Wayne S. Goodridge

Work place: Department of Computing and Information Technology, The University of the West Indies, Trinidad and Tobago, W.I

E-mail: wayne.goodridge@sta.uwi.edu


Research Interests: Computer systems and computational processes, Computer Architecture and Organization, Computer Networks, Data Structures and Algorithms, Information-Theoretic Security


Wayne Goodridge is a Lecturer in the Department of Computing and Information Technology, The University of the West Indies, St. Augustine. He did his PhD at Dalhousie University and his research interest includes computer communications and security.

Author Articles
Sensitivity Analysis Using Simple Additive Weighting Method

By Wayne S. Goodridge

DOI: https://doi.org/10.5815/ijisa.2016.05.04, Pub. Date: 8 May 2016

The output of a multiple criteria decision method often has to be analyzed using some sensitivity analysis technique. The SAW MCDM method is commonly used in management sciences and there is a critical need for a robust approach to sensitivity analysis in the context that uncertain data is often present in decision models. Most of the sensitivity analysis techniques for the SAW method involve Monte Carlo simulation methods on the initial data. These methods are computationally intensive and often require complex software. In this paper, the SAW method is extended to include an objective function which makes it easy to analyze the influence of specific changes in certain criteria values thus making easy to perform sensitivity analysis.

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Energy Aware Ad Hoc On-Demand Multipath Distance Vector Routing

By Koffka Khan Wayne S. Goodridge

DOI: https://doi.org/10.5815/ijisa.2015.07.07, Pub. Date: 8 Jun. 2015

The current disjoint path Ad hoc On-Demand Multi-path Distance Vector (AOMDV) routing protocol does not have any energy-awareness guarantees. When AOMDV is used in wireless sensor networks (WSNs) energy is an important consideration. To enhance the AOMDV protocol an extra energy metric is added along with the hop count metric. This Energy aware or EA-AOMDV improves path selection using a trade-off between energy and hop count, thus giving more longevity to WSNs. EA-AOMDV is compared to the current AOMDV routing protocol to prove its worth in the context of WSNs. It is found that EA-AOMDV leads to better WSN energy-awareness in resource constrained WSNs.

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Fault Tolerant Multi-Criteria Multi-Path Routing in Wireless Sensor Networks

By Koffka Khan Wayne S. Goodridge

DOI: https://doi.org/10.5815/ijisa.2015.06.06, Pub. Date: 8 May 2015

The Ad Hoc On-Demand Multi-Path Distance Vector (AOMDV) routing protocol allows the transport of data along one or more paths in wireless sensor networks (WSNs). The path chosen is based on a single shortest path hop count metric. The data on some WSNs is mission critical, for example, military and health care applications. Hence, fault tolerance in WSNs is becoming increasingly important. To improve the fault tolerance of WSNs in lossy environments, this work adds to the AOMDV routing protocol as it incorporates an additional packet loss metric. This Multi-criteria AOMDV or M-AOMDV is evaluated using the ns2 simulator. Simulations show that M-AOMDV maintains relatively low packet loss rates when the WSN is experiencing loss.

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Impact of Multipath Routing on WSN Security Attacks

By Koffka Khan Wayne S. Goodridge

DOI: https://doi.org/10.5815/ijisa.2014.06.08, Pub. Date: 8 May 2014

Multipath routing does not minimize the consequences of security attacks. Due to this many WSNs are still in danger of most security attacks even when multipath routing is used. In critical situations, for example, in military and health applications this may lead to undesired, harmful and disastrous effects. These applications need to get their data communicated efficiently and in a secure manner. In this paper, we show the results of a series of security attacks on a multipath extension to the ad hoc on-demand distance vector AODV protocol, AOMDV. It is proved that many security parameters are negatively affected by security attacks on AOMDV, which is contradictory to research claims. This means that alternative refinements have to be made to present multipath routing protocols in order to make them more effective against network security attacks.

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