Cilt:62 Sayı:01 (2020)

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https://dspace.ankara.edu.tr/handle/20.500.12575/76532

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Browsing Cilt:62 Sayı:01 (2020) by Author "Fen Fakültesi"

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    A Study On The Search Potentıal of Doubly Charged Leptons At The Sppc Based Ep Colliders
    (Ankara Üniversitesi Fen Fakültesi, 2020-06-30) Ozansoy, Aysuhan; Albayrak, Oğuzhan; Fizik; Fen Fakültesi
    We consider the single production of doubly charged leptons which take part in the extended weak isospin models and have exotic electric charges such as at the SppC based electron-proton (ep) colliders. We introduce the effective lagrangians describing the doubly charged lepton gauge interactions with SM leptons. We calculate the decay widths and production cross sections as a function of doubly charged lepton mass. We deal with the process and plot the kinematical distributions for the final state electron both for the signal and corresponding background. We perform a cut-based analysis to obtain the mass limits and couplings of doubly charged leptons at the SppC based ep colliders with the center-of-mass energies of TeV and TeV.
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    An Artifact Reduction Method for Block-Based Video Coding
    (Ankara Üniversitesi Fen Fakültesi, 2020-06-30) Ilgın, Hakki Alparslan; Akbulut, Ahmet; Elektrik-Elektronik Mühendisliği; Fen Fakültesi
    Most of the image/video coding standards are based on discrete cosine transform which is a block-based coding scheme with a disadvantage of blocking effects at low bit rates. In this paper, we propose a hybrid method which consists of downsampling/upsampling, significance map coding and local cosine transform to reduce the disadvantage of lossy compression and is also compatible with current standards. Experimental results show that performance of the proposed method is better than the conventional approaches.