Research and Publications: Recent submissions
Now showing items 421-440 of 1137
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A critical review of the effect of water storage reservoirs on organic matter decomposition in rivers
(NRC Research Press, 2016)Organic matter decomposition is vital in sustaining river food webs. However, little is known about the effect of water storage reservoirs on organic matter decomposition in rivers. In this paper, we reviewed and analyzed ... -
Methane-Derived Carbon in the Benthic Food Web in Stream Impoundments
(Public Library of Science, 2014)Methane gas (CH4) has been identified as an important alternative source of carbon and energy in some freshwater food webs. CH4 is oxidized by methane oxidizing bacteria (MOB), and subsequently utilized by chironomid ... -
Monitoring water and habitat quality in six rivers draining the Mt. Kenya and Aberdare Catchments using Macroinvertebrates and Qualitative Habitat Scoring
(2014)The study was conducted in June and September 2011 in six rivers that drain Mt. Kenya and the Aberdare catchments, i.e. Honi, Naro Moru, Liki, Sirimon, Mariara and Karigu. The main objective was to determine the ecological ... -
Effect of Small Impoundments on Leaf Litter Decomposition in Streams
(John Wiley & Sons, Ltd, 2015)Leaf litter decomposition is an important process providing energy to freshwater biota. Flow regulation and dams can strongly alter freshwater ecosystems, but little is known about the effect of small impoundments on leaf ... -
Landslide scar/soil erodibility mapping using Landsat TM/ETMþ bands 7 and 3 Normalised Difference Index: A case study of central region of Kenya
(Pergamon, 2015)Landsat series multispectral remote sensing imagery has gained increasing attention in providing solutions to environmental problems such as land degradation which exacerbate soil erosion and landslide disasters in the ... -
The relationship between Dividend Payout ratio and Capital Structure of companies quoted at the Nairobi Securities Exchange, Kenya in the industrial and allied sector
(International Journal of Economics, 2015)The existing literature on optimal dividend policy and capital structure is voluminous and has continuously evolved over the last five decades. The objective of this study was to establish the relationship between the ... -
Strategic planning and implementation practices at the Kisii county government in Kenya
(2013)The aim of this study was to ascertain strategic planning and implementation practices at the Kisii county government in Kenya. The researcher collected qualitative data from the County secretary, Deputy Speaker, County ... -
Estimation of Risk in Rwanda Exchange Rate
(2014)Generalized Autoregressive Conditional Heteroskedasticity (GARCH) approach was applied to Rwanda Exchange rate returns to estimating current volatility. We fitted autoregressive (AR) model with GARCH errors to the daily ... -
Estimation of Critical Streamflow Discharge Level Using Nonparametric Quantile Regression Model
(2016)Various parametric models have been designed to analyze volatility in river flow time series data. For maximum likelihood estimation these parametric methods assumes a known conditional distribution. This paper considers ... -
Limit Theory of Model Order Change-Point Estimator for GARCH Mode
(Scientific Research Publishing, 2018)The limit theory of a change-point process which is based on the Manhattan distance of the sample autocorrelation function with applications to GARCH processes is examined. The general theory of the sample autocovariance ... -
Application of Nonparametric Methods in Studying Energy Consumption
(University of Rwanda, 2011)Consumer behaviour towards different forms of energy varies over time. The variance can be so large that the quality of the estimation functional relationship between the response variable and its associated explanatory ... -
Conflict resolution using statistical approach
(Academic Journals, 2010)Conflict can be described as a condition in which actions of one person prevent or compel some outcome at the resistance of the other. Quite often this can be seen as “two or more competing, often incompatible, responses ... -
Challenges Affecting Implementation of Strategic Plan in Kenya Health Sector; A Case of Public Hospitals in Machakaos County
(Noble Academic Publisher, 2017)Strategic planning and its implementation in Kenya at the Ministry of Health is an element of the on-going public sector reforms designed to improve the delivery of health care services. However, this implementation has ... -
Influence of employee resourcing on organizational performance of devolved governments in South Eastern Kenya region
(2019)The study focused on the influence of human capital factors on performance of devolved Governments in South Eastern Kenya region. The specific objective of the study being to establish the influence of employee resourcing ... -
Assessment of corporate management practices in public universities in Kenya
(Academic Journals, 2013)In order to continue attracting and retaining high-class intellectual power and hence guarantee quality service delivery, public university management will need to change and adjust in line with increasing local ... -
General Circulation Models (GCMs) Downscaling Techniques and Uncertainty Modeling for Climate Change Impact Assessment
(Proceedings of 2013 Mechanical Engineering Conference on Sustainable Research and Innovation, 2013)Scientific literature on the assessment and projection of climate change impacts suggests that the rapidly changing climate conditions are causing far-reaching consequences on natural resources and agricultural production. ... -
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 ... -
Spatio-temporal vegetation dynamics and relationshipwithclimate over East Africa
(Hydrol. Earth Syst. Sci. Discuss, 2016)Vegetation plays a key role in the global climate system via modification of the water and energy balance. Its coupling to climate is therefore important particularly in the tropics, where severe climate change impacts ... -
Estimation of T- period’s ahead extreme quantile autoregression function
(African Journal of Mathematics and Computer Science Research, 2010)This paper considers the estimation of extreme quantile autoregression function by using a parametric model. We combine direct estimation of quantiles in the middle region with that of extreme parts using the model and ... -
A Three-Step Nonparametric Estimation of Conditional Value-At-Risk Admitting a Location-Scale Model
(Journal of Statistical and Econometric Methods, 2019)Financial institutions owners and regulators are concerned majorly about risk analysis, Value-at-Risk (VaR) is one of the most popular and common measures of risk used in finance, measures the down-side risk and is ...
