Browsing by Subject "Spatio temporal"

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    Geometric parametric instability of femtosecond pulses in graded-index multimode fiber
    (Optical Society of America, 2017) Teğin, Ugur; Ortaç, Bülend
    We numerically and experimentally study the spatio-temporal femtosecond pulse evolution in graded-index multimode fiber at normal dispersion regime. We report the first demonstration of geometric parametric instability sidebands generation with ultrashort pulses in the literature.
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    Scalable linkage across location enhanced services
    (CEUR-WS, 2017-08) Basık, Fuat
    In this work, we investigate methods for merging spatio-temporal usage and entity records across two location-enhanced services, even when the datasets are semantically different. To address both effectiveness and efficiency, we study this linkage problem in two parts: model and framework. First we discuss models, including κ-l diversity- a concept we developed to capture both spatial and temporal diversity aspects of the linkage, and probabilistic linkage. Second, we aim to develop a framework that brings efficient computation and parallelization support for both models of linkage.