Engineering

Research Papers/Topics in Engineering

Design Of An Electronic Siren Circuit

Siren is a device that produces loud noise. They are the means communication. Sirens can be seen in emergency vehicles such as police cars, ambulances and fire trucks.Generally, sirens are used as indication or warning. There are different circuits to produce different sirens. The word siren first originated in Greek mythology and was also later used to refer to mermaids. Language and literature have used the word siren as indicative of dangerous temptations. The sire...

Strategies For Optimizing Password Management Against Versatile Attacks

ABSTRACTManaging passwords is a significant problem for most people in the modern world. Passwords are a critical part of information and network security. Passwords serve as primary authentication method to protect user accounts but a poorly chosen password, if compromised, could put the entire network at risk. Many users do not understand why good passwords and password management are important for information systems. “We’re secure! We use passwords!” H...

Design And Construction Of A Door Lock Alert System Using A Microcontroller

ABSTRACTThis project focused on how one can safely keep the house safely locked throughminimizing the access to its door unit, monitoring whoever is trying to open thedoor and providing an alert to the security agencies in case he/she is proved anintruder by the system. The work is arranged mainly in five chapters, Chapter oneincludes the introduction of a system. Chapter two discusses the literature relatedto the system, Chapter three illustrates the methodologies used in coming up wit...

Design And Fabrication Of An Electronic System For Pressure And Temperature Measurement In Thin Film Deposition Systems

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 ...

Compressionion Of Pulse Code Modulation Signal Using Type Iv Discrete Cosine Transform Based On The Mp3 Model.

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 app...

LPG Gas Monitoring and Cylinder Booking Alert System

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 im...

Design, Development And Testing Of A Liquefied Petroleum Gas Powered Tomato Dryer With Water Energy Stotage

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 pe...

Designing And Fabrication Of A Current-Voltage Curve Meter For Electrical Characterization Of Photovoltaic Modules

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 ...

Study Of Snxsey Thin Films For Phase Change Memory (Pcm) Applications

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 s...

Influence Of Integration Of Information And Communication Technology In Teaching Biology On Students’ Performance In Makueni County Secondary Schools, Kenya

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 teac...

Optical And Electrical Characterization Of Cdxse1-Xs And Cu2sthin Films For Solar Cell Application

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...

E-Learning Adoption And Utilisation: A Comparative Study Of Kenyatta University, Kenya And University Of Cape Coast, Ghana

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 Co...

Availability And Use Of Community Resources For Teaching Business Studies In Secondary Schools In Ruiru District Kiambu County,Kenya

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 an...

Design Of An Fm Bugger Circiut

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 t...

Design Of An Intelligent Room Light Controller With Bidirectional Counters For Energy Efficiency Applications

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 thes...


121 - 135 Of 2870 Results