cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Kullback--Leibler Divergence of a Freely Cooling Granular Gas
Creators: name: Megías, Alberto
name: Santos, Andrés
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Finding the proper entropy-like Lyapunov functional associated with the inelastic Boltzmann equation for an isolated freely cooling granular gas is a still unsolved challenge. The original $H$-theorem hypotheses do not fit here and the $H$-functional presents some additional measure problems that are solved by the Kullback--Leibler divergence (KLD) of a reference velocity distribution function from the actual distribution. The right choice of the reference distribution in the KLD is crucial for the latter to qualify or not as a Lyapunov functional, the asymptotic "homogeneous cooling state" (HCS) distribution being a potential candidate. Due to the lack of a formal proof far from the quasielastic limit, the aim of this work is to support this conjecture aided by molecular dynamics simulations of inelastic hard disks and spheres in a wide range of values for the coefficient of restitution ($α$) and for different initial conditions. Our results reject the Maxwellian distribution as a possible reference, whereas they reinforce the HCS one. Moreover, the KLD is used to measure the amount of information lost on using the former rather than the latter, revealing a non-monotonic dependence with $α$.
description: 22 pages, 10 figures; v2: old Sec. 4 removed, two new figures added, plus some text changes
Making the Universe at 20 MeV
Creators: name: Elor, Gilly
name: McGehee, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a testable mechanism of low-scale baryogenesis and dark matter production in which neither baryon nor lepton number are violated. Charged $D$ mesons are produced out-of-equilibrium at tens of MeV temperatures. The $D$ mesons quickly undergo CP-violating decays to charged pions, which then decay into dark-sector leptons without violating lepton number. To transfer this lepton asymmetry to the baryon asymmetry, the dark leptons scatter on additional dark-sector states charged under lepton and baryon number. Amusingly, this transfer proceeds without electroweak sphalerons, which are no longer active at such low scales. We present two example models which can achieve this transfer while remaining consistent with current limits. The required amount of CP violation in charged $D$ meson decays, while currently allowed, will be probed by colliders. Additionally, the relevant decays of charged pions to dark-sector leptons have been constrained by the PIENU and PSI experiments and will be further explored in upcoming experiments.
description: 10+5 pages, 3 figures; v2: corrected PIENU bound (no change to results); v3: published in PRD with minor revisions (no change to results)
— Missive dal limbo. Lettere inedite di Florence MacKnight al barone Bettino Ricasoli (1869)
Creators: name: Salvadori, Diego
Publisher: name: Firenze University Press
Year: 2015
Subjects: autobiography; Bettino Ricasoli; Florence MacKnight; Gender Studies; letter writing

description: This article introduces a series of unpublished letters, held by the Archivio di Stato in Florence, written by Florence MacKnight to Baron Bettino Ricasoli and analyses how letter writing becomes a means of affirming feminine identity, by way of a different conception of maternity. The letters contribute to foregrounding Florence’s personality and biography and, furthermore, her relationship with the Florentine societal cultural context.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
Creators: name: Becattini, F.
name: Manninen, J.
name: Gazdzicki, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a detailed study of chemical freeze-out in p-p, C-C, Si-Si and Pb-Pb collisions at beam momenta of 158A GeV as well as Pb-Pb collisions at beam momenta of 20A, 30A, 40A and 80A GeV. By analyzing hadronic multiplicities within the statistical hadronization model, we have studied the parameters of the source as a function of the number of the participating nucleons and the beam energy. We observe a nice smooth behaviour of temperature, baryon chemical potential and strangeness under-saturation parameter as a function of energy and nucleus size. Interpolating formulas are provided which allow to predict the chemical freeze-out parameters in central collisions at centre-of-mass energies > 4.5 GeV and for any colliding ions. Specific discrepancies between data and model emerge in particle ratios in Pb-Pb collisions at SPS between 20A and 40A GeV of beam energy which cannot be accounted for in the considered model schemes.
description: 22 pages, 10 figures. References added and updated. Table corrected
High-Energy Unitarity and the Standard Model
Creators: name: White, Alan. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: High-energy unitarity is argued to select a special version of QCD as the strong interaction. Electroweak symmetry breaking has to be due to a new sextet quark sector - that will produce large cross-section effects at the LHC. The sextet sector embeds, uniquely, in a massless SU(5) theory that potentially generates the states and interactions of the Standard Model within a bound-state S-Matrix. Infra-red chirality transitions of the massless Dirac sea play an essential dynamical role.
description: Contributed to the Proceedings of the Gribov-75 Memorial Workshop
— Legami d’amore. Il diario inedito di Eleonora Rinuccini Corsini (1871-1872, 1881, 1883)
Creators: name: Fiume, Valentina
Publisher: name: Firenze University Press
Year: 2015
Subjects: Autobiography; Diary; Eleonora Rinuccini Corsini; Motherhood; Neri de’ Principi Corsini

description: This article introduces an unpublished diary (1883) of Eleonora Rinuccini, Neri Corsini’s wife, held by the Archivio Corsini in San Casciano. It does not follow the rules of the daily diary but in a few pages refers to important issues in the life of this educated woman.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Plathow, Michael: Heiliger Geist - Hoffnung der Schwachen
Creators: name: Krüger, Hanfried
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 1 (1986): Ökumenische Rundschau, Band 35, Heft 1
Nonlinear competition between asters and stripes in filament-motor-systems
Creators: name: Ziebert, Falko
name: Zimmermann, Walter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A model for polar filaments interacting via molecular motor complexes is investigated which exhibits bifurcations to spatial patterns. It is shown that the homogeneous distribution of filaments, such as actin or microtubules, may become either unstable with respect to an orientational instability of a finite wave number or with respect to modulations of the filament density, where long wavelength modes are amplified as well. Above threshold nonlinear interactions select either stripe patterns or periodic asters. The existence and stability ranges of each pattern close to threshold are predicted in terms of a weakly nonlinear perturbation analysis, which is confirmed by numerical simulations of the basic model equations. The two relevant parameters determining the bifurcation scenario of the model can be related to the concentrations of the active molecular motors and of the filaments respectively, which both could be easily regulated by the cell.
description: 13 pages, 7 figures
Dissipative dynamics at first-order quantum transitions
Creators: name: Di Meglio, Giovanni
name: Rossini, Davide
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the effects of dissipation on the quantum dynamics of many-body systems at quantum transitions, especially considering those of the first order. This issue is studied within the paradigmatic one-dimensional quantum Ising model. We analyze the out-of-equilibrium dynamics arising from quenches of the Hamiltonian parameters and dissipative mechanisms modeled by a Lindblad master equation, with either local or global spin operators acting as dissipative operators. Analogously to what happens at continuous quantum transitions, we observe a regime where the system develops a nontrivial dynamic scaling behavior, which is realized when the dissipation parameter $u$ (globally controlling the decay rate of the dissipation within the Lindblad framework) scales as the energy difference $Δ$ of the lowest levels of the Hamiltonian, i.e., $u\sim Δ$. However, unlike continuous quantum transitions where $Δ$ is power-law suppressed, at first-order quantum transitions $Δ$ is exponentially suppressed with increasing the system size (provided the boundary conditions do not favor any particular phase).
description: 14 pages, 7 figures. Final version
— Memoria degli affetti. Giulia e Gino Bartolini, un carteggio degli anni di guerra (1917-1919)
Creators: name: Fiume, Valentina
Publisher: name: Firenze University Press
Year: 2015
Subjects: Anna Maria Bartolini; First World War; Florence; Gino Bartolini; Giulia Bartolini

description: This article introduces a series of letters, held by the Archivio di Stato in Florence, between Gino and Giulia Bartolini, father and aunt of the Florentine artist Anna Maria Bartolini and analyses the importance of the reconstruction of Memory. The artist produced a printed edition of this correspondence, which includes the diary of Caporetto written by Gino Bartolini.

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 4 (2015)
Reconciling the Metallicity Distributions of Gamma-ray Burst, Damped Lyman-alpha, and Lyman-break Galaxies at z=3
Creators: name: Fynbo, Johan P. U.
name: Prochaska, J. Xavier
name: Sommer-Larsen, Jesper
name: Dessauges-Zavadsky, Miroslava
name: Moller, Palle
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We test the hypothesis that the host galaxies of long-duration gamma-ray bursts (GRBs) as well as quasar-selected damped Lyman-alpha (DLA) systems are drawn from the population of UV-selected star-forming, high-z galaxies (generally referred to as Lyman-break galaxies). Specifically, we compare the metallicity distributions of the GRB and DLA populations to simple models where these galaxies are drawn randomly from the distribution of star-forming galaxies according to their star-formation rate and HI cross-section respectively. We find that it is possible to match both observational distributions assuming very simple and constrained relations between luminosity, metallicity and HI sizes. The simple model can be tested by observing the luminosity distribution of GRB host galaxies and by measuring the luminosity and impact parameters of DLA selected galaxies as a function of metallicity. Our results support the expectation that GRB and DLA samples, in contrast to magnitude limited surveys, provide an almost complete census of z=3 star-forming galaxies that are not heavily dust-obscured.
description: 31 pages, 6 figures. Accepted for publication in ApJ
The counterparts of Local Group dwarf spheroidals in nearby clusters
Creators: name: Hilker, M.
name: Mieske, S.
name: Infante, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this contribution, we report on the discovery of dwarf spheroidals (dSphs) in the core of the Fornax cluster. Their photometric properties -- like magnitude, colour, surface brightness -- are very similar to those of Local Group dSphs. However, at a given total magnitude, dSphs in Fornax seem to be more extended than their Local Group counterparts. The membership of several dwarf galaxy candidates in Fornax has been confirmed by surface brightness fluctuation measurements on deep wide-field images taken with the Magellan telescope. The analysis of these images also confirms the flat faint end slope of the luminosity function for dSphs in Fornax which contradicts the expected large number of small dark matter halos connected to dwarf galaxies in LambdaCDM theory. Dwarf spheroidals have also been detected in the Hydra I and Centaurus cluster. A preliminary analysis of their photometric properties shows that they obey similar scaling relations as their counterparts in Fornax and the Local Group.
description: 4 pages, 4 figures, to appear in the proceedings of the IAUC198 "Near-Field Cosmology with Dwarf Elliptical Galaxies", H. Jerjen & B. Binggeli (eds.)
Turbulent relaxation after a quench in the Heisenberg model
Creators: name: Rodriguez-Nieva, Joaquin F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We predict the emergence of turbulent scaling in the quench dynamics of the two-dimensional Heisenberg model for a wide range of initial conditions and model parameters. In the isotropic Heisenberg model, we find that the spin-spin correlation function exhibits universal scaling consistent with a turbulent energy cascade. When the spin rotational symmetry is broken by an easy-plane exchange anisotropy, we find a dual cascade of energy and an emergent conserved charge associated to transverse magnetization fluctuations. The scaling exponents are estimated analytically and agree with numerical simulations using phase space methods. We also define the space of initial conditions (as a function of energy, magnetization, and spin number $S$) that lead to a turbulent cascade. The universal character of the cascade, insensitive to microscopic details or initial conditions, suggests that turbulence in spin systems can be broadly realized in cold atom and solid-state experiments.
description: 6+2 pages, 3+2 figures
Saica subinermis MOTS CLES Hussey 1953
Creators: name: María, Valentina Castro-Huertas
name: Melo, María Cecilia
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Reduviidae
Saica
Saica subinermis

description: Saica subinermis Hussey, 1953
(Figs 4 E-F; 5H; 8)
Saica subinermis Hussey, 1953: 64. — Maldonado Capriles 1990: 479 [cat.]. — Swanson 2020: 978 [cit.].
MATERIAL EXAMINED. — Holotype. Mexico • ♂; Michoacán: 12 ml.s Tzitzio on Huetamo rd.; 19°20’N, 100°50’W; 1050 m; 10.VII.1947; T. H. Hubbell / Holotype, Saica subinermis 1952, Hsy, Det. R. S. Hussey; UMMZ (high-resolution images, Fig. 4E, F).
DIAGNOSIS. — Body coloration reddish with basal half of femora and tibiae entirely orange (Fig. 4E, F); spines of humeral angles short (Fig. 4E); posteromedial process of pygophore medially concave with ramus laterally projected (Fig. 5H).
DISTRIBUTION. — Mexico (Hussey 1953) (Fig. 8).
REDESCRIPTION
Male
Macropterous. Measurements in Table 2.
Coloration (Fig. 4 E-F). Head: Reddish. Antenna orange. Labium reddish. Thorax: Reddish, apex of meso- and metanotal spines yellowish. Procoxal cavity, procoxa and protrochanter orange; profemur basally orange, apically reddish; proti - bia orange, basally reddish, protarsus orange; meso- and metalegs similar to proleg. Forewing yellowish with veins orange, pterostigma reddish. Abdomen: Orange, pygophore slightly darker.
Structure. Thorax (Fig. 4F): Humeral angle spines short, as long as their base. Mesonotal spine sinuous, near twice as long as its base. Protuberance of scutellum with apex slightly concave posteriorly, lateral margins not expanded in caudal view. Metanotal spine sinuous, nearly 0.5 times the length of mesonotal spine. Forewing with two closed cells, apex of outer discal cell extending as far as apex of pterostigma. Abdomen: Abdominal tergite 2 not conspicuously narrower than rest of abdomen. Genitalia: Posterior margin of ramus flat; posteromedial process of pygophore (mpp) deeply concaved medially (Fig. 5H); ramus angulated and projecting laterally, nearly twice as long as its base, apical region narrowed.
REMARKS
Saica subinermis is similar to S. apicalis, considering the short length of the thoracic spines of both species; but S. subinermis can be distinguished by the two closed cells on the forewing, the reddish pattern of the femora basally, the entirely orange tibiae, and laterally projected rami of pygophore. Species only known from the male holotype.
description: Published as part of María, Valentina Castro-Huertas & Melo, María Cecilia, 2024, Saica Amyot & Serville, 1843 (Reduviidae, Emesinae, Saicini): taxonomic revision and phylogenetic analysis with morphological characters, pp. 813-845 in Zoosystema 46 (32) on pages 830-834, DOI: 10.5252/zoosystema2024v46a32, http://zenodo.org/record/14532160
Reply to Entanglement split: "Comment on quantum secret sharing based on reusable Greenbergr-Horne-Zeilinger states as secure carriers"
Creators: name: Karimipour, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent comment, it has been shown that in a quantum secret sharing protocol proposed in [S. Bagherinezhad, V. Karimipour, Phys. Rev. {\bf A}, 67, 044302, (2003)], one of the receivers can cheat by splitting the entanglement of the carrier and intercepting the secret, without being detected. In this reply we show that a simple modification of the protocol prevents the receivers from this kind of cheating.
description: 5 pages, 1 figure
The Arcturus moving group
Creators: name: Williams, Mary Elaine Kathleen
Publisher: name: The Australian National University
Year: 2008
Subjects: subject: QB853.W55 2008
subject: Arcturus
subject: Stars Clusters
subject: Stars Formation
subject: Milky Way

description: The Arcturus moving group is a well-populated example of phase space substructure within the disk of our Galaxy. With its large rotational lag (V = -100 km/s{u207B}{u00B9}), metal poor nature ([Fe/H] ~ -0.6) and significant age (10 Gyr) it belongs to the Galaxy's thick disk. Traditionally regarded as the remains of a dissolved open cluster, it has recently been suggested to be a remnant of a satellite accreted by our Galaxy. We undertook a high-resolution spectroscopic abundance study of Arcturus group members and candidates to understand the origin of the group. Examining abundance of Fe, Mg, Ca, Ti, Cr, Ni, Zn, Ce, Nd, Sm and Gd for 134 stars we found the surprising result that the group is chemically similar to thick (and some thin) disk stars. After confirming the existence of the group via further kinematic studies using the Nordstr{u00F6}m et al. (2004), Schuster et al. (2006) and RAdial Velocity Experiment (RAVE) surveys (Steinmetz et al., 2006), we conclude that the group is most likely the result of a resonance with the bar of the Galaxy. This dynamical origin is consistent with our abundance results as well as the kinematical and spatial dependencies that the group exhibits. These results are motivation for further study to understand the dynamics involved in resonant behaviour with the Galaxy's bar.
Between Shor and Steane: A unifying construction for measuring error syndromes
Creators: name: Huang, Shilin
name: Brown, Kenneth R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fault-tolerant quantum error correction requires the measurement of error syndromes in a way that minimizes correlated errors on the quantum data. Steane and Shor ancilla are two well-known methods for fault-tolerant syndrome extraction. In this paper, we find a unifying construction that generates a family of ancilla blocks that interpolate between Shor and Steane. This family increases the complexity of ancilla construction in exchange for reducing the rounds of measurement required to fault-tolerantly measure the error. We then apply this construction to the toric code of size $L\times L$ and find that blocks of size $m\times m$ can be used to decode errors in $O(L/m)$ rounds of measurements. Our method can be applied to any Calderbank-Shor-Steane codes and presents a new direction for optimizing fault-tolerant quantum computation.
Do you want high quality subseasonal streamflow forecasts? Ask MuTHRE! vEGU 2021 Conference Presentation
Creators: name: Thyer, Mark
name: McInerney, David
name: Kavetski, Dmitri
name: Laugesen, Richard
name: Tuteja, Narendra
Publisher: name: The University of Adelaide
Year: 2021
Subjects: classificationCode: 400513
subject: Water resources engineering
classificationCode: 370704
subject: Surface water hydrology
classificationCode: 370799
subject: Hydrology not elsewhere classified

description: Sub-seasonal
streamflow forecasts (with lead times of 1-30 days) provide valuable
information for many consequential water resource management decisions,
including reservoir operation to meet environmental flow and irrigation
demands, issuance of early flood warnings, and others. A key aim is to produce
“seamless” forecasts, with high quality performance across the full range of
lead times and time scales. This
presentation introduces the Multi-Temporal Hydrological Residual Error
model (MuTHRE) to address the challenge of obtaining “seamless”
sub-seasonal forecasts, i.e., daily forecasts with consistent high-quality
performance over multiple lead times (1-30 days) and aggregation scales (daily
to monthly). The model is designed to overcome common errors in streamflow
forecasts: (1) Seasonality (2) dynamic biases due to hydrological
non-stationarity (3) extreme errors poorly represented
by the common Gaussian distribution.

The model
is evaluated comprehensively over 11 catchments in the Murray-Darling Basin,
Australia, using multiple performance metrics to scrutinize forecast
reliability, sharpness and bias, across a range of lead times, months and
years, at daily and monthly time scales.

The MuTHRE model provides ”high”
improvements, in terms of reliability for (1) Short lead times (up to 10 days),
due to representing non-Gaussian errors (2) Stratified by month, due to
representing seasonality in hydrological errors (3) Dry years, due to representing
dynamic biases in hydrological errors.

Forecast
performance also improved in terms of sharpness, volumetric bias and CRPS skill
score; Importantly, improvements are consistent across multiple time scales
(daily and monthly).

This study
highlights the benefits of modelling multiple temporal characteristics of
hydrological errors, and demonstrates the power of the MuTHRE model for
producing seamless sub-seasonal streamflow forecasts that can be utilized for a
wide range of applications.
Konferenz europäischer Kirchen: Ehre sei Gott und auf Erden Frieden
Creators: name: Kemper, Claus
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 1 (1986): Ökumenische Rundschau, Band 35, Heft 1
การระบุผู้ต้องสงสัยจากรูปแบบในประวัติการโทร
Creators: name: ยศวีร์  ล่องทอง  รุจ  เอกะวิภาต  ธนัสนี  เพียรตระกูล  และลลิตา  นฤปิยะกุล
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Call log analysis, Phone tracking, Calling pattern

description: 2, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
Gauge-invariant metric fluctuations from NKK theory of gravity: de Sitter expansion
Creators: name: Aguilar, Jose Edgar Madriz
name: Anabitarte, Mariano
name: Bellini, Mauricio
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we study gauge-invariant metric fluctuations from a Noncompact Kaluza-Klein (NKK) theory of gravity in a de Sitter expansion. We recover the well known result $δρ/ρ\simeq 2Φ$, obtained from the standard 4D semiclassical approach to inflation. The spectrum for these fluctuations should be dependent of the fifth (spatial-like) coordinate.
description: version accepted in Phys. Lett. B
Character formulae for classical groups
Creators: name: Frenkel, P. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G05

description: We give formulae relating the value of an irreducible character of a classical group at a matrix to entries of powers of the matrix. This yields a far-reaching generalization of a result of J. L. Cisneros-Molina concerning the $GL_2$ case.
description: 8 pages
Schwinger Pair Production in SL$(2,\mathbb{C})$ Topologically Non-Trivial Fields via Non-Abelian Worldline Instantons
Creators: name: Copinger, Patrick
name: Morales, Pablo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Schwinger pair production is analyzed in a BPST instanton background and in its SL$(2,\mathbb{C})$ complex extension for complex scalar particles. A non-Abelian extension of the worldline instanton method is utilized, wherein Wong's equations in a coherent state picture adopted for SL$(2,\mathbb{C})$ are solved in Euclidean spacetime. While pair production is not predicted in the BPST instanton, a complex extension of the BPST instanton, existing as parallel fields in Minkowski spacetime, is shown to decay via the Schwinger effect.
description: 13 pages, 0 figures; version accepted for publication in Physical Review D
The effect of exercise intensity on post-exercise lung diffusion in highly trained athletes
Creators: name: Warren, Robert Scott
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to determine the effect of exercise intensity on the postexercise reduction of the diffusion capacity of carbon monoxide in the lung (DLco) and whether these declines were related to reductions in arterial oxyhemoglobin saturation (%Sa0₂) during exercise. Ten highly trained ( V0₂max = 66.8 ml-kg⁻¹-min⁻¹) males were recruited. Subjects performed a maximal cycling test to determine V0₂max and then returned on three separate occasions to perform ten minutes of submaximal cycling at 90%, 60%, and 30% of V0₂max . During each exercise session, expired gases, HR, and % S a 0 2 were recorded every fifteen seconds. DLco was measured prior to exercise (baseline) and one-hour following each of the exercise sessions. DLco was partitioned into its components of diffusion capacity of the alveolar membrane (DM) and pulmonary capillary blood volume (Vc) by measuring it at two concentrations of inspired 0₂ . DLco significantly declined from baseline following each of the submaximal exercise sessions. The reductions following the 60% and 30%> exercise sessions were similar but greater than the decline that occurred following the 90% exercise test. Reductions in post-exercise DLco were accompanied by declines in DM that reached statistical significance following the 90% and 60% tests, but not after the 30% submaximal exercise session. The decline in post-exercise Vc was also greatest following the 90% submaximal session and similar for each of the 60% and 30% tests. However, Vc reductions did not reach statistical significance following any of the exercise intensities (p=0.10). % S a 0 2 during 90% submaximal exercise declined significantly greater than both the 60% and 30% exercise tests, and all were decreased below baseline. No correlation was found between the post-exercise reductions in DLco, DM, or Vc, and % S a 0 2 at any of the exercise intensities. In summary, the results suggest that measurement of post-exercise DLco at different intensities of exercise does not reflect oxygen saturation levels during each test. Furthermore, the validity of using post-exercise measurements of DLco to indirectly implicate pulmonary edema as a mechanism of EIH is questionable.
Motion-based Camera Localization System in Colonoscopy Videos
Creators: name: Yao, Heming
name: Stidham, Ryan W.
name: Gao, Zijun
name: Gryak, Jonathan
name: Najarian, Kayvan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Optical colonoscopy is an essential diagnostic and prognostic tool for many gastrointestinal diseases, including cancer screening and staging, intestinal bleeding, diarrhea, abdominal symptom evaluation, and inflammatory bowel disease assessment. Automated assessment of colonoscopy is of interest considering the subjectivity present in qualitative human interpretations of colonoscopy findings. Localization of the camera is essential to interpreting the meaning and context of findings for diseases evaluated by colonoscopy. In this study, we propose a camera localization system to estimate the relative location of the camera and classify the colon into anatomical segments. The camera localization system begins with non-informative frame detection and removal. Then a self-training end-to-end convolutional neural network is built to estimate the camera motion, where several strategies are proposed to improve its robustness and generalization on endoscopic videos. Using the estimated camera motion a camera trajectory can be derived and a relative location index calculated. Based on the estimated location index, anatomical colon segment classification is performed by constructing a colon template. The proposed motion estimation algorithm was evaluated on an external dataset containing the ground truth for camera pose. The experimental results show that the performance of the proposed method is superior to other published methods. The relative location index estimation and anatomical region classification were further validated using colonoscopy videos collected from routine clinical practice. This validation yielded an average accuracy in classification of 0.754, which is substantially higher than the performances obtained using location indices built from other methods.
Recurrence plot statistics and the effect of embedding
Creators: name: March, T. K.
name: Chapman, S. C.
name: Dendy, R. O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Recurrence plots provide a graphical representation of the recurrent patterns in a timeseries, the quantification of which is a relatively new field. Here we derive analytical expressions which relate the values of key statistics, notably determinism and entropy of line length distribution, to the correlation sum as a function of embedding dimension. These expressions are obtained by deriving the transformation which generates an embedded recurrence plot from an unembedded plot. A single unembedded recurrence plot thus provides the statistics of all possible embedded recurrence plots. If the correlation sum scales exponentially with embedding dimension, we show that these statistics are determined entirely by the exponent of the exponential. This explains the results of Iwanski and Bradley (Chaos 8 [1998] 861-871) who found that certain recurrence plot statistics are apparently invariant to embedding dimension for certain low-dimensional systems. We also examine the relationship between the mutual information content of two timeseries and the common recurrent structure seen in their recurrence plots. This allows time-localized contributions to mutual information to be visualized. This technique is demonstrated using geomagnetic index data; we show that the AU and AL geomagnetic indices share half their information, and find the timescale on which mutual features appear.
Asynchronous Multi-View SLAM
Creators: name: Yang, Anqi Joyce
name: Cui, Can
name: Bârsan, Ioan Andrei
name: Urtasun, Raquel
name: Wang, Shenlong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Existing multi-camera SLAM systems assume synchronized shutters for all cameras, which is often not the case in practice. In this work, we propose a generalized multi-camera SLAM formulation which accounts for asynchronous sensor observations. Our framework integrates a continuous-time motion model to relate information across asynchronous multi-frames during tracking, local mapping, and loop closing. For evaluation, we collected AMV-Bench, a challenging new SLAM dataset covering 482 km of driving recorded using our asynchronous multi-camera robotic platform. AMV-Bench is over an order of magnitude larger than previous multi-view HD outdoor SLAM datasets, and covers diverse and challenging motions and environments. Our experiments emphasize the necessity of asynchronous sensor modeling, and show that the use of multiple cameras is critical towards robust and accurate SLAM in challenging outdoor scenes. For additional information, please see the project website at: https://www.cs.toronto.edu/~ajyang/amv-slam
description: 25 pages, 23 figures, 13 tables
Model of a cable routing for the PANDA-EMC forward endcap
Creators: name: Schnier, C.
name: Albrecht, M.
name: Fink, M.
name: Heinsius, F.
name: Held, T.
name: Holtmann, T.
name: Kümmel, M.
name: Kopf, B.
name: Leiber, S.
name: Musiol, P.
name: Pelizäus, M.
name: Pychy, J.
name: Schröder, T.
name: Sowa, C.
name: Steinke, M.
name: Triffterer, T.
name: Wiedner, U.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
From Farmers to Consumers: Vertical Coordination in the Food Industry
Creators: name: Martinez, Steve W.
name: Reed, Al
name: Martinez, Steve W.
name: Reed, Al
Publisher: name: Unknown
Year: 1996
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Industrial Organization
subject: Livestock Production/Industries
subject: Vertical coordination
subject: contract production
subject: vertical integration
subject: captive supplies
subject: industrialization

description: Vertical coordination refers to the allocation of resources across successive stages of a food supply system. Methods of coordination include open production, contract production, and vertical integration. With changes in consumer preferences for food products over the past several decades, open-market exchanges have given way to contract production and vertical integration. These developments may continue in the future as consumers demand specific product attributes and technological advances enable added control over farm product attributes and flows. Changes in methods of vertical coordination raise important policy issues.
Fermi liquid theory for heavy fermion superconductors without inversion symmetry : Magnetism and transport coefficients
Creators: name: Fujimoto, Satoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present the microscopic Fermi liquid theory for magnetic properties and transport phenomena in interacting electron systems without inversion symmetry both in the normal state and in the superconducting state. Our argument is mainly focused on the application to noncentrosymmetric heavy fermion superconductors. The transport coefficients for the anomalous Hall effect, the thermal anomalous Hall effect, the spin Hall effect, and magnetoelectric effects, of which the existence is a remarkable feature of parity violation, are obtained by taking into account electron correlation effects in a formally exact way. Moreover, we demonstrate that the temperature dependence of the spin susceptibility which consists of the Pauli term and van-Vleck-like term seriously depends on the details of the electronic structure. We give a possible explanation for the recent experimental result obtained by the NMR measurement of CePt$_3$Si [Yogi et al., J. Phys. Soc. Jpn.{\bf 75}, 013709 (2006)], which indicates no change of the Knight shift below the superconducting transition temperature for any directions of a magnetic field.
description: 18 pages, 11 figures
On collinear factorization of Wilson loops and MHV amplitudes in N=4 SYM
Creators: name: Komargodski, Zohar
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the (multi) Splitting function of Wilson loops and MHV gluon scattering S matrix elements in N=4 SYM. At strong coupling, one can utilize the methods of Alday and Maldacena and at weak coupling (one loop) the correspondence to light like Wilson loops is used. In both cases, the (multi) Splitting function corresponds to flattened cusps in the light like polygon, allowing for a clean disentanglement from the other gluons. We compute it in some cases and estimate some terms in other cases. We also prove the anomalous Ward identity of Drummond et al. in the strong coupling regime. Lastly, we briefly comment on a possible strategy for a proof of collinear factorization of Wilson loops at higher orders of perturbation theory.
description: 26 pages, 7 figures, JHEP format. v2: minor corrections. v3: minor improvements
Characterization of room-temperature in-plane magnetization in thin flakes of CrTe$_2$ with a single spin magnetometer
Creators: name: Fabre, F.
name: Finco, A.
name: Purbawati, A.
name: Hadj-Azzem, A.
name: Rougemaille, N.
name: Coraux, J.
name: Philip, I.
name: Jacques, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate room-temperature ferromagnetism with in-plane magnetic anisotropy in thin flakes of the CrTe$_2$ van der Waals ferromagnet. Using quantitative magnetic imaging with a single spin magnetometer based on a nitrogen-vacancy defect in diamond, we infer a room-temperature in-plane magnetization in the range of $M\sim 27$ kA/m for flakes with thicknesses down to $20$ nm. In addition, our measurements indicate that the orientation of the magnetization is not determined solely by shape anisotropy in micron-sized CrTe$_2$ flakes, which suggest the existence of a non-negligible magnetocrystalline anisotropy. These results make CrTe$_2$ a unique system in the growing family of van der Waals ferromagnets, as it is the only material platform known to date which offers an intrinsic in-plane magnetization and a Curie temperature above $300$ K in thin flakes.
description: 9 pages, 5 figures
UCDs in Fornax and Abell 1689
Creators: name: Mieske, S.
name: Hilker, M.
name: Infante, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review some properties of ultracompact dwarf galaxies (UCDs) in Fornax and of their brighter counterparts in Abell 1689, among which are two M32 twins, and discuss various possible UCD formation scenarios. We note that it is indispensable to carefully take into account the bright end of the globular cluster luminosity function when estimating the number density of UCDs. It is suggested that the search for more luminous UCDs in dense and rich galaxy clusters is the best way towards establishing UCDs as a new class of galaxies.
description: 4 pages, 2 figures, to appear in the proceedings of the IAUC198 "Near-Field Cosmology with Dwarf Elliptical Galaxies", H. Jerjen & B. Binggeli (eds.)
Development of the insulation for the PANDA-EMC
Creators: name: Leiber, S.
name: Albrecht, M.
name: Fink, M.
name: Heinsius, F.
name: Held, T.
name: Holtmann, T.
name: Kümmel, M.
name: Kopf, B.
name: Musiol, P.
name: Pelizäus, M.
name: Pychy, J.
name: Schnier, C.
name: Schröder, T.
name: Sowa, C.
name: Steinke, M.
name: Triffterer, T.
name: Wiedner, U.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Optimal Extraction of Cosmological Information from Supernova Data in the Presence of Calibration Uncertainties
Creators: name: Kim, Alex G.
name: Miquel, Ramon
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new technique to extract the cosmological information from high-redshift supernova data in the presence of calibration errors and extinction due to dust. While in the traditional technique the distance modulus of each supernova is determined separately, in our approach we determine all distance moduli at once, in a process that achieves a significant degree of self-calibration. The result is a much reduced sensitivity of the cosmological parameters to the calibration uncertainties. As an example, for a strawman mission similar to that outlined in the SNAP satellite proposal, the increased precision obtained with the new approach is roughly equivalent to a factor of five decrease in the calibration uncertainty.
description: 7 pages, 2 tables, no figures. Version to appear in Astroparticle Physics. Few typos fixed
Alternative experimental setup for hypernuclear spectroscopy at FRS / Super-FRS
Creators: name: Rappold, C.
name: Saito, T.
name: Scheidenberger, C.
name: Geissel, H.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
The CO White Dwarf + Intermediate Mass/Massive Star Binary Evolution: Possible Merger Origins for Peculiar Type Ia and II Supernovae
Creators: name: Ablimit, Iminhaji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Binary stellar evolution has been studied as important pathway to initiate various transient events like supernovae (SNe). Although the common envelope (CE) in a binary, outcomes of the CE and conditions for the SN explosion during the CE phase are uncertain, it has been suggested that SN explosions can be triggered during the CE phase. In this work, we explore formation and evolution routes of carbon/oxygen (CO) WDs binaries in order to investigate mergers of CO WDs and cores of non-degenerate stars during the CE phase as possible origins for SNe under the core merger detonation (CMD) scenario by considering several binary physical models. Evolution of CO WD + intermediate mass normal (non-degenerate and hydrogen-rich) star binaries lead to mergers during the CE phases still may trigger type Ia SNe (SNe Ia) interacting with circumstellar material under different models. Mergers between CO WDs and cores of He (non-degenerate and helium-rich) stars within the CE phases are rare comparing to other CE merger events. These two channels may produce peculiar SNe Ia such as over-luminous/super-chandrasekhar mass SNe Ia as certain fraction of them have combined core masses $\geq2M_\odot$. In the channel of CO WD + massive star ($\geq8M_\odot$) CE events, we find that rates of mergers between CO WDs and He cores of massive stars are (0.85 - 12.18)$\times10^{-5}{M_\odot}^{-1}$ which may initiate type II superluminous SNe like SN 2006gy, and delay times from this scenario are in the range of 34 - 120 Myr. Our results based on the CMD model are comparable with observational results of peculiar SNe.
description: 8 Figures, 3 Tables, Revised Version, Published in PASP
Experimental setup for hypernucleat study at the Super-FRS
Creators: name: Rappold, C.
name: Saito, T.
name: Scheidenberger, C.
name: Geissel, H.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Electric dipole moments at one-loop in the dimension-6 SMEFT
Creators: name: Kley, Jonathan
name: Theil, Tobias
name: Venturini, Elena
name: Weiler, Andreas
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: new physics
effective field theory
operator: dimension: 6
operator: renormalization
renormalization group
n: electric moment
lepton: electric moment

description: In this paper we present the complete expressions of the lepton and neutron electric dipole moments (EDMs) in the Standard Model Effective Field Theory (SMEFT), up to 1-loop and dimension-6 level and including both RG running contributions and finite corrections. The latter play a fundamental role in the cases of operators that do not renormalize the dipoles, but there are also classes of operators for which they provide an important fraction, $10-20\%$, of the total 1-loop contribution, if the new physics scale is around $\Lambda=5$ TeV. We present the full set of bounds on each individual Wilson coefficient contributing to the EDMs using both the current experimental constraints, as well as those from future experiments, which are expected to improve by at least an order of magnitude.
$k$-Minkowski-deformation of $U(1)$ gauge theory
Creators: name: Kupriyanov, V. G.
name: Kurkov, M.
name: Vitale, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct a non-commutative kappa-Minkowski deformation of U(1) gauge theory, following a general approach, recently proposed in JHEP 2008 (2020) 041. We obtain an exact (all orders in the non-commutativity parameter) expression for both the deformed gauge transformations and the deformed field strength, which is covariant under these transformations. The corresponding Yang-Mills Lagrangian is gauge covariant and reproduces the Maxwell Lagrangian in the commutative limit. Gauge invariance of the action functional requires a non-trivial integration measure which, in the commutative limit, does not reduce to the trivial one. We discuss the physical meaning of such a nontrivial commutative limit, relating it to a nontrivial space-time curvature of the undeformed theory. Moreover, we propose a rescaled kappa-Minkowski non-commutative structure, which exhibits a standard flat commutative limit.
description: 18 pages, 2 figures, Comment and two references added
A search for J^{PC}=1^{-+} exotic mesons in the pi- pi- pi+ and pi- pi0 pi0 systems
Creators: name: Dzierba, A. R.
name: Mitchell, R.
name: Szczepaniak, A. P.
name: Swat, M.
name: Teige, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A partial wave analysis (PWA) of the pi-pi-pi+ and pi-pi0pi0 systems produced in the reaction pi- p -> (3pi)-p at 18 GeV/c was carried out using an isobar model assumption. This analysis is based on 3.0M pi-pi0pi0 events and 2.6M pi-pi-pi+ events and shows production of the a2(1320), pi2(1670) and π(1800) mesons. An earlier analysis of 250K pi-pi-pi+ events from the same experiment showed possible evidence for a J^{PC}=1^{-+}$ exotic meson with a mass of 1.6 GeV/c^2 decaying into rho pi. In this analysis of a higher statistics sample of the (3pi)- system in two charged modes we find no evidence of an exotic meson.
description: 4 pages, 5 figures, added comment about the negative reflectivity exotic waves