cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars
Creators: name: Sedrakian, Armen
name: Weber, Fridolin
name: Li, Jia-Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We examine the possibility that the light companion in the highly asymmetric binary compact object coalescence event GW190814 is a hypernuclear star. We use density functional theory with functionals that have been tuned to the properties of $Λ$ hypernuclei as well as astrophysical constraints placed by the masses of the most massive millisecond pulsars, the mass-radius range inferred from the NICER experiment, and the binary neutron star merger event GW170817. We compute general-relativistic static and maximally rotating Keplerian configurations of purely nucleonic and hypernuclear stars. We find that while nucleonic stars are broadly consistent with a neutron star being involved in GW190814, this would imply no new degrees of freedom in the dense matter up to 6.5 times the nuclear saturation density. Allowing for hyperonization of dense matter, we find that the maximal masses of hypernuclear stars, even for maximal rapidly rotating configurations, are inconsistent with a stellar nature interpretation of the light companion in GW190814, implying that this event involved two black holes rather than a neutron star and a black hole.
description: 5 pages, 4 figures; v2: minor editorial improvements, matches published version
Visual and verbal coding strategies in children with specific language impairment
Creators: name: Conner, Skye A.
Publisher: name: University of British Columbia
Year: 2009

description: A substantial body of research points to the possibility that deficits in verbal memory processes may contribute to the atypical language development of children with specific language impairment (SLI). The current study used a short-term memory task to explore children's use of visual and verbal coding strategies to remember pictures of objects. Participants were 39 children, 13 children with SLI and two normal language control groups of 13 children each, one matched by age (AM) and one by language level (LM) with the SLI children. Subjects performed a memory task in which they were briefly presented with a target picture and then selected its match from an array of three pictures in which the target was either an identical match (identity condition), a basic level category match (category condition), or a visual match (shape condition). Children with SLI showed a pattern of a larger reaction time difference between the category and identity conditions than their AM peers. If it is true that the category condition rewards verbal coding, then relatively slower performance on this condition suggests that the SLI children may not be relying on verbal codes to the same degree as the AM children. A deficit in using verbal codes could explain the learning difficulties experienced by children with language impairment, both in the domain of language and more generally.
Política económica y desarrollo del sistema financiero peruano, parte I: diagnóstico
Creators: name: Caceres Valderrama, Armando
name: Nagamine Akamine, Javier
name: Caceres Valderrama, Armando
name: Nagamine Akamine, Javier
Publisher: name: Unknown
Year: 1991
Subjects: subject: Financial Economics
subject: Sistemas bancarios
subject: Mercado financiero
subject: Politica economica
subject: Banking systems
subject: Financial market
subject: Economic policy
subject: Peru

description: Este documento realiza un diagnóstico de la situación del sistema financiero peruano a principios de 1990. La principal problemática que se observa es la pérdida de importancia del sistema financiero en el proceso ahorro-inversión en el Perú que se agudiza a partir de 1988. Este es un primer paso para la elaboración de una propuesta de reforma del sistema financiero.
Additional file 1 of Reference values and sex differences in absolute and relative kidney size. A Swiss autopsy study
Creators: name: Kalucki, Sabrina Addidou
name: Lardi, Christelle
name: Garessus, Jonas
name: Kfoury, Alain
name: Grabherr, Silke
name: Burnier, Michel
name: Pruijm, Menno
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Marine Biology

description: Additional file 1. Centile curves of renal weight taking into account depletion status of the kidneys.
Tell me what this is: Few-Shot Incremental Object Learning by a Robot
Creators: name: Ayub, Ali
name: Wagner, Alan R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: For many applications, robots will need to be incrementally trained to recognize the specific objects needed for an application. This paper presents a practical system for incrementally training a robot to recognize different object categories using only a small set of visual examples provided by a human. The paper uses a recently developed state-of-the-art method for few-shot incremental learning of objects. After learning the object classes incrementally, the robot performs a table cleaning task organizing objects into categories specified by the human. We also demonstrate the system's ability to learn arrangements of objects and predict missing or incorrectly placed objects. Experimental evaluations demonstrate that our approach achieves nearly the same performance as a system trained with all examples at one time (batch training), which constitutes a theoretical upper bound.
description: Accepted at IEEE IROS 2020
Vacuum and thermal fluctuation energies of a soliton at finite temperatures
Creators: name: Shu, Song
name: Li, Xiaogang
name: Li, Jia-Rong
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have studied the vacuum and thermal fluctuation energies of a soliton at finite temperatures. First the vacuum energy coming from the Dirac sea is calculated by a summation of the discrete and continuum energy spectrum of the Dirac equation in the background field of a soliton. And all the divergences are removed by the same renormalization scheme at zero temperature. Then the vacuum energy and thermal fluctuation energy at finite temperatures in a temperature dependent soliton background are calculated. And the numerical results are analyzed and discussed.
description: 13 pages, 7 figures; some paragraphs and references are added
Additional file 8 of Examining the relationship between maternal body size, gestational glucose tolerance status, mode of delivery and ethnicity on human milk microbiota at three months post-partum
Creators: name: LeMay-Nedjelski, Lauren
name: Butcher, James
name: Ley, Sylvia H.
name: Asbury, Michelle R.
name: Hanley, Anthony J.
name: Kiss, Alex
name: Unger, Sharon
name: Copeland, Julia K.
name: Wang, Pauline W.
name: Zinman, Bernard
name: Stintzi, Alain
name: O’Connor, Deborah L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 8: Table S6. Associations between maternal characteristics and the top 5 phyla and top 10 genera: Results where pairwise comparisons were statistically significant but group effects were not. Separate Poisson regression models were run for pre-pregnancy BMI and 3-month post-partum BMI, while adjusting for maternal glucose tolerance status, mode of delivery, DNA extraction batch, and PCR sequencing batch. Statistically significant pairwise findings shown only (p
Política económica y rentabilidad en el sector minero: 1989-1990
Creators: name: Pasco-Font Quevedo, Alberto
name: Pasco-Font Quevedo, Alberto
Publisher: name: Unknown
Year: 1991
Subjects: subject: Resource /Energy Economics and Policy
subject: Mineria
subject: Politica economica
subject: Mining
subject: Economic policy
subject: Peru

description: Este documento recoge los resultados de una investigación sobre política económica y rentabilidad en el sector minero. Presenta la metodología para la construcción de un índice de tipo de cambio real minero-indicador que resume los efectos de la política económica y de los precios internacionales sobre la rentabilidad minera- y comenta su evolución durante los últimos cinco años.
Additional file 9 of Examining the relationship between maternal body size, gestational glucose tolerance status, mode of delivery and ethnicity on human milk microbiota at three months post-partum
Creators: name: LeMay-Nedjelski, Lauren
name: Butcher, James
name: Ley, Sylvia H.
name: Asbury, Michelle R.
name: Hanley, Anthony J.
name: Kiss, Alex
name: Unger, Sharon
name: Copeland, Julia K.
name: Wang, Pauline W.
name: Zinman, Bernard
name: Stintzi, Alain
name: O’Connor, Deborah L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 9: Table S7. Associations between ethnicity and the top 5 phyla and top 10 genera: Results where pairwise comparisons were statistically significant but group effects were not. Ethnicity was investigated for all taxa and models were adjusted for DNA extraction and PCR sequencing batch effects. Group effect thresholds [p ≤ 0.022 for phylum, p ≤ 0.017 for genus] were not significant, however, pairwise comparisons were (p
title: Automatische Klassifizierung medizinischer Literatur durch Analyse verfügbarer Notationen
Creators: name: Lüschow, Andreas
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: In den letzten Jahren ist, nicht zuletzt aufgrund der schnellen und einfachen Verfügbarkeit von Daten und Informationen, ein Anstieg an veröffentlichter Literatur zu beobachten. Bibliotheken stehen vor der Herausforderung, diese Ressourcen zu erschließen und damit verfügbar zu machen. Ein Teilaspekt ist hierbei die Klassifizierung. Die Arbeit untersucht Voraussetzungen und Möglichkeiten der automatischen Klassifizierung am Beispiel medizinischer Literatur. Der erste, theoretische Teil beinhaltet die Beschreibung der Grundlagen der Inhaltserschließung, des Data Mining und der automatischen Klassifizierung sowie eine umfassende Übersicht über den aktuellen Forschungsstand in diesem Bereich. Im zweiten Teil wird die Auswahl, Aufbereitung und Analyse eines aus Katalogdatensätzen der Bibliothek der Medizinischen Hochschule Hannover bestehenden Datenbestandes erläutert. Die Anwendung von Verfahren des maschinellen Lernens zur Klassifizierung bibliographischer Datensätze wird am Beispiel des Algorithmus k-nearest-neighbours verdeutlicht. Hierbei lässt sich eine korrekte Klassifizierung von rund 58 % der Dokumente erreichen. Abschließend werden Optimierungsansätze (z.B. semi-automatische Verfahren) und Herausforderungen automatischer Klassifizierungsverfahren (z.B. uneinheitlich erschlossene Datensätze oder ungleiche Verteilung der Klassen einer Systematik in den Dokumenten) aufgezeigt.
Monte-Carlo generator for e+e- annihilation into lepton and hadron pairs with precise radiative corrections
Creators: name: Arbuzov, A. B.
name: Fedotovich, G. V.
name: Ignatov, F. V.
name: Kuraev, E. A.
name: Sibidanov, A. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, various cross sections of e+e- annihilation into hadrons were accurately measured in the energy range from 0.37 to 1.39 GeV with the CMD-2 detector at the VEPP-2M collider. In the pi+pi- channel a systematic uncertainty of 0.6% has been achieved. A Monte-Carlo Generator Photon Jets (MCGPJ) was developed to simulate events of the Bhabha scattering as well as production of two charged pions, kaons and muons. Based on the formalism of Structure Functions, the leading logarithmic contributions related to the emission of photon jets in the collinear region are incorporated into the MC generator. Radiative corrections (RC) in the first order of alpha are accounted for exactly. The theoretical precision of the cross sections with RC is estimated to be better than 0.2%. Numerous tests of the program as well as comparison with other MC generators and CMD-2 experimental data are presented.
description: LaTeX, 23 pages with 18 figures
The Nonlinear Schrödinger Equation on the Interval
Creators: name: Fokas, A. S.
name: Its, A. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Let $q(x,t)$ satisfy the Dirichlet initial-boundary value problem for the nonlinear Schrödinger equation on the finite interval, $0 < x < L$, with $q_{0}(x) = q(x,0)$, $g_{0}(t) = q(0,t)$, $f_{0}(t) = q(L,t)$. Let $g_{1}(t)$ and $f_{1}(t)$ denote the {\it unknown} boundary values $q_{x}(0,t)$ and $q_{x}(L,t)$, respectively. We first show that these unknown functions can be expressed in terms of the given initial and boundary conditions through the solution of a system of nonlinear ODEs. Although the question of the global existence of solution of this system remains open, it appears that this is the first time in the literature that such a characterization is explicitely described for a nonlinear evolution PDE defined on the interval; this result is the extension of the analogous result of [4] and [6] from the half-line to the interval. We then show that $q(x,t)$ can be expressed in terms of the solution of a $2\times 2$ matrix Riemann-Hilbert problem formulated in the complex $k$ - plane. This problem has explicit $(x,t)$ dependence in the form $\exp[2ikx + 4ik^2t]$, and it has jumps across the real and imaginary axes. The relevant jump matrices are explicitely given in terms of the spectral data $\{a(k), b(k)\}$, $\{A(k), B(k)\}$, and $\{\A(k), \B(k)\}$, which in turn are defined in terms of $q_{0}(x)$, $\{g_{0}(t), g_{1}(t)\}$, and $\{f_{0}(t), f_{1}(t)\}$, espectively.
title: Usability-Studie zur Website der Bibliothek der Medizinischen Hochschule Hannover
Creators: name: Illmer, Alisa
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Das Ziel der Bachelorarbeit ist es, die Webseite einer wissenschaftlichen Bibliothek hinsichtlich der Benutzerfreundlichkeit zu testen und die Ergebnisse als Handlungsempfehlung an die Bibliothek aufzuarbeiten. Die Studie wird mit zwei Methoden zur Evaluation der Web Usability durchgeführt, die zunächst definiert und erläutert werden. Die Methoden umfassen die Analyse des aktuellen Zustands der Usability der Webseite mit dem Leitfaden BibEval, sowie die Methode des lauten Denkens mit Vertretern aus verschiedenen Nutzergruppen der Bibliothek als Testpersonen. Aus den erhobenen Daten ergibt sich, dass die Webseite in Teilbereichen, wie der Navigation und der Seitengestaltung kleine bis schwere Usability-Probleme aufweist. Die aufgetretenen Kritikpunkte werden zusammen-fassend beschrieben. Anschließend werden Lösungsvorschläge gegeben. Die Arbeit ist vorwiegend für die Mitarbeiter der Bibliothek von Interesse, deren Webseite evaluiert wird. Andere Bibliothekare, die vorhaben die Benutzerfreundlichkeit ihrer Webseite zu testen, können sich in dieser Arbeit Anregungen holen.
Multi-Generational Star Formation in L1551
Creators: name: Moriarty-Schieven, Gerald H.
name: Johnstone, Doug
name: Bally, John
name: Jenness, Tim
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The L1551 molecular cloud contains two small clusters of Class 0 and I protostars, as well as a halo of more evolved Class II and III YSOs, indicating a current and at least one past burst of star formation. We present here new, sensitive maps of 850 and 450 um dust emission covering most of the L1551 cloud, new CO J=2-1 data of the molecular cloud, and a new, deep, optical image of [SII] emission. No new Class 0/I YSOs were detected. Compact sub-millimetre emitters are concentrated in two sub-clusters: IRS5 and L1551NE, and the HL~Tauri group. Both stellar groups show significant extended emission and outflow/jet activity. A jet, terminating at HH 265 and with a very weak associated molecular outflow, may originate from LkHa 358, or from a binary companion to another member of the HL Tauri group. Several Herbig Haro objects associated with IRS5/NE were clearly detected in the sub-mm, as were faint ridges of emission tracing outflow cavity walls. We confirm a large-scale molecular outflow originating from NE parallel to that from IRS5, and suggest that the "hollow shell" morphology is more likely due to two interacting outflows. We confirm the presence of a prestellar core (L1551-MC) of mass 2-3 Mo north-west of IRS5. The next generation cluster may be forming in this core. The L1551 cloud appears cometary in morphology, and appears to be illuminated and eroded from the direction of Orion, perhaps explaining the multiple episodes of star formation in this cloud. The full paper (including figures) can be downloaded at http://www.jach.hawaii.edu/~gms/l1551/l1551-apj641.pdf, or viewed at http://www.jach.hawaii.edu/~gms/l1551/.
description: Accepted for publication in The Astrophysical Journal, April 2006 (vol. 641). 27 pages, 17 figures
On the Conductivity of a Magnetoactive Turbulent Plasma
Creators: name: Chkhetiani, Otto G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The problem of determining the effective conductivity tensor of a magnetoactive turbulent plasma is considered in the approximation of isolated particles. Additional gyrotropicterms are shown to appear in the conductivity tensor in the presence of mean, nonzero magnetic helicity. The dispersion of propagating electro- magnetic waves changes, additional modes and additional rotation of the polarization plane appear, and the waves can be amplified. The properties acquired by plasma with helicity are similar those observed in chiral and bianisotropic electrodynamic media.
description: 15 pages
Zur Textüberlieferung der Chronik von Arbela
Creators: name: Assfalg, Julius
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 50 (1966): Oriens christianus, Band 50
Relaciones financieras internacionales y estabilización: una propuesta para el manejo de la deuda externa peruana
Creators: name: Larrain, Felipe
name: Sachs, Jeffrey
name: Larrain, Felipe
name: Sachs, Jeffrey
Publisher: name: Unknown
Year: 1991
Subjects: subject: Financial Economics
subject: International Relations/Trade
subject: Deuda externa
subject: External debt
subject: Peru

description: El documento plantea estrategia para el tratamiento progresivo de la deuda externa, sustentada en el reconocimiento de que, en las actuales condiciones, la deuda peruana con el sistema financiero internacional es impagable, por lo cual resulta imprescindible reducirla a un 50% de su valor nominal. La propuesta está enmarcada en el programa de estabilización elaborado en GRADE por un equipo de profesionales que incluyó a los autores.
Stochastic modelling of star-formation histories II: star-formation variability from molecular clouds and gas inflow
Creators: name: Tacchella, Sandro
name: Forbes, John C.
name: Caplar, Neven
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A key uncertainty in galaxy evolution is the physics regulating star formation, ranging from small-scale processes related to the life-cycle of molecular clouds within galaxies to large-scale processes such as gas accretion onto galaxies. We study the imprint of such processes on the time-variability of star formation with an analytical approach tracking the gas mass of galaxies ("regulator model"). Specifically, we quantify the strength of the fluctuation in the star-formation rate (SFR) on different timescales, i.e. the power spectral density (PSD) of the star-formation history, and connect it to gas inflow and the life-cycle of molecular clouds. We show that in the general case the PSD of the SFR has three breaks, corresponding to the correlation time of the inflow rate, the equilibrium timescale of the gas reservoir of the galaxy, and the average lifetime of individual molecular clouds. On long and intermediate timescales (relative to the dynamical timescale of the galaxy), the PSD is typically set by the variability of the inflow rate and the interplay between outflows and gas depletion. On short timescales, the PSD shows an additional component related to the life-cycle of molecular clouds, which can be described by a damped random walk with a power-law slope of $β\approx2$ at high frequencies with a break near the average cloud lifetime. We discuss star-formation "burstiness" in a wide range of galaxy regimes, study the evolution of galaxies about the main sequence ridgeline, and explore the applicability of our method for understanding the star-formation process on cloud-scale from galaxy-integrated measurements.
description: Accepted to MNRAS, 26 pages with 12 figures (+ appendix)
Frustrated two-level impurities in two-dimensional antiferromagnets
Creators: name: Syromyatnikov, A. V.
name: Maleyev, S. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dynamical properties of the impurity spin-$\frac12$ in 2D and quasi-2D Heisenberg antiferromagnets (AFs) at $T\ge0$ are discussed. The specific case of an impurity coupled symmetrically to two neighboring host spins is considered. The specific feature of this problem is that the defect is degenerate (frustrated) being located in zero molecular field. It is shown that this problem can be described by spin-boson model without tunneling term and with a more complex interaction. We demonstrate that the effect of the host system on the defect is completely described by the spectral function. It is found within the spin-wave approximation that for not too small $ω$ the spectral function is proportional to $ω^2/J^3$, where $J$ is the exchange constant between the host spins. The defect dynamical susceptibility is derived using Abrikosov's pseudofermion technique and diagrammatic expansion. The calculations are performed within the fourth order of the dimensionless coupling parameter $f$. It is found that transverse impurity susceptibility $χ_\perp(ω)$ has a Lorenz peak with the width proportional to $f^4J(T/J)^3$ which disappears at T=0, and a non-resonant term. The later term diverges logarithmically as $ω,T \to 0$. The static susceptibility $χ(0)$ has the free-spin-like contribution $1/(4T)$, and a logarithmic correction proportional to $f^2\ln(J/T)$. The influence of finite concentration of the defects $n$ on the low-temperature properties of AF is also investigated. A logarithmic correction to spin-wave velocity of the form $nf^4\ln|J/ω|$ and an anomalous damping of spin waves proportional to $nf^4|ω|$ are obtained.
description: 22 pages, 6 figures
Understanding (eco) tourism from the bottom-up : a case study of Tofino, Clayoquot Sound, in British Columbia
Creators: name: De Andrade, Annemarie
Publisher: name: University of British Columbia
Year: 2009

description: The concepts of ecotourism and sustainable tourism at the local level refer to the processes within which tourism can foster and contribute to sustainable development at tourist destinations. This thesis argues that in order for destinations to move towards sustainability, tourism must be properly planned and managed towards this goal. Assuming that tourism is a community-industry, planning for tourism must incorporate the perspectives of all tourism stakeholders, including community residents who share their space with tourists and are also part of the tourism product. Using a mixed-methodology that combined 11 unstructured interviews with a 117-respondent survey, this study reports the main constraints for the development of a sustainable tourist destination. It also brings to light the perspectives of the local community on tourism development. I conclude that for the destination to move towards sustainability, barriers must be acknowledged and overcome. Some suggestions are made in this regard.
Moduli Spaces for D-branes at the Tip of a Cone
Creators: name: Bergman, Aaron
name: Proudfoot, Nicholas J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: For physicists: We show that the quiver gauge theory derived from a Calabi-Yau cone via an exceptional collection of line bundles on the base has the original cone as a component of its classical moduli space. For mathematicians: We use data from the derived category of sheaves on a Fano surface to construct a quiver, and show that its moduli space of representations has a component which is isomorphic to the anticanonical cone over the surface.
description: 8 pages
Lie point symmetries of near-horizon geometry equation
Creators: name: Buk, Eryk
name: Lewandowski, Jerzy
name: Szereszewski, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: All the Lie point symmetries of the near extremal horizon geometry equation, in the case of 4-dimensional Einstein vacuum spacetime with cosmological constant, are the diffeomorphisms of the space of the null generators of the horizon. This result is also generalised to the Maxwell-Einstein spacetime.
Circular loop operators in conformal field theories
Creators: name: Drukker, Nadav
name: Kawamoto, Shoichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the conformal group to study non-local operators in conformal field theories. A plane or a sphere (of any dimension) is mapped to itself by some subgroup of the conformal group, hence operators confined to that submanifold may be classified in representations of this subgroup. For local operators this gives the usual definition of conformal dimension and spin, but some conformal field theories contain interesting nonlocal operators, like Wilson or 't Hooft loops. We apply those ideas to Wilson loops in four-dimensional CFTs and show how they can be chosen to be in fixed representations of SL(2,R) x SO(3).
description: 10 pages, latex
Additional file 3 of Examining the relationship between maternal body size, gestational glucose tolerance status, mode of delivery and ethnicity on human milk microbiota at three months post-partum
Creators: name: LeMay-Nedjelski, Lauren
name: Butcher, James
name: Ley, Sylvia H.
name: Asbury, Michelle R.
name: Hanley, Anthony J.
name: Kiss, Alex
name: Unger, Sharon
name: Copeland, Julia K.
name: Wang, Pauline W.
name: Zinman, Bernard
name: Stintzi, Alain
name: O’Connor, Deborah L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 3: Table S3. Proportion of samples containing the top 5 phyla and top 10 genera.
El sector industrial en el Perú: una visión de largo plazo
Creators: name: Garland Hilbck, Gonzalo
name: Saavedra Chanduvi, Jaime
name: Garland Hilbck, Gonzalo
name: Saavedra Chanduvi, Jaime
Publisher: name: Unknown
Year: 1991
Subjects: subject: Industrial Organization
subject: Productivity Analysis
subject: Sector industrial
subject: Produccion industrial
subject: Modelos econometricos
subject: Industrial sector
subject: Industrial production
subject: Econometric models
subject: Peru

description: Este documento analiza la evolución del sector industrial peruano, mostrando sus características más importantes en los últimos treinta años y poniendo énfasis en aquellos procesos que condicionaron el derrotero de largo plazo del sector; asimismo, se hace un análisis econométrico del comportamiento de cada subsector industrial.
TeV gravity at neutrino telescopes
Creators: name: Illana, J. I.
name: Masip, M.
name: Meloni, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmogenic neutrinos reach the Earth with energies around 10^9 GeV, and their interactions with matter will be measured in upcoming experiments (Auger, IceCube). Models with extra dimensions and the fundamental scale at the TeV could imply signals in these experiments. In particular, the production of microscopic black holes by cosmogenic neutrinos has been extensively studied in the literature. Here we make a complete analysis of gravity-mediated interactions at larger distances, where they can be calculated in the eikonal approximation. In these processes a neutrino of energy E_νinteracts elastically with a parton inside a nucleon, loses a small fraction y of its energy, and starts a hadronic shower of energy y E_ν<< E_ν. We analyze the ultraviolet dependence and the relevance of graviton emission in these processes, and show that they are negligible. We also study the energy distribution of cosmogenic events in AMANDA and IceCube and the possibility of multiple-bang events. For any neutrino flux, the observation of an enhanced rate of neutral current events above 100 TeV in neutrino telescopes could be explained by TeV-gravity interactions. The values of the fundamental scale of gravity that IceCube could reach are comparable to those to be explored at the LHC.
description: 10 pages, 7 figures; new section on air showers added, version to be published
Data-driven modelling of nonlinear spatio-temporal fluid flows using a deep convolutional generative adversarial network
Creators: name: Cheng, M.
name: Fang, F.
name: Pain, C. C.
name: Navon, I. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Deep learning techniques for improving fluid flow modelling have gained significant attention in recent years. Advanced deep learning techniques achieve great progress in rapidly predicting fluid flows without prior knowledge of the underlying physical relationships. Advanced deep learning techniques achieve great progress in rapidly predicting fluid flows without prior knowledge of the underlying physical relationships. However, most of existing researches focused mainly on either sequence learning or spatial learning, rarely on both spatial and temporal dynamics of fluid flows (Reichstein et al., 2019). In this work, an Artificial Intelligence (AI) fluid model based on a general deep convolutional generative adversarial network (DCGAN) has been developed for predicting spatio-temporal flow distributions. In deep convolutional networks, the high-dimensional flows can be converted into the low-dimensional "latent" representations. The complex features of flow dynamics can be captured by the adversarial networks. The above DCGAN fluid model enables us to provide reasonable predictive accuracy of flow fields while maintaining a high computational efficiency. The performance of the DCGAN is illustrated for two test cases of Hokkaido tsunami with different incoming waves along the coastal line. It is demonstrated that the results from the DCGAN are comparable with those from the original high fidelity model (Fluidity). The spatio-temporal flow features have been represented as the flow evolves, especially, the wave phases and flow peaks can be captured accurately. In addition, the results illustrate that the online CPU cost is reduced by five orders of magnitude compared to the original high fidelity model simulations. The promising results show that the DCGAN can provide rapid and reliable spatio-temporal prediction for nonlinear fluid flows.
title: Metriken und Leistungskennzahlen zur Steuerung eines Startups mit einem Abonnement-Geschäftsmodell
Creators: name: Köhler, Hendrik
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 330 Wirtschaft

description: Diese Ausarbeitung schlüsselt wesentliche Metriken und Kennzahlen für Startups mit Abonnement-Geschäftsmodellen auf. Der Schwerpunkt liegt auf der Erklärung von Kennzahlen, welche innerhalb von neu gegründeten Startups mit einem Abonnement-Geschäftsmodell Anwendung finden sollten. Nach Einführung in die terminologischen Grundlagen, also nachdem die Begriffe Startup, Abonnement-Geschäftsmodelle und die Grundlagen von Kennzahlen erklärt wurden, werden zahlreiche Kennzahlen wie beispielsweise Average Revenue per User, Customer Churn Rate oder Customer Lifetime Value im Detail erklärt und anhand von Beispielrechnungen nahegebracht.
description: This elaboration breaks down key metrics and key performance indicators for start-ups that work on subscription business models. The focus lays on explaining key performance indicators which in particular apply to newly founded start-ups with subscription business models. After introducing terminological basic principles, with an emphasis on terms like the start-up, subscription business models and the fundamentals of key figures, numerous key performance indicators such as average revenue per user, customer churn rate and customer lifetime value are explained in detail and given an understanding of by exemplary calculations.
title: Open Educational Resources als neue Aufgabe für Wissenschaftliche Bibliotheken
Creators: name: Stummeyer, Sabine
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Open Educational Resources (OER) sind sich in Deutschland bisher hauptsächlich im Bereich der schulischen Bildung im Gespräch. Ihr Potential innerhalb der deutschen Hochschullehre wurde zwar bereits erkannt, wird aber bisher noch nicht genutzt. Die Arbeit gibt einen Überblick über die terminologischen Grundlagen von OER und ihren Entwicklungsmöglichkeiten im Hochschulbereich. In einer Zusammenfassung werden die Förderung von OER durch die Europäische Kommission und in Deutschland, sowie ihre Entwicklung im deutschen Hochschulbereich dargestellt. In einem theoretischen Abgleich aktueller Studien und Fachliteratur wird eine Bestandsaufnahme zu neuen Aufgabenbereichen für Wissenschaftlicher Bibliotheken durch OER durchgeführt. Eine Expertenbefragung, die beispielhaft unter Lehrenden der Leibniz Universität Hannover (LUH) durchgeführt wurde, gibt Aufschluss über deren aktuellen Nutzungsstand von OER. Die wird ergänzt durch eine Untersuchung zweier Sharingdienste (Zenodo und SlideShare) nach freien Lehrmaterialien von Angehörigen der LUH. Abschließend werden auf der Basis der theoretischen Möglichkeiten sowie der individuellen Bedürfnisse der Lehrenden Empfehlungen für neue Dienstleistungen und Serviceangebote Wissenschaftlicher Bibliotheken zur Unterstützung der Hochschulen bei der Einführung, Herstellung und Verbreitung von OER am Beispiel der Technischen Informationsbibliothek Hannover (TIB) gegeben, sowie neue Aufgabenbereiche für Hochschulbibliotheken skizziert, die sich daraus ergeben.
Social Biases in NLP Models as Barriers for Persons with Disabilities
Creators: name: Hutchinson, Ben
name: Prabhakaran, Vinodkumar
name: Denton, Emily
name: Webster, Kellie
name: Zhong, Yu
name: Denuyl, Stephen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Building equitable and inclusive NLP technologies demands consideration of whether and how social attitudes are represented in ML models. In particular, representations encoded in models often inadvertently perpetuate undesirable social biases from the data on which they are trained. In this paper, we present evidence of such undesirable biases towards mentions of disability in two different English language models: toxicity prediction and sentiment analysis. Next, we demonstrate that the neural embeddings that are the critical first step in most NLP pipelines similarly contain undesirable biases towards mentions of disability. We end by highlighting topical biases in the discourse about disability which may contribute to the observed model biases; for instance, gun violence, homelessness, and drug addiction are over-represented in texts discussing mental illness.
description: ACL 2020 short paper. 5 pages
Política fiscal y reforma tributaria
Creators: name: Arias, Luis Alberto
name: Arias, Luis Alberto
Publisher: name: Unknown
Year: 1990
Subjects: subject: Public Economics
subject: Politica fiscal
subject: Reformas tributarias
subject: Fiscal policy
subject: Tax reforms
subject: Peru

description: El documento tiene como objetivo mostrar el reiterado fracaso de la política fiscal aplicada en el Perú durante los últimos años, así como establecer los lineamientos generales y específicos que deberían orientar la política fiscal en el mediano plazo para, luego, proponer reformas estructurales que complementen la política de estabilización.
The Time Periodic Solution of the Burgers Equation on the Half-Line and an Application to Steady Streaming
Creators: name: Fokas, A. S.
name: Stuart, J. T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The phenomenon of steady streaming, or acoustic streaming, is an important physical phenomenon studied extensively in the literature. Its mathematical formulation involves the Navier-Stokes equations, thus due to the complexity of these equations is usually studied heuristically using formal perturbation expansions. It turns out that the Burgers equation formulated on the half line provides a simple model of the above phenomenon. The physical situation corresponds to the solution of the Dirichlet problem on the half-line, which decays as $x \to \infty$ and which is {\it time periodic}. We show that the Dirichlet problem, where the usual prescription of the initial condition is now replaced by the requirement of the time periodicity, yields a well posed problem. Furthermore, we show that the solution of this problem tends to the ``inner'' and ``outer'' solutions obtained by the perturbation expansions.
Spinning strings in AdS_5 x S^5: A worldsheet perspective
Creators: name: Burrington, Benjamin A.
name: Liu, James T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the leading Regge string states relevant for semi-classical spinning string solutions. Using elementary RNS techniques, quadratic terms in an effective lagrangian are constructed which describe massive NSNS strings in a space-time with five-form flux. We then examine the specific case of AdS_5 x S^5, finding the dependence of AdS "energy" (E_0) on spin in AdS (S), spin on the sphere (J), and orbital angular momentum on the sphere (\nabla_a \nabla^a).
de Haas-van Alphen effect investigation of the electronic structure of Al substituted MgB_2
Creators: name: Carrington, A.
name: Fletcher, J. D.
name: Cooper, J. R.
name: Taylor, O. J.
name: Balicas, L.
name: Zhigadlo, N. D.
name: Kazakov, S. M.
name: Karpinski, J.
name: Charmant, J. P. H.
name: Kortus, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report a de Haas-van Alphen (dHvA) study of the electronic structure of Al doped crystals of MgB$_2$. We have measured crystals with $\sim 7.5$% Al which have a $T_c$ of 33.6 K, ($\sim 14$% lower than pure MgB$_2$). dHvA frequencies for the $σ$ tube orbits in the doped samples are lower than in pure MgB$_2$, implying a $16\pm2%$ reduction in the number of holes in this sheet of Fermi surface. The mass of the quasiparticles on the larger $σ$ orbit is lighter than the pure case indicating a reduction in electron-phonon coupling constant $λ$. These observations are compared with band structure calculations, and found to be in excellent agreement.
description: 4 pages with figures
Integrable Defects at Junctions within a Network
Creators: name: Corrigan, E.
name: Zambon, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The purpose of this article is to explore the properties of integrable, purely transmitting, defects placed at the junctions of several one-dimensional domains within a network. The defect sewing conditions turn out to be quite restrictive - for example, requiring the number of domains meeting at a junction to be even - and there is a clear distinction between the behaviour of conformal and massive integrable models. The ideas are mainly developed within classical field theory and illustrated using a variety of field theory models defined on the branches of the network, including both linear and nonlinear examples.
description: 34 pages; references added
Detailed comparison of the pp -> π^+pn and pp -> π^+d reactions at 951 MeV
Creators: name: GEM Collaboration
name: Abdel-Bary, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The positively charged pions produced in proton-proton collisions at a beam momentum of 1640 MeV/c were measured in the forward direction with a high resolution magnetic spectrograph. The missing mass distribution shows the bound state (deuteron) clearly separated from the $pn$ continuum. Despite the very good resolution, there is no evidence for any significant production of the $pn$ system in the spin-singlet state. However, the $σ(pp\to π^+pn)/σ(pp\to π^+d)$ cross section ratio is about twice as large as that predicted from $S$-wave final-state-interaction theory and it is suggested that this is due to $D$-state effects in the $pn$ system.
description: 8 pages, 3 figures
title: Entwicklung eines generischen XML-Editors für ein interoperables Programmieraufgabenformat
Creators: name: Reiser, Paul
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 004 Informatik

description: Diese Bachelorarbeit befasst sich mit der Entwicklung eines generischen XML-Editors für das ProFormA-Aufgabenformat. ProFormA ermöglicht einen Aufgabenaustausch zwischen Hochschulen, Lernmanagementsystemen und Gradern. Aufgaben werden von Lehrkräften genutzt und für ihren individuellen Lehrkontext angepasst. Weil das manuelle Editieren von ProFormA-Aufgaben durch XML, Erweiterbarkeit und Komplexität des Formats erschwert wird, muss ein XML-Editor entwickelt werden, der generische Mechanismen implementiert, die das Anzeigen, Editieren, Hinzufügen und Entfernen von ProFormA- und Fremdformatelementen ermöglichen.
Das anaphorische Fürbittgebet der syrischen Basiliusliturgie
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 50 (1966): Oriens christianus, Band 50
Development Strategies and Food and Nutrition Security in Africa : An Assessment
Creators: name: Heidhues, Franz
name: Atsain, Achi
name: Nyangito, Hezron Omare
name: Padilla, Martine
name: Ghersi, Gerard
name: Le Vallee, Jean-Charles
name: Heidhues, Franz
name: Atsain, Achi
name: Nyangito, Hezron Omare
name: Padilla, Martine
name: Ghersi, Gerard
name: Le Vallee, Jean-Charles
Publisher: name: Unknown
Year: 2004
Subjects: Food Security and Poverty

description: hunger and malnutrition. If we are to succeed, it is vital that food and nutrition security strategies be both sound and able to be implemented. Ultimately, strategies deficient in either of these two areas will be ineffectual. Lessons from past strategies provide a valuable resource in the design of future strategies, yet there is a dearth of programmatic information and rigorous evaluations of the approaches used in the past. With this in mind, the authors of this 2020 discussion paper—Franz Heidhues, Achi Atsain, Hezron Nyangito, Martine Padilla, Gérard Ghersi, and Jean-Charles Le Vallée— review the multitude of approaches and strategies for achieving food and nutrition security in Africa within the context of development over the past four decades. They assess the extent to which these plans have been implemented and identify the key constraints and limitations, along with the priority investments needed for more effective design and implementation in the future. This paper was commissioned for the IFPRI 2020 Africa Conference, “Assuring Food and Nutrition Security in Africa by 2020: Prioritizing Actions, Strengthening Actors, and Facilitating Partnerships,” which was held in Kampala, Uganda, from April 1 to April 3, 2004. There, the lessons learned from decades of successes and failures in designing and implementing strategies in and for Africa contributed to an informed and informative discussion of how to improve the implementation of action to end hunger and malnutrition. We thank the authors for setting the stage for the systematic examination of these extremely important issues and hope that this paper is only the beginning of such endeavors.