Search

As the Internet takes an increasingly central role in our communications infrastructure, the slow convergence of routing protocols after a network failure becomes a growing problem. During failures, the forwarding paths in a network change, the forwarding tables in the routers need to be updated....

Digital Terrestrial Television (DTT) originates from the Regional Radio Communication Conference of 2006 (RRC06) and the subsequent Geneva 2006 agreement (GE06) of International Telecommunication Union (ITU) recommendations which made a resolution that member states signatory to the agreement...

Planet Earth is approximately spherical in shape, and is three dimensional. To map the Earth on a flat piece of paper, in two dimensions, a map projection must be carried out. A map projection is a mathematical technique of how to represent the Earth’s curved surface on a flat surface. In Zambia,...

Post-harvest Losses (PHLs) in fruits are high, in some cases, reaches 50 %. To reduce these PHLs, several technologies have been developed; among them is solar drying technology (SDT). Several SDTs are available including solar tunnel dryers. Solar tunnel dryers are described as relatively...

The aim of this study was to carry out an experimental investigation on drying fresh Kapenta (Stolothrissa tanganicae), in a Greenhouse Solar Dryer and to evaluate a suitable thin-layer drying model for fresh Kapenta. The nutritional constituents and quality of dried Kapenta produced from a...

The objective of the research was to optimize memory usage in body sensor network (BSN) nodes during key agreement generation. In BSNs, it is important to secure communication between BSN nodes to ensure confidentiality, authenticity, and integrity of the information. The BSN node is faced with...

The behaviour of sodium hydroxide treated sisal fibre-reinforced polyester composite subjected to environmental ageing conditions has been studied with the aim of modelling its effect on the composite fracture damage for the purpose of long-term performance prediction. The composite was...

Monitoring and Evaluation (M&E) is an essential aspect in the management of any project. It explains whether a project is meeting its objectives and identifies project areas that need to be adjusted. ZESCO limited is Zambia’s largest utility company responsible for generation, transmission and...

Remote sensing provides area coverage, and aids the mapping and classification of land cover features, such as vegetation, soil, water and forests. However, with remote sensing using medium to coarse spatial resolution imagery, some difficulties are encountered in the definition of vegetation...

Uninterruptible Power Supplies (UPSs) are widely used for power conditioning applications, whereby the load is to be supplied with current and voltage waveforms containing minimal disturbance. A UPS also provides emergency power to critical loads in case of utility mains failure, and as such...