cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Jet quenching and $γ$-jet correlation in high-energy heavy-ion collisions
Creators: name: Wang, Xin-Nian
name: Zhu, Yan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Medium modification of $γ$-tagged jets in high-energy heavy-ion collisions is investigated within a linearized Boltzmann transport model which includes both elastic parton scattering and induced gluon emission. In Pb+Pb collisions at $\sqrt{s}=2.76$ TeV, a $γ$-tagged jet is seen to lose 15\% of its energy at 0-10\% central collisions. Simulations also point to a sizable azimuthal angle broadening of $γ$-tagged jets at the tail of a distribution which should be measurable when experimental errors are significantly reduced. An enhancement at large $z_\text{jet}=p_L/E_{\text{jet}}$ in jet fragmentation function at the Large Hadron Collider (LHC) can be attributed to the dominance of leading particles in the reconstructed jet. A $γ-$tagged jet fragmentation function is shown to be more sensitive to jet quenching, therefore a better probe of the jet transport parameter.
description: 4 pages, 4 figures, typos corrected, Proceeding for "6th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2013)"
TEA-2020-0221.R1_Proof_hi.pdf
Creators: name: Ramamurthi, Anand
name: Carney, Sarah
name: Camardo, Andrew
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Abdominal aortic aneurysms (AAAs), a prototypic proteolytic
cardiovascular disorder, are localized expansions of the aortal wall.
Chronically upregulated and overexpressed proteases irreversibly degrade
and disrupt the elastic matrix, which provides stretch and recoil
properties to the aortal wall. Adult vascular smooth muscle cells are
inherently unable to produce sufficient elastin to form new elastic
fibers to naturally repair the aortal wall and the AAA continues to grow
until fatal rupture. Surgical intervention is reserved for AAAs with a
high risk of rupture, but there is currently no treatment for small,
still growing AAAs. We have previously developed matrix regenerative PEG-
PLGA nanoparticles (NPs) with pro-elastogenic and anti-proteolytic
properties that act synergistically with a released therapeutic. However,
strategies are required to effectively deliver these NPs to the disease
site to avail of these benefits. We have identified cathepsin K, a
protease overexpressed in AAA tissue, as a potential substrate for
antibody based active targeting. We sought to assess the safety and
biocompatibility of NPs with anti-cathepsin K antibodies conjugated to
the NP surface (cat K Ab-NPs) and then assess their biodistribution and
retention in both the targeted aorta and non-target organs in a rat AAA
model. In this work, we show that cat K Ab-NPs can selectively target the
aneurysmal aorta in a rat AAA model. However, there is unwanted NP uptake
and retention in non-target organs that can be addressed in future work.
Still, cathepsin K is a viable target for active delivery of NPs in an
AAA model.
TEA-2020-0221.R1_Proof_hi.pdf
Creators: name: Ramamurthi, Anand
name: Carney, Sarah
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Elastic fibers do not naturally regenerate in many proteolytic disorders, such as in abdominal aortic aneurysms, and prevent restoration of tissue homeostasis. We have shown drug-based attenuation of the stress activated protein kinase, JNK-2 to stimulate elastic matrix neoassembly and to attenuate cellular proteolytic activity. We now investigate if JNK2 gene knockdown with small interfering RNA (siRNA) provides greater specificity of action and improved regenerative/antiproteolytic outcomes in a proteolytic injury culture model of rat aneurysmal smooth muscle cells (EaRASMCs). A siRNA dose of 12.5 nM delivered with a transfection reagent significantly enhanced downstream elastic fiber assembly and maturation versus untreated EaRASMC cultures. The optimal siRNA dose was also delivered as a complex with a polymeric transfection vector, polyethyleneimine (PEI) in preparation for future in vivo delivery. Linear 25 kDa PEI-siRNA (5:1 molar ratio of amine to phosphate) and linear 40 kDa PEI-siRNA (2.5:1 ratio) were effective in downregulating the JNK2 gene, and significantly increasing expression of elastic fiber assembly proteins, and decreases in elastolytic matrix metalloprotease-2 versus treatment controls to significantly increase mature elastic fiber assembly. The current work has identified siRNA dosing and siRNA-PEI complexing conditions that are safe and efficient in stimulating processes contributing to improved elastic matrix neoassembly via JNK2 gene knockdown. The results represent a mechanistic basis of a broader therapeutic approach to reverse elastic matrix pathophysiology in tissue disorders involving aberrations of elastic matrix homeostasis, such as in aortic aneurysms.
Energetics of microwaves probed by double quantum dot absorption
Creators: name: Haldar, Subhomoy
name: Havir, Harald
name: Khan, Waqar
name: Lehmann, Sebastian
name: Thelander, Claes
name: Dick, Kimberly A.
name: Maisi, Ville F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore the energetics of microwaves interacting with a double quantum dot photodiode and show wave-particle aspects in photon-assisted tunneling. The experiments show that the single photon energy sets the relevant absorption energy in a weak-drive limit, which contrasts the strong drive limit where the wave amplitude determines the relevant-energy scale and opens up microwave induced bias triangles. The threshold condition between these two regimes is set by the fine-structure constant of the system. The energetics are determined here with the detuning conditions of the double dot system and stopping-potential measurements that constitute a microwave version of the photoelectric effect.
description: 5 pages 4 figures
James Clerk Maxwell : l’inventeur de l’électromagnétisme
Creators: name: Leconte, Marc
Publisher: name: SEE
Year: 2020

description: Au firmament de la science du XIXe siècle, se tient James Clerk Maxwell dont les découvertes ont été capitales pour le développement de la physique et ont ouvert la voie à Max Planck et Albert Einstein. Ses équations ont révolutionné le monde de la physique encore influencé par les concepts newtoniens. Il a contribué, plus que tout autre, à la formalisation du concept de champ. L’identification des phénomènes électromagnétique et optique qu’il a découverts ont marqué un pas important dans la volonté d’unification théorique de la physique. Sa vie entièrement dédiée à ses recherches a vu la disparition de ses proches et lui-même s’est éteint prématurément en 1879.
Generalised Lotka-Volterra model with hierarchical interactions
Creators: name: Poley, Lyle
name: Baron, Joseph W.
name: Galla, Tobias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In the analysis of complex ecosystems it is common to use random interaction coefficients, often assumed to be such that all species are statistically equivalent. In this work we relax this assumption by choosing interactions according to the cascade model, which we incorporate into a generalised Lotka-Volterra dynamical system. These interactions impose a hierarchy in the community. Species benefit more, on average, from interactions with species further below them in the hierarchy than from interactions with those above. Using dynamic mean-field theory, we demonstrate that a strong hierarchical structure is stabilising, but that it reduces the number of species in the surviving community, as well as their abundances. Additionally, we show that increased heterogeneity in the variances of the interaction coefficients across positions in the hierarchy is destabilising. We also comment on the structure of the surviving community and demonstrate that the abundance and probability of survival of a species is dependent on its position in the hierarchy.
description: 10 pages, 6 Figures
Les systèmes électriques insulaires français à l’avant-garde de la transition énergétique
Creators: name: Galléan, Gilles
Publisher: name: SEE
Year: 2020

description: Les territoires français électriquement isolés (quelques îles bretonnes et normandes, Corse, départements et collectivités d’outre-mer) représentent une population d’environ 2,5 millions d’habitants. Sur le plan de l’alimentation électrique, la majorité de ces territoires sont gérés par une direction d’EDF, EDF SEI, dont le responsable, nous explique comment leur spécificité est prise en compte et comment la transition énergétique y est pilotée.
Minimal Varieties and Identities of Relatively Free Algebras
Creators: name: Gonçalves, Dimas José
name: de Mello, Thiago Castilho
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R10

description: Let $K$ be a field of characteristic zero and let $\mathfrak{M}_5$ be the variety of associative algebras over $K$, defined by the identity $[x_1,x_2][x_3,x_4,x_5]$. It is well-known that such variety is a minimal variety and that is generated by the algebra $$A=\begin{pmatrix} E_0 & E\\ 0 & E\\ \end{pmatrix},$$ where $E=E_0\oplus E_1$ is the Grassmann algebra. In this paper, for any positive integer $k$, we describe the polynomial identities of the relatively free algebras of rank $k$ of $\mathfrak{M}_5$, \[F_k(\mathfrak{M}_5)=\dfrac{K\langle x_1,\dots, x_k \rangle}{K\langle x_1,\dots, x_k \rangle\cap T(\mathfrak{M}_5)}.\] It turns out that such algebras satisfy the same polynomial identities of some algebras used in the description of the subvarieties of $\mathfrak{M}_5$, given by Di Vincenzo, Drensky and Nardozza.
description: 19 pages, minor corrections
Higher Dimensional Effective Operators for Direct Dark Matter Detection
Creators: name: Krauss, Martin B.
name: Morisi, Stefano
name: Porod, Werner
name: Winter, Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss higher dimensional effective operators describing interactions between fermionic dark matter and Standard Model particles. They are typically suppressed compared to the leading order effective operators, which can explain why no conclusive direct dark matter detection has been made so far. The ultraviolet completions of the effective operators, which we systematically study, require new particles. These particles can potentially have masses at the TeV scale and can therefore be phenomenologically interesting for LHC physics. We demonstrate that the lowest order options require Higgs-portal interactions generated by dimension six operators. We list all possible tree-level completions with extra fermions and scalars, and we discuss the LHC phenomenology of a specific example with extra heavy fermion doublets.
description: 27 pages, 11 figures, 3 tables
La transition énergétique dans les îles de l’océan Indien
Creators: name: Doulet, Alain
Publisher: name: SEE
Year: 2020

description: En termes démographiques, économiques ou politiques, les îles de l’océan Indien présentent une grande diversité. Cela rend d’autant plus intéressant le témoignage d’Alain Doulet, en charge d’animer la collaboration qu’elles ont décidé de développer entre elles dans le domaine de la transition énergétique.
Single-shot security for one-time memories in the isolated qubits model
Creators: name: Liu, Yi-Kai
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: One-time memories (OTM's) are simple, tamper-resistant cryptographic devices, which can be used to implement sophisticated functionalities such as one-time programs. Can one construct OTM's whose security follows from some physical principle? This is not possible in a fully-classical world, or in a fully-quantum world, but there is evidence that OTM's can be built using "isolated qubits" -- qubits that cannot be entangled, but can be accessed using adaptive sequences of single-qubit measurements. Here we present new constructions for OTM's using isolated qubits, which improve on previous work in several respects: they achieve a stronger "single-shot" security guarantee, which is stated in terms of the (smoothed) min-entropy; they are proven secure against adversaries who can perform arbitrary local operations and classical communication (LOCC); and they are efficiently implementable. These results use Wiesner's idea of conjugate coding, combined with error-correcting codes that approach the capacity of the q-ary symmetric channel, and a high-order entropic uncertainty relation, which was originally developed for cryptography in the bounded quantum storage model.
description: v2: to appear in CRYPTO 2014. 21 pages, 3 figures
Transformer Quantum State: A Multi-Purpose Model for Quantum Many-Body Problems
Creators: name: Zhang, Yuan-Hang
name: Di Ventra, Massimiliano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Inspired by the advancements in large language models based on transformers, we introduce the transformer quantum state (TQS): a versatile machine learning model for quantum many-body problems. In sharp contrast to Hamiltonian/task specific models, TQS can generate the entire phase diagram, predict field strengths with experimental measurements, and transfer such a knowledge to new systems it has never been trained on before, all within a single model. With specific tasks, fine-tuning the TQS produces accurate results with small computational cost. Versatile by design, TQS can be easily adapted to new tasks, thereby pointing towards a general-purpose model for various challenging quantum problems.
description: 12 pages, 13 figures
Crystalline phases at finite winding densities in a quantum link ladder
Creators: name: Stornati, Paolo
name: Krah, Philipp
name: Jansen, Karl
name: Banerjee, Debasish
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Condensed matter physics of gauge theories coupled to fermions can exhibit a rich phase structure, but are nevertheless very difficult to study in Monte Carlo simulations when they are afflicted by a sign problem. As an alternate approach, we use tensor network methods to explore the finite density physics of Abelian gauge theories without dynamical matter. As a concrete example, we consider the U(1) gauge invariant quantum link ladder with spin-1/2 gauge fields in an external electric field which cause the winding electric fluxes to condense in the ground state. We demonstrate how the electric flux tubes arrange themselves in the bulk giving rise to crystalline patterns, whose period can be controlled by tuning the external field. We propose observables to detect the transitions in ground state properties not only in numerical experiments, but also in future cold-atom realizations. A systematic procedure for reaching the thermodynamic limit, as well as extending the studies from ladders to extended geometries is outlined.
description: 8 pages, 7 figures
La gestion de l’équilibre entre l’offre et la demande dans les zones non interconnectées
Creators: name: Rosso, Denis
name: Lévy, Vincent
Publisher: name: SEE
Year: 2020

description: Combiner décarbonation de l’énergie et sécurité de l’alimentation dans un système électrique de dimension modeste est un défi majeur. Cet article décrit les méthodes mises en œuvre par EDF pour y parvenir dans les systèmes électriques insulaires qu’elle gère.
AG2U -- Autonomous Grading Under Uncertainties
Creators: name: Miron, Yakov
name: Goldfracht, Yuval
name: Ross, Chana
name: Di Castro, Dotan
name: Klein, Itzik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Surface grading, the process of leveling an uneven area containing pre-dumped sand piles, is an important task in the construction site pipeline. This labour-intensive process is often carried out by a dozer, a key machinery tool at any construction site. Current attempts to automate surface grading assume perfect localization. However, in real-world scenarios, this assumption fails, as agents are presented with imperfect perception, which leads to degraded performance. In this work, we address the problem of autonomous grading under uncertainties. First, we implement a simulation and a scaled real-world prototype environment to enable rapid policy exploration and evaluation in this setting. Second, we formalize the problem as a partially observable markov decision process and train an agent capable of handling such uncertainties. We show, through rigorous experiments, that an agent trained under perfect localization will suffer degraded performance when presented with localization uncertainties. However, an agent trained using our method will develop a more robust policy for addressing such errors and, consequently, exhibit a better grading performance.
description: 8 Pages
D1.8 2nd Yearly summary report on highlights of European Polar Research
Creators: name: Schöner, Wolfgang
name: Biebow, Nicole
name: Strobel, Anneli
Publisher: name: Zenodo
Year: 2022
Subjects: Highlights
EU-PolarNet 2
Polar
Research

description: The polar regions are key regions of the Earth system and climate change, but European polar research currently consists of a multitude of organisations and individual activities. The HORIZON 2020 project EU-PolarNet 2 aims to overcome this initial situation and to coordinate and consolidate European polar research. This 2nd annual report on European polar research highlights presents a selection of contributions to Europe's polar research in the second year of EU-PolarNet 2. The highlights reports are organised into 4 overarching themes: European Research Highlights in the Arctic, European Research Highlights in the Antarctic, Promoting Polar Research and Conference Highlights.
Microgrids insulaires : objectif 100 % d’EnR
Creators: name: Radvanyi, Etienne
name: Bénavent, Fabien
Publisher: name: SEE
Year: 2020

description: De 100% fioul à 100% énergies renouvelables, la transition énergétique des micro-réseaux français est désormais lancée. Retour sur les projets pionniers.
Les îles, terres d’innovation
Creators: name: Ghirardi, Claire Marie
name: Lafuma, Marion
name: Schmutz, Nicolas
name: Saincy, Nicolas
Publisher: name: SEE
Year: 2020

description: Pour illustrer le dynamisme des populations insulaires face à la nécessité vitale de la transition énergétique, trois projets marquants développés dans l’océan Indien sont présentés ici.
Neurodevelopment of social and asocial threat learning
Creators: name: Armita Golkar
name: Kastrati, Granit
name: Määttä, Jessica
name: Armita Golkar
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Developmental Psychology
subject: Life Sciences
subject: Social Psychology
subject: Neuroscience and Neurobiology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: We will begin data collection in November 2023, with N=200 children aged 9-16. We will assess implicit and explicit emotion regulation while in MRI scanner.
Conférence Matpost 2019
Creators: name: Horvilleur, Jacques
Publisher: name: SEE
Year: 2020

description: Dans les systèmes insulaires, d’autres solutions doivent être trouvées, faute de quoi on n’aura le choix qu’entre le maintien d’une proportion importante de centrales thermiques et une alimentation en électricité de faible qualité, socialement inacceptable.
Charge Gaps at Fractional Fillings in Boson Hubbard Ladders
Creators: name: Ying, T.
name: Batrouni, G. G.
name: Tang, G. X.
name: Sun, X. D.
name: Scalettar, R. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Bose-Hubbard Hamiltonian describes the competition between superfluidity and Mott insulating behavior at zero temperature and commensurate filling as the strength of the on-site repulsion is varied. Gapped insulating phases also occur at non-integer densities as a consequence of longer ranged repulsive interactions. In this paper we explore the formation of gapped phases in coupled chains due instead to anisotropies $t_x \neq t_y$ in the bosonic hopping, extending the work of Crepin {\it et al.} [Phys. Rev. B 84, 054517 (2011)] on two coupled chains, where a gap was shown to occur at half filling for arbitrarily small interchain hopping $t_y$. Our main result is that, unlike the two-leg chains, for three- and four-leg chains, a charge gap requires a finite nonzero critical $t_y$ to open. However, these finite values are surprisingly small, well below the analogous values required for a fermionic band gap to open.
description: 8 pages, 15 figures
Genome-wide association study of growth traits in meat pigeons
Creators: name: Hou, haobin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 300301
subject: Animal growth and development
classificationCode: 300305
subject: Animal reproduction and breeding

description: Identification of functional genes and molecular markers of growth traits through a genome-wide association study (GWAS) will help to elucidate the underlying molecular mechanisms and provide a theoretical basis for selective breeding of meat pigeons.
Innovative SF6 free switch with shunt vacuum interruption technology
Creators: name: Preve, Christophe
name: Maladen, Romain
name: Piccoz, Daniel
name: Trichon, François
Publisher: name: SEE
Year: 2020

description: This paper presents an innovative and compact SF6 free switch with shunt vacuum interruption (SVI) technology. To replace SF6 as arc-quenching gas, some alternative fluorinated candidates were identified for medium voltage electrical equipment. While their GWP (Global Warming Potential) is low, these gases require specific precautions for handling and end of life management. Indeed, the acute toxicity of these gases is high, their carcinogenic, mutagenic and reprotoxic characteristics are not known and, when exposed to electrical arcs, they produce numerous toxic by-products. A smart solution has been designed without breaking in gas. The gas inside the switchgear has only a dielectric function and then any by-products after current breaking is avoided. The dielectric performance is insured by air or HFO 1234zeE at different pressures according to voltage rating. The breaking is ensured by vacuum interrupters whose role consists in shunting the current from the main circuit then breaking during the phase of opening. Disconnection is ensured by a gas gap and earthing is done inside the tank. The operating mode is the same as current SF6 3-positions switch: breaking/disconnecting in one operation and earthing in a second operation. The combination of different devices and their interactions enable to design a compact solution with similar dimensions than SF6 ones. This solution presents the following advantages: fully environmentally friendly, safe for people, easy to operate, high expecting life and same footprint as current SF6 switchgear.
Neural-network preconditioners for solving the Dirac equation in lattice gauge theory
Creators: name: Calì, Salvatore
name: Hackett, Daniel C.
name: Lin, Yin
name: Shanahan, Phiala E.
name: Xiao, Brian
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This work develops neural-network--based preconditioners to accelerate solution of the Wilson-Dirac normal equation in lattice quantum field theories. The approach is implemented for the two-flavor lattice Schwinger model near the critical point. In this system, neural-network preconditioners are found to accelerate the convergence of the conjugate gradient solver compared with the solution of unpreconditioned systems or those preconditioned with conventional approaches based on even-odd or incomplete Cholesky decompositions, as measured by reductions in the number of iterations and/or complex operations required for convergence. It is also shown that a preconditioner trained on ensembles with small lattice volumes can be used to construct preconditioners for ensembles with many times larger lattice volumes, with minimal degradation of performance. This volume-transferring technique amortizes the training cost and presents a pathway towards scaling such preconditioners to lattice field theory calculations with larger lattice volumes and in four dimensions.
description: 11 pages, 6 figures, and 2 tables
Competition between s-wave order and d-wave order in holographic superconductors
Creators: name: Li, Li-Fang
name: Cai, Rong-Gen
name: Li, Li
name: Wang, Yong-Qiang
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study competition between s-wave order and d-wave order through two holographic superconductor models. We find that once the coexisting phase appears, it is always thermodynamically favored, and that the coexistence phase is narrow and one condensate tends to kill the other. The phase diagram is constructed for each model in terms of temperature and the ratio of charges of two orders. We further compare the behaviors of some thermodynamic quantities, and discuss the different aspects and identical ones between two models.
description: 3 figures added, accepted by JHEP
Circularity design of power transformers
Creators: name: Devaux, François
name: Laruelle, Elodie
name: Perrier, Christophe
Publisher: name: SEE
Year: 2020

description: This paper firstly presents the life cycle assessment results of a 63 MVA power transformer, with a focus on materials impact. Then it explains the European requirements defined in the eco-design regulation for transformers and presents the status of the on-going revision. Finally, circular efficiency is discussed, dealing with material efficiency, life time extension through oil monitoring, durability and end of life management.
Tests of photometry: the case of the NGC 3370 ACS field
Creators: name: Jang, In Sung
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A critical analysis and comparison of different methods for obtaining point spread function (PSF) photometry are carried out. Deep ACS observations of NGC3370 were reduced using four distinct approaches. These reductions explore a number of methodological differences: software packages (DAOPHOT and DOLPHOT), input images (individual and stacked frames), PSF models (synthetic and empirical), and aperture correction methods (automatic and manual). A comparison of the photometry leads to the following results: 1) Photometric incompleteness between individual reductions shows only a minimal difference (<10%). 2) Statistical errors are 20% to 30% smaller for DAOPHOT runs on stacked frames than DOLPHOT runs on individual frames. 3) Statistical errors assigned directly by the photometry codes are 25% to 50% smaller than the errors measured from artificial star tests. 4) Systematic errors are magnitude dependent and become larger at the faint end, at the level of $σ_s\sim0.1$ mag. 5) The automatic aperture correction routines in DOLPHOT result in a significant systematic error ($σ_s \sim 0.05$ mag). 6) Individual reductions agree well at the 0.02 mag level when the systematic errors are properly corrected through artificial star tests. The reasonable agreement between the reductions leads to important implications that i) the reduction dependent errors can be reduced to a 1% level in the luminosity distance scale, and ii) the stacked frame photometry can be a good means to study non-variable stars in external galaxies.
description: 18 pages, 11 figures, 5 tables, submitted
A new approach in computing the effects of high harmonic currents generated by power electronic components in the grid on the transformer winding losses
Creators: name: Mokkapaty, Stéphane
name: Jules-Antoine Corral
Publisher: name: SEE
Year: 2020

description: In this paper a 2D finite element numerical simulation method by considering the geometrical model of the real transformer core and windings is proposed to accurately compute the magnetic stray fields and corresponding effects of high frequency harmonic currents in a standard and a double tier winding transformer. Validation of the simulation results with analytical and measured field data has also been included.
L’intelligence artificielle pour fluidifier les diagnostics dans les urgences
Creators: name: Debaille, Suzanne
Publisher: name: SEE
Year: 2020

description: Avec la crise de la COVID-19, la question de la saturation des urgences est plus que jamais d’actualité, la start-up Milvue, fondée en 2018, développe des solutions d’Intelligence Augmentée permettant aux radiologues et aux urgentistes de répondre de manière fiable et rapide aux besoins d’imagerie
生长性状的全基因组关联研究肉鸽
Creators: name: Hou, haobin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 300301
subject: Animal growth and development
classificationCode: 300305
subject: Animal reproduction and breeding

description: 通过全基因组关联研究（GWAS）鉴定生长和屠宰性状的功能基因和分子标记，有助于阐明其潜在的分子机制，并为肉鸽的选择性育种提供理论依据。收集556只肉鸽在52周龄和80周龄的体重（BW）和体型（BS）表型数据。160,434高质量的单核苷酸多态性位点 （RAD-Seq）。 GWAS分析显示，MSTN、IGF2BP3和NCAPG/LCORL是影响肉鸽生长性状的重要候选基因。 IGF2BP3和NCAPG/LCORL高度相关与BW和BS整体生长发育有关， 而MSTN与胸厚度和BW相关。
MxTasks: a novel processing model to support data processing on modern hardware
Creators: name: Mühlig, Jan
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: 004
subject: Multitasking
subject: Thread
subject: Betriebsmittelverwaltung

description: The hardware landscape has changed rapidly in recent years. Modern hardware in today's servers is characterized by many CPU cores, multiple sockets, and vast amounts of main memory structured in NUMA hierarchies. In order to benefit from these highly parallel systems, the software has to adapt and actively engage with newly available features. However, the processing models forming the foundation for many performance-oriented applications have remained essentially unchanged. Threads, which serve as the central processing abstractions, can be considered a "black box" that hardly allows any transparency between the application and the system underneath. On the one hand, applications are aware of the knowledge that could assist the system in optimizing the execution, such as accessed data objects and access patterns. On the other hand, the limited opportunities for information exchange cause operating systems to make assumptions about the applications' intentions to optimize their execution, e.g., for local data access. Applications, on the contrary, implement optimizations tailored to specific situations, such as sophisticated synchronization mechanisms and hardware-conscious data structures. This work presents MxTasking, a task-based runtime environment that assists the design of data structures and applications for contemporary hardware. MxTasking rethinks the interfaces between performance-oriented applications and the execution substrate, streamlining the information exchange between both layers. By breaking patterns of processing models designed with past generations of hardware in mind, MxTasking creates novel opportunities to manage resources in a hardware- and application-conscious way. Accordingly, we question the granularity of "conventional" threads and show that fine-granular MxTasks are a viable abstraction unit for characterizing and optimizing the execution in a general way. Using various demonstrators in the context of database management systems, we illustrate the practical benefits and explore how challenges like memory access latencies and error-prone synchronization of concurrency can be addressed straightforwardly and effectively.
Primordial lepton asymmetries in the precision cosmology era: Current status and future sensitivities from BBN and the CMB
Creators: name: Escudero, Miguel
name: Ibarra, Alejandro
name: Maura, Victor
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using a new sample of extremely metal poor systems, the EMPRESS survey has recently reported a primordial helium abundance that is $3σ$ smaller than the prediction from the standard big bang nucleosynthesis (BBN) scenario. This measurement could be interpreted as a hint for a primordial lepton asymmetry in the electron neutrino flavor. Motivated by the EMPRESS results, we present a comprehensive analysis of the lepton asymmetry using measurements of the abundances of primordial elements, along with cosmic microwave background (CMB) data from Planck. Assuming that there is no dark radiation in our Universe, we find an electron neutrino chemical potential $ξ_{ν_e} = 0.043 \pm 0.015$, which deviates from zero by $2.9σ$. If no assumption is made on the abundance of dark radiation in the Universe, the chemical potential is $ξ_{ν_e} = 0.046 \pm 0.021$, which deviates from zero by $2.2σ$. We also find that this result is rather insensitive to the choice of nuclear reaction rates. If the true helium abundance corresponds to the EMPRESS central value, future CMB observations from the Simons Observatory and CMB-S4 will increase the significance for a nonzero lepton asymmetry to $4σ$ and $5σ$ respectively, assuming no dark radiation, or to $3σ$ when no assumption is made on the abundance of dark radiation.
description: 10 pages, 11 figures, 1 table. Matches published version in PRD. Minor modifications. Updated with the latest EMPRESS results. Conclusions remain unchanged
Spontaneous Breaking of Scale Invariance in a d=3 U(N) Model with Chern-Simons Gauge Field
Creators: name: Bardeen, William A.
name: Moshe, Moshe
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study spontaneous breaking of scale invariance in the large N limit of three dimensional $U(N)_κ$ Chern-Simons theories coupled to a scalar field in the fundamental representation. When a $λ_6(ϕ^\dagger\cdotϕ)^3$ self interaction term is added to the action we find a massive phase at a certain critical value for a combination of the $λ_6$ and 't Hooft's $λ=N/κ$ couplings. This model attracted recent attention since at finite $κ$ it contains a singlet sector which is conjectured to be dual to Vasiliev's higher spin gravity on $AdS_4$. Our paper concentrates on the massive phase of the 3d boundary theory. We discuss the advantage of introducing masses in the boundary theory through spontaneous breaking of scale invariance.
description: 23 pages, 8 figures. several lines changed in the introduction. typos corrected
Après le COVID, il faudra revenir aux fondamentaux
Creators: name: Hauet, Jean-Pierre
Publisher: name: SEE
Year: 2020

description: La menace du COVID-19 semble s’estomper mais la France est toujours à l’arrêt. La reprise économique ne sera pas spontanée : les circuits économiques doivent être réactivés et des pans entiers de l’économie sont sinistrés. Pourtant la renaissance économique est nécessaire
Modules for Experiments in Stellar Astrophysics (MESA): Time-Dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure
Creators: name: Jermyn, Adam S.
name: Bauer, Evan B.
name: Schwab, Josiah
name: Farmer, R.
name: Ball, Warrick H.
name: Bellinger, Earl P.
name: Dotter, Aaron
name: Joyce, Meridith
name: Marchant, Pablo
name: Mombarg, Joey S. G.
name: Wolf, William M.
name: Wong, Tin Long Sunny
name: Cinquegrana, Giulia C.
name: Farrell, Eoin
name: Smolec, R.
name: Thoul, Anne
name: Cantiello, Matteo
name: Herwig, Falk
name: Toloza, Odette
name: Bildsten, Lars
name: Townsend, Richard H. D.
name: Timmes, F. X.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics (MESA). The new auto_diff module implements automatic differentiation in MESA, an enabling capability that alleviates the need for hard-coded analytic expressions or finite difference approximations. We significantly enhance the treatment of the growth and decay of convection in MESA with a new model for time-dependent convection, which is particularly important during late-stage nuclear burning in massive stars and electron degenerate ignition events. We strengthen MESA's implementation of the equation of state, and we quantify continued improvements to energy accounting and solver accuracy through a discussion of different energy equation features and enhancements. To improve the modeling of stars in MESA we describe key updates to the treatment of stellar atmospheres, molecular opacities, Compton opacities, conductive opacities, element diffusion coefficients, and nuclear reaction rates. We introduce treatments of starspots, an important consideration for low-mass stars, and modifications for superadiabatic convection in radiation-dominated regions. We describe new approaches for increasing the efficiency of calculating monochromatic opacities and radiative levitation, and for increasing the efficiency of evolving the late stages of massive stars with a new operator split nuclear burning mode. We close by discussing major updates to MESA's software infrastructure that enhance source code development and community engagement.
description: 50 pages, 29 figures; Accepted to ApJS
Elevated glucocorticoid receptor concentrations before and after glucocorticoid therapy in peripheral mononuclear leukocytes of patients with atopic dermatitis
Creators: name: Rupprecht, M.
name: Rupprecht, R.
name: Kornhuber, J.
name: Wodarz, Norbert
name: Koch, H. U.
name: Riederer, P.
name: Hornstein, O. P.
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 610 Medizin
subject: 3',5'-Cyclic-AMP Phosphodiesterases/physiology
subject: Adolescent
subject: Adult
subject: Contraceptives, Oral/pharmacology
subject: Cyclic AMP/physiology
subject: Dermatitis, Atopic/immunology
subject: Dexamethasone/therapeutic use
subject: Female
subject: Humans
subject: Hydrocortisone/blood
subject: Leukocytes, Mononuclear/chemistry
subject: Male
subject: Methylprednisolone/therapeutic use
subject: Receptors, Glucocorticoid/analysis

description: The number and affinity of glucocorticoid binding sites in peripheral mononuclear leukocytes of patients with atopic dermatitis (AD) and healthy controls were determined under baseline conditions and after a defined oral glucocorticoid treatment. Patients with AD (n = 15) exhibited significantly more glucocorticoid receptors (GR) per cell than the control group (n = 22), while the GR affinity did not differ. Methylprednisolone treatment resulted in a significant reduction of the GR sites per cell in the steroid-treated control group (n = 10) in contrast to the patients. The dissociation constant was not affected by methylprednisolone treatment in either group. In view of the therapeutic efficiency of glucocorticoids in AD and findings of abnormal cAMP and cAMP-phosphodiesterase activity, the elevated GR concentrations in AD lend support to the hypothesis of a compensatory GR upregulation due to an insufficient action of endogenous cortisol or to altered cAMP-induced GR expression.
Entretien avec Colette Lewiner
Energie et climat : jusqu’où le covid-19 va-t-il rebattre les cartes ?
Creators: name: Lewiner, Colette
Publisher: name: SEE
Year: 2020

description: La 21e édition de l’Observatoire mondial Capgemini des marchés de l’énergie a été publiée sous votre autorité en novembre dernier. Pouvez-vous nous rappeler quel est l’objet de cet observatoire et comment il fonctionne ?
Energy conditions in modified gravity
Creators: name: Capozziello, Salvatore
name: Lobo, Francisco S. N.
name: Mimoso, José P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider generalized energy conditions in modified theories of gravity by taking into account the further degrees of freedom related to scalar fields and curvature invariants. The latter are usually recast as generalized {\it geometrical fluids} that have different meanings with respect to the standard matter fluids generally adopted as sources of the field equations. More specifically, in modified gravity the curvature terms are grouped in a tensor $H^{ab}$ and a coupling $g(Ψ^i)$ that can be reorganized in effective Einstein field equations, as corrections to the energy-momentum tensor of matter. The formal validity of such inequalities does not assure some basic requirements such as the attractive nature of gravity, so that the energy conditions have to be considered in a wider sense.
description: 4 pages. V2: 5 pages; version to appear in Physics Letters B. V3: typo in Eq. (4) corrected
Extremal Kerr black hole entropy in Poincaré gauge theory
Creators: name: Cvetković, Branislav
name: Rakonjac, Danilo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the near horizon symmetry of the extremal Kerr black hole within the framework of Poincaré gauge theory (PG) for two important limiting cases: Riemannian and teleparallel solution. We show that the algebra of canonical generators is realized by Virasoro algebra, with central charge which depends on the black hole horizon radius . The conformal entropy of the black hole is obtained via Cardy formula.
description: LaTex 14 pages; v2 revised version, two references added
Prix Edouard Branly 2019 : Mesurer la pollution : quand les lasers font chanter les gaz
Creators: name: Aoust, Guillaume
Publisher: name: SEE
Year: 2020

description: Les enjeux de santé publique croissants rendent nécessaire de mesurer la composition de l’air que chacun respire avec précision. Bien que découverte il y a plus de 140 ans, la méthode de détection photoacoustique est plus que jamais au cœur de technologies de pointe actuelles à base de semi-conducteurs, capables de réaliser ces mesures en respectant les contraintes économiques fortes posées par le déploiement à grande échelle.
Parameterisation of M.R. system performance : towards optimised measures of image quality
Creators: name: De Wilde, Janet P.
Publisher: name: Imperial College London
Year: 2023

description: This thesis proposes optimal measures for the inter-system comparison of signal properties when assessing the imaging performance of Magnetic Resonance Imaging (MRI) scanners. MRI has become a popular clinical imaging modality and there are many manufacturers producing systems of various quality. It is essential, therefore, that the performance of each MRI system can be measured and compared. Five criteria have been identified as being of prime importance, namely, the signal-to-noise ratio (SNR), signal non-uniformity, resolution, system induced ghost artefacts and patient induced ghost artefacts. The research concentrated directly on the derivation of performance parameters from test object images. For each criterion a specific algorithm has been developed to obtain optimal parameters. For SNR, a method of evaluation has been derived that utilises the Wiener spectrum to distinguish between random and non-random noise in the MR image. The assessment of signal non-uniformity has been improved by applying statistical parameters. The Modulation Transfer Function has been used in the evaluation and comparison of resolution of MRI systems. Crosscorrelation techniques have enabled the complete automatic location and analysis of ghost artefacts in MR test object images. An autocorrelation technique has been created to compare the degree of respiratory motion artefact present in an MR image. All the techniques, wherever possible, have been optimised for speed and automated to eliminate operator dependency. The strength of this thesis lies in the fact that the data used is not simulated, it is actual data gathered with the full support of each manufacturer in the country of origin. This enables truly applicable comparison parameters to be derived. This is a prominent deficiency for workers who mathematically create images or who work with only one system. The success of the five parameterisations is demonstrated by performing an inter-system comparison of ten commercially available scanners.
Hadronic structure on the light-front V. Diquarks, Nucleons and multiquark Fock components
Creators: name: Shuryak, Edward
name: Zahed, Ismail
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This work is a continuation in our series of papers, that addresses quark models of hadronic structure on the light front, motivated by the QCD vacuum structure and lattice results. In this paper we focus on the importance of diquark correlations, which we describe by a quasi-local four-fermion effective 't Hooft interaction induced by instantons. The same interaction is also shown to generate extra quark-antiquark pair of the "sea". Its higher order iteration can be included via "pion-mediation": both taken together yield a quantitative description of the observed flavor asymmetry of antiquarks sea. Finally we discuss the final step needed to bridge the gap between hadronic spectroscopy and parton observables, by forward DGLAP evolution towards the chiral upper scale of $\sim 1\, {\rm GeV}^2$.
Gravitational-wave flux for a particle orbiting a Kerr black hole to 20th post-Newtonian order: a numerical approach
Creators: name: Shah, Abhay G
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article we present the post-Newtonian (pN) coefficients of the energy flux (and angular momentum flux) at infinity and event horizon for a particle in circular, equatorial orbits about a Kerr black hole (of mass $M$ and spin-parameter $a$) up to 20-pN order. When a pN term is not a polynomial in $a/M$ and includes irrational functions (like polygamma functions), it is written as a power series of $a/M$. This is achieved by calculating the fluxes numerically with an accuracy greater than 1 part in $10^{600}$. Such high accuracy allows us to extract analytical values of pN coefficients that are linear combinations of transcendentals like the Euler constant, logarithms of prime numbers and powers of $π$. We also present the 22-pN expansion (spin-independent pN expansion) of the ingoing energy flux at the event horizon for a particle in circular orbit about a Schwarzschild black hole.