cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nuclear Accretion in Galaxies of the Local Universe: Clues from Chandra Observations
Creators: name: Pellegrini, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to find an explanation for the radiative quiescence of supermassive black holes in the local Universe, for a sample of nearby galaxies the most accurate estimates are collected for the mass of a central black hole M_BH, the nuclear X-ray luminosity L_X,nuc and the circumnuclear hot gas density and temperature, by using Chandra data. L_X,nuc varies by \sim 3 orders of magnitude and does not show a relationship with M_BH or with the Bondi mass accretion rate \dotM_B. L_X,nuc is always much lower than expected if \dotM_B ends in a standard accretion disc with high radiative efficiency (this instead can be the case of the active nucleus of Cen A). Radiatively inefficient accretion as in the standard ADAF modeling may explain the low luminosities of a few cases; for others, the predicted luminosity is still too high and, in terms of Eddington-scaled quantities, it is increasingly higher than observed, for increasing \dotM_B. Variants of the simple radiatively inefficient scenario including outflow and convection may reproduce the low emission levels observed, since the amount of matter actually accreted is reduced considerably. However, the most promising scenario includes feedback from accretion on the surrounding gas: this has the important advantages of naturally explaining the observed lack of relationship between L_X,nuc, M_BH and \dotM_B, and of evading the problem of the fate of the material accumulating in the central galactic regions over cosmological times.
description: 19 pages, 3 figures; accepted for publication in The Astrophysical Journal
«Guardare non è più un atto innocente»: il caso Santarcangelo. Intervista a Silvia Bottiroli su censura e teatro
Creators: name: Albanese, Angela
Publisher: name: Università degli Studi di Cagliari
Year: 2015
Subjects: Silvia Bottiroli, Censura, Teatro, Santarcangelo di Romagna

description: Intervista a Silvia Bottiroli, a cura di Angela Albanese
description: Between, Vol 5, N° 9 (2015): Censura e auto-censura
Remixing Music with Visual Conditioning
Creators: name: Yang, Li-Chia
name: Lerch, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Multimedia (cs.MM)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose a visually conditioned music remixing system by incorporating deep visual and audio models. The method is based on a state of the art audio-visual source separation model which performs music instrument source separation with video information. We modified the model to work with user-selected images instead of videos as visual input during inference to enable separation of audio-only content. Furthermore, we propose a remixing engine that generalizes the task of source separation into music remixing. The proposed method is able to achieve improved audio quality compared to remixing performed by the separate-and-add method with a state-of-the-art audio-visual source separation model.
Environmental Dependencies in the Luminosity Function of Galaxies
Creators: name: Tully, R. Brent
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The evidence is becoming strong that the luminosity function of galaxies varies with environment. Higher density, more dynamically evolved regions appear to have more dwarfs per giant. The situation is becoming clearer as a result of wide field imaging surveys with the Canada-France-Hawaii and Subaru telescopes and spectroscopy of faint dwarfs with the Keck telescope. We report here on extensive observations of the small but dense NGC 5846 Group. The faint end of the luminosity function rises relatively steeply in this case.
description: Proceedings IAU Colloq. 198 "Near-Field Cosmology with Dwarf Elliptical Galaxies" 6 pages, 4 figures
Assessment of the Relative Importance of different hyper-parameters of LSTM for an IDS
Creators: name: Sewak, Mohit
name: Sahay, Sanjay K.
name: Rathore, Hemant
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recurrent deep learning language models like the LSTM are often used to provide advanced cyber-defense for high-value assets. The underlying assumption for using LSTM networks for malware-detection is that the op-code sequence of malware could be treated as a (spoken) language representation. There are differences between any spoken-language (sequence of words/sentences) and the machine-language (sequence of op-codes). In this paper, we demonstrate that due to these inherent differences, an LSTM model with its default configuration as tuned for a spoken-language, may not work well to detect malware (using its op-code sequence) unless the network's essential hyper-parameters are tuned appropriately. In the process, we also determine the relative importance of all the different hyper-parameters of an LSTM network as applied to malware detection using their op-code sequence representations. We experimented with different configurations of LSTM networks, and altered hyper-parameters like the embedding-size, number of hidden layers, number of LSTM-units in a hidden layer, pruning/padding-length of the input-vector, activation-function, and batch-size. We discovered that owing to the enhanced complexity of the malware/machine-language, the performance of an LSTM network configured for an Intrusion Detection System, is very sensitive towards the number-of-hidden-layers, input sequence-length, and the choice of the activation-function. Also, for (spoken) language-modeling, the recurrent architectures by-far outperform their non-recurrent counterparts. Therefore, we also assess how sequential DL architectures like the LSTM compare against their non-sequential counterparts like the MLP-DNN for the purpose of malware-detection.
The boundary density profile of a Coulomb droplet. Freezing at the edge
Creators: name: Cardoso, Gabriel
name: Stéphan, Jean-Marie
name: Abanov, Alexander G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We revisit the problem of computing the boundary density profile of a droplet of two-dimensional one-component plasma (2D OCP) with logarithmic interaction between particles in a confining harmonic potential. At a sufficiently low temperature but still in the liquid phase, the density exhibits oscillations as a function of the distance to the boundary of the droplet. We obtain the density profile numerically using Monte-Carlo simulations of the 2D OCP. We argue that the decay and period of those oscillations can be explained within a picture of the Wigner crystallization near the boundary, where the crystal is gradually melted with the increasing distance to the boundary.
description: 26 pages, 13 figures; figure 12 updated
title: Dagstuhl Reports, Table of Contents, Volume 7, Issue 10, 2017
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 7
subject: Issue 10
subject: 2017

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 7, Issue 10, pages i-ii
A Study of the Relationship Between Dietary Habits and Body Mass Index of Faculty of Medicine Vajira Hospital, Navamindradhiraj University Personnels
Creators: name: Chanidtar Atanat
name: Amornrat Chareonchai
Publisher: name: Text and Journal Publication
Year: 2019
Subjects: Food Knowledge
Food Consumption Behavior
Body Mass Index
Faculty of Medicine Vajira Hospital
Navamindradhiraj University Personnels

description: Vajira Medical Journal, 63, 1, -
Explicit Granger causality in kernel Hilbert spaces
Creators: name: Bueso, Diego
name: Piles, Maria
name: Camps-Valls, Gustau
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Granger causality (GC) is undoubtedly the most widely used method to infer cause-effect relations from observational time series. Several nonlinear alternatives to GC have been proposed based on kernel methods. We generalize kernel Granger causality by considering the variables cross-relations explicitly in Hilbert spaces. The framework is shown to generalize the linear and kernel GC methods, and comes with tighter bounds of performance based on Rademacher complexity. We successfully evaluate its performance in standard dynamical systems, as well as to identify the arrow of time in coupled Rössler systems, and is exploited to disclose the El Niño-Southern Oscillation (ENSO) phenomenon footprints on soil moisture globally.
description: 8 pages and 7 captioned figures
Supplements to "A magnetometer recording of the 1887 Ligurian Earthquake, analyzed for the first time, sheds new light on the tectonics of western Liguria"
Creators: name: Tarchini, Gabriele
name: Parolai, Stefano
name: Spallarossa, Daniele
name: Sandron, Denis
Publisher: name: Zenodo
Year: 2024

description: This repository contains the results of the article Tarchini G., Parolai S., Spallarossa D. and Sandron D. "A magnetometer recording of the 1887 Ligurian Earthquake, analyzed for the first time, sheds new light on the tectonics of western Liguria", Communications Earth & Environment, submitted in September 2024.

The repository contains, for each fault scenario tested during the current study:

1) the  synthetic velocigrams generated (synthetic.tr; synthetic.tt; synthetic.tv; synthetic.tz);

2) the synthetic displacement seismograms downsampled, convolved and band-pass filtered (synthetic_downsampled_convolved_filtered);

3) the spectra of the displacement synthetic seismograms used in the analysis and the spectra of the processed synthetic seismograms (spectrum; spectrum_downsampled_convolved_filtered).
Physicians' experiences with the child protection system as a factor in their decision to report child abuse
Creators: name: Vulliamy, Anne Petrice
Publisher: name: University of British Columbia
Year: 2009

description: Victims and perpetrators of child abuse will typically not self-report to child protection services (CPS) so responsibility for detection and reporting of suspected child abuse must fall to others. Since physicians are often the first to treat serious injuries in children, they are in an ideal position to report abuse allegations to CPS social workers who are delegated with the responsibility to protect children. Research shows that although physicians are generally aware of mandatory reporting legislation, they are often non-compliant. A recurrent theme which has not been fully explored in Canadian research is the lack of confidence in CPS as an organizational barrier to reporting. To that end, a short questionnaire was distributed to pediatricians at British Columbia's Children's Hospital (BCCH) requesting feedback about their previous reporting experiences to CPS. Results of this study provide useful feedback to organizations such as CPS and the College of Physicians and Surgeons. Recommendations include the use of interdisciplinary training and guidelines about collaboration between organizations.
Characteristics of Solar Flare Doppler Shift Oscillations Observed with the Bragg Crystal Spectrometer on Yohkoh
Creators: name: Mariska, John T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper reports the results of a survey of Doppler shift oscillations measured during solar flares in emission lines of S XV and Ca XIX with the Bragg Crystal Spectrometer (BCS) on Yohkoh. Data from 20 flares that show oscillatory behavior in the measured Doppler shifts have been fitted to determine the properties of the oscillations. Results from both BCS channels show average oscillation periods of 5.5 +/- 2.7 minutes, decay times of 5.0 +/-2.5 minutes, amplitudes of 17.1 +/- 17.0 km/s, and inferred displacements of 1070 +/- 1710 km, where the listed errors are the standard deviations of the sample means. For some of the flares, intensity fluctuations are also observed. These lag the Doppler shift oscillations by 1/4 period, strongly suggesting that the oscillations are standing slow mode waves. The relationship between the oscillation period and the decay time is consistent with conductive damping of the oscillations.
description: Accepted for publication in ApJ
Evolution of shower parton distributions in a jet from quark recombination model
Creators: name: Tan, Z. G.
name: Yang, C. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The evolution of shower parton distributions in a jet is investigated in the framework of quark recombination model. The distributions are parameterized and the $Q^2$ dependence of the parameters is given by polynomials of $\ln Q^2$ for a wide range of $Q^2$.
description: 5 pages in RevTeX, 3 figures in eps
Attitudes of Medical Students from the Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Toward Cadaveric Dissection
Creators: name: Bongkoch Turathum
name: Benjamart Pratoomthai
name: Thirawass Phumyoo
Publisher: name: Text and Journal Publication
Year: 2019
Subjects: Cadaver
Dissection
Medical students
Attitude

description: Vajira Medical Journal, 63, 1, -
On the Stellar Populations in Faint Red Galaxies in the Hubble Ultra Deep Field
Creators: name: Stutz, Amelia M.
name: Papovich, Casey
name: Eisenstein, Daniel J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the nature of faint, red-selected galaxies at z ~ 2-3 using the Hubble Ultra Deep Field (HUDF) and Spitzer IRAC photometry. We detect candidate galaxies to H < 26 mag, probing lower-luminosity (lower mass) galaxies at these redshifts. We identify 32 galaxies satisfying the (J - H) > 1.0 mag color selection, 16 of which have unblended [3.6um] and [4.5um] IRAC photometry. We derive photometric redshifts, masses, and stellar population parameters for these objects. We find that the selected objects span a diverse range of properties over a large range of redshifts, 1 < z < 3.5. A substantial fraction (11/32) appear to be lower-redshift (z < 2.5), heavily obscured dusty galaxies or edge-on spiral galaxies, while others (12/32) appear to be galaxies at 2 < z < 3.5 whose light at rest-frame optical wavelengths is dominated by evolved stellar populations. Interestingly, by including Spitzer data many candidates for galaxies dominated by evolved stellar populations are rejected, and for only a subset of the sample (6/16) do the data favor this interpretation. We place an upper limit on the space and stellar mass density of candidate massive evolved galaxies. The z > 2.5 objects that are dominated by evolved stellar populations have a space density at most one-third that of z ~ 0 red, early-type galaxies. Therefore, at least two-thirds of present-day early-type galaxies assemble or evolve into their current configuration at redshifts below 2.5. We find a dearth of candidates for low-mass galaxies at 1.5 < z < 3 that are dominated by passively evolving stellar populations even though the data should be sensitive to them; thus, at these redshifts, galaxies whose light is dominated by evolved stellar populations are restricted to only those galaxies that have assembled high stellar mass.[Abridged]
description: 18 pages, 10 figures, and 4 tables. Accepted for publication in ApJ
A discovery of a low-energy excess in cosmic-ray iron: an evidence of the past supernova activity in the Local Bubble
Creators: name: Boschini, M. J.
name: Della Torre, S.
name: Gervasi, M.
name: Grandi, D.
name: Johannesson, G.
name: La Vacca, G.
name: Masi, N.
name: Moskalenko, I. V.
name: Pensotti, S.
name: Porter, T. A.
name: Quadrani, L.
name: Rancoita, P. G.
name: Rozza, D.
name: Tacconi, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since its launch, the Alpha Magnetic Spectrometer - 02 (AMS-02) has delivered outstanding quality measurements of the spectra of cosmic-ray (CR) species, $\bar{p}$, $e^{\pm}$, and nuclei, $_1$H-$_8$O, $_{10}$Ne, $_{12}$Mg, $_{14}$Si, which resulted in a number of breakthroughs. One of the latest long awaited surprises is the spectrum of $_{26}$Fe just published by AMS-02. Because of the large fragmentation cross section and large ionization energy losses, most of CR iron at low energies is local, and may harbor some features associated with relatively recent supernova (SN) activity in the solar neighborhood. Our analysis of new iron spectrum together with Voyager 1 and ACE-CRIS data reveals an unexpected bump in the iron spectrum and in the Fe/He, Fe/O, and Fe/Si ratios at 1-2 GV, while a similar feature in the spectra of He, O, Si, and in their ratios is absent, hinting at a local source of low-energy CRs. The found excess fits well with recent discoveries of radioactive $^{60}$Fe deposits in terrestrial and lunar samples, and in CRs. We provide an updated local interstellar spectrum (LIS) of iron in the energy range from 1 MeV nucleon$^{-1}$ to $\sim$10 TeV nucleon$^{-1}$. Our calculations employ the GalProp-HelMod framework that is proved to be a reliable tool in deriving the LIS of CR $\bar{p}$, $e^{-}$, and nuclei $Z\le28$.
description: 12 pages, 9 figures, 5 tables; Accepted for publication in the Astrophysical Journal. arXiv admin note: text overlap with arXiv:2006.01337
Decoherence and Quantum Walks: anomalous diffusion and ballistic tails
Creators: name: Prokof'ev, Nikolay
name: Stamp, Philip
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The common perception is that strong coupling to the environment will always render the evolution of the system density matrix quasi-classical (in fact, diffusive) in the long time limit. We present here a counter-example, in which a particle makes quantum transitions between the sites of a d-dimensional hypercubic lattice whilst strongly coupled to a bath of two-level systems which 'record' the transitions. The long-time evolution of an initial wave packet is found to be most unusual: the mean square displacement of the particle density matrix shows long-range ballitic behaviour, but simultaneously a kind of weakly-localised behaviour near the origin. This result may have important implications for the design of quantum computing algorithms, since it describes a class of quantum walks.
description: 4 pages, 1 figure
title: Dagstuhl Reports, Table of Contents, Volume 7, Issue 11, 2017
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 7
subject: Issue 11
subject: 2017

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 7, Issue 11, pages i-ii
Spin-fluctuation mechanism of superconductivity in cuprates
Creators: name: Prelovsek, P.
name: Ramsak, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The theory of superconductivity within the t-J model, as relevant for cuprates, is developed. It is based on the equations of motion for projected fermionic operators and the mode-coupling approximation for the self-energy matrix. The dynamical spin susceptibility at various doping is considered as an input, extracted from experiments. The analysis shows that the superconductivity onset is dominated by the spin-fluctuation contribution. We show that T_c is limited by the spin-fluctuation scale $Γ$ and shows a pronounced dependence on the next-nearest-neighbor hopping t'. The latter can offer an explanation for the variation of T_c among different families of cuprates.
description: Color figures
Calibration of an instrumented couch with a motioncapture system in measuring force applied and distance during manual therapy
Creators: name: Adit Chiradejnant
name: Duangporn Suriyaamarit
name: Mathawee Kaewprasert
Publisher: name: Text and Journal Publication
Year: 2019
Subjects: Instrumented Couch
Manual Therapy
Forces Applied

description: Vajira Medical Journal, 63, 1, -
On the axial anomaly in Very Special Relativity
Creators: name: Alfaro, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study the axial anomaly in Very Special Relativity Electrodynamics using Pauli-Villars and dimensional regularization of ultraviolet divergences and Mandelstam-Leibbrandt regularization of infrared divergences. We compute the anomaly in 2 and 4 dimensional space-time. We find that this procedure preserves the vector Ward identity(charge conservation) and reproduce the standard axial anomaly in 2 and 4 dimensions without corrections from VSR. Finally, we show how to obtain the anomaly in the path integral approach.
description: latex, 13 pages
Input files for GlyT1 glycine transporter homology model
Creators: name: Zhang, Yuan-Wei
name: Uchendu, Stacey
name: Leone, Vanessa
name: Bradshaw, Richard T.
name: Sangwa, Ntumba
name: Forrest, Lucy R.
name: Rudnick, Gary
Publisher: name: Zenodo
Year: 2020
Subjects: homology modeling
GlyT1
Secondary Transporter
Membrane protein

description: Data needed to generate the GlyT1 homology model presented in https://doi.org/10.1101/2020.08.20.259572 manuscript. do_model_1.py - MODELLER software script needed for the homology modeling glyt1_on_4xp4_noloop.pir - Alignment file used by the MODELLER software to generate the homology models template-lig.pdb - Structural file of the template (dDAT dopamine transporter) used by the MODELLER software to generate the homology models glyt1-model.pdb - Final GlyT1 model
On the Bieri-Neumann-Strebel-Renz $Σ^1$-invariant of even Artin groups
Creators: name: Kochloukova, Dessislava H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We calculate the Bieri-Neumann-Strebel-Renz invariant $Σ^1(G)$ for even Artin groups $G$ with underlying graph $Γ$ such that if there is a closed reduced path in $Γ$ with all labels bigger than 2 then the length of such path is always odd. We show that $Σ^1(G)^c$ is a rationally defined spherical polyhedron.
Prevalence of Thalassemia and Hemoglobinopathyin the Users of Thalassemia Screening Service at Queen Savang Vadhana Memorial Hospital, The Thai Red Cross Society.
Creators: name: Jutarat Noicharoen
Publisher: name: Text and Journal Publication
Year: 2019
Subjects: Prevalence
Thalassemia
Hemoglobinopathy
Thalassemia Screening

description: Vajira Medical Journal, 63, 1, -
LeuT molecular dynamics simulations in outward open, outward occluded and inward
Creators: name: Zhang, Yuan-We
name: Uchendu, Stacey
name: Leone, Vanessa
name: Bradshaw, Richard
name: Sangwa, Ntumba
name: Forrest, Lucy R
name: Rudnick, Gary
Publisher: name: Zenodo
Year: 2020
Subjects: secondary transporter
membrane protein
LeuT
Molecular dynamics simulations

description: Topology and trajectory files described in https://doi.org/10.1101/2020.08.20.259572 manuscript. 3F48-sim.tar.gz - data of the three simulations (2us each) performed from the 3F48 PDB structure. 3TT1-sim.tar.gz - data of the three simulations (2us each) performed from the 3TT1 PDB structure. 3TT3-sim.tar.gz - data of the three simulations (2us each) performed from the 3TT3 PDB structure.
title: Dagstuhl Reports, Table of Contents, Volume 7, Issue 12, 2017
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 7
subject: Issue 12
subject: 2017

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 7, Issue 12, pages i-ii
Chiral microstructures (spirals) fabrication by holographic lithography
Creators: name: Pang, Yee Kwong
name: Lee, Jeffrey Chi Wai
name: Lee, Hung Fai
name: Tam, Wing Yim
name: Chan, C. T.
name: Sheng, Ping
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an optical interference model to create chiral microstructures (spirals) and its realization in photoresist using holographic lithography. The model is based on the interference of six equally-spaced circumpolar linear polarized side beams and a circular polarized central beam. The pitch and separation of the spirals can be varied by changing the angle between the side beams and the central beam. The realization of the model is carried out using the 325 nm line of a He-Cd laser and spirals of sub-micron size are fabricated in photoresist.
description: 6 pages
The PAU Survey: narrowband photometric redshifts using Gaussian processes
Creators: name: Soo, John Y. H.
name: Joachimi, Benjamin
name: Eriksen, Martin
name: Siudek, Małgorzata
name: Alarcon, Alex
name: Cabayol, Laura
name: Carretero, Jorge
name: Casas, Ricard
name: Castander, Francisco J.
name: Fernández, Enrique
name: Garciá-Bellido, Juan
name: Gaztanaga, Enrique
name: Hildebrandt, Hendrik
name: Hoekstra, Henk
name: Miquel, Ramon
name: Padilla, Cristobal
name: Sánchez, Eusebio
name: Serrano, Santiago
name: Tallada-Crespí, Pau
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We study the performance of the hybrid template-machine-learning photometric redshift (photo-$z$) algorithm Delight, which uses Gaussian processes, on a subset of the early data release of the Physics of the Accelerating Universe Survey (PAUS). We calibrate the fluxes of the $40$ PAUS narrow bands with $6$ broadband fluxes ($uBVriz$) in the COSMOS field using three different methods, including a new method which utilises the correlation between the apparent size and overall flux of the galaxy. We use a rich set of empirically derived galaxy spectral templates as guides to train the Gaussian process, and we show that our results are competitive with other standard photometric redshift algorithms. Delight achieves a photo-$z$ $68$th percentile error of $σ_{68}=0.0081(1+z)$ without any quality cut for galaxies with $i_\mathrm{auto}<22.5$ as compared to $0.0089(1+z)$ and $0.0202(1+z)$ for the BPz and ANNz2 codes, respectively. Delight is also shown to produce more accurate probability distribution functions for individual redshift estimates than BPz and ANNz2. Common photo-$z$ outliers of Delight and BCNz2 (previously applied to PAUS) are found to be primarily caused by outliers in the narrowband fluxes, with a small number of cases potentially indicating spectroscopic redshift failures in the reference sample. In the process, we introduce performance metrics derived from the results of BCNz2 and Delight, allowing us to achieve a photo-$z$ quality of $σ_{68}<0.0035(1+z)$ at a magnitude of $i_\mathrm{auto}<22.5$ while keeping $50$ per cent objects of the galaxy sample.
description: 19 pages, 16 figures, accepted by MNRAS
Baryon isocurvature constraints on the primordial hypermagnetic fields
Creators: name: Kamada, Kohei
name: Uchida, Fumio
name: Yokoyama, Jun'ichi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been pointed out that hypermagnetic helicity decay at the electroweak symmetry breaking may have produced the observed baryon asymmetry of the Universe through the chiral anomaly in the standard model of particle physics. Although fully helical magnetic field that can adequately produce the observed baryon asymmetry is not strong enough to explain the origin of the intergalactic magnetic field inferred by the Fermi satellite, the mixture of helical and nonhelical primordial magnetic fields may explain both baryogenesis and the intergalactic magnetic fields simultaneously. We first show that such a scenario is ruled out by the constraint on the amplitude of baryon isocurvature perturbations produced by the primordial magnetic fields to avoid overproduction of deuterium at the big bang nucleosynthesis. Then we show that any attempt to explain the origin of intergalactic magnetic field by primordial magnetogenesis before the electroweak symmetry breaking does not work due to the above constraint irrespective of the helicity and baryogenesis mechanism.
description: 40 pages, 4 figures, 1 table
Comparing extractions of Sivers functions
Creators: name: Anselmino, M.
name: Boglione, M.
name: Collins, J. C.
name: D'Alesio, U.
name: Efremov, A. V.
name: Goeke, K.
name: Kotzinian, A.
name: Menzel, S.
name: Metz, A.
name: Murgia, F.
name: Prokudin, A.
name: Schweitzer, P.
name: Vogelsang, W.
name: Yuan, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A comparison is given of the various recently published extractions of the Sivers functions from the HERMES and COMPASS data on single-transverse spin asymmetries in semi-inclusive deeply inelastic scattering.
description: Contribution to the proceedings of "The International Workshop on Transverse Polarisation Phenomena in Hard Processes" (Transversity 2005), Villa Olmo (Como), 7-10th. September 2005
Satisfaction and Needs of Medical Students for Pre-clinical Teaching at Faculty of Medicine, Vajira Hospital, Navamindradhiraj University.
Creators: name: Waranya Imprasittichai
name: Anongnard Kasorn
Publisher: name: Text and Journal Publication
Year: 2019
Subjects: Teaching system
lecture base learning
problem base learning
team base learning (TBL)

description: Vajira Medical Journal, 63, 1, -
The shape distribution of asteroid families -- evidence for evolution driven by small impacts
Creators: name: Szabo, Gyula M.
name: Kiss, Laszlo L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A statistical analysis of brightness variability of asteroids reveals how their shapes evolve from elongated to rough spheroidal forms, presumably driven by impact-related phenomena. Based on the Sloan Digital Sky Survey Moving Object Catalog, we determined the shape distribution of 11,735 asteroids, with special emphasis on eight prominent asteroid families. In young families, asteroids have a wide range of shape elongations, implying fragmentation-formation. In older families we see an increasing number of rough spheroids, in agreement with the predictions of an impact-driven evolution. Old families also contain a group of moderately elongated members, which we suggest correspond to higher-density, more impact-resistant cores of former fragmented asteroids that have undergone slow shape erosion. A few percent of asteroids have very elongated shapes, and can either be young fragments or tidally reshaped bodies. Our results confirm that the majority of asteroids are gravitationally bound ``rubble piles''.
description: Accepted by Icarus. 22 pages, 1 table, 6 figures, 31 figure panels
On squares of sums of three cubes
Creators: name: Pliego, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11P05, 11P55

description: We show that almost every positive integer can be expressed as a sum of four squares of integers represented as the sums of three positive cubes.
description: 14 pages. To appear in Quarterly Journal of Mathematics
Kirchner, Hubert: Das Papsttum und der deutsche Katholizismus (1870 bis 1958)
Creators: name: Strauß, Gerhard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 4 (1993): Ökumenische Rundschau, Band 42, Heft 4
On Which Length Scales Can Temperature Exist in Quantum Systems?
Creators: name: Hartmann, Michael
name: Mahler, Guenter
name: Hess, Ortwin
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a regular chain of elementary quantum systems with nearest neighbor interactions and assume that the total system is in a canonical state with temperature $T$. We analyze under what condition the state factors into a product of canonical density matrices with respect to groups of $n$ subsystems each, and when these groups have the same temperature $T$. While in classical mechanics the validity of this procedure only depends on the size of the groups $n$, in quantum mechanics the minimum group size $n_{\text{min}}$ also depends on the temperature $T $! As examples, we apply our analysis to different types of Heisenberg spin chains.
description: To appear in: Proceedings of the SPQS conference, J. Phys. Soc. Jpn. 74 (2005) Suppl
title: Dagstuhl Reports, Table of Contents, Volume 8, Issue 1, 2018
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 8
subject: Issue 1
subject: 2018

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 8, Issue 1, pages i-ii
title: Safe Payments
Creators: name: Chiu, Jonathan
name: Davoodalhosseini, Seyed Mohammadreza
name: Jiang, Janet Hua
name: Zhu, Yu
Publisher: name: Bank of Canada
Year: 2020

description: Currently, there are two main types of payment instruments: cash and deposit-based electronic payments. Cash is a liability of the central bank and is perceived to be very safe. Deposits are liabilities of commercial banks; they are normally safe but are subject to default risk in times of crisis. As the economy becomes increasingly cashless, can we rely on the private sector to invest in the optimal level of safety in the electronic payment system?

We answer this question by modelling private incentives to invest in safety in a deposit-based payment system. Depositors can mitigate the risk in the system through monitoring to reduce the risk of default before it happens (ex ante) or through monitoring for timely detection of defaults after they’ve occurred (ex post). In addition, they can also set up a separate, safe account as a backup to receive funds from the risky account in a crisis situation.

We find that because depositors do not internalize the externalities in the payment system, the private sector can over- or under-adopt the use of safe accounts. However, governments could use taxes or subsidies to correct private incentives and restore the optimal adoption of safe accounts.
description: De nos jours, il existe deux principaux types d’instruments de paiement : l’argent comptant et les paiements électroniques effectués à partir des dépôts bancaires. L’argent comptant est un élément de passif de banque centrale et est perçu comme étant très sûr. Quant aux dépôts, ils constituent un élément de passif des banques commerciales. Ils sont habituellement sûrs, mais en temps de crise, ils sont exposés au risque de défaut. Alors que l’argent comptant est de moins en moins utilisé, peut-on se fier au secteur privé pour qu’il investisse de façon que les systèmes de paiement électronique atteignent leur niveau de sûreté optimal?

Nous répondons à cette question en modélisant des mesures destinées à inciter le secteur privé à investir dans la sûreté des systèmes de paiement basés sur les dépôts bancaires. Les déposants peuvent atténuer le risque lié à un système de paiement de deux façons : 1) en exerçant une surveillance en vue de réduire le risque de défaut avant que celui-ci ne survienne (surveillance ex ante) ou 2) en exerçant une surveillance afin de détecter rapidement un défaut après qu’il s’est produit (surveillance ex post). Les déposants peuvent aussi ouvrir un compte distinct et sûr comme solution de secours, afin de pouvoir y virer des fonds depuis leur compte à risque lors d’une crise.

Nous constatons que les agents privés, c’est-à-dire les déposants, peuvent être amenés à surutiliser ou sous-utiliser des comptes sûrs, car ils n’internalisent pas les externalités des systèmes de paiement. Cependant, les gouvernements peuvent recourir à des mesures fiscales ou à des subventions visant à corriger les incitations des agents privés afin que les comptes sûrs soient employés de manière optimale.
The 'Monster' House revisited: race and representations of urban change in Vancouver
Creators: name: Wang, Holman
Publisher: name: University of British Columbia
Year: 2009

description: In the last 15 years, urban change in Vancouver, British Columbia, has been broadly understood in racial terms. Media and academic treatments of landscape transformation have suggested that Vancouver, as a 'gateway city' to the Pacific Rim, will inevitably experience Asian-lead change, economism, and 'creative destruction'. Oppositely, white Canadians are often portrayed as the defenders of tradition, the environment, and Vancouver 'as is'. The epithet 'monster' house, used to describe large, new, and predominandy Chinese-owned houses in Vancouver's elite Anglo neighborhoods, evidences how built form has been strongly correlated with the concepts of race and culture in popular representations of landscape. This thesis problematizes these essentialist, race-driven narratives by examining the ways in which textual representations of urban change are embedded within existing relations of power, particularly taken-for-granted subject-object looking relations.
An Elliptic Yangian-Invariant, `Leading Singularity'
Creators: name: Bourjaily, Jacob L.
name: Kalyanapuram, Nikhil
name: Langer, Cameron
name: Patatoukos, Kokkimidis
name: Spradlin, Marcus
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive closed formulae for the first examples of non-algebraic, elliptic `leading singularities' in planar, maximally supersymmetric Yang-Mills theory and show that they are Yangian-invariant.
description: 4+2 pages; 2 figures. Ancillary files include computer-usable formulae
Besier, Gerhard: Der SED-Staat und die Kirche
Creators: name: Heidingsfeld, Uwe-Peter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 4 (1993): Ökumenische Rundschau, Band 42, Heft 4
title: Dagstuhl Reports, Table of Contents, Volume 8, Issue 2, 2018
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 8
subject: Issue 2
subject: 2018

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 8, Issue 2, pages i-ii
Orthodox Quantum Mechanics Free from Paradoxes
Creators: name: Medina, Rodrigo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A formulation of quantum mechanics based on an operational definition of state is presented. This formulation, which includes explicitly the macroscopic systems, assumes the probabilistic interpretation and is nevertheless objective. The classical paradoxes of quantum mechanics are analyzed and their origin is found to be the fictitious properties that are usually attributed to quantum-mechanical states. The hypothesis that any mixed state can always be considered as an incoherent superposition of pure states is found to contradict quantum mechanics. A solution of EPR paradox is proposed. It is shown that entanglement of quantum states is compatible with realism and locality of events, but implies non-local encoding of information.
description: 21 pages plain TeX
Using math in physics -- Overview
Creators: name: Redish, Edward F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The key difference between math as math and math in science is that in science we blend our physical knowledge with our knowledge of math. This blending changes the way we put meaning to math and even to the way we interpret mathematical equations. Learning to think about physics with math instead of just calculating involves a number of general scientific thinking skills that are often taken for granted (and rarely taught) in physics classes. In this paper, I give an overview of my analysis of these additional skills. I propose specific tools for helping students develop these skills in subsequent papers.
description: 6 pages, 2 figures
Greschat, Martin (hrsg.): Christentum und Demokratie im 20. Jahrhundert
Creators: name: Motikat, Lutz
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 42 Nr. 4 (1993): Ökumenische Rundschau, Band 42, Heft 4
The colours of Virgo dEs as seen by SDSS
Creators: name: Lisker, Thorsten
name: Grebel, Eva K.
name: Binggeli, Bruno
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A colour analysis of a carefully selected sample of over 200 Virgo cluster dEs and 8 giant ellipticals (Es) in the SDSS yields the following results: a) the nucleated dEs (dENs) follow a tight colour-magnitude relation (CMR) which does not broaden significantly at fainter (Mr > -15) magnitudes, b) the CMR of dENs smoothly transitions to the CMR of Es, but the latter changes its slope at about Mr = -20, c) the brighter dENs are consistent with ages of t > 5Gyr and a decrease of metallicity towards fainter magnitudes, but a possible additional luminosity-age relation is not ruled out, d) it is crucial to treat dS0s separately from dEs since their different colour properties would otherwise bias the comparison of nucleated and non-nucleated dEs (dEnoNs), e) the dEnoNs show a weak trend towards bluer colours than dENs.
description: 3 pages + 3 figures; to appear in the proceedings of the IAUC198 "Near-Field Cosmology with Dwarf Elliptical Galaxies", H. Jerjen & B. Binggeli (eds.); replaced with revised version after finding that the SDSS photometric pipeline overestimated the sky flux - the conclusions remain unchanged though; feel free to contact the authors for further details; additional minor correction in Fig. 3
NUV-IR colours of red sequence galaxies in local clusters
Creators: name: Rawle, Timothy D.
name: Smith, Russell J.
name: Lucey, John R.
name: Hudson, Michael J.
name: Wegner, Gary A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present GALEX near-UV (NUV) and 2MASS J band photometry for red sequence galaxies in local clusters. We define quiescent samples according to a strict emission threshold, removing galaxies with very recent star formation. We analyse the NUV-J colour-magnitude relation (CMR) and find that the intrinsic scatter is an order of magnitude larger than for the analogous optical CMR (~0.35 rather than 0.05 mag), in agreement with previous studies. Comparing the NUV-J colours with spectroscopically-derived stellar population parameters, we find a strong (> 5.5sigma) correlation with metallicity, only a marginal trend with age, and no correlation with the alpha/Fe ratio. We explore the origin of the large scatter and conclude that neither aperture effects nor the UV upturn phenomenon contribute significantly. We show that the scatter could be attributed to simple `frosting' by either a young or a low metallicity subpopulation.
description: 11 pages, 14 figures. Accepted for publication in MNRAS
The properties of attractors of canalyzing random Boolean networks
Creators: name: Paul, U.
name: Kaufman, V.
name: Drossel, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study critical random Boolean networks with two inputs per node that contain only canalyzing functions. We present a phenomenological theory that explains how a frozen core of nodes that are frozen on all attractors arises. This theory leads to an intuitive understanding of the system's dynamics as it demonstrates the analogy between standard random Boolean networks and networks with canalyzing functions only. It reproduces correctly the scaling of the number of nonfrozen nodes with system size. We then investigate numerically attractor lengths and numbers, and explain the findings in terms of the properties of relevant components. In particular we show that canalyzing networks can contain very long attractors, albeit they occur less often than in standard networks.
description: 9 pages, 8 figures
Lorentz Violation and the Yukawa Potential
Creators: name: Altschul, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze Lorentz violations in the bosonic sector of a Yukawa-type quantum field theory. The nonrelativistic potential may be determined to all orders in the Lorentz violation, and we find that only specific types of modifications to the normal Yukawa potential can be generated. The influence of this modified potential on scattering and bounds states is calculated. These results could be relevant to the search for new macroscopic forces, which may not necessarily be Lorentz invariant.
description: 10 pages