Research and Publications: Recent submissions
Now showing items 1081-1100 of 1138
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ESTIMATION OF EXTREME VALUE AT RISK IN RWANDA EXCHANGE RATE
(European Centre for Research Training and Development UK, 2014-12)Estimating the probability of rare and extreme events is a crucial issue in the risk estimation of exchange rate returns. Extreme Value Theory (EVT) is a well-developed theory in the field of probability that studies the ... -
Modeling export price of tea in Kenya: Comparison of artificial neural network and seasonal autoregressive integrated moving average
(Science Publishing Group, 2014-12-19)Agriculture sector is a key driver of economic growth in Kenya. It remains the main source of livelihood for the majority of the Kenyan people. Tea, coffee, and horticulture are the main agricultural exports in Kenya. ... -
Capture, isolation and electrochemical detection of industrially-relevant engineered aerosol nanoparticles using poly (amic) acid, phase-inverted, nano-membranes
(Elsevier, 2014-08-30)Workplace exposure to engineered nanoparticles (ENPs) is a potential health and environmental hazard. This paper reports a novel approach for tracking hazardous airborne ENPs by applying online poly (amic) acid membranes ... -
A numerical solution to estimate hydro-geologic parameters of a fractured geothermal porous medium based on fluorescein thermal decay correction
(Elsevier, 2014-07)A numerical solution to model the flow of fluorescein tracer in a fractured, high temperature geothermal system is presented. This study was carried out in Olkaria, Kenya. Results show that correcting for fluorescein ... -
Predictive complexation models of the impact of natural organic matter and cations on scaling in cooling water pipes: A case study of power generation plants in South Africa
(Elsevier, 2014)This work discusses simulative models of Ca and Mg complexation with natural organic matter (NOM), in order to control the incidence of scaling in pipes carrying cooling water at the Eskom power generating stations in ... -
Amplification of the discharge current density of lithium-ion batterieswith spinel phase Li(PtAu)0.02Mn1.98O4nano-materials
(Elsevier, 2014)In this study the synergistic and catalytic properties of a novel nano-composite cathode material ofnominal composition Li(M)xMn2-xO4(M = Pt-Au; x # 0.2) has been explored. Li(PtAu)xMn2-xO4nano-material for use in lithium-ion ... -
In - situ Electrochemical Synthesis, Microscopic and Spectroscopic Characterisations of Electroactive poly(2,5-dimethoxyaniline) – Multi-Walled Carbon Nanotubes Composite Films in Neutral Media
(International Journal of ELECTROCHEMICAL SCIENCE, 2014-09-29)Poly(2,5- dimethoxyaniline)-multi-wall carbon nanotubes (PDMA-MWCNT) nanocomposite films were synthesised by in –situ electrochemical polymerisation. The films were characterised by cyclic voltammetry (CV), ultra–visible ... -
Electrochromism in Self-Assembled Porous Thin Films of Hexagonal Tungsten Trioxide Microspheres Prepared by Aqueous Chemical Growth
(International Journal of ELECTROCHEMICAL SCIENCE, 2014-03)WO3 thin films were grown by self-assembly, at 80-90 ˚C, on un-seeded conductive SnO2:F-glass through the method of Aqueous Chemical Growth (ACG). The thin films produced contained urchin-like microspheres of WO3, 1-2 μm ... -
Application of extreme value theory in the estimation of value at risk in Kenyan stock market
(Int. J. Cur. Tr. Res, 2013)Most financial institutions have faced a lot of losses due to the fluctuations of commodities prices. Traditionally normal distribution was applied and could not capture rare events which caused enormous losses. The ... -
Bootstrap of Kernel Smoothing in Quantile Autoregression Process
(Journal of Statistical and Econometric Methods, 2013)The paper considers the problem of bootstrapping kernel estimator of conditional quantiles for time series, under independent and identically distributed errors, by mimicking the kernel smoothing in nonparametric autoregressive ... -
Electronics of Conjugated Polymers (I): Polyaniline
(International Journal of ELECTROCHEMICAL SCIENCE, 2012-12)Conducting polymers have elicited much interest among researchers because of their reasonably good conductivity, stability, ease of preparation, affordability and redox properties compared to other organic compounds. In ... -
An algorithm for simulation of a Chemical Transport Equation in an Aquifer
(2012)Dynamical systems can be predicted using mathematical models. These models are usually Partial Different Equations (PDEs). Examples include the wave equation, equations for diffusive processes, and the heat conduction equation. ... -
Modelling credit risk for personal loans: Cox Proportional Hazards Model Approach
(Pushpa Publishing House, 2012-08)A proportional hazards model approach was adopted to estimate risk of default for loan applicants. A sample of 500 applicants was observed for 36 months. The life of the account is measured from the month, it was opened ... -
Modelling Credit Risk for Personal Loans Using Product-Limit Estimator
(International Journal of Financial Research, 2012-01-05)A product- limit approach was adopted to estimate time to default for male and female loan applicants. For each group, a sample of 250 applicants was observed for a 30 months. The life of the account is measured from the ... -
Current and Emerging Technologies for the Characterization of Nanomaterials
(American Chemical Society, 2014-05-20)This paper provides a survey of conventional and emerging techniques that are available for characterizing engineered nanoparticles in complex matrices. Techniques that were considered include microscopy (TEM, SEM, HRTEM, ... -
Biofunctionalized poly (amic) acid membranes for absolute disinfection of drinking water
(Elsevier, 2014-12)The integration of biological building-blocks with synthetic nanomaterials may permit unprecedented ability to detect, disinfect and completely remove pathogens in water. We hereby described the synthesis of biodegradable, ... -
ASSESSING THE INFLUENCE OF HUMAN RESOURCE MANAGEMENT PRACTICES ON EMPLOYEE PERFORMANCE IN THE HEALTH SECTOR IN MACHAKOS COUNTY, KENYA
(International Journal of Economics, Commerce and Management, 2017-10)The study sought to determine the influence of Human resource management practices on employee performance in the health sector in Kenya; study of selected hospitals in Machakos Town .The specific objectives were; to ... -
AN EMPIRICAL STUDY OF CORPORATE GOVERNANCE AND LOAN PERFORMANCE OF COMMERCIAL BANKS IN KENYA
(International Journal of Economics, Commerce and Management, 2017-11)The purpose of this study was to establish the effect of corporate governance on Loan performance of commercial banks in Kenya. The study examined the corporate governance variables namely: Board Structure (BS), Audit ... -
Corporate Governance Practices And Firm Performance: A Review And Interrogation Of Theory
(International Journal of Innovative Research and Advanced Studies (IJIRAS), 2018-03)This paper reviews literature on corporate governance practices with a focus on banking institutions, and their impact on the performance of these institutions. As such it contributes to the debate on the importance of ... -
TRANSIENT PRESSURE WAVES IN HILLSLOPES
(2013-05)Previous studies found that during a rainfall event, pre-event water, which exists in the catchment before the event, may appear in significant amounts in the stream stormflow hydrograph. Pre-event water is predominantly ...
