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Tag Archive: IEEE Ns2 Projects

Wi-Fi Hotspot at Signalized Intersection: Cost-Effectiveness for Vehicular Internet Access

In this paper, we investigate the cost-effectiveness of Wi-Fi solution for vehicular Internet access. We define the cost-effectiveness as the cost saving by deploying and operating a low-cost Wi-Fi infrastructure instead of a costly benchmark cellular network. To characterize the service quality of Wi-Fi deployment, we also define the normalized service delay which is the service […]

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Unravelling the Impact of Temporal and Geographical Locality in Content Caching Systems

To assess the performance of caching systems, the definition of a proper process describing the content requests generated by users is required. Starting from the analysis of traces of YouTube video requests collected inside operational networks, we identify the characteristics of real traffic that need to be represented and those that instead can be safely neglected. […]

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Ambient Control: A mobile framework for dynamically remixing the Internet of Things

The number of networked smart devices available in everyday environments is rapidly increasing; however, many current devices adopt mutually incompatible networks, protocols, and application programming interfaces. As such, creating mobile applications that dynamically discover and integrate ambient functionality across multiple vertical markets remains challenging. In this paper, we introduce a novel middleware framework, called Ambient Control, which enables […]

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EM-SS model of high-speed generators in Microgrids

An Electromagnetic-State Space, EM-SS, modeling approach is presented and used for performance prediction of high-speed synchronous generators during out of phase operation in Microgrids. This mode of operation may result in stresses on the network or the failure of the high-speed generators. The modeling approach is suitable for Microgrids consisting of multiple high-speed generators feeding three phase […]

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Characterizing mobile user habits: The case for energy budgeting

In this paper, we collect and analyze data from 85 smartphone users over a 9 month period. Different from existing work, we study device usage patterns in concert with network performance in space and time. Our results uncover predictable mobility patterns, where users are moving between hubs (i.e., home or workplace) and transit locations. In hubs, users […]

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Teleoperation of mining equipment using Optical Wireless Communications

Penguin Automated Systems Inc. is presently evaluating the world’s first omnidirectional Optical Wireless Communications (OWC) network customized to teleoperate mobile equipment in surface, underground and underwater mining operations. Experimental results of novel technologies that made this possible are presented here: a mode programmable On-Off-Keying (OOK), Orthogonal Frequency Division Modulations (OFDM) Half-Duplex LED driver, and a single photodetector […]

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Analysis and Control of Bipolar LVDC Grid With DC Symmetrical Component Method

The dc symmetrical component method is introduced for the analysis and control of bipolar dc distribution systems under asymmetrical operation. This method is an extension of the classical symmetrical component theory in three-phase ac power systems. The asymmetrical voltage and current in the positive and negative poles are decomposed into symmetrical components in common and […]

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Modelling Virtual Radio Resource Management with traffic offloading support

This paper proposes a new model for the management of virtual radio resources with traffic offloading support. The model has two key components: the estimation of network capacity and the data rate allocation. In the first one, the probability description of Signal-to-Interference-plus-Noise Ratio is used to obtain cumulative and density functions for the total network throughput. The primary objective […]

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Ocean-bottom pressure and seismic signals at tsunamigenic earthquake

Offshore observations make it possible to detect tsunamis in advance prior to their arrivals at the shoreline. For this purpose, ocean bottom pressure gauges are widely used. However, in near- and intermediate fields, ocean bottom pressure records usually exhibit a complicated interference of signals related not only to gravitational wave (i.e., tsunami), but also to […]

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Risk Averse Scheduling by a PEV Aggregator Under Uncertainty

Research on electric power systems has considered the impact of foreseeable plug-in electric vehicle (PEV) penetration on its regulation, planning, and operation. Indeed, detailed treatment of PEV charging is necessary for efficient allocation of resources. It is envisaged that a coordinator of charging schedules, i.e., a PEV aggregator, could exercise some form of load control […]

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