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Browsing Journal Articles by Author "Hamam, Y"

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AC induced corrosion assessment of buried pipelines near HVTLs: A case study of South Africa

Author: Adedeji, KB ; Ponnle, AA ; Abe, BT ; Jimoh, AA ; Abu-Mahfouz, Adnan MI ; Hamam, Y Date: Jun 2018 Metallic pipelines have attendant problems of alternating current (AC) assisted corrosion when installed in the utility corridor with high voltage transmission lines. Research studies in the past and recent years have shown that this corrosion ... Read more
Comparative study of graphene-polypyrrole and borophene-polypyrrole composites: Molecular dynamics modeling approach

Author: Folorunso, Oladipo ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: 2021 In the search for the solution to energy storage problems, this study investigates the interfacial energy interaction and temperature stability of the composites made of polypyrrole-graphene-borophene (PPy-Gr-Bon) by using molecular dynamics ... Read more
Dynamic power control for wireless backbone mesh networks: a survey

Author: Olwal, TO ; Van Wyk, BJ ; Ntlatlapa, Ntsibane S ; Djouani, K ; Siarry, P ; Hamam, Y Date: 2010 With the tremendous growth of wireless networks into the next generation to provide better services, Wireless Mesh Networks (WMNs) have emerged to offer ubiquitous communication and seamless broadband applications. WMNs are hybrid networks ... Read more
Estimation of water demand in water distribution systems using particle swarm optimization

Author: Letting, LK ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: Aug 2017 Demand estimation in a water distribution network provides crucial data for monitoring and controlling systems. Because of budgetary and physical constraints, there is a need to estimate water demand from a limited number of sensor measurements. ... Read more
GUI-Based AC induced corrosion monitoring for buried pipelines near HVTLs

Author: Adedeji, KB ; Ponnle, AA ; Abe, BT ; Jimoh, AA ; Abu-Mahfouz, Adnan MI ; Hamam, Y Date: Nov 2018 In this paper, a stand-alone application with graphical user interface (GUI) developed for monitoring AC induced corrosion expectancies of buried pipelines near a high voltage AC transmission line is presented. A Rand water site, South Africa, ... Read more
Impact of pressure-driven demand on background leakage estimation in water supply networks

Author: Adedeji, KB ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: 2019 Increasing water demand due to urbanization creates a need to develop schemes for managing water supply networks (WSNs). In recent years, hydraulic modeling of WSNs has been used to assess the state of networks in terms of leakage analysis ... Read more
Investigation of graphene loaded polypyrrole for lithium-ion battery

Author: Folorunso, O ; Hamam, Y ; Sadiku, R ; Adekoya, GJ ; Ray, Suprakash S Date: Apr 2020 The discredit state of lithium-ion (Ln) battery is as a result of the challenges associated with electrodes, inadequate power and energy densities. For a battery to be classified as suitable for electric vehicle and grid power suppliers, ... Read more
Leakage detection and estimation algorithm for loss reduction in water piping networks

Author: Adedeji, KB ; Hamam, Y ; Abe, BT ; Abu-Mahfouz, Adnan MI Date: Oct 2017 Water loss through leaking pipes constitutes a major challenge to the operational service of water utilities. In recent years, increasing concern about the financial loss and environmental pollution caused by leaking pipes has been driving ... Read more
Multiple-state based power control for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Djouani, K ; van Wyk, BJ ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: 2009 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in wireless mesh networks (WMNs). In this paper, we present asynchronous multiple-state based power control for MRMC WMNs. First, WMN is represented as a set of disjoint ... Read more
Overview, comparative assessment and recommendations of forecasting models for short-term water demand prediction

Author: Anele, AO ; Hamam, Y ; Abu-Mahfouz, Adnan MI ; Todini, E Date: Nov 2017 The stochastic nature of water consumption patterns during the day and week varies. Therefore, to continually provide water to consumers with appropriate quality, quantity and pressure, water utilities require accurate and appropriate short-term ... Read more
Parametric analysis of electrical conductivity of polymer-composites

Author: Folorunso, O ; Hamam, Y ; Sadiku, R ; Ray, Suprakash S ; Joseph, A Date: Jul 2019 The problem associated with mixtures of llers and polymers is that they result in mechanical degradation of the material (polymer) as the ller content increases. This problem will increase the weight of the material and manufacturing cost. ... Read more
Plastics in municipal drinking water and wastewater treatment plant effluents: Challenges and opportunities for South Africa - a review

Author: Iroegbu, AOC ; Sadiku, RE ; Ray, Suprakas S ; Hamam, Y Date: Mar 2020 Pervasive plastic wastes, pollution and detrimental environmental ethics are a serious threat in South Africa. Compared with global trends, most studies undertaken on plastic pollutions in water bodies across South Africa have generally been ... Read more
Predictive uncertainty estimation in water demand forecasting using the model conditional processor

Author: Anele, AO ; Todini, E ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: Apr 2018 In a previous paper, a number of potential models for short-term water demand (STWD) prediction have been analysed to find the ones with the best fit. The results obtained in Anele et al. (2017) showed that hybrid models may be considered as ... Read more
Real-time dynamic hydraulic model of water distribution networks

Author: Abu-Mahfouz, Adnan MI ; Hamam, Y ; Page, Philip R ; Adedeji, KB ; Anele, AO ; Todini, E Date: Mar 2019 The impact of climate change and increasing urbanisation throughout the world has forced water utility managers to increase the efficiency of water resources. Reduction of real (or physical) water losses plays a crucial role in improving the ... Read more
A review of the effect of AC/DC interference on corrosion and cathodic protection potentials of pipelines

Author: Adedeji, KB ; Ponnle, AA ; Abe, BT ; Jimoh, AA ; Abu-Mahfouz, Adnan MI ; Hamam, Y Date: Dec 2018 Pipelines installed in the energy utility corridor with alternating current (AC) or direct current (DC) sources have attendant problem of induced corrosion. In the past years, AC or DC induced corrosion of metallic pipelines has been a major ... Read more
Sustainable chemicals: A brief survey of the Furans

Author: Iroegbu, AO ; Sadiku, ER ; Ray, Suprakash S ; Hamam, Y Date: Feb 2020 Whether it is in the textiles, paints and coatings, energy sector, polymers, plastics, woods, sugar chemistry, pharmacy, aerospace and the automotive industries, the multiplicity of applications of furans and their derivatives, have made ... Read more
Synthesis methods of borophene, graphene-loaded polypyrrole nanocomposites and their benefits for energy storage applications: A brief overview

Author: Oladipo, Folorunso ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: Mar 2021 The bane of energy sufficiency lies in the inability to harness and store the plethora of the world's renewable energies. Although many materials have been used in the development of electrochemical storage devices: low energy density, low ... Read more
Theoretical analysis of borophene for lithium ion electrode

Author: Folorunso, O ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Joseph Adekoya, GJ Date: Mar 2020 Borophene, a 2-dimensional material with efficacious properties (electrical, thermal and mechanical), is a very promising material that is expected to contribute, significantly, in the revolutionization of electrochemical energy storage, for ... Read more
Towards achieving a reliable leakage detection and localization algorithm for application in water piping networks: an overview

Author: Adedeji, KB ; Hamam, Y ; Abe, BT ; Abu-Mahfouz, Adnan MI Date: Sep 2017 Leakage detection and localization in pipelines has become an important aspect of water management systems. Since monitoring leakage in large-scale water distribution networks (WDNs) is a challenging task, the need to develop a reliable and ... Read more
Transmission probability-based dynamic power control for multi-radio mesh networks

Author: Olwal, TO ; Ntlatlapa, Ntsibane S ; Hamam, Y ; Aron, F ; Van Wyk, BJ ; Johnson, DL Date: Sep 2008 This paper presents an analytical model for the selection of the transmission power based on the bi-directional medium access information. Most of dynamic transmission power control algorithms are based on the single directional channel and ... Read more

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