cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A modern review of the two-level approximation
Creators: name: Frasca, Marco
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The paradigm of the two-level atom is revisited and its perturbative analysis is discussed in view of the principle of duality in perturbation theory. The models we consider are a two-level atom and an ensemble of two-level atoms both interacting with a single radiation mode. The aim is to see how the latter can be actually used as an amplifier of quantum fluctuations to the classical level through the thermodynamic limit of a very large ensemble of two-level atoms [M. Frasca, Phys. Lett. A {\bf 283}, 271 (2001)] and how can remove Schrödinger cat states. The thermodynamic limit can be very effective for producing both classical states and decoherence on a quantum system that evolves without dissipation. Decoherence without dissipation is indeed an effect of a single two-level atom interacting with an ensemble of two-level atoms, a situation that proves to be useful to understand recent experiments on nanoscale devices showing unexpected disappearance of quantum coherence at very low temperatures.
description: 20 pages, no figures. Revised version accepted for publication in Annals of Physics
On planar fermions with quartic interaction at finite temperature and density
Creators: name: Cabra, D. C.
name: Rossini, G. L.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the breaking of parity symmetry in the 2+1 Gross-Neveu model at finite temperature with chemical potential $μ$, in the presence of an external magnetic field. We find that the requirement of gauge invariance, which is considered mandatory in the presence of gauge fields, breaks parity at any finite temperature and provides for dynamical mass generation, preventing symmetry restoration for any non-vanishing $μ$. The dynamical mass becomes negligibly small as temperature is raised. We comment on the relevance of our observation for the gap generation of nodal quasi-particles in the pseudo-gap phase of high $T_c$ superconductors.
description: 5 pages REVTeX, 3 PostScript figures included using epsf.sty
MOESM2 of A realist evaluation to identify contexts and mechanisms that enabled and hindered implementation and had an effect on sustainability of a lean intervention in pediatric healthcare
Creators: name: Flynn, Rachel
name: Rotter, Thomas
name: Hartfield, Dawn
name: Newton, Amanda
name: Scott, Shannon
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 2. CMOc visual model.
Effect of hyperon bulk viscosity on neutron-star r-modes
Creators: name: Lindblom, Lee
name: Owen, Benjamin J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Neutron stars are expected to contain a significant number of hyperons in addition to protons and neutrons in the highest density portions of their cores. Following the work of Jones, we calculate the coefficient of bulk viscosity due to nonleptonic weak interactions involving hyperons in neutron-star cores, including new relativistic and superfluid effects. We evaluate the influence of this new bulk viscosity on the gravitational radiation driven instability in the r-modes. We find that the instability is completely suppressed in stars with cores cooler than a few times 10^9 K, but that stars rotating more rapidly than 10-30% of maximum are unstable for temperatures around 10^10 K. Since neutron-star cores are expected to cool to a few times 10^9 K within seconds (much shorter than the r-mode instability growth time) due to direct Urca processes, we conclude that the gravitational radiation instability will be suppressed in young neutron stars before it can significantly change the angular momentum of the star.
description: final PRD version, minor typos etc corrected
MOESM3 of A realist evaluation to identify contexts and mechanisms that enabled and hindered implementation and had an effect on sustainability of a lean intervention in pediatric healthcare
Creators: name: Flynn, Rachel
name: Rotter, Thomas
name: Hartfield, Dawn
name: Newton, Amanda
name: Scott, Shannon
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 3. Interview quotes to support CMOcs.
On Dyakonov-Voigt surface waves guided by the planar interface of dissipative materials
Creators: name: Zhou, Chenzhang
name: Mackay, Tom G.
name: Lakhtakia, Akhlesh
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Dyakonov-Voigt (DV) surface waves guided by the planar interface of (i) material $A$ which is a uniaxial dielectric material specified by a relative permittivity dyadic with eigenvalues $ε^s_A$ and $ε^t_A$, and (ii) material $B$ which is an isotropic dielectric material with relative permittivity $ε_B$, were numerically investigated by solving the corresponding canonical boundary-value problem. The two partnering materials are generally dissipative, with the optic axis of material $A$ being inclined at the angle $χ\in [ 0^\circ, 90^\circ ]$ relative to the interface plane. No solutions of the dispersion equation for DV surface waves exist when $χ=90^\circ$. Also, no solutions exist for $χ\in ( 0^\circ, 90^\circ )$, when both partnering materials are nondissipative. For $χ\in [ 0 ^\circ, 90^\circ )$, the degree of dissipation of material $A$ has a profound effect on the phase speeds, propagation lengths, and penetration depths of the DV surface waves. For mid-range values of $χ$, DV surface waves with negative phase velocities were found. For fixed values of $ε^s_A$ and $ε^t_A$ in the upper-half-complex plane, DV surface-wave propagation is only possible for large values of $χ$ when $| ε_B|$ is very small.
Impacts of Public, Private, and R&D Investments on Total Factor Productivity Growth in Tunisian Agriculture
Creators: name: Dhehibi, Boubaker
name: Telleria, Roberto
name: Aw-Hassan, Aden
name: Dhehibi, Boubaker
name: Telleria, Roberto
name: Aw-Hassan, Aden
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Productivity Analysis
subject: Public & Private Investment
subject: Agriculture
subject: Tunisia
subject: Translog Production Function
subject: TFP

description: The paper analyzes the patterns of productivity and economic growth in Tunisian agriculture during the period 1981–2007. A regression approach is used to test the hypotheses that government-funded research, development and extension (RD&E), private and investment, terms of trade, and share of irrigated area are significant determinants of total factor productivity (TFP) in the agricultural sector. Results indicate that agricultural output experienced moderate annual growth between 1981 and 2007. Over the whole period, land and capital were found to be the most important contributors to productivity, and labour and livestock the least significant. TFP contribution to agricultural output was important in the 1980s, less important in the 1990s, and became significant again between 2001 and 2007. The findings show that TFP growth was the result of investments in the agricultural sector, with the use of intensive irrigated production systems and the adoption of new production technologies. We found significant negative cross-price elasticities between labour and capital suggesting that agricultural policies in the form of subsidies for agricultural machinery could be introduced without negatively affecting the agricultural labour force. Finally, Tunisian government should strengthen its domestic agricultural research system through a variety of policy tools that include joint public-private partnerships.
Brownian dynamics approach to interacting magnetic moments
Creators: name: Chubykalo, O.
name: Smirnov-Rueda, R.
name: Wongsam, M. A.
name: Chantrell, R. W.
name: Nowak, U.
name: Gonzalez, J. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The question how to introduce thermal fluctuations in the equation of motion of a magnetic system is addressed. Using the approach of the fluctuation-dissipation theorem we calculate the properties of the noise for both, the fluctuating field and fluctuating torque (force) representation. In contrast to earlier calculations we consider the general case of a system of interacting magnetic moments without the assumption of axial symmetry. We show that the interactions do not result in any correlations of thermal fluctuations in the field representation and that the same widely used formula can be used in the most general case. We further prove that close to the equilibrium where the fluctuation-dissipation theorem is valid, both, field and torque (force) representations coincide, being different far away from it.
Lattice model study of the thermodynamic interplay of polymer crystallization and liquid-liquid demixing
Creators: name: Hu, Wenbing
name: Frenkel, Daan
name: Mathot, Vincent B. F.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report Monte Carlo simulations of a lattice-polymer model that can account for both polymer crystallization and liquid-liquid demixing in solutions of semiflexible homopolymers. In our model, neighboring polymer segments can have isotropic interactions that affect demixing, and anisotropic interactions that are responsible for freezing. However, our simulations show that the isotropic interactions also have a noticeable effect on the freezing curve, as do the anisotropic interactions on demixing. As the relative strength of the isotropic interactions is reduced, the liquid-liquid demixing transition disappears below the freezing curve. A simple, extended Flory-Huggins theory accounts quite well for the phase behavior observed in the simulations.
description: Revtex, 7 pages, the content accepted by J. Chem. Phys
Alcochera Forster 1869
Creators: name: Sun, Shu-Ping
name: Li, Tao
name: Zong, Shi-Xiang
name: Sheng, Mao-Ling
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Alcochera

description: Alcochera Förster, 1869
 Alcochera Förster, 1869: 205. Type-species: Mesoleius nikkoensis Uchida; designated by Townes, Momoi, Townes, 1965.
 Diagnosis. Clypeus strongly convex in lateral view. Lower tooth of mandible distinctly longer than upper tooth. Notaulus usually present, short and weak. Mesopleuron polished or slightly mat, punctures small to medium size, without wrinkle. Areolet present. 1cu-a distal to 1/M by 0.1–0.3 × length of 1cu-a. Nervellus vertical or inclivous, 1-cu longer than cu-a. Lateromedian longitudinal carinae of propodeum usually more or less present; area petiolaris almost semicircular. First tergite widened posteriorly, latero-median carina (Figs 21) absent or short and weak; dorso-lateral carina present (Figs 22) between basal end of tergite to spiracle. Punctures on second tergite indistinct, fine to medium size.
 The genus can be distinguished from other genera of the tribe Mesoleiini by the key and figures given by Townes (1970) and Sheng et al. (2013).
description: Published as part of Sun, Shu-Ping, Li, Tao, Zong, Shi-Xiang & Sheng, Mao-Ling, 2021, The genus Alcochera Förster (Hymenoptera, Ichneumonidae, Ctenopelmatinae) in China with a key to world species, pp. 273-283 in Zootaxa 5023 (2) on page 274, DOI: 10.11646/zootaxa.5023.2.7, http://zenodo.org/record/5225942
title: Lignin-Based Mucus-Mimicking Antiviral Hydrogels with Enzyme Stability and Tunable Porosity
Creators: name: Chandna, Sanjam
name: Povolotsky, Tatyana L.
name: Nie, Chuanxiong
name: Schwartz, Sophia
name: Wedepohl, Stefanie
name: Quaas, Elisa
name: Ludwig, Kai
name: Boyakova, Yulia
name: Haag, Rainer
name: Block, Stephan
Publisher: name: Freie Universität Berlin
Year: 2025
Subjects: subject: lignin functionalization
subject: antivirals
subject: mucus-mimicking hydrogels
subject: tunable porosity
subject: enzyme stability
classificationCode: 540
subject: Chemie und zugeordnete Wissenschaften

description: Mucus is a complex hydrogel that acts as a defensive and protective barrier in various parts of the human body. The rise in the level of viral infections has underscored the importance of advancing research into mucus-mimicking hydrogels for the efficient design of antiviral agents. Herein, we demonstrate the gram-scale synthesis of biocompatible, lignin-based virus-binding inhibitors that reduce waste and ensure long-term availability. The lignin-based inhibitors are equipped with sulfate moieties, which are known binding partners for many viruses, including SARS-CoV-2 and herpes viruses. In addition, cross-linking the synthesized inhibitors yielded hydrogels that mimicked native mucus concerning surface functionality and rheology. The degree of sulfation exhibits a very strong impact on the mesh size distribution of the hydrogels, which provides a new means to fine-tune the steric and electrostatic contributions of the virus–hydrogel interaction. This feature strongly impacts the sequestration capability of the lignin-based hydrogels, which is demonstrated by infection inhibition assays involving human herpes simplex virus 1, influenza A viruses, and the bacterium Escherichia coli (E. coli). These measurements showed a reduction in plaque-forming units (HSV-1) and colony-forming units (E. coli) by more than 4 orders of magnitude, indicating the potent inhibition by the lignin-based hydrogels.
Superconductivity, phase fluctuations and the c-axis conductivity of bilayer high temperature superconductors
Creators: name: Shah, N.
name: Millis, A. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theory of the interplane conductivity of bilayer high temperature superconductors, focusing on the effect of quantal and thermal fluctuations on the oscillator strengths of the superfluid stiffness and the bilayer plasmon. We find that the opening of the superconducting gap and establishment of superconducting phase coherence each lead to redistribution of spectral weight over wide energy scales. The factor-of-two relation between the superfluid stiffness and the change below $T_c$ in the oscillator strength of the absorptive part of the conductivity previously derived for single-layer systems, is found to be substantially modified in bilayer systems.
description: 11 pages, 14 figures
Additional file 3 of Patient-derived cell lines and orthotopic mouse model of peritoneal carcinomatosis recapitulate molecular and phenotypic features of human gastric adenocarcinoma
Creators: name: Song, Shumei
name: Xu, Yan
name: Huo, Longfei
name: Zhao, Shuangtao
name: Wang, Ruiping
name: Li, Yuan
name: Scott, Ailing W.
name: Pizzi, Melissa Pool
name: Wang, Ying
name: Fan, Yibo
name: Harada, Kazuto
name: Jin, Jiankang
name: Ma, Lang
name: Yao, Xiaodan
name: Shanbhag, Namita D.
name: Gan, Qiong
name: Roy-Chowdhuri, Sinchita
name: Badgwell, Brian D.
name: Wang, Zhenning
name: Wang, Linghua
name: Ajani, Jaffer A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 3: Supplemental Table 1. Patients’ characteristics.
Machine-learning non-stationary noise out of gravitational wave detectors
Creators: name: Vajente, Gabriele
name: Huang, Yiwen
name: Isi, Maximiliano
name: Driggers, Jenne C.
name: Kissel, Jeffrey S.
name: Szczepanczyk, Marek J.
name: Vitale, Salvatore
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Signal extraction out of background noise is a common challenge in high precision physics experiments, where the measurement output is often a continuous data stream. To improve the signal to noise ratio of the detection, witness sensors are often used to independently measure background noises and subtract them from the main signal. If the noise coupling is linear and stationary, optimal techniques already exist and are routinely implemented in many experiments. However, when the noise coupling is non-stationary, linear techniques often fail or are sub-optimal. Inspired by the properties of the background noise in gravitational wave detectors, this work develops a novel algorithm to efficiently characterize and remove non-stationary noise couplings, provided there exist witnesses of the noise source and of the modulation. In this work, the algorithm is described in its most general formulation, and its efficiency is demonstrated with examples from the data of the Advanced LIGO gravitational wave observatory, where we could obtain an improvement of the detector gravitational wave reach without introducing any bias on the source parameter estimation.
MOESM6 of Type of screen time moderates effects on outcomes in 4013 children: evidence from the Longitudinal Study of Australian Children
Creators: name: Taren Sanders
name: Parker, Philip
name: Pozo-Cruz, Borja
name: Noetel, Michael
name: Lonsdale, Chris
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 6: Figure S3. Interactions and Quadratics.
MOESM7 of Type of screen time moderates effects on outcomes in 4013 children: evidence from the Longitudinal Study of Australian Children
Creators: name: Taren Sanders
name: Parker, Philip
name: Pozo-Cruz, Borja
name: Noetel, Michael
name: Lonsdale, Chris
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 7: Figure S4. Example plot of unadjusted linear and quadratic effects: social quality of life predicted by social screen time with original scale (left) and modified scale (right).
A pszichológia szerepvállalása a hippokratészi gondolat kiterjesztésében
Creators: name: Palatinus, Zsolt
Publisher: name: Eötvös Loránd Tudományegyetem Pedagógiai és Pszichológiai Kar
Year: 2021

description: Alkalmazott Pszichológia, vol. 21. issue 3. ISSN 1419-872X
Self-Interacting Dark Matter Halos and the Gravothermal Catastrophe
Creators: name: Balberg, Shmuel
name: Shapiro, Stuart L.
name: Inagaki, Shogo
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the evolution of an isolated, spherical halo of self-interacting dark matter (SIDM) in the gravothermal fluid formalism. We show that the thermal relaxation time, $t_r$, of a SIDM halo with a central density and velocity dispersion of a typical dwarf galaxy is significantly shorter than its age. We find a self-similar solution for the evolution of a SIDM halo in the limit where the mean free path between collisions, $λ$, is everywhere longer than the gravitational scale height, $H$. Typical halos formed in this long mean free path regime relax to a quasistationary gravothermal density profile characterized by a nearly homogeneous core and a power-law halo where $ρ\propto r^{-2.19}$. We solve the more general time-dependent problem and show that the contracting core evolves to sufficiently high density that $λ$ inevitably becomes smaller than $H$ in the innermost region. The core undergoes secular collapse to a singular state (the ``gravothermal catastrophe'') in a time $t_{coll} \approx 290 t_r$, which is longer than the Hubble time for a typical dark matter-dominated galaxy core at the present epoch. Our model calculations are consistent with previous, more detailed, N-body simulations for SIDM, providing a simple physical interpretation of their results and extending them to higher spatial resolution and longer evolution times. At late times, mass loss from the contracting, dense inner core to the ambient halo is significantly moderated, so that the final mass of the inner core may be appreciable when it becomes relativistic and radially unstable to dynamical collapse to a black hole.
description: ApJ in press (to appear in April), 12 pages. Extremely minor changes to agree with published version
Self-supervised learning for transferable representations
Creators: name: Ericsson, Linus
Publisher: name: The University of Edinburgh
Year: 2024
Subjects: self-supervised learning
representation learning
computer vision

description: Machine learning has undeniably achieved remarkable advances thanks to large labelled datasets and supervised learning. However, this progress is constrained by the labour-intensive annotation process. It is not feasible to generate extensive labelled datasets for every problem we aim to address. Consequently, there has been a notable shift in recent times toward approaches that solely leverage raw data. Among these, self-supervised learning has emerged as a particularly powerful approach, offering scalability to massive datasets and showcasing considerable potential for effective knowledge transfer. This thesis investigates self-supervised representation learning with a strong focus on computer vision applications. We provide a comprehensive survey of self-supervised methods across various modalities, introducing a taxonomy that categorises them into four distinct families while also highlighting practical considerations for real-world implementation. Our focus thenceforth is on the computer vision modality, where we perform a comprehensive benchmark evaluation of state-of-the-art self supervised models against many diverse downstream transfer tasks. Our findings reveal that self-supervised models often outperform supervised learning across a spectrum of tasks, albeit with correlations weakening as tasks transition beyond classification, particularly for datasets with distribution shifts. Digging deeper, we investigate the influence of data augmentation on the transferability of contrastive learners, uncovering a trade-off between spatial and appearance-based invariances that generalise to real-world transformations. This begins to explain the differing empirical performances achieved by self-supervised learners on different downstream tasks, and it showcases the advantages of specialised representations produced with tailored augmentation. Finally, we introduce a novel self-supervised pre-training algorithm for object detection, aligning pre-training with downstream architecture and objectives, leading to reduced localisation errors and improved label efficiency. In conclusion, this thesis contributes a comprehensive understanding of self-supervised representation learning and its role in enabling effective transfer across computer vision tasks.
MOESM1 of A realist evaluation to identify contexts and mechanisms that enabled and hindered implementation and had an effect on sustainability of a lean intervention in pediatric healthcare
Creators: name: Flynn, Rachel
name: Rotter, Thomas
name: Hartfield, Dawn
name: Newton, Amanda
name: Scott, Shannon
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 1. Interview Guide.
title: 03_0425
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Detailed Kinematic Study of the Ionized and Neutral Gas in the Complex of Star Formation in the Galaxy IC 1613
Creators: name: Lozinskaya, T. A.
name: Moiseev, A. V.
name: Podorvanyuk, N. Yu.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We carried out detailed kinematic studies of the complex of multiple HI and HII shells that represent the only region of ongoing star formation in the dwarf irregular galaxy IC 1613. We investigated the ionized-gas kinematics by using Fabry--Perot H-alpha observations with the 6-m Special Astrophysical Observatory telescope and the neutral-gas kinematics by using VLA 21-cm radio observations. We identified three extended (300-350 pc) neutral shells with which the brightest HII shells in the complex of star formation are associated. The neutral-gas kinematics in the complex has been studied for the first time and the H~I shells were found to expand at a velocity of 15--18 km/s. We constructed velocity ellipses for all HII shells in the complex and refined (increased) the expansion velocities of most of them. The nature of the interacting ionized and neutral shells is discussed.
description: 14 pages, 9 EPS-figures
Double quantum-dot engine fueled by entanglement between electron spins
Creators: name: Josefsson, Martin
name: Leijnse, Martin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The laws of thermodynamics allow work extraction from a single heat bath provided that the entropy decrease of the bath is compensated for by another part of the system. We propose a thermodynamic quantum engine that exploits this principle and consists of two electrons on a double quantum dot (QD). The engine is fueled by providing it with singlet spin states, where the electron spins on different QDs are maximally entangled, and its operation involves only changing the tunnel coupling between the QDs. Work can be extracted since the entropy of an entangled singlet is lower than that of a thermal (mixed) state, although they look identical when measuring on a single QD. We show that the engine is an optimal thermodynamic engine in the long-time limit. In addition, we include a microscopic description of the bath and analyze the engine's finite-time performance using experimentally relevant parameters.
CNN-Based PET Sinogram Repair to Mitigate Defective Block Detectors
Creators: name: Whiteley, William
name: Gregor, Jens
Publisher: name: arXiv
Year: 2019
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Positron emission tomography (PET) scanners continue to increase sensitivity and axial coverage by adding an ever expanding array of block detectors. As they age, one or more block detectors may lose sensitivity due to a malfunction or component failure. The sinogram data missing as a result thereof can lead to artifacts and other image degradations. We propose to mitigate the effects of malfunctioning block detectors by carrying out sinogram repair using a deep convolutional neural network. Experiments using whole-body patient studies with varying amounts of raw data removed are used to show that the neural network significantly outperforms previously published methods with respect to normalized mean squared error for raw sinograms, a multi-scale structural similarity measure for reconstructed images and with regard to quantitative accuracy.
description: Submitted to the Journal of Physics in Medicine and Biology
Equilibrium and stability properties of a coupled two-component Bose-Einstein condensate
Creators: name: Lin, Chi-Yong
name: de Passos, E. J. V.
name: Hussein, M. S.
name: Lee, Da-Shin
name: Piza, A. F. R. de Toledo
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The equilibrium and stability properties of a coupled two-component BEC is studied using a variational method and the one-dimensional model of Williams and collaborators. The variational parameters are the population fraction, translation and scaling transformation of the condensate densities, assumed to have a Gaussian shape. We study the equilibrium and stability properties as a function of the strength of the laser field and the traps displacement. We find many branches of equilibrium configurations, with a host of critical points. In all cases, the signature of the onset of criticality is the collapse of a normal mode which is a linear combination of the out of phase translation and an in phase breathing oscillation of the condensate densities. Our calculations also indicate that we have symmetry breaking effects when the traps are not displaced
description: 13 pages,3 figures
Comparative Study of Dense Bulk MgB$_2$ Materials Prepared by Different Methods
Creators: name: Narozhnyi, V. N.
name: Fuchs, G.
name: Handstein, A.
name: Gümbel, A.
name: Eckert, J.
name: Nenkov, K.
name: Hinz, D.
name: Gutfleisch, O.
name: Wälte, A.
name: Bogacheva, L. N.
name: Kostyleva, I. E.
name: Müller, K. -H.
name: Schultz, L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on the results of a comparative investigation of highly dense bulk MgB$_2$ samples prepared by three methods: (i) hot deformation; (ii) high pressure sintering; and (iii) mechanical alloying of Mg and B powders with subsequent hot compaction. All types of samples were studied by ac-susceptibility, dc-magnetization and resistivity measurements in magnetic fields up to $μ_0H=160$ kOe. A small but distinct anisotropy of the upper critical field $H_{c2}^{a,b}/H_{c2}^{c}\sim1.2$ connected with some texture of MgB$_2$ grains was found for the hot deformed samples. The samples prepared by high pressure sintering as well as by mechanical alloying show improved superconducting properties, including high upper critical fields $H_{c2}$ ($μ_0H_{c2}(0)\sim23$ T), irreversibility fields $H_{irr}$ which are strongly shifted towards higher values $H_{irr}(T)\sim0.8H_{c2}(T)$ and high critical current $J_c$ ($J_c=10^5$ A/cm$^2$ at 20 K and 1 T).
description: 3 pages including 6 figures. Presented at SCRM2002 conference. Submitted to the J. Supercond.: Inc. Novel Magnetism
title: An integral assessment of carbon and nitrogen emissions in dairy cattle production systems: Comparing dynamic process-based greenhouse gas emissions factors with IPCC Tier 1 and Tier 2 approaches in confinement and pasture-based systems
Creators: name: Ouatahar, Latifa
name: Amon, Barbara
name: Amon, Thomas
name: Zentek, Jürgen
name: Deng, Jia
name: Janke, David
name: Hempel, Sabrina
name: Beukes, Pierre
name: Van Der Weerden, Tony
Publisher: name: Freie Universität Berlin
Year: 2025
Subjects: subject: Dairy cattle
subject: Biogeochemical models
subject: IPCC methodology
subject: Manure-DNDC
subject: Model evaluation
subject: Tier 3 approach
classificationCode: 630
subject: Landwirtschaft und verwandte Bereiche

description: The assessment of greenhouse gases (GHG) and nitrogen (N) emissions is essential for climate change mitigation. The Intergovernmental Panel on Climate Change (IPCC) provides guidelines for GHG quantification at both national and global levels. However, the IPCC Tier 1 (T1) and Tier 2 (T2) estimates, mostly used in national inventories, rely on generic emission factors (EFs) and empirical equations that are not suitable for case-specific assessments on individual farms. Thus, a more advanced Tier 3 (T3) methodology is needed to reflect the impact of key factors on emissions and reveal the effect of emission mitigation measures. Here we compare the IPCC T1 and T2 estimates to results from a cascade of process-based (PB) models referred to as T3 approach, for farm-level emissions. The results showed that the estimates from PB models differ significantly from those of the IPCC T1 and T2 estimates and allow more capability to predict variation. Moreover, PB models account for temporal changes and the underlying mechanisms responsible for GHG and N emissions. These models can be adopted for case-specific GHG assessment and project future mitigation strategies under different climate scenarios, regional contexts and on-farm management. Additional to the known applicability of PB models to estimate enteric methane (CH4)and soil emissions, the present study demonstrates for the first time in Germany and Europe the effectiveness of Manure-DNDC model in simulating ammonia (NH3) and CH4 barn emissions, highlighting the potential for using PB models in case-specific GHG and N assessments for the whole manure management chain. Overall, this study presents options for a methodology in case-specific GHG assessment that can capture the effect of climate change and mitigation measures.
Center-Extraction-Based Three Dimensional Nuclei Instance Segmentation of Fluorescence Microscopy Images
Creators: name: Ho, David Joon
name: Han, Shuo
name: Fu, Chichen
name: Salama, Paul
name: Dunn, Kenneth W.
name: Delp, Edward J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Fluorescence microscopy is an essential tool for the analysis of 3D subcellular structures in tissue. An important step in the characterization of tissue involves nuclei segmentation. In this paper, a two-stage method for segmentation of nuclei using convolutional neural networks (CNNs) is described. In particular, since creating labeled volumes manually for training purposes is not practical due to the size and complexity of the 3D data sets, the paper describes a method for generating synthetic microscopy volumes based on a spatially constrained cycle-consistent adversarial network. The proposed method is tested on multiple real microscopy data sets and outperforms other commonly used segmentation techniques.
description: Presented at the IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI 2019)
Symmetries and Decoherence of Two-Component Confined Atomic Clouds: Study of the Atomic Echo in the two-component Bose-Einstein Condensate
Creators: name: Kuklov, A. B.
name: Chensincki, N.
name: Birman, Joseph L.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Implications of the internal symmetries on the dynamics of the trapped two-component atomic vapors are discussed. In the cases of $^{87}$Rb (bosons) as well as of $^{40}$K (fermions) trapped in the two hyperfine states, the intrinsic $su(2)$ symmetry can be realized with a very good precision. Such a symmetry protects the global operators, which are the generators of the symmetry, from any decoherence. The case of boson-fermion mixture is discussed as well. The role of external factors, breaking the symmetry, in inducing the decoherence of the global operators is considered. It is shown that, the loss of the correlations is not faster than the rates of the induced heating or losses, provided the noise is characterized by short correlation length. The case of the extrinsic long-ranged fluctuations is also considered. Intrinsic mechanisms of decoherence of the correlators of the condensate operators of the two-component condensate are analyzed. The atomic echo is discussed as a test for the reversibility of the phase diffusion effect. The intensity and the profile of the multiple echo are calculated numerically as well as analytically.
description: 22 pages, 3 eps figures. Submitted to 10th International Workshop on Laser Physics. Replaced with revised version: Discussion of finite temperatures is extended; typos are corrected; acknowledgements are added
A Framework for Measuring Weak-Lensing Magnification Using the Fundamental Plane
Creators: name: Freudenburg, Jenna K. C.
name: Huff, Eric M.
name: Hirata, Christopher M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxy-galaxy lensing is an essential tool for probing dark matter halos and constraining cosmological parameters. While galaxy-galaxy lensing measurements usually rely on shear, weak-lensing magnification contains additional constraining information. Using the fundamental plane (FP) of elliptical galaxies to anchor the size distribution of a background population is one method that has been proposed for performing a magnification measurement. We present a formalism for using the FP residuals of elliptical galaxies to jointly estimate the foreground mass and background redshift errors for a stacked lens scenario. The FP residuals include information about weak-lensing magnification $κ$, and therefore foreground mass, since to first order, nonzero $κ$ affects galaxy size but not other FP properties. We also present a modular, extensible code that implements the formalism using emulated galaxy catalogs of a photometric galaxy survey. We find that combining FP information with observed number counts of the source galaxies constrains mass and photo-z error parameters significantly better than an estimator that includes number counts only. In particular, the constraint on the mass is 17.0\% if FP residuals are included, as opposed to 27.7\% when only number counts are included. The effective size noise for a foreground lens of mass $M_H=10^{14}M_\odot$, with a conservative selection function in size and surface brightness applied to the source population, is $σ_{κ,\mathrm{eff}}=0.250$. We discuss the improvements to our FP model necessary to make this formalism a practical companion to shear analyses in weak lensing surveys.
Nonlinear gauge transformation for a class of Schroedinger equations containing complex nonlinearities
Creators: name: Kaniadakis, G.
name: Scarfone, A. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: Condensed Matter (cond-mat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a wide class of nonlinear canonical quantum systems described by a one-particle Schroedinger equation containing a complex nonlinearity. We introduce a nonlinear unitary transformation which permits us to linearize the continuity equation. In this way we are able to obtain a new quantum system obeying to a nonlinear Schroedinger equation with a real nonlinearity. As an application of this theory we consider a few already studied Schroedinger equations as that containing the nonlinearity introduced by the exclusion-inclusion principle, the Doebner-Goldin equation and others. PACS numbers: 03.65.-w, 11.15.-q
description: 3pages, two columns, RevTeX4, no figures
Nature of Dark Energy and Polarization Measurements
Creators: name: Mainini, R.
name: Colombo, L. P. L.
name: Bonometto, S. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High sensitivity polarization measures, on wide angular scales, together with data on anisotropy, can be used to fix DE parameters. In this paper, first of all, we aim to determine the sensitivity needed to provide significant limits. Our analysis puts in evidence that there is a class of DE models that polarization measures can possibly exclude soon. This class includes models with DE due to a Ratra-Peebles (RP) potential. Using a likelihood analysis, we show that it is possible to distinguish RP models from LCDM and other dynamical DE models, already with the sensitivity of experiments like SPOrt or WMAP, thanks to their negative TE correlation at low-l, when the optical depth tau is sufficiently large. On the contrary, fixing the energy scale Lambda for RP potentials or distinguishing between LCDM and other DE potentials requires a much lower pixel noise, that no planned polarization experiment will achieve. While reviewing this paper after the referee report, the first-year WMAP data were released. WMAP finds large positive anisotropy-polarization correlations at low l; this apparently excludes DE models with RP potentials.
description: 28 pages, 16 figures, to be published in New Astronomy; replaced with accepted version
Isauria dilucidella
Creators: name: Yepishin, Viktor
name: Khalaim, Yevhenii
name: Budashkin, Yuriy
name: Zhakov, Oleksandr
name: Mushynskyi, Vadym
name: Novytskyi, Sergiy
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Pyralidae
Isauria
Isauria dilucidella

description: Isauria dilucidella (Duponchel, 1836)
 Material examined. 1♀, Poltava reg., Kremenchuk distr., Staryi Khutor, at light, 10.VIII.2010 (Yu. Geryak) (VYe). 1♂, Kherson reg., Henichesk distr., Arabatska strilka, Shchaslyvtseve, 7–11.VIII.2014 (O. Bidzilya) (ZMKU). 1♂, Kherson reg., Skadovsk distr., 1,5 km SE Burkuty, steppe, 46°23’36”N 32°48’37”E, at light, 12–14.VII.2019 (V. Yepishin) (VYe). 1 ex., Odesa reg., Odesa distr., Gradenytsi, 25. VI.2015 (S. Novytskyi) (SN). 1♂, Odesa reg., Berezivka distr., SE vic. Ruska Slobidka, at light, 24.IV.2020 (S. Trotsenko). 1♂, Odesa reg., Odesa distr., NW vic. Roksolany, sandy bluffs above Dnistrovskyi Lyman, some steppe herbs, at light, 28. VI.2020 (all S. Trotsenko) (ST).
 Distribution: S and C Europe, N Africa, Turkey, Armenia, Syria, Lebanon, Iraq, Iran, Afghanistan, C Asia, Mongolia (Roesler 1973), Russia: C of European part, Middle and Lower Volga, Volgo-Don, W Caucasus regions, S Urals, S of W Siberia, Altai, Tyva, Buryatia, S of Yakutiya (Sinev et al. 2019); Ukraine: Chernihiv (Panasyura & Govorun 2011, 2012), Sumy (Govorun 2009; Govorun & Latyshev 2014), Ternopil (Toll 1939), Kharkiv (Govorun 2009; Guglya & Karolinskiy 2014, as Sciota hostilis (Stephens, 1834), misidentification; Karolinskiy et al. 2017, 2018), Mykolaiv (Obraztsov 1935b), Zaporizhzhia (Bidzilya et al. 2001), Donetsk (Pak & Yaroshenko 2001a, b), Luhansk (Pak 1998b; Pak & Yaroshenko 2001b; Geryak et al. 2013; Demyanenko 2019) regions and Crimea (Budashkin 2004), first records for Poltava, Kherson and Odesa regions.
description: Published as part of Yepishin, Viktor, Khalaim, Yevhenii, Budashkin, Yuriy, Zhakov, Oleksandr, Mushynskyi, Vadym & Novytskyi, Sergiy, 2021, New records of pyraloid moths (Lepidoptera: Pyraloidea) from different regions of Ukraine, pp. 366-388 in Zootaxa 5023 (3) on page 371, DOI: 10.11646/zootaxa.5023.3.3, http://zenodo.org/record/5226112