Browsing School of Pure and Applied Sciences by Title
Now showing items 84-103 of 170
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Narrow Visible Emission And Narrowing Band Gap In Ho3+ -Co Doped Y2O3: Eu3+ Nanopowders Prepared Via Sol- Combustion Route.
(IOSR Journal of Applied Physics, 2017-12)Nanocrystalline Eu3+, Ho3+co-doped Y2O3 powders with a maximum size of 9.8 nm were prepared by the sol-combustion process, using Y (NO3).6HO2 as an oxidizer, europium and holonium nitrates as activators, thiourea as a fuel ... -
New Records of Lichen-forming Fungi from Kenya
(Journal of East African Natural History, 2012) -
A new species of Melanochaeta from Kenya
(Verlag Ferdinand Berger & Söhne Ges.m.b.H., 2008)Melanochaeta taitensis is described as a new species from Kenya. It is distinguished from the other known species of Melanochaeta by having large, 3-septate, strongly curved ascospores. Phylogenetic analyses of nuclear 28S ... -
Non-Parametric Estimator for a Finite Population total under Stratified Sampling incorporating a Hybrid of Data Reflection and Transformation Techniques
(Meru University of Science and Technology, 2023)Statisticians use survey sampling methods in the estimation of population parameters of interest. This field has received increased demand due to the reliable statistic they produce. Information is extracted from the samples ... -
Non-response weighting adjustment approach in survey sampling
(JKUAT Press Ltd, 2006)Non-response problem is an issue of great concern to all the researchers because it pervades almost all survey research. This ultimately creates potential for bias. The higher the non-response rate the greater the bias if ... -
Nonparametric estimation of distribution function for stratified populations
(International Journal of Probability and Statistics, 2018)Nonparametric estimation of population parameters for finite populations has been used with great success for data that fit the independent and identically distributed framework. However, most of these approaches do not ... -
Nonparametric mixed ratio estimator for a finite population total in stratified sampling
(Pakistan Journal of Statistics and Operation Research, 2010)We propose a nonparametric regression approach to the estimation of a finite population total in model based frameworks in the case of stratified sampling. Similar work has been done, by Nadaraya and Watson (1964), Hansen ... -
Nonparametric model assisted model calibrated estimation in two stage survey sampling
(JKUAT Press Ltd, 2007) -
A numerical investigation of the effect of curvature and Reynolds number to radial velocity in a curved porous pipe
(International Journal of Advances in Applied Mathematics and Mechanics, 2017)Different irrigation methods are being used in agriculture. However, due to scarcity of water, irrigation methods that use water efficiently are needed. The motivation of this study is the increasing use of porous pipes ... -
On Estimation of Panel Data Regression Model in the Presence of Endogeneity and Heterogeneity
(International Journal of Mathematics & Computation, 2015) -
On quantiles estimation based on stratified sampling using multiplicative bias correction approach.
(Journal of Mathematics, 2022)In the context of stratified sampling, we develop a nonparametric regression technique to estimating finite population quantiles in model-based frameworks using a multiplicative bias correction strategy. Furthermore, the ... -
On The Existence of a Non-Relativistic Hermitian Time Operator
(2015)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 ... -
Optical properties of ZnO nanoparticles synthesized by varying the sodium hydroxide to zinc acetate molar ratios using a Sol-Gel process.
(Springer, 2016)Material property dependence on the OH−/Zn2+ molar ratio of the precursor was investigated by varying the amount of NaOH during synthesis of ZnO. It was necessary to control the water content and temperature of the mixture ... -
Outlier Robustness of the Estimators of Variance of the Ratio Estimator
(Jomo Kenyatta University of Agriculture and Technology (JKUAT), 2002) -
Parallel evolution of hysterothecial ascomata in ascolocularous fungi (Ascomycota, Fungi).
(The Natural History Museum, 2009-12-01)Ascoma morphologies have traditionally been used to classify filamentous ascomycete fungi. Phylogenies generated using DNA sequence data have since shown most of the previously identified groups not to be monophyletic. The ... -
Parameter Estimation of Power Lomax Distribution Based on Type-II Progressively Hybrid Censoring Scheme
(HIKARI Ltd, 2018)In this study, we consider the parameter estimation of a three-parameter continuous distribution, namely, power Lomax distribution proposed by [7], when the lifetime experiments are under Type-II Progressively Hybrid ... -
Parametric Modeling of Probability of Bank Loan Default in Kenya
(JAGST, 2012)Commercial banks in Kenya are the key players not only in the financial market but also in spurring the economic growth that has been witnessed in the country in the recent past. Besides Safaricom and East Africa Breweries, ... -
Performance of Ground Clay Brick Mortars in Simulated Chloride and Sulphate Media
(Hindawi, 2019)The durability of cement-based structures majorly depends on their resistivity to the aggressive media in the construction environment. The most aggressive ions commonly encountered in construction environment are chloride ... -
Photo-Thermal Induced Optical Scattering Modulation Sensor for Malaria Diagnosis
(Scientific Research Publishing, 2018-09)Malaria is one of the leading killer diseases in sub-Saharan Africa. Although the disease is curable, early and accurate diagnosis is key to effective therapy. Existing malaria diagnostic techniques have low detection ...