ABSTRACT This project focused on how one can safely keep the house safely locked through minimizing the access to its door unit, monitoring whoever is trying to open the door and providing an alert to the security agencies in case he/she is proved an intruder by the system. The work is arranged mainly in five chapters, Chapter one includes the introduction of a system. Chapter two discusses the literature related to the system, Chapter three illustrates the methodologies used in coming up wit...
Temperature and pressure are quantities of great importance in various applications such as integrated circuit (IC) manufacture and vacuum coating just to mention a few. Therefore, their accurate measurement is inevitable. However, it is tiresome to measure and record these quantities manually by pen and paper when operating a thin film deposition system. This approach is not only time consuming but also causes human errors on the measured physical parameters. To solve this problem, an automa...
Digital signal compression in the recent past has become the mainstay of the basic technologies of multimedia due to the bandwidth and storage limitations inherent in networks and computers. The change from circuit switched to packet switched systems in the telecommunication infrastructure in the past few years, has reflected on the way Pulse Code Modulation (PCM) signal which in essence is a raw audio signal, is carried in present systems. The purpose of this study was to design an applicati...
LPG is widely used in our everyday life. It should be handled with care as it is highly flammable which causes а fire or explosion. The above circumstances can be overcome by implementing techniques for detecting accurate gas leaks. The main aim of this paper is to put forth an IOT gas management system that will be able to sense gas leakage and fire detection. Whenever leakage of gas is detected, the user will be alerted through SMS and call so that the user can turn off the gas valve immed...
Despite high levels of good quality tomato production in Kenya, about 40% of the produce goes to waste. This loss is attributed to glut during the harvesting season, poor feeder roads which lead to inaccessibility to the market centres as well as bruise damage during transport. This translates to a huge financial loss to tomato farmers. Preservation through drying technology can help in reducing this loss. Therefore, this study was initiated to investigate the performance of an experi...
In the recent past the use of renewable energy as an alternative source of energy has increased considerably. The solar cells modules manufacturing technology is becoming more reliable and economical. The feasibility of photovoltaic solar energy as an alternative source of energy has become real. The low efficiency and the weather condition dependency give room for improvement of this technology to extract maximum power for different environmental conditions. Therefore, the current–volt...
Phase Change Random Access Memory (PCM) is one of the most optimized candidates for the next generation non-volatile memory due to its fast operation speed, high scalability, low power operation and fabrication costs. The transition from the amorphous to the crystalline phase is induced by heating the material above its crystallization temperature for a long enough time, and the switching back to the amorphous phase is realized by melting and quenching the material fast enough that it solidif...
ABSTRACT There are great technological advancements in global application of ICT and hence the need for its use in teaching Biology. Lack of application of ICT in pedagogy might have led to poor performance in science subjects like Biology. The study sought to investigate the influence of integration of ICT in teaching Biology on students’ performance in secondary schools. The specific objectives of the study were: to find out the ICT resources available in the schools for use in teaching ...
ABSTRACT There has been a steady increase in demand for clean and renewable energy globally. As a result, more effort has been put into research to harness solar energy from the sun to generate electricity using solar cells. Solar cells convert solar energy directly into electricity. Recent research findings indicate that properties of thin film solar cells strongly depend on the various deposition techniques chemical bath deposition (CBD) being one of them. This technique yields stable, adh...
Abstract Although e-learning provides enormous opportunities, its implementation in Universities in the developing world is low. Many people are sceptical about its effectiveness to serve as an alternative means to attaining higher education. There are limited studies within developing countries centred on e-learning adoption and utilisation. This study sought to find out the major challenges facing e-learning adoption at the Centre for Continuing Education (CCE), University of Cape Coast, (...
ABSTRACT Community resources when used in teaching and learning enhance understanding and retention. This study examined the availability and use of community resources in teaching Business Studies in secondary schools in Ruiru District Kiambu County Kenya. A descriptive research method was adopted. A sample of 10 principals, 10 Business Studies teachers and 100 students was drawn from a target population of 1222 respondents. Data was collected using interview schedule for Principals and que...
ABSTRACT FM bugger is a device which generates frequency modulated signal. It is one element of a radio system which, with the aid of an antenna, propagates an electromagnetic signal. Standard FM broadcasts are based in the 88 - 108 MHz range. The signal (from the microphone) is fed into the audio frequency (AF) for amplification then to the modulator which combines the modulating signal with the carrier wave transports the modulated signal through (RF) for final amplification to the antenn...
ABSTRACT Despite the installation of light energy waste control systems in modern buildings, many people end up paying for high energy bills. The cost of installation of these systems is usually high, and most of them are inefficient making it a major concern to the normal user. Due to technological advancement, sensors and microcontrollers are employed in a wide range of applications. This includes domestic and industrial fields where they aid in control of automated processes. In these app...
The reservoir characteristics of the gas condensate well is special and the changes of the behavior of the well have a significant impact to the production rate. When we do a proper optimization that can lower the operating costs, maximizing HC recovery and the net present value of a project can be increased. The optimization of the well level can be accomplished by adjusting well parameters such as tubing size, wellhead and the skin factor. All of these parameters were investigated with the ...
ABSTRACT A linearly-polarized aperture coupled microstrip antenna design is characterized and optimized using FEKO antenna simulation software. One of the major drawbacks of these microstrip antennas is their narrow bandwidth. Aperture coupled being one of the feeding technique has proven to be a solution to this problem. In this research a patch antenna that is coupled to a microstrip-line by an aperture in the intervening ground plane has been designed and fabricated and implemented. The sh...