Browsing by Subject "Site-specificity"

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    Ephemerality in contemporary art
    (1999) Göktan, Zeynep Zeren
    In this study an aspect of “ephemerality” in contemporaiy art is analyzed. In this respect, while Land Art and Installation art are underlined in relation to a variety of concepts, like site-specificity, process, and evanescence, the notions of fragility, penetrability, and process are highlighted through the works of artists who may be said to take ephemerality in connection to their identity. Then, after noting ephemerality as the main framework, these concepts are traced in relation to my works.
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    A specificity-preserving generative model for federated MRI translation
    (Springer Cham, 2022-10-07) Dalmaz, Onat; Mirza, Usama; Elmas, Gökberk; Özbey, Muzaffer; Dar, Salman U. H; Çukur, Tolga; Albarqouni, Shadi; Bakas, Spyridon; Bano, Sophia; Cardoso, M. Jorge; Khanal, Bishesh; Landman, Bennett; Li, Xiaoxiao
    MRI translation models learn a mapping from an acquired source contrast to an unavailable target contrast. Collaboration between institutes is essential to train translation models that can generalize across diverse datasets. That said, aggregating all imaging data and training a centralized model poses privacy problems. Recently, federated learning (FL) has emerged as a collaboration framework that enables decentralized training to avoid sharing of imaging data. However, FL-trained translation models can deteriorate by the inherent heterogeneity in the distribution of MRI data. To improve reliability against domain shifts, here we introduce a novel specificity-preserving FL method for MRI contrast translation. The proposed approach is based on an adversarial model that adaptively normalizes the feature maps across the generator based on site-specific latent variables. Comprehensive FL experiments were conducted on multi-site datasets to show the effectiveness of the proposed approach against prior federated methods in MRI contrast translation.