cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamic time warping distance for message propagation classification in Twitter
Creators: name: Jendoubi, Siwar
name: Martin, Arnaud
name: Liétard, Ludovic
name: Yaghlane, Boutheina Ben
name: Hadji, Hend Ben
Publisher: name: arXiv
Year: 2017
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Social and Information Networks (cs.SI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Social messages classification is a research domain that has attracted the attention of many researchers in these last years. Indeed, the social message is different from ordinary text because it has some special characteristics like its shortness. Then the development of new approaches for the processing of the social message is now essential to make its classification more efficient. In this paper, we are mainly interested in the classification of social messages based on their spreading on online social networks (OSN). We proposed a new distance metric based on the Dynamic Time Warping distance and we use it with the probabilistic and the evidential k Nearest Neighbors (k-NN) classifiers to classify propagation networks (PrNets) of messages. The propagation network is a directed acyclic graph (DAG) that is used to record propagation traces of the message, the traversed links and their types. We tested the proposed metric with the chosen k-NN classifiers on real world propagation traces that were collected from Twitter social network and we got good classification accuracies.
description: 10 pages, 1 figure ECSQARU 2015, Proceedings of the 13th European Conferences on Symbolic and Quantitative Approaches to Reasoning with Uncertainty, 2015
Resonances for random highly oscillatory potentials
Creators: name: Drouot, Alexis
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study discrete spectral quantities associated to Schrödinger operators of the form $-Δ_{\mathbb{R}^d}+V_N$, $d$ odd. The potential $V_N$ models a highly disordered crystal; it varies randomly at scale $N^{-1} \ll 1$. We use perturbation analysis to obtain almost sure convergence of the eigenvalues and scattering resonances of $-Δ_{\mathbb{R}^d}+V_N$ as $N \rightarrow \infty$. We identify a stochastic and a deterministic regime for the speed of convergence. The type of regime depends whether the low frequencies effects due to large deviations overcome the (deterministic) constructive interference between highly oscillatory terms.
description: 37 pages
GASP I: Gas stripping phenomena in galaxies with MUSE
Creators: name: Poggianti, Bianca M.
name: Moretti, Alessia
name: Gullieuszik, Marco
name: Fritz, Jacopo
name: Jaffe, Yara
name: Bettoni, Daniela
name: Fasano, Giovanni
name: Bellhouse, Callum
name: Hau, George
name: Vulcani, Benedetta
name: Biviano, Andrea
name: Omizzolo, Alessandro
name: Paccagnella, Angela
name: D'Onofrio, Mauro
name: Cava, Antonio
name: Sheen, Y. -K.
name: Couch, Warrick
name: Owers, Matt
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: GASP (GAs Stripping Phenomena in galaxies with MUSE) is a new integral-field spectroscopic survey with MUSE at the VLT aiming at studying gas removal processes in galaxies. We present an overview of the survey and show a first example of a galaxy undergoing strong gas stripping. GASP is obtaining deep MUSE data for 114 galaxies at z=0.04-0.07 with stellar masses in the range 10^9.2-10^11.5 M_sun in different environments (galaxy clusters and groups, over more than four orders of magnitude in halo mass). GASP targets galaxies with optical signatures of unilateral debris or tails reminiscent of gas stripping processes ("jellyfish galaxies"), as well as a control sample of disk galaxies with no morphological anomalies. GASP is the only existing Integral Field Unit (IFU) survey covering both the main galaxy body and the outskirts and surroundings, where the IFU data can reveal the presence and the origin of the outer gas. To demonstrate GASP's ability to probe the physics of gas and stars, we show the complete analysis of a textbook case of a "jellyfish" galaxy, JO206. This is a massive galaxy (9 x 10^10 M_sun in a low-mass cluster (sigma ~500 km/s), at a small projected clustercentric radius and a high relative velocity, with >=90kpc-long tentacles of ionized gas stripped away by ram pressure. We present the spatially resolved kinematics and physical properties of gas and stars, and depict the evolutionary history of this galaxy.
description: accepted for publication in ApJ
Semi-analytical model of the contact resistance in two-dimensional semiconductors
Creators: name: Grassi, Roberto
name: Wu, Yanqing
name: Koester, Steven J.
name: Low, Tony
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Contact resistance is a severe performance bottleneck for electronic devices based on two-dimensional layered (2D) semiconductors, whose contacts are Schottky rather than Ohmic. Although there is general consensus that the injection mechanism changes from thermionic to tunneling with gate biasing, existing models tend to oversimplify the transport problem, by neglecting the 2D transport nature and the modulation of the Schottky barrier height, the latter being of particular importance in back-gated devices. In this work, we develop a semi-analytical model based on Bardeen's transfer Hamiltonian approach to describe both effects. Remarkably, our model is able to reproduce several experimental observations of a metallic behavior in the contact resistance, i.e., a decreasing resistance with decreasing temperature, occurring at high gate voltage.
description: main text + supporting information
Transfer Learning for Domain Adaptation in MRI: Application in Brain Lesion Segmentation
Creators: name: Ghafoorian, Mohsen
name: Mehrtash, Alireza
name: Kapur, Tina
name: Karssemeijer, Nico
name: Marchiori, Elena
name: Pesteie, Mehran
name: Guttmann, Charles R. G.
name: de Leeuw, Frank-Erik
name: Tempany, Clare M.
name: van Ginneken, Bram
name: Fedorov, Andriy
name: Abolmaesumi, Purang
name: Platel, Bram
name: Wells, William M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Magnetic Resonance Imaging (MRI) is widely used in routine clinical diagnosis and treatment. However, variations in MRI acquisition protocols result in different appearances of normal and diseased tissue in the images. Convolutional neural networks (CNNs), which have shown to be successful in many medical image analysis tasks, are typically sensitive to the variations in imaging protocols. Therefore, in many cases, networks trained on data acquired with one MRI protocol, do not perform satisfactorily on data acquired with different protocols. This limits the use of models trained with large annotated legacy datasets on a new dataset with a different domain which is often a recurring situation in clinical settings. In this study, we aim to answer the following central questions regarding domain adaptation in medical image analysis: Given a fitted legacy model, 1) How much data from the new domain is required for a decent adaptation of the original network?; and, 2) What portion of the pre-trained model parameters should be retrained given a certain number of the new domain training samples? To address these questions, we conducted extensive experiments in white matter hyperintensity segmentation task. We trained a CNN on legacy MR images of brain and evaluated the performance of the domain-adapted network on the same task with images from a different domain. We then compared the performance of the model to the surrogate scenarios where either the same trained network is used or a new network is trained from scratch on the new dataset.The domain-adapted network tuned only by two training examples achieved a Dice score of 0.63 substantially outperforming a similar network trained on the same set of examples from scratch.
description: 8 pages, 3 figures
In situ accretion of gaseous envelopes on to planetary cores embedded in evolving protoplanetary discs
Creators: name: Coleman, Gavin A. L.
name: Papaloizou, John C. B.
name: Nelson, Richard P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The core accretion hypothesis posits that planets with significant gaseous envelopes accreted them from their protoplanetary discs after the formation of rocky/icy cores. Observations indicate that such exoplanets exist at a broad range of orbital radii, but it is not known whether they accreted their envelopes in situ, or originated elsewhere and migrated to their current locations. We consider the evolution of solid cores embedded in evolving viscous discs that undergo gaseous envelope accretion in situ with orbital radii in the range $0.1-10\rm au$. Additionally, we determine the long-term evolution of the planets that had no runaway gas accretion phase after disc dispersal. We find: (i) Planets with $5 \rm M_{\oplus}$ cores never undergo runaway accretion. The most massive envelope contained $2.8 \rm M_{\oplus}$ with the planet orbiting at $10 \rm au$. (ii) Accretion is more efficient onto $10 \rm M_{\oplus}$ and $15 \rm M_{\oplus}$ cores. For orbital radii $a_{\rm p} \ge 0.5 \rm au$, $15 \rm M_{\oplus}$ cores always experienced runaway gas accretion. For $a_{\rm p} \ge 5 \rm au$, all but one of the $10 \rm M_{\oplus}$ cores experienced runaway gas accretion. No planets experienced runaway growth at $a_{\rm p} = 0.1 \rm au$. (iii) We find that, after disc dispersal, planets with significant gaseous envelopes cool and contract on Gyr time-scales, the contraction time being sensitive to the opacity assumed. Our results indicate that Hot Jupiters with core masses $\lesssim 15 \rm M_{\oplus}$ at $\lesssim 0.1 \rm au$ likely accreted their gaseous envelopes at larger distances and migrated inwards. Consistently with the known exoplanet population, Super-Earths and mini-Neptunes at small radii during the disc lifetime, accrete only modest gaseous envelopes.
description: 15 Pages, 9 Figures. Accepted for publication in MNRAS
Electric- and magnetic-field dependence of the electronic and optical properties of phosphorene quantum dots
Creators: name: Li, L. L.
name: Moldovan, D.
name: Xu, W.
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, black phosphorus quantum dots were fabricated experimentally. Motivated by these experiments, we theoretically investigate the electronic and optical properties of rectangular phosphorene quantum dots (RPQDs) in the presence of an in-plane electric field and a perpendicular magnetic field. The energy spectra and wave functions of RPQDs are obtained numerically using the tight-binding (TB) approach. We find edge states within the band gap of the RPQD which are well separated from the bulk states. In an undoped RPQD and for in-plane polarized light, due to the presence of well-defined edge states, we find three types of optical transitions which are between the bulk states, between the edge and bulk states, and between the edge states. The electric and magnetic fields influence the bulk-to-bulk, edge-to-bulk, and edge-to-edge transitions differently due to the different responses of bulk and edge states to these fields.
description: 14 pages, 7 figures, will appear in Nanotechnology
CTIO, ROSAT HRI and Chandra ACIS Observations of the Archetypical Mixed-Morphology Supernova Remnant W28 (G6.4-0.1)
Creators: name: Pannuti, Thomas G.
name: Rho, Jeonghee
name: Kargaltsev, Oleg
name: Rangelov, Blagoy
name: Kosakowski, Alekzander R.
name: Winkler, P. Frank
name: Keohane, Jonathan W.
name: Hare, Jeremy
name: Ernst, Sonny
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a joint analysis of optical emission-line and X-ray observations of the archetypical Galactic mixed-morphology supernova remnant (MMSNR) W28 (G6.4-0.1). MMSNRs comprise a class of sources whose shell-like radio morphology contrasts with a filled center in X-rays; the origin of these contrasting morphologies remains uncertain. Our CTIO images reveal enhanced [S II] emission relative to H-alpha along the northern and eastern rims of W28. Hydroxyl (OH) masers are detected along these same rims, supporting prior studies suggesting that W28 is interacting with molecular clouds at these locations, as observed for several other MMSNRs. Our ROSAT HRI mosaic of W28 provides almost complete coverage of the SNR. The X-ray and radio emission is generally anti-correlated, except for the luminous northeastern rim, which is prominent in both bands. Our Chandra observation sampled the X-ray-luminous central diffuse emission. Spectra extracted from the bright central peak and from nearby annular regions are best fit with two over-ionized recombining plasma models. We also find that while the X-ray emission from the central peak is dominated by swept-up material, that from the surrounding regions shows evidence for oxygen-rich ejecta, suggesting that W28 was produced by a massive progenitor. We also analyze the X-ray properties of two X-ray sources (CXOU J175857.55-233400.3 and 3XMM J180058.5-232735) projected into the interior of W28 and conclude that neither is a neutron star associated with the SNR. The former is likely to be a foreground cataclysmic variable or a quiescent low-mass X-ray-binary while the latter is likely to be a coronally-active main sequence star.
description: Accepted for publication in Astrophysical Journal, 58 pages (manuscript format), 15 figures
Evidence of Significant Energy Input in the Late Phase of a Solar Flare from NuSTAR X-Ray Observations
Creators: name: Kuhar, Matej
name: Krucker, Säm
name: Hannah, Iain G.
name: Glesener, Lindsay
name: Saint-Hilaire, Pascal
name: Grefenstette, Brian W.
name: Hudson, Hugh S.
name: White, Stephen M.
name: Smith, David M.
name: Marsh, Andrew J.
name: Wright, Paul J.
name: Boggs, Steven E.
name: Christensen, Finn E.
name: Craig, William W.
name: Hailey, Charles J.
name: Harrison, Fiona A.
name: Stern, Daniel
name: Zhang, William W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present observations of the occulted active region AR12222 during the third {\em NuSTAR} solar campaign on 2014 December 11, with concurrent {\em SDO/}AIA and {\em FOXSI-2} sounding rocket observations. The active region produced a medium size solar flare one day before the observations, at $\sim18$UT on 2014 December 10, with the post-flare loops still visible at the time of {\em NuSTAR} observations. The time evolution of the source emission in the {\em SDO/}AIA $335\textrmÅ$ channel reveals the characteristics of an extreme-ultraviolet late phase event, caused by the continuous formation of new post-flare loops that arch higher and higher in the solar corona. The spectral fitting of {\em NuSTAR} observations yields an isothermal source, with temperature $3.8-4.6$ MK, emission measure $0.3-1.8 \times 10^{46}\textrm{ cm}^{-3}$, and density estimated at $2.5-6.0 \times 10^8 \textrm{ cm}^{-3}$. The observed AIA fluxes are consistent with the derived {\em NuSTAR} temperature range, favoring temperature values in the range $4.0-4.3$ MK. By examining the post-flare loops' cooling times and energy content, we estimate that at least 12 sets of post-flare loops were formed and subsequently cooled between the onset of the flare and {\em NuSTAR} observations, with their total thermal energy content an order of magnitude larger than the energy content at flare peak time. This indicates that the standard approach of using only the flare peak time to derive the total thermal energy content of a flare can lead to a large underestimation of its value.
description: Published in ApJ, 8 pages
Teaching and Learning Processes in Inner City Infant Schools, 1992
Creators: name: West, A.
name: Sammons, P.
Publisher: name: UK Data Service
Year: 1998

description: There were five key objectives to this research project :
 to examine the teaching approaches experienced by year 2 pupils in inner city schools since the introduction of the national curriculum and assessment;
 to examine how Teacher Assessments (TAs) and Standard Assessment Tasks (SATs) were being carried out in English, Mathematics and Science, with particular attention being focused on bilingual children and children with special educational needs and where they were not being carried out, to establish why;
 to compare the learning outcomes of pupils in inner-city schools and examine how such outcomes are related to background factors at the level of the individual pupil;
 to investigate whether there is any evidence that particular teaching and learning approaches benefit certain kinds of learning outcomes and/or particular groups of children;
 to examine children's attitudes towards teaching and learning and where possible to relate these to teachers' expectations and pupils' learning outcomes.
A Proof of Milnor conjecture in dimension 3
Creators: name: Pan, Jiayin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We present a proof of Milnor conjecture in dimension 3 based on Cheeger-Colding theory on limit spaces of manifolds with Ricci curvature bounded below. It is different from [Liu] that relies on minimal surface theory.
Field Induced Magnetic States in Holmium Tetraboride
Creators: name: Brunt, Daniel
name: Balakrishnan, Geetha
name: Wildes, Andrew R.
name: Ouladdiaf, Bachir
name: Qureshi, Navid
name: Petrenko, Oleg A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A study of the zero field and field induced magnetic states of the frustrated rare earth tetraboride, HoB$_4$, has been carried out using single crystal neutron diffraction complemented by magnetisation measurements. In zero field, HoB$_4$ shows magnetic phase transitions at $T_{\mathrm{N1}}$ = 7.1 K to an incommensurate state with a propagation vector ($δ$, $δ$, $δ'$), where $δ$ = 0.02 and $δ'$ = 0.43 and at $T_{\mathrm{N2}}$ = 5.7 K to a non-collinear commensurate antiferromagnetic structure. Polarised neutron diffraction measurements in zero field have revealed that the incommensurate reflections, albeit much reduced in intensity, persist down to 1.5 K despite antiferromagnetic ordering at 5.7 K. At lower temperatures, application of a magnetic field along the $c$-axis initially re-establishes the incommensurate phase as the dominant magnetic state in a narrow field range, just prior to HoB$_4$ ordering with an up-up-down ferrimagnetic structure characterised by the $(h,k,\frac{1}{3})$-type reflections between 18 and 24 kOe. This field range is marked by the previously reported $M/M_{\mathrm{sat}}$= $\frac{1}{3}$ magnetisation plateau, which we also see in our magnetisation measurements. The region between 21 and 33 kOe is characterised by the increase in the intensity of the antiferromagnetic reflections, such as (100), the maximum of which coincides with the appearance of the narrow magnetisation plateau with $M/M_{\mathrm{sat}}\approx$ $\frac{3}{5}$. Further increase of the magnetic field results in the stabilisation of a polarised state above 33 kOe, while the incommensurate reflections are clearly present in all fields up to 59 kOe. We propose the $H-T$ phase diagram of HoB$_4$ for the $H \parallel c$ containing both stationary and transitionary magnetic phases which overlap and show significant history dependence.
description: 9 pages, 10 figures, Accepted Physical Review B
A Branching Time Model of CSP
Creators: name: van Glabbeek, Rob
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: I present a branching time model of CSP that is finer than all other models of CSP proposed thus far. It is obtained by taking a semantic equivalence from the linear time - branching time spectrum, namely divergence-preserving coupled similarity, and showing that it is a congruence for the operators of CSP. This equivalence belongs to the bisimulation family of semantic equivalences, in the sense that on transition systems without internal actions it coincides with strong bisimilarity. Nevertheless, enough of the equational laws of CSP remain to obtain a complete axiomatisation for closed, recursion-free terms.
description: Dedicated to Bill Roscoe, on the occasion of his 60th birthday
ISCB Student Council Regional Student Groups: Connecting young computational biologists around the Globe
Creators: name: Eranti, Pradeep
name: Aayush Grover
name: Franzotti, Carla Luciana Padilla
name: Community, On Behalf Of The RSG
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Computational Biology
subject: Education
subject: Workshops
subject: Virtual Seminars
subject: Symposia
subject: ISCB
subject: ISCB Student Council
subject: Regional Student Groups
subject: Early Career Researchers
subject: Networking
subject: Collaboration

description: Poster presented at the ISMBECCB2023 conference.
Generalized stability for abstract homotopy theories
Creators: name: Groth, Moritz
name: Shulman, Mike
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: We show that a derivator is stable if and only if homotopy finite limits and homotopy finite colimits commute, if and only if homotopy finite limit functors have right adjoints, and if and only if homotopy finite colimit functors have left adjoints. These characterizations generalize to an abstract notion of "stability relative to a class of functors", which includes in particular pointedness, semiadditivity, and ordinary stability. To prove them, we develop the theory of derivators enriched over monoidal left derivators and weighted homotopy limits and colimits therein.
description: This article incorporates most of arXiv:1602.07632
Performance Optimization in Two-dimensional Brownian Rotary Ratchet Models
Creators: name: Tutu, Hiroki
name: Ouchi, Katsuya
name: Horita, Takehiko
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: With a model for two-dimensional (2D) Brownian rotary ratchets being capable of producing a net torque under athermal random forces, its optimization for mean angular momentum ($L$), mean angular velocity ($ω$), and efficiency ($η$) is considered. In the model, supposing that such a small ratchet system is placed in a thermal bath, the motion of the rotor in the stator is described by the Langevin dynamics of a particle in a 2D ratchet potential, which consists of a static and a time-dependent interaction between rotor and stator; for the latter, we examine a force [randomly directed d.c. field (RDDF)] for which only the direction is instantaneously updated in a sequence of events in a Poisson process. Because of the chirality of the static part of the potential, it is found that the RDDF causes net rotation while coupling with the thermal fluctuations. Then, to maximize the efficiency of the power consumption of the net rotation, we consider optimizing the static part of the ratchet potential. A crucial point is that the newly designed form of ratchet potential enables us to capture the essential feature of 2D ratchet potentials with two closed curves and allows us to systematically construct an optimization strategy. In this paper, we show a method for maximizing $L$, $ω$, and $η$, its outcome in 2D two-tooth ratchet systems, and a direction of optimization for a three-tooth ratchet system.
Paving the Way Towards Precision Physics in Saturation Studies Through Exclusive Diffractive Light Neutral Vector Meson Production
Creators: name: Boussarie, R.
name: Grabovsky, A. V.
name: Ivanov, D. Yu.
name: Szymanowski, L.
name: Wallon, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform the first next-to-leading order computation of the $γ^{(*)} \to V$ ($ρ, ϕ, ω$) impact factor in the QCD shockwave approach and in the most general kinematics. This paves the way to the very first quantitative study of high-energy nucleon and nucleus saturation beyond the leading order, in various processes to be measured in $ep$, $eA$, $pp$ and $pA$ collisions at existing and future colliders.
description: 7 pages, 1 figure
Visual Communication in the Learning of Science, 1996-1997
Creators: name: Kress, G.
name: Ogborn, J. M.
Publisher: name: UK Data Service
Year: 1999

description: The objectives of this study were:
 to analyse and document the variety of roles of visual communication in school science texts, and in visual images in use In science classrooms, and their influences on science education, taking account of the context of the school within the larger social context and its increasing orientation to visual communication;
 to provide a typology of kinds and functions of visual images, in text books and in classroom practice, based both on an analysis of the images and on empirical investigation of ways in which they are used and the meanings pupils construct from them, taking account of how these interact with pupils' current conceptual understandings;
 to identify rules which form the grammar of visual images used in science, so as to describe their principal resources for making and combining meanings, by constructing systemic grammars analogous to those which account for the working of verbal text;
 to investigate methods of accessing knowledge and understanding in which visual imagery plays an essential role, thus providing better means than currently exist for assessing knowledge expressed visually.
Electronic conduction properties of indium tin oxide: single-particle and many-body transport
Creators: name: Lin, Juhn-Jong
name: Li, Zhi-Qing
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Indium tin oxide (Sn-doped In$_2$O$_{3-δ}$ or ITO) is an interesting and technologically important transparent conducting oxide. This class of material has been extensively studied for decades, with research efforts focusing on the application aspects. The fundamental issues of the electronic conduction properties of ITO from 300 K down to low temperatures have rarely been addressed. Studies of the electrical-transport properties over a wide range of temperature are essential to unraveling the underlying electronic dynamics and microscopic electronic parameters. We show that one can learn rich physics in ITO material, including the semi-classical Boltzmann transport, the quantum-interference electron transport, and the electron-electron interaction effects in the presence of disorder and granularity. To reveal the opportunities that the ITO material provides for fundamental research, we demonstrate a variety of charge transport properties in different forms of ITO structures, including homogeneous polycrystalline films, homogeneous single-crystalline nanowires, and inhomogeneous ultrathin films. We not only address new physics phenomena that arise in ITO but also illustrate the versatility of the stable ITO material forms for potential applications. We emphasize that, microscopically, the rich electronic conduction properties of ITO originate from the inherited free-electron-like energy bandstructure and low-carrier concentration (as compared with that in typical metals) characteristics of this class of material. Furthermore, a low carrier concentration leads to slow electron-phonon relaxation, which causes ($i$) a small residual resistance ratio, ($ii$) a linear electron diffusion thermoelectric power in a wide temperature range 1-300 K, and ($iii$) a weak electron dephasing rate. We focus our discussion on the metallic-like ITO material.
description: 17 figures, 1 table, Topical Review Article
Brief an Johann II Bernoulli
Creators: name: Gessner, Johannes
Publisher: name: [s.n.]
Year: 1777
Subjects: Hirzel, Hans Caspar1725-1803
Lambert, Johann Heinrich1728-1777
Salis-Marschlins, Ulysses von1728-1800

description: von Johannes Gessner
description: Mit rotem Siegel
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Datenimport aus LIDOS / Bernoulli (2004-07-02)
description: Bl. 335-336: "Copia Schreibens H. P. v. Salis an H. Dr. Archiater Hirzel aus Chur dem 13. Dec. 1777" ( biographische Informationen über Lambert)
Brief an Johann II Bernoulli
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1756
Subjects: Bernoulli, Daniel1700-1782
Bernoulli, Johann1744-1807
Bernoulli, Susanna1715-1803
Buxtorf, Johann Ludwig1736-1804
Dupré
Johnson
Keith, George1693-1778
Stuart, Carolina1753-1789
Walkinshaw, Clementina-1802
Stuart, Charles Edward1720-1788

description: von [Jean Louis Cochart] de Granval
description: Mit rotem Siegel
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Druck: Felix Staehelin, Der jüngere Stuartprätendent und sein Aufenthalt in Basel 1754-1756, Basel 1949, pp.56-57
description: Datenimport aus LIDOS / Bernoulli (2004-07-02)
Protokollbuch 4 des Leitenden Bank-Ausschusses bzw. des Bankvorstandes mit Register
Creators: name: Hypothekenbank in Basel
Publisher: name: [s.n.]
Year: 1879

description: Darin: Register
description: Deutsch
description: Verzeichnung=Description=Inventaire 2014/2022 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Sebastian Preher/Martin Lüpold
Protokolle Verwaltungsrat (Originale)
Creators: name: Aluminium-Industrie-Aktiengesellschaft Chippis
Publisher: name: [s.n.]
Year: 1983

description: Deutsch
description: Verzeichnung=Description=Inventaire 24.11.2016 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert Martin Lüpold
On the Generalization of DIRECTFN for Singular Integrals Over Quadrilateral Patches
Creators: name: Tambova, Alexandra
name: Litsarev, Mikhail
name: Guryev, Georgy
name: Polimeridis, Athanasios G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A set of fully numerical algorithms for evaluating the four-dimensional singular integrals arising from Galerkin surface integral equation methods over conforming quadrilateral meshes is presented. This work is an extension of DIRECTFN, which was recently developed for the case of triangular patches, utilizing in a same fashion a series of coordinate transformations together with appropriate integration re-orderings. The resulting formulas consist of sufficiently smooth kernels and exhibit several favorable characteristics when compared with the vast majority of the methods currently available. More specifically, they can be applied---without modifications---to the following challenging cases: 1) weakly and strongly singular kernels, 2) basis and testing functions of arbitrary order, 3) planar and curvilinear patches, 4) problem-specific Green functions (e.g. expressed in spectral integral form), 5) spectral convergence to machine precision. Finally, we show that the overall performance of the fully numerical schemes can be further improved by a judicious choice of the integration order for each dimension.
description: 10 pages, 12 figures
Collisions and drag in debris discs with eccentric parent belts
Creators: name: Löhne, T.
name: Krivov, A. V.
name: Kirchschlager, F.
name: Sende, J. A.
name: Wolf, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: High-resolution images of circumstellar debris discs reveal off-centred rings that indicate past or ongoing perturbation, possibly caused by secular gravitational interaction with unseen stellar or substellar companions. The purely dynamical aspects of this departure from radial symmetry are well understood. However, the observed dust is subject to additional forces and effects, most notably collisions and drag. Aims: To complement the studies of dynamics, we therefore aim to understand how new asymmetries are created by the addition of collisional evolution and drag forces, and existing ones strengthened or overridden. Methods: We augmented our existing numerical code "Analysis of Collisional Evolution" (ACE) by an azimuthal dimension, the longitude of periapse. A set of fiducial discs with global eccentricities ranging from 0 to 0.4 is evolved over giga-year timescales. Size distribution and spatial variation of dust are analysed and interpreted. The basic impact of belt eccentricity on spectral energy distributions (SEDs) and images is discussed. Results: We find features imposed on characteristic timescales. First, radiation pressure defines size cutoffs that differ between periapse and apoapse, resulting in an asymmetric halo. The differences in size distribution make the observable asymmetry of the halo depend on wavelength. Second, collisional equilibrium prefers smaller grains on the apastron side of the parent belt, reducing the effect of pericentre glow and the overall asymmetry. Third, Poynting-Robertson drag fills the region interior to an eccentric belt such that the apastron side is more tenuous. Interpretation and prediction of the appearance in scattered light is problematic when spatial and size distribution are coupled.
description: Accepted for publication in A&A, 14 pages, 16 figures
Ultra-broadband quantum cascade laser operating from 1.88 to 3.82 THz
Creators: name: Rösch, Markus
name: Beck, Mattias
name: Süess, Martin J.
name: Bachmann, Dominic
name: Unterrainer, Karl
name: Faist, Jérôme
name: Scalari, Giacomo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on a heterogeneous active region design for terahertz quantum cascade laser based frequency combs. Dynamic range, spectral bandwidth as well as output power have been significantly improved with respect to previous designs. When operating individually the lasers act as a frequency comb up to a spectral bandwidth of 1.1 THz, while in a dispersed regime a bandwidth up to 1.94 THz at a center frequency of 3 THz can be reached. A self-detected dual-comb setup has been used to verify the frequency comb nature of the lasers.
Brief an Johann Screta v. Zavorziz
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1628

description: von Heinrich Screta von Zavorziz
description: Lateinisch
description: Verzeichnung=Description=Inventaire August 2013 Vollständige Rekatalogisierung nach Briefkatalog
description: Digitalisierung=Digitization=Numérisation 05.07.2015 TIFF
Arithmetic intersection on GSpin Rapoport-Zink spaces
Creators: name: Li, Chao
name: Zhu, Yihang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G18, 14G17, secondary 22E55

description: We prove an explicit formula for the arithmetic intersection number of diagonal cycles on GSpin Rapoport-Zink spaces in the minuscule case. This is a local problem arising from the arithmetic Gan-Gross-Prasad conjecture for orthogonal Shimura varieties. Our formula can be viewed as an orthogonal counterpart of the arithmetic-geometric side of the arithmetic fundamental lemma proved by Rapoport-Terstiege-Zhang in the minuscule case.
description: Comments welcome
LSDCat: Detection and cataloguing of emission-line sources in integral-field spectroscopy datacubes
Creators: name: Herenz, Edmund Christian
name: Wisotzki, Lutz
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a robust, efficient, and user-friendly algorithm for detecting faint emission-line sources in large integral-field spectroscopic datacubes together with the public release of the software package LSDCat (Line Source Detection and Cataloguing). LSDCat uses a 3-dimensional matched filter approach, combined with thresholding in signal-to-noise, to build a catalogue of individual line detections. In a second pass, the detected lines are grouped into distinct objects, and positions, spatial extents, and fluxes of the detected lines are determined. LSDCat requires only a small number of input parameters, and we provide guidelines for choosing appropriate values. The software is coded in Python and capable to process very large datacubes in a short time. We verify the implementation with a source insertion and recovery experiment utilising a real datacube taken with the MUSE instrument at the ESO Very Large Telescope.
description: 14 pages. Accepted for publication in Astronomy & Astrophysics. The LSDCat software is available at https://bitbucket.org/Knusper2000/lsdcat, v2 corrected typos and language editing
MANUAL DE PROCEDIMENTOS OPERACIONAIS PADRÃO – CAPS ALFENAS: Equipe de Enfermagem
Creators: name: Pinto, Fernanda Manzini
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Manual desenvolvido pela iniciativa da equipe de enfermagem da Unidade do CAPS II de Alfenas-MG, gestão 2023, a partir de readaptações e atualizações do “Manual de Normas e Rotinas de Enfermagem” de 2021, cuja supervisão e validação foi realizada pela Profa. Dra. Sueli de Carvalho Vilela, na Universidade Federal de Alfenas com a participação da Enfermeira Mestre Valdete da Silva Custódio e acadêmica Stephanie Carolina Francisco.Elaborado por: Mª. Valdete da Silva Custódio (Enfermeira RT da Unidade do CAPS II de Alfenas-MG), Vilnara Domingos Reis (Coordenadora da Unidade do CAPS II de Alfenas-MG), Fernanda Manzini Pinto (Acadêmica de Enfermagem da UNIFAL-MG)
Binary Star Formation and the Outflows from their Discs
Creators: name: Kuruwita, Rajika
name: Federrath, Christoph
name: Ireland, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We carry out magnetohydrodynamical simulations with FLASH of the formation of a single, a tight binary ($a\sim$2.5 AU) and a wide binary star ($a\sim$45 AU). We study the outflows and jets from these systems to understand the contributions the circumstellar and circumbinary discs have on the efficiency and morphology of the outflow. In the single star and tight binary case we obtain a single pair of jets launched from the system, while in the wide binary case two pairs of jets are observed. This implies that in the tight binary case the contribution of the circumbinary disc on the outflow is greater than that in the wide binary case. We also find that the single star case is the most efficient at transporting mass, linear and angular momentum from the system, while the wide binary case is less efficient ($\sim$50$\%, \sim$33$\%, \sim$42$\%$ of the respective quantities in the single star case). The tight binary's efficiency falls between the other two cases ($\sim$71$\%, \sim$66$\%, \sim$87$\%$ of the respective quantities in the single star case). By studying the magnetic field structure we deduce that the outflows in the single star and tight binary star case are magnetocentrifugally driven, whereas in the wide binary star case the outflows are driven by a magnetic pressure gradient.
description: Accepted for publication in MNRAS. 17 pages, 15 figures
Exciton states in a circular graphene quantum dot: magnetic field induced intravalley to intervalley transition
Creators: name: Li, L. L.
name: Zarenia, M.
name: Xu, W.
name: Dong, H. M.
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetic-field dependence of the energy spectrum, wave function, binding energy and oscillator strength of exciton states confined in a circular graphene quantum dot (CGQD) are obtained within the configuration interaction (CI) method. We predict that: (1) excitonic effects are very significant in the CGQD as a consequence of a combination of geometric confinement, magnetic confinement and reduced screening; (2) two types of excitons (intravalley and intervalley excitons) are present in the CGQD because of the valley degree of freedom in graphene; (3) the intravalley and intervalley exciton states display different magnetic-field dependencies due to the different electron-hole symmetries of the single-particle energy spectra; (4) with increasing magnetic field, the exciton ground state in the CGQD undergoes an intravalley to intervalley transition accompanied by a change of angular momentum; (5) the exciton binding energy does not increase monotonically with the magnetic field due to the competition between geometric and magnetic confinements; and (6) the optical transitions of the intervalley and intravalley excitons can be tuned by the magnetic field and valley-dependent excitonic transitions can be realized in CGQD.
description: 10 pages, 8 figures, to appear in Phys. Rev. B
Unveiling the role of Co-O-Mg bond in magnetic anisotropy of Pt/Co/MgO using atomically controlled deposition and in-situ electrical measurement
Creators: name: Yang, Yumeng
name: Yuan, Jiaren
name: Qi, Long
name: Wang, Ying
name: Xu, Yanjun
name: Wang, Xiaowei
name: Feng, Yuanping
name: Xu, Baoxi
name: Shen, Lei
name: Wu, Yihong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Despite the crucial role of interfacial perpendicular magnetic anisotropy in Co(Fe)/MgO based magnetic tunnel junction, the underlying mechanism is still being debated. Here, we report an anatomical study of oxygen and Mg effect on Pt/Co bilayers through repeated in-situ anomalous Hall effect measurements, controlled oxygen exposure and Mg deposition in an ultrahigh vacuum system. We found that chemisorbed oxygen not only quenches the effective magnetic moment of the Co surface layer, but also softens its magnetic anisotropy. However, a subsequent Mg dusting on the oxygen pre-exposed Pt/Co surface can recover the magnetic anisotropy. The ab initio calculations on the exchange splitting and orbital hybridization near the Fermi level give a clear physical explanation of the experimental observations. Our results suggest that Co(Fe)-O-M bond plays a more important role than the widely perceived Co(Fe)-O bond does in realizing interfacial perpendicular magnetic anisotropy in Co(Fe)/MgO heterostructures.
Time Reversal Invariance of quantum kinetic equations: Nonequilibrium Green Functions Formalism
Creators: name: Scharnke, Miriam
name: Schlünzen, Niclas
name: Bonitz, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time reversal symmetry is a fundamental property of many quantum mechanical systems. The relation between statistical physics and time reversal is subtle and not all statistical theories conserve this particular symmetry, most notably hydrodynamic equations and kinetic equations such as the Boltzmann equation. In this article it is shown analytically that quantum kinetic generalizations of the Boltzmann equation that are derived using the nonequilibrium Green functions formalism as well as all approximations that stem from $Φ$-derivable selfenergies are time reversal invariant.
Pattern formation in a two-dimensional two-species diffusion model with anisotropic nonlinear diffusivities: a lattice approach
Creators: name: Tarasevich, Yuri Yu.
name: Laptev, Valeri V.
name: Burmistrov, Andrei S.
name: Lebovka, Nikolai I
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Diffusion in a two-species 2D system has been simulated using a lattice approach. Rodlike particles were considered as linear $k$-mers of two mutually perpendicular orientations ($k_x$- and $k_y$-mers) on a square lattice. These $k_x$- and $k_y$-mers were treated as species of two kinds. A random sequential adsorption model was used to produce an initial homogeneous distribution of $k$-mers. The concentration of $k$-mers, $p$, was varied in the range from 0.1 to the jamming concentration, $p_j$. By means of the Monte Carlo technique, translational diffusion of the $k$-mers was simulated as a random walk, while rotational diffusion was ignored. We demonstrated that the diffusion coefficients are strongly anisotropic and nonlinearly concentration-dependent. For sufficiently large concentrations (packing densities) and $k \geq 6$, the system tends toward a well-organized steady state. Boundary conditions (BC) predetermine the final state of the system. When periodic BCs are applied along both directions of the square lattice, the system tends to a steady state in the form of diagonal stripes. The formation of stripe domains takes longer time the larger the lattice size, and is observed only for concentrations above a particular critical value. When insulating (zero flux) BCs are applied along both directions of the square lattice, each kind of $k$-mer tries to completely occupy a half of the lattice divided by a diagonal, e.g., $k_x$-mers locate in the upper left corner, while the $k_y$-mers are situated in the lower right corner ("yin-yang" pattern). From time to time, regions built of $k_x$- and $k_y$-mers exchange their locations through irregular patterns. When mixed BCs are used (periodic BCs are applied along one direction whereas insulating BCs are applied along the other one), the system still tends to form the stripes, but they are unstable and change their spatial orientation.
description: 18 pages, 9 figures, 24 references
Loschmidt Echo in Many-Body Localized Phase
Creators: name: Serbyn, Maksym
name: Abanin, Dmitry A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Loschmidt echo, defined as the overlap between quantum wave function evolved with different Hamiltonians, quantifies the sensitivity of quantum dynamics to perturbations and is often used as a probe of quantum chaos. In this work we consider the behavior of the Loschmidt echo in the many body localized phase, which is characterized by emergent local integrals of motion, and provides a generic example of non-ergodic dynamics. We demonstrate that the fluctuations of the Loschmidt echo decay as a power law in time in the many-body localized phase, in contrast to the exponential decay in few-body ergodic systems. We consider the spin-echo generalization of the Loschmidt echo, and argue that the corresponding correlation function saturates to a finite value in localized systems. Slow, power-law decay of fluctuations of such spin-echo-type overlap is related to the operator spreading and is present only in the many-body localized phase, but not in a non-interacting Anderson insulator. While most of the previously considered probes of dephasing dynamics could be understood by approximating physical spin operators with local integrals of motion, the Loschmidt echo and its generalizations crucially depend on the full expansion of the physical operators via local integrals of motion operators, as well as operators which flip local integrals of motion. Hence, these probes allow to get insights into the relation between physical operators and local integrals of motion, and access the operator spreading in the many-body localized phase.
description: 10 pages, 7 figures