cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of load reduction mechanisms on loads and blade bearing movements of wind turbines
Creators: name: Stammler, Matthias
name: Thomas, Philipp
name: Reuter, Andreas
name: Schwack, Fabian
name: Poll, Gerhard
Publisher: name: Chichester : John Wiley and Sons Ltd
Year: 2019
Subjects: subject: Blade Bearing
subject: Individual Pitch Control
subject: Rolling contact fatigue
subject: Slewing Bearing
subject: Wear
subject: Electric load management
subject: Fatigue of materials
subject: Friction
subject: Power control
subject: Roller bearings
subject: Wear of materials
subject: Wind turbines
subject: Cost of energies
subject: Individual pitch control
subject: Life expectancies
subject: Model calculations
subject: Slewing bearings
subject: Structural component
subject: Wind turbine blades
subject: Turbomachine blades
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The power control of wind turbines is usually realized via a change in the pitch angle of the rotor blades. Pitching facilitates the exact control of the turbines and the reliable deceleration of the rotor when required. Pitch movements can moreover be used for load control. One of these methods is called individual pitch control (IPC). IPC controls the blades individually and brings about a significant reduction in the fatigue loads and extreme loads placed on the structural components, while at the same time reducing the yield of the turbine only slightly. The lower loads reduce material costs, and thus, the cost of energy (CoE) is reduced, despite the slight reduction in yield. The method is nevertheless not used everywhere since the additional movement cycles put the rotor blade bearings in particular under stress. Special attention must be paid to small amplitude oscillating movements, which carry a high risk of inducing surface damage in the rolling contacts of the blade bearings. This paper uses a cycle analysis of the IWT7.5-164 reference turbine to illustrate the differences in the movement patterns of wind turbine blade bearings with and without IPC. Moreover, model calculations with single contacts are used to show which of the movement patterns carries a risk of inducing surface damage. The use of IPC leads to the expected load reduction at the blade root. In current literature, IPC is usually assumed to have a negative influence on the life expectancy of blade bearings, but the findings of this study contradict this. The summed blade bearing movement is increased, although the number of very small pitch angles occurring is reduced. This reduction reduces the risk of wear in the blade bearings.
title: Vorträge und Forschungen: Sonderbände, Vol 43 (1997): Jürgen Petersohn: Helmut Beumann (1912 – 1995)
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Helmut Beumann (1912 – 1995)
title: Vorträge und Forschungen: Sonderbände, Vol 42 (1998): Doris Hellmuth: Frau und Besitz
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Zum Handlungsspielraum von Frauen in Alamannien (700 - 940)
description: Zum Handlungsspielraum von Frauen in Alamannien (700 - 940)
description: Frau und Besitz. Zum Handlungsspielraum von Frauen in Alamannien (700 – 940)
N=2 supersymmetric gauge theories with nonpolynomial interactions
Creators: name: Theis, Ulrich Clemens
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Supersymmetry
subject: gauge theories
subject: central charge
subject: Supersymmetrische Eichtheorie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Bell inequality violations under reasonable and under weak hypotheses
Creators: name: de Faria, Edson
name: Tresser, Charles
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given a sequence of pairs of spin-one half particles in the singlet state, assume that Alice measures the normalized projections along some vector of the spins of one vector per pair along that vector while Bob measures the normalized projections along some vector of the spins of the other member of each pair. Then Quantum Mechanics, or QM, lets one evaluate the correlation of the projections along these two vectors as minus the cosinus of the angle between said vectors; we assume that all vectors are chosen in a fixed plane. Assuming Classical Microscopic Realism, or CMR, there exist also normalized projection pairs of the spins of the pairs of particles along some other pair of vectors. Assuming QM and MR, we also have that the correlations of the projections along the other vectors as minus the cosinus of the angle between the extra vectors. Assuming Locality,i.e., the impossibility of any effect of an event on another event when said events are spatially separated, beside QM and MR, the theory of Bell lets one deduce various violations of some inequalities at some choices of quadruplets of the vectors that have been chosen. Our main result is the existence of quadruplets where at least one of the said inequalities is violated if one only assumes QM, MR and some very mild further hypotheses. These weak hypotheses only concern the behavior of correlations that we use near special quadruplets. We thus get versions of Bell's theorem that are strictly stronger than the original one and in particular do not assume Locality.
description: 4 pages, 1 figure
Internal structures and circular orbits for test particles
Creators: name: Zhang, Ming
name: Jiang, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore how the internal structure of a test particle affects its equatorial stable circular orbits around the Kerr black hole with or without a cosmological constant. To this end, we first explicitly write equations of motion for a test particle in the pole-dipole-quadrupole approximation specifying the quadrupole momentum tensor to a spin-induced model. Then we calculate characteristic quantities -- radius, angular momentum, energy, angular velocity, and impact parameter -- for the particles on the stable circular orbits. Once the pole-dipole-quadrupole approximation is taken, we find that for a particle on an innermost stable circular orbit, all characteristic quantities, except the angular velocity, become greater relative to the pole-dipole case. In contrast, for a particle on an outermost stable circular orbit, which only exists in the case of the spacetime background being asymptotically de Sitter, it is the radius that becomes smaller while all other quantities become greater.
Synthesis of Nanoparticles of the Giant Dielectric Material, CaCu3Ti4O12 from a Precursor Route
Creators: name: Thomas, P.
name: Dwarakanath, K.
name: Varma, K. B. R.
name: Kutty, T. R. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A complex oxalate precursor, CaCu3(TiO)4(C2O4)8.9H2O, was synthesized and the precipitate that obtained was confirmed to be monophasic by the wet chemical analyses, X-ray diffraction, FTIR absorption and TG, DTA analyses. The thermal decomposition of this oxalate precursor led to the formation of phase-pure calcium copper titanate, CaCu3Ti4O12, at 680oC. The bright field TEM micrographs revealed that the size of the as synthesized crystallites to be in the 30 to 80 nm range. The powders so obtained had excellent sinterability resulting in high density ceramics which exhibited giant dielectric constants upto 40000 (1 kHz) at 25oC accompanied by low dielectric losses, less than 0.07.
description: arXiv admin note: substantial text overlap with arXiv:1301.4064
A Greedy Algorithm to Compute Arrangements of Lines in the Projective Plane
Creators: name: Cuntz, Michael
Publisher: name: New York, NY : Springer
Year: 2021
Subjects: subject: Matroid
subject: Reflection group
subject: Simplicial arrangement
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: We introduce a greedy algorithm optimizing arrangements of lines with respect to a property. We apply this algorithm to the case of simpliciality: it recovers all known simplicial arrangements of lines in a very short time and also produces a yet unknown simplicial arrangement with 35 lines. We compute a (certainly incomplete) database of combinatorially simplicial complex arrangements of hyperplanes with up to 50 lines. Surprisingly, it contains several examples whose matroids have an infinite space of realizations up to projectivities. © 2021, The Author(s).
Robust multigrid methods for nearly incompressible elasticity using macro elements
Creators: name: Farrell, Patrick E.
name: Mitchell, Lawrence
name: Scott, L. Ridgway
name: Wechsung, Florian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 65N55

description: We present a mesh-independent and parameter-robust multigrid solver for the Scott-Vogelius discretisation of the nearly incompressible linear elasticity equations on meshes with a macro element structure. The discretisation achieves exact representation of the limiting divergence constraint at moderate polynomial degree. Both the relaxation and multigrid transfer operators exploit the macro structure for robustness and efficiency. For the relaxation, we use the existence of local Fortin operators on each macro cell to construct a local space decomposition with parameter-robust convergence. For the transfer, we construct a robust prolongation operator by performing small local solves over each coarse macro cell. The necessity of both components of the algorithm is confirmed by numerical experiments.
No evidence for radius inflation in hot Jupiters from vertical advection of heat
Creators: name: Schneider, Aaron David
name: Carone, Ludmila
name: Decin, Leen
name: Jørgensen, Uffe Gråe
name: Helling, Christiane
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Understanding the radiative-dynamical coupling between upper photosphere and deeper atmosphere is a key in understanding the abnormal large radii of hot Jupiters. One needs very long integration times of 3D general circulation models (GCMs) with self consistent radiative transfer to achieve a better understanding of the feedback process between dynamics and radiation. We here present the longest 3D non-gray GCM study (86000 d) of an ultra hot Jupiter (WASP-76 b) published to this date that reached a final converged state. Furthermore, we present a method that can be used to accelerate the path towards temperature convergence in the deep atmospheric layers. We find that the final converged temperature profile is cold in the deep atmospheric layers, lacking any sign of vertical transport of potential temperature by large scale atmospheric motions. We thus conclude that the coupling between radiation and dynamics alone is not sufficient to explain the abnormal large radii of inflated hot gas giants.
description: Accepted for publication in Astronomy and Astrophysics, Letters to the editor
Product-Service-Systems : What and why Developers can learn from Mass Customization
Creators: name: Gembarski, Paul Christoph
name: Lachmayer, Roland
Publisher: name: Bonn : Gesellschaft für Informatik
Year: 2018
Subjects: subject: Product-Service-System Configuration
subject: Mass Customization
subject: Solution Space Modeling
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: Despite their very similar objectives, delimitations or associations between the two business types of mass customization and providers of product-service-systems (PSS) cannot be found in literature. In the following article, both business types are compared with each other and mapped into a common businesstypological framework, the product-process-baseline-change matrix. Following that, the development of PSS is characterized especially with regard to the (re-)configurability of PSS over the life-cycle. Since product configuration is one of the key tools in the development and the customer co-design process in mass customization, its application to PSS is evaluated and present PSS-configuration approaches are discussed.
Optomechanical sideband asymmetry explained by stochastic electrodynamics
Creators: name: Novotny, Lukas
name: Frimmer, Martin
name: Militaru, Andrei
name: Norrman, Andreas
name: Romero-Isart, Oriol
name: Maurer, Patrick
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Within the framework of stochastic electrodynamics we derive the noise spectrum of a laser beam reflected from a suspended mirror. The electromagnetic field follows Maxwell's equations and is described by a deterministic part that accounts for the laser field and a stochastic part that accounts for thermal and zero-point background fluctuations.Likewise, the mirror motion satisfies Newton's equation of motion and is composed of deterministic and stochastic parts, similar to a Langevin equation. We consider a photodetector that records the power of the field reflected from the mirror interfering with a frequency-shifted reference beam (heterodyne interferometry). We theoretically show that the power spectral density of the photodetector signal is composed of four parts: (i) a deterministic term with beat notes, (ii) shot noise, (iii) the actual heterodyne signal of the mirror motion and (iv) a cross term resulting from the correlation between measurement noise (shot noise) and backaction noise (radiation pressure shot noise). The latter gives rise to the Raman sideband asymmetry observed with ultracold atoms, cavity optomechanics and with levitated nanoparticles. Our classical theory fully reproduces experimental observations and agrees with the results obtained by a quantum theoretical treatment.
description: 12 pages, 3 figures
title: Vorträge und Forschungen: Sonderbände, Vol 49 (2005): Brigitte Hotz: Päpstliche Stellenvergabe am
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Die avignonesische Periode (1316 – 1378) und die Domherrengemeinschaft beim Übergang zum Schisma (1378)
description: Die avignonesische Periode (1316 – 1378) und die Domherrengemeinschaft beim Übergang zum Schisma (1378)
description: Päpstliche Stellenvergabe am Konstanzer Domkapitel. Die avignonesische Periode (1316 – 1378) und die Domherrengemeinschaft beim Übergang zum Schisma (1378)
title: Vorträge und Forschungen: Sonderbände, Vol 56 (2011): Kathrin Jost: Konrad Justinger (ca. 1365 – 1438): Chronist und Finanzmann in Berns großer Zeit
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Um Konrad Justinger, den ersten Berner Chronisten, ranken sich viele Mythen und Hypothesen. Erstmals unterzieht die Studie die Quellen zu Justingers Leben und Werk – darunter auch Neuentdeckungen – der schon lange fälligen kritischen Prüfung und legt neue, zum Teil unerwartete Erkenntnisse über Justingers Herkunft, Lehrzeit und Karriere vor. Konrad Justinger ist aber keineswegs nur für die bernische Geschichtsschreibung von Bedeutung, sondern für die spätmittelalterliche Stadtchronistik im ganzen deutschen Sprachgebiet. In einem zweiten Teil widmet sich die Studie dem Konzept von Justingers amtlicher Berner Chronik, die eines der ersten und schönsten Beispiele städtischer Geschichtsschreibung im süddeutschen Raum darstellt.
description: Konrad Justinger (ca. 1365 – 1438): Chronist und Finanzmann in Berns großer Zeit
Dynamical Effects on the Habitable Zone for Earth-like Exomoons
Creators: name: Forgan, Duncan
name: Kipping, David
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: With the detection of extrasolar moons (exomoons) on the horizon, it is important to consider their potential for habitability. If we consider the circumstellar Habitable Zone (HZ, often described in terms of planet semi-major axis and orbital eccentricity), we can ask, "How does the HZ for an Earth-like exomoon differ from the HZ for an Earth-like exoplanet?" For the first time, we use 1D latitudinal energy balance modelling to address this question. The model places an Earth-like exomoon in orbit around a Jupiter mass planet, which in turn orbits a Sun-like star. The exomoon's surface temperature is evolved under the action of stellar insolation, atmospheric cooling, heat diffusion, eclipses and tidal heating. We use this model to carry out two separate investigations. In the first, four test cases are run to investigate in detail the dependence of the exomoon climate on orbital direction, orbital inclination, and on the frequency of stellar eclipse by the host planet. We find that lunar orbits which are retrograde to the planetary orbit exhibit greater climate variations than prograde orbits, with global mean temperatures around 0.1 K warmer due to the geometry of eclipses. If eclipses become frequent relative to the atmospheric thermal inertia timescale, climate oscillations become extremely small. In the second investigation, we carry out an extensive parameter study, running the model many times to study the habitability of the exomoon in the 4-dimensional space composed of the planet semi-major axis and eccentricity, and the moon semi-major axis and eccentricity. We find that for zero moon eccentricity, frequent eclipses allow the moon to remain habitable in regions of high planet eccentricity, but tidal heating severely constrains habitability in the limit of high moon eccentricity, making the habitable zone a sensitive function of moon semi-major axis.
description: 12 pages, 21 figures, accepted for publication in MNRAS
Countable graphs are majority 3-choosable
Creators: name: Haslegrave, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15 (Primary) 05C63, 05C20 (Secondary)

description: The Unfriendly Partition Conjecture posits that every countable graph admits a 2-colouring in which for each vertex there are at least as many bichromatic edges containing that vertex as monochromatic ones. This is not known in general, but it is known that a 3-colouring with this property always exists. Anholcer, Bosek and Grytczuk recently gave a list-colouring version of this conjecture, and proved that such a colouring exists for lists of size 4. We improve their result to lists of size 3; the proof extends to directed acyclic graphs. We also discuss some generalisations.
description: 6 pages. Minor changes including adding a reference
Oxytropis lapponica J. Gay
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: 0. lapponica (Wahlenb.) J. Gay (A. lapponicus Burnat) Cat. 74. Bis 3130 m; abwärtsbis 1620 m. l: Gagnerie (Dents-du-Midi), 2000 m (Beauverd); Vieux-Emosson, 2300 m (Briquet). - 3: La Tsissette in der CombedeLa (F. Chodat);Bonatchesse-Mauvoisin(Miller); Vald'Herensvielfach (Pannatier); Garde de Bordon zwischen dem Val de Moiry und demVal d'Anniviers (Bernoulli); Sorebois (idem); Turtmanntal (Beauverd); ob Törbel, 2100-2350 m (Stehler); Zermatt, hohe Stellen: Oberrothorn, 3050 m (Braun-Blanquet 1919), ebenda3130m (Gilomen 1938);tiefe:beim Dorf Zermatt, 1620 m (Thellung 1919); Saastal neuerdings mehrfach (Mantz, Höhn, Becherer u.a.), abwärtsbis1620m beiGrund (Becherer 1940). - 4: Ernergalen (Kneucker).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Estimating road segments using natural point correspondences of GPS trajectories
Creators: name: Leichter, Artem
name: Werner, Martin
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: Averaging
subject: GPS
subject: Road network
subject: Segments
subject: Trajectory
subject: Dewey Decimal Classification::600 | Technik

description: This work proposes a fast and straightforward method, called natural point correspondences (NaPoCo), for the extraction of road segment shapes from trajectories of vehicles. The algorithm can be expressed with 20 lines of code in Python and can be used as a baseline for further extensions or as a heuristic initialization for more complex algorithms. In this paper, we evaluate the performance of the proposed method. We show that (1) the order of the points in a trajectory can be used to cluster points among the trajectories for road segment shape extraction and (2) that preprocessing using polygonal approximation improves the results of the approach. Furthermore, we show based on "averaging GPS segments" competition results, that the algorithm despite its simplicity and low computational complexity achieves state-of-the-art performance on the challenge dataset, which is composed of data from several cities and countries.
Soot particle size distribution reconstruction in a turbulent sooting flame with the split-based extended quadrature method of moments
Creators: name: Ferraro, Federica
name: Gierth, Sandro
name: Salenbauch, Steffen
name: Han, Wang
name: Hasse, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The Method of Moments (MOM) has largely been applied to investigate sooting laminar and turbulent flames. However, the classical MOM is not able to characterize a continuous particle size distribution (PSD). Without access to information on the PSD, it is difficult to accurately take into account particle oxidation, which is crucial for shrinking and eliminating soot particles. Recently, the Split-based Extended Quadrature Method of Moments (S-EQMOM) has been proposed as a numerically robust alternative to overcome this issue (Salenbauch et al., 2019). The main advantage is that a continuous particle number density function can be reconstructed by superimposing kernel density functions (KDF). Moreover, the S-EQMOM primary nodes are determined individually for each KDF, improving the moment realizability. In this work, the S-EQMOM is combined with a Large Eddy Simulation/presumed-PDF flamelet/progress variable approach for predicting soot formation in the Delft Adelaide Flame III. The target flame features low/high sooting propensity/intermittency and comprehensive flow/scalar/soot data are available for model validation. Simulation results are compared with the experimental data for both the gas phase and the particulate phase. A good quantitative agreement has been obtained especially in terms of the soot volume fraction. The reconstructed PSD reveals predominantly unimodal/bimodal distributions in the first/downstream portion of this flame, with particle diameters smaller than 100 nm. By investigating the instantaneous and statistical sooting behavior at the flame tip, it has been found that the experimentally observed soot intermittency is linked to mixture fraction fluctuations around its stoichiometric value that exhibit a bimodal probability density function.
description: Updated cover page
White organic light-emitting diodes: Status and perspective
Creators: name: Reineke, Sebastian
name: Thomschke, Michael
name: Lüssem, Björn
name: Leo, Karl
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: White organic light-emitting diodes (OLEDs) are ultra-thin, large-area light sources made from organic semiconductor materials. Over the last decades, much research has been spent on finding the suitable materials to realize highly efficient monochrome and white OLEDs. With their high efficiency, color-tunability, and color-quality, white OLEDs are emerging to become one of the next generation light sources. In this review, we discuss the physics of a variety of device concepts that are introduced to realize white OLEDs based on both polymer and small molecule organic materi als. Owing to the fact that about 80 % of the internally generated photons are trapped within the thin-film layer structure, we put a second focus on reviewing promising concepts for improved light outcoupling.
description: 53 pages, 51 figures, to be published in Review of Modern Physics
Gas Component Transport Across the Soil-Atmosphere Interface for Gases of Different Density: Experiments and Modeling
Creators: name: Bahlmann, L.M.
name: Smits, K.M.
name: Heck, K.
name: Coltman, E.
name: Helmig, R.
name: Neuweiler, I.
Publisher: name: Hoboken, NJ : Blackwell Publishing Ltd
Year: 2020
Subjects: subject: density effects
subject: gas component transport
subject: numerical modeling
subject: soil-atmosphere interface
subject: wind-induced transport
subject: Carbon dioxide
subject: Gas supply
subject: Gases
subject: Phase interfaces
subject: Porous materials
subject: Soils
subject: Tanks (containers)
subject: Wind tunnels
subject: Concentration gradients
subject: Different densities
subject: Effect of the wind
subject: Environmental studies
subject: Flow and transport
subject: Horizontal transport
subject: Near-surface winds
subject: Numerical investigations
subject: Density of gases
subject: complexity
subject: concentration (composition)
subject: experiment
subject: gas exchange
subject: gas supply
subject: gas transport
subject: interface
subject: numerical model
subject: point source
subject: soil surface
subject: wind profile
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: We investigate the influence of near-surface wind conditions on subsurface gas transport and on soil-atmosphere gas exchange for gases of different density. Results of a sand tank experiment are supported by a numerical investigation with a fully coupled porous medium-free flow model, which accounts for wind turbulence. The experiment consists of a two-dimensional bench-scale soil tank containing homogeneous sand and an overlying wind tunnel. A point source was installed at the bottom of the tank. Gas concentrations were measured at multiple horizontal and vertical locations. Tested conditions include four wind velocities (0.2/1.0/2.0/2.7 m/s), three different gases (helium: light, nitrogen: neutral, and carbon dioxide: heavy), and two transport cases (1: steady-state gas supply from the point source; 2: transport under decreasing concentration gradient, subsequent to termination of gas supply). The model was used to assess flow patterns and gas fluxes across the soil surface. Results demonstrate that flow and transport in the vicinity of the surface are strongly coupled to the overlying wind field. An increase in wind velocity accelerates soil-atmosphere gas exchange. This is due to the effect of the wind profile on soil surface concentrations and due to wind-induced advection, which causes subsurface horizontal transport. The presence of gases with pronounced density difference to air adds additional complexity to the transport through the wind-affected soil layers. Wind impact differs between tested gases. Observed transport is multidimensional and shows that heavy as well as light gases cannot be treated as inert tracers, which applies to many gases in environmental studies. © 2020. The Authors.
To Be Announced
Creators: name: van Ditmarsch, Hans
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this survey we review dynamic epistemic logics with modalities for quantification over information change. Of such logics we present complete axiomatizations, focussing on axioms involving the interaction between knowledge and such quantifiers, we report on their relative expressivity, on decidability and on the complexity of model checking and satisfiability, and on applications. We focus on open problems and new directions for research.
title: Die römischen Steindenkmäler, Inschriften und Gefäßstempel im Maximilians-Museum zu Augsburg, von M. Metzger, Augsburg 1862
Creators: name: Braun, Johann W. J.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Die römischen Steindenkmäler, Inschriften und Gefäßstempel im Maximilians-Museum zu Augsburg, beschrieben von M. Metzger, k. Studienlehrer und Conservator des römischen Antiquariums. Mit zwei lith. Beilagen. Augsb. 1862. S. 83. 8°.
Evolution and Dynamics of Cusped Light-Like Wilson Loops in Loop Space
Creators: name: Van der Veken, F. F.
name: Cherednikov, I. O.
name: Mertens, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the possible relation between the singular structure of TMDs on the light-cone and the geometrical behaviour of rectangular Wilson loops.
description: Proceedings for Diffraction 2012, Lanzarote, Spain. 5 pages, 2 figures
Proposals for a practical calibration method for mechanical torque measurement on the wind turbine drive train under test on a test bench
Creators: name: Zhang, Hongkun
name: Wenske, Jan
name: Reuter, Andreas
name: Neshati, Mohsen
Publisher: name: Chichester : Wiley
Year: 2020
Subjects: subject: drive train
subject: efficiency
subject: test bench
subject: torque calibration
subject: torque measurement
subject: wind turbine
subject: Calibration
subject: Efficiency
subject: Torque
subject: Torque measurement
subject: Uncertainty analysis
subject: Wind turbines
subject: Calibration method
subject: Drive train
subject: Electrical power
subject: Electrical power measurements
subject: Matrix operations
subject: Mechanical torque
subject: Test benches
subject: Torque calibrations
subject: Turbine components
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The mechanical torque input into the wind turbine drive train is a very useful measurement for tests performed on a test bench. To ensure the accuracy and the reliability, an accurate calibration of the torque measurement must be carried out and repeated within a certain period of time. However, owing to the high torque level and large structure size, such a calibration is both expensive and time consuming. To overcome this challenge, a new calibration method is proposed here. The method is based on the electrical power measurement, where a high level of accuracy is much easier to achieve. With the help of a special test process, a relationship between the torque-measuring signal and the electrical power can be established. The process comprises two tests with the drive train running in different operating modes. The calibration is possible by carrying out the same test process on several different torque levels. Detailed uncertainty analysis of the method is presented, whereby the uncertainty can be calculated by means of matrix operation and also numerically. As a demonstration, the implementation of the method on a test bench drive train that contains two 5-MW motors in tandem with the motors operating in a back-to-back configuration is also presented. Finally, some variations on the method and possible ways of achieving better accuracy are discussed. © 2020 The Authors. Wind Energy published by John Wiley & Sons Ltd
Can the phase of radiation pressure fluctuations be flipped in a single path for laser interferometric gravitational wave detectors?
Creators: name: Ishikawa, Tomohiro
name: Iwaguchi, Shoki
name: Wu, Bin
name: Watanabe, Izumi
name: Kawasaki, Yuki
name: Shimizu, Ryuma
name: Enomoto, Yutaro
name: Michimura, Yuta
name: Furusawa, Akira
name: Kawamura, Seiji
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Radiation pressure (RP) noise, one component of quantum noise, can limit the sensitivity of laser interferometric gravitational wave (GW) detectors at lower frequencies. We conceived a possible RP noise cancellation method, using phase flipped ponderomotive-squeezed light (FPSL) incident on free-mass mirrors in interferometers' arms. This possibility is investigated under the constraint that the method is for space-based GW detectors in a broad frequency band lower than 1 Hz without using a long optical cavity. Considering various patterns in a single path small-scale case to generate the FPSL, we proved that no configuration exists in the single path case.
description: 14 pages, 8 figures
Effect of isovector scalar meson on equation of state of dense matter within relativistic mean field model
Creators: name: Thakur, Virender
name: Kumar, Raj
name: Kumar, Pankaj
name: Kumar, Vikesh
name: Kumar, Mukul
name: Mondal, C.
name: Agrawal, B. K.
name: Dhiman, Shashi K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The effects of the isovector-scalar $δ$-meson field on the properties of finite nuclei, infinite nuclear matter and neutron stars are investigated within the Relativistic Mean Field (RMF) model which includes non-linear couplings. Several parameter sets (SRV's) are generated to asses the influence of $δ$-meson on the properties of neutron star. These parametrizations correspond to different values of coupling constant of $δ$-meson to the nucleons with remaining ones calibrated to yield finite nuclei and infinite nuclear matter properties consistent with the available experimental data. It is observed that to fit the properties of finite nuclei and infinite nuclear matter, a stronger coupling between isovector-vector $ρ$ meson and nucleons is required in the presence of $δ$ field. Furthermore, the $δ$-meson is found to affect the radius of canonical neutron star significantly. The value of dimensionless tidal deformability, $Λ$ for the canonical neutron star also satisfies the constraints from the waveform models analysis of GW170817 binary neutron star merger event. A covariance analysis is performed to estimate the statistical uncertainties of the model parameters as well as correlations among the model parameters and different observables of interest.
description: 10 pages, 5 figures (Accepted for publication in Phys. Rev. C (Sept. 2022)
Adaptive refinement for unstructured T-splines with linear complexity
Creators: name: Maier, Roland
name: Morgenstern, Philipp
name: Takacs, Thomas
Publisher: name: Amsterdam : Elsevier Science
Year: 2022
Subjects: subject: Adaptive refinement
subject: T-splines
subject: Unstructured meshes
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: We present an adaptive refinement algorithm for T-splines on unstructured 2D meshes. While for structured 2D meshes, one can refine elements alternatingly in horizontal and vertical direction, such an approach cannot be generalized directly to unstructured meshes, where no two unique global mesh directions can be assigned. To resolve this issue, we introduce the concept of direction indices, i.e., integers associated to each edge, which are inspired by theory on higher-dimensional structured T-splines. Together with refinement levels of edges, these indices essentially drive the refinement scheme. We combine these ideas with an edge subdivision routine that allows for I-nodes, yielding a very flexible refinement scheme that nicely distributes the T-nodes, preserving global linear independence, analysis-suitability (local linear independence) except in the vicinity of extraordinary nodes, sparsity of the system matrix, and shape regularity of the mesh elements. Further, we show that the refinement procedure has linear complexity in the sense of guaranteed upper bounds on a) the distance between marked and additionally refined elements, and on b) the ratio of the numbers of generated and marked mesh elements. © 2022 The Author(s)
Effects of a Pre-inflationary de Sitter Bounce on the Primordial Gravitational Waves in $f(R)$ Gravity Theories
Creators: name: Oikonomou, V. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we examine the effects of a pre-inflationary de Sitter bounce on the energy spectrum of the primordial gravitational waves. Specifically we assume that the Universe is described by several evolution patches, starting with a de Sitter pre-inflationary bounce which is followed by an quasi-de Sitter slow-roll inflationary era, followed by a constant equation of state parameter abnormal reheating era, which is followed by the radiation and matter domination eras and the late-time acceleration eras. The bounce and the inflationary era can be realized by vacuum $f(R)$ gravity and the abnormal reheating and the late-time acceleration eras by the synergy of $f(R)$ gravity and the prefect matter fluids present. Using well-known reconstruction techniques we find which $f(R)$ gravity can realize each evolution patch, except from the matter and radiation domination eras which are realized by the corresponding matter fluids. Accordingly, we calculate the damping factor of the primordial de Sitter bounce, and as we show, the signal can be detected by only one gravitational wave future experiment, in contrast to the case in which the bounce is absent. We discuss in detail the consequences of our results and the future perspectives.
description: Nuclear Physics B in press. arXiv admin note: text overlap with arXiv:2209.09781
Numerical analysis of nanostructures for enhanced light extraction from OLEDs
Creators: name: Zschiedrich, L.
name: Greiner, H.
name: Burger, S.
name: Schmidt, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Nanostructures, like periodic arrays of scatters or low-index gratings, are used to improve the light outcoupling from organic light-emitting diodes (OLED). In order to optimize geometrical and material properties of such structures, simulations of the outcoupling process are very helpful. The finite element method is best suited for an accurate discretization of the geometry and the singular-like field profile within the structured layer and the emitting layer. However, a finite element simulation of the overall OLED stack is often beyond available computer resources. The main focus of this paper is the simulation of a single dipole source embedded into a twofold infinitely periodic OLED structure. To overcome the numerical burden we apply the Floquet transform, so that the computational domain reduces to the unit cell. The relevant outcoupling data are then gained by inverse Flouqet transforming. This step requires a careful numerical treatment as reported in this paper.
Competencies for rating perceived exertion in amateur soccer players with and without intellectual disabilities
Creators: name: Schmitz, Gerd
name: Meis, Jakob M.
name: Hafferkamp, Matthias
name: Schmitz, Sabine
Publisher: name: Hoboken, NJ : Blackwell Publishing Ltd
Year: 2019
Subjects: subject: barriers
subject: cognitive processing speed
subject: executive functions
subject: intellectual disabilities
subject: perceiving exertion
subject: UN Convention on the Rights of Persons with Disabilities
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::360 | Soziale Probleme, Sozialdienste, Versicherungen

description: Background: Perception of exertion is essential for self-regulation in sports. The ability to rate perceived exertion (RPE) is regarded as psychophysiological competence, although cognitive components of RPE are largely unknown. The present study tested the hypothesis that cognitive processing speed, perseveration and figural fluency correlate with RPE. Methods: The present study tested relationships between the performance in neuropsychological tests and the competence for RPE assessed during soccer training in 30 adults with and 22 adults without intellectual disabilities. Results: Mean correlation coefficients for RPE and heart rate differed significantly between participants with intellectual disabilities (r =.41) and participants without intellectual disabilities (r =.71). The variance of RPE could be partially explained by neuropsychological performance measures reflecting cognitive processing speed and perseveration and by age. Conclusions: The results point to an impaired perception of exertion in people with intellectual disabilities, which can be partially explained by individual neuropsychological competencies.
Light-matter interactions with photonic quasiparticles
Creators: name: Rivera, Nicholas
name: Kaminer, Ido
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Interactions between light and matter play an instrumental role in many fields of science, giving rise to important applications in spectroscopy, sensing, quantum information processing, and lasers. In most of these applications, light is considered in terms of electromagnetic plane waves that propagate at the speed of light in vacuum. As a result, light-matter interactions can usually be treated as very weak, and captured at the lowest order in quantum electrodynamics (QED). However, recent progress in coupling photons to material quasiparticles (e.g., plasmons, phonons, and excitons) forces us to generalize the way we picture the photon at the core of every light-matter interaction. In this new picture, the photon, now of partly matter-character, can have greatly different polarization and dispersion, and be confined to the scale of a few nanometers. Such photonic quasiparticles enable a wealth of light-matter interaction phenomena that could not have been observed before, both in interactions with bound electrons and with free electrons. This Review focuses on exciting theoretical and experimental developments in realizing new light-matter interactions with photonic quasiparticles. As just a few examples, we discuss how photonic quasiparticles enable room-temperature strong coupling, ultrafast "forbidden transitions" in atoms, and new applications of the Cherenkov effect, as well as breakthroughs in ultrafast electron microscopy and new concepts for compact X-ray sources.
title: Vorträge und Forschungen: Sonderbände, Vol 8 (1971): Dietrich Claude: Adel, Kirche und Königtum im Westgotenreich
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Adel, Kirche und Königtum im Westgotenreich
Finite shock model of density in supersonic turbulence
Creators: name: Rabatin, Branislav
name: Collins, David C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The probability distribution of density in isothermal, supersonic, turbulent gas is approximately lognormal. This behaviour can be traced back to the shock waves travelling through the medium, which randomly adjust the density by a random factor of the local sonic Mach number squared. Provided a certain parcel of gas experiences a large number of shocks, due to the central limit theorem, the resulting distribution for density is lognormal. We explore a model in which parcels of gas undergo finite number of shocks before relaxing to the ambient density, causing the distribution for density to deviate from a lognormal. We confront this model with numerical simulations with various r.m.s. Mach numbers ranging from subsonic as low as 0.1 to supersonic at 25. We find that the fits to the finite formula are an order of magnitude better than a lognormal. The model naturally extends even to subsonic flows, where no shocks exist.
description: Accepted for publication in MNRAS
title: Vorträge und Forschungen: Sonderbände, Vol 54 (2010): Stefan Esders: Die Formierung der Zensualität
Creators: name: Vorträge Und Forschungen: Sonderbände
Publisher: name: University Library Heidelberg
Year: 2015

description: Zur kirchlichen Transformation des spätrömischen Patronatswesens im früheren Mittelalter

Die mittelalterlichen Zensualen waren kirchliche Abhängige, die seit dem 11. Jahrhundert vielerorts ihre Freiheit erkämpften. Die Studie untersucht erstmalig die Formierung dieser Gruppe seit der Spätantike. Weil die frühmittelalterliche Kirche die Freilassung von Sklaven, wenn sie in der Kirche erfolgte, als religiöse Handlung deutete, durch welche die Patronatsrechte über die freigelassene Person dem Heiligen überschrieben wurden, bildete sich unter dessen Schutz die Zensualität als eigene Gruppe heraus. Da dieser Prozess auch vom Königtum gefördert wurde, wirft die Interpretation neues Licht auf die Kommunebewegung in den hochmittelalterlichen Bischofsstädten.
description: Zur kirchlichen Transformation des spätrömischen Patronatswesens im früheren Mittelalter

Die mittelalterlichen Zensualen waren kirchliche Abhängige, die seit dem 11. Jahrhundert vielerorts ihre Freiheit erkämpften. Die Studie untersucht erstmalig die Formierung dieser Gruppe seit der Spätantike. Weil die frühmittelalterliche Kirche die Freilassung von Sklaven, wenn sie in der Kirche erfolgte, als religiöse Handlung deutete, durch welche die Patronatsrechte über die freigelassene Person dem Heiligen überschrieben wurden, bildete sich unter dessen Schutz die Zensualität als eigene Gruppe heraus. Da dieser Prozess auch vom Königtum gefördert wurde, wirft die Interpretation neues Licht auf die Kommunebewegung in den hochmittelalterlichen Bischofsstädten.
description: Die Formierung der Zensualität. Zur kirchlichen Transformation des spätrömischen Patronatswesens im früheren Mittelalter
Tracking, exploring and analyzing recent developments in German-language online press in the face of the coronavirus crisis: cOWIDplus Analysis and cOWIDplus Viewer
Creators: name: Wolfer, Sascha
name: Koplenig, Alexander
name: Michaelis, Frank
name: Müller-Spitzer, Carolin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The coronavirus pandemic may be the largest crisis the world has had to face since World War II. It does not come as a surprise that it is also having an impact on language as our primary communication tool. We present three inter-connected resources that are designed to capture and illustrate these effects on a subset of the German language: An RSS corpus of German-language newsfeeds (with freely available untruncated unigram frequency lists), a static but continuously updated HTML page tracking the diversity of the used vocabulary and a web application that enables other researchers and the broader public to explore these effects without any or with little knowledge of corpus representation/exploration or statistical analyses.
description: 13 pages, 6 figures, 1 table, 3852 words