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Browsing Conference Publications by Author "Hamam, Y"

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Autonomous transmission power adaptation for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Sep 2008 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in WMNs. Previous studies have emphasized throughput maximization in such systems as the main design challenge and transmission power control treated as a secondary ... Read more
Autonomous transmission power adaptation for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Sep 2009 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in WMNs. Previous studies have emphasized through- put maximization in such systems as the main design challenge and transmission power control treated as a secondary ... Read more
Burst leakage-pressure dependency in water piping networks: Its impact on leak openings

Author: Adedeji, KB ; Hamam, Y ; Abe, BT ; Abu-Mahfouz, Adnan MI Date: Sep 2017 In most water distribution systems, an appreciable volume of water is lost through leaking pipes, resulting in financial loss and environmental pollution among others. Thus, water loss constitutes a major challenge to utilities around the ... Read more
Decentralized power control for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Sep 2010 Multi-Radio Multi-Channel (MRMC) WMNs result in power control problems including interference, un-scalable connectivity and energy consumption. Several previous studies have focused on the single radio wireless configurations while studying ... Read more
Effect of pipe materials on BLE using graph-based integrated hydraulic model

Author: Adedeji, KB ; Hamam, Y ; Abe, BT ; Abu-Mahfouz, Adnan MI Date: Jul 2018 The battle of background leakage estimate (BLE) in water supply networks has been the subject of discussion in the last years. This paper aims to investigate the effect of pipe materials with particular reference to their impact on the BLE ... Read more
Graph based hydraulic modelling of pressure in water distribution networks

Author: Mpiana, LA ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: Sep 2017 The increased demands of water and high water losses in the past decade have brought a special attention to Water Distribution Networks. An efficient water distribution utilities management requires an adequate hydraulic modelling of the water ... Read more
Hand based visual intent recognition algorithm for wheelchair motion

Author: Luhandjula, T ; Djouani, K ; Hamam, Y ; Van Wyk, BJ ; Williams, Q Date: May 2010 This paper describes an algorithm for a visual human-machine interface that infers a person’s intention from the motion of the hand. Work in progress shows a proof of concept tested on static images. The context for which this solution is ... Read more
Improving the physical layer security of wireless communication networks using spread spectrum coding and artificial noise approach

Author: Adedeji, K ; Hamam, Y ; Abe, B ; Abu-Mahfouz, Adnan MI Date: Sep 2016 Recent advances in technologies has led to the use of wireless communication networks for the transmission of information. However, the broadcast nature of wireless channels has made it vulnerable to attacks. In this paper, we present work ... Read more
Increasing supported VoIP flows in WMNs through link-based aggregation

Author: Olwal, T ; Okech, J ; Hamam, Y ; Kurien, A ; Odhiambo, M Date: Oct 2008 As Voice over IP (VoIP) becomes a reality, service providers will be able to offer the service to remote and over populated areas that currently are not or are only partially reached by available Public Switched Telephone Network (PSTN). The ... Read more
An interface for coupling optimization algorithms with EPANET in discrete event simulation platforms

Author: Letting, LK ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: Jul 2017 The application of simulation optimization in water distribution network analysis and design is a promising method for generating solutions to existing challenges. The absence of a standard interface for coupling the open source EPANET software ... Read more
Interference-aware power control for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Sep 2009 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in WMNs. In this paper, we present a dynamic power control for MRMC WMNs. First, WMN is represented as a set of disjoint Unified Channel Graphs (UCGs). Second, each ... Read more
Leakage detection algorithm integrating water distribution networks hydraulic model

Author: Adedeji, K ; Hamam, Y ; Abe, B ; Abu-Mahfouz, Adnan MI Date: Jun 2017 Water loss through leaking pipes is inexorable in water distribution networks (WDNs) and has been recognized as a major challenge facing the operation of municipal water services. This is strongly linked with financial costs due to economic ... Read more
Network preservation through a topology control algorithm for wireless mesh networks

Author: Aron, FO ; Olwal, TO ; Kurien, A ; Hamam, Y Date: Sep 2008 Wireless mesh networks (WMNs) is becoming a promising new technology for extending coverage to farflung rural areas. This it achieves by linking the various wireless LANS (WLANs) in distant locations thus providing a vital mode complimentary ... Read more
Pipeline grounding condition: A control of pipe-to-soil potential for AC interference induced corrosion reduction

Author: Adedeji, KB ; Abe, BT ; Hamam, Y ; Abu-Mahfouz, Adnan MI ; Shabangu, TH ; Jimoh, AA Date: Feb 2017 The interference effect from high voltage overhead lines on nearby metallic pipelines is a major challenge for utility owners due to the induced AC potentials on metallic pipelines. Nevertheless, numerous mitigation techniques have been ... Read more
Pressure management strategies for water loss reduction in large-scale water piping networks: a review

Author: Adedeji, K ; Hamam, Y ; Abe, B ; Abu-Mahfouz, Adnan MI Date: Jun 2017 Water is a precious natural resource; human survival and nearly all modes of economic production depends on water. The efficient use of water resources is a subject of major concern for water utilities around the world. Within the last years, ... Read more
Pseudocapacitive material for energy storage application: PEDOT and PEDOT:PSS

Author: Adekoya, Gholahan J ; Sadiku, RE ; Hamam, Y ; Ray, Suprakas S ; Mwakikunga, Bonex W ; Folorunso, O ; Adekoya, OC ; Lolu, OJ ; Biotidara, OF Date: Nov 2020 The total volume of solar energy reaching the earth in every second is equivalent to the total energy usage by the entire human race for three days. With this vast amount of clean energy freely available to humanity, there is still heavy ... Read more
Range based power control for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Aug 2009 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in Wireless Mesh Networks (WMNs). In this paper, researchers present a range based dynamic power control for MRMC WMNs. First, WMN is represented as a set of disjoint ... Read more
Scalable power selection method for wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Hamam, Y ; Ntlatlapa, Ntsibane S Date: 2009 This paper addresses the problem of a scalable dynamic power control (SDPC) for wireless mesh networks (WMNs) based on IEEE 802.11 standards. An SDPC model that accounts for architectural complexities witnessed in multiple radios and hops ... Read more
A spreadsheet tool for the analysis of flows in small-scale water piping networks

Author: Adedeji, KB ; Hamam, Y ; Abe, BT ; Abu-Mahfouz, Adnan MI Date: Jul 2017 The analysis of water piping system has been presented by several authors in the past and in recent years proposing several solution algorithms. Among the notable methods are the Hardy cross method, linear approximation method, Newton Raphson ... Read more
State estimation in water distribution network: A review

Author: Tshehla, KS ; Hamam, Y ; Abu-Mahfouz, Adnan MI Date: Nov 2017 Monitoring of a Water Distribution Network (WDN) requires information about the present state of the network. Since all variables are usually not measurable directly, State estimation is employed. State estimation is a process of determining ... Read more

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