cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electroproduction of the N*(1535) resonance at large momentum transfer
Creators: name: Braun, V. M.
name: Göckeler, M.
name: Horsley, R.
name: Kaltenbrunner, T.
name: Lenz, A.
name: Nakamura, Y.
name: Pleiter, D.
name: Rakow, P. E. L.
name: Rohrwild, J.
name: Schäfer, A.
name: Schierholz, G.
name: Stüben, H.
name: Warkentin, N.
name: Zanotti, J. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report on the first lattice calculation of light-cone distribution amplitudes of the N*(1535) resonance, which are used to calculate the transition form factors at large momentum transfers using light-cone sum rules. In the region Q^2 > 2 GeV^2, where the light-cone expansion is expected to converge, the results appear to be in good agreement with the experimental data.
description: 4 pages, 3 figures
Spectroscopic studies of shock tube plasmas
Creators: name: James, Harry Gordon
Publisher: name: University of British Columbia
Year: 2011

description: Spectroscopic measurements were made on plasmas in electromagnetic shock tubes to test the state of equilibrium in these plasmas. In an Argon-Oxygen mixture the relative intensities of AII and AIII lines and of OII lines indicated that complete equilibrium was not established. In a Helium plasma the observed line intensities showed that the populations of the Hel levels agreed with a Boltzmann equilibrium distribution.
A New Proper Motion Determination of Leo I
Creators: name: Casetti-Dinescu, Dana I.
name: Hansen, Caitlin K.
name: Girard, Terrence M.
name: Kozhurina-Platais, Vera
name: Platais, Imants
name: Horch, Elliott P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measure the absolute proper motion of Leo I using a WFPC2/HST data set that spans up to 10 years, to date the longest time baseline utilized for this satellite. The measurement relies on ~ 2300 Leo I stars located near the center of light of the galaxy; the correction to absolute proper motion is based on 174 Gaia EDR3 stars and 10 galaxies. Having generated highly-precise, relative proper motions for all Gaia EDR3 stars in our WFPC2 field of study, our correction to the absolute EDR3 system does not rely on these Gaia stars being Leo I members. This new determination also benefits from a recently improved astrometric calibration of WFPC2. The resulting proper-motion value, (mu_alpha, mu_delta) = (-0.007 +- 0.035, -0.119 +-0.026) mas/yr is in agreement with recent, large-area, Gaia EDR3-based determinations. We discuss all the recent measurements of Leo I's proper motion and adopt a combined, multi-study average of (mu_alpha_3meas, mu_delta_3meas) = (-0.036 +- 0.016, -0.130 +- 0.010) mas/yr. This value of absolute proper motion for Leo I indicates its orbital pole is well aligned with that of the Vast Polar Structure, defined by the majority of the brightest dwarf-spheroidal satellites of the Milky Way.
description: accepted for publication in The Astronomical Journal
The strange history of B functions or how theoretical chemists and mathematicians do (not) interact
Creators: name: Weniger, Ernst Joachim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: $B$ functions are a class of relatively complicated exponentially decaying basis functions. Since the molecular multicenter integrals of the much simpler Slater-type functions are notoriously difficult, it is not at all obvious why $B$ functions should offer any advantages. However, $B$ functions have Fourier transforms of exceptional simplicity, which greatly simplifies many of their molecular multicenter integrals. This article discusses the historical development of $B$ functions from the perspective of the interaction between mathematics and theoretical chemistry, which traditionally has not been very good. Nevertheless, future progress in theoretical chemistry depends very much on a fertile interaction with neighboring disciplines.
description: 13 pages, LaTeX2e, 0 figures;. To appear in International Journal of Quantum Chemistry (Proceedings of the Conference Odyssey 2008 -- Mathematical and Computational Aspects of Molecular Electronic Structure Calculations Campus Saint-Jean, University of Alberta, Edmonton, Canada, June 2008)
Advanced Landau damping with radio-frequency quadrupoles or nonlinear chromaticity
Creators: name: Schenk, M.
name: Buffat, X.
name: Grudiev, A.
name: Li, K.
name: Métral, E.
name: Maillard, A.
Publisher: name: CERN Yellow Reports: Conference Proceedings
Year: 2020

description: Landau damping is a powerful mechanism to suppress impedance-driven coherent instabilities in circular accelerators. In the transverse planes it is usually introduced by means of magnetic octupoles. We will discuss a method to generate the required incoherent betatron frequency spread through detuning with the longitudinal rather than the transverse amplitudes. The approach is motivated mainly by the high-brightness, low transverse emittance beams in future colliders where detuning with the transverse amplitudes from magnetic octupoles becomes significantly less effective. Two equivalent methods are under study: a radio-frequency quadrupole cavity and the nonlinear chromaticity. The underlying beam dynamics mechanisms are explained based on a recently extended Vlasov theory and relevant results are discussed for dierent longitudinal beam distributions under specific approximations. Finally, the analytical studies are benchmarked against numerical simulations employing a circulant matrix and a macroparticle tracking model.
description: CERN Yellow Reports: Conference Proceedings, Vol. 9 (2020): Proceedings of the ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators, Zermatt, Switzerland, 23–27 September 2019
Compression Method for Solar Polarization Spectra Collected from Hinode SOT/SP Observations
Creators: name: Batmunkh, Jargalmaa
name: Iida, Yusuke
name: Oba, Takayoshi
name: Iijima, Haruhisa
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The complex structure and extensive details of solar spectral data, combined with a recent surge in volume, present significant processing challenges. To address this, we propose a deep learning-based compression technique using deep autoencoder (DAE) and 1D-convolutional autoencoder (CAE) models developed with Hinode SOT/SP data. We focused on compressing Stokes I and V polarization spectra from the quiet Sun, as well as from active regions, providing a novel insight into comprehensive spectral analysis by incorporating spectra from extreme magnetic fields. The results indicate that the CAE model outperforms the DAE model in reconstructing Stokes profiles, demonstrating greater robustness and achieving reconstruction errors around the observational noise level. The proposed method has proven effective in compressing Stokes I and V spectra from both the quiet Sun and active regions, highlighting its potential for impactful applications in solar spectral analysis, such as detection of unusual spectral signals.
Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- I. A sample of systems with components' masses between 1 and 2 M$_\odot$
Creators: name: Hełminiak, K. G.
name: Konacki, M.
name: Ratajczak, M.
name: Muterspaugh, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We derive the absolute physical and orbital parameters for a sample of 18 detached eclipsing binaries from the \emph{All Sky Automated Survey} (ASAS) database based on the available photometry and our own radial velocity measurements. The radial velocities (RVs) are computed using spectra we collected with the 3.9-m Anglo-Australian Telescope and its \emph{University College London Echelle Spectrograph} and the 1.9-m SAAO Radcliffe telescope and its \emph{Grating Instrument for Radiation Analysis with a Fibre Fed Echelle}. In order to obtain as precise RVs as possible, most of the systems were observed with an iodine cell available at the AAT/UCLES and/or analyzed using the two-dimensional cross-correlation technique (TODCOR). The RVs were measured with TODCOR using synthetic template spectra as references. However, for two objects we used our own approach to the tomographic disentangling of the binary spectra to provide observed template spectra for the RV measurements and to improve the RV precision even more. For one of these binaries, AI Phe, we were able to the obtain an orbital solution with an RV $rms$ of 62 and 24 m s$^{-1}$ for the primary and secondary respectively. For this system, the precision in $M \sin^3{i}$ is 0.08%. For the analysis, we used the photometry available in the ASAS database. We combined the RV and light curves using PHOEBE and JKTEBOP codes to obtain the absolute physical parameters of the systems. Having precise RVs we were able to reach $\sim$0.2 % precision (or better) in masses in several cases but in radii, due to the limited precision of the ASAS photometry, we were able to reach a precision of only 1% in one case and 3-5 % in a few more cases. For the majority of our objects, the orbital and physical analysis is presented for the first time.
description: 16 pages, 2 figures, 6 tables in the main text, 1 table in appendix, to appear in MNRAS
Hele-Shaw flow for parity odd three-dimensional fluids
Creators: name: Reynolds, Dylan
name: Monteiro, Gustavo M.
name: Ganeshan, Sriram
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A Hele-Shaw cell is a device used to study fluid flow between two parallel plates separated by a small gap. The governing equation of flow within a Hele-Shaw cell is Darcy's law, which also describes flow through a porous medium. In this work, we derive a generalization to Darcy's law starting from a three-dimensional fluid with a parity-broken viscosity tensor with no isotropy. We discuss the observable effects of parity-odd fluids in various physical setups relevant to Hele-Shaw experiments, such as channel flow, flow past an obstacle, bubble dynamics, and the Saffman-Taylor instability. In particular, we show that when such a fluid is pushed through a channel, a transverse force is exerted on the walls, and when a bubble of air expands into a region of such fluid, a circulation develops in the far field, with both effects proportional to the parity-odd viscosity coefficients. The Saffman-Taylor stability condition is also modified, with these terms tending to stabilize the two-fluid interface. Such experiments can in principle facilitate the measurement of parity-odd coefficients in both synthetic and natural active matter systems.
description: 11 pages, 4 figures
Statistical Study on the Sources of Jovian Decametric Radio Emissions Based on the Radio Observations of Remote Instruments
Creators: name: Zheng, Ruobing
name: Wang, Yuming
name: Li, Xiaolei
name: Wang, Chuanbing
name: Jia, Xianzhe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: To better understand the physical processes associated with Jovian decametric (DAM) radio emissions, we present the statistical study of DAMs and inferred characteristics of DAM sources based on multi-view observation from Wind and STEREO spacecraft. The distribution of the apparent rotation speed of DAMs derived from multiple spacecraft suggests that the rotation speed of Io-related DAMs is in range of 0.15-0.6Ω_J and that of non-Io-DAMs is between 0.7-1.2Ω_J. Based on the method of Wang et al. (2020), we locate the sources of the DAMs and infer their emission angles and associated electron energies. The statistical results show that the DAM source locations have three preferred regions, two in the southern hemisphere and one in the northern hemisphere, which is probably caused by the non-symmetrical topology of Jupiter's magnetic field. The difference between Io-DAM source footprints and Io auroral spots changes with the Io's position in longitude, consistent with the previous results from Hess et al. (2010), Bonfond et al. (2017) and Hinton et al. (2019). In addition, the emission angles for non-Io-DAMs are smaller than that for Io-DAMs from the same source regions and all the emission angles range from 60° to 85°. Correspondingly, the electron energy is mainly distributed between 0.5 and 20 keV.
description: 35 pages, 16 figures, 2 tables
Il ruolo della Citizen Science nella Ricerca Scientifica
Creators: name: Castracani, C.
Publisher: name: Zenodo
Year: 2024
Subjects: Citizen Science
Citizen Science Italia
Ricerca Scientifica
2024 Corso CSI Pontignano

description: Vantaggi e criticità dell’impiego di questo approccio nell’ambito del monitoraggio della biodiversità e in altri ambiti di ricerca.
Reduced kinetic model of polyatomic gases
Creators: name: Kolluru, Praveen Kumar
name: Atif, Mohammad
name: Ansumali, Santosh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Kinetic models of polyatomic gas typically account for the internal degrees of freedom at the level of the two-particle distribution function. However, close to the hydrodynamic limit, the internal (rotational) degrees of freedom tend to be well represented just by rotational kinetic energy density. We account for the rotational energy by augmenting the Ellipsoidal-statistical BGK (ES-BGK) model, an extension of the Bhatnagar-Gross- Krook (BGK) model, at the level of the single-particle distribution function with an advection-diffusion-relaxation equation for the rotational energy. This reduced model respects the H theorem and recovers the compressible hydrodynamics for polyatomic gases as its macroscopic limit. As required for a polyatomic gas model, this extension of the ES-BGK model has not only correct specific heat ratio but also allows for three independent tunable transport coefficients: thermal conductivity, shear viscosity, and bulk viscosity. We illustrate the effectiveness of the model via a lattice Boltzmann method implementation.
Lambda-prophage induction modeled as a cooperative failure mode of lytic repression
Creators: name: Chia, Nicholas
name: Golding, Ido
name: Goldenfeld, Nigel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We analyze a system-level model for lytic repression of lambda-phage in E. coli using reliability theory, showing that the repressor circuit comprises 4 redundant components whose failure mode is prophage induction. Our model reflects the specific biochemical mechanisms involved in regulation, including long-range cooperative binding, and its detailed predictions for prophage induction in E. coli under ultra-violet radiation are in good agreement with experimental data.
description: added reference
Additional file 1 of National incidence and mortality of hospitalized sepsis in China
Creators: name: Weng, Li
name: Xu, Yang
name: Yin, Peng
name: Wang, Yi
name: Chen, Yan
name: Liu, Wei
name: Li, Shan
name: Peng, Jin-min
name: Dong, Run
name: Hu, Xiao-yun
name: Jiang, Wei
name: Wang, Chun-yao
name: Gao, Pei
name: Zhou, Mai-geng
name: Du, Bin
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Fig. S1. Percentage of hospitals enrolled in NDCMS by province from 2017 to 2019 † ‡. Fig. S2. Enrollment of Admissions in NDCMS. Method S1. Description of Sampling Strategy and Death Data Collection in the National Mortality Surveillance System (NMSS). Table S1. Explicit ICD-10-CM codes of sepsis. Table S2. ICD-9-CM and ICD-10-CM Codes for Identification of Infection in NDCMS and Sepsis-related Death in NMSS. Table S3. ICD-10-CM codes of organ dysfunction. Table S4. ICD-9-CM codes of organ dysfunction related procedures. Table S5. ICD-10-CM codes of Charlson Comorbidity Index. Method S2. Estimation of in-hospital sepsis case fatality rate, in-hospital sepsis mortality rate and hospitalized sepsis incidence. Method S3. Explanations of Global and Local Moran's Index. Table S6. Demographic and Clinical Characteristics of Patients with Explicit-coded Sepsis in NDCMS from 2017 to 2019. Table S7. Characteristics of Admissions for Implicit-Coded Sepsis From 2017 to 2019. Table S8. Characteristics of Admissions for Explicit-Coded Sepsis From 2017 to 2019. Table S9. Crude Province-specific Incidence, Case Fatality Rate and Mortality Rate of Implicit-coded Sepsis from 2017 to 2019. Table S10. Standardized Province-specific Incidence, Case Fatality Rate and Mortality Rate of Implicit-coded Sepsis from 2017 to 2019. Table S11. Association between Incidence of Implicit-coded Sepsis Hospitalization and Healthcare Resources Availability from 2017 to 2019. Table S12. Sensitivity Analysis of Incidence, Case Fatality Rate and Mortality Rate of Implicit-coded Sepsis for Both Sexes from 2017 to 2019. Table S13. Validation of Implicit-Coded Strategy for Identification of Sepsis in ICU and Non-ICU Settings abc.
Statistical self-organization of a gas of interacting walking drops in a confining potential
Creators: name: Hélias, Adrien
name: Labousse, Matthieu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A drop bouncing on a vertically-vibrated surface may self-propel forward by standing waves and travels along a fluid interface. This system called walking drop forms a non-quantum wave-particle association at the macroscopic scale. The dynamics of one particle has triggered many investigations and has resulted in spectacular experimental results in the last decade. We investigate numerically the dynamics of a gas of walkers, i.e. a large number of walking drops evolving on a unbounded fluid interface in the presence of a confining potential acting on the particles. We show that even if the individual trajectories are erratic, the system presents well-defined ordered internal structure that remains invariant to parameter variations such as the number of drops, the memory time and the bath radius. We rationalize such non-stationary self-organization in terms of the symmetry of the waves and show that oscillatory pair potentials form a wavy collective state of active matter.
description: 9 pages, 7 figures
Pragmatic information of aesthetic appraisal
Creators: name: Graben, Peter beim
Publisher: name: arXiv
Year: 2024
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: A phenomenological model for aesthetic appraisal is proposed in terms of pragmatic information for a dynamic update semantics over belief states on an aesthetic appreciator. The model qualitatively correlates with aesthetic pleasure ratings in an experimental study on cadential effects in Western tonal music. Finally, related computational and neurodynamical accounts are discussed.
description: 10 pages, 3 figures
Hydrodynamical behavior for the generalized symmetric exclusion with open boundary
Creators: name: Franceschini, Chiara
name: Gonçalves, Patrícia
name: Salvador, Beatriz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60k35

description: We analyze the generalized symmetric exclusion process, which allows at most $α$ particles per site, and we put it in contact with stochastic reservoirs whose strength is regulated by a parameter $θ\in\mathbb R$. We prove that the hydrodynamic behavior is given by the heat equation and depending on the value of $θ$, the equation is supplemented with different boundary conditions. Setting $α= 1$ we find the results known in [1] for the symmetric simple exclusion process.
description: 15 pages, 1 figure
Investigation of the characteristics of a pulsed mercury arc
Creators: name: Campbell, Hugh Daniel
Publisher: name: University of British Columbia
Year: 2011

description: An investigation of a pulsed Hg arc has been undertaken to test the relation V α I°⁴ between the voltage and current of an arc discharge. Although the experimental V-I characteristic exhibited this tendency, further considerations strongly indicated that the agreement between theory and experiment was probably a coincidence. The Paschen breakdown curve was determined, and together with simultaneous measurements of the current and voltage, it was possible to measure the average column field strength as a function of current. As a result of an unexpected feature of the apparatus, namely an inherent motion of the electrodes, the voltage waveform could be used to obtain an approximate measurement of the combined thickness of the anode and cathode falls df, and also the average field strength in these regions Ef. The measurements df = 3x10⁻⁶ cm, and Ef = 2.4x10⁶ volt/om appear to be in agreement with the field emission theory.
Supplementary information for DCE_RSOS from Communication speeds up but impairs the consensus decision in a dyadic colour estimation task
Creators: name: Yu, Liutao
name: Wang, Chundi
name: Wu, Si
name: Wang, Da-Hui
Publisher: name: The Royal Society
Year: 2020

description: This document contains supplementary methods, 6 supplementary figures, and 2 supplementary tables.
Polaronic memristor strongly coupled to electrodes
Creators: name: Alexandrov, A. S.
name: Bratkovsky, A. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Attractive electron correlations due to an electron-vibron interaction (EVI) can overcome the direct Coulomb repulsion of polarons in strongly deformable molecular quantum dots (MQDs). If it realizes, a switching appears in the I-V characteristics of the degenerate nonadiabatic molecular bridges weakly coupled to electrodes providing a route to ultrafast `memristors' (memory-resistors) as the basis for future oscillators, amplifers, and other important circuit elements. Here, we extend our theory of polaronic memristors to adiabatic MQDs strongly coupled to the leads and show that the degeneracy of MQD (or other multilevel energy structure) along with the polaron-polaron attraction is a necessary ingredient of its switching behavior in the strong-coupling regime as well.
description: 6 figures, 3 figures
Characterization of Quasi-Keplerian, Differentially Rotating, Free-Boundary Laboratory Plasmas
Creators: name: Valenzuela-Villaseca, V.
name: Suttle, L. G.
name: Suzuki-Vidal, F.
name: Halliday, J. W. D.
name: Merlini, S.
name: Russell, D. R.
name: Tubman, E. R.
name: Hare, J. D.
name: Chittenden, J. P.
name: Koepke, M. E.
name: Blackman, E. G.
name: Lebedev, S. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present results from pulsed-power driven differentially rotating plasma experiments designed to simulate physics relevant to astrophysical disks and jets. In these experiments, angular momentum is injected by the ram pressure of the ablation flows from a wire array Z pinch. In contrast to previous liquid metal and plasma experiments, rotation is not driven by boundary forces. Axial pressure gradients launch a rotating plasma jet upwards, which is confined by a combination of ram, thermal, and magnetic pressure of a surrounding plasma halo. The jet has subsonic rotation, with a maximum rotation velocity $23 \pm 3$ km/s. The rotational velocity profile is quasi-Keplerian with a positive Rayleigh discriminant $κ^2 \propto r^{-2.8\pm0.8}$ rad$^2$/s$^2$. The plasma completes $0.5 - 2$ full rotations in the experimental time frame ($\sim 150$ ns).
description: 4 figures
Electron spin spectroscopy of single TEMPO dimers coupled via interfering tunneling currents
Creators: name: Manassen, Yishay
name: Jbara, Moamen
name: Averbukh, Michael
name: Hazan, Zion
name: Henkel, Carsten
name: Horovitz, Baruch
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We report the detection of electron spin resonance (ESR) in individual dimers of the stable free radical 2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPO). ESR is measured by the current fluctuations in a scanning tunnelling microscope (ESR-STM method). The multi-peak power spectra, distinct from macroscopic data, are assigned to dimers having exchange and Dzyaloshinskii-Moriya interactions in presence of spin-orbit coupling. These interactions are generated in our model by interfering electronic tunneling pathways from tip to sample via the dimer's two molecules. This is the first demonstration that tunneling via two spins is a valid mechanism of the ESR-STM method.
description: 5 pages, 3 figures
AI4EO: from big to small architecture for deployment at the edge
Creators: name: Longepe, Nicolas
name: Mathieu, Pierre Philippe
name: Kucik, Andrzej
name: Saux, Bertrand Le
name: Pastena, Massimiliano
Publisher: name: Zenodo
Year: 2021
Subjects: obdp
obdp2021
on-board processing

description: This presentation aims to provide an overview of the required preparatory steps for an effective deployment of AI at the edge for Earth Observation mission. It is based primarily on the lessons learnt from Phisat-1, an enhancement of the Federated Satellite Systems (FSSCat) mission. Launched in September 2020, it was the first experiment to demonstrate how AI can be used for Earth observation. More specifically, an AI inference engine for cloud detection has been demonstrated thanks to an Intel® Movidius™ Myriad™ 2 Vision Processing Unit (VPU). In this presentation, we will also introduce the capabilities of the planned Phisat-2 mission (with Multispectral EO sensor with 7-bands in VNIR range).

 More specifically, we will also address the following topics in this presentation:
 - An analysis of the need for AI@edge is provided starting from end–user requirements. The AI methodologies (for instance mainly Deep Neural Network) being mostly supervised techniques, relevant databases for training are required. However, self-supervised or weakly supervised AI are of interest when sparse or no annotation / ground truth are available.
 - We will also provide an overview of AI techniques to cope with uncertainties, especially when it is required to use synthetize EO data (e.g. multispectral optical image) that will be acquired by the upcoming flying platform subject to noise. New approaches can be investigated (e.g. NN Out-of-distribution detection-OOD, Bayesian DL) with the general idea to provide robust estimates with quantified uncertainties. Bayesian DL refers to merging deep learning architectures and Bayesian probability theory. Bayesian DL models typically derive estimations of uncertainty by either placing probability distributions over model weights, or by learning a direct mapping to probabilistic outputs.
 - The design of Tiny ML models via binary dropout, pruning, and knowledge distillation is of high interest so as to be compliant with on-board requirement.
 - We will report on current activities about the design of neuromorphic algorithms (spiking neural networks) for solving EO problems such as Temporal coding or rate-based coding)
Additional file 2 of Efficacy of tocilizumab therapy in a patient with severe pancytopenia associated with a STAT3 gain-of-function mutation
Creators: name: Wang, Wenjie
name: Liu, Luyao
name: Hui, Xiaoying
name: Wang, Ying
name: Ying, Wenjing
name: Zhou, Qinhua
name: Hou, Jia
name: Yang, Mi
name: Sun, Bijun
name: Sun, Jinqiao
name: Wang, Xiaochuan
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 2: Supplement Table 2. OGTT results of our case (P1).
Quadrupole-hexadecapole correlations in neutron-rich samarium and gadolinium isotopes
Creators: name: Lotina, L.
name: Nomura, K.
name: Rodríguez-Guzmán, R.
name: Robledo, L. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present an extensive study of quadrupole-hexadecapole correlation effects in even-even Sm and Gd isotopes with neutron number $N=88-106$. The calculations are performed in the framework of the Gogny energy density functional (EDF) with the D1S parametrization and the $sdg$ interacting boson model (IBM). The quadrupole-hexadecapole constrained self-consistent mean-field potential energy surface is mapped onto the expectation value of the $sdg$-boson Hamiltonian. This procedure determines the parameters of the $sdg$-IBM Hamiltonian microscopically. Calculated excitation energies and transition strengths are compared to the ones obtained with a simpler $sd$-IBM, as well as with the experimental data. The Gogny-EDF mapped $sdg$-IBM reproduces spectroscopic properties of the studied nuclei as reasonably as in the case of the previous $sdg$-boson mapping calculations that were based on the relativistic EDF, indicating that the axial quadrupole-hexadecapole method is sound regardless of whether relativistic or nonrelativistic EDF is employed. The mapped $sdg$-IBM improves some of the results in lighter Sm and Gd isotopes compared to the mapped $sd$-IBM, implying the existence of significant hexadecapole correlations in those nuclei. For those nuclei with $N \geq 94$, hexadecapole effects are minor, and the only significant difference between the two boson models can be found in the description of $E0$ monopole transitions.
description: 12 pages, 12 figures
Anomalous Spectroscopical Effects in an Antiferromagnetic Semiconductor
Creators: name: Hubert, Michal
name: Maleček, Tomáš
name: Ahn, Kyo-Hoon
name: Míšek, Martin
name: Železný, Jakub
name: Máca, František
name: Springholz, Gunther
name: Veis, Martin
name: Výborný, Karel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Following the recent observation of anomalous Hall effect in antiferromagnetic hexagonal MnTe thin films, related phenomena at finite frequencies have come into focus. Magnetic circular dichroism (MCD) is the key material property here. In the x-ray range, the XMCD has already been demonstrated and used to visualise domains via photoemission electron microscopy (PEEM). Here we report on MCD in optical range and discuss its microscopic mechanism.
description: paper associated with presentation at 36th ICPS, Ottawa
Coulomb Dissociation of $^{15}$C and Radiative Neutron Capture on $^{14}$C
Creators: name: Esbensen, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The semiclassical, dynamical description of diffraction dissociation of weakly bound nuclei is applied to analyze the decay-energy spectra of $^{15}$C that have been measured at 68 MeV/nucleon on a Pb target. The optical potentials that are used to describe the nuclear interaction of $^{15}$C with the target nucleus are realistic because the fits to the two measured spectra, one with a small and one with a very large acceptance angle, are consistent and of similar quality. The cross section for the radiative neutron capture on $^{14}$C to the 1/2$^+$ ground state of $^{15}$C is deduced from the analysis. When combined with an estimated contribution from the capture to the 5/2$^+$ excited state of $^{15}$C, an excellent agreement with a recent direct capture measurement is achieved.
Os efeitos das sanções em matéria de contratação pública
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Na primeira semana deste mês, ocorreu a I Jornada de Direito Administrativo realizada pelo STJ e o Centro de Estudos Judiciários do Conselho da Justiça Federal. Evento de extrema relevância, por franquear aos estudiosos e/ou operadores do Direito Administrativo a oportunidade singular de levar ao palco sugestões de enunciados, a Jornada foi ao encontro do que desejava a comunidade jurídica. Prova disso está no número de propostas apresentadas.
Field theory of non-Hermitian disordered systems
Creators: name: Chen, Ze
name: Kawabata, Kohei
name: Kulkarni, Anish
name: Ryu, Shinsei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The interplay between non-Hermiticity and disorder gives rise to unique universality classes of Anderson transitions. Here, we develop a field-theoretical description of non-Hermitian disordered systems based on fermionic replica nonlinear sigma models. We classify the target manifolds of the nonlinear sigma models across all the 38-fold symmetry classes of non-Hermitian systems and corroborate the correspondence of the universality classes of Anderson transitions between non-Hermitian systems and Hermitized systems with additional chiral symmetry. We apply the nonlinear sigma model framework to study the spectral properties of non-Hermitian random matrices with particle-hole symmetry. Furthermore, we demonstrate that the Anderson transition unique to nonreciprocal disordered systems in one dimension, including the Hatano-Nelson model, originates from the competition between the kinetic and topological terms in a one-dimensional nonlinear sigma model. We also discuss the critical phenomena of non-Hermitian disordered systems with symmetry and topology in higher dimensions.
description: 25 pages, 2 figures, 7 tables
Kirchhoff type elliptic equations with double criticality in Musielak-Sobolev spaces
Creators: name: Gupta, Shilpa
name: Dwivedi, Gaurav
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B33, 35J20, 35J62

description: This paper aims to establish the existence of a weak solution for the non-local problem: \begin{equation*} \left\{\begin{array}{ll} -a\left(\int_Ω\mathcal{H}(x,|\nabla u|)dx \right) Δ_{\mathcal{H}}u &=f(x,u) \ \ \hbox{in} \ \ Ω, \ \ \ \\ \hspace{3.3cm} u &= 0 \ \ \hbox{on} \ \ \partial Ω, \end{array}\right. \end{equation*} where $Ω\subseteq \mathbb{R}^{N},\, N\geq 2$ is a bounded and smooth domain containing two open and connected subsets $Ω_p$ and $Ω_N$ such that $ \barΩ_{p}\cap\barΩ_{N}=\emptyset$ and $Δ_{\mathcal{H}}u=\hbox{div}( h(x,|\nabla u|)\nabla u)$ is the $\mathcal{H}$-Laplace operator. We assume that $Δ_{\mathcal{H}}$ reduces to $ Δ_{p(x)}$ in $Ω_{p}$ and to $ Δ_{N}$ in $Ω_{N},$ the non-linear function $f:Ω\times\mathbb{R}\rightarrow \mathbb{R}$ act as $|t|^{p^{\ast}(x)-2}t$ on $Ω_{p}$ and as $e^{α|t|^{N/(N-1)}}$ on $Ω_{N}$ for sufficiently large $|t|$. To establish our existence results in a Musielak-Sobolev space, we use a variational technique based on the mountain pass theorem.
description: 16 pages, 0 figures
Fluctuations of the heat flux of a one-dimensional hard particle gas
Creators: name: Brunet, E.
name: Derrida, B.
name: Gerschenfeld, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Momentum-conserving one-dimensional models are known to exhibit anomalous Fourier's law, with a thermal conductivity varying as a power law of the system size. Here we measure, by numerical simulations, several cumulants of the heat flux of a one-dimensional hard particle gas. We find that the cumulants, like the conductivity, vary as power laws of the system size. Our results also indicate that cumulants higher than the second follow different power laws when one compares the ring geometry at equilibrium and the linear case in contact with two heat baths (at equal or unequal temperatures). keywords: current fluctuations, anomalous Fourier law, hard particle gas
description: 5 figures
Magnetic ground state and excitations in mixed 3$d$-4$d$ quasi-1D spin-chain oxide Sr$_3$NiRhO$_6$
Creators: name: Jain, A.
name: Adroja, D. T.
name: Rayaprol, S.
name: Hillier, A. D.
name: Kockelmann, W.
name: Yusuf, S. M.
name: Sampathkumaran, E. V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Entanglement of spin and orbital degrees of freedom, via relativistic spin-orbit coupling, in 4$d$ transition metal oxides can give rise to a variety of novel quantum phases. A previous study of mixed 3$d$-4$d$ quasi-1D spin-chain oxide Sr$_3$NiRhO$_6$ using the magnetization measurements by Mohapatra et al. [Phys. Rev. B 75, 214422 (2007)] revealed a partially disordered antiferromagnetic (PDA) structure below 50 K [Mohapatra et al, Phys. Rev. B 75, 214422 (2007)]. We here report the magnetic ground state and spin-wave excitations in Sr$_3$NiRhO$_6$, using muon spin rotation and relaxation ($μ$SR), and neutron (elastic and inelastic) scattering techniques. Our neutron diffraction study reveals that in the magnetic structure of Sr$_3$NiRhO$_6$, Rh$^{4+}$ and Ni$^{2+}$ spins are aligned ferromagnetically in a spin-chain, with moments along the crystallographic $c$-axis. However, spin-chains are coupled antiferromanetically in the $ab$-plane. $μ$SR reveals the presence of oscillations in the asymmetry-time spectra below 50 K, supporting the long-range magnetically ordered ground state. Our inelastic neutron scattering study reveals gapped quasi-1D magnetic excitations with a large ratio of gap to exchange interaction. The observed spin-wave spectrum could be well fitted with a ferromagnetic isotropic exchange model (with $J = 3.7 $ meV) and single ion anisotropy ($D=10$ meV) on the Ni$^{2+}$ site. The magnetic excitations survive up to 85 K, well above the magnetic ordering temperature of $\sim 50$ K, also indicating a quasi-1D nature of the magnetic interactions in Sr$_3$NiRhO$_6$.
description: 13 pages, 13 figures
Comment on "Coulomb Instabilities of a Three-Dimensional Higher-Order Topological Insulator"
Creators: name: Lee, Yu-Wen
name: Yang, Min-Fong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on renormalization-group (RG) calculations, a recent Letter by Zhao et al [Phys. Rev. Lett. 127, 176601 (2021)] claimed that three-dimensional second-order topological insulators (SOTIs) are always unstable to the Coulomb interaction and they will thus undergo topological phase transitions to either topological insulators (TIs) or normal insulators. While the calculations in this paper are correct, the conclusion about the topological phase transition from SOTI to TI is not true. The reason behind this false conclusion lies in that the authors use a wrong criterion to identify the phase transition. In this Comment we would like to remind that, to locate the possible transitions from SOTI to TI, an appropriate quantity is the sign-changing mass gap $m_\textrm{surf}$ for the surface states. By examining its behavior within RG approach, the stability of SOTI against weak Coulomb interactions is demonstrated.
description: 3 pages, 1 figure
Quantifying imaginarity in terms of pure-state imaginarity
Creators: name: Du, Shuanping
name: Bai, Zhaofang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Complex numbers are widely used in quantum physics and are indispensable components for describing quantum systems and their dynamical behavior. The resource theory of imaginarity has been built recently, enabling a systematic research of complex numbers in quantum information theory. In this work, we develop two theoretical methods for quantifying imaginarity, motivated by recent progress within resource theories of entanglement and coherence. We provide quantifiers of imaginarity by the convex roof construction and quantifiers of the imaginarity by the least imaginarity of the input pure states under real operations. We also apply these tools to study the state conversion problem in resource theory of imaginarity.
description: 9 pages, 1 figure, 50 references
Magnetic field induced chiral particle-hole condensates
Creators: name: Kotetes, Panagiotis
name: Varelogiannis, Georgios
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We demonstrate that a chiral particle-hole condensate is always induced by a number-conserving ground state of non-zero angular momentum in the presence of a magnetic field. The magnetic interaction originates from the coupling with the intrinsic orbital moment of the chiral state when the field is applied perpendicularly to the plane. According to our numerical results the induction mechanism is practically temperature independent providing robustness to these states up to high temperatures. This opens the door for manipulating the anomalous Hall response resulting from this intricate class of states for technological applications while it also suggests that chiral particle-hole condensates may be hidden in various complex materials.
description: This is the final version accepted by Phys. Rev. B (Brief Reports)
The ACS Nearby Galaxy Survey Treasury IV. The Star Formation History of NGC 2976
Creators: name: Williams, Benjamin F.
name: Dalcanton, Julianne J.
name: Stilp, Adrienne
name: Gilbert, Karoline M.
name: Roskar, Rok
name: Seth, Anil C.
name: Weisz, Daniel
name: Dolphin, Andrew
name: Gogarten, Stephanie M.
name: Skillman, Evan
name: Holtzman, Jon
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present resolved stellar photometry of NGC 2976 obtained with the Advanced Camera for Surveys (ACS) as part of the ACS Nearby Galaxy Survey Treasury (ANGST) program. The data cover the radial extent of the major axis of the disk out to 6 kpc, or ~6 scale lengths. The outer disk was imaged to a depth of M_F606W ~ 1, and an inner field was imaged to the crowding limit at a depth of M_F606W ~ -1. Through detailed analysis and modeling of these CMDs we have reconstructed the star formation history of the stellar populations currently residing in these portions of the galaxy, finding similar ancient populations at all radii but significantly different young populations at increasing radii. In particular, outside of the well-measured break in the disk surface brightness profile, the age of the youngest population increases with distance from the galaxy center, suggesting that star formation is shutting down from the outside-in. We use our measured star formation history, along with H I surface density measurements, to reconstruct the surface density profile of the disk during previous epochs. Comparisons between the recovered star formation rates and reconstructed gas densities at previous epochs are consistent with star formation following the Schmidt law during the past 0.5 Gyrs, but with a drop in star formation efficiency at low gas densities, as seen in local galaxies at the present day. The current rate and gas density suggest that rapid star formation in NGC 2976 is currently in the process of ceasing from the outside-in due to gas depletion. This process of outer disk gas depletion and inner disk star formation was likely triggered by an interaction with the core of the M81 group >~1 Gyr ago that stripped the gas from the galaxy halo and/or triggered gas inflow from the outer disk toward the galaxy center.
description: 22 pages, 14 figures, 2 tables, accepted for publication by ApJ
Presentation on the nestor Endorsement of TRUST Principles
Creators: name: Lindlar, Micky
name: Arnold, Denis
name: Recker, Jonas
name: Schoger, Astrid
name: Schumann, Natascha
Publisher: name: Zenodo
Year: 2021
Subjects: digital preservation
trustworthy repository certification
TRUST principles

description: Short presentation given at RDA17 Breakout 5, April 21st 2021. The presentation introduces the nestor endorsement of the TRUST principles (see https://doi.org/10.5281/zenodo.4120926) as well as the identified benefits and recommendations made by the nestor ad-hoc working group TRUST. It was part of a Breakout Session discussing implementations and use of the TRUST principles (https://www.rd-alliance.org/trust-principles-rda-community-effort). TRUST stands for Transparency, Responsibility, User Focus, Sunstainability and Technology..
Carta do ministro da Educação é ato de improbidade
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Em momento tão sensível, urge ter dupla cautela para a abordagem de assuntos que tangenciem o ambiente político. Fanáticos de lado a lado tendem a catalogar as pessoas pelas opiniões ainda que técnicas sobre determinado tema. Os mais precavidos podem considerar irracional a pauta do artigo. Mas vamos lá. A carta que acompanha o e-mail, de autoria do ministro, está assim redigida: “Brasileiros! Vamos saudar o Brasil dos novos tempos e celebrar a educação responsável e de qualidade a ser desenvolvida na nossa escola pelos professores, em benefício de vocês, alunos, que constituem a nova geração. Brasil acima de tudo. Deus acima de todos!”. Como de se esperar, a medida provocou diversas reações. No ambiente belicoso em que estamos inseridos, as vaias e aplausos tomam conta dos comentários que se seguem às diversas reportagens sobre o ocorrido.
Opportunities for studying $\mathit C$-even resonances at 3-12 GeV photon collider
Creators: name: Beloborodov, K. I.
name: Kharlamova, T. A.
name: Moortgat-pick, G.
name: Telnov, V. I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Recently, a $γγ$ collider based on the existing 17.5 GeV linac of the European XFEL has been proposed. High-energy photons will be generated by Compton scattering of laser photons with a wavelength of 0.5-1 $μ$m on electrons. Such a photon collider covers the range of invariant masses $W_{γγ} <12$ GeV. The physics program includes spectroscopy of $\mathit C$-even resonances ($c$-, $b$-quarkonia, 4-quark states, glueballs) in various $J^P$ states. Variable circular and linear polarizations will help in determining the quantum numbers. In this paper, we present a summary of measured and predicted two-photon widths of various resonances in the mass region 3-12 GeV and investigate the experimental possibility of observing these heavy two-photon resonances under the conditions of a large multi-hadron background. Registration of all final particles is assumed. The minimum values of $Γ_{γγ}(W)$ are obtained at which resonances can be detected at a $5σ$ confidence level in one year of operation.
description: 12 pages, 16 figures