cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Self-injection-locked optical parametric oscillator based on microcombs
Creators: name: Lei, Fuchuan
name: Sun, Yi
name: Helgason, Óskar B.
name: Ye, Zhichao
name: Gao, Yan
name: Karlsson, Magnus
name: Andrekson, Peter A
name: Torres-Company, Victor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Narrow-linewidth yet tunable laser oscillators are one of the most important tools for precision metrology, optical atomic clocks, sensing and quantum computing. Commonly used tunable coherent oscillators are based on stimulated emission or stimulated Brillouin scattering; as a result, the operating wavelength band is limited by the gain media. Based on nonlinear optical gain, optical parametric oscillators (OPOs) enable coherent signal generation within the whole transparency window of the medium used. However, the demonstration of OPO-based Hertz-level linewidth and tunable oscillators has remained elusive. Here, we present a tunable coherent oscillator based on a multimode coherent OPO in a high-Q microresonator, i.e., a microcomb. Single-mode coherent oscillation is realized through self-injection locking (SIL) of one selected comb line. We achieve coarse tuning up to 20 nm, and an intrinsic linewidth down to sub-Hertz level, which is three orders of magnitude lower than the pump. Furthermore, we demonstrate that this scheme results into repetition rate stabilization of the microcomb. These results open exciting possibilities for generating tunable coherent radiation where stimulated emission materials are difficult to obtain, and the stabilization of microcomb sources beyond the limits imposed by the thermorefractive noise in the cavity.
The normal Casimir force for lateral moving planes with isotropic conductivities
Creators: name: Emelianova, N.
name: Khusnutdinov, N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the two planes at zero temperature with isotropic conductivity that are in relative lateral motion with velocity $v$ and inter-plane distance $a$. Two models of conductivity are taken into account -- the constant and frequency-dependent Drude models. The normal (perpendicular to planes) Casimir force is analysed in detail for two systems -- i) two planes with identical conductivity and ii) one of the planes is a perfect metal. The velocity correction to the Casimir energy $Δ_v\mathcal{E} \sim v^2$ for small velocity for all considered cases. In the case of the constant conductivity $η$, the energy correction is $ Δ_v\mathcal{E} \sim \fracη{a^3} \left(\frac{v}η\right)^2$for $v\ll η\ll 1$.
description: 15 pages
Justifying your SEM
Creators: name: Simon, Patricia D.
name: Fryer, Luke K.
name: Shum, Alex
name: Edelsbrunner, Peter
name: Dumas, Denis
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Educational Psychology
subject: Education
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This is a protocol for a systematic review of the applied SEM literature in educational psychology. We will cover the period 2022-2023, and review studies from two top educational psychology journals, Journal of Educational Psychology and Learning and Instruction. The systematic review will focus on a central element of good practice in structural equation modelling: Justifying one’s measurement model, covariates, predictive relationships, and model amendments. In addition, the review will evaluate whether researchers using SEM and whether they actually derive practical educational implications from their models. Each of the steps in developing and conducting SEM are critical to establishing model validity and replicability, essential to the long-term health of the field, and important if practical implications are to be drawn.
Additional file 1 of A peripheral neutrophil-related inflammatory factor predicts a decline in executive function in mild Alzheimer’s disease
Creators: name: Bawa, Kritleen K.
name: Krance, Saffire H.
name: Herrmann, Nathan
name: Cogo-Moreira, Hugo
name: Ouk, Michael
name: Yu, Di
name: Wu, Che-Yuan
name: Black, Sandra E.
name: Lanctôt, Krista L.
name: Swardfager, Walter
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplementary Table 1. 95% Confidence Intervals for standardized estimates (β) in model predicting change in executive function over one year
Bayesian Stokes inversion with Normalizing flows
Creators: name: Baso, C. J. Díaz
name: Ramos, A. Asensio
name: Rodríguez, J. de la Cruz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Stokes inversion techniques are very powerful methods for obtaining information on the thermodynamic and magnetic properties of solar and stellar atmospheres. In recent years, very sophisticated inversion codes have been developed that are now routinely applied to spectro-polarimetric observations. Most of these inversion codes are designed for finding an optimum solution to the nonlinear inverse problem. However, to obtain the location of potentially multimodal cases (ambiguities), the degeneracies, and the uncertainties of each parameter inferred from the inversions, algorithms such as Markov chain Monte Carlo (MCMC), require to evaluate the likelihood of the model thousand of times and are computationally costly. Variational methods are a quick alternative to Monte Carlo methods by approximating the posterior distribution by a parametrized distribution. In this study, we introduce a highly flexible variational inference method to perform fast Bayesian inference, known as normalizing flows. Normalizing flows are a set of invertible, differentiable, and parametric transformations that convert a simple distribution into an approximation of any other complex distribution. If the transformations are conditioned on observations, the normalizing flows can be trained to return Bayesian posterior probability estimates for any observation. We illustrate the ability of the method using a simple Milne-Eddington model and a complex non-LTE inversion. However, the method is extremely general and other more complex forward models can be applied. The training procedure need only be performed once for a given prior parameter space and the resulting network can then generate samples describing the posterior distribution several orders of magnitude faster than existing techniques.
description: 11 pages, 7 figures, accepted for publication in A&A
Constraints on millisecond magnetars as the engines of prompt emission in gamma-ray bursts
Creators: name: Beniamini, Paz
name: Giannios, Dimitrios
name: Metzger, Brian D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine millisecond magnetars as central engines of Gamma Ray Bursts' (GRB) prompt emission. Using the proto-magnetar wind model of Metzger et al. 2011, we estimate the temporal evolution of the magnetization and power injection at the base of the GRB jet and apply these to different prompt emission models to make predictions for the GRB energetics, spectra and lightcurves. We investigate both shock and magnetic reconnection models for the particle acceleration, as well as the effects of energy dissipation across optically thick and thin regions of the jet. The magnetization at the base of the jet, $σ_0$, is the main parameter driving the GRB evolution in the magnetar model and the emission is typically released for $100\lesssim σ_0 \lesssim 3000$. Given the rapid increase in $σ_0$ as the proto-magnetar cools and its neutrino-driven mass loss subsides, the GRB duration is typically limited to $\lesssim 100$ s. This low baryon loading at late times challenges magnetar models for ultra-long GRBs, though black hole models likely run into similar difficulties without substantial entrainment from the jet walls. The maximum radiated gamma-ray energy is $\lesssim 5 \times 10^{51}$erg, significantly less than the magnetar's total initial rotational energy and in strong tension with the high end of the observed GRB energy distribution. However, the gradual magnetic dissipation model (Beniamini & Giannios 2017) applied to a magnetar central engine, naturally explains several key observables of typical GRBs, including energetics, durations, stable peak energies, spectral slopes and a hard to soft evolution during the burst.
description: 19 pages, 13 figures, published in MNRAS
Real-Fake: Effective Training Data Synthesis Through Distribution Matching
Creators: name: Yuan, Jianhao
name: Zhang, Jie
name: Sun, Shuyang
name: Torr, Philip
name: Zhao, Bo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Synthetic training data has gained prominence in numerous learning tasks and scenarios, offering advantages such as dataset augmentation, generalization evaluation, and privacy preservation. Despite these benefits, the efficiency of synthetic data generated by current methodologies remains inferior when training advanced deep models exclusively, limiting its practical utility. To address this challenge, we analyze the principles underlying training data synthesis for supervised learning and elucidate a principled theoretical framework from the distribution-matching perspective that explicates the mechanisms governing synthesis efficacy. Through extensive experiments, we demonstrate the effectiveness of our synthetic data across diverse image classification tasks, both as a replacement for and augmentation to real datasets, while also benefits such as out-of-distribution generalization, privacy preservation, and scalability. Specifically, we achieve 70.9% top1 classification accuracy on ImageNet1K when training solely with synthetic data equivalent to 1 X the original real data size, which increases to 76.0% when scaling up to 10 X synthetic data.
description: Code released at (https://github.com/BAAI-DCAI/Training-Data-Synthesis)
Additional file 2: of Candidate SNP markers of reproductive potential are predicted by a significant change in the affinity of TATA-binding protein for human gene promoters
Creators: name: Chadaeva, Irina
name: Ponomarenko, Petr
name: Rasskazov, Dmitry
name: Sharypova, Ekaterina
name: Kashina, Elena
name: Zhechev, Dmitry
name: Drachkova, Irina
name: Arkova, Olga
name: Savinkova, Ludmila
name: Ponomarenko, Mikhail
name: Kolchanov, Nikolay
name: Osadchuk, Ludmila
name: Osadchuk, Alexandr
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Supplementary method. Keyword search in the PubMed database. (PDF 221 kb)
title: ADCO, Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Cart. 172 (11 H 69), 115 folios, f. 0068
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Archives départementales de la Côte-d'Or, Cart. 172 (11 H 69), 115 folios, f. 0068, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Archives départementales de la Côte-d'Or, Cart. 172 (11 H 69), 115 folios, f. 0068, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Dynamics of Topological Excitations in a Model Quantum Spin Ice
Creators: name: Huang, Chun-Jiong
name: Deng, Youjin
name: Wan, Yuan
name: Meng, Zi Yang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the quantum spin dynamics of a frustrated XXZ model on a pyrochlore lattice by using large-scale quantum Monte Carlo simulation and stochastic analytic continuation. In the low-temperature quantum spin ice regime, we observe signatures of coherent photon and spinon excitations in the dynamic spin structure factor. As the temperature rises to the classical spin ice regime, the photon disappears from the dynamic spin structure factor, whereas the dynamics of the spinon remain coherent in a broad temperature window. Our results provide experimentally relevant, quantitative information for the ongoing pursuit of quantum spin ice materials.
description: 10 pages, 5 figures
A critical appraisal of the singularity theorems
Creators: name: Senovilla, José M. M.
Publisher: name: arXiv
Year: 2021
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: The 2020 Nobel prize in Physics has revived the interest in the singularity theorems and, in particular, in the Penrose theorem published in 1965. In this short paper I briefly review the main ideas behind the theorems and then proceed to an evaluation of their hypotheses and implications. I will try to dispel some common misconceptions about the theorems and their conclusions, as well as to convey some of their rarely mentioned consequences. In particular, a discussion of spacetime extensions in relation to the theorems is provided. The nature of the singularity inside black holes is also analyzed.
description: 15 pages, 4 figures. Invited review for the Theme issue "The future of mathematical cosmology" , submitted to Phil. Trans. A
Heterotic String Model Building with Monad Bundles and Reinforcement Learning
Creators: name: Constantin, Andrei
name: Harvey, Thomas R.
name: Lukas, Andre
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We use reinforcement learning as a means of constructing string compactifications with prescribed properties. Specifically, we study heterotic SO(10) GUT models on Calabi-Yau three-folds with monad bundles, in search of phenomenologically promising examples. Due to the vast number of bundles and the sparseness of viable choices, methods based on systematic scanning are not suitable for this class of models. By focusing on two specific manifolds with Picard numbers two and three, we show that reinforcement learning can be used successfully to explore monad bundles. Training can be accomplished with minimal computing resources and leads to highly efficient policy networks. They produce phenomenologically promising states for nearly 100% of episodes and within a small number of steps. In this way, hundreds of new candidate standard models are found.
description: 35 pages, 9 figures, data set of models included as ancillary material in the submission
Lettre de Jean-François Séguier à Guillaume Dubois de Rochefort,
Creators: name: Séguier, Jean-François
name: Jean-François Séguier
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Vie académique

description: [transcription] [Brouillon de Séguier]

Monsieur, qu'il aurait été flatteur pour moi de me voir associé à vos travaux dans l'Académie ou tenez une place si distinguée. Les témoignages que vous me donnez du désir que quelques académiciens ont marqué de [ratures] plus particulièrement à eux n'est qu'un effet de leur bonté et en particulier de celle de Monsieur Duclos qui m'a témoigné dans cette occasion la marque la plus précieuse de son souvenir. Je vous prie de l'en remercier de même que tous les académiciens qui ont pensé tout comme lui et dont vous m'avez laissé ignorer les noms. Me voici dans l'impossibilité de les remercier et de leur témoigner les sentiments de ma reconnaissance. Le mérite de la personne que l'académie a élue va justifier son choix et j'applaudis avec tout le public à cette marque de distinction qu'elle lui a donné. Je suis attaché à Monsieur de Burigny. Le neveu d'un savant si distingué méritait bien que l'on en fit lacquisition. Vous savez Monsieur la loi que l'académie s'est imposée pour donner une place si distinguée et le mérite supérieur qu'il faut avoir pour y parvenir. Vous connaissez tout ce qui me manque pour y aspirer, content de tâcher d'imiter ces grands modèles. Je ne suis pas si présomptueux de pouvoir les atteindre. Je ne me rends pas assez de justice pour me borner dans ma petite sphère et tâcher de me conserver dans le souvenir de quelques amis qui m'honorent de leur estime. Vous êtes, Monsieur, un de ceux qui me sont les plus chers.
description: [personnes citées] Jean Levêque de Burigny, Jean-Simon Lévêque de Pouilly
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 147_17, fol. 178 bis r
description: Source: ark:/12148/btv1b100153052
description: created: 0000-00-00
title: ePortfolios im Weiterbildungsstudiengang Cross Media der Hochschule Magdeburg-Stendal
Creators: name: Fredrich, Helge
Publisher: name: Otto von Guericke University Library, Magdeburg, Germany
Year: 2017
Subjects: ePortfolio
Weiterbildung
E-Learning
Cross Media

description: Das vorliegende Dokument ist im Rahmen des vom Bundesministerium für Bildung und Forschung (BMBF) geförderten Forschungsprojektes „Weiterbildungscampus“ der Otto-von-Guericke-Universität und der Hochschule Magdeburg-Stendal entstanden.  Es beinhaltet eine Darstellung des Einsatzes von ePortfolios im Weiterbildungsstudiengang MA Cross Media an der Hochschule Magdeburg-Stendal und basiert im Wesentlichen auf der Grundlage von Gesprächen mit und Dokumenten von Herrn Stockleben, der dieses Instrument im Studiengang eingeführt hat. Weitere Gespräche wurden mit der Leiterin der Studiengangsberatung Frau von Bonin und der Verantwortlichen für IT und Systeme Frau Spohr geführt.  Dieses Dokument soll im Teilprojekt Studierfähigkeit unter der Verantwortung von Frau Prof. Merkt einen Beitrag zur Bearbeitung der Forschungsfragen leisten.
Additional file 1: Figure S1. of Acidic Peptizing Agent Effect on Anatase-Rutile Ratio and Photocatalytic Performance of TiO2 Nanoparticles
Creators: name: Mahmoud, Hatem
name: Katabathini Narasimharao
name: Ali, Tarek
name: Khalil, Kamal
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: The plots represent the relation between E and (K*E)0.5 for three samples. Figure S2. UV-vis absorption changes of aqueous solution of different organic compounds at 25 °C in the presence of TiO2-ace sample. Figure S3. UV-vis absorption changes of aqueous solution of different organic compounds at 25 °C in the presence of TiO2-nit sample. Figure S4. UV-vis absorption changes of aqueous solution of different organic compounds at 25 °C in the presence of TiO2-sul sample. Calculation of the theoretical photocurrent in TiO2 nanoparticles. (DOCX 768 kb)
6D Fractional Quantum Hall Effect
Creators: name: Heckman, Jonathan J.
name: Tizzano, Luigi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a 6D generalization of the fractional quantum Hall effect involving membranes coupled to a three-form potential in the presence of a large background four-form flux. The low energy physics is governed by a bulk 7D topological field theory of abelian three-form potentials with a single derivative Chern-Simons-like action coupled to a 6D anti-chiral theory of Euclidean effective strings. We derive the fractional conductivity, and explain how continued fractions which figure prominently in the classification of 6D superconformal field theories correspond to a hierarchy of excited states. Using methods from conformal field theory we also compute the analog of the Laughlin wavefunction. Compactification of the 7D theory provides a uniform perspective on various lower-dimensional gapped systems coupled to boundary degrees of freedom. We also show that a supersymmetric version of the 7D theory embeds in M-theory, and can be decoupled from gravity. Encouraged by this, we present a conjecture in which IIB string theory is an edge mode of a 10+2-dimensional bulk topological theory, thus placing all twelve dimensions of F-theory on a physical footing.
description: v2: 47 pages, 5 figures, clarifications and references added
Librations of a body composed of a deformable mantle and a fluid core
Creators: name: Ragazzo, Clodoaldo
name: Boué, Gwenaël
name: Gevorgyan, Yeva
name: Ruiz, Lucas S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present fully three-dimensional equations to describe the rotations of a body made of a deformable mantle and a fluid core. The model in its essence is similar to that used by INPOP (Integration Planétaire de l'Observatoire de Paris), e.g. Viswanathan et al. (2019), and by JPL (Jet Propulsion Laboratory), e.g. Folkner et al. (2014), to represent the Moon. The intended advantages of our model are: straightforward use of any linear-viscoelastic model for the rheology of the mantle; easy numerical implementation in time-domain (no time lags are necessary); all parameters, including those related to the "permanent deformation", have a physical interpretation. The paper also contains: 1) A physical model to explain the usual lack of hydrostaticity of the mantle (permanent deformation). 2) Formulas for free librations of bodies in and out-of spin-orbit resonance that are valid for any linear viscoelastic rheology of the mantle. 3) Formulas for the offset between the mantle and the idealized rigid-body motion (Peale's Cassini states). 4) Applications to the librations of Moon, Earth, and Mercury that are used for model validation.
description: 92 pages, 15 figures
Multi-objective Contextual Multi-armed Bandit with a Dominant Objective
Creators: name: Tekin, Cem
name: Turgay, Eralp
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we propose a new multi-objective contextual multi-armed bandit (MAB) problem with two objectives, where one of the objectives dominates the other objective. Unlike single-objective MAB problems in which the learner obtains a random scalar reward for each arm it selects, in the proposed problem, the learner obtains a random reward vector, where each component of the reward vector corresponds to one of the objectives and the distribution of the reward depends on the context that is provided to the learner at the beginning of each round. We call this problem contextual multi-armed bandit with a dominant objective (CMAB-DO). In CMAB-DO, the goal of the learner is to maximize its total reward in the non-dominant objective while ensuring that it maximizes its total reward in the dominant objective. In this case, the optimal arm given a context is the one that maximizes the expected reward in the non-dominant objective among all arms that maximize the expected reward in the dominant objective. First, we show that the optimal arm lies in the Pareto front. Then, we propose the multi-objective contextual multi-armed bandit algorithm (MOC-MAB), and define two performance measures: the 2-dimensional (2D) regret and the Pareto regret. We show that both the 2D regret and the Pareto regret of MOC-MAB are sublinear in the number of rounds. We also compare the performance of the proposed algorithm with other state-of-the-art methods in synthetic and real-world datasets. The proposed model and the algorithm have a wide range of real-world applications that involve multiple and possibly conflicting objectives ranging from wireless communication to medical diagnosis and recommender systems.
description: To appear in IEEE Transactions on Signal Processing, link: https://ieeexplore.ieee.org/document/8368272/
Die Nutzung generativer künstlicher Intelligenz bei Marketing- und Kommunikationsfachleuten
Creators: name: Mohr, Seraina
name: Stutz, Nadine
name: Griesser, Simone
name: Rast, Vinzenz
name: Zeder, Raphael
Publisher: name: Zenodo
Year: 2023
Subjects: Generative künstliche Intelligenz
Studienergebnisse
Marketing und Kommunikation

description: Generative KI (GKI) hat das Potenzial, die Art und Weise, wie wir arbeiten und kommunizieren, zu revolutionieren. Die Befragung des Instituts für Kommunikation und Marketing der Hochschule Luzern Wirtschaft zielt darauf ab, die Anwendungsfälle, Chancen und Risiken im Zusammenhang mit GKI in Kommunikation und Marketing zu untersuchen. Im Februar und März 2023 wurde eine Stichprobe von 208 Kommunikations- und Marketingfachleuten gebeten, Anwendungsfälle, Chancen und Risiken zu bewerten, die GKI in Kommunikation und Marketing eröffnet.
description: + ID der Publikation: hslu_101807 + Art des Beitrages: Keynote an Praxisveranstaltung + Veranstalter: HSLU + Sprache: Deutsch + Letzte Aktualisierung: 2024-10-28 10:33:53
About the ability of agnostic X-ray tests of the Kerr Hypothesis to discover new physics
Creators: name: Zhao, Shuaitongze
name: Riaz, Shafqat
name: Bambi, Cosimo
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the past decade, we have seen an unprecedented progress in our ability of testing general relativity in the strong field regime with black hole observations. Most studies have focused on the so-called tests of the Kerr hypothesis: they have tried to verify whether the spacetime geometry around black holes is described by the Kerr solution as expected in general relativity. One can follow either a theory-specific analysis or an agnostic approach. Each strategy has its advantages and disadvantages. In this work, we study the ability of agnostic X-ray tests of the Kerr hypothesis to discover new physics. We simulate X-ray observations of bright Galactic black holes of specific theories of gravity and we analyze the simulated data with a reflection model employing the correct theory of gravity and another reflection model for agnostic tests of the Kerr hypothesis. Our results suggest that agnostic X-ray tests are valid tools to discover new physics, but their constraining power may be lower than a theory-specific analysis.
description: 12 pages, 5 figures. v2: refereed version
Probing Flat Band Physics in Spin Ice Systems via Polarized Neutron Scattering
Creators: name: Chung, Kristian Tyn Kai
name: Goh, Jeremy Swee Kang
name: Mukherjee, Aritro
name: Jin, Wen
name: Lozano-Gómez, Daniel
name: Gingras, Michel J. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, we illustrate how polarized neutron scattering can be used to isolate the spin-spin correlations of modes forming flat bands in a frustrated magnetic system hosting a classical spin liquid phase. In particular, we explain why the nearest-neighbor spin ice model, whose interaction matrix has two flat bands, produces a dispersionless (i.e. "flat") response in the non-spin-flip (NSF) polarized neutron scattering channel, and demonstrate that NSF scattering is a highly sensitive probe of correlations induced by weak perturbations which lift the flat band degeneracy. We use this to explain the experimentally measured dispersive (i.e. non-flat) NSF channel of the dipolar spin ice compound $\mathrm{Ho}_2 \mathrm{Ti}_2 \mathrm{O}_7$.
description: 6+18 pages, 3+10 figures
Additional file 2 of A peripheral neutrophil-related inflammatory factor predicts a decline in executive function in mild Alzheimer’s disease
Creators: name: Bawa, Kritleen K.
name: Krance, Saffire H.
name: Herrmann, Nathan
name: Cogo-Moreira, Hugo
name: Ouk, Michael
name: Yu, Di
name: Wu, Che-Yuan
name: Black, Sandra E.
name: Lanctôt, Krista L.
name: Swardfager, Walter
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 2: Supplementary Table 2. 95% Confidence Intervals for standardized estimates (β) in model predicting change in memory over one year
Theory of melting lines
Creators: name: Trachenko, K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Our understanding of the three basic states of matter (solids, liquids and gases) is based on temperature and pressure phase diagrams with three phase transition lines: solid-gas, liquid-gas and solid-liquid lines. There are analytical expressions $P(T)$ for the first two lines derived on a purely general-theoretical thermodynamic basis. In contrast, there exists no similar function for the third, melting, line (ML). Here, we develop a general two-phase theory of MLs and their analytical form. This theory predicts the parabolic form of the MLs for normal melting, relates the MLs to thermal and elastic properties of liquid and solid phases and quantitatively agrees with experimental MLs in different system types. We show that the parameters of the ML parabola are governed by fundamental physical constants. In this sense, parabolic MLs possess universality across different systems.
description: minor additions and closer to the journal version
Photo- and electroproduction of $Λ(1405)$ via $γ^{(*)}p\to K^+π^+Σ^-$
Creators: name: Nam, Seung-il
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we perform a \textit{toy-model} analysis for the unpolarized photo- and electroproduction of $Λ(1405)\equivΛ^*$ via $γ^{(*)}p\to K^+π^+Σ^-$ by employing the effective Lagrangian approach at the tree level only. We consider that $Λ^*$ consists of the high-mass ($H$) and low-mass ($L$) poles as suggested by the chiral unitary model (ChUM). We determine all the model parameters including coupling constants and cutoff parameters for the phenomenological strong form factors by using the theoretical information from ChUM and available experimental data. The electromagnetic (EM) form factors for the two poles are parameterized appropriately being similar to that for the neutron by employing the ChUM estimates for the EM root-mean-squared (rms) radii for the two poles. We observe from the numerical calculations that, for the photoproduction of $Λ^*$, the interference between the two poles turns out to be destructive, resulting in the single-peak line at $M_{π^+Σ^-}\approx1405$ MeV in the invariant-mass distribution. On the contrary, there appear two peaks in the distribution for the electroproduction as observed in the CLAS/Jlab electroproduction data, due to the constructive interference, which is mainly caused by the Dirac form factors for the two poles. From this observation, we conclude that, in order to explain the photo- and electroproduction data simultaneously, i.e., \textit{single} and \textit{double} peaks, respectively, in the invariant-mass distribution, the interference patterns for the two poles should follow those suggested by ChUM. In turn, it is a strong theoretical and experimental supports for the two-pole structure scenario for $Λ^*$.
description: 11 pages, 10 figures, accepted for publication via PRD
Many-body strategies for multi-qubit gates - quantum control through Krawtchouk chain dynamics
Creators: name: Groenland, Koen
name: Schoutens, Kareljan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a strategy for engineering multi-qubit quantum gates. As a first step, it employs an eigengate to map states in the computational basis to eigenstates of a suitable many-body Hamiltonian. The second step employs resonant driving to enforce a transition between a single pair of eigenstates, leaving all others unchanged. The procedure is completed by mapping back to the computational basis. We demonstrate the strategy for the case of a linear array with an even number N of qubits, with specific XX+YY couplings between nearest neighbors. For this so-called Krawtchouk chain, a 2-body driving term leads to the iSWAP$_N$ gate, which we numerically test for N = 4 and 6.
description: 10 pages, 3 figures
Black Hole in Discrete Gravity
Creators: name: Chamseddine, Ali H.
name: Malaeb, Ola
name: Najem, Sara
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the metric corresponding to a three-dimensional coset space $SO(4)/SO(3)$ in the lattice setting. With the use of three integers $n_1, n_2$, and $n_3$, and a length scale, $l_μ$, the continuous metric is transformed into a discrete space. The numerical outcomes are compared with the continuous ones. The singularity of the black hole is explored and different domains are studied.
Classifying Exoplanets with Gaussian Mixture Model
Creators: name: Kulkarni, Soham
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Recently, Odrzywolek and Rafelski (arXiv:1612.03556) have found three distinct categories of exoplanets, when they are classified based on density. We first carry out a similar classification of exoplanets according to their density using the Gaussian Mixture Model, followed by information theoretic criterion (AIC and BIC) to determine the optimum number of components. Such a one-dimensional classification favors two components using AIC and three using BIC, but the statistical significance from both the tests is not significant enough to decisively pick the best model between two and three components. We then extend this GMM-based classification to two dimensions by using both the density and the Earth similarity index (arXiv:1702.03678), which is a measure of how similar each planet is compared to the Earth. For this two-dimensional classification, both AIC and BIC provide decisive evidence in favor of three components.
description: 8 pages, 7 figures
Methods and Conversations in (Post)Modern Thermodynamics
Creators: name: Avanzini, Francesco
name: Bilancioni, Massimo
name: Cavina, Vasco
name: Cengio, Sara Dal
name: Esposito, Massimiliano
name: Falasco, Gianmaria
name: Forastiere, Danilo
name: Freitas, Nahuel
name: Garilli, Alberto
name: Harunari, Pedro E.
name: Lecomte, Vivien
name: Lazarescu, Alexandre
name: Srinivas, Shesha G. Marehalli
name: Moslonka, Charles
name: Neri, Izaak
name: Penocchio, Emanuele
name: Piñeros, William D.
name: Polettini, Matteo
name: Raghu, Adarsh
name: Raux, Paul
name: Sekimoto, Ken
name: Soret, Ariane
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Lecture notes after the doctoral school (Post)Modern Thermodynamics held at the University of Luxembourg, December 2022, 5-7, covering and advancing continuous-time Markov chains, network theory, stochastic thermodynamics, large deviations, deterministic and stochastic chemical reaction networks, metastability, martingales, quantum thermodynamics, and foundational issues.
description: Submission to SciPost
Additional file 1: of Candidate SNP markers of reproductive potential are predicted by a significant change in the affinity of TATA-binding protein for human gene promoters
Creators: name: Chadaeva, Irina
name: Ponomarenko, Petr
name: Rasskazov, Dmitry
name: Sharypova, Ekaterina
name: Kashina, Elena
name: Zhechev, Dmitry
name: Drachkova, Irina
name: Arkova, Olga
name: Savinkova, Ludmila
name: Ponomarenko, Mikhail
name: Kolchanov, Nikolay
name: Osadchuk, Ludmila
name: Osadchuk, Alexandr
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Supplementary method. A sequence-based statistical estimate of the SNP-caused alteration in the affinity of TATA box binding protein (TBP) for the human gene promoter containing this SNP within its region [-70; -20]. (PDF 220 kb)
Near horizon linearized gravity and soft theorem
Creators: name: Mao, Pujian
name: Zhang, Kai-Yu
name: Zhou, Bochen
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: In this paper, we study the linearized gravity theory in the near horizon region of the Schwarzschild black hole in four dimensional spacetime. Under the Newman-Unti gauge, we derive the most general near horizon symmetry and solution space without any near horizon fall-off condition. There are four towers of surface charges that are generic functions on the horizon associated to the near horizon symmetry. With suitable near horizon fall-off conditions, we reveal a soft graviton theorem from the Ward identity of the near horizon supertranslation in both coordinates space and momentum space.
description: v2: two remarks added, new refs added
title: ADCO, Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Cart. 29 (G 134), 996 folios, f. 0470
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0470, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0470, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Nucleon decay in a minimal non-SUSY GUT with predicted quark-lepton Yukawa ratios
Creators: name: Antusch, Stefan
name: Hinze, Kevin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the predictions for various nucleon decay rates and their ratios in non-supersymmetric SU(5) Grand Unified Theories (GUTs) where the masses of the third and second family down-type quarks and charged leptons each stem dominantly from single GUT operators. Extending the Georgi-Glashow SU(5) model by a 45-dimensional GUT-Higgs representation, the gauge couplings can meet at the high scale $M_\mathrm{GUT}$ and the GUT scale predictions $y_τ/y_b = 3/2$ and $y_μ/y_s = 9/2$ can emerge within single operator dominance. Explaining the observed neutrino masses via the type I seesaw mechanism by adding SU(5) singlet fermion representations and taking their renormalization group effects into account, we show that these predictions can lead to viable low scale second and third family down-type quark and charged lepton masses. To investigate nucleon decay predictions, we extend the minimal scenario to two "toy models" towards explaining quark and lepton masses and mixings with different flavor structure, and perform Markov Chain Monte Carlo (MCMC) analyses confronting the models with the available experimental data. We show that if several nucleon decay channels are observed, the ratios between their partial decay rates can serve as "fingerprints", allowing to separate between GUT models with different flavor structure.
description: 34 pages, 10 figures, 4 tables
Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis
Creators: name: Towne, Aaron
name: Schmidt, Oliver T.
name: Colonius, Tim
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider the frequency domain form of proper orthogonal decomposition (POD) called spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space-time POD problem for statistically stationary flows and leads to modes that each oscillate at a single frequency. This form of POD goes back to the original work of Lumley (Stochastic tools in turbulence, Academic Press, 1970), but has been overshadowed by a space-only form of POD since the 1990s. We clarify the relationship between these two forms of POD and show that SPOD modes represent structures that evolve coherently in space and time while space-only POD modes in general do not. We also establish a relationship between SPOD and dynamic mode decomposition (DMD); we show that SPOD modes are in fact optimally averaged DMD modes obtained from an ensemble DMD problem for stationary flows. Accordingly, SPOD modes represent structures that are dynamic in the same sense as DMD modes but also optimally account for the statistical variability of turbulent flows. Finally, we establish a connection between SPOD and resolvent analysis. The key observation is that the resolvent-mode expansion coefficients must be regarded as statistical quantities to ensure convergent approximations of the flow statistics. When the expansion coefficients are uncorrelated, we show that SPOD and resolvent modes are identical. Our theoretical results and the overall utility of SPOD are demonstrated using two example problems: the complex Ginzburg-Landau equation and a turbulent jet.
Detecting Relevant Information in High-Volume Chat Logs: Keyphrase Extraction for Grooming and Drug Dealing Forensic Analysis
Creators: name: Alves, Jeovane Honório
name: Pedroso, Horácio A. C. G.
name: Venetikides, Rafael Honorio
name: Köster, Joel E. M.
name: Grochocki, Luiz Rodrigo
name: Freitas, Cinthia O. A.
name: Barddal, Jean Paul
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The growing use of digital communication platforms has given rise to various criminal activities, such as grooming and drug dealing, which pose significant challenges to law enforcement and forensic experts. This paper presents a supervised keyphrase extraction approach to detect relevant information in high-volume chat logs involving grooming and drug dealing for forensic analysis. The proposed method, JointKPE++, builds upon the JointKPE keyphrase extractor by employing improvements to handle longer texts effectively. We evaluate JointKPE++ using BERT-based pre-trained models on grooming and drug dealing datasets, including BERT, RoBERTa, SpanBERT, and BERTimbau. The results show significant improvements over traditional approaches and demonstrate the potential for JointKPE++ to aid forensic experts in efficiently detecting keyphrases related to criminal activities.
description: Accepted for presentation at the 22nd IEEE International Conference on Machine Learning and Applications (ICMLA) 2023
Simultaneously unveiling the EBL and intrinsic spectral parameters of gamma-ray sources with Hamiltonian Monte Carlo
Creators: name: Genaro, M.
name: Pereira, L. A. Stuani
name: Pimentel, D. R. de Matos
name: Santos, E. Moura
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Extragalactic Background Light (EBL) is the main radiation field responsible for attenuating extragalactic gamma-ray emission at very high energies, but its precise spectral intensity is not fully determined. Therefore, disentangling propagation effects from the intrinsic spectral properties of gamma-ray sources (such as active galactic nuclei, AGN) is the primary challenge to interpreting observations of these objects. We present a Bayesian and Markov Chain Monte Carlo approach to simultaneously infer parameters characterizing the EBL and the intrinsic spectra in a combined fit of a set of sources, which has the advantage of easily incorporating the uncertainties of both sets of parameters into one another through marginalization of the posterior distribution. Taking a sample of synthetic blazars observed by the ideal CTA configuration, we study the effects on the EBL constraints of combining multiple observations and varying their exposure. We also apply the methodology to a set of 65 gamma-ray spectra of 36 different AGNs measured by current Imaging Atmospheric Cherenkov Telescopes, using Hamiltonian Monte Carlo as a solution to the difficult task of sampling in spaces with a high number of parameters. We find robust constraints in the mid-IR region while simultaneously obtaining intrinsic spectral parameters for all of these objects. In particular, we identify Markarian 501 (Mkn 501) flare data (HEGRA/1997) as essential for constraining the EBL above 30$μ$m.
description: 41 pages, 19 figures; added information in section 2.2