cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Collapse of Magnetized Singular Isothermal Toroids: II. Rotation and Magnetic Braking
Creators: name: Allen, A.
name: Li, Z. Y.
name: Shu, F. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study numerically the collapse of rotating, magnetized molecular cloud cores, focusing on rotation and magnetic braking during the main accretion phase of isolated star formation. Motivated by previous numerical work and analytic considerations, we idealize the pre-collapse core as a magnetized singular isothermal toroid, with a constant rotational speed everywhere. The collapse starts from the center, and propagates outwards in an inside-out fashion, satisfying exact self-similarity in space and time. For rotation rates and field strengths typical of dense low-mass cores, the main feature remains the flattening of the mass distribution along field lines -- the formation of a pseudodisk, as in the nonrotating cases. The density distribution of the pseudodisk is little affected by rotation. On the other hand, the rotation rate is strongly modified by pseudodisk formation. Most of the centrally accreted material reaches the vicinity of the protostar through the pseudodisk. The specific angular momentum can be greatly reduced on the way, by an order of magnitude or more, even when the pre-collapse field strength is substantially below the critical value for dominant cloud support. The efficient magnetic braking is due to the pinched geometry of the magnetic field in the pseudodisk, which strengthens the magnetic field and lengthens the level arm for braking. Both effects enhance the magnetic transport of angular momentum from inside to outside. The excess angular momentum is carried away in a low-speed outflow that has, despite claims made by other workers, little in common with observed bipolar molecular outflows. We discuss the implications of our calculations for the formation of true disks that are supported against gravity by rotation.
description: 38 pages, 9 figures. To appear in v599 n1 ApJ December 10, 2003 issue
Visuelle Textanalyse vom Distant zum Close Reading mit THeMSE
Creators: name: Lehmann, Marina
name: John, Markus
name: Kuczera, Andreas
Publisher: name: Zenodo
Year: 2024
Subjects: DHd2024
Vortrag
Visual Analytics
Distant Reading
Close Reading
Textähnlichkeit
Visualisierung
Daten
Manuskript
Forschungsprozess
Text
Werkzeuge

description: Dieser Beitrag stellt das visuelle Analysewerkzeug THeMSE (Text-Hermeneutic Multilevel Similarity Exploration) vor, welches die Untersuchung von Textähnlichkeit in den Handschriften der Briefe Hildegard von Bingens ermöglicht. Textähnlichkeiten können sowohl handschriftenübergreifend als auch handschriftenintern identifiziert werden. Dabei steht das Zusammenspiel von Close Reading und Distant Reading im Mittelpunkt sowie der Anspruch, hermeneutisches Arbeiten mit systematischer datenbasierter Analyse zu verbinden.
Olivierus przewalskii
Creators: name: Tang, Victoria
name: Liu, Zhenbang
name: Graham, Matthew R.
name: Fet, Victor
name: Kovařík, František
name: Šťáhlavský, František
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Olivierus
Olivierus przewalskii

description: Olivierus przewalskii (Birula, 1897)
(Figures 49–96, 99–100, 111–114, 117–118, 140–149, 155–156; Tables 1–3, 5)
description: Published as part of Tang, Victoria, Liu, Zhenbang, Graham, Matthew R., Fet, Victor, Kovařík, František & Šťáhlavský, František, 2024, Revision of the genus Olivierus in Xinjiang, China, with comments on Mesobuthus thersites (Scorpiones: Buthidae), pp. 1-58 in Euscorpius 383 on page 26, DOI: 10.5281/zenodo.10833863
Relativistic effects due to gravimagnetic moment of a rotating body
Creators: name: Ramírez, Walberto Guzmán
name: Deriglazov, Alexei A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We compute exact Hamiltonian (and corresponding Dirac brackets) for spinning particle with gravimagnetic moment $κ$ in an arbitrary gravitational background. $κ=0$ corresponds to the Mathisson-Papapetrou-Tulczyjew-Dixon (MPTD) equations. $κ=1$ leads to modified MPTD equations with reasonable behavior in the ultrarelativistic limit. So we study the modified equations in the leading post-Newtonian approximation. Rotating body with unit gravimagnetic moment has qualitatively different behavior as compared with MPTD body: A) If a number of gyroscopes with various rotation axes are freely traveling together, the angles between the axes change with time. B) For specific binary systems, gravimagnetic moment gives a contribution to frame-dragging effect with the magnitude, that turns out to be comparable with that of Schiff frame dragging.
description: 21 pages
Symmetric hyperbolic systems for a large class of fields in arbitrary dimension
Creators: name: Senovilla, José M. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Symmetric hyperbolic systems of equations are explicitly constructed for a general class of tensor fields by considering their structure as r-fold forms. The hyperbolizations depend on 2r-1 arbitrary timelike vectors. The importance of the so-called "superenergy" tensors, which provide the necessary symmetric positive matrices, is emphasized and made explicit. Thereby, a unified treatment of many physical systems is achieved, as well as of the sometimes called "higher order" systems. The characteristics of these symmetric hyperbolic systems are always physical, and directly related to the null directions of the superenergy tensor, which are in particular principal null directions of the tensor field solutions. Generic energy estimates and inequalities are presented too.
description: 24 pages, no figures
Income distribution and accessibilty to primary and secondary schools in Nigeria
Creators: name: Alabi, Reuben Adeolu
Publisher: name: Universität Bremen
Year: 2008
Subjects: subject: -
subject: 330

description: This study estimated the relationship between income, income inequality and accessibility to primary and secondary schools in Nigeria. It establishes that there is an unequal access to basic education between the poor and non poor in Nigeria. Household income is an important determinant of access to basic education in Nige- ria. Increase in access to basic education can redistribute income in Nigeria faster than increase in household income. The income redistribution effect of accessibility to sec- ondary school is greater than primary school. This study concludes that a policy aim- ing at equalisation of access to primary and secondary school education might help in reducing income inequality in Nigeria. It recommends among other things, policies and programmes that will increase access to basic education in Nigeria.
Relativistic Spacecraft Propelled by Directed Energy
Creators: name: Kulkarni, Neeraj
name: Lubin, Philip
name: Zhang, Qicheng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Achieving relativistic flight to enable extrasolar exploration is one of the dreams of humanity and the long term goal of our NASA Starlight program. We derive a fully relativistic solution for the motion of a spacecraft propelled by radiation pressure from a directed energy system. Depending on the system parameters, low mass spacecraft can achieve relativistic speeds; thereby enabling interstellar exploration. The diffraction of the directed energy system plays an important role and limits the maximum speed of the spacecraft. We consider 'photon recycling' as a possible method to achieving higher speeds. We also discuss recent claims that our previous work on this topic is incorrect and show that these claims arise from an improper treatment of causality.
Geometrical (2+1)-gravity and the Chern-Simons formulation: Grafting, Dehn twists, Wilson loop observables and the cosmological constant
Creators: name: Meusburger, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We relate the geometrical and the Chern-Simons description of (2+1)-dimensional gravity for spacetimes of topology $R\times S_g$, where $S_g$ is an oriented two-surface of genus $g>1$, for Lorentzian signature and general cosmological constant and the Euclidean case with negative cosmological constant. We show how the variables parametrising the phase space in the Chern-Simons formalism are obtained from the geometrical description and how the geometrical construction of (2+1)-spacetimes via grafting along closed, simple geodesics gives rise to transformations on the phase space. We demonstrate that these transformations are generated via the Poisson bracket by one of the two canonical Wilson loop observables associated to the geodesic, while the other acts as the Hamiltonian for infinitesimal Dehn twists. For spacetimes with Lorentzian signature, we discuss the role of the cosmological constant as a deformation parameter in the geometrical and the Chern-Simons formulation of the theory. In particular, we show that the Lie algebras of the Chern-Simons gauge groups can be identified with the (2+1)-dimensional Lorentz algebra over a commutative ring, characterised by a formal parameter $Θ_Λ$ whose square is minus the cosmological constant. In this framework, the Wilson loop observables that generate grafting and Dehn twists are obtained as the real and the $Θ_Λ$-component of a Wilson loop observable with values in the ring, and the grafting transformations can be viewed as infinitesimal Dehn twists with the parameter $Θ_Λ$.
description: 50 pages, 6 eps figures
Ethical Artificial Intelligence - An Open Question
Creators: name: Pavaloiu, Alice
name: Kose, Utku
Publisher: name: arXiv
Year: 2017
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Artificial Intelligence (AI) is an effective science which employs strong enough approaches, methods, and techniques to solve unsolvable real world based problems. Because of its unstoppable rise towards the future, there are also some discussions about its ethics and safety. Shaping an AI friendly environment for people and a people friendly environment for AI can be a possible answer for finding a shared context of values for both humans and robots. In this context, objective of this paper is to address the ethical issues of AI and explore the moral dilemmas that arise from ethical algorithms, from pre set or acquired values. In addition, the paper will also focus on the subject of AI safety. As general, the paper will briefly analyze the concerns and potential solutions to solving the ethical issues presented and increase readers awareness on AI safety as another related research interest.
description: 13 pages, 3 figures
Power Spectra in Spacetime Noncommutative Inflation
Creators: name: Huang, Qing-Guo
name: Li, Miao
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: String/M theory inspires an uncertainty relation between space and time which deviates from general relativity. It is possible to explore this deviation from cosmological observations, in particular from the CMB fluctuation spectrum. This paper extends some previous observations to more general inflation schemes, we find that the noncommutative spacetime effects always suppress the power spectrum, of both the scalar and tensor perturbations, and may provide a large enough running of the spectral index to fit the WMAP data in the inflation model.
description: 19 pages, 6 figures, harvmac; 2 references added; only references added; Accepted for publication in Nucl. Phys. B
Anexo 1. Competencias narrativas y estéticas
Creators: name: Vizcaino, Arantxa
Publisher: name: figshare
Year: 2018
Subjects: subject: Education
subject: 130101 Continuing and Community Education
subject: FOS: Educational sciences

description: Anexo 1 sobre 'competencias narrativas y estéticas' aplicado metodológicamente en el artículo sobre booktubers.
Ricinoides afzelii
Creators: name: Botero-Trujillo, Ricardo
name: Sain, Colby E.
name: Prendini, Lorenzo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ricinulei
Ricinoididae
Ricinoides
Ricinoides afzelii

description: Ricinoides afzelii (Thorell, 1892)   Figures 5, 6A, 7A, 9A, 11A, 12A, 14A, 15A,
description: Published as part of Botero-Trujillo, Ricardo, Sain, Colby E. & Prendini, Lorenzo, 2021, Systematics Of The " Giant " Ricinulei (Ricinoididae: Ricinoides) Of West Africa, With Descriptions Of Five New Species And Comparative Morphology Of The Male Copulatory Apparatus, pp. 1-68 in Bulletin of the American Museum of Natural History 2021 (448) on page 10, DOI: 10.1206/0003-0090.448.1.1, http://zenodo.org/record/10833994
FERRAMENTAS DE GAMIFICAÇÃO NA PLATAFORMA MOODLE
Creators: name: Mourato, Fausto
name: Piteira, Martinha
Publisher: name: Interacções
Year: 2019

description: A utilização de abordagens que contribuam para envolver e motivar os estudantes com as atividades de aprendizagem são cada vez mais necessárias. Das mais variadas abordagens tem-se destacado, nos últimos anos, a utilização da gamificação. O termo gamificação (gamification, na sua designação original) foi utilizado pela primeira vez em 2010 em conferências nas áreas relacionadas com jogos. A definição do conceito surgiu em 2011 como sendo a utilização de elementos de jogo em contextos de não jogo (Deterding, Dixon, Khaled, & Nacke, 2011a). A gamificação tem sido utilizada em diversos contextos, nomeadamente educação, saúde, política e desporto, entre outros (Kapp, Blair, & Mesch, 2013). No presente artigo focamo-nos na sua utilização no contexto da educação, em particular, a sua relevância na aprendizagem online. Nesse sentido, efetuamos uma revisão do conceito de gamificação e dos principais trabalhos relacionados com a sua aplicação em contexto educativo. A integração da gamificação nos sistemas de aprendizagem online deverá seguir um processo de desenho claro e formal. Assim, apresentamos abordagens de integração da gamificação suportadas em frameworks teóricas. Posteriormente, exploramos os princípios de desenho educacionais existentes na plataforma Moodle para a implementação de experiências de aprendizagem gamificadas, conjugadas com a utilização de componentes, nomeadamente pontos, medalhas, tabelas de classificação e barras de progresso. Finalmente, concluímos com uma breve análise ao potencial e riscos associados na utilização dos elementos referidos, em contexto de aprendizagem online, e apresentamos algumas reflexões sobre possíveis abordagens para a sua utilização em experiências gamificadas.
description: Interacções, Vol 15 No 52 (2019): Práticas Educativas no Ensino Superior
Thermoelectric transport parallel to the planes in a multilayered Mott-Hubbard heterostructure
Creators: name: Zlatić, Veljko
name: Freericks, J. K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a theory for charge and heat transport parallel to the interfaces of a multilayer (ML) in which the interfacing gives rise the redistribution of the electronic charges. The ensuing electrical field couples self-consistently to the itinerant electrons, so that the properties of the ML crucially depend on an interplay between the on-site Coulomb forces and the long range electrostatic forces. The ML is described by the Falicov-Kimball model and the self-consistent solution is obtained by iterating simultaneously the DMFT and the Poisson equations. This yields the reconstructed charge profile, the electrical potential, the planar density of states, the transport function, and the transport coefficients of the device. We find that a heterostructure built of two Mott-Hubbard insulators exhibits, in a large temperature interval, a linear conductivity and a large temperature-independent thermopower. The charge and energy currents are confined to the central part of the ML. Our results indicate that correlated multilayers have the potential for applications; by tuning the band shift and the Coulomb correlation on the central planes, we can bring the chemical potential in the immediate proximity of the Mott-Hubbard gap edge and optimize the transport properties of the device. In such a heterostructure, a small gate voltage can easily induce a MI transition. This switching does not involve the diffusion of electrons over macroscopic distances and it is much faster than in ordinary semiconductors. Furthermore, the right combination of strongly correlated materials with small ZT can produce, theoretically at least, a heterostructure with a large ZT.
description: 15 pages, 6 figures
A Partially Gauged Fixed Hamiltonian for Scalar Field Collapse
Creators: name: Daghigh, R. G.
name: Gegenberg, J.
name: Kunstatter, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive a partially gauge fixed Hamiltonian for black hole formation via real scalar field collapse. The class of models considered includes many theories of physical interest, including spherically symmetric black holes in $D$ spacetime dimensions. The boundary and gauge fixing conditions are chosen to be consistent with generalized Painleve-Gullstrand coordinates, in which the metric is regular across the black hole future horizon. The resulting Hamiltonian is remarkably simple and we argue that it provides a good starting point for studying the quantum dynamics of black hole formation.
description: 13 pages
Heat-Assisted Multiferroic Solid-State Memory
Creators: name: Lepadatu, Serban
name: Vopson, Melvin M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A heat-assisted multiferroic solid-state memory design is proposed and analysed, based on a PbNbZrSnTiO3 antiferroelectric substrate and Ni81Fe19 magnetic free layer. Information is stored as magnetisation direction in the free layer of a magnetic tunnel junction element. The bit writing process is contactless and relies on triggering thermally activated magnetisation switching of the free layer towards a strain-induced anisotropy easy axis. A stress is generated using the antiferroelectric substrate by voltage-induced antiferroelectric to ferroelectric phase change, and this is transmitted to the magnetic free layer by strain-mediated coupling. The thermally activated strain-induced magnetisation switching is analysed here using a three-dimensional, temperature-dependent magnetisation dynamics model, based on simultaneous evaluation of the stochastic Landau Lifshitz Bloch equation and heat flow equation, together with stochastic thermal fields and magnetoelastic contributions. The magnetisation switching probability is calculated as a function of stress magnitude and maximum heat pulse temperature. An operating region is identified, where magnetisation switching always occurs, with stress values ranging from 80 to 180 MPa, and maximum temperatures normalised to the Curie temperature ranging from 0.65 to 0.99.
Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS
Creators: name: Balogh, Michael
name: Eke, Vince
name: Miller, Chris
name: Lewis, Ian
name: Bower, Richard
name: Couch, Warrick
name: Nichol, Robert
name: Bland-Hawthorn, Joss
name: Baldry, Ivan K.
name: Baugh, Carlton
name: Bridges, Terry
name: Cannon, Russell
name: Cole, Shaun
name: Colless, Matthew
name: Collins, Chris
name: Cross, Nicholas
name: Dalton, Gavin
name: De Propris, Roberto
name: Driver, Simon P.
name: Efstathiou, George
name: Ellis, Richard S.
name: Frenk, Carlos S.
name: Glazebrook, Karl
name: Gomez, Percy
name: Gray, Alex
name: Hawkins, Edward
name: Jackson, Carole
name: Lahav, Ofer
name: Lumsden, Stuart
name: Maddox, Steve
name: Madgwick, Darren
name: Norberg, Peder
name: Peacock, John A.
name: Percival, Will
name: Peterson, Bruce A.
name: Sutherland, Will
name: Taylor, Keith
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the observed correlation between galaxy environment and H-alpha emission line strength, using volume-limited samples and group catalogues of 24968 galaxies drawn from the 2dF Galaxy Redshift Survey (Mb
description: Final version
Mexiko im Kontext der Globalisierung - Ergebnisse eines Globalisierungsindex für Entwicklungsländer
Creators: name: Ebenthal, Sebastian
Publisher: name: Universität Bremen
Year: 2008
Subjects: subject: -
subject: 330

description: In diesem Papier wird auf Basis einer nicht redundanten Definition und relevanten Theorien der Globalisierung ein mehrdimensionaler Globalisierungsindex für Entwicklungsländer eingeführt. In einem Folgeschritt wird mit Hilfe der entwickelten Methode der Einfluss von Globalisierung, assoziiert mit dem Globalisierungsindex für Entwicklungsländer, auf das Fallstudienland Mexiko analysiert. Hierzu wird ein Ranking von 105 Entwicklungsländern präsentiert und ausgewertet und mit Hilfe von Zeitreihen in einer linearen Mehrfachregression der Einfluss von Globalisierung auf Wachstum in Mexiko untersucht. Die Ergebnisse werden in den ökonomischen und politischen Kontext des Landes eingeordnet. Es wird die These aufgestellt und untermauert, dass entgegen gängiger Annahmen der OECD die Globalisierung im aktuellen politischen Kontext des Landes nicht oder sogar signifikant negativ zu ökonomischem Wachstum in Mexiko zwischen 1996 und 2005 beigetragen hat. In einem letzten Schritt werden auf Basis der Ergebnisse Politikempfehlungen ausgesprochen, um die Globalisierung im Sinne Mexikos nutzen zu können.
EDITORIAL
Creators: name: Loureiro, Ana
name: Rocha, Dina
name: Cardona, Maria João
Publisher: name: Interacções
Year: 2019

description: Em Portugal, nos últimos anos, foi criada o Congresso Nacional de Práticas Pedagógicas no Ensino Superior (CNaPPES), com o patrocínio da Secretaria de Estado do Ensino Superior, que tem mobilizado a partilha de pesquisas e práticas sobre a pedagogia no ensino superior. Na maioria das Universidades e Institutos Politécnicos têm também vindo a ser criados espaços de apoio ao desenvolvimento da formação e investigação para dar resposta a docentes e instituições. Neste contexto, foi organizado este número temático da Revista Interacções em que são partilhadas algumas práticas educativas realizadas com a preocupação de compreender que características e estratégias inovadoras em sala de aula contribuem para um maior sucesso das aprendizagens por parte do/as estudantes.
description: Interacções, Vol 15 No 52 (2019): Práticas Educativas no Ensino Superior
FACILITY USAGE CLOUD COMPUTING FOR THE CREATION OF DOCUMENTS AND PRESENTATIONS
Creators: name: Pardede, Akim Manaor Hara
Publisher: name: figshare
Year: 2018
Subjects: subject: 80306 Open Software
subject: FOS: Computer and information sciences

description: Cloud computing is a technology that utilizes internet services using the central server that has the virtual nature with the aim of keeping data and applications. The presence of cloudcomputing will obviously give rise to changes in the workings of the information technology systems in an organization. This is because the concept of cloud computing throughvirtualization, standardization and other fundamental features can reduce the cost of information technology (IT), simplifying the management of information technology services,and accelerate service delivery data. Cloud computing architecture generally consists of (1) Infrastructure as a Service (IaaS) (2) Platform as a Service (PaaS) and (3) Software as aService (SaaS). In this journal exemplified an application of Cloud Computing for the manufacture and storage of data documents or presentations using the facilities of GoogleDocs.
Statistical Constraints on State Preparation for a Quantum Computer
Creators: name: Kak, Subhash
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computing algorithms require that the quantum register be initially present in a superposition state. To achieve this, we consider the practical problem of creating a coherent superposition state of several qubits. Owing to considerations of quantum statistics, this requires that the entropy of the system go down. This, in turn, has two practical implications: (i) the initial state cannot be controlled; (ii) the temperature of the system must be reduced. These factors, in addition to decoherence and sensitivity to errors, must be considered in the implementation of quantum computers.
description: 7 pages; the final published version
Ricinoides atewa Naskrecki 2008
Creators: name: Botero-Trujillo, Ricardo
name: Sain, Colby E.
name: Prendini, Lorenzo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ricinulei
Ricinoididae
Ricinoides
Ricinoides atewa

description: Ricinoides atewa Naskrecki, 2008   Figures 5, 6B, 7B, 9B, 10B, 11B, 12B, 14B, 15B,
description: Published as part of Botero-Trujillo, Ricardo, Sain, Colby E. & Prendini, Lorenzo, 2021, Systematics Of The " Giant " Ricinulei (Ricinoididae: Ricinoides) Of West Africa, With Descriptions Of Five New Species And Comparative Morphology Of The Male Copulatory Apparatus, pp. 1-68 in Bulletin of the American Museum of Natural History 2021 (448) on page 19, DOI: 10.1206/0003-0090.448.1.1, http://zenodo.org/record/10833994
Invariance Pressure for Control Systems
Creators: name: Colonius, Fritz
name: Santana, Alexandre J.
name: Cossich, João A. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93B52, 37B40

description: Notions of invariance pressure for control systems are introduced based on weights for the control values. The equivalence is shown between inner invariance pressure based on spanning sets of controls and on invariant open covers, respectively. Furthermore, a number of properties of invariance pressure are derived and it is computed for a class of linear systems.
description: 26 pages
Additional file 2 of hUC-EVs-ATO reduce the severity of acute GVHD by resetting inflammatory macrophages toward the M2 phenotype
Creators: name: Su, Yan
name: Sun, Xueyan
name: Liu, Xiao
name: Qu, Qingyuan
name: Yang, Liping
name: Chen, Qi
name: Liu, Fengqi
name: Li, Yueying
name: Wang, Qianfei
name: Huang, Bo
name: Huang, Xiao-Hui
name: Zhang, Xiao-Jun
Publisher: name: figshare
Year: 2022
Subjects: Biochemistry
Space Science
Medicine
Cell Biology
Pharmacology
Biotechnology
Developmental Biology
Marine Biology
Cancer
Science Policy

description: Additional file 2. All primer sequences used in the qPCR process.
Q-LET - Quick Lensing Estimation Tool - An application to SN2003es
Creators: name: Gunnarsson, Christofer
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Q-LET is a FORTRAN 77 code that enables a quick estimate of the gravitational lensing effects on a point- or an extended source. The user provided input consists of the redshifts, angular positions relative to the source, mass or velocity dispersion estimate and halo type for the lens galaxies. The considered halo types are the Navarro-Frenk-White and the Singular Isothermal Sphere. The code uses the so-called multiple lens-plane method to find the magnification and intrinsic shape of the source. This method takes into account the multiple deflections that may arise when several mass accumulations are situated at different redshifts close to the line-of-sight. The Q-LET code is applied to the recently discovered supernova, SN2003es, which is likely to be of Type Ia as its host galaxy is classified as an elliptical. We find that SN2003es is likely to have been significantly magnified by gravitational lensing and that this should be considered in high-z studies if this SN is to be used to determine the cosmological parameters. Q-LET was motivated by the supernova searches, where lensing can be a problem, but it can also be applied to any simple lens system where a quick estimate is wanted, e.g. the single lens case.
description: 16 pages, 5 figures. Submitted to JCAP. Software available at http://www.physto.se/~cg/qlet/qlet.htm
title: 03_0923
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
FACILITY USAGE CLOUD COMPUTING FOR THEbCREATION OF DOCUMENTS AND PRESENTATIONS.
Creators: name: Pardede, Akim Manaor Hara
Publisher: name: figshare
Year: 2018
Subjects: subject: 80306 Open Software
subject: FOS: Computer and information sciences

description: Cloud computing is a technology that utilizes internet services using the central server that has the virtual nature with the aim of keeping data and applications. The presence of cloud computing will obviously give rise to changes in the workings of the information technology systems in an organization. This is because the concept of cloud computing through virtualization, standardization and other fundamental features can reduce the cost of information technology (IT), simplifying the management of information technology services, and accelerate service delivery data. Cloud computing architecture generally consists of (1) Infrastructure as a Service (IaaS) (2) Platform as a Service (PaaS) and (3) Software as a Service (SaaS). In this journal exemplified an application of Cloud Computing for the manufacture and storage of data documents or presentations using the facilities of Google Docs.
A CONDUÇÃO DOS ESTUDANTES PELOS CAMINHOS DA INVESTIGAÇÃO CIENTÍFICA
Creators: name: Pinheiro, Margarida M
Publisher: name: Interacções
Year: 2019

description: O Ensino Superior está perante a pressão de um exercício de flexibilidade ao nível das práticas pedagógicas utilizadas pelos seus docentes. No âmbito dos mestrados, a produção de investigação científica é um elemento incontornável no percurso académico dos estudantes. No presente estudo, experiência acumulada entre a teoria e a prática em sala de aula, levou-nos a partilhar, em substância, práticas de algumas das questões que consideramos importantes na condução dos estudantes pelos caminhos da investigação científica: dificuldades dos estudantes ao nível da sua integração no curso, dificuldades na escolha do tema necessário à concretização de uma dissertação, relatório de estágio ou trabalho de projeto, e dificuldades na preparação e escrita de um trabalho académico.
description: Interacções, Vol 15 No 52 (2019): Práticas Educativas no Ensino Superior
Detection and Classification of Historic Watermarks using neural networks and nearest neighbor search
Creators: name: Pfaff, Sebastian
name: Beriozchin, Evghenii
name: Weyh, Paulina
Publisher: name: Zenodo
Year: 2024
Subjects: DHd2024
Posterpräsentation
Watermarks
Neural Network
Watermark recognition
Reverse Image search
cycleGAN
Datenerkennung
Bilderfassung
Strukturanalyse
Identifizierung
Computer
Daten

description: Handcrafted European papers from the 13th to 19th centuries often feature watermarks. The papermaker added these to make their paper more recognizable. Today these watermarks play a vital role in dating and verifying historical documents, offering valuable insights into paper origins and production. We present a new automated method for finding similar watermarks based on the digitized collections of the German Museum of Books and Writing and the German National Library. Unlike previous approaches, which relied on image processing or neural network classification, our approach utilizes a CycleGAN neural network to generate artificial watermark sketches from scanned historical papers. The sketches are compared using a pre-trained ResNet18 neural network and the Spotify Annoy algorithm for efficient nearest neighbor search in the database. Our pipeline achieves a 63% accuracy in finding similar watermarks within the 50 nearest neighbors from a database of over 6200 photographed watermarks and traced watermarks.
ESTUDANTES DO ENSINO SUPERIOR IGUALDADES VERSUS DIFERENÇAS
Creators: name: Rodrigues, Elsa
Publisher: name: Interacções
Year: 2019

description: Ao olhar para os atuais estudantes do Ensino Superior Politécnico, verificamos que, independentemente das origens socias e étnicas, os seus comportamentos em determinados momentos se intersectam nas idades, no saber estar, nas escolhas, na motivação, na infoexclusão, entre outras. As Instituições de Ensino Superior Politécnico, oferecem vários cursos de diferentes áreas em diferentes ciclos de estudo, tais como os Cursos Técnico Superior Profissional (CTeSP) (2 anos curriculares), Licenciaturas (3 anos curriculares) e Mestrados (2 anos curriculares). Este estudo abarca somente os alunos da Escola Superior de Tecnologias e Gestão (ESTIG), de alguns cursos, a saber: Tecnologias Web e Dispositivos Móveis (TWDM), Redes e Sistemas Informáticos (RSI), Engenharia Informática, Solicitadoria(P), Solicitadoria (EaD), Mestrado em segurança e Higiene do Trabalho, Mestrado Segurança Informática. A escolha dos cursos de CTeSP e da licenciatura em Engenharia Informática baseou-se nas competências digitais; no caso de Solicitadoria (P e EaD) na diferença na metodologia de ensino; no que concerne aos Mestrados, no tempo de funcionamento dos mesmos. Iremos perceber as escolhas destes alunos face aos 3 ciclos de estudo, as licenciaturas e os CTeSP. Nos 3 ciclos de estudo, analisaremos características, como: idade, formação anterior, motivação, desmotivação e métodos de trabalho. Todas estas variáveis são preponderantes para o sucesso destes estudantes, ou seja, para que alcancem o fim do ciclo de estudos.
description: Interacções, Vol 15 No 52 (2019): Práticas Educativas no Ensino Superior
Quantum-State Engineering of Multiple Trapped Ions for Center-of-Mass Mode
Creators: name: Zeng, Hao-Sheng
name: Zhu, Xi-Wen
name: Gao, Ke-Lin
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to generate a superposition with arbitrary coefficients on a line in phase space for the center-of-mass vibrational mode of N ions by means of isolating all other spectator vibrational modes from the center-of-mass mode. It can be viewed as the generation of previous methods for preparing motional states of one ion. For large number of ions, we need only one cyclic operatin to generate such a superposition of many coherent states.
description: 14 pages, revtex
Wer mit wem … und wo? Eine szientometrische Analyse der DHd-Abstracts 2014 - 2022
Creators: name: Borst, Janos
name: Burghardt, Manuel
name: Piontkowitz, Vera
name: Klähn, Jannis
Publisher: name: Zenodo
Year: 2024
Subjects: DHd2024
Posterpräsentation
Szientometrie
Koautorenschaftsanalyse
Wissenschaftsforschung
Räumliche Analyse
Netzwerkanalyse
Visualisierung
Forschungsprozess
Text

description: In diesem Poster stellen wir einige Ergebnisse einer szientometrischen Analyse der DHd-Abstracts 2014 - 2022 vor. Dazu gehören u.a. Koautor:innenschaftsnetzwerke, eine Liste der am häufigsten im Rahmen der DHd zitierten Quellen sowie Informationen zu unterschiedlichen DH-Standorten und deren Publikationsfreudigkeit im Rahmen der DHd.
Pipiza luteibarba Vujic, Radenkovic & Polic 2008
Creators: name: Prokhorov, A. V.
name: Popov, G. V.
name: Shparyk, V. Yu.
name: Vasilyeva, Yu. S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Pipiza
Pipiza luteibarba

description: Pipiza luteibarba Vujić, Radenković & Polić, 2008 (figs 29–34)
M a t e r i a l e x a m i n e d. Ukraine. Chernivtsi Region: Grushivtsi env., 48.594196 N 26.786242 E, edge of oak forest, 4.05.2008, 1 Ơ (N. Lishchuk).
 D i s t r i b u t i o n. Austria, Czechia, Greece (Samos), Serbia (Vujić et al., 2008; Vujić et al., 2013; Speight, 2020; Vujić & Milić, 2021; Wakkie, 2021); Ukraine (first record).
This European localized endemic is regarded as endangered at the global and European level (Vujić & Milić, 2021).
 D i a g n o s i s. Species of the Pipiza luteitarsis group to which P. luteibarba belongs are characterized by lacking a pair of ventral longitudinal ridges at the distal end of hind femora (in other Palaearctic Pipiza species, distal end of hind femora ventrally with a pair of distinct, longitudinal ridges) and ventral part of the postpedicel reddish (in other Pipiza species, postpedicel dark). In the male genitalia, lower gonocercus of hypandrium is very short, about 1/3 length of theca (in other Pipiza species, hypandrium always has long lower gonocercus, in lateral view it is about 3/4 length of theca) (Vujić et al., 2008; Vujić et al., 2013). The other known European species of the Pipiza luteitarsus group are P. accola, P. luteitarsis, and P. quadrimaculata.
 The male of Pipiza luteibarba differs from P. quadrimaculata (Panzer, 1802) male by antennae inserted in upper half of the head (lateral view) (in P. quadrimaculata, antennae inserted just below middle of the head) and abdomen elongated (in P. quadrimaculata, abdomen broadly ovoid). From the most similar P. accola Violovitsh, 1985 and P. luteitarsis Zetterstedt, 1843, P. luteibarba can be distinguished by face with pale pile (figs 31–33) (in other species, face predominantly with black pile; however, we have some specimens of P. accola in which face predominantly with pale pile); postpedicel elongated, almost 1.5 times longer than wide (figs 32–33) (in other species, postpedicel short, oval, wider than long); tarsi yellow, only metatarsus of hind legs darkened (figs 29, 33) (in other species, tarsi of all legs partly darkened or at least of middle and hind legs); tergite 2 with long hairs that stick out (in other species, tergite 2 without long hairs sticking out); basal part of surstylus with well-developed semicircular lobe (in other species, basal part of surstylus with reduced (P. luteitarsis) or with small basal semicircular lobe, as in P. accola). The genitalia of P. luteibarba have been prepared and compared with figures in Vujić et al. (2013).
description: Published as part of Prokhorov, A. V., Popov, G. V., Shparyk, V. Yu. & Vasilyeva, Yu. S., 2023, New Records Of Hoverflies (Diptera, Syrphidae) From Ukraine. Vi, pp. 125-142 in Zoodiversity 57 (2) on pages 131-132, DOI: 10.15407/zoo2023.02.125, http://zenodo.org/record/10834023
Interacting dark energy in $f(R)$ gravity
Creators: name: Poplawski, Nikodem J.
Publisher: name: arXiv
Year: 2006
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: The field equations in $f(R)$ gravity derived from the Palatini variational principle and formulated in the Einstein conformal frame yield a cosmological term which varies with time. Moreover, they break the conservation of the energy--momentum tensor for matter, generating the interaction between matter and dark energy. Unlike phenomenological models of interacting dark energy, $f(R)$ gravity derives such an interaction from a covariant Lagrangian which is a function of a relativistically invariant quantity (the curvature scalar $R$). We derive the expressions for the quantities describing this interaction in terms of an arbitrary function $f(R)$, and examine how the simplest phenomenological models of a variable cosmological constant are related to $f(R)$ gravity. Particularly, we show that $Λc^2=H^2(1-2q)$ for a flat, homogeneous and isotropic, pressureless universe. For the Lagrangian of form $R-1/R$, which is the simplest way of introducing current cosmic acceleration in $f(R)$ gravity, the predicted matter--dark energy interaction rate changes significantly in time, and its current value is relatively weak (on the order of 1% of $H_0$), in agreement with astronomical observations.
description: 8 pages; published version
EDUCAÇÃO A DISTÂNCIA E eLEARNING NO ENSINO SUPERIOR EM PORTUGAL.
Creators: name: Moreira, J. António Marques
name: Silva, Séfora
name: Alcoforado, Luís
Publisher: name: Interacções
Year: 2019

description: Na atual sociedade do conhecimento e em rede, a educação, a capacitação tecnológica e as competências digitais são a chave para a plena integração do cidadão. Em Portugal, como na maioria dos países europeus, o direito à educação é uma garantia, mesmo para os cidadãos que se encontram reclusos. A utilização de meios digitais é prevista e encorajada pelas diretrizes internacionais e pelas leis portuguesas, no entanto, a prática está longe de funcionar, com muitas limitações. Para responder ao desafio deste público estudante do ensino superior, respondendo de forma individualizada e flexível às suas necessidades, a Universidade Aberta (UAb) e a Direção Geral de Reinserção e Serviços Prisionais (DGRSP) criaram o Campus Virtual Educonline@pris. Pedagogicamente inspirado pelo modelo de aprendizagem da UAb, este Campus procura responder às necessidades educativas específicas destes estudantes, respeitando as limitações legais inerentes à sua condição. Neste texto, procura-se, pois, apresentar as principais etapas, que estão em curso, para a criação e desenvolvimento deste Campus que se assume como uma academia de educação, formação, empregabilidade e cidadania digital.
description: Interacções, Vol 15 No 52 (2019): Práticas Educativas no Ensino Superior
Quo vadis digitised newspapers and radio? Next steps for the integration of western European collections via impresso II.
Creators: name: Bunout, Estelle
name: Düring, Marten
name: Clematide, Simon
name: Ehrmann, Maud
name: Guido, Daniele
name: Ruppen Coutaz, Rapahëlle
name: Beelen, Kaspar
Publisher: name: Zenodo
Year: 2024
Subjects: DHd2024
Posterpräsentation
digitised newspapers
radio
silo breaking
Inhaltsanalyse
Webentwicklung
Visualisierung
benannte Entitäten (named entities)
Forschungsprozess

description: Over the past few years, interdisciplinary research projects such as Oceanic Exchanges, Living with Machines, Numapresse or NewsEye, all worked towards the semantic enrichment, integration and computational analysis of historical newspaper collections across institutional, national and linguistic boundaries. Against this background, we propose to present a new project: "impresso - Media Monitoring of the Past II. Beyond Borders: Connecting Historical Newspapers and Radio" which builds on the first impresso project that compiled and semantically enriched a corpus of Swiss and Luxembourgish newspapers. The second project will expand the corpus to a Western European scale, and bring together sources from various collections and languages. It aims at creating support for the research community by offering relevant data and interfaces for the exploration of its collections. We hope to reach out to researchers interested in contributing to the paradigm shift in the processing, representation and analysis of historical document collections.
Figure S2 from Molecular phylogeny of Culex subgenus Melanoconion (Diptera: Culicidae) based on nuclear and mitochondrial protein-coding genes
Creators: name: Torres-Gutierrez, Carolina
name: Tatiane M. P. De Oliveira
name: Emerson, Kevin J.
name: Bergo, Eduardo Sterlino
name: Sallum, Maria Anice Mureb
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Molecular Biology
subject: 60301 Animal Systematics and Taxonomy
subject: FOS: Biological sciences
subject: 60310 Plant Systematics and Taxonomy

description: Figure S2. Maximum likelihood based phylogenetic tree obtained from a concatenated matrix CAD+HB (97 specimens) of Culex (Melanoconion) species with aLRT statistic values as node support.
The XMM--NEWTON Omega Project: II.Cosmological implications from the high redshift L-T relation of X-ray clusters
Creators: name: Vauclair, S. C.
name: Blanchard, A.
name: Sadat, R.
name: Bartlett, J. G.
name: Bernard, J. -P.
name: Boer, M.
name: Giard, M.
name: Lumb, D. H.
name: Marty, P.
name: Nevalainen, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The evolution with redshift of the temperature-luminosity relation of X-ray galaxy clusters is a key ingredient to break degeneracies in the interpretation of X-ray clusters redshift number counts. We therefore take advantage of the recent measurements of the temperature-luminosity relation of distant clusters observed with XMM-Newton and Chandra satellites to examine theoretical number counts expected for different available X-rays cluster samples, namely the RDCS, EMSS, SHARC, 160deg^2 and the MACS at redshift greater than 0.3. We derive these counts without any adjustment, using models previously normalized to the local temperature distribution function and to the high-z (z = 0.33) TDF. We find that these models having Omega_M in the range [0.85-1.] predict counts in remarkable agreement with the observed counts in the different samples. We illustrate that this conclusion is weakly sensitive to the various ingredients of the modeling. Therefore number counts provide a robust evidence of an evolving population. A realistic flat low density model (Omega_M = 0.3), normalized to the local abundance of clusters is found to overproduce cluster abundance at high redshift (above z = 0.5) by nearly an order of magnitude. This result is in conflict with the popular concordance model. The conflict could indicate a deviation from the expected scaling of the M-T relation with redshift.
description: 5 pages, 7 figures, A&A Letters, accepted