• Dual-band fractal antenna with concentric ring-shaped defected ground plane structure 

  Miring’u, Edwin Kimani; Langat, Kibet; Konditi, D. B. O. (JKUAT-COETEC, 2025-01-27)

  This paper proposes the design of improved dual-band micro-strip antennas through the use of concentric rectangular fractals in the patch, and a ground plane with a concentric ring-shaped defected ground plane structure, ...
• Distribution Generation and Capacitor Placement in Distribution Systems 

  Chege, Simon N.; Murage, David K.; Kihato, Peter K. (JKUAT-COETEC, 2025-01-17)

  Distribution systems form a critical part of the power system by linking the consumer to the transmission system. Distribution systems are extensive, complex and require adequate planning to ensure reliability and reduce ...
• Continuous decontamination of metal-polluted mine water using engineered hybrid adsorbent 

  Muliwa, A. M.; Onyango, M.S.; Maity, A.; Ochieng, A. (JKUAT-COETEC, 2025-01-17)

  Mining industries contribute enormously to water pollution through discharge of effluents contaminated with metals. Metals-polluted water is a threat to aquatic and human lives as well as the general ecosystem. Numerous ...
• Comparing the performance of ANFIS, PSO- ANFIS and PSO-ANFIS with random input in indoor Wi-Fi Signal propagation prediction 

  Omae, M. O; Ndungu, E. N; Kibet, P. L. (JKUAT-COETEC, 2025-01-17)

  With the increase in the use of mobile devices fitted with wireless local area networks (WLANS) technologies there is need for accelerated studies on these systems to improve on the quality of service (QoS) provided to the ...
• Classification of drying methods for macadamia nuts based on the glcm texture parameters 

  Njuguna, Simon N.; Ondimu, Stephen; Kenji, Glaston M. (JKUAT-COETEC, 2025-01-17)

  Texture is an important feature in the definition of the external appearance of a material. In this study, Gray-level co- occurrence matrix (GLCM) was used in the analysis of image texture without the destruction of the ...
• Assessment of Voltage Stability Indices for Determination of Power System Weak Buses. 

  Koskei, Weldon K.; Murage, David K.; Kangethe, Samuel; Saulo, Michael J. (JKUAT-COETEC, 2025-01-17)

  The ever growing population and the high level of industrialization globally has led to increase demand for electric power. However, the expansion of electric power generation as well as transmission and distribution power ...
• Architectures and Algorithms for Multiple UAV Cooperative control: A Review 

  Muchiri, Nelson; Kamau, S.I; Ikua, B.W (JKUAT-COETEC, 2025-01-17)

  For multiple unmanned Aerial Vehicles to collaborate in execution of a mission, a design of the mission, tasks and way points is first developed. Core to the design is determination of proper architecture and practical ...
• Advances in Friction-stir Processing of Aluminium Alloys 

  Wang’ombe, Daniel N.; Maranga, Stephen M.; Mose, Bruno R.; Mbuya, Thomas O. (JKUAT-COETEC, 2025-01-17)

  Friction-stir processing (FSP) is an inspirational approach to the enhancement of metal properties through grain refinement, homogenization of second phase particles, elimination of defects like porosity, and surface ...
• A Step-By-Step Approach to Retrofit and Automation of PCB Machines Using PLC 

  Kamau, John Nyutu (JKUAT-COETEC, 2025-01-17)

  Retrofitting of machine has today become very popular for manufacturing and processing in small, medium and large industries as demand for high quality, greater efficiency and automated machines increase by day. It offers ...
• A Review on Optimal Network Reconfiguration in the Radial Distribution System using Optimization Techniques 

  Juma, S A; Ngoo, L M; Muriithi, C M (JKUAT-COETEC, 2025-01-17)

  Distribution network systems face many problems, mostly of enormous power losses compared to the rest of the network, which lead to poor performance and degradation of the system and components. For maximum benefit of ...
• A Review on Marine Propeller Performance of High Speed Boat Running on an Outboard Engine 

  Gatete, Eugene; Ndiritu, Hiram, M.; Kiplimo, Robert (JKUAT-COETEC, 2025-01-15)

  This paper presents a review of the marine propeller performance. Currently, water transport is very important and for that marine engines performance is necessary. The use of high-speed boats is increasing because of the ...
• A Review on Artificial Neural Network Models for Short Term Wind Power Prediction 

  Mathenge, Joseph N.; Murage, D.K; Nderu, J.N (JKUAT-COETEC, 2025-01-15)

  There has been a growing global need to develop tools or models that are able to perform accurate wind power prediction in a power system. This arises from the fact that modern day power systems have inclined towards using ...
• A Review of Load Flow Methods in Analysis of Power Distribution Systems 

  Chege, Simon N.; Murage, David K.; Kihato, Peter K. (JKUAT-COETEC, 2025-01-15)

  Power systems consist of four important segments namely, generation, transmission, distribution and utilization. Each of these segments require to be planned and operated securely in order to maintain a given frequency and ...
• A Review of Control Strategies for Microgrid with PV-Wind Hybrid Generation Systems 

  Alwal, Linus A.; Kihato, Peter K.; Kamau, Stanley I. (JKUAT-COETEC, 2025-01-15)

  The concept of microgrid has been attracting a lot of interest among researchers and investors over the last decade. This is because it offers a promising technology towards the utilization of distributed renewable energy ...
• A Review of Ball mill grinding process modeling using Discrete Element Method 

  Muhayimana, Philbert; Kimotho, James K; Ndiritu, Hiram M (JKUAT-COETEC, 2025-01-15)

  In the two past decades, the discrete element method (DEM) has been used to model the grinding mill and grinding media motion in mineral processing industries. There have been many different discrete element method models ...
• A Review of Approaches to the Quantification of Operating Reserve Requirements in Systems with Large Scale Wind Power Integration 

  Wamukoya, Brian K.; Ngoko, Bonface O.; Muriithi, Christopher M. (JKUAT-COETEC, 2025-01-15)

  The need to diversify power generation sources, increase security of supply, incorporate sustainability in energy sources and reducing fuel usage and emissions has significantly led to the integration of variable renewable ...
• A comparative study of Minimum Variance Distortionless Response beamforming, Linearly Constrained Minimum Variance beamforming and metaheuristic solved null-steering beamforming 

  Maina, Robert Macharia; Lang’at, Kibet; Kihato, P. K. (JKUAT-COETEC, 2025-01-14)

  Digital beamforming is of paramount significance in addressing wireless communication systems’ capacity enhancement. Among well established digital beamforming mechanisms are Minimum Variance Distortionless Response (MVDR) ...
• Using Internet of Things for Monitoring and Control in Mushroom Production 

  Nyaega, Ezrah; Nyabuti, Allan (JKUAT-COETEC, 2025-01-14)

  For centuries, edible mushrooms have been cultivated, eaten and appreciated for their taste, medicinal value, economic and ecological benefits. In the recent past, production of mushrooms has been steadily increasing and ...
• Use of a Robot to Clean Drainage Structures 

  Nyambane, E. N; Mwaura, C; Kamau, L. (JKUAT-COETEC, 2025-01-14)

  There is need for technology intervention in pollution and flood mitigation. This is because people litter everywhere which not only leads to accumulation of waste products that block the drainage systems but also pollution. ...
• Study of sulphur removal in waste tyre pyrolysis oil using hybrid design 

  Cherop, Peter T. (JKUAT-COETEC, 2025-01-14)

  Waste tyres are very difficult to dispose and there is a growing interest to produce fuel from waste tyres. However, the high sulphur content in the oil obtained from the pyrolysis of waste tyres is a potential obstacle ...

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