cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimizing Linear Correctors: A Tight Output Min-Entropy Bound and Selection Technique
Creators: name: Grujić, Miloš
name: Verbauwhede, Ingrid
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Post-processing of the raw bits produced by a true random number generator (TRNG) is always necessary when the entropy per bit is insufficient for security applications. In this paper, we derive a tight bound on the output min-entropy of the algorithmic post-processing module based on linear codes, known as linear correctors. Our bound is based on the codes' weight distributions, and we prove that it holds even for the real-world noise sources that produce independent but not identically distributed bits. Additionally, we present a method for identifying the optimal linear corrector for a given input min-entropy rate that maximizes the throughput of the post-processed bits while simultaneously achieving the needed security level. Our findings show that for an output min-entropy rate of $0.999$, the extraction efficiency of the linear correctors with the new bound can be up to $130.56\%$ higher when compared to the old bound, with an average improvement of $41.2\%$ over the entire input min-entropy range. On the other hand, the required min-entropy of the raw bits for the individual correctors can be reduced by up to $61.62\%$.
description: Final version after the review process. Accepted for publication in IEEE Transactions on Information Forensics and Security. Corrected typos
Synergising semi-analytical models and hydrodynamical simulations to interpret JWST data from the first billion years
Creators: name: Mauerhofer, Valentin
name: Dayal, Pratika
name: Haehnelt, Martin G.
name: Kimm, Taysun
name: Rosdahl, Joakim
name: Teyssier, Romain
Publisher: name: arXiv
Year: 2025
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The field of high redshift galaxy formation has been revolutionised by JWST, which is yielding unprecedented insights on galaxy assembly at early times. Our key aim is to study the physical mechanisms that can explain the unexpected abundance of bright galaxies at $z \geq 11$, as well as their metal enrichment and spectral properties. We also use recent data to determine the key sources of reionisation. To do so, we implement cold gas fractions and star formation efficiencies derived from the SPHINX20 high-resolution radiation-hydrodynamics simulation into DELPHI, a semi-analytic model that tracks the assembly of dark matter halos and their baryonic components from $z \sim 4.5-40$. In addition, we explore two different methodologies to boost galaxy luminosities at $z \geq 11$: a stellar initial mass function (IMF) that becomes increasingly top-heavy with decreasing metallicity and increasing redshift (eIMF model), and star formation efficiencies that increase with increasing redshift (eSFE model). Our key findings are: (i) both the eIMF and eSFE models can explain the abundance of bright galaxies at $z \geq 11$; (ii) dust attenuation plays an important role for the bright-end of the UV LF at $z \leq 11$; (iii) the mass-metallicity relation is in place as early as $z \sim 17$ in all models although its slope is model-dependent; (iv) within the spread of both models and observations, all of our models are in good agreement with current estimates of $β$ slopes at $z \sim 5-17$ and Balmer break strengths at $z \sim 6-10$; (v) in the eIMF model, galaxies at $z\geq12$ or with $\rm{M_{UV}}\geq-18$ show values of $ξ_{\rm{ion}} \sim 10^{25.55}~{\rm [Hz~erg^{-1}]}$, twice larger than in other models; (vi) star formation in galaxies below $10^{9}\rm{M_{\odot}}$ is the key driver of reionisation, providing the bulk ($\sim 85\%$) of ionising photons down to its midpoint at $z \sim 7$.
Quantized vortex dynamics of the complex Ginzburg-Landau equation on torus
Creators: name: Zhu, Yongxing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We derive rigorously the reduced dynamical laws for quantized vortex dynamics of the complex Ginzburg-Landau equation on torus when the core size of vortex $\varepsilon\to 0$. The reduced dynamical laws of the complex Ginzburg-Landau equation are governed by a mixed flow of gradient flow and Hamiltonian flow which are both driven by a renormalized energy on torus. Finally, some first integrals and analytic solutions of the reduced dynamical laws are discussed.
title: Das neue ORF-Gesetz - Beschneidung der Pressefreiheit des ORF im Internet oder viel Lärm um nichts?
Creators: name: Scheurer, Alexander
Year: 2012

description: Die Magisterarbeit setzt sich mit dem im Juni 2010 novellierten ORF-Gesetz (ORF-G) und den daraus resultierenden Einschränkungen auf die Online-Berichterstattung des öffentlich-rechtlichen Rundfunks auf ORF.AT und den dazugehörigen 9 regionalen Unterseiten (wie z.B. WIEN.ORF.AT) auseinander. Von zentralem Interesse sind die rechtlichen Gründe für die Novellierung des Gesetzes, als auch die Einflüsse der medienpolitischen Akteure wie Parteien und Medienunternehmen, die bei der Ausgestaltung des Gesetzes eine wesentliche Rolle gespielt haben. Zudem wird beschrieben welche Auswirkungen das neue ORF-G auf die Online-Überblicksberichterstattung des ORF hinsichtlich der neuen Einschränkungen in Theorie und Praxis hatte (und noch hat) und ob das neue ORF-G der Förderung des Wettbewerbs im Online-Bereich bei Nachrichtenportalen in Österreich, wie ursprünglich angedacht, dienlich war und ist. Den theoretischen Grundrahmen bildet die Prinzipal-Agent Problematik, die im Bereich der neuen politischen Ökonomie, bzw. der Institutionenökonomik anzusiedeln ist. Im vorliegenden Fall ist die theoretische Annahme, dass es zwischen Prinzipal (den Bürgern) und Agenten (politischen Parteien) zu einer asynchronen Informationsverteilung kommt. Da der ORF 2010 noch immer eine marktbeherrschende Stellung im Rundfunk- und Online-Markt einnimmt und die politischen Parteien nach wie vor einen erheblichen Einfluss auf den ORF ausüben, wird auf theoretischer Ebene davon ausgegangen, dass die politischen Parteien bei der Ausgestaltung eines neuen ORF-G im Sinne ihrer eigenen Machterhaltung darauf achten, dass der öffentlich-rechtliche Rundfunk seine dominierende Position im Medienmarkt beibehält. Die Ergebnisse der vorgenommenen Einzelfallanalyse bekräftigen diese Annahme. Eine Sekundärdatenerhebung, nämlich die durch die Österreichische Web Analyse (ÖWA) ermittelten Zugriffszahlen vor und nach in Kraft treten des ORF-G, zeigen, dass sich die Marktsituation nicht nachteilig für ORF.AT verändert hat. Ein Experteninterview mit der Redaktionsleiterin von WIEN.ORF.AT, Mag. Eva Reiter, zeigt überdies, dass die redaktionelle Arbeitsweise bei WIEN.ORF.AT aufgrund des neuen ORF-G nicht wesentlich eingeschränkt worden ist. Es kann ebenso ausführlich dargestellt werden, dass sich die Regierungsparteien im Verlauf des Gesetzwerdungsprozesses u. a. verstärkt mit der Frage der zukünftigen Kontrolle des ORF und der dadurch möglichen parteipolitischen Einflussnahme beschäftigt haben. Beispielhaft dafür sind, dass Struktur und Bestellmodus der ORFGremien, trotz aller Kritik, u. a. auch von Seiten der ORF Journalisten, unverändert und die Kompetenzen der Medienbehörde bescheiden geblieben sind. Dabei sind essentielle Fragen bezüglich der Definition des Online-Auftrages und der Beschränkungen der Überblicksberichterstattung nicht von der Politik selbst gelöst, sondern an den ORF und an den Verband der österreichischen Zeitungsherausgeber (VÖZ) weitergereicht worden.
title: Zur Tauglichkeit von Gold-Sternlicht
Creators: name: Schmutzer, Lukas
Year: 2012

description: Friedrich Nietzsche wurde als Analytiker des Nihilismus, als Verkünder von Gottes Tod oder als Theoretiker des Willens zur Macht rezipiert. Dies prägt das Bild eines kompromisslosen Philosophen, der die Werte der abendländischen Kultur nicht nur hinterfragt, sondern sie darüber hinaus umwirft und hinter sich zurücklässt. Vermag aber die Härte, die Nietzsche all seinen Problemen entgegenbringt, auch neue Werte zu stiften? Seine Tugendethik kann in diesem Sinne nach ihrer Herkunft und ihren Zielsetzungen befragt werden. Nietzsche besinnt sich auf die antike Bedeutung des Tugendbegriffes, wenn er diesen nicht einer moralischen Vortrefflichkeit, sondern einer Tüchtigkeit verschreibt, die zum Sieg verhilft. In diesem Zusammenhang ist nicht nur zu erörtern, wie eine Tugend solche siegreichen Kräfte hervorbringen kann, sondern auch, wie eine solche Tugend selbst gebildet wird. Modell steht hierfür Pindars Ziehspruch „Werde, der du bist!“, der eine Tugend idealisiert und im selben Akt zu ihrer Verwirklichung auffordert. Zugleich wird darin im Lichte von Nietzsches Philosophie die Lehre einer ewigen Wiederkunft reflektiert, woraus Nietzsche in seiner letzten Schrift „Ecce homo“ radikale Konsequenzen zieht.
description: Friedrich Nietzsche is received as the analyst of nihilism, as the enunciator of God’s death or as the theorist of the will to power. All these conceptions have led to an image of a radical philosopher, who does not only question the values of occidental culture, but who also overthrows them. Nietzsche’s severity, however, might also generate new values beyond his destructive acts. In this respect, his virtue ethics can be analysed regarding their origins and goals. Nietzsche refers to the ancient meaning of virtue by considering this notion not as a moral excellence, but as a competence leading to victory. In this context, it is important to discuss how a virtue can generate such conquering forces as well as how a virtue itself can be developed. In reference to the latter, Pindar’s phrase „Become, who you are!“ serves as a model. It idealizes a virtue and requests to achieve it at the same time. In connection to the philosophy of Nietzsche, this phrase also reflects the teaching of the eternal return of the same. In his last work, „Ecce homo“, Nietzsche draws radical consequences in regard to this concept.
Computing equivariant matrices on homogeneous spaces for Geometric Deep Learning and Automorphic Lie Algebras
Creators: name: Knibbeler, Vincent
Publisher: name: arXiv
Year: 2023
Subjects: subject: Representation Theory (math.RT)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 53Z50 (Primary) 68T07, 16Z05, 43A85 (Secondary)

description: We develop an elementary method to compute spaces of equivariant maps from a homogeneous space $G/H$ of a Lie group $G$ to a module of this group. The Lie group is not required to be compact. More generally, we study spaces of invariant sections in homogeneous vector bundles, and take a special interest in the case where the fibres are algebras. These latter cases have a natural global algebra structure. We classify these automorphic algebras for the case where the homogeneous space has compact stabilisers. This work has applications in the theoretical development of geometric deep learning and also in the theory of automorphic Lie algebras.
description: In this second version, the title is modified and two appendices are added, following the peer-review process
title: Materialität des Körpers
Creators: name: Prielinger-Pokieser, Ulrike
Year: 2012

description: Diese Arbeit setzt sich aus feministischer und wissenschaftstheoretischer Sicht mit der Materialität des menschlichen Körpers und seiner Geschlechtlichkeit auseinander. Ziel der Arbeit ist es, ein Feld für alternative Denkfiguren zu öffnen, das den in der alltagsweltlichen Praxis vorherrschenden biologischen Deutungsmustern andere Möglichkeiten der Wahrnehmung bietet. Dies geschieht vor allem mithilfe von Judith Butlers genealogischer Analysen und Donna Haraways Wissenschaftskritik. Die Bezugnahme auf Butler und Haraway veranschaulicht, dass die tradierte Vorstellung vom Körper und das assoziierte biologische Geschlecht immer mit Konstruktionsprozessen verbunden sind. Butler analysiert die Naturhaftigkeit des Geschlechts-Körpers als diskursiven und performativ hervorgebrachten Machteffekt, stellt dessen Vorgängigkeit und Ahistorizität fruchtbar in Frage und zeigt, dass dem als axiomatisch aufgefassten geschlechtlichen Körper immer schon ein kultur-, sprach- und machtspezifisches Wahrnehmungsmuster vorausgeht. Haraways Arbeiten legen zudem dar, dass wissenschaftliche Aussagen den Anspruch auf Objektivität im Sinne einer unabhängigen Beschreibbarkeit nicht erfüllen, da die Wissensproduktion von gesellschaftlichen und subjektiven Herangehensweisen geprägt ist. In ihrem Konzept des situierten Wissens plädiert sie daher für eine Offenlegung genau dieser Partikularität und Körperlichkeit. Mit ihrer Neuinterpretation des Akteurstatus in der Wissensproduktion wird das traditionelle Subjekt-Objekt-Verhältnis aufgebrochen. Des Weiteren veranschaulicht Haraway anhand ihres Modells des Cyborgs, dass herkömmliche Grenzlinien zwischen Dichotomien wie Natur und Kultur nicht mehr weiter aufrechterhalten werden können. Judith Butler und Donna Haraway machen sichtbar, dass Körper keineswegs eindeutig und widerspruchsfrei erfassbar sind. Dies betrifft sowohl den Wissenschaftsbetrieb als auch den von diesen geprägten alltagsweltlichen Blick auf den Körper. Meine These ist, dass diese Uneindeutigkeiten und konkurrierenden Auffassungen vom Körper jedoch dazu beitragen können, diesen aus der Platzanweiserfunktion innerhalb der Gesellschaft zu befreien.
Orchis coriophora x O. laxiflora.

Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1979

description: Wissenschaftliche botanische Probe von Blütenteilen aus Margarition, Griechenland, datiert 16.5.1979.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 579056, eingereiht als 1979-56
description: ETH-Bibliothek
A Flexible Cryptographic Infrastructure for High-security SDR-based Systems
Creators: name: Hillmann, Peter
name: Stelte, Björn
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: E.3; C.3; H.4
subject: 94A60

description: Military software defined radio (SDR) systems are a major factor in future network-centric operations due to their flexibility and support for more capable radio communications systems. The inherent nature of software-based systems requires a more complex auxiliary infrastructure and multiple independent levels of security compared with typical systems: Secure booting of the SDR device, cryptographically signed software, real time operating platform software as well as radio applications. This technology raises new challenges with respect to the management. The largest impact on SDR deployments is due to the auxiliary cryptographic infrastructure for the security of the software life cycle and the cyclic update of the keys. Compared to conventional radio devices, the SDR system with the cryptographic infrastructure described in this paper reaches a higher security level and is more flexible. The advantage is the possibility to deploy trunked radio system and further waveforms, such as coalition wideband, which will be standardized in the future. Also it is possible to update cryptographic mechanisms. In this work, we analyze the requirements for a high secure SDR deployment and model the life cycle of the components of a deployed SDR node based on the Joint Program Executive Office (JPEO) Software Communication Architecture (SCA).
Out-of-phase Plasmon Excitations in the Trilayer Cuprate Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+δ}$
Creators: name: Nakata, S.
name: Bejas, M.
name: Okamoto, J.
name: Yamamoto, K.
name: Shiga, D.
name: Takahashi, R.
name: Huang, H. Y.
name: Kumigashira, H.
name: Wadati, H.
name: Miyawaki, J.
name: Ishida, S.
name: Eisaki, H.
name: Fujimori, A.
name: Greco, A.
name: Yamase, H.
name: Huang, D. J.
name: Suzuki, H.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Within a homologous series of cuprate superconductors, variations in the stacking of CuO$_2$ layers influence the collective charge dynamics through the long-range Coulomb interactions. We use O $K$-edge resonant inelastic x-ray scattering to reveal plasmon excitations in the optimally-doped trilayer Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+δ}$. The observed plasmon exhibits nearly $q_z$-independent dispersion and a large excitation gap of approximately 300 meV. This mode is primarily ascribed to the $ω_{-}$ mode, where the charge density on the outer CuO$_2$ sheets oscillates out of phase while the density in the inner sheet remains unaltered at $q_z=0$. The intensity of the acoustic $ω_3$ mode is relatively weak and becomes vanishingly small near $(q_x, q_y)=(0, 0)$. This result highlights a qualitative change in the eigenmode of the dominant low-energy plasmon with the number of CuO$_2$ layers.
Dactylorhiza lapponica.
Blütenanalyse, montiert auf Papier erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1984

description: Wissenschaftliche botanische Probe von Blütenteilen aus Norwegen: Oppland: Dovre: Nähe Nysäterkollen, datiert 23.7.1984.
In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 184125, eingereiht unter Dactylorhiza lapponica
description: ETH-Bibliothek
Serapias orientalis.
Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1977

description: Wissenschaftliche botanische Probe von Blütenteilen aus Kos, Griechenland, datiert 4.4.1977.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 57725, eingereiht als 1977-25
description: ETH-Bibliothek
Serapias orientalis.
Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1978

description: Wissenschaftliche botanische Probe von Blütenteilen aus Mistegna, Lesvos, Griechenland, datiert 4.4.1978.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 57828, eingereiht als 1978-28
description: ETH-Bibliothek
title: Hegels Aufhebung der Religion in der Philosophie
Creators: name: Schaller, Philipp
Year: 2012

description: Die in dieser Arbeit verfolgte Absicht liegt darin, im Rahmen einer Rekonstruktion der Einleitung in die Phänomenologie des Geistes nachzuvollziehen, welche Funktion Hegel zufolge der Religion in der dialektischen Entwicklung des Wissens zum Standpunkt der Wissenschaft zukommt. Ein wesentliches Interesse dieser Rekonstruktion besteht darin herauszuarbeiten, wie Hegel zeigt, dass religiöse Erfahrung und die damit einhergehende geschichtliche Bildung des Bewusstseins einen unverzichtbaren Teil in der Entstehung dessen ausmachen, was er unter >>philosophischer Wissenschaft<< versteht. Dabei sollen auch die bedeutenden Unterschiede deutlich werden zwischen der Art und Weise, wie das Verhältnis von Religion und Philosophie bzw. Wissenschaft bei Hegel gedacht wird und wie es sowohl bei Kant als einem weiteren Vertreter der Aufklärung, als auch in einem heute geläufigen Verständnis von Wissenschaft bzw. aufgeklärtem Denken erscheint. Im letzten Kapitel (7) kommt außerdem das Problem zur Sprache, ob Hegels Gedanke einer Aufhebung der Religion in die Philosophie, durch welche die Philosophie zur Nachfolgerin der Religion in der Erfüllung der unverzichtbaren Aufgabe werden soll, die höchsten und wichtigsten Fragen zu beantworten, die sich dem menschlichen Geist und Bewusstsein stellen, hält, was er verspricht.
description: The purpose of this work is to reconstruct the introducing passages of Hegel´s Phenomenology of the Spirit in order to understand which function religion fullfills according to Hegel within the dialectical development of knowledge - a process that points out consciousness as scientific. A specific aim of this reconstruction is to expose the way in which Hegel shows that religious experience and the corresponding historical education, consciousness goes through in that experience, has to be seen as an essential part of what Hegel calls >>philosophical science<<. By doing so, it will also impart an idea of the considerable differences in the way in which Hegel assumes the relation between religion on the one hand and science or rather philosophy and "pure" scientifical thinking on the other hand and how it is understood from another point of view, especially from Kant´s one – as another exponent of European Enlightenment – and that of a certain contemporary and common understanding of science. In the last chapter (c.7) the study also deals with the problem whether Hegel´s concept of a negation, conservation and eleveation of religion, which converts philosophy into its successor in the indispensable work of answering the most important questions that arises in human consciousness and mind, can keep its promise.
Exploring large language models for microstructure evolution in materials
Creators: name: Satpute, Prathamesh
name: Tiwari, Saurabh
name: Gupta, Maneet
name: Ghosh, Supriyo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: There is a significant potential for coding skills to transition fully to natural language in the future. In this context, large language models (LLMs) have shown impressive natural language processing abilities to generate sophisticated computer code for research tasks in various domains. We report the first study on the applicability of LLMs to perform computer experiments on microstructure pattern formation in model materials. In particular, we exploit LLM's ability to generate code for solving various types of phase-field-based partial differential equations (PDEs) that integrate additional physics to model material microstructures. The results indicate that LLMs have a remarkable capacity to generate multi-physics code and can effectively deal with materials microstructure problems up to a certain complexity. However, for complex multi-physics coupled PDEs for which a detailed understanding of the problem is required, LLMs fail to perform the task efficiently, since much more detailed instructions with many iterations of the same query are required to generate the desired output. Nonetheless, at their current stage of development and potential future advancements, LLMs offer a promising outlook for accelerating materials education and research by supporting beginners and experts in their physics-based methodology. We hope this paper will spur further interest to leverage LLMs as a supporting tool in the integrated computational materials engineering (ICME) approach to materials modeling and design.
Connecting shear-flow and vortex array instabilities in annular atomic superfluids
Creators: name: Hernandez-Rajkov, D.
name: Grani, N.
name: Scazza, F.
name: Del Pace, G.
name: Kwon, W. J.
name: Inguscio, M.
name: Xhani, K.
name: Fort, C.
name: Modugno, M.
name: Marino, F.
name: Roati, G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: At the interface between two fluid layers in relative motion, infinitesimal fluctuations can be exponentially amplified, inducing vorticity and the breakdown of the laminar flow. This process, known as the Kelvin-Helmholtz instability, is responsible for many familiar phenomena observed in the atmosphere and in the oceans, as well as in astrophysical objects, being known as one of the paradigmatic routes to turbulence in fluid mechanics. While shear-flow instabilities in classical fluids have been extensively observed in various contexts, controlled experiments in the presence of quantized circulation are comparatively very few. Here, we engineer two counter-rotating atomic superflows, a configuration that in classical inviscid fluids is unstable via the Kelvin-Helmholtz instability. We observe how the contact interface, i.e. the shear layer, develops into an ordered circular array of quantized vortices, which loses stability and rolls up into vortex clusters. We extract the instability growth rates and find that they obey the same scaling relations across different superfluid regimes, ranging from weakly-interacting bosonic to strongly-correlated fermionic pair condensates. The measured scalings, reproduced by numerical simulations and well described by a microscopic point-vortex model, are consistent with the classical hydrodynamic Kelvin-Helmholtz instability of a finite-width shear layer. Our results establish interesting connections between vortex arrays and shear-flow instabilities, suggesting a possible interpretation of the observed quantized vortex dynamics as a manifestation of the underlying unstable flow. Moreover, they open the way for exploring a wealth of out-of-equilibrium phenomena, from vortex-matter phase transitions to the spontaneous emergence and decay of two-dimensional quantum turbulence.
Hydro-mechanical earthquake cycles in a poro-visco-elasto-plastic fluid-bearing fault structure
Creators: name: Dal Zilio, Luca
name: Hegyi, Betti
name: Behr, Whitney
name: Gerya, Taras
Publisher: name: ETH Zurich
Year: 2022
Subjects: Rock-Fluid Interaction
Earthquake Cycles
Fault Mechanics
Poro-Visco-Elasto-Plastic Rheology
Finite Difference

description: A major goal in earthquake physics is to derive a constitutive framework for fault slip that captures the dependence of shear strength on fault rheology, sliding velocity, and pore-fluid pressure. In this study, we present H-MEC (Hydro-Mechanical Earthquake Cycles), a newly-developed two-phase flow numerical code - which couples solid rock deformation and pervasive fluid flow - to simulate how crustal stress and fluid pressure evolve during the earthquake cycle on a fluid-bearing fault structure. This unified, continuum-based model, incorporates a staggered finite difference-marker-in-cell (SFD-MIC) method and accounts for full inertial (wave mediated) effects and fluid flow in poro-visco-elasto-plastic compressible medium. Global Picard-iterations and an adaptive time stepping allows the correct resolution of both long- and short-time scales, ranging from years during slow tectonic loading to milliseconds during the propagation of dynamic ruptures. We present a comprehensive in-plane strike-slip setup in which we test analytical poroelastic benchmarks of pore-fluid pressure diffusion from an injection point along a finite fault width. We then investigate how pore-fluid pressure evolution and solid-fluid compressibility control sequences of seismic and aseismic slip on geologic faults. While the onset of fluid-driven shear cracks is controlled by localized collapse of pores and dynamic self-pressurization of fluids inside the undrained fault zone, subsequent dynamic ruptures are driven by solitary pulse-like fluid pressure waves propagating at seismic speed. Furthermore, shear strength weakening associated with rapid self-pressurization of pore-fluid can account for the slip-fracture energy scaling observed for large earthquakes.
description: arXiv
Dactylorhiza majalis.
Blütenanalyse, montiert auf Papier erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1980

description: Wissenschaftliche botanische Probe von Blütenteilen aus Italien: Bozen: Passo Campolongo, datiert 30.7.1980.
In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 180138, eingereiht unter Dactylorhiza majalis
description: ETH-Bibliothek
Bostrichidae LeConte 1861
Creators: name: Zahradník, Petr
name: Háva, Jiří
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Bostrichidae

description: ENDECATOMIDAE LeConte, 1861
= Hendecatomidae Kiesenwetter, 1877.
Endecatomus Mellié, 1847: 108. Type species Anobium reticulatus Herbst, 1793 (N, P). Dictyalotus Redtenbacher, 1847: 348. Type species Anobium reticulatus Herbst, 1793. Hendecatomus Bach, 1852: 100, 108. Type species Anobium reticulatus Herbst, 1793.
description: Published as part of Zahradník, Petr & Háva, Jiří, 2014, Catalogue of the world genera and subgenera of the superfamilies Derodontoidea and Bostrichoidea (Coleoptera: Derodontiformia, Bostrichiformia), pp. 301-352 in Zootaxa 3754 (4) on pages 318-319, DOI: 10.11646/zootaxa.3754.4.1, http://zenodo.org/record/224794
Orchis mascula.
Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1972

description: Wissenschaftliche botanische Probe von Blütenteilen aus Logis du Pin, Frankreich, datiert 13.5.1972.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 57258, eingereiht als 1972-58
description: ETH-Bibliothek
Remarks on Appearing and Appearance in Husserl
Creators: name: Hopkins, Burt C.
Publisher: name: Bollettino Filosofico
Year: 2018
Subjects: Appearance, Phenomenological Reflection, Phenomenological Manifold, Husserl, Phenomenological Evidence

description: A strand in the contemporary engagement with Husserl’s phenomenology is united by the critical judgment that the appearing of the appearance paradoxically does not appear in that phenomenology. I argue that it does. My argument has three parts. The first argues that, contra Heidegger, the appearance in Husserl doesn’t involve the “self-showing” of anything. The second argues that the appearance in Husserl is a phenomenon doubly purified, from 1) its index of existence and 2) its empirical facticity. The third argues that the appearing of the appearance appears in manifolds of lived-experiences that in turn appear in the only foundation that – from beginning to end – Husserl sought to establish for a philosophical science: the reflectively accessed unities of sense (Sinn) given in these manifolds that alone are capable of manifesting phenomenological evidence.
description: Bollettino Filosofico, Vol 33 (2018): Ripensare la fenomenologia, con e oltre
title: Personenzentrierte Psychotherapie im Zwangskontext - Möglichkeiten und Grenzen
Creators: name: Hofstadler, Joana
Year: 2012

description: Diese Diplomarbeit untersucht im Rahmen der personenzentrierten Psychotherapie die Grenzen und Möglichkeiten dieses Ansatzes im Zwangskontext. Im theoretischen Teil erfolgt eine Darstellung der allgemeinen psychotherapeutischen Vorgehensweise im Zwangskontext beziehungsweise der besonderen Anforderungen, die dieses spezielle Setting begleiten. Darüber hinaus werden die Grundlagen des personenzentrierten Ansatzes nach Rogers umrissen, die Umsetzung der personenzentrierten Beziehungsvariablen im Zwangskontext erörtert und die Vor- und Nachteile dieses Ansatzes dargelegt. Im zweiten Teil der Arbeit wird zunächst die methodische Vorgehensweise dargestellt und darauf aufbauend werden die Ergebnisse von acht ExpertInneninterviews erläutert. Das letzte Kapitel dieser Arbeit bildet eine Zusammenfassung der theoretisch und empirisch gewonnenen Erkenntnisse.
Plato is not Platonism: Musings on the Derivative De-eroticized Nature of the Modern Subject
Creators: name: Sena, Marylou
Publisher: name: Bollettino Filosofico
Year: 2018
Subjects: Heidegger, Plato, Soul, Logos, Sophrosyne

description: One of the enduring problems of phenomenology concerns the dispute over the nature of the modern subject (subjectivity) that is responsible for its own agnostic and atheistic views of the world. In an effort to understand the “obscurity” around the nature of the modern subject, Heidegger turns to Plato (1936-37) bearing in mind Nietzsche’s distinction between Plato and Modern Platonism. From the perspective of Plato’s eroticized conception of the logos, based as it is in the soul’s form of sophrosyne, Heidegger draws the following conclusion: the Kantian claim of Modern Platonism that the nonsensuous being of Plato’s Ideas and of the gods cannot in principle be known is based on a de-eroticized, derivative, conception of the logos. But Heidegger fails to see Plato’s own astonishing account of how this new logos of the “non-lover” is based in a derivative form of sophrosyne.
description: Bollettino Filosofico, Vol 33 (2018): Ripensare la fenomenologia, con e oltre
Orchis mascula.

Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1979

description: Wissenschaftliche botanische Probe von Blütenteilen aus Pentalofon, Griechenland, datiert 18.5.1979.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 579062, eingereiht als 1979-62
description: ETH-Bibliothek
Gottesman-Kitaev-Preskill state preparation using periodic driving
Creators: name: Kolesnikow, Xanda C.
name: Bomantara, Raditya Weda
name: Doherty, Andrew C.
name: Grimsmo, Arne L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Gottesman-Kitaev-Preskill (GKP) code may be used to overcome noise in continuous variable quantum systems. However, preparing GKP states remains experimentally challenging. We propose a method for preparing GKP states by engineering a time-periodic Hamiltonian whose Floquet states are GKP states. This Hamiltonian may be realized in a superconducting circuit comprising a SQUID shunted by a superinductor and a capacitor, with a characteristic impedance twice the resistance quantum. The GKP Floquet states can be prepared by adiabatically tuning the frequency of the external magnetic flux drive. We predict that highly squeezed $>11.9$ dB ($10.8$ dB) GKP magic states can be prepared on a microsecond timescale, given a quality factor of $10^6$ ($10^5$) and flux noise at typical rates.
description: Includes main text and supplementary material
Dactylorhiza traunsteineri, beschriftet mit: D. traunsteineri - Komplex.

Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1975

description: Wissenschaftliche botanische Probe von Blütenteilen aus Biberbrugg, Schweiz SZ, datiert 8.7.1975.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 57521, eingereiht als 1975-21
description: ETH-Bibliothek
EASYGO - Efficiency and Safety in Geothermal Operations-A new Innovative Training Network
Creators: name: Brehme, Maren
name: Saar, Martin O.
name: Slob, Evert
name: Bombarda, Paola
name: Maurer, Hansruedi
name: Wellmann, Florian
name: Vardon, Philip J.
name: Bruhn, David
name: Easygo Team
Publisher: name: ETH Zurich
Year: 2021

description: How to operate a geothermal system in the most efficient and safe manner? This is the most important and urgent question after a geothermal resource has been identified. The recently funded Innovative Training Network ‘EASYGO‘ will answer that question from different perspectives and give high-level training for early stage researchers (ESR; here PhD candidates) in geothermal operations.

Tackling the challenges of sustainable geothermal operations requires an interdisciplinary and intersectoral approach. To achieve the main objective, researchers will work on the whole chain of geothermal operations, from production to power-plant engineering to injection. They will develop novel monitoring concepts, perform real-time simulations, develop system components, assess novel concepts for operations and test operational parameters at the field scale. The major strength and originality of the programme is that it is developed around large-scale infrastructure. Researchers will have access to the infrastructure in all countries for testing equipment and doing real-time measurements.

EASYGO graduates will be a new generation of multidisciplinary experts in geothermal operations, trained to achieve standardised efficient and safe operations of geothermal systems to enable the ambitious international expansion plans. The mobility plan of EASYGO envisages each ESR to have at least one academic secondment and one industrial secondment.

EASYGO consists of an intersectoral team of experts from academic and non-academic institutions. All academic participants are members of the IDEA League, a strategic alliance of leading European universities of technology. The members of the IDEA League with a strong research profile in geothermal energy, TU Delft (The Netherlands), RWTH Aachen (Germany), ETH Zurich (Switzerland) and Politecnico di Milano (Italy), constitute the academic consortium of EASYGO. Additionally, ten industry partners from all countries drive the research from an applied point of view. Our ambition is to contribute to making Europe a world leader in geothermal science, operational technology and education, thereby accelerating the energy transition.
description: EGUsphere
Topological heavy fermions in magnetic field
Creators: name: Singh, Keshav
name: Chew, Aaron
name: Herzog-Arbeitman, Jonah
name: Bernevig, B. Andrei
name: Vafek, Oskar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recently introduced topological heavy fermion model (THFM) provides a means for interpreting the low-energy electronic degrees of freedom of the magic angle twisted bilayer graphene as hybridization amidst highly dispersing topological conduction and weakly dispersing localized heavy fermions. In order to understand the Landau quantization of the ensuing electronic spectrum, a generalization of THFM to include the magnetic field B is desired, but currently missing. Here we provide a systematic derivation of the THFM in B and solve the resulting model to obtain the interacting Hofstadter spectra for single particle charged excitations. While naive minimal substitution within THFM fails to correctly account for the total number of magnetic subbands within the narrow band i.e. its total Chern number, our method -- based on projecting the light and heavy fermions onto the irreducible representations of the magnetic translation group -- reproduces the correct total Chern number. Analytical results presented here offer an intuitive understanding of the nature of the (strongly interacting) Hofstadter bands.
description: 16+65 pages, 5+21 figures. The manuscript layout is restructured and the references are modified. The derivation of effective models is added to the supplementary notes
Inferring saline tracer transport characteristics from time-lapse GPR experiments
Creators: name: Giertzuch, Peter-Lasse
name: Shakas, Alexis
name: Brixel, Bernard
name: Doetsch, Joseph
name: Jalali, Reza
name: Maurer, Hansruedi
Publisher: name: ETH Zurich
Year: 2021

description: Monitoring and characterization of flow and transport processes in the subsurface has been a key focus of hydrogeological research for several decades. Such processes can be relevant for numerous applications, such as hydrocarbon and geothermal reservoir characterization and monitoring, risk assessment of soil contaminants, or nuclear waste disposal strategies.

Monitoring of flow and transport processes in the subsurface is often challenging, as they are usually not directly observable. Here, we present an approach to monitor saline tracer migration through a weakly fractured crystalline rock mass by means of Ground Penetrating Radar (GPR), and we evaluate the data quantitatively in terms of a flow velocity field and localized difference GPR breakthrough curves (DRBTC).

Two comparable and repeated tracer injection experiments were performed within saturated rock on the decameter scale. Time-lapse single-hole reflection data were acquired from two different boreholes during these experiments using unshielded and omnidirectional borehole antennas. The individual surveys were analyzed by difference imaging techniques, which allowed ultimately for tracer breakthrough monitoring at different locations in the subsurface. By combining the two complimentary GPR data sets, the 3D tracer velocity field could be reconstructed.

Our DRBTCs agree well with measured BTCs of the saline tracer at different electrical conductivity monitoring positions. Additionally, we were able to calculate a DRBTC for a location not previously monitored with borehole sensors. The reconstructed velocity field is in good agreement with previous studies on dye tracer data at the same research locations. Furthermore, we were able to resolve separate flow paths towards different monitoring locations, which could not be inferred from the electrical conductivity sensor data alone. The GPR data thus helped to disentangle the complex flow field through the fractured rock.

Out technique can be adapted to other use cases such as 3D monitoring of fluid migration (and thus permeability enhancement) during hydraulic stimulation and tracing fluid contaminants – e.g. for nuclear waste repository monitoring.
description: EGUsphere
Influence of Metacognition on Strategies for Self-Esteem Regulation in Western and Eastern Contexts
Creators: name: Shao, Ruocheng
Publisher: name: PsychArchives
Year: 2023
Subjects: subject: 150

description: Many studies have shown that individuals evaluate their self-esteem differently in different cultural backgrounds. In Western cultures, individuals tend to overestimate their self-esteem levels, while in contrast, individuals in Eastern cultures tend to underestimate their self-esteem levels. Consequently, they also demonstrate differences in the use of self-evaluation strategies. Westerners tend to use self-enhancement strategies, whereas Easterners tend to use self-protection strategies. However, the use of these strategies is also influenced by different metacognitive abilities.This study aims to investigate whether different metacognitive abilities are associated with self-evaluation strategies under the influence of Chinese and Western cultures.
Ultrasonic velocity experiments on ice cores to complement fabric measurements
Creators: name: Hellmann, Sebastian
name: Kerch, Johanna
name: Grab, Melchior
name: Löwe, Henning
name: Bauder, Andreas
name: Weikusat, Ilka
name: Maurer, Hansruedi
Publisher: name: ETH Zurich
Year: 2021

description: The ice crystal structure and in particular the crystal orientation fabrics (COF) provide valuable information about the deformation history of ice sheets and glaciers. Therefore, COF analysis has been among the standard measurement techniques for most deep ice core drilling projects in the last three decades. The analysis depends on carefully prepared thin sections of ice that are measured with cross-polarised light microscopy or electron backscattering and diffraction (EBSD). The preparation of thin sections is labour-intensive and therefore only a discrete number of samples along the ice core is usually analysed. Geophysical methods such as ultrasonic sounding along the ice core could be employed to complement the discrete fabric data by providing data to fill the gaps. A suitable method needs to be reasonably fast, ideally non-invasive and provides unambiguous information in combination with the established methods.

In our study, we demonstrate the feasibility of such ultrasonic experiments applied to an ice core to support the approved cross-polarised light microscopy method. Point-contact transducers transmitted ultrasonic waves into ice core samples from a temperate glacier. X-ray computer tomography measurements provide the required information to consider the effect of a two-phase medium (ice and air bubbles) in a porosity correction of the velocity. We determined the azimuthal variation of the seismic velocity. This variation is a result of seismic anisotropy due to the crystal orientation within the ice core volume. The measurements can be acquired within minutes and do not require an extensive preparation of ice samples.

In addition, the COF of adjacent ice core samples was measured with cross-polarised light spectroscopy. From this, we derived the elasticity tensor and finally calculated the associated seismic velocities for the same azimuth and inclination angle as for the ultrasonic experiments. We compare these two velocity profiles and discover a significant discrepancy in presence of large ice grains. However, with an increasing number of ice grains both methods provide similar results. Although the ultrasonic measurements reveal some ambiguities, these can be resolved when considering the information derived from the standard analysis.

We conclude that ultrasonic measurements along the ice core are suitable to support the established COF analysis for sufficiently small grains as found in polar cores. We recommend further exploration of the potential of the presented technique as it provides both the chance to obtain a continuous fabric profile and a direct link to large-scale seismic measurements in the vicinity of ice core drilling sites.
description: EGUsphere
Ophrys messaritica.

Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1989

description: Wissenschaftliche botanische Probe von Blütenteilen aus Agia Triada - Phaistos (Festos), Kreta, Griechenland, datiert 21.12.1989.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 590002, eingereiht als 1990-02
description: ETH-Bibliothek
Cephalanthera kotschyana.
Blütenanalyse, montiert auf Papier erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1992

description: Wissenschaftliche botanische Probe von Blütenteilen aus Anatolien (Türkei): Konya: Nähe Belören, Yeniköy, datiert 26.5.1992.
In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 192046 (leg. R. Peter), eingereiht unter Cephalanthera
description: ETH-Bibliothek
Dactylorhiza traunsteineri, beschriftet mit: D. traunsteineri - Komplex.

Blütenanalyse, montiert in einem Diarahmen, erstellt von Hans Reinhard
Creators: name: Reinhard, Hans R.
Publisher: name: [s.n.]
Year: 1977

description: Wissenschaftliche botanische Probe von Blütenteilen aus Goldingen, Schweiz SG, datiert 7.6.1977.

In der Orchideensammlung von H. Reinhard gekennzeichnet mit HR 57713, eingereiht als 1977-13
description: ETH-Bibliothek
title: Brüchige Figuren?
Creators: name: Günthör, Edeltraud
Year: 2012

description: Drei Frauenfiguren bilden den Ausgangspunkt der vorliegenden Arbeit: Es handelt sich dabei um Jeschute aus dem "Parzival", Enite aus dem "Erec" und Laudine aus dem "Iwein"-Roman. Diese drei höfischen Damen werden in ihrer spezifischen Figurenkonzeption erfasst. Das zentrale Augenmerk liegt dabei auf den Brüchen in der Konzeption der jweiligen Figur. Es wird erörtert, wie diese Veränderungen zu Stande kommen und wie sie sich manifestieren. Die Texte werden mit Hilfe des close reading-Verfahrens bearbeitet und an Hand ausgewählter Textstellen wird erläutert, wie sich diese Variabilität in der Figurenzeichnung auf die Handlung auswirkt. Es zeigt sich eine starke Abhängigkeit der weiblichen Konzeption von der männlichen Wahrnehmung und dem männlichen Tun. Männliche Aktion bzw. Interaktion stellt den auslösenden Moment für einen Bruch dar. Als wesentlich erweist sich die Kategorie des Körpers: Am Anfang ihrer Darstellung steht immer der schöne und erotisch wirkende Körper der Frau im Zentrum. Er wird aus einer männlichen Perspektive geschildert. Ein Teil der Arbeit ist dem Vergleich zwischen Jeschute und ihrem Vorbild Enite gewidmet. Es wird analysiert, in wie fern Wolfram seinem Dichterkollegen Hartmann folgt und wo sich Abweichungen in der Darstellung ergeben. Auch zwischen Enite und Laudine sind Parallelen zu verzeichen. Brüche in der Figurenkonzeption lassen die behandelten Charaktere plastischer erscheinen. Durch diese Uneindeutigkeit und Brüchigkeit gewinnen sie an Individualität.