VeranstaltungsortB02.1.59Veranstalter Fakultät für Technische WissenschaftenBeschreibungCovariance matrices are central to many adaptive filtering and optimisation problems. In practice, they have to be estimated from a finite number of samples; on this, I will review some known results from spectrum estimation and multiple-input multiple-output communications systems, and how properties that are assumed to be inherent in covariance and power spectral densities can easily be lost in the estimation process. I will discuss new results on space-time covariance estimation, and how the estimation from finite sample sets will impact on factorisations such as the eigenvalue decomposition, which is often key to solving the introductory optimisation problems. The purpose of the presentation is to give you some insight into estimating statistics as well as to provide a glimpse on classical signal processing challenges such as the separation of sources from a mixture of signals.Vortragende(r)Dr. Stephan Alexander WeissKontaktKerstin Smounig (Kerstin.Smounig@aau.at)

VeranstaltungsortN.1.44Veranstalter Institut für Anglistik und AmerikanistikBeschreibungA lecture and poetry recitation by American/Canadian poet James Arthur, who will speak in practical terms about how and why poets use figurative language. In particular Arthur will describe how poets use metaphor to make an appeal to the reader’s sympathetic imagination, and how metaphor invites readers to not only interpret a poem, but to actually participate in the collaborative creation of the poem’s meaning. Implicit in this line of discussion is the question of how to understand a poem, and also the question of what poetry is for. Throughout his talk Arthur will draw examples from other poets’ work and will also reflect upon the role of metaphor in his own artistic practice, explaining how a poem’s range of implication evolves during the process of composition, often in directions that the poet has not foreseen. Following his lecture on metaphor, Arthur will recite poems from his two collections, Charms Against Lightning (Copper Canyon Press 2012) and The Suicide’s Son (Véhicule Press 2019). Reading to be followed by Q&A.Vortragende(r)James ArthurKontaktAlexander Onysko / Werner Delanoy / Carina Rasse (alexander.onysko@aau.at)