Department of Mechanical Engineering

Permanent URI for this collectionhttps://irepos.unijos.edu.ng/handle/123456789/11386

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    Energy Exploitation And Environmental Impact In Nigeria: The Way Forward.
    (Journal of Energy Technologies and Policy, 2013) Maren, I. Borok1*, Mangai, M. Morgan1, Golkus, J. Ishaku2
    Energy is the basis of industrial civilisation; without energy, modern life would be difficult to live. However, the exploitation and utilisation of energy in this case non-renewable energy (oil, gas and coal) comes with effects that impact negatively on the environment such as environmental pollution which affects weather conditions, soil fertility, aquatic habitats and wildlife animals. This paper, after highlighting the various environmental impact of energy exploitation, emphasizes on the need for the stakeholders, in this context, government, engineers, scientist, investors and community leaders to rise up to the challenges and ensure that the impacts of energy to the environment are addressed. It advocates for interdisciplinary approach and strict adherence to professional ethics by engineers and scientists to address the problems while the appropriate government agencies should enforce the various environmental laws. And judging by the threat the non-renewable energy exploitation poses to humans and the environment, the paper suggests a gradual shift to clean energy technology for sustainable development.
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    The Analysis Of Inter Cell Handover Dynamics in A GSM Network
    (International Journal of Innovative Research in Science, Engineering and Technology, 2014-06) Dajab, Danjuma. D.; Abednego, Galadima.; Buba, Bajoga,G.
    Efficient Handover mechanism in a GSM network is one of the parameters critical to GSM network service quality (QoS) and customer satisfaction. Handover is the process that transfers an ongoing call from one cell to another as the users move through the coverage areas of the cellular systems. This research focuses on analysing and optimizing intercell handover dynamics in Airtel Network in Kano. A three months call record sample data was used. Several cells in the Airtel Network in Kano were investigated by profiling and analysing their performance using standard mathematical relationships of Handover success rate, Call setup success rate, Blocking probability, Call drop rate which are relevant Key Performance Indicators. Data was obtained in Microsoft Excel format. Performance evaluation was carried out using Nigerian Communication Commission (NCC) QoS standard for Macrocell as benchmark. The evaluation revealed that seventy two percent (72%) of cells considered performed below NCC targets for Call Setup Success Rate (CSSR), Sixty four percent (64%) failed to achieve Handover Success Rate (HSR) and Standalone Dedicated Control Channel blocking rates targets, twenty one percent (21%) failed to achieve congestion targets. Average call drop rate per cell was predicted to be six (6%).