cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Framework for Generating Query Language Code from OCL Invariants
Creators: name: Heidenreich, Florian
name: Wende, Christian
name: Demuth, Birgit
Publisher: name: European Association of Software Science and Technology
Year: 2007

description: The semantical integrity of business data is of great importance for the implementation of business applications. Model-Driven Software Development (MDSD) allows for specifying the relevant domain concepts, their interrelations and their concise semantics using a plethora of modelling languages. Since model transformations enable an automatic mapping of platform independent models (PIMs) to platform specific models (PSMs) and code, it is reasonable to utilise them to derive data schemas and integrity rules for business applications.

Most current approaches only focus on transforming structural descriptions of software systems while semantical specifications are neglected. However, to preserve also the semantical integrity rules we propose a Query Code Generation Framework that enables Model-Driven Integrity Engineering. This framework allows for mapping UML models to arbitrary data schemas and for mapping OCL invariants to sentences in corresponding declarative query languages, enforcing semantical data integrity on implementation level. This supersedes the manual translation of integrity constraints and, thus, decreases development costs while increasing software quality.
description: Electronic Communications of the EASST, Volume 9: Ocl4All - Modelling Systems with OCL
Quantum gravitational collapse: non-singularity and non-locality
Creators: name: Greenwood, Eric
name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate gravitational collapse in the context of quantum mechanics. We take primary interest in the behavior of the collapse near the horizon and near the origin (classical singularity) from the point of view of an infalling observer. In the absence of radiation, quantum effects near the horizon do not change the classical conclusions for an infalling observer, meaning the horizon is not an obstacle for him. However, quantum effects are able to remove the classical singularity at the origin, since the wave function is non-singular at the origin. Also, near the classical singularity, some non-local effects become important. In the Schrodinger equation describing behavior near the origin, derivatives of the wave function at one point are related to the value of the wave function at some other distant point.
description: minor clarifications, accepted for publication in JHEP
Model-Level Integration of the OCL Standard Library Using a Pivot Model with Generics Support
Creators: name: Bräuer, Matthias
name: Demuth, Birgit
Publisher: name: European Association of Software Science and Technology
Year: 2007

description: OCL 2.0 specifies a standard library of predefined types and associated operations. A model-level representation of the library is required to reference its elements within the abstract syntax model created by an OCL parser. Existing OCL engines build this model in the implementation code which severely limits reusability, flexibility and maintainability. To address these problems, we show how a common pivot model with explicit support for template types can help to externalize the definition of the standard library and integrate it with instances of arbitrary domain-specific modeling languages. We exemplify the feasibility of our approach with a prototypical implementation for the Dresden OCL2 Toolkit and present a tailored EMF editor for modeling the OCL types and operations. We limit our discussion to the model level, i.e., we do not consider an implementation of the standard library for an execution engine.
description: Electronic Communications of the EASST, Volume 9: Ocl4All - Modelling Systems with OCL
A Case Study of the Picture Rocks Sun Dagger, Plus a Review of the Intentionality of Sun Daggers
Creators: name: Schaefer, Bradley E.
name: Stamm, James
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: The Picture Rocks Sun Dagger is a spiral petroglyph on a hillside northwest of Tucson that shows sun dagger events at both the summer solstice and the equinoxes. On each of these dates, a wedge-shaped sunbeam with opening angles 20°-30° touches the center of the spiral, with both of these being confidently intentionally constructed by peoples of the Hohokam culture c. 800--1300 AD. More generally for claimed sun daggers throughout the American Southwest, the critical question is whether the ancient indigenous peoples intentionally placed the petroglyph so as to create a solar marker. The confident starting point for proving the intentionality of sun daggers in general is a histogram measured by the Prestons showing highly significant peaks for indicated declinations within 2° of -23.4°, 0.0°, and +23.4°, with this being not by chance. In a review of solsticial and equinoctal sun daggers, we find that they all have beams of light shaped like a long-thin triangle with an apex opening angle of <40° that touches the center of the petroglyph symbol. The majority of the sun daggers use a spiral petroglyph, with circles and other symbols being used. Where a spiral or circular petroglyph has a coincidental light/shadow display, the false alarm rate is measured to be 20% to 33%. Sun daggers that have indicated declinations other than +-23.4° or 0.0° are false alarms, including claims for alignments to cross-quarter days and lunar standstills, which are certainly wrong. Intentional sun daggers are not related to any form of calendric regulation, astronomical tools, or public ceremony. Rather, abundant ethnographic evidence shows that sun daggers are a part of sites, called Sun Shrines, where a local Sun watcher would have lone vigils, with offerings and prayers to the gods on the solstices and equinoxes.
description: 25 pages. See also Astronomy Picture of the Day, 5 August 2020, https://apod.nasa.gov/apod/ap200805.html
H.264/SVC Mode Decision Based on Mode Correlation and Desired Mode List
Creators: name: Balaji, L.
name: Thyagharajan, K. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: E.4; I.4.2; H.4.3

description: The design of video encoders involves the implementation of fast mode decision (FMD) algorithm to reduce computation complexity while maintaining the performance of the coding. Although H.264/scalable video coding (SVC) achieves high scalability and coding efficiency, it also has high complexity in implementing its exhaustive computation. In this paper, a novel algorithm is proposed to reduce the redundant candidate modes by making use of the correlation among layers. The desired mode list is created based on the probability to be the best mode for each block in the base layer and a candidate mode selection in the enhancement layer by the correlations of modes among the reference frame and current frame. Our algorithm is implemented in joint scalable video model (JSVM) 9.19.15 reference software and the performance is evaluated based on the average encoding time, peak signal to noise ratio (PSNR) and bit rate. The experimental results show 41.89% improvement in encoding time with minimal loss of 0.02dB in PSNR and 0.05% increase in bit rate.
description: 12 pages, 13 figures
Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
Creators: name: Follana, E.
name: Mason, Q.
name: Davies, C.
name: Hornbostel, K.
name: Lepage, G. P.
name: Shigemitsu, J.
name: Trottier, H.
name: Wong, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We use perturbative Symanzik improvement to create a new staggered-quark action (HISQ) that has greatly reduced one-loop taste-exchange errors, no tree-level order a^2 errors, and no tree-level order (am)^4 errors to leading order in the quark's velocity v/c. We demonstrate with simulations that the resulting action has taste-exchange interactions that are at least 3--4 times smaller than the widely used ASQTAD action. We show how to estimate errors due to taste exchange by comparing ASQTAD and HISQ simulations, and demonstrate with simulations that such errors are no more than 1% when HISQ is used for light quarks at lattice spacings of 1/10 fm or less. The suppression of (am)^4 errors also makes HISQ the most accurate discretization currently available for simulating c quarks. We demonstrate this in a new analysis of the psi-eta_c mass splitting using the HISQ action on lattices where a m_c=0.43 and 0.66, with full-QCD gluon configurations (from MILC). We obtain a result of~111(5) MeV which compares well with experiment. We discuss applications of this formalism to D physics and present our first high-precision results for D_s mesons.
description: 21 pages, 8 figures, 5 tables
Sharing OCL Constraints by Using Web Rules
Creators: name: Milanović, Milan
name: Gašević, Dragan
name: Giurca, Adrian
name: Wagner, Gerd
name: Devedžić, Vladan
Publisher: name: European Association of Software Science and Technology
Year: 2007

description: This paper presents an MDE-based approach to interchanging rules between the Object Constraint Language (OCL) and REWERSE I1 Rule Markup Language (R2ML). The R2ML tends to be a standard rule markup language by following up the W3C initiative for Rule Interchange Format (RIF). The main benefit of this approach is that the transformations between languages are completely based on the languages' abstract syntax (i.e., metamodels) and in this way we keep the focus on the language concepts rather than on technical issues caused by different concrete syntax. In the current implementation, we have supported translation of the OCL invariants into the R2ML integrity rules. While most of the OCL expression could be represented in the R2ML and other rule languages, we have also identified that collection operators could only be partially supported in other rule languages (e.g., SWRL).
description: Electronic Communications of the EASST, Volume 9: Ocl4All - Modelling Systems with OCL
Planetary Systems in Binaries. I. Dynamical Classification
Creators: name: Takeda, Genya
name: Kita, Ryosuke
name: Rasio, Frederic A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Many recent observational studies have concluded that planetary systems commonly exist in multiple-star systems. At least ~20% of the known extrasolar planetary systems are associated with one or more stellar companions. The orbits of stellar binaries hosting planetary systems are typically wider than 100 AU and often highly inclined with respect to the planetary orbits. The effect of secular perturbations from such an inclined binary orbit on a coupled system of planets, however, is little understood theoretically. In this paper we investigate various dynamical classes of double-planet systems in binaries through numerical integrations and we provide an analytic framework based on secular perturbation theories. Differential nodal precession of the planets is the key property that separates two distinct dynamical classes of multiple planets in binaries: (1) dynamically-rigid systems in which the orbital planes of planets precess in concert as if they were embedded in a rigid disk, and (2) weakly-coupled systems in which the mutual inclination angle between initially coplanar planets grows to large values on secular timescales. In the latter case, the quadrupole perturbation from the outer planet induces additional Kozai cycles and causes the orbital eccentricity of the inner planet to oscillate with large amplitudes. The cyclic angular momentum transfer from a stellar companion propagating inward through planets can significantly alter the orbital properties of the inner planet on shorter timescales. This perturbation propagation mechanism may offer important constraints on the presence of additional planets in known single-planet systems in binaries.
description: 14 pages, 14 figures, to appear in ApJ
LHIII pottery from Elis: local peculiarities and “foreign” connections.
Creators: name: Moutzourides, Panagiotis
name: Nikolentzos, Konstantinos
Publisher: name: National and Kapodistrian University of Athens
Year: 2024

description: Elis is a, more or less, neglected area, when a scholar thinks about Mycenaean Greece. That has to do, primarily, with the fact that acted as a “periphery” of the Mycenaean palatial system, having no trace of a centralized rulership left in the archaeological data. But it is due, also, to the limited production of papers, concerning the human presence in the area at Mycenaean times. This paper, based on the material the authors dealt with, aims to put Mycenaean Elis on the map when someone wants to see if there was pottery production and exchange, during LHIII period, and what were their main characteristics.
description: Athens University Review of Archaeology (AURA), Vol 6 (2023)
Blob formation and ejection from the radiative inefficient accretion flow around massive black hole
Creators: name: Zhao, Tian-Le
name: Yuan, Ye-Fei
name: Kumar, Rajiv
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the small scale magnetic reconnection above the radiative inefficient accretion flow around massive black hole via 2D magnetohydrodynamics (MHD) numerical simulation, in order to model the blob formation and ejection from the accretion flow around Sgr A*. The connection of both the newly emerging magnetic field and the pre-existing magnetic field is investigated to check whether blobs could be driven in the environment of black hole accretion disc. After the magnetic connection, both the velocity and temperature of the plasma can be comparable to the inferred physical properties at the base of the observed blob ejection. For illustration, three small boxes which are located within 40 Schwarzschild radii from the central black hole are chosen as our simulation areas. At the beginning of the reconnections, the fluid is pulled toward the central black hole due to the gravitational attraction and the current sheet produced by the reconnection is also pulled toward the same direction, consequently, the resulting outflows move both upwards and towards the symmetry axis of the central black hole. Eventually, huge blobs appear, which supports the catastrophe model of episodic jets \citep{2009MNRAS.395.2183Y}. It is also found that the closer to the black hole the magnetic connection happens, the higher the converting efficiency of the magnetic energy into the heat and kinetic energy. For these inner blobs, they have vortex structure due to the K-H instability, which happens along the current sheet separating the fluids with different speed.
description: press in MNRAS
Body part vocabulary and paradigms, recorded by Verdena
Creators: name: Parker, Verdena
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-010511-13 through VP-010511-31: Body part vocabulary with possessive paradigms. Recorded by Verdena Parker using an Edirol digital recorder in April or May of 2011 (the date May 1, 2011 reflected in the filenames is only approximate), in stereo with low gain.
Lembadion lucens Kahl 1931
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peniculida
Lembadionidae
Lembadion
Lembadion lucens

description: Lembadion lucens (Maskell, 1887) Kahl, 1931
Distribution. BRAZIL: Paraná River between the Nupelia’s Field Station and the district of Porto São José, São Pedro do Paraná (Buosi et al. 2014 b, 2015), (Ad).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 30, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Light and Airy: a simple solution for relativistic quantum acceleration radiation
Creators: name: Good, Michael R. R.
name: Linder, Eric V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum radiation of particle production by vacuum from an ultra-relativistic moving mirror (dynamical Casimir effect) solution that allows (possibly for the first time) analytically calculable time evolution of particle creation and an Airy particle spectral distribution. The reality of the beta Bogoliubov coefficients is responsible for the simplicity, and the mirror is asymptotically inertial at the speed of light, with finite energy production. We also discuss general relations regarding negative energy flux, the transformation to the 1-D Schr{ö}dinger equation, and the incompleteness of entanglement entropy.
description: 10 pages, 9 figures
A red-figure calyx-krater from Troizen
Creators: name: Giannopoulou, Maria
Publisher: name: National and Kapodistrian University of Athens
Year: 2024
Subjects: Ερυθρόμορφη αγγειογραφία

description: A fragmentary red-figure calyx-krater was found in a salvage excavation at the area of Troizen’s eastern cemetery. Hephaistos returning to Olympos on muleback, accompanied by Dionysos and members of his thiasos, is depicted on the surviving part of the body. The configuration of the scene and the drawing style point to the workshop of the Pronomos Painter, active in the late 5th and early 4th centuries BC. The vase was most probably fashioned shortly after the beginning of the 4th century, as is indicated by specific features in its shape. The scene belongs among the few late depictions of Hephaistos’ Return in Attic vase painting, as the great majority of other known examples date from the 6th and 5th centuries BC. The representation follows the norms of the established iconography of the subject, while also exhibiting some innovative features: the figures are set at various levels, an arrangement creating the illusion of depth and perhaps reflecting influences from monumental painting; Hephaistos and Dionysos are portrayed as nude beardless youths, whereas in earlier or contemporary representations of this subject matter they are normally draped and bearded; a Nike flying above Dionysos and lending the procession a triumphant character appears for the first time in this scene.
description: Athens University Review of Archaeology (AURA), Vol 6 (2023)
Experience: Quality Benchmarking of Datasets Used in Software Effort Estimation
Creators: name: Bosu, Michael F.
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Data is a cornerstone of empirical software engineering (ESE) research and practice. Data underpin numerous process and project management activities, including the estimation of development effort and the prediction of the likely location and severity of defects in code. Serious questions have been raised, however, over the quality of the data used in ESE. Data quality problems caused by noise, outliers, and incompleteness have been noted as being especially prevalent. Other quality issues, although also potentially important, have received less attention. In this study, we assess the quality of 13 datasets that have been used extensively in research on software effort estimation. The quality issues considered in this article draw on a taxonomy that we published previously based on a systematic mapping of data quality issues in ESE. Our contributions are as follows: (1) an evaluation of the "fitness for purpose" of these commonly used datasets and (2) an assessment of the utility of the taxonomy in terms of dataset benchmarking. We also propose a template that could be used to both improve the ESE data collection/submission process and to evaluate other such datasets, contributing to enhanced awareness of data quality issues in the ESE community and, in time, the availability and use of higher-quality datasets.
description: 26 pages, Journal, 13 tables, 5 figures
Members of the double pulsar system PSR J0737-3039 : neutron stars or strange stars ?
Creators: name: Bagchi, Manjari
name: Dey, Jishnu
name: Konar, Sushan
name: Bhattacharya, Gour
name: Dey, Mira
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One interesting method of constraining the dense matter Equations of State is to measure the advancement of the periastron of the orbit of a binary radio pulsar (when it belongs to a double neutron star system). There is a great deal of interest on applicability of this procedure to the double pulsar system PSR J0737-3039 (A/B). Although the above method can be applied to PSR A in future within some limitations, for PSR B this method can not be applied. On the other hand, the study of genesis of PSR B might be useful in this connection and its low mass might be an indication that it could be a strange star.
description: 6 pages, no figure. Accepted for publication in New Astronomy
iFishIENCi Assessment of Organoleptic and Nutritional Quality of Fish Products from the Demonstration Tests
Creators: name: Rost, Anneli
name: Nagel, Florian
name: Kobolák, Julianna
name: Shrestha, Marie
name: Robinson, Freya
Publisher: name: Zenodo
Year: 2023
Subjects: organoleptics
sensory
novel feeds
nutrition
aquaculture

description: In this deliverable of the iFishIENCi Project, we presented the results of organoleptic assessments carried out on three fish species, rainbow trout, African catfish and tilapia using different novel feed ingredients adapted to the fish species.
Minutes of adjourned hearing of the Court of Revision of the Winfield and Okanagan Centre Irrigation District, November 20, 1930
Creators: name: Court Of Revision Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of adjourned Court of Revision of the Winfield and Okanagan Centre Irrigation District, dated November 20, 1930.
An algorithmic complexity interpretation of Lin's third law of information theory
Creators: name: Ratsaby, Joel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computational Complexity (cs.CC)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Instead of static entropy we assert that the Kolmogorov complexity of a static structure such as a solid is the proper measure of disorder (or chaoticity). A static structure in a surrounding perfectly-random universe acts as an interfering entity which introduces local disruption in randomness. This is modeled by a selection rule $R$ which selects a subsequence of the random input sequence that hits the structure. Through the inequality that relates stochasticity and chaoticity of random binary sequences we maintain that Lin's notion of stability corresponds to the stability of the frequency of 1s in the selected subsequence. This explains why more complex static structures are less stable. Lin's third law is represented as the inevitable change that static structure undergo towards conforming to the universe's perfect randomness.
Cloud Atlas: Unraveling the vertical cloud structure with the time-series spectrophotometry of an unusually red brown dwarf
Creators: name: Lew, Ben W. P.
name: Apai, Dániel
name: Marley, Mark
name: Saumon, Didier
name: Schneider, Glenn
name: Zhou, Yifan
name: Cowan, Nicolas B.
name: Karalidi, Theodora
name: Manjavacas, Elena
name: Bedin, L. R.
name: Miles-Páez, Paulo A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Rotational modulations of emission spectra in brown dwarf and exoplanet atmospheres show that clouds are often distributed non-uniformly in these ultracool atmospheres. The spatial heterogeneity in cloud distribution demonstrates the impact of atmospheric dynamics on cloud formation and evolution. In this study, we update the Hubble Space Telescope (HST) time-series data analysis of the previously reported rotational modulations of WISEP J004701+680352 -- an unusually red late-L brown dwarf with a spectrum similar to that of the directly imaged planet HR8799e. We construct a self-consistent spatially heterogeneous cloud model to explain the Hubble Space Telescope and the Spitzer time-series observations, as well as the time-averaged spectra of WISE0047. In the heterogeneous cloud model, a cloud thickness variation of around one pressure scale height explains the wavelength dependence in the HST near-IR spectral variability. By including disequilibrium CO/$CH_4$ chemistry, our models also reproduce the redder $J-K_{\rm s}$ color of WISE0047 compared to that of field brown dwarfs. We discuss the impact of vertical cloud structure on atmospheric profile and estimate the minimum eddy diffusivity coefficient for other objects with redder colors. Our data analysis and forward modeling results demonstrate that time-series spectrophotometry with a broad wavelength coverage is a powerful tool for constraining heterogeneous atmospheric structure.
description: accepted for publication in The Astrophysical Journal
PP-waves on Superbrane Backgrounds
Creators: name: Cavaglia, Marco
name: Harms, Benjamin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we discuss a method of generating supersymmetric solutions of the Einstein equations. The method involves the embedding of one supersymmetric spacetime into another. We present two examples with constituent spacetimes which support "charges", one of which was known previously and the other of which is new. Both examples have PP-waves as one of the embedding constituents.
description: 6 pages no figures
title: Reflexão prévia I
Creators: name: Hollanda, Heloísa Buarque de
Publisher: name: CICS.NOVA - Centro Interdisciplinar de Ciências Sociais, Faculdade de Ciências Sociais, Universidade NOVA de Lisboa
Year: 2019

description: Texto de reflexão por Heloísa Buarque de Holanda.
description: Hollanda, H. B. de (2019). Reflexão prévia I. Faces de Eva. Estudos sobre a Mulher, (EXTRA), 19-22. ISSN: 0874-6885
Equilibrium shapes and floatability of static and vertically vibrated heavy liquid drops on the surface of a lighter fluid
Creators: name: Pototsky, Andrey
name: Oron, Alexander
name: Bestehorn, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A small drop of a heavier fluid may float on the surface of a lighter fluid supported by surface tension forces. In equilibrium, the drop assumes a radially symmetric shape with a circular triple-phase contact line. We show theoretically and experimentally that such a floating liquid drop with a sufficiently small volume has two distinct stable equilibrium shapes: one with a larger and one with a smaller radius of the triple-phase contact line. Next, we experimentally study the floatability of a less viscous water drop on the surface of a more viscous and less dense oil, subjected to a low frequency (Hz-order) vertical vibration. We find that in a certain range of amplitudes, vibration helps heavy liquid drops to stay afloat. The physical mechanism of the increased floatability is explained by the horizontal elongation of the drop driven by subharmonic Faraday waves. The average length of the triple-phase contact line increases as the drop elongates that leads to a larger average lifting force produced by the surface tension.
Aufgabe und Mandat der Arbeitsgemeinschaft Christlicher Kirchen
Creators: name: Urban, Hans Jörg
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 57 Nr. 1 (2008): Ökumenische Rundschau, Band 57, Heft 1
Magnetization depinning transition, anisotropic magnetoresistance and inplane anisotropy in two polytypes of La$_{2 / 3}$Sr$_{1 / 3}$MnO$_{3}$ epitaxial films
Creators: name: Mandal, Soumen
name: Budhani, R. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The isothermal magnetoresistance [R($θ$)] of [001] and [110] epitaxial films of La$_{2 / 3}$Sr$_{1 / 3}$MnO$_{3}$ measured as a function of the angle $θ$ between current ($\vec{I}$) and magnetic field ($\vec{H}$), both in the plane of the film, is measured at several temperatures between 10 and 300K. The magnetic easy axis of these polytypes is intimately related to the orientation of Mn - O - Mn bonds with respect to the crystallographic axis on the plane of the substrate and energy equivalence of some of these axes. The magnetization vector ($\vec{M}$) of the [001] and [110] type films is pinned along the [110] and [001] directions respectively at low fields. A magnetization orientation phase transition (MRPT) which manifests itself as a discontinuity and hysteresis in $R(ψ)$ where $ψ$ is the angle between $\vec{H}$ and the easy axis for the $\vec{H}$ below a critical value $\vec{H}^*$ has been established. The boundary of the pinned and depinned phase on the H-T plane has been established. The highly robust pinning of magnetization seen in [110] films is related to their uniquely defined easy axis. The isothermal resistance R$_\bot$ and R$_\|$ for $\vec{I} \bot \vec{H}$ and $\vec{I} \| \vec{H}$, respectively for both polytypes follows the inequality R$_\bot >$ R$_\|$ for all ranges of fields ($0 \leq H \leq 3500Oe$) and temperatures (10K - 300K). A full fledged analysis of the rotational magnetoresistance is carried out in the framework of Döring theory for MR in single crystal samples. Strong deviations from the predicted angular dependence are seen in the irreversible regime of magnetization.
description: 20 pages, 16 figures
Entanglement properties and moment distributions of a system of hard-core anyons on a ring
Creators: name: Santachiara, Raoul
name: Stauffer, Franck
name: Cabra, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the one-particle von Neumann entropy of a system of N hard-core anyons on a ring. The entropy is found to have a clear dependence on the anyonic parameter which characterizes the generalized fractional statistics described by the anyons. This confirms the entanglement as a valuable measure to investigate topological properties of quantum states. Furthermore, we determine analytically the large N asymptotics of the anyonic one-particle density matrix. The formula presented here generalizes the Lenard formula obtained for a system of N hard-core bosons. Finally, we present a numerical analysis which confirms the analytical results and provides additional insight into the problem under consideration.
description: 5 pages, 3 eps figures. v2: Fig 3 changed, Eq 13 changed, minor corrections. References added
Comment on "Einstein-Gauss-Bonnet Gravity in Four-Dimensional Spacetime"
Creators: name: Arrechea, Julio
name: Delhom, Adrià
name: Jiménez-Cano, Alejandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We argue that several statements in Phys. Rev. Lett. 124, 081301 (2020) are not correct.
description: 2 pages, accepted as a Comment in Physical Review Letters
Meissner effect without superconductivity from a chiral d-density wave
Creators: name: Kotetes, P.
name: Varelogiannis, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate that the formation of a chiral d-density wave (CDDW) state generates a Topological Meissner effect (TME) in the absence of any kind of superconductivity. The TME is identical to the usual superconducting Meissner effect but it appears only for magnetic fields perpendicular to the plane while it is absent for in plane fields. The observed enhanced diamagnetic signals in the non-superconducting pseudogap regime of the cuprates may find an alternative interpretation in terms of a TME, originating from a chiral d-density wave pseudogap.
description: 4 pages, 3 figures
LCD -- Line Clustering and Description for Place Recognition
Creators: name: Taubner, Felix
name: Tschopp, Florian
name: Novkovic, Tonci
name: Siegwart, Roland
name: Furrer, Fadri
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: Current research on visual place recognition mostly focuses on aggregating local visual features of an image into a single vector representation. Therefore, high-level information such as the geometric arrangement of the features is typically lost. In this paper, we introduce a novel learning-based approach to place recognition, using RGB-D cameras and line clusters as visual and geometric features. We state the place recognition problem as a problem of recognizing clusters of lines instead of individual patches, thus maintaining structural information. In our work, line clusters are defined as lines that make up individual objects, hence our place recognition approach can be understood as object recognition. 3D line segments are detected in RGB-D images using state-of-the-art techniques. We present a neural network architecture based on the attention mechanism for frame-wise line clustering. A similar neural network is used for the description of these clusters with a compact embedding of 128 floating point numbers, trained with triplet loss on training data obtained from the InteriorNet dataset. We show experiments on a large number of indoor scenes and compare our method with the bag-of-words image-retrieval approach using SIFT and SuperPoint features and the global descriptor NetVLAD. Trained only on synthetic data, our approach generalizes well to real-world data captured with Kinect sensors, while also providing information about the geometric arrangement of instances.
description: Accepted for International Conference on 3D Vision (3DV) 2020
Vocabulary and paradigms, recorded by Verdena
Creators: name: Parker, Verdena
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-010511-05 through VP-010511-12: Vocabulary and paradigms, with discussion and commentary for some items: 'become poor/thin', 'think', 'turn around'; phrases pertaining to bad habits, respecting people, holding a grudge, and describing an evil person. Recorded by Verdena Parker using an Edirol digital recorder in April or May of 2011 (the date May 1, 2011 reflected in the filenames is only approximate), in stereo with low gain.
Refactoring of UML models using AGG
Creators: name: Folli, Alessandro
name: Mens, Tom
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: Model refactoring is an emerging research topic that is heavily inspired 
by refactoring of object-oriented programs. Current-day UML modeling environments provide poor support for evolving UML models and applying refactoring techniques at model level. As UML models are intrinsically graph-based in nature we propose to use graph transformations to specify and apply model refactoring. More in particular, we use a specific graph transformation tool, AGG, and provide recommendations of how AGG may be improved to better support model refactoring. These recommendations are based on a small experiment that we have carried out with refactoring of UML class diagrams and state machines.
description: Electronic Communications of the EASST, Volume 8: ERCIM Symposium on Software Evolution 2007
Evolutionary Success of Open Source Software:  an Investigation into Exogenous Drivers
Creators: name: Beecher, Karl
name: Boldyreff, Cornelia
name: Capiluppi, Andrea
name: Rank, Stephen
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: The âsuccessâ of a Free/Libre/Open Source Software (FLOSS) project has often been evaluated through the number of commits made to its configuration management system, number of developers and number of users. Based on SourceForge, most studies have concluded that the vast majority of projects are failures. 
This paper argues that the relative success of a FLOSS project can depend also on the chosen forge and distribution. Given a random sample of 50 projects contained within a popular FLOSS forge (Debian, which is the basis of the successful Debian distribution), we compare these with a similar sample from SourceForge, using product and process metrics, such as size achieved and number of developers in-
volved.
The results show firstly that, depending on the forge of FLOSS projects, researchers can draw different conclusions regarding what constitutes a successful FLOSS project. Secondly, the projects included in the Debian distribution benefit, on average, from more evolutionary activity and more developers than the comparable projects on SourceForge. Finally, the Debian projects start to benefit from more activity and more developers from the point at which they join this distribution.
description: Electronic Communications of the EASST, Volume 8: ERCIM Symposium on Software Evolution 2007
Confirmation of the remarkable compactness of massive quiescent galaxies at z~2.3: early-type galaxies did not form in a simple monolithic collapse
Creators: name: van Dokkum, Pieter
name: Franx, Marijn
name: Kriek, Mariska
name: Holden, Bradford
name: Illingworth, Garth
name: Magee, Daniel
name: Bouwens, Rychard
name: Marchesini, Danilo
name: Quadri, Ryan
name: Rudnick, Greg
name: Taylor, Edward
name: Toft, Sune
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using deep near-infrared spectroscopy Kriek et al. (2006) found that ~45% of massive galaxies at z~2.3 have evolved stellar populations and little or no ongoing star formation. Here we determine the sizes of these quiescent galaxies using deep, high-resolution images obtained with HST/NIC2 and laser guide star-assisted Keck/AO. Considering that their median stellar mass is 1.7x10^11 Solar masses the galaxies are remarkably small, with a median effective radius of 0.9 kpc. Galaxies of similar mass in the nearby Universe have sizes of ~5 kpc and average stellar densities which are two orders of magnitude lower than the z~2.3 galaxies. These results extend earlier work at z~1.5 and confirm previous studies at z>2 which lacked spectroscopic redshifts and imaging of sufficient resolution to resolve the galaxies. Our findings demonstrate that fully assembled early-type galaxies make up at most ~10% of the population of K-selected quiescent galaxies at z~2.3, effectively ruling out simple monolithic models for their formation. The galaxies must evolve significantly after z~2.3, through dry mergers or other processes, consistent with predictions from hierarchical models.
description: Accepted for publication in ApJ Letters
Thermodynamics of the Euler-Heisenberg-AdS black hole
Creators: name: Magos, Daniela
name: Bretón, Nora
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize the solution to the Euler-Heisenberg (EH) theory coupled to gravity that represents a nonlinearly charged static black hole (BH) introducing the cosmological constant; the obtained solution is characterized by four parameters: mass $M$, electric charge $Q$, cosmological constant $Λ$ (positive or negative) and the Euler-Heisenberg theory parameter $a$. Then we briefly analyze some BH features like horizons, electromagnetic field and geodesics. We mainly focus on its thermodynamic properties in the extended space where the anti-de Sitter parameter is interpreted as the pressure; we show the consistency between the Smarr formula and the first law of BH thermodynamics, interpreting the parameter of the EH theory as the vacuum polarization. We determine the equation of state and the critical points; the critical volume determines two branches of BHs, one near Maxwell behavior and a second one manifestly nonlinear electromagnetic. Moreover, the analysis of the Gibbs free energy indicates that two phase transitions can occur; we also construct the coexistence curve $P$-$T$ where the different phases of the BH can be observed; the critical point is characterized by the standard mean field theory exponents, and the critical variables satisfy $P_{\rm crit} v_{\rm crit}/ T_{\rm crit} = 3/8 $ plus terms of the ten thousandths order in the Euler-Heisenberg parameter $a$
description: 18 pages, 11 figures
DIALYSIS ADEQUACY AND QUALITY OF LIFE OF PATIENTS WITH END-STAGE CHRONIC KIDNEY DISEASE
Creators: name: Rallis, Maria
name: Tsironi, Maria
name: Panoutsopoulos, Georgios
name: Kolovos, Petros
name: Aroni, Adamantia
name: Zyga, Sofia
Publisher: name: Zenodo
Year: 2023
Subjects: hemodialysis, dialysis adequacy, quality of life, renal failure

description: Introduction: Hemodialysis is a method of replacing renal function, essential for the survival of patients with end-stage renal disease.Aim: To investigate the factors of adequate hemodialysis and its importance for the patients' quality of life.Methodοlogy: A systematic literature review was performed in the online database PubMed. The PRISMA method was used. Research studies written in the English language and published from 2002 to 2021 were included. The keywords used for the search were: dialysis, dialysis adequacy, quality of life. From the search, 234 articles-studies were found, of which 11 were finally used.Results: Dialysis adequacy was found to improve with the incorporation of ROM exercise during hemodialysis, the use of stepwise sodium filtration and ultrafiltration profiles and stepwise dialysate flow rate profiles, and with long intermittent dialysis. In contrast, citric acid and the type of vascular access were not found to affect the adequacy of dissolution. Most studies reported a positive association between dialysis adequacy and patient quality of life, while one study reported no association.Conclusions: Performing adequate and effective hemodialysis can improve patients' quality of life and reduce the complications of renal failure.
Vocabulary related to the weather and flooding, recorded by Verdena
Creators: name: Parker, Verdena
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-010511-01 and VP-010511-02: Vocabulary related to the weather and flooding. Recorded by Verdena Parker using an Edirol digital recorder in April or May of 2011 (the date May 1, 2011 reflected in the filenames is only approximate), in stereo with low gain.
Novel Techniques For Model-Code Synchronization
Creators: name: Angyal, László
name: Lengyel, László
name: Charaf, Hassan
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: The orientation of the current software development practice requires efficient model-based iterative solutions. The high costs of maintenance and evolution during the life cycle of the software can be reduced by using tool-aided iterative development. This paper presents how model-based iterative software development can be supported through efficient model-code change propagation. The presented approach facilitates bi-directional synchronization between the modified source code and the refined initial models. The backgrounds of the synchronization technique are three-way abstract syntax tree (AST) differencing and merging. The AST-based solution enables syntactically correct merge operations. OMG's Model-Driven Architecture describes a proposal for platform-specific model creation and source code generation. We extend this vision with the synchronization feature to assist the iterative development. Furthermore, a case study is also provided.
description: Electronic Communications of the EASST, Volume 8: ERCIM Symposium on Software Evolution 2007
New approach in the extracting of parton densities, based on the parameterized solution of inverse Mellin technique
Creators: name: Mirjalili, A.
name: Keshavarzian, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analysis the sea quark densities, based on the constituent quark model. To perform a direct fit with available experimental data, the parameterized Inverse Mellin technique is used. The calculation is extended to the NLO approximation for the singlet and non-singlet cases in DIS phenomena. We employ the approach of complete RG improvement(CORGI) where one is forced to identify and resum to all-orders RG-predictable ultraviolet logarithm terms which truly build the Q-dependence of QCD observable. The results are compared with the standard approach of perturbative QCD in the ${\bar{MS}}$ scheme with a physical choice of scale. The results in the CORGI approach indicate a better agreement to the data.
description: 6 pages, 2 figures, Talk presented at IPM-LHP06, Tehran, Iran; PSN: IPM-LHP06-19May
title: Reflexão prévia II
title: Arte e género como tema de investigação
titleType: Subtitle
Creators: name: Rodrigues, Paulo Simões
Publisher: name: CICS.NOVA - Centro Interdisciplinar de Ciências Sociais, Faculdade de Ciências Sociais, Universidade NOVA de Lisboa
Year: 2019

description: Texto de reflexão assinado por Paulo Simões Rodrigues.
description: Rodrigues, P. S. (2019). Reflexão prévia II: Arte e género como tema de investigação. Faces de Eva. Estudos sobre a Mulher, (EXTRA), 23-24. ISSN: 0874-6885