Browsing School of Engineering and Technology by Title
Now showing items 85-104 of 115
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Polarization converter with controllable birefringence based on hybrid all-dielectric-graphene metasurface
(Springer US, 2018-12)Previous studies on hybrid dielectric-graphene metasurfaces have been used to implement induced transparency devices, while exhibiting high Q-factors based on trapped magnetic resonances. Typically, the transparency windows ... -
Polarization independent and tunable plasmon induced transparency for slow light
(Royal Society of Chemistry, 2017)A novel metamaterial composed of a Ag nanoprism periodic tetramer is proposed in this paper. The metamaterial has high structural symmetry and shows polarization independent plasmon-induced transparency (PIT), demonstrated ... -
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 ... -
Progression and Forecasting of Steel Demand in Kenya
(IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), 2018-08)Increase in usage of steel in Kenya has been witnessed due to the immense growth in the industrial sector and infrastructure. It is quite evident that as the country transforms herself into a middle income economy, it ... -
Properties of Prosopis juliflora and its potential uses in ASAL areas of Kenya
(2013)A study was done to determine the potential for processing and using prosopis juliflora for commercial purpose. The effects of the plant on the soil were evaluated as a measure of determining its influence on the environment. ... -
A Prototype for Authentication of Secondary School Certificates: A Case of Kenya Certificate of Secondary Education
(Globeedu Group, 2017-08)The demand for educated labor force has increased in developing countries like Kenya. Owing to this fact, more often Universities and training colleges in Kenya enroll students who want to further their education. Meeting ... -
A Prototype for Authentication of Secondary School Certificates: A Case of Kenya Certificate of Secondary Education
(International Journal of Innovative Research and Knowledge, 2017)The demand for educated labor force has increased in developing countries like Kenya. Owing to this fact, more often Universities and training colleges in Kenya enroll students who want to further ... -
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 ... -
Review of Software Engineering in the Context of Embedded and Cyber Physical Systems
(American Journal of Operations Management and Information Systems, 2017)Embedded systems have overwhelmingly penetrated systems globally in areas such as transportation, industrial-automation, medical-equipment, communication and energy as a result of Innovations being triggered by software ... -
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 ... -
Reward and Compensation as a Determinant of Employee Commitment: A Survey of Ktda Tea Factories in Kenya
(2014)The purpose of this study was to investigate the determinants of employee commitment in tea organizations in Kenya. Strong commitment is correlated with high productivity, while low commitment lowers productivity. ... -
Rheology of modified water based Isinya and Amboseli Clays: Effect of sodium carbonate and sodium carboxymethylcellulose.
(2018)Two Kenyan state owned entities are investing heavily in geothermal power exploration in Rift valley, to find enough steam for developing geothermal plants with capacities of up to 10,000 MW. This will require ... -
The Role of Broadband in Spurring Innovations in Kenya
(Researchgate, 2016-12)Objective: This study attempts to establish the role broadband plays in spurring innovations in Kenya. It discusses the importance of innovations in socio-economic development and the need for a regulatory framework to ... -
Satellite early identification through LED observations: First in-orbit results from WildTrackCube-SIMBA
(Science Direct, 2022-04)Autonomous illumination payloads on-board small satellites, i.e. LED (LightEmitting Diode) boards on CubeSats, can be tracked by ground-based telescopes for optical identification, orbit determination and attitude determination. ... -
Short Term Load Forecasting Using Artificial Neural Networks
(Proceedings of 2013 Mechanical Engineering Conference on Sustainable Research and Innovation, 2013)Load forecasting refers to the prediction of future load conditions based on present or historical data. This is important especially for transmission planning and economic dispatch. In this paper, an Artificial Neural ... -
Signal monitoring and performance stability evaluation tool in a high speed optical communication network
(2016-10)The diverse communication systems in South Africa have changed drastically over the last few years and are envisioned to continue to improve as evidenced by the deployment of high speed optical fibre networks, in both ... -
Simulation model for solar energy harnessing by the solar tunnel dryer
(2010)Models were developed to predict global solar radiation and the energy harnessed by a solar tunnel dryer, and simulated in Visual Basic 6. In addition, the simulated data were compared with actual data. Using a 10% absolute ... -
Societal Implications of IT in Religion for Developing Countries
(2017)Information Technology has penetrated nearly all aspects of our daily lives such that relationships associated with individuals and organizations are digitally enabled and mediated. Advances in IT have led to changes in ... -
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 ... -
SWAT model parameter calibration and uncertainty analysis using the HydroPSO R package in Nzoia Basin, Kenya
(Journal of Sustainable Research in Engineering, 2014)The parameter uncertainty in hydrological modelling has been accorded much attention in the recent past.Parameter uncertainty is a major source of overall model unreliability. In this study, the HydroPSO R package was used ...