cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantification of Reynolds-averaged-Navier-Stokes model form uncertainty in transitional boundary layer and airfoil flows
Creators: name: Chu, Minghan
name: Wu, Xiaohua
name: Rival, David E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It is well known that Boussinesq turbulent-viscosity hypothesis can introduce uncertainty in predictions for complex flow features such as separation, reattachment, and laminar-turbulent transition. This study adopts a recent physics-based uncertainty quantification (UQ) approach to address such model form uncertainty in Reynolds-averaged Naiver- Stokes (RANS) simulations. Thus far, almost all UQ studies have focused on quantifying the model form uncertainty in turbulent flow scenarios. The focus of the study is to advance our understanding of the performance of the UQ approach on two different transitional flow scenarios: a flat plate and a SD7003 airfoil, to close this gap. For the T3A (flat-plate flow) flow, most of the model form uncertainty is concentrated in the laminar-turbulent transition region. For the SD7003 airfoil flow, the eigenvalue perturbations reveal a decrease as well as an increase in the length of the separation bubble. As a consequence, the uncertainty bounds successfully encompass the reattachment point. Likewise, the region of reverse flow that appear in the separation bubble is either suppressed or bolstered by the eigenvalue perturbations. In this context, the UQ methodology is applied to transition and show great results. This is the first successful RANS UQ study for transitional flows.
One-Step Hydrothermal Synthesis of Sb 2 WO 6 Nanoparticle towards Excellent LED Light Driven Photocatalytic Dye Degradation
Creators: name: Karmakar, Devdas
name: Mandal, Sujoy Kumar
name: Paul, Sumana
name: Pal, Saptarshi
name: Pradhan, Manik
name: Datta, Sujoy
name: Jana, Debnarayan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Pristine Antimony tungstate nanoparticles prepared via a simple hydrothermal process showcase interesting photocatalytic efficiency, degrading Methylene Blue (MB) completely in 180 min under visible light. In this study, the impact on crystalline quality and related optical properties as well as photocatalytic efficiency of antimony tungstate due to temperature variation during hydrothermal synthesis are explored. While X-ray diffraction (XRD) shows the polycrystalline nature of all synthesized samples, however a systematic increase in crystallite size is revealed by analysing the XRD peak broadening. XRD spectra are further examined by Rietveld analysis showing a change in unit cell volume. Additionally, the overall changes in the corresponding grain size and micro-strain developed in the crystals are determined using the Williamson-Hall plot. Moreover, significant variations in few Raman modes are observed with increasing synthesis temperature. A notable modification in the optical band gap as determined from the absorbance of the UV-Vis spectra is perceived with the change in synthesis temperature within the range of ~2.38-2.57 eV. Further, the photoluminescence measurement indicates that the synthesized antimony tungstate is weak luminescent material with a band-to-band emission at ~468 nm. Finally, photocatalytic efficiencies of the samples are ascertained to change with the synthesis parameter, estimated by decomposing methylene blue (MB), highest degradation rate constant (k) value is observed as 0.015 min -1 for the sample prepared at 180 o C. While the sample with the highest efficiency is also applied for degrading the Rhodamine B (RhB) and Potassium Dichromate (K 2 Cr 2 O 7 ) under visible light irradiation.
Chopped sample heating for quantitative profile analysis of low energy electron diffraction spots at high temperatures
Creators: name: Kury, P.
name: Zahl, P.
name: Horn-Von Hoegen, M.
name: Voges, C.
name: Frischat, Hannes
name: Günter, H.-L.
name: Pfnür, Herbert
name: Henzler, M.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2004
Subjects: subject: Chopper amplifiers
subject: Electric currents
subject: Electric field effects
subject: Field effect transistors
subject: Heating
subject: Low energy electron diffraction
subject: Magnetic field effects
subject: Morphology
subject: Pulsed heating mode
subject: Spherical grids
subject: Spot profile analysis (SPA)
subject: Surface sensitivity
subject: MOS capacitors
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Spot profile analysis low energy electron diffraction (SPA-LEED) is one of the most versatile and powerful methods for the determination of the structure and morphology of surfaces even at elevated temperatures. In setups where the sample is heated directly by an electric current, the resolution of the diffraction images at higher temperatures can be heavily degraded due to the inhomogeneous electric and magnetic fields around the sample. Here we present an easily applicable modification of the common data acquisition hardware of the SPA-LEED, which enables the system to work in a pulsed heating mode: Instead of heating the sample with a constant current, a square wave is used and electron counting is only performed when the current through the sample vanishes. Thus, undistorted diffration images can be acquired at high temperatures. © 2004 American Institute of Physics.
Confinement from Correlation Functions
Creators: name: Fister, Leonard
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the Polyakov loop potential in Yang--Mills theory from the fully dressed primitively divergent correlation functions only. This is done in a variety of functional approaches ranging from functional renormalisation group equations over Dyson--Schwinger equations to two-particle irreducible functionals. We present a confinement criterion that links the infrared behaviour of propagators and vertices to the Polyakov loop expectation value. The present work extends the works of [1-3] to general functional methods and sharpens the confinement criterion presented there. The computations are based on the thermal correlation functions in the Landau gauge calculated in [4-6].
description: 23 pages, 28 figures
Extension of selected configuration interaction for transcorrelated methods
Creators: name: Ammar, Abdallah
name: Scemama, Anthony
name: Giner, Emmanuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work we present an extension of the popular selected configuration interaction (SCI) algorithms to the Transcorrelated (TC) framework. Although we used in this work the recently introduced one-parameter correlation factor [E. Giner, J. Chem. Phys., 154, 084119 (2021)], the theory presented here is valid for any correlation factor. Thanks to the formalization of the non Hermitian TC eigenvalue problem as a search of stationary points for a specific functional depending both on left-and right-functions, we obtain a general framework allowing different choices for both the selection criterion in SCI and the second order perturbative correction to the energy. After numerical investigations on different second-row atomic and molecular systems in increasingly large basis sets, we found that taking into account the non Hermitian character of the TC Hamiltonian in the selection criterion is mandatory to obtain a fast convergence of the TC energy. Also, selection criteria based on either the first order coefficient or the second order energy lead to significantly different convergence rates, which is typically not the case in the usual Hermitian SCI. Regarding the convergence of the total second order perturbation energy, we find that the quality of the left-function used in the equations strongly affects the quality of the results. Within the near-optimal algorithm proposed here we find that the SCI expansion in the TC framework converges faster than the usual SCI both in terms of basis set and number of Slater determinants.
title:  Images as sites of subversion: the Passion of Christ in the orthodox ecclesiastical art of Transylvania (eighteenth-nineteenth centuries)
Creators: name: Andrei, Andreea
Publisher: name: IMT Alti Studi Lucca
Year: 2019

description: The thesis captures the intricacies of the interplay of religion,
 ethnicity, politics, and social class in the scriptural imagery depicted on
 the walls of Transylvanian wooden churches in the eighteenth and
 nineteenth centuries. It places emphasis on the episodes of the Passion,
 in which Ottoman Turks and Hungarians stand in for Christ’s
 persecutors. It engages with alterity as constructed by ideology and
 social power relations. If dominant groups enjoyed superior access to
 power, Orthodox Romanians (who differed in ethnicity, class, language,
 and religion) had to face political exclusion and economic exploitation.
 Alterity is primarily understood as the perceived otherness of the
 Romanian rural society against foreign menace and politically dominant
 groups.
 We examine the Passion scenes as sites of subversion, where
 Orthodox Romanians, which constituted the ‘marginal majority’, could
 allude to social iniquities, challenge the social, political, and religious
 might of dominant powers, as well as kindle hostility against them. In
 order to illustrate the way in which these renditions are related to
 structures of power and subversion, we investigate the connection
 between changes in iconography that contributed to their permeation of
 the religious realm and the process of identity formation of the
 Romanian nation in Transylvania. We argue that the painters framed
 the message conveyed by the paintings in such a way that it would
 resonate with and reinforce a mindset that the receivers, the Romanian
 peasantry, already possessed.
 The executioners’ allegorical representations are not the product
 of a mere correlation between Turks and Hungarians and ‘enemies of
 the faith’ or heretics, but an extension of the mentalities of the
 Transylvanian Orthodox communities of that time. The sharpening of
 ethnic and religious distinctions was intentional in shaping identity. It
 entailed a hierarchical ordering that privileged the marginal and
 discredited the influential.
Non-Hermitian Hartman effect
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The Hartman effect refers to the rather paradoxical result that the time spent by a quantum mechanical particle or a photon to tunnel through an opaque potential barrier becomes independent of barrier width for long barriers. Such an effect, which has been observed in different physical settings, raised a lively debate and some controversies, owing to the correct definition and interpretation of tunneling times and the apparent superluminal transmission. A rather open question is whether (and under which conditions) the Hartman effect persists for inelastic scattering, i.e. when the potential becomes non-Hermitian and the scattering matrix is not unitary. Here we consider tunneling through a heterojunction barrier in the tight-binding picture, where the barrier consists of a generally non-Hermitian finite-sized lattice attached to two semi-infinite nearest-neighbor Hermitian lattice leads. We derive a simple and general condition for the persistence of the Hartman effect in non-Hermitian barriers, showing that it can be found rather generally when non-Hermiticity arises from non-reciprocal couplings, i.e. when the barrier displays the non-Hermitian skin effect, without any special symmetry in the system.
description: 14 pages, 7 figures, accepted for publication in Annalen der Physik. In memory of Prof. Erasmo Recami, a great scientistic who passed away on July 2021 and who introduced me to the world of superluminal phenomena
Attributbasierte Autorisierung im Grid Computing : vertrauenswürdige Architekturen und sichere Implementierung
Creators: name: Gröper, Ralf
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Attribute based authorization
subject: distributed systems
subject: Grid Computing
subject: attributbasierte Autorisierung
subject: verteilte Systeme
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Molecular beam epitaxy of high structural quality Bi2Se3 on lattice matched InP(111) substrates
Creators: name: Schreyeck, S.
name: Tarakina, N. V.
name: Karczewski, G.
name: Schumacher, C.
name: Borzenko, T.
name: Bruene, C.
name: Buhmann, H.
name: Gould, C.
name: Brunner, K.
name: Molenkamp, L. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Epitaxial layers of the topological insulator Bi2Se3 have been grown by molecular beam epitaxy on laterally lattice-matched InP(111)B substrates. High resolution X-ray diffraction shows a significant improvement of Bi2Se3 crystal quality compared to layers deposited on other substrates. The measured full width at half maximum of the rocking curve is Delta omega=13 arcsec, and the (omega-2theta) scans exhibit clear layer thickness fringes. Atomic force microscope images show triangular twin domains with sizes increasing with layer thickness. The structural quality of the domains is confirmed on the microscopic level by transmission electron microscopy.
description: 4 pages, 4 figures
Measuring chemical abundances in AGN from infrared nebular lines: HII-CHI-Mistry-IR for AGN
Creators: name: Pérez-Díaz, Borja
name: Pérez-Montero, Enrique
name: Fernández-Ontiveros, Juan A.
name: Vílchez, José M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Future and on-going infrared and radio observatories such as JWST, METIS or ALMA will increase the amount of rest-frame IR spectroscopic data for galaxies by several orders of magnitude. While studies of the chemical composition of the ISM based on optical observations have been widely spread over decades for SFG and, more recently, for AGN, similar studies need to be performed using IR data. This regime can be especially useful in the case of AGN given that it is less affected by temperature and dust extinction, traces higher ionic species and can also provide robust estimations of the chemical abundance ratio N/O. We present a new tool based on a bayesian-like methodology to estimate chemical abundances from IR emission lines in AGN. We use a sample of 58 AGN with IR spectroscopic data retrieved from the literature to probe the validity of our method. The estimations of the chemical abundances based on IR lines in our sample are later compared with the corresponding abundances derived from the optical emission lines in the same objects. HII-CHI-Mistry-IR takes advantage of photoionization models, characterized by the chemical abundance ratios O/H and N/O and the ionization parameter $U$, to compare their predicted emission-line fluxes with a set of observed values. Instead of matching single emission lines, the code uses some specific emission-line ratios sensitive to the above free parameters. We report mainly solar and also subsolar abundances for O/H in the nuclear region for our sample of AGN, whereas N/O clusters around solar values. We find a discrepancy between the chemical abundances derived from IR and optical emission lines, being the latter higher than the former. This discrepancy, also reported by previous studies of the composition of the ISM in AGN from IR observations, is independent from the gas density or the incident radiation field to the gas.
description: 20 pages, 15 figures, 8 tables. Accepted for publication in A&A
title: Peter Pfälzner, Haus und Haushalt: Wohnformen des dritten Jahrtausends vor Christus in Nordmesopotamien
Creators: name: Krafeld-Daugherty, Maria
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Peter Pfälzner, Haus und Haushalt: Wohnformen des dritten Jahrtausends vor Christus in Nordmesopotamien. Damaszener Forschungen, Band 9. Verlag Philipp von Zabern, Mainz 2001. XXII, 419 Seiten, 122 Textabbildungen, 69 Tabellen, 100 Tafeln.
title: Thomas Stöllner, Die Hallstattzeit und der Beginn der Latènezeit im Inn-Salzach-Raum
Creators: name: Rind, Michael M.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Thomas Stöllner, Die Hallstattzeit und der Beginn der Latenezeit im Inn-Salzach-Raum. Mit einem Beitrag von K. Kritsotakis. Archäologie in Salzburg, Band 3/1: Auswertung; Band 3/II: Katalog- und Tafelteil. Hrsg, vom Amt der Salzburger Landesregierung (Landesarchäologie) gemeinsam mit dem Salzburger Museum Carolino Augusteum. Amt der Salzburger Landesregierung, Salzburg 2002 bzw. 1996. Band I: 486 Seiten, 175 Abbildungen, 5 Beilagen; Band II: 400 Seiten, 155 Tafeln, 151 Abbildungen.
Localization vs holography in $4d$ $\mathcal{N}=2$ quiver theories
Creators: name: Billo, M.
name: Frau, M.
name: Lerda, A.
name: Pini, A.
name: Vallarino, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study 4-dimensional $\mathcal{N}=2$ superconformal quiver gauge theories obtained with an orbifold projection from $\mathcal{N}=4$ SYM, and compute the 2- and 3-point correlation functions among chiral/anti-chiral single-trace scalar operators and the corresponding structure constants. Exploiting localization, we map the computation to an interacting matrix model and obtain expressions for the correlators and the structure constants that are valid for any value of the 't Hooft coupling in the planar limit of the theory. At strong coupling, these expressions simplify and allow us to extract the leading behavior in an analytic way. Finally, using the AdS/CFT correspondence, we compute the structure constants from the dual supergravity theory and obtain results that perfectly match the strong-coupling predictions from localization.
description: 51 pages, 5 figures
title: Gudrun Gomolka-Fuchs (Hrsg.), Die Sîntana de Mureş-Černjachov-Kultur. Akten des Internationalen Kolloquiums in Caputh 1995
Creators: name: Koch, Ursula
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Gudrun Gomolka-Fuchs (Hrsg.), Die Sîntana de Mureş-Černjachov-Kultur. Akten des Internationalen Kolloquiums in Caputh 1995. Kolloquien zur Vor- und Frühgeschichte, Band 2. Verlag Dr. Rudolf Habelt, Bonn 1999. 238 Seiten, 119 Textabbildungen einschließlich Karten und Tabellen.
Spinning Hexagons
Creators: name: Bercini, Carlos
name: Goncalves, Vasco
name: Homrich, Alexandre
name: Vieira, Pedro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We reduce the computation of three point function of three spinning operators with arbitrary polarizations to a statistical mechanics problem via the hexagon formalism. The central building block of these correlation functions is the hexagon partition function. We explore its analytic structure and use it to generate perturbative data for spinning three point functions. For certain polarizations and any coupling, we express the full asymptotic three point function in determinant form. With the integrability approach established we open the ground to study the large spin limit where dualities with null Wilson loops and integrable pentagons must appear.
description: 40 pages, 14 figures
title: Jorge Martínez-Pinna, La prehistoria mítica de Roma. Introducción a la etnogénesis latina
Creators: name: Linke, Bernhard
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Jorge Martínez-Pinna, La prehistoria mítica de Roma. Introducción a la etnogénesis latina, Gerión, Anejos VI. Universidad Complutense Madrid, Servicio de Publicaciones, Madrid 2002. 190 Seiten.
A systematic literature review on outlier detection in wireless sensor networks
Creators: name: Safaei, Mahmood
name: Asadi, Shahla
name: Driss, Maha
name: Boulila, Wadii
name: Alsaeedi, Abdullah
name: Chizari, Hassan
name: Abdullah, Rusli
name: Safaei, Mitra
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Outlier detection
subject: Systematic literature review
subject: Wireless sensor networks
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: A wireless sensor network (WSN) is defined as a set of spatially distributed and interconnected sensor nodes. WSNs allow one to monitor and recognize environmental phenomena such as soil moisture, air pollution, and health data. Because of the very limited resources available in sensors, the collected data from WSNs are often characterized as unreliable or uncertain. However, applications using WSNs demand precise readings, and uncertainty in data reading can cause serious damage (e.g., health monitoring data). Therefore, an efficient local/distributed data processing algorithm is needed to ensure: (1) the extraction of precise and reliable values from noisy readings; (2) the detection of anomalies from data reported by sensors; and (3) the identification of outlier sensors in a WSN. Several works have been conducted to achieve these objectives using several techniques such as machine learning algorithms, mathematical modeling, and clustering. The purpose of this paper is to conduct a systematic literature review to report the available works on outlier and anomaly detection in WSNs. The paper highlights works conducted from January 2004 to October 2018. A total of 3520 papers are reviewed in the initial search process. Later, these papers are filtered by title, abstract, and contents, and a total of 117 papers are selected. These papers are examined to answer the defined research questions. The current paper presents an improved taxonomy of outlier detection techniques. This will help researchers and practitioners to find the most relevant and recent studies related to outlier detection in WSNs. Finally, the paper identifies existing gaps that future studies can fill. © 2020 by the authors.
Confinement as a tool to probe amorphous order
Creators: name: Cammarota, C.
name: Gradenigo, G.
name: Biroli, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the effect of confinement on glassy liquids using Random First Order Transition theory as framework. We show that the characteristic length-scale above which confinement effects become negligible is related to the point-to-set length-scale introduced to measure the spatial extent of amorphous order in super-cooled liquids. By confining below this characteristic size, the system becomes a glass. Eventually, for very small sizes, the effect of the boundary is so strong that any collective glassy behavior is wiped out. We clarify similarities and differences between the physical behaviors induced by confinement and by pinning particles outside a spherical cavity (the protocol introduced to measure the point-to-set length). Finally, we discuss possible numerical and experimental tests of our predictions.
description: 5 pages, 3 figures and EPAPS (4 pages, 1 figure)
title: Dietrich Boschung, Gens Augusta. Untersuchungen zur Aufstellung, Wirkung und Bedeutung der Statuengruppen des julisch-claudischen Kaiserhauses
Creators: name: Winkes, Rolf
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Dietrich Boschung, Gens Augusta. Untersuchungen zur Aufstellung, Wirkung und Bedeutung der Statuengruppen des julisch-claudischen Kaiserhauses. Monumenta Artis Romanae XXXII. Philipp von Zabern, Mainz 2002. 233 Seiten, 32 Abbildungen, 96 Tafeln und 9 Beilagen.
An experimental study on the parameters affecting the cyclic lateral response of monopiles for offshore wind turbines in sand
Creators: name: Frick, Dennis
name: Achmus, Martin
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2020
Subjects: subject: 1g model tests
subject: Lateral cyclic loading
subject: Monopiles
subject: Offshore wind turbine foundations
subject: Particle image velocimetry
subject: Pile deflection accumulation
subject: Cyclic loads
subject: Offshore oil well production
subject: Piles
subject: Velocity measurement
subject: Displacement field
subject: Embedment length
subject: Experimental investigations
subject: Fatigue limit state
subject: Laterally loaded pile
subject: Load eccentricity
subject: Particle image velocimetries
subject: Systematic modeling
subject: Offshore wind turbines
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: The design of monopile foundations for offshore wind turbine structures is dominated by requirements resulting from serviceability and fatigue limit state. To fulfil these criteria, the load deflection-behaviour and therefore long-term accumulations of permanent deflections and rotations of the monopile foundation due to cyclic occurring wind and wave loads have to be predicted. In this paper a brief overview on current design code practice as well as other proposed methods for the prediction of accumulated deflections or rotations is given. Further, the results of a systematic model test study dealing with the response of monopiles to lateral cyclic loading in medium dense sand at different cyclic load ratios, load eccentricities and pile embedment lengths are described and evaluated. The observations of the model test study are supplemented by results of a second test series involving the visualisation of displacement fields around laterally loaded piles by means of particle image velocimetry. Based on the findings and the results of previous experimental investigations, recommendations regarding the prediction of displacement accumulations for large diameter monopiles in sand are given. © 2020
More on superintegrable models on spaces of constant curvature
Creators: name: Gonera, Cezary
name: Gonera, Joanna
name: de Lucas, Javier
name: Szczesek, Wioletta
name: Zawora, Bartosz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37J35, 70H06

description: A known general class of superintegrable systems on 2D spaces of constant curvature can be defined by potentials separating in (geodesic) polar coordinates. The radial parts of these potentials correspond either to an isotropic harmonic oscillator or a generalised Kepler potential. The angular components, on the contrary, are given implicitly by a transcendental, in general, equation. In the present note, devoted to the previously less studied models with the radial potential of the generalised Kepler type, a new two-parameter family of relevant angular potentials is constructed in terms of elementary functions. For an appropriate choice of parameters, the family reduces to an asymmetric spherical Higgs oscillator.
description: 18 pages
Are equilibrium fluctuations detectable in diffracted intensities?
Creators: name: Tringides, Michael C.
name: Larsson, Mats I.
name: Pfnür, Herbert
name: Frischat, Hannes
name: Budde, Knut
name: Henzler, Martin
Publisher: name: College Park, MD : American Institute of Physics
Year: 1997
Subjects: subject: diffraction intensity fluctuation
subject: Monte Carlo simulation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The capability of diffraction intensity fluctuations to probe dynamic phenomena at equilibrium is studied. The summation of fluctuations over different domains that scatter incoherently, the role of statistically "white-noise" generated fluctuations and the time necessary to collect a sufficiently long signal are investigated. The factors that determine the number of incoherent regions, and maximize the relative fluctuation without reducing the count rate to such low values that impractically long acquisition times are needed are discussed. Monte Carlo simulations modeling thermally generated step fluctuations are used to illustrate the results. © 1997 American Institute of Physics.
title: Henning Wrede, Senatorische Sarkophage Roms. Der Beitrag des Senatorenstandes zur römischen Kunst der hohen und späten Kaiserzeit
Creators: name: Amedick, Rita
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Henning Wrede, Senatorische Sarkophage Roms. Der Beitrag des Senatorenstandes zur römischen Kunst der hohen und späten Kaiserzeit. Monumenta Artis Romanae, Band XXIX, hrsg. vom Forschungsarchiv für Antike Plastik am Archäologischen Institut der Universität zu Köln. Verlag Philipp von Zabern, Mainz 2001. 146 Seiten, 24 Tafeln.
title: Implications of mass education on chemistry higher education
titleType: Other
Creators: name: O'Connor, Christine
Publisher: name: TU Dublin
Year: 2006

description: The following paper discusses the implications of government policy for widening access and participation in third level institutes. The increase in ‘non-traditional’ students has been widely recognised on an international scale; however, some issues of inequality still exist. The ‘struggles’ associated with widening participation and the creation of a ‘new’ student type are discussed, with particular reference to chemistry education. A change is needed with regard to the pedagogical approach taken by staff in order to cater for a diverse student body comprising a broad range of learner types, and this must be supported both at departmental and institutional levels. Also included is a review of the literature as to what best practice is in supporting the ‘new’ third level student. To conclude I look at what the future may hold for third level institutes catering for this ‘new’ student type.
Possibility of a (bi)polaron high-temperature superconductivity in Poly A/ Poly T DNA duplexes
Creators: name: Lakhno, V. D.
name: Sultanov, V. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Dynamical equations for a polaron and bipolaron in a DNA duplex are obtained on the basis of Holstein-Hubbard Hamiltonian. It is shown that in a PolyA/PolyT duplex especially stable is a bipolaron state in which holes are localized on different chains of the duplex. With the use of the polaron and bipolaron free energy, the temperature of bipolaron decay is found to be T_d \approx 350 K which can serve as an approximate estimate of the superconducting transition temperature. The way of constructing superconducting nanowires on the basis of DNA is suggested.
description: 17 pages, 12 figures
The Levy-Lieb embedding of density functional theory and its Quantum Kernel: Illustration for the Hubbard Dimer using near-term quantum algorithms
Creators: name: Pemmaraju, C. D.
name: Deshmukh, Amol
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The constrained-search formulation of Levy and Lieb provides a concrete mapping from N-representable densities to the space of N-particle wavefunctions and explicitly defines the universal functional of density functional theory. We numerically implement the Levy-Lieb procedure for a paradigmatic lattice system, the Hubbard dimer, using a modified variational quantum eigensolver approach. We demonstrate density variational minimization using the resulting hybrid quantum-classical scheme featuring real-time computation of the Levy-Lieb functional along the search trajectory. We further illustrate a fidelity based quantum kernel associated with the density to pure-state embedding implied by the Levy-Lieb procedure and employ the kernel for learning observable functionals of the density. We study the kernel's ability to generalize with high accuracy through numerical experiments on the Hubbard dimer.
description: 9 pages, 6 figures
Itinerant vs Localized Heavy-Electron Magnetism
Creators: name: Hoshino, Shintaro
name: Kuramoto, Yoshio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It is demonstrated that itinerant-localized transition of heavy electrons occurs inside the magnetically ordered phase of the Kondo-Heisenberg lattice. The phase diagram and electronic structure are derived by means of the continuous-time quantum Monte Carlo combined with the dynamical mean-field theory. Around the itinerant-localized transition, nearly flat bands appear on the Fermi surface with almost vanishing quasi-particle renormalization factor. At the same time, there emerges a strong local magnetic fluctuation with a minute energy scale. Considering both antiferromagnetic and ferromagnetic Heisenberg interactions, coherent understanding is achieved on rich phase diagrams observed in CeRh$_{1-x}$Co$_x$In$_5$, CeRu$_2$(Si$_x$Ge$_{1-x}$)$_2$, UGe$_2$ and CeT$_2$Al$_{10}$ (T=Fe,Ru,Os).
description: 5 pages, 4 figures
Stellenwert des Biolumineszenz-Imagings bakterieller Infektionen zur Evaluation der Wirksamkeit neuer Antibiotika in der Maus
Creators: name: Henken, Stefanie
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Bioluminescence imaging
subject: antibiotics
subject: Streptococcus pneumoniae
subject: Biolumineszenz-Imaging
subject: Antibiotika
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Iris germanica L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: G. germanica L. Cat. 64. Nur auf der Simplonsüdseite, wie der Cat. richtig angibt. Verbreitung hier die folgende: 3a: Gondoschlucht zwischen dem Fort und Gondo (Becherer); Alpien (schon Joller) mehrfach und zum Teil massenhaft, im Lärchen-, Fichten- und Föhrenwald, gegen Corvetsch bis etwa 1900 m hoch steigend (Becherer); Presa und Cima, mehrfach, mit Sarothamnus, Cytisus nigricans und Pteridium (idem); Gondo und Zwischbergental aufwärts,vielfach (Favre,Guide,S.47 [1875], Jaccard in Cat., Becherer und andere Beobachter). Auch in einer niederliegenden, wenigdornigen und kleinblütigen Form (Chenevard, Becherer; = var. insubrica R. Keller?).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Quantum coherence-control of thermal energy transport: The V model as a case study
Creators: name: Ivander, Felix
name: Anto-Sztrikacs, Nicholas
name: Segal, Dvira
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Here, we study a minimal model, the three-level V system coupled to two heat baths, and investigate the role of quantum coherences in heat transport in both the transient regime and in the nonequilibrium steady-state. In our model, energy is exchanged between the baths through two parallel pathways, which can be made distinct through the nondegeneracy of excited levels (energy splitting $Δ$) and a control parameter $α$, which adjusts the strength of one of the arms. Using a nonsecular quantum master equation of Redfield form, we succeed in deriving closed-form expressions for the quantum coherences and the heat current in the steady state limit for closely degenerate excited levels. By including three ingredients in our analysis: nonequilibrium baths, nondegeneracy of levels, and asymmetry of pathways, we show that quantum coherences are generated and sustained in the V model in the steady-state limit if three conditions, conjoining thermal and coherent effects are simultaneously met: (i) The two baths are held at different temperatures. (ii) Bath-induced pathways do not interfere destructively. (iii) Thermal rates do not mingle with the control parameter $α$ to destroy interferences through an effective local equilibrium condition. We find that coherences are maximized when the heat current is suppressed. On the other hand, the secular Redfield quantum master equation is shown to fail in a broad range of parameters. Although we mainly focus on analytical results in the steady state limit, numerical simulations reveal that the transient behavior of coherences contrasts the steady-state limit, suggesting that different mechanisms are at play in these two regimes. Enhancing either the lifetime of transient coherences or their magnitude at steady state thus requires the control and optimization of different physical parameters.
description: 16 pages, 10 figures
title: Contextualising Nanotechnology in Chemistry Education
titleType: Other
Creators: name: O'Connor, Christine
Publisher: name: TU Dublin
Year: 2008

description: This paper will give an example of a pedagogical approach taken in integrating nanotechnology into a chemistry degree course. In recent years nanotechnology has widely become part of the course content for undergraduate chemistry and physics degree curriculum. How contextualised the delivery of the subject matter may vary. The role of contextualisation of nanotechnology in the delivery of the content is the main focus of this paper, as to date in Ireland and many other countries nanotechnology has not been integrated into many chemistry degree courses but is slowly becoming the case. An evaluative methodology of the pedagogical approach for two introductory nanotechnology courses has been chosen for this study. Pre and post-course testing at a 4th year level and 2nd year level have been carried out and the feedback summarised. The role of visualisation and contextualisation (linking research and industrial applications to the area) will be discussed in relation to learning and teaching nanotechnology. The benefits of using nanochemistry and nanotechnology can be highlighted and this may be linked to an examination of existing applications in everyday life. It is hoped that this paper will stimulate some ideas for academics who may find themselves faced with teaching nanotechnology in the near future.
Master equations for de Sitter DFPs
Creators: name: Buchel, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop master equations to study perturbative stability of de Sitter Dynamical Fixed Points (DFPs) of strongly coupled massive quantum field theories in $d+1$ space-time dimensions with a holographic dual. The derived spectrum of linearized fluctuations characterizes the late-time dynamics of holographic strongly coupled non-conformal gauge theories in de Sitter background. Numerous checks and examples are presented.
description: 26 pages, 2 figures; v2: JHEP version
title: Guidance Booklet on Safe Handling of Nanoparticles
titleType: Other
Creators: name: McCormack, Declan
Publisher: name: TU Dublin
Year: 2008

description: Nanotechnologies are a fast evolving scientific and technological field with a high potential impact on science, economy and society. Like with all new and quickly developing technologies it is important to weigh benefits versus risks at the earliest possible convenience. Building on the results of the ImPart project, this booklet is intended to give a review of the actual knowledge in the field of nanospecific risks, deriving recommendations for the safe handling of nanoparticles for executives in industry, public organizations and NGOs. This booklet is also intended to give an outlook on possible developments in the near future and "life after ImPart".
ARCONS: A 2024 Pixel Optical through Near-IR Cryogenic Imaging Spectrophotometer
Creators: name: Mazin, B. A.
name: Meeker, S. R.
name: Strader, M. J.
name: Bumble, B.
name: O'Brien, K.
name: Szypryt, P.
name: Marsden, D.
name: van Eyken, J. C.
name: Duggan, G. E.
name: Ulbricht, G.
name: Stoughton, C.
name: Johnson, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the design, construction, and commissioning results of ARCONS, the Array Camera for Optical to Near-IR Spectrophotometry. ARCONS is the first ground-based instrument in the optical through near-IR wavelength range based on Microwave Kinetic Inductance Detectors (MKIDs). MKIDs are revolutionary cryogenic detectors, capable of detecting single photons and measuring their energy without filters or gratings, similar to an X-ray microcalorimeter. MKIDs are nearly ideal, noiseless photon detectors, as they do not suffer from read noise or dark current and have nearly perfect cosmic ray rejection. ARCONS is an Integral Field Spectrograph (IFS) containing a lens-coupled 2024 pixel MKID array yielding a 20"x20" field of view, and has been deployed on the Palomar 200" and Lick 120" telescopes for 24 nights of observing. We present initial results showing that ARCONS and its MKID arrays are now a fully operational and powerful tool for astronomical observations.
description: 12 pages, 16 figures, submitted to PASP
Establishment of a guided, in vivo, multi-channel, abdominal, tissue imaging approach
Creators: name: Bahlmann, Julia
name: Madrahimov, Nodir
name: Daniel, Fiene
name: Theidel, David
name: DeTemple, Daphne E.
name: Buettner, Manuela
name: Bleich, André
name: Haverich, Axel
name: Heisterkamp, Alexander
name: Kalies, Stefan
Publisher: name: London : Nature Publishing Group
Year: 2020
Subjects: subject: surgery
subject: fluorescence
subject: networks
subject: fiber
subject: antibodies
subject: microscopy
subject: ultrasound
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik

description: Novel tools in humane animal research should benefit the animal as well as the experimentally obtained data. Imaging technologies have proven to be versatile and also in accordance with the demands of the 3 R principle. However, most imaging technologies are either limited by the target organs, number of repetitive imaging sessions, or the maximal resolution. We present a technique-, which enables multicolor abdominal imaging on a tissue level. It is based on a small imaging fiber endoscope, which is guided by a second commercial endoscope. The imaging fiber endoscope allows the distinction of four different fluorescence channels. It has a size of less than 1 mm and can approximately resolve single cells. The imaging fiber was successfully tested on cells in vitro, excised organ tissue, and in mice in vivo. Combined with neural networks for image restauration, high quality images from various abdominal organs of interest were realized. The second endoscope ensured a precise placement of the imaging fiber in vivo. Our approach of guided tissue imaging in vivo, combined with neuronal networks for image restauration, permits the acquisition of fluorescence-microscope like images with minimal invasive surgery in vivo. Therefore, it is possible to extend our approach to repetitive imaging sessions. The cost below 30 thousand euros allows an establishment of this approach in various scenarios. © 2020, The Author(s).
title:   The Teaching-Research Relationship in Higher Education
Creators: name: McDonnell, Claire
Publisher: name: TU Dublin
Year: 2006

description: This paper examines higher education policy regarding the relationship between research and teaching. The initial issue dealt with is whether current policy in Irish higher education recognises a relationship between research and teaching, and to examine the dual role of academics as teachers and as researchers. This is followed by an examination of any measures put in place to manage and balance the teaching–research relationship. The way in which the relationship between research and teaching is dealt with both in my own institution, the Technological University Dublin, and in higher education policy in a number of other countries is then considered. Finally, the relevant literature that examines the evidence for a teaching–research relationship and that gives suggestions for good practice in developing a link between these two major aspects of academic work is reviewed.
$\mathcal{N}=1$ conformal dualities from unoriented chiral quivers
Creators: name: Amariti, Antonio
name: Bianchi, Massimo
name: Fazzi, Marco
name: Mancani, Salvo
name: Riccioni, Fabio
name: Rota, Simone
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study various orientifold projections of 4d $\mathcal{N}=1$ toric gauge theories, associated with CY singularities known as $L^{a,b,a}/\mathbb{Z}_2$, with $a+b$ even. We obtain superconformal chiral theories that have the same central charge, anomalies and superconformal index, whereas they were different before the orientifold. Some of these projections are implemented by a novel type of orientifold without fixed loci, known as glide orientifold. We claim that these theories flow to the same conformal manifold, and they are connected by quadratic exactly marginal deformations. The latter can be written in terms of conjugate pairs of bifundamental fields of $R$-charge one, generalizing previous results for unoriented non-chiral theories.
description: 42 pages, 33 figures
Wearing Masks Implies Refuting Trump?: Towards Target-specific User Stance Prediction across Events in COVID-19 and US Election 2020
Creators: name: Zhang, Hong
name: Kwak, Haewoon
name: Gao, Wei
name: An, Jisun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: People who share similar opinions towards controversial topics could form an echo chamber and may share similar political views toward other topics as well. The existence of such connections, which we call connected behavior, gives researchers a unique opportunity to predict how one would behave for a future event given their past behaviors. In this work, we propose a framework to conduct connected behavior analysis. Neural stance detection models are trained on Twitter data collected on three seemingly independent topics, i.e., wearing a mask, racial equality, and Trump, to detect people's stance, which we consider as their online behavior in each topic-related event. Our results reveal a strong connection between the stances toward the three topical events and demonstrate the power of past behaviors in predicting one's future behavior.
description: 10 pages, 2 pages, WebSci 2023, April 30-May 1, 2023, Evanston, TX, USA