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Tag Archive: Latest Ns2 Projects

Exploiting Intrinsic Variability of Filamentary Resistive Memory for Extreme Learning Machine Architectures

In this paper, we show for the first time how unavoidable device variability of emerging non-volatile resistive memory devices can be exploited to design efficient low-power, low-footprint Extreme Learning Machine (ELM) architectures. In particular we utilize the uncontrollable Off-state resistance (Roff/HRS) spreads, of nanoscale filamentary- resistive memory devices, to realize random input weights and random […]

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Computer Supported Collaborative Design: Technologies, Systems, and Applications

This chapter presents a literature review of R&D area, particularly computer supported collaborative design (CSCD) technologies, systems, and applications. Research challenges and opportunities on CSCD are also discussed and highlighted. The chapter provides an overview of the related research fields, including computer supported cooperative work (CSCW), concurrent engineering, and human computer interaction (HCI), which triggered […]

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Cyber-physical electrical energy systems: challenges and issues

Cyber-physical electrical energy systems (CPEES) combine computation, communication and control technologies with physical power system, and realize the efficient fusion of power, information and control. This paper summarizes and analyzes related critical scientific problems and technologies, which are needed to be addressed with the development of CPEES. Firstly, since the co-simulation is an effective method […]

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CodeAware: Sensor-Based Fine-Grained Monitoring and Management of Software Artifacts

Current continuous integration (CI) tools, although extensible, can be limiting in terms of flexibility. In particular, artifact analysis capabilities available through plug in mechanisms are both coarse-grained and centralized. To address this limitation, this paper introduces a new paradigm, Code Aware, for distributed and fine-grained artifact analysis. Code Aware is an ecosystem inspired by sensornetworks, […]

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Widely Tunable Amplified Feedback Laser with Beating-Frequency Covering 60-GHz Band

A monolithic integrated amplified feedback laser is experimentally demonstrated as a new solution to generate dual-mode lasing with a wide frequency tuning range covering the entire 60-GHz band. This laser consists of a complex-coupled distributed feedback laser (DFB) and an integrated feedback cavity formed by a phase section and an amplifier section. Different laser sections […]

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Underlay MIMO Cognitive Radio Downlink Scheduling with Multiple Primary Users and No CSI

In this work, we proposed user selection strategies for downlink of multiple input and multiple output (MIMO) cognitive radio (CR) network. Underlay CR secondary users (SUs) are selected by cognitive base station (CBS) to share subchannel with primary users (PUs). It is assumed that the cross interference channel from cognitive radio base station to PUs is […]

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Doppler shift estimation for HF channels based on TEC measurements

Communication over long distances in an HF channel is established through ionospheric propagation. Ionosphere continuously changes due to both the effect of the sun and also other causes such as geomagnetic storms and drift. Therefore, instantaneous knowledge of the state of ionosphere has an inevitable effect on the link quality. One of the important influences […]

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Beam-switchable phased array antennas for the near-field RFID applications

This paper presents a new RFID reader antenna design with its radiation beam switchable to track the tags in in the near-zone of array aperture. The antenna is realized by using microstrip antenna array with a beam-forming network based on Butler matrix. The radiation of array is focused in the near zone to avoid interferences resulted from […]

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A word prediction methodology for automatic sentence completion

Word prediction generally relies on n-grams occurrence statistics, which may have huge data storage requirements and does not take into account the general meaning of the text. We propose an alternative methodology, based on Latent Semantic Analysis, to address these issues. An asymmetric Word-Word frequency matrix is employed to achieve higher scalability with large training […]

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Thermal Rating of a Submerged Substation for Wave Power

The costs of offshore maintenance operations put high reliability-requirements on offshore equipment for ocean energy, especially on submerged ones. Thermal management is thus essential in the design of the prototypes of a marine substation, developed at Uppsala University, for grid interface of wave power parks. The cooling system itself should be efficient as well as […]

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