cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermal and electrical cross-plane conductivity at the nanoscale in poly(3,4-ethylenedioxythiophene):trifuoromethanesulfonate thin films
Creators: name: Kondratenko, K.
name: Guerin, D.
name: Wallart, X.
name: Lenfant, S.
name: Vuillaume, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Cross-plane electrical and thermal transport in thin films of a conducting polymer (poly(3,4-ethylenedioxythiophene), PEDOT) stabilized with trifluoromethanesulfonate (OTf) is investigated in this study. We explore their electrical properties by conductive atomic force microscopy (C-AFM), which reveals the presence of highly conductive nano-domains. Thermal conductivity in cross-plane direction is measured with Null-Point scanning thermal microscopy (NP-SThM): PEDOT:OTf indeed demonstrates non-negligible electronic contribution to the thermal transport. We further investigate the correlation between electrical and thermal conductivity by applying posttreatment: chemical reduction (de-doping) for the purpose of lowering charge carrier concentration and hence, electrical conductivity and acid treatment (over-doping) to increase the latter. From our measurements, we find a vibrational thermal conductivity of 0.34 (+/- 0.04) Wm-1 K-1. From the linear dependence or the electronic contribution of thermal conductivity vs. the electronic conductivity (Widemann-Franz law), we infer a Lorenz number 6 times larger than the classical Sommerfeld value as also observed in many organic materials for in-plane thermal transport. Applying the recently proposed molecular Widemann-Franz law, we deduced a reorganization energy of 0.53 (+/- 0.06) eV.
Nonlinear damped spatially periodic breathers and the emergence of soliton-like rogue waves
Creators: name: Schober, C. M.
name: Islas, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The spatially periodic breather solutions (SPBs) of the nonlinear Schrödinger equation, prominent in modeling rogue waves, are unstable. In this paper we numerically investigate the effects of nonlinear dissipation and higher order nonlinearities on the routes to stability of the SPBs in the framework of the nonlinear damped higher order nonlinear Schrödinger (NLD-HONLS) equation. The initial data used in the experiments are generated by evaluating exact SPB solutions at time $T_0$. The number of instabilities of the background Stokes wave and the damping strength are varied. The Floquet spectral theory of the NLS equation is used to interpret and provide a characterization of the perturbed dynamics in terms of nearby solutions of the NLS equation. Significantly, as $T_0$ is varied, tiny bands of complex spectrum are observed to pinch off in the Floquet decomposition of the NLD-HONLS data, reflecting the breakup of the SPB into a waveform that is close to either a one or two "soliton-like" structure. For wide ranges of $T_0$, i.e. for solutions initialized in the early to middle stage of the development of the MI, all rogue waves are observed to occur when the spectrum is close to a one or two soliton-like state. When the solutions are initialized as the MI is saturating, rogue waves also can occur after the spectrum has left a soliton-like state. Other novel features arise due to nonlinear damping: enhanced asymmetry, two timescales in the evolution of the spectrum and a delay in the growth of instabilities due to frequency downshifting.
description: 17 pages, 43 figures. arXiv admin note: text overlap with arXiv:2011.13334
Computing X-ray absorption spectra from linear-response particles atop optimized holes
Creators: name: Hait, Diptarka
name: Oosterbaan, Katherine J.
name: Carter-Fenk, Kevin
name: Head-Gordon, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: State specific orbital optimized density functional theory (OO-DFT) methods like restricted open-shell Kohn-Sham (ROKS) can attain semiquantitative accuracy for predicting X-ray absorption spectra of closed-shell molecules. OO-DFT methods however require that each state be individually optimized. In this work, we present an approach to generate an approximate core-excited state density for use with the ROKS energy ansatz, that is capable of giving reasonable accuracy without requiring state-specific optimization. This is achieved by fully optimizing the core-hole through the core-ionized state, followed by use of electron-addition configuration interaction singles (EA-CIS) to obtain the particle level. This hybrid approach can be viewed as a DFT generalization of the static-exchange (STEX) method, and can attain $\sim 0.6$ eV RMS error for the K-edges of C-F through the use of local functionals like PBE and OLYP. This ROKS(STEX) approach can also be used to identify important transitions for full OO ROKS treatment, and can thus help reduce the computational cost for obtaining OO-DFT quality spectra. ROKS(STEX) therefore appears to be a useful technique for efficient prediction of X-ray absorption spectra.
Investigation of the microstructure of the fine-grained YPO$_4$:Gd ceramics with xenotime structure after Xe irradiation
Creators: name: Mikhailov, D. A.
name: Potanina, E. A.
name: Nokhrin, A. V.
name: Orlova, A. I.
name: Yunin, P. A.
name: Sakharov, N. V.
name: Boldin, M. S.
name: Belkin, O. A.
name: Skuratov, V. A.
name: Isatov, A. T.
name: Chuvil'deev, V. N.
name: Tabachkova, N. Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The paper reports on the preparation of xenotime-structured ceramics by the Spark Plasma Sintering (SPS) method. Phosphates Y$_{0.95}$Gd$_{0.05}$PO$_4$ (YPO$_4$:Gd) were obtained by the sol-gel method. The synthesized nanopowders are collected in large agglomerates 10-50 mkm in size. Ceramics has a fine-grained microstructure and a high relative density (98.67%). The total time of the SPS process was approximately 18 min. High-density sintered ceramics YPO$_4$:Gd with a xenotime structure were irradiated with Xe$^{+26}$ ions (E = 167 MeV) to fluences of $1\times10^{12}$-$3\times 10^{13}$ cm$^{-2}$. Complete amorphization at maximum fluence was not achieved. As the fluence increases, an insignificant increase in the depth of the amorphous layer is observed. According to the results of grazing incidence XRD (GIXRD), with an increase in fluence from $1\times10^{12}$-$3\times 10^{13}$ cm$^{-2}$, an increase in the volume fraction of the amorphous structure from 20 to 70% is observed. The intensity of XRD peak 200 YPO$_4$:Gd after recovery annealing (700$^\circ$C, 18 h) reached a value of ~80% of the initial intensity I0.
description: 16 pages, 10 figures
Tomography-based observational measurements of the halo mass function via the submillimeter magnification bias
Creators: name: Cueli, M. M.
name: Bonavera, L.
name: Gonzalez-Nuevo, J.
name: Crespo, D.
name: Casas, J. M.
name: Lapi, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Aims. The main goal of this paper is to derive observational constraints on the halo mass fuction (HMF) by performing a tomographic analysis of the magnification bias signal on a sample of background submillimeter galaxies. The results can then be compared with those from a non-tomographic study. Methods. We measure the cross-correlation function between a sample of foreground GAMA galaxies with spectroscopic redshifts in the range $0.1 < z < 0.8$ (and divided up into four bins) and a sample of background submillimeter galaxies from H-ATLAS with photometric redshifts in the range $1.2 < z < 4.0$. We model the weak lensing signal within the halo model formalism and carry out a Markov chain Monte Carlo algorithm to obtain the posterior distribution of all HMF parameters, which we assume to follow the Sheth and Tormen (ST) three-parameter and two-parameter fits. Results. While the observational constraints on the HMF from the non-tomographic analysis are not stringent, there is a remarkable improvement in terms of uncertainty reduction when tomography is adopted. Moreover, with respect to the traditional ST triple of values from numerical simulations, the results from the three-parameter fit predict a higher number density of halos at masses below $10^{12}M_{\odot}/h$ at 95% credibility. The two-parameter fit yields even more restricting results, with a larger number density of halos below $10^{13}M_{\odot}/h$ and a lower one above $10^{14}M_{\odot}/h$, this time at more than 3$σ$ credibility. Our results are therefore in disagreement with the standard N-body values for the ST fit at 2$σ$ and 3$σ$, respectively.
Grasshoffia Williams 2015
Creators: name: Williams, Gary C.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Anthozoa
Pennatulacea
Virgulariidae
Grasshoffia

description: Grasshoffia Williams, 2015
 Grasshoffia Williams, 2015:41.
 GENERIC DIAGNOSIS (modified from Williams, 2015:41).— Virgulariid sea pens; polyp leaves funnel-shaped and rolled or ovate and flattened; 10–26 autozooids per polyp leaf; sclerites of polyp leaves slightly three-flanged rods with parallel lateral sides and ends triangular or truncate, 0.02– 0.08 mm in length (modified from Williams, 2015:41).
 TYPE SPECIES.— Grasshoffia virgularioides Williams, 2015.
description: Published as part of Williams, Gary C., 2017, The Genus Grasshoffia with the Description of a New Deep-water Species from the Northern Philippines (Octocorallia: Pennatulacea: Virgulariidae), pp. 95-105 in Proceedings of the California Academy of Sciences 64 (4) on page 97, DOI: 10.5281/zenodo.13155406
Rare radiative decays of charm baryons
Creators: name: Adolph, Nico
name: Hiller, Gudrun
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study weak radiative $|Δc|=|Δu|=1$ decays of the charmed anti-triplett ($Λ_c$, $Ξ_c^{+}$, $Ξ_c^{0}$) and sextet ($Σ_c^{++}$, $Σ_c^+$, $Σ_c^0$, $Ξ_c^{\prime +}$, $Ξ_c^{\prime 0}$, $Ω_c$) baryons in the standard model (SM) and beyond. We work out $SU(2)$ and $SU(3)_F$-symmetry relations. We propose to study self-analyzing decay chains such as $Ξ_c^+ \to Σ^+ (\to p π^0) γ$ and $Ξ_c^0 \to Λ(\to p π^-) γ$, which enable new physics sensitive polarization studies. SM contributions can be controlled by corresponding analysis of the Cabibbo-favored decays $Λ_c^+ \to Σ^+ (\to p π^0) γ$ and $Ξ_c^0 \to Ξ^0 (\to Λπ^0) γ$. Further tests of the SM are available with initially polarized baryons including $Λ_c \to p γ$ together with $Λ_c \to Σ^+ γ$ decays, or $Ω_c \to Ξ^0 γ$ together with $Ω_c \to (Λ,Σ^0) γ$. In addition, CP-violating new physics contributions to dipole operators can enhance CP-asymmetries up to few percent.
description: 30 pages, 3 figures, 15 tables
A zero-curvature representation of electromagnetism and the conservation of electric charge
Creators: name: Luchini, G.
name: Zaché, V. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We show that the laws of electromagnetism in $(D+1)$-dimensional Minkowski space-time $\mathcal{M}$, explicitly for $D=1$, $2$ and $3$, can be obtained from an integral representation of the zero-curvature equation in the corresponding loop space $\mathcal{L}^{(D-1)}(\mathcal{M})$. The conservation of the electric charge can be seen as the result of a hidden symmetry in this representation of the dynamical equations.
Sonnenfleckenzeichnung Nr. 3632.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.06.1902, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1902

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
Geometry of transit orbits in the periodically-perturbed restricted three-body problem
Creators: name: Fitzgerald, Joshua
name: Ross, Shane
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70F07 (Primary)

description: In the circular restricted three-body problem, low energy transit orbits are revealed by linearizing the governing differential equations about the collinear Lagrange points. This procedure fails when time-periodic perturbations are considered, such as perturbation due to the sun (i.e., the bicircular problem) or orbital eccentricity of the primaries. For the case of a time-periodic perturbation, the Lagrange point is replaced by a periodic orbit, equivalently viewed as a hyperbolic-elliptic fixed point of a symplectic map (the stroboscopic Poincaré map). Transit and non-transit orbits can be identified in the discrete map about the fixed point, in analogy with the geometric construction of Conley and McGehee about the index-1 saddle equilibrium point in the continuous dynamical system. Furthermore, though the continuous time system does not conserve the Hamiltonian energy (which is time-varying), the linearized map locally conserves a time-independent effective Hamiltonian function. We demonstrate that the phase space geometry of transit and non-transit orbits is preserved in going from the unperturbed to a periodically-perturbed situation, which carries over to the full nonlinear equations.
description: 19 pages, 13 figures, submitted to Advances in Space Research
title: Transient Simulations and Modelling of Semi-Insulating GaAs Photoconductive Switches
Creators: name: Raha, Prasun Kumar
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1994

description: The primary objective of this thesis is to develop a one-dimensional transient simulator for Photoconductive Semiconductor Switches (PCSS) taking into consideration the material characteristics, the internal physical effects, and the external circuit. Simulations have been performed to study the device behavior at different voltage levels for copper-doped silicon-compensated GaAs material, though other materials could easily be simulated by changing the parameters. The model includes hole transport, and the results demonstrate the effect of hole injection, with and without recombination centers. In addition to developing a one-dimensional transient simulator, the role of various physical effects, such as the field-dependence of trapping rates, field-dependent impact-ionization, and movement of internal domains, have also been analyzed. The thesis also suggests various other factors which could be included to make the device model more accurate. These include tailoring the impurity profiles to prevent lock-on, more accurate modelling of the contacts, spatial profiling of the excitation pulse and including impact-ionization for breakdown analysis. Finally discussions on possible expansion to a two-dimensional model and the potential for developing effective circuit models are presented.
Glyptothorax punjabensis Mirza & Kashmiri 1971
Creators: name: Çiçek, Erdoğan
name: Fricke, Ronald
name: Eagderi, Soheil
name: Sungur, Sevil
name: Coad, Brian W
name: Hamdard, Mohammad Hamid
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Sisoridae
Glyptothorax
Glyptothorax punjabensis

description: Glyptothorax punjabensis Mirza & Kashmiri, 1971
Remarks. This species is listed by Coad (1981: 14) as a possible distributed species in Kabul tributaries in Afghanistan. However, it is distributed the Indus River drainage between Pakistan and India. The presence of the species needs clarification.
description: Published as part of Çiçek, Erdoğan, Fricke, Ronald, Eagderi, Soheil, Sungur, Sevil, Coad, Brian W & Hamdard, Mohammad Hamid, 2023, Fishes of Afghanistan; a revised and updated annotated checklist, pp. 1-69 in Zootaxa 5305 (1) on page 54, DOI: 10.11646/zootaxa.5305.1.1, http://zenodo.org/record/8048564
Everything We Hear: Towards Tackling Misinformation in Podcasts
Creators: name: Cherumanal, Sachin Pathiyan
name: Gadiraju, Ujwal
name: Spina, Damiano
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Advances in generative AI, the proliferation of large multimodal models (LMMs), and democratized open access to these technologies have direct implications for the production and diffusion of misinformation. In this prequel, we address tackling misinformation in the unique and increasingly popular context of podcasts. The rise of podcasts as a popular medium for disseminating information across diverse topics necessitates a proactive strategy to combat the spread of misinformation. Inspired by the proven effectiveness of \textit{auditory alerts} in contexts like collision alerts for drivers and error pings in mobile phones, our work envisions the application of auditory alerts as an effective tool to tackle misinformation in podcasts. We propose the integration of suitable auditory alerts to notify listeners of potential misinformation within the podcasts they are listening to, in real-time and without hampering listening experiences. We identify several opportunities and challenges in this path and aim to provoke novel conversations around instruments, methods, and measures to tackle misinformation in podcasts.
description: Accepted at ACM ICMI'24 (Third Place Blue Sky Paper)
Reduction of the lasing threshold in optically pumped AlGaN/GaN lasers with two-step etched facets
Creators: name: Cuesta, Sergi
name: Denaix, Lou
name: Castioni, Florian
name: Dang, Le Si
name: Monroy, Eva
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report a two-step process to obtain smooth and vertical {10-10} m-plane facets in AlGaN/GaN separate confinement heterostructures designed to fabricate UV lasers emitting at 355 nm. The process consists in a dry etching by RIE-ICP combined with a crystallographic-selective wet etching process using a KOH-based solution. The anisotropy in the wet etching rates between the different crystallographic planes of the AlGaN structure, allows the fabrication of flat and parallel facets without a degradation of the multilayered ensemble. The optical performance of the lasers display a major improved when using the two-step process for the definition of the cavity, in comparison to cavities fabricated by mechanical cleaving, with the lasing threshold under optical pumping being reduced to almost half.
description: 20 pages, 5 figures
Testudo hermanni Gmelin, 1789: 1041
Creators: name: Bauer, Aaron M.
name: DeBoer, Jonathan C.
name: Taylor, Dylan J.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Testudines
Cryptodira
Testudinidae
Testudo
Testudo hermanni

description: Testudo hermanni Gmelin, 1789:1041
Reported by Luiselli et al. (2012) from Libya, but without specific data. Although introduced individuals may exist, there are no documented records of this species outside of southern Europe and its associated islands (Sindaco and Jeremčenko 2008).
  Testudo marginata Schoepff, 1793:58, pl. XI, pl. XII, fig. 1. [German edition]/Schoepff, 1793:52, pl. XI, pl. XII, fig. 1.
 Reported by Luiselli et al. (2012) from Libya, but without specific data. Peters (1880, 1881) reported T. campanulata [= T. marginata] from Bir-Milrha. However, Schneider and Schneider (2008) argued that the likely species intended was T. kleinmanni, based on the similarity of plastron pattern between adult T. kleinmanni and juvenile T. marginata.
description: Published as part of Bauer, Aaron M., DeBoer, Jonathan C. & Taylor, Dylan J., 2017, Atlas of the Reptiles of Libya, pp. 155-318 in Proceedings of the California Academy of Sciences 64 (8) on page 265, DOI: 10.5281/zenodo.13155907
Electron scattering of light new particles from evaporating primordial black holes
Creators: name: Calabrese, Roberta
name: Chianese, Marco
name: Fiorillo, Damiano F. G.
name: Saviano, Ninetta
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Primordial black holes are a possible component of dark matter, and a most promising way of investigating them is through the product of their Hawking evaporation. As a result of this process, any species lighter than the Hawking temperature is emitted, including possible new particles beyond the Standard Model. These can then be detected in lab-based experiments via their interaction with the Standard Model particles. In a previous work, we have first proposed and studied this scenario in the presence of an interaction between the light new species and nucleons. Here we extend this discussion to include the case of interaction with electrons. We show that the simultaneous presence of primordial black holes and species lighter than about $100$ MeV can be constrained by the measurements of direct detection experiments, such as XENON1T, and water Cherenkov neutrino detectors, such as Super-Kamiokande. Our results provide a complementary and alternative way of investigation with respect to cosmological and collider searches.
description: 11 pages, 3 figures v2: version published in Physical Review D text typo corrects
Triangle singularities in the $T^+_{cc}\to D^{*+}D^0\toπ^+D^0D^0$ decay width
Creators: name: Achasov, N. N.
name: Shestakov, G. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The values of the masses of the particles involved in the decay of $T^+_{cc}\to D^{*+}D^0\toπ^+D^0D^0$ suggest that due to the final state interactions in the transition vertex $T^+_{cc}\to D^{*+}D^0 $ there may be triangle logarithmic singularities. We discuss their possible role and show that the tree approximation for calculating the decay widths $T^+_{cc}\to(D^{*+}D^0+D^{*0}D^+)\toπ^+D^0D^0$, $π^0D^0 D^+$, $γD^0D^+$ is quite sufficient at the current level of measurement accuracy.
description: 5 pages, 4 figures; v2: published version, elusidations and four references added
TALABALARNING TURIZM MADANIYATINI RIVOJLANTIRISH METODIKASINI TAKOMILASHTIRISH PEDAGOGIK MUAMMO SIFATIDA
Creators: name: Amanbaev, Timur
Publisher: name: Zenodo
Year: 2024

description: Raqamlі texnologіyalar yordamіda talabalar turіzm madanіyatіnі rіvojlantіrіsh jarayonіda іnnovatsіon yondashuvlarnі qo‘llash, o‘quv materіallarіnі raqamlі formatda taqdіm etіsh va іnteraktіv o‘qіtіsh usullarіnі jorіy etіsh іmkonіyatlarіnі yaratadі. Ushbu jarayon talabalarnі zamonavіy mehnat bozorіda raqobatbardosh qіlіb tayyorlash va ularnіng shaxsіy rіvojlanіshіda katta rol o‘ynaydі.
Magnetism, rotation, and nonthermal emission in cool stars -- Average magnetic field measurements in 292 M dwarfs
Creators: name: Reiners, A.
name: Shulyak, D.
name: Käpylä, P. J.
name: Ribas, I.
name: Nagel, E.
name: Zechmeister, M.
name: Caballero, J. A.
name: Shan, Y.
name: Fuhrmeister, B.
name: Quirrenbach, A.
name: Amado, P. J.
name: Montes, D.
name: Jeffers, S. V.
name: Azzaro, M.
name: Béjar, V. J. S.
name: Chaturvedi, P.
name: Henning, Th.
name: Kürster, M.
name: Pallé, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar dynamos generate magnetic fields that are of fundamental importance to the variability and evolution of Sun-like and low-mass stars, and for the development of their planetary systems. We report measurements of surface-average magnetic fields in 292 M dwarfs from a comparison with radiative transfer calculations; for 260 of them, this is the first measurement of this kind. Our data were obtained from more than 15,000 high-resolution spectra taken during the CARMENES project. They reveal a relation between average field strength, , and Rossby number, $Ro$, resembling the well-studied rotation-activity relation. Among the slowly rotating stars, we find that magnetic flux, $Φ_\textrm{B}$, is proportional to rotation period, $P$, and among the rapidly rotating stars that average surface fields do not grow significantly beyond the level set by the available kinetic energy. Furthermore, we find close relations between nonthermal coronal X-ray emission, chromospheric H$α$ and Ca H&K emission, and magnetic flux. Taken together, these relations demonstrate empirically that the rotation-activity relation can be traced back to a dependence of the magnetic dynamo on rotation. We advocate the picture that the magnetic dynamo generates magnetic flux on the stellar surface proportional to rotation rate with a saturation limit set by the available kinetic energy, and we provide relations for average field strengths and nonthermal emission that are independent of the choice of the convective turnover time. We also find that Ca H&K emission saturates at average field strengths of $\langle B \rangle \approx 800$ G while H$α$ and X-ray emission grow further with stronger fields in the more rapidly rotating stars. This is in conflict with the coronal stripping scenario predicting that in the most rapidly rotating stars coronal plasma would be cooled to chromospheric temperatures.
description: A&A accepted, abstract abbreviated, 20 pages, Table B.1 included in arXiv version, full MCMC posteriors and linefit plots are available at http://carmenes.cab.inta-csic.es/
Birth places of extreme ultraviolet waves driven by impingement of solar jets upon coronal loops
Creators: name: Zhang, Liang
name: Zheng, Ruisheng
name: Chen, Huadong
name: Chen, Yao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar extreme ultraviolet (EUV) waves are large-scale propagating disturbances in the corona. It is generally believed that the vital key for the formation of EUV waves is the rapid expansion of the loops that overlie erupting cores in solar eruptions, such as coronal mass ejections (CMEs) and solar jets. However, the details of the interaction between the erupting cores and overlying loops are not clear, because that the overlying loops are always instantly opened after the energetic eruptions. Here, we present three typical jet-driven EUV waves without CME to study the interaction between the jets and the overlying loops that remained closed during the events. All three jets emanated from magnetic flux cancelation sites in source regions. Interestingly, after the interactions between jets and overlying loops, three EUV waves respectively formed ahead of the top, the near end (close to the jet source), and the far (another) end of the overlying loops. According to the magnetic field distribution of the loops extrapolated from Potential Field Source Surface method, it is confirmed that the birth places of three jet-driven EUV waves were around the weakest magnetic field strength part of the overlying loops. We suggest that the jet-driven EUV waves preferentially occur at the weakest part of the overlying loops, and the location can be subject to the magnetic field intensity around the ends of the loops.
Sonnenfleckenzeichnung Nr. 3559.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.03.1902, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1902

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
The accretion flow geometry of MAXI J1820+070 through broadband noise research with Insight-HXMT
Creators: name: Yang, Zi-Xu
name: Zhang, Liang
name: Bu, Qing-Cui
name: Huang, Yue
name: Liu, He-Xin
name: Yu, Wei
name: Wang, P. J.
name: Tao, L.
name: Qu, J. L.
name: Zhang, S.
name: Zhang, S. N.
name: Ma, X.
name: Song, L. M.
name: Jia, S. M.
name: Ge, M. Y.
name: Liu, Q. Z.
name: Yan, J. Z.
name: Zhou, D. K.
name: Li, T. M.
name: Wu, B. Y.
name: Ren, X. Q.
name: Ma, R. C.
name: Zhang, Y. X.
name: Xu, Y. C.
name: Du, Y. F.
name: Fu, Y. C.
name: Xiao, Y. X.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Here we present a detailed study of the broadband noise in the power density spectra of the black hole X-ray binary MAXI J1820+070 during the hard state of its 2018 outburst, using the Hard X-ray Modulation Telescope (Insight-HXMT) observations. The broadband noise shows two main humps, which might separately correspond to variability from a variable disk and two Comptonization regions. We fitted the two humps with multiple Lorentzian functions and studied the energy-dependent properties of each component up to 100--150 keV and their evolution with spectral changes. The lowest frequency component is considered as the sub-harmonic of QPO component and shows different energy dependence compared with other broadband noise components. We found that although the fractional rms of all the broadband noise components mainly decrease with energy, their rms spectra are different in shape. Above $\sim$ 20--30 keV, the characteristic frequencies of these components increase sharply with energy, meaning that the high-energy component is more variable on short timescales. Our results suggest that the hot inner flow in MAXI J1820+070 is likely to be inhomogeneous. We propose a geometry with a truncated accretion disk, two Comptonization regions.
Pterocryptis gangelica Peters 1861
Creators: name: Çiçek, Erdoğan
name: Fricke, Ronald
name: Eagderi, Soheil
name: Sungur, Sevil
name: Coad, Brian W
name: Hamdard, Mohammad Hamid
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Siluridae
Pterocryptis
Pterocryptis gangelica

description: Pterocryptis gangelica Peters, 1861
Remarks. Silurus afghana is a synonym of Pterocryptis gangelica listed by Coad (1981) in Afghanistan. However, Silurus afghana is not identified as being from Afghanistan. It is from Assam, India. Afghanistan is not included in the natural distribution range of the species. The presence of the species needs clarification.
description: Published as part of Çiçek, Erdoğan, Fricke, Ronald, Eagderi, Soheil, Sungur, Sevil, Coad, Brian W & Hamdard, Mohammad Hamid, 2023, Fishes of Afghanistan; a revised and updated annotated checklist, pp. 1-69 in Zootaxa 5305 (1) on page 54, DOI: 10.11646/zootaxa.5305.1.1, http://zenodo.org/record/8048564
Nuovi dati sulla neolitizzazione della fascia costiera della Sardegna sud-occidentale
Creators: name: Canino, Gianfrancesco
Publisher: name: University of Cagliari
Year: 2018
Subjects: Neolitico antico; ossidiana; diaspro; pomice; siti costieri; Sardegna sud-occidentale

description: Le ricerche e i rinvenimenti fortuiti che si succedono da un cinquantennio nel Sulcis hanno evidenziato, soprattutto lungo la fascia costiera, ma anche al suo interno, un numero consistente disiti risalenti alle fasi del Neolitico antico (5.700-4.750 BC ca.).
Si presentano ora i risultati dell'analisi dell'industria litica d’ossidiana e di diaspro rinvenuta in alcune località inedite, situate lungo la costa dei territori comunali di San Giovanni Suergiu e di Portoscuso.
description: Layers. Archeologia Territorio Contesti, N. 3 (2018)
Lopsided galactic disks in IllustrisTNG
Creators: name: Lokas, Ewa L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A significant fraction of nearby late-type galaxies are lopsided. We study the asymmetry of the stellar component in a sample of well-resolved disky galaxies selected from the last snapshot of the Illustris TNG100 simulation based on their flatness and rotational support. Among 1912 disks, we identify 161 objects with significant asymmetry in terms of the m=1 Fourier mode of the stellar component within (1-2) stellar half-mass radii and describe their properties using three representative examples. The profiles of the m=1 mode typically increase with radius, and the corresponding phase is constant in the asymmetric region, signifying a global distortion. Following the evolution of the lopsided disks over time, we find that their history is rather uneventful and the occurrence of the asymmetry is fairly recent. Only about 1/3 of the lopsided disks experienced any strong interaction recently that could have led to the distortion of their shape: 24% were affected by a more massive object and 9% underwent a gas-rich merger. Still, a majority of lopsided disks show a significant increase in their recent star formation rate. The most frequent mechanism for the formation of lopsided disks thus seems to be asymmetric star formation probably related to gas accretion, although the distortions in the gas and stars are not strongly correlated. This picture is supported by the finding that the lopsided population on average contains more gas, has higher star formation rate, lower metallicity and bluer color than the remaining disks. These correlations are similar to those seen in real galaxies, even though the fraction of simulated lopsided disks (8%) is much lower than in observations (30%). The observed correlation between the presence of the asymmetry and a bar is not reproduced either. These discrepancies may be due to overquenching or insufficient resolution of IllustrisTNG simulations.
description: 9 pages, 11 figures, accepted for publication in A&A
title: Encoding Phonetic Knowledge for Use in Hidden Markov Models of Speech Recognition
Creators: name: Qian, Danming
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1990

description: Hidden Markov models (HMM's) have achieved considerable success for isolated-word speaker-independent automatic speech recognition. However, the performance of an HMM algorithm is limited by its inability to discriminate between similar sounding words. The problem arises because all differences between speech patterns are treated as equally important. Thus the algorithm is particularly susceptible to confusions caused by phonetically-irrelevant differences. This thesis presents two types of preprocessing schemes as candidates for improving HMM performance. The aim is to maximize the differences between phonologically-distinct speech sounds while minimizing the effect of variations in phonologically-equivalent speech sounds. The preprocessors presented are a discrete cosine transformation (OCT) and linear discriminant analysis type transformation (LDA).

The HMM used in this investigation is a five-state, left-to-right structure. All the experiments were performed with either 30 or 99 highly confusable words from a eve isolated-word data base. Computations were performed on UNIX SUN work stations. All words were hand labeled in acoustic-phonetic segments. The DCT preprocessing, terms of a block transform encoding with data-independent basis vectors, was not found to be successful for improving overall word recognition performance. In contrast, the LDA preprocessing method did improve HMM word recognition accuracy. The LDA bas is vectors were computed from signal statistics so as to maximize the ratio of between to within phonetic class data variance. The LDA technique requires phonetically segmented data for training. Using speaker independent word recognition tests, i.e., one set of speakers for training and another set of speakers for testing, the LDA method reduced HMM word errors over 45%. Results show that discrimination between similar sounding words can be greatly improved.

The results of the research conducted in this study not only gives additional insights into the basic operation of hidden Markov modeling for speech recognition, but also could potentially be applied to large vocabulary continuous-speech speaker-independent speech recognition. It shows that significant improvements in speech recognition system performance may be achieved by better acoustic-phonetic modeling.
La romanizzazione del Sulcis-Iglesiente. Contributo allo studio delle fasi di acculturazione attraverso l’analisi delle testimonianze d’età romana
Creators: name: Arca, Giulio Alberto
Publisher: name: University of Cagliari
Year: 2018
Subjects: Archeologia del paesaggio

description: Attraverso un’analisi territoriale basata sull’individuazione delle emergenze archeologiche del Sulcis-Iglesiente si cerca di fornire uno strumento preliminare atto all’approfondimento delle questioni insediative della subregione durante tutta l’età romana, provando ad individuare i vari livelli di compenetrazione socio-culturale e lungo quali canali essi si svilupparono.
description: Layers. Archeologia Territorio Contesti, N. 3 (2018)
La morte per acqua. Iconografia di un thiasos marino su un frammento di sarcofago inedito del Museo Civico Giovanni Marongiu, Cabras (OR)
Creators: name: Parodo, Ciro
Publisher: name: University of Cagliari
Year: 2018
Subjects: Manufatti archeologici

description: Riassunto: Il reperto inedito oggetto del presente studio, attualmente custodito presso i magazzini del Museo Civico Giovanni Marongiu di Cabras (OR), consiste nel frammento di un sarcofago marmoreo decorato con una scena di thiasos marino. L’obiettivo di questo contributo si focalizza sull’analisi iconografica di tale immagine allo scopo di indagare il suo significato nella scultura funeraria romana e conseguentemente anche le dinamiche socio-culturali che ne hanno determinato l’uso da parte della committenza.

Abstract: This study concerns an unpublished fragment of a marble sarcophagus decorated with a scene of sea thiasos, now in the warehouses of the Museo Civico Giovanni Marongiu at Cabras (OR). By means of the iconographic analysis of this image, the aim of this paper is to investigate its meaning in the Roman funeral sculpture and consequently as well the social and cultural dynamics that have determined its use by the patronage.
description: Layers. Archeologia Territorio Contesti, N. 3 (2018)
Validations and Corrections of the SFD and Planck Reddening Maps Based on LAMOST and Gaia Data
Creators: name: Sun, Yang
name: Yuan, Haibo
name: Chen, Bingqiu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Precise correction of dust reddening is fundamental to obtain the intrinsic parameters of celestial objects. The Schlegel et al. (SFD) and the Planck 2D extinction maps are widely used for the reddening correction. In this work, using accurate reddening determinations of about two million stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) data release 5 (DR5) and Gaia DR2, we check and calibrate the SFD and Planck maps in the middle and high Galactic latitudes. The maps show similar precision in reddening correction. We find small yet significant spatially dependent biases for the four maps, which are similar between the SFD and Planck2014-R maps, and between the Planck2014-Tau and Planck2019-Tau maps. The biases show a clear dependence on the dust temperature and extinction for the SFD and Planck2014-R maps. While those of the Planck2014-Tau and Planck2019-Tau maps have a weak dependence on the dust temperature, they both strongly depend on the dust spectral index. Finally, we present corrections of the SFD and Planck extinction maps within the LAMOST footprint, along with empirical relations for corrections outside the LAMOST footprint. Our results provide important clues for the further improvement of the Galactic all-sky extinction maps and lay an significant foundation for the accurate extinction correction in the era of precision astronomy.
description: 25 pages, 18 figures, accepted for publication in ApJS. For associated .fits file and public codes, please see \url{http://paperdata.china-vo.org/Dustmaps-correction/extinction-maps-correction.zip} and \url{https://github.com/qy-sunyang/Extinction-Maps-Correction}
Recensione a: Gianni Berengo Gardin, Marco Edoardo Minoja, Architetture di pietra. Fotografie della Sardegna nuragica, Imago Edizioni, Nuoro 2017. Pp. 255 ISBN: 978-88-8954-548-5.
Creators: name: Giuman, Marco
Publisher: name: University of Cagliari
Year: 2018

description: Si tratta della recensione del volume fotografico curato da Gianni Berengo Gardin e Marco Edoardo Minoja, dedicato alla Sardegna in età nuragica.
description: Layers. Archeologia Territorio Contesti, N. 3 (2018)
Leveraging Weak Cross-Modal Guidance for Coherence Modelling via Iterative Learning
Creators: name: Bin, Yi
name: Liao, Junrong
name: Ding, Yujuan
name: Li, Haoxuan
name: Yang, Yang
name: Ng, See-Kiong
name: Shen, Heng Tao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Multimedia (cs.MM)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Cross-modal coherence modeling is essential for intelligent systems to help them organize and structure information, thereby understanding and creating content of the physical world coherently like human-beings. Previous work on cross-modal coherence modeling attempted to leverage the order information from another modality to assist the coherence recovering of the target modality. Despite of the effectiveness, labeled associated coherency information is not always available and might be costly to acquire, making the cross-modal guidance hard to leverage. To tackle this challenge, this paper explores a new way to take advantage of cross-modal guidance without gold labels on coherency, and proposes the Weak Cross-Modal Guided Ordering (WeGO) model. More specifically, it leverages high-confidence predicted pairwise order in one modality as reference information to guide the coherence modeling in another. An iterative learning paradigm is further designed to jointly optimize the coherence modeling in two modalities with selected guidance from each other. The iterative cross-modal boosting also functions in inference to further enhance coherence prediction in each modality. Experimental results on two public datasets have demonstrated that the proposed method outperforms existing methods for cross-modal coherence modeling tasks. Major technical modules have been evaluated effective through ablation studies. Codes are available at: \url{https://github.com/scvready123/IterWeGO}.
description: Accepted by ACM Multimedia 2024
Sonnenfleckenzeichnung Nr. 3619.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.05.1902, erstellt von Alfred Wolfer
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1902

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zugeordnete numerische Werte wurden in einer separat geführten, chronologischen Tabelle erfasst. Unter Umständen sind tabellarisch notierte Werte, die für Protuberanzen mit rot geschrieben wurden, direkt auf der Fleckenzeichnung vermerkt
description: ETH-Bibliothek
An implicit symplectic solver for high-precision long term integrations of the Solar System
Creators: name: Antoñana, M.
name: Alberdi, E.
name: Makazaga, J.
name: Murua, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Compared to other symplectic integrators (the Wisdom and Holman map and its higher order generalizations) that also take advantage of the hierarchical nature of the motion of the planets around the central star, our methods require solving implicit equations at each time-step. We claim that, despite this disadvantage, FCIRK16 is more efficient than explicit symplectic integrators for high precision simulations thanks to: (i) its high order of precision, (ii) its easy parallelization, and (iii) its efficient mixed-precision implementation which reduces the effect of round-off errors. In addition, unlike typical explicit symplectic integrators for near Keplerian problems, FCIRK16 is able to integrate problems with arbitrary perturbations (non necessarily split as a sum of integrable parts). We present a novel analysis of the effect of close encounters in the leading term of the local discretization errors of our integrator. Based on that analysis, a mechanism to detect and refine integration steps that involve close encounters is incorporated in our code. That mechanism allows FCIRK16 to accurately resolve close encounters of arbitrary bodies. We illustrate our treatment of close encounters with the application of FCIRK16 to a point mass Newtonian 15-body model of the Solar System (with the Sun, the eight planets, Pluto, and five main asteroids) and a 16-body model treating the Moon as a separate body. We also present some numerical comparisons of FCIRK16 with a state-of-the-art high order explicit symplectic scheme for 16-body model that demonstrate the superiority of our integrator when very high precision is required.
Ompok canio
Creators: name: Çiçek, Erdoğan
name: Fricke, Ronald
name: Eagderi, Soheil
name: Sungur, Sevil
name: Coad, Brian W
name: Hamdard, Mohammad Hamid
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Siluridae
Ompok
Ompok canio

description: Ompok canio (Hamilton, 1822)
Remarks. Silurus indicus was reported from the Kabul River by Misra (1976). Then listed by Coad (1981: 16) in Afghanistan as a synonym of Ompok canio. However, it is distributed in the Ganges and Bengal river estuaries. Ompok canio was identified from the Brahmaputra River at Gualpara [Goalpara], Assam, India. Afghanistan is not included in the natural distribution range of the species. The presence of the species needs clarification.
description: Published as part of Çiçek, Erdoğan, Fricke, Ronald, Eagderi, Soheil, Sungur, Sevil, Coad, Brian W & Hamdard, Mohammad Hamid, 2023, Fishes of Afghanistan; a revised and updated annotated checklist, pp. 1-69 in Zootaxa 5305 (1) on page 54, DOI: 10.11646/zootaxa.5305.1.1, http://zenodo.org/record/8048564