cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
REVISION OF THE TEETH OF THE GENUS CARCHARHINUS (ELASMOBRANCHII; CARCHARHINIDAE) FROM THE PLIOCENE OF TUSCANY, ITALY
Creators: name: MARSILI, STEFANO
Publisher: name: Università degli Studi di Milano
Year: 2007

description: The great similar tooth morphologies that characterized the sharks of the genus Carcharhinus have suggested that the Neogene Mediterranean Sea were inhabited by only one or two widespread carcharhinid taxa, Carcharhinus egertoni and C. priscus. The first Mediterranean Pliocene record of five new shark species included into Carcharhinus, C. aff. brachyurus, C. falciformis, C. leucas, C. perezi, and C. plumbeus, have been identified by the review of some shark teeth from Tuscany (Italy) and housed in the Italian Museums of the Universities of Firenze, Bologna, and Pisa. Moreover, the Mediterranean records of the two Recent C. longimanus and C. obscurus has been confirmed too. Paleobiogeographic and palaeoecologic analysis have been produced on the presence of some species absent or doubtful for the extant Mediterranean shark community.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 1
The past and future obliquity of Saturn as Titan migrates
Creators: name: Saillenfest, Melaine
name: Lari, Giacomo
name: Boué, Gwenaël
name: Courtot, Ariane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Aims: It has recently been shown that the fast migration of Titan could be responsible for the current 26.7°-tilt of Saturn's spin axis. We aim to quantify the level of generality of this result and to measure the most likely sets of parameters. We also aim to determine the obliquity that Saturn will reach in the future. Methods: We explore a broad range of parameters and propagate numerically the orientation of Saturn's spin axis both backward and forward in time. Results: In the adiabatic regime, the likelihood of reproducing Saturn's current spin-axis orientation is maximised for primordial obliquities between about 2° and 7°. For a slightly faster migration than expected from radio-science experiments, non-adiabatic effects even allow for exactly null primordial obliquities. Starting from such small tilts, Saturn's spin axis can evolve up to its current state provided that: i) the semi-major axis of Titan changed by more than 5% of its current value, and ii) its migration rate does not exceed 10 times the nominal measured rate. In comparison, observational data suggest that the increase of Titan's semi-major axis exceeded 50% over 4 Gyrs, and error bars imply that the current migration rate is unlikely to be larger than 1.5 times its nominal value. Conclusions: If Titan did migrate substantially before today, tilting Saturn from a small obliquity is not only possible, but it is the most likely scenario. Saturn's obliquity is expected to be still increasing today and could exceed 65° in the future. Maximising the likelihood would also put strict constraints on Saturn's polar moment of inertia. However, the possibility remains that Saturn's primordial obliquity was already large, for instance as a result of a massive collision. The unambiguous distinction between these two scenarios would be given by a precise measure of Saturn's polar moment of inertia.
description: Published in Astronomy and Astrophysics. Some typographical errors have been corrected
Fluids at the Nanoscale: from continuum to sub-continuum transport
Creators: name: Kavokine, Nikita
name: Netz, Roland R.
name: Bocquet, Lydéric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Nanofluidics has firmly established itself as a new field in fluid mechanics, as novel properties have been shown to emerge in fluids at the nanometric scale. Thanks to recent developments in fabrication technology, artificial nanofluidic systems are now being designed at the scale of biological nanopores. This ultimate step in scale reduction has pushed the development of new experimental techniques and new theoretical tools, bridging fluid mechanics, statistical mechanics and condensed matter physics. This review is intended as a toolbox for fluids at the nanometre scale. After presenting the basic equations that govern fluid behaviour in the continuum limit, we will show how these equations break down and new properties emerge in molecular scale confinement.
TAXONOMIC NOTES ON SOME CHEILOSTOME BRYOZOA FROM THE PLIOCENE OF THE WESTERN EMILIA REGION (N ITALY)
Creators: name: PIZZAFERRI, CLAUDIO
name: BERNING, BJÖRN
Publisher: name: Università degli Studi di Milano
Year: 2007

description: From a well-preserved fossil assemblage of the mid-Pliocene (Piacenzian) Monte Padova section near Castell’Arquato (northern Italy), three cheilostome bryozoan species are described and figured. The dome-shaped, free-living Cupuladria bugei Reguant, described from the Pliocene of the eastern Atlantic, is characterised using SEM photography for the first time, and the present finding is the first from the Mediterranean realm. Similarly, the encrusting unilaminar Cleidochasmidra canakkalense Ünsal & d'Hondt, occasionally occurring independently of a substrate, was described from the Recent Mediterranean Sea but hitherto lacked a thorough SEM-based description. It has previously been reported only once from the Pliocene of Italy. Plesiocleidochasma mediterraneum Chimenz Gusso & Soule, occurring as uni- to plurilaminar encrustations or free of a substrate, was only recently described from the Mediterranean Sea while our finding represents its first fossil occurrence. For the latter two species no information on ancestrula morphology and early colony development was, until now, available from the existing literature.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 1
Axially open nonradiative structures: an example of single-mode resonator based on the sample holder
Creators: name: Annino, G.
name: Cassettari, M.
name: Martinelli, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The concept of nonradiative dielectric resonator is generalized in order to include axially open configurations having rotational invariance. The resulting additional nonradiative conditions are established for the different resonance modes on the basis of their azimuthal modal index. An approximate chart of the allowed dielectric and geometrical parameters for the TE011 mode is given. A practical realization of the proposed device based on commercial fused quartz tubes is demonstrated at millimeter wavelengths, together with simple excitation and tuning mechanisms. The observed resonances are characterized in their basic parameters, as well as in the field distribution by means of a finite element method. The predictions of the theoretical analysis are well confirmed, both in the general behaviour and in the expected quality factors. The resulting device, in which the sample holder acts itself as single-mode resonating element, combines an extreme ease of realization with state-of-the-art performances. The general benefits of the proposed open single-mode resonators are finally discussed.
description: 18 pages, 10 figures
Infrared observations of the flaring maser source G358.93-0.03 -- SOFIA confirms an accretion burst from a massive young stellar object
Creators: name: Stecklum, B.
name: Wolf, V.
name: Linz, H.
name: Garatti, A. Caratti o
name: Schmidl, S.
name: Klose, S.
name: Eislöffel, J.
name: Fischer, Ch.
name: Brogan, C.
name: Burns, R.
name: Bayandina, O.
name: Cyganowski, C.
name: Gurwell, M.
name: Hunter, T.
name: Hirano, N.
name: Kim, K. -T.
name: MacLeod, G.
name: Menten, K. M.
name: Olech, M.
name: Orosz, G.
name: Sobolev, A.
name: Sridharan, T. K.
name: Surcis, G.
name: Sugiyama, K.
name: van der Walt, J.
name: Volvach, A.
name: Yonekura, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Class II methanol masers are signs of massive young stellar objects (MYSOs). Recent findings show that MYSO accretion bursts cause flares of these masers. Thus, maser monitoring can be used to identify such bursts. Burst-induced SED changes provide valuable information on a very intense phase of high-mass star formation. In mid-January 2019, a maser flare of the MYSO G358.93-0.03 was reported. ALMA and SMA imaging resolved the core of the star forming region and proved the association of the masers with the brightest continuum source MM1. However, no significant flux rise of the (sub)mm dust continuum was found. Thus, we performed NIR imaging with GROND and IFU spectroscopy with FIFI-LS aboard SOFIA to detect possible counterparts to the (sub)mm sources, and compare their photometry to archival measurements. The comparison of pre-burst and burst SEDs is of crucial importance to judge whether a luminosity increase due to the burst is present and if it triggered the maser flare. The FIR fluxes of MM1 measured with FIFI-LS exceed those from Herschel significantly, which clearly confirms the presence of an accretion burst. The second epoch data, taken about 16 months later, still show increased fluxes. Our RT modeling yielded major burst parameters and suggests that the MYSO features a circumstellar disk which might be transient. From the multi-epoch SEDs, conclusions on heating and cooling time-scales could be drawn. Circumstances of the burst-induced maser relocation have been explored. The verification of the accretion burst from G358 is another confirmation that Class II methanol maser flares represent an alert for such events. The few events known to date already indicate that there is a broad range in burst strength and duration as well as environmental characteristics. The G358 event is the shortest and least luminous MYSO accretion burst so far.
description: 22 pages, 11 figures, accepted by A&A. Abstract abridged for arxiv submission
Biorthogonal polynomials for 2-matrix models with semiclassical potentials
Creators: name: Bertola, M
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider the biorthogonal polynomials associated to the two-matrix model where the eigenvalue distribution has potentials V_1,V_2 with arbitrary rational derivative and whose supports are constrained on an arbitrary union of intervals (hard-edges). We show that these polynomials satisfy certain recurrence relations with a number of terms d_i depending on the number of hard-edges and on the degree of the rational functions V_i'. Using these relations we derive Christoffel-Darboux identities satisfied by the biorthogonal polynomials: this enables us to give explicit formulae for the differential equation satisfied by d_i+1 consecutive polynomials, We also define certain integral transforms of the polynomials and use them to formulate a Riemann-Hilbert problem for (d_i+1) x (d_i+1) matrices constructed out of the polynomials and these transforms. Moreover we prove that the Christoffel-Darboux pairing can be interpreted as a pairing between two dual Riemann-Hilbert problems.
description: 47 pages, 4 figures
MAGNETOBIOSTRATIGRAPHY OF THE STURA DI LANZO FOSSIL FOREST SUCCESSION (PIEDMONT, ITALY)
Creators: name: MARTINETTO, EDOARDO
name: SCARDIA, GIANCARLO
name: VARRONE, DARIO
Publisher: name: Università degli Studi di Milano
Year: 2007

description: Along the Stura di Lanzo River, 20 km north of Turin (Italy), several large mummified stumps in growth position crop out, thus providing a well-preserved example of fossil forest. This is formed by conifers which bear the Glyptostrobus europaeus type of cone and foliage as well as the Glyptostroboxylon rudolphii wood-type. Stratigraphic and plant taphonomic analyses of the outcropping succession clearly indicate that the palaeoenvironment was a densely-vegetated swamp, laying nearby one or more active fluvial/deltaic channels, in which coarse cross-bedded sands were deposited. The fossils are embedded in fine-grained continental sediments referred to the «Villafranchiano» unit, a term used in the Piedmont region (north-western Italy) to designate coastal to continental deposits which conformably overlay Pliocene marine successions. In this paper we present new data which better characterize the chronostratigraphy of the Stura di Lanzo Fossil Forest (FF) succession and similar deposits studied at the Front Canavese (FR) site, 10 km to the NE. The integrated magnetobiostratigraphic approach, applied to both outcropping sections and subsurface deposits, permits to attribute the FF to the subchron Kaena. On the basis of these new magnetobiostratigraphic data, a strongly supported correlation between the FF and the Villafranchian "type-section" of Villafranca d'Asti is proposed. Furthermore, the well-constrained FF chronostratigraphy adds new data to the Middle Pliocene vegetation history, since an adequate palaeofloral documentation for the time interval corresponding to subchron Kaena was still lacking in Italy.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 1
title: Why there can be a human right to internet access
Creators: name: Huang, Zhengyue
Publisher: name: University of St Andrews
Year: 2019

description: In this dissertation, I argue that it is possible to claim a standalone natural human right to internet access. The central argument is in Chapter II. I start my argument by analysing the issue of trans-historical universality of human rights. Human rights are traditionally defined as rights possessed by all human beings in all places at all times. It is claimed that if a human right to X was not possible in the past due to X having been unavailable at that past time, then — on pain of contradicting the universality of human rights — there cannot be a human right to X now, and such human right claim is invalid. If the internet as a historically contingent invention was not available in the past, then there cannot be a human right to internet access. I refute this challenge in chapter II, particularly in section 2.1 and 2.3. On this basis, I develop a framework based on the concept ‘harm’ which I call Theory Alpha (in section 2.5). I argue that Theory Alpha, with its Human Rights Generation Conditionals, provides a philosophical ground to justify human rights such as a right to internet access in a naturalistic approach. Chapter III, by reflecting on the current world, provides some reasons why a human right to internet access is possible according to Theory Alpha. Chapter IV addresses potential objections and issues regarding my Theory Alpha. Particularly, section 4.2 deals with how Theory Alpha would solve the issue concerning universality of human rights. I provide a more detailed preview of the dissertation in section 1.3. I conclude that Theory Alpha provides satisfactory answers to some important questions about human rights and supports that there can be a human right to internet access.
The Ruthenocuprates - Natural Superconductor-Ferromagnet Multilayers
Creators: name: Nachtrab, T.
name: Bernhard, C.
name: Lin, C. T.
name: Koelle, D.
name: Kleiner, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The recently discovered ruthenocuprates have attracted great interest because of the microscopic coexistence of superconducting and ferromagnetic order. Typically, these materials become magnetically ordered at temperatures around 125-145 K and superconductivity sets in between 15 and 50 K. While superconductivity arises in the CuO2 layers the RuO2 layers in between order magnetically. In this paper we summarize some of the crystallographic, magnetic and superconducting properties of the ruthenocuprates, as obtained from investigations on polycrystalline samples as well as single crystals.
description: 20 pages, 19 figures; to be published in Journal Comptes Rendus de l'Academie des Sciences (Comptes Rendus Physique), Special Issue on "Magnetism and Superconductivity Coexistence"
THE MOLLUSCAN FAUNA FROM THE UPPER PLEISTOCENE VERTEBRATE-BEARING DEPOSITS OF S. TEODORO CAVE (NORTH-EASTERN SICILY)
Creators: name: ESU, DANIELA
name: MANGANO, GABRIELLA
name: BONFIGLIO, LAURA
Publisher: name: Università degli Studi di Milano
Year: 2007

description: This paper deals with terrestrial, freshwater and marine molluscs collected in the upper Pleistocene deposits of clay, sands and gravels of S. Teodoro Cave (North-eastern Sicily). Beginning from 1998 two trenches have been excavated (1998 and 2002-2004). A highly diversified assemblage of endemic and not endemic vertebrates (elephant, horse, wild ox, deer, wild boar, hyaena, fox, mouse, ground vole, shrew, hedgehog, bats, birds, reptiles), invertebrates (molluscs) and vegetal remains have been collected from the two trenches. The molluscan fauna is represented by poor to rich-species assemblages of land and freshwater gastropods and bivalves with Mediterranean-European character. Some species have been found for the first time as fossils in Sicily. The land snails prevail in the 1998 trench showing a persistent arid environment during the time of the sediment deposition. The freshwater species, characteristic of slow-running water, point to the presence of a small water body (stream or spring) inside the cave, probably more consistent in the 2002-2004 trench where this fauna prevails. The dispersal of the molluscan fauna of S. Teodoro Cave from the mainland during the low stand sea-level phases of the upper Pleistocene probably belongs to the same dispersal events following the Oxygen Isotope Stage 5e which introduced into the island not endemic faunal elements which are associated with endemic faunal elements in S. Teodoro Cave. Littoral marine reworked molluscs found in the cave deposits probably come from the sedimentary cover of a middle Pleistocene terrace which overlies the roof of the cave.

SHORT NOTE
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 1
The Keldysh action of a multi-terminal time-dependent scatterer
Creators: name: Snyman, I.
name: Nazarov, Y. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a derivation of the Keldysh action of a general multi-channel time-dependent scatterer in the context of the Landauer-Büttiker approach. The action is a convenient building block in the theory of quantum transport. This action is shown to take a compact form that only involves the scattering matrix and reservoir Green functions. We derive two special cases of the general result, one valid when reservoirs are characterized by well-defined filling factors, the other when the scatterer connects two reservoirs. We illustrate its use by considering Full Counting Statistics and the Fermi Edge Singularity.
description: 13 pages, 2 figures, submitted to PRB
Fully autocompensating high-dimensional quantum cryptography by optical phase conjugation
Creators: name: Liñares, Jesús
name: Prieto-Blanco, Xesús
name: Balado, Daniel
name: Carral, Gabriel M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a bidirectional quantum communication system based on optical phase conjugation for achieving fully autocompensating high-dimensional quantum cryptography. We prove that random phase shifts and couplings among 2N spatial and polarization optical modes described by SU(2N) transformations due to perturbations are autocompensated after a single round trip between Alice and Bob. Bob can use a source of single photons or, alternatively, coherent states and then Alice attenuates them up to a single photon level, and thus non-perturbated 1-qudit states are generated for high-dimensional QKD protocols, as the BB84 one, of a higher security.
description: 5 pages, 2 figures
A NEW DINOSAUR TRACKSITE IN THE LATE ALBIAN OF ISTRIA, CROATIA
Creators: name: MEZGA, ALEKSANDAR
name: CVETKO TEŠOVIC, BLANKA
name: BAJRAKTAREVIC, ZLATAN
name: BUCKOVIC, DAMIR
Publisher: name: Università degli Studi di Milano
Year: 2007

description: A new site with dinosaur footprints has been found in the upper Albian sediments of Istria, Croatia. The site was discovered near the city of Pula, at the Zlatne Stijene locality. The carbonate succession of the Zlatne Stijene locality is characterized by thin bedded limestones deposited in peritidal and foreshore environments. The microfossil assemblage found at the site indicates a late Albian age. One clearly distinguishable footprint and four indeterminate rounded tracks were discovered at the investigated outcrop. The footprint is tridactyl and belongs to a medium-sized bipedal theropod dinosaur of approximately 3 meter in length. Regarding dimensions and morphology it is closely related to the other late Albian theropod footprints from the Adriatic-Dinaridic carbonate platform (ADCP). The Zlatne Stijene locality fits with the Brontopodus ichnofacies concept.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 1
Influence of gluon behavior on heavy-quark pair production
Creators: name: Boroun, G. R.
name: Rezaei, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We check the impact of the gluon distribution due to the number of active flavor employed in the calculation of heavy-quark deep-inelastic scattering (DIS) electro-production on the reduced cross section and structure functions determined in the leading order (LO) and next-to-leading order (NLO) quantum chromodynamics (QCD) analysis using the Hadron Electron Ring Accelerator (HERA) combined data. The charm and beauty structure functions are determined and compared with the HERA combined data. The results are in good agreement with respect to the experimental data. We also compare the obtained charm and bottom structure functions with the results from CTEQ6.6 [Phys.Rev.D{\bf78}, 013004(2008)] and NNPDF3.1[Eur.Phys.J.C{\bf77}, 663(2017)] parameterization models. The effect of gluon density on these calculations depends on the number of active flavor at asymptotical values of the momentum transfer $Q^{2}$. Also, in the HERA kinematic range, the ratio of $F_{2}^{c\overline{c}}/F_{2}$ and $F_{2}^{b\overline{b}}/F_{2}$ are obtained. These results and comparison with the HERA combined data demonstrate that the suggested method can be applied in analysis of new colliders.
A novel block non-symmetric preconditioner for mixed-hybrid finite-element-based flow simulations
Creators: name: Nardean, Stefano
name: Ferronato, Massimiliano
name: Abushaikha, Ahmad S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F08, 65N08, 65N30

description: In this work we propose a novel block preconditioner, labelled Explicit Decoupling Factor Approximation (EDFA), to accelerate the convergence of Krylov subspace solvers used to address the sequence of non-symmetric systems of linear equations originating from flow simulations in porous media. The flow model is discretized blending the Mixed Hybrid Finite Element (MHFE) method for Darcy's equation with the Finite Volume (FV) scheme for the mass conservation. The EDFA preconditioner is characterized by two features: the exploitation of the system matrix decoupling factors to recast the Schur complement and their inexact fully-parallel computation by means of restriction operators. We introduce two adaptive techniques aimed at building the restriction operators according to the properties of the system at hand. The proposed block preconditioner has been tested through an extensive experimentation on both synthetic and real-case applications, pointing out its robustness and computational efficiency.
Healing the pain: five family stories of living with illness and loss
Creators: name: Fittinghoff, Dee
Publisher: name: University of British Columbia
Year: 2009

description: Many families have experienced the pain of living with a family member who has a neurological illness. This experience has far reaching implications for all members of the family. For some people, this experience makes them feel closer to their families, for others it is too painful and causes detachment. Informed by ecological systems theory, structural family theory and theories on loss and grief, a qualitative study based on semi-structured personal interviews was conducted. The sample consisted of four women and one man who had experienced neurological illness in their families. These interviews were recorded, transcribed and analyzed for emergent themes. The analysis of the data gives voice to five courageous family stories. The first emergent theme explores some of the challenges faced by participants at the onset and during progression of their family member's illness. Theme two focuses on the divisive reactions of family members and tensions in family relationships. Connective reactions and supportive relationships encompass the third theme of discussion. The fourth cites adaptive strategies used by participants in coping with their experiences. The fifth theme of growth and meaning reports on participants' enhanced philosophical views on life. Finally, a therapeutic model towards healing demonstrates the themes and data presented. The findings of this study support the integration of patient-centred care in the acute hospital setting and raise questions about the roles of the hospital and the community in discharge planning. The implications for social work practice include the importance of a healing component in any family therapy model, recognition of the power of relationships in healing and the ability to acknowledge and stay with clients' pain. It is recommended that future research be conducted in this field with specific reference to varied cultural perspectives on illness and loss, multigenerational studies of families dealing with illness and loss and peoples' coping abilities in the face of adversity.
A THEROPOD DOMINATED ICHNOCOENOSIS FROM LATE HAUTERIVIAN-EARLYBARREMIAN OF BORGO CELANO (GARGANO PROMONTORY, APULIA, SOUTHERN ITALY)
Creators: name: MASSIMO PETTI, FABIO
name: ALESSANDRA CONTI, MARIA
name: D'ORAZI PORCHETTI, SIMONE
name: MORSILLI, MICHELE
name: NICOSIA, UMBERTO
name: GIANOLLA, PIERO
Publisher: name: Università degli Studi di Milano
Year: 2008
Subjects: Theropod; Ankylosaur; late Hauterivian; early Barremian; Apulia

description: Several dinosaur footprints were discovered on three different levels cropping out in the CO.L.MAR quarry, south of the village of Borgo Celano in the Gargano Promontory (Apulia, southern Italy). The track-bearing levels belong to a carbonate inner platform succession referred to the Lower Cretaceous (upper Hauterivian-lower Barremian). This paper describes only the lowest dinoturbated bed, where footprints are preserved as natural cast. Forty footprints, mostly tridactyl, have been attributed to medium-sized theropods. Tridactyl tracks are similar to Kayentapus Welles, 1971 regarding ichnotaxonomy. Round shaped footprints, previously not described from this site, are found in association with tridactyl footprints and are related to ornitischian dinosaurs.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 114, No 1
Designing everyday automation with well-being in mind
Creators: name: Klapperich, Holger
name: Uhde, Alarith
name: Hassenzahl, Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Nowadays, automation not only permeates industry but also becomes a substantial part of our private, everyday lives. Driven by the idea of increased convenience and more time for the "important things in life," automation relieves us from many daily chores - robots vacuum floors and automated coffee makers produce supposedly barista-quality coffee on the press of a button. In many cases, these offers are embraced by people without further questioning. However, while we save time by delegating more and more everyday activities to automation, we also may lose chances for enjoyable and meaningful experiences. In two field studies, we demonstrate that a manual process has experiential benefits over more automated processes by using the example of coffee-making. We present a way to account for potential experiential costs of everyday automation and strategies of how to design interaction with automation to reconcile experience with the advantages of a more and more powerful automation.
description: 17 pages, 6 figures
Ein Baum in der GND
Creators: name: Annisius, Marie
name: Fischer, Barbara K.
name: Steckel, Alexander
Publisher: name: Zenodo
Year: 2022
Subjects: NFDI
Text+
Textplus
Text+ Plenary 22
Infrastructure
Operations
IO
GND

description: Poster presented at the plenary meeting of the NFDI consortium Text+ on September 12, 2022 in Mannheim, Germany.
description: Text+ receives a funding grant from the DFG under the grant agreement number 460033370. Text+ is contributing to the NFDI, the National Research Data Infrastructure (NFDI).
Study of coupled states for the (4s^{2})^{1}S + (4s4p)^{3}P asymptote of Ca_{2}
Creators: name: Allard, O.
name: Falke, St.
name: Pashov, A.
name: Dulieu, O.
name: Knöckel, H.
name: Tiemann, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The coupled states A^{1}Σ_{u}^{+} (^{1}D +}1}S), c^{3}Π_{u} (^{3}P + ^{1}S) and a^{3}Σ_{u}^{+} (^{3}P +}1}S) of the calcium dimer are investigated in a laser induced fluorescence experiment combined with high-resolution Fourier-transform spectroscopy. A global deperturbation analysis of the observed levels, considering a model, which is complete within the subspace of relevant neighboring states, is performed using the Fourier Grid Hamiltonian method. We determine the potential energy curve of the A^{1}Σ_{u}^{+} and c^{3}Π_{u} states and the strengths of the couplings between them. The c^{3}Π_{u} and \as states are of particular importance for the description of collisional processes between calcium atoms in the ground state ^{1}S_{0} and excited state ^{3}P_{1} applied in studies for establishing an optical frequency standard with Ca.
description: 15 pages, 12 figures
MORPHOLOGY, TAXONOMY AND DISTRIBUTION OF THE CRETACEOUS CORAL GENUS AULASTRAEOPORA (LATE BARREMIAN-EARLY CENOMANIAN; SCLERACTINIA)
Creators: name: LÖSER, HANNES
Publisher: name: Università degli Studi di Milano
Year: 2008
Subjects: Scleractinian corals; Aulastraeopora; Cretaceous; Systematics; Italy

description: The Cretaceous coral genus Aulastraeopora is being revised, mainly on the basis of sample material. This genus of solitary growth form is characterised by medium-sized to large specimens, compact septa in a regular hexameral or tetrameral symmetry and lonsdaleoid septa. Related genera are Preverastraea and Apoplacophyllia, which only differ by their cerioid-astreoid and phaceloid growth forms. There are four species of Aulastraeopora. The genus, which occurred world-wide, is restricted to the period from the Late Barremian to the Late Cenomanian, being most common in the Aptian to Early Albian. Forty-one samples are either known from the literature or have been to hand. This makes Aulastraeopora a rare genus.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 114, No 1
Medium-resolution spectroscopy of galaxies with redshifts 2.3 < z < 3.5
Creators: name: Mehlert, D.
name: Tapken, C.
name: Appenzeller, I.
name: Noll, S.
name: de Mello, D.
name: Heckman, T. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using FORS2 at the ESO VLT we obtained medium resolution (R ~ 2000) spectra of 12 galaxies with 2.37 < z < 3.40 in the FORS Deep Field. Two individual spectra with good S/N and a composite of all 12 spectra were used to derive properties of the stellar and interstellar absorption lines of galaxies in this redshift range. Systematic differences between the individual spectra were found for the strength and profiles of the intrinsic interstellar lines. For eight spectra with sufficient S/N we measured the `1370' and `1425' metallicity indices. From these indices we find for our sample that galaxies at z > 3 have lower mean metallicity than galaxies at 2.5 < z < 3. However there remain uncertainties concerning the absolute calibration of the metallicity tracers in use for high-redshift galaxies. Additional modeling will be needed to resolve these uncertainties.
description: 10 pages, 4 figures. Accepted by A&A
Structural and electronic properties of realistic two-dimensional amorphous topological insulators
Creators: name: Focassio, Bruno
name: Schleder, Gabriel R.
name: Costa, Marcio
name: Fazzio, Adalberto
name: Lewenkopf, Caio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the structure and electronic spectra properties of two-dimensional amorphous bismuthene structures and show that these systems are topological insulators. We employ realistic modeling of amorphous geometries together with density functional theory for electronic structure calculations. We investigate the system topological properties throughout the amorphization process and find that the robustness of the topological phase is associated with the spin-orbit coupling strength and size of the pristine topological gap. Using recursive non-equilibrium Green's function, we study the electronic transport properties of nanoribbons devices with lengths comparable to experimentally synthesized materials. We find a $2e^2/h$ conductance plateau within the topological gap and an onset of Anderson localization at the trivial insulator phase.
The screening effects influence on the nano-domain tailoring in ferroelectrics-semiconductors
Creators: name: Morozovska, Anna N.
name: Eliseev, Eugene A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We calculate the realistic sizes of nano-domains recorded by the electric field of atomic force microscope tip in BaTiO3 and LiNbO3 ferroelectric-semiconductors in contrast to the over-estimated ones obtained in the previous works. We modified the existing models of domain formation allowing for the Debye screening, recharging of sluggish surface screening layers caused by emission current between the tip apex and the domain butt surface and the redistribution of domain depolarization field induced by the charged tip apex. We have shown that the depolarization field energy of the domain butt, Debye screening effects and field emission at high voltages lead to the essential decrease of the equilibrium domain sizes. We obtained, that the domain length and radius do not decrease continuously with voltage decrease: the domain appears with non-zero length and radius at definite critical voltage. Such "threshold" domain formation is similar to the first order phase transition and correlates with recent theoretical and experimental investigations.
description: 20 pages, 4 figures, new references are added, content is changed, sent to Physica Status Solidi
MAASTRICHTIAN TO EOCENE CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY FROM THE TABIAGO SECTION, BRIANZA AREA, NORTHERN ITALY
Creators: name: TREMOLADA, FABRIZIO
name: SCIUNNACH, DARIO
name: SCARDIA, GIANCARLO
name: PREMOLI SILVA, ISABELLA
Publisher: name: Università degli Studi di Milano
Year: 2008
Subjects: Calcareous nannofossils; Biostratigraphy; Maastrichtian; Paleocene; Eocene; Northern Italy; Lombardy; Cretaceous/Tertiary boundary

description: Calcareous nannofossil biostratigraphic investigations have been carried out on samples collected from the Tabiago section, Brianza, northern Italy. This section records early Maastrichtian (CC23b nannofossil zone) to early Eocene (NP10 nannofossil zone) calcareous nannofossil assemblages. The Cretaceous-Tertiary transition is characterized by major changes in sedimentation rates and two likely stratigraphic gaps. The Cretaceous Brenno Formation was deposited with a high sedimentation rate (~20 m/m.y.), whilst the Tabiago Formation of Paleogene age records a drastic decrease (~10 m/m.y.). The absence of the CC26 zonal marker Micula prinsii may indicate a stratigraphic hiatus or an extremely condensed level in the latest Maastrichtian. However, only two samples have been collected and analyzed in this interval due to low exposure of the outcrop, and the absence of M. prinsii could be the result of diagenetic overprint or insufficient sampling. A stratigraphic hiatus or a very condensed interval corresponds to the upper part of NP1 nannofossil zone and PƒÑ foraminiferal Zone and P1a Subzone in the early Paleocene. The poor exposure of the outcrop prevents to precisely locate the zonal boundaries between NP4 and NP5 and between NP9 and NP10 and impedes the documentation of possible further stratigraphic gaps or condensed intervals.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 114, No 1
Crossing Symmetry for Long Multiplets in 4D $\mathcal{N}=1$ SCFTs
Creators: name: Buric, Ilija
name: Schomerus, Volker
name: Sobko, Evgeny
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we construct the crossing symmetry equations for mixed correlators of two long and two BPS operators in 4D $\mathcal{N}=1$ SCFTs. The analysis presented here illustrates how our general group theoretic approach to long superblocks and tensor structures of superconformal algebras can be applied to give explicit ready-to-use expressions. In the case at hand, we obtain a system of four crossing symmetry equations for the relevant OPE coefficients. One of these four equations coincides with the equation found and analysed by Li, Meltzer and Stergiou by restricting to the superprimary component of the long multiplets. The other three equations are new and they provide powerful additional constraints on the same OPE data.
Disorder driven phase transitions of the large q-state Potts model in 3d
Creators: name: Mercaldo, M. T.
name: d'Auriac, J-Ch. Anglès
name: Iglói, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Phase transitions induced by varying the strength of disorder in the large-q state Potts model in 3d are studied by analytical and numerical methods. By switching on the disorder the transition stays of first order, but different thermodynamical quantities display essential singularities. Only for strong enough disorder the transition will be soften into a second-order one, in which case the ordered phase becomes non-homogeneous at large scales, while the non-correlated sites percolate the sample. In the critical regime the critical exponents are found universal: β/ν=0.60(2) and ν=0.73(1).
description: 4 pages; 3 figures
Human Expression Recognition using Facial Shape Based Fourier Descriptors Fusion
Creators: name: Shahid, Ali Raza
name: Khan, Sheheryar
name: Yan, Hong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Dynamic facial expression recognition has many useful applications in social networks, multimedia content analysis, security systems and others. This challenging process must be done under recurrent problems of image illumination and low resolution which changes at partial occlusions. This paper aims to produce a new facial expression recognition method based on the changes in the facial muscles. The geometric features are used to specify the facial regions i.e., mouth, eyes, and nose. The generic Fourier shape descriptor in conjunction with elliptic Fourier shape descriptor is used as an attribute to represent different emotions under frequency spectrum features. Afterwards a multi-class support vector machine is applied for classification of seven human expression. The statistical analysis showed our approach obtained overall competent recognition using 5-fold cross validation with high accuracy on well-known facial expression dataset.
Strongly lensed cluster substructures are not in tension with $Λ$CDM
Creators: name: Bahé, Yannick M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Strong gravitational lensing observations can test structure formation models by constraining the masses and concentrations of subhaloes in massive galaxy clusters. Recent work has concluded that cluster subhaloes are more abundant and/or concentrated than predicted by $Λ$CDM simulations; this finding has been interpreted as arising from unidentified issues with simulations or an incorrect understanding of the nature of dark matter. We test these hypotheses by comparing observed subhalo masses and maximum circular velocities $v_\mathrm{max}$ to predictions from the high resolution Hydrangea galaxy cluster simulation suite, which is based on the successful EAGLE galaxy formation model. The simulated subhalo mass distribution and mass-$v_\mathrm{max}$ relation agrees well with observations, due to the presence of baryons during tidal stripping. Similar agreement is found for the lower-resolution Illustris-TNG300 simulation. In combination, our results suggest that the abundance and concentration of cluster substructures are not in tension with $Λ$CDM, but may provide useful constraints for the refinement of baryon physics models in simulations.
description: 6 pages, 4 figures; minor changes following first referee report (conclusions unchanged)
Supplemental Material from Laser-free super-resolution microscopy
Creators: name: Prakash, Kirti
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Biophysics
subject: 30101 Analytical Spectrometry
subject: FOS: Chemical sciences
subject: 80106 Image Processing
subject: FOS: Computer and information sciences

description: We report that high-density single-molecule super-resolution microscopy can be achieved with a conventional epifluorescence microscope set-up and a Mercury arc lamp. The configuration termed as laser-free super-resolution microscopy (LFSM), is an extension of single-molecule localization microscopy (SMLM) techniques and allows single molecules to be switched on and off (a phenomenon termed as ‘blinking’), detected and localized. The use of a short burst of deep blue excitation (350–380 nm) can be further used to reactivate the blinking, once the blinking process has slowed or stopped. A resolution of 90 nm is achieved on test specimens (mouse and amphibian meiotic chromosomes). Finally, we demonstrate that stimulated emission depletion and LFSM can be performed on the same biological sample using a simple commercial mounting medium. It is hoped that this type of correlative imaging will provide a basis for a further enhanced resolution.This article is part of the theme issue ‘SIMposium (part 1)’.
Die Bedeutung der Kirchen in den europäischen Zivilgesellschaften
Creators: name: Noll, Rüdiger
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 44 Nr. 1 (1995): Ökumenische Rundschau, Band 44, Heft 1
Un-particle Effective Action
Creators: name: Gaete, Patricio
name: Spallucci, Euro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study un-particle dynamics in the framework of standard quantum field theory. We obtain the Feynman propagator by supplementing standard quantum field theory definitions with integration over the mass spectrum. Then we use this information to construct effective actions for scalar, gauge vector and gravitational un-particles.
description: 13 pages, latex, no figures; typos corrected; presentation improved; new references added; final version accepted in PLB
Mechanism for Strong Chimeras
Creators: name: Zhang, Yuanzhao
name: Motter, Adilson E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Chimera states have attracted significant attention as symmetry-broken states exhibiting the unexpected coexistence of coherence and incoherence. Despite the valuable insights gained from analyzing specific systems, an understanding of the general physical mechanism underlying the emergence of chimeras is still lacking. Here, we show that many stable chimeras arise because coherence in part of the system is sustained by incoherence in the rest of the system. This mechanism may be regarded as a deterministic analog of noise-induced synchronization and is shown to underlie the emergence of strong chimeras. These are chimera states whose coherent domain is formed by identically synchronized oscillators. Recognizing this mechanism offers a new meaning to the interpretation that chimeras are a natural link between coherence and incoherence.
description: published version
Artificially induced positronium oscillations in a two-sheeted spacetime: consequences on the observed decay processes
Creators: name: Sarrazin, Michael
name: Petit, Fabrice
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Following recent theoretical results, it is suggested that positronium (Ps) might undergo spontaneous oscillations between two 4D spacetime sheets whenever subjected to constant irrotational magnetic vector potentials. We show that these oscillations that would come together with o-Ps/p-Ps oscillations should have important consequences on Ps decay rates. Experimental setup and conditions are also suggested for demonstrating in non accelerator experiments this new invisible decay mode.
description: 9 pages, 2 figures. Minor form correction. Accepted for publication in Int. J. of Modern Physics A
HOTA: A Higher Order Metric for Evaluating Multi-Object Tracking
Creators: name: Luiten, Jonathon
name: Osep, Aljosa
name: Dendorfer, Patrick
name: Torr, Philip
name: Geiger, Andreas
name: Leal-Taixe, Laura
name: Leibe, Bastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Multi-Object Tracking (MOT) has been notoriously difficult to evaluate. Previous metrics overemphasize the importance of either detection or association. To address this, we present a novel MOT evaluation metric, HOTA (Higher Order Tracking Accuracy), which explicitly balances the effect of performing accurate detection, association and localization into a single unified metric for comparing trackers. HOTA decomposes into a family of sub-metrics which are able to evaluate each of five basic error types separately, which enables clear analysis of tracking performance. We evaluate the effectiveness of HOTA on the MOTChallenge benchmark, and show that it is able to capture important aspects of MOT performance not previously taken into account by established metrics. Furthermore, we show HOTA scores better align with human visual evaluation of tracking performance.
description: Pre-print. Accepted for Publication in the International Journal of Computer Vision, 19 August 2020. Code is available at https://github.com/JonathonLuiten/HOTA-metrics