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Browsing Research Outputs (Electrical & Mining Engineering) by Title

Browsing Research Outputs (Electrical & Mining Engineering) by Title

Now showing items 1-20 of 45

Access control with automated on duty notification tool in air traffic services

Ntombela, Nkululeko; Umenne, Patrice (IEEE, 2020-08-04)

This project provides a solution that alerts management if an Air Traffic Service Unit (ATSU) tower is unmanned during operational hours. The project makes provision for an access control with an automated on duty notification ...
AFM analysis of micron and sub-micron sized bridges fabricated using the femtosecond laser on YBCO thin films.

Umenne, Patrice (MDPI micromachines, 2020-12-08)

The project arose as a result of the need to use the femtosecond laser to fabricate sub-micron and Nano-sized bridges that could be analyzed for the Josephson effect. The femtosecond laser has a low pulse duration of 130 ...
The alignment of the information technology’s Enterprise Resource Planning rollout strategy with the business strategy in a semi-governmental organisation

Bopape, Harry Maishe; Lubbe, Sam, 1952-; Klopper, Rembrandt (2008-07-10)

Enterprise resource planning (ERP) systems are highly intricate Information Systems (IS). The im-plementation of this type of integrated system is difficult and high in cost. It places immense strain on time and resources. ...
Analysis of the IEC 61850 Protocol when used for communication during Maintenance Operations in an Electrical Substation Grid

njova, dion; ogudo, kingsley; Umenne, Patrice (ACM, 2020-09-13)

During Substation maintenance a bay is taken out of service, tested and during testing traffic is generated on the Substation Communication Network (SCN) in a power utility. A model of a Substation Communication Network ...
Application of HYDRA computer to collect status information for network quality of service

Odhiambo, Marcel O.; Van Wyk, Barend J.; Van Wyk, Michael A. (SCI, 2005-07-13)

Users of telecommunication services are becoming more adamant about the quality of service offered by network service providers. Users are demanding performance levels which guarantee that user data will not suffer degradation ...
The Characterization of the Electric Double-Layer Capacitor (EDLC) Using Python/MATLAB/Simulink (PMS)-Hybrid Model

Chrispin Tumba Tshiani; Patrice Umenne (MDPI, 2022-07-18)

This paper investigates the characterization of an electric double-layer capacitor (EDLC). In this study, the 300 F and 400 F EDLC supercapacitors are connected in a circuit in a laboratory experiment to produce their ...
Coal as a strategic resource in South Africa

Dikgwatlhe, Pule (Society of Mining Professors (SOMP) in collaboration with the Mining Engineering Education South Africa (MEESA) and The South African Institute of Mining and Metallurgy (SAIMM), 2018-03-13)

The higher price of oil and gas has positioned coal as the premium source of energy. This is likely to remain so as electricity demand is steadily rising. Listed as a strategic resource to the South African economy, coal ...
Constrictions Fabricated on YBCO Thin Film using the Femtosecond Laser: Limiting Factors.

Patrice Umenne; V.V Srinivasu (Acta Physica Polonica A, 2018-07-01)

In this paper we report on the development of a new application of the femtosecond laser, namely, the fabrication of micron, sub-micron and nano sized constrictions on YBCO superconductive thin films. The fabricated micron, ...
Cramer-Rao bound on timing recovery for GSM receivers

Olwal, T.; Van Wyk, M. A.; Chatelain, D.; Odhiambo, M.; Van Wyk, B. J. (2006-05-17)

The problem of timing recovery in cellular receiver systems is critical. This is because synchronization functions must follow rapid parameter changes inherent in mobile systems. The ultimate goal is therefore to achieve ...
Design of a Fingerprint Biometric Access Control System with GSM Functionality

Govender, Terene; Umenne, Patrice (IEEE, 2021-08-05)

We live in a world with ever-increasing digital technology, hence the need for enhanced security systems is vital. In the past a simple PIN or password would have been sufficient to maintain the integrity of security ...
Design of a PV Based Power Supply with a NonInverting Buck-Boost Converter

Ogudo, Kingsley; Umenne, Patrice (IEEE, 2019-12-09)

This paper presents the design of a photovoltaic based power supply using a non-inverting buck-boost converter to charge batteries. The batteries can be used to power a load as back-up power when there is no sunlight. ...
Design of a Smart Home System Using Bluetooth Protocol

Zondo, Sandile; Ogudo, Kingsley; Umenne, Patrice (IEEE, 2020-08-04)

Home automation is an intelligent, functional as a unit system that facilitates home processes without unnecessarily complicating the user’s life. Devices can be connected, which in turn connect and talk through a ...
Dynamic pricing control in cellular networks

Aloo, P.; Van Wyk, M.A.; Odhiambo, M.O.; Van Wyk, B.J. (ICTe Africa, 2006-05-19)

In this paper we present dynamic pricing control for network quality of service (QoS) in cellular networks. Dynamic pricing policies allow the network service providers to charge a cost per time unit depending on the ...
Dynamic pricing in cellular networks for QoS

Aloo, P.; Van Wyk, M.A.; Odhiambo, M. O.; Van Wyk, B.J. (SATNAC, 2005-09)

In this work in progress paper we describe dynamic pricing strategies for network quality of service (QoS) in cellular networks. Dynamic pricing policies allow the network operator to charge a cost per time unit depending ...
Emulating Software Defined Network Using Mininet and OpenDaylight Controller Hosted on Amazon Web Services Cloud Platform to Demonstrate a Realistic Programmable Network.

Lindinkosi L. Zulu; Kingsley Ogudo; Umenne, Patrice (IEEE Mauritius Subsection on IEEEexplore, 2018-12-07)

In this paper, a Software Defined Network was created in Mininet using python script. An external interface was added in the form of an OpenDaylight controller to enable communication with the network outside of Mininet. ...
Enhancing video streaming in 802.11wireless mesh networks using two-layer mechanism solution

Moleme, N. H.; Odhiambo, M.O.; Kurien, A.M. (AFRICON, 2009-09-23)

Multihop wireless mesh networks have emerged as the next generation in wireless network technology. This is due to the advantages provided by the mesh network technology. WMNs provides ease of installation, cost effective ...
Evaluation of the effectiveness of Virtual laboratory’s for Electronics in the Open distance learning Context.

Umenne, Patrice; Hlalele, Sidwell (2020-08-04)

In this paper the module practical electronics offered at the University of south Africa in the Open distance learning context is discussed. The module was taught, and experiments were performed using a virtual laboratory ...
Fabrication of S-shaped micron-sized constrictions on FeC (steel) surface using femtosecond laser ablation with beam shaping

Umenne, Patrice (Springer, 2021-09-14)

In this paper, we demonstrate the fabrication of S-shaped micron-sized constrictions on steel (Fe3CII) surface using the femtosecond laser ablation technique. The femtosecond laser used has a wavelength of 775 nm, a power ...
Femtosecond laser fabrication of micron and sub-micron sized S-shaped constrictions on high Tc superconducting YBCO thin films: ablation and lithography issues

Umenne, Patrice; Srinivasu V.V., / (© Springer Science+Business Media New York 2016, 2016-12-19)

We demonstrate the fabrication of micron and sub-micron sized constrictions on high TcTc superconducting YBa2Cu3O7−x (YBCO) thin films using the femtosecond laser. The lithography process was optimized by programming the ...
HYDRA : parallel and distributed swarm computer architecture

Odhiambo, Marcel O. (ROVPIA, 1999-07-16)

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