There has been a downturn in the number of medium frequency - amplitude modulated (MF - AM) broadcasting stations currently operating in Nigeria. This is due to the widespread use of frequency modulation (FM) band for ...

The variation of point refractivity gradient with time of the day as well as seasons provide information on the occurrence of multipath fading which often cause reduction in signal strength. There is therefore the need to ...

To achieve good design on the Line-of-Sight (LOS) propagation, the knowledge of the structure of the radio refractive index of the lower atmosphere (Troposphere) is required. In this study,the measurement of the meteorological ...

For over a century, numerous research studies have been carried out to understand rainfall using techniques ranging from manual gauges, drop counting to satellite based data. The presented work focuses on the development ...

Optimal experimental designs are a set of array of design points that are most efficient with respect to some statistical criteria. Russell et al. (2009) found locally D-optimal designs for onevariable first order model ...

This research work focused on Bayesian estimation of linear regression to determine the quantile range at which optimal hyperparameters of normally distributed data with vague information could be obtained. This is a ...

The method of Generalized Estimating Equation has been of great use in the research world of analysis of correlated data. Data sets that are collected for a single subject over several time frames exhibit this property ...

The variation of refractivity with height is of major importance in determining the path of propagation of radio wave in the troposphere. The impact of anomalous propagation such as sub refraction, super refraction and ...

The effect of the interaction between the solar wind and magnetosphere on the ionosphere provide even a greater challenge as it introduces more irregularity in the behavior of the ionosphere, which has already possess a ...

Antenna design and orientation have important effects on radio wave propagation. The existence of abnormal propagation events (ducts, super and sub refraction) offers valuable information about the propagation of radio ...