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Category Archive: NS2 PROJECT TITLES 2015

Unsupervised detection of malware in persistent web traffic

Persistent network communication can be found in many instances of malware. In this paper, we analyse the possibility of leveraging low variability of persistent malware communication for its detection. We propose a new method for capturing statistical fingerprints of connections and employ outlier detection to identify the malicious ones. Emphasis is put on using minimal information possible […]

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Digital Mobile Multimedia Broadcasting Systems

The discussion of mobile multimedia broadcasting technologies and service implementation in this chapter is limited to the broadcasting network based scheme can be received by portable or hand-held devices with a small screen. Similar to DTTB systems, digital mobile multimedia broadcasting systems are designed for high-data-throughput (to support multiple low-data-rate services) transmission through wireless channels (VHF/UHF bands […]

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Methodology to evaluate user experience in non-fully loaded wireless communication systems

Evaluating user experience in wireless communication systems is, especially for operators, an important issue and ongoing research topic. In contrast to most of the literature, where the main focus is on network capacity evaluations using full-buffer traffic assumptions, we focus on more realistic traffic models to evaluate impacts of different network deployment strategies. We define three different service classes […]

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Orchestrating Feedback for Hybrid Rateless Codes

In several scenarios, such as in training and education, it is frequently important to distribute large files to many clients, e.g., operating system boot images or raw data files. To carry out such distribution efficiently, we use wireless broadcast and Fountain Codes with low density random encoding to toleratenetwork packet losses. In particular, we use a […]

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A Circuit Model of Hysteresis and Creep

A circuit architecture that models hysteretic phenomena is proposed. The model is flexible enough to reproduce both rate-independent hysteresis and thermal relaxation effects (creep), commonly observed in many real-world physical systems such as piezoelectric actuators. By suitably tuning the nonlinear characteristics of the resistive elements of the network, the well-known log(t) time dependence of the creep […]

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An integrated method for implementing online fault detection in NoC-based MPSoCs

The continuing development of the silicon technology leads to systems with hundreds of processors interconnected by a network on chip (NoC-based MPSoCs). On one hand, the nanotechnology enables to develop such complex systems, but, on the other hand, the vulnerability to faults increases. The literature presents partial fault-tolerant approaches, targeting specific parts of the system, as high-level […]

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A Study of Differential Signaling: Stable and Accurate Mixed-Mode Conversion and Extraction of Differential S-Parameters

Low voltage differential signaling (LVDS) in high-speed digital systems is utilized to effectively reduce EMI and improve signal quality. Mixed-mode S-parameters are a more general way to characterize a differential network. Therefore, an accurate extraction of mixed-mode S-parameters from single-ended S- parameters is critical for Signal and Power Integrity co-simulation where SSN is generated mainly by […]

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An Effective Power Dispatch Control Strategy to Improve Generation Schedulability and Supply Reliability of a Wind Farm Using a Battery Energy Storage System

The uncertainty in the availability of wind generation and the lack of coincidence between wind generation and system peak demand make wind farms (WFs) to be nondispatchable energy resources and impose limits on the potential penetration of wind generation in the generation mix. Battery energy storage systems (BESSs) integrated with WFs can reduce the variability […]

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Folded Cavity-Backed Crossed-Slot Antenna

A folded, cavity-backed crossed-slot antenna is proposed for antenna miniaturization. The cavity dimensions of a conventional cavity-backed crossed-slot antenna are about a half-guided-wavelength along each side, which is unsuitable in many applications like a handheld device or body area network(BAN). To reduce the size of the cavity, a folded cavity is proposed in this letter. The […]

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Bayesian Nonparametric Adaptive Control Using Gaussian Processes

Most current model reference adaptive control (MRAC) methods rely on parametric adaptive elements, in which the number of parameters of the adaptive element are fixed a priori, often through expert judgment. An example of such an adaptive element is radial basis function networks (RBFNs), with RBF centers preallocated based on the expected operating domain. If the system […]

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