cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ψηφιακή υπογραφή στο δημόσιο. Μια ολιστική προσέγγιση και μελέτη περίπτωσης
title: Digital signature in public sector. A holistic approach and a case study
titleType: AlternativeTitle
Creators: name: Λαμπαδαριδη, Αμαλία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Ψηφιακές υπογραφές
Ηλεκτρονική διακυβέρνηση
Κρυπτογραφία

description: Το θέμα της εργασίας είναι η «Ψηφιακή υπογραφή στο Δημόσιο. Μια ολιστική προσέγγιση και μελέτη περίπτωσης». Στο θεωρητικό της κομμάτι μελετάμε την ιστορία της ψηφιακής υπογραφής και πως αυτή χρησιμοποιήθηκε πριν ενταχθεί στον δημόσιο τομέα. Στο δεύτερο μέρος, μέσω της ποιοτικής έρευνας που διεξήχθη, μελετάται το πως χρησιμοποιείται πρακτικά η ψηφιακή υπογραφή στην καθημερινότητα ενός δημοσίου υπαλλήλου και πως τελικά ωφελεί τον δημόσιο τομέα. Η παρούσα έρευνα έχει ως σκοπό να αναδείξει τις προκλήσεις που αντιμετωπίζει ένα στέλεχος κι ένας υπάλληλος της δημόσιας διοίκησης στην καθημερινότητα του από την νέα εποχή της ηλεκτρονικής διακυβέρνησης στον δημόσιο τομέα και πιο συγκεκριμένα αν έχει προσχωρήσει σε αυτή την καθημερινότητα η συνήθεια της ψηφιακής υπογραφής. Διερευνάται αν ο δημόσιος υπάλληλος προσαρμόζεται, εξυπηρετείται από το μέσο αυτό, εάν εξαλείφει τη γραφειοκρατία, αν θεωρείται αξιόπιστο και εάν επιταχύνει τις διαδικασίες εξυπηρέτησης του πολίτη. Με άλλα λόγια το παρόν ερωτηματολόγιο σκοπεύει να αναδείξει τα αποτελέσματα της εφαρμογής της ηλεκτρονικής διακυβέρνησης στην εξυπηρέτηση του ίδιο του υπαλλήλου και σε δεύτερο στάδιο του πολίτη και φυσικά την αναγκαιότητα της χρήσης ψηφιακών μέσων στον σύγχρονο δημόσιο τομέα.
New Calabi-Yau Manifolds with Small Hodge Numbers
Creators: name: Candelas, Philip
name: Davies, Rhys
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is known that many Calabi-Yau manifolds form a connected web. The question of whether all Calabi-Yau manifolds form a single web depends on the degree of singularity that is permitted for the varieties that connect the distinct families of smooth manifolds. If only conifolds are allowed then, since shrinking two-spheres and three-spheres to points cannot affect the fundamental group, manifolds with different fundamental groups will form disconnected webs. We examine these webs for the tip of the distribution of Calabi-Yau manifolds where the Hodge numbers (h^{11}, h^{21}) are both small. In the tip of the distribution the quotient manifolds play an important role. We generate via conifold transitions from these quotients a number of new manifolds. These include a manifold with χ=-6 and manifolds with an attractive structure that may prove of interest for string phenomenology. We also examine the relation of some of these manifolds to the remarkable Gross-Popescu manifolds that have Euler number zero.
description: 105 pages, pdflatex with about 70 pdf and jpeg figures. References corrected. Minor revisions to Fig1, and Table 9 extended to the range h^{11} + h^21 \leq 24
The effective increase in atomic scale disorder by doping and superconductivity in Ca$_3$Rh$_4$Sn$_{13}$
Creators: name: Slebarski, A.
name: Zajdel, P.
name: Fijalkowski, M.
name: Maska, M. M.
name: Witas, P.
name: Goraus, J.
name: Fang, Y.
name: Arnold, D. C.
name: Maple, M. B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The comprehensive research of the electronic structure, thermodynamic and electrical transport properties reveals the existence of inhomogeneous superconductivity due to structural disorder in Ca$_3$Rh$_4$Sn$_{13}$ doped with La (Ca$_{3-x}$La$_x$Rh$_4$Sn$_{13}$) or Ce (Ca$_{3-x}$Ce$_x$Rh$_4$Sn$_{13}$) with superconducting critical temperatures $T_c^{\star}$ higher than those ($T_c$) observed in the parent compounds. The $T-x$ diagrams and the entropy $S(x)_T$ isotherms well document the relation between degree of an atomic disorder and separation of the {\it high-temperature} $T_c^{\star}$ and $T_c$-bulk phases. In these dirty superconductors with the mean free path much smaller than the coherence length, the Werthamer-Helfand-Hohenber theoretical model does not well fits the $H_{c2}(T)$ data. We suggest that this can result from two-band superconductivity or from the presence of strong inhomogeneity in these systems. The multiband model very well describes the $H-T$ dependencies, but the present results as well as our previous studies give arguments for the scenario based on the presence of nanoscopic inhomogeneity of the superconducting state. We also revisited the nature of structural phase transition at $T^{\star}\sim 130-170$ K and documented that there might be another precursor transition at higher temperatures. The impact of the magnetic Ce-Ce correlations on the increase of $T_c$ in respect to the critical temperatures of Ca$_{3-x}$La$_x$Rh$_4$Sn$_{13}$ is also discussed.
description: 20 pages, revtex
Improved structural ordering in sexithiophene thick films grown on single crystal oxide substrates
Creators: name: Aruta, Carmela
name: D'Angelo, Pasquale
name: Barra, Mario
name: Ausanio, Giovanni
name: Cassinese, Antonio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on sexithiophene films, about 150nm thick, grown by thermal evaporation on single crystal oxides and, as comparison, on Si/SiO2. By heating the entire deposition chamber at 100 C we obtain standing-up oriented molecules all over the bulk thickness. Surface morphology shows step-like islands, each step being only one monolayer height. The constant and uniform warming of the molecules obtained by heating the entire deposition chamber allows a stable diffusion-limited growth process. Therefore, the regular growth kinetic is preserved when increasing the thickness of the film. Electrical measurements on differently structured films evidence the impact of the inter island separation region size on the main charge transport parameters.
title: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit
Creators: name: Bauhaus-Universität Weimar. Professur Baubetrieb Und Bauverfahren
Publisher: name: Universitätsverlag
Year: 2002
Subjects: subject: Strukturwandel
subject: 620

description: Beiträge zum Tag des Baubetriebs „Über den Strukturwandel zur Konjunktur“ – Innovation – Qualität – Zahlungssicherheit – am 19. März 2002 in Weimar der Professur für Baubetrieb und Bauverfahren an der Bauhaus-Universität Weimar.
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
Tunable spin dependent transport in the dor-ring nanostructure
Creators: name: Kedzierska, Barbara
name: Gorczyca-Goraj, Anna
name: Zipper, Elzbieta
name: Maska, Maciej M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study spin-dependent transport through a quantum nanostructure composed of a quantum dot (QD) surrounded by a quantum nanoring. The nanostructure is side-attached to source and drain electrodes and we assume that the confining potential that forms the nanostructure can be controlled by electrical gating. We demonstrate that depending on the model parameters the system can exhibit positive as well as negative differential conductance (NDC). What is more interesting, these properties can be easily controlled by tuning the applied gate voltage.
description: 12 pages, 10 figures
Systematic study of the Chiral Magnetic Effect with the AVFD model at LHC energies
Creators: name: Christakoglou, Panos
name: Qiu, Shi
name: Staa, Joey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a systematic study of the correlators used experimentally to probe the Chiral Magnetic Effect (CME) using the Anomalous Viscous Fluid Dynamics (AVFD) model in Pb--Pb and Xe--Xe collisions at LHC energies. We find a parametrization that describes the dependence of these correlators on the value of the axial current density ($n_5/\mathrm{s}$), which dictates the CME signal, and on the parameter that governs the background in these measurements i.e., the percentage of local charge conservation (LCC) within an event. This allows to deduce the values of $n_5/\mathrm{s}$ and the LCC percentage that provide a quantitative description of the centrality dependence of the experimental measurements. We find that the results in Xe--Xe collisions at $\sqrt{s_{\mathrm{NN}}} = 5.44$~TeV are consistent with a background only scenario. On the other hand, the model needs a significant non-zero value of $n_5/\mathrm{s}$ to match the measurements in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$~TeV.
description: 10 pages, 10 figures
A massive class of $\mathcal{N} = 2$ AdS$_4$ IIA solutions
Creators: name: Passias, Achilleas
name: Prins, Daniël
name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We initiate a classification of $\mathcal{N} =2$ supersymmetric AdS$_4$ solutions of (massive) type IIA supergravity. The internal space is locally equipped with either an SU(2) or an identity structure. We focus on the SU(2) structure and determine the conditions it satisfies, dictated by supersymmetry. Imposing as an Ansatz that the internal space is complex, we reduce the problem of finding solutions to a Riccati ODE, which we solve analytically. We obtain in this fashion a large number of new families of solutions, both regular as well as with localized O8-planes and conical Calabi--Yau singularities. We also recover many solutions already discussed in the literature.
description: 4 figures, 36 pages. v2: typos fixed
Low energy chiral constants from epsilon-regime simulations with improved Wilson fermions
Creators: name: Hasenfratz, Anna
name: Hoffmann, Roland
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a lattice QCD calculation of the low energy constants of the leading order chiral Lagrangian. In these simulations the epsilon regime is reached by using tree-level improved nHYP Wilson fermions combined with reweighting in the quark mass. We analyze two point functions on two ensembles with lattices of size (1.85fm)^4 and (2.8fm)^4, and at several quark mass values between 4 and 20 MeV. The data are well fitted with next-to-leading order chiral perturbative formulae and predict F=90(4)MeV and Sigma^(1/3)=248(6)MeV in the MS-bar scheme at 2 GeV.
description: Extended discussion on reweighting, including a new figure, discussion on reaching the epsilon regime with chiral fermions, and some small stylistic changes. Version published in PRD. 17 pages, 9 figures
Bioactive compounds and functional potential of uapaca kirkiana (muell.ARG.) fruits
Creators: name: Chawafambira, A.
name: Sedibe, M.M.
name: A., Mpofu
name: Achilonu, M.C.
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2021
Subjects: subject: Organic Chemistry
subject: FOS: Chemical sciences

description: Consumption of Uapaca kirkiana indigenous fruit by the local populace is growing in popularity because of the acclaimed health and functional benefits. The aim of the study was to determine the bioactive compounds and functional properties of the U. kirkiana fruit. Besides the fruit’s pulp yield, the bioactive phytochemical constituent, physicochemical properties and functional characteristics of the pulp were analysed. The sugar, starch, minerals, and ascorbic acid constituents of the fruit pulp were, respectively determined using the following instruments: brix refractometer, megazyme kit, inductive coupled plasma-optical emission spectrometer and 2,6-dichlorophenolindophenol (DCPIP) titration test. The total phenolic content (TPC), tannin, and flavonoid contents were evaluated using Folin Ciocalteau test, tannin binding test and vanillin test, respectively. The average weight of the U. kirkiana fruits harvested from three regions having different climatic conditions ranged from 23.56 to 34.20 g per fruit. The mean pulp weight was from 12.15 g/100 g to 15.09 g/100 g per fruit. The biochemical and functional parameters obtained include total titratable acid (0.3 - 0.48 g/kg), antioxidant activity (34.96 - 36.68%), vitamin C (15.74 - 16.63 mg/100 g), dry matter content (28.81 - 29.38%), pH (4.3 - 4.6) and sugar content (20.29 - 21.87 g/100 g). Fructose was the dominant sugar (10.12-11.0 g/100 g). Preliminary phytochemical screening of the pulp indicated the presence of tannins, flavonoids, amino acids and carbohydrate content. Total phenolic content ranged from 67.0 to 82.5 µg GAE/g. The essential elements constituent evaluation of the pulp revealed that Fe content was 11.3 - 12.2 mg/100 g, K (383.07 - 439.8 mg/100 g), Mg (28.7 - 35.1 mg/100 g), Ca (16.4 - 17.3 mg/100 g), P (13.4 - 15.1 mg/100 g), Na (9.08 - 9.78 mg/100 g), Cu (0.8 - 0.94 mg/100 g) and Zn (0.87 - 0.94 mg/100 g). This study, besides establishing U. kirkiana fruit as a good source of micronutrients (Fe, Cu, Zn), reveals that the fruit is also an excellent source of phenolic compounds, vitamin C and sugars, hence use as a dietary supplement may combat some nutritional deficiencies. We, therefore, recommend U. kirkiana fruits to be used to produce nutritive functional foods with health benefits such as probiotic jams and as an additive.
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Hsieh, Min-Hsiu
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2021
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Theory of computation → Quantum computation theory
subject: Theory of computation → Quantum information theory
subject: Theory of computation → Quantum communication complexity
subject: Hardware → Quantum communication and cryptography
subject: Hardware → Quantum error correction and fault tolerance

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 197, 16th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2021), pages 0:i-0:xii
title: Bauen mit dem europäischen und nationalen Vergaberecht
Creators: name: Baron, Renigard
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Vergabe
subject: Recht
subject: Rechtsanwendung
subject: Europäische Integration
subject: 620

description: Mit der Vergabeverordnung und den neuen Verdingungsordnungen ist zunächst einmal das europäische Vergaberecht in nationales Vergaberecht umgesetzt. Dennoch wirft das neue Vergaberecht Fragen auf, die voraussichtlich gerichtlich entschieden werden. Es werden die Rechtsgrundlagen für das Bauen mit dem europäischen und nationalen Vergaberecht dargestellt. Wesentliche Inhalte des Gesetzes gegen Wettbewerbsbeschränkungen (GWB) und Vergabeverfahren nach GWB, Fragen des Rechtsschutzes werden behandelt.
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 15
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04, p. 15
Elemental Abundance Analysis of Single and Binary Late-B Stars Using Sub-meter Class Telescopes: HR 342, HR 769, HR 1284, and HR 8705
Creators: name: Kılıçoğlu, T.
name: Monier, R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We test the capabilities of 0.4 m telescopes equipped with an échelle spectrograph to derive fundamental parameters and elemental abundances of four late-B type stars: HR 342, HR 769, HR 1284, and HR 8705. The medium resolution (R~14000) spectra covering the wavelength range of 4380-7350 Å of the four stars have been obtained using the 40-cm-telescope in Ankara University Kreiken Observatory (AUKR). Using spectrum synthesis, we were able to derive the abundances of eleven chemical elements. We find that these stars do not show remarkable departures from the solar abundances, except for HR 8705 and the primary component of HR 1284, which exhibit slight underabundances of a few elements, i.e., O, Mg, Al, Si, and Fe. We also find that HR 1284 is probably a new spectroscopic binary star. In order to model the spectrum of this object, one of us (TK) has developed a new graphic interface which allows us to synthesize the composite spectrum of binary stars.
description: 3 pages, 2 figures and 1 table. Accepted article for Contributions of the Astronomical Observatory Skalnat\'e Pleso (CAOSP)
title: Erfahrungen bei der Neubaustrecke Köln-Rhein/Main aus Sicht der Arbeitsgemeinschaft Mittelstand
Creators: name: Hanf, Peter
name: Fricke, Ronald
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Management
subject: Arbeitsgemeinschaft
subject: Eisenbahnbau
subject: Bauführung
subject: 620

description: Die Verfasser schildern ihre Erfahrungen bei der Errichtung der Neubaustrecke Köln-Rhein/Main aus Sicht einer Arbeitsgemeinschaft, der zehn Partnerfirmen aus der gesamten Bundesrepublik sowie eine Schweizer Firmengruppe angehörten: zur Strecke, Entwurf der Trasse, Streckenverlauf und zu erstellende Bauwerke, Allgemeines zum Vergabeverfahren, Angebotsbearbeitung, Aufbau der Arge Mittelstand, Erfahrungen aus der Durchführung, Fazit
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 61
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
Speech-Gesture Mapping and Engagement Evaluation in Human Robot Interaction
Creators: name: Ghosh, Bishal
name: Dhall, Abhinav
name: Singla, Ekta
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A robot needs contextual awareness, effective speech production and complementing non-verbal gestures for successful communication in society. In this paper, we present our end-to-end system that tries to enhance the effectiveness of non-verbal gestures. For achieving this, we identified prominently used gestures in performances by TED speakers and mapped them to their corresponding speech context and modulated speech based upon the attention of the listener. The proposed method utilized Convolutional Pose Machine [4] to detect the human gesture. Dominant gestures of TED speakers were used for learning the gesture-to-speech mapping. The speeches by them were used for training the model. We also evaluated the engagement of the robot with people by conducting a social survey. The effectiveness of the performance was monitored by the robot and it self-improvised its speech pattern on the basis of the attention level of the audience, which was calculated using visual feedback from the camera. The effectiveness of interaction as well as the decisions made during improvisation was further evaluated based on the head-pose detection and interaction survey.
description: 8 pages, 9 figures, Under review in IRC 2019
title: Das Tariftreue-Gesetz und dessen Auswirkungen
Creators: name: Senft, Bernhard
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Tarifvertrag
subject: Tarifgebundenheit
subject: Deutschland <Östliche Länder>
subject: 620

description: Nach dem Tariftreuegesetz soll jedes Bauunternehmen, welches sich um einen öffentlichen Auftrag bewirbt, eine Tariftreueerklärung abgeben, in der sich dieser Betrieb verpflichtet, den Lohn des Bautarifvertrages zu bezahlen, in dessen Bundesland sich die Baustelle befindet. Die Zielsetzung des Gesetzes, nämlich die Ordnungsfunktion der Tarifverträge bei Bauleistungen zu stärken sowie arbeits- und sozialpolitisch unerwünschte Fehlentwicklungen zu bekämpfen bzw. zu vermeiden, kann nach Auffassung des Autors mit dem geplanten Gesetz nicht erreicht werden.
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 77
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
Mitigating Performance Saturation in Neural Marked Point Processes: Architectures and Loss Functions
Creators: name: Li, Tianbo
name: Luo, Tianze
name: Ke, Yiping
name: Pan, Sinno Jialin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Attributed event sequences are commonly encountered in practice. A recent research line focuses on incorporating neural networks with the statistical model -- marked point processes, which is the conventional tool for dealing with attributed event sequences. Neural marked point processes possess good interpretability of probabilistic models as well as the representational power of neural networks. However, we find that performance of neural marked point processes is not always increasing as the network architecture becomes more complicated and larger, which is what we call the performance saturation phenomenon. This is due to the fact that the generalization error of neural marked point processes is determined by both the network representational ability and the model specification at the same time. Therefore we can draw two major conclusions: first, simple network structures can perform no worse than complicated ones for some cases; second, using a proper probabilistic assumption is as equally, if not more, important as improving the complexity of the network. Based on this observation, we propose a simple graph-based network structure called GCHP, which utilizes only graph convolutional layers, thus it can be easily accelerated by the parallel mechanism. We directly consider the distribution of interarrival times instead of imposing a specific assumption on the conditional intensity function, and propose to use a likelihood ratio loss with a moment matching mechanism for optimization and model selection. Experimental results show that GCHP can significantly reduce training time and the likelihood ratio loss with interarrival time probability assumptions can greatly improve the model performance.
description: 9 pages, 4 figures, accepted by KDD-21 research track. The source code is available at https://github.com/ltz0120/Graph-Convolutional- Hawkes-Processes-GCHP
Cold nuclear matter effects on J/psi production: intrinsic and extrinsic transverse momentum effects
Creators: name: Ferreiro, E. G.
name: Fleuret, F.
name: Lansberg, J. P.
name: Rakotozafindrabe, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Cold nuclear matter effects on J/psi production in proton-nucleus and nucleus-nucleus collisions are evaluated taking into account the specific J/psi production kinematics at the partonic level, the shadowing of the initial parton distributions and the absorption in the nuclear matter. We consider two different parton processes for the c-cbar pair production: one with collinear gluons and a recoiling gluon in the final state and the other with initial gluons carrying intrinsic transverse momentum. Our results are compared to RHIC observables. The smaller values of the nuclear modification factor R_AA in the forward rapidity region (with respect to the mid rapidity region) are partially explained, therefore potentially reducing the need for recombination effects.
description: 7 pages, 11 figures, LaTeX, uses elsarticle.cls (included).v2: version (with minor text revisions and Fig 2 and 4a modified) to appear in Phys.Lett. B
Supersymmetric Wilson Loops, Instantons, and Deformed ${\cal W}$-Algebras
Creators: name: Haouzi, Nathan
name: Kozçaz, Can
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Let $\mathfrak{g}$ be a simple Lie algebra. We study 1/2-BPS Wilson loops of supersymmetric 5d $\mathfrak{g}$-type quiver gauge theories on a circle, in a non-trivial instanton background. The Wilson loops are codimension 4 defects of the gauge theory, and their interaction with self-dual instantons is captured by a modified 1d ADHM quantum mechanics. We compute the partition function as its Witten index. This index is a "$qq$-character" of a finite-dimensional irreducible representation of the quantum affine algebra $U_q(\hat{\mathfrak{g}})$. Using gauge/vortex duality, we can understand the 5d physics in 3d gauge theory terms. Namely, we reinterpret the 5d theory with vortex flux from the point of view of the vortices themselves. This vortex perspective has an advantage: it has yet another dual description in terms of deformed $\mathfrak{g}$-type Toda Theory on a cylinder, in free field formalism. We show that the gauge theory partition function is equal to a chiral correlator of the deformed Toda Theory, with stress tensor and higher spin operator insertions. We derive all the above results from type IIB string theory, compactified on a resolved $ADE$ singularity times a cylinder with punctures, with various branes wrapping the blown-up 2-cycles.
description: 127 pages, 16 figures; v2: fixed typos, added references
The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)
Creators: name: Mayor, M.
name: Udry, S.
name: Lovis, C.
name: Pepe, F.
name: Queloz, D.
name: Benz, W.
name: Bertaux, J. -L.
name: Bouchy, F.
name: Mordasini, C.
name: Segransan, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper reports on the detection of a planetary system with three Super-Earths orbiting HD40307. HD40307 is a K2V metal-deficient star at a distance of only 13 parsec, part of the HARPS GTO high-precision planet-search programme. The three planets on circular orbits have very low minimum masses of respectively 4.2, 6.9 and 9.2 Earth masses and periods of 4.3, 9.6 and 20.5 days. The planet with the shortest period is the lightest planet detected to-date orbiting a main sequence star. The detection of the correspondingly low amplitudes of the induced radial-velocity variations is completely secured by the 135 very high-quality HARPS observations illustrated by the radial-velocity residuals around the 3-Keplerian solution of only 0.85 m/s. Activity and bisector indicators exclude any significant perturbations of stellar intrinsic origin, which supports the planetary interpretation. Contrary to most planet-host stars, HD40307 has a marked sub-solar metallicity ([Fe/H]=-0.31), further supporting the already raised possibility that the occurrence of very light planets might show a different dependence on host star's metallicity compared to the population of gas giant planets. In addition to the 3 planets close to the central star, a small drift of the radial-velocity residuals reveals the presence of another companion in the system the nature of which is still unknown.
description: Submitted to A&A (6 pages)
›Kommunikation unter Verwundeten‹. Zu George Batailles Konzept und Kultur der Überschreitung
Creators: name: Wennerscheid, Sophie
Publisher: name: Österreichische Zeitschrift für Geschichtswissenschaften
Year: 2007

description: Österreichische Zeitschrift für Geschichtswissenschaften, Bd. 18 Nr. 3 (2007): Liebe: Diskurse und Praktiken
The Food and Nutrition Assistance Landscape: Fiscal Year 2021 Annual Report
Creators: name: Jones, Jordan W
name: Toossi, Saied
name: Hodges, Leslie
name: Jones, Jordan W
name: Toossi, Saied
name: Hodges, Leslie
Publisher: name: Unknown
Year: 2022
Subjects: subject: Food Security and Poverty
subject: Food Consumption/Nutrition/Food Safety
subject: Food and nutrition assistance programs
subject: Supplemental Nutrition Assistance Program (SNAP)
subject: Special Supplemental Nutrition Program for Women
subject: Infants, and Children (WIC)

description: The U.S. Department of Agriculture (USDA) administers 15 domestic food and nutrition assistance programs that together affect the lives of millions of people and account for roughly two-thirds of USDA’s annual budget. In response to the Coronavirus (COVID-19) pandemic, USDA launched additional temporary programs and implemented numerous policy changes that expanded the scope and coverage of existing programs. Together, these initiatives contributed to higher spending on food and nutrition assistance programs in fiscal year (FY) 2021 (October 1, 2020, to September 30, 2021), which amounted to a historical high of $182.5 billion. This report uses preliminary data from USDA, Food and Nutrition Service (FNS) and USDA, Agricultural Marketing Service (AMS) to examine program trends and policy changes in USDA’s largest U.S. food and nutrition assistance programs through FY 2021.
Intermediate statistics: addressing the thermoelectric properties of solids
Creators: name: Marinho, Andre A.
name: Brito, Francisco A.
name: Viswanathan, G. M.
name: Bezerra, C. G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the thermodynamics of a crystalline solid by applying intermediate statistics obtained by deforming known solid state models using the mathematics of $q$-analogs. We apply the resulting $q$-deformation to both the Einstein and Debye models and study the deformed thermal and electrical conductivities and the deformed Debye specific heat. We find that the $q$-deformation acts in two different ways -- but not necessarily as independent mechanisms. First, it acts as an effective factor of disorder or impurity, modifying the characteristics of a crystalline structure, which are phenomena described by q-bosons. Second, it also manifests intermediate statistics, namely, the B-anyons (or B-type systems). For the latter case, we have identified the Schottky effect, normally associated with high-$T_c$ superconductors in the presence of rare-earth-ion impurities. We also find that it increases the specific heat of the solids beyond the Dulong-Petit limit at high temperature. Such an effect is usually related to anharmonicity of interatomic interactions. Alternatively, since in the $q$-bosons case the statistics are in principle maintained, the effect of the deformation acts more slowly due to a small change in the crystal lattice. On the other hand, B-anyons that belong to modified statistics are more sensitive to the deformation. The results reported here may be verified experimentally, for instance, in experimental samples by inserting impurities, or changes in pressure or temperature if one assumes these tuning quantities are related with the q-deformation parameter.
description: 17 pages, 8 figures. Version published in PRE
title: Zahlungssicherheit beim Bauen – mit Sicherheit Sicherheiten?!
Creators: name: Havers, Martin
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Sicherheiten
subject: Zahlung
subject: Deutschland / Vergabe- und Vertragsordnung für Bauleistungen
subject: 620

description: Der Verfasser behandelt das Problem der Sicherheiten, die dazu dienen, das wirtschaftliche Risiko für den Fall zu vermindern, dass der Vertragspartner Vertragspflichten nicht nachkommen will oder kann: Sicherheiten des § 17 VOB/B, Sicherheiten nach § 648 BGB / § 648 a BGB
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 71
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
Quantum Error Correction
Creators: name: Brun, Todd A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction is a set of methods to protect quantum information--that is, quantum states--from unwanted environmental interactions (decoherence) and other forms of noise. The information is stored in a quantum error-correcting code, which is a subspace in a larger Hilbert space. This code is designed so that the most common errors move the state into an error space orthogonal to the original code space while preserving the information in the state. It is possible to determine whether an error has occurred by a suitable measurement and to apply a unitary correction that returns the state to the code space, without measuring (and hence disturbing) the protected state itself. In general, codewords of a quantum code are entangled states. No code that stores information can protect against all possible errors; instead, codes are designed to correct a specific error set, which should be chosen to match the most likely types of noise. An error set is represented by a set of operators that can multiply the codeword state. Quantum error correction is used to protect information in quantum communication (where quantum states pass through noisy channels) and quantum computation (where quantum states are transformed through a sequence of imperfect computational steps in the presence of environmental decoherence to solve a computational problem). In quantum computation, error correction is just one component of fault-tolerant design.
description: Article submitted to the "Oxford Research Encyclopedia of Physics"; it gives a brief history and pedagogical introduction to the subject, with references to the larger field. 35 pages, 3 figures. This article should be readable without any detailed knowledge of either quantum computation or error correction
Coupling charge and topological reconstructions at polar oxide interfaces
Creators: name: van Thiel, T. C.
name: Brzezicki, W.
name: Autieri, C.
name: Hortensius, J. R.
name: Afanasiev, D.
name: Gauquelin, N.
name: Jannis, D.
name: Janssen, N.
name: Groenendijk, D. J.
name: Fatermans, J.
name: van Aert, S.
name: Verbeeck, J.
name: Cuoco, M.
name: Caviglia, A. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In oxide heterostructures, different materials are integrated into a single artificial crystal, resulting in a breaking of inversion-symmetry across the heterointerfaces. A notable example is the interface between polar and non-polar materials, where valence discontinuities lead to otherwise inaccessible charge and spin states. This approach paved the way to the discovery of numerous unconventional properties absent in the bulk constituents. However, control of the geometric structure of the electronic wavefunctions in correlated oxides remains an open challenge. Here, we create heterostructures consisting of ultrathin SrRuO$_3$, an itinerant ferromagnet hosting momentum-space sources of Berry curvature, and LaAlO$_3$, a polar wide-bandgap insulator. Transmission electron microscopy reveals an atomically sharp LaO/RuO$_2$/SrO interface configuration, leading to excess charge being pinned near the LaAlO$_3$/SrRuO$_3$ interface. We demonstrate through magneto-optical characterization, theoretical calculations and transport measurements that the real-space charge reconstruction modifies the momentum-space Berry curvature in SrRuO$_3$, driving a reorganization of the topological charges in the band structure. Our results illustrate how the topological and magnetic features of oxides can be manipulated by engineering charge discontinuities at oxide interfaces.
description: 5 pages main text (4 figures), 29 pages of supplementary information
title: Selbstverdichtender Beton in der Praxis
Creators: name: Breitenbücher, Rolf
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Betonbau
subject: Selbstverdichtender Beton
subject: 620

description: Selbstverdichtender Beton hat das Potenzial, in großer Breite in den Betonbau einzufließen. Seine besonderen Eigenschaften können vor allem einen zielsichereren und robusteren Einbau des Betons in das Bauwerk ermöglichen und damit die Qualität erheblich verbessern. Voraussetzung für eine erfolgreiche Umsetzung ist aber auch eine entsprechende Erfahrung und Sorgfalt beim Umgang mit diesem neuen Baustoff, sei es bei der Herstellung im Transportbetonwerk oder bei der Verarbeitung auf der Baustelle. Der Verfasser gibt einen Überblick über diese neue Technologie und schildert Versuchsergebnisse zum Einbau selbstverdichtenden Betons.
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 45
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
title: Das System der „Helfenden Prüfung“
Creators: name: Weyhe, Stefan
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Bauschaden
subject: Qualität
subject: Prozessfähigkeit
subject: 620

description: Der Verfasser stellt die transparente Qualitätssicherung als integralen Bestandteil des gesamten Bauplanungs- und Bauausführungsprozesses dar, mit welcher dem großen Umfang der Baumängel begegnet werden soll.
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 53
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Bansal, Nikhil
name: Merelli, Emanuela
name: Worrell, James
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2021
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Theory of computation

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 198, 48th International Colloquium on Automata, Languages, and Programming (ICALP 2021), pages 0:i-0:xxxviii
title: Dezentrale Bauzustandserfassung am Beispiel von Rissüberwachungen
Creators: name: Hahn, Oliver
Publisher: name: Bauhaus-Universität Weimar
Year: 2002
Subjects: subject: Baubetriebslehre
subject: Bauschaden
subject: Rissverhalten
subject: Überwachungstechnik
subject: 620

description: Bauzustände lassen sich dank einer sich beständig weiterentwickelnden Technik sehr genau und zuverlässig erfassen. Durch den Einsatz elektronischer Sensoren und automatischer Datenerfassungssysteme sowie unter Nutzung der Datenfernübertragung über Telefon oder Internet lässt sich eine Vielzahl von Objekten überwachen. Der Verfasser gibt ein Anwendungsbeispiel anhand der Rissüberwachung an Gebäuden.
description: Tag des Baubetriebs 2002 - Tagungsbeiträge: „Über den Strukturwandel zur Konjunktur“ - Innovation – Qualität – Zahlungssicherheit, p. 41
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 04
Proof of the Toponogov Conjecture on Complete Surfaces
Creators: name: Guilfoyle, Brendan
name: Klingenberg, Wilhelm
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A05

description: We prove a conjecture of Toponogov on complete convex planes, namely that such planes must contain an umbilic point, albeit at infinity. Our proof is indirect. It uses Fredholm regularity of an associated Riemann-Hilbert boundary value problem and an existence result for holomorphic discs with Lagrangian boundary conditions, both of which apply to a putative counterexample.
 Corollaries of the main theorem include a Hawking-Penrose singularity-type theorem, as well as the proof of a conjecture of Milnor's from 1965 in the convex case.
description: AMS Latex, 44 pages, 3 figures. The paper includes previously unpublished material by the authors that originally appeared in arXiv:0808.0851
Verification and validation of gyrokinetic and kinetic-MHD simulations for internal kink instability in DIII-D tokamak
Creators: name: Brochard, G.
name: Bao, J.
name: Liu, C.
name: Gorelenkov, N.
name: Choi, G.
name: Dong, G.
name: Liu, P.
name: Clenaghan, J. Mc.
name: Nicolau, J. H.
name: Wang, F.
name: Wang, W. H.
name: Wei, X.
name: Zhang, W. L.
name: Heidbrink, W.
name: Graves, J. P.
name: Lin, Z.
name: Lütjens, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Verification and validation of the internal kink instability in tokamak have been performed for both gyrokinetic (GTC) and kinetic-MHD codes (GAM-solver, M3D-C1-K, NOVA, XTOR-K). Using realistic magnetic geometry and plasma profiles from the same equilibrium reconstruction of the DIII-D shot #141216, these codes exhibit excellent agreement for the growth rate and mode structure of the internal kink mode when all kinetic effects are suppresed. The simulated radial mode structures agree quantitatively with the electron cyclotron emission measurement after adjusting, within the experimental uncertainty, the safety factor q=1 flux-surface location in the equilibrium reconstruction. Compressible magnetic perturbations strongly destabilize the kink, while poloidal variations of the equilibrium current density reduce the growth rate of the kink. Furthermore, kinetic effects of thermal ions are found to decrease the kink growth rate in kinetic-MHD simulations, but increase the kink growth rate in gyrokinetic simulations, due to the additional drive of the ion temperature gradient and parallel electric field. Kinetic thermal electrons are found to have negligible effects on the internal kink instability.
description: 16 pages, 10 figures
Prospects of a Pb$^{2+}$ ion clock
Creators: name: Beloy, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a high-performance atomic clock based on the 1.81 PHz transition between the ground and first-excited state of doubly ionized lead. Utilizing an even isotope of lead, both clock states have $I=J=F=0$, where $I$, $J$, and $F$ are the conventional quantum numbers specifying nuclear, electronic, and total angular momentum, respectively. The clock states are nondegenerate and completely immune to nonscalar perturbations, including first order Zeeman and electric quadrupole shifts. Additionally, the proposed clock is relatively insusceptible to other frequency shifts (blackbody radiation, second order Zeeman, Doppler), accommodates "magic" rf trapping, and is robust against decoherence mechanisms that can otherwise limit clock stability. By driving the transition as a two-photon $E1$+$M1$ process, the accompanying probe Stark shift is appreciable yet manageable for practical Rabi frequencies.
Thermodynamics, Phase Transition and Joule Thomson Expansion of 4-D Gauss-Bonnet AdS Black Hole
Creators: name: Hegde, Kartheek
name: Kumara, A. Naveena
name: Rizwan, C. L. Ahmed
name: M., Ajith K.
name: Ali, Md Sabir
name: Punacha, Shreyas
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore the thermodynamic and phase transition properties of asymptotically AdS black holes within Einstein-Gauss-Bonnet gravity, focusing on Joule Thomson expansion. Thermodynamics is studied in the extended phase space, where the cosmological constant serves as thermodynamic pressure. We observe that the black hole undergoes a phase transition similar to that of a van der Waals system. We analyze charged and neutral cases separately to distinguish the effect of charge and Gauss Bonnet parameter on critical behavior and examine the phase structure. We find that the Gauss-Bonnet coupling parameter behaves similarly to black hole charge or spin, guiding the phase structure. To understand the underlying phase structure determined by the Gauss-Bonnet coefficient $α$, we introduce a new order parameter. We discover that the change in the conjugate variable to the Gauss-Bonnet parameter acts as an order parameter, demonstrating a critical exponent of $1/2$ in the vicinity of the critical point. Since the phase structure is analogous to that of a van der Waals fluid, we investigate the Joule-Thomson expansion of the black hole. We analytically study the Joule-Thomson expansion, focusing on three key characteristics: the Joule-Thomson coefficient, inversion curves, and isenthalpic curves. We obtain isenthalpic curves in the $T-P$ plane and illustrate the cooling-heating regions.
description: 23 pages, 6 figures
A comparative study of various Deep Learning techniques for spatio-temporal Super-Resolution reconstruction of Forced Isotropic Turbulent flows
Creators: name: Venkatesh, T. S. Sachin
name: Srivastava, Rajat
name: Bhatt, Pratyush
name: Tyagi, Prince
name: Singh, Raj Kumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Super-resolution is an innovative technique that upscales the resolution of an image or a video and thus enables us to reconstruct high-fidelity images from low-resolution data. This study performs super-resolution analysis on turbulent flow fields spatially and temporally using various state-of-the-art machine learning techniques like ESPCN, ESRGAN and TecoGAN to reconstruct high-resolution flow fields from low-resolution flow field data, especially keeping in mind the need for low resource consumption and rapid results production/verification. The dataset used for this study is extracted from the 'isotropic 1024 coarse' dataset which is a part of Johns Hopkins Turbulence Databases (JHTDB). We have utilized pre-trained models and fine tuned them to our needs, so as to minimize the computational resources and the time required for the implementation of the super-resolution models. The advantages presented by this method far exceed the expectations and the outcomes of regular single structure models. The results obtained through these models are then compared using MSE, PSNR, SAM, VIF and SCC metrics in order to evaluate the upscaled results, find the balance between computational power and output quality, and then identify the most accurate and efficient model for spatial and temporal super-resolution of turbulent flow fields.
description: 10 pages, 10 figures, 2 tables, accepted for IMECE2021
title: Kleinkindbetreuung in Niederösterreich
title: Bedarf und Bedürfnisse von Eltern
titleType: Subtitle
Creators: name: Rille-Pfeiffer, Christiane
name: Kaindl, Markus
name: Kapella, Olaf
Publisher: name: University of Vienna. Project: Family Studies in Austria
Year: 2020
Subjects: Kinderbetreuung; Niederösterreich; Eltern; Betreuungsbedarf

description: Die Betreuungssituation von unter 3-jährigen Kindern in Niederösterreich steht im Fokus dieser Publikation. Es wurde untersucht, welche Lösungen Eltern für die Betreuung ihrer Kleinkinder finden und welche Bedürfnisse und Präferenzen sie diesbezüglich haben. Dabei geht es sowohl um die Nutzung privater als auch formeller Betreuungsangebote. Als zentrale Einflussgröße für die gewählte Betreuung wird das Erwerbsverhalten der Eltern mitdiskutiert. Die Studie wurde 2019 in Kooperation mit der AK NÖ durchgeführt.