Author: Stephene Ouma; Emma Chebet; Ken Kirwa; Roggers Mwaki
Kenya has a fully market-determined exchange rate system where there are no controls on foreign exchange. The country is involved in international trade. Fluctuation in the exchange rate of the Kenyan shilling has therefore always had its effects on the country’s economy. This article examines the exchange rate trend of the Kenyan shilling against the US dollar from the year 2005 to 2019. It also covers the factors affecting the foreign exchange rate and how they have contributed to the general trend in the Kenyan forex market. The data obtained was from the Central Bank of Kenya Forex statistics.
Author: Leparakuo Robert Patita; Omondi Felix Onduru; Abdulkhaliq Ismail Adhan; Korir Laban Kiprono; Githaiga Timothy Njoroge; Muthui Kevin Muli
Share price prediction is an important aspect of the financial market. The aim of this research is to use an ARIMA predictive model in R programming for predicting a future share price. The research entails developing a time series model using the Box and Jenkins modeling approach. An ARIMA model (2, 1, 1) with drift was developed to forecasts K.P.L.C prices. In addition, the ARIMA model was found to be best suited for short term forecasts.
Author: Kamotho Nigel Thuku; Kola Beryl Toria; Wayne Makwata; Nicodemus Nthenge Nzisa; Mwaura Magdaline
Shares or stocks are forms of financial securities that are vital in funding corporate operations and expenses. This project aims at analyzing NSE 20 share index from the year 2001 to 2018 in order to create a price prediction and forecasting model. Methods involved include time series univariate models such as Auto-correlation, regression, Dickey –Fuller test, ARIMA and test on residuals. Results and conclusion proves this model to have 72% efficiency in the prediction of future share index prices hence giving a vote of confidence that it can be used by investors to trade their shares.
Author: Osowo Odhiambo Fredrick
West Nile Virus (WNV) is an arbovirus that is transmitted by Culex mosquitoes. Birds are its amplifying hosts while horses, humans and other animals are dead-end hosts. WNV mainly causes fatalities in birds and horses while in humans, it mostly causes subclinical infection. However, fatal meningo-encephalitis is experienced in about 2 to 17% of those infected. Several outbreaks of WNV have been recorded in some countries like Greece, Israel, Romania, Russia and USA. There is a WNV vaccine for horses but not for humans. The aim of this study was to develop a parsimonious epidemiological model to study how irrigation affects the transmission dynamics of West Nile virus in Tana River County in Kenya. The study also evaluated the impact of use of mosquito adulticides repellents and larvicides as WNV control interventions. We formulated a SEIR (Susceptible, Exposed, Infectious, and Recovered) model with compartments for mosquitoes, birds and humans. Parameters were originated from published literature while the meteorological data for the study site was obtained from the meteorological department. Ordinary differential equations (ODEs) generated from the model were used in R programming language to simulate the risk of WNV under various study scenarios. The simulation was driven by mosquito suitability index which is a function of irrigation and rainfall patterns. The model outcome indicated that the irrigation increased both the amount of water and suitability of the habitat for mosquito breeding about five-fold. This resulted in about three-fold increase in vector density and risk of WNV. Irrigation therefore increased the risk of WNV transmission in Tana River by about 200%. The comparative efficacy analysis of the vector control interventions showed that use of mosquito adulticides was the most effective method followed by repellents and lastly larvicides. The model also showed that WNV epidemics may be seasonal in nature for rainfall situations where they are likely to occur about one month after peak rainfall. However, for irrigated situations, the risk of WNV is likely to be a perennial phenomenon. This model may be used as a framework to guide decision making on the timing and choice of WNV control intervention. However, the model needs to be developed further by incorporating more factors to improve on its accuracy.
Author: Keith Bunyoli
Author: George Mbogo Wamuyu
Author: Kimani Kevin Macharia
Author: Flora Mwikali Katiwa
Author: Sakong Brenda Jepchirchir
European languages are members of the same family. The languages only differ in their grammar, their pronu nciation and their most common words. pronunciation and more common words. If several languages coalesce, the grammar of the resulting. Languages realizes why a new common language would be desirable: one could refuse to pay expensive translators. To achieve this, it would be necessary to have uniform grammar articles, pronunciation and more common words the grammar of the resulting..
Leverage agile frameworks to provide a robust synopsis for high level overviews. Iterative approaches to corporate strategy foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view of disruptive innovation via workplace diversity and empowerment. If several languages coalesce, the grammar of the resulting realizes .