728 research outputs found

    Fermionic Superfluid from a Bilayer Band Insulator in an Optical Lattice

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    We propose a model to realize a fermionic superfluid state in an optical lattice circumventing the cooling problem. Our proposal exploits the idea of tuning the interaction in a characteristically low entropy state, a band-insulator in an optical bilayer system, to obtain a superfluid. By performing a detailed analysis of the model including fluctuations and augmented by a variational quantum Monte Carlo calculations of the ground state, we show that the superfluid state obtained has high transition temperature of the order of the hopping energy. Our system is designed to suppress other competing orders such as a charge density wave. We suggest a laboratory realization of this model via an orthogonally shaken optical lattice bilayer.Comment: 5 pages, 7 figures, typos fixed, figures modifie

    VOICE RECOGNITION SYSTEM: SPEECH-TO-TEXT

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    VOICE RECOGNITION SYSTEM:SPEECH-TO-TEXT is a software that lets the user control computer functions and dictates text by voice. The system consists of two  components , first component is  for processing acoustic signal which is captured by a microphone and second component is to interpret the processed signal, then  mapping of the signal to words. Model for each letter will be built using Hidden Markov Model(HMM). Feature extraction will be done using Mel Frequency Cepstral Coefficients(MFCC). Feature training of the dataset will be done using vector quantization and Feature testing of the dataset will be done using viterbi algorithm. Home automation will be completely based on voice recognition system

    No-Sense: Sense with Dormant Sensors

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    Wireless sensor networks (WSNs) have enabled continuous monitoring of an area of interest (body, room, region, etc.) while eliminating expensive wired infrastructure. Typically in such applications, wireless sensor nodes report the sensed values to a sink node, where the information is required for the end-user. WSNs also provide the flexibility to the end-user for choosing several parameters for the monitoring application. For example, placement of sensors, frequency of sensing and transmission of those sensed data. Over the years, the advancement in embedded technology has led to increased processing power and memory capacity of these battery powered devices. However, batteries can only supply limited energy, thus limiting the lifetime of the network. In order to prolong the lifetime of the deployment, various efforts have been made to improve the battery technologies and also reduce the energy consumption of the sensor node at various layers in the networking stack. Of all the operations in the network stack, wireless data transmission and reception have found to consume most of the energy. Hence many proposals found in the literature target reducing them through intelligent schemes like power control, reducing retransmissions, etc. In this article we propose a new framework called Virtual Sensing Framework (VSF), which aims to sufficiently satisfy application requirements while conserving energy at the sensor nodes.Comment: Accepted for publication in IEEE Twentieth National Conference on Communications (NCC-2014

    ARE YOU SUBMITTING YOUR RESEARCH ARTICLE TO A JOURNAL? THINK BEFORE SUBMITTING

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    Nowadays vast number of new journals emerging globally in each week. Most of the authors are confused while publishing their research articles due to various guidelines by governing bodies of respective nations. It became a challenging task to authors to find the suitable journal to publish the articles. In current scenario, authors need to update knowledge themselves while considering the journal before submitting

    ARE YOU SUBMITTING YOUR RESEARCH ARTICLE TO A JOURNAL? THINK BEFORE SUBMITTING

    Get PDF
    Nowadays vast number of new journals emerging globally in each week. Most of the authors are confused while publishing their research articles due to various guidelines by governing bodies of respective nations. It became a challenging task to authors to find the suitable journal to publish the articles. In current scenario, authors need to update knowledge themselves while considering the journal before submitting

    Recent Trends and Techniques in Text Detection and Text Localization in a Natural Scene: A Survey

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    Text information extraction from natural scene images is a rising area of research. Since text in natural scene images generally carries valuable details, detecting and recognizing scene text has been deemed essential for a variety of advanced computer vision applications. There has been a lot of effort put into extracting text regions from scene text images in an effective and reliable manner. As most text recognition applications have high demand of robust algorithms for detecting and localizing texts from a given scene text image, so the researchers mainly focus on the two important stages text detection and text localization. This paper provides a review of various techniques of text detection and text localization
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