Browsing School of Engineering and Technology by Title
Now showing items 1-20 of 115
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A 1550 nm All-Optical VCSEL-to-VCSEL Wavelength Conversion of a 8.5 Gb/s Data Signal and Transmission over a 24.7 km Fibre
(International Society for Optics and Photonics, 2017)For the first time, we demonstrate, VCSEL-to-VCSEL wavelength conversion within the low attenuation 1550 nm transmission window, including transmission over fibre and bit error rate (BER) performance characterization. ... -
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 ... -
Ag nanoprism metamaterial based tunable plasmonic logic gate
(IOP Publishing, 2017)A metamaterial comprised of asymmetrically arranged Ag nanoprisms has been proposed and investigated in this paper. The metamaterial shows a polarization dependent PIT effect. The metamaterial with its periodic length ... -
An all Optical VCSEL Wavelength Conversion for Optical Fibre Access Networks
(Research Gate, 2016)A cheap, scalable and efficient optical wavelength conversion and optical path switching technique for access networks is experimentally demonstrated. Wavelength conversion is used in wavelength division multiplexed (WDM) ... -
All-Optical VCSEL-to-VCSEL Injection Based on Cross Gain Modulation for Routing in Multinode Flexible Spectrum Optimization in Optical Fibre Transmission Links
(Hindawi, 2019)In this paper, we experimentally present a novel, all-optical spectral efficient vertical-cavity surface-emitting laser- (VCSEL-) based technique for routing and spectrum assignment in optical networks. Exploiting all ... -
All-optical wavelength reuse with simultaneousupstream data and PPS timing signal transfer forflexible optical access networks
(Taylor and Francis, 2019)All-optical wavelength reuse is a viable approach for realization of low cost colourless ONUs. We experimentally demonstrate a novel all-optical wavelength reuse technique with simultaneous upstream data and pulse-per-second ... -
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 ... -
Analysis of Electromagnetic Transmission through Dielectric filled Apertures of Arbitrary Shape in a Thick Conducting Screen
(2005)The paper deals with an extension of the previous work appearing in a past issue of this transaction by the authors on hybrid FEM/MOM technique for analyzing transmission properties of arbitrarily shaped apertures on a ... -
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 ... -
An Appraisal on the Potential uses of Bentonite and its Availability and Exploitation in Kenya
(2022-06)— Bentonite is a smectite clay formed from the alteration of siliceous, glass-rich volcanic rocks such as tuffs and ash deposits. The major mineral in bentonite is montmorillonite, which is a hydrated sodium, calcium, ... -
Artificial breeding of an optimized solar tunnel dryer using genetic algorithms
(International Journal of Sustainable Energy, 2011)Studies were carried out to artificially breed an optimized solar tunnel dryer using genetic algorithms (GAs). The energy harnessed by the dryer was simulated in Visual Basic Script (Microsoft Visual Basic Script 2010TM) ... -
An Automatic Number Plate Recognition System for Car Park Management
(International Journal of Computer Applications Online, 2017-10)Automatic Number Plate Recognition (ANPR) is an internationally recognized methodology that is used in vehicle identification. ANPR systems allow for real time recognition of a vehicle’s number plate. Vehicle parking ... -
An Automatic Number Plate Recognition System for Car Park Management
(International Journal of Computer Applications, 2017)Automatic Number Plate Recognition (ANPR) is an internationally recognized methodology that is used in vehicle identification. ANPR systems allow for real time recognition of a vehicle’s number ... -
Broadband quarter-wave plate based on dielectricembedded plasmonic metasurface
(Royal Society of Chemistry, 2017)High transmission plasmonic and all-dielectric metasurface wave plates have been reported in recent studies. However, narrow bandwidth and low polarization conversion need to be addressed to attain even better operation ... -
A Case for the Revision of Power Engineering Syllabi at Kenyan Universities
(2005)This paper presents a summary of the current status of Elec-trical Power Engineering Education at Kenyan universities,followed by a summary of the situation on the same at universities world-wide. Against a backdrop of ... -
Collaborating USSD Platform in Web-Based Student Registration
(Academia, 2016-09)The number of students joining universities is increasing fast congesting existing registration systems. Online registration with student web portals common in many institutions of learning was adapted to solve ... -
The Combined Contribution of Bus Voltage and Frequency of a High Voltage AC in Load Shedding
(2015)Load shedding schemes proposed in literature so far use voltage and frequency parameters separately. The individual consideration of these indices may not be reliable or effective, and may even lead to the over load shedding ... -
Combined Economic and Emission Dispatch Solution Using ABC_PSO Hybrid Algorithm with Valve Point Loading Effect
(International Journal of Scientific and Research Publications, 2012)The problem of power system optimization has become a deciding factor in current power system engineering practice with emphasis on cost and emission reduction. The economic and emission dispatch problem has been addressed ... -
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 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 ...
