cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hadron Propagation in Medium: the Exclusive Process A(e,e'p)B in Few-Nucleon Systems
Creators: name: Atti, C. Ciofi degli
name: Kaptari, L. P.
name: Morita, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The mechanism of propagation of hadronic states in the medium is a key point for understanding particle-nucleus and nucleus-nucleus scattering at high energies. We have investigated the propagation of a baryon in the exclusive process A(e,e'p)B in few-nucleon systems using realistic nuclear wave functions and Glauber multiple scattering theory both in its original form and within a generalized eikonal approximation. New results for the processes 3He(e,e'p)2H and 4He(e,e'p)3H are compared with data recently obtained at the Thomas Jefferson Laboratory (JLAB).
description: 8 pages, 9 figures, Presented at the Fifth International Conference on Perspectives in Hadronic Physics -Particle-Nucleus and Nucleus-Nucleus Scattering at Relativistic Energies-, 22 - 26 May 2006, Trieste, Italy
Representation Learning For Speech Recognition Using Feedback Based Relevance Weighting
Creators: name: Agrawal, Purvi
name: Ganapathy, Sriram
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this work, we propose an acoustic embedding based approach for representation learning in speech recognition. The proposed approach involves two stages comprising of acoustic filterbank learning from raw waveform, followed by modulation filterbank learning. In each stage, a relevance weighting operation is employed that acts as a feature selection module. In particular, the relevance weighting network receives embeddings of the model outputs from the previous time instants as feedback. The proposed relevance weighting scheme allows the respective feature representations to be adaptively selected before propagation to the higher layers. The application of the proposed approach for the task of speech recognition on Aurora-4 and CHiME-3 datasets gives significant performance improvements over baseline systems on raw waveform signal as well as those based on mel representations (average relative improvement of 15% over the mel baseline on Aurora-4 dataset and 7% on CHiME-3 dataset).
description: arXiv admin note: substantial text overlap with arXiv:2011.00721, arXiv:2011.02136, arXiv:2001.07067
The Impact of Black Hole Formation on Population Averaged Supernova Yields
Creators: name: Griffith, Emily J.
name: Sukhbold, Tuguldur
name: Weinberg, David H.
name: Johnson, Jennifer A.
name: Johnson, James W.
name: Vincenzo, Fiorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The landscape of black hole (BH) formation -- which massive stars explode as core-collapse supernovae (CCSN) and which implode to BHs -- profoundly affects the IMF-averaged nucleosynthetic yields of a stellar population. Building on the work of Sukhbold et al. (2016), we compute IMF-averaged yields at solar metallicity for a wide range of assumptions, including neutrino-driven engine models with extensive BH formation, models with a simple mass threshold for BH formation, and a model in which all stars from $8-120 \text{M}_{\odot}$ explode. For plausible choices, the overall yields of $α$-elements span a factor of three, but changes in relative yields are more subtle, typically $0.05-0.2$ dex. For constraining the overall level of BH formation, ratios of C and N to O or Mg are promising diagnostics. For distinguishing complex, theoretically motivated landscapes from simple mass thresholds, abundance ratios involving Mn or Ni are promising because of their sensitivity to the core structure of the CCSN progenitors. We confirm previous findings of a substantial (factor $2.5-4$) discrepancy between predicted O/Mg yield ratios and observationally inferred values, implying that models either overproduce O or underproduce Mg. No landscape choice achieves across-the-board agreement with observed abundance ratios; the discrepancies offer empirical clues to aspects of massive star evolution or explosion physics still missing from the models. We find qualitatively similar results using the massive star yields of Limongi & Chieffi (2018). We provide tables of IMF-integrated yields for several landscape scenarios, and more flexible user-designed models can be implemented through the publicly available $\texttt{Versatile Integrator for Chemical Evolution}$ ($\texttt{VICE}$; https://pypi.org/project/vice/).
description: 27 pages, 14 figures, 2 tables
Energy spectra of X-ray quasi-periodic oscillations in accreting black hole binaries
Creators: name: Zycki, P. T.
name: Sobolewska, M. A.
name: Niedzwiecki, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the energy dependencies of X-ray quasi-periodic oscillations in black hole X-ray binaries. We analyze RXTE data on both the low- and high-frequency QPO. We construct the low-f QPO energy spectra, and demonstrate that they do not contain the thermal disk component, even though the latter is present in the time averaged spectra. The disk thus does not seem to participate in the oscillations. Moreover the QPO spectra are harder than the time averaged spectra when the latter are soft, which can be modeled as a result of modulations occurring in the hot plasma. The QPO spectra are softer than the time averaged spectra when the latter are hard. The absence of the disk component in the QPO spectra is true also for the high-frequency (hecto-Hz) QPO observed in black hole binaries. We compute the QPO spectra expected from the model of disk resonances.
description: 4 pages, Proc. of IAU Symposium 238, "Black Holes from Stars to Galaxies - across the range of masses", Prague, Aug 2006
Stories about a trip to Florida and cannibals who turned into plants
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-010114-01: Two stories told in English. One is about Verdena's trip to Florida for a language conference, and the other is about some cannibals who turned into thorny inedible plants.
Χωροταξική υψομετρική διαβάθμιση – ανάλυση των κατηγοριών χαρακτηρισμού στα δασικά οικοσυστήματα της Π.Ε. Δράμας
Creators: name: Καλαϊτζής, Γεώργιος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Δασικός Χάρτης
Ψηφιακό Μοντέλο Εδάφους
Δασική / Χορτολιβαδική έκταση
Forest map
Digital Elevation Model
Forestland / Grassland

description: Η παρούσα μεταπτυχιακή διατριβή έχει ως κύριο στόχο τη μελέτη της κατανομής των μορφών/χρήσεων γης στις υψομετρικές ζώνες. Η έρευνα πραγματοποιήθηκε στην Περιφερειακή Ενότητα (Π.Ε) Δράμας. Η περιοχή εμφανίζει ιδιαίτερο ενδιαφέρον καθώς έχει σύνθετο ανάγλυφο και παρουσιάζονται πεδινές, ημιορεινές και ορεινές εκτάσεις σε ίση περίπου έκταση. Για την υλοποίηση των στόχων που είχαν τεθεί συγκεντρώθηκαν οι δασικοί χάρτες που έχουν καταρτιστεί στην περιοχή, το ψηφιακό μοντέλο εδάφους και τα στοιχεία από την απογραφή πληθυσμού. Η έρευνα αποδεικνύει ότι στις ορεινές περιοχές τα κύματα αστικοποίησης οδήγησαν σε εγκατάλειψη των χωραφιών ενώ στις πεδινές περιοχές και γενικότερα γύρω από τα αστικά κέντρα όπου υπήρχε μεγαλύτερη ανάγκη για οικοπεδοποίηση της γης ή γεωργική εκμετάλλευση παρουσιάζονται οι περισσότερες εκχερσώσεις. Τα αποτελέσματα μπορούν να συμβάλουν στην άσκηση ορθής περιβαλλοντικής και χωροταξικής πολιτικής στα δασικά οικοσυστήματα της χώρας λαμβάνοντας υπόψη τόσο τις τρέχουσες όσο και τις μελλοντικά διαφαινόμενες πληθυσμιακές μεταβολές
description: The current thesis aims to study the land use distribution to the hypsometric zones. The case study was conducted in the Regional Unit of Drama. The research area has particular interest as it present complex relief and lowland, semi-mountainous and mountainous areas has equal area. In order to achieve the objectives of the study the conducted forest maps, the digital elevation model and census data were collected. The research shows that in mountainous area urbanization have led to the abandonment of parcel while in lowlands, especially around urban center for residential development or farming more clearances were recorded. The findings of the current study could contribute to proper environmental and spatial planning policy in the forest ecosystems of our country taking into account both current and future emerging population changes
A Faint New Milky Way Satellite in Bootes
Creators: name: Belokurov, V.
name: Zucker, D. B.
name: Evans, N. W.
name: Wilkinson, M. I.
name: Irwin, M. J.
name: Hodgkin, S.
name: Bramich, D. M.
name: Irwin, J. M.
name: Gilmore, G.
name: Willman, B.
name: Vidrih, S.
name: Newberg, H. J.
name: Wyse, R. F. G.
name: Fellhauer, M.
name: Hewett, P. C.
name: Cole, N.
name: Bell, E. F.
name: Beers, T. C.
name: Rockosi, C. M.
name: Yanny, B.
name: Grebel, E. K.
name: Schneider, D. P.
name: Lupton, R.
name: Barentine, J. C.
name: Brewington, H.
name: Brinkmann, J.
name: Harvanek, M.
name: Kleinman, S. J.
name: Krzesinski, J.
name: Long, D.
name: Nitta, A.
name: Smith, J. A.
name: Snedden, S. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this Letter, we announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of 60 kpc. It was found in a systematic search for stellar overdensities in the North Galactic Cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude diagram shows a well-defined turn-off, red giant branch, and extended horizontal branch. Its absolute magnitude is -5.8, which makes it one of the faintest galaxies known. The half-light radius is 220 pc. The isodensity contours are elongated and have an irregular shape, suggesting that Boo may be a disrupted dwarf spheroidal galaxy.
description: ApJ (Letters), in press
Average minijet rapidity ratios in Mueller-Navelet jets
Creators: name: de León, Nauzet Bethencourt
name: Chachamis, Grigorios
name: Vera, Agustín Sabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate different final state features in Mueller-Navelet jets events at hadron colliders. The focus lies on the average rapidity ratio between subsequent minijet emissions which has been investigated in previous works but now is modified to also incorporate the transverse momenta together with the rapidities of the emitted jets. We study the dependence of this observable on a lower transverse momentum veto which does affect the typical minijet multiplicity of the events under scrutiny. We find that this observable is stable when including higher order quantum corrections, also when collinear terms are resummed to all orders.
Anomalous bond stretching phonons as a probe of charge fluctuations in perovskites
Creators: name: Cojocaru, S.
name: Citro, R.
name: Marinaro, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Important information on momentum resolved low energy charge response can be extracted from anomalous properties of bond stretching in plane phonons observed in inelastic neutron and X-ray scattering in cuprates and some other perovskites. We discuss a semiphenomenological model based on coupling of phonons to a single charge mode. The phonon dispersion and linewidth allow to locate the energy of the charge excitation in the mid infrared part of the spectrum and to determine some of its characteristics. New experiments on oxygen isotope substitution could allow to achieve a more detailed description. Corresponding relations following from the model can be used for the interpretation of experiments and as test of the model.
description: presented at the M2S-HTSC-VIII conference in Dresden
Identification of point sources in gamma rays using U-shaped convolutional neural networks and a data challenge
Creators: name: Panes, Boris
name: Eckner, Christopher
name: Hendriks, Luc
name: Caron, Sascha
name: Dijkstra, Klaas
name: Jóhannesson, Guðlaugur
name: de Austri, Roberto Ruiz
name: Zaharijas, Gabrijela
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: At GeV energies, the sky is dominated by the interstellar emission from the Galaxy. With limited statistics and spatial resolution, accurately separating point sources is therefore challenging. Here we present the first application of deep learning based algorithms to automatically detect and classify point sources from gamma-ray data. For concreteness we refer to this approach as AutoSourceID. To detect point sources, we utilized U-shaped convolutional networks for image segmentation and {\it k}-means for source clustering and localization. We also explored the Centroid-Net algorithm, which is designed to find and count objects. The training data are based on 9.5 years of exposure from The Fermi Large Area Telescope (Fermi-LAT) and we used source properties of active galactic nuclei (AGNs) and pulsars (PSRs) from the fourth Fermi-LAT source catalog (4FGL) in addition to several models of background interstellar emission. The results of the localization algorithm are fed into a classification neural network that is trained to separate the three general source classes (AGNs, PSRs, and FAKE sources). We compared our localization algorithms qualitatively with traditional methods and find them to have similar detection thresholds. We also demonstrate the robustness of our source localization algorithms to modifications in the interstellar emission models, which presents a clear advantage over traditional methods. The classification network is able to discriminate between the three classes with typical accuracy of $\sim$ 70%, as long as balanced data sets are used in classification training. In https://github.com/bapanes/AutoSourceID, we publish our training data sets and analysis scripts and invite the community to join the data challenge aimed to improve the localization and classification of gamma-ray point sources.
description: 19 pages (two-column format), 14 figures, accepted for publication in Astronomy & Astrophysics
A metabolic comparison of isokinetic and free sprinting
Creators: name: Roberts, Gregory Alan
Publisher: name: University of British Columbia
Year: 2008

description: The purpose of this study was to examine the Excess Post-Exercise Oxygen Consumption (EPOC) and peak blood lactate responses of sprinters following exhaustive treadmill running, maximal isokinetic and free sprinting. Eight university sprinters (mean: age = 24.8 yrs., ht. = 178.9 cm., wt. = 74.9 kg.) performed a 2 minute anaerobic speed test (AST) and tethered isokinetic and free sprinting protocols consisting of five second maximal repetitions separated by ten second active recoveries. A five repetition isokinetic set was compared to five and ten repetition free sprint sets. A correlation (r = +0.87) was calculated between the EPOC and peak blood lactate values over the four experimental protocols. Tukey's post hoc comparisons determined significantly different corrected EPOC (HSD = 2.04, α < 0.05) and peak blood lactate (HSD = 1.72, α < 0.05) cell means between the 2 minute AST (15.16 ± 2.59 Litres; 14.83 ± 1.21 mmol/L) and the other three protocols: the 5 repetition anaerobic power master (APM) (11.38 ± 2.72 Litres; 12.77 ± 1.97 mmol/L), the 10 repetition free sprint (9.88 ± 2.80 Litres; 11.25 ± 2.15 mmol/L) and the 5 repetition free sprint (9.09 ± 2.51 Litres; 9.83 ± 3.09 mmol/L). Additionally, significance was between the 5 repetition APM condition and the 5 repetition free sprint condition. These findings suggest that five, 5 second isokinetic sprinting repetitions require more work in less time and thereby produce a metabolic demand similar to ten, 5 second free sprinting repetitions.
Differentiating Contributions of Electrons and Phonons to the Thermoreflectance Spectra of Gold
Creators: name: Liu, Kexin
name: Shi, Xinping
name: Angeles, Frank
name: Mohan, Ramya
name: Gorchon, Jon
name: Coh, Sinisa
name: Wilson, Richard B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: To better understand the many effects of temperature on the optical properties of metals, we experimentally and theoretically quantify the electron vs. phonon contributions to the thermoreflectance spectra of gold. We perform a series of pump/probe measurements on nanoscale Pt/Au bilayers at wavelengths between 400 and 1000 nm. At all wavelengths, we find that changes in phonon temperature, not electron temperature, are the primary contributor to the thermoreflectance of Au. The thermoreflectance is most sensitive to the electron temperature at wavelength of ~480 nm due to interband transitions between d-states and the Fermi-level. In the near infrared, the electron temperature is responsible for only ~2% of the total thermoreflectance. We also compute the thermoreflectance spectra of Au from first principles. Our calculations further confirm that phonon temperature dominates thermoreflectance of Au. Most of Au's thermoreflectance is due to the effect of the phonon population on electron lifetime.
description: 30 pages, 5 figures, 7 supplemental figures
Two-phonon contributions to inelastic x-ray scattering spectra of MgB2
Creators: name: Baron, A. Q. R.
name: Uchiyama, H.
name: Heid, R.
name: Bohnen, K. -P.
name: Tanaka, Y.
name: Tsutsui, S.
name: Ishikawa, D.
name: Lee, S.
name: Tajima, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two-phonon contributions to meV-resolved inelastic x-ray scattering spectra of MgB2 at 300K are identified, in good agreement, in both intensity and energy, with a harmonic calculation using the force constant matrix from ab-inito LDA calculations. This contribution impacts the determination of the linewidth of the E2g phonon mode that is so important for the high Tc of this material. To the best of our knowledge, this is the first observation of peaks in measurements of phonon dispersion (q>0) due to 2-phonon scattering in a non-rare-gas solid.
description: 8 Pages, 4 Figures Please reference Phys. Rev. B 75, 020505(R), 2007
Wandering and getting lost: the architecture of an app activating local communities on dementia issues
Creators: name: Andersen, Nicklas Sindlev
name: Chiarandini, Marco
name: Mauro, Jacopo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We describe the architecture of Sammen Om Demens (SOD), an application for portable devices aiming at helping persons with dementia when wandering and getting lost through the involvement of caregivers, family members, and ordinary citizens who volunteer. To enable the real-time detection of a person with dementia that has lost orientation, we transfer location data at high frequency from a frontend on the smartphone of a person with dementia to a backend system. The backend system must be able to cope with the high throughput data and carry out possibly heavy computations for the detection of anomalous behavior via artificial intelligence techniques. This sets certain performance and architectural requirements on the design of the backend. In the paper, we discuss our design and implementation choices for the backend of SOD that involve microservices and serverless services to achieve efficiency and scalability. We give evidence of the achieved goals by deploying the SOD backend on a public cloud and measuring the performance on simulated load tests.
Quantum Low-Density Parity-Check Codes
Creators: name: Breuckmann, Nikolas P.
name: Eberhardt, Jens Niklas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction is an indispensable ingredient for scalable quantum computing. In this Perspective we discuss a particular class of quantum codes called low-density parity-check (LDPC) quantum codes. The codes we discuss are alternatives to the surface code, which is the currently leading candidate to implement quantum fault-tolerance. We introduce the zoo of LDPC quantum codes and discuss their potential for making quantum computers robust against noise. In particular, we explain recent advances in the theory of LDPC quantum codes related to certain product constructions and discuss open problems in the field.
description: 17 pages, 11 figures
Intrinsic Glue and Wilson lines within Dressed Quarks
Creators: name: Costa, C. S. R.
name: Freese, Adam
name: Cloët, Ian C.
name: El-Bennich, Bruno
name: Krein, Gastão
name: Tandy, Peter C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We construct a quark target model (QTM) to incorporate intrinsic glue into effective low-energy models of QCD, which often contain only quark degrees of freedom. This method guarantees the gauge invariance of observables order-by-order in the strong coupling. The quark and gluon PDFs for the dressed quarks are obtained in the QTM at leading order. We demonstrate gauge invariance of the results by comparing both covariant and light cone gauges, with the former including an explicit Wilson line contribution. A key finding is that in covariant gauges the Wilson line can carry a significant amount of the light cone momentum. With coupling strength $α_s = 0.5$ and dressed quark mass $M_q = 0.4\,$GeV, we find quark and gluon momentum fractions of $\left_q = 0.81$ and $\left_g = 0.19$, where the Wilson line contribution to the quark momentum fraction is $-0.18$. We use the on-shell renormalization scheme and find that at one-loop this Wilson line contribution does not depend on the covariant gauge but does vanish in light cone gauge as expected. This result demonstrates that it is crucial to account for Wilson line contributions when calculating quantum correlation functions in covariant gauges. We also consider the impact of a gluon mass using the gauge invariant formalism proposed by Cornwall, and combine these QTM results with two quark-level models to obtain quark and gluon PDFs for the pion.
description: 12 pages
Elicitation of evidentials
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-311213-06: Elicitation of the evidential enclitic -xola:n based on examples from texts #1-36 in Sapir and Golla (2001).
Generating and Evaluating Explanations of Attended and Error-Inducing Input Regions for VQA Models
Creators: name: Ray, Arijit
name: Cogswell, Michael
name: Lin, Xiao
name: Alipour, Kamran
name: Divakaran, Ajay
name: Yao, Yi
name: Burachas, Giedrius
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Attention maps, a popular heatmap-based explanation method for Visual Question Answering (VQA), are supposed to help users understand the model by highlighting portions of the image/question used by the model to infer answers. However, we see that users are often misled by current attention map visualizations that point to relevant regions despite the model producing an incorrect answer. Hence, we propose Error Maps that clarify the error by highlighting image regions where the model is prone to err. Error maps can indicate when a correctly attended region may be processed incorrectly leading to an incorrect answer, and hence, improve users' understanding of those cases. To evaluate our new explanations, we further introduce a metric that simulates users' interpretation of explanations to evaluate their potential helpfulness to understand model correctness. We finally conduct user studies to see that our new explanations help users understand model correctness better than baselines by an expected 30\% and that our proxy helpfulness metrics correlate strongly ($ρ>0.97$) with how well users can predict model correctness.
description: Applied AI Letters, Wiley, 25 October 2021
Solving Thousand Digit Frobenius Problems Using Grobner Bases
Creators: name: Roune, Bjarke Hammersholt
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A Grobner basis-based algorithm for solving the Frobenius Instance Problem is presented, and this leads to an algorithm for solving the Frobenius Problem that can handle numbers with thousands of digits. Connections to irreducible decompositions and Hilbert functions are also presented.
description: 7 pages. See http://www.broune.com/ for associated benchmarks and software. Version 2 includes some minor corrections
Implementation of an Intentional Ethic of Care in an Undergraduate General Chemistry Course
Creators: name: Mcleod, Zachary Alexander
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 390407
subject: Inclusive education
classificationCode: 390102
subject: Curriculum and pedagogy theory and development
classificationCode: 399999
subject: Other education not elsewhere classified

description: Undergraduate general chemistry courses are often perceived in a negative light by students. Student attitudes towards chemistry play a significant role in their success in chemistry and retention in STEM altogether. Research has shown in K-12 classrooms that care-based instruction strategies can help to improve student attitudes towards chemistry, thus increasing student retention in STEM. Demonstration of an ethic of care in the classroom requires constant feedback and acknowledgment from the students to ensure their needs are being met. However, few studies show this ethic of care from the student perspective, and even fewer explore it in higher education. This study attempts to implement an ethic of care within two sections of a large-enrollment, second-semester undergraduate general chemistry course, assess the impact on student attitudes towards chemistry, and the satisfaction of the students’ basic psychological needs.
$η^{(')}\toπ^+π^-γ^{(\ast)}$ in large-$N_c$ chiral perturbation theory
Creators: name: Bickert, Patricia
name: Scherer, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a calculation of the decays $η^{(')}\toπ^+π^-γ^{(\ast)}$ at the one-loop level up to and including next-to-next-to-leading order (NNLO) in large-$N_c$ chiral perturbation theory. The numerical evaluation of the results is performed successively at LO, NLO, and NNLO, fitting the relevant low-energy constants to the available experimental data. We discuss the widths and decay spectra of $η^{(')}\toπ^+π^-γ$ as well as $η^{(')}\toπ^+π^-l^+l^-$, with $l=e,\ μ$.
Hyperbolic relaxation technique for solving the dispersive Serre-Green-Naghdi Equations with topography
Creators: name: Guermond, Jean-Luc
name: Kees, Chris
name: Popov, Bojan
name: Tovar, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65M60, 65M12, 35L50, 35L65, 76M10

description: The objective of this paper is to propose a hyperbolic relaxation technique for the dispersive Serre-Green-Naghdi equations (also known as the fully non-linear Boussinesq equations) with full topography effects introduced in Green, A.E. and Naghdi, P.M. (J. Fluid Mech., 78, 237-246, 1976) and Seabra-Santos el al (J. Fluid Mec.h, 176, 117-134, 1997). This is done by revisiting a similar relaxation technique introduced in Guermond el al (J. Comput. Phys., 399, 108917, 2019) with partial topography effects. We also derive a family of analytical solutions for the one-dimensional dispersive Serre-Green-Naghdi equations that are used to verify the correctness the proposed relaxed model. The method is then numerically illustrated and validated by comparison with experimental results.
description: Accepted by Journal of Computational Physics - October 25, 2021
Radio Counterpart Candidates to 4FGL-DR2 Unassociated Sources
Creators: name: Bruzewski, S.
name: Schinzel, F. K.
name: Taylor, G. B.
name: Petrov, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: For the duration of the Fermi Gamma-Ray Space Telescope's mission, approximately one-third of the point sources detected have been noted as "unassociated," meaning that they seem to have no known counterpart at any other wavelength/frequency. This mysterious part of the gamma-ray sky is perhaps one of the largest unknowns in current astronomical pursuits, and as such has been probed extensively by various techniques at various frequencies. Radio frequencies have been perhaps one of the most fruitful, producing a large fraction of the identified and associated Active Galactic Nuclei (AGN) and pulsars noted in each update of the point source catalogs. Here we present a catalog of 7432 radio counterpart candidates for unassociated gamma-ray fields in the 2nd Data Release of the 4th Fermi Point Source Catalog (4FGL-DR2). A description of the catalog and source types is provided followed by a discussion that demonstrates how the results of this work will aid new associations and identifications. As part of this work, we also present a first catalog derived from "quicklook" images of the Very Large Array Sky Survey (VLASS).
description: 17 pages, 6 figures, 5 tables
Retail Demand Forecasting with Artificial Neural Networks
Creators: name: Μαραγκός, Νικήτας Λεωνίδα (Maragkos, Nikitas)
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Χρονο-σειρές
Πρόβλεψη λιανικής ζήτησης
Μηχανική μάθηση
Time-series
Retail demand forecasting
Machine learning

description: Η κύρια πρόθεση αυτής της διατριβής ήταν να παρουσιάσει μια προσέγγιση μηχανικής μάθησης για ένα πρόβλημα πρόβλεψης λιανικής ζήτησης ( π.λ.ζ. ). Το σύνολο δεδομένων που μελετήθηκε είναι ένα πραγματικό σύνολο δεδομένων π.λ.ζ., το οποίο περιείχε πληροφορίες ζήτησης τριών διαφορετικών ομάδων προϊόντων, από δεκατρία καταστήματα της ίδιας αλυσίδας. Η χρονική περίοδος είναι δύο έτη, από τον Σεπτέμβριο του 2017 έως τον Σεπτέμβριο του 2019. Το μοντέλο μηχανικής εκμάθησης που χρησιμοποιήθηκε είναι αυτό της μακροπρόθεσμης-βραχυπρόθεσμης-μνήμης (long short term memory). Χρησιμοποιήθηκαν διαφορετικές αρχιτεκτονικές και όλες εκπαιδεύτηκαν μέχρι το 2018 και δοκιμάστηκαν το 2019. Τα αποτελέσματα συγκρίθηκαν με τις μετρικές mean absolute error (mae) και mean squared error (mse) και ήταν καλύτερες από αυτές των αφελή ( naïve ), arima και sarima. Ένα άλλο μοντέλο μηχανικής μάθησης που θα ταίριαζε, είναι αυτό της ενισχυτικής μάθησης και μία πιθανή αναπαράσταση παρουσιάζεται σε αυτή τη διατριβή. Τέλος, δύο μοντέλα lstm συνδυάστηκαν με παρόμοιο τρόπο όπως το actor-critic μοντέλο, ξεπερνώντας όλες τις άλλες υλοποιήσεις. Επίσης, χρησιμοποιήθηκαν διαφορετικά μοντέλα stacking καθώς έχουν πιο σταθερά αποτελέσματα
description: The main intention of this master thesis was to introduce a machine learning approach for a retail demand forecasting problem (rdf). The dataset that has been studied is a real rdf dataset, which contained sale information of three different group of products, from thirteen stores of the same market chain. The time period is two years from September 2017 until September 2019. The machine learning model that has been used is the long-short-term-memory. Different architectures have been used and all trained until 2018 and tested in 2019. The results were compared with mean absolute error (mae) and mean squared error (mse) metrics and were better than naïve’s, arima's and sarima's. Also it has been used and stacking for more stable results. Finally, two lstm models combined in a similar way as the actor-critic, outperforming the other models. Also, different stacking models have been used in order to make more stable results
Bali's ancient rice terraces: A Hamiltonian approach
Creators: name: Gandica, Yérali
name: Lansing, J. Stephen
name: Chung, Ning Ning
name: Thurner, Stefan
name: Chew, Lock Yue
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a Hamiltonian approach to reproduce the relevant elements of the centuries-old Subak irrigation system in Bali, showing a cluster-size power-law distribution. The resulting system presents two equilibria. The first balance is between energy and entropy contributions. The second lies in the energy contribution: a local Potts-type interaction and a long-range anti-ferromagnetic one without attenuation. Finite-size scaling analysis shows that as a result of the second balance, the transition balancing energy and entropy contributions for low values of the antiferromagnetic contribution is absorbed by the transition for high values of that contribution as the system size increases. The system thus presents only a weak-first order phase transition at the thermodynamic limit. This extends the Hamiltonian framework to a new domain of coupled human-environmental interactions.
description: 6 pages, 4 figures
Lines in the Cosmic Microwave Background Spectrum from the Epoch of Cosmological Hydrogen Recombination
Creators: name: Rubino-Martin, J. A.
name: Chluba, J.
name: Sunyaev, R. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the spectral distortions of the Cosmic Microwave Background (CMB) arising during the epoch of cosmological hydrogen recombination within the standard cosmological (concordance) model for frequencies in the range 1 GHz-3500 GHz. We follow the evolution of the populations of the hydrogen levels including states up to principle quantum number $n=30$ in the redshift range $500\leq z\leq 3500$. All angular momentum sub-states are treated individually, resulting in a total number of 465 hydrogen levels. The evolution of the matter temperature and the fraction of electrons coming from HeII are also included. We present a detailed discussion of the distortions arising from the main dipolar transitions, e.g. Lyman and Balmer series, as well as the emission due to the two-photon decay of the hydrogen 2s level. Furthermore, we investigate the robusteness of the results against changes in the number of shells considered. The resulting spectral distortions have a characteristic oscillatory behaviour, which might allow experimentalists to separate them from other backgrounds. The relative distortion of the spectrum exceeds a value of $10^{-7}$ at wavelengths longer than 21cm. Our results also show the importance of detailed follow-up of the angular momentum sub-states, and their effect on the amplitude of the lines. The effect on the residual electron fraction is only moderate, and mainly occurs at low redshifts. The CMB angular power spectrum is changed by less than 1%. Finally, our computations show that if the primordial radiation field is described by a pure blackbody, then there is no significant emission from any hydrogen transition at redshifts greater than $z \sim 2000$. This is in contrast to some earlier works, where the existence of a `pre-recombination' peak was claimed.
description: 16 pages, 23 figures. Submitted to MNRAS
Fermionization and boundary states in 1+1 dimensions
Creators: name: Fukusumi, Yoshiki
name: Tachikawa, Yuji
name: Zheng, Yunqin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the last few years it was realized that every fermionic theory in 1+1 dimensions is a generalized Jordan-Wigner transform of a bosonic theory with a non-anomalous $\mathbb{Z}_2$ symmetry. In this note we determine how the boundary states are mapped under this correspondence. We also interpret this mapping as the fusion of the original boundary with the fermionization interface.
description: 39 pages, 3 figures
COMPASS Plan for the Exploitation and Dissemination of Results Including Communication Activities
Creators: name: Kossida, Maggie
name: Laskaridou, Sofia
name: Monokrousou, Klio
Publisher: name: Zenodo
Year: 2024

description: This document is the “Plan for the Exploitation and Dissemination of Results Including Communication Activities” of the COMPASS project, aiming to ensure the coherent streamlining of the project outputs into targeted high-quality dissemination products, and their dissemination to specific target audiences.
Ζητήματα θείας λατρείας και οι σχετικές αποφάσεις της Τοπικής Συνόδου της Ρωσικής Ορθοδόξου Εκκλησίας των ετών 1917-1918
Creators: name: Guskov, Andrey Lev (Γκουσκόβ, Ανδρέας)
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Τοπική Σύνοδος της Ρωσικής Ορθοδόξου Εκκλησίας των ετών 1917-1918
Εκκλησιαστική Λειτουργική Γλώσσα
Τυπικό
Κήρυγμα
Αγιοκατάταξη
Local Council of the Russian Orthodox Church 1917-1918
Church Liturgical Language
Typikon
Preaching
Canonization of Saints

description: Στη μεταπτυχιακή εργασία μελετάται το έργο της Τοπικής Συνόδου της Ρωσικής Ορθοδόξου Εκκλησίας των ετών 1917-1918 και συγκεκριμένα η συμβολή της 7ης Επιτροπής περί ακολουθιών, κηρύγματος και ναού και της ίδιας της Τοπικής Συνόδου, στα θέματα της εκκλησιαστικής λειτουργικής γλώσσας, της ρύθμισης του Τυπικού, του κηρύγματος, της αγιοκατάταξης και της αποκατάστασης της Εορτής πάντων των Ρώσων αγίων. Παρουσιάζονται οι συζητήσεις επί των θεμάτων αυτών κατά την προσυνοδική περίοδο, το έργο της 7ης Επιτροπής και της ολομέλειας της Τοπικής Συνόδου πάνω στα αναφερθέντα θέματα, ως και οι ληφθείσες επίσημες αποφάσεις και οι εκπονηθείσες εισηγήσεις, τις οποίες ελλείψει χρόνου δεν πρόλαβε να μελετήσει και να εγκρίνει η Τοπική Σύνοδος
description: Τhe Master’s thesis is dedicated to the work of the Local Council of the Russian Orthodox Church 1917-1918, and more specifically to the contribution of the 7th Commission on the service, preaching and the church in the areas of the liturgical language, the Typikon, preaching, the canonization of the saints and the renewal of the celebration of the Feast of All Russian Saints. The thesis examines discussions of these topics during the pre-conciliar time, as well as during the sessions of the 7th Commission and the plenary sessions of the Local Council. Officially confirmed resolutions and elaborated drafts of reports, which due to the shortage of time were not considered nor confirmed by the Local Council, are reviewed
A New Milky Way Dwarf Satellite in Canes Venatici
Creators: name: Zucker, D. B.
name: Belokurov, V.
name: Evans, N. W.
name: Wilkinson, M. I.
name: Irwin, M. J.
name: Sivarani, T.
name: Hodgkin, S.
name: Bramich, D. M.
name: Irwin, J. M.
name: Gilmore, G.
name: Willman, B.
name: Vidrih, S.
name: Fellhauer, M.
name: Hewett, P. C.
name: Beers, T. C.
name: Bell, E. F.
name: Grebel, E. K.
name: Schneider, D. P.
name: Newberg, H. J.
name: Wyse, R. F. G.
name: Rockosi, C. M.
name: Yanny, B.
name: Lupton, R.
name: Smith, J. A.
name: Barentine, J. C.
name: Brewington, H.
name: Brinkmann, J.
name: Harvanek, M.
name: Kleinman, S. J.
name: Krzesinski, J.
name: Long, D.
name: Nitta, A.
name: Snedden, S. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the North Galactic Cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch, as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ~220 kpc. Based on the SDSS data, we estimate an absolute magnitude of Mv ~ -7.9, a central surface brightness of mu_0,V ~ 28 mag arcsecond^-2, and a half-light radius of \~ 8.5' (~ 550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found.
description: 4 pages, 4 figures; submitted to ApJ Letters
Infinite-time concentration in Aggregation--Diffusion equations with a given potential
Creators: name: Carrillo, Jose A.
name: Gómez-Castro, David
name: Vázquez, Juan Luis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35K65, 35B40, 35D40, 35Q84

description: Typically, aggregation-diffusion is modeled by parabolic equations that combine linear or nonlinear diffusion with a Fokker-Planck convection term. Under very general suitable assumptions, we prove that radial solutions of the evolution process converge asymptotically in time towards a stationary state representing the balance between the two effects. Our parabolic system is the gradient flow of an energy functional, and in fact we show that the stationary states are minimizers of a relaxed energy. Here, we study radial solutions of an aggregation-diffusion model that combines nonlinear fast diffusion with a convection term driven by the gradient of a potential, both in balls and the whole space. We show that, depending on the exponent of fast diffusion and the potential, the steady state is given by the sum of an explicit integrable function, plus a Dirac delta at the origin containing the rest of the mass of the initial datum. Furthermore, it is a global minimizer of the relaxed energy. This splitting phenomenon is an uncommon example of blow-up in infinite time.
CASO DE ESTUDIO CENTRADO EN FOMENTAR LAS COMPETENCIAS DIGITALES Y EL APRENDIZAJE DE IDIOMAS EN UN CONTEXTO INTERNACIONAL A TRAVÉS DE UNA PLATAFORMA TECNOLÓGICA
Creators: name: Bejarano Echeverri, M.
Publisher: name: Zenodo
Year: 2019
Subjects: TIC, CLIL, competencia digital, competencias transversales, plataformas colaborativas, motivación

description: TRABAJO DE FIN DE MÁSTER EN TIC EN EDUCACIÓN: ANÁLISIS Y DISEÑO DE PROCESOS, RECURSOS Y PRÁCTICAS FORMATIVAS CURSO 2018/2019 TUTORES: FRANCISCO JOSÉ GARCÍA PEÑALVO - ALICIA GARCÍA HOLGADO La competencia digital es la elegida en este estudio ya que se considera de acuerdo con la Comisión Europea, como base esencial para el aprendizaje, dando paso la adquisición de otras competencias debido a su transversalidad educativa. Entre esas competencias se encuentra la de la comunicación en idiomas extranjeros, cuya adquisición es una de las razones principales para la implementación de la metodología CLIL (aprendizaje integrado de contenido y lengua extranjera). Este método se alía inesperadamente con el interés principal de este proyecto, permitiendo así el trabajo grupal y la necesidad de que los estudiantes se apropien de su propia contribución a la comunidad (plataforma colaborativa), en otras palabras, se observa como la serendipia, es decir, la posibilidad de hacer al azar descubrimientos inesperados y afortunados mientras se busca otra cosa, nos presenta un sin fin de oportunidades que ofrecen la integración entre las tecnologías de la información y la comunicación y el método CLIL. Es así como este proyecto, a través de un diseño de estudio de caso, pretende demostrar el impacto que provee la interacción en plataformas colaborativas, influyendo en el aumento de la motivación por el aprendizaje del idioma inglés en este caso de once participantes adolescentes pertenecientes a una academia de inglés. El análisis cualitativo de los datos indicó que la telecolaboración fomenta y contribuye no solo al desarrollo del aprendizaje del inglés sino también al aprendizaje de las mismas competencias y habilidades digitales.
Managing your digital information: Workshop (for PhD students in Humanities, Arts and Social Sciences)
Creators: name: Angelaki, Maria
name: Ammon, Matthias
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: research data management

description: As a researcher, you will encounter research data in many forms, ranging from measurements, numbers and images to documents and publications. Whether you create, receive or collect this information, you will need to organise it. Managing digital information properly is a complex issue. Doing it correctly from the start could save you a lot of time and hassle when preparing a publication or writing up your thesis.
The Orbitally Selective Mott Phase in Electron Doped Twisted TMDs: A Possible Realization of the Kondo Lattice Model
Creators: name: Dalal, Amir
name: Ruhman, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Moiré super-potentials in two-dimensional materials allow unprecedented control of the ratio between kinetic and interaction energy. By this, they pave the way to study a wide variety of strongly correlated physics under a new light. In particular, the transition metal dichalcogenides (TMDs) are promising candidate "quantum simulators" of the Hubbard model on a triangular lattice. Indeed, Mott and generalized Wigner crystals have been observed in such devices. Here we theoretically propose to extend this model into the multi-orbital regime by focusing on electron doped systems at filling higher than 2. As opposed to hole bands, the electronic bands in TMD materials include two, nearly degenerate species, which can be viewed as two orbitals with different effective mass and binding energy. Using realistic band-structure parameters and a slave-rotor mean-field theory, we find that an orbitally selective Mott (OSM) phase can be stabilized over a wide range of fillings, where one band is locked in a commensurate Mott state, while the other remains itinerant with variable density. This scenario thus, realizes the basic ingredients in the Kondo lattice model: A periodic lattice of localized magnetic moments interacting with metallic states. We also discuss possible experimental signatures of the OSM state.
Additional file 1 of Phenylethanol glycosides from the seeds of Aesculus chinensis var. chekiangensis
Creators: name: Zhang, Nan
name: Liu, Di
name: Wei, Shuxiang
name: Cao, Shijie
name: Feng, Xinchi
name: Wang, Kai
name: Ding, Liqin
name: Qiu, Feng
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 1: HR-ESI-MS, 1D- and 2D-NMR spectra of compounds 1–3 (Figures S1–S15), cytotoxic activities of compounds 1–4 on PC12 cells at 10 µM (Figure S16).