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Observation of Magnetic Proximity Effect Using Resonant Optical Spectroscopy of an Electrically Tunable MoSe2/CrBr3 Heterostructure
(2020)arXivVan der Waals heterostructures combining two-dimensional magnetic and semiconducting layers constitute a promising platform for interfacing magnetism, electronics, and optics. Here, we use resonant optical reflection spectroscopy to the observe magnetic proximity effect in a gate-tunable MoSe2/CrBr3 heterostructure. High quality of the interface leads to a giant zero-field splitting of the K and K' valley excitons in MoSe2, equivalent to ...Working Paper -
Dynamic Factor Trees and Forests – A Theory-led Machine Learning Framework for Non-Linear and State-Dependent Short-Term U.S. GDP Growth Predictions
(2020)Machine Learning models are often considered to be “black boxes” that provide only little room for the incorporation of theory (cf. e.g. Mukherjee, 2017; Veltri, 2017). This article proposes so-called Dynamic Factor Trees (DFT) and Dynamic Factor Forests (DFF) for macroeconomic forecasting, which synthesize the recent machine learning, dynamic factor model and business cycle literature within a unified statistical machine learning framework ...Working Paper -
Warum gibt es keine namhafte Schweizer IT-Industrie?
(2020)In den 1950er Jahren hatte die ETH Zürich einen gemieteten mechanischen Relaisrechner (Zuse Z4) und einen selbst gebauten elektronischen Röhrenrechner (Ermeth). Zudem veröffentlichte sie eine wegweisende Schrift zum Computerbau, eine Habilitationsschrift zur automatischen Programmierung und war massgeblich an der Entwicklung der Programmiersprache Algol beteiligt. Trotzdem gelang es damals (und auch später) nicht, eine namhafte Schweizer ...Working Paper -
Can current experimental data exclude non-Gaussian genuine band shapes in ultraviolet photoelectron spectra of the hydrated electron?
(2020)Two recent articles present results that allegedly exclude a possible multimodal distribution of the hydrated electron in ultraviolet photoelectron spectra. The first article bases its conclusion on the assumption that the non-Gaussian genuine band shape previously retrieved for the solvated electron in liquid water is an artefact arising from insufficient electron scattering cross sections used in the retrieval. The second article excludes ...Working Paper -
Comment on: Is the Hydrated Electron Vertical Detachment Genuinely Bimodal? J. Phys. Chem. Lett. 2019, 10, 4910-4913
(2020)In a recent article, David Bartels addresses the issue of the band shape of the genuine binding energy spectrum of the hydrated electron. He essentially claims that the genuine binding energy of the hydrated electron must be Gaussian in shape independent of the photon energy used for ionization, contrary to what was found in our previous work for excitations energies in the UV (3.6-5.8 eV photon energy). Further, he alleges that the ...Working Paper -
HD 117214 debris disk: scattered light images and constraints on the presence of planets
(2020)arXivWorking Paper -
Die künstliche Intelligenz begann 1912 mit dem Schachautomaten von Torres Quevedo
(2020)Als Wiege des Forschungsgebiets künstliche Intelligenz gilt allgemein eine Tagung, die 1956 im Dartmouth College, Hanover NH, stattfand. Allerdings haben sich Alan Turing und Konrad Zuse schon in den 1940er Jahren mit diesem Thema befasst. Der spanische Ingenieur Leonardo Torres Quevedo baute bereits 1912 einen voll funktionsfähigen Schachautomaten, der bis heute erhalten ist. Norbert Wiener spielte 1951 in Paris auf der ersten bedeutenden ...Working Paper -
An On-the-Fly Feature Map Compression Engine for Background Memory Access Cost Reduction in DNN Inference
(2020)Specialized hardware architectures and dedicated accelerators allow the application of Deep Learning directly within sensing nodes. With compute resources highly optimized for energy efficiency, a large part of the power consumption of such devices is caused by transfers of intermediate feature maps to and from large memories. Moreover, a significant share of the silicon area is dedicated to these memories to avoid highly expensive off-chip ...Working Paper -
Gottfried Semper’s Perplexity Before the Crystal Palace: Stoffwechsel as Osmosis between Decorative Objects and Architecture
(2020)FacesThis paper examines how Gottfried Semper’s approach triggered the shift from an understanding of ornament as artefact to an experimental model. In parallel, it reveals the implications of such a reorienta- tion of the concept of ornament for both design and architecture. Pivotal for this shift was Semper’s “On the Formal Principles of Adornment and its Meaning as a Symbol in Art” (1856), which marks, firstly, a relocation of the quest for ...Working Paper -