http://ir.mksu.ac.ke/handle/123456780/11 Sun, 17 May 2026 14:14:01 GMT 2026-05-17T14:14:01Z http://ir.mksu.ac.ke/handle/123456780/21183 QUESTION TYPOLOGY IN KENYAN TV ARGUMENTATIVE TALK SHOWS Mwai, Loice; Maroko, Geoffrey; Orwenjo, Daniel; Ogutu, Emily The argumentative talk on radio and TV has become a popular feature of media discourse in Kenya. Question-answer sequences as the talk unfolds through the joint participation of co-participants in the talk have emerged as a means to put argumentative talk into effect. Yet, the nature of questions and their categorization remain little understood. Given the recursive nature of question-answer sequences, this paper investigates question typology that sets apart argumentative talk shows from other types of talk. The data consists of transcripts from two Kenyan TV argumentative talk shows: Checkpoint on KTN and Opinion Court on Citizen TV. A question classification scheme by Schirm [2008] was used to discuss the incidence and usage of questions in argumentative talk shows. Findings revealed that clashing, rhetorical, classic clarifying, and opinion-eliciting questions were the most frequently used types in the data sets. It was also noted that different question types served unique rhetorical purposes leading to the conclusion that argumentative talk shows on TV exhibit recursive interactional resources qualifying it as a genre. Mon, 01 Jan 2024 00:00:00 GMT http://ir.mksu.ac.ke/handle/123456780/21183 2024-01-01T00:00:00Z http://ir.mksu.ac.ke/handle/123456780/21182 Economic Load Dispatch on a 132 kV Line with Service Potential Transformer Substations: A Case Study of Juja-Rabai Line Kitheka, Joel; Moses, Peter; Nyete, Abraham; Abungu, Nicodemus Power outages have created significant challenges for power system networks, particularly in developing countries where the electricity demand continues to rise without a corresponding increase in power generation or the expansion of transmission and distribution networks. In Kenya, while there is a well-established transmission line network, the distribution infrastructure remains inadequate for supplying electricity to end consumers. This paper examines the economic load dispatch (ELD) of power system networks utilizing Service Potential Transformer (SPT) substations to provide electricity to villages located near high voltage (HV) lines. The ELD analysis was conducted to identify the optimal economic power output from the Kipevu, Rabai, and Thika thermal power plants, addressing the demand for both conventional and non-conventional substations. A gradient method was employed to calculate the ELD for these three generating units, and the results were validated using the PowerWorld simulator. Findings indicated that the three generators supplied 20 MW, 37.5 MW, and 12.5 MW, respectively. The results obtained from the gradient method are consistent with those obtained from PowerWorld software. Additionally, this study projected an annual fuel cost savings of USD 17,695.20 when ELD was implemented, compared to a scenario of equal load distribution among generating units. Over a ten-year period, these savings would be sufficient to establish a conventional distribution substation to meet the power demands of villages located further away from high voltage lines. Sun, 01 Sep 2024 00:00:00 GMT http://ir.mksu.ac.ke/handle/123456780/21182 2024-09-01T00:00:00Z http://ir.mksu.ac.ke/handle/123456780/21181 Modeling Zika Virus Disease Dynamics with Control Strategies Helikumi, Mlyashimbi; Lolika, Paride; Makau, Kimulu; Ndambuki, Muli; Mhlanga, Adquate In this research, we formulated a fractional-order model for the transmission dynamics of Zika virus, incorporating three control strategies: health education campaigns, the use of insecticides, and preventive measures. We conducted a theoretical analysis of the model, obtaining the disease-free equilibrium and the basic reproduction number, and analyzing the existence and uniqueness of the model. Additionally, we performed model parameter estimation using real data on Zika virus cases reported in Colombia. We found that the fractional-order model provided a better fit to the real data compared to the classical integer-order model. A sensitivity analysis of the basic reproduction number was conducted using computed partial rank correlation coefficients to assess the impact of each parameter on Zika virus transmission. Furthermore, we performed numerical simulations to determine the effect of memory on the spread of Zika virus. The simulation results showed that the order of derivatives significantly impacts the dynamics of the disease. We also assessed the effect of the control strategies through simulations, concluding that the proposed interventions have the potential to significantly reduce the spread of Zika virus in the population. Fri, 01 Nov 2024 00:00:00 GMT http://ir.mksu.ac.ke/handle/123456780/21181 2024-11-01T00:00:00Z http://ir.mksu.ac.ke/handle/123456780/21180 QUANTITATIVE TRAIT LOCI FOR YIELD AND YIELD-ASSOCIATED TRAITS IN CHICKPEA UNDER DROUGHT STRESS KOSGEI, A. J. Crop yield is a complex phenomenon, controlled by several genes, each contributing to the overall phenotypic expression; which is affected by environment and genotype x environment interactions. Identifying and mapping quantitative trait loci (QTLs), make tracing these traits during breeding possible and easy. The objective of this study was to identify QTLs associated with chickpea (Cicer arietinum L.) grain yield and its associated traits, under drought stress. The experiment was conducted using 188 F3:5 genotypes from ICCV 05107 x ICCV 94954 crosses. Genotypic data were from 49 polymorphic simple sequence repeat (SSR) markers; while phenotypic data were obtained from a field evaluation designed in a 19 x 10 alpha lattice. The study was replicated thrice on three sites, namely at Koibatek Agricultural Training Centre, Muserech; and at the Kenya Agricultural Research and Livestock Organisation, Marigat. Eight QTLs were mapped on a linkage map spanning a total length of 335.04 cM, with varying phenotypic variation expression (PVE%). These QTLs include, one each for days to maturity, 100-seed weight, and two each for above-ground biomass, harvest index, and grain yield. Five major QTLs having PVE ranging from 10.37 to 32.39%, were identified for days to maturity, 100-seed weight above-ground biomass, harvest index (HI), and grain yield. Four of the eight QTLs were mapped on linkage group 4 (LG4); days to maturity, 2 for above-ground biomass, and grain yield. The QTLs mapped are useful in genomic-assisted breeding for chickpea yield improvement. However, there is a need for marker saturation on LGs and specific genes identified for effective marker-assisted breeding. Mon, 01 Jan 2024 00:00:00 GMT http://ir.mksu.ac.ke/handle/123456780/21180 2024-01-01T00:00:00Z