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LEK 815:Ufundishaji wa kiswahili kama lugha ya pili
(KIBU, 2025-01-23) KIBU
LEK 815:Ufundishaji wa kiswahili kama lugha ya pili
BBL 312:Logistics ,costing and budgeting
(KIBU, 2025-01-21) KIBU
BBL 312:Logistics ,costing and budgeting
Approximate Critical Load of Cambered Double-Layered Grids by Shell Analogies
(Research Journal of Applied Sciences, Engineering and Technology, 2012-08-01) Ali, M. I.; Khakina, Peter Nyongesa; Fan, F.
Studies have shown that design of double-layered grids based on classical theories may lead to unsafe design. For square-on-diagonal grids, the load carrying capacity is almost the same as the buckling load. Therefore the buckling load can be used as the critical load in the design. In this study, the non-linear behavior of the grids is considered using shell analogies to determine the critical load. By applying the theorem of study and energy to a dimple, an empirical formula to predict the buckling load of thin spherical shells was derived. Then using finite element modeling, post-buckling load was identified and used to calculate the value of constant C. It is observed that the buckling load is proportional to t2.5, which gives a critical load close to what is observed in experiments and a more realistic load as compared to the Classical theory prediction. Load deflection curves drawn for the grids and their equivalent continuum shells correlate closely showing that the findings are valid.
Ways of Improving the Quality of Education in Primary Schools
(IRE Journals, 2024-03-28) Khakina, Peter Nyongesa; Munyekenye, Evelyne, N.; Maiyo, Julius K.
Quality education entails proper implementation of the curriculum's formal, non-formal, and informal dimensions. Quality education is reflected in performance in national examinations, where private schools tend to outperform public schools in Kenya. This study aimed to identify ways of improving the quality of education in primary schools by examining practices in private schools that contribute to their better performance. A sample of 13 head teachers, 56 teachers, and 405 students from 45 private schools in Bungoma County, Kenya, was used. Data were collected through questionnaires, interviews, and document analysis. The study concluded that ensuring sufficient teaching and learning resources, manageable class sizes, adequate staffing, teacher appraisal, and motivation are vital for improving the quality of education
Energy Efficiency Through Zero Energy House Construction Using Solar Technology in Bungoma County, Kenya
(IRE Journals, 2025-02-28) Khakina, Peter Nyongesa
A zero energy house is typically a house with net zero energy consumption on a yearly basis, which means that the annual energy consumption is equal to the amount of renewable energy produced on site. Bungoma County, Kenya has an average sunshine of about 9 hours in a day. The purpose of the study was to compare the consumption of power in a three bedroomed house within Bungoma County, Kenya when using grid power from Kenya Power and Lighting Company and solar energy in a zero-energy house. The power bills for 3 years were analyzed to determine the power consumption and the total cost. The consumption for the 3 years was 4,294 kWh at a total cost of Ksh. 106,090. For 20 years, the total cost of grid power will be Ksh. 707,267. The total cost of solar energy power in a similar three bedroomed zero energy house was calculated to be Ksh. 138,430 for a period of 20 years. Therefore, the cost of using solar energy was found to be about 20% of the grid power in Bungoma County, Kenya. The solar energy power is also environmentally friendly and ensures constant supply of power.