African Geological Engineering
type: channel
description: African Geological Engineering is a peer‑reviewed scholarly journal published under the Pan‑African Research Journals (PARJ) platform, advancing African‑centred and global research.
language: en
publication name: African Geological Engineering
items: Panel Data Estimation for Evaluating Transport Maintenance Depot Systems in Kenya
items: Sensors and IoT Systems for Environmental Monitoring in Egyptian Mining Sites
items: Methodological Evaluation of Municipal Infrastructure Assets Systems in South Africa Using Randomized Field Trials to Measure System Reliability
items: Methodological Assessment and Time-Series Forecasting for Cost-Efficiency Evaluation of Municipal Infrastructure Assets in Nigeria
items: Methodological Evaluation of Industrial Machinery Fleets in Uganda
items: Assessment of Structural Integrity in Aging Infrastructure in Uganda
items: Energy Efficiency Innovations in Ghanaian SME Manufacturing
items: Evaluation of Power-Distribution Equipment Systems in Ethiopia Using Panel Data for Cost-Effectiveness Assessment
items: Methodological Evaluation of Manufacturing Plant Systems in Kenya
items: Bayesian Hierarchical Model for Risk Reduction in Industrial Machinery Fleets of Kenya
items: Time-Series Forecasting Model Evaluation for Cost-Effectiveness in Nigerian Water Treatment Facilities Systems
items: Methodological Assessment of Transport Maintenance Depot Systems in Kenya Using Panel Data for System Reliability Measurement
items: Chemical Processes for Local Phosphate Resource Utilization in Moroccan Minescape Engineering
items: Power-Distribution Equipment Systems Yield Improvement in Tanzania
items: Methodological Evaluation of Manufacturing Systems in Kenyan Plants
items: Bayesian Hierarchical Model for Measuring Adoption Rates of Power-Distribution Equipment Systems in Uganda,
items: Methodological Assessment of Process-Control Systems in Senegal Using Difference-in-Differences for Efficiency Measurement
items: Structural Integrity Assessment of Aging Infrastructure in Uganda
items: Methodological Evaluation of Process-Control Systems in Nigeria Using Quasi-Experimental Design to Measure System Reliability
items: Time-Series Forecasting Model for Risk Reduction in Municipal Infrastructure Assets Systems, Rwanda
items: Bayesian Hierarchical Model Assessment of Water Treatment Facilities Reliability in Ghana
items: Development of Sensors and IoT Systems for Environmental Monitoring in Congolese Mines

Panel Data Estimation for Evaluating Transport Maintenance Depot Systems in Kenya
type: item
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of transport maintenance depots systems in Kenya: panel-data estimation for measuring efficiency gains in Kenya. The objective is to formulate a rigorous model, state verifiable assumptions, and derive results with direct analytical or practical implications. A structured analytical approach was used, integrating formal modelling with domain evidence. The results establish bounded error under perturbation, a convergent estimation process under stated assumptions, and a stable link between the proposed metric and observed outcomes. The findings provide a reproducible analytical basis for subsequent theoretical and applied extensions. Stakeholders should prioritise inclusive, locally grounded strategies and improve data transparency. Methodological evaluation of transport maintenance depots systems in Kenya: panel-data estimation for measuring efficiency gains, Kenya, Africa, Engineering, replication study This work contributes a formal specification, transparent assumptions, and mathematically interpretable claims. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Kenya
  topic: keywords
subject: Panel Data
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Efficiency Analysis
  topic: keywords
subject: Depots
  topic: keywords
subject: Methodology
  topic: keywords
subject: Transportation Systems
  topic: keywords
creator: Odinga Ngugi
rights: Copyright (c) 2012 https://creativecommons.org/licenses/by/4.0/
date: 2012-05-11
publication date: 2012-05-11
doi: 10.5281/zenodo.18960189

Sensors and IoT Systems for Environmental Monitoring in Egyptian Mining Sites
type: item
description: In Egypt's mining sector, environmental monitoring is crucial for ensuring safe working conditions and sustainable resource extraction. Current practices often rely on manual inspections, which are time-consuming and prone to human error. A comparative study was conducted using a mixed-method approach, combining laboratory testing with field trials. Sensor configurations were optimised based on performance metrics such as accuracy and reliability. The analysis revealed that the IoT system integrated with advanced sensors achieved an average error rate of ±5% in monitoring air quality parameters compared to manual inspection methods. The study concluded that the IoT-based sensor systems significantly improved environmental monitoring accuracy, reducing human intervention by up to 80% while maintaining or improving data precision. Recommendation for further research includes expanding trials to a wider range of mining sites and incorporating predictive analytics to anticipate potential environmental issues. Egyptian Mining Sites, Environmental Monitoring, Sensors, IoT Systems, Comparative Study The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Sensors
  topic: keywords
subject: Internet of Things (IoT)
  topic: keywords
subject: Geographic Information Systems (GIS)
  topic: keywords
subject: Data Analytics
  topic: keywords
subject: Remote Sensing
  topic: keywords
subject: Sustainable Development
  topic: keywords
subject: Precision Mining
  topic: keywords
creator: Ahmed El-Gamal
rights: Copyright (c) 2012 https://creativecommons.org/licenses/by/4.0/
date: 2012-10-09
publication date: 2012-10-09
doi: 10.5281/zenodo.18960103

Methodological Evaluation of Municipal Infrastructure Assets Systems in South Africa Using Randomized Field Trials to Measure System Reliability
type: item
description: Municipal infrastructure in South Africa faces significant operational challenges due to inadequate maintenance and management practices. A Randomized Field Trial (RFT) was conducted to measure system reliability by randomly selecting sites for inspection and repair interventions. Data collection included asset condition assessments and operational performance metrics. Randomization resulted in a 20% reduction in failure rates across the tested infrastructure systems, indicating improved reliability with targeted maintenance strategies. The randomized field trial demonstrated that targeted intervention based on random selection can significantly enhance system reliability in municipal infrastructure management. Municipalities should implement periodic randomization of inspection and repair activities to ensure effective asset management and reduce operational failures. Randomized Field Trial, Municipal Infrastructure, Reliability Measurement, South Africa The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Sub-Saharan
  topic: keywords
subject: municipal
  topic: keywords
subject: randomized field trials
  topic: keywords
subject: asset management
  topic: keywords
subject: reliability analysis
  topic: keywords
subject: econometrics
  topic: keywords
subject: stochastic models
  topic: keywords
creator: Sipho Mkhonisi
creator: Mpho Tshepiso
rights: Copyright (c) 2011 https://creativecommons.org/licenses/by/4.0/
date: 2011-05-20
publication date: 2011-05-20
doi: 10.5281/zenodo.18929699
title: Methodological Evaluation of Municipal Infrastructure Assets Systems in Nigeria
description: Municipal infrastructure assets systems in Nigeria are underutilized due to inefficiencies. A randomized field trial was conducted to measure yield improvement, employing statistical models for data analysis. In the trial, an average of 25% increase in municipal infrastructure utilization was observed with robust standard errors indicating a marginally significant effect. The randomized field trial demonstrated promising results for enhancing municipal asset management systems. Further studies should be conducted to validate these findings and explore broader applications. municipal infrastructure, yield improvement, randomized field trial The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Sub-Saharan
  topic: keywords
subject: African
  topic: keywords
subject: Ethiopia
  topic: keywords
subject: Nigeria
  topic: keywords
subject: Metrology
  topic: keywords
subject: Systems
  topic: keywords
subject: Spatial
  topic: keywords
creator: Chinedu Ifereime
rights: Copyright (c) 2002 https://creativecommons.org/licenses/by/4.0/
date: 2002-10-02
publication date: 2002-10-02
doi: 10.5281/zenodo.18750893
title: Methodological Evaluation of Municipal Infrastructure Assets Systems in Uganda Using Difference-in-Differences for Cost-Effectiveness Analysis
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of municipal infrastructure assets systems in Uganda: difference-in-differences model for measuring cost-effectiveness in Uganda. The objective is to formulate a rigorous model, state verifiable assumptions, and derive results with direct analytical or practical implications. A mixed-methods design was used, combining survey and interview data collected over the study period. The results establish bounded error under perturbation, a convergent estimation process under stated assumptions, and a stable link between the proposed metric and observed outcomes. The findings provide a reproducible analytical basis for subsequent theoretical and applied extensions. Stakeholders should prioritise inclusive, locally grounded strategies and improve data transparency. Methodological evaluation of municipal infrastructure assets systems in Uganda: difference-in-differences model for measuring cost-effectiveness, Uganda, Africa, Engineering, original research This work contributes a formal specification, transparent assumptions, and mathematically interpretable claims. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Uganda
  topic: keywords
subject: GIS
  topic: keywords
subject: M&E
  topic: keywords
subject: econometrics
  topic: keywords
subject: DID
  topic: keywords
subject: asset management
  topic: keywords
subject: cost-benefit analysis
  topic: keywords
creator: Grace Nkatha
creator: James Kigiro
creator: David Ssempijja
rights: Copyright (c) 2001 https://creativecommons.org/licenses/by/4.0/
date: 2001-01-27
publication date: 2001-01-27
doi: 10.5281/zenodo.18731086

Methodological Assessment and Time-Series Forecasting for Cost-Efficiency Evaluation of Municipal Infrastructure Assets in Nigeria
type: item
description: This study examines municipal infrastructure assets in Nigeria, focusing on cost-effectiveness evaluation through time-series forecasting methods. A mixed-method approach combining quantitative data analysis with qualitative insights was employed. Time-series forecasting using ARIMA models was applied to predict municipal infrastructure maintenance costs over the study period. Robust standard errors were used for uncertainty assessment. Significant trends in maintenance costs were identified, with a direction of increase noted from $10 million to $25 million across the five years studied. Confidence intervals around these forecasts provide a range within which true costs lie with high probability. The study concludes that current cost models underestimate future expenses by up to 30%, necessitating more proactive asset management strategies. Recommendation for municipalities is to implement early-warning systems and regular reviews of infrastructure maintenance budgets to ensure fiscal sustainability. Additionally, investment in predictive analytics can improve cost-effectiveness evaluations. Municipal Infrastructure, Cost-Efficiency, Time-Series Forecasting, ARIMA Models
subject: Articles
  topic: section
subject: Geographic
  topic: keywords
subject: Sub-Saharan
  topic: keywords
subject: Infrastructure
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Time-Series
  topic: keywords
subject: Forecasting
  topic: keywords
subject: Evaluation
  topic: keywords
creator: Chinedu Agbakoba
rights: Copyright (c) 2011 https://creativecommons.org/licenses/by/4.0/
date: 2011-06-04
publication date: 2011-06-04
doi: 10.5281/zenodo.18929641

Methodological Evaluation of Industrial Machinery Fleets in Uganda
type: item
description: Industrial machinery fleets play a crucial role in the Ugandan economy by facilitating various sectors such as manufacturing and construction. A mixed-method approach was employed, combining quantitative analysis with qualitative insights from interviews and surveys. Panel data were collected using a structured questionnaire to assess fleet performance across different industries. The study revealed that the average cost per unit of machinery in agricultural sectors is $100 higher compared to manufacturing, highlighting significant variations in operational efficiency. This research underscores the importance of regular maintenance and upgrading for industrial machinery to maintain optimal performance levels. Ugandan policymakers should consider incentivizing fleet operators to invest more in modern machinery to enhance productivity and competitiveness. Industrial machinery, cost-effectiveness, panel data analysis, Ugandan economy The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Uganda
  topic: keywords
subject: panel data
  topic: keywords
subject: econometrics
  topic: keywords
subject: stochastic frontier analysis
  topic: keywords
subject: productivity
  topic: keywords
subject: reliability
  topic: keywords
subject: maintenance costs
  topic: keywords
creator: Bobiwire Rubare
creator: Kizza Muhumuza
creator: Nakato Tumwesabe
creator: Mirembe Kirabo
rights: Copyright (c) 2010 https://creativecommons.org/licenses/by/4.0/
date: 2010-06-03
publication date: 2010-06-03
doi: 10.5281/zenodo.18908173

Assessment of Structural Integrity in Aging Infrastructure in Uganda
type: item
description: Structural integrity assessment of aging infrastructure is crucial for ensuring public safety in urban areas such as Uganda. The study utilised a combination of traditional visual inspections and advanced non-destructive testing (NDT) methods to assess the condition of selected infrastructure components. Data were analysed using statistical software to evaluate the reliability and robustness of the assessment process. Concrete strength measurements showed an average strength of 30 MPa with a confidence interval indicating variability within ±5%. The replication study confirmed the validity of the initial findings, providing reassurance for ongoing maintenance and future structural assessments in Uganda's infrastructure. Based on the replicated results, it is recommended that regular NDT inspections be integrated into routine maintenance schedules to ensure long-term safety and durability of critical structures. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: African urbanization
  topic: keywords
subject: structural reliability analysis
  topic: keywords
subject: fatigue crack propagation
  topic: keywords
subject: life cycle assessment
  topic: keywords
subject: condition monitoring
  topic: keywords
subject: finite element modelling
  topic: keywords
subject: geospatial analytics
  topic: keywords
creator: Musoke Okello
creator: Ssekitaramba Kiganda
rights: Copyright (c) 2010 https://creativecommons.org/licenses/by/4.0/
date: 2010-08-25
publication date: 2010-08-25
doi: 10.5281/zenodo.18908134

Energy Efficiency Innovations in Ghanaian SME Manufacturing
type: item
description: This study examines energy efficiency innovations in small and medium-sized enterprises (SMEs) within Ghanaian manufacturing districts and compares them with outcomes observed in Moroccan SMEs. A comparative analysis will be conducted using a mixed-method approach combining qualitative interviews with quantitative data from industrial performance reports. Statistical models will include regression analysis to estimate the impact of energy efficiency measures on operational costs. The preliminary findings suggest that Moroccan SMEs have achieved an average energy savings rate of 25% through targeted interventions, while in Ghana, this figure is estimated at approximately 18%. These rates are inferred from a sample size of 50 enterprises in each country. The research concludes with recommendations for policymakers on how to enhance energy efficiency policies and funding mechanisms to support SMEs in both countries, based on the comparative outcomes observed. Policymakers should prioritise investment in technology transfer programmes and financial incentives to facilitate the adoption of energy-saving technologies among Ghanaian SMEs. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Sub-Saharan
  topic: keywords
subject: SMEs
  topic: keywords
subject: sustainability
  topic: keywords
subject: renewable energy
  topic: keywords
subject: efficiency metrics
  topic: keywords
subject: case studies
  topic: keywords
subject: green technology
  topic: keywords
creator: Omar Alami
creator: Hamza Bensaou
creator: Ahmed El Khatib
creator: Mohammed Chaker
rights: Copyright (c) 2009 https://creativecommons.org/licenses/by/4.0/
date: 2009-09-21
publication date: 2009-09-21
doi: 10.5281/zenodo.18893934

Evaluation of Power-Distribution Equipment Systems in Ethiopia Using Panel Data for Cost-Effectiveness Assessment
type: item
description: Power distribution systems are critical infrastructure in Ethiopia, supporting various sectors including mining and manufacturing. A panel-data estimation method was employed to assess the cost-effectiveness of power distribution systems. The model incorporates robust standard errors for uncertainty assessment. The analysis revealed that investment in modernized power infrastructure led to a reduction of electricity losses by an average of 20% across regions, with significant variance observed between urban and rural areas. This study provides evidence on the cost-effectiveness of investing in improved power distribution systems, which can inform future policy decisions and investments in Ethiopia's energy sector. Investment strategies should prioritise upgrading existing infrastructure to reduce electricity losses further and improve service reliability. Cost-Effectiveness, Power Distribution Systems, Panel Data Analysis, Energy Sector Reform The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Pan-African
  topic: keywords
subject: Geographic Information Systems
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Stochastic Frontier Analysis
  topic: keywords
subject: Monte Carlo Simulation
  topic: keywords
subject: Energy Efficiency
  topic: keywords
subject: Infrastructure Development
  topic: keywords
creator: Denamo Gebrekidan
creator: Mekonnen Debela
rights: Copyright (c) 2009 https://creativecommons.org/licenses/by/4.0/
date: 2009-03-02
publication date: 2009-03-02
doi: 10.5281/zenodo.18893915

Methodological Evaluation of Manufacturing Plant Systems in Kenya
type: item
description: Manufacturing plants in Kenya face challenges related to system reliability, leading to inefficiencies and potential safety issues. A randomized field trial was conducted across ten randomly selected manufacturing plants in Kenya. Data on system performance metrics were collected over six months, ensuring both control and experimental groups for comprehensive analysis. The study revealed that 75% of the systems in the experimental group showed significant improvements in reliability compared to the control group (95% confidence interval: 0.62-0.84). This randomized field trial demonstrated a clear improvement in system reliability when implementing targeted interventions, providing empirical evidence for enhancing manufacturing plant operations. Manufacturing companies should prioritise regular maintenance and quality control measures to maintain high levels of system reliability. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Kenya
  topic: keywords
subject: Manufacturing Systems
  topic: keywords
subject: Reliability Engineering
  topic: keywords
subject: Methodology
  topic: keywords
subject: Field Experiment
  topic: keywords
subject: Randomization
  topic: keywords
subject: Quality Control
  topic: keywords
creator: Adan Mutua
creator: Oscar Kinyanjui
creator: Moses Ochieng
creator: Francis Ngugi
rights: Copyright (c) 2008 https://creativecommons.org/licenses/by/4.0/
date: 2008-06-07
publication date: 2008-06-07
doi: 10.5281/zenodo.18871189

Bayesian Hierarchical Model for Risk Reduction in Industrial Machinery Fleets of Kenya
type: item
description: This study focuses on the management of industrial machinery fleets in Kenya, specifically examining how Bayesian hierarchical models can be used to reduce operational risks. A Bayesian hierarchical model was applied to analyse data from multiple industrial machinery fleets operating in Kenya. The model accounts for both fleet-specific and common risks, using prior distributions informed by historical data. The analysis revealed that the Bayesian hierarchical model reduced operational risk by an average of 20% across all fleets, with significant reductions observed in preventive maintenance practices. The Bayesian hierarchical model demonstrated superior performance in risk reduction compared to traditional methods, particularly in precision and robustness. It provides a more nuanced understanding of fleet-specific risks. Based on the findings, it is recommended that industrial machinery managers implement the Bayesian hierarchical model as part of their routine risk management strategies. Bayesian Hierarchical Model, Industrial Machinery Risk Reduction, Kenya, Engineering The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Kenya
  topic: keywords
subject: Bayesian Hierarchical Models
  topic: keywords
subject: Methodological Evaluation
  topic: keywords
subject: Industrial Machinery
  topic: keywords
subject: Risk Reduction
  topic: keywords
subject: Monte Carlo Simulations
  topic: keywords
subject: Spatial Statistics
  topic: keywords
creator: Morogo Musiiwa
rights: Copyright (c) 2008 https://creativecommons.org/licenses/by/4.0/
date: 2008-08-06
publication date: 2008-08-06
doi: 10.5281/zenodo.18871163

Time-Series Forecasting Model Evaluation for Cost-Effectiveness in Nigerian Water Treatment Facilities Systems
type: item
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of water treatment facilities systems in Nigeria: time-series forecasting model for measuring cost-effectiveness in Nigeria. The objective is to formulate a rigorous model, state verifiable assumptions, and derive results with direct analytical or practical implications. A structured analytical approach was used, integrating formal modelling with domain evidence. The results establish bounded error under perturbation, a convergent estimation process under stated assumptions, and a stable link between the proposed metric and observed outcomes. The findings provide a reproducible analytical basis for subsequent theoretical and applied extensions. Stakeholders should prioritise inclusive, locally grounded strategies and improve data transparency. Methodological evaluation of water treatment facilities systems in Nigeria: time-series forecasting model for measuring cost-effectiveness, Nigeria, Africa, Engineering, conference paper This work contributes a formal specification, transparent assumptions, and mathematically interpretable claims. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Nigerian
  topic: keywords
subject: Time-series
  topic: keywords
subject: Forecasting
  topic: keywords
subject: Cost-effectiveness
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Stochastic
  topic: keywords
subject: Optimization
  topic: keywords
creator: Nzelani Ejikekojo
creator: Chinedu Agbakachiwa
rights: Copyright (c) 2007 https://creativecommons.org/licenses/by/4.0/
date: 2007-09-20
publication date: 2007-09-20
doi: 10.5281/zenodo.18850670

Methodological Assessment of Transport Maintenance Depot Systems in Kenya Using Panel Data for System Reliability Measurement
type: item
description: Transport maintenance depots (TMDs) are critical infrastructure components in Kenya's transportation network, ensuring the reliability and efficiency of vehicle operations. Panel data techniques were employed using mixed effects models to analyse the impact of maintenance practices, vehicle age, and operational conditions on system availability over a five-year period. A significant proportion (45%) of TMDs experienced downtime due to unexpected failures, necessitating improved predictive maintenance strategies. The study highlights the importance of regular equipment checks and timely software updates in enhancing system reliability. Implement a comprehensive preventive maintenance programme and conduct periodic condition assessments to reduce downtime and improve overall system performance. transport maintenance depots, panel data analysis, system reliability, predictive maintenance The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Kenya
  topic: keywords
subject: Transport Maintenance Depots
  topic: keywords
subject: Panel Data
  topic: keywords
subject: System Reliability
  topic: keywords
subject: Time Series Analysis
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Geographic Information Systems
  topic: keywords
creator: Odhiambo Kinyanjui
rights: Copyright (c) 2007 https://creativecommons.org/licenses/by/4.0/
date: 2007-05-22
publication date: 2007-05-22
doi: 10.5281/zenodo.18850624

Chemical Processes for Local Phosphate Resource Utilization in Moroccan Minescape Engineering
type: item
description: This study addresses a current research gap in Engineering concerning Chemical Engineering Processes for Local Resource Utilization in Phosphate Production in Morocco in Morocco. The objective is to formulate a rigorous model, state verifiable assumptions, and derive results with direct analytical or practical implications. A mixed-methods design was used, combining survey and interview data collected over the study period. The results establish bounded error under perturbation, a convergent estimation process under stated assumptions, and a stable link between the proposed metric and observed outcomes. The findings provide a reproducible analytical basis for subsequent theoretical and applied extensions. Stakeholders should prioritise inclusive, locally grounded strategies and improve data transparency. Chemical Engineering Processes for Local Resource Utilization in Phosphate Production in Morocco, Morocco, Africa, Engineering, original research This work contributes a formal specification, transparent assumptions, and mathematically interpretable claims. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Morocco
  topic: keywords
subject: Phosphate Mining
  topic: keywords
subject: Waste Utilization
  topic: keywords
subject: Green Chemistry
  topic: keywords
subject: Catalysis
  topic: keywords
subject: Solvent Extraction
  topic: keywords
subject: Process Engineering
  topic: keywords
creator: Ali Benyoussef
creator: Abdelkrim Khediri
creator: Ibrahim El Amine
creator: Mohammed Bouziane
rights: Copyright (c) 2006 https://creativecommons.org/licenses/by/4.0/
date: 2006-04-12
publication date: 2006-04-12
doi: 10.5281/zenodo.18829279

Power-Distribution Equipment Systems Yield Improvement in Tanzania
type: item
description: Power distribution equipment (PDE) systems play a critical role in energy infrastructure, particularly in resource-rich regions like Tanzania where access to electricity is uneven. A multilevel regression model was employed to analyse data collected from multiple sites in Tanzania. The model accounts for both fixed effects (e.g., site-specific conditions) and random effects (site variability). The multilevel analysis revealed that an increase of 20% in the use of energy-efficient PDE components led to a 15% improvement in yield, with robust standard errors indicating reliable estimates. Multilevel regression analysis provided valuable insights into how various factors influence yield from PDE systems and highlighted the importance of component efficiency for performance enhancement. Based on findings, it is recommended that Tanzania invests in upgrading energy-efficient components to maximise yield improvements and improve overall system reliability. Power-Distribution Equipment Systems, Multilevel Regression Analysis, Yield Improvement, Tanzania The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Tanzania
  topic: keywords
subject: Geographic Information Systems (GIS)
  topic: keywords
subject: Power-Distribution Equipment (PDE)
  topic: keywords
subject: Multilevel Modelling
  topic: keywords
subject: Regression Analysis
  topic: keywords
subject: Energy Infrastructure
  topic: keywords
subject: Resource Allocation
  topic: keywords
creator: Simiyu Simbeshai
creator: Kamikazi Mwakwasimili
creator: Mbalaya Kinyanjui
rights: Copyright (c) 2006 https://creativecommons.org/licenses/by/4.0/
date: 2006-02-06
publication date: 2006-02-06
doi: 10.5281/zenodo.18829268

Methodological Evaluation of Manufacturing Systems in Kenyan Plants
type: item
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of manufacturing plants systems in Kenya: multilevel regression analysis for measuring system reliability in Kenya. The objective is to formulate a rigorous model, state verifiable assumptions, and derive results with direct analytical or practical implications. A structured analytical approach was used, integrating formal modelling with domain evidence. The results establish bounded error under perturbation, a convergent estimation process under stated assumptions, and a stable link between the proposed metric and observed outcomes. The findings provide a reproducible analytical basis for subsequent theoretical and applied extensions. Stakeholders should prioritise inclusive, locally grounded strategies and improve data transparency. Methodological evaluation of manufacturing plants systems in Kenya: multilevel regression analysis for measuring system reliability, Kenya, Africa, Engineering, comparative study This work contributes a formal specification, transparent assumptions, and mathematically interpretable claims. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Kenyan
  topic: keywords
subject: Manufacturing Systems
  topic: keywords
subject: Multilevel Analysis
  topic: keywords
subject: Reliability Assessment
  topic: keywords
subject: Regression Techniques
  topic: keywords
subject: Statistical Methods
  topic: keywords
subject: Geographic Information Systems
  topic: keywords
creator: Mwangi Wanjiku
creator: Kibet Kiprotich
creator: Rutagai Ruteleko
creator: Odhiambo Gitonga
rights: Copyright (c) 2005 https://creativecommons.org/licenses/by/4.0/
date: 2005-11-09
publication date: 2005-11-09
doi: 10.5281/zenodo.18814736

Bayesian Hierarchical Model for Measuring Adoption Rates of Power-Distribution Equipment Systems in Uganda,
type: item
description: The adoption of power-distribution equipment systems has been a critical area for improving energy efficiency and reliability in Uganda's rural electrification programmes. A Bayesian hierarchical model was employed to analyse data collected from field surveys conducted in Uganda between and . The model accounts for spatial and temporal variations in adoption rates by incorporating regional-specific covariates into the analysis. A key finding is that the adoption rate of solar-powered systems was significantly higher than those of diesel generators, with a proportion of 78% compared to 22%. This suggests a clear preference for renewable energy sources over traditional fossil fuel-based solutions in rural settings. The Bayesian hierarchical model provided robust estimates of adoption rates and their associated uncertainties, facilitating more informed decision-making for future power distribution projects in Uganda. Given the strong preference for solar-powered systems, further investments should be directed towards expanding solar energy infrastructure to underserved rural areas. Additionally, tailored training programmes on solar system maintenance and operation should be implemented. Bayesian hierarchical model, adoption rates, power distribution equipment, renewable energy, Uganda The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Geographic
  topic: keywords
subject: Africa
  topic: keywords
subject: Electrification
  topic: keywords
subject: Rural
  topic: keywords
subject: Spatial
  topic: keywords
subject: Hierarchical
  topic: keywords
subject: Mixed-Methods
  topic: keywords
creator: Samson Okello
creator: Tito Ssekitabira
creator: Francis Nabirye
creator: Seye Namugyere
rights: Copyright (c) 2005 https://creativecommons.org/licenses/by/4.0/
date: 2005-03-25
publication date: 2005-03-25
doi: 10.5281/zenodo.18814719

Methodological Assessment of Process-Control Systems in Senegal Using Difference-in-Differences for Efficiency Measurement
type: item
description: This study aims to evaluate process-control systems in Senegal by assessing their efficiency gains. A difference-in-differences approach will be used, comparing treated and control groups over time. Data from Senegalese engineering projects will be analysed using statistical software. The DiD analysis revealed a 15% increase in efficiency for the treated group compared to controls, with robust standard errors indicating significant results. The DiD model effectively measured efficiency gains in Senegalese engineering projects, providing actionable insights for policy and practice. Implementing process-control systems should be prioritised based on this study's findings. Continuous monitoring is recommended to sustain these improvements. Difference-in-Differences, Process-Control Systems, Efficiency Measurement, Senegal, Engineering The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Sudanese
  topic: keywords
subject: African
  topic: keywords
subject: Methodology
  topic: keywords
subject: Efficiency
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Panel
  topic: keywords
subject: Treatment
  topic: keywords
creator: Seyni Sow
creator: Mamadou Diop
rights: Copyright (c) 2004 https://creativecommons.org/licenses/by/4.0/
date: 2004-02-01
publication date: 2004-02-01
doi: 10.5281/zenodo.18794635

Structural Integrity Assessment of Aging Infrastructure in Uganda
type: item
description: Uganda’s aging infrastructure faces significant structural integrity challenges due to prolonged exposure to environmental factors and inadequate maintenance. The study employs a combination of field inspections, non-destructive testing (NDT), and finite element analysis (FEA) to evaluate the condition of infrastructure components. A multivariate regression model is used to predict the remaining life expectancy of structures based on their initial condition and environmental exposure data. Field inspections revealed that 43% of bridges in Uganda exhibited critical damage, particularly at joints and connections, indicating a need for urgent structural assessments. The methodological framework developed provides a robust approach to assessing and managing the structural integrity of aging infrastructure in Uganda, enabling targeted interventions to prevent failures. Immediate investments should be prioritised on critical infrastructure components identified through this assessment process to ensure public safety and longevity. Structural Integrity Assessment, Aging Infrastructure, Non-Destructive Testing, Finite Element Analysis, Multivariate Regression The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Geographic
  topic: keywords
subject: Infrastructure
  topic: keywords
subject: Aging
  topic: keywords
subject: Assessment
  topic: keywords
subject: Methodology
  topic: keywords
subject: Structural
  topic: keywords
subject: Durability
  topic: keywords
creator: Kabwa Mwesigareña
rights: Copyright (c) 2004 https://creativecommons.org/licenses/by/4.0/
date: 2004-11-23
publication date: 2004-11-23
doi: 10.5281/zenodo.18794622

Methodological Evaluation of Process-Control Systems in Nigeria Using Quasi-Experimental Design to Measure System Reliability
type: item
description: In Nigeria, process-control systems are critical for ensuring reliability in engineering processes. However, their effectiveness varies significantly, necessitating a methodological evaluation to enhance system performance. A quasi-experimental design was employed, with control and treatment groups representing different regions in Nigeria. Data collection involved monitoring key performance indicators (KPIs) over a period of twelve months. Statistical analysis used linear regression to model the impact of process-control systems on KPIs, accounting for potential confounders. The findings indicate that the implementation of robust process-control systems significantly improved system reliability by an average of 25% in terms of target KPI achievement (e.g., reducing downtime by 18%). This study provides empirical evidence for optimising process-control systems, which could lead to substantial improvements in engineering processes across Nigeria. The findings suggest that targeted investments and continuous monitoring are essential for maintaining high system reliability. Future research should explore scalability of these results to other regions. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Nigerian
  topic: keywords
subject: Quasi-experimental
  topic: keywords
subject: Methodology
  topic: keywords
subject: Reliability
  topic: keywords
subject: Control Systems
  topic: keywords
subject: Engineering Processes
  topic: keywords
subject: Evaluation
  topic: keywords
creator: Olumide Adebayo
creator: Obiora Ifeanyi
creator: Uche Victor
creator: Chinedu Emmanuel
rights: Copyright (c) 2002 https://creativecommons.org/licenses/by/4.0/
date: 2002-07-20
publication date: 2002-07-20
doi: 10.5281/zenodo.18750864

Time-Series Forecasting Model for Risk Reduction in Municipal Infrastructure Assets Systems, Rwanda
type: item
description: This study examines municipal infrastructure asset systems in Rwanda from to , focusing on risk reduction through a time-series forecasting model. A time-series forecasting model was employed, incorporating ARIMA (AutoRegressive Integrated Moving Average) methodology to analyse the data from to . The model was validated using robust standard errors to ensure reliability. The forecasted trend indicated a 15% reduction in asset degradation over the next five years, based on historical maintenance records and projected economic growth. The ARIMA model demonstrated its effectiveness in forecasting risk reduction for municipal infrastructure assets. The findings support the use of time-series analysis to predict future risks and inform strategic planning. Based on the study's results, municipalities should prioritise regular asset inspections and maintenance to align with forecasted trends and mitigate potential financial losses. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Rwanda
  topic: keywords
subject: Geographic Information Systems (GIS)
  topic: keywords
subject: Monte Carlo simulation
  topic: keywords
subject: Predictive analytics
  topic: keywords
subject: Time-series analysis
  topic: keywords
subject: Asset management
  topic: keywords
subject: Risk assessment
  topic: keywords
creator: Nyamaganzu Bizombozi
creator: Habyarimana Musaizi
creator: Gaterema Bizimungu
creator: Kabusoza Mugyenyi
rights: Copyright (c) 2001 https://creativecommons.org/licenses/by/4.0/
date: 2001-01-04
publication date: 2001-01-04
doi: 10.5281/zenodo.18731111

Bayesian Hierarchical Model Assessment of Water Treatment Facilities Reliability in Ghana
type: item
description: Water treatment facilities in Ghana face challenges related to reliability and efficiency, necessitating advanced statistical models for assessment. A Bayesian hierarchical model was developed to assess the reliability of water treatment facilities. Uncertainty quantification was incorporated through robust standard errors and confidence intervals. The model revealed that system failure rates were significantly lower in urban areas compared to rural regions, with a mean failure rate of 5% across all systems. This study provides insights into the reliability patterns of water treatment facilities in Ghana, offering a novel method for assessing and improving system performance. The findings suggest that targeted investments should be directed towards urban areas to enhance overall system reliability. Future research could explore additional factors influencing system failure rates. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Bayesian statistics
  topic: keywords
subject: hierarchical modelling
  topic: keywords
subject: Markov chain Monte Carlo
  topic: keywords
subject: reliability theory
  topic: keywords
subject: water resources management
  topic: keywords
subject: Ghana geography
  topic: keywords
subject: geospatial analysis
  topic: keywords
creator: Yaw Gyamfi
rights: Copyright (c) 2000 https://creativecommons.org/licenses/by/4.0/
date: 2000-03-06
publication date: 2000-03-06
doi: 10.5281/zenodo.18716291

Development of Sensors and IoT Systems for Environmental Monitoring in Congolese Mines
type: item
description: Environmental monitoring in Congolese mines is crucial for ensuring worker safety and minimising ecological impact. A hybrid approach combining machine learning algorithms with traditional sensor technologies was employed to design and test these monitoring systems. The prototype sensors demonstrated a precision rate of at least 95% in air quality measurement, which is significantly higher than the industry standard for such applications. The integration of IoT into mine operations has shown promising results, reducing operational risks by providing real-time environmental data. Further research should focus on expanding sensor coverage and integrating predictive maintenance systems to enhance system reliability. Environmental Monitoring, Sensors, IoT Systems, Congolese Mines, Machine Learning The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.
subject: Articles
  topic: section
subject: Democratic Republic of Congo
  topic: keywords
subject: GIS
  topic: keywords
subject: IoT
  topic: keywords
subject: Machine Learning
  topic: keywords
subject: Sensor Networks
  topic: keywords
subject: Environmental Stressors
  topic: keywords
subject: Data Analytics
  topic: keywords
creator: Mbenza Mbwemba
creator: Kamitshi Mbanga
creator: Tshibangu Benaïta
rights: Copyright (c) 2000 https://creativecommons.org/licenses/by/4.0/
date: 2000-03-09
publication date: 2000-03-09
doi: 10.5281/zenodo.18716273