University of Nairobi Institutional Repository: Recent submissions
Now showing items 58181-58200 of 116514
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3-Category Pedagogical Framework for Context based Ambient Learning
(31-05-13)Mobile phones have taken centre stage in transforming people's lives in all sectors of African economies. With regard to Education sector, studies show that, there is high prevalence of mobile phones among learners in ... -
Magnetic Decay in a Hollow Elliptic Cylinder. II
(University of Nairobi, 1966)Earlier results for the relaxation time of an axial magnetic field in a conducting hollow elliptic cylinder are extended to the case of eccentricities near unity. -
Erratum: Effect Of Reflecting Boundaries On The Transport Of Resonance Radiation. II. Comparison With Diffusion Theory
(University of Nairobi, 1970) -
On the Performance of Video Band Complex Correlators
(University of Nairobi, 1983-05-19)The performance data for various correlation schemes for Gaussian signals converted from the intermediate frequency band to the video band are derived and discussed. The folded-band conversion scheme is shown to have ... -
Correlations between yield and malting quality in barley
(University of Nairobi,, 1983)Grain yield, three yield components and grain nitrogen and moisture contents were investigated in a diallel cross, without reciprocals, involving four two-rowed and three six-rowed varieties. Grain yield/plant and ears/plant ... -
Correlation and multi-regression analyses in populations of two Kenyan landraces of spiderflower Gynandropsis gynandra.
(University of Nairobi,, 1992)Information on correlation and multiple-regression is derived from data on 7 characters in 2 Kenyan landraces (E and M) of G. gynandra [Cleome gynandra], grown at Thika during the short-rain season, 1988, and at Kabete ... -
Isozyme variation among Amaranthus cultivars.
(University of Nairobi,, 1996)Electrophoretic variation of esterase (Est), peroxidase (Per), phosphoglucoisomerase [glucose-6-phosphate isomerase] (Pgi) and phosphoglucomutase (Pgm) was studied in seven Amaranthus populations, namely, Jumla, F1 Jumla, ... -
The Challenges of Rural Electrification in Sub-Saharan Africa
(University of Nairobi, 09-06-05)This paper presents challenges of rural electrification. The main technical challenge of rural electrification programme to the power engineer is therefore the designing of an electrical distribution system for a dispersed ... -
Energy efficient house with integrated photovoltaics - a case study from South Africa
(2014-04-30)An energy efficient dwelling with building integrated photovoltaics has been built and monitored at the University of Fort Hare, Alice campus, South Africa, This was part of an initiative to implement energy efficiency ... -
Correlation Systems In Radio Astronomy And Related Fields
(University of Nairobi, 1984-02)A comprehensive review of the theory and practice of analogue and digital correlation systems used in radio astronomy and its related fields is given. The correlators are discussed according to the following classifications: ... -
PCR detection and distribution of Huanglongbing disease and psyllid vectors on citrus varieties with changes in elevation in Kenya.
(University of Nairobi,, 2009)The current decline in citrus production in Kenya is attributed to a great extent to Huanglongbing (HLB) (greening) disease, caused by Candidatus Liberibacter africanus. The control or eradication of the disease has been ... -
Long baseline determination using observations with macrometer II prototype receivers.
(University of Nairobi, 1987) -
Rectangular-Wave Modulation
(University of Nairobi, 1983-03)Rectangular-wave modulated pulse lengths are expressed as a function of the modulation index. The theoretical expressions are experimentally verified. An experimental measurement of signal-to-noise ratio for rectangular-wave ... -
Sexually Transmitted Diseases and Human Immunodeficiency Virus Control in Malawi: A Field Study of Genital Ulcer Disease
(University of Nairobi, 1995)Men with genital ulcer disease (GUD) attending a clinic in Malawi were evaluated and treated with one of five drug regimens. Haemophilus ducreyi was isolated from 204 (26.2%) of 778 patients. Of 677 men, 198 (29.2%) had ... -
Laser induced breakdown spectroscopy and characterization of environmental matrices utilizing multivariate chemometrics
(2013)We exploited multivariate chemometric methods to reduce the spectral complexity and to retrieve trace heavy metal analyte concentration signatures directly from the LlBS spectra as well as. to extract their latent char ... -
Error Patterns In Correlators With Four-Level Quantisation
(University of Nairobi, 1984-02)In the evaluation of the analogue correlation from the digital correlation of coarsely quantised Gaussian signals, it is necessary to know the threshold levels used in the quantisation. The formulas used in the evaluation ... -
Embracing Contingency Planning for University Information Resources
(University of Nairobi, 2013)Aims: This paper discusses the concept of contingency planning for information systems in a university context, uncovers the critical information systems within a university that are most vulnerable, identifies contingency ... -
A Wavelet Based Image Watermarking Scheme With A CDMA/Hadamard Embedding Technique
(University of Nairobi, 15-02-07)A new blind digital image watermarking scheme that employs a Hadamard matrix to spread the CDMA watermark in selected DWT coefficients in a gray-level cover image is proposed. The coefficients are obtained from the 1- level ... -
A Digital Image Watermarking Scheme Based On Localised Wavelet Coefficients' Dependency
(University of Nairobi, 25-09-09)A wavelet based robust image watermarking scheme in which a binary image is embedded in the horizontal and vertical quadrants of a wavelet transformed image is proposed. The algorithm exploits the inter-coefficients ...
