cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Future supernova probes of quintessence
Creators: name: Ng, S. C. C.
name: Wiltshire, D. L.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the potential of a future supernovae data set, as might be obtained by the proposed SNAP satellite, to discriminate between two possible explanations for the observed dimming of the high redshift type IA supernovae, namely either (i) a cosmological evolution for which the expansion of the universe has been accelerating for a substantial range of redshifts $z\goesas1$; or (ii) an unexpected supernova luminosity evolution over such a redshift range. By evaluating Bayes factors we show that within the context of spatially flat model universes with a dark energy the future SNAP data set should be able to discriminate these two possibilities. Our calculations assume particular cosmological models with a quintessence field in the form of a dynamical pseudo Nambu--Goldstone boson (PNGB), and a simple empirical model of the evolution of peak luminosities of the supernovae sources which has been recently discussed in the literature. We also show that the fiducial SNAP data set, simulated with the assumption of no source evolution, is able to discriminate the PNGB model from a number of other spatially flat quintessence models which have been widely studied in the literature, namely those with inverse power--law, simple exponential and double--exponential potentials.
description: 13 pages, RevTeX, 7 figures, epsf. v2 Revised: statistical tests extended and refined, but conclusions not significantly changed; references and new figures added. v3 A few minor typos corrected, as per published paper
Quantum noise limited interferometry
Creators: name: Gray, Malcolm B
Publisher: name: The Australian National University
Year: 1995
Subjects: subject: Interferometers Noise
subject: Laser interferometers Noise

description: A small bench top interferometer, built to study modulation interferometry is described. A number of different interferometer configurations are trialed, all using a continuos wave, Nd:YAG laser. The ability of these configurations to operate at the shot noise limit is documented and technical noise sources that detract from this limit are investigated. The frequency and intensity noise properties of the Nd:YAG laser, used throughout this work, are documented. It is shown that the free running laser has considerable frequency noise structure from DC to approximately 100kHz. The effects of this frequency noise on interferometry are documented and means of overcoming these problems discussed. The free running laser is shown to exhibit strong intensity noise structure associated with the resonant relaxation oscillation present in the lasing crystal. The resonant relaxation oscillation is modelled by a noise-driven second order system. This description is used to design an intensity stabilisation servo to suppress the free running laser noise. The performance of the stabilisation system is documented and its ability to suppress laser intensity noise by up to 35dB across a wide bandwidth is demonstrated. A simple scalar theory, to describe modulation interferometry is developed. All necessary non-ideal parameters are included and accurate predictions of practical interferometer sensitivity are made. The theory is used to analyse the performance of all interferometers tested here. Bench top interferometer experiments are performed for direct detection, internal modulation, external modulation and power recycling interferometer configurations. The shot noise sensitivity of each configuration is measured and excellent agreement with theory is achieved. An application for the direct detection interferometer is demonstrated; noninvasive shot noise limited RF electric field measurements. Several circuit boards are mapped using this device and the results presented. Non-stationary shot noise in internal modulation interferometers is investigated. Using a large modulation depth and high fringe visibility interferometer, approximately 4.8dB of noise variation dependent on the demodulation phase is achieved. Non-stationary shot noise is shown to cause excess noise (1.7dB) in the signal quadrature, leading to shot noise limited sensitivity of √ (3/2) worse than direct detection. A complex modulation-demodulation system is then implemented using both the first and third harmonic. The addition of the third harmonic is shown to introduce correlated shot noise that can be used to reduce the excess 1.7dB nonstationary shot noise occurring in the signal quadrature.
Motion of hypersurfaces by curvature
Creators: name: Langford, Mat
Publisher: name: The Australian National University
Year: 2014
Subjects: curvature flows
convexity estimates
cylindrical estimates
non-collapsing

description: It is well-known that solutions of such flows necessarily suffer finite time singularities. On the other hand, under various natural conditions, singularities are characterised by a curvature blow-up. Our first main area of study concerns the asymptotic behaviour of the curvature at a singularity. We first prove a quantitative convexity estimate for positive solutions (that is, solutions moving with inward normal speed everywhere positive) under one of the following additional assumptions: either the evolving hypersurfaces are of dimension two, or the flow speed is a convex function of the curvature. Roughly speaking, the convexity estimate states that, for positive solutions, the normalised Weingarten curvature operator is asymptotically non-negative at a singularity. We then prove a family of cylindrical estimates for flows by convex speed functions. Roughly speaking, these estimates state that, for $(m+1)$-positive solutions (that is, solutions with $(m+1)$-positive Weing! arten curvature), the Weingarten curvature is asymptotically $m$-cylindrical at a singularity unless it becomes $m$-positive. The convexity and cylindrical estimates yield a detailed description of the possible singularities which may form under surface flows and flows by convex speeds. Moreover, they are uniform across the class of solutions with given dimension, flow speed, and initial volume, diameter and curvature hull, which should make them useful for applications such as the development of flows with surgeries. Our second main area of study concerns the development, in the fully non-linear setting, of the recently discovered {\it non-collapsing} phenomena for the mean curvature flow; namely, we prove that embedded solutions of flows by concave speeds are {\it interior non-collapsing}, whilst embedded solutions of flows by convex or inverse-concave speeds are {\it exterior non-collapsing}. The non-collapsing results complement the above curvature estimates by ruling out certain types of asymptotic behaviour which the curvature estimates do not. (This is mainly due to the non-local nature of the non-collapsing estimates.) As a particular application, we show how non-collapsing gives rise to a particularly efficient proof of the Andrews--Huisken theorem on the convergence of convex hypersurfaces to {\it round points} under such flows.
Robo-Taxi service fleet sizing: assessing the impact of user trust and willingness-to-use
Creators: name: Vosooghi, Reza
name: Kamel, Joseph
name: Puchinger, Jakob
name: Leblond, Vincent
name: Jankovic, Marija
Publisher: name: arXiv
Year: 2019
Subjects: subject: Multiagent Systems (cs.MA)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The first commercial fleets of Robo-Taxis will be on the road soon. Today important efforts are made to anticipate future Robo-Taxi services. Fleet size is one of the key parameters considered in the planning phase of service design and configuration. Based on multi-agent approaches, the fleet size can be explored using dynamic demand response simulations. Time and cost are the most common variables considered in such simulation approaches. However, personal taste variation can affect the demand and consequently the required fleet size. In this paper, we explore the impact of user trust and willingness-to-use on the Robo-Taxi fleet size. This research is based upon simulating the transportation system of the Rouen-Normandie metropolitan area in France using MATSim, a multi-agent activity-based simulator. A local survey is made in order to explore the variation of user trust and their willingness-to-use future Robo-Taxis according to the sociodemographic attributes. Integrating survey data in the model shows the significant importance of traveler trust and willingness-to-use varying the Robo-Taxi use and the required fleet size.
description: Transportation, Springer Verlag, 2019
Intranstylum macrostylum
Creators: name: Mayén-Estrada, Rosaura
name: Pinto Utz, Laura R.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Intranstylum
Intranstylum macrostylum

description: Intranstylum macrostylum (d´Udekem, 1864)
 Known Distribution. Belgium.
 Hosts. Asellus (Asellus) aquaticus (cited as Asellus aquaticus).
 References. Kahl 1935; Fernandez-Leborans & Tato-Porto 2000; Jankowski 2007.
description: Published as part of Mayén-Estrada, Rosaura & Pinto Utz, Laura R., 2018, A checklist of species of Vorticellidae (Ciliophora: Peritrichia) epibionts of crustaceans, pp. 301-328 in Zootaxa 4500 (3) on page 306, DOI: 10.11646/zootaxa.4500.3.1, http://zenodo.org/record/5297657
Additional file 1: of An assessment of preserved DNA in decomposed biological materials by using forensic DNA profiling
Creators: name: Thakar, Mukesh
name: Bhawana Joshi
name: Shrivastava, Pankaj
name: Anupuma Raina
name: Lalwani, Sanjeev
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology

description: Table S1 Quantification data of brain samples using RT-PCR. Table S2 Quantification data of teeth samples using RT-PCR. Table S3 Quantification data of prostate/uterus samples using RT-PCR. (DOCX 22 kb)
Intranstylum ovulum Sommer 1951
Creators: name: Mayén-Estrada, Rosaura
name: Pinto Utz, Laura R.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Intranstylum
Intranstylum ovulum

description: Intranstylum ovulum Sommer, 1951
 Known Distribution. Germany.
 Hosts. Asellus (Asellus) aquaticus (cited as Asellus aquaticus); Asellus sp.; Gammarus sp.; gammarids.
 References. Schödel 1986 a, 1987; Stiller 1971; Morado & Small 1995; Jankowski 2007.
description: Published as part of Mayén-Estrada, Rosaura & Pinto Utz, Laura R., 2018, A checklist of species of Vorticellidae (Ciliophora: Peritrichia) epibionts of crustaceans, pp. 301-328 in Zootaxa 4500 (3) on page 306, DOI: 10.11646/zootaxa.4500.3.1, http://zenodo.org/record/5297657
Evidence for "fragile" glass-forming behavior in the relaxation of Coulomb frustrated three-dimensional systems
Creators: name: Grousson, M.
name: Tarjus, G.
name: Viot, P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show by means of a Monte Carlo simulation study that three-dimensional models with long-range frustration display the generic phenomena seen in fragile glassforming liquids. Due to their properties (absence of quenched disorder, physical motivation in terms of structural frustration, and tunable fragility), these systems appear as promising minimal theoretical models for describing the glass transition of supercooled liquids.
description: 4 pages, 4 figures
Remarks on the Theory of Cosmological Perturbation
Creators: name: Lin, Wenbin
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that the power spectrum defined in the Synchronous Gauge can not be directly used to calculate the predictions of cosmological models on the large-scale structure of universe, which should be calculated directly by a suitable gauge-invariant power spectrum or the power spectrum defined in the Newtonian Gauge.
description: 13 pages, 1 figure, minor changes, to be published in Chinese Physics Letters
(Fortsetzung).
Creators: name: Systematische Uebersicht Der Käfer, Welche In Baiern Und Der Nächsten Umgebu
Publisher: name: Acta Albertina Ratisbonensia
Year: 2017

description: ...
description: Acta Albertina Ratisbonensia, Bd. 31 (1877): Correspondenzblatt
Additional file 1: of Is there any association between prostate-specific antigen screening frequency and uptake of active surveillance in men with low or very low risk prostate cancer?
Creators: name: Beckmann, Kerri
name: Kinsella, Netty
name: Olsson, Henrik
name: Lantz, Anna Wallerstedt
name: Nordstrom, Tobias
name: Aly, Markus
name: Adolfsson, Jan
name: Eklund, Martin
name: Hemelrijck, Mieke
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Plant Biology
subject: 60506 Virology

description: Table S1. Sensitivity analyses. Adjusted ORs for different measures of PSA/biopsy history associated with uptake of AS in men with low/very low risk PCa. (DOCX 15 kb)
Intranstylum steini Wrzesniowski 1877
Creators: name: Mayén-Estrada, Rosaura
name: Pinto Utz, Laura R.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Intranstylum
Intranstylum steini

description: Intranstylum steini Wrzesniowski, 1877
 Known Distribution. Germany, Hungary, Poland, and Slovakia.
 Hosts. Asellus (Asellus) aquaticus (cited as Asellus aquaticus); Gammarus fossarum; Gammarus fossarum (cited as Gammarus pulex fossarum); Gammarus pulex; Gammarus pulex pulex; Gammarus roeselii (cited as Gammarus triacanthus, Carinogammarus roeseli and Carinogammarus roeseli var. triacanthus); Asellus sp.; Carinogammarus sp.; Chaetogammarus sp.; Dikerogammarus sp.; Gammarus sp. (cited as Rivulogammarus sp.).
 References. Kahl 1935; Nenninger 1948; Stiller 1941b, 1949 -1950, 1953, 1971; Piezik 1975; Morado & Small 1995; Fernandez-Leborans & Tato-Porto 2000; Obolewski & Piezic 2006; Jankowski 2007.
description: Published as part of Mayén-Estrada, Rosaura & Pinto Utz, Laura R., 2018, A checklist of species of Vorticellidae (Ciliophora: Peritrichia) epibionts of crustaceans, pp. 301-328 in Zootaxa 4500 (3) on page 307, DOI: 10.11646/zootaxa.4500.3.1, http://zenodo.org/record/5297657
Oscillatory null singularity inside realistic spinning black holes
Creators: name: Ori, Amos
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the asymptotic behavior of the curvature scalar $(Riemann)^2$ near the null weak singularity at the inner horizon of a generic spinning black hole, and show that this scalar oscillates infinite number of times while diverging. The dominant parallelly-propagated Riemann components oscillate in a similar manner. This oscillatory behavior, which is in a remarkable contrast to the monotonic mass-inflation singularity in spherical charged black holes, is caused by the dragging of inertial frames due to the black- hole's spin.
description: 10 pages, Latex; This version is almost identical to the one previously published in Phys. Rev. Lett
(Fortsetzung)
Creators: name: Systematische Uebersicht Der Käfer, Welche In Baiern Und Der Nächsten Umgebu
Publisher: name: Acta Albertina Ratisbonensia
Year: 2017

description: ...
description: Acta Albertina Ratisbonensia, Bd. 31 (1877): Correspondenzblatt
title: Kollegen bei der Arbeit. Die Fotografien von Günter Franzkowiak zwischen Schilderung und Portrait
Creators: name: Hofmann-Johnson, Barbara
Publisher: name: ZZF - Centre for Contemporary History: Visual History
Year: 2019

description: Innerhalb des weit gefächerten Feldes der auf sozialdokumentarische Inhalte ausgerichteten Fotografie nimmt der Bereich der Arbeiterfotografie einen umfangreichen, häufig politisch und sozialkritisch motivierten eigenen Bereich ein. Vor allem im Zuge der fortschreitenden Industrialisierung und der Wirtschaftskrise zwischen den beiden Weltkriegen im 20. Jahrhundert entwickelte sich die authentisch von Arbeitern fotografierte Arbeitswelt mit ihren Schilderungen von Produktions- und Arbeitsbedingungen zu einem auch agitatorisch eingesetzten eigenen Bereich der Fotografie. Von der beschreibenden Darstellung bis hin zu über Missstände aufklärenden Gesichtspunkten gehört die Arbeiterfotografie bis heute zu wichtigen bildjournalistischen Inhalten.
Additional file 2: of Mixed methods evaluation of implementation and outcomes in a community-based cancer prevention intervention
Creators: name: King, Emily
name: Moore, Carla
name: Wilson, Hannah
name: Harden, Samantha
name: Davis, Marsha
name: Berg, Alison
Publisher: name: figshare
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Computational Biology

description: Cooking for a Lifetime of Cancer Prevention (C4L) Instructor Interview Guide. Interview guide for semi-structured interviews of C4L program instructors. (PDF 136 kb)
High Star Formation Rates of Low Eddington Ratio Quasars at $z\gtrsim6$
Creators: name: Kim, Yongjung
name: Im, Myungshin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent simulation studies suggest that the supermassive black hole (SMBH) growth in the early universe may precede the prolonged intense star formation within its host galaxy, instead of quasars appearing after the obscured dusty star formation phase. If so, high-redshift quasars with low Eddington ratios ($λ_{\rm Edd}$) would be found in actively star-forming hosts with a star formation rate (SFR) of $>100~M_{\odot}$ yr$^{-1}$. We present the sub-mm observations of IMS J2204+0112, a faint quasar with a quasar bolometric luminosity of $L_{\rm bol}=4.2\times10^{12}~L_{\odot}$ and a low $λ_{\rm Edd}$ of only 0.1 at $z\sim6$, carried out with the Atacama Large Millimeter/submillimeter Array (ALMA). From its sub-mm fluxes, we measure the rest-frame far-infrared (FIR) luminosity of $L_{\rm FIR}=(3$--$4)\times10^{12}~L_{\odot}$. Interestingly, the derived host galaxy's SFR is $\sim500$--$700~M_{\odot}$ yr$^{-1}$, an order of magnitude higher than those of the $L_{\rm bol}$-matched $z\gtrsim6$ quasars with high $λ_{\rm Edd}$. Similar FIR excesses are also found for five $z\gtrsim6$ low-$λ_{\rm Edd}$ quasars ($λ_{\rm Edd}<0.2$) in the literature. We show that the overall SFR, $M_{\rm BH}$, and $λ_{\rm Edd}$ distributions of these and other sub-mm-detected quasars at $z\gtrsim6$ can be explained with the evolutionary track of high-redshift quasars in a simulation study where low $λ_{\rm Edd}$ and high SFR quasars are expected at the end of the SMBH growth. This suggests that the nuclear activities of the low $λ_{\rm Edd}$, high $L_{\rm FIR}$ quasars are on the brink of being turned off, while their host galaxies continue to form the bulk of their stars at SFR $>100~M_{\odot}$ yr$^{-1}$.
description: 15 pages, 7 figures, 3 tables. Accepted for publication in ApJ
Aasis speaking tasks for Finnish L2 learners (2024)
Creators: name: Von Zansen, Anna
Publisher: name: Zenodo
Year: 2024
Subjects: speaking tasks
language assessment
language test
speaking test
task development
Aasis
automated speaking assessment
automatic assessment of spoken interaction
language learners

description: The Aasis project's speaking tasks for Finnish L2 learners, used during the project's data collection in 2024. There are two monologue tasks (tasks 1 and 2) and four dialogue tasks (tasks 3, 4A, 4B and 5).

The task instructions were available to the participants only in Finnish during data collection. After the task instructions in the document, there are support sheets for tasks 1, 2, 3 and 5. For publishing purposes, the tasks have been translated to English by research assistant Ilona Lähteenmäki.

Acknowledgements

Tasks 1 and 2 are the same as in the DigiTala project (see materials), of which task 2 was inspired by the narrative "YKI" tasks of the Finnish National Certificates of Language Proficiency. For task 4 we found the learning material "Finnish for practical purposes" produced by Yle oppiminen useful. Task 5 was inspired by the task "On a desert island" of the FDF2 project / FlowLang research group. We would like to thank all the teachers and researchers involved in designing these speaking tasks.
Multiple scattering enabled superdirectivity from a subwavelength ensemble of resonators
Creators: name: Metais, S.
name: Lerosey, G.
name: Lemoult, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An ensemble of resonators arranged on a sub-wavelength scale is usually considered as a bulk effective medium, known as a metamaterial, and can offer unusual macroscopic properties. Here, we take a different approach and limit ourselves to the study of only a few number of such elementary components and demonstrate that it still offers uncommon opportunities. Typically, thanks to the multiple scattering and the phase shift that the resonances offer, we observe fields that vary at scales completely independent of the wavelength in freespace. By smartly tuning the resonance frequencies, we can design at will the complex current distribution in those resonators. This way, we design a superdirective antenna, {\it ie.} an antenna that is surprisingly more directive than its size would foreshadow. This approach is verified numerically and experimentally in the context of microwaves, but this applies to any wave-field where sub-wavelength resonators exist.
description: 3 figures
Intranstylum triformum Schodel 1983
Creators: name: Mayén-Estrada, Rosaura
name: Pinto Utz, Laura R.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Intranstylum
Intranstylum triformum

description: Intranstylum triformum Schödel, 1983
 Known Distribution. Austria, Germany, Poland, and Slovakia.
 Hosts. Gammarus pulex; Gammarus roeselii (cited as Carinogammarus roeseli); Gammarus sp.; gammarids.
 References. Schödel 1983, 1986 a, 1987; Morado & Small 1995; Jankowski 2007; Blatterer 2008.
description: Published as part of Mayén-Estrada, Rosaura & Pinto Utz, Laura R., 2018, A checklist of species of Vorticellidae (Ciliophora: Peritrichia) epibionts of crustaceans, pp. 301-328 in Zootaxa 4500 (3) on page 307, DOI: 10.11646/zootaxa.4500.3.1, http://zenodo.org/record/5297657
Coupled Aggregation and Sedimentation Processes: Three Dimensional Off-Lattice Simulations
Creators: name: Leone, R.
name: Odriozola, G.
name: Mussio, L.
name: Schmitt, A.
name: Hidalgo-Alvarez, R.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Coupled aggregation and sedimentation processes were studied by means of three dimensional computer simulations. For this purpose, a large prism with no periodic boundary conditions for the sedimentation direction was considered. Furthermore, three equally sized and mutually excluded regions were defined inside the prism, a top, a middle and a bottom region. This allows to study the time evolution of the cluster size distribution and the cluster structure separately for each region. The mass distribution profile and the center of mass position were also accessed as a function of time. For the bottom region, the effects of the sediment formation on the kinetics of growth and on the cluster structure were clearly observed. The obtained results not only agree with the experimental data obtained by Allain et. al. and with the simulations made by Gonzalez but also allow to gain further insight in the details.
description: 15 figures
Adaptive isogeometric boundary element methods with local smoothness control
Creators: name: Gantner, Gregor
name: Praetorius, Dirk
name: Schimanko, Stefan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D07, 65N38, 65N50, 65Y20

description: In the frame of isogeometric analysis, we consider a Galerkin boundary element discretization of the hyper-singular integral equation associated with the 2D Laplacian. We propose and analyze an adaptive algorithm which locally refines the boundary partition and, moreover, steers the smoothness of the NURBS ansatz functions across elements. In particular and unlike prior work, the algorithm can increase and decrease the local smoothness properties and hence exploits the full potential of isogeometric analysis. We prove that the new adaptive strategy leads to linear convergence with optimal algebraic rates. Numerical experiments confirm the theoretical results. A short appendix comments on analogous results for the weakly-singular integral equation.
Temperature inversion in granular fluids under gravity
Creators: name: Ramirez, Rosa
name: Soto, Rodrigo
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study, via hydrodynamic equations, the granular temperature profile of a granular fluid under gravity and subjected to energy injection from a base. It is found that there exists a turn-up in the granular temperature and that, far from the base, it increases linearly with height. We show that this phenomenon, observed previously in experiments and computer simulations, is a direct consequence of the heat flux law, different form Fourier's, in granular fluids. The positive granular temperature gradient is proportional to gravity and a transport coefficient $μ_0$, relating the heat flux to the density gradients, that is characteristic of granular systems. Our results provide a method to compute the value $μ_0$ for different restitution coefficients. The theoretical predictions are verified by means of molecular dynamics simulations, and the value of $μ_0$ is computed for the two dimensional inelastic hard sphere model. We provide, also, a boundary condition for the temperature field that is consistent with the modified Fourier's law.
description: Submitted to Physica A
Probing local cosmic rays using Fermi-LAT observation of a mid-latitude region in the third Galactic quadrant
Creators: name: Shen, Zhao-Qiang
name: Huang, Xiaoyuan
name: Yuan, Qiang
name: Fan, Yi-Zhong
name: Wei, Da-Ming
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The $γ$-ray observation of interstellar gas provides a unique way to probe the cosmic rays (CRs) outside the solar system. In this work, we use an updated version of Fermi-LAT data and recent multi-wavelength tracers of interstellar gas to re-analyze a mid-latitude region in the third Galactic quadrant and estimate the local CR proton spectrum. Two $γ$-ray production cross section models for $pp$ interaction, the commonly used one from Kamae et al. (2006) and the up-to-date one from Kafexhiu et al. (2014), are adopted separately in the analysis. Both of them can well fit the emissivity and the derived proton spectra roughly resemble the direct measurements from AMS-02 and Voyager 1, but rather different spectral parameters are indicated. A break at $4\pm1~{\rm GeV}\;c^{-1}$ is shown if the cross section model by Kamae et al. (2006) is adopted. The resulting spectrum is $\lesssim 20\%$ larger than the AMS-02 observation above $15~\rm GeV$ and consistent with the de-modulated spectrum within $2\%$. The proton spectrum based on the cross section model of Kafexhiu et al. (2014) is about $1.4-1.8$ times that of AMS-02 at $2-100~\rm GeV$, however the difference decreases to $20\%$ below $10~\rm GeV$ with respect to the de-modulated spectrum. A spectral break at $20\pm11~{\rm GeV}\;c^{-1}$ is required in this model. An extrapolation down to $300~\rm MeV$ is performed to compare with the observation of Voyager 1, and we find a deviation of $\lesssim 2.5σ$ for both the models. In general, an approximately consistent CR spectrum can be obtained using $γ$-ray observation nowadays, but we still need a better $γ$-ray production cross section model to derive the parameters accurately.
description: 10 pages, 6 figures. Accepted for publication in PRD
Pseudo-Supersymmetric Quantum Mechanics and Isospectral Pseudo-Hermi tian Hamiltonians
Creators: name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the properties and consequences of pseudo-supersymmetry for quantum systems admitting a pseudo-Hermitian Hamiltonian. We explore the Witten index of pseudo-supersymmetry and show that every pair of diagonalizable (not necessarily Hermitian) Hamiltonians with discrete spectra and real or complex-conjugate pairs of eigenvalues are isospectral and have identical degeneracy structure except perhaps for the zero eigenvalue if and only if they are pseudo-supersymmetric partners. This implies that pseudo-supersymmetry is the basic framework for generating non-Hermitian PT-symmetric and non-PT-symmetric Hamiltonians with a real spectrum via a Darboux transformation, and shows that every diagonalizable Hamiltonian H with a discrete spectrum and real or complex-conjugate pairs of eigenvalues may be factored as H=L^# L where L is a linear operator with pseudo-adjoint L^#. In particular, this factorization applies to PT-symmetric and Hermitian Hamiltonians. The nondegenerate two-level systems provide a class of Hamiltonians that are pseudo-Hermitian. We demonstrate the implications of our general results for this class in some detail.
description: Minor corrections, accepted for publication in Nucl. Phys. B
From Practical to Theoretical Thinking: The Impact of the Role-Play Activity
Creators: name: Pierri, Anna
Publisher: name: Journal of e-Learning and Knowledge Society
Year: 2019

description: This paper concerns the analysis of the outcomes of a role-play activity aimed at fostering conceptual understanding of linear algebra for the first-year engineering students. The role of the teacher is considered in order to investigate about whether the designed role–play activity is able to affect the passage from practical to theoretical thinking. The analysis shows that, in spite of some difficulties related to the use of language, the students have improved their mastery of theoretical thinking
description: Journal of e-Learning and Knowledge Society, Vol 14 No 3 (2018): Journal of e-Learning and Knowledge Society
'Stable' QPOs and Black Hole Properties from Diskoseismology
Creators: name: Wagoner, Robert V.
name: Silbergleit, Alexander S.
name: Ortega-Rodriguez, Manuel
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compare our calculations of the frequencies of the fundamental g, c, and p--modes of relativistic thin accretion disks with recent observations of high frequency QPOs in X-ray binaries with black hole candidates. These classes of modes encompass all adiabatic perturbations of such disks. The frequencies of these modes depend mainly on only the mass and angular momentum of the black hole; their weak dependence on disk luminosity is also explicitly indicated. Identifying the recently discovered relatively stable QPO pairs with the fundamental g and c modes provides a determination of the mass and angular momentum of the black hole. For GRO J1655-40, $M=5.9\pm 1.0 M_\sun$, $J=(0.917\pm 0.024)GM^2/c$, in agreement with spectroscopic mass determinations. For GRS 1915+105, $M=42.4\pm 7.0 M_\sun$, $J=(0.926\pm 0.020)GM^2/c$ or (less favored) $M=18.2\pm 3.1 M_\sun$, $J=(0.701\pm 0.043)GM^2/c$. We briefly address the issues of the amplitude, frequency width, and energy dependence of these QPOs.
description: 10 pages, 1 figure. Accepted for publication in Astrophysical Journal Letters
Weakly nonlocal irreversible thermodynamics - the Ginzburg-Landau equation
Creators: name: Van, Peter
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The variational approach to weakly nonlocal thermodynamic theories is critically revisited in the light of modern nonequilibrium thermodynamics. The example of Ginzburg-Landau equation is investigated in detail.
description: 8 pages, Lecture delivered on CIMRF'01 in Berlin
Electrodynamics of a Coulomb Glass in n-type Silicon
Creators: name: Helgren, E.
name: Armitage, N. P.
name: Gruner, G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Optical measurements of the real and imaginary frequency dependent conductivity of uncompensated n-type silicon are reported. The experiments are done in the quantum limit, $ \hbarω> k_{B}T$, across a broad doping range on the insulating side of the Metal-Insulator transition (MIT). The observed low energy linear frequency dependence shows characteristics consistent with theories of a Coulomb glass, but discrepancies exist in the relative magnitudes of the real and imaginary components. At higher energies we observe a crossover to a quadratic frequency dependence that is sharper than expected over the entire dopant range. The concentration dependence gives evidence that the Coulomb interaction energy is the relevant energy scale that determines this crossover.
description: 5 pages, 4 figures; accepted for publication in Phys. Rev. Lett
Additional file 1: of Mixed methods evaluation of implementation and outcomes in a community-based cancer prevention intervention
Creators: name: King, Emily
name: Moore, Carla
name: Wilson, Hannah
name: Harden, Samantha
name: Davis, Marsha
name: Berg, Alison
Publisher: name: figshare
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Cooking for a Lifetime of Cancer Prevention (C4L) Program Instructor Training Agenda. Agenda for training of program instructors. (PDF 164 kb)
Intranstylum variabilis Stiller 1935
Creators: name: Mayén-Estrada, Rosaura
name: Pinto Utz, Laura R.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Intranstylum
Intranstylum variabilis

description: Intranstylum variabilis Stiller, 1935
 Known Distribution. The Netherlands.
 Hosts. Gammarus tigrinus.
 References. Stiller 1971; Bierhof & Ross 1977; Fernandez-Leborans & Tato-Porto 2000.
description: Published as part of Mayén-Estrada, Rosaura & Pinto Utz, Laura R., 2018, A checklist of species of Vorticellidae (Ciliophora: Peritrichia) epibionts of crustaceans, pp. 301-328 in Zootaxa 4500 (3) on page 307, DOI: 10.11646/zootaxa.4500.3.1, http://zenodo.org/record/5297657
Casimir energy in a small volume multiply connected static hyperbolic pre-inflationary Universe
Creators: name: Muller, Daniel
name: Fagundes, Helio V.
name: Opher, Reuven
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A few years ago, Cornish, Spergel and Starkman (CSS), suggested that a multiply connected ``small'' Universe could allow for classical chaotic mixing as a pre-inflationary homogenization process. The smaller the volume, the more important the process. Also, a smaller Universe has a greater probability of being spontaneously created. Previously DeWitt, Hart and Isham (DHI) calculated the Casimir energy for static multiply connected flat space-times. Due to the interest in small volume hyperbolic Universes (e.g. CSS), we generalize the DHI calculation by making a a numerical investigation of the Casimir energy for a conformally coupled, massive scalar field in a static Universe, whose spatial sections are the Weeks manifold, the smallest Universe of negative curvature known. In spite of being a numerical calculation, our result is in fact exact. It is shown that there is spontaneous vacuum excitation of low multipolar components.
description: accepted for publication in phys. rev. D
Aasis speaking tasks for Finnish L2 learners (2024)
Creators: name: Von Zansen, Anna
Publisher: name: Zenodo
Year: 2024
Subjects: speaking tasks
language assessment
language test
speaking test
task development
Aasis
automated speaking assessment
automatic assessment of spoken interaction
language learners

description: The Aasis project's speaking tasks for Finnish L2 learners, used during the project's data collection in 2024. There are two monologue tasks (tasks 1 and 2) and four dialogue tasks (tasks 3, 4A, 4B and 5).

The task instructions are available in Finnish. After the task instructions in the document, there are support sheets for tasks 1, 2, 3 and 5. 

Acknowledgements:

Tasks 1 and 2 are the same as in the DigiTala project (see materials), of which task 2 was inspired by the narrative "YKI" tasks of the Finnish National Certificates of Language Proficiency. For task 4 we found the learning material "Finnish for practical purposes" produced by Yle oppiminen useful. Task 5 was inspired by the task "On a desert island" of the FDF2 project / FlowLang research group. We would like to thank all the teachers and researchers involved in designing these speaking tasks.
title: Energiesystemmodellierung auf Basis energetischer Stadtraumtypen
Creators: name: Steinort, Tim Mikku
Publisher: name: FH Münster - University of Applied Sciences
Year: 2025

description: Die Energiewende und die angestrebte Treibhausgasneutralität erfordern unter anderem eine Transformation des Gebäudesektors, welcher für 30 % der deutschen Treibhausgasemissionen verantwortlich ist. Mit der zunehmenden Verbreitung sektorgekoppelter Technologien wird die Optimierung von Energiesystemen jedoch immer komplexer. Die Energiesystemmodellierung bietet eine Möglichkeit, Energiesysteme hinsichtlich Kosten und Treibhausgasemissionen zu optimieren. Die Anwendung wird jedoch aufgrund des Bedarfs an Rechenressourcen und langen Rechenzeiten eingeschränkt.
Das Forschungsprojekt FutureBEEing entwickelt einen integrierten Ansatz zur nachhaltigen Transformation von Wohnquartieren. Der entwickelte Modellierungsansatz zeigt eine ressourcenschonende Möglichkeit, die Ergebnisqualität zur Optimierung von Quartieren vereinfacht, nach der Energiesystemmodellierung, anzuwenden. Hierfür werden energetische Stadtraumtypen definiert, die den Wohngebäudebestand Deutschlands in typische Siedlungsräume einteilen. Durch die Erstellung einer Datenbank ist die Optimierung der Energiesysteme der energetischen Stadtraumtypen nur einmalig notwendig. Die detaillierten Ergebnisse werden anschließend auf das Untersuchungsgebiet übertragen. Eine Optimierung eines jeden Untersuchungsgebiets entfällt somit.
Der Modellierungsansatz aus FutureBEEing basiert auf einem Hybrid-Ansatz, der Elemente aus Bottom-up- und Top-down-Ansätzen kombiniert. Auf Grundlage der definierten Anforderungen aus FutureBEEing an den Modellierungsansatz werden Forschungsprojekte zur energetischen Leitplanung und der Spreadsheet Energy System Model Generator untersucht und eingeordnet. Die Untersuchung zeigt, dass die energetischen Stadtraumtypen aus dem Projekt UrbanReNet für eine Implementierung in den Spreadsheet Energy System Model Generator geeignet sind. Die Einteilung der energetischen Stadtraumtypen erfolgt basierend auf einer Untersuchung der Eingangsparameter des Spreadsheet Energy System Model Generator. Diese Untersuchung ermöglicht eine Einteilung der Parameter in modellbildende, potenzialabhängige und bedarfsabhängige Parameter. Ein Konzept zur vereinfachten Bedarfsermittlung und festgestellte Korrelationen zwischen den Parametern reduzieren die Anzahl relevanter Parameter zur Einteilung energetischer Stadtraumtypen.
Für die Anwendung des Modellierungsansatzes in FutureBEEing sind basierend auf den energetischen Stadtraumtypen aus UrbanReNet die Parameter Bewohnerzahl, Gebäudegröße, Sanierungsstufe, Dachausrichtung und Standort für die weitere Einteilung energetischer Stadtraumtypen relevant. Zukünftige Untersuchungen zu den Ausprägungsstufen dieser Parameter sowie eine Validierung der Ergebnisse sind erforderlich, um den Modellierungsansatz weiterzuentwickeln und eine Anwendung in FutureBEEing zu ermöglichen.
Experimental hints of Gravity in Large Extra Dimensions?
Creators: name: Sigurdsson, Steinn
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent conjectures suggest the universe may have large extra dimensions, through which gravity propagates. This implies gross departures from Newton's law of gravity at small length scales. Here I consider some implications for particle dynamics on scales comparable to the compactification radius, $R_c \ltorder 1$ mm. During planet formation, coalescence of micron sized dust grains to planetesimals is a rate critical step. Blum et al (2000) found dust grain aggregates form low fractal dimension structures in microgravity, consistent with high angular momentum coalescence. I consider the effects of non-Newtonian gravity on dust aggregation on scales less than $R_c$ and show they naturally coalesce into low dimensional structures with high specific angular momentum. We infer $R_c \approx 80$ microns.
description: 5 pages, revtex, Int. Jour. Mod. Phys. D (Special issue of GRF essays 2001), single spaced version
Nonlinear atom optics and bright gap soliton generation in finite optical lattices
Creators: name: Carusotto, Iacopo
name: Embriaco, Davide
name: La Rocca, Giuseppe C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We theoretically investigate the transmission dynamics of coherent matter wave pulses across finite optical lattices in both the linear and the nonlinear regimes. The shape and the intensity of the transmitted pulse are found to strongly depend on the parameters of the incident pulse, in particular its velocity and density: a clear physical picture for the main features observed in the numerical simulations is given in terms of the atomic band dispersion in the periodic potential of the optical lattice. Signatures of nonlinear effects due the atom-atom interaction are discussed in detail, such as atom optical limiting and atom optical bistability. For positive scattering lengths, matter waves propagating close to the top of the valence band are shown to be subject to modulational instability. A new scheme for the experimental generation of narrow bright gap solitons from a wide Bose-Einstein condensate is proposed: the modulational instability is seeded in a controlled way starting from the strongly modulated density profile of a standing matter wave and the solitonic nature of the generated pulses is checked from their shape and their collisional properties.
On closed rotating worlds
Creators: name: Chrobok, Thoralf
name: Obukhov, Yuri N.
name: Scherfner, Mike
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new solution for the stationary closed world with rigid rotation is obtained for the spinning fluid source. It is found that the spin and vorticity are locally balanced. This model qualitatively shows that the local rotation of the cosmological matter can be indeed related to the global cosmic vorticity, provided the total angular momentum of the closed world is vanishing.
description: 10 pages, Revtex, to appear in Phys. Rev. D63
A Mellin Space Approach to Cosmological Correlators
Creators: name: Sleight, Charlotte
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a Mellin space approach to the evaluation of late-time momentum-space correlation functions of quantum fields in $\left(d+1\right)$-dimensional de Sitter space. The Mellin-Barnes representation makes manifest the analytic structure of late-time correlators and, more generally, provides a convenient general $d$ framework for the study of conformal correlators in momentum space. In this work we focus on tree-level correlation functions of general scalars as a prototype, including $n$-point contact diagrams and $4$-point exchanges. For generic scalars, both the contact and exchange diagrams are given by (generalised) Hypergeometric functions, which reduce to existing expressions available in the literature for $d=3$ and external scalars which are either simultaneously conformally coupled or massless. This approach can also be used for the perturbative bulk evaluation of momentum-space boundary correlators in $\left(d+1\right)$-dimensional anti-de Sitter space (Witten diagrams).
description: 44+14 pages, 9 figures
Integration over matrix spaces with unique invariant measures
Creators: name: Prosen, T.
name: Seligman, T. H.
name: Weidenmueller, H. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a method to calculate integrals over monomials of matrix elements with invariant measures in terms of Wick contractions. The method gives exact results for monomials of low order. For higher--order monomials, it leads to an error of order 1/N^alpha where N is the dimension of the matrix and where alpha is independent of the degree of the monomial. We give a lower bound on the integer alpha and show how alpha can be increased systematically. The method is particularly suited for symbolic computer calculation. Explicit results are given for O(N), U(N) and for the circular orthogonal ensemble.
description: 12 pages in revtex, no figures