cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relating jet structure to photometric variability: the Herbig Ae star HD 163296
Creators: name: Ellerbroek, L. E.
name: Podio, L.
name: Dougados, C.
name: Cabrit, S.
name: Sitko, M. L.
name: Sana, H.
name: Kaper, L.
name: de Koter, A.
name: Klaassen, P. D.
name: Mulders, G. D.
name: Mendigutia, I.
name: Grady, C. A.
name: Grankin, K.
name: van Winckel, H.
name: Bacciotti, F.
name: Russell, R. W.
name: Lynch, D. K.
name: Hammel, H. B.
name: Beerman, L. C.
name: Day, A. N.
name: Huelsman, D. M.
name: Werren, C.
name: Henden, A.
name: Grindlay, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Herbig Ae/Be stars are intermediate-mass pre-main sequence stars surrounded by circumstellar dust disks. Some are observed to produce jets, whose appearance as a sequence of shock fronts (knots) suggests a past episodic outflow variability. This "jet fossil record" can be used to reconstruct the outflow history. We present the first optical to near-infrared (NIR) VLT/X-shooter spectra of the jet from the Herbig Ae star HD 163296. We determine physical conditions in the knots, as well as their kinematic "launch epochs". Knots are formed simultaneously on either side of the disk, with a regular interval of ~16 yr. The velocity dispersion versus jet velocity and the energy input are comparable in both lobes. However, the mass loss rate, velocity, and shock conditions are asymmetric. We find Mjet/Macc ~ 0.01-0.1, consistent with magneto-centrifugal jet launching models. No evidence for dust is found in the high-velocity jet, suggesting it is launched within the sublimation radius (<0.5 au). The jet inclination measured from proper motions and radial velocities confirms it is perpendicular to the disk. A tentative relation is found between the structure of the jet and the photometric variability of the source. Episodes of NIR brightening were previously detected and attributed to a dusty disk wind. We report for the first time significant optical fadings lasting from a few days up to a year, coinciding with the NIR brightenings. These are likely caused by dust lifted high above the disk plane; this supports the disk wind scenario. The disk wind is launched at a larger radius than the high-velocity atomic jet, although their outflow variability may have a common origin. No significant relation between outflow and accretion variability could be established. Our findings confirm that this source undergoes periodic ejection events, which may be coupled with dust ejections above the disk plane.
description: 20 pages, 11 figures, accepted for publication in Astronomy & Astrophysics
Fritz Glauser, Das Schwesternhaus zu St. Anna im Bruch in Luzern 1498-1625
Creators: name: Degler-Spengler, Brigitte
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Baryon spectroscopy with spatially improved quark sources
Creators: name: Burch, Tommy
name: Gattringer, Christof
name: Glozman, Leonid Ya.
name: Hagen, Christian
name: Hierl, Dieter
name: Lang, C. B.
name: Schäfer, Andreas
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We study baryons on the lattice with a special focus on excited states. For that purpose we construct several interpolators which differ in their Dirac structure. These interpolators are built from Jacobi smeared quarks with different widths in order to allow for operators with improved spatial wavefunctions. We compute all cross correlations and use the variational method to determine which combinations of operators have best overlap with ground and excited states. Our approach yields promising results for the spin-1/2 baryons: nucleon, sigma, xi and lambda. For the spin-3/2 baryons, delta and omega, we obtain results which are consistent with results of other groups.
Excited meson spectroscopy with chirally improved fermions
Creators: name: Burch, Tommy
name: Gattringer, Christof
name: Glozman, Leonid Ya.
name: Hagen, Christian
name: Hierl, Dieter
name: Lang, C. B.
name: Schäfer, Andreas
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We present excited meson masses from quenched calculations using chirally improved (CI) quarks at pion masses down to 350 MeV. The salient features of our analysis are the use of a matrix of correlators from various source and sink operators and a basis which includes quark sources with different spatial widths, thereby improving overlap with states exhibiting radial excitations.
Low-Mass X-ray Binaries and Globular Clusters Streamers and Arcs in NGC4278
Creators: name: D'Abrusco, R.
name: Fabbiano, G.
name: Brassington, N. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report significant inhomogeneities in the projected two-dimensional (2D) spatial distributions of Low-Mass X-ray Binaries (LMXBs) and Globular Clusters (GCs) of the intermediate mass elliptical galaxy NGC4278. In the inner region of NGC4278, a significant arc-like excess of LMXBs extending south of the center at ~50" in the western side of the galaxy can be associated to a similar over-density of the spatial distribution of red GCs from~Brassington et al. (2009). Using a recent catalog of GCs produced by Usher et al.(2013) and covering the whole field of the NGC4278 galaxy, we have discovered two other significant density structures outside the D25 isophote to the W and E of the center of NGC4278, associated to an over-density and an under-density respectively. We discuss the nature of these structures in the context of the similar spatial inhomogeneities discovered in the LMXBs and GCs populations of NGC4649 and NGC4261, respectively. These features suggest streamers from disrupted and accreted dwarf companions.
description: 9 pages, 8 color figures, accepted for publication in ApJ
Learning theories reveal loss of pancreatic electrical connectivity in diabetes as an adaptive response
Creators: name: Goel, Pranay
name: Mehta, Anita
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Cells of almost all solid tissues are connected with gap junctions which permit the direct transfer of ions and small molecules, integral to regulating coordinated function in the tissue. The pancreatic islets of Langerhans are responsible for secreting the hormone insulin in response to glucose stimulation. Gap junctions are the only electrical contacts between the beta-cells in the tissue of these excitable islets. It is generally believed that they are responsible for synchrony of the membrane voltage oscillations among beta-cells, and thereby pulsatility of insulin secretion. Most attempts to understand connectivity in islets are often interpreted, bottom-up, in terms of measurements of gap junctional conductance. This does not, however explain systematic changes, such as a diminished junctional conductance in type 2 diabetes. We attempt to address this deficit via the model presented here, which is a learning theory of gap junctional adaptation derived with analogy to neural systems. Here, gap junctions are modelled as bonds in a beta-cell network, that are altered according to homeostatic rules of plasticity. Our analysis reveals that it is nearly impossible to view gap junctions as homogeneous across a tissue. A modified view that accommodates heterogeneity of junction strengths in the islet can explain why, for example, a loss of gap junction conductance in diabetes is necessary for an increase in plasma insulin levels following hyperglycemia.
description: 15 pages, 5 figures. To appear in PLoS One (2013)
The Exotic baryon Theta+(1540) on the lattice
Creators: name: Hagen, Christian
name: Hierl, Dieter
name: Schäfer, Andreas
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small quark masses. The results of our quenched calculations, which have been done on a 12^3x24 lattice with a lattice spacing of a=0.148 fm, do not provide any evidence for the existence of a Theta^+ with positive parity. We do observe, however, a signal compatible with nucleon-kaon scattering state. For the negative parity the results are inconclusive, due to the potential mixture with nucleon-kaon and N*-kaon scattering states.
Galactic and Cosmic Type Ia SN rates: is it possible to impose constraints on SNIa progenitors?
Creators: name: Bonaparte, I.
name: Matteucci, F.
name: Recchi, S.
name: Spitoni, E.
name: Pipino, A.
name: Grieco, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compute the Type Ia supernova rates in typical elliptical galaxies by varying the progenitor models for Type Ia supernovae. To do that a formalism which takes into account the delay distribution function (DTD) of the explosion times and a given star formation history is adopted. Then the chemical evolution for ellipticals with baryonic initial masses $10^{10}$, $10^{11}$ and $10^{12} M_{\odot}$ is computed, and the mass of Fe produced by each galaxy is precisely estimated. We also compute the expected Fe mass ejected by ellipticals in typical galaxy clusters (e.g. Coma and Virgo), under different assumptions about Type Ia SN progenitors. As a last step, we compute the cosmic Type Ia SN rate in an unitary volume of the Universe by adopting several cosmic star formation rates and compare it with the available and recent observational data. Unfortunately, no firm conclusions can be derived only from the cosmic SNIa rate, neither on SNIa progenitors nor on the cosmic star formation rate. Finally, by analysing all our results together, and by taking into account previous chemical evolution results, we try to constrain the best Type Ia progenitor model. We conclude that the best progenitor models for Type Ia SNe are still the single degenerate model, the double degenerate wide model, and the empirical bimodal model. All these models require the existence of prompt Type Ia supernovae, exploding in the first 100 Myr since the beginning of star formation, although their fraction should not exceed 15-20% in order to fit chemical abundances in galaxies.
description: 17 pages, 11 figures, Submitted to MNRAS
Contact dependence of carrier injection in carbon nanotubes: An ab initio study
Creators: name: Nemec, Norbert
name: Tomanek, David
name: Cuniberti, Gianaurelio
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We combine {\it ab initio} density functional theory with transport calculations to provide a microscopic basis for distinguishing between `good' and `poor' metal contacts to nanotubes. Comparing Ti and Pd as examples of different contact metals, we trace back the observed superiority of Pd to the nature of the metal-nanotube hybridization. Based on large scale Landauer transport calculations, we suggest that the `optimum' metal-nanotube contact combines a weak hybridization with a large contact length between the metal and the nanotube.
Laser-induced atomic adsorption: a mechanism for nanofilm formation
Creators: name: Martins, Weliton S.
name: de Silans, Thierry Passerat
name: Oriá, Marcos
name: Chevrollier, Martine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate and interpret a technique of laser-induced formation of thin metallic films using alkali atoms on the window of a dense-vapour cell. We show that this intriguing photo-stimulated process originates from the adsorption of Cs atoms via the neutralisation of Cs$^+$ ions by substrate electrons. The Cs$^+$ ions are produced via two-photon absorption by excited Cs atoms very close to the surface, which enables the transfer of the laser spatial intensity profile to the film thickness. An initial decrease of the surface work function is required to guarantee Cs$^+$ neutralisation and results in a threshold in the vapour density. This understanding of the film growth mechanism may facilitate the development of new techniques of laser-controlled lithography, starting from thermal vapours.
description: 5 pages, 4 figures. EPL, accepted for publication
Heinz Noflatscher, Glaube, Reich und Dynastie
Creators: name: Reinhardt, Rudolf
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Electron transport in carbon nanotube-metal systems: contact effects
Creators: name: Ranjan, N.
name: Gutiérrez, Rafael
name: Krompiewski, Stefan
name: Cuniberti, Gianaurelio
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: 530 Physik

description: Carbon nanotubes (CNT) have a very large application potential in the rapid developing field of molecular electronics. Infinite single-wall metallic CNTs have theoretically a conductance of 4e$^{2}$/h because of the two electronic bands crossing the Fermi level. For finite size CNTs experiments have shown that other values are also possible, indicating a very strong influence of the contacts. We study electron transport in single- and double-wall CNTs contacted to metallic electrodes within the Landauer formalism combined with Green function techniques. We show that the symmetry of the contact region may lead to blocking of a transport channel. In the case of double-wall CNTs with both inner and outer shells being metallic, non-diagonal self energy contributions from the electrodes may induce channel mixing, precluding a simple addition of the individual shell conductances.
Rudolf Fendler, Geschichte der Deutschordenskommende Einsiedel bei Lautern
Creators: name: Diefenbacher, Michael
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
The role of contacts in molecular electronics
Creators: name: Cuniberti, Gianaurelio
name: Großmann, Frank
name: Gutiérrez, Rafael
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: 530 Physik

description: Molecular electronic devices are the upmost destiny of the miniaturization trend of electronic components. Although not yet reproducible on large scale, molecular devices are since recently subject of intense studies both experimentally and theoretically, which agree in pointing out the extreme sensitivity of such devices on the nature and quality of the contacts. This chapter intends to provide a general theoretical framework for modelling electronic transport at the molecular scale by describing the implementation of a hybrid method based on Green function theory and density functional algorithms. In order to show the presence of contact-dependent features in the molecular conductance, we discuss three archetypal molecular devices, which are intended to focus on the importance of the different sub-parts of a molecular two-terminal setup.
Effect of the lead dimensionality over transport properties in quantum dots
Creators: name: Craco, Luis
name: Cuniberti, Gianaurelio
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: 530 Physik

description: We theoretically investigate the effect the lead dimensionality on the non-equilibrium electron transport through quantum dots. More precisely, we study nonlinear transport in a quantum dot coupled to leads of diverse dimensionality. We show that the presence of the latter strongly determines the resulting transport properties. Differently from higher dimensional leads (wide and smooth band limit), van Hove singularities in the density of states of low-dimensional reservoirs determine sharp resonances in the differential conductance at finite applied voltages as well as in the dot spectral density. It is also shown that, due to the finiteness of the terminal bandwidth, the differential conductance change its sign at higher biases. These results clearly indicate that the environment does play an important role in determining transport properties in mesoscopic systems.
Semiclassical description of shell effects in finite fermion systems
Creators: name: Brack, Matthias
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: A short survey of the semiclassical periodic orbit theory, initiated by M. Gutzwiller and generalized by many other authors, is given. Via so-called semiclassical trace formmulae, gross-shell effects in bound fermion systems can be interpreted in terms of a few periodic orbits of the corresponding classical systems. In integrable systems, these are usually the shortest members of the most degenerate families or orbits, but in some systems also less degenerate orbits can determine the gross-shell structure. Applications to nuclei, metal clusters, semiconductor nanostructures, and trapped dilute atom gases are discussed.
Stellar haloes outshine disc truncations in low-inclined spirals
Creators: name: Martín-Navarro, I.
name: Trujillo, I.
name: Knapen, J. H.
name: Bakos, J.
name: Fliri, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The absence of stellar disc truncations in low-inclined spiral galaxies has been a matter of debate in the last decade. Disc truncations are often observed in highly inclined galaxies but no obvious detection of this feature has so far been made in face-on spirals. Here we show, using a simple exponential disc plus stellar halo model based on current observational constraints, that truncations in face-on projections occur at surface brightness levels comparable to the brightness of stellar haloes at the same radial distance. In this sense, stellar haloes outshine the galaxy disc at the expected position of the truncations, forcing their studies only in highly inclined (edge-on) orientations.
description: 6 pages, 2 figures. Submitted to MNRAS. Comments are welcome
Ursula Riechert, Oberschwäbische Reichsklöster im Beziehungsgeflecht mit Königtum, Adel und Städten (12. bis 15. Jahrhundert)
Creators: name: Reden-Dohna, Armgard Von
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Werner Vogler (Hg.), Ulrich Rösch, St. Galler Fürstabt und Landesherr
Creators: name: Hummel, Heribert
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Faust, Ulrich (bearb.), Germania Benedictina
Creators: name: Reinhardt, Rudolf
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
The Needs and Challenges in Harmonizing Data and Information Quality Measures – Use Case of FAIRness Assessment
Creators: name: Peng, Ge
Publisher: name: Zenodo
Year: 2023
Subjects: FAIR Principles
Quality Measure
Harmonized
FAIRness
Data Quality

description: The growing global acceptance of FAIR Guiding Principles spurs diverse FAIRness indicator development to address organizational needs and challenges in demonstrating compliance with FAIR. This presentation explores the complexity of quality and introduces two approaches for harmonizing FAIRness assessments.
Isospin Breaking Effects in the 2-Flavor Schwinger Model
Creators: name: Chreim, Nuha
name: Hoelbling, Christian
name: Pielmeier, Niklas
name: Varnhorst, Lukas
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The automatic fine-tuning of isospin breaking effects by conformal coalescence found by Georgi in the 2-flavor Schwinger model is studied. The analytical results obtained for the bosonic correlators are elaborated and the mass splitting parameter in leading order determined. Numerical investigation of meson mass splitting confirms the exponential suppression of symmetry breaking effects even for mass differences $δm$ near the fermion mass $m_f$.
description: 7 pages. Proceedings of the 39th International Symposium on Lattice Field Theory, LATTICE2022 8th-13th August, 2022, University of Bonn, Germany. Matches PoS version
Basilius Steidle, Beiträge zum alten Mönchtum und zur Benediktusregel
Creators: name: Frank, Karl Suso
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Bruno Schwalbach, Erzbischof Conrad Gröber und die nationalsozialistische Diktatur
Creators: name: Köhler, Joachim
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Für den Frieden der Welt und die Einheit der Kirche
Creators: name: Merz, Hans-Georg
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Asymmetries in Coronal Spectral lines and Emission Measure Distribution
Creators: name: Tripathi, Durgesh
name: Klimchuk, James A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It has previously been argued that 1. spicules do not provide enough pre-heated plasma to fill the corona, and 2. even if they did, additional heating would be required to keep the plasma hot as it expands upward. We here address the question of whether spicules play an important role by injecting plasma at cooler temperatures ($< 2$ MK), which then gets heated to coronal values at higher altitudes. We measure red-blue asymmetries in line profiles formed over a wide range of temperatures in the bright moss areas of two active regions. We derive emission measure distributions from the excess wing emission. We find that the asymmetries and emission measures are small and conclude that spicules do not inject an important (dominant) mass flux into the cores of active regions at temperatures $> 0.6$ MK ($\log T > 5.8$). These conclusions apply not only to spicules, but to any process that suddenly heats and accelerates chromospheric plasma (e.g., a chromospheric nanoflare). The traditional picture of coronal heating and chromospheric evaporation appears to remain the most likely explanation of the active region corona.
description: 18 pages, 7 figures, Accepted for publication in ApJ
Arms Trades with Strings Attached
Creators: name: Oh, Eunice
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: 160607 International Relations
subject: FOS: Political science
subject: 160606 Government and Politics of Asia and the Pacific

description: While arms trades amongst states have been traditionally regarded as providing the supplier state with leverage over the recipient state, the introduction of new global arms exporters have questioned the applicability of this argument. This argument may stand for traditional arms exporters that have long dominated the export industry. However, this study argues that rising arms exporters like South Korea and Israel weigh in economic and strategic considerations more heavily than the sole pursuit of leverage. Utilizing both quantitative analyses and case studies on two countries rapidly expanding their share of the global arms export industry, this study sheds light onto how current and future arms exporters’ motivation encompasses multiple, not singular, considerations. This study was conducted with the hopes of raising awareness on the differing motivations reflecting the unique considerations of each country and finds commonalities among non-traditional arms exporters. A thorough understanding of each and every country’s decision to export arms is warranted to better inform and navigate the future of arms exports, in addition to the effects it has on bilateral and international relations.
Immediate brain plasticity after one hour of brain–computer interface (BCI)
Creators: name: Nierhaus, Till
name: Vidaurre, Carmen
name: Sannelli, Claudia
name: Müller, Klaus-Robert
name: Villringer, Arno
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 610 Medizin und Gesundheit
subject: brain computer interface
subject: BCI
subject: EEG
subject: fMRI
subject: functional connectivity
subject: machine learning
subject: brain plasticity

description: A brain‐computer‐interface (BCI) allows humans to control computational devices using only neural signals. However, it is still an open question, whether performing BCI also impacts on the brain itself, i.e. whether brain plasticity is induced. Here, we show rapid and spatially specific signs of brain plasticity measured with functional and structural MRI after only 1 h of purely mental BCI training in BCI‐naive subjects. We employed two BCI approaches with neurofeedback based on (i) modulations of EEG rhythms by motor imagery (MI‐BCI) or (ii) event‐related potentials elicited by visually targeting flashing letters (ERP‐BCI). Before and after the BCI session we performed structural and functional MRI. For both BCI approaches we found increased T1‐weighted MR signal in the grey matter of the respective target brain regions, such as occipital/parietal areas after ERP‐BCI and precuneus and sensorimotor regions after MI‐BCI. The latter also showed increased functional connectivity and higher task‐evoked BOLD activity in the same areas. Our results demonstrate for the first time that BCI by means of targeted neurofeedback rapidly impacts on MRI measures of brain structure and function. The spatial specificity of BCI‐induced brain plasticity promises therapeutic interventions tailored to individual functional deficits, for example in patients after stroke.
Kreutz, Benedikt: Militärseelsorge im Ersten Weltkrieg
Creators: name: Gritz, Martin
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
title: Real-Time Noninvasive Estimation of Intrapleural Pressure in Mechanically Ventilated Patients: a Feasibility Study
Creators: name: Albanese, Antonio
name: Karamolegkos, Nikolaos
name: Haider, Syed W.
name: Seiver, Adam
name: Chbat, Nicolas W.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Biomedical engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Artificial respiration

description: A method for real-time noninvasive estimation of intrapleural pressure in mechanically ventilated patients is proposed. The method employs a simple first-order lung mechanics model that is fitted in real-time to flow and pressure signals acquired non-invasively at the opening of the patient airways, in order to estimate lung resistance (RL), lung compliance (CL) and intrapleural pressure (Ppl) continuously in time. Estimation is achieved by minimizing the sum of squared residuals between measured and model predicted airway pressure using a modified Recursive Least Squares (RLS) approach. Particularly, two different RLS algorithms, namely the conventional RLS with Exponential Forgetting (EF-RLS) and the RLS with Vector-type Forgetting Factor (VFF-RLS), are considered in this study and their performances are first evaluated using simulated data. Simulations suggest that the conventional EFRLS algorithm is not suitable for our purposes, whereas the VFF-RLS method provides satisfactory results. The potential of the VFF-RLS based method is then proved on experimental data collected from a mechanically ventilated pig. Results show that the method provides continuous estimated lung resistance and compliance in normal physiological ranges and pleural pressure in good agreement with invasive esophageal pressure measurements.
HARPS spectropolarimetry of Herbig Ae/Be stars
Creators: name: Hubrig, S.
name: Ilyin, I.
name: Schoeller, M.
name: Curto, G. Lo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Our knowledge of the presence and the strength of magnetic fields in intermediate-mass pre-main-sequence stars remains very poor. We present new magnetic field measurements in six Herbig Ae/Be stars observed with HARPS in spectropolarimetric mode. We downloaded from the European Southern Observatory (ESO) archive the publically available HARPS spectra for six Herbig Ae/Be stars. Wavelength shifts between right- and left-hand side circularly polarised spectra were interpreted in terms of a longitudinal magnetic field , using the moment technique introduced by Mathys. The application of the moment technique to the HARPS spectra allowed us in addition to study the presence of the crossover effect and quadratic magnetic fields. Our search for longitudinal magnetic fields resulted in first detections of weak magnetic fields in the Herbig Ae/Be stars HD58647 and HD98922. Further, we confirm the previous tentative detection of a weak magnetic field in HD104237 by Donati et al. and confirm the previous detection of a magnetic field in the Herbig Ae star HD190073. Surprisingly, the measured longitudinal magnetic field of HD190073, =91+-18G at a significance level of 5sigma is not in agreement with the measurement results of Alecian et al. (2013), =-10+-20G, who applied the LSD method to exactly the same data. No crossover effect was detected for any star in the sample. Only for HD98922 the crossover effect was found to be close to 3sigma with a measured value of -4228+-1443 km/s G. A quadratic magnetic field of the order of 10kG was detected in HD98922, and of ~3.5kG in HD104237.
description: Eight pages, seven figures, three tables, accepted for publication in AN
Paul M. Baumgarten, Die römische Kurie um 1800
Creators: name: Weiß, Otto
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Distribution of Fitness Effects of Mutations from Evolutionary rescue on genotypic fitness landscapes
Creators: name: Wahl, L. M.
name: Campos, Paulo R. A.
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310299
subject: Bioinformatics and computational biology not elsewhere classified
classificationCode: 310499
subject: Evolutionary biology not elsewhere classified

description: Populations facing adverse environments, novel pathogens or invasive competitors may be destined to extinction if they are unable to adapt rapidly. Quantitative predictions of the probability of survival through adaptation, evolutionary rescue, have been previously developed for one of the most natural and well-studied mappings from an organism’s traits to its fitness, Fisher’s Geometric Model (FGM). While FGM assumes that all possible trait values are accessible via mutation, in many applications only a finite set of rescue mutations will be available, such as mutations conferring resistance to a parasite, predator or toxin. We predict the probability of evolutionary rescue, via de novo mutation, when this underlying genetic structure is included. We find that rescue probability is always reduced when its genetic basis is taken into account. Unlike other known features of the genotypic FGM, however, the probability of rescue increases monotonically with the number of available mutations and approaches the behaviour of the classical FGM as the number of available mutations approaches infinity.
Electron-electron interaction effects on transport through mesoscopic superconducting hybrid junctions
Creators: name: Saha, Arijit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Effects due to the proximity of a superconductor has motivated a lot of research work in the last several decades both from theoretical and experimental point of view. In this review we are going to describe the physics of systems containing normal metal-superconductor interface. Mainly we discuss transport properties through such hybrid structures. In particular, we describe the effects of electron electron interaction on transport through such superconducting junction of multiple one-dimensional quantum wires. The latter can be described in terms of a non-Fermi liquid theory called Luttinger liquid. In this review, from the application point of view, we also demonstrate the possible scenarios for production of pure spin current and large tunnelling magnetoresistance in such hybrid junctions and analyze the influence of electron-electron interaction on the stability of the production of pure spin current.
description: Invited Review Article, 56 pages, 18 figures. This is the published version
Christian R. Homrichhausen, Evangelische Christen in der Paulskirche 1848/49
Creators: name: Siemann, Wolfram
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Erich Naab, Das eine große Sakrament des Lebens
Creators: name: Dickerhof, Harald
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Data assimilation of fuel moisture in WRF-SFIRE
Creators: name: Vejmelka, Martin
name: Kochanski, Adam K.
name: Mandel, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: 86A10, 86A22, 62J05

description: Fuel moisture is a major influence on the behavior of wildland fires and an important underlying factor in fire risk. We present a method to assimilate spatially sparse fuel moisture observations from remote automatic weather stations (RAWS) into the moisture model in WRF-SFIRE. WRF-SFIRE is a coupled atmospheric and fire behavior model which simulates the evolution of fuel moisture in idealized fuel species based on atmospheric state. The proposed method uses a modified trend surface model to estimate the fuel moisture field and its uncertainty based on currently available observations. At each grid point of WRF-SFIRE, this information is combined with the model forecast using a nonlinear Kalman filter, leading to an updated estimate of fuel moisture. We demonstrate the effectiveness of the method with tests in two real-world situations: a region in Southern California, where two large Santa Ana fires occurred recently, and on a domain enclosing Colorado.
description: 4th Fire Behavior and Fuels Conference Raleigh, North Carolina, USA, February 18 - 22, 2013
Raimund Lachner, Das ekklesiologische Denken Johann Sebastian Dreys
Creators: name: Kustermann, Abraham Peter
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Operation of a Bloch oscillator
Creators: name: Renk, Karl Friedrich
name: Meier, Alexander
name: Stahl, Benjamin Ingo
name: Glukhovskoy, Anatoly
name: Jain, Manish
name: Appel, Helmut
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: Condensed Matter; Mesoscopic Systems and Quantum Hall Effect; Condensed Matter; Materials Science
subject: 530 Physik

description: We report the operation of a Bloch oscillator. The active medium was a staticvoltage driven, doped GaAs/AlAs superlattice which was electromagnetically coupled to a resonator. The oscillator produced tuneable microwave radiation (frequency ~ 60 GHz; power ~ 0.5 mW; efficiency ~ 4 %). The gain (~ 10^4 /cm) was due to the nonlinearity mediated by miniband electrons. We also present a theory of the oscillator. The Bloch oscillator should in principle be feasible for generation of radiation up to frequencies of 10 THz and more.
THE ROLE OF MUKHAMMAD RAKHIMOKHAN II (FERUZ) IN THE KHORAZM MIGHTY MOVEMENT
Creators: name: Ismailov, Tokhirjon
Publisher: name: Zenodo
Year: 2024

description: This thesis examines the influence of Mukhammad Rakhim Khan II on the formation of the Jadidist movement in Khorezm. In the second half of the 19th century, Mukhammad Rakhim Khan II, the ruler of the Khanate of Khiva, took an active part not only in state administration, but also in cultural and educational reforms. His attention to science, literature and culture laid the foundation for the emergence and spread of modernist ideas in society. The article analyzes the historical conditions of the development of the Jadidist movement and the policy of Mukhammad Rakhim Khan II in this regard. Historical sources and scientific literature were used during the research.
Biexciton recombination rates in self-assembled quantum dots
Creators: name: Wimmer, Michael
name: Nair, S. V.
name: Shumway, J.
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: The radiative recombination rates of interacting electron-hole pairs in a quantum dot are strongly affected by quantum correlations among electrons and holes in the dot. Recent measurements of the biexciton recombination rate in single self-assembled quantum dots have found values spanning from two times the single exciton recombination rate to values well below the exciton decay rate. In this paper, a Feynman path-integral formulation is developed to calculate recombination rates including thermal and many-body effects. Using real-space Monte Carlo integration, the path-integral expressions for realistic three-dimensional models of InGaAs/GaAs, CdSe/ZnSe, and InP/InGaP dots are evaluated, including anisotropic effective masses. Depending on size, radiative rates of typical dots lie in the regime between strong and intermediate confinement. The results compare favorably to recent experiments and calculations on related dot systems. Configuration interaction calculations using uncorrelated basis sets are found to be severely limited in calculating decay rates.
Terahertz superlattice parametric oscillator
Creators: name: Renk, Karl Friedrich
name: Stahl, Benjamin Ingo
name: Rogl, Andreas
name: Janzen, T.
name: Pavel'ev, D.
name: Koschurinov, Y.
name: Ustinov, V.
name: Zhukov, A.
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: We report a GaAs/AlAs superlattice parametric oscillator. It was pumped by a microwave field (power few mW) and produced 3rd harmonic radiation (frequency near 300 GHz). The nonlinearity of the active superlattice was due to Bragg reflections of conduction electrons at the superlattice planes. A theory of the nonlinearity indicates that parametric oscillation should be possible up to frequencies above 10 THz. The active superlattice may be the object of further studies of predicted extraordinary nonlinearities for THz fields.
Semiclassical description of shell effects in finite fermion systems
Creators: name: Brack, Matthias
Publisher: name: Universität Regensburg
Year: 2001
Subjects: subject: 530 Physik

description: Since its first appearance in 1971, Gutzwiller\'s trace formula has been extended to systems with continuous symmetries, in which not all periodic orbits are isolated. In order to avoid the divergences occurring in connection with symmetry breaking and orbit bifurcations (characteristic of systems with mixed classical dynamics), special uniform approximations have been developed. We first summarize some of the recent developments in this direction. Then we present applications of the extended trace formulae to describe prominent gross-shell effects of various finite fermion systems (atomic nuclei, metal clusters, and a mesoscopic device) in terms of the leading periodic orbits of their suitably modeled classical mean-field Hamiltonians.
Michael von Jung, Melpomene u. a. Ausgewählte Werke
Creators: name: Fürst, Walter
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Isoscalar Giant Resonance Strengths in $^{32}$S and possible excitations of superdeformed and $^{28}$Si + $α$ cluster bandheads
Creators: name: Itoh, M.
name: Kishi, S.
name: Sakaguchi, H.
name: Akimune, H.
name: Fujiwara, M.
name: Garg, U.
name: Hara, K.
name: Hashimoto, H.
name: Hoffman, J.
name: Kawabata, T.
name: Kawase, K.
name: Murakami, T.
name: Nakanishi, K.
name: Nayak, B. K.
name: Terashima, S.
name: Uchida, M.
name: Yasuda, Y.
name: Yosoi, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Isoscalar giant resonances and low spin states in $^{32}$S have been measured with inelastic $α$ scattering at extremely forward angles including zero degrees at E$_α$ = 386 MeV. By applying the multipole decomposition analysis, various excited states are classified according to their spin and parities (J$^π$), and are discussed in relation to the super deformed and $^{28}$Si + $α$ cluster bands.
Rainer A. Müller, Akademische Ausbildung zwischen Staat und Kirche
Creators: name: Glaser, Hubert
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7
Rashba effect in quantum networks
Creators: name: Bercioux, D.
name: Governale, M.
name: Cataudella, V.
name: Ramaglia, V.
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through one-dimensional and two-dimensional finite-size networks is studied by means of the scattering formalism. In some particular quantum networks, the action of the magnetic field or of the Rashba spin-orbit coupling induces localization of the electron wave function. This phenomenon, which relies on both the quantum-mechanical interference and the geometry of the network, is manifested through the suppression of the conductance for specific values of the spin-orbit-coupling strength or of the magnetic field. Furthermore, the interplay of the Aharonov-Bohm phases and of the non-Abelian phases introduced by spin-orbit coupling, is discussed in a number of cases.
title: Land-surface controls on afternoon precipitation diagnosed from observational data: uncertainties and confounding factors
Creators: name: Guillod, B. P.
name: Orlowsky, B.
name: Miralles, D.
name: Teuling, A. J.
name: Blanken, P. D.
name: Buchmann, N.
name: Ciais, Philippe
name: Ek, Michael
name: Findell, Kirsten L.
name: Gentine, Pierre
name: Lintner, Benjamin R.
name: Scott, R. L.
name: Van Den Hurk, Bart
name: Seneviratne, Sonia I.
Publisher: name: Columbia University
Year: 2014
Subjects: Soil science
Atmosphere
Remote sensing

description: The feedback between soil moisture and precipitation has long been a topic of interest due to its potential for improving weather and seasonal forecasts. The generally proposed mechanism assumes a control of soil moisture on precipitation via the partitioning of the surface turbulent heat fluxes, as assessed via the evaporative fraction (EF), i.e., the ratio of latent heat to the sum of latent and sensible heat, in particular under convective conditions. Our study investigates the poorly understood link between EF and precipitation by relating the before-noon EF to the frequency of afternoon precipitation over the contiguous US, through statistical analyses of multiple EF and precipitation data sets. We analyze remote-sensing data products (Global Land Evaporation: the Amsterdam Methodology (GLEAM) for EF, and radar precipitation from the NEXt generation weather RADar system (NEXRAD)), FLUXNET station data, and the North American Regional Reanalysis (NARR). Data sets agree on a region of positive relationship between EF and precipitation occurrence in the southwestern US. However, a region of strong positive relationship over the eastern US in NARR cannot be confirmed with observation-derived estimates (GLEAM, NEXRAD and FLUXNET). The GLEAM–NEXRAD data set combination indicates a region of positive EF–precipitation relationship in the central US. These disagreements emphasize large uncertainties in the EF data. Further analyses highlight that much of these EF–precipitation relationships could be explained by precipitation persistence alone, and it is unclear whether EF has an additional role in triggering afternoon precipitation. This also highlights the difficulties in isolating a land impact on precipitation. Regional analyses point to contrasting mechanisms over different regions. Over the eastern US, our analyses suggest that the EF–precipitation relationship in NARR is either atmospherically controlled (from precipitation persistence and potential evaporation) or driven by vegetation interception rather than soil moisture. Although this aligns well with the high forest cover and the wet regime of that region, the role of interception evaporation is likely overestimated because of low nighttime evaporation in NARR. Over the central and southwestern US, the EF–precipitation relationship is additionally linked to soil moisture variations, owing to the soil-moisture-limited climate regime.
UV Cascade in Classical Yang-Mills via Kinetic Theory
Creators: name: York, Mark C. Abraao
name: Kurkela, Aleksi
name: Lu, Egang
name: Moore, Guy D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that classical Yang-Mills theory with statistically homogeneous and isotropic initial conditions has a kinetic description and approaches a scaling solution at late times. We find the scaling solution by explicitly solving the Boltzmann equations, including all dominant processes (elastic and number-changing). Above a scale $p_{max} \propto t^{1/7}$ the occupancy falls exponentially in $p$. For asymptotically late times and sufficiently small momenta the occupancy scales as $f(p)\propto 1/p$, but this behavior sets in only at very late time scales. We find quantitative agreement of our results with lattice simulations, for times and momenta within the range of validity of kinetic theory.
description: 18 pages, 4 figures
Heinz Hürten, Kurze Geschichte des deutschen Katholizismus 1800-1960
Creators: name: Gritz, Martin
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 7 (1988): Rottenburger Jahrbuch für Kirchengeschichte, Band 7