cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Variation-aware behavioural modelling using support vector machines and affine arithmetic
Creators: name: Krause, Anna
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Support Vector Machines
subject: Machine Learning
subject: Parameter Variations
subject: Behavioural Modelling
subject: Affine Arithmetic
subject: Uncertainty Modelling
subject: Maschinelles Lernen
subject: Verhaltensmodellierung
subject: Parametervariationen
subject: Affine Arithmetik
subject: Modellierung von Unsicherheiten
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: AGIAS Generalised Interval Arithmetic Simulator (AGIAS) is a specialised simulator which uses affine arithmetic to model parameter variations. It uses a specialised root-finding algorithm to simulate analogue circuits with parameter variations in one single simulation run. This is a significant speed-up compared to the multiple runs needed by industrialised solutions such as Monte-Carlo (MC) or Worst-Case Analysis (WCA). Currently, AGIAS can simulate analogue circuits only under very specific conditions. In many cases, circuits can only be simulated for certain operating points. If the circuits is to be evaluated in other operating points, the solver becomes numerically unstable and simulation fails. In these cases, interval widths approach infinity. Behavioural modelling of analogue circuits was introduced by researchers working around limitations of simulators. Most early approaches require expert knowledge and insight into the circuit which is modelled. In recent years, Machine Learning techniques for automatic generation of behavioural models have made their way into the field. This thesis combines Machine Learning techniques with affine arithmetic to include the effects of parameter variations into models. Support Vector Machines (SVMs) train two sets of parameters: one slope parameter and one offset parameter. These parameters are replaced by affine forms. Using these two parameters allows affine SVMs to model effects of parameter variations with varying widths. Training requires additional information about maximum and minimum values in addition to the nominal values in the data set. Based on these changes, affine ε Support Vector Machine (ε̂SVR) and ν Support Vector Machine (ν̂SVR) algorithms for regression are presented. To train the affine parameters directly and profit from the Sequential Minimal Optimisation algorithm (SMO)’s selectivity, the SMO is extended to handle the new, larger optimisation problems. The new affine SVMs are tested on analogue circuits that have been chosen based on whether they could be simulated with AGIAS and how strongly non-linear their characteristic function is.
Dense electron-positron plasmas and bursts of gamma-rays from laser-generated QED plasmas
Creators: name: Ridgers, C. P.
name: Brady, C. S.
name: Duclous, R.
name: Kirk, J. G.
name: Bennett, K.
name: Arber, T. D.
name: Bell, A. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In simulations of a 12.5PW laser (focused intensity I = 4x10^23W/cm^2) striking a solid aluminium target 10% of the laser energy is converted to gamma-rays. A dense electron-positron plasma is generated with a maximum density of 10^26/m^3; seven orders of magnitude denser than pure e-e+ plasmas generated with 1PW lasers. When the laser power is increased to 320PW (I = 10^25W/cm^2) 40% of the laser energy is converted to gamma-ray photons and 10% to electron-positron pairs. In both cases there is strong feedback between the QED emission processes and the plasma physics; the defining feature of the new `QED-plasma' regime reached in these interactions.
description: Copyright (2013) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Phys. Plas., 20, 056701) and may be found at (pop.aip.org/resource/1/phpaen/v20/i5/p056701)
Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 9, Nr. 1 (1925)
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2015

description: Titel
Inhalt
Ein großer Fund römischer Bildwerke in Cannstatt...1-14
Klassikerstellen zur Archäologie...15-20
Neue Skulpturen in der Römischen Abteilung des Wallraf-Richartz-Museums zu Köln...20-26
Das Mithrasheiligtum in Schwarzerden...27-32
Ein Architekturmotiv...35-39
Eine römische Giebelverzierung aus Heddernheim...33-35
Eine römische Bronzekelle. gefunden im freien Germanien...39-40
Rekonstruktion eines Hallstatthauses bei Neuhäusel im Westerwald...40-43
Hölzerne Schrifttafeln aus Vindonissa...43-45
Brettchenweberei in römischer Zeit...45-47
Vom Felsberg im Odenwald...47-50
Ein neuer Goldfund aus Bulgarien...50-54
Die Bodengestaltung der Stadt Trier und die römische Stadt...54-58
Ein spätrömisches Kastell bei Saarbrücken...58-62
Aus Museen und Vereinen...62-63
Literatur...63-64
title: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 16, Nr. 1 (1932)
title: Germania
titleType: AlternativeTitle
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2016

description: Inhalt
Paläolithische Station mit Tierplastiken und menschlichen Skelettresten bei Stetten ob Lontal...1-8
Römische Architektur in Bonn...8-18
Die römischen Heilthermen von Badenweiler. Vorbericht über neue Untersuchungen...18-21
Ein römisches Familiengrabmal von Nickenich bei Andernach...22-28
Zur Frage der Juppitergigantensäulen...28-36
Titel
Grabungen in Haltern 1929 - 1931...36-45
Römisches Skelettgrab mit Spruchbecher aus Weinsheim, Kreis Worms...45-52
Römischer Gesichtshelm vom Aschberg im Museum Dillingen a. d. Donau...52-58
Ein reiches alamannisches Frauengrab aus Täbingen (OA. Rottweil)...58-61
Kleine Mitteilungen...62-64
Otto Kunkel, Pommersche Urgeschichte in Bildern...64-65
Neuerscheinungen...70-80
Ernst Gall, Karolingische und ottonische Kirchen...65-67
Gerda Bernhard, Das nördliche Rheinhessen...67-69
Richard Pittioni, Bibliographie zur Urgeschichte Österreichs (einschließlich Deutschsüdtirol)...69
Symmetry breaking via Kondo hybridization: Chiral nematic metal in Pr2Ir2O7
Creators: name: Rau, Jeffrey G.
name: Kee, Hae-Young
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In frustrated magnets when magnetic ordering is suppressed down to low temperature, the formation of a quantum spin liquid becomes a possibility. How such a spin liquid manifests in the presence of conduction electrons is a question with potentially rich physical consequences, particularly when both the localized spins and conduction electrons reside on frustrated lattices. We propose a novel mechanism for symmetry breaking in systems where conduction electrons hybridize with a quantum spin liquid through Kondo couplings. We apply this to the pyrochlore iridate Pr2Ir2O7, which exhibits an anomalous Hall effect without clear indications of magnetic order. We show that Kondo hybridization between the localized Pr pseudo-spins and Ir conduction electrons breaks some of the spatial symmetries, in addition to time-reversal regardless of the form ofthe coupling. These broken symmetries result in an anomalous Hall conductivity and induce small magnetic, quadrupolar and charge orderings. Further experimental signatures are proposed.
description: 6 pages, 4 figures
Ways to stop mirrors from moving unnecessarily : design of advanced gravitational wave detectors
Creators: name: Adya, Vaishali Badrish
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: gravitational wave detectors
subject: interferometer simulations
subject: control noise
subject: Gravitationswellendetektoren
subject: Interferometersimulationen
subject: Regelungsrauschen
subject: Gravitationswellen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Now that we have entered an era of gravitational wave astronomy, gravitational wave detectors are expected to detect several events a month (or more) in the near future. The current ground based detectors are undergoing upgrades, and future gravitational wave detectors, using exotic techniques and aiming at better sensitivity with lower noise contributions, are under consideration. To maintain strain sensitivity, precise control of various interferometric degrees of freedom in the detectors is required. The core work of this thesis involves the analysis of a sensing and control scheme for a third generation gravitational wave observatory, the Einstein Telescope (ET). A novel technique that will allow us to sense all the longitudinal degrees of freedom of the interferometer independently has been proposed in this thesis. Assuming conservative servo designs, a shot noise limited displacement noise budget for the low frequency part of ET (ET-LF) has been simulated using the simulation tools Finesse and SimulinkNb. It is thus shown that the control scheme does not inject additional sensing noise from auxiliary degrees of freedom into the measured gravitational wave strain channel. The simulated demonstration of the controllability of ET-LF with the new GHz control scheme is an important finding as current detectors are limited by control noise in the low frequency (< 10 Hz) regime. The new technology should be tested thoroughly to ensure that it can be incorporated into detectors. The new sensing scheme proposed for ET-LF can be tested and tweaked for low noise operation at the AEI 10m prototype before transferring the technology to full-scale detectors. In this thesis, a control scheme was developed to independently sense and control the three longitudinal degrees of freedom of the AEI 10m prototype using a GHz sub-carrier. The sum of the control noise from all the loops was shown to be below the quantum noise limit predicted for the AEI 10m prototype. The sensing scheme presented for ET-LF could also be tested in GEO600 since this detector presently suffers from signal recycling cavity length (SRCL) control noise. Different fundamental questions may be addressed by deploying the new sensing scheme at AEI 10m prototype versus GEO600. While the scheme implemented through the input port of the interferometer at the AEI 10m prototype would allow us to understand the influence of cavity stability parameters on control signals, the scheme implemented through the dark port of GEO600 (as proposed for ET-LF) provides answers for the mitigation of the SRCL control noise in the interferometer.
Water table and organic substrate as triggers of greenhouse gas emissions from rewetted peatlands
Creators: name: Hahn-Schöfl, Maria
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Greenhouse gases
subject: peatland
subject: rewetting
subject: Treibhausgase
subject: Moor
subject: Wiedervernässung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: [no abstract]
Production of one and two $c \bar c$ pairs at LHC
Creators: name: Szczurek, Antoni
name: Maciula, Rafal
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report on charm production at LHC. The production of single $c \bar c$ pairs is calculated in the $k_t$-factorization approach with different unintegrated gluon distributions. Examples of transverse momentum distributions for charmed mesons are presented and compared to recent experimental results from LHC. Some missing strength is observed for most of UGDFs. Furthermore we discuss production of two $c \bar c$ pairs within double-parton scattering (DPS) and single-parton scattering (SPS) mechanisms. Surprisingly large cross sections, comparable to single $c \bar c$ pair production are predicted. We discuss first experimental results from LHCb collaboration on production of pairs of $D$ mesons of the same flavour.
description: 5 pages, 4 figures, invited talk by A. Szczurek at the international workshop Diffraction2012, Puerto del Carmen, Lanzarote, Spain, September 10-15, 2012
Test of the formal basis of Arrhenius law with heat capacities
Creators: name: Michel, Denis
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The exponential factor of Arrhenius satisfactorily quantifies the energetic restriction of chemical reactions but is still awaiting a rigorous basis. Assuming that the Arrhenius equation should be based on statistical mechanics and is probabilistic in nature, two structures for this equation are compared, depending on whether the reactant energies are viewed as the mean values of specific energy distributions or as particular levels in a global energy distribution. In the first version, the Arrhenius exponential factor would be a probability that depends once on temperature, while in the second it is a ratio of probabilities that depends twice on temperature. These concurrent equations are tested using experimental data for the isomerization of 2-butene. This comparison reveals the fundamental structure of the Arrhenius law in isothermal systems and overlooked properties resulting from the introduction of reactant energies into the equation.
description: 11 pages, 5 figures
When in doubt ask the crowd : leveraging collective intelligence for improving event detection and machine learning
Creators: name: Georgescu, Mihai
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Collective intelligence
subject: event detection
subject: crowdsourcing
subject: active learning
subject: Kollektive Intelligenz
subject: Ereignisdetektion
subject: aktives Lernen
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
The cold gas content of post-starburst galaxies
Creators: name: Zwaan, Martin A.
name: Kuntschner, Harald
name: Pracy, Michael B.
name: Couch, Warrick J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Post-starburst galaxies, or E+A galaxies, are characterized by optical spectra showing strong Balmer absorption lines, indicating a young stellar population, and little or no emission lines, implying no active star formation. These galaxies are interpreted as a transitional population between star-forming, disk-dominated galaxies and spheroidal quiescent, non-star forming galaxies. Here, we present single dish HI 21-cm emission line measurements of a sample of eleven of these galaxies at redshifts z<0.05. We detect H I emission in six of the E+A galaxies. In combination with earlier studies, the total number of E+A galaxies with measured cold gas components is now eleven. Roughly half of the E+As studied so far have detectable HI. The gas fractions of these galaxies, measured with respect to their stellar mass, are between 1 and 10 percent and are at the high end of the gas fractions measured in gas-bearing early type galaxies and typically lower than seen in late-type galaxies with comparable stellar masses. This finding is consistent with the idea that E+As are currently evolving from the blue cloud to the red sequence. However, the question of why the star formation has ceased in these galaxies while a significant gas reservoir is still present can only be answered by higher spatial resolution observations of the cold gas.
description: Accepted for publication in MNRAS, 8 pages, 4 figures
title: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 8, Nr. 2 (1924)
title: Germania
titleType: AlternativeTitle
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2015

description: Die Gottheiten der Equites singulares und die Juppitersäulen...49-60
Eine Schussenrieder Siedlung bei Cannstatt...60-65
Ein frührömisches Gräberfeld in Selbach (Landesteil Birkenfeld)...65-66
Die Zenturieninschriften auf den Holzspeeren von Oberaden...66-68
Der „Heidenkeller", eine römische Grabkammer bei Nehren a. d. Mosel...68-73
Epigraphische Miscellen...73-78
Römische Brunnenanlage von Katzenbach (Rheinpfalz)...78-80
Die ältesten römischen Amphoren am Rhein und in Gallien...80-82
Eine spiralkeramische Siedlung bei Nördlingen...82-85
Frühkaiserlicher römischer Denarfund aus Köln...85-88
Aus dem Wallraf-Richartz-Museum in Köln...88-91
Eine Stadttordarstellung auf Trierer Terrakotten...91-94
Neue Beobachtungen an süddeutschen Grabhügeln...94
Nachtrag...94
Literatur...95-96
Water and CO2 solubilities in rhyolitic to basaltic melts : experimental determination and calibration for IR spectroscopy = Wasser und CO2 Löslichkeiten in rhyolitischen bis basaltischen Schmelzen : experimentalle Bestimmung und Kalibration für IR Spektroskopie
Creators: name: Ohlhorst, Susanne
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Water
subject: CO2
subject: solubility
subject: dacitic melt
subject: IR spectroscopy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Veronica aphylla
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. aphylla X bellidioides Cat. 275. FraglicherBastard.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Transmission statistics and focusing in single disordered samples
Creators: name: Davy, Matthieu
name: Shi, Zhou
name: Wang, Jing
name: Genack, Azriel Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show in microwave experiments and random matrix calculations that in samples with a large number of channels the statistics of transmission for different incident channels relative to the average transmission is determined by a single parameter, the participation number of the eigenvalues of the transmission matrix, M. Its inverse, M-1, is equal to the variance of relative total transmission of the sample, while the contrast in maximal focusing is equal to M. The distribution of relative total transmission changes from Gaussian to negative exponential over the range in which M-1 changes from 0 to 1. This provides a framework for transmission and imaging in single samples.
description: 9 pages, 4 figures
Viscous flow of magmas from Unzen volcano, Japan : implication for magma mixing and ascent = Viskositäten von Magmen des Unzen Vulkans, Japan : Bedeutung für Magmenmischung und -aufstieg
Creators: name: Vetere, Francesco P.
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Viscosity
subject: magma
subject: Unzen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Galaxy and Mass Assembly (GAMA): Witnessing the assembly of the cluster Abell 1882
Creators: name: Owers, M. S.
name: Baldry, I. K.
name: Bauer, A. E.
name: Bland-Hawthorn, J.
name: Brown, M. J. I.
name: Cluver, M. E.
name: Colless, M.
name: Driver, S. P.
name: Edge, A. C.
name: Hopkins, A. M.
name: van Kampen, E.
name: Lara-Lopez, M. A.
name: Liske, J.
name: Loveday, J.
name: Pimbblet, K. A.
name: Ponman, T.
name: Robotham, A. S. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a combined optical and X-ray analysis of the rich cluster Abell 1882 with the aim of identifying merging substructure and understanding the recent assembly history of this system. Our optical data consist of spectra drawn from the Galaxy and Mass Assembly (GAMA) survey, which lends itself to this kind of detailed study thanks to its depth and high spectroscopic completeness. We use 283 spectroscopically confirmed cluster members to detect and characterize substructure. We complement the optical data with X-ray data taken with both Chandra and XMM. Our analysis reveals that A1882 harbors two main components, A1882A and A1882B, which have a projected separation of 2Mpc and a line of sight velocity difference of v_{los}=-428km/s. The primary system, A1882A, has velocity dispersion sigma_v=500km/s and Chandra (XMM) temperature kT=3.57keV (3.31keV) while the secondary, A1882B, has sigma_v=457km/s and Chandra (XMM) temperature kT=2.39keV (2.12keV). The optical and X-ray estimates for the masses of the two systems are consistent within the uncertainties and indicate that there is twice as much mass in A1882A (M_{500}=1.5-1.9x10^{14}Msolar) when compared with A1882B (M_{500}=0.8-1.0x10^{14}Msolar). We interpret the A1882A/A1882B system as being observed prior to a core passage. Supporting this interpretation is the large projected separation of A1882A and A1882B and the dearth of evidence for a recent (<2Gyr) major interaction in the X-ray data. Two-body analyses indicate that A1882A and A1882B form a bound system with bound incoming solutions strongly favored. We compute blue fractions of f_b=0.28 and 0.18 for the spectroscopically confirmed member galaxies within r_{500} of the centers of A1882A and A1882B, respectively. These blue fractions do not differ significantly from the blue fraction measured from an ensemble of 20 clusters with similar mass and redshift.
description: 20 pages, 10 figures, 6 tables. Accepted for publication in ApJ
Phase Diagram of a Diluted Triangular Lattice Ising Antiferromagnet in a Field
Creators: name: Žukovič, M.
name: Borovský, M.
name: Bobák, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Magnetization processes and phase transitions in a geometrically frustrated triangular lattice Ising antiferromagnet in the presence of an external magnetic field and a random site dilution are studied by the use of an effective-field theory with correlations. We find that the interplay between the applied field and the frustration-relieving dilution results in peculiar phase diagrams in the temperature-field-dilution parameter space.
description: 18 pages, 7 figures
Nationalismus als Ideologie ethnischer Identifikation : peripherer Nationalismus und nationale Befreiungsbewegungen in Spanien
Creators: name: Mense, Thorsten
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Spain
subject: Catalonia
subject: Basque country
subject: nationalism
subject: national liberation
subject: critical theory
subject: ideology
subject: Spanien
subject: Katalonien
subject: Baskenland
subject: Nationalismus
subject: nationale Befreiung
subject: kritische Theorie
subject: Ideologie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: [no abstract]
Biotechnologische Prozesse mit Basidiomyceten zur Produktion von Enzymen und Aromastoffen
Creators: name: Rheinheimer, Matthias
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Basidiomycete
subject: flavour
subject: enzyme
subject: Basidiomycet
subject: Aromastoff
subject: Enzym
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
A multilayer anisotropic plate model with warping functions for the study of vibrations reformulated from Woodcock's work
Creators: name: Loredo, Alexandre
name: Castel, Alexis
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper, a plate model suitable for static and dynamic analysis of inhomogeneous anisotropic multilayered plates is described. This model takes transverse shear variation through the thickness of the plate into account by means of warping functions which are determined by enforcing kinematic and static assumptions at the layers interfaces. This model leads to a 10 x 10 behavior matrix in which membrane strains, bending curvatures, and transverse shear x and y-derivatives are coupled, and to a classical 2 x 2 shear behavior matrix. This model has been proven to be very efficient, especially when high ratios -up to 10E5- between the stiffnesses of layers are present. This work is related to Woodcock's model, so it can be seen as a reformulation of his work. However, it propose several enhancements: the displacement field is made explicit; it is reformulated with commonly used plate notations; laminate equations of motion are fully detailed; the place of this model relatively to other plate models is now easy to see and is discussed; the link between this formulation and the original one is completely written with all necessary proofs; misses and errors have been found in the energy coefficients of the original work, and then have been corrected; it is now easy to improve or to adapt the model for specific applications with the choice of refined or specific warping functions.
A thermoelectric heat engine with ultracold atoms
Creators: name: Brantut, Jean-Philippe
name: Grenier, Charles
name: Meineke, Jakob
name: Stadler, David
name: Krinner, Sebastian
name: Kollath, Corinna
name: Esslinger, Tilman
name: Georges, Antoine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Thermoelectric effects, such as the generation of a particle current by a temperature gradient, have their origin in a reversible coupling between heat and particle flows. These effects are fundamental probes for materials and have applications to cooling and power generation. Here we demonstrate thermoelectricity in a fermionic cold atoms channel, ballistic or diffusive, connected to two reservoirs. We show that the magnitude of the effect and the efficiency of energy conversion can be optimized by controlling the geometry or disorder strength. Our observations are in quantitative agreement with a theoretical model based on the Landauer-Bu ttiker formalism. Our device provides a controllable model-system to explore mechanisms of energy conversion and realizes a cold atom based heat engine.
Activation cross-sections of longer lived products of proton induced nuclear reactions on manganese up to 70 MeV
Creators: name: Ditrói, F.
name: Tárkányi, F.
name: Takács, S.
name: Hermanne, A.
name: Yamazaki, H.
name: Baba, M.
name: Mohammadi, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: In the frame of a systematic study of the activation cross-sections of the proton induced nuclear reactions, excitation functions of the 55Mn(p,x)154,152gMn,51Cr and 48V were measured up to 70 MeV. Cross-sections were measured with the activation method using a stacked foil irradiation technique and high resolution gamma-ray spectrometry. The experimental data are analyzed and compared to the earlier results and to the prediction of the EMPIRE-3 as well as the TALYS theoretical model code in the TENDL-2012 library. From the measured cross-section data integral production yields were calculated. Practical applications of the cross-sections are discussed.
title: Cornell Criminal Records Panel Study Questionnaire Wave 2
Creators: name: Barrington, Linda
name: Bigler, Esta R.
name: Enayati, Hassan
name: Vilhuber, Lars
name: Wells, Martin T.
name: York Cornwell, Erin
Publisher: name: Cornell University Library
Year: 2019

description: Questionnaire used by the Cornell Criminal Records Panel Study. Subjects are members of the class in the law suit against the US Census Bureau. The purpose of this research is to learn more about the errors in background screening and understand how criminal records impact employment opportunities.
Optical Morphology, Inclination and Expansion Velocity of the Ejected Shell of Nova Monocerotis 2012
Creators: name: Ribeiro, V. A. R. M.
name: Munari, U.
name: Valisa, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The morphology of the ejected shell of the He/N Nova Monocerotis 2012 outburst was studied in detail. Synthetic line profile spectra were compared to the [O {\sc iii}] 4959,5007 Å emission line profiles in order to find the best fit morphology, inclination angle and maximum expansion velocity of the ejected shell. The simplest morphology was found to be that of a bipolar structure with an inclination angle of 82$\pm6$ degrees and a maximum expansion velocity of 2400$^{+300}_{-200}$ km/s (at day 130 after outburst). Such a high degree of shaping is un-expected for a system with a main sequence star (as suspected from the systems colors). The degree of shaping may be disentangled with resolved optical imaging. Furthermore, these results may be confirmed with radio imaging which is expected to follow the same gross features of the outburst as the optical band and the high inclination implied here can be corroborated with a 7.1 hour period which has been suggested to arise from partial eclipses of extended emission by an accretion disk rim.
description: Accepted for publication in ApJ, 7 pages, 6 figures, 2 tables
Der Logos der Griechen im Christentum
Creators: name: Beierwaltes, Werner
Publisher: name: Würzburger Jahrbücher für die Altertumswissenschaft
Year: 2017

description: [Nicht vorhanden / Not available]
description: Würzburger Jahrbücher für die Altertumswissenschaft, [N.F.] Bd. 35 (2011): Würzburger Jahrbücher für die Altertumswissenschaft
The Mathematician's Bias - and the Return to Embodied Computation
Creators: name: Cooper, S. Barry
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: General Literature (cs.GL)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: There are growing uncertainties surrounding the classical model of computation established by Gödel, Church, Kleene, Turing and others in the 1930s onwards. The mismatch between the Turing machine conception, and the experiences of those more practically engaged in computing, has parallels with the wider one between science and those working creatively or intuitively out in the 'real' world. The scientific outlook is more flexible and basic than some understand or want to admit. The science is subject to limitations which threaten careers. We look at embodiment and disembodiment of computation as the key to the mismatch, and find Turing had the right idea all along - amongst a productive confusion of ideas about computation in the real and the abstract worlds.
Lehnsbeziehungen im kommunalen Italien des 11. und 12. Jahrhunderts
Creators: name: Dartmann, Christoph
Publisher: name: Vorträge und Forschungen
Year: 2017

description: Vorträge und Forschungen, Bd. 76 (2013): Vorträge und Forschungen: Ausbildung und Verbreitung des Lehnwesens im Reich und in Italien im 12. und 13. Jahrhundert
Gravitational closure of matter field equations: general theory and perturbative solutions
Creators: name: Wolz, Florian
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Classical Matter Fields
subject: Modified Gravitational Theory
subject: Perturbation Theory
subject: Modifizierte Gravitationstheorie
subject: Klassische Materiefelder
subject: Perturbationstheorie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: If we require that both the geometry of spacetime and matter canonically evolve together, we are left with only few options to provide diffeomorphism-invariant dynamics to the gravitational degrees of free- dom. Concretely, as we will show in this thesis, it is possible to derive the gravitational dynamics from any matter theory, which fulfils three physically essential conditions and is formulated on a tensorial geom- etry. For this, one solves a countable set of linear partial differential equations, the gravitational closure equations, and obtains the gravitational action functional in a constructive fashion. As demonstrated in this thesis, one can obtain general relativity starting from the matter fields of the standard model of par- ticle physics by solving this system of partial differential equations. In applications where the behaviour of weak fields is of interest, this system further simplifies to linear algebraic equations for the expansion coefficients of the action functional. This was used in this thesis to derive the linear equations of motion of a gravitational theory that allows for birefringence of light in vacuo.
Modeling poly-Si/SiOx/c-Si junctions for solar cells
Creators: name: Folchert, Nils
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: carrier-selective junctions
subject: quantum-mechanical tunneling
subject: contact resistance
subject: Ladungsträgerselektive Kontakte
subject: Quantenmechanisches Tunneln
subject: Kontaktwiderstand
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Es wird ein halbanalytisches Modell zur Berechnung der elektrischen Eigenschaften von poly-Si/SiOx/c-Si Schichtstapeln zur Kontaktierung von Siliziumsolarzellen vorgestellt. Das Modell berechnet Majoritäten- und Minoritätenströme anhand der strukturellen Schichteigenschaften in Abhängigkeit der angelegten Spannung, der Beleuchtung und der Temperatur. Das Modell wird mit finite-Elemente-Simulationen verglichen und zur Bestimmung der Störstellendichte an der SiOx/c-Si Grenzfläche von verschiedenen Probentypen verwendet.
PTF12gzk - A Rapidly Declining, High-Velocity Type Ic Radio Supernova
Creators: name: Horesh, Assaf
name: Kulkarni, Shrinivas R.
name: Corsi, Alessandra
name: Frail, Dale A.
name: Cenko, S. Bradley
name: Ben-Ami, Sagi
name: Gal-Yam, Avishay
name: Yaron, Ofer
name: Arcavi, Iair
name: Kasliwal, Mansi M.
name: Ofek, Eran O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Only a few cases of type Ic supernovae (SNe) with high-velocity ejecta have been discovered and studied. Here we present our analysis of radio and X-ray observations of a Type Ic SN, PTF12gzk. The radio emission rapidly declined less than 10 days after explosion, suggesting SN ejecta expanding at high velocity (~0.3c). The radio data also indicate that the density of the circumstellar material (CSM) around the supernova is lower by a factor of ~10 than the CSM around normal Type Ic SNe. Our observations of this rapidly declining radio SN at a distance of 58 Mpc demonstrates the potential to detect many additional radio SNe, given the new capabilities of the VLA (improved sensitivity and dynamic scheduling), that are currently missed, leading to a biased view of radio SNe Ic. Early optical discovery followed by rapid radio observations would provide a full description of the ejecta velocity distribution and CSM densities around stripped massive star explosions, as well as strong clues about the nature of their progenitor stars.
description: 5 pages, 2 figures, submitted to ApJ
Viola lutea L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: D. lutea L. Cat. 275. l: Vallon de St-Barthelemy (F.); Ravoire (F.); La Fraise südwestlichder Arpille (F.). - 2: Ob Branson und Fully (Garns); Bisse de Saviese (Marietan). - 3: Som la Proz; La Seiloz-La Fouly; IVtont Brun ob Sembrancher (alles: Melly); im Val de Bagnes bis 1450m unterhalb Fionnay (Zwicky); Villette im Val d'Herens (J.); Grone-Loye (Marietan); Les Pontis (Sulger) und Fang (Kummer) im Val d'Anniviers; zwischen Tuminen und Hübsch im Turtmanntal (Maillefer); ob Randa gegen die Weisshornhütte (Huber). - 3a:Umgebung von Gondo, mehrfach (Becherer). - 4: Mörel; Grengiols; Twingen (alles: Schmid).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Zur Baugeschichte des Rathauses von Neckarzimmern. Ein Prachtbau im Wandel der Zeit
Creators: name: Kollia-Crowell, Barbara
name: Crowell, Robert
Publisher: name: Südwestdeutsche Beiträge zur historischen Bauforschung
Year: 2017

description: [nicht vorhanden / not available]
description: Südwestdeutsche Beiträge zur historischen Bauforschung, Bd. 7 (2007)
Klappentext
Creators: name: Spieß, Karl-Heinz
Publisher: name: Vorträge und Forschungen
Year: 2015

description: Vorträge und Forschungen, Bd. 76 (2013): Vorträge und Forschungen: Ausbildung und Verbreitung des Lehnwesens im Reich und in Italien im 12. und 13. Jahrhundert
Dielectric spectroscopy of a ferroelectric nematic liquid crystal and the effect of the sample thickness
Creators: name: Erkoreka, Aitor
name: Martinez-Perdiguero, Josu
name: Mandle, Richard J.
name: Mertelj, Alenka
name: Sebastián, Nerea
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The recently discovered ferroelectric nematic liquid crystals have been reported to exhibit very large dielectric permittivity values. Here, we report a systematic investigation of the dielectric behavior of a prototypical ferroelectric nematogen by varying the thickness of the parallel capacitor measuring cell. While in the non-polar high temperature nematic phase results show only slight differences due to slight variations of the alignment, the measured permittivity values in the ferroelectric nematic phase show a linear dependence on the cell thickness. It is also shown that the characteristic relaxation frequency decreases inversely proportionally to the thickness. The results are discussed in terms of three different available models based on different underlying mechanisms, accounting for cancellation of the probe electric fields by polarization reorientation or by ionic charges, or based on a recently proposed continuous phenomenological model.
Time Variability of Emission Lines for Four Active T Tauri Stars (I): October--December in 2010
Creators: name: Chou, Mei-Yin
name: Takami, Michihiro
name: Manset, Nadine
name: Beck, Tracy
name: Pyo, Tae-Soo
name: Chen, Wen-Ping
name: Panwar, Neelam
name: Karr, Jennifer L.
name: Shang, Hsien
name: Liu, Hauyu Baobab
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present optical spectrophotometric monitoring of four active T Tauri stars (DG Tau, RY Tau, XZ Tau, RW Aur A) at high spectral resolution ($R \ga 1 \times 10^4$), to investigate the correlation between time variable mass ejection seen in the jet/wind structure of the driving source and time variable mass accretion probed by optical emission lines. This may allow us to constrain the understanding of the jet/wind launching mechanism, the location of the launching region, and the physical link with magnetospheric mass accretion. In 2010, observations were made at six different epochs to investigate how daily and monthly variability might affect such a study. We perform comparisons between the line profiles we observed and those in the literature over a period of decades and confirm the presence of time variability separate from the daily and monthly variability during our observations. This is so far consistent with the idea that these line profiles have a long term variability (3-20 years) related to episodic mass ejection suggested by the structures in the extended flow components. We also investigate the correlations between equivalent widths and between luminosities for different lines. We find that these correlations are consistent with the present paradigm of steady magnetospheric mass accretion and emission line regions that are close to the star.
description: Accepted for publication in AJ
Majorization relations and entanglement generation in a beam splitter
Creators: name: Gagatsos, C. N.
name: Oreshkov, O.
name: Cerf, N. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We prove that a beam splitter, one of the most common optical components, fulfills several classes of majorization relations, which govern the amount of quantum entanglement that it can generate. First, we show that the state resulting from k photons impinging on a beam splitter majorizes the corresponding state with any larger photon number k'>k, implying that the entanglement monotonically grows with k. Then, we examine parametric infinitesimal majorization relations as a function of the beam-splitter transmittance, and find that there exists a parameter region where majorization is again fulfilled, implying a monotonic increase of entanglement by moving towards a balanced beam splitter. We also identify regions with a majorization default, where the output states become incomparable. In this latter situation, we find examples where catalysis may nevertheless be used in order to recover majorization. The catalyst states can be as simple as a path-entangled single-photon state or a two-mode vacuum squeezed state.
Variational approximation and the use of collective coordinates
Creators: name: Dawes, J. H. P.
name: Susanto, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider propagating, spatially localised waves in a class of equations that contain variational and non-variational terms. The dynamics of the waves is analysed through a collective coordinate approach. Motivated by the variational approximation, we show that there is a natural choice of projection onto collective variables for reducing the governing (nonlinear) partial differential equation (PDE) to coupled ordinary differential equations (ODEs). This projection produces ODEs whose solutions are exactly the stationary states of the effective Lagrangian that would be considered from applying the variational approximation method. We illustrate our approach by applying it to a modified Fisher equation for a travelling front, containing a non-constant-coefficient nonlinear term. We present numerical results that show that our proposed projection captures both the equilibria and the dynamics of the PDE much more closely than previously proposed projections.
description: To appear in PRE (2013)
Reentrant Phase Transitions in Rotating AdS Black Holes
Creators: name: Altamirano, Natacha
name: Kubiznak, David
name: Mann, Robert B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the thermodynamics of higher-dimensional singly spinning asymptotically AdS black holes in the canonical (fixed J) ensemble of extended phase space, where the cosmological constant is treated as pressure and the corresponding conjugate quantity is interpreted as thermodynamic volume. Along with the usual small/large black hole phase transition, we find a new phenomenon of reentrant phase transitions for all d>5 dimensions, in which a monotonic variation of the temperature yields two phase transitions from large to small and back to large black holes. This situation is similar to that seen in multicomponent liquids.
description: 5 pages, 6 figures
Automatic continuity of biorthogonality preservers between compact C$^*$-algebras and von Neumann algebras
Creators: name: Burgos, Mar\' ia
name: Garcés, Jorge J.
name: Peralta, Antonio M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We prove that every biorthogonality preserving linear surjection between two dual or compact C$^*$-algebras or between two von Neumann algebras is automatically continuous.
description: arXiv admin note: text overlap with arXiv:2402.00517
Logarithmic conformal invariance in the Abelian sandpile model
Creators: name: Ruelle, Philippe
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review the status of the two-dimensional Abelian sandpile model as a strong candidate to provide a lattice realization of logarithmic conformal invariance with central charge c=-2. Evidence supporting this view is collected from various aspects of the model. These include the study of some conformally invariant boundary conditions, and the corresponding boundary condition changing fields, the calculation of correlations of certain bulk and boundary observables (the height variables) as well as a proper account of the necessary dissipation, which allows for a physical understanding of some of the strange but generic features of logarithmic theories.
description: Invited review by J. Phys. A for special issue on Logarithmic CFT; 43 pages
Characterization and Improvement of Axial and Radial Stiffness of Contactless Thrust Superconducting Magnetic Bearings
Creators: name: Valiente-Blanco, Ignacio
name: Diez-Jimenez, Efren
name: Cristache, Cristian
name: Alvarez-Valenzuela, Marco A.
name: Perez-Diaz, Jose L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Contactless bearings based on both permanent magnets and superconducting magnetic levitation are interesting to avoid all the tribological problems associated with contact at very low temperature. Superconducting magnetic bearings (SMBs) find application in mechanical engineering where lack of contact is a requirement or an advantage. In comparison with active magnetic bearings (AMBs), SMBs solve their inherent instability and require less complex control strategies and electronics. However, one of the current limitations is their low mechanical stiffness. Force densities are considerably lower in SMB than the state-of-art values for AMB. This fact certainly limits their applications. In this chapter, we summarize some key strategies for the improvement of radial and axial stiffness among with a description of some SMB in terms of load capability or force relaxation and discuss their advantages and disadvantages.A set of rules for the mechanical design of high-stiffness thrust superconducting magnetic bearings are proposed and experimentally demonstrated. Keywords Low-temperature tribology
description: accepted paper after embargo period