cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantitative Perspectives on Fifty Years of the Journal of the History of Biology
Creators: name: Peirson, B. R. Erick
name: Bottino, Erin
name: Damerow, Julia L.
name: Laubichler, Manfred D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Journal of the History of Biology provides a fifty-year long record for examining the evolution of the history of biology as a scholarly discipline. In this paper, we present a new dataset and preliminary quantitative analysis of the thematic content of JHB from the perspectives of geography, organisms, and thematic fields. The geographic diversity of authors whose work appears in JHB has increased steadily since 1968, but the geographic coverage of the content of JHB articles remains strongly lopsided toward the United States, United Kingdom, and western Europe and has diversified much less dramatically over time. The taxonomic diversity of organisms discussed in JHB increased steadily between 1968 and the late 1990s but declined in later years, mirroring broader patterns of diversification previously reported in the biomedical research literature. Finally, we used a combination of topic modeling and nonlinear dimensionality reduction techniques to develop a model of multi-article fields within JHB. We found evidence for directional changes in the representation of fields on multiple scales. The diversity of JHB with regard to the representation of thematic fields has increased overall, with most of that diversification occurring in recent years. Drawing on the dataset generated in the course of this analysis, as well as web services in the emerging digital history and philosophy of science ecosystem, we have developed an interactive web platform for exploring the content of JHB, and we provide a brief overview of the platform in this article. As a whole, the data and analyses presented here provide a starting-place for further critical reflection on the evolution of the history of biology over the past half-century.
description: 45 pages, 14 figures, 4 tables
title: Corpus : FRANÇAIS DES ANNÉES 80 , Transcription : FJ 23 -CLAN
Creators: name: Groupe De Recherche Du CREDIF
name: Mochet, Marie-Anne
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Français
subject: fra

description: Interactions construites
description: Interaction en face à face sur un thème imposé
description: En orthographe adaptee, Toilettée, Minutée
description: La convention de transcription est accessible dans CLAPI
description: Accès dans CLAPI aux 75 descripteurs documentant le corpus
description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Large-gap magnetic topological heterostructure formed by subsurface incorporation of a ferromagnetic layer
Creators: name: Hirahara, Toru
name: Eremeev, Sergey V.
name: Shirasawa, Tetsuroh
name: Okuyama, Yuma
name: Kubo, Takayuki
name: Nakanishi, Ryosuke
name: Akiyama, Ryota
name: Takayama, Akari
name: Hajiri, Tetsuya
name: Ideta, Shin-ichiro
name: Matsunami, Masaharu
name: Sumida, Kazuki
name: Miyamoto, Koji
name: Takagi, Yasumasa
name: Tanaka, Kiyohisa
name: Okuda, Taichi
name: Yokoyama, Toshihiko
name: Kimura, Shin-ichi
name: Hasegawa, Shuji
name: Chulkov, Evgueni V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inducing magnetism into topological insulators is intriguing for utilizing exotic phenomena such as the quantum anomalous Hall effect (QAHE) for technological applications. While most studies have focused on doping magnetic impurities to open a gap at the surface-state Dirac point, many undesirable effects have been reported to appear in some cases that makes it difficult to determine whether the gap opening is due to the time-reversal symmetry breaking or not. Furthermore, the realization of the QAHE has been limited to low temperatures. Here we have succeeded in generating a massive Dirac cone in a MnBi2Se4 /Bi2Se3 heterostructure which was fabricated by self-assembling a MnBi2Se4 layer on top of the Bi2Se3 surface as a result of the co-deposition of Mn and Se. Our experimental results, supported by relativistic ab initio calculations, demonstrate that the fabricated MnBi2Se4 /Bi2Se3 heterostructure shows ferromagnetism up to room temperature and a clear Dirac-cone gap opening of ~100 meV without any other significant changes in the rest of the band structure. It can be considered as a result of the direct interaction of the surface Dirac cone and the magnetic layer rather than a magnetic proximity effect. This spontaneously formed self-assembled heterostructure with a massive Dirac spectrum, characterized by a nontrivial Chern number C = -1, has a potential to realize the QAHE at significantly higher temperatures than reported up to now and can serve as a platform for developing future " topotronics" devices.
description: 13pages, 4 figures
Electron magnetic moment of transient chiral phonons in KTaO$_3$
Creators: name: Geilhufe, R. Matthias
name: Hergert, Wolfram
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: High intensity THz lasers allow for the coherent excitation of individual phonon modes. The ultrafast control of emergent magnetism by means of phonons opens up new tuning mechanisms for functional materials. While theoretically predicted phonon magnetic moments are tiny, recent experiments hint towards a significant magnetization in various materials. To explain these phenomena, we derive a coupling mechanism between the phonon angular momentum and the electron spin. This coupling introduces the transient level-splitting of spin-up and spin-down channels and a resulting magnetization. We estimate this magnetization on the example of the lowest infrared active mode in the perovskite KTaO$_3$. Our results show an electronic magnetic moment of $\approx 10^{-1}$ $μ_B$ per unit cell, depending on the doping level and electron temperature.
description: 6 pages, 5 figures
Are Narrow-Line Seyfert 1s Really Strange?
Creators: name: Taylor, Jason A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Narrow-Line Seyfert 1s (NLS1s) are generally considered to be strange Active Galactic Nuclei (AGNs). Surprisingly, this makes them very useful for constraining models. I discuss what happens when one attempts to qualitatively fit the NLS1 phenomenon using the stellar wind model for AGN line emission (e.g., Kazanas 1989). The simplest way of narrowing profile bases of this model to the widths observed in NLS1s is probably to lower the mass of the supermassive black hole. In a flux-limited and redshift-limited data set, this is indeed similar to increasing L/L_Edd. Because the broad line region (BLR) of the stellar line emission model scales with the tidal radius of the stars, this model predicts maximal BLR velocities of FWZI proportional (L/L_Edd)^(-1/3). This implies that the black holes of NLS1s are approximately 3^3=27 times less massive than those in other Seyfert 1s if the stellar line emission model is correct. Another consequence of increasing L/L_Edd in this model is that it results in an increase in the wind edge densities. NLS1 spectra appear to support this result as well. Even the collateral features of NLS1s, such as the line asymmetries and continuum properties, appear to be easily explained within the context of this model. For better or worse, if the stellar wind line emission is correct, NLS1s are not much stranger than other AGNs.
description: Contributed talk presented at the Joint MPE,AIP,ESO workshop on NLS1s, Bad Honnef, Dec. 1999, to appear in New Astronomy Reviews; also available at http://wave.xray.mpe.mpg.de/conferences/nls1-workshop
title: ADCO, Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Cart. 29 (G 134), 996 folios, f. 0139
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0139, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0139, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Additional file 3: of Characterization of genes required for both Rpg1 and rpg4-mediated wheat stem rust resistance in barley
Creators: name: Solanki, Shyam
name: Richards, Jonathan
name: Ameen, Gazala
name: Wang, Xue
name: Khan, Atiya
name: Ali, Harris
name: Stangel, Alex
name: Tamang, Prabin
name: Gross, Thomas
name: Gross, Patrick
name: Fetch, Thomas
name: Brueggeman, Robert
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Figure S1. Linkage map of Hv584/rpr9 F2:6 recombinant inbred line population spanning the seven barley chromosomes containing 563 polymorphic non-redundant SNP markers, created using MapDisto software. (PDF 158 kb)
Equilibrium configurations of defective crystals
Creators: name: Fonseca, Irene
name: Parry, Gareth
Publisher: name: Carnegie Mellon University
Year: 1991
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "A special class of defect preserving deformations in solid crystals, the neutral deformations, is studied. Using the theory of compensated compactness it is shown that neutral deformations are closed with respect to weak convergence and a variational analysis of such states is undertaken. In particular, by means of the div-curl lemma minimizing sequences and their respective Young's probability measures are characterized."
Sensitivity analysis of 2D photonic band gaps of any rod shape and conductivity using a very fast conical integral equation method
Creators: name: Goray, Leonid
name: Schmidt, Gunther
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Diffraction
subject: multilayer periodic structure
subject: integral method
subject: oblique incidence
subject: photonic crystal grating
subject: S-matrix method
subject: 02.60.Nm
subject: 02.70.Pt
subject: 71.36.+c

description: The conical boundary integral equation method has been proposedto calculate the sensitive optical response of 2D photonic band gaps (PBGs),including dielectric, absorbing, and high-conductive rods of various shapes working in any wavelength range. It is possible to determine the diffracted field by computing the scattering matrices separately for any gratingboundary profile. The computation of the matrices is based on the solution of a 2 x 2system of singular integral equations at each interface between two different materials. The advantage of our integral formulation is that the discretization of the integral equations system and the factorization of the discrete matrices, which takes the major computing time, are carried out only oncefor a boundary. It turned out that a small number of collocation points per boundary combined with a high convergence rate can provide adequate description of the dependence on diffracted energy of very different PBGs illuminated at arbitrary incident and polarization angles. Thenumerical results presented describe the significant impact of rod shape on diffraction in PBGs supporting polariton-plasmon excitation, particularly in the vicinity of resonances and at high fillingratios. The diffracted energy response calculated vs. array cell geometry parameters was found to vary from a few percent up to a few hundred percent. The influence of other types of anomalies (i.e. waveguide anomalies, cavity modes, Fabry-Perot and Bragg resonances, Rayleigh orders, etc), conductivity, and polarization states on the optical response has been demonstrated.
Two-phase Thermodynamic Model for Computing Entropies of Liquids Reanalyzed
Creators: name: Sun, Tao
name: Xian, Jiawei
name: Zhang, Huai
name: Zhang, Zhigang
name: Zhang, Yigang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The two-phase thermodynamic (2PT) model {[}J. Chem. Phys., \textbf{119}, 11792 (2003){]} provides a promising paradigm to efficiently determine the ionic entropies of liquids from molecular dynamics (MD). In this model, the vibrational density of states (VDoS) of a liquid is decomposed into a diffusive gas-like component and a vibrational solid-like component. By treating the diffusive component as hard sphere (HS) gas and the vibrational component as harmonic oscillators, the ionic entropy of the liquid is determined. Here we examine three issues crucial for practical implementations of the 2PT model: (i) the mismatch between the VDoS of the liquid system and that of the HS gas; (ii) the excess entropy of the HS gas; (iii) the partition of the gas-like and solid-like components. Some of these issues have not been addressed before, yet they profoundly change the entropy predicted from the model. Based on these findings, a revised 2PT formalism is proposed and successfully tested in systems with Lennard-Jones potentials as well as many-atom potentials of liquid metals. Aside from being capable of performing quick entropy estimations for a wide range of systems, the formalism also supports fine-tuning to accurately determine entropies at specific thermal states.
Multistability of twisted states in non-locally coupled Kuramoto-type models
Creators: name: Girnyk, Taras
name: Hasler, Martin
name: Maistrenko, Yuriy
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Chaos
subject: Nonlinear dynamical systems
subject: Numerical analysis
subject: Oscillators
subject: 37C75
subject: 05.45.Xt
subject: 02.60.-x

description: A ring of N identical phase oscillators with interactions between L-nearest neighbors is considered, where L ranges from 1 (local coupling) to N/2 (global coupling). The coupling function is a simple sinusoid, as in the Kuramoto model, but with a minus sign which has a profound influence on its behavior. Without limitation of the generality the frequency of the free-running oscillators can be set to zero. The resulting system is of gradient type and therefore all its solutions converge to an equilibrium point. All so-called q-twisted states, where the phase difference between neighboring oscillators on the ring is 2 pi q/N are equilibrium points, where q is an integer. Their stability in the limit N -> inf. is discussed along the line of1. In addition we prove that when a twisted state is asymptotically stable for the infinite system, it is also asymptotically stable for sufficiently large N. Note that for smaller N, the same q-twisted states may become unstable and other q-twisted states may become stable. Finally, the existence of additional equilibrium states, called here multi-twisted states, is shown by numerical simulation. The phase difference between neighboring oscillators is approximately 2 pi q/N in one sector of the ring, -2 pi q/N in another sector, and it has intermediate values between the two sectors. Our numerical investigation suggests that the number of different stable multi-twisted states grows exponentially as N -> inf. It is possible to interpret the equilibrium points of the coupled phase oscillator network as trajectories of a discrete-time translational dynamical system where the space-variable (position on the ring) plays the role of time. The q-twisted states are then fixed points and the multi-twisted states are periodic solutions of period N that are close to a heteroclinic cycle. Due to the apparently exponentially fast growing number of such stable periodic solutions, the system shows spatial chaos as N -> 1.
title: Corpus : FRANÇAIS DES ANNÉES 80 , Transcription : FJ 8 -CLAN
Creators: name: Groupe De Recherche Du CREDIF
name: Mochet, Marie-Anne
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Français
subject: fra

description: Interactions construites
description: Interaction en face à face sur un thème imposé
description: En orthographe adaptee, Minutée
description: La convention de transcription est accessible dans CLAPI
description: Accès dans CLAPI aux 75 descripteurs documentant le corpus
description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Critical dynamics of diluted relaxational models coupled to a conserved density (diluted model C)
Creators: name: Dudka, M.
name: Folk, R.
name: Holovatch, Yu.
name: Moser, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the influence of quenched disorder on the relaxational critical dynamics of a system characterized by a non-conserved order parameter coupled to the diffusive dynamics of a conserved scalar density (model C). Disorder leads to model A critical dynamics in the asymptotics, however it is the effective critical behavior which is often observed in experiments and in computer simulations and this is described by the full set of dynamical equations of diluted model C. Indeed different scenarios of effective critical behavior are predicted.
description: 4 pages, 5 figures
Normative Ratings of Event Experience for Autistic Individuals
Creators: name: McRae, Ken
name: Stevenson, Ryan
name: Hannah, Kara
name: Rivet, Ella
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: autism
subject: autism spectrum disorder
subject: autistic traits
subject: event cognition
subject: event knowledge
subject: events
subject: normative ratings
subject: norms
subject: social communication
subject: social events

description: We aim to collect a large set of normative ratings to evaluate autistic individuals’ experiences of everyday events. Autistic adults aged 18-30 will be asked to provide a set of ratings on 14 dimensions for a variety of events to capture their experiences. This preregistration includes a PDF file containing the methods and analyses.
The modified XXZ Heisenberg chain, conformal invariance, surface exponents of c<1 systems, and hidden symmetries of the finite chains
Creators: name: Grimm, Uwe
name: Rittenberg, Vladimir
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The spin-1/2 XXZ Heisenberg chain with two types of boundary terms is considered. For the first type, the Hamiltonian is hermitian but not for the second type which includes the U_{q}[SU(2)] symmetric case. It is shown that for a certain `tuning' between the anisotropy angle and the boundary terms the spectra present unexpected degeneracies. These degeneracies are related to the structure of the irreducible representations of the Virasoro algebras for c<1.
description: 9 pages; an old preprint from the pre-arXiv (but not pre-LaTeX) era, published version not (yet?) electronically accessible
Persistence of rogue waves in extended nonlinear Schrödinger equations: Integrable Sasa--Satsuma case
Creators: name: Bandelow, Uwe
name: Akhmediev, Nail
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Generalized nonlinear Schrödinger equations
subject: Sasa-Satsuma equation
subject: solitons
subject: rogue waves
subject: 35Q55
subject: 35Q60
subject: 37K40
subject: 42.65.Tg
subject: 05.45.Yv
subject: 42.81.Dp

description: We present the lowest order rogue wave solution of the Sasa-Satsuma equation (SSE) which is one of the integrable extensions of the nonlinear Schrödinger equation (NLSE). In contrast to the Peregrine solution of the NLSE, it is significantly more involved and contains polynomials of fourth order rather than second order in the corresponding expressions. The correct limiting case of Peregrine solution appears when the extension parameter of the SSE is reduced to zero.
Spatial ``rocking'' for improving the spatial quality of the beam of broad area semiconductor lasers
Creators: name: Radziunas, Mindaugas
name: Staliunas, Kestutis
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: broad area semiconductor laser
subject: traveling wave model
subject: off-axis optical injection
subject: stabilization
subject: focusing
subject: rocking
subject: 78A60
subject: 35B36
subject: 37M05
subject: 78A45
subject: 42.55.Px
subject: 42.65.Pc
subject: 42.60.Jf

description: The spatial ``rocking'' is a dynamical effect converting a phase-invariant oscillatory system into a phase-bistable one, where the average phase of the system locks to one of two values differing by $pi$. We demonstrate theoretically the spatial rocking in experimentally accessible and practically relevant systems -- the broad area semiconductor lasers. By numerical integration of the laser model equations we show the phase bistability of the optical fields and explore the bistability area in parameter space. We also predict the spatial patterns, such as phase domain walls and phase solitons, which are characteristic for the phase-bistable spatially extended pattern forming systems.
Channel processes and products in subaerial and submarine environments across the Gulf of Mexico
Creators: name: Swartz, John Marshall
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Sedimentology
Geomorphology
Marine geology

description: This dissertation characterizes the geomorphology and associated stratigraphy of channel systems across the northwestern Gulf of Mexico. I focus primarily on fluvial processes and products found within the coastal zone and alluvial plain, and also on a submarine channel network strongly influenced by fluvial behavior. I first use high-resolution bathymetry data combined with academic and industry geophysical data to detail the evolution of a linked shelf-edge delta / slope fan formed by the ancestral Rio Grande in the western Gulf of Mexico. The most recent period of deposition and margin growth was associated with the evolution of a submarine channel network, but one where the uppermost, high-gradient channel segments were strongly depositional and the lower, low-gradient channels with evidence of increasing sediment bypass. Chapter three then examines the controls on drainage network formation within a terrestrial environment, namely the coastal plain from the Rio Grande to the Mississippi delta. I show that floodplain channel network position and geometry is initially controlled by the position of alluvial ridges formed by avulsion of the largest coastal rivers. This provides a new and unique model of how drainage basins evolve in depositional environments. In chapter four I study the morphodynamics of the lower Rio Grande over the last hundred years and illustrate an intermittent river that does not adjust either its channel cross sectional geometry or lateral mobility as it approaches the coast, in contrast to more commonly studied perennial rivers. Finally, the fifth chapter seeks to capture the adjustment of a coastal river to sea-level rise as captured by offshore stratigraphy formed during the Holocene transgression. I provide evidence that the river channel did not simply flood back as commonly proposed but rather shifted from lateral migration to vertical aggradation as it continued to feed delta growth farther downstream. This dissertation provides a variety of studies spanning traditional domains and disciplines and brings together archival historical data, field surveys, and modern aerial and marine geophysical techniques. This work helps illustrate the complex dynamics of depositional environments and provides future research directions for fluvial sedimentology and landscape evolution.
Coexistence of Regular Undamped Nuclear Dynamics with Intrinsic Chaoticity
Creators: name: Bauer, Wolfgang
name: Zelevinsky, Vladimir
name: Schuck, Peter
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the conditions under which the nucleons inside a deformed nucleus can undergo chaotic motion. To do this we perform self-consistent calculations in semiclassical approximation utilizing a multipole-multipole interaction of the Bohr-Mottelson type for quadrupole and octupole deformations. For the case of harmonic and non-harmonic static potentials, we find that both multipole deformations lead to regular motion of the collective coordinate, the multipole moment of deformation. However, despite this regular collective motion, we observe chaotic single particle dynamics.
description: 12 pages LaTeX + 2 figures (postscript, available from 1st author)
The Spectral Energy Distribution of Powerful Starburst Galaxies I: Modelling the Radio Continuum
Creators: name: Galvin, T J
name: Seymour, N
name: Marvil, J
name: Filipovic, M D
name: Tothill, N F H
name: McDermid, R M
name: Hurley-Walker, N
name: Hancock, P J
name: Callingham, J R
name: Cook, R H
name: Norris, R P
name: Bell, M E
name: Dwarakanath, K S
name: For, B
name: Gaensler, B M
name: Hindson, L
name: Johnston-Hollitt, M
name: Kapińska, A D
name: Lenc, E
name: McKinley, B
name: Morgan, J
name: Offringa, A R
name: Procopio, P
name: Staveley-Smith, L
name: Wayth, R B
name: Wu, C
name: Zheng, Q
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have acquired radio continuum data between 70\,MHz and 48\,GHz for a sample of 19 southern starburst galaxies at moderate redshifts ($0.067 < z < 0.227$) with the aim of separating synchrotron and free-free emission components. Using a Bayesian framework we find the radio continuum is rarely characterised well by a single power law, instead often exhibiting low frequency turnovers below 500\,MHz, steepening at mid-to-high frequencies, and a flattening at high frequencies where free-free emission begins to dominate over the synchrotron emission. These higher order curvature components may be attributed to free-free absorption across multiple regions of star formation with varying optical depths. The decomposed synchrotron and free-free emission components in our sample of galaxies form strong correlations with the total-infrared bolometric luminosities. Finally, we find that without accounting for free-free absorption with turnovers between 90 to 500\,MHz the radio-continuum at low frequency ($ν< 200$\,MHz) could be overestimated by upwards of a factor of twelve if a simple power law extrapolation is used from higher frequencies. The mean synchrotron spectral index of our sample is constrained to be $α=-1.06$, which is steeper then the canonical value of $-0.8$ for normal galaxies. We suggest this may be caused by an intrinsically steeper cosmic ray distribution.
X-Ray Variability of NLS1s and BLS1s
Creators: name: Edelson, Rick
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Evenly-sampled hard X-ray monitoring was obtained with RXTE for one NLS1 (Akn 564) and four BLS1s. The variability amplitude of the NLS1 was no larger than the mean of the BLS1s, and the NLS1 showed stronger variability in the harder portion of the RXTE band, while the BLS1s were more strongly variable in the relatively soft part of the band. This contribution discusses possible explanations for these surprising results, including possible calibration errors or systematic differences between long and short time scale variability in NLS1s and BLS1s.
description: Contributed talk presented at the Joint MPE,AIP,ESO workshop on NLS1s, Bad Honnef, Dec. 1999, to appear in New Astronomy Reviews; also available at http://wave.xray.mpe.mpg.de/conferences/nls1-workshop
Nonuniversal transitions to synchrony in the Sakaguchi--Kuramoto model
Creators: name: Omel'chenko, Oleh
name: Wolfrum, Matthias
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Coupled phase oscillators
subject: synchronization transition
subject: Sakaguchi-Kuramoto model
subject: 34C15
subject: 37N20
subject: 37N25
subject: 05.45.Xt
subject: 89.75.Kd

description: We investigate the transition to synchrony in a system of phase oscillators that are globally coupled with a phase lag (Sakaguchi-Kuramoto model). We show that for certain unimodal frequency distributions there appear unusual types of synchronization transitions, where synchrony can decay with increasing coupling, incoherence can regain stability for increasing coupling, or multistability between partially synchronized states and/or the incoherent state can appear. Our method is a bifurcation analysis based on a frequency dependent version of the Ott-Antonsen method and allows for a universal description of possible synchronization transition scenarios for any given distribution of natural frequencies.
On balance laws for mixture theories of disperse vapor bubbles in liquid with phase change
Creators: name: Dreyer, Wolfgang
name: Hantke, Maren
name: Warnecke, Gerald
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: averaging methods
subject: conservation laws
subject: phase change
subject: bubbles
subject: phase mixtures
subject: 35Q53
subject: 35G25
subject: 76E15

description: We study averaging methods for the derivation of mixture equations for disperse vapor bubbles in liquids. The carrier liquid is modeled as a continuum, whereas simplified assumptions are made for the disperse bubble phase. An approach due to Petrov and Voinov is extended to derive mixture equations for the case that there is a phase transition between the carrier liquid and the vapor bubbles in water. We end up with a system of balance laws for a multi-phase mixture, which is completely in divergence form. Additional non-differential source terms describe the exchange of mass, momentum and energy between the phases. The sources depend explicitly on evolution laws for the total mass, the radius and the temperature of single bubbles. These evolution laws are derived in a prior article and are used to close the system. Finally numerical examples are presented.
An Operational Calculus Generalization of Ramanujan's Master Theorem
Creators: name: Bradshaw, Zachary P.
name: Vignat, Christophe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 44A45 (Primary) 33F10 (Secondary)

description: We give a formal extension of Ramanujan's master theorem using operational methods. The resulting identity transforms the computation of a product of integrals on the half-line to the computation of a Laplace transform. Since the identity is purely formal, we show consistency of this operational approach with various standard calculus results, followed by several examples to illustrate the power of the extension. We then briefly discuss the connection between Ramanujan's master theorem and identities of Hardy and Carr before extending the latter identities in the same way we extended Ramanujan's. Finally, we generalize our results, producing additional interesting identities as a corollary.
description: 20 pages, 1 figure
Self-propelled running droplets on solid substrates driven by chemical reactions
Creators: name: John, K.
name: Baer, M.
name: Thiele, U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We study chemically driven running droplets on a partially wetting solid substrate by means of coupled evolution equations for the thickness profile of the droplets and the density profile of an adsorbate layer. Two models are introduced corresponding to two qualitatively different types of experiments described in the literature. In both cases an adsorption or desorption reaction underneath the droplets induces a wettability gradient on the substrate and provides the driving force for droplet motion. The difference lies in the behavior of the substrate behind the droplet. In case I the substrate is irreversibly changed whereas in case II it recovers allowing for a periodic droplet movement (as long as the overall system stays far away from equilibrium). Both models allow for a non-saturated and a saturated regime of droplet movement depending on the ratio of the viscous and reactive time scales. In contrast to model I, model II allows for sitting drops at high reaction rate and zero diffusion along the substrate. The transition from running to sitting drops in model II occurs via a super- or subcritical drift-pitchfork bifurcation and may be strongly hysteretic implying a coexistence region of running and sitting drops.
description: 40 pages, 16 figures
A coupling of discrete and continuous optimization to solve kinodynamic motion planning problems
Creators: name: Landry, Chantal
name: Welz, Wolfgang
name: Gerdts, Matthias
Publisher: name: Weierstrass Institute
Year: 2013
Subjects: subject: trajectory planning
subject: optimal control problem
subject: collision avoidance
subject: graph search algorithm
subject: initialization
subject: robotics
subject: 49J15
subject: 49M25
subject: 49N90
subject: 70E60
subject: 90C30
subject: 90C35

description: A new approach to find the fastest trajectory of a robot avoiding obstacles, is presented. This optimal trajectory is the solution of an optimal control problem with kinematic and dynamics constraints. The approach involves a direct method based on the time discretization of the control variable. We mainly focus on the computation of a good initial trajectory. Our method combines discrete and continuous optimization concepts. First, a graph search algorithm is used to determine a list of via points. Then, an optimal control problem of small size is defined to find the fastest trajectory that passes through the vicinity of the via points. The resulting solution is the initial trajectory. Our approach is applied to a single body mobile robot. The numerical results show the quality of the initial trajectory and its low computational cost.
Understanding precipitation variability over Africa : observational analysis and regional climate model simulations
Creators: name: Liu, Weiran
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: MCS
Diurnal cycle of precipitation
Sahel rainfall
Low-level jet
West African monsoon
Seasonality of precipitation
West African westerly jet
Saharan thermal low
East African precipitation
Short rains
Kenya precipitation
Indian Ocean Dipole
Interannual variability
Tropical Africa rainfall
SST forcing
Greater Horn of Africa

description: Understanding precipitation variability over Africa is important because this region experiences rainfall events that influence agriculture and economic infrastructure, and threaten lives regularly. This study aims to advance our understanding of African precipitation across different timescales, from diurnal cycle to interannual variations, using observations, reanalyses, and regional climate model simulations. First, we evaluate the role of MCSs in the total rainfall distribution as a function of season from a climatological perspective (1998-2014) over sub-Saharan northern Africa and examine how the diurnal cycle of rainfall changes with season. The percentages of the full TRMM precipitation delivered by MCSs have meridional structures in spring, fall and winter, while the percentages are homogenous in summer (>80%). The diurnal peaks are classified into three categories: single afternoon peak, continuous afternoon peak, and nocturnal peak. The continuous afternoon peak combines rainfall from two system types –one locally-generated and one propagating. The seasonality of the diurnal cycle is related to the seasonality of MCS lifetimes, and propagation speeds and directions. Second, a low-level jet, the West African westerly jet, is investigated over the West African coast. In the western Sahel (0°-10°W, 8°-18°N), the moisture flux associated with the jet is stronger than that associated with the southerly West African monsoon flow from July 5 to August 20 (45 days). The moisture budget analysis reveals that the seasonal evolution of the rainfall in this analysis region is associated with zonal moisture convergence related to changes of the jet. Finally, three sub-regions of the Indian Ocean in which SSTs significantly influence the equatorial East African short rains on interannual timescales are identified, and the physical processes of this influence are studied using regional climate model simulations. SSTAs in the western Indian Ocean exert a stronger influence on the short rains than central and eastern Indian Ocean SSTAs both in terms of the coverage of significantly-changed precipitation and the magnitude of the precipitation response. The mechanisms of this influence are diagnosed using atmospheric moisture budget and moist static energy analyses, with reference to Kelvin and Rossby wave generation as in the Gill model, but in the presence of complicated topography and nonzero background flows.
title: Corpus : FRANÇAIS DES ANNÉES 80 , Transcription : HA 7 -CLAN
Creators: name: Groupe De Recherche Du CREDIF
name: Mochet, Marie-Anne
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Français
subject: fra

description: Interactions construites
description: Interaction en face à face sur un thème imposé
description: En orthographe adaptee
description: La convention de transcription est accessible dans CLAPI
description: Accès dans CLAPI aux 75 descripteurs documentant le corpus
description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Option pricing in affine generalized Merton models
Creators: name: Bayer, Christian
name: Schoenmakers, John G. M.
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Affine processes
subject: Merton jump-model
subject: approximate affine characteristic function
subject: 91G60
subject: 65C30

description: In this article we consider affine generalizations of the Merton jump diffusion model Merton (1976) and the respective pricing of European options. On the one hand, the Brownian motion part in the Merton model may be generalized to a log-Heston model, and on the other hand, the jump part may be generalized to an affine process with possibly state dependent jumps. While the characteristic function of the log-Heston component is known in closed form, the characteristic function of the second component may be unknown explicitly. For the latter component we propose an approximation procedure based on the method introduced in Belomestny, Kampen, Schoenmakers (2009). We conclude with some numerical examples.
An eccentric binary black hole inspiral-merger-ringdown gravitational waveform model from numerical relativity and post-Newtonian theory
Creators: name: Hinder, Ian
name: Kidder, Lawrence E.
name: Pfeiffer, Harald P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a prescription for computing gravitational waveforms for the inspiral, merger and ringdown of non-spinning eccentric binary black hole systems. The inspiral waveform is computed using the post-Newtonian expansion and the merger waveform is computed by interpolating a small number of quasi-circular NR waveforms. The use of circular merger waveforms is possible because eccentric binaries circularize in the last few cycles before the merger, which we demonstrate up to mass ratio $q = m_1/m_2 = 3$. The complete model is calibrated to 23 numerical relativity (NR) simulations starting ~20 cycles before the merger with eccentricities $e_\text{ref} \le 0.08$ and mass ratios $q \le 3$, where $e_\text{ref}$ is the eccentricity ~7 cycles before the merger. The NR waveforms are long enough that they start above 30 Hz (10 Hz) for BBH systems with total mass $M \ge 80 M_\odot$ ($230 M_\odot$). We find that, for the sensitivity of advanced LIGO at the time of its first observing run, the eccentric model has a faithfulness with NR of over 97% for systems with total mass $M \ge 85 M_\odot$ across the parameter space ($e_\text{ref} \le 0.08, q \le 3$). For systems with total mass $M \ge 70 M_\odot$, the faithfulness is over 97% for $e_\text{ref} \lesssim 0.05$ and $q \le 3$. The NR waveforms and the Mathematica code for the model are publicly available.
Practical solution to the Monte Carlo sign problem: Realistic calculations of 54Fe
Creators: name: Alhassid, Y.
name: Dean, D. J.
name: Koonin, S. E.
name: Lang, G.
name: Ormand, W. E.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a practical solution to the "sign problem" in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for 54Fe in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller beta^+ strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.
description: 11 pages + 2 figures (not included)
Stratigraphic architecture, depositional systems, and lithofacies of the Mississippian upper Barnett Two-Finger Sand, Midland Basin, Texas
Creators: name: Mauck, Justin Vaughn
name: 0000-0002-1388-121X
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Barnett
Mississippian
Carbonate ramp
Deepwater
Submarine fan
Midland Basin

description: The upper Barnett Two Finger Sand in West Texas forms oil and gas reservoirs that produce from natural fractures and low-permeability intraparticle matrix nano- to micropores. The section contains two mixed silt- to very fine sand-sized siliciclastic‒carbonate units that are composed of relatively thin 0.5 mm to 1 m hybrid/cogenetic event beds that amalgamate to form a deepwater submarine fan system in the Mississippian Tobosa Basin. Siliceous mudstones occur between these coarser grained units. The sediment sources for the fan lobes were from the northern and eastern margins (inner ramp) of the basin. The depositional setting, based on elevated TOC (up to 3.1%), lack of wave-related hydrodynamic features, and deepwater biota (cephalopods, Archeodiscus sp. foraminifera), is interpreted as having been below storm-wave base in a generally dysaerobic bottom-water setting with brief periods of oxygenation. Most of the TOC is Type III, but minor amount of Type II is present. Calculated Ro values average 1.2%, situating it in the late oil to early gas window. Core-plug porosity ranges between 0.5 to 4.4% and all permeability analyses were less than 0.001 md. Pore types include intraparticle fluid-inclusion pores and clay-platelet mineral pores. Some microvugs (<1 µm to 10 µm), that may be related to dissolution are observed. Rare organic-matter pores are present. Based on decline curves from producing wells and shut-in-pressure tests performed during the development of the Moonlight Field, it was concluded that the permeability network in the wells are natural fractures. After a few years of production, however, the decline curves suggest that some production is from the matrix. The concepts developed concerning the depositional setting and sediment-source areas and directions may aid in extending the development of the Two Finger Sand.
Quadrature Sampling of Parametric Models with Bi-fidelity Boosting
Creators: name: Cheng, Nuojin
name: Malik, Osman Asif
name: Xu, Yiming
name: Becker, Stephen
name: Doostan, Alireza
name: Narayan, Akil
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Least squares regression is a ubiquitous tool for building emulators (a.k.a. surrogate models) of problems across science and engineering for purposes such as design space exploration and uncertainty quantification. When the regression data are generated using an experimental design process (e.g., a quadrature grid) involving computationally expensive models, or when the data size is large, sketching techniques have shown promise to reduce the cost of the construction of the regression model while ensuring accuracy comparable to that of the full data. However, random sketching strategies, such as those based on leverage scores, lead to regression errors that are random and may exhibit large variability. To mitigate this issue, we present a novel boosting approach that leverages cheaper, lower-fidelity data of the problem at hand to identify the best sketch among a set of candidate sketches. This in turn specifies the sketch of the intended high-fidelity model and the associated data. We provide theoretical analyses of this bi-fidelity boosting (BFB) approach and discuss the conditions the low- and high-fidelity data must satisfy for a successful boosting. In doing so, we derive a bound on the residual norm of the BFB sketched solution relating it to its ideal, but computationally expensive, high-fidelity boosted counterpart. Empirical results on both manufactured and PDE data corroborate the theoretical analyses and illustrate the efficacy of the BFB solution in reducing the regression error, as compared to the non-boosted solution.
description: 36 pages, 9 figures
title: Corpus : FRANÇAIS DES ANNÉES 80 , Transcription : HJ 4 -CLAN
Creators: name: Groupe De Recherche Du CREDIF
name: Mochet, Marie-Anne
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Français
subject: fra

description: Interactions construites
description: Interaction en face à face sur un thème imposé
description: En orthographe adaptee, Minutée
description: La convention de transcription est accessible dans CLAPI
description: Accès dans CLAPI aux 75 descripteurs documentant le corpus
description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Energy functionals depending on elastic strain and chemical composition
Creators: name: Fonseca, Irene
name: Kinderlehrer, David
name: Pedregal
Publisher: name: Carnegie Mellon University
Year: 1993
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "In this paper we deal with energy functionals depending on elastic strain and chemical composition and we obtain lower semicontinuity results, existence theorems and relaxation in the spaces H[superscript 1,p]([omega]; R[superscript n]) x L[superscript q]([omega]; R[superscript d]) with respect to weak convergence. Our proofs use parametrized measures associated with weakly converging sequences."