Towards Arresting the Decline in Academic Standards of Engineering Education in Nigerian University

Technological advancement serves as a major key to a nation's development. On the other hand, proper engineering knowledge (acquired through appropriate structures) plays significant roles in the attainment of a high level of technological advancement. Most developing countries find it difficult to impact adequate knowledge and training to engineers at different levels of training. An overview of the problems confronting engineering education, and factors that affects engineering education in Nigeria is taken in this paper. The paper identifies lack of adequate or competent human resources, government attitude towards vocational education or technological development in term of funding, poor maintenance, lack of relevant adequate infrastructures, and political situation as the dominant problems faced by engineering education in Nigeria. The paper, in addition to finding solutions to the above problems, recommends proper care in admitting students, infrastructural inadequacy needs to be recognized and properly articulated with a view to being redressed, appropriate government policy and disposition and intervention of professional and international bodies (through provision of financial and material assistance) for assisting in the training and practice of engineers in Nigeria and in order that the country may achieve meaningful development comparable with foreign countries

A Robust Speed-Based Handover Algorithm for Dense Femtocell/Macrocell LTE-A Network and Beyond

Femtocells are currently being deployed in the present generation of cellular networks because of their ability to provide increased data rate at home and offices. This development together with the recent advances in technology brings about a huge increment in bandwidth required to meet the future demand for data by the ever increasing mobile devices. It is envisaged that with dense deployment of femtocells, the present challenge in terms of data requirement as well as the future demand will be met. Therefore, it is imperative to intensify the research in the area of handover management in femtocell/macrocell integrated network using a high dense network scenario that will dominate the future network. Presently, most research works in this area do not focus much on a dense deployment of mobile users in a femtocell/macrocell integrated network. Also, many existing handover algorithms were not designed to work in a highly mobile and dense environment. In this work, the authors propose a robust CAC handover algorithm for a dense femtocell/macrocell LTEAdvanced integrated network. The proposed CAC algorithm is efficient to handle calls in a highly dense and mobile user environment. The simulation results of the proposed algorithm show that the handover call dropping probability, call blocking probability and handover probability are considerably reduced

Design and Construction of 1KW (1000VA) Power Inverter

The purpose of this project is to design and construct a 1000Watts (1KW) 220 Volts Inverter at a frequency of 50Hz. This device is constructed with locally sourced components and materials of regulated standards. The basic principle of its operation is a simple conversion of 12V DC from a battery using integrated circuits and semiconductors at a frequency of 50Hz, to a 220V AC across the windings of a transformer. An additional power supply to the public power supply with the same power output is thus provided at an affordable price

A Simulation-Based Performance Evaluation of AODV and DSR in Mobile Ad-Hoc Networks (MANETs)

This work evaluates and compares the performance of two reactive routing protocols for mobile ad-hoc networks: Ad hoc On-demand Distance Vector (AODV) and Dynamic Source Routing (DSR). The study focuses on the design and evaluation of routing protocols in mobile ad-hoc networks. Study and implementation of these protocols are been carried out using network simulator (ns2) and metrics such as Packet Delivery Fraction, Average end-to-end Delay, Routing overhead and Normalized Routing are used for performance analysis. Results are presented as a function of these metrics and the graphs generated show that DSR performs better than AODV when fewer nodes are been used

Performance Evaluation of Common Encryption Algorithms for Throughput and Energy Consumption of a Wireless System

This work evaluates the effect(s) of common encryption algorithms on throughput, processing time and power consumption of a wireless system. Three different encryption algorithms commonly used for wireless local area network (WLANs) namely; Advanced Encryption Standard (AES), Data Encryption Standard (DES), and Blowfish were evaluated and studied. The three algorithms were simulated and compiled using the default settings in .NET 2010 visual studio. The results show that Blowfish algorithm outperforms other algorithms in terms of energy consumption, processing time and throughput for Text data, Audio files and Image files. While DES is optimal both in its throughput and energy requirement