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Name
Preprints.org
Type
Publication Repository
Items
2320 Publications
Compatibility
OpenAIRE Basic (DRIVER OA)
OAI-PMH
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  • Numerical Analysis of Unsymmetric Flatbak Trailing Edge Airfoil to Reduce Turbomachinery Noise in Power Generation Cycle

    Lee, Soogab; Baik, Young-Jin; Lee, Gilbong; Kim, Soo-Hyun; Shin, Hyungki; Kim, Hogeon; Kim, Taehyung
    A turbomachinery is essential part in the power generation cycle. But, it is main noise source to annoy workers and users and to make environmental problem. Thus it is important to reduce this noise for operating the power generation cycle. This noise is created by flow instability on rotor blade trailing edge. An airfoil that becomes a section of a rotor blade of a rotating machine is manufactured as a blunt trailing edge (TE) with a round or flatback shape rather than the ideal sharp TE sha...

    Quantum Correlations and Bell Inequality Violation under Decoherence

    Erol, Volkan
    Quantum Correlations are studied extensively in quantum information domain. Entanglement Measures and Quantum Discord are good examples of these actively studied correlations. Detection of violation in Bell inequalities is also a widely active area in quantum information theory world. In this work, we revisit the problem of analyzing the behavior of quantum correlations and violation of Bell inequalities in noisy channels. We extend the problem defined in [1] by observing the changes in negat...

    Bringing Depth Data Alive: Conceive Human Intention through Web Visualisations of Head Pose and Emotion Changes †

    Stergiou, Alexandros; Kalliatakis, Grigorios; Vidakis, Nikolaos
    Affective computing in general and human activity and intention analysis in particular, is a rapidly growing field of research. Head pose and emotion changes, present serious challenges when applied to player’s training and ludology experience in serious games or analysis of customer satisfaction regarding broadcast and web services or monitoring a driver’s attention. Given the increasing prominence and utility of depth sensors, it is now feasible to perform large-scale collection of three-di...

    Allocation of Tutors and Study Centers in Distance Learning Using Geospatial Technologies

    Gillani, Syeda; Awan, Arshad; Khan, Shahid; Tahir, Ali; Nisa, Zaib; Mir, Kamran
    Allama Iqbal Open University (AIOU) is the largest distance learning institute of Pakistan and providing education to 1.4 million students. This is fairly a large setup across the country where students are geographically distributed. Currently the system works on a manual approach which is not efficient. Allocation of tutors and study centers to students plays a key role in distance learning for a better learning environment. Assigning tutors and study centers to distance learning students i...

    10a,11,11-Trimethyl-10a,11-dihydro-8<em>H</em>-benzo[<em>e</em>]imidazo[1,2-<em>a</em>]indol-9(10<em>H</em>)-one

    Ščerbetkaitė, Elena; Bieliauskas, Aurimas; Šačkus, Algirdas; Tamulienė, Rasa
    The alkylation of 1,1,2-trimethyl-1H-benzo[e]indole with 2-chloroacetamide, followed by work-up of the reaction mixture with a base and the subsequent treatment of a crude product with acetic acid gives 10a,11,11-trimethyl-10a,11-dihydro-8H-benzo[e]imidazo[1,2-a]indol-9(10H)-one. The structure assignments were based on data from 1H, 13C and 15N NMR spectroscopy. The optical properties of the obtained compound were studied by UV-vis and fluorescence spectroscopy.
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