cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Kellerkartierung und Hausforschung in Freiburg i. Br.
Creators: name: Schmidt, Leo
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 2 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die Wehrkirche in Weissach, Kreis Böblingen
Creators: name: Fleck, Walther-Gerd
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 2 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Complementarity of $μ$TRISTAN and Belle II in searches for charged-lepton flavour violation
Creators: name: Lichtenstein, Gabriela
name: Schmidt, Michael A.
name: Valencia, German
name: Volkas, Raymond R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyse the potential of the proposed $μ^+ μ^+$ and $μ^+ e^-$ collider $μ$TRISTAN to complement the searches for charged-lepton flavour-violation (CLFV) that can be carried out by Belle II. $μ$TRISTAN offers the possibility of directly producing and studying new resonances that could mediate CLFV for a certain range of masses. In addition, we find that it can produce competitive bounds to those from Belle II for cases where the new resonance lies beyond direct reach. We illustrate these points with three $Z_3$ "lepton triality" models, where we also find an example that can only be probed by $μ$TRISTAN. These three models feature doubly-charged scalars, denoted $k_{1,2,3}$ respectively, that induce both CLFV and flavour-conserving processes. Tree-level $k_1$ exchange induces the CLFV scattering process $μ^+ e^- \to e^+ τ^-$, while $k_2$ interactions induce $μ^+ μ^+ \to τ^+ e^+$, $μ^+ e^- \to τ^+ μ^-$ and make a non-SM contribution to the flavour-conserving scattering $μ^+ μ^+ \to μ^+ μ^+$. The $k_3$ model has a non-SM contribution to the flavour-conserving process $μ^+ e^- \to μ^+ e^-$. Other scattering processes involving $k_1$, $k_2$ or $k_3$ are not relevant for $μ$TRISTAN and outside the scope of our analysis. We quantify the sensitivity of $μ$TRISTAN for each of these processes. For the $k_1$ and $k_2$ cases we compare the $μ$TRISTAN reach to the expected sensitivity of Belle II to the crossing symmetry related CLFV $τ$ decays.
title: Hans Stather: Konstanzer Grabungsberichte. Neue Ausgrabungsfunde Alt-Konstanzer Baulichkeiten - Zeugnisse frühmittelalterlichen Lebens. Verlag des Südkurier, Konstanz 1984. 72 Seiten mit 10 Abbildungen und 8 Lageskizzen
Creators: name: Schallmayer, Egon
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 2 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Sonnenfleckenzeichnung Nr. 297.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.12.1999, 10:00, 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)
PPA: Principal Parcellation Analysis for Brain Connectomes and Multiple Traits
Creators: name: Liu, Rongjie
name: Li, Meng
name: Dunson, David B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Our understanding of the structure of the brain and its relationships with human traits is largely determined by how we represent the structural connectome. Standard practice divides the brain into regions of interest (ROIs) and represents the connectome as an adjacency matrix having cells measuring connectivity between pairs of ROIs. Statistical analyses are then heavily driven by the (largely arbitrary) choice of ROIs. In this article, we propose a novel tractography-based representation of brain connectomes, which clusters fiber endpoints to define a data adaptive parcellation targeted to explain variation among individuals and predict human traits. This representation leads to Principal Parcellation Analysis (PPA), representing individual brain connectomes by compositional vectors building on a basis system of fiber bundles that captures the connectivity at the population level. PPA reduces subjectivity and facilitates statistical analyses. We illustrate the proposed approach through applications to data from the Human Connectome Project (HCP) and show that PPA connectomes improve power in predicting human traits over state-of-the-art methods based on classical connectomes, while dramatically improving parsimony and maintaining interpretability. Our PPA package is publicly available on GitHub, and can be implemented routinely for diffusion image data.
MPEC 2023-F91 : 2023 FS2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 FS2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
LE 'OPPOSIZIONI' ALL'ESECUZIONE DELLA DECISIONE STRANIERA NEL REGOLAMENTO (UE) 1215/2012
Creators: name: GIUGLIANO, VALERIA
Publisher: name: Universit� degli Studi di Milano
Year: 2019

description: The work aims to analyse, in the context of the system of recognition and enforcement laid down by Regulation (EU) No 1215/2012, which abolished exequatur, the compatibility of the rules governing the opposition to enforcement under the Italian law when it is proposed against a foreign judgment. In particular, the Regulation establishes that a judgment (even provisionally) enforceable in the Member State of origin shall be automatically enforceable in any other Member State. It also suggests that the grounds for non-recognition and non-enforcement provided for in the text should be combined with the internal grounds for ordinary opposition to enforcement in the Member State addressed. The work therefore identifies the requirements a judgment shall have to be automatically recognised and enforced; the declaratory and ascertaining effects that are automatically recognised; and the formalities that must be considered as necessary under Italian law for the judgment to be enforced. It then outlines the characteristics of the actions provided for by the Regulation, proposing the most suitable procedural forms to ensure their effectiveness, in order to define the scope of application of the opposition to enforcement based on additional grounds, within the State requested of enforcement. It focuses on the grounds which affect the substantive right incorporated in the title and which may give rise to an opposition to enforcement on the merits. Therefore, indications are drawn on the subject of the substantive opposition to the foreign judgment, which is claimed to be comparable, if not identical, to the opposition to enforcement under Article 615 of the Code of Civil Procedure, and from the nature of the action it is inferred that the judgment issued at the end of the opposition shall not circulate in the European space of Justice, as it is related to the right to proceed with enforcement in Italy. The last part of the work is dedicated to an analysis of the cases provided for by the Regulation in order to suspend the enforcement proceedings and aims to a coordination of such hypotheses with the internal provisions.
Grand-canonical molecular dynamics simulations powered by a hybrid 4D nonequilibrium MD/MC method: Implementation in LAMMPS and applications to electrolyte solutions
Creators: name: Kim, Jeongmi
name: Belloni, Luc
name: Rotenberg, Benjamin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Molecular simulations in an open environment, involving ion exchange, are necessary to study various systems, from biosystems to confined electrolytes. However, grand-canonical simulations are often computationally demanding in condensed phases. A promising method (L. Belloni, J. Chem. Phys., 2019), one of the hybrid nonequilibrium molecular dynamics/Monte Carlo algorithms, was recently developed, which enables efficient computation of fluctuating number or charge density in dense fluids or ionic solutions. This method facilitates the exchange through an auxiliary dimension, orthogonal to all physical dimensions, by reducing initial steric and electrostatic clashes in three-dimensional systems. Here, we report the implementation of the method in LAMMPS with a Python interface, allowing facile access to grand-canonical molecular dynamics (GCMD) simulations with massively parallelized computation. We validate our implementation with two electrolytes, including a model Lennard-Jones electrolyte similar to a restricted primitive model and aqueous solutions. We find that electrostatic interactions play a crucial role in the overall efficiency due to their long-range nature, particularly for water or ion-pair exchange in aqueous solutions. With properly screened electrostatic interactions and bias-based methods, our approach enhances the efficiency of salt-pair exchange in Lennard-Jones electrolytes by approximately four orders of magnitude, compared to conventional grand-canonical Monte Carlo. Furthermore, the acceptance rate of NaCl-pair exchange in aqueous solutions at moderate concentrations reaches about 3 $\%$ at the maximum efficiency.
title: Ziegelsteine mit aufgemodeltem Vesperbild aus Walldürn, Neckar-Odenwald-Kreis oder: „Es sind doch höchstens Kleinigkeiten, die bei der Auskernung von historischen Gebäuden zerstört werden." Ein kleiner Beitrag zum Problem der Erosion von Geschichte
Creators: name: Seidenspinner, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 4 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Das antike Sumelocenna-Rottenburg
Creators: name: Gaubatz, Anita
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 4 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Svendborgprojektet 2, 2008-2015
Creators: The Center of Research in Childhood Health, Institut for Regionel Sundhedsforskning, Niels Wedderkopp
Publisher: name: Rigsarkivet
Year: 2023

description: Formålet med undersøgelsen er at undersøge, hvilken effekt flere idrætstimer i folkeskolen har på sundheden hos børn på lang sigt. Undersøgelsen er lavet i Svendborg og undersøgelsen er foretaget som kliniske test (accelerometerdata, DXA-scanninger og blodprøver), men også ved hjælp af spørgeskemaer og sms-spørgeskemaer. Dette gøres ved hjælp af et interventionsstudie, hvor seks skoler har flere idrætstimer end normalt. Disse skoler sammenlignes med fire lignende skoler, der ikke modtager den samme mængde af idrætstimer. Formålet er at undersøge hvorvidt flere idrætstimer giver bedre sundhed i form af bedre motorik, bedre fysisk form, højere aktivitetsniveau og forbedret knoglesundhed.
Pseudo-spin model of argentophilicity in honeycomb bilayered materials
Creators: name: Kanyolo, Godwill Mbiti
name: Masese, Titus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We introduce a pseudo-spin model for the argentophilic bond expected in silver-based bilayered materials arising from a spontaneous pseudo-magnetic field interacting with pseudo-spins of two unconventional Ag ions, namely $\rm Ag^{2+}$ and $\rm Ag^{1-}$ electronically distinct from (albeit energetically degenerate to) the conventional $\rm Ag^{1+}$ cation typically observed in monolayered materials. This model suggests the possibility of tuning the dimensionality and hence the conductor-semiconductor-insulator properties of honeycomb bilayered materials by application of external fields, analogous to driving a superconducting or Coulomb blockade system to the normal regime by critical magnetic or electric fields respectively.
description: 20 pages, 6 figures
title: Die Dienststellen des Landesdenkmalamtes
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 14, Nr. 4 (1985), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Magnetic damping anisotropy in the two-dimensional van der Waals material Fe$_3$GeTe$_2$ from first principles
Creators: name: Yang, Pengtao
name: Yuan, Ruixi Liu Zhe
name: Liu, Yi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetization relaxation in the two-dimensional itinerant ferromagnetic van der Waals material Fe$_3$GeTe$_2$, below the Curie temperature, is fundamentally important for applications to low-dimensional spintronics devices. We use first-principles scattering theory to calculate the temperature-dependent Gilbert damping for bulk and single-layer Fe$_3$GeTe$_2$. The calculated damping frequency of bulk Fe$_3$GeTe$_2$ increases monotonically with temperature because of the dominance of resistivitylike behavior. By contrast, a very weak temperature dependence is found for the damping frequency of a single layer, which is attributed to strong surface scattering in this highly confined geometry. A systematic study of the damping anisotropy reveals that orientational anisotropy is present in both bulk and single-layer Fe3GeTe2. Rotational anisotropy is significant at low temperatures for both the bulk and a single layer and is gradually diminished by temperature-induced disorder. The rotational anisotropy can be significantly enhanced by up to 430% in gated single-layer Fe$_3$GeTe$_2$.
Sonnenfleckenzeichnung Nr. 236.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.09.1999, 09:00, 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. 54.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.03.1999, 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)
Low-order preconditioning of the Stokes equations
Creators: name: Voronin, Alexey
name: He, Yunhui
name: MacLachlan, Scott
name: Olson, Luke N.
name: Tuminaro, Ray
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A well-known strategy for building effective preconditioners for higher-order discretizations of some PDEs, such as Poisson's equation, is to leverage effective preconditioners for their low-order analogs. In this work, we show that high-quality preconditioners can also be derived for the Taylor-Hood discretization of the Stokes equations in much the same manner. In particular, we investigate the use of geometric multigrid based on the $\boldsymbol{ \mathbb{Q}}_1iso\boldsymbol{ \mathbb{Q}}_2/ \mathbb{Q}_1$ discretization of the Stokes operator as a preconditioner for the $\boldsymbol{ \mathbb{Q}}_2/\mathbb{Q}_1$ discretization of the Stokes system. We utilize local Fourier analysis to optimize the damping parameters for Vanka and Braess-Sarazin relaxation schemes and to achieve robust convergence. These results are then verified and compared against the measured multigrid performance. While geometric multigrid can be applied directly to the $\boldsymbol{ \mathbb{Q}}_2/\mathbb{Q}_1$ system, our ultimate motivation is to apply algebraic multigrid within solvers for $\boldsymbol{ \mathbb{Q}}_2/\mathbb{Q}_1$ systems via the $\boldsymbol{ \mathbb{Q}}_1iso\boldsymbol{ \mathbb{Q}}_2/ \mathbb{Q}_1$ discretization, which will be considered in a companion paper.
description: In the process of being to submitted to NLA@Wiley
Femtomolar detection of the heart failure biomarker NT-proBNP in artificial saliva using an immersible liquid-gated aptasensor with reduced graphene oxide
Creators: name: Jaric, Stefan
name: Kudriavtseva, Anastasiia
name: Nekrasov, Nikita
name: Orlov, Alexey V.
name: Komarov, Ivan A.
name: Barsukov, Leonty A.
name: Gadjanski, Ivana
name: Nikitin, Petr I.
name: Bobrinetskiy, Ivan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Measuring NT-proBNP biomarker is recommended for preliminary diagnostics of the heart failure. Recent studies suggest a possibility of early screening of biomarkers in saliva for non-invasive identification of cardiac diseases at the point-of-care. However, NT-proBNP concentrations in saliva can be thousand time lower than in blood plasma, going down to pg/mL level. To reach this level, we developed a label-free aptasensor based on a liquid-gated field effect transistor using a film of reduced graphene oxide monolayer (rGO-FET) with immobilized NT-proBNP specific aptamer. We found that, depending on ionic strength of tested solutions, there were different levels of correlation in responses of electrical parameters of the rGO-FET aptasensor, namely, the Dirac point shift and transconductance change. The correlation in response to NT-proBNP was high for 1.6 mM phosphate-buffered saline (PBS) and zero for 16 mM PBS in a wide range of analyte concentrations, varied from 1 fg/mL to 10 ng/mL. The effects of transconductance and Dirac point shift in PBS solutions of different concentrations are discussed. The biosensor exhibited a high sensitivity for both transconductance (2 uS/decade) and Dirac point shift (2.3 mV/decade) in diluted PBS with the linear range from 10 fg/mL to 1 pg/mL. The aptasensor performance has been also demonstrated in undiluted artificial saliva with the achieved limit of detection down to 41 fg/mL (~4.6 fM).
Comunidades del conocimiento
Creators: name: Villarpando, Carmen
name: Beldi, Mariana
name: Garrido, Karina
Publisher: name: Zenodo
Year: 2022
Subjects: Ciencia Abierta
Trabajo colaborativo
docencia
pedagogía
Cursos
enseñanza
Comunidad
Teaching
clases virtuales

description: Este artículo está enfocado en compartirles cómo fue la experiencia de Leniolabs trabajando con la información compartida y puesta a disposición por MetaDocencia.
On-the-Fly Aligned Data Augmentation for Sequence-to-Sequence ASR
Creators: name: Lam, Tsz Kin
name: Ohta, Mayumi
name: Schamoni, Shigehiko
name: Riezler, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose an on-the-fly data augmentation method for automatic speech recognition (ASR) that uses alignment information to generate effective training samples. Our method, called Aligned Data Augmentation (ADA) for ASR, replaces transcribed tokens and the speech representations in an aligned manner to generate previously unseen training pairs. The speech representations are sampled from an audio dictionary that has been extracted from the training corpus and inject speaker variations into the training examples. The transcribed tokens are either predicted by a language model such that the augmented data pairs are semantically close to the original data, or randomly sampled. Both strategies result in training pairs that improve robustness in ASR training. Our experiments on a Seq-to-Seq architecture show that ADA can be applied on top of SpecAugment, and achieves about 9-23% and 4-15% relative improvements in WER over SpecAugment alone on LibriSpeech 100h and LibriSpeech 960h test datasets, respectively.
description: Accepted at INTERSPEECH 2021
Tilt-to-length coupling in LISA Pathfinder: a data analysis
Creators: name: Armano, M
name: Audley, H
name: Baird, J
name: Binetruy, P
name: Born, M
name: Bortoluzzi, D
name: Castelli, E
name: Cavalleri, A
name: Cesarini, A
name: Cruise, A M
name: Danzmann, K
name: Silva, M de Deus
name: Diepholz, I
name: Dixon, G
name: Dolesi, R
name: Ferraioli, L
name: Ferroni, V
name: Fitzsimons, E D
name: Freschi, M
name: Gesa, L
name: Giardini, D
name: Gibert, F
name: Giusteri, R
name: Grimani, C
name: Grzymisch, J
name: Harrison, I
name: Hartig, M-S
name: Heinzel, G
name: Hewitson, M
name: Hollington, D
name: Hoyland, D
name: Hueller, M
name: Inchauspé, H
name: Jennrich, O
name: Jetzer, P
name: Johann, U
name: Johlander, B
name: Karnesis, N
name: Kaune, B
name: Killow, C J
name: Korsakova, N
name: Lobo, J A
name: López-Zaragoza, J P
name: Maarschalkerweerd, R
name: Mance, D
name: Martín, V
name: Martin-Polo, L
name: Martin-Porqueras, F
name: Martino, J
name: McNamara, P W
name: Mendes, J
name: Mendes, L
name: Meshksar, N
name: Nofrarias, M
name: Paczkowski, S
name: Perreur-Lloyd, M
name: Petiteau, A
name: Plagnol, E
name: Ramos-Castro, J
name: Reiche, J
name: Rivas, F
name: Robertson, D I
name: Russano, G
name: Sanjuan, J
name: Slutsky, J
name: Sopuerta, C F
name: Sumner, T
name: Tevlin, L
name: Texier, D
name: Thorpe, J I
name: Vetrugno, D
name: Vitale, S
name: Wanner, G
name: Ward, H
name: Wass, P J
name: Weber, W J
name: Wissel, L
name: Wittchen, A
name: Zweifel, P
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a study of the tilt-to-length coupling noise during the LISA Pathfinder mission and how it depended on the system's alignment. Tilt-to-length coupling noise is the unwanted coupling of angular and lateral spacecraft or test mass motion into the primary interferometric displacement readout. It was one of the major noise sources in the LISA Pathfinder mission and is likewise expected to be a primary noise source in LISA. We demonstrate here that a recently derived and published analytical model describes the dependency of the LISA Pathfinder tilt-to-length coupling noise on the alignment of the two freely falling test masses. This was verified with the data taken before and after the realignments performed in March (engineering days) and June 2016, and during a two-day experiment in February 2017 (long cross-talk experiment). The latter was performed with the explicit goal of testing the tilt-to-length coupling noise dependency on the test mass alignment. Using the analytical model, we show that all realignments performed during the mission were only partially successful and explain the reasons why. In addition to the analytical model, we computed another physical tilt-to-length coupling model via a minimising routine making use of the long cross-talk experiment data. A similar approach could prove useful for the LISA mission.
title: Phase Equilibria Simulation of Biomaterial-Hydrogen Binary Systems Using a Simple Empirical Correlation
Creators: name: Faress, Fardad
name: Pourahmad, Afham
name: Abdollahi, Seyyed Amirreza
name: Safari, Mohammad Hossein
name: Mozhdeh, Mozhgan
name: Alobaid, Falah
name: Aghel, Babak
Publisher: name: MDPI
Year: 2023

description: This study proposes a simple correlation for approximating hydrogen solubility in biomaterials as a function of pressure and temperature. The pre-exponential term of the proposed model linearly relates to the pressure, whereas the exponential term is merely a function of temperature. The differential evolution (DE) optimization algorithm helps adjust three unknown coefficients of the correlation. The proposed model estimates 134 literature data points for the hydrogen solubility in biomaterials with an excellent absolute average relative deviation (AARD) of 3.02% and a coefficient of determination (R) of 0.99815. Comparing analysis justifies that the developed correlation has higher accuracy than the multilayer perceptron artificial neural network (MLP-ANN) with the same number of adjustable parameters. Comparing analysis justifies that the Arrhenius-type correlation not only needs lower computational effort, it also has higher accuracy than the PR (Peng-Robinson), PC-SAFT (perturbed-chain statistical associating fluid theory), and SRK (Soave-Redlich-Kwong) equations of state. Modeling results show that hydrogen solubility in the studied biomaterials increases with increasing temperature and pressure. Furthermore, furan and furfuryl alcohol show the maximum and minimum hydrogen absorption capacities, respectively. Such a correlation helps in understanding the biochemical–hydrogen phase equilibria which are necessary to design, optimize, and control biofuel production plants.
Sonnenfleckenzeichnung Nr. 69.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.03.1999, 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): 2.
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: An investigation of the flexion relaxation ratio in adults with a self-reported history of low back pain and transient sitting-induced pain
Creators: name: Mackey, Sarah Charlotte
Publisher: name: Memorial University of Newfoundland
Year: 2022

description: Background: Transient, sitting-induced back pain is commonly reported in response to prolonged sitting. Since pain may confound spine function outcomes, this investigation aimed to determine whether the flexion relaxation ratio (FRR) was affected by sitting-induced pain development or clinical history. Methods: 47 participants, aged 18-69, with (n = 24) and without a history of nonspecific low back pain (n = 23), were exposed to 1-hour of sitting. Perceived pain ratings were taken throughout the trial. Surface electromyography was collected bilaterally over the lumbar erector spinae, and lumbar angle was measured by accelerometers. Participants performed a maximal trunk flexion trial immediately pre/post and the FRR was calculated. Results: There were no significant interactions or differences in the FRR between time (pre/post), clinical history (+/-ve low back pain), or pain development status (pain developer/non-pain developer). Conclusions: 1-hour of sitting-induced pain and a clinical history of low back pain does not appear to induce changes in the motor control of a forward bending task, and in turn, the magnitude of the FRR. Therefore, neither sitting-induced pain or history of low back pain are likely to confound this outcome measure for sitting exposures less than 1- hour.
Continuous data assimilation of large eddy simulation by lattice Boltzmann method and local ensemble transform Kalman filter (LBM-LETKF)
Creators: name: Hasegawa, Yuta
name: Onodera, Naoyuki
name: Asahi, Yuuichi
name: Ina, Takuya
name: Imamura, Toshiyuki
name: Idomura, Yasuhiro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We investigate the applicability of the data assimilation (DA) to large eddy simulations (LESs) based on the lattice Boltzmann method (LBM). We carry out the observing system simulation experiment of a two-dimensional (2D) forced isotropic turbulence, and examine the DA accuracy of the nudging and the local ensemble transform Kalman filter (LETKF) with spatially sparse and noisy observation data of flow fields. The advantage of the LETKF is that it does not require computing spatial interpolation and/or an inverse problem between the macroscopic variables (the density and the pressure) and the velocity distribution function of the LBM, while the nudging introduces additional models for them. The numerical experiments with $256\times256$ grids and $10\%$ observation noise in the velocity showed that the root mean square error of the velocity in the LETKF with $8\times 8$ observation points ($\sim 0.1\%$ of the total grids) and 64 ensemble members becomes smaller than the observation noise, while the nudging requires an order of magnitude larger number of observation points to achieve the same accuracy. Another advantage of the LETKF is that it well keeps the amplitude of the energy spectrum, while only the phase error becomes larger with more sparse observation. We also see that a lack of observation data in the LETKF produces a spurious energy injection in high wavenumber regimes, leading to numerical instability. Such numerical instability is known as the catastrophic filter divergence problem, which can be suppressed by increasing the number of ensemble members. From these results, it was shown that the LETKF enables robust and accurate DA for the 2D LBM with sparse and noisy observation data.
description: 27 pages, 14 figures
Sonnenfleckenzeichnung Nr. 83.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.04.1999, 10:00, 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)
Nadaraya-Watson Estimator for I.I.D. Paths of Diffusion Processes
Creators: name: Marie, Nicolas
name: Rosier, Amélie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This paper deals with a nonparametric Nadaraya-Watson estimator $\hat b$ of the drift function computed from independent continuous observations of a diffusion process. Risk bounds on $\hat b$ and its discrete-time approximation are established. The paper also deals with extensions of the PCO and leave-one-out cross validation bandwidth selection methods for $\hat b$. Finally, some numerical experiments are provided.
description: 40 pages, 6 figures
Sonnenfleckenzeichnung Nr. 281.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.12.1999, 10:45, 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): 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)
The open cluster NGC 7142: interstellar extinction, distance and age
Creators: name: Straizys, V.
name: Maskoliunas, M.
name: Boyle, R. P.
name: Zdanavicius, K.
name: Zdanavicius, J.
name: Laugalys, V.
name: Kazlauskas, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The results of medium-band photometry of 1037 stars in the area of old open cluster NGC 7142 down to V = 20.1 mag in the Vilnius seven-colour system are presented. Photometric results are used to classify in spectral and luminosity classes about 80 percent of stars down to V = 18.5 mag, to identify cluster members, to determine the main cluster parameters and to investigate the interstellar extinction in this direction. The average extinction A_V of the cluster is about 1.1 mag, E(B-V) = 0.35, and its distance is 2.3 kpc (the distance modulus 11.8 mag). The age of the cluster, 3.0 Gyr, is estimated from the intrinsic colour-magnitude diagram with individual dereddening of each star and the Padova isochrones. The surface distribution of the extinction is shown. The reddening of the eclipsing variable V375 Cep is found to be close to the average reddening of the cluster. Probably, the cluster contains five red clump giants, two asymptotic branch stars and four blue stragglers.
description: 8 pages, 6 fugures, full Table 2 online. Bibliographic code 2013MNRAS.tmp2648S, DOI: 10.1093/mnras/stt1995
Examining the justification for the introduction of a fermion localization function
Creators: name: Bulgac, Aurel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Becke and Edgecombe suggested in 1990 a theoretical tool to describe electron localization in atoms and molecules, an idea which was borrowed by a large number of nuclear theorists since 2011 to describe nucleon localization in nuclear systems. I argue here that these arguments are highly questionable and cannot be used in interacting systems, where effects beyond the naive mean field or the simple Hartree-Fock framework are important and the inclusion of correlations induced by particle interactions is necessary in order to introduce such a localization function. I also describe several aspects of the exchange and irreducible 2-body density matrices, which depend on the character and strength of the 2-particle interaction and, which can be useful in justifying the derivation of an appropriate energy density functional.
description: 8 pages, title changed, text and references augmented
Observation of the sling effect
Creators: name: Bewley, Gregory P.
name: Saw, Ewe Wei
name: Bodenschatz, Eberhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: When cloud particles are small enough, they move with the turbulent air in the cloud. On the other hand, as particles become larger their inertia affects their motions, and they move differently than the air. These inertial dynamics impact cloud evolution and ultimately climate prediction, since clouds govern the earth's energy balances. Yet we lack a simple description of the dynamics. Falkovich et al. describes theoretically a new dynamical mechanism called the "sling effect" by which extreme events in the turbulent air cause idealized inertial cloud particles to break free from the airflow (Falkovich G, Fouxon A, Stepanov MG 2002 Nature 419, 151). The sling effect thereafter causes particle trajectories to cross each other within isolated pockets in the flow, which increases the chance of collisions that form larger particles. We combined experimental techniques that allow for precise control of a turbulent flow with three-dimensional tracking of multiple particles at unprecedented resolution. In this way, we could observe both the sling effect and crossing trajectories between real particles. We isolated the inertial sling dynamics from those caused by turbulent advection by conditionally averaging the data. We found the dynamics to be universal in terms of a local Stokes number that quantifies the local particle velocity gradients. We measured the probability density of this quantity, which shows that sharp gradients become more frequent as the global Stokes number increases. We observed that sharp compressive gradients in the airflow initiated the sling effect, and that thereafter gradients in the particle flow ran away and steepened in a way that produced singularities in the flow in finite time. During this process both the fluid motions and gravity became unimportant. The results underpin a framework for describing a crucial aspect of inertial particle dynamics.
description: 13 pages, 4 figures
Efficient quantum simulation of fermionic and bosonic models in trapped ions
Creators: name: Lamata, L.
name: Mezzacapo, A.
name: Casanova, J.
name: Solano, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the efficiency of quantum simulations of fermionic and bosonic models in trapped ions. In particular, we study the optimal time of entangling gates and the required number of total elementary gates. Furthermore, we exemplify these estimations in the light of quantum simulations of quantum field theories, condensed-matter physics, and quantum chemistry. Finally, we show that trapped-ion technologies are a suitable platform for implementing quantum simulations involving interacting fermionic and bosonic modes, paving the way for overcoming classical computers in the near future.
description: 13 pages, 3 figures. Published in EPJ Quantum Technology
Long-range Ising spins models emerging from frustrated Josephson junctions arrays with topological constraints
Creators: name: Neyenhuys, Oliver
name: Fistul, Mikhail V.
name: Eremin, Ilya M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Geometrical frustration in correlated systems can give rise to a plethora of novel ordered states and intriguing phases. Here, we analyze theoretically vertex-sharing frustrated Kagome lattice of Josephson junctions and identify various classical and quantum phases. The frustration is provided by periodically arranged $0$- and $π$- Josephson junctions. In the frustrated regime the macroscopic phases are composed of different patterns of vortex/antivortex penetrating each basic element of the Kagome lattice, i.e., a superconducting triangle interrupted by three Josephson junctions. We obtain that numerous topological constraints, related to the flux quantization in any hexagon loop, lead to highly anisotropic and long-range interaction between well separated vortices (antivortices). Taking into account this interaction and a possibility of macroscopic "tunneling" between vortex and antivortex in single superconducting triangles we derive an effective Ising-type spin Hamiltonian with strongly anisotropic long-range interaction. In the classically frustrated regime we calculate numerically the temperature-dependent spatially averaged spins polarization, $\overline{m}(T)$, characterizing the crossover between the ordered and disordered vortex/antivortex states. In the coherent quantum regime we analyze the lifting of the degeneracy of the ground state and the appearance of the highly entangled states.
description: 12 pages, 10 figures and 2 Appendices. Two figures are added; extended discussions of the classical/quantum regimes in frustrated Kagome lattices (Secs. V, VI and VII) are added
Effects of Electromagnetic Field on the Dynamical Instability of Expansionfree Gravitational Collapse
Creators: name: Sharif, M.
name: Azam, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we discuss the effects of electromagnetic field on the dynamical instability of a spherically symmetric expansionfree gravitational collapse. Darmois junction conditions are formulated by matching interior spherically symmetric spacetime to exterior Reissner-Nordstr$\ddot{o}$m spacetime. We investigate the role of different terms in the dynamical equation at Newtonian and post Newtonian regimes by using perturbation scheme. It is concluded that instability range depends upon pressure anisotropy, radial profile of energy density and electromagnetic field, but not on the adiabatic index $Γ$. In particular, the electromagnetic field reduces the unstable region.
description: 20 pages, no figure
A Discontinuity Capturing Shallow Neural Network for Elliptic Interface Problems
Creators: name: Hu, Wei-Fan
name: Lin, Te-Sheng
name: Lai, Ming-Chih
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper, a new Discontinuity Capturing Shallow Neural Network (DCSNN) for approximating $d$-dimensional piecewise continuous functions and for solving elliptic interface problems is developed. There are three novel features in the present network; namely, (i) jump discontinuities are accurately captured, (ii) it is completely shallow, comprising only one hidden layer, (iii) it is completely mesh-free for solving partial differential equations. The crucial idea here is that a $d$-dimensional piecewise continuous function can be extended to a continuous function defined in $(d+1)$-dimensional space, where the augmented coordinate variable labels the pieces of each sub-domain. We then construct a shallow neural network to express this new function. Since only one hidden layer is employed, the number of training parameters (weights and biases) scales linearly with the dimension and the neurons used in the hidden layer. For solving elliptic interface problems, the network is trained by minimizing the mean square error loss that consists of the residual of the governing equation, boundary condition, and the interface jump conditions. We perform a series of numerical tests to demonstrate the accuracy of the present network. Our DCSNN model is efficient due to only a moderate number of parameters needed to be trained (a few hundred parameters used throughout all numerical examples), and the results indicate good accuracy. Compared with the results obtained by the traditional grid-based immersed interface method (IIM), which is designed particularly for elliptic interface problems, our network model shows a better accuracy than IIM. We conclude by solving a six-dimensional problem to demonstrate the capability of the present network for high-dimensional applications.
Sonnenfleckenzeichnung Nr. 206.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.08.1999, 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)
The Orbit of Warm Jupiter WASP-106 b is aligned with its Star
Creators: name: Harre, Jan-Vincent
name: Smith, Alexis M. S.
name: Hirano, Teruyuki
name: Csizmadia, Szilárd
name: Triaud, Amaury H. M. J.
name: Anderson, David R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Understanding orbital obliquities, or the misalignment angles between a star's rotation axis and the orbital axis of its planets, is crucial for unraveling the mechanisms of planetary formation and migration. In this study, we present an analysis of Rossiter-McLaughlin (RM) observations of the warm Jupiter exoplanet WASP-106 b. The high-precision radial velocity measurements were made with HARPS and HARPS-N during the transit of this planet. We aim to constrain the orientation of the planet's orbit relative to its host star's rotation axis. The RM observations are analyzed using a code which models the RM anomaly together with the Keplerian orbit given several parameters in combination with a Markov chain Monte Carlo implementation. We measure the projected stellar obliquity in the WASP-106 system for the first time and find $λ= (-1 \pm 11)^\circ$, supporting the theory of quiescent migration through the disk.
description: 12 pages, 3 figures, 4 tables, submitted to AAS