University of Nairobi Institutional Repository: Recent submissions
Now showing items 39221-39240 of 116514
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Combined Real and Reactive Power Economic Dispatch using Multi-Objective Reinforced Learning with Optimized Losses
(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 ... -
Distributed transmit-power control in cognitive radio networks using a hybrid-adaptive game-theoretic technique
(2015)This paper studies game-theoretic distributed transmit-power control in a cognitive radio network. It presents a hybrid-adaptive algorithm that interfaces Iterative Water-Filling with two learning algorithms: the Hedging ... -
Relational patterns of urbanisation and economic growth in sub-Saharan Africa
(2016)Scholars of economic development have always hinted that the urbanisation process in the developing world does not follow the historical patterns discerned in the developed world where a strong relationship between a ... -
Common mental disorder in Nyanza province, Kenya in 2013 and its associated risk factors –an assessment of change since 2004, using a repeat household survey in a demographic surveillance site
(2015)Background Repeat household surveys are useful to assess change in prevalence over time, but there have been no repeat surveys of common mental disorder (CMD) in Kenya, or indeed sub-Saharan Africa. Therefore a repeat ... -
The effect of general elections on stock returns at the Nairobi securities exchange
(2015)The performance of the financial markets is significantly impacted by the political environment during eneral ellections. This paper focussed on the effect of general ellections on the stock retuns at the Nairobi ... -
Optimal error analysis of receive diversity schemes on arbitrarily correlated Rayleigh fading channels
(2016)A simple optimal error analysis of multiple-branch equal gain combining (EGC) and selection combining (SC) in the presence of arbitrarily correlated Rayleigh fading channels is presented. It is shown that the error rates ... -
The Effect of the Operational Parameters on the Draft Requirement of Ripping in a Sandy Clay Soil
(2016)This study set out to investigate the effect of operational parameters (i.e. ripping depth and operational speed) during a ripping operation on the draft requirement during ripping in a sandy-clay soil. Field experiments, ... -
Retrieval of aerosol optical depth over ecologically stressed East African land surfaces from top of atmosphere radiance utilizing the aerosol free vegetation index.
(2015)Traditional satellite based AOD retrieval techniques with a coarse resolution such as collection 5 hardly provides a high spatial detail suitable for accurate AOD retrieval particularly over the ecologically stressed sites ... -
On the existence of a non-relativistic hermitian time operator
(2016)The existence of a hermitian time operator is proposed in the framework of non-relativistic quantum mechanics.The Heisenberg equation of motion is shown to yield constant rate of flow of time.It is shown to yield results ... -
Comparing PSO and GA Optimizers in MLP to Predict Mobile Traffic Jam Times
(2015)Freely-usable frequency spectrum is dwindling quickly in the face of increasingly greater demand. As mobile traffic overwhelm the frequency allocated to it, some frequency bands such as for terrestrial TV are insufficiently ... -
Using a Mobile Based Web Service to Search for Missing People – A Case Study Of Kenya
(2015)Being out of touch with a loved one is concerning and not hearing from someone you care about is terrifying. Several cases of missing people have been reported for many years, where most of the searches turn out unsuccessful. ... -
The Critical Technological Factors OF E-Government in Kenya
(2015)EGovernment and innovation can provide significant opportunities to transform public administration into an instrument of sustainable development. However, the rate of failure of eGovernment projects in the developing ... -
Trust and Distrust: A Reputation Ratings Approach
(2016)Agents’ reputation ratings in a social network form a real valued matrix which is discounted with singular value decomposition (SVD) to estimate the trust and distrust levels of agents. SVD eliminates noise as future ... -
Evaluation of the Implementation of the e-Citizen in Kenya
(2016)Information Communication Technology (ICT) can make a valuable contribution towards the operations of and the services offered to citizens by a government. While the benefits of e-Government initiatives and projects in ... -
Cloud Computing Adoption in Insurance Companies in Kenya
(2016)Cloud Computing allows companies to access ICT-based services i.e. computer infrastructure, applications, platforms and business processes, via the internet. Cloud Computing is still at the infancy stage in Africa. Studies ... -
Predicting E-Procurement Utilization in Independent Commissions in Kenya
(2016)E-procurement has recently been introduced in the Kenyan public sector due to the many practical advantages it brings. Usage of the system is still at a very nascent stage. This paper sought to predict e-procurement ... -
Evaluation of Intelligent Grouping Based on Learners’ Collaboration Competence Level in Online Collaborative Learning Environment
(2016)In this paper we explore the impact of an intelligent grouping algorithm based on learners’ collaborative competency when compared with (a) instructor based Grade Point Average (GPA) method level and (b) random method, ... -
Optimized Routing and Component Placement to Improve the Continuity And Uniformity of the PCBPIFL Antenna’s Co-Planar Ground Plane to Achieve an Overall Improved Antenna Performance
(2015)A ground plane forms the other half for quarter wave PCB antennas. Integration of these type of antennas with other components within the same PCB of a mobile device compromise the uniformity and continuity of the ground ... -
A Hybrid Algorithm for Detecting Web Based Applications Vulnerabilities
(2016)Web vulnerability scanners (WVS) are tools for discovering vulnerabilities in a web application. However, they are not 100% accurate. In this paper we develop a hybrid algorithm for detecting web based applications ...
