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Tag Archive: 2015 Ns2 Projects

Space-aided autonomous sensor system for hydrogeological disaster management

This paper describes a set of innovative, space-based Information Services for the support for the “early warning” of a disaster or critical event aiming at improving the “first response” effectiveness via anetwork of autonomous sensors.

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Soft Quorums: A High Availability Solution for Service Oriented Stream Systems

Large-scale information gathering becomes more and more common with the increasing popularity of smartphones, GPS, social networks, and sensor networks. Services based on this real-time data are the logical next step. Service Oriented Stream Systems (SOSS) have a focus on one-time ad hoc queries as op-posed to continuous queries. High availability is crucial in these services. However, […]

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Ergodic Capacity of Interference Coordinated HetNet with Full-Duplex Small Cells

Full-duplex small cells provide a promising solution for meeting the capacity requirements of future wireless networks. The main objective of this paper is to analyse the sum ergodic capacity of full-duplex small cells operating in heterogeneous environments. A theoretical framework is developed and closed-form approximations for sum ergodic capacity have been derived. In order to evaluate […]

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Pluggable Electro-Optical Circuit Board Interconnect Based on Embedded Graded-Index Planar Glass Waveguides

Widespread adoption of electro-optical circuit boards based on embedded glass waveguide technology would enable seamless optical connectivity from external fiber-optic networks to system embedded optical interconnect architectures. In this paper, we report on the fabrication of planar multimode waveguides within thin glass foils based on a two-step thermal ion exchange process. Novel lamination techniques were developed to […]

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Adaptive artificial bee colony based parameter selection for subpixel mapping multiagent system in remote-sensing imagery

Remote sensing has become an important source of land use/cover information at a range of spatial and temporal scales. The existence of mixed pixels is a major problem in remote-sensing image classification. Although the soft classification and spectral unmixing techniques can obtain an abundance of different classes in a pixel to solve the mixed pixel […]

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An Efficient I/O-Redirection-based Reconstruction Scheme for Erasure-Coded Storage Clusters

This paper addresses an I/O interference problem encountered in on-line reconstruction of erasure-coded storage clusters, where user I/Os compete with reconstruction I/Os for both disk and networkbandwidth. We propose a redirection scheme called ‘RAM-RS’ to minimize the I/O interference among user and reconstruction requests. RAM-RS redirects user read/writes targeted at failed nodes to an RS-coded RAM […]

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Dynamic TDD Support in Macrocell-Assisted Small Cell Architecture

Dynamic allocation of subframes to uplink (UL) or downlink (DL) in time division duplex (TDD), termed `Dynamic TDD,’ has been studied by the 3rd Generation Partnership Project (3GPP) since the Long Term Evolution (LTE) Release 11 timeframe. At the same time, 3GPP is also standardizing macrocell-assisted small cell heterogeneous architectures for inclusion in LTE Release […]

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Finding Top k Most Influential Spatial Facilities over Uncertain Objects

Due to a variety of reasons including data randomness and incompleteness, noise, privacy, etc., uncertainty is inherent in many important applications, such as location-based services (LBS), sensornetwork monitoring and radio-frequency identification (RFID). Recently, considerable research efforts have been devoted into the field of uncertainty-aware spatial query processing such that the uncertainty of the data can be […]

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Human body channel energy harvesting scheme with −22.5 dBm sensitivity 25.87% efficiency threshold-compensated rectifier

A novel human body channel (HBC) energy harvesting scheme for body sensor networks (BSNs) is proposed in this paper. Human body channel is utilized innovatively as energy transmission medium to reduce the transmission loss dramatically and eliminate influence of shadow effect. Further, a high sensitivity and efficiency rectifier is presented by introducing an effective threshold compensation circuit. […]

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Effective Real-Time Android Application Auditing

Mobile applications can access both sensitive personal data and the network, giving rise to threats of data leaks. App auditing is a fundamental program analysis task to reveal such leaks. Currently, static analysis is the de facto technique which exhaustively examines all data flows and pinpoints problematic ones. However, static analysis generates false alarms for being […]

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