cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Remarks on dimensions of Cartesian product sets
Creators: name: Wei, Chun
name: Wen, Shengyou
name: Wen, Zhixiong
Publisher: name: arXiv
Year: 2015
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Given metric spaces $E$ and $F$, it is well known that $$\dim_HE+\dim_HF\leq\dim_H(E\times F)\leq\dim_HE+\dim_PF,$$ $$\dim_HE+\dim_PF\leq \dim_P(E\times F)\leq\dim_PE+\dim_PF,$$ and $$\underline{\dim}_BE+\overline{\dim}_BF \leq\overline{\dim}_B(E\times F) \leq\overline{\dim}_BE+\overline{\dim}_BF,$$ where $\dim_HE$, $\dim_PE$, $\underline{\dim}_BE$, $\overline{\dim}_BE$ denote the Hausdorff, packing, lower box-counting, and upper box-counting dimension of $E$, respectively. In this note we shall provide examples of compact sets showing that the dimension of the product $E\times F$ may attain any of the values permitted by the above inequalities. The proof will be based on a study on dimension of the product of sets defined by digit restrictions.
description: 13 pages
$^{139}$La NMR investigation of the interplay between the lattice, charge, and spin dynamics in charge ordered high $T_c$ cuprate La$_{1.875}$Ba$_{0.125}$CuO$_{4}$
Creators: name: Singer, P. M.
name: Arsenault, A.
name: Imai, T.
name: Fujita, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the interplay between the lattice, charge, and spin dynamics in charge ordered high $T_c$ cuprate La$_{1.875}$Ba$_{0.125}$CuO$_{4}$ ($T_{c} =4$~K) based on the inverse Laplace transform (ILT) analysis of the $^{139}$La nuclear spin-lattice relaxation rate $1/T_1$ (dubbed ILTT$_{1}$ analysis here after). A major thrust of the ILTT$_{1}$ analysis is that one can deduce the probability density function $P(1/T_1)$ of distributed $1/T_1$. We demonstrate that $1/T_{1}^{lm}$, defined as the log-mean (i.e. the center of gravity on a logarithmic scale) of $P(1/T_1)$, can be well approximated by $1/T_{1}^{str}$ deduced from the phenomenological stretched fit, however, $P(1/T_1)$ can provide much richer insight into how the lattice, charge, and spin fluctuations and their distribution develop near and below the long range charge order at $T_{charge} \sim 54$~K. Upon entering the charge ordered state, a divergent increase of $1/T_{1}^{lm}$ toward the spin ordering at $T_{spin}^{μSR} \simeq 35$~K is accompanied by an asymmetric broadening of $P(1/T_1)$. Even deep inside the charge ordered state, $1/T_{1}$ at a gradually diminishing fraction of $^{139}$La sites continues to slow down as temperature is lowered, as expected for canonical superconducting CuO$_2$ planes without enhanced spin fluctuations. The fraction of such canonical $^{139}$La sites almost disappears by $\simeq 40$~K. In contrast, nearly a half of the $^{139}$La sites in La$_{1.885}$Sr$_{0.115}$CuO$_{4}$ ($T_{charge} \simeq 80$~K) still exhibits the canonical behavior without enhanced spin fluctuations even near its $T_{c} = 31$~K. These contrasting behaviors explain why superconductivity in La$_{1.875}$Ba$_{0.125}$CuO$_{4}$ is more strongly suppressed than in La$_{1.885}$Sr$_{0.115}$CuO$_{4}$ despite the lower onset temperature of the charge order.
description: 12 figs
Wie Schüler:innen Modelle als erdachte Welt begreifen lernen
Creators: name: Bachmann, Raffael
name: Voutopoulos, Alexis
name: Amrein, Pascal
name: Bölsterli Bardy, Katrin
Publisher: name: Progress in Science Education (PriSE)
Year: 2023

description: Hintergrund: Die Kompetenz im Umgang mit Modellen ist für den Naturwissenschaftsunterricht zentral. Bei einer unachtsamen Herangehensweise können Lernendenvorstellungen aufgebaut und automatisiert werden, die einem adäquaten Modellverständnis entgegenwirken. Die gängigsten Lernendenvorstellungen entstehen durch den Transfer von lebensweltlichen Eigen-schaften von Stoffen in die Welt der Atome. Des Weiteren ist es wichtig, das Bewusstsein zu fördern, dass ein Modell immer eine Interpretation von Beobachtungen und Messungen ist und somit ein Denkmodell. Obwohl bereits viel in diesem Bereich geforscht wurde, bestehen noch einige Forschungslücken auf der Ebene der Wirksamkeit von einzelnen Aufgaben zum Aufbau eines adäquaten Modellverständnisses. Absicht: Um diese Forschungslücke zu schmälern, wurden in der vorliegenden Masterarbeit im Sinne einer Pilotstudie zwei konkrete Aufgaben zur Einführung eines möglichst adäquaten Modellverständnisses in Form einer Interventionsstudie (N=270) untersucht und miteinander verglichen. Stichprobe: An der explorativen Interventionsstudie haben elf Zentralschweizer Lehrpersonen der Sekundarstufe mit insgesamt 16 Klassen und 270 Schüler:innen teilgenommen. Forschungsdesign und Methode: Für den Vergleich der beiden Aufgaben wurden zwei Interventionsgruppen (Blackbox-Interventionsgruppe und Spuren-Interventionsgruppe) sowie eine Kontrollgruppe gebildet. Die Interventionsstudie wurde nach dem Prä-, Post-, Follow-Up-Design durchgeführt. Resultate: Die Ergebnisse der vorliegenden Untersuchung weisen darauf hin, dass der Lernzuwachs bei den Schüler:innen durch die Blackbox (BB)- Intervention höher ist als durch die Spuren (SP)- Intervention (p<.001, d>0.81). Schlussfolgerung: Die explorative Studie deutet mit ersten Resultaten darauf hin, dass der BB-Ansatz im Unterricht vielversprechend ist. Jedoch führt auch der SP-Ansatz zu einem Lernzuwachs. Zukünftige Forschung könnte in Form einer breit angelegten mehrebenen-analytischen Studie dieser Frage vertieft nachgehen und weitere Fragen, wie z.B. Genderaspekte, klären. Schlüsselwörter: Blackbox, Spuren, Tricky Tracks, Denkmodell, Science Education, Nature of Science, de-natured Science, Atommodell
description: Progress in Science Education (PriSE), Vol. 5 No. 1 (2022): Special Issue: Tasks in Science Education
Coherent spin control at the quantum level in an ensemble-based optical memory
Creators: name: Jobez, Pierre
name: Laplane, Cyril
name: Timoney, Nuala
name: Gisin, Nicolas
name: Ferrier, Alban
name: Goldner, Philippe
name: Afzelius, Mikael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Long-lived quantum memories are essential components of a long-standing goal of remote distribution of entanglement in quantum networks. These can be realized by storing the quantum states of light as single-spin excitations in atomic ensembles. However, spin states are often subjected to different dephasing processes that limit the storage time, which in principle could be overcome using spin-echo techniques. Theoretical studies have suggested this to be challenging due to unavoidable spontaneous emission noise in ensemble-based quantum memories. Here we demonstrate spin-echo manipulation of a mean spin excitation of 1 in a large solid-state ensemble, generated through storage of a weak optical pulse. After a storage time of about 1 ms we optically read out the spin excitation with a high signal-to-noise ratio. Our results pave the way for long-duration optical quantum storage using spin-echo techniques for any ensemble-based memory.
description: 5 pages, 2 figures, 1 table
The Epidermal Growth Factor Receptor (EGFR) Inhibitor Gefitinib Reduces but Does Not Prevent Tumorigenesis in Chemical and Hormonal Induced Hepatocarcinogenesis Rat Models
Creators: name: Ribback, Silvia
name: Sailer, V.
name: Böhning, E.
name: Utpatel, Kirsten
name: Evert, Matthias
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: HUMAN HEPATOCELLULAR-CARCINOMA; PANCREATIC-ISLET TRANSPLANTS; TYROSINE KINASE INHIBITOR; DIABETIC-RATS; SIGNALING PATHWAYS; METABOLIC-CHANGES; INSULIN-RECEPTOR; CANCER-CELLS; FACTOR-ALPHA; LIVER; hepatocarcinogenesis; intraportal transplantation; epidermal growth factor receptor (EGFR); Gefitinib
subject: 610 Medizin

description: Activation of the epidermal growth factor receptor (EGFR) signaling pathway promotes the development of hepatocellular adenoma (HCA) and carcinoma (HCC). The selective EGFR inhibitor Gefitinib was found to prevent hepatocarcinogenesis in rat cirrhotic livers. Thus, Gefitinib might reduce progression of pre-neoplastic liver lesions to HCC. In short-and long-term experiments, administration of N-Nitrosomorpholine (NNM) or intrahepatic transplantation of pancreatic islets in diabetic (PTx), thyroid follicles in thyroidectomized (TTx) and ovarian fragments in ovariectomized (OTx) rats was conducted for the induction of foci of altered hepatocytes (FAH). Gefitinib was administered for two weeks (20 mg/kg) or three and nine months (10 mg/kg). In NNM-treated rats, Gefitinib administration decreased the amount of FAH when compared to controls. The amount of HCA and HCC was decreased, but development was not prevented. Upon all transplantation models, proliferative activity of FAH was lower after administration of Gefitinib in short-term experiments. Nevertheless, the burden of HCA and HCC was not changed in later stages. Thus, EGFR inhibition by Gefitinib diminishes chemical and hormonal also induced hepatocarcinogenesis in the initiation stage in the non-cirrhotic liver. However, progression to malignant hepatocellular tumors was not prevented, indicating only a limited relevance of the EGFR signaling cascade in later stages of hepatocarcinogenesis.
Development of a tool for corrosion prediction in reinforced concrete structures
Creators: name: Claude, Paulo
name: Duprat, Frédéric
name: De Larrard, Thomas
name: Mai-Nhu, Jonathan
name: Rougeau, Patrick
name: Marracci, Louis
name: Guedon, Pascal
name: Schneider, Léo
Publisher: name: Academic Journal of Civil Engineering
Year: 2023

description: This article details the operation of a predictive tool for corrosion initiation and propagation in reinforced concrete. Its use is intended for managers and project owners and constitutes a decision-making tool regarding maintenance and repair operations. The developed application consists of a graphical interface developed in Python that allows the user simplified access to various (numerical and analytical) models for estimating the durability of reinforced concrete. The phenomena of carbonation, chloride ion penetration, and associated corrosion propagation are considered. Different mathematical methods allow the user to estimate the various input parameters of the models based solely on the knowledge of the concrete formulation and its environment. Finally, a probabilistic approach (FORM) can be implemented for all the models and allows for the estimation of various values such as the probability of depassivation. A case study on two reinforced concrete bridges is carried out as an example.
description: Academic Journal of Civil Engineering, Vol 41 No 4 (2023): Special Issue - Diagnobéton 2023
Determining the Mass of Kepler-78b With Nonparametric Gaussian Process Estimation
Creators: name: Grunblatt, Samuel K.
name: Howard, Andrew W.
name: Haywood, Raphaëlle D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Kepler-78b is a transiting planet that is 1.2 times the radius of Earth and orbits a young, active K dwarf every 8 hours. The mass of Kepler-78b has been independently reported by two teams based on radial velocity measurements using the HIRES and HARPS-N spectrographs. Due to the active nature of the host star, a stellar activity model is required to distinguish and isolate the planetary signal in radial velocity data. Whereas previous studies tested parametric stellar activity models, we modeled this system using nonparametric Gaussian process (GP) regression. We produced a GP regression of relevant Kepler photometry. We then use the posterior parameter distribution for our photometric fit as a prior for our simultaneous GP + Keplerian orbit models of the radial velocity datasets. We tested three simple kernel functions for our GP regressions. Based on a Bayesian likelihood analysis, we selected a quasi-periodic kernel model with GP hyperparameters coupled between the two RV datasets, giving a Doppler amplitude of 1.86 $\pm$ 0.25 m s$^{-1}$ and supporting our belief that the correlated noise we are modeling is astrophysical. The corresponding mass of 1.87 $^{+0.27}_{-0.26}$ M$_{\oplus}$ is consistent with that measured in previous studies, and more robust due to our nonparametric signal estimation. Based on our mass and the radius measurement from transit photometry, Kepler-78b has a bulk density of 6.0$^{+1.9}_{-1.4}$ g cm$^{-3}$. We estimate that Kepler-78b is 32$\pm$26% iron using a two-component rock-iron model. This is consistent with an Earth-like composition, with uncertainty spanning Moon-like to Mercury-like compositions.
description: 10 pages, 5 figures, accepted to ApJ 6/16/2015
Toward a thermo-hydrodynamic like description of Schrodinger equation via the Madelung formulation and Fisher information
Creators: name: Heifetz, Eyal
name: Cohen, Eliahu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We revisit the analogy suggested by Madelung between a non-relativistic time-dependent quantum particle, to a fluid system which is pseudo-barotropic, irrotational and inviscid. We first discuss the hydrodynamical properties of the Madelung description in general, and extract a pressure like term from the Bohm potential. We show that the existence of a pressure gradient force in the fluid description does not violate Ehrenfest's theorem since its expectation value is zero. We also point out that incompressibility of the fluid implies conservation of density along a fluid parcel trajectory and in 1D this immediately results in the non-spreading property of wave packets, as the sum of Bohm potential and an exterior potential must be either constant or linear in space. Next we relate to the hydrodynamic description a thermodynamic counterpart, taking the classical behavior of an adiabatic barotopric flow as a reference. We show that while the Bohm potential is not a positive definite quantity, as is expected from internal energy, its expectation value is proportional to the Fisher information whose integrand is positive definite. Moreover, this integrand is exactly equal to half of the square of the imaginary part of the momentum, as the integrand of the kinetic energy is equal to half of the square of the real part of the momentum. This suggests a relation between the Fisher information and the thermodynamic like internal energy of the Madelung fluid. Furthermore, it provides a physical linkage between the inverse of the Fisher information and the measure of disorder in quantum systems - in spontaneous adiabatic gas expansion the amount of disorder increases while the internal energy decreases.
description: 11 pages. V.3 includes a minor revision. Accepted for publication in Foundations of Physics
Approche basée sur l'apprentissage automatique pour la détection d'anomalies lors de la surveillance d'ouvrages
Creators: name: Manzini, Nicolas
name: Schmidt, Franziska
name: Bercher, Jean-François
name: Orcesi, André
name: Marchand, Pierre
name: Gazeaux, Julien
Publisher: name: Academic Journal of Civil Engineering
Year: 2023

description: L'un des principaux objectifs de la surveillance de santé structurale (SHM) est de détecter, et éventuellement localiser, quantifier ou prédire les dommages sur les structures. Sans connaissances détaillées du comportement mécanique structurel, l'analyse des données est une tâche complexe, et la surveillance opérationnelle est souvent limitée à l'utilisation de seuils plus ou moins arbitraires. Les approches data-driven qui reposent sur une analyse statistique des données, ont suscité un intérêt croissant ces deux dernières décennies. Cet article propose une approche basée sur plusieurs modèles automatisés construits par apprentissage automatique, pour la détection et la localisation des anomalies dans les données de surveillance d'un grand pont en béton. Pour chaque capteur, plusieurs modèles de régression sont générés à l’aide de réseaux de neurones récurrents en utilisant les données d'autres capteurs déployés sur la structure. Les anomalies sont ensuite identifiées dans le jeu de données en fonction des résidus entre les sorties des modèles et les données mesurées in situ. Pour un capteur donné, les résidus de tous les modèles sont ensuite compilés pour produire un indicateur d'anomalie.
description: Academic Journal of Civil Engineering, Vol 41 No 4 (2023): Special Issue - Diagnobéton 2023
Web Scraping for a Database of Court Decision Related Documents
Creators: name: Schürmann, Alec
Publisher: name: Zenodo
Year: 2022

description: Reports of Swiss court rulings are anonymous to protect the privacy of involved subjects. The Swiss national research project ”Open Justice vs. Privacy” strives to automate re-identification of anonymous reports of court rulings using natural language processing. The achievement of this goal requires a database of court decision related documents. So far, despite the increasing amount and availability of data, no data sets of external documents related to Swiss federal court rulings have been collected and processed. This research project aims to provide a database of court decision related documents from five promising online data sources. In a second step, the sources were analyzed and the documents along with the metadata provided were scraped. After being structured in a JavaScript Object Notation (JSON) format, the results were analyzed in the context of the overarching research project and quantitatively evaluated by examining the text similarity of the resulting data and the court rulings.
SAR-Aware Beamforming Optimization in Active IRS-aided MISO Broadcasting for SWIPT
Creators: name: Ntougias, Konstantinos
name: Krikidis, Ioannis
Publisher: name: Zenodo
Year: 2022

description: This paper considers a multiple-input single-output (MISO) broadcasting system for simultaneous wireless information and power transfer (SWIPT), wherein an active intelligent reflecting surface (IRS) assists the access point (AP) in wireless information/power transfer to the physically separated information/ energy receivers (IR/ER). We aim at jointly optimizing the transmit and reflect beamforming (TB/RB) weights, such that the weighted sum power at the ERs is maximized subject to the quality-of-service requirements of the IRs, the transmit sum-power constraints of the AP and the IRS, and the specific absorption rate (SAR) restrictions imposed on the former. We develop an alternating optimization algorithm that makes use of the semi-definite relaxation (SDR) method to efficiently tackle this challenging non-convex optimization problem. We prove that no energy beams are required and derive the SDR tightness condition of the TB optimization sub-problem. Numerical simulations demonstrate the superior performance of the active IRS over its passive counterpart, unveil the performance gains of the proposed design over baseline schemes, and provide valuable insights.
COMPARISON OF SPATIAL INTERPOLATION METHODS FOR ATMOSPHERIC CARBON MONITORING
Creators: name: Casey, Philip
Publisher: name: Digital Repository at the University of Maryland
Year: 2022
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: Kriging
subject: Spatial Statistics
subject: Statistics

description: Spatial interpolation is an important tool for prediction of unobserved points in space in the earth and environmental sciences. Three methods for spatial interpolation were atmospheric compared. The first two methods are ordinary kriging and Empirical Bayesian Kriging (EBK). The third method is the Bayesian Transformed Gaussian (BTG) model. The three methods are applied to remotely sensed satellite data of atmospheric carbon dioxide (XCO2) provided by NASA’s Orbiting Carbon Observatory (OCO-2) mission. Cross validation on the data shows that the methods are close in terms of mean squared error (MSE) when applied to XCO2 data.
Facilitating RCD Community Success
Creators: name: Brunson, Dana
name: Middelkoop, Timothy
name: Hicks, John
Publisher: name: Zenodo
Year: 2023

description: Internet2 is committed to supporting the research computing and data (RCD) community through a range of services and programs. This session will focus on Internet2's work in research engagement and facilitation, including efforts to support the RCD community in leveraging Internet2's offerings effectively.
The session will cover Internet2's work in collaboration and community engagement with RCD professionals and researchers, including initiatives such as the Internet2-led NSF Cyberinfrastructure Center of Excellence pilot RCD Nexus that supports the Campus Research Computing Consortium (CaRCC); the Minority-Serving Cyberinfrastructure Consortium (MS-CC), the National Research Platform (NRP), and the Ecosystem for Research Networking (ERN). The presentation will discuss best practices in RCD workforce development and  institutional capabilities assessment, as well as strategies for measuring impact and communicating strategic priorities to stakeholders.
Participants will have the opportunity to learn about Internet2's latest initiatives in RCD engagement, exchange ideas and experiences with other professionals, and explore ways to leverage Internet2's resources to advance research and innovation in their own institutions.
title: Carbonate complexation enhances hydrothermal transport of rare earth elements in alkaline fluids
Creators: name: Louvel, Marion
name: Etschmann, Barbara
name: Guan, Qiushi
name: Testemale, Denis
name: Brugger, Joël
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 550 Earth sciences

description: Rare earth elements (REE), essential metals for the transition to a zero-emission economy, are mostly extracted from REE-fluorcarbonate minerals in deposits associated with carbonatitic and/or peralkaline magmatism. While the role of high-temperature fluids (100 < T < 500 °C) in the development of economic concentrations of REE is well-established, the mechanisms of element transport, ore precipitation, and light (L)REE/heavy (H)REE fractionation remain a matter of debate. Here, we provide direct evidence from in-situ X-ray Absorption Spectroscopy (XAS) that the formation of hydroxyl-carbonate complexes in alkaline fluids enhances hydrothermal mobilization of LREE at T ≥ 400 °C and HREE at T ≤ 200 °C, even in the presence of fluorine. These results not only reveal that the modes of REE transport in alkaline fluids differ fundamentally from those in acidic fluids, but further underline that alkaline fluids may be key to the mineralization of hydrothermal REE-fluorcarbonates by promoting the simultaneous transport of (L)REE, fluoride and carbonate, especially in carbonatitic systems.
description: Finanziert über die DEAL-Vereinbarung mit Wiley 2019-2022.
Assessment of the U and Co magnetic moments in UCoGe by X-ray magnetic circular dichroism
Creators: name: Taupin, M.
name: Brison, J. -P.
name: Aoki, D.
name: Lapertot, G.
name: Sanchez, J. -P.
name: Wilhelm, F.
name: Rogalev, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ferromagnetic superconductor UCoGe has been investigated by high field X-ray magnetic circular dichroism (XMCD) at the U-M$_{4,5}$ and Co/Ge-K edges. The analysis of the branching ratio and XMCD at the U-M$_{4,5}$ edges reveals that the U-5$f$ electrons count is close to 3. The orbital ($\sim0.70\,μ_B$) and spin ($\sim-0.30\,μ_B$) moments of U at 2.1K and 17T (H//c) have been determined. Their ratio ($\sim-2.3$) suggests a significant delocalization of the 5$f$ electron states. The similar field dependences of the local U/Co and the macroscopic magnetization indicate that the Co moment is induced by the U moment. The XMCD at the Co/Ge-K edges reveal the presence of small Co-4$p$ and Ge-4$p$ orbital moments parallel to the macroscopic magnetization. In addition, the Co-3$d$ moment is estimated to be at most of the order of 0.1$μ_B$ at 17T. Our results rule out the possibility of an unusual polarisability of the U and Co moments as well as their antiparallel coupling. We conclude that the magnetism which mediates the superconductivity in UCoGe is driven by U.
description: 4 figures + supplementary material
Вопросы устойчивого развития общества,Выпуск 5 мксв 2023
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2023

description: Вопросы устойчивого развития общества,Выпуск 5 мксв 2023
Variable selection for model-based clustering using the integrated complete-data likelihood
Creators: name: Matthieu, Marbac
name: Mohammed, Sedki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62H30, 62F15, 62-07, 62F07

description: Variable selection in cluster analysis is important yet challenging. It can be achieved by regularization methods, which realize a trade-off between the clustering accuracy and the number of selected variables by using a lasso-type penalty. However, the calibration of the penalty term can suffer from criticisms. Model selection methods are an efficient alternative, yet they require a difficult optimization of an information criterion which involves combinatorial problems. First, most of these optimization algorithms are based on a suboptimal procedure (e.g. stepwise method). Second, the algorithms are often greedy because they need multiple calls of EM algorithms. Here we propose to use a new information criterion based on the integrated complete-data likelihood. It does not require any estimate and its maximization is simple and computationally efficient. The original contribution of our approach is to perform the model selection without requiring any parameter estimation. Then, parameter inference is needed only for the unique selected model. This approach is used for the variable selection of a Gaussian mixture model with conditional independence assumption. The numerical experiments on simulated and benchmark datasets show that the proposed method often outperforms two classical approaches for variable selection.
description: submitted to Statistics and Computing
Cold imprint of supervoids in the Cosmic Microwave Background re-considered with Planck and BOSS DR10
Creators: name: Kovács, András
name: Granett, Benjamin R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyze publicly available void catalogs of the Baryon Oscillation Spectroscopic Survey Data Release 10 at redshifts $0.465~Mpc/h$ that does match in terms of amplitude and number of structures the Granett et al. observation, although at different void positions.
description: 9 pages, 7 figures, accepted for publication in MNRAS
MISO Broadcasting for SWIPT with Batteryless Receivers and Battery-Constrained Self-Sustainable IRS
Creators: name: Ntougias, Konstantinos
name: Krikidis, Ioannis
Publisher: name: Zenodo
Year: 2022

description: This paper considers a multiple-input single-output broadcasting system for simultaneous wireless information and power transfer (SWIPT) with batteryless user terminals (UT) which is aided by a self-sustainable intelligent reflecting surface (IRS). The UTs and the battery-powered IRS employ the time switching (TS) or the power splitting (PS) scheme. The various combinations of these SWIPT protocols result in different system operation modes. Considering a nonlinear energy harvesting (EH) model, we aim at jointly optimizing in each mode the transmit and reflect beamforming vectors, along with the TS or/and PS ratios, such that the transmit sum-power is minimized subject to the quality-of-service requirements of the UTs, the EH requirements of the IRS, and its battery's capacity. We formulate, whenever required, corresponding multi-objective optimization problems and convert them into equivalent single-objective optimization problems using the epsilon-constraint method. We develop iterative algorithms under the alternating minimization or block coordinate descent frameworks that utilize the semi-definite relaxation, inner approximation, and successive convex approximation methods, along with low-complexity heuristics or/and line search, to efficiently tackle the challenging non-convex optimization problems under study. Numerical simulation results highlight the performance gains of the proposed resource allocation strategies over baseline techniques and provide valuable insights. 
Energy dependence of slope parameter in elastic nucleon-nucleon scattering
Creators: name: Okorokov, V. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The study of slope parameter is presented for elastic proton-proton and antiproton-proton scattering with taking into account the resent experimental data at high energies. The expanded logarithmic approximations allow the description of the experimental slopes in all available energy range reasonably. Accounting for the LHC results leads to the dramatic change of behavior of the quadratic in logarithm approximation at high energies and to the closer trends for all fitting functions under study in comparison with the analysis at collision energies up to the 200 GeV. The estimations of the asymptotic shrinkage parameter $α'_{\cal{P}}$ are discussed. Predictions for diffraction slope parameter are obtained for some proton-proton and antiproton-proton facilities.
description: 15 pages, 4 figures, 11 tables. This paper is the development of the preceding analysis arXiv: 0907.0951. arXiv admin note: text overlap with arXiv:0907.0951
The Initial State of a Primordial Anisotropic Stage of Inflation
Creators: name: Blanco-Pillado, Jose J.
name: Minamitsuji, Masato
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the possibility that the inflationary period in the early universe was preceded by a primordial stage of strong anisotropy. In particular we focus on the simplest model of this kind, where the spacetime is described by a non-singular Kasner solution that quickly evolves into an isotropic de Sitter space, the so-called Kasner-de Sitter solution. The initial Big Bang singularity is replaced, in this case, by a horizon. We show that the extension of this metric to the region behind the horizon contains a timelike singularity which will be visible by cosmological observers. This makes it impossible to have a reliable prediction of the quantum state of the cosmological perturbations in the region of interest. In this paper we consider the possibility that this Kasner-de Sitter universe is obtained as a result of a quantum tunneling process effectively substituting the region behind the horizon by an anisotropic parent vacuum state, namely a $1+1$ dimensional spacetime compactified over an internal flat torus, $T_2$, which we take it to be of the form ${de Sitter}_2 \times T_2$ or ${Minkowski}_2 \times T_2$. As a first approximation to understand the effects of this anisotropic initial state, we compute the power spectrum of a massless scalar field in these backgrounds. In both cases, the spectrum converges at small scales to the isotropic scale invariant form and only present important deviations from it at the largest possible scales. We find that the decompactification scenario from $M_2 \times T_2$ leads to a suppressed and slightly anisotropic power spectrum at large scales which could be related to some of the anomalies present in the current CMB data. On the other hand, the spectrum of the universe with a $dS_2 \times T_2$ parent vacuum presents an enhancement in power at large scales not consistent with observations.
description: 36 pages, 7 figures, references added
Cost-effectiveness analysis of iStent Inject® implantation during cataract surgery compared to cataract surgery alone for mild to moderate open-angle glaucoma patients in Spain
Creators: name: Teus, Miguel A
name: Belda, Jose I
name: Lavín, Cosme
name: GarcÃ­a-FeijoÃ, Julián
name: Falvey, H
name: Buseghin, Giorgio
name: Soler, María
name: Appierto, Marilena
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: To estimate the cost-effectiveness of two trabecular micro-bypass stent implants (iStent inject®) during cataract surgery, compared to cataract surgery alone, in patients with cataracts and mild-to-moderate primary Open Angle Glaucoma (OAG) in the Spanish National Health System (SNHS). A Markov model was used to simulate the progression of OAG patients, undergoing either cataract-iStent Inject® surgery or cataract surgery alone, over a lifetime horizon. Health states of glaucoma were based on the Hodapp-Parrish-Anderson criteria. Efficacy and resource use were obtained from published literature and validated by experts. Costs (€, 2020) were obtained from the Spanish database eSalud. The incremental cost-effectiveness ratio (ICER) expressed as cost per quality-adjusted life-year (QALY) gained was calculated. A societal perspective was also explored. Sensitivity analysis tested the robustness of results. Cataract-iStent Inject® surgery was more effective and costly than cataract surgery alone, with an ICER of 12,676.48/QALY. The probability of iStent Inject being cost-effective was 90.9% and 78.4%, at a willingness-to-pay of €30,000/QALY and €21,000/QALY, respectively. From a societal perspective, Cataract-iStent Inject® surgery was cost-saving compared to cataract surgery alone. Cataract-iStent Inject® surgery was cost-effective (SNHS perspective) or cost-saving (societal perspective) compared to cataract surgery alone in patients with mild-to-moderate OAG.
Coherent frequency up-conversion of microwaves to the optical telecommunications band in an Er:YSO crystal
Creators: name: Fernandez-Gonzalvo, Xavier
name: Chen, Yu-Hui
name: Yin, Chunming
name: Rogge, Sven
name: Longdell, Jevon J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The ability to convert quantum states from microwave photons to optical photons is important for hybrid system approaches to quantum information processing. In this paper we report the up-conversion of a microwave signal into the optical telecommunications wavelength band using erbium dopants in a yttrium orthosilicate crystal via stimulated Raman scattering. The microwaves were applied to the sample using a 3D copper loop-gap resonator and the coupling and signal optical fields were single passed. The conversion efficiency was low, in agreement with a theoretical analysis, but can be significantly enhanced with an optical resonator.
Guardrail
Creators: name: Galvez, Madeline Yahaira
Publisher: name: Digital Repository at the University of Maryland
Year: 2022
Subjects: subject: Creative writing
subject: English literature

description: Guardrail is a collection of poems that aim to explore the mental landscape of a person who has lost their God and yearns for the divine amidst their gradual development of a mental disorder. Told in a single section, we journey through the speaker’s tenderness, obsessions, and small sorrows both present and past. The collection takes love, intergenerational trauma, and loss as its central themes, and though we are introduced to various relationships throughout, return continuously to the central bond between that of mother and daughter. These poems hope to capture moments, both fleeting and monumental, on the journey back to self, back to God, back to love.
Two-Sample Testing for Tail Copulas with an Application to Equity Indices
Creators: name: Can, Sami Umut
name: Einmahl, John H.J.
name: Laeven, Roger J.A.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: A novel, general two-sample hypothesis testing procedure is established for testing the equality of tail copulas associated with bivariate data. More precisely, using a martingale transformation of a natural two-sample tail copula process, a test process is constructed, which is shown to converge in distribution to a standard Wiener process. Hence, from this test process a myriad of asymptotically distribution-free two-sample tests can be obtained. The good finite-sample behavior of our procedure is demonstrated through Monte Carlo simulations. Using the new testing procedure, no evidence of a difference in the respective tail copulas is found for pairs of negative daily log-returns of equity indices during and after the global financial crisis.
Template-space metric for searches for gravitational waves from the inspiral, merger and ringdown of binary black holes
Creators: name: Kalaghatgi, Chinmay
name: Ajith, Parameswaran
name: Arun, K. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Searches for gravitational waves (GWs) from binary black holes using interferometric GW detectors require the construction of template banks for performing matched filtering while analyzing the data. Placement of templates over the parameter space of binaries, as well as coincidence tests of GW triggers from multiple detectors make use of the definition of a metric over the space of gravitational waveforms. Although recent searches have employed waveform templates coherently describing the inspiral, merger and ringdown (IMR) of the coalescence, the metric used in the template banks and coincidence tests was derived from post-Newtonian inspiral waveforms. In this paper, we compute the template-space metric of the IMR waveform family IMRPhenomB over the parameter space of masses and the effective spin parameter. We also propose a coordinate system, which is a modified version of post-Newtonian chirp time coordinates, in which the metric is slowly varying over the parameter space. The match function analytically computed using the metric has excellent agreement with the "exact" match function computed numerically. We show that the metric is able to provide a reasonable approximation to the match function of other IMR waveform families, such that the effective-one-body model calibrated to numerical relativity (EOBNRv2). The availability of this metric can contribute to improving the sensitivity of searches for GWs from binary black holes in the advanced detector era.
description: 8 pages, 4 figures Minor Changes, version as appears in Physical Review D 91 (124042 (2015))
Vincenzio Chiarugi: agricoltura, ambiente e medicina nell'opera di un Georgofilo. Spunti per un percorso di ricerca e risorse in rete / Daniele Vergari, Davide Fiorino
Creators: name: Vergari, Daniele
name: Fiorino, Davide
Publisher: name: Zenodo
Year: 2023
Subjects: Accademia dei Georgofili
Vincenzo (Vincenzio) Chiarugi
Storia dell'agricoltura
Toscana
History of agriculture
Tuscany
History of science
Empoli

description: Testo originale della Mostra virtuale: Vincenzio Chiarugi: agricoltura, ambiente e medicina nell’opera di un Georgofilo. Spunti per un percorso di ricerca e risorse in rete. Natura: risorsa elettronica. Consistenza: 6 p.
description: Digitalizzato come parte della mostra virtuale: Vincenzio Chiarugi: agricoltura, ambiente e medicina nell'opera di un Georgofilo. Spunti per un percorso di ricerca e risorse in rete. https://www.georgofili.it/contenuti/vincenzio-chiarugi-agricoltura-ambiente-e-medicina-nellopera-di-un-georgofilo-spunti-per-un-percorso/8188
Climate Arctic Governance: Perspectives on sub-national data-driven policymaking
Creators: name: Tkach Pavel
Publisher: name: Zenodo
Year: 2022
Subjects: Data-drvien sub-national policy-making, Climate, Arctic regions, governmental processes

description: Presentation of the member of the University of Lapland team working in the WP7 - Pavel Tkach at Climate Arctic Governance conference in Copenhagen that took place on September 16, 2022, about aspects of Arctic regional climate governance information and knowledge about which the author took from his work in the Arctic PASSION project and subsequent communication with the policymakers.
Анонімна анкета про готовність викладати Педагогіку здоров'я
Creators: name: Шевченко О.С.
name: Штефан Л.В.
Publisher: name: Zenodo
Year: 2019
Subjects: Педагогика здоровья
анонимная анкета

description: Анкета призначена для проведення анонімного опитування серед спеціалістів із медичною освітою, які навчаються в Українській інженерно-педагогічній академії. Анкету розроблено фахівцями Харківського Регіонального Інституту Проблем Громадської Охорони Здоров'я та Української інженерно-педагогічної академії (м. Харків). Опитування присвячене новій валеологічній дисципліні Педагогіка здоров'я. Вивчаються питання мотивації медичних працівників займатися медичною освітою (стати викладачами Педагогіки здоров'я) для профілактики реалізації керованих факторів ризику соціально значущих хвороб та формування здорового способу життя серед студентів закладів вищої освіти немедичного профілю.
From the Lab to People's Home: Lessons from Accessing Blind Participants' Interactions via Smart Glasses in Remote Studies
Creators: name: Lee, Kyungjun
name: Hong, Jonggi
name: Jarjue, Ebrima
name: Mensah, Ernest Essuah
name: Kacorri, Hernisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Researchers have adopted remote methods, such as online surveys and video conferencing, to overcome challenges in conducting in-person usability testing, such as participation, user representation, and safety. However, remote user evaluation on hardware testbeds is limited, especially for blind participants, as such methods restrict access to observations of user interactions. We employ smart glasses in usability testing with blind people and share our lessons from a case study conducted in blind participants' homes (N=12), where the experimenter can access participants' activities via dual video conferencing: a third-person view via a laptop camera and a first-person view via smart glasses worn by the participant. We show that smart glasses hold potential for observing participants' interactions with smartphone testbeds remotely; on average 58.7% of the interactions were fully captured via the first-person view compared to 3.7% via the third-person. However, this gain is not uniform across participants as it is susceptible to head movements orienting the ear towards a sound source, which highlights the need for a more inclusive camera form factor. We also share our lessons learned when it comes to dealing with lack of screen reader support in smart glasses, a rapidly draining battery, and Internet connectivity in remote studies with blind participants.
description: to be published in the proceedings of the 19th International Web for All Conference (Web4All 2022)
Differences between quantity- and quality-based measures of SRL in task-based student interviews
Creators: name: Aeschlimann, Franziska
name: Iten, Glena
name: Hielscher, Michael
name: Prasse, Doreen
Publisher: name: Zenodo
Year: 2022
Subjects: SRL
interviews
primary-school
metacognition

description: In our study in 21 primary-school classes, we tested whether students receiving digital metacognitive prompts from a software-based support system (Learn2Learn-Assistant) during a digitally supported learning unit show increased SRL-activities in a transfer task. We conducted video-based interviews with 42 students before and after the intervention and assessed the frequency of cognitive and metacognitive activities described by students while solving a task. Results show no significant differences in the pure frequency of reported activities between the experimental and the control group. However, results from our qualitative interview analysis also suggest that quality rather than pure quantity of the described activities might better capture differences in students SRL. Therefore, we are now developing a rating system which aims to also measure the quality of descriptions during the task-based interview and will test differences between students SRL in the experimental and control group. Implications for measuring and interpreting SRL in a task-based interview are deduced.
Constraints and tensions in testing general relativity from Planck and CFHTLenS including intrinsic alignment systematics
Creators: name: Dossett, Jason N.
name: Ishak, Mustapha
name: Parkinson, David
name: Davis, Tamara M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present constraints on testing general relativity (GR) at cosmological scales using recent data sets and assess the impact of galaxy intrinsic alignment (IA) in the CFHTLenS lensing data on those constraints. We consider CMB temperature data from Planck, the galaxy power spectrum from WiggleZ, weak lensing tomography from the CFHTLenS, ISW-galaxy cross correlations, and BAO data from 6dF, SDSS DR7, and BOSS DR9. We use a parameterization of the modified gravity (MG) that is binned in redshift and scale, a parameterization that evolves monotonically in scale but is binned in redshift, and a functional parameterization that evolves only in redshift. We present the results in terms of the MG parameters $Q$ and $Σ$. We employ an IA model with an amplitude $A_{CFHTLenS}$ that is included in the parameter analysis. We find an improvement in the constraints on the MG parameters corresponding to $40-53\%$ increase on the figure of merit compared to previous studies, and GR is found consistent with the data at the $95\%$ CL. The bounds found on $A_{CFHTLenS}$ are sensitive to the MG parameterization used, and the correlations between $A_{CFHTLenS}$ and MG parameters are found to be weak to moderate. For all 3 MG parameterizations $A_{\rm CFHTLenS}$ is found consistent with zero when the whole lensing sample is used, however, when using the optimized early-type galaxy sample a significantly non-zero $A_{\rm CFHTLenS}$ is found for GR and the third MG parameterization. We find that the tensions observed in previous studies persist, and there is an indication that CMB data and lensing data prefer different values for MG parameters, particularly for the parameter $Σ$. The analysis of the confidence contours and probability distributions suggest that the bimodality found follows that of the known tension in the $σ_8$ parameter. (Abridged)
description: 14 pages, 7 figures, matches version to appear in PRD
Spectroscopic Starspot Filling Factor Measurements with APOGEE
Creators: name: Cao, Lyra
name: Pinsonneault, Marc
Publisher: name: Zenodo
Year: 2023
Subjects: starspots
magnetism
activity
stellar evolution

description: We present a large sample (~135,000) of two-temperature star spot filling factor measurements for the intersection of APOGEE DR17 and Gaia DR3 on the lower main sequence. These infrared spectroscopic starspot detections are tied to the intrinsic activity of the star and its dynamo. We show the existence of a Rossby scaling comparable to that for other activity diagnostics, and that large star spot filling factors are the norm and not the exception for active stars. We demonstrate that including star spots at the level seen in the data leads to more accurate stellar parameters in the era of precision stellar astrophysics, with strong shifts in derived effective temperature, radius, and age. This work has broad applications as it makes starspot measurements accessible for a large fraction of the sky, with immediate applications in stellar parameter estimation and exoplanet characterization/habitability.
description: Supported by NASA grant 80NSSC19K0597