School of Biological, Physical, Mathematics & Actuarial Sciences: Recent submissions
Now showing items 21-40 of 253
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Using Self-Regulated Learning to Enhance Mathematics Achievement among Grade 11 Learners in Kenya
(Inderscience Enterprises Ltd., 2022-12-01)The study investigated the effect of self-regulated learning (SRL) on mathematics performance among learners in Kenya. The study employed Solomon four research design. A sample size of 408 grade 11 learners from four schools ... -
Granular and Powdered Lime Improves Soil Properties and Maize (Zea mays L.) Performance in Humic Nitisols of Central Highlands in Kenya
(SSRN, 2022-12-19)Soil acidity is a major constraint to crop production on highly weathered tropical soils characterized by high Aluminum (Al) toxicity, low cation exchange capacity, and low phosphorus (P) availability to plants. The objective ... -
Assessment of the Current Trophic State and Water Quality of Lake Naivasha, Kenya Using Multivariate Techniques
(John Wiley & Sons, Ltd, 2022-12-01)Lake Naivasha is a tropical freshwater body in Kenya, providing a source of livelihoods to the surrounding communities. The lake ecosystem, however, has become degraded over time because of increasing pollutant loads ... -
Biogenic Synthesis of Gold Nanoparticles from Physalis peruviana and Application in Wound Healing
(2022-09-12)Wound management is key to healing. Poorly managed wounds lead to abnormal biological reactions and complications. Microorganisms, bacteria or fungi, infect such wounds leading to their chronic nature. Gold nanoparticles ... -
SARS-CoV-2 Detection in Fecal Samples in Sym-asymptotic Patients with Typical Findings of COVID-19 on Ag-RDT and SARS-CoV-2 RT-PCR Tests
(Preprints, 2022-09-28)Coronavirus is a disease caused by a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) which emerged as a global pandemic in 2019 from Wuhan, China. Since its emergence, it has caused immense suffering to human ... -
Jump Diffusion Logistic Brownian Motion with Dividend Yielding Asset
(International Journal of Mathematics And its Applications, 2021)Jump diffusion processes have been used in modern finance to capture discontinuous behavior in asset pricing. Logistic Brownian motion for asset security prices shows that naturally asset security prices would not usually ... -
Completely Positive Map from M4(C) to M5(C) on Positive Semidefinite Matrices
(Journal of Mathematical Analysis and Modeling, 3/29/2022)Positive Maps Are Essential In the Description of Quantum Systems. However, Characterization Of The Structure Of The Set Of All Positive Maps Is A Challenge In Mathematics And Mathematical Physics. We Construct A Linear ... -
On Equality of Complete Positivity and Complete Copositivity of Positive Map
(Journal of Linear and Topological Algebra, 5/30/2022)In this paper we construct a 2-positive map from M4(C) to M5(C) and state the conditions under which the map is positive and completely positive (copositivity of positive). The construction allows us to create a decomposable ... -
Implementation of Technology and Innovation Support Centers (Tiscs) in Kenya: Challenges and Opportunities
(Elsevier, 2022-02)Technology and Innovation Support Centers (TISCs) were established by the World Intellectual Property Organization (WIPO) in 2009 to support innovations in least developed countries. They facilitate innovators to access ... -
Characterization of Topological Fuzzy Sets in Hausdorff Spaces
(TFFS Journals, 2022)In this paper, we have characterized big data fuzzy sets and shown that topological data points form singleton fuzzy sets which are closed. Besides, fuzzy sets of topological data points are compact and have at least one ... -
Aspects of The Biology and Population Structure of Oreochromis Niloticus, Coptodon Zillii and Oreochromis Leucostictus Tilapia in Lake Naivasha, Kenya
(2022-03-03)The Nile tilapia (Oreochromis niloticus), Redbelly tilapia (Coptodon zillii) and Blue spotted tilapia (Oreochromis leucostictus) were introduced into Lake Naivasha in the 1950s to diversify and boost the lake fisheries. ... -
Assessment of Land Use and Land Cover Changes in Kenya’s Mt. Elgon Forest Ecosystem
(African Journal of Ecology, 2021-05-08)Current land-use trends in Kenya's montane forest ecosystems show that land uses are changing fast due to natural and anthropogenic factors and these changes could have devastating effects on the environment. One such ... -
Derivation of Black Scholes Equation Using Heston’s Model with Dividend Yielding Asset
(International Journal of Statistics and Applied Mathematics, 12/5/2021)Black Scholes formula is crucial in modern applied finance. Since the introduction of Black – Scholes concept model that assumes volatility is constant; several studies have proposed models that address the shortcomings ... -
Evaluation of CO2 in Saline Aquifers under Deep Ground Water Systems in Urumqi River Basin of Xinjiang, China
(Ecological Engineering & Environmental Technology, 2021-09-17)The future emissions of carbon dioxide (CO2) are likely to increase beyond the current levels due to rapid industrialization in China. Several methods have been proposed as possible mitigation strategies to reduce the ... -
Formulating Black Scholes Equation Using a Jump Diffusion Heston’s Model
(International Journal of Statistics and Applied Mathematics, 12/7/2021)In modern financial mathematics, accurate values are obtained by taking into account a considerable number of more realistic assumptions in logistic Black Scholes equation. The aspects considered here are cost of transactions ... -
A Combination of Dividend and Jump Diffusion Process on Heston Model in Deriving Black Scholes Equation
(International Journal of Statistics and Applied Mathematics, 12/10/2021)The reality that exists in a stock market situation is that assets do pay dividend to owners of assets or derivative securities. Dupire, Derman and Kani built an option pricing process with a dividend yielding diffusion ... -
Occurrence of Fungal Foliar Diseases of Tomato in Different Agro-Ecological Zones of Kirinyaga County, Kenya
(Fundamental and Applied Agriculture, 2022-03-30)Tomato production is characterized by inconsistent quality and yields due to biotic constraints such as fungal foliar diseases. Information on the occurrence of the diseases in different agro-ecological zones of Kenya is ... -
Biogenically Synthesized Silver/Gold Nanoparticles, Mechanism and their Applications: A Review
(Asian Journal of Chemical Sciences, 2022-02-28)As a result of climate change and rapid urbanization, attention increasingly turns to the management of water resources. Proper management of water resources has become a core concern for development practitioners and ... -
Factors that Influence Adoption of New Improved Wheat Varieties by Farmers in Nakuru and Narok, Kenya
(European Journal of Agriculture & Food Science, 2022-04-14)This study examines the factors that influence the adoption of new improved wheat varieties (NIWV) by wheat farmers in Nakuru and Narok counties in Kenya. Cross-sectional data from 344 randomly selected wheat farmers from ... -
Persistent Low Level Viraemia in Antiretroviral Treated Patients: Associated Factors and Virologic Outcome among HIV-1 Infected Patients at Nyakach County Hospital
(Global Scientific Journals, 2022-02)Antiretroviral treatment (ART) assists patients in controlling their HIV infection and ensuring long-term survival. Despite this advantage, a significant number of HIV-positive individuals do not attain full virologic ...
