Victor B. Lawrence

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In wireless sensor networks (WSNs), congestion occurs, for example, when nodes are densely distributed, and/or the application produces high flow rate near the sink due to the convergent nature of upstream traffic. Congestion may cause packet loss, which in turn lowers throughput and wastes energy. Therefore congestion in WSNs needs to be controlled for(More)
Trustworthy location information is important because it is a critical input to a wide variety of locationbased applications. However, the localization infrastructure is vulnerable to physical attacks and consequently the localization results are affected. In this paper, we focus on achieving robust wireless localization when attacks are present on access(More)
October–December 2000 3 Introduction As more low-cost and high-capacity communication between client and servers becomes available, the enterprises are becoming interested in implementing services that will help them streamline their processes, improve their applications, reduce their costs, and increase their revenue. At the same time, providing mere(More)
Electro-optic (EO) image sensors exhibit the properties of high resolution and low noise level at daytime, but they do not work in dark environments. Infrared (IR) image sensors exhibit poor resolution and cannot separate objects with similar temperature. Therefore, we propose a novel framework of IR image enhancement based on the information (e.g., edge)(More)
To meet the growing need for higher capacities, a new architecture for an all-optical Internet is proposed. Based on traffic statistics and number of available wavelengths in the WDM trunks at network nodes, wavelength allocation and assignment is performed. Distribution of wavelength allocation decisions is accomplished using signaling messages(More)