Abstract: In this article, a group acceptance sampling plan (GASP) for lot resubmitting is developed to ensure quality of the product lifetime assuming that the product’s lifetime follows the half logistic distribution. The parameters of the GASP are determined by satifying the specified producer’s and consumer’s risks according to the experiment termination time and the number of testers. A comparison between this proposed group sampling and the ordinary group sampling plan is discusse...
ABSTRACT The study of predator prey model with immigrant prey with and without harvesting has received great attention from both theoretical and mathematical biologists and has been studied intensively and extensively. Different literatures on interaction between species have been surveyed. In this document we establish sufficient stability criteria, criteria for the existence of periodic solution and Hopf bifurcations of a predator prey systems with immigrant prey without and with harvesting...
ABSTRACT Cyber threats are becoming more sophisticated with the blending of one distinct type of attack on more damaging forms. Increased variety and volume of attacks are inevitable given the desire of financially and criminally-motivated actors to obtain personal and confidential information. Following this alarming situation, this dissertation informs about a framework for cyber security risks for mobile money which was designed through the study that was conducted in Dodoma City to propos...
Abstract This paper concentrates on the mathematical model for optimal control and cost-effectiveness analysis of tomato yellow leaf curl virus disease. The boundedness of the model has been analytically examined. The preferable optimal level of the intervention strategy to reduce the spreads and the cost of implementing control strategies were determined by introducing the time-dependent control. Pontryagin’s maximum principle was used to determine necessary conditions for the optimal cont...
ABSTRACT Forecasting of stock market trends has been an area of great interest to researchers who are attempting to uncover the information hidden in the stock market data and to traders who wish to profit by trading stocks. An accurate forecasting of stock market trends may yield profits for investors. Forecasting of stock price trend is regarded as a challenging task. Due to the complexity of stock market data, development of efficient models for forecasting stock market trends is highly ch...
ABSTRACT Antimicrobial resistance could cause approximately 10 million of people‟s deaths worldwide yearly by 2050 (Sutherland, 2017). Thus, this study was aimed to evaluate the antimicrobial activity of Cleome gynandra and Zanthoxylum chalybeum. The extracts of roots and flowers of Cleome gynandra; root barks, stem barks and leaves of Zanthoxylum chalybeum were used for investigation. The powdered plant materials were macerated in petroleum ether, ethyl acetate, nbutanol and aqueous methan...
ABSTRACT This dissertation reports on a comparison of the physico-chemical parameters between hot springs and borehole waters. Thirty four samples were collected at Mara, Shinyanga, Singida, Manyara and Dodoma in Tanzania. Multimeter used for the analysis of physical parameters pH, EC, TDS, salinity and turbidity. Titrimetricmethods were used for chemical parametersCl−, total hardness, Ca2+ and Mg2+. UV-Visspectrophotometricfor NO3 − , SO42− , F− , Fe2+and Mn2+ and Flame Atomic Absorp...
ABSTRACT In this study students’ admission forms and the Internet were used to create datasets in order to design, implement and test a prototype for an inferential engine for degree programme recommendation. The said engine is a Machine Leaning (ML) tool to be used by students for selection of degree programmes. The dataset had 17 features which represented ordinary and advanced level performances, category of schools of admission and student gender. Data in the dataset was unevenly distri...
ABSTRACT Aims: Trypanosomosis is among one of the tropical neglected diseases which have impacted on human, livestock and wildlife. Different factors have been discussed by various researchers but ecological factors being considered in nutshell. This paper aimed at reviewing details on how the ecological factors influence the prevalence of trypanosome. Study Design: Literature review where various literatures have been reviewed and the information synthesized. This paper has placed focus on: ...
ABSTRACT The occurrence of overweight and obesity has serious health implications. The 2010 Tanzania Demographic and Health Survey data set was reanalysed to compare the prevalences of overweight and obesity between Mainland Tanzania and Zanzibar and to determine how demographic factors can predict overweight and obesity across the United Republic of Tanzania. About 7.92% of the Tanzanian women of reproductive age were obese, 15% were overweight, and 11.5% were underweight.Women fromMainland ...
ABSTRACT This study aimed at modelling and forecasting of the daily stock prices of NMB and CRDB on a short-term basis by using the autoregressive integrated moving average (ARIMA) models and exponential smoothing models. It was guided by three specific objectives, which were: to fit models to the daily stock price data of NMB and CRDB banks in Tanzania, to select the best fitted model of CRDB and NMB by using model selection criteria and; to forecast and evaluate the forecasted daily stock p...
ABSTRACT Sign language has been used by Speech impaired people for communication purposes. Despite being an effective form of communication for speech impaired people, still there is a challenge for people who are unaware of sign language especially those with no such impairment to communicate with speech impaired people. Since Sign Language is a visual based language, several machine learning techniques have been used in sign language translation for better performance results. However, sign...
ABSTRACT A number of phenomena in modern science can be conveniently described in terms of problem for hyperbolic equation with Carleman estimates to the solution of inverse problem. The purpose of this study is to give a survey of the solution of the inverse problems for hyperbolic equation by Carleman estimates. We extend the results and prove the Carleman estimate focusing on an inverse problem for a simple hyperbolic equation. Also we derive the Lipschitz's stability by energy estimate; w...
ABSTRACT Financial institutions play a vital role to enhance the socio-economic development of any country. Despite being a key player in socio-economic development, large group of people is still isolated in accessing formal financial services. Saving and Credit Cooperative Societies (SACCOS) are type of Microfinance Financial Institutions (MFIs) that came to solve the problem of isolating many people in attaining financial services. Loan default is a big challenge that causes weak performan...
Abstract Mushrooms are considered as one of the notable functional foods for human consumption that have been cultivated and gathered for hundreds of years. The usage of mushrooms has expanded to a wide extent not only as food but also in the area of pharmaceuticals and nutraceuticals. In particular, mushrooms have been appreciated and consumed for both their nutritional value and medicinal properties. Bioactive molecules, particularly polysaccharides (PS) from mushrooms have been the subject...