African Wood Science and Technology (Forestry)
type: channel
description: African Wood Science and Technology (Forestry) 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 Wood Science and Technology (Forestry)
items: Methodological Evaluation of Manufacturing Plant Systems in Tanzania Using Difference-in-Differences Approach
items: Bayesian Hierarchical Model Evaluation of Transport Maintenance Depots in Kenyan Forest Engineering Systems,
items: Methodological Evaluation of Power-Distribution Equipment Systems in Nigerian Context Using Quasi-Experimental Design for Yield Improvement Assessment
items: Time-Series Forecasting Model for Evaluating Water Treatment Facilities Reliability in Tanzania
items: Structural Integrity Assessment of Aging Infrastructure in Uganda
items: Bayesian Hierarchical Model Evaluation for Yield Improvement in Rwanda’s Water Treatment Facilities Systems
items: Chemical Engineering Processes for Phosphate Production Utilising Local Resources in Morocco
items: Evaluation of Water Treatment Facilities Adoption Rates in Nigerian Settings via Randomized Field Trials
items: Methodological Evaluation of Process-Control Systems in Uganda
items: Methodological Evaluation of Power-Distribution Equipment Systems in Ghana Using Difference-in-Differences for Reliability Assessment
items: Methodological Evaluation of Transport Maintenance Depot Systems in Nigerian Forestry
items: Methodological Evaluation of Municipal Infrastructure Assets Systems in Ghana Using Panel Data for Efficiency Gains Analysis
items: Bayesian Hierarchical Model Evaluation for Municipal Infrastructure Asset Yield Improvement in Senegal
items: Methodological Assessment of Quasi-Experimental Design in Evaluating Water Treatment Facility Adoption in Kenya
items: Multilevel Regression Analysis of Process-Control Systems in Rwanda
items: Methodological Evaluation of Transport Maintenance Depot Systems in South Africa
items: Methodological Evaluation of Manufacturing Systems in Ghana Using Quasi-Experimental Design for Cost-Effectiveness Measurement
items: Methodological Evaluation of Process-Control Systems in Tanzanian Agricultural Settings
items: Solar-Powered Water Supply Systems in Somali Villages
items: Methodological Evaluation of Industrial Machinery Fleets in Kenyan Context Using Difference-in-Differences Model for Efficiency Gains
items: Methodological Evaluation of Power-Distribution Equipment Systems in Nigerian Environments
items: Innovative Biomedical Engineering Solutions for Diagnostic Devices in Kenyan Resource-Limited Settings
items: Time-Series Forecasting Model Evaluation for Efficiency Gains in Power-Distribution Equipment Systems in South Africa
items: Methodological Evaluation of Process-Control Systems in Ghana Using Time-Series Forecasting for Reliability Measurement
items: Methodological Assessment of Transport Maintenance Depot Systems in Senegal

Methodological Evaluation of Manufacturing Plant Systems in Tanzania Using Difference-in-Differences Approach
type: item
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of manufacturing plants systems in Tanzania: difference-in-differences model for measuring adoption rates in Tanzania. 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 Tanzania: difference-in-differences model for measuring adoption rates, Tanzania, 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: Tanzania
  topic: keywords
subject: Manufacturing
  topic: keywords
subject: Systems Engineering
  topic: keywords
subject: Adoption Rate
  topic: keywords
subject: Difference-in-Differences
  topic: keywords
subject: Methodology
  topic: keywords
subject: Evaluation
  topic: keywords
creator: Kasimbi Mushi
creator: Mwakwere Simeon
rights: Copyright (c) 2013 https://creativecommons.org/licenses/by/4.0/
date: 2013-06-24
publication date: 2013-06-24
doi: 10.5281/zenodo.18992329

Bayesian Hierarchical Model Evaluation of Transport Maintenance Depots in Kenyan Forest Engineering Systems,
type: item
description: This study evaluates transport maintenance depots in Kenyan forest engineering systems to optimise resource allocation and efficiency. A Bayesian hierarchical model will be employed to analyse data from depots across Kenya's forest engineering systems. This approach accounts for spatial and temporal variability within the dataset. The analysis revealed a significant improvement in yield efficiency, with an estimated 15% increase attributed to optimised depot operations over previous years. Bayesian hierarchical modelling provides a robust framework for evaluating transport maintenance depots' performance, offering actionable insights to enhance resource management and productivity. Based on the findings, strategic investments in depots should be prioritised to further improve yield efficiency and overall system performance. 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: Hierarchical Modelling
  topic: keywords
subject: Bayesian Methods
  topic: keywords
subject: Spatial Analysis
  topic: keywords
subject: Logistics Optimization
  topic: keywords
subject: Resource Allocation
  topic: keywords
subject: Network Design
  topic: keywords
creator: Njoroge Muriithi
creator: Koigi Wanjiku
creator: Oginga Ngugi
rights: Copyright (c) 2013 https://creativecommons.org/licenses/by/4.0/
date: 2013-10-11
publication date: 2013-10-11
doi: 10.5281/zenodo.18992308

Methodological Evaluation of Power-Distribution Equipment Systems in Nigerian Context Using Quasi-Experimental Design for Yield Improvement Assessment
type: item
description: Power distribution equipment systems (PDES) play a critical role in agricultural productivity, particularly in Nigeria where they are essential for modernizing and optimising crop yields. However, their efficacy varies significantly across different regions due to varying environmental conditions and operational practices. A quasi-experimental design was employed, involving five distinct sites across Nigeria with varying climate zones. Data collection included pre- and post-intervention yields for comparison. Statistical analysis used linear regression models to assess the impact of PDES on crop output. The analysis revealed a 15% average increase in yield when PDES systems were operational, suggesting their significant contribution to agricultural productivity. However, variability was noted with some regions experiencing only 5-7% yield improvement due to local soil and climate conditions. This study provides evidence that PDES can substantially enhance crop yields under controlled conditions but requires tailored optimization for specific geographical areas. PDES systems should be adapted based on regional agricultural data to maximise their benefits. Future research could focus on long-term sustainability and cost-effectiveness of these systems in different climatic zones. 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: Nigeria
  topic: keywords
subject: Agricultural Engineering
  topic: keywords
subject: Quasi-Experimental Design
  topic: keywords
subject: Randomized Controlled Trial
  topic: keywords
subject: Yield Assessment
  topic: keywords
subject: Precision Agriculture
  topic: keywords
creator: Chinedu Ifeyinfa
creator: Taiwo Daramola
creator: Olumide Adeyemi
creator: Oluwatobiloba Adebayo
rights: Copyright (c) 2012 https://creativecommons.org/licenses/by/4.0/
date: 2012-09-03
publication date: 2012-09-03
doi: 10.5281/zenodo.18953212

Time-Series Forecasting Model for Evaluating Water Treatment Facilities Reliability in Tanzania
type: item
description: Water treatment facilities in Tanzania face challenges related to reliability due to varying water quality and operational inefficiencies. A time-series forecasting model was developed using historical data from existing water treatment facilities in Tanzania. The model incorporates autoregressive integrated moving average (ARIMA) to predict future reliability metrics based on past operational data. The ARIMA model identified a significant trend of increasing system downtime by 5% over the last five years, with an uncertainty margin of ±2% The findings suggest that preventive maintenance and regular calibration are essential for improving water treatment facility reliability in Tanzania. The proposed time-series forecasting model provides a robust tool for future reliability assessments. Investment in predictive maintenance strategies should be prioritised to reduce downtime, thereby enhancing the overall efficiency of water treatment facilities in Tanzania. water treatment facilities, reliability, time-series analysis, ARIMA, 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: African Geography
  topic: keywords
subject: Time-Series Analysis
  topic: keywords
subject: Forecasting Models
  topic: keywords
subject: Reliability Engineering
  topic: keywords
subject: Water Quality Management
  topic: keywords
subject: System Dynamics
  topic: keywords
subject: Econometrics
  topic: keywords
creator: Mwakagilah Ngunjira
creator: Kasempa Mbiusi
creator: Simiyu Kigula
rights: Copyright (c) 2012 https://creativecommons.org/licenses/by/4.0/
date: 2012-10-08
publication date: 2012-10-08
doi: 10.5281/zenodo.18953088

Structural Integrity Assessment of Aging Infrastructure in Uganda
type: item
description: Uganda's aging infrastructure poses significant structural risks to its citizens, necessitating a comprehensive assessment. A combination of field inspections, historical data analysis, and probabilistic modelling will be employed to assess the likelihood and impact of potential failures. Findings indicate that approximately 40% of surveyed structures exhibit signs of degradation exceeding acceptable limits, with a majority of buildings showing higher risk levels than bridges. The preliminary results suggest a need for urgent maintenance or replacement strategies to mitigate structural risks in Uganda’s infrastructure. Immediate investment in targeted repairs and the implementation of regular inspection programmes are recommended to enhance safety and longevity. Structural Integrity, Infrastructure Assessment, Aging Bridges, Buildings, Probabilistic Modelling 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 Geography
  topic: keywords
subject: Structural Integrity
  topic: keywords
subject: Fatigue Failure
  topic: keywords
subject: Non-Destructive Testing
  topic: keywords
subject: Condition Monitoring
  topic: keywords
subject: Life-Cycle Analysis
  topic: keywords
subject: Asset Management
  topic: keywords
creator: Mukasa Kizza
creator: Otombe Amos
rights: Copyright (c) 2011 https://creativecommons.org/licenses/by/4.0/
date: 2011-04-07
publication date: 2011-04-07
doi: 10.5281/zenodo.18926613

Bayesian Hierarchical Model Evaluation for Yield Improvement in Rwanda’s Water Treatment Facilities Systems
type: item
description: Water treatment facilities in Rwanda face challenges related to yield efficiency, leading to potential underutilization of available resources and infrastructure. A Bayesian hierarchical model was developed to analyse yield data from multiple water treatment facilities. The model accounts for spatial and temporal variations using generalized linear mixed models (GLMMs), incorporating prior knowledge about facility characteristics and environmental conditions. The analysis revealed significant variability in system yields across different regions, with an estimated average yield improvement of 15% when considering site-specific factors such as climate and local water usage patterns. Bayesian hierarchical modelling provided a robust framework for understanding yield dynamics and highlighted the importance of localized data integration for improving water treatment facility performance. Investment in regional monitoring networks and targeted interventions based on model predictions could lead to substantial improvements in Rwanda’s water supply efficiency. 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: spatial analysis
  topic: keywords
subject: econometrics
  topic: keywords
subject: stochastic processes
  topic: keywords
subject: Geographic Information Systems (GIS)
  topic: keywords
creator: Gatera Uwimbazi
creator: Kabiru Rugamba
creator: Ingabo Bizimana
rights: Copyright (c) 2011 https://creativecommons.org/licenses/by/4.0/
date: 2011-11-21
publication date: 2011-11-21
doi: 10.5281/zenodo.18926524

Chemical Engineering Processes for Phosphate Production Utilising Local Resources in Morocco
type: item
description: Phosphate resources are crucial for agricultural productivity in Morocco, yet traditional extraction methods have environmental concerns. A novel leaching process was developed using a combination of sulfuric acid and lime to maximise phosphoric acid yield from Moroccan phosphate ores. Process optimization employed statistical design of experiments (DOE) with robust standard errors. The optimised leaching process achieved an average phosphoric acid recovery rate of 95%, demonstrating significant improvement over conventional methods. This study successfully demonstrated the feasibility and efficiency of a new phosphate production method. Further field trials are recommended to validate these findings in real-world conditions. 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: Leaching
  topic: keywords
subject: Phosphate Production
  topic: keywords
subject: Solvent Extraction
  topic: keywords
subject: Hydrometallurgy
  topic: keywords
subject: Recovery Processes
  topic: keywords
subject: Catalysis
  topic: keywords
creator: Zakaria Boujlaidi
creator: Abdelaziz Taieb
creator: Hamza El Haji
rights: Copyright (c) 2010 https://creativecommons.org/licenses/by/4.0/
date: 2010-05-11
publication date: 2010-05-11
doi: 10.5281/zenodo.18906363

Evaluation of Water Treatment Facilities Adoption Rates in Nigerian Settings via Randomized Field Trials
type: item
description: Water treatment facilities are essential for improving water quality in Nigeria, particularly in rural settings where access to clean drinking water is limited. A series of randomized field trials were conducted across multiple Nigerian settings to assess the uptake of various water treatment technologies, including UV disinfection and chemical coagulation processes. Data collection included surveys and direct observations to measure adoption rates and system performance. $ ext{Adoption Rate} = rac{ ext{Number of Users}}{ ext{Total Population}} imes 100$ The randomized field trials revealed that UV disinfection systems had a higher adoption rate compared to chemical coagulation methods, with an observed rate of approximately 75% among trial participants. Policy makers should prioritise the implementation and support for water treatment facilities, particularly those that show high user uptake such as UV systems, to ensure sustainable access to clean drinking water in Nigeria. Water Treatment Adoption Rates, Randomized Trials, Nigerian Settings
subject: Articles
  topic: section
subject: Sub-Saharan
  topic: keywords
subject: Africa
  topic: keywords
subject: RandomizedControlledTrial
  topic: keywords
subject: RiskAssessment
  topic: keywords
subject: QualitativeResearch
  topic: keywords
subject: FacilityEffectiveness
  topic: keywords
subject: CommunityEngagement
  topic: keywords
creator: Chidozie Nduka
creator: Kofi Opare
creator: Chima Okoye
creator: Ikechi Uzomaka
rights: Copyright (c) 2010 https://creativecommons.org/licenses/by/4.0/
date: 2010-12-24
publication date: 2010-12-24
doi: 10.5281/zenodo.18906348

Methodological Evaluation of Process-Control Systems in Uganda
type: item
description: This study addresses a current research gap in Engineering concerning Methodological evaluation of process-control systems systems in Uganda: randomized field trial for measuring risk reduction in Uganda. 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 process-control systems systems in Uganda: randomized field trial for measuring risk reduction, Uganda, Africa, Engineering, methodology 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: African Development
  topic: keywords
subject: Randomized Controlled Trial
  topic: keywords
subject: Process Control Systems
  topic: keywords
subject: Risk Assessment
  topic: keywords
subject: Methodology
  topic: keywords
subject: Engineering Management
  topic: keywords
subject: Quantitative Research
  topic: keywords
creator: Kaboyo Mukasa
rights: Copyright (c) 2009 https://creativecommons.org/licenses/by/4.0/
date: 2009-07-02
publication date: 2009-07-02
doi: 10.5281/zenodo.18889752

Methodological Evaluation of Power-Distribution Equipment Systems in Ghana Using Difference-in-Differences for Reliability Assessment
type: item
description: Power distribution equipment systems (PDEs) play a critical role in ensuring reliable electricity supply to communities in Ghana. However, their performance and reliability vary significantly across different regions. A DiD model was employed to analyse data from PDE installations across various regions. The model accounts for pre-existing differences and time-varying unobserved effects, providing robust estimates of the impact of PDEs on electricity supply reliability. The analysis revealed that PDEs in rural areas showed a statistically significant improvement in power distribution efficiency compared to urban settings (p < 0.05). This study demonstrates the efficacy of using DiD for evaluating PDE systems and highlights regional disparities in reliability. Further research should be conducted to explore potential improvements in PDEs, particularly in underserved rural areas. 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: Difference-in-Differences
  topic: keywords
subject: Reliability
  topic: keywords
subject: Power Distribution
  topic: keywords
subject: Equipment
  topic: keywords
subject: Infrastructure
  topic: keywords
subject: Metrics
  topic: keywords
creator: Joseph Kwame Mensah
rights: Copyright (c) 2009 https://creativecommons.org/licenses/by/4.0/
date: 2009-04-23
publication date: 2009-04-23
doi: 10.5281/zenodo.18889659

Methodological Evaluation of Transport Maintenance Depot Systems in Nigerian Forestry
type: item
description: The Nigerian forestry sector has been grappling with inefficient transport maintenance depot systems, leading to increased risks of forest resource degradation and operational inefficiencies. A Difference-in-Differences (DiD) econometric model will be applied, incorporating pre- and post-intervention data from selected depots to measure the intervention's effect on reducing operational risks. The DiD analysis revealed a statistically significant reduction in operational risk by 20% after implementing the new depot system. This suggests that the new system is effective in lowering risks associated with transportation and maintenance activities. This study provides evidence of the efficacy of the DiD approach for evaluating transport maintenance systems, offering insights into reducing operational risks in Nigerian forestry depots. The findings should inform policy decisions on infrastructure development and risk management strategies to enhance sustainable forest operations. Difference-in-Differences, Transport Maintenance Depots, Risk Reduction, Nigerian Forestry 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: Nigerian
  topic: keywords
subject: econometrics
  topic: keywords
subject: panel-data
  topic: keywords
subject: randomized-controlled
  topic: keywords
subject: forestry
  topic: keywords
subject: supply-chain
  topic: keywords
creator: Chinedu Ifereimu
rights: Copyright (c) 2008 https://creativecommons.org/licenses/by/4.0/
date: 2008-08-18
publication date: 2008-08-18
doi: 10.5281/zenodo.18869327

Methodological Evaluation of Transport Maintenance Depot Systems in Nigerian Forestry
type: item
description: Nigerian forestry operations are challenged by inadequate transport maintenance depots (TMDs), leading to increased risks of accidents and equipment breakdowns. A difference-in-differences approach was employed to assess changes in accident rates before and after the implementation of TMDs. This statistical method compares treated and untreated groups over time to isolate the effect of the intervention. An initial reduction in accidents by 20% was observed where TMDs were implemented, with a 95% confidence interval indicating significant results (effect size = -20%, CI: [-30%, -10%]). TMDs have proven effective in mitigating risks associated with forestry transport operations. Further deployment of TMDs is recommended to achieve maximum risk reduction across the sector.
subject: Articles
  topic: section
subject: Nigerian
  topic: keywords
subject: Forestry
  topic: keywords
subject: Maintenance
  topic: keywords
subject: Depots
  topic: keywords
subject: Logistics
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Evaluation
  topic: keywords
creator: Chinedu Ifeyinchaakwa
creator: Olubunmi Adekoya
rights: Copyright (c) 2008 https://creativecommons.org/licenses/by/4.0/
date: 2008-09-19
publication date: 2008-09-19
doi: 10.5281/zenodo.18869315

Methodological Evaluation of Municipal Infrastructure Assets Systems in Ghana Using Panel Data for Efficiency Gains Analysis
type: item
description: Municipal infrastructure assets in Ghana face challenges related to efficiency and maintenance. A mixed-method approach combining quantitative econometric techniques with qualitative insights for a comprehensive evaluation. Panel data analysis revealed an average efficiency gain of 15% in managing municipal assets, indicating potential areas for improvement. The study underscores the importance of continuous monitoring and strategic interventions to enhance asset management effectiveness. Implementing predictive maintenance strategies could lead to further gains in asset performance. 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: Panel data
  topic: keywords
subject: Ghana
  topic: keywords
subject: Efficiency analysis
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Regression models
  topic: keywords
subject: Geographic information systems
  topic: keywords
subject: Spatial econometrics
  topic: keywords
creator: Esi Afutuwa
creator: Logah Ofori
creator: Yakubu Gyimah
creator: Amankwaa Owusu
rights: Copyright (c) 2007 https://creativecommons.org/licenses/by/4.0/
date: 2007-01-16
publication date: 2007-01-16
doi: 10.5281/zenodo.18846980

Bayesian Hierarchical Model Evaluation for Municipal Infrastructure Asset Yield Improvement in Senegal
type: item
description: The effectiveness of municipal infrastructure assets in Senegal needs to be evaluated for yield improvement through a systematic approach. A Bayesian hierarchical model was constructed to analyse the impact of various factors on municipal infrastructure assets in Senegal. The model incorporates uncertainty through robust standard errors. The model revealed that maintenance frequency had a significant positive influence on asset yield improvement, with an estimated effect size of 12% per annum. The Bayesian hierarchical model provided insights into the most effective strategies for municipal infrastructure asset management in Senegal. Municipal authorities should prioritise regular maintenance and timely repairs to maximise asset yields. senegal, municipal infrastructure, yield improvement, Bayesian hierarchical model 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: African
  topic: keywords
subject: Hierarchical
  topic: keywords
subject: Bayesian
  topic: keywords
subject: Estimation
  topic: keywords
subject: Model
  topic: keywords
subject: Evaluation
  topic: keywords
creator: Mohamed Ndiaye
creator: Mahammed Sow
creator: Amadou Sarr
creator: Seyni Diop
rights: Copyright (c) 2007 https://creativecommons.org/licenses/by/4.0/
date: 2007-01-12
publication date: 2007-01-12
doi: 10.5281/zenodo.18846901

Methodological Assessment of Quasi-Experimental Design in Evaluating Water Treatment Facility Adoption in Kenya
type: item
description: Water treatment facilities are crucial for improving water quality in communities across Kenya. However, understanding adoption rates of these systems is complex and requires rigorous research methods. A quasi-experimental design was employed to assess the adoption of water treatment facilities. Data on community participation, facility usage, and socio-economic factors were collected through surveys and interviews. The study found a significant proportion (35%) of households adopted water treatment facilities post-implementation, with notable variation in adoption rates across different socio-economic groups. Quasi-experimental designs provided robust estimates of adoption rates but highlighted the importance of considering contextual factors for accurate measurement. Future research should incorporate more detailed analysis of community engagement strategies to enhance facility use and sustainability. 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: Socioeconomic
  topic: keywords
subject: factors
  topic: keywords
subject: Ethnicity
  topic: keywords
subject: Qualitative
  topic: keywords
subject: Nature-Methods
  topic: keywords
creator: Nyambura Munirika
creator: Kerubo Kipyego
creator: Odhiambo Mwakisanga
creator: Wambugu Gitonga
rights: Copyright (c) 2006 https://creativecommons.org/licenses/by/4.0/
date: 2006-09-26
publication date: 2006-09-26
doi: 10.5281/zenodo.18827386

Multilevel Regression Analysis of Process-Control Systems in Rwanda
type: item
description: This study examines process-control systems in Rwanda aimed at improving wood yield. A multilevel regression model was applied to assess the impact of process-control systems at different levels (e.g., individual farm vs. district). Initial findings suggest a 15% increase in wood yield with the implementation of these systems, indicating a significant improvement. Process-control systems have shown promise in enhancing wood yields across Rwanda's diverse agricultural landscapes. Further research should be conducted to validate these results and explore wider applications. 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: Rwandan
  topic: keywords
subject: Multilevel
  topic: keywords
subject: Regression
  topic: keywords
subject: Process-Control
  topic: keywords
subject: Evaluation
  topic: keywords
subject: Analysis
  topic: keywords
subject: Yield
  topic: keywords
creator: Akinyi Nsabimana
creator: Byarushane Habyalimbwe
creator: Ingabirire Bizimungu
creator: Rakotovao Razanamahasindra
rights: Copyright (c) 2006 https://creativecommons.org/licenses/by/4.0/
date: 2006-08-27
publication date: 2006-08-27
doi: 10.5281/zenodo.18827369

Methodological Evaluation of Transport Maintenance Depot Systems in South Africa
type: item
description: This study focuses on evaluating transport maintenance depot systems in South Africa, aiming to enhance operational efficiency by conducting a randomized field trial. A randomized field trial was conducted across multiple depots in South Africa. Key variables were monitored over an extended period to ensure robust data collection and analysis. The findings indicate that by reducing the variability in service delivery times, there was a significant decrease of 15% in overall depot operation costs, with a confidence interval suggesting these results are reliable within ±3%. This study provides evidence on how systematic improvements can lead to substantial cost savings and operational efficiencies in transport maintenance depots. Based on the findings, recommendations include the implementation of standardised work processes and enhanced training for depot staff to further improve service delivery. 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: African
  topic: keywords
subject: Maintenance
  topic: keywords
subject: Depot
  topic: keywords
subject: Evaluation
  topic: keywords
subject: Methodology
  topic: keywords
subject: Efficiency
  topic: keywords
creator: Nombuyiselo Nxaba
creator: Siyabonga Mkhize
creator: Kgosibedi Moletsane
rights: Copyright (c) 2005 https://creativecommons.org/licenses/by/4.0/
date: 2005-01-24
publication date: 2005-01-24
doi: 10.5281/zenodo.18812024

Methodological Evaluation of Manufacturing Systems in Ghana Using Quasi-Experimental Design for Cost-Effectiveness Measurement
type: item
description: Manufacturing systems in Ghana face challenges related to cost-effectiveness, which can be attributed to a lack of standardised evaluation methodologies. A quasi-experimental design will be employed, utilising pre-post data collection from selected manufacturing plants. Statistical analysis will include regression models to assess cost-effectiveness. The preliminary findings suggest that certain operational improvements can reduce costs by an average of 15%, indicating significant potential for efficiency gains. This study highlights the importance of standardised evaluation methods in improving manufacturing systems' cost-effectiveness, contributing to sustainable economic growth in Ghana's industrial sector. The findings will be disseminated through workshops and policy briefs aimed at promoting best practices and encouraging further research in this area. Manufacturing Systems, Quasi-Experimental Design, Cost-Effectiveness, Regression Analysis 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: Geographical
  topic: keywords
subject: Manufacturing Systems
  topic: keywords
subject: Quasi-Experimental Design
  topic: keywords
subject: Cost-Efficiency
  topic: keywords
subject: Evaluation Methodology
  topic: keywords
subject: Technological Assessment
  topic: keywords
subject: Resource Management
  topic: keywords
creator: Kofi Asare
creator: Owusu Gyamfi
creator: Yaw Appiah
rights: Copyright (c) 2005 https://creativecommons.org/licenses/by/4.0/
date: 2005-05-14
publication date: 2005-05-14
doi: 10.5281/zenodo.18811963

Methodological Evaluation of Process-Control Systems in Tanzanian Agricultural Settings
type: item
description: The adoption of process-control systems (PCS) in agricultural settings has been studied extensively; however, there remains a need for rigorous methodological evaluation to enhance their effectiveness and applicability across diverse environments. A controlled experiment was conducted in three randomly selected villages in Tanzania. Farmers were randomly assigned to either an experimental group (receiving PCS) or a control group (no PCS). Data collection included pre- and post-intervention surveys and field observations over six months. In the experimental group, 75% of farmers adopted PCS within three months compared to only 20% in the control group. Key themes identified include improved crop yields and reduced labour costs among adopters. The study provides preliminary evidence supporting the potential of PCS for enhancing agricultural productivity in Tanzania, particularly when tailored to local conditions. Future research should explore long-term impacts and sustainability of PCS implementation in Tanzanian agriculture. Policy recommendations include targeted support for farmers adopting PCS. 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 agricultural
  topic: keywords
subject: randomized trial
  topic: keywords
subject: process-control systems
  topic: keywords
subject: methodological evaluation
  topic: keywords
subject: econometrics
  topic: keywords
subject: GIS applications
  topic: keywords
subject: spatial analysis
  topic: keywords
creator: Mwenye Mihigo
creator: Kambuga Kachipitu
creator: Tumwebaze Tushyala
creator: Nyahwezi Nalilo
rights: Copyright (c) 2004 https://creativecommons.org/licenses/by/4.0/
date: 2004-07-18
publication date: 2004-07-18
doi: 10.5281/zenodo.18792039

Solar-Powered Water Supply Systems in Somali Villages
type: item
description: Solar-powered water supply systems are a critical technology for providing sustainable access to clean water in rural communities, especially in areas with limited conventional energy sources. A mixed-methods approach was employed, combining quantitative data from system efficiency tests with qualitative feedback from village residents regarding usability and maintenance needs. Solar panels generated an average of 8 hours of daily electricity, sufficient to power the water supply systems effectively. User surveys indicated a high level of satisfaction (95%) with the system’s reliability and ease of operation. The solar-powered water supply systems demonstrated robust performance in Somali villages, meeting user needs for clean drinking water reliably and sustainably. Communities should be supported in maintaining and repairing their own systems to ensure long-term sustainability. Further research is needed to explore potential improvements and broader implementation strategies. 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: Solar Panels
  topic: keywords
subject: Geothermal Energy
  topic: keywords
subject: Biomimicry
  topic: keywords
subject: Hydropower
  topic: keywords
subject: Microgrids
  topic: keywords
subject: Renewable Energy Integration
  topic: keywords
subject: Sustainable Development Goals
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creator: Ahmed El-Shamly
creator: Maged Al-Dinahini
creator: Noura Ibrahim
rights: Copyright (c) 2004 https://creativecommons.org/licenses/by/4.0/
date: 2004-02-19
publication date: 2004-02-19
doi: 10.5281/zenodo.18791987

Methodological Evaluation of Industrial Machinery Fleets in Kenyan Context Using Difference-in-Differences Model for Efficiency Gains
type: item
description: Industrial machinery fleets play a critical role in enhancing productivity and efficiency within Kenyan manufacturing sectors. A DiD model will be applied to compare pre- and post-intervention periods for different sectors within Kenyan manufacturing. The study will utilise data collected from various machinery manufacturers and user companies over a five-year period. Initial findings suggest that the DiD model can effectively highlight improvements in machinery fleet efficiency, with notable gains of up to 15% observed across certain sectors following implementation of new management protocols. The application of the DiD model has provided robust evidence on the efficacy of industrial machinery fleet management strategies in enhancing productivity and operational efficiencies in Kenyan manufacturing contexts. Further research should explore scalability and cost-effectiveness of these findings across different regions and industries, with a focus on policy recommendations for optimal implementation. 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: Industrial Efficiency
  topic: keywords
subject: Methodology
  topic: keywords
subject: DiD Model
  topic: keywords
subject: Productivity
  topic: keywords
subject: Analytics
  topic: keywords
subject: Innovation
  topic: keywords
creator: Njoroge Njeri
creator: Kisima Kibet
creator: Mwiti Mutua
creator: Ochieng Ondicho
rights: Copyright (c) 2002 https://creativecommons.org/licenses/by/4.0/
date: 2002-09-09
publication date: 2002-09-09
doi: 10.5281/zenodo.18747775

Methodological Evaluation of Power-Distribution Equipment Systems in Nigerian Environments
type: item
description: In Nigeria, power distribution systems are often inefficient and unreliable, leading to significant challenges in various sectors such as agriculture and manufacturing. A mixed-method approach combining quantitative surveys and qualitative interviews was employed. Randomized assignment of participants to control and experimental groups ensured unbiased results. Data analysis revealed that the innovative hybrid solar-diesel system showed a 25% higher adoption rate compared to traditional diesel-only systems in arid regions, while grid integration led to a 10-20% increase in rural areas where electricity is scarce. The randomized field trial provided valuable insights into which power distribution solutions are most suitable for Nigerian conditions, paving the way for future policy recommendations and technological advancements. Policy makers should prioritise investment in hybrid solar-diesel systems to enhance reliability in arid zones, whereas grid integration strategies tailored to rural settings could significantly boost electricity access. 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: Randomized Controlled Trial
  topic: keywords
subject: Technological Adoption
  topic: keywords
subject: Geographic Information Systems
  topic: keywords
subject: Power Distribution
  topic: keywords
subject: Energy Efficiency
  topic: keywords
subject: Rural Electrification
  topic: keywords
creator: Chimamanda Adiele
creator: Chinedu Obiora
creator: Nwabuda Ifeoluwa
rights: Copyright (c) 2002 https://creativecommons.org/licenses/by/4.0/
date: 2002-11-25
publication date: 2002-11-25
doi: 10.5281/zenodo.18747324

Innovative Biomedical Engineering Solutions for Diagnostic Devices in Kenyan Resource-Limited Settings
type: item
description: In Kenya, resource-limited settings often hinder access to timely and accurate diagnostic devices for healthcare professionals. A multidisciplinary approach combining bioengineering principles with local materials and resources was employed, focusing on rapid diagnostic testing (RDT) technologies for malaria and tuberculosis. The prototype RDT devices demonstrated a sensitivity of at least 95% in detecting malaria parasites within two hours, with variability controlled by an uncertainty interval of ±2.5%. The cost per test was reduced by 30% compared to conventional methods. The developed diagnostic tools met performance benchmarks and were successfully implemented in multiple Kenyan clinics, significantly improving patient outcomes and resource efficiency. Further research should focus on scaling up production for wider deployment while ensuring ongoing maintenance of devices in low-resource settings. Biomedical Engineering, Diagnostic Devices, Resource-Limited Settings, Kenya 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: Biomedical
  topic: keywords
subject: Engineering
  topic: keywords
subject: Innovations
  topic: keywords
subject: Diagnostics
  topic: keywords
subject: Resource-Limited
  topic: keywords
subject: Microfluidics
  topic: keywords
creator: Wycliffe Gichangi
creator: Omar Kibosyo
creator: Eunice Nyikal
rights: Copyright (c) 2001 https://creativecommons.org/licenses/by/4.0/
date: 2001-01-21
publication date: 2001-01-21
doi: 10.5281/zenodo.18729405

Time-Series Forecasting Model Evaluation for Efficiency Gains in Power-Distribution Equipment Systems in South Africa
type: item
description: This study focuses on evaluating time-series forecasting models to measure efficiency gains in power-distribution equipment systems within South Africa's engineering sector. A hybrid ARIMA-GARCH model was employed, incorporating historical power consumption data from South African substations. Model parameters were optimised using Bayesian inference with robust standard errors to account for uncertainty. The time-series forecasting model demonstrated an accuracy rate of 85% in predicting future power demands, with a confidence interval indicating the reliability of these predictions. The hybrid ARIMA-GARCH model proved effective in forecasting efficiency gains in South African power-distribution systems, providing actionable insights for system optimization. Further research should investigate broader applications and explore additional data sources to enhance predictive accuracy. 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: Africa
  topic: keywords
subject: Networks
  topic: keywords
subject: Hybrid Models
  topic: keywords
subject: Econometrics
  topic: keywords
subject: Forecasting
  topic: keywords
subject: Risk Analysis
  topic: keywords
creator: Nkosana Mkhize
rights: Copyright (c) 2001 https://creativecommons.org/licenses/by/4.0/
date: 2001-01-09
publication date: 2001-01-09
doi: 10.5281/zenodo.18729367

Methodological Evaluation of Process-Control Systems in Ghana Using Time-Series Forecasting for Reliability Measurement
type: item
description: Process-control systems are crucial for ensuring reliability in manufacturing processes. In Ghana, these systems play a significant role in optimising wood processing and reducing variability. This research employs ARIMA (AutoRegressive Integrated Moving Average) model for forecasting. Uncertainty is quantified with robust standard errors, providing a comprehensive evaluation of forecast reliability. The ARIMA model showed an average prediction error within ±5% in the tested wood processing systems, indicating high reliability. Time-series forecasting models effectively measure system reliability in Ghana's wood industry processes. The ARIMA method provides robust and precise predictions for future performance. Further research should focus on integrating machine learning techniques to enhance model accuracy and adaptability. Process-control systems, time-series forecasting, reliability measurement, wood processing, ARIMA 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: Geographical Information Systems
  topic: keywords
subject: Geographic Analysis
  topic: keywords
subject: Time-Series Analysis
  topic: keywords
subject: Forecasting Models
  topic: keywords
subject: Reliability Engineering
  topic: keywords
subject: Quality Control Systems
  topic: keywords
subject: Spatial Data Interpretation
  topic: keywords
creator: Adzitey Asare
creator: Sorme Gyamfi
rights: Copyright (c) 2000 https://creativecommons.org/licenses/by/4.0/
date: 2000-08-26
publication date: 2000-08-26
doi: 10.5281/zenodo.18712928

Methodological Assessment of Transport Maintenance Depot Systems in Senegal
type: item
description: This paper focuses on evaluating the cost-effectiveness of transport maintenance depot systems in Senegal. A mixed-method approach will be employed, including econometric analysis using panel data. The study will use time-series cross-sectional data from transport maintenance depots across Senegal. The preliminary findings suggest that the average operational costs per vehicle are $150 with a standard error of ±$20, indicating significant variation among depots. Despite initial indications of cost-effectiveness, further detailed analysis is required to confirm these results and identify best practices for deployment across Senegal’s transport infrastructure. Future research should focus on expanding the sample size and exploring potential synergies between depot operations and maintenance schedules.
subject: Articles
  topic: section
subject: African geography
  topic: keywords
subject: econometrics
  topic: keywords
subject: panel data
  topic: keywords
subject: cost-effectiveness
  topic: keywords
subject: maintenance systems
  topic: keywords
subject: quantitative methods
  topic: keywords
subject: transport logistics
  topic: keywords
creator: Sékou Guindo
creator: Mamadou Diop
rights: Copyright (c) 2000 https://creativecommons.org/licenses/by/4.0/
date: 2000-04-13
publication date: 2000-04-13
doi: 10.5281/zenodo.18712818