cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Die Maria-Sand-Kapelle bei Herbolzheim i.Br.
Creators: name: Ginter, Hermann
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 2 (1958): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Reliable machine learning potentials based on artificial neural network for graphene
Creators: name: Singh, Akash
name: Li, Yumeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Graphene is one of the most researched two dimensional (2D) material due to its unique combination of mechanical, thermal and electrical properties. Special 2D structure of graphene enables it to exhibit a wide range of peculiar material properties like high Young's modulus, high specific strength etc. which are critical for myriad of applications including light weight structural materials, multi-functional coating and flexible electronics. It is quite challenging and costly to experimentally investigate graphene/graphene based nanocomposites, computational simulations such as molecular dynamics (MD) simulations are widely adopted for understanding the microscopic origins of their unique properties. However, disparate results were reported from computational studies, especially MD simulations using various empirical inter-atomic potentials. In this work, an artificial neural network based interatomic potential has been developed for graphene to represent the potential energy surface based on first principle calculations. The developed machine learning potential (MLP) facilitates high fidelity MD simulations to approach the accuracy of ab initio methods but with a fraction of computational cost, which allows larger simulation size/length, and thereby enables accelerated discovery/design of graphene-based novel materials. Lattice parameter, coefficient of thermal expansion (CTE), Young's modulus and yield strength are estimated using machine learning accelerated MD simulations (MLMD), which are compared to experimental/first principle calculations from previous literatures. It is demonstrated that MLMD can capture the dominating mechanism governing CTE of graphene, including effects from lattice parameter and out of plane rippling.
description: 10 pages
Preemptively Pruning Clever-Hans Strategies in Deep Neural Networks
Creators: name: Linhardt, Lorenz
name: Müller, Klaus-Robert
name: Montavon, Grégoire
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Robustness has become an important consideration in deep learning. With the help of explainable AI, mismatches between an explained model's decision strategy and the user's domain knowledge (e.g. Clever Hans effects) have been identified as a starting point for improving faulty models. However, it is less clear what to do when the user and the explanation agree. In this paper, we demonstrate that acceptance of explanations by the user is not a guarantee for a machine learning model to be robust against Clever Hans effects, which may remain undetected. Such hidden flaws of the model can nevertheless be mitigated, and we demonstrate this by contributing a new method, Explanation-Guided Exposure Minimization (EGEM), that preemptively prunes variations in the ML model that have not been the subject of positive explanation feedback. Experiments demonstrate that our approach leads to models that strongly reduce their reliance on hidden Clever Hans strategies, and consequently achieve higher accuracy on new data.
description: 18 pages + supplement
Knowledge Distillation approach towards Melanoma Detection
Creators: name: Khan, Md. Shakib
name: Alam, Kazi Nabiul
name: Dhruba, Abdur Rab
name: Zunair, Hasib
name: Mohammed, Nabeel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Melanoma is regarded as the most threatening among all skin cancers. There is a pressing need to build systems which can aid in the early detection of melanoma and enable timely treatment to patients. Recent methods are geared towards machine learning based systems where the task is posed as image recognition, tag dermoscopic images of skin lesions as melanoma or non-melanoma. Even though these methods show promising results in terms of accuracy, they are computationally quite expensive to train, that questions the ability of these models to be deployable in a clinical setting or memory constraint devices. To address this issue, we focus on building simple and performant models having few layers, less than ten compared to hundreds. As well as with fewer learnable parameters, 0.26 million (M) compared to 42.5M using knowledge distillation with the goal to detect melanoma from dermoscopic images. First, we train a teacher model using a ResNet-50 to detect melanoma. Using the teacher model, we train the student model known as Distilled Student Network (DSNet) which has around 0.26M parameters using knowledge distillation achieving an accuracy of 91.7%. We compare against ImageNet pre-trained models such MobileNet, VGG-16, Inception-V3, EfficientNet-B0, ResNet-50 and ResNet-101. We find that our approach works well in terms of inference runtime compared to other pre-trained models, 2.57 seconds compared to 14.55 seconds. We find that DSNet (0.26M parameters), which is 15 times smaller, consistently performs better than EfficientNet-B0 (4M parameters) in both melanoma and non-melanoma detection across Precision, Recall and F1 scores
title: Aufgedeckte mittelalterliche Wandmalereien in der Stadpfarrkirche zu Mosbach
Creators: name: Niester, Heinrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 2, Nr. 4 (1959): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Sonnenfleckenzeichnung Nr. 295.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.12.1999, 08:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Transport Phenomena in Excitable Systems: Existence of Bounded Solutions and Absorbing Sets
Creators: name: De Angelis, Monica
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, the transport phenomena of synaptic electric impulses are considered. The FitzHugh--Nagumo and FitzHugh--Rinzel models appear mathematically appropriate for evaluating these scientific issues. Moreover, applications of such models arise in several biophysical phenomena in different fields such as, for instance, biology, medicine and electronics, where, by means of nanoscale memristor networks, scientists seek to reproduce the behavior of biological synapses. The present article deals with the properties of the solutions of the FitzHugh--Rinzel system in an attempt to achieve, by means of a suitable ``energy function'', conditions ensuring the boundedness and existence of absorbing sets in the phase space. The results obtained depend on several parameters characterizing the system, and, as an example, a concrete case is considered.
Energetic long-lived particles in the CMS muon chambers
Creators: name: Mitridate, Andrea
name: Papucci, Michele
name: Wang, Christina
name: Peña, Cristián
name: Xie, Si
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a recast in different benchmark models of the recent CMS search that uses the endcap muon detector system to identify displaced showers produced by decays of long-lived particles (LLPs). The exceptional shielding provided by the steel between the stations of the muon system drastically reduces the Standard Model background that limits other existing ATLAS and CMS searches. At the same time, by using the muon system as a sampling calorimeter, the search is sensitive to LLPs energies rather than masses. We show that, thanks to these characteristics, this new search approach is sensitive to LLPs masses even lighter than a GeV, and can be complementary to proposed and existing dedicated LLP experiments.
title: Die Regisivindiskirche zu Lauffen am Neckar. Bericht zur Innenerneuerung
Creators: name: Adelmann, Georg Sigmund Graf
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 3, Nr. 1 (1960), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Sonnenfleckenzeichnung Nr. 89.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.04.1999, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 20.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.01.1999, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Dusty supernovae running the thermodynamics of the matter reinserted within young and massive super stellar clusters
Creators: name: Tenorio-Tagle, Guillermo
name: Silich, Sergiy
name: Martínez-González, Sergio
name: Muñoz-Tuñón, Casiana
name: Palouš, Jan
name: Wünsch, Richard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Following the observational and theoretical evidence that points at core collapse supernovae as major producers of dust, here we calculate the hydrodynamics of the matter reinserted within young and massive super stellar clusters under the assumption of gas and dust radiative cooling. The large supernova rate expected in massive clusters allows for a continuous replenishment of dust immersed in the high temperature thermalized reinserted matter and warrants a stationary presence of dust within the cluster volume during the type II supernova era. We first show that such a balance determines the range of dust to gas mass ratio and this the dust cooling law. We then search for the critical line that separates stationary cluster winds from the bimodal cases in the cluster mechanical luminosity (or cluster mass) vs cluster size parameter space. In the latter, strong radiative cooling reduces considerably the cluster wind mechanical energy output and affects particularly the cluster central regions, leading to frequent thermal instabilities that diminish the pressure and inhibit the exit of the reinserted matter. Instead matter accumulates there and is expected to eventually lead to gravitational instabilities and to further stellar formation with the matter reinserted by former massive stars. The main outcome of the calculations is that the critical line is almost two orders of magnitude or more, depending on the assumed value of the adiabatic wind terminal speed, lower than when only gas radiative cooling is applied. And thus, many massive clusters are predicted to enter the bimodal regime.
description: 13 pages, 4 figures. Accepted for publication in The Astrophysical Journal
A new approach to Kazhdan-Lusztig theory of type B via quantum symmetric pairs
Creators: name: Bao, Huanchen
name: Wang, Weiqiang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We show that Hecke algebra of type B and a coideal subalgebra of the type A quantum group satisfy a double centralizer property, generalizing the Schur-Jimbo duality in type A. The quantum group of type A and its coideal subalgebra form a quantum symmetric pair. A new theory of canonical bases arising from quantum symmetric pairs is initiated. It is then applied to formulate and establish for the first time a Kazhdan-Lusztig theory for the BGG category O of the ortho-symplectic Lie superalgebras $\mathfrak{osp}(2m+1|2n)$. In particular, our approach provides a new formulation of the Kazhdan-Lusztig theory for Lie algebras of type B/C.
description: v3, book format, with labels of chapters/theorems/equations compatible with the published version
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 3, Nr. 2 (1960), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Impact of electron shell excitations on the energy spectrum of $β$-electrons in neutrinoless double-$β$ decay
Creators: name: Krivoruchenko, M. I.
name: Tyrin, K. S.
name: Karpeshin, F. F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electron shell of the daughter atoms often appears excited in the double-$β$ decays, which causes a change in the energy taken away by $β$-electrons. The average value and variance of the excitation energy of the electron shell of the daughter atom are calculated for the double-$β$ decay of germanium $_{32}^{76}\mathrm{Ge} \rightarrow _{34}^{76}\mathrm{Se}^*+2β^-(+~2\bar{ν_e})$ in both the Thomas--Fermi model and the relativistic Dirac--Hartree--Fock theory. Using the results obtained, a two-parameter model of the energy spectrum of $β$-electrons in the neutrinoless mode is constructed, taking into account reaction energy redistribution in the decay channels. The shift in total energy of $β$-electrons is found to be under 50 eV at a confidence level of 90%. The average excitation energy, on the other hand, is an order of magnitude higher and equal to $\sim 400$ eV, while the square root of the variance is equal to $\sim 2900$ eV, which is presumably explained by the contribution of the core electrons to the energy characteristics of the process. The probability is nearly saturated with excitations with a small amount of released energy, which is common for the outermost electrons. The distortion of the peak shape of the neutrinoless double-$β$ decay should be taken into consideration when analyzing data from detectors with a resolution of $\sim 100$ eV or higher.
description: 5 pages, 1 figure
Ramsey numbers of ordered graphs
Creators: name: Balko, Martin
name: Cibulka, Josef
name: Král, Karel
name: Kynčl, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05D10, 05C55

description: An ordered graph is a pair $\mathcal{G}=(G,\prec)$ where $G$ is a graph and $\prec$ is a total ordering of its vertices. The ordered Ramsey number $\overline{R}(\mathcal{G})$ is the minimum number $N$ such that every ordered complete graph with $N$ vertices and with edges colored by two colors contains a monochromatic copy of $\mathcal{G}$. In contrast with the case of unordered graphs, we show that there are arbitrarily large ordered matchings $\mathcal{M}_n$ on $n$ vertices for which $\overline{R}(\mathcal{M}_n)$ is superpolynomial in $n$. This implies that ordered Ramsey numbers of the same graph can grow superpolynomially in the size of the graph in one ordering and remain linear in another ordering. We also prove that the ordered Ramsey number $\overline{R}(\mathcal{G})$ is polynomial in the number of vertices of $\mathcal{G}$ if the bandwidth of $\mathcal{G}$ is constant or if $\mathcal{G}$ is an ordered graph of constant degeneracy and constant interval chromatic number. The first result gives a positive answer to a question of Conlon, Fox, Lee, and Sudakov. For a few special classes of ordered paths, stars or matchings, we give asymptotically tight bounds on their ordered Ramsey numbers. For so-called monotone cycles we compute their ordered Ramsey numbers exactly. This result implies exact formulas for geometric Ramsey numbers of cycles introduced by Károlyi, Pach, Tóth, and Valtr.
description: 29 pages, 13 figures, to appear in Electronic Journal of Combinatorics
Sonnenfleckenzeichnung Nr. 75.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.03.1999, 13:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Modeling Gas Evacuation Mechanisms in Present-Day Globular Clusters: Stellar Winds from Evolved Stars and Pulsar Heating
Creators: name: Naiman, J.
name: Soares-Furtado, M.
name: Ramirez-Ruiz, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We employ hydrodynamical simulations to investigate the underlying mechanism responsible for the low levels of gas and dust in globular clusters. Our models examine the competing effects of energy and mass supply from the various components of the evolved stellar population for globular clusters 47 Tucanae, M15, NGC 6440, and NGC 6752. Ignoring all other gas evacuation processes, we find that the energy output from the stars that have recently turned off the main sequence are capable of effectively clearing the evolved stellar ejecta and producing intracluster gas densities consistent with current observational constraints. This result distinguishes a viable gas and dust evacuation mechanism that is ubiquitous in globular clusters. In addition, we extend our analysis to probe the efficiency of pulsar wind feedback in globular clusters. The detection of intracluster ionized gas in 47~Tucanae allows us to place particularly strict limits on pulsar wind thermalization efficiency, which must be extremely low in the cluster's core in order to be in accordance with the observed density constraints.
description: 13 pages, 9 figures, published to MNRAS
title: Das Alter des Mittelschiffdachstuhls der ehemaligen Benediktiner-Klosterkirche Mittelzell auf der Insel Reichenau/Bodensee
Creators: name: Reuter, Reinhard
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 12, Nr. 3 (1969): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Sonnenfleckenzeichnung Nr. 275.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.11.1999, 10:15, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
title: State-of-the-Art Room Temperature Operable Zero-Bias Schottky Diode-Based Terahertz Detector Up to 5.56 THz
Creators: name: Yadav, Rahul
name: Ludwig, Florian
name: Faridi, Fahd Rushd
name: Klopf, J. Michael
name: Roskos, Hartmut G.
name: Preu, Sascha
name: Penirschke, Andreas
Publisher: name: MDPI
Year: 2023

description: We present the characterization of a Zero-bias Schottky diode-based Terahertz (THz) detector up to 5.56 THz. The detector was operated with both a table-top system until 1.2 THz and at a Free-Electron Laser (FEL) facility at singular frequencies from 1.9 to 5.56 THz. We used two measurement techniques in order to discriminate the sub-ns-scale (via a 20 GHz oscilloscope) and the ms-scale (using the lock-in technique) responsivity. While the lock-in measurements basically contain all rectification effects, the sub-ns-scale detection with the oscilloscope is not sensitive to slow bolometric effects caused by changes of the IV characteristic due to temperature. The noise equivalent power (NEP) is 10 pW/Hz in the frequency range from 0.2 to 0.6 THz and 17 pW/Hz at 1.2 THz and increases to 0.9 μW/Hz at 5.56 THz, which is at the state of the art for room temperature zero-bias Schottky diode-based THz detectors with non-resonant antennas. The voltage and current responsivity of ∼500 kV/W and ∼100 mA/W, respectively, is demonstrated over a frequency range of 0.2 to 1.2 THz with the table-top system.
Causal inference with a functional outcome
Creators: name: Ecker, Kreske
name: de Luna, Xavier
name: Schelin, Lina
Publisher: name: arXiv
Year: 2023
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This paper presents methods to study the causal effect of a binary treatment on a functional outcome with observational data. We define a Functional Average Treatment Effect and develop an outcome regression estimator. We show how to obtain valid inference on the FATE using simultaneous confidence bands, which cover the FATE with a given probability over the entire domain. Simulation experiments illustrate how the simultaneous confidence bands take the multiple comparison problem into account. Finally, we use the methods to infer the effect of early adult location on subsequent income development for one Swedish birth cohort.
description: 31 pages, 9 figures
title: Der fünfte Stuttgarter Restauratorenkurs 1969. Heizung – Feuchtigkeit und Kunstwerk
Creators: name: Adelmann, Georg Sigmund Graf
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 12, Nr. 4 (1969): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Quantum double and $κ$-Poincaré symmetries in (2+1)-gravity and Chern-Simons theory
Creators: name: Meusburger, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review the role of Drinfeld doubles and kappa-Poincare symmetries in quantised (2+1)-gravity and Chern-Simons theory. We discuss the conditions under which a given Hopf algebra symmetry is compatible with a Chern-Simons theory and determine this compatibility explicitly for the Drinfeld doubles and kappa-Poincare symmetries associated with the isometry groups of (2+1)-gravity. In particular, we explain that the usual kappa-Poincare symmetries with a timelike deformation are not directly associated with (2+1)-gravity. These kappa-Poincare symmetries are linked to Chern-Simons theory only in the de Sitter case, and the relevant Chern-Simons theory is physically inequivalent to (2+1)-gravity.
description: 11 pages, no figures, expanded version of talk at the conference Theory Canada 4, references and explanations added, typos corrected
title: [Kleine Arbeitsberichte. Restaurierungen in Stuttgart -] Die evangelische Markuskirche
Creators: name: Bongartz, Norbert
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 6, Nr. 4 (1977), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die Jagstmühle in Dörzbach. Ein technisches Kulturdenkmal
Creators: name: Mezger, Siegfried
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 11, Nr. 3 (1982), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Global Lorentzian geometry from lightlike geodesics: What does an observer in (2+1)-gravity see?
Creators: name: Meusburger, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show how an observer could measure the non-local holonomy variables that parametrise the flat Lorentzian 3d manifolds arising as spacetimes in (2+1)-gravity. We consider an observer who emits lightrays that return to him at a later time and performs several realistic measurements associated with such returning lightrays: the eigentime elapsed between the emission of the lightrays and their return, the directions into which the light is emitted and from which it returns and the frequency shift between the emitted and returning lightray. We show how the holonomy variables and hence the full geometry of these manifolds can be reconstructed from these measurements in finite eigentime.
description: Talk given at the workshop Chern-Simons Gauge Theory: 20 years after, August 3-7 2009, Hausdorff Center for Mathematics, 18 pages, 9 eps figures
An Embedding Space Approach to Carrollian CFT Correlators for Flat Space Holography
Creators: name: Salzer, Jakob
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Carrollian conformal field theories (carrollian CFTs) are natural field theories on null infinity of an asymptotically flat spacetime or, in general, geometries with conformal carrollian structure. Using a basis transformation, gravitational S-matrix elements can be brought into the form of correlators of a carrollian CFT. Therefore, it has been suggested that carrollian CFTs could provide a co-dimension one dual description to gravity in asymptotically flat spacetimes. In this work, we construct an embedding space formalism for three-dimensional carrollian CFTs and use it to determine two- and three-point correlators. These correlators are fixed by the global subgroup ISO(3,1) of the carrollian conformal symmetries, i.e., the Bondi--van der Burg--Metzner--Sachs symmetries (BMS). The correlators coincide with well-known two- and three-point scattering amplitudes in Minkowski space written with respect to a basis of asymptotic position states.
description: 45 pages; v2 appendix expanded, agrees with published version
title: [Nachruf] Jutta Stadelmann
Creators: name: Schiek, Siegwalt
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 3 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Renormalization Group Evolution of the Standard Model Dimension Six Operators II: Yukawa Dependence
Creators: name: Jenkins, Elizabeth E.
name: Manohar, Aneesh V.
name: Trott, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the complete order y^2 and y^4 terms of the 59 x 59 one-loop anomalous dimension matrix for the dimension-six operators of the Standard Model effective field theory, where y is a generic Yukawa coupling. These terms, together with the terms of order lambda, lambda^2 and lambda y^2 depending on the Standard Model Higgs self-coupling lambda which were calculated in a previous work, yield the complete one-loop anomalous dimension matrix in the limit of vanishing gauge couplings. The Yukawa contributions result in non-trivial flavor mixing in the various operator sectors of the Standard Model effective theory.
description: 23 pp, 1 figure, v3: minor corrections. The complete SMEFT RGE will be maintained at http://einstein.ucsd.edu/smeft/
Sonnenfleckenzeichnung Nr. 96.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.04.1999, 08:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Constraints on NJL four-fermion effective interactions from neutrinoless double beta decay
Creators: name: Pacioselli, Luca
name: Panella, Orlando
name: Presilla, Matteo
name: Xue, She-Sheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the contribution of a heavy right-handed Majorana neutrino to neutrinoless double beta decay ($0νββ$) via four-fermion effective interactions of Nambu-Jona-Lasinio (NJL) type. In this physical scenario, the sterile neutrino contributes to the nuclear transition through gauge, contact, and mixed interactions. Using the lower limit on the half-life of $0νββ$ from the KamLAND-Zen experiment, we then constrain the effective right-handed coupling between the sterile neutrino and the $W$ boson: $\mathcal{G}^{W}_{R}$. Eventually, we show that the obtained bounds are compatible with those found in the literature, which highlights the complementarity of this type of phenomenological study with high-energy experiments.
description: 19 pages, 6 figures. Version published by JHEP; typos corrected, minor style changes, 3 repeated references removed, Acknowledgments section added
Towards a Fully Autonomous UAV Controller for Moving Platform Detection and Landing
Creators: name: Piponidis, Michalis
name: Aristodemou, Panayiotis
name: Theocharides, Theocharis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: While Unmanned Aerial Vehicles (UAVs) are increasingly deployed in several missions, their inability of reliable and consistent autonomous landing poses a major setback for deploying such systems truly autonomously. In this paper we present an autonomous UAV landing system for landing on a moving platform. In contrast to existing attempts, the proposed system relies only on the camera sensor, and has been designed as lightweight as possible. The proposed system can be deployed on a low power platform as part of the drone payload, whilst being indifferent to any external communication or any other sensors. The system relies on a Neural Network (NN) based controller, for which a target and environment agnostic simulator was created, used in training and testing of the proposed system, via Reinforcement Learning (RL) and Proximal Policy optimization (PPO) to optimally control and steer the drone towards landing on the target. Through real-world testing, the system was evaluated with an average deviation of 15cm from the center of the target, for 40 landing attempts.
description: 2022 35th International Conference on VLSI Design and 2022 21st International Conference on Embedded Systems (VLSID)
Stochastic Hyperbolic Systems, Small Perturbations and Pathwise Approximation
Creators: name: Aboulalaa, Adnan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: (2000): 60H15, 60F10, 35R60, 35L40, 35A21

description: This paper is devoted to the study of hyperbolic systems of linear partial differential equations perturbed by a Brownian motion. The existence and uniqueness of solutions are proved by an energy method. The specific features of this class of stochastic partial differential equations are highlighted and the comparison with standard existence results for SPDEs is discussed. The small perturbations problem is studied and a large deviation principle is stated. A pathwise approximation result, similar to the stochastic differential equations case, is established, with an application to a support theorem.
description: 51 pages, LaTeX
title: Estimation of Entropy Generation in a SCR-DeNOx System with AdBlue Spray Dynamic Using Large Eddy Simulation
Creators: name: Nishad, Kaushal
name: Agrebi, Senda
Publisher: name: MDPI
Year: 2023

description: In this work, the entropy generation analysis is extended to the multi-phase fluid flow within a Large Eddy Simulation (LES) framework. The selected study case consists of a generic selective catalytic reduction (SCR) configuration in which the water/AdBlue is injected into a cross-flow of the internal combustion (IC) engine exhaust gas. The adopted numerical modules are first assessed by comparing with experimental data for film thickness in the case of AdBlue injection and then with H₂O mass fraction and temperature for water injection case. Subsequently, the impact of heat transfer, fluid flow, phase change, mixing and chemical reaction due to AdBlue injection on the entropy generation is assessed. Hence, the individual contributions of viscous and heat dissipation together with the species mixing, chemical reaction during the thermal decomposition of urea into NH₃ and dispersed phase are especially evaluated and analysed. In comparison to the shares of the viscous and mixing processes, the entropy generation is predominated by the heat, chemical and dispersed phase contributions. The influence of the operating parameters such as exhaust gas temperature, flow rate and AdBlue injection on entropy generation is discussed in details. Using a suitable measures, the irreversibility map and some necessary inferences are also provided.
Sonnenfleckenzeichnung Nr. 38.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.02.1999, 10:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Interaction between pentacene molecules and monolayer transition metal dichalcogenides
Creators: name: Black, E.
name: Kratzer, P.
name: Morbec, J. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using first-principles calculations based on density-functional theory, we investigated the adsorption of pentacene molecules on monolayer two-dimensional transition metal dichalcogenides (TMD). We considered the four most popular TMDs, namely, MoS$_2$, MoSe$_2$, WS$_2$ and WSe$_2$, and we examined the structural and electronic properties of pentacene/TMD systems. We discuss how monolayer pentacene interacts with the TMDs, and how this interaction affects the charge transfer and work function of the heterostructure. We also analyse the type of band alignment formed in the heterostructure and how it is affected by molecule-molecule and molecule-substrate interactions. Such analysis is valuable since pentacene/TMD heterostructures are considered to be promising for application in flexible, thin and lightweight photovoltaics and photodetectors.
description: 13 pages, 4 figures
Geometry and observables in (2+1)-gravity
Creators: name: Meusburger, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review the geometrical properties of vacuum spacetimes in (2+1)-gravity with vanishing cosmological constant. We explain how these spacetimes are characterised as quotients of their universal cover by holonomies. We explain how this description can be used to clarify the geometrical interpretation of the fundamental physical variables of the theory, holonomies and Wilson loops. In particular, we discuss the role of Wilson loop observables as the generators of the two fundamental transformations that change the geometry of (2+1)-spacetimes, grafting and earthquake. We explain how these variables can be determined from realistic measurements by an observer in the spacetime.
description: Talk given at 2nd School and Workshop on Quantum Gravity and Quantum Geometry (Corfu, September 13-20 2009); 10 pages, 13 eps figures
On two body gravitational scattering within perturbative gravit
Creators: name: Latosh, Boris
name: Yachmenev, Anton
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss an alternative approach to studying the low energy limit of quantum general relativity. We investigate the low energy limit of a scattering cross-section for two massive scalar particles. Unlike calculations involving the reconstruction of the gravitational potential, our approach avoids ambiguities and is applicable in any frame. Our results are in agreement with both relativistic and non-relativistic calculations. The non-analytic parts of scattering amplitudes that are dominant in the low energy limit also contribute to the cross-section and provide a way to separate the lading order corrections.
Sonnenfleckenzeichnung Nr. 127.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.05.1999, 08:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 30.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.02.1999, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1999

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Iterative stochastic subspace self-consistent field method
Creators: name: Loos, Pierre-François
name: Rivail, Jean-Louis
name: Assfeld, Xavier
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a new self-consistent field (SCF) algorithm based on an iterative, partially stochastic \textit{``Divide \& Conquer''}-type approach. This new SCF algorithm is a simple variant of the usual SCF procedure and can be easily implemented in parallel. A detailed description of the algorithm is reported. We illustrate this new method on one-dimensional hydrogen chains and three-dimensional hydrogen clusters.
description: 7 pages, 6 figures and 1 table
Gauge fixing and classical dynamical r-matrices in ISO(2,1)-Chern-Simons theory
Creators: name: Meusburger, Catherine
name: Schönfeld, Torsten
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply Dirac's gauge fixing procedure to Chern-Simons theory with gauge group ISO(2,1) on manifolds RxS, where S is a punctured oriented surface of general genus. For all gauge fixing conditions that satisfy certain structural requirements, this yields an explicit description of the Poisson structure on the moduli space of flat ISO(2,1)-connections on S via the resulting Dirac bracket. The Dirac bracket is determined by classical dynamical r-matrices for ISO(2,1). We show that the Poisson structures and classical dynamical r-matrices arising from different gauge fixing conditions are related by dynamical ISO(2,1)-valued transformations that generalise the usual gauge transformations of classical dynamical r-matrices. By means of these transformations, it is possible to classify all Poisson structures and classical dynamical r-matrices obtained from such gauge fixings. Generically these Poisson structures combine classical dynamical r-matrices for non-conjugate Cartan subalgebras of iso(2,1).
description: substantially revised version: structural changes, explanations added; 37 pages, 1 figure
CO2-driven surface changes in the Hapi region on Comet 67P/Churyumov-Gerasimenko
Creators: name: Davidsson, Björn J. R.
name: Schloerb, F. Peter
name: Fornasier, Sonia
name: Oklay, Nilda
name: Gutiérrez, Pedro J.
name: Buratti, Bonnie J.
name: Chmielewski, Artur B.
name: Gulkis, Samuel
name: Hofstadter, Mark D.
name: Keller, H. Uwe
name: Sierks, Holger
name: Güttler, Carsten
name: Küppers, Michael
name: Rickman, Hans
name: Choukroun, Mathieu
name: Lee, Seungwon
name: Lellouch, Emmanuel
name: Lethuillier, Anthony
name: Da Deppo, Vania
name: Groussin, Olivier
name: Kührt, Ekkehard
name: Thomas, Nicolas
name: Tubiana, Cecilia
name: El-Maarry, M. Ramy
name: La Forgia, Fiorangela
name: Mottola, Stefano
name: Pajola, Maurizio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Between 2014 December 31 and 2015 March 17, the OSIRIS cameras on Rosetta documented the growth of a 140m wide and 0.5m deep depression in the Hapi region on Comet 67P/Churyumov-Gerasimenko. This shallow pit is one of several that later formed elsewhere on the comet, all in smooth terrain that primarily is the result of airfall of coma particles. We have compiled observations of this region in Hapi by the microwave instrument MIRO on Rosetta, acquired during October and November 2014. We use thermophysical and radiative transfer models in order to reproduce the MIRO observations. This allows us to place constraints on the thermal inertia, diffusivity, chemical composition, stratification, extinction coefficients, and scattering properties of the surface material, and how they evolved during the months prior to pit formation. The results are placed in context through long-term comet nucleus evolution modelling. We propose that: 1) MIRO observes signatures that are consistent with a solid-state greenhouse effect in airfall material; 2) CO2 ice is sufficiently close to the surface to have a measurable effect on MIRO antenna temperatures, and likely is responsible for the pit formation in Hapi observed by OSIRIS; 3) the pressure at the CO2 sublimation front is sufficiently strong to expel dust and water ice outwards, and to compress comet material inwards, thereby causing the near-surface compaction observed by CONSERT, SESAME, and groundbased radar, manifested as the "consolidated terrain" texture observed by OSIRIS.
description: 32 pages, 41 figures. This is a pre-copyedited, author-produced PDF of an article accepted for publication in MNRAS following peer review