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  1. Vertrauen und die Lösung von Umweltproblemen, Schweizer Umweltpanel 

    Gomm, Sarah; Quoß, Franziska; Linder, Jan; et al. (2024)
    Report
  2. Pilotstudie für ein Monitoring der genetischen Vielfalt in der Schweiz 

    Fischer, Martin C.; Ryffel, Andrea; Ruprecht, Kathrin; et al. (2023)
    Einer der drei Bestandteile der Biodiversität ist, neben der Vielfalt der Arten und Lebensräume, die genetische Vielfalt. Die Biodiversität steht aufgrund anthropogener Ursachen unter zunehmendem Druck, weshalb der Aktionsplan Biodiversität Schweiz und die internationalen Biodiversitätskonvention (Convention on Biological Diversity, CBD) der Vereinten Nationen (UN) die Notwendigkeit eines Monitorings der genetischen Vielfalt in natürlichen ...
    Report
  3. Einstellungen und Präferenzen der Schweizer Bevölkerung im Bereich Lärm und Lärmbekämpfung 

    Gomm, Sarah; Quoss, Franziska; Maissen, Patricia; et al. (2024)
    Report
  4. Heutige und künftige Bedeutung des leichten Nutzfahrzeugverkehrs (Lieferfahrzeuge) 

    Ruesch, Martin; Lordieck, Jan; Schmid, Thomas; et al. (2023)
    Report
  5. Kennwerte der Verkehrserzeugung in Güterverkehr und Logistik 

    Ruesch, Martin; Todesco, Paolo; Lordieck, Jan; et al. (2023)
    Report
  6. Fraumünsterpost: Life Cycle Assessment and Indoor Hygrothermal Monitoring 

    Priore, Yasmine; Posani, Magda; Habert, Guillaume (2023)
    Report
  7. White Paper on Acceptance of Swiss Urban Densification. Public Acceptance and Policy for Green and Affordable Densification 

    Wicki, Michael; Wehr, Malte; Debrunner, Gabriela; et al. (2024)
    Switzerland’s urban and agglomeration settlements are facing multifaceted challenges of housing densification against the backdrop of limited land for development, high housing demand, rising rents, and a strong direct democratic political system. This white paper dissects the nuances of the Swiss housing dilemma by focusing on the perspectives and opinions of residents based on survey experiments from a panel study conducted in 2023. Our ...
    Report
  8. The Language of Hyperelastic Materials 

    Kissas, Georgios; Mishra, Siddhartha; Chatzi, Eleni; et al. (2024)
    SAM Research Report
    The automated discovery of constitutive laws forms an emerging area that focuses on automatically obtaining symbolic expressions describing the constitutive behavior of solid materials from experimental data. Existing symbolic/sparse regression methods rely on availability of libraries of material models, which are typically hand-designed by a human expert relying on known models as reference, or deploy generative algorithms with exponential ...
    Report
  9. Efficient Computation of Large-Scale Statistical Solutions to Incompressible Fluid Flows 

    Rohner, Tobias; Mishra, Siddhartha (2024)
    SAM Research Report
    This work presents the development, performance analysis and subsequent optimization of a GPU-based spectral hyperviscosity solver for turbulent flows described by the three dimensional incompressible Navier-Stokes equations. The method solves for the fluid velocity fields directly in Fourier space, eliminating the need to solve a large-scale linear system of equations in order to find the pressure field. Special focus is put on the ...
    Report
  10. Neural Networks for Singular Perturbations 

    Opschoor, Joost A.A.; Schwab, Christoph; Xenophontos, Christos (2024)
    SAM Research Report
    We prove deep neural network (DNN for short) expressivity rate bounds for solution sets of a model class of singularly perturbed, elliptic two-point boundary value problems, in Sobolev norms, on the bounded interval (−1,1). We assume that the given source term and reaction coefficient are analytic in [−1,1]. We establish expression rate bounds in Sobolev norms in terms of the NN size which are uniform with respect to the singular perturbation ...
    Report
  11. Numerical analysis of physics-informed neural networks and related models in physics-informed machine learning 

    De Ryck, Tim; Mishra, Siddhartha (2024)
    SAM Research Report
    Physics-informed neural networks (PINNs) and their variants have been very popular in recent years as algorithms for the numerical simulation of both forward and inverse problems for partial differential equations. This article aims to provide a comprehensive review of currently available results on the numerical analysis of PINNs and related models that constitute the backbone of physics-informed machine learning. We provide a unified ...
    Report
  12. Exponentially localised interface eigenmodes in finite chains of resonators 

    Ammari, Habib; Barandun, Silvio; Davies, Bryn; et al. (2024)
    SAM Research Report
    This paper studies wave localisation in chains of finitely many resonators. There is an extensive theory predicting the existence of localised modes induced by defects in infinitely periodic systems. This work extends these principles to finite-sized systems. We consider finite systems of subwavelength resonators arranged in dimers that have a geometric defect in the structure. This is a classical wave analogue of the Su-Schrieffer-Heeger ...
    Report
  13. Spectra and pseudo-spectra of tridiagonal k-Toeplitz matrices and the topological origin of the non-Hermitian skin effect 

    Ammari, Habib; Barandun, Silvio; De Bruijn, Yannick; et al. (2024)
    SAM Research Report
    We establish new results on the spectra and pseudo-spectra of tridiagonal k-Toeplitz operators and matrices. In particular, we prove the connection between the winding number of the eigenvalues of the symbol function and the exponential decay of the associated eigenvectors (or pseudo-eigenvectors). Our results elucidate the topological origin of the non-Hermitian skin effect in general one-dimensional polymer systems of subwavelength ...
    Report
  14. Scattering from time-modulated subwavelength resonators 

    Ammari, Habib; Cao, Jinghao; Hiltunen, Erik Orvehed; et al. (2024)
    SAM Research Report
    We consider wave scattering from a system of highly contrasting resonators with time-modulated material parameters. In this setting, the wave equation reduces to a system of coupled Helmholtz equations that models the scattering problem. We consider the one-dimensional setting. In order to understand the energy of the system, we prove a novel higher-order discrete, capacitance matrix approximation of the subwavelength resonant quasifrequencies. ...
    Report
  15. Bericht zur Akzeptanz der Verdichtung in der Schweiz Öffentliche Akzeptanz und Politik für eine grüne und bezahlbare Innenverdichtung 

    Wicki, Michael; Wehr, Malte; Debrunner, Gabriela; et al. (2024)
    Die Stadt- und Agglomerationsgemeinden der Schweiz sind mit vielfältigen Herausforderungen konfrontiert, wie Innenverdichtung zur Schaffung von neuem Wohnraum beitragen kann. Zu diesen Herausforderungen gehören begrenztes Bauland, hohe Wohnungsnachfrage, steigenden Mieten und ein direktdemokratisches politisches System. In diesem Bericht analysieren wir die Perspektiven und Meinungen der Einwohnerinnen und Einwohner zu dieser Herausforderung ...
    Report
  16. Studie zur Erhebung der Inflationserwartungen in der Umfrage der Schweizer Konsumentenstimmung 

    Abberger, Klaus; Mühlebach, Nina; Seiler, Pascal; et al. (2024)
    KOF Studies
    Report
  17. The Las Cristina Au-Cu deposit in the Venezuelan Guayana Shield: Geological, petrological and geochemical aspects 

    Eichenberger, Roland D.; Riedi, Martin J.; Ridley, John R.; et al. (1998)
    This report summarises results of 'Diplom' thesis research projects by R. D. Eichenberger and M. J. Riedi over the period 1996 - 1998 at ETH, Zürich, Switzerland, on the geology of the Las Cristinas deposit in Venezuela. In these projects, core was logged from two sections each through Mesones-Sofia and Conductora-Cuatro Muertos, with emphasis on primary lithology, and the distribution and paragenesis of minerals. Ore and alteration ...
    Report
  18. Challenges for the Swiss Innovation System 

    Gersbach, Hans; Wörter, Martin (2024)
    KOF Studies
    The Swiss Innovation System is the most powerful instrument to achieve continuous improvements in material well-being for citizens in Switzerland, and for addressing challenges such as protection against cyberattacks or providing clean energy. Yet, the Swiss Innovation System and its successes are challenged in multiple ways today. The Swiss lead in innovation has declined and the share of firms performing R&D has decreased. Other major ...
    Report
  19. Swiss Panel Global Cooperation 2022a 

    Borofsky, Yael; Brugger, Fritz; Büttner, Nicolas; et al. (2022)
    Report
  20. Swiss Panel Global Cooperation 2022b 

    Borofsky, Yael; Brugger, Fritz; Büttner, Nicolas; et al. (2022)
    Report

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