cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On Relativistic Generalization of Perelman's W-entropy and Statistical Thermodynamic Description of Gravitational Fields
Creators: name: Ruchin, Vyacheslav
name: Vacaru, Olivia
name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using double 2+2 and 3+1 nonholonomic fibrations on Lorentz manifolds, we extend the concept of W-entropy for gravitational fields in the general relativity, GR, theory. Such F- and W-functionals were introduced in the Ricci flow theory of three dimensional, 3-d, Riemannian metrics by G. Perelman, arXiv: math.DG/0211159. Nonrelativistic 3-d Ricci flows are characterized by associated statistical thermodynamical values determined by W--entropy. Generalizations for geometric flows of 4-d pseudo-Riemannian metrics are considered for models with local thermodynamical equilibrium and separation of dissipative and non-dissipative processes in relativistic hydrodynamics. The approach is elaborated in the framework of classical filed theories (relativistic continuum and hydrodynamic models) without an underlying kinetic description which will be elaborated in other works. The 3+1 splitting allows us to provide a general relativistic definition of gravitational entropy in the Lyapunov-Perelman sense. It increases monotonically as structure forms in the Universe. We can formulate a thermodynamic description of exact solutions in GR depending, in general, on all spacetime coordinates. A corresponding 2+2 splitting with nonholonomic deformation of linear connection and frame structures is necessary for generating in very general form various classes of exact solutions of the Einstein and general relativistic geometric flow equations. Finally, we speculate on physical macrostates and microstate interpretations of the W-entropy in GR, geometric flow theories and possible connections to string theory (a second unsolved problem also contained in Perelman's works) in the Polyakov's approach.
description: latex2e, v4 is an accepted to EPJC substantial extension of a former letter type paper on 10 pages to a research article on 41 pages; a new author added, the paper's title and permanent and visiting affiliations were correspondingly modified; and new results, conclusions and references are provided
Influence of Ohmic Contacts on the Amplitude of Shubnikow-de Haas Oscillations
Creators: name: Klitzing, Klaus von
name: Nieder, J.
name: Haug, R.
name: Müller, G.
name: Koch, S.
name: Weiss, Dieter
name: Ploog, K.
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik
subject: 72.20.My
subject: 73.40.Kp

description: The longitudinal magnetoresistance of a two- dimensional electron gas is shown to be strongly dependent on the presence of ohmic contacts between the voltage probes. By connecting or disconnecting contacts with additional gates across the potential probes it is possible to drastically change the amplitude of Shubnikov-de Haas oscillations.
Franz Lüttgen, Johann Gregor Breuer und Adolph Kolping
Creators: name: Weiß, Otto
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Christoph Kösters, Katholische Verbände und moderne Gesellschaft
Creators: name: Burkard, Dominik
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Norbert Busch, Katholische Frömmigkeit und Moderne
Creators: name: Weiß, Otto
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Electron Pinball and Commensurate Orbits in a Periodic Array of Scatters
Creators: name: Weiss, Dieter
name: Roukes, M.
name: Menschig, A.
name: Grambow, P.
name: Klitzing, Klaus von
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 530 Physik
subject: 73.50.Dn
subject: 72.10.Fk

description: We have introduced an artificial array of scatterers into a macroscopic two- dimensional conductor nearly devoid of intrinsic defects. This generates pronounced structure in the magnetoresistance, anomalous low-field Hall plateaus, and a quenching of the Hall effect about B=0. Our calculations show that the predominant features in the data arise from commensurate classical orbits impaled upon small groups of the imposed scatterers.
Thomas Groll, Das neue Augsburger Domkapitel
Creators: name: Weiß, Otto
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Fabrication and Characterization of Deep Mesa Echted "Anti"-dot Superlattices in GaAs-AlGaAs Heterostructures
Creators: name: Weiss, Dieter
name: Grambow, P.
name: Klitzing, Klaus von
name: Menschig, A.
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 530 Physik
subject: 73.21.-b
subject: 73.50.Jt
subject: 73.61.Ey

description: By etching a periodic array of holes through a ;mobility two-dimensional electron gas we define high-a lateral, ``anti\'\'-dot-type superlattice with periods a=200 and a=300 nm, much smaller than the electron mean free path in the unpatterned material. The devices are fabricated using electron beam lithography and reactive ion etching techniques, and characterized by magnetotransport experiments. Commensurability effects and the observed quenching of the Hall effect indicate that the electron gas between the etched holes essentially maintains its initial high electron mobility. Applied Physics Letters is copyrighted by The American Institute of Physics.
Labeled Random Finite Sets and the Bayes Multi-Target Tracking Filter
Creators: name: Vo, B. -N.
name: Vo, B. -T.
name: Phung, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: We present an efficient numerical implementation of the $δ$-Generalized Labeled Multi-Bernoulli multi-target tracking filter. Each iteration of this filter involves an update operation and a prediction operation, both of which result in weighted sums of multi-target exponentials with intractably large number of terms. To truncate these sums, the ranked assignment and K-th shortest path algorithms are used in the update and prediction, respectively, to determine the most significant terms without exhaustively computing all of the terms. In addition, using tools derived from the same framework, such as probability hypothesis density filtering, we present inexpensive look-ahead strategies to reduce the number of computations. Characterization of the $L_{1}$-error in the multi-target density arising from the truncation is presented.
Geschichte des kirchlichen Lebens in den deutschsprachigen Ländern seit dem Ende des 18. Jahrhunderts, Bd. V, hg. v. Erwin Gatz
Creators: name: Eder, Manfred
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Geschichte des kirchlichen Lebens in den deutschsprachigen Ländern seit dem Ende des 18. Jahrhunderts, Bd. IV, hg. v. Erwin Gatz
Creators: name: Garhammer, Erich
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
MINTAQANING MOLIYAVIY POTENTSIALINI BAHOLASHNING TARKIBIY MODELI
Creators: name: Yusupov, Fayzulla
Publisher: name: Zenodo
Year: 2023

description: Mintaqaviy xususiyatlarni hisobga olgan holda kompleks moliyviy baholashni shakllantirish, mintaqa  moliyasini tashkiliy tuzilmasini shakllantirish, klasterlarni shakllantirish yo'lidagi to'siqlarni aniqlash, hududning iqtisodiy va moliyaviy siyosatini takomillashtirish bo'yicha tavsiyalar  mintaqaning moliyaviy salohiyatini tarkibiy modelini ishlab chiqish imkonini beradi.
Desenzano (BS), Villa romana: storytelling e campagna fotografica (e-archeo project)
Creators: name: Marinello, Alessandra
Publisher: name: Zenodo
Year: 2022
Subjects: storytelling; roman archaeology; Villa romana Desenzano; late antiquity; virtual archaeology;

description: Nell'ambito del progetto e-Archeo, coordinato dalla società ALES e avente come obiettivo la valorizzazione di diversi siti archeologici italiani, l'Università di Verona si è occupata dello studio della Villa Romana di Desenzano e del sito "Grotte di Catullo" di Sirmione, con la guida della prof.ssa Patrizia Basso. Sono state svolte ricerche bibliografiche con l'obiettivo di scrivere una narrazione che accompagnasse la visita virtuale ai due siti. La villa romana di Desenzano (BS), nota per i suoi preziosi mosaici di IV secolo d.C., è l'edificio residenziale meglio conosciuto e conservato dell'Italia settentrionale. Su indicazione del CNR-ISPC, una prima fase ha visto la risposta ad un questionario comprendente diverse domande sui diversi aspetti del sito, da cui trarre le tematiche principali per lo sviluppo della narrazione. Infine, il tutto è stato condensato in un testo preliminare, focalizzato nella narrazione del settore di rappresentanza della villa, che ha rappresentato il punto di partenza per lo sviluppo della visita virtuale, realizzata nella seconda fase del progetto. A ciò si è accompagnata una campagna fotografica all'interno del sito archeologico e del piccolo antiquarium, suddivisa per ambienti.
 I dati caricati (testi, fotografie) è uno strumento utile allo studio del complesso monumentate, a partire dalla prima fase dell'edificio, nel I secolo a.C., fino al suo abbandono nel V secolo d.C.
Edge Channels and the Role of Contacts in the Quantum Hall Regime
Creators: name: Müller, G.
name: Weiss, Dieter
name: Koch, S.
name: Klitzing, Klaus von
name: Nickel, H.
name: Schlapp, W.
name: Lösch, R.
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 530 Physik
subject: 72.20.My
subject: 73.40.Cg
subject: 73.20.Dx

description: The vanishing voltage drop Uxx in the quantum Hall regime is destroyed if barriers with reduced filling factors are introduced between the potential probes. We investigated a system with two barriers created by Schottky gates that are separated by up to 200 ìm. Two metallic contacts could be electrically connected or disconnected to the system in the region between the barriers. The change from adiabatic to equilibrated transport demonstrates the importance of Ohmic contacts as energy and phase-randomizing reservoirs. The experiments show strong evidence for current- carrying edge states.
Magnetic Field Dependence of Gate Voltage and Current in a GaAs-Heterostructure in the Quantum Hall Regime
Creators: name: Weiss, Dieter
name: Mosser, V.
name: Gudmundsson, V.
name: Gerhardts, R.
name: Klitzing, Klaus von
Publisher: name: Universität Regensburg
Year: 1987
Subjects: subject: 530 Physik

description: The current flow at a fixed gate voltage and the floating gate voltage for fixed charge density in a gated GaAs heterostructure have been measured as a function of the magnetic field. The voltage oscillations which reflect the behaviour of the chemical potential have been clearly resolved. The experimental results are explained by a statistical model of inhomogeneities in the carrier concentration implying an effective density of states between the Landau levels.
Density of States in a Two-Dimensional Electron Gas in the Presence of a One-Dimensional Superlattice Potential
Creators: name: Weiss, Dieter
name: Zhang, C.
name: Gerhardts, R.
name: Klitzing, K.
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik

description: Magnetocapacitance measurements are performed on a holographically microstructured AlxGa1-xAs-GaAs heterostructure, in order to obtain direct information about the density of states of a periodically modulated two-dimensional electron gas. Comparison with microscopic calculations shows that the observed pronounced modulation of the magnetocapacitance oscillations has the same origin as the novel resistance oscillations recently reported for this system.
Johann Joachim Spalding, Religion, eine Angelegenheit des Menschen, hg. v. Wolfgang Erich Müller
Creators: name: Kustermann, Abraham Peter
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential
Creators: name: Weiss, Dieter
name: Klitzing, Klaus von
name: Ploog, K.
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: Condensed matter: electrical, magnetic and optical, Semiconductors
subject: 530 Physik
subject: 72.20.My

description: A new type of magnetoresistance oscillation periodic in 1/B is observed when the carrier density Ns of a two-dimensional electron gas is weakly modulated with a period smaller than the mean free path of the electrons. Experiments with high mobility AlGaAs-GaAs heterojunctions where Ns is modulated by holographic illumination at T ¡Ü 4.2 K show that the period of the additional quantum oscillation is determined by the separation a of the interference fringes. This period corresponds to Shubnikov-de Haas oscillations where only the electrons within the first reduced Brillouin zone with |k| $\lt$ ¦Ð/a contribute.
Karl Otmar von Aretin, Das Alte Reich, Bd. 1-3
Creators: name: Wolf, Hubert
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Magnetotransport and Cyclotron Resonance Investigations of the 2D-Electron Gas in e-Beam Irradiated AlGaAs/GaAs Heterojunctions
Creators: name: Sigg, H.
name: Weiss, Dieter
name: Klitzing, Klaus von
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 530 Physik

description: A 2D electron gas (2DEG) with a controlled density of repulsive scatters at the interface is obtained by irradiation of AlGaAs/GaAs heterojunctions with 1 MeV electrons. Measurements of the magnetotransport yield that the plateaus in the Hall resistance are at their quantized values Rxy = h/e2v (v is the integer filling factor) but show a significant broadening. The lineposition of the cyclotron resonance is found to be shifted to higher energies such that Full-size image with the energy before irradiation and . From the investigation on partially up to fully annealed samples we found that is proportional to nsc the density of scatters of the SDEG.
Nearly Kähler Geometry and $(2,3,5)$-Distributions via Projective Holonomy
Creators: name: Gover, Rod
name: Panai, Roberto
name: Willse, Travis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 53B10, 53A20, 53C29, 53C55, Secondary 53A30, 35Q76

description: We show that any dimension $6$ nearly Kähler (or nearly para-Kähler) geometry arises as a projective manifold equipped with a $\textrm{G}_2^{(*)}$ holonomy reduction. In the converse direction we show that if a projective manifold is equipped with a parallel $7$-dimensional cross product on its standard tractor bundle then the manifold is: a Riemannian nearly Kähler manifold, if the cross product is definite, otherwise, if the cross product has the other algebraic type, the manifold is in general stratified with nearly Kähler and nearly para-Kähler parts separated by a hypersurface which canonically carries a Cartan $(2,3,5)$-distribution. This hypersurface is a projective infinity for the pseudo-Riemannian geometry elsewhere on the manifold, and we establish how the Cartan distribution can be understood explicitly, and also in terms of conformal geometry, as a limit of the ambient nearly (para\nobreakdash-)Kähler structures. Any real-analytic $(2,3,5)$-distribution is seen to arise as such a limit, because we can solve the geometric Dirichlet problem of building a collar structure equipped with the required holonomy-reduced projective structure. A model geometry for these structures is provided by the projectivization of the imaginary (split) octonions. Our approach is to use Cartan/tractor theory to provide a curved version of this geometry, this encodes a curved version of the algebra of imaginary (split) octonions as a flat structure over its projectivization. The perspective is used to establish detailed results concerning the projective compactification of nearly (para\nobreakdash-)Kähler manifolds, including how the almost (para\nobreakdash-)complex structure and metric smoothly degenerate along the singular hypersurface to give the distribution there.
description: 48 pages. Theorem 1.2 corrected and simplified. Outlook section and four of six appendices removed. Minor formatting and expository changes made
Eugen Paul, Geschichte der christlichen Erziehung Bd. 2
Creators: name: Garhammer, Erich
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Novel Magnetoresistance Oscillations in a Periodically Modulated Two-Dimensional Electron Gas
Creators: name: Gerhardts, R.
name: Weiss, Dieter
name: Klitzing, Klaus von
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik
subject: 73.50.Jt
subject: 73.20.Dx
subject: 73.40.-c

description: A novel type of magnetoresistance oscillations is observed in high-mobility AlGaAs/GaAs heterojunctions with a holographically induced lateral periodic modulation in one direction. Theoretically, the effect is shown to result from an oscillatory dependence of the bandwidth of the modulation-broadened Landau levels of the two-dimensional electron system on the band index, which leads in high-mobility samples to a strongly anisotropic oscillating contribution to the conductivity tensor. The oscillations, periodic in B-1, reflect the commensurability of cyclotron diameter at the Fermi energy and modulation period.
title: Spattered with Words: a stylistic toolkit accounting for the 'theatricality' behind the playwright/screenwriter's use of real and improvised language in creating drama texts.
Creators: name: Fitchett, Jonathan Neil
Publisher: name: University of Kent
Year: 2022

description: This thesis documents investigations into the success (or not) of real, spontaneous dialogue when applied to the creation of a script for dramatic performance. The accounting for such success delves into different theoretical frameworks: conversation theory, stylistics, Cognitive Poetics, narratology, and extended cognition. This is therefore an interdisciplinary perspective, with ideas emerging from the fields of psychology, philosophy, literary stylistics and linguistics; yet all applied within the context of drama and performance. As such, this thesis may be seen as a playwright's 'toolbox' where the different views, as they necessarily overlap, can be seen as elements, which, when taken together, account for (and help in) the decisions an author may make in creating a text out of improvised speech. The investigation is also a search for the notion of 'theatricality' in the context of authentic speech and uses various forms of theatrical performance as examples, ranging from amateur improvisation to TV and film productions, Commedia dell'Arte to modern, immersive theatre. Finally, application of the theoretical frameworks is made to a current theatre project, The Plant.
Density of States of GaAs-AlGaAs Heterostructures Deduced from Temperature Dependend Magnetocapacitance Measurements
Creators: name: Mosser, V.
name: Weiss, Dieter
name: Klitzing, Klaus von
name: Ploog, K.
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: 530 Physik

description: Abstract We have analyzed the density of states of a two dimensional electron gas in a GaAs- AlGaAs hetereostructure by measuring the magnetocapacitance in magnetic fields up to 6 Tesla at temperatures below 10 K. The experimental data are well described by a Gaussian-like density of states where the linewidth Ã is proportional to B.
CoBiol@School _ CoBiol Class
Creators: name: Marrakchi, Fatma
Publisher: name: Zenodo
Year: 2023
Subjects: cobiol
kids' book
crab
food waste
science
shellfish
biofuels
marie curie
class

description: CoBiol is an academic research project. The project focuses on the profitable management of carbonated food wastes (also called biomass) with the added potential of producing competitive biofuels for petroleum oil with low production costs and zero carbon footprint, leading the transition to a sustainable and green transportation sector. CoBiol@School is a book that can be used as CoBiol Class for elementary schools to pupils 8-13 years old. It contains five-activity learning sessions to put research into practice with the aim to improve two-way knowledge transfer between research institutes and schools.
 In Activity One (Let Us Dialogue About CoBiol: The Soul of CoBiol), you find the answer to the question “What is CoBiol?”
 Activity Two (Let Us Read the CoBiol Story: Find Your Radiance!) answers the questions “How did CoBiol come about?” “What’s the problem that CoBiol is trying to solve?”
 Activity Three (Let Us Puzzle Out CoBiol Together: CoCreate) presents the cocreation of three consecutive games called Search, Puzzle, and Discover.
 Activity Four (CoBiol Epilogue: The NextGen Heroes!) is a poem with an enthusiastic message that you will recite and act out.
 Activity Five (Tour the Lab) involves visiting virtually the Advanced Biofuel Laboratory in AAU ENergy, Aalborg University, which is composed of the Bio Fuel Production and Test Lab. Do not miss CoBiol@School!
 Let us get ready for CoBiol Class!.
All-Electrical Detection of the Relative Strength of Rashba and Dresselhaus Spin-Orbit Interaction in Quantum Wires
Creators: name: Scheid, Matthias
name: Kohda, Makoto
name: Kunihashi, Yoji
name: Richter, Klaus
name: Nitta, Junsaku
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: 530 Physik
subject: 71.70.Ej
subject: 73.20.Fz
subject: 73.63.Nm

description: We propose a method to determine the relative strength of Rashba and Dresselhaus spin-orbit interaction from transport measurements without the need of fitting parameters. To this end, we make use of the conductance anisotropy in narrow quantum wires with respect to the directions of an in-plane magnetic field, the quantum wire, and the crystal orientation. We support our proposal by numerical calculations of the conductance of quantum wires based on the Landauer formalism which show the applicability of the method to a wide range of parameters.
Supplementary document for Experiment-based model of Er/Yb gain medium for fiber amplifiers and lasers - 6458798.pdf
Creators: name: Vysokikh, Dmitry
name: Bazakutsa, Alexey
name: Dorofeenko, Alexander
name: Butov, Oleg
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Material
Density of states in a two-dimensional electron gas in a strong magnetic field
Creators: name: Stahl, E.
name: Weiss, Dieter
name: Weinmann, G.
name: Klitzing, Klaus von
name: Ploog, K.
Publisher: name: Universität Regensburg
Year: 1985
Subjects: subject: 530 Physik
subject: 73.21.-b
subject: 71.70.Di
subject: 73.40.Kp

description: The authors have measured the density of states in the tails of the Landau levels of GaAs-AlxGa1-xAs heterostructures by analysing the variation of the Fermi level position as a function of the magnetic field. The experimental data are best described by a gaussian-like density of states superimposed on a constant background density of states.
description: Letter
Hyperbolic and non-hyperbolic chaos in a pair of coupled alternately excited FitzHugh-Nagumo systems
Creators: name: Jalnine, Alexey Yu.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 37D05, 37D45

description: We investigate a possibility of realization of structurally stable chaotic dynamics in neural systems. The considered model of interacting neurons consists of a pair of coupled FitzHugh-Nagumo systems, with the parameters being periodically modulated in antiphase, so that the neurons undergo alternate excitation with a successive transmission of the phase of oscillations from one neuron to another. It is shown that 4D map arising in a stroboscopic Poincare section of the model flow system possesses a hyperbolic strange attractor of the Smale-Williams type. The dynamical regime observed in the system represents a sequence of amplitude bursts, in which the phase dynamics of oscillatory spikes is described by chaotic mapping of Bernoulli type. The results are confirmed by numerical calculation of Lyapunov exponents and their parameter dependencies, as well as by direct computation of the distributions of angles between stable and unstable tangent subspaces of chaotic trajectories.
description: 5 pages, 6 figures
Mager, Inge, Die Konkordienformel im Fürstentum Braunschweig-Wolfenbüttel
Creators: name: Köpf, Ulrich
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Sabrina M. Seidler, II teatro del mondo
Creators: name: Feldkamp, Michael F.
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Evolutionary network games: equilibria from imitation and best-response dynamics
Creators: name: Cimini, Giulio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We consider games of strategic substitutes and strategic complements on networks. We introduce two different evolutionary dynamics in order to refine their multiplicity of equilibria, and we analyse the system through a mean field approach. We find that for the best-shot game, taken as a model for substitutes, a replicator-like dynamics does not lead to Nash equilibria, whereas it leads to unique equilibria (full cooperation or full defection, depending on the initial condition and the game parameter) for complements, represented by a coordination game. On the other hand, when the dynamics becomes more cognitively demanding in the form of a best response evolution, predictions are always Nash equilibria (at least when individuals are fully rational): For the best-shot game we find equilibria with a definite value of the fraction of contributors, whereas for the coordination game symmetric equilibria arise only for low or high initial fractions of cooperators. We also extend our study by considering complex heterogeneous topologies, and show that the nature of the selected equilibria does not change for the best-shot game. However for coordination games we reveal an important difference, namely that on infinitely large scale-free networks cooperation arises for any value of the incentive to cooperate.
Beating of Friedel oscillations induced by spin-orbit interaction
Creators: name: Badalyan, Samvel M.
name: Matos-Abiague, Alex
name: Vignale, Giovanni
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2010
Subjects: subject: 530 Physik
subject: 71.45.Gm, 72.25.Dc, 73.21.Fg, 73.63.Hs

description: By exploiting our recently derived exact formula for the Lindhard polarization function in the presence of Bychkov-Rashba (BR) and Dresselhaus (D) spin-orbit interaction (SOI), we show that the interplay of different SOI mechanisms induces highly anisotropic modifications of the static dielectric function. We find that under certain circumstances the polarization function exhibits doubly singular behavior. It leads to an intriguing phenomenon, beating of Friedel oscillations, which can be controlled by external fields. This effect is a general feature of systems with BR+D SOI and should be observed in structures with a sufficiently strong SOI.
Induction of the Lorentz-violating effective actions in quantum electrodynamics
Creators: name: Anacleto, M. A.
name: Brito, F. A.
name: Holanda, O.
name: Passos, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a Lorentz-symmetry violating extended quantum electrodynamics (QED) which preserves gauge symmetry. The extended fermionic sector can radiatively induce an extended effective action which simultaneously displays the same electromagnetic terms present in the Carroll-Field-Jackiw, Myers-Pospelov and Aether actions.
description: 9 pages, no figures, Latex. Version published in IJMPA. Title changed and one author added
Semiclassical theory for decay and fragmentation processes in chaotic quantum systems
Creators: name: Gutiérrez, Martha
name: Waltner, Daniel
name: Kuipers, Jack
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 530 Physik
subject: 05.45.Mt, 05.45.Pq, 03.65.Sq

description: We consider quantum decay and photofragmentation processes in open chaotic systems in the semiclassical limit. We devise a semiclassical approach which allows us to consistently calculate quantum corrections to the classical decay to high order in an expansion in the inverse Heisenberg time. We present results for systems with and without time reversal symmetry and also for the symplectic case, as well as extending recent results to non-localized initial states. We further analyze related photodissociation and photoionization phenomena and semiclassically compute cross-section correlations, including their Ehrenfest time dependence.
Quantum transport in ferromagnetic permalloy nanostructures
Creators: name: Neumaier, Daniel
name: Vogl, Anton
name: Eroms, Jonathan
name: Weiss, Dieter
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: 530 Physik

description: We studied phase-coherent phenomena in mesoscopic permalloy (Ni81Fe19) samples by exploring low-temperature transport. Both differential conductance as a function of bias voltage and magnetoconductance of individual wires display conductance fluctuations. Analysis of these fluctuations yields a phase coherence length of ${\approx}$250 nm at 25 mK as well as a 1/sqrt(T) temperature dependence. To suppress conductance fluctuations by ensemble averaging, we investigated low-temperature transport in wire arrays and extended permalloy films. In these samples we have measured conductance corrections which stem from electron-electron interaction; but attempts to detect signatures of weak localization were without success.
The semiclassical continuity equation for open chaotic systems
Creators: name: Kuipers, Jack
name: Waltner, Daniel
name: Gutiérrez, Martha
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 530 Physik
subject: 03.65.Sq, 05.45.Mt

description: We consider the continuity equation for open chaotic quantum systems in the semiclassical limit. First we explicitly calculate a semiclassical expansion for the probability current density using an expression based on classical trajectories. The current density is related to the survival probability via the continuity equation, and we show that this relation is satisfied within the semiclassical approximation to all orders. For this we develop recursion relation arguments which connect the trajectory structures involved for the survival probability, which travel from one point in the bulk to another, to those structures involved for the current density, which travel from the bulk to the lead. The current density can also be linked, via another continuity equation, to a correlation function of the scattering matrix whose semiclassical approximation is expressed in terms of trajectories that start and end in the lead. We also show that this continuity equation holds to all orders.
MINTAQANING BYUDJET SALOHIYATI
Creators: name: Yusupov, Fayzulla
Publisher: name: Zenodo
Year: 2023

description: Mintaqaning moliyaviy salohiyati (MMS) tarkibi uning tarkibiy potentsiallari bilan belgilanadi.  Bu ichki omillar: Mintaqa byudjet salohiyati (MBS), moliya-kredit tizimining mablag'lari (MKTB), mintaqada ro'yxatdan o'tgan xo'jalik yurituvchi subyektlarning moliyaviy imkoniyatlari, aholining moliyaviy resurslari (AMR) va tashqi investitsiyalar va qarzlar (TIva Q) tashkil qildi.
Nuntiaturberichte aus Deutschland nebst ergänzenden Aktenstücken. Die Kölner Nuntiatur Bd. V/1
Creators: name: Schröcker, Alfred
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Symmetry Classes in Graphene Quantum Dots: Universal Spectral Statistics, Weak Localization, and Conductance Fluctuations
Creators: name: Wurm, Jürgen
name: Rycerz, Adam
name: Adagideli, İnanç
name: Wimmer, Michael
name: Richter, Klaus
name: Baranger, Harold U.
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 530 Physik

description: We study the symmetry classes of graphene quantum dots, both open and closed, through the conductance and energy level statistics. For abrupt termination of the lattice, these properties are well described by the standard orthogonal and unitary ensembles. However, for smooth mass confinement, special time-reversal symmetries associated with the sublattice and valley degrees of freedom are critical: they lead to block diagonal Hamiltonians and scattering matrices with blocks belonging to the unitary symmetry class even at zero magnetic field. While the effect of this structure is clearly seen in the conductance of open dots, it is suppressed in the spectral statistics of closed dots, because the intervalley scattering time is shorter than the time required to resolve a level spacing in the closed systems but longer than the escape time of the open systems.
Time-dependent Hierarchical Dirichlet Model for Timeline Generation
Creators: name: Li, Rumeng
name: Wang, Tao
name: Wang, Xun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Timeline Generation aims at summarizing news from different epochs and telling readers how an event evolves. It is a new challenge that combines salience ranking with novelty detection. For long-term public events, the main topic usually includes various aspects across different epochs and each aspect has its own evolving pattern. Existing approaches neglect such hierarchical topic structure involved in the news corpus in timeline generation. In this paper, we develop a novel time-dependent Hierarchical Dirichlet Model (HDM) for timeline generation. Our model can aptly detect different levels of topic information across corpus and such structure is further used for sentence selection. Based on the topic mined fro HDM, sentences are selected by considering different aspects such as relevance, coherence and coverage. We develop experimental systems to evaluate 8 long-term events that public concern. Performance comparison between different systems demonstrates the effectiveness of our model in terms of ROUGE metrics.
Self-sustained Magnetoelectric Oscillations in Magnetic Resonant Tunneling Structures
Creators: name: Ertler, Christian
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: 530 Physik

description: The dynamic interplay of transport, electrostatic, and magnetic effects in the resonant tunneling through ferromagnetic quantum wells is theoretically investigated. It is shown that the carrier-mediated magnetic order in the ferromagnetic region not only induces, but also takes part in intrinsic, robust, and sustainable high-frequency current oscillations over a large window of nominally steady bias voltages. This phenomenon could spawn a new class of quantum electronic devices based on ferromagnetic semiconductors.
Eike Wolgast, Hochstift und Reformation
Creators: name: Feldkamp, Michael F.
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Stacks of uniform cyclic covers of curves and their Picard groups
Creators: name: Poma, Flavia
name: Talpo, Mattia
name: Tonini, Fabio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D23, 14C22, 14H52

description: We study the stack B_{h,g,n} of uniform cyclic covers of degree n between smooth curves of genus h and g and, for h >> g, present it as an open substack of a vector bundle over the universal Jacobian stack of M_g. We use this description to compute the integral Picard group of B_{h,g,n}, showing that it is generated by tautological classes of B_{h,g,n}.
description: v3: (long overdue) final version
Hasse, Hans-Peter, Karlstadt und Tauler
Creators: name: Köpf, Ulrich
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Electronic and optical properties of ferromagnetic GaMnAs in a multiband tight-binding approach
Creators: name: Turek, Marko
name: Siewert, Jens
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: 530 Physik

description: We consider the electronic properties of ferromagnetic bulk GaMnAs at zero temperature using two realistic tight-binding models, one due to Tang and Flatte and one due to Masek. In particular, we study the density of states, the Fermi energy, the inverse participation ratio, and the optical conductivity with varying impurity concentration x=0.01-0.15. The results are very sensitive to the assumptions made for the on-site and hopping matrix elements of the Mn impurities. For low concentrations, x<0.02, Masek's model shows only small deviations from the case of p-doped GaAs with increased number of holes while within Tang and Flatte's model an impurity-band forms. For higher concentrations x, Masek's model shows minor quantitative changes in the properties we studied while the results of the Tang and Flatte model exhibit qualitative changes including strong localization of eigenstates with energies close to the band edge. These differences between the two approaches are in particular visible in the optical conductivity, where Masek's model shows a Drude peak at zero frequency while no such peak is observed in Tang and Flatte's model. Interestingly, although the two models differ qualitatively the calculated effective optical masses of both models are similar within the range of 0.4-1.0 of the free electron mass.
Beat Hodler, Das »Ärgernis« der Reformation
Creators: name: Holtz, Sabine
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Handbook of European History, 1400-1600, hg. v. Thomas A. Brady Jr
Creators: name: Dobras, Wolfgang
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Shearer's point process, the hard-sphere model and a continuum Lovász Local Lemma
Creators: name: Hofer-Temmel, Christoph
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G55 (60G60 82B05 05C69)

description: A point process is R-dependent, if it behaves independently beyond the minimum distance R. This work investigates uniform positive lower bounds on the avoidance functions of R-dependent simple point processes with a common intensity. Intensities with such bounds are described by the existence of Shearer's point process, the unique R-dependent and R-hard-core point process with a given intensity. This work also presents several extensions of the Lovász Local Lemma, a sufficient condition on the intensity and R to guarantee the existence of Shearer's point process and exponential lower bounds. Shearer's point process shares combinatorial structure with the hard-sphere model with radius R, the unique R-hard-core Markov point process. Bounds from the Lovász Local Lemma convert into lower bounds on the radius of convergence of a high-temperature cluster expansion of the hard-sphere model. This recovers a classic result of Ruelle on the uniqueness of the Gibbs measure of the hard-sphere model via an inductive approach à la Dobrushin.
Christine Ruhrherg, Der literarische Körper der Heiligen
Creators: name: Feistner, Edith
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
Impact of atmospheric refraction: How deeply can we probe exo-Earth's atmospheres during primary eclipse observations?
Creators: name: Betremieux, Y.
name: Kaltenegger, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Most models used to predict or fit exoplanet transmission spectra do not include all the effects of atmospheric refraction. Namely, the angular size of the star with respect to the planet can limit the lowest altitude, or highest density and pressure, probed during primary eclipses, as no rays passing below this critical altitude can reach the observer. We discuss this geometrical effect of refraction for all exoplanets, and tabulate the critical altitude, density and pressure for an exoplanet identical to Earth with a 1 bar N2/O2 atmosphere, as a function of both the incident stellar flux (Venus, Earth, and Mars-like) at the top of the atmosphere, and the spectral type (O5-M9) of the host star. We show that such a habitable exo-Earth can be probed to a surface pressure of 1 bar only around the coolest stars. We present 0.4-5.0 micron model transmission spectra of Earth's atmosphere viewed as a transiting exoplanet, and show how atmospheric refraction modifies the transmission spectrum depending on the spectral type of the host star. We demonstrate that refraction is another phenomenon that can potentially explain flat transmission spectra over some spectral regions.
description: 16 pages, 11 Figures, 2 Tables, Accepted for publication in ApJ
СОҲИБҚИРОН АМИР ТЕМУР ДАВРИДА ИЛМ-ФАНГА БЎЛГАН МУНОСАБАТ
Creators: name: Турдимирзаев, Элёрбек
Publisher: name: Zenodo
Year: 2023

description: Ушбу мақолада Амир Темурнинг илм-фанга бўлган муносабати хусусан, унинг дин ва тарих илмлари ривожига қўшган хиссаси, унинг олимлар билан ўтказган мунозара ва суҳбатлари, Амир Темурнинг тарих илмига бўлган қарашлари очиб берилган.
On galaxy rotation curves from a continuum mechanics approach to modified gravity
Creators: name: Boehmer, Christian G.
name: Tamanini, Nicola
name: Wright, Matthew
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a modification of General Relativity motivated by the treatment of anisotropies in Continuum Mechanics. The Newtonian limit of the theory is formulated and applied to galactic rotation curves. By assuming that the additional structure of spacetime behaves like a Newtonian gravitational potential for small deviations from isotropy, we are able to recover the Navarro-Frenk-White profile of dark matter halos by a suitable identification of constants. We consider the Burkert profile in the context of our model and also discuss rotation curves more generally.
description: 8 pages; v2 11 pages, heavily revised version, new title; v3 13 pages final version
Optimal block-tridiagonalization of matrices for coherent charge transport
Creators: name: Wimmer, Michael
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: Coherent quantum transport; Recursive Green’s function algorithm; Block-tridiagonal matrices; Matrix reordering; Graph theory
subject: 530 Physik
subject: 72.10.Bg; 02.70.−c; 02.10.Ox

description: Numerical quantum transport calculations are commonly based on a tight-binding formulation. A wide class of quantum transport algorithms requires the tight-binding Hamiltonian to be in the form of a block-tridiagonal matrix. Here, we develop a matrix reordering algorithm based on graph partitioning techniques that yields the optimal block-tridiagonal form for quantum transport. The reordered Hamiltonian can lead to significant performance gains in transport calculations, and allows to apply conventional two-terminal algorithms to arbitrary complex geometries, including multi-terminal structures. The block-tridiagonalization algorithm can thus be the foundation for a generic quantum transport code, applicable to arbitrary tight-binding systems. We demonstrate the power of this approach by applying the block-tridiagonalization algorithm together with the recursive Green\'s function algorithm to various examples of mesoscopic transport in two-dimensional electron gases in semiconductors and graphene.
Madeleine Boxler, »Ich bin ein predigerin und appostlorin«
Creators: name: Feistner, Edith
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 17 (1998): Rottenburger Jahrbuch für Kirchengeschichte, Band 17
An implicit wetting and drying approach for non-hydrostatic baroclinic flows in high aspect ratio domains
Creators: name: Candy, Adam S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 86A10 (Primary) 76D05, 35Q30 (Secondary)

description: A new approach to modelling free surface flows is developed that enables, for the first time, 3D consistent non-hydrostatic baroclinic physics that wets and dries in the large aspect ratio spatial domains that characterise geophysical systems. This is key in the integration of physical models to permit seamless simulation in a single consistent arbitrarily unstructured multiscale and multi-physics dynamical model. A high order continuum representation is achieved through a general Galerkin finite element formulation that guarantees local and global mass conservation, and consistent tracer advection. A flexible spatial discretisation permits conforming domain bounds and a variable spatial resolution, whilst atypical use of fully implicit time integration ensures computational efficiency. Notably this brings the natural inclusion of non-hydrostatic baroclinic physics and a consideration of vertical inertia to flood modelling in the full 3D domain. This has application in improving modelling of inundation processes in geophysical domains, where dynamics proceeds over a large range of horizontal extents relative to vertical resolution, such as in the evolution of a tsunami, or in urban environments containing complex geometric structures at a range of scales.
description: 20 pages, 14 figures, 1 table