerian power system networks, and key parameters and variables that needed consideration were identified. The study also established how the performance of the AI-based PSO algorithm could be evaluated and compared with other optimization techniques for SPV-DER integration within Nigerian power system networks. The study's results showed that voltage limits were within acceptable ranges, and solar power contributions were estimated at 880.10MW with 46,718 panels needed. The study concluded and recommended that investing in AI-powered tools for efficient power distribution; monitoring and resource optimization for sustainable energy sources would optimize performance and unleash Nigeria's sustainable energy potential.
Journal of Computational Mechanics, Power System and Control, 2024
This study was conducted to develop and evaluate the Optimal Poly-1-Order (OP-1) model for approx... more This study was conducted to develop and evaluate the Optimal Poly-1-Order (OP-1) model for approximating solar photovoltaic (PV) power generation. Using a mixed research method, the study employed Ibrahim's simulation and prediction of grid-connected PV system theory with two objectives and their corresponding research questions. The study gathered primary and secondary data to approximate the implementation of a solar-PV system with an OP-1 model for generating electricity: optimizing energy production, load demands, and financial viability in the medical hostel facility of the University of Port Harcourt, Rivers State, Nigeria. With the use of simulation and descriptive methods of data analysis, results showed that the lighting system had 400 lights, each with 12W power. It operated for a total of 18 hours. Daily power consumption was 36,400 Wh. More so, it showed that 60 fans with 100W power were used during the same hours, resulting in a daily power usage of 108,000 Wh. Based on a comprehensive economic evaluation, the OP-1 solar-PV system was found to be economically viable for powering the medical hostel. The system met electricity demand, resulting in a remarkable 407% ROI and substantial savings for the grid, despite a lower optimized size of 193kW compared to the base peak generation of 383.90k. The study concluded and recommended that the proposed OP-1 Solar-PV power plant can meet the facility's electricity needs with a peak generation of 383.90kW and detailed energy analysis. Deploying this efficient solar-PV setup guarantees reliable and green electricity for the Medical Hostel, slashing the campus's carbon footprint and grid reliance.
Journal of Computational Mechanics, Power System and Control
The inclusion of hydroelectric power is crucial to Nigeria's overall energy mix, playing a signif... more The inclusion of hydroelectric power is crucial to Nigeria's overall energy mix, playing a significant role in electricity generation. However, the Shiroro hydro plant, one of the main facilities located on the Kaduna River, is currently facing operational obstacles due to deteriorating infrastructure and inadequate maintenance practices. To overcome these challenges and improve efficiency within Nigeria's hydroelectric power sector, a hybrid-optimization approach has been proposed. This study sought to enhance the efficiency of the Shiroro hydro plant by implementing this innovative method. To achieve our objectives and address pertinent research questions, a mixed research method combining primary and secondary data was employed. The analysis included hydropower modeling and hydro-turbine input-output modeling. Three optimizer models, namely the particle swarm optimizer (PSO), Ant colony optimizer (ACO), and Artificial bee colony optimizer (ABCO), were utilized to formulate objective functions and task representations. The study involved comparing the daily output and fitness response of the Shiroro hydro plant through swarm optimizer iterations. The findings revealed a clear correlation between the turbine's power output and the water flow rate and water column height, suggesting that altering these factors could significantly improve the plant's performance. The comparison of the PSO, ACO, and ABCO models demonstrated that PSO and ABCO generated optimal or near-optimal solutions, while ACO produced suboptimal results. Consequently, the study concluded that enhancing the Shiroro hydro plant's output was feasible by increasing the water flow rate and column height. Additionally, the utilization of PSO and ABCO models proved to be an effective means of accurately predicting the turbine's output. As a result, the study recommended the integration of hybrid optimization techniques to monitor and identify any deviations in the Shiroro hydro plant's daily power output. This approach would enable prompt maintenance to be carried out, preventing significant damage to the plant. Ultimately, this research contributes valuable insights into improving the efficiency and performance of Nigeria's Shiroro hydro plant.
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Keywords: Integrity, Punctuality, Ethical Standards, Library Staff, Academic Library
Keywords: Digital Literacy, Librarians, Managing Institutional Repositories,
Effective management, Federal Universities.
Keywords: Integrity, Punctuality, Ethical Standards, Library Staff, Academic Library
Keywords: Digital Literacy, Librarians, Managing Institutional Repositories,
Effective management, Federal Universities.