Research and Publications: Recent submissions
Now showing items 921-940 of 1146
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A Dialectical Justification of Inclusion of Ignorance in the Definition of Education
(2014)This paper entertains the notion that without their opposites, things, and by extension, human thought would not exist. Without its opposite aspect, each thing or thought loses the condition for its existence. Without life, ... -
The Extent of School Management Support of ICT Tools Integration in Teaching and Learning of Kiswahili Language in Public Secondary Schools in Kenya
(Human Resource Management Academic Research Society, 2018-09)Integration of technology in education is considered all over the world as a strategy of transforming the quality of education. The purpose of the study was to establish the extent of school management support in ICT ... -
Application of Renewable Energies for Storage of Horticultural Produce in Marginal areas of Kenya
(2017)The objective of the research were to a prototype solar-charcoal cooler and test its performance in the temperature development and products storage ability. A prototype solar-charcoal cooler was developed at the Biomechanical ... -
Kinematics of Thermal Inactivation of Peroxidase and color Degradation of African Cowpea (vigna unguiculata) Leaves
(Institute of Food Technologists, 2015)Cow pea leaves form an important part of the diet for many Kenyans, and they are normally consumed after a lengthycookingprocessleadingtotheinactivationofperoxidase(POD)thatcouldbeusedasanindicatorforthepotential shelf ... -
Reducing Real and Reactive Power Losses in the Power Distribution System by DFIG Placement and Sizing Using Ordinary PSO and HGAPSO
(International Journal of Emerging Technology and Advanced Engineering, 2012)Due to the increased importance of DFIGs in optimization of real and reactive power losses and the maintenance of voltage profile, the general methods of DG placement and sizing in the existing literature cannot be ... -
Modelling Simulation and Optimal Sizing of a Hybrid Wind, Solar PV Power System in Northern Kenya
(ational Journal of Renewable Energy Research, 2016)Solar and wind, the most abundant renewable energy resources are still expensive to deploy and are unreliable as they are intermittent. It has long been postulated in open published literature that solar and wind have ... -
Optimal Under - frequency Load Shedding using Cuckoo Search with Levy Flight Algorithm for Frequency Stability Improvement
(International Journal of Emerging Technology and Advanced Engineering, 2015)Frequency stability in a power system is very important as it determines the synchronous speed of electrical machines. Therefore it should remain within acceptable limits even when the system is disturbed. In order to ... -
Optimal Under - voltage Load Shedding using Cuckoo Search with Levy Flight Algorithm for Voltage Stability Improvement
(International Journal of Engineering Science Invention, 2015)Voltage stability has become a serious threat of modern power system operation nowadays. To tackle this problem properly, load shedding is a countermeasure taken as a last resort. However, its consequences might result in ... -
Multi Objective Dynamic Economic Dispatch with Cubic Cost Functions
(Science Publishing Group, 2015)The formulation and solution of the Dynamic Economic Dispatch (DED) problem is one of the key disciplines in modern power system operation, planning, operation and control. Past researches have considered DED on Quadratic ... -
24-Hours Load Forecasting Using a Hybrid of Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) for Optimized Neural Network
(International Journal of Emerging Technology and Advanced Engineering, 2016)Short-term load forecasting (STLF) has emerged as one of the most important fields of study for efficient and reliable operation of power system. It plays a very significant role in the field of load flow analysis, contingency ... -
Voltage Controller for Radial Distribution Networks with Distributed Generation
(International Journal of Scientific and Research Publications, 2014)This paper presents a coordinated network controller whose objective is to maintain an optimal voltage profile across radial distribution networks with distributed generation. This is done by varying the output of the ... -
Alternative Diesel Engine Fuel from Kenyan Pishori Rice Bran
(International Journal of Engineering Science Invention, 2013)Rice bran used as biomass material was acquired from small scale rice millers in Wang’uruMwea, Kirinyaga County, Kenya. The oil was extracted from the rice bran using petroleum ether which was preferred due to its high ... -
Invasive species in east Africa: current status for informed policy decisions and management
(E. Africa: Status and policy in biological invasions, 2013)Invasive alien species are the second leading cause of biodiversity loss in the world today. A number of hypotheses have been advanced to explain the proliferation of invasive species. These hypotheses include deficiency ... -
Comparative analysis of on-farm timber conversion systems in Kenya
(Journal of Horticulture and Forestry, 2013)Exploitation of trees on private farms in Kenya is mainly by chain, bench and pit sawing systems, whose efficiency has not been well established. The sawing systems were evaluated for their performance using three species: ... -
A GA/IPSO based Approach for System Loss Reduction and Voltage Profile Improvement Employing Arithmetic Crossover and Mutation
(International Journal of Engineering Science and Technology, 2013)Reduction of system losses and improvement of voltage profile is one of the key aspects in power system operation. Though many methods are used to achieve this aspect, Distributed Generation (DG) has found increased usage ... -
Solving The Active Distribution Network Reconfiguration (ADNR) Problem Taking Into Consideration A Stochastic Wind Scenario and Load Uncertainty By Using HBFDE Method
(International Journal of Emerging Technology and Advanced Engineering, 2017)-Past literature has attempted to solve the problem of network reconfiguration with Distributed Generators (DGs) without taking into consideration the intermittent renewable at a close proximity. Distribution ... -
Power Loss Reduction in the Active Distribution Network by Doubly Fed Induction Generator (DFIG) Placement and Sizing Using Ordinary Particle Swarm Optimization (PSO) and an hybrid of Genetic Algorithm (GA) and PSO (HGAPSO)
(2013)Due to the increased importance of DFIGs in optimization of real and reactive power losses and the maintenance of voltage profile, the general methods of DG placement and sizing in the existing literature cannot be ... -
A combined sensitivity factor based GA-IPSO approach for system loss reduction and voltage profile enhancement
(International Journal of Innovative Research in Engineering & Science, 2013)Though several algorithms for optimizing DG location and size in a network with the aim of reducing system power losses and enhancing better voltage profile have already been proposed, they still suffer from several ... -
Combined Real and Reactive Power Economic Dispatch using Multi-Objective Reinforced Learning with Optimized Losses
(International Journal of Scientific and Research Publications, 2015)Most of the economic dispatch (ED) works so far deal with real power dispatch only. With the integration of renewable energy into the grid, reactive power dispatch cannot be ignored any longer due to its importance in ... -
A review of Techniques in Optimal Sizing of Hybrid Renewable Energy Systems
(International Journal of Research in Engineering and Technology, 2015)This paper presents a review of techniques usedin recent published works on optimal sizing of hybrid renewable energy sources. Hybridization of renewable energy sources is an emergent promising trend born out of the need ...
