cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Buoyant Magnetic Loops Generated by Global Convective Dynamo Action
Creators: name: Nelson, Nicholas J.
name: Brown, Benjamin P.
name: Brun, A. Sacha
name: Miesch, Mark S.
name: Toomre, Juri
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Our global 3D simulations of convection and dynamo action in a Sun-like star reveal that persistent wreaths of strong magnetism can be built within the bulk of the convention zone. Here we examine the characteristics of buoyant magnetic structures that are self-consistently created by dynamo action and turbulent convective motions in a simulation with solar stratification but rotating at three times the current solar rate. These buoyant loops originate within sections of the magnetic wreaths in which turbulent flows amplify the fields to much larger values than is possible through laminar processes. These amplified portions can rise through the convective layer by a combination of magnetic buoyancy and advection by convective giant cells, forming buoyant loops. We measure statistical trends in the polarity, twist, and tilt of these loops. Loops are shown to preferentially arise in longitudinal patches somewhat reminiscent of active longitudes in the Sun, although broader in extent. We show that the strength of the axisymmetric toroidal field is not a good predictor of the production rate for buoyant loops or the amount of magnetic flux in the loops that are produced.
description: Solar Physics format, 22 pages, accepted by Solar Physics for topical issue related NSO Workshop #26: Solar Origins of Space Weather and Space Climate
Die Konstanzer Paternosterleisten – Analyse zur Technik und Wirtschaft im spätmittelalterlichen Handwerk der Knochenperlenbohrer
Creators: name: Spitzers, Thomas A.
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Johannes Itten: Das Museum Rietberg der Stadt Zürich
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1952

description: Enthält: Manuskript; Typoskript; Separatabdruck aus "Das Werk" Heft 12, Dezember 1952, 39. Jg. (5 Exemplare) / Beilage: Brief von Heinz Keller (Redaktion Das Werk) an Johannes Itten
Metalloxide zur thermochemischen Hochtemperaturwärmespeicherung
Creators: name: Block, Tina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Thermochemical energy storage
subject: metal oxide
subject: gas/solid-reaction
subject: Thermochemische Energiespeicherung
subject: Metalloxid
subject: Gas/Feststoff-Reaktion
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Karl Dietrich Adam. Geologe, Paläontologe Urgeschichtsforscher und Hochschullehrer. 1921–2012
Creators: name: Reiff, Winfried
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Zwei Siedlungen der Münchshöfer Kultur in Oberösterreich
Creators: name: Pittioni, Richard
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 3 (1935)
Neuerscheinungen
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 4 (1935)
Vortrag "Grundlagen der Kunsterziehung heute"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1957

description: Enthält: Korrespondenz, Notizen, Manuskript und Typoskript betreffend des Vortrags, den Johannes Itten auf dem Kongress der International Society for Education through Art, Den Haag 19.-23. August 1957, gehalten hat, sowie 1 Broschüre zum Weltkongress von INSEA 1966
Topological Single Electron Pumping Assisted by Majorana Fermions
Creators: name: Liang, Qi-Feng
name: Wang, Zhi
name: Hu, Xiao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Single electron pumping based on the topological property of Majorana fermions (MFs) is proposed. The setup consists of a quantum dot and four nano topological superconductors (TSs) connected by constriction junctions, with an additional vortex located in the loop of TSs. Operation is performed by gate voltages at constriction junctions. Simulations with Bogloliubov-de Gennes equation demonstrate successfully quantum protection during switching operation.
description: 5 pages, 4 figures
Beeinflussung des Geräuschs von Induktionsmaschinen durch innovative Ständer- und Läufergeometrien
Creators: name: Garbe, Eike Matthias
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Air gap width
subject: induction machine
subject: noise
subject: slot position
subject: uneven slot pitch
subject: Geräusch
subject: Induktionsmaschine
subject: Luftspaltweite
subject: Modulation
subject: ungleichmäßiger Nutabstand
subject: Nutposition
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: [no abstract]
A white dwarf merger as progenitor of the anomalous X-ray pulsar 4U 0142+61?
Creators: name: Rueda, J. A.
name: Boshkayev, K.
name: Izzo, L.
name: Ruffini, R.
name: Aguilar, P. Loren
name: Kulebi, B.
name: Siguan, G. Aznar
name: Berro, E. Garcia
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It has been recently proposed that massive fast-rotating highly-magnetized white dwarfs could describe the observational properties of some of Soft Gamma-Ray Repeaters (SGRs) and Anomalous X-Ray Pulsars (AXPs). Moreover, it has also been shown that high-field magnetic (HFMWDs) can be the outcome of white dwarf binary mergers. The products of these mergers consist of a hot central white dwarf surrounded by a rapidly rotating disk. Here we show that the merger of a double degenerate system can explain the characteristics of the peculiar AXP 4U 0142+61. This scenario accounts for the observed infrared excess. We also show that the observed properties of 4U 0142+6 are consistent with an approximately $1.2 M_{\sun}$ white dwarf, remnant of the coalescence of an original system made of two white dwarfs of masses $0.6\, M_{\sun}$ and $1.0\, M_{\sun}$. Finally, we infer a post-merging age $τ_{\rm WD}\approx 64$ kyr, and a magnetic field $B\approx 2\times 10^8$ G. Evidence for such a magnetic field may come from the possible detection of the electron cyclotron absorption feature observed between the $B$ and $V$ bands at $\approx 10^{15}$ Hz in the spectrum of 4U 0142+61.
description: to appear in ApJ Letters
Entwicklung eines Modells zur Simulation von postfrontalen Niederschlagsgebieten
Creators: name: Himmelsbach, Stephan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Convective cells
subject: precipitation structure
subject: Konvektive Zellen
subject: Simulation
subject: Niederschlagsstruktur
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

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

description: G. Cruciata (L.) Scop. Cat. 176. Verbreitet. Obere Höhengrenzefestzustellen. Die Angabe des Cat.: 2300 m, ist nicht gesichert. JACCARDhat diese Höhenquotewillkürlichzur AngabeRION'S,Guide,S.102 (1872):«Severeu(entree de)» gesetzt. Der Eingang des Vallon de Severeu (Bagnes) liegt bei1800m.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
In-plane optical spectroscopy study on FeSe epitaxial thin film grown on SrTiO$_3$ substrate
Creators: name: Yuan, R. H.
name: Kong, W. D.
name: Yan, L.
name: Ding, H.
name: Wang, N. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We perform in-plane optical spectroscopy measurement on (00l) FeSe thin-film grown on SrTiO$_3$ substrate by pulsed laser deposition method. The study indicates that the low frequency conductivity consists of two Drude components, a broad one which takes up most of the spectral weight and a very narrow one roughly below 100-150 \cm. The narrow Drude component locates at so low frequencies that no such behavior was observed in iron pnictides. The overall plasma frequency is found to be smaller than the FeAs based compounds, suggesting a stronger correlation effect. Similar to iron pnictides, a temperature-induced spectral weight transfer is observed for FeSe. However, the relevant energy scale is lower. Additionally, different from a recent ARPES measurement which revealed a spin density wave (SDW) order at low temperature for FeSe thin films grown on SrTiO$_3$ substrate, no signature of the band structure reconstruction arising from the formation of the SDW order is seen by optical measurement in the thick FeSe films.
description: 5 pages, 4 figures
Optical Interferometry of early-type stars with PAVO@CHARA. I. Fundamental stellar properties
Creators: name: Maestro, V.
name: Che, X.
name: Huber, D.
name: Ireland, M. J.
name: Monnier, J. D.
name: White, T. R.
name: Kok, Y.
name: Robertson, J. G.
name: Schaefer, G. H.
name: Brummelaar, T. A. Ten
name: Tuthill, P. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present interferometric observations of 7 main-sequence and 3 giant stars with spectral types from B2 to F6 using the PAVO beam combiner at the CHARA array. We have directly determined the angular diameters for these objects with an average precision of 2.3%. We have also computed bolometric fluxes using available photometry in the visible and infrared wavelengths, as well as space-based ultraviolet spectroscopy. Combined with precise \textit{Hipparcos} parallaxes, we have derived a set of fundamental stellar properties including linear radius, luminosity and effective temperature. Fitting the latter to computed isochrone models, we have inferred masses and ages of the stars. The effective temperatures obtained are in good agreement (at a 3% level) with nearly-independent temperature estimations from spectroscopy. They validate recent sixth-order polynomial (B-V)-$T_\mathrm{eff}$ empirical relations \citep{Boyajian2012a}, but suggest that a more conservative third-order solution \citep{vanBelle2009} could adequately describe the (V-K)-$T_\mathrm{eff}$ relation for main-sequence stars of spectral type A0 and later. Finally, we have compared mass values obtained combining surface gravity with inferred stellar radius (\textit{gravity mass}) and as a result of the comparison of computed luminosity and temperature values with stellar evolutionary models (\textit{isochrone mass}). The strong discrepancy between isochrone and gravity mass obtained for one of the observed stars, $γ$\,Lyr, suggests that determination of the stellar atmosphere parameters should be revised.
description: 13 pages, 9 figures, accepted for publication in MNRAS
Vortrag "Abstrakte Malerei"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1958

description: Enthält: 1 Manuskript; 2 Typoskripte (jeweils mehrere Exemplare) / Kurzvortrag von Johannes Itten anlässlich der Ausstellungseröffnung in der Kunsthalle Baden-Baden am 17.05.1958
Einfluss des Metall-Halbleiter Rückkontaktes auf die photokatalytische Aktivität von hocheffizienten Titandioxid Schichten
Creators: name: Freitag, Janna
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Schottky-contact
subject: photoelectrochemistry
subject: impedance spectroscopy
subject: photocatalysis
subject: Schottky-Kontakt
subject: Photoelektrochemie
subject: Impedanz
subject: Photokatalyse
subject: ISO 22197-2
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Band-Like Transport in High Mobility Unencapsulated Single-Layer MoS2 Transistors
Creators: name: Jariwala, Deep
name: Sangwan, Vinod K.
name: Late, Dattatray J.
name: Johns, James E.
name: Dravid, Vinayak P.
name: Marks, Tobin J.
name: Lauhon, Lincoln J.
name: Hersam, Mark C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ultra-thin MoS2 has recently emerged as a promising two-dimensional semiconductor for electronic and optoelectronic applications. Here, we report high mobility (>60 cm2/Vs at room temperature) field-effect transistors that employ unencapsulated single-layer MoS2 on oxidized Si wafers with a low level of extrinsic contamination. While charge transport in the sub-threshold regime is consistent with a variable range hopping model, monotonically decreasing field-effect mobility with increasing temperature suggests band-like transport in the linear regime. At temperatures below 100 K, temperature-independent mobility is limited by Coulomb scattering, whereas, at temperatures above 100 K, phonon-limited mobility decreases as a power law with increasing temperature.
Geometric Triviality of the Strongly Minimal Second Painlevé equations
Creators: name: Nagloo, Joel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H05, 34M55, 03C60, 14H70

description: We show that the strongly minimal second Painlevé equation (y" = 2y^3+ty+α) is geometrically trivial, that is we show that if y_1,...,y_n are distinct solutions such that y_1,y_1',y_2,y_2',...,y_n,y_n' are algebraically dependent over C(t), then already for some i
Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications
Creators: name: Kwon, Jae Hyun
name: Mukherjee, Sankha Subhra
name: Deorani, Praveen
name: Hayashi, Masamitsu
name: Yang, Hyunsoo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The authors have investigated the possibility of utilizing spin waves for inter- and intra-chip communications, and as logic elements using both simulations and experimental techniques. Through simulations it has been shown that the decay lengths of magnetostatic spin waves are affected most by the damping parameter, and least by the exchange stiffness constant. The damping and dispersion properties of spin waves limit the attenuation length to several tens of microns. Thus, we have ruled out the possibility of inter-chip communications via spin waves. Experimental techniques for the extraction of the dispersion relationship have also been demonstrated, along with experimental demonstrations of spin wave interference for amplitude modulation. The effectiveness of spin wave modulation through interference, along with the capability of determining the spin wave dispersion relationships electrically during manufacturing and testing phase of chip production may pave the way for using spin waves in analog computing wherein the circuitry required for performing similar functionality becomes prohibitive.
description: Appl Phys A (2013)
Die neolithischen Siedlungshinterlassenschaften aus den Kampagnen von 1993 bis 1995 vom Gaulskopf bei Warburg-Ossendorf, Kreis Höxter
Creators: name: Pfeffer, Ingo
Publisher: name: Ausgrabungen und Funde in Westfalen-Lippe
Year: 2017

description: -
description: Ausgrabungen und Funde in Westfalen-Lippe, Ausgrabungen und Funde in Westfalen-Lippe 13 (2017)
Herstellung, Charakterisierung und Anwendung einer rekombinanten Patchoulolsynthese zur biokatalytischen Herstellung von Sesquiterpenen
Creators: name: Frister, Thore Hermann Wilhelm
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Sesquiterpenes
subject: sesquiterpene synthases
subject: biocatalysis
subject: enzyme technology
subject: patchouli oil
subject: Sesquiterpene
subject: Sesquiterpensynthasen
subject: Biokatalyse
subject: Enzymtechnik
subject: Patchouliöl
subject: Patchoulol
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Regularized boosting with an increasing coefficient magnitude stop criterion as meta-learner in hyperparameter optimization stacking ensemble
Creators: name: Fdez-Díaz, Laura
name: Quevedo, José Ramón
name: Montañés, Elena
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In Hyperparameter Optimization (HPO), only the hyperparameter configuration with the best performance is chosen after performing several trials, then, discarding the effort of training all the models with every hyperparameter configuration trial and performing an ensemble of all them. This ensemble consists of simply averaging the model predictions or weighting the models by a certain probability. Recently, other more sophisticated ensemble strategies, such as the Caruana method or the stacking strategy has been proposed. On the one hand, the Caruana method performs well in HPO ensemble, since it is not affected by the effects of multicollinearity, which is prevalent in HPO. It just computes the average over a subset of predictions with replacement. But it does not benefit from the generalization power of a learning process. On the other hand, stacking methods include a learning procedure since a meta-learner is required to perform the ensemble. Yet, one hardly finds advice about which meta-learner is adequate. Besides, some meta-learners may suffer from the effects of multicollinearity or need to be tuned to reduce them. This paper explores meta-learners for stacking ensemble in HPO, free of hyperparameter tuning, able to reduce the effects of multicollinearity and considering the ensemble learning process generalization power. At this respect, the boosting strategy seems promising as a stacking meta-learner. In fact, it completely removes the effects of multicollinearity. This paper also proposes an implicit regularization in the classical boosting method and a novel non-parametric stop criterion suitable only for boosting and specifically designed for HPO. The synergy between these two improvements over boosting exhibits competitive and promising predictive power performance compared to other existing meta-learners and ensemble approaches for HPO other than the stacking ensemble.
Die Macht des Silbers – ältester Bergbau im Siegerland bei Kreuztal-Burgholdinghausen
Creators: name: Zeiler, Manuel
name: Garner, Jennifer
name: Golze, Rolf
name: Steffens, Gero
name: Thomas, Peter
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2016

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2014 (2015)
Studien zur Synthese der Naturstoffe Sorangicin Z und Haprolid
Creators: name: Govori, Bukurije
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Wacker-cyclisation
subject: vinylogous Mukaiyama aldol reaction
subject: natural products
subject: Sorangicin
subject: Haprolid
subject: Wacker-Cyclisierung
subject: vinyloge Mukaiyama Reaktion
subject: Naturstoffe
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Short duration high amplitude flares detected on the M dwarf star KIC 5474065
Creators: name: Ramsay, Gavin
name: Doyle, J. Gerry
name: Hakala, Pasi
name: Garcia-Alvarez, David
name: Brooks, Adam
name: Barclay, Thomas
name: Still, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using data obtained during the RATS-Kepler project we identified one short duration flare in a 1 hour sequence of ground based photometry of the dwarf star KIC 5474065. Observations made using GTC show it is a star with a M4 V spectral type. Kepler observations made using 1 min sampling show that KIC 5474065 exhibits large amplitude (deltaF/F>0.4) optical flares which have a duration as short as 10 mins. We compare the energy distribution of flares from KIC 5474065 with that of KIC 9726699, which has also been observed using 1 min sampling, and ground based observations of other M dwarf stars in the literature. We discuss the possible implications of these short duration, relatively low energy flares would have on the atmosphere of exo-planets orbiting in the habitable zone of these flare stars.
description: Accepted by MNRAS
"Kompetenzverhandlungen" : zur Relevanz von Sozialkompetenz bei Führungskräften der Continental AG am Beispiel dual Studierender ; theoretische Grundlagen und empirische Befunde
Creators: name: Bode, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Competences
subject: communicative action
subject: social competences
subject: Kompetenz
subject: kommunikatives Handeln
subject: Sozialkompetenz
subject: Dewey Decimal Classification::600 | Technik::650 | Management
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Studien zur Sorangiolid A Totalsynthese
Creators: name: Géraldy, Magalie Nadège Elodie
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: total synthesis
subject: natural products
subject: myxobacteria
subject: Marshall reaction
subject: Suzuki cross-coupling
subject: Totalsynthese
subject: Naturstoffe
subject: Myxobakterium
subject: Sorangiolid
subject: Mashall Reaktion
subject: Suzuki Kreuzkupplung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Räumlicher und zeitlicher Transfer von hydrologischen Modellparametern und deren Anwendung in der Klimafolgenfoschung
Creators: name: Wallner, Markus
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Hydrological modeling
subject: regionalization
subject: Hydrologische Modellierung
subject: Regionalisierung
subject: Self-Organizing Maps
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Untersuchung des turbulenten Wärmeflusses über Eisrinnen mit hochaufgelösten Large-Eddy Simulationen
Creators: name: Witha, Björn
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Leads
subject: heat flux
subject: Eisrinnen
subject: Wärmefluss
subject: Large-Eddy Simulation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Integritätsbedingungen für Geodaten
Creators: name: Werder, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Integritätsbedingungen
subject: object constraint language
subject: MapReduce
subject: integrity constraints
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: [no abstract]
Einfluss einer Nährstoffsupplementierung auf Krankheitsaktivität und Nährstoffstatus von Patienten mit rheumatoider Arthritis
Creators: name: Willers, Janina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Rheumatoid arthritis
subject: disease activity
subject: omega-3 fatty acids
subject: antioxidants
subject: Rheumatoide Arthritis
subject: Krankheitsaktivität
subject: Omega-3-Fettsäuren
subject: Antioxidanzien
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Kaiserzeitliche Fibel aus Vasilica (Bessarabien)
Creators: name: Moroşan, Nicol N.
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 1 (1935)
Aufsatz "Kunsterziehung"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1950

description: Enthält: 1) Entwurfsmanuskript "Kunsterziehung" (11 Blätter); 2) Typoskript-Durchschlag "Kunsterziehung", 13. Juli 1950 (10 Blätter), 3) gedruckter Aufsatz, in: Der Pelikan, Heft 50, September 1950 (3 Exemplare); 4) Fotokopie eines Typoskripts "Anmerkungen zu Kunsterziehung" (1 Blatt); 5) Brief der Günther-Wagner-Pelikan-Werke an Johannes Itten, 01.06.1950
Diffusivity in multiple scattering systems
Creators: name: Chumley, Timothy
name: Feres, Renato
name: Zhang, Hong-Kun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider random flights of point particles inside $n$-dimensional channels of the form $\mathbb{R}^{k} \times \mathbb{B}^{n-k}$, where $\mathbb{B}^{n-k}$ is a ball of radius $r$ in dimension $n-k$. The particle velocities immediately after each collision with the boundary of the channel comprise a Markov chain with a transition probabilities operator $P$ that is determined by a choice of (billiard-like) random mechanical model of the particle-surface interaction at the "microscopic" scale. Our central concern is the relationship between the scattering properties encoded in $P$ and the constant of diffusivity of a Brownian motion obtained by an appropriate limit of the random flight in the channel. Markov operators obtained in this way are {\em natural} (definition below), which means, in particular, that (1) the (at the surface) Maxwell-Boltzmann velocity distribution with a given surface temperature, when the surface model contains moving parts, or (2) the so-called Knudsen cosine law, when this model is purely geometric, is the stationary distribution of $P$. We show by a suitable generalization of a central limit theorem of Kipnis and Varadhan how the diffusivity is expressed in terms of the spectrum of $P$ and compute, in the case of 2-dimensional channels, the exact values of the diffusivity for a class of parametric microscopic surface models of the above geometric type (2).
description: 39 pages, 11 images
Aufsatz "Kinderzeichnung"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1953

description: Enthält: 1) Manuskript "Die Kinderzeichnung" (2 Blätter); 2) Manuskript "Kinderzeichnung" (2 Blätter); 3) Typoskript "Kinderzeichnung", datiert 29.01.1953 (1 Blatt); 4) Manuskript "Zweibrück / Kinderzeichnungen" (2 Blätter), dabei 1 Brief von The American Crayon Company (Emmy Zweibruck) an Johannes Itten, 30.06.1955 (1 Blatt)
Digitale Bildverarbeitung zur Beurteilung von biotechnologischen Prozessen
Creators: name: Marquard, Daniel
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: image processing
subject: in situ microscopy
subject: bioprocess monitoring
subject: cell cultivation
subject: Bildverarbeitung
subject: In-situ-Mikroskopie
subject: Bioprozessüberwachung
subject: Zellkultivierung
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Electric-field-induced magnetization changes in Co/Al2O3 granular multilayers
Creators: name: Sahadevan, Ajeesh M.
name: Kalitsov, Alan
name: Kalon, Gopinadhan
name: Bhatia, Charanjit S.
name: Velev, Julian
name: Yang, Hyunsoo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study experimentally the effect of electric field on the magnetization of Co/Al2O3 granular multilayers. We observe two distinct regimes: (a) low-field regime when the net magnetization of the system changes in a reversible way with the applied electric field and (b) high-field regime when the magnetization decreases irreversibly. The former is attributed to the changes in the relative 3d-orbital occupation of the minority and majority bands in the Co granules. A theoretical model has been developed to explain the electric field induced changes in the band structure of the granular system and hence the magnetic moment. The latter result may be understood assuming the electric field induces oxygen migration from Al2O3 to the Co granules, since an increase in oxidation state of the Co granules is shown, through ab-initio calculations, to give rise to a reduced magnetization of the system.
description: Phys. Rev. B (2013)
Social–emotional competencies and psychological well-being across secondary school transition
Creators: name: Shum, Christopher
name: Dockray, Samantha
name: Gallagher, Stephen
name: Mc Mahon, Jennifer
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology

description: This study profiled the association between social– emotional competencies, psychological well-being (PWB), and secondary/middle school transition. Analysis drew from 233 sixth-class/sixth-grade students aged 11–13 years who completed measures of emotion regulation, perceived social support, self-esteem, and PWB at baseline and 1-month follow-up in primary school, and at 6-month follow-up post-secondary school transition. COVID-19 school closures, school socioeconomic status and gender were examined as moderators. Repeated-measures multi-level models revealed a significant decline in boys' emotional suppression use, an increase in boys' self-esteem, and a decline in girls' PWB across the transition. Further, perceived social support, self-esteem, and gender were significant predictors of post transition PWB while controlling for baseline PWB. This highlights the importance of enhancing social support and self-esteem across secondary school transition and considering gender differences in school transition effects. Policymakers should consider interventions that bolster these factors during this critical developmental phase.
Kleine Mitteilungen
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 1 (1935)
Probabilistische Finite Element Modellierung des mechanischen Materialverhaltens von Salzgestein
Creators: name: Grehn, Mathias
Publisher: name: Hannover : Institut für Baumechanik und Numerische Mechanik
Year: 2017
Subjects: subject: Finite-element-method
subject: stochastic finite-element-method
subject: creep
subject: rock salt
subject: Finite-Elemente-Methode
subject: stochastische Finite-Elemente-Methode
subject: Kriechen
subject: Salzgestein
subject: polynomial Chaos
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Galium tricorne Stokes Cat.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: G. tricorne Stokes Cat. 179und 427. 2: Daillon (J.); Grimisuat (Mantz); Montana (Coquoz);Randogne(idem).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Fundchronik
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 1 (1935)
Dynamics of Entanglement in one and two-dimensional spin systems
Creators: name: Sadiek, Gehad
name: Xu, Qing
name: Kais, Sabre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a review of dynamics of entanglement in one and two dimensional systems under the effect of external magnetic field and different degrees of anisotropy at zero and finite temperatures. Different techniques for treating the spin systems with large Hilbert space dimensions are discussed such as trace minimization algorithm, time-evolution matrix transformation and step by step projection technique.
description: review article to appear in: To appear in Adv. Chem. Phys. (2013)
Fundchronik
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 2 (1935)
Ein Leugenstein von Friolzheim, südöstlich Pforzheim
Creators: name: Paret, Oscar
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 3 (1935)
Strengthening weak value amplification with recycled photons
Creators: name: Dressel, Justin
name: Lyons, Kevin
name: Jordan, Andrew N.
name: Graham, Trent M.
name: Kwiat, Paul G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the use of cyclic weak measurements to improve the sensitivity of weak-value amplification precision measurement schemes. Previous weak-value experiments have used only a small fraction of events, while discarding the rest through the process of "post-selection". We extend this idea by considering recycling of events which are typically unused in a weak measurement. Here we treat a sequence of polarized laser pulses effectively trapped inside an interferometer using a Pockels cell and polarization optics. In principle, all photons can be post-selected, which will improve the measurement sensitivity. We first provide a qualitative argument for the expected improvements from recycling photons, followed by the exact result for the recycling of collimated beam pulses, and numerical calculations for diverging beams. We show that beam degradation effects can be mitigated via profile flipping or Zeno reshaping. The main advantage of such a recycling scheme is an effective power increase, while maintaining an amplified deflection.
description: 13 pages, 8 figures
Interferometry with Bose-Einstein condensates from ground to space
Creators: name: Becker, Dennis
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: atom interferometry
subject: Bose-Einstein condensation
subject: microgravity
subject: space
subject: Atominterferometrie
subject: Bose-Einstein Kondensat
subject: Schwerelosigkeit
subject: Weltraum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Quantum sensors based on atom interferometry are precise measurement devices whose ultimate performance can be reached using Bose–Einstein condensates (BECs) in extended free fall. This thesis summarizes the endeavour of the QUANTUS and MAIUS collaborations to enable BECs for precision interferometry in space. The presented results have set the foundation for future space missions aiming at geodesy applications or tests of fundamental physics.
On ponderomotive effects induced by Alfven waves in inhomogeneous 2.5D MHD plasmas
Creators: name: Thurgood, J. O.
name: McLaughlin, J. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Where spatial gradients in the amplitude of an Alfven wave are non-zero, a nonlinear magnetic-pressure gradient acts upon the medium (the ponderomotive force). We investigate the nature of such a force in inhomogeneous 2.5D MHD plasmas by analysing source terms in the nonlinear wave equations for the general case of inhomogeneous B and ρ, and consider supporting nonlinear numerical simulations. Our equations indicate there are two distinct classes of ponderomotive effect induced by Alfven waves in general 2.5D MHD, each with both a longitudinal and transverse manifestation; i) Geometric Effects: Gradients in the pulse geometry relative to the background magnetic field cause the wave to sustain cospatial disturbances, the longitudinal and transverse daughter disturbances - where we report on the transverse disturbance for the first time. ii) Grad (c_A) Effects: Where a pulse propagates through an inhomogeneous region (where the non-zero gradients in the Alfven-speed profile are non-zero), the nonlinear magnetic-pressure gradient acts to accelerate the plasma. Transverse gradients (phase mixing regions) excite independently propagating fast magnetoacoustic waves (generalising the result of Nakariakov et al. 1997, Solar Physics, 175, 93) and longitudinal gradients perturb along the field (thus creating static disturbances in β = 0, and slow waves in β \= 0). We additionally demonstrate that mode conversion due the nonlinear Lorentz force is a one-way process, and does not act as a mechanism to nonlinearly generate Alfven waves due to propagating magnetoacoustic waves. We conclude that these ponderomotive effects are induced by an Alfven wave propagating in any MHD medium, and have the potential to have significant consequences on the dynamics of energy transport and aspects of dissipation provided the system is sufficiently nonlinear and inhomogeneous.
description: Pre-print, Accepted for publication in Solar Physics Feb 2013
Mechanical Properties of Warped Membranes
Creators: name: Kosmrlj, Andrej
name: Nelson, David R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore how a frozen background metric affects the mechanical properties of planar membranes with a shear modulus. We focus on a special class of "warped membranes" with a preferred random height profile characterized by random Gaussian variables $h({\bf q})$ in Fourier space with zero mean and variance $ \sim q^{-d_h}$ and show that in the linear response regime the mechanical properties depend dramatically on the system size $L$ for $d_h \ge 2$. Membranes with $d_h=4$ could be produced by flash polymerization of lyotropic smectic liquid crystals. Via a self consistent screening approximation we find that the renormalized bending rigidity increases as $κ_R \sim L^{(d_h-2)/2}$ for membranes of size $L$, while the Young and shear modulii decrease according to $Y_R,\ μ_R \sim L^{-(d_h-2)/2}$ resulting in a universal Poisson ratio. Numerical results show good agreement with analytically determined exponents.
description: 27 pages, 10 figures, submitted to Physical Review E
125 Briefe und 39 Karten an Franz Overbeck
Creators: name: Köselitz, Heinrich
name: Overbeck, Ida
Publisher: name: [s.n.]
Year: 1878

description: von Heinrich Köselitz
description: Von den 125 Briefen sind 97 von Köselitz an Franz Overbeck im Original (davon 1 mit Abschrift 1 Briefes von Dr. Langbehn ), 2 von Köselitz an Franz Overbeck in Abschrift von Ida Overbeck, 1 von Köselitz an Nietzsche, 4 von Franz Overbeck an Köselitz im Original (davon 1 nur als Konzept, mit Abschrift von Ida Overbeck) und 21 von Franz Overbeck an Köselitz in Abschrift von Ida Overbeck (davon einer mit Abschrift des Berichts von Dr. Binswanger und einer mit Abschrift aus einem Brief von Frau Pastor Nietzsche). Die Briefe Nr. 60, 62, 68, 69, 70, 71, 73, 75, 89, 90, 91, 93, 111, 143 und 144 fehlen, an ihrer Stelle liegt jeweils ein modernes Blatt mit Bleistiftvermerk; Notiz auf dem Stellvertreter für die fehlende Nr. 111: "Exzerpt aus Brief vom 5. Januar 1893 bei C. A. Bernoulli «Overbeck an Nietzsche» Bd. 2 S. 346 möglicherweise aus dem hier fehlenden Stück, wie auch die S. 346 als Prozessfolge aus dem Buche verschwinden musste!"
description: Von den 39 Karten sind 37 von Köselitz an Overbeck und 2 vom Turiner Wirt Fino an Franz Overbeck in Abschrift von Ida Overbeck. Nr. 138 und 139 sind Drucksachen anlässlich der Hochzeit Peter Gasts (alias Heinrich Köselitz') mit Elise Wagner.
description: Nr. 144a: Alte Verpackung: Umschlag mit genauen Anweisungen von Franz Overbeck, wie nach seinem Tod mit den Köselitz-Briefen verfahren werden soll. 2. September 1901, mit einer Ergänzung vom Oktober 1904.
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch, Französisch
description: Verzeichnung=Description=Inventaire Januar 2023 HAN-Katalogisierungsregeln hmu
description: Beilage zu Nr. 60a: Alter Archivumschlag, mit Schreibmaschine rot beschriftet: "Briefe 1889-1890 Overbeck an Peter Gast (Originalabschrift von Frau Overbeck.) 21 Nummern, vom Verfasser beglaubigt. Im Besitz von Frau Overbeck. No. 17 Verz. 15. VIII. 1906."
description: 3 Beilagen zu Nr. 136a: Umschlag des Briefs 136a, Rebütbrief der Post mit Unzustellbarkeitsvermerk, Notiz von Overbeck auf der Rückseite eines weiteren Umschlags mit Erklärung über Umstände und unglückliche Auswirkungen des "auf der Post verirrt[en]" Briefes.
description: Beilage zu Nr. 137: Umschlag
description: Beilage 1: Umschlag ohne dazugehörenden Brief. Poststempel aus Weimar, 22. Mai 1895 (oder 1905?), zwischen Nr. 118 und 119 eingereiht.
description: Beilage 2: Blatt aus Antiquariatskatalog, in welchem ein Brief von Peter Gast angeboten wird, und eine Karte des Antiquariats, welches der UB mitteilt, der Brief sei bereits verkauft worden. Beides ursprünglich signiert mit "zu: Nachl. F. Overbeck. Viertens A 4" bzw. "Nachlass Franz Overbeck. Viertens A 5", was gemäss Vergleich mit altem Findbuch von 1945 (Viertens: Auf Peter Gast Bezügliches - A: Schriftstellerisches - 4: P. G. "Wer trägt die Schuld") der heutigen Signatur (Beilage zu) NL 53 : A 326 und NL 53 : A 326a oder A 327 entspräche; offenbar aber bereits vor Erstellung des alten Findbuchs an die heutige Stelle verschoben.
Entwicklung eines Lebensdauer-Vorhersagekonzepts für Elastomerwerkstoffe unter Berücksichtigung der Fehlstellenstatistik
Creators: name: Ludwig, Marvin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Fracture mechanics
subject: lifetime prediction
subject: flaws
subject: Bruchmechanik
subject: Lebensdauervorhersage
subject: Fehlstellen
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
J. J. M. Timmers, De Kunst van het Maasland
Creators: name: Grimme, Ernst Günther
Publisher: name: Aachener Kunstblätter
Year: 2017

description: Rezension zu:

J. J. M. Timmers, De Kunst van het Maasland, Bd. I, 448 Seiten, 534 Abb., Assen ( Van Gorcum u. Comp. N. V.) 1966
description: Aachener Kunstblätter, Bd. 43 (1972): Aachener Kunstblätter
Contact manifolds with symplectomorphic symplectizations
Creators: name: Courte, Sylvain
Publisher: name: arXiv
Year: 2012
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We provide examples of contact manifolds of any odd dimension $\geq 5$ which are not diffeomorphic but have exact symplectomorphic symplectizations.
A Robust Multilevel Method for Hybridizable Discontinuous Galerkin Method for the Helmholtz Equation
Creators: name: Chen, Huangxin
name: Lu, Peipei
name: Xu, Xuejun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A robust multilevel preconditioner based on the hybridizable discontinuous Galerkin method for the Helmholtz equation with high wave number is presented in this paper. There are two keys in our algorithm, one is how to choose a suitable intergrid transfer operator, and the other is using GMRES smoothing on coarse grids. The multilevel method is performed as a preconditioner in the outer GMRES iteration. To give a quantitative insight of our algorithm, we use local Fourier analysis to analyze the convergence property of the proposed multilevel method. Numerical results show that for fixed wave number, the convergence of the algorithm is mesh independent. Moreover, the performance of the algorithm depends relatively mildly on wave number.
description: 23 pages, 11 figures. arXiv admin note: text overlap with arXiv:1304.6825
Sommer 1889
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1889

description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Verzeichnung=Description=Inventaire Oktober 2023 HAN-Katalogisierungsregeln Minimalniveau nach Autopsie
description: Digitalisierung=Digitization=Numérisation Oktober 2023 TIFF
description: Erschliessungsniveau Minimalniveau
Ernst Simbriger. Die Vorgeschichte des Aussig-Karbitzer Bezirkes
Creators: name: Streit, Camilla
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: Rezension zu: Ernst Simbriger, Die Vorgeschichte des Aussig-Karbitzer Bezirkes. Anstalt für Sudeten-deutsche Heimatforschung, Vorgeschichtliche Abteilung, Heft 5. Reichenberg 1934. 52 S., Gr.-8°, 22 Abb. im Text.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 1 (1935)
Zwei keltische Bronzekannen aus Lenzburg
Creators: name: Jacobsthal, Paul
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 19, Nr. 2 (1935)