cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rotational Modulation of M/L Dwarfs due to Magnetic Spots
Creators: name: Lane, C.
name: Hallinan, G.
name: Zavala, R. T.
name: Butler, R. F.
name: Boyle, R. P.
name: Bourke, S.
name: Antonova, A.
name: Doyle, J. G.
name: Vrba, F. J.
name: Golden, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We find periodic I-band variability in two ultracool dwarfs, TVLM 513-46546 and 2MASS J00361617+1821104, on either side of the M/L dwarf boundary. Both of these targets are short-period radio transients, with the detected I-band periods matching those found at radio wavelengths (P=1.96 hr for TVLM 513-46546, and P=3 hr for 2MASS J00361617+1821104). We attribute the detected I-band periodicities to the periods of rotation of the dwarfs, supported by radius estimates and measured $v$ sin $i$ values for the objects. Based on the detected period of rotation of TVLM 513-46546 (M9) in the I-band, along with confirmation of strong magnetic fields from recent radio observations, we argue for magnetically induced spots as the cause of this periodic variability. The I-band rotational modulation of L3.5 dwarf 2MASS J00361617+1821104 appeared to vary in amplitude with time. We conclude that the most likely cause of the I-band variability for this object is magnetic spots, possibly coupled with time-evolving features such as dust clouds.
description: 11 pages, 2 figures, accepted for publication in ApJ Letters
19F nuclear spin relaxation and spin diffusion effects in the single ion magnet LiYF4:Ho3+
Creators: name: Malkin, B. Z.
name: Vanyunin, M. V.
name: Graf, M. J.
name: Lago, J.
name: Borsa, F.
name: Lascialfari, A.
name: Tkachuk, A. M.
name: Barbara, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Temperature and magnetic field dependences of the 19F nuclear spin-lattice relaxation in a single crystal of LiYF4 doped with holmium are described by an approach based on a detailed consideration of the magnetic dipole-dipole interactions between nuclei and impurity paramagnetic ions and nuclear spin diffusion processes. The observed non-exponential long time recovery of the nuclear magnetization after saturation at intermediate temperatures is in agreement with predictions of the spin-diffusion theory in a case of the diffusion limited relaxation. At avoided level crossings in the spectrum of electron-nuclear states of the Ho3+ ion, rates of nuclear spin-lattice relaxation increase due to quasi-resonant energy exchange between nuclei and paramagnetic ions, in contrast to the predominant role played by electronic cross-relaxation processes in the low-frequency ac-susceptibility.
description: 27 pages total, 5 figures, accepted for publication, Eur. Phys. J. B
A Candidate Kiloparsec-scale Quasar Pair at $z=5.66$
Creators: name: Yue, Minghao
name: Fan, Xiaohui
name: Yang, Jinyi
name: Wang, Feige
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of a close quasar pair candidate at $z=5.66$, J2037--4537. J2037--4537 is resolved into two quasar images at the same redshift in ground-based observations. Followup spectroscopy shows significant differences in both the continuum slopes and emission line properties of the two images. The two quasar images have a projected separation of $1\farcs24$ ($7.3\text{~kpc}$ at $z=5.66$) and a redshift difference of $Δz\lesssim0.01$. High-resolution images taken by {\em Hubble Space Telescope} do not detect the foreground lensing galaxy. The observational features of J2037--4537 strongly disfavor the lensing hypothesis. If J2037--4537 is a physical quasar pair, it indicates a quasar clustering signal of $\sim10^5$ at a separation of $\sim10$ proper kpc (pkpc), and gives the first observational constraint on the pair fraction of $z>5$ quasars, $f_\text{pair}(r<30\text{~pkpc})>0.3\%$. The properties of J2037--4537 are consistent with those of merger-triggered quasar pairs in hydrodynamical simulations of galaxy mergers.
description: 8 pages, 4 figures. Accepted by ApJL; Corrected minor errors of the previous version
The design of a distributed kernel for a multiprocessor system
Creators: name: Boyle, Patrick David
Publisher: name: University of British Columbia
Year: 2010

description: The possibilities of increased responsiveness, throughput, availability, reliability and cost-effectiveness invite investigation of the hardware and software design of multiprocessor computing systems. This thesis describes an experiment in the design of a multiprocessor operating system based on the distribution of kernel functionality among the processors. One of the design objectives was to build a system capable of supporting real-time applications and a general-purpose, multi-user environment concurrently. The hardware base is a simple, closely-coupled, star network of autonomous computers constructed from "off-the-shelf" boards. The operating system developed, named Distributed Verex, is an extension of Verex which is a descendant of Thoth. The Verex kernel provides an environment of processes and inter-process communication via message-passing on a uniprocessor computer. Distributed Verex provides the same environment uniformly and transparently throughout the multiprocessor system. Distributed Verex has been implemented and is undergoing continuing development. Initial performance measurements are given.
An Eccentric Binary Millisecond Pulsar in the Galactic Plane
Creators: name: Champion, D. J.
name: Ransom, S. M.
name: Lazarus, P.
name: Camilo, F.
name: Bassa, C.
name: Kaspi, V. M.
name: Nice, D. J.
name: Freire, P. C. C.
name: Stairs, I. H.
name: van Leeuwen, J.
name: Stappers, B. W.
name: Cordes, J. M.
name: Hessels, J. W. T.
name: Lorimer, D. R.
name: Arzoumanian, Z.
name: Backer, D. C.
name: Bhat, N. D. R.
name: Chatterjee, S.
name: Cognard, I.
name: Deneva, J. S.
name: Faucher-Giguere, C. -A.
name: Gaensler, B. M.
name: Han, J. L.
name: Jenet, F. A.
name: Kasian, L.
name: Kondratiev, V. I.
name: Kramer, M.
name: Lazio, J.
name: McLaughlin, M. A.
name: Venkataraman, A.
name: Vlemmings, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar with a rotational period of 2.15 ms in a highly eccentric (e = 0.44) 95-day orbit around a solar mass companion. Infrared observations identify a possible main-sequence companion star. Conventional binary stellar evolution models predict neither large orbital eccentricities nor main-sequence companions around millisecond pulsars. Alternative formation scenarios involve recycling a neutron star in a globular cluster then ejecting it into the Galactic disk or membership in a hierarchical triple system. A relativistic analysis of timing observations of the pulsar finds its mass to be 1.74+/-0.04 Msun, an unusually high value.
description: 28 pages, 4 figures inc Supplementary On-Line Material. Accepted for publication in Science, published on Science Express: 10.1126/science.1157580
Scattering of Topological Solitons on Barriers and Holes in Two λϕ^4 Models
Creators: name: Al-Alawi, Jassem H.
name: Zakrzewski, Wojtek J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present results of our studies of various scattering properties of topological solitons on obstructions in the form of holes and barriers in 1+1 dimensions. Our results are based on two models involving a ϕ^4 potential. The obstructions are characterised by a potential parameter, λwhich has a non-zero value in a certain region of space and zero elsewhere. In the first model the potential parameter is included in the potential and in the second model the potential parameter is included in the metric. Our results are based on numerical simulations and analytical considerations.
description: 11 pages, 12 postscript figures
Exploring the Physical Basis of Solar Cycle Predictions: Flux Transport Dynamics and Persistence of Memory in Advection versus Diffusion Dominated Solar Convection Zones
Creators: name: Yeates, A. R.
name: Nandy, D.
name: Mackay, D. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The predictability, or lack thereof, of the solar cycle is governed by numerous separate physical processes that act in unison in the interior of the Sun. Magnetic flux transport and the finite time delay it introduces, specifically in the so-called Babcock-Leighton models of the solar cycle with spatially segregated source regions for the alpha and omega effects, play a crucial rule in this predictability. Through dynamo simulations with such a model, we study the physical basis of solar cycle predictions by examining two contrasting regimes, one dominated by diffusive magnetic flux transport in the solar convection zone, the other dominated by advective flux transport by meridional circulation. Our analysis shows that diffusion plays an important role in flux transport, even when the solar cycle period is governed by the meridional flow speed. We further examine the persistence of memory of past cycles in the advection and diffusion dominated regimes through stochastically forced dynamo simulations. We find that in the advection-dominated regime, this memory persists for up to three cycles, whereas in the diffusion-dominated regime, this memory persists for mainly one cycle. This indicates that solar cycle predictions based on these two different regimes would have to rely on fundamentally different inputs - which may be the cause of conflicting predictions. Our simulations also show that the observed solar cycle amplitude-period relationship arises more naturally in the diffusion dominated regime, thereby supporting those dynamo models in which diffusive flux transport plays a dominant role in the solar convection zone.
description: 35 pages, 12 figures, submitted to ApJ
Theory of Specific Heat in Glass Forming Systems
Creators: name: Hentschel, H. G. E.
name: Ilyin, Valery
name: Procaccia, Itamar
name: Schupper, Nurith
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Experimental measurements of the specific heat in glass-forming systems reveal anomalies in the temperature dependence of the specific heat, including the so called "specific heat peak" in the vicinity of the glass transition. The aim of this paper is to provide theoretical explanations of these anomalies in general and a quantitative theory in the case of a simple model of glass-formation. We first present new simulation results for the specific heat in a classical model of a binary mixture. We show that in addition to the formerly observed specific heat peak there is a second peak at lower temperatures which was not observable in earlier simulations. Second, we present a general relation between the specific heat and the bulk modulus and thus offer a smooth connection between the liquid and amorphous solid states. The central result of this paper is a connection between the micro-melting of clusters in the system and the appearance of specific heat peaks. We relate the two peaks to changes in the bulk and shear moduli. We propose that the phenomenon of glass-formation is accompanied by a fast change in the bulk and the shear moduli, but these fast changes occur in different ranges of the temperature. Lastly, we demonstrate how to construct a theory of the frequency dependent complex specific heat, expected from heterogeneous clustering in the liquid state of glass formers. A specific example is provided in the context of our model for the dynamics of glycerol. The theoretical frequency dependent specific heat agrees well with experimental measurements on glycerol. We conclude the paper by stating that there is nothing universal about the temperature dependence of the specific heat in glass formers - unfortunately one needs to understand each case by itself.
Performing Identity: Early Modern Players and the Crafting of Professional Legitimacy
Creators: name: Spitz-Lieberman, Rachel
Publisher: name: Digital Repository at the University of Maryland
Year: 2014
Subjects: subject: History

description: Professional theater developed in Europe during the sixteenth century.  Though it quickly became a popular form of entertainment, some viewed professional actors with skepticism and hostility.  This thesis seeks to contextualize hostile responses to the theater and professional player by examining the social, religious, and economic conditions perceived by critics of the theater.  This thesis begins with an examination of the commedia dell'arte and Jesuit school dramas to gain a broader understanding of perceptions of theater across social and religious boundaries.  It then turns to England for a close examination of anti-theatrical literature and the methods players employed to craft an aura of professional respectability that contradicted the claims of their detractors.
Synergistic Gravity and the Role of Resonances in GRS-Inspired Braneworlds
Creators: name: Bogdanos, C.
name: Dimitriadis, A.
name: Tamvakis, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider 5D braneworld models of quasi-localized gravity in which 4D gravity is reproduced at intermediate scales while the extra dimension opens up at both the very short and the very long distances, where the geometry is flat. Our main interest is the interplay between the zero mode of these models, whenever a normalizable zero mode exists, and the effects of zero energy graviton resonant modes coming from the contributions of massive KK modes. We first consider a compactified version of the GRS model and find that quasi-localized gravity is characterized by a scale for which both the resonance and the zero mode have significant contribution to 4D gravity. Above this scale, gravity is primarily mediated by the zero mode, while the resonance gives only minor corrections. Next, we consider an asymmetric version of the standard non-compact GRS model, characterized by different cosmological constants on each AdS side. We show that a resonance is present but the asymmetry, through the form of the localizing potential, can weaken it, resulting in a shorter lifetime and, thus, in a shorter distance scale for 4D gravity. As a third model exhibiting quasi-localization, we consider a version of the GRS model in which the central positive tension brane has been replaced by a configuration of a scalar field propagating in the bulk.
description: 18 pages, 3 figures, added 1 figure, revised version as published in Class. Quant. Grav
Strongly electron-correlated semimetal RuI$_3$ with a layered honeycomb structure
Creators: name: Nawa, Kazuhiro
name: Imai, Yoshinori
name: Yamaji, Youhei
name: Fujihara, Hideyuki
name: Yamada, Wakana
name: Takahashi, Ryotaro
name: Hiraoka, Takumi
name: Hagihala, Masato
name: Torii, Shuki
name: Aoyama, Takuya
name: Ohashi, Takamasa
name: Shimizu, Yasuhiro
name: Gotou, Hirotada
name: Itoh, Masayuki
name: Ohgushi, Kenya
name: Sato, Taku J
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A polymorph of RuI$_3$ synthesized under high pressure was found to have a two-layered honeycomb structure. The resistivity of RuI$_3$ exhibits a semimetallic behavior, in contrast to insulating properties in $α$-RuCl$_3$. In addition, Pauli paramagnetic behavior was observed in the temperature dependence of a magnetic susceptibility and a nuclear spin-lattice relaxation rate 1/$T_1$. The band structure calculations indicate that contribution of the I 5$p$ components to the low-energy $t_\mathrm{2g}$ bands effectively decreases Coulomb repulsion, leading to semimetallic properties. The physical properties also suggest strong electron correlations in RuI$_3$.
description: 4 Figures
Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors
Creators: name: Dauler, Eric A.
name: Kerman, Andrew J.
name: Robinson, Bryan S.
name: Yang, Joel K. W.
name: Voronov, Boris
name: Gol'tsman, Gregory
name: Hamilton, Scott A.
name: Berggren, Karl K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A photon-number-resolving detector based on a four-element superconducting nanowire single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival time of individual photons. This detector can be used to characterize the photon statistics of non-pulsed light sources and to mitigate dead-time effects in high-speed photon counting applications. Furthermore, a 25% system detection efficiency at 1550 nm was demonstrated, making the detector useful for both low-flux source characterization and high-speed photon-counting and quantum communication applications. The design, fabrication and testing of this detector are described, and a comparison between the measured and theoretical performance is presented.
description: 13 pages, 5 figures
New agroforestry on European ecosystem service deficit farmland can compensate up to 43% of agricultural GHG emissions
Creators: name: Herzog, F.
name: Kay, S.
name: Roces-Diaz, J.
name: Crous-Durán, J.
name: Giannitsopoulos, M.
name: Graves, A.
name: Den Herder, M.
name: Moreno, G.
name: Mosquera-Losada, R.
name: Pantera, A.
name: Palma J., H.
name: Paracchini, M.-L.
name: Rega, C.
name: Rolo, V.
name: Rosati, A.
name: Smith J. Szerencsits, E.
Publisher: name: Zenodo
Year: 2019
Subjects: Carbon mitigation
Greenhouse gas
Arable farmland
European grassland.

description: Landscapes with a high share of agroforestry provide more regulating ecosystem services
than landscapes dominated by conventional agriculture (Kay et al. 2018). Yet, which type of
agroforestry to recommend depends on local and regional conditions and there may be regions
where there is a higher need for agroforestry than others.
We identified European farmlands where several ecosystem service (ES) deficits occur at the
same time (soil erosion, low soil organic carbon and biodiversity, nitrate surplus, irrigation, low
pest control and pollination potential). Almost ten percent of arable and grassland had more
than five and four stacked deficits, respectively (Figure 1). In those areas, the introduction of
agroforestry can help to reduce ES deficits. We propose 64 candidate agroforestry systems,
which are locally adapted and attractive for farmers. They range from lines of trees around
arable plots to relatively densely planted silvo-arable and silvo-pastoral systems.
As an example for the reduction of ES deficits, we modelled the potential carbon sequestration
of each candidate agroforestry system. The conversion of the 140,000 sqkm of priority
farmland to agroforestry would sequester - depending mainly on the tree species and density
- between 2 and 64 106 t of carbon per year in above and below ground biomass. This would
correspond to up to 43 percent of the European greenhouse gas emissions attributed to the
agricultural sector.
Missing energy look-alikes with 100 pb-1 at the LHC
Creators: name: Hubisz, Jay
name: Lykken, Joseph
name: Pierini, Maurizio
name: Spiropulu, Maria
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A missing energy discovery is possible at the LHC with the first 100 pb-1 of understood data. We present a realistic strategy to rapidly narrow the list of candidate theories at, or close to, the moment of discovery. The strategy is based on robust ratios of inclusive counts of simple physics objects. We study specific cases showing discrimination of look-alike models in simulated data sets that are at least 10 to 100 times smaller than used in previous studies. We discriminate supersymmetry models from non-supersymmetric look-alikes with only 100 pb-1 of simulated data, using combinations of observables that trace back to differences in spin.
description: 48 pages, 35 figures, 40 tables; v2 has clarified text, added tables, fixed typos and references; version to be published in Physical Review D
Open Science Competence Center at the Gdansk University of Technology Library in numbers
Creators: name: Szuflita-Żurawska, Magdalena
name: Wałek, Anna
Publisher: name: Zenodo
Year: 2020
Subjects: open science
competence center
researcher support

description: Bridge of Data project at Gdańsk University of Technology (GUT) was established to support researchers in their activities regarding different layers of Open Science. The project is unique in this part of Central and Eastern Europe. It involves three Pomeranian universities: Gdańsk University of Technology (leader), University of Gdańsk, and Gdańsk Medical University. Open Science Competence Center is the separate contact point that offers help and supporting services for “sharing” research culture. The Center provides various training, consultancies, and other events promoting the idea of opening science and try to popularize its benefits such as broader collaboration, increasing usage and citations, faster impact, or greater public engagement. Our Center in numbers (from the end of 2018) Number of workshops - 42 Number of online training - 15 Number of face to face consultations - 107 Number of verified datasets - 420 Data Management Plans from a wide range of scientific disciplines ( e.g. chemistry, engineering, electronics, architecture or economics) – about 200 from August 2019 to October 2020
description: 'Bridge of Data. Multidisciplinary Open Knowledge Transfer System - stage II: Open Research Data' project is co-financed by the European Regional Development Fund under the Operational Program Digital Poland 2014-2020
title: Gender, Power and Property: In my own right . The Rural Economy Development Programme (REDP) Working Paper Series
Creators: name: Byrne, Anne
name: Duvvury, Nata
name: Macken-Walsh, Áine
name: Watson, Tanya
Publisher: name: Rural Economy Development Programme
Year: 2013

description: Working paper
description: Women on farms in Ireland are a subject of feminist analysis for five decades. Salient themes are the constraints of patriarchal agriculture (O'Hara 1997; Shortall, 2004), the invisibility of women's farm work (Viney 1968; O'Har a 1998), gender inequalities in ownership of farm assets (Watson et al. 2009) and increasing professionalisation of farmwomen outside of agriculture (Kelly and Shortall 2002; Hanrahan 2007). Most women enter farming through marriage and family ties. Land o wnership is identified by Shortall (2004) as the critical factor underpinning male domination of the occupational category 'farmer' and considerable power differentials between men and women in family farming. This is an area that requires further investig ation. Our analysis, framed by theoretical models of feminisation and empowerment, explores cases where male farm property ownership in Ireland is disrupted in conventional and non - conventional agricultural settings. Do these cases provide evidence of new opportunities for women to become farm property owners, and in what contexts? What consequences do these opportunities have for farmwomen's empowerment and agency? How does women's farm property ownership disturb rural gender relations in the context of the family farm?
An Improved BAT Algorithm for Solving Job Scheduling Problems in Hotels and Restaurants
Creators: name: Rashid, Tarik A.
name: Toghramchi, Chra I. Shekho
name: Sindi, Heja
name: Alsadoon, Abeer
name: Bacanin, Nebojsa
name: Umar, Shahla U.
name: Shamsaldin, A. S.
name: Mohammadi, Mokhtar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: One popular example of metaheuristic algorithms from the swarm intelligence family is the Bat algorithm (BA). The algorithm was first presented in 2010 by Yang and quickly demonstrated its efficiency in comparison with other common algorithms. The BA is based on echolocation in bats. The BA uses automatic zooming to strike a balance between exploration and exploitation by imitating the deviations of the bat's pulse emission rate and loudness as it searches for prey. The BA maintains solution diversity using the frequency-tuning technique. In this way, the BA can quickly and efficiently switch from exploration to exploitation. Therefore, it becomes an efficient optimizer for any application when a quick solution is needed. In this paper, an improvement on the original BA has been made to speed up convergence and make the method more practical for large applications. To conduct a comprehensive comparative analysis between the original BA, the modified BA proposed in this paper, and other state-of-the-art bio-inspired metaheuristics, the performance of both approaches is evaluated on a standard set of 23 (unimodal, multimodal, and fixed-dimension multimodal) benchmark functions. Afterward, the modified BA was applied to solve a real-world job scheduling problem in hotels and restaurants. Based on the achieved performance metrics, the proposed MBA establishes better global search ability and convergence than the original BA and other approaches.
description: 13 pages
"hepdata_xs_tables_long.txt" of "Measurement of four-jet differential cross sections in $\sqrt{s}=8$ TeV proton-proton collisions using the ATLAS detector"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2016

description: Tables containing the detailed composition of the jet energy scale uncertainty
description: CERN-LHC. Differential cross sections for the production of at least four jets have been measured in proton--proton collisions at $\sqrt{s} = 8$ TeV at the Large Hadron Collider using the ATLAS detector. Events are selected if the four anti-$k_{t}$ R=0.4 jets with the largest transverse momentum ($p_{T}$) are well separated ($dR^{min}_{4j}>0.65$), all have $p_{T}>64$ GeV and rapidity $|y|<2.8$, and include at least one jet with $p_{T} >100$ GeV. The dataset corresponds to an integrated luminosity of 20.3 $fb^{-1}$. The cross sections, corrected for detector effects, are compared to leading-order and next-to-leading-order calculations as a function of the jet momenta, invariant masses, minimum and maximum opening angles and other kinematic variables.
Anomalous transport of a classical wave-particle entity in a tilted potential
Creators: name: Valani, Rahil N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A classical wave-particle entity in the form of a millimetric walking droplet can emerge on the free surface of a vertically vibrating liquid bath. Such wave-particle entities have been shown to exhibit hydrodynamic analogs of quantum systems. Using an idealized theoretical model of this wave-particle entity in a tilted potential, we explore its transport behavior. The integro-differential equation of motion governing the dynamics of the wave-particle entity transforms to a Lorenz-like system of ordinary differential equations (ODEs) that drives the particle's velocity. Several anomalous transport regimes such as absolute negative mobility (ANM), differential negative mobility (DNM) and lock-in regions corresponding to force-independent mobility, are observed. These observations motivate experiments in the hydrodynamic walking-droplet system for the experimental realizations of anomalous transport phenomena.
description: 6 pages, 4 figures. arXiv admin note: text overlap with arXiv:2012.10027, arXiv:2110.09754
Investigations on the effects of the flattening filter free treatment mode in radiotherapy based on the therapy of localized prostate carcinoma and pituitary adenoma
Creators: name: Treutwein, Marius
Publisher: name: Universität Regensburg
Year: 2021
Subjects: subject: flattening filter free, plan quality, secondary malignoma risk, IMRT, VMAT
subject: 530 Physik
subject: 610 Medizin

description: Abstract in English of a dissertation thesis also available in this repository: 
urn:nbn:de:bvb:355-epub-433707
Misalignment of the microquasar V4641 Sgr (SAX J1819.3--2525)
Creators: name: Martin, Rebecca G.
name: Reis, Rubens C.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the microquasar V4641 Sgr the spin of the black hole is thought to be misaligned with the binary orbital axis. The accretion disc aligns with the black hole spin by the Lense-Thirring effect near to the black hole and further out becomes aligned with the binary orbital axis. The inclination of the radio jets and the Fe$Kα$ line profile have both been used to determine the inclination of the inner accretion disc but the measurements are inconsistent. Using a steady state analytical warped disc model for V4641 Sgr we find that the inner disc region is flat and aligned with the black hole up to about $900 R_{\rm g}$. Thus if both the radio jet and fluorescent emission originates in the same inner region then the measurements of the inner disc inclination should be the same.
description: Accepted for publication in MNRAS
The portability of BCPL to the MC68000 via the intermediate language SLIM
Creators: name: Ranger, Eric Alfrey
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes the design of a system that converts the intermediate language SLIM, into assembler code for the Motorola MC68000. This is then assembled and loaded onto a MC68000 simulator where it successfully runs. The suitability of SLIM as an intermediate language is also studied, with a treatment on code optimization.
Vacancy localization in the square dimer model
Creators: name: Bouttier, J.
name: Bowick, M.
name: Guitter, E.
name: Jeng, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the classical dimer model on a square lattice with a single vacancy by developing a graph-theoretic classification of the set of all configurations which extends the spanning tree formulation of close-packed dimers. With this formalism, we can address the question of the possible motion of the vacancy induced by dimer slidings. We find a probability 57/4-10Sqrt[2] for the vacancy to be strictly jammed in an infinite system. More generally, the size distribution of the domain accessible to the vacancy is characterized by a power law decay with exponent 9/8. On a finite system, the probability that a vacancy in the bulk can reach the boundary falls off as a power law of the system size with exponent 1/4. The resultant weak localization of vacancies still allows for unbounded diffusion, characterized by a diffusion exponent that we relate to that of diffusion on spanning trees. We also implement numerical simulations of the model with both free and periodic boundary conditions.
description: 35 pages, 24 figures. Improved version with one added figure (figure 9), a shift s->s+1 in the definition of the tree size, and minor corrections
A phase field model for hydrogen-assisted fatigue
Creators: name: Golahmar, Alireza
name: Kristensen, Philip K.
name: Niordson, Christian F.
name: Martínez-Pañeda, Emilio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We present a new theoretical and numerical phase field-based formulation for predicting hydrogen-assisted fatigue. The coupled deformation-diffusion-damage model presented enables predicting fatigue crack nucleation and growth for arbitrary loading patterns and specimen geometries. The role of hydrogen in increasing fatigue crack growth rates and decreasing the number of cycles to failure is investigated. Our numerical experiments enable mapping the three loading frequency regimes and naturally recover Paris law behaviour for various hydrogen concentrations. In addition, Virtual S-N curves are obtained for both notched and smooth samples, exhibiting a good agreement with experiments.
Radiotherapy for osteoarthritis of the ankle and tarsal joints—analysis of 66 joints
Creators: name: Hautmann, Matthias G.
name: Hipp, Matthias
name: Neumaier, Ulrich
name: Steger, Felix
name: Brockmann, Silke
name: Treutwein, Marius
name: Ernstberger, Antonio
name: Ettl, Tobias
name: Kölbl, Oliver
name: Süß, Christoph
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: Ankle, Ankle joint, Tarsal joint, Radiotherapy, Low-dose radiation
subject: 610 Medizin

description: Purpose
Osteoarthritis of the ankle and tarsal joints is less common than osteoarthritis of the knee or hip, but the associated disability is at least as severe as that of the other major joints of the lower limb. The results for total arthroplasty are still not satisfactory. For this reason, arthrodesis is still the gold standard of non-joint-conserving surgery. For the reason of functionality, joint-conserving therapies play a major role in treatment of ankle and tarsal osteoarthritis. Low-dose radiotherapy has a long history of treatment of osteoarthritis. The aim of this survey was to examine the results of low-dose radiotherapy for osteoarthritis of the ankle and tarsal joints.
Materials and methods
The analysis was performed on patients of three German radiotherapy institutions and included 66 irradiated joints. Pain was documented with the numeric rating scale (NRS). Evaluation of the NRS was done before and directly after each radiation therapy course as well as for the follow-up of 24 months. The median age of the patients was 68 years, with 24.5% male and 75.5% female patients. The upper ankle was treated in 37.9%, the lower ankle in 27.3% and the tarsal joints in 34.8%.
Results
We could find a significant response to radiotherapy. For the whole sample, the median pain was 7 on the NRS before radiotherapy, 5 after 6 and 12 weeks, and 4 after 12 months. The percentage of patients with 0 or 1 on the NRS was 19.6% 12 months after radiotherapy. An improvement of joint mobility could be detected in 56.7% of the cases. All investigated subgroups had a significant reduction in pain.
Conclusion
Radiotherapy of ankle and tarsal osteoarthritis is an effective treatment without showing side effects. All analysed subgroups show a good response to radiotherapy for at least 24 months.
Generalized squeezing operators, bipartite Wigner functions and entanglement via Wehrl's entropy functionals
Creators: name: Marchiolli, Marcelo A.
name: Galetti, Diogenes
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new class of unitary transformations based on the su(1,1) Lie algebra that generalizes, for certain particular representations of its generators, well-known squeezing transformations in quantum optics. To illustrate our results, we focus on the two-mode bosonic representation and show how the parametric amplifier model can be modified in order to generate such a generalized squeezing operator. Furthermore, we obtain a general expression for the bipartite Wigner function which allows us to identify two distinct sources of entanglement, here labelled by dynamical and kinematical entanglement. We also establish a quantitative estimate of entanglement for bipartite systems through some basic definitions of entropy functionals in continuous phase-space representations.
description: 16 pages
The European Agroforestry innovation Network Fostering agroforestry in Europe
Creators: name: Mosquera-Losada M., R.
Publisher: name: Zenodo
Year: 2019
Subjects: innovation
afinet
technical
education
policy.

description: AFINET is a European Union funded project which overall objective of AFINET is the promotion
and innovation of European Agroforestry (AF) through the development of a multi-actor
interactive and innovation-driven network, based on successful sharing of practical experiences
and existing research knowledge, applied to different contexts, climates and agricultural
sectors. AFINET will modify AF systems design and management in order to increase the
agricultural systems production and profitability to promote a sustainable land management
throughout Europe. AFINET networking is based on nine Regional Innovation Networks in the
nine countries where it is based where over 300 stakeholders meet every six months. AFINET
first meeting aimed at asking farmers which are the main challenges to foster agroforestry in
Europe. Among all, challenges could be summarized in four main topics: technical, economic,
education and policy. Solutions to these challenges were discussed with all stakeholders and
a provisional list of innovations was produced that has been validated in the third RAIN meeting.
Innovation topics can be seen in Table 1 and the technical challenge can be grouped in
several clusters: Livestock management, Lower story management, woody perennials management
and horizontal innovation clusters for the technical challenge.
Cryogenic Penning-Trap Apparatus for Precision Experiments with Sympathetically Cooled (anti)protons
Creators: name: Niemann, M.
name: Meiners, T.
name: Mielke, J.
name: Pulido, N.
name: Schaper, J.
name: Borchert, M. J.
name: Cornejo, J. M.
name: Paschke, A. -G.
name: Zarantonello, G.
name: Hahn, H.
name: Lang, T.
name: Manzoni, C.
name: Marangoni, M.
name: Cerullo, G.
name: Morgner, U.
name: Fenske, J. -A.
name: Bautista-Salvador, A.
name: Lehnert, R.
name: Ulmer, S.
name: Ospelkaus, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Current precision experiments with single (anti)protons to test CPT symmetry progress at a rapid pace, but are complicated by the need to cool particles to sub-thermal energies. We describe a cryogenic Penning-trap setup for $^9$Be$^+$ ions designed to allow coupling of single (anti)protons to laser-cooled atomic ions for sympathetic cooling and quantum logic spectroscopy. We report on trapping and laser cooling of clouds and single $^9$Be$^+$ ions. We discuss prospects for a microfabricated trap to allow coupling of single (anti)protons to laser-cooled $^9$Be$^+$ ions for sympathetic laser cooling to sub-mK temperatures on ms time scales.
description: Presented at the Eighth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, May 12-16, 2019
พฤติกรรมการสึกหรอแบบขูดขีดของชั้นผิวแพร่โดยการ Pack Cementation  บนเหล็กกล้าคาร์บอนต่ำ
Creators: name: สุพร ฤทธิภักดี
Publisher: name: มหาวิทยาลัยอุบลราชธานี
Year: 2013
Subjects: การสึกหรอแบบขูดขีด, เหล็กกล้าคาร์บอนต่ำ, ชั้นผิวแพร่

description: 2, 7, วารสารวิชาการและวิจัย มทร.พระนคร
Regarding the parallel opposed editorial about: 3D printing technology will eventually eliminate the need of purchasing commercial phantoms for clinical medical physics QA procedures
Creators: name: Treutwein, Marius
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 3D printing
subject: 530 Physik
subject: 610 Medizin

description: The letter summarizes some ideas about the parallel opposed editorial "3D printing technology will eventually eliminate the need of purchasing commercial phantoms for clinical medical physics QA procedures", online at the same journal:
https://doi.org/10.1002/acm2.12392
Agroforestry as an ally for the circular bioeconomy
Creators: name: Rois Díaz, M.
name: Den Herder, M.
name: Amaral Paulo, J.
name: Tomás, A.
name: Villada, A.
name: Mosquera-Losada M., R.
Publisher: name: Zenodo
Year: 2019
Subjects: bioplastics
bio-fibres
sustainability
innovations

description: The economic growth in the last decades has been running at the expense of our environment.
Given that all products derived from fossil fuel can be obtained from biomass, agroforestry
reveals itself as one of the best allies for the circular bioeconomy, which can be part of the solution
to address some of the most eminent European and global challenges: climate change,
biodiversity loss, increasing forest fires, the plastic ocean…
Agroforestry is known for the diversification of products that can be obtained in an integrative
way, providing a great variety of raw materials that may be later on transformed into bio-based
products
การประเมินความเป็นพิษของพอลิไซคลิกอะโรมาติกไฮโดรคาร์บอนที่ปนเปื้อนร่วมกันในดินต่อการเจริญในระยะต้นกล้าของพืชเศรษฐกิจวงศ์ถั่ว
Creators: name: ขนิษฐา  สมตระกูล
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2013
Subjects: แอนทราซีน, ฟลูออรีน, ฟลูออแรนทีน, ฟีแนนทรีน

description: 2, 7, วารสารวิชาการและวิจัย มทร.พระนคร
XO-5b: A Transiting Jupiter-sized Planet With A Four Day Period
Creators: name: Burke, Christopher J.
name: McCullough, P. R.
name: Valenti, Jeff A.
name: Long, Doug
name: Johns-Krull, Christopher M.
name: Machalek, P.
name: Janes, Kenneth A.
name: Taylor, B.
name: Fleenor, Michael L.
name: Foote, Cindy N.
name: Gary, Bruce L.
name: Garcia-Melendo, Enrique
name: Gregorio, J.
name: Vanmunster, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The star XO-5 (GSC 02959-00729, V=12.1, G8V) hosts a Jupiter-sized, Rp=1.15+/-0.12 Rjup, transiting extrasolar planet, XO-5b, with an orbital period of P=4.187732+/-0.00002 days. The planet mass (Mp=1.15+/-0.08 Mjup) and surface gravity (gp=22+/-5 m/s^2) are significantly larger than expected by empirical Mp-P and Mp-P-[Fe/H] relationships. However, the deviation from the Mp-P relationship for XO-5b is not large enough to suggest a distinct type of planet as is suggested for GJ 436b, HAT-P-2b, and XO-3b. By coincidence XO-5 overlies the extreme H I plume that emanates from the interacting galaxy pair NGC 2444/NGC 2445 (Arp 143).
description: 10 pages, 9 Figures, Submitted to ApJ
Reasoning about spatial relationships in the primal sketch
Creators: name: Majka, Marc Stephen
Publisher: name: University of British Columbia
Year: 2010

description: The primal sketch describes the magnitude and spatial arrangement of abrupt brightness changes in an image. Many of these changes arise due to surface boundaries in the underlying scene. Spatial relationships present in the primal sketch are used to reason about objects of known spatial structure. Groupings of image features are predicted from scene knowledge. Image features that satisfy predicted relationships are found in the primal sketch. These image features and their relationships are used to form scene descriptions. The interpretation of the symbolic tokens in these descriptions is based on the known compositional and structural properties of objects in the scene domain. Roads and other curvelinear features in aerial imagery are described in terms of their structural and compositional properties. This domain is used as a test case for a spatial reasoning program. The program determines sections of logging roads and their intersections.
$\pi^0$ reconstruction via conversion method in Au+Au at 1.23AGeV with HADES
Creators: name: Behnke, C.
name: Stroth, J.
name: Galatyuk, T.
name: Gumberidze, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
Phase diagram of geometric d-wave superconductor Josephson junctions
Creators: name: Gumann, A.
name: Schopohl, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that a constriction-type Josephson junction realized by an epitactic thin film of a d-wave superconductor with an appropriate boundary geometry exhibits intrinsic phase differences between 0 and pi depending on geometric parameters and temperature. Based on microscopic Eilenberger theory, we provide a general derivation of the relation between the change of the free energy of the junction and the current-phase relation. From the change of the free energy, we calculate phase diagrams and discuss transitions driven by geometric parameters and temperature.
description: 9 pages, 11 figures. Phys. Rev. B, accepted
Yield safe: wheat and pasture production under Pinus Radiata
Creators: name: Mosquera-Losada M., R.
name: Pérez-López, C.
name: Ferreiro-Domínguez N
Publisher: name: Zenodo
Year: 2019
Subjects: agroforestry
silvoarable
silvopasture
Monterrey pine

description: Agroforestry are sustainable land management systems able to increase the production considering
both the woody and herbaceous component. The Woody component economic return
is usually produced when the stand is thinned and in the final harvest. However, the herbaceous
production is usually negatively affected by the shade, but it also depends of the
type of understory that it is grown. Yield SAFE is a biophysical model that allow to compare
different crop production under different tree management options. The aim of this paper was
to compare the herbaceous production of wheat and grassland in a tree less situation and a
silvopasture system with low tree density (600 trees ha-1) developing four different scenarios.
Wheat and grassland were sown at the beginning. Under treeless situation (Figure 1), wheat
produces more than grasslands, but in extreme years with a high leve lof drougth the production
of pasture is reduced in a lower degree or even not reduced. When the herbaceous component
grows up under the tree, wheat diminishes more its productivy than grasslands. As
a mean pasture under tree is able to maintain the 20% of the full sunlight situation grassland
production, while the whea is below 5%. We can conclude that having grassland as part of
the understory of a pinus radiata silvopastoral systems, farmers are able to have more forage
than having wheat. Moreover, the resilience of pasture availability is higher when grassland is
used in silvopastoral systems
Measurement of Similarity in Academic Contexts
Creators: name: Mahian, Omid
name: Treutwein, Marius
name: Estellé, Patrice
name: Wongwises, Somchai
name: Wen, Dongshen
name: Lorenzini, Giulio
name: Dalkilic, Ahmet Selim
name: Yan, Wei-Mon
name: Sahin, Ahmet Z.
Publisher: name: Universität Regensburg
Year: 2017
Subjects: subject: similarity; plagiarism; standards
subject: 020 Bibliotheks- und Informationswissenschaft
subject: 500 Naturwissenschaften

description: We propose some reflections, comments and suggestions about the measurement of similar and matched content in scientific papers and documents, and the need to develop appropriate tools and standards for an ethically fair and equitable treatment of authors.