cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Numerische Simulation der Einkopplung transienter elektromagnetischer Felder in nichtlinear-abgeschlossene Leitungsnetzwerke mit einem SPICE-Netzwerksimulator
Creators: name: Magdowski, Mathias
name: Vick, Ralf
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Störfestigkeit
subject: Kabel
subject: Leitungen
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Die Einkopplung externer elektromagnetischer Felder in Versorgungs-, Verbindungs- und Kommunikationskabel bestimmt maßgeblich die gestrahlte Störfestigkeit der daran angeschlossenen Systeme und Baugruppen. Kabelbäume können dabei als Leitungsnetzwerke modelliert werden [1], [2], auf denen durch Feldeinkopplung angeregte Strom- und Spannungswellen entlang der Einzelleitungen propagieren und an Knotenpunkten sowie Abschlüssen transmittiert bzw. reflektiert werden. Häufig sind Leitungsenden mit nichtlinearen Halbleiterbauelementen abgeschlossen, z. B. als Überspannungsschutz. Deren Berücksichtigung erfordert eine Simulation im Zeitbereich [3]. Dabei können die als verlustarm angenommenen Leitungen als Kette von L-C- Gliedern modelliert werden. Das einfallende Feld einer ebenen Welle wird entsprechend der Agrawal-Formulierung als verteilte Spannungsquellen entlang der Leitung und als konzentrierte Spannungsquellen an den Leitungsenden wirksam. In diesem Beitrag wird ein numerisches Simulationsverfahren für die transiente Feldeinkopplung pulsförmiger ebener Wellen in Leitungsnetzwerke mit nichtlinearen Abschlüssen vorgestellt, das auf einem üblichen SPICE-kompatiblen Netzwerksimulator [4] basiert. Gegenüber ähnlichen vorhandenen Verfahren [5] sind somit viele weitere Halbleiterbauelementmodelle nutzbar. Weiterhin soll durch diesen Ansatz die Effizienz und numerische Stabilität des Simulationsverfahrens erhöht werden.
Direct side information learning for zero-shot regression
Creators: name: Fdez-Díaz, Miriam
name: Montañés, Elena
name: Quevedo, José Ramón
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Zero-shot learning provides models for targets for which instances are not available, commonly called unobserved targets. The availability of target side information becomes crucial in this context in order to properly induce models for these targets. The literature is plenty of strategies to cope with this scenario, but specifically designed on the basis of a zero-shot classification scenario, mostly in computer vision and image classification, but they are either not applicable or easily extensible for a zero-shot regression framework for which a continuos value is required to be predicted rather than a label. In fact, there is a considerable lack of methods for zero-shot regression in the literature. Two approaches for zero-shot regression that work in a two-phase procedure were recently proposed. They first learn the observed target models through a classical regression learning ignoring the target side information. Then, they aggregate those observed target models afterwards exploiting the target side information and the models for the unobserved targets are induced. Despite both have shown quite good performance because of the different treatment they grant to the common features and to the side information, they exploit features and side information separately, avoiding a global optimization for providing the unobserved target models. The proposal of this paper is a novel method that jointly takes features and side information in a one-phase learning process, but treating side information properly and in a more deserving way than as common features. A specific kernel that properly merges features and side information is proposed for this purpose resulting in a novel approach that exhibits better performance over both artificial and real datasets.
Bewertung der Sensitivität eines hybriden Gleichtaktfilters für Traktionsinverter gegenüber Variationen der Betriebsparameter
Creators: name: Müller, Denis
name: Beltle, Michael
name: Tenbohlen, Stefan
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: EMV-Filter
subject: Störreduzierung
subject: Gleichtaktfilter
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In der Leistungselektronik wird für die Miniaturisierung von Baugruppen viel Aufwand betrieben. Neue Halbleitertechnologien wie Siliziumcarbid unterstützen diesen Trend. Um den benötigten Bauraum der Leistungselektronik weiter reduzieren zu können, stellen hybride EMV – Filter eine Möglichkeit zur Verkleinerung der Filterbaugruppen und damit des Gesamtvolumens der Komponente dar [1]. Durch die Kombination von konventionellen passiven Filtern mit aktiven Elementen zur Störreduzierung lässt sich deutlich an Bauraum bei induktiven Filterkomponenten einsparen. Die Filterdämpfung der aktiven Filter ist jedoch, ebenso wie bei konventionellen EMV – Filtern, von der Quell bzw. Senkenimpedanz abhängig [2]. Diese Impedanzen können sich im Betrieb sowohl durch verschiedene Einbausituationen als auch unterschiedliche Betriebspunkte verändern. Im Hinblick auf mögliche Anwendungen aktiver und hybrider EMV – Filter ist eine Sensitivitätsuntersuchung auf solche schwankenden Betriebsparameter bzw. Einflüsse durch unterschiedliche Einbausituationen notwendig. Deren Analyse wird an einem Traktionsinverter im CISPR 25 Komponententest durchgeführt. Ein eigens entwickeltes, hybrides Gleichtaktfilter fungiert dabei als Prüfling. Nach einer kurzen Vorstellung der entwickelten Hardware des Hybridfilters werden anschließend die Auswirkungen von unterschiedlichen Zuleitungslängen, Ausgangsströmen, Batteriespannungen und Schaltfrequenzen auf die Filterdämpfung des Hybridfilters gezeigt. Die Auswahl der betrachteten Parameter unterliegt dabei keinem Anspruch auf Vollständigkeit, sondern bildet lediglich einen Ausschnitt aus möglichen Variationen ab und soll eine Vorgehensweise zu deren Bewertung aufzeigen.
Return currents and energy transport in the solar flaring atmosphere
Creators: name: Codispoti, Anna
name: Torre, Gabriele
name: Piana, Michele
name: Pinamonti, Nicola
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: 85-08, 65R32

description: According to a standard ohmic perspective, the injection of accelerated electrons into the flaring region violates local charge equilibrium and therefore, in response, return currents are driven by an electric field to equilibrate such charge violation. In this framework, the energy loss rate associated to these local currents has an ohmic nature and significantly shortens the acceleration electron path. In the present paper we adopt a different viewpoint and, specifically, we study the impact of the background drift velocity on the energy loss rate of accelerated electrons in solar flares. We first utilize the Rutherford cross-section to derive the formula of the energy loss rate when the collisional target has a finite temperature and the background instantaneously and coherently moves up to equilibrate the electron injection. We then use the continuity equation for electrons and imaging spectroscopy data provided by RHESSI to validate this model. Specifically, we show that this new formula for the energy loss rate provides a better fit of the experimental data with respect to the model based on the effects of standard ohmic return currents.
description: Submitted to The Astrophysical Journal
Neue eisenzeitliche Siedlungsspuren in Soest im überregionalen Kontext
Creators: name: Stürze, Tobias
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2016

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2014 (2015)
Constraints on relativity violations from gamma-ray bursts
Creators: name: Kostelecky, Alan
name: Mewes, Matthew
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Tiny violations of the Lorentz symmetry of relativity and the associated discrete CPT symmetry could emerge in a consistent theory of quantum gravity such as string theory. Recent evidence for linear polarization in gamma-ray bursts improves existing sensitivities to Lorentz and CPT violation involving photons by factors ranging from ten to a million.
description: 10 pages
Interacting Galactic Neutral Hydrogen Filaments and Associated High-Frequency Continuum Emission
Creators: name: Verschuur, Gerrit L
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galactic HI emission profiles in an area where several large-scale filaments at velocities ranging from -46 km/s to 0 km/s overlap were decomposed into Gaussian components. Eighteen families of components defined by similarities of center velocity and line width were identified and related to small-scale structure in the high-frequency continuum emission observed by the WMAP spacecraft, as evidenced in the Internal Linear Combination (ILC) map of Hinshaw et al. (2007). When the center velocities of the Gaussian families, which summarize the properties of all the HI along the lines-of-sight in a given area, are used to focus on HI channel maps the phenomenon of close associations between HI and ILC peaks reported in previous papers is dramatically highlighted. Of particular interest, each of two pairs of HI peaks straddles a continuum peak. The previously hypothesized model for producing the continuum radiation (Verschuur, 2010) involving free-free emission from electrons is re-examined in the light of the new data. By choosing reasonable values for the parameters required to evaluate the model, the distance for associated HI-ILC features is of order 30 to 100 pc. No associated H-alpha radiation is expected because the electrons involved exist throughout the Milky Way. The mechanism for clumping and separation of neutrals and electrons needs to be explored.
Annihilation dynamics of stringlike topological defects in a nematic lyotropic liquid crystal
Creators: name: Guimarães, R. R.
name: Mendes, R. S.
name: Fernandes, P. R. G.
name: Mukai, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Topological defects can appear whenever there is some type of ordering. Its ubiquity in nature has been the subject of several studies, from early Universe to condensed matter. In this work, we investigated the annihilation dynamics of defects and antidefects in a lyotropic nematic liquid crystal (ternary mixture of potassium laurate, decanol and deionized-destilated water) using the polarized optical light microscopy technique. We analyzed Schlieren textures with topological defects produced due to a symmetry breaking in the transition of the isotropic to nematic calamitic phase after a temperature quench. As result, we obtained for the distance D between two annihilating defects (defect-antidefect pair), as a function of time t remaining for the annihilation, the scaling law D ~ t^α, with α= 0.390 and standard deviation σ= 0.085. Our findings go in the direction to extend experimental results related to dynamics of defects in liquid crystals since only thermotropic and polymerics ones had been investigated. In addition, our results are in good quantitative agreement with previous investigations on the subject.
description: Accepted for publication in Journal of Physics: Condensed Matter
Phasenrichtige HF-Störstrommessung und HF-Stromeinspeisung mit kalibrierten Impedanzzangen
Creators: name: Harm, Martin
name: Kerfin, Oliver
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Effizienz
subject: Stromzange
subject: Impedanzmessung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Der Einsatz schnell schaltender Wide-Bandgap-Halbleiter mit dem Ziel der Effizienzsteigerung leistungselektronischer Systeme erfordert präzise EMV-Messtechnik. Nicht nur um sicherzustellen, dass die Grenzwerte eingehalten werden, sondern auch zur Unterstützung des Designprozesses im Sinne einer ganzheitlichen Effizienzoptimierung, die auch EMV-Maßnahmen wie Filter und Schirmungen mit einbezieht. Eine solche Optimierung erfordert eine umfangreiche Modellierung des Gesamtsystems und dazu die möglichst genaue Kenntnis der Hochfrequenzeigenschaften der beteiligten Komponenten unter realen Randbedingungen. Am Institut für EMV wird dazu an einem kontaktlosen Messverfahren geforscht, das auf der Verwendung so genannter Impedanzzangen basiert, die zusammen mit dem dazugehörigen Kalibrierverfahren in [1] präsentiert wurden. Die Impedanzzange ist eine spezielle Form der Stromzange, die nur eine einzige oder sehr wenige Sekundärwindungen besitzt. Idealerweise wird so die Impedanz des Systems unter Test (SUT) direkt auf den Anschluss der Impedanzzange abgebildet. Dies ermöglicht die rückführbare 3-Term-Kalibrierung der Zange unter Verwendung dreier Kalibrierstandards mit Hilfe von Reflexionsmessungen, wodurch das komplexe Übertragungsverhalten der Impedanzzange ermittelt werden kann [1]. Dieses Verfahren ermöglicht breitbandige kontaktlose Impedanzmessungen [1] und kontaktlose vektorielle Netzwerkanalyse [2, 5]. In diesem Beitrag geht es darum, inwiefern dieses Verfahren auch zur Hochfrequenzstörstrommessung und Hochfrequenzstromeinspeisung verwendet werden kann, ob sich dadurch Vorteile gegenüber den klassischen Methoden ergeben und welche Probleme dabei auftreten.
Comparative study of tight-binding and ab initio electronic structure calculations focused on magnetic anisotropy in ordered CoPt alloy
Creators: name: Zemen, J.
name: Mašek, J.
name: Kučera, J.
name: Mol, J. A.
name: Motloch, P.
name: Jungwirth, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An empirical multiorbital (spd) tight binding (TB) model including magnetism and spin-orbit coupling is applied to calculations of magnetic anisotropy energy (MAE) in CoPt L1_0 structure. A realistic Slater-Koster parametrisation for single-element transition metals is adapted for the ordered binary alloy. Spin magnetic moment and density of states are calculated using a full-potential linearized augmented plane-wave (LAPW) ab initio method and our TB code with different variants of the interatomic parameters. Detailed mutual comparison of this data allows for determination of a subset of the compound TB parameters tuning of which improves the agreement of the TB and LAPW results. MAE calculated as a function of band filling using the refined parameters is in broad agreement with ab initio data for all valence states and in quantitative agreement with ab initio and experimental data for the natural band filling. Our work provides a practical basis for further studies of relativistic magnetotransport anisotropies by means of local Green's function formalism which is directly compatible with our TB approach.
description: 10 pages, 4 figures
Padus vulgaris Poiret
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: O. vulgaris Poiret (O. caryophyllacea Sm., O. Galii Duby) Cat. 283 und 430. l: Champery (Pugsley); La Bätiaz bei Martigny (Coquoz); Dorenaz (Gams); Le Rosel (idem). - 2:Raron(Christ);Naters (idem).- 3:Ob Randa gegen die Weisshornhütte(Huber); Kapellenweg bei Saas-Fee (A. Keller). - 3a: La Presa ob Gondo (Becherer). - 4: Ausserbinn (J.); ob Imfeld im Binntal (Knetsch).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Herausforderungen bei der Durchführung von reproduzierbaren BCI-Messungen
Creators: name: Deutschmann, Bernd
name: Winkler, Gunter
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Störfestigkeit
subject: Kfz
subject: BCI
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Die Charakterisierung der elektromagnetischen Störfestigkeit ist ein wichtiger Qualifizierungsschritt für elektronische Komponenten in Kraftfahrzeugen. Verschiedene Testmethoden können verwendet werden, um die ungestörte Funktionalität des Systems sicherzustellen. Ein dabei angewandtes wichtiges Messverfahren ist die sogenannte „Bulk Current Injection“ Methode, kurz BCI genannt, welche in der ISO 11452-1 [1] beziehungsweise in ISO 11452-4 beschrieben [2]. Sie ist weit verbreitet und wird häufig von vielen Automobilherstellern in ihren EMV-Spezifikationen zur Charakterisierung elektronischer Geräte gefordert. Aus diesem Grund ist es wichtig, dass der durchgeführte Messvorgang zuverlässig ist und unabhängig davon, wo und wann ein Gerät gemessen wird, die Ergebnisse immer reproduzierbar sind [3]. Dies ist leider nicht immer der Fall, da diese Art der Messung häufig zu Problemen bei der genauen Durchführung und Interpretation des Messaufbaus und der Testprozedur führt [4]. Zahlreiche Untersuchungen wurden dazu schon durchgeführt und in Publikationen veröffentlicht [5], [6]. In [7] zum Beispiel wurden die Effekte von Masserückleitungen sowie das Übersprechen im Kabelbaum während des BCI-Tests experimentell untersucht und es zeigte sich, dass die Testergebnisse erheblich von den unterschiedlichen Bedingungen im Kabelbaum abhängen. P. S. Crovetti zeigte in [8], dass über 100MHz der tatsächliche in den Prüfling eingekoppelte Störstrom erheblich vom Störstrom, der während des im Standard beschriebene Kalibrierungsverfahrens eingestellt wird, abweicht. Solche Diskrepanzen können zu unzuverlässigen Ergebnissen bei BCI-Störfestigkeitstests führen. Daher ist bei der Durchführung des BCI-Tests besondere Vorsicht geboten.
Identification of vortexes obstructing the dynamo mechanism in laboratory experiments
Creators: name: Limone, Angelo
name: Hatch, David R
name: Forest, Cary B
name: Jenko, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The magnetohydrodynamic dynamo effect explains the generation of self-sustained magnetic fields in electrically conducting flows, especially in geo- and astrophysical environments. Yet the details of this mechanism are still unknown, e.g., how and to which extent the geometry, the fluid topology, the forcing mechanism and the turbulence can have a negative effect on this process. We report on numerical simulations carried out in spherical geometry, analyzing the predicted velocity flow with the so-called Singular Value Decomposition, a powerful technique that allows us to precisely identify vortexes in the flow which would be difficult to characterize with conventional spectral methods. We then quantify the contribution of these vortexes to the growth rate of the magnetic energy in the system. We identify an axisymmetric vortex, whose rotational direction changes periodically in time, and whose dynamics are decoupled from those of the large scale background flow, is detrimental for the dynamo effect. A comparison with experiments is carried out, showing that similar dynamics were observed in cylindrical geometry. These previously unexpected eddies, which impede the dynamo effect, offer an explanation for the experimental difficulties in attaining a dynamo in spherical geometry.
description: 25 pages, 12 figures, submitted to Physics of Fluids
Effects of charging and electric field on the properties of silicene and germanene
Creators: name: Gürel, H. Hakan
name: Özçelik, V. Ongun
name: Ciraci, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Using first-principles Density Functional Theory calculations, we showed that electronic and magnetic properties of bare and Ti adatom adsorbed single-layer silicene and germanene, which are charged or exerted by a perpendicular electric field are modified to attain new functionalities. In particular, when exerted by a perpendicular electric field, the symmetry between the planes of buckled atoms is broken to open a gap at the Dirac points. The occupation of 3d-orbitals of adsorbed Ti atom changes with charging or applied electric field to induce significant changes of magnetic moment. We predict that neutral silicene uniformly covered by Ti atoms becomes a half-metal at a specific value of coverage and hence allows the transport of electrons in one spin direction, but blocks the opposite direction. These calculated properties, however exhibit a dependence on the size of the vacuum spacing between periodically repeating silicene and germanene layers, if they are treated using plane wave basis set within periodic boundary condition. We clarified the cause of this spurious dependence and show that it can be eliminated by the use of local orbital basis set.
description: Accepted for Journal of Physics: Condensed Matter
Large- and microscale analysis of pluvial flood hotspots, using free and open-source products
Creators: name: Sadeghi, Farzaneh
Publisher: name: Zenodo
Year: 2021

description: This work aims to examine the quality and capabilities of open-source numerical flood modeling tools and their data preparation process in situations where calibration datasets may be of poor quality or not available at all. For this purpose, EPA's StormWater Management Model (SWMM) was selected to investigate 1D modeling and LISFLOOD-FP was chosen for 2D modeling.
title: Zur Erinnerung an Herrn Pfarrer D. Ernst Miescher-Siber
title: geboren am 19. Februar 1848, gestorben am 31. Januar 1930
titleType: Subtitle
Creators: name: Arnold, Wilhelm
name: Schachenmann, Hermann
name: Koechlin, Alphons
name: Benz, Gustav
name: Staehelin, Ernst
name: Preiswerk, Adolf
Publisher: name: Zentralbibliothek Zürich
Year: 1930
Subjects: subject: 230 Christentum, christliche Theologie
subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Miescher, Ernst Gottfried
subject: Ellikon an der Thur
subject: Sankt Gallen
subject: Basel
subject: Bern
subject: Lipperswil (Wäldi)

description: Enth.: Personalien ; Ansprachen, gehalten an der Trauerfeier in der Pauluskirche am 2. Februar 1930 von Herr Pfarrer Wilhelm Arnold, Herr Pfarrer Hermann Schachenmann, Hauptpfarrer zu St. Leonhard, Herr Pfarrer D. Alphons Koechlin, Vicepräsident des Komitees der Evangel. Missionsgesellschaft zu Basel, Herr Pfarrer D. Gustav Benz, Herr Pfarrer D. Ernst Staehelin ; Gebet am Grabe gesprochen von Herrn Adolf Preiswerk
Echtzeit-Spektralanalyse zur Identifikation von Störquellen in Kraftfahrzeugen
Creators: name: Koj, Sebastian
name: Fisahn, Sven
name: Garbe, Heyno
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Kfz
subject: Störquelle
subject: Spektralanalyse
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Der Automobilsektor ist derzeit in seiner vermutlich größten Veränderungsphase seit seinem Bestehen. Die Elektrifizierung des Antriebstranges, automatisiertes bzw. autonomes Fahren und Connectivity – diese Schlüsselworte beschreiben diesen Prozess und bringen eine Vielzahl von Herausforderungen bei der Sicherstellung der EMV im Gesamtfahrzeug mit sich. Um den straffen Entwicklungszeitplan einzuhalten, sind strukturierte Vorgehensweisen bei der Fehlersuche in frühen Entwicklungsstadien notwendig. In diesem Beitrag wird anhand eines realen Beispiels gezeigt, wie mithilfe von sukzessiver messtechnischer Echtzeit-Spektralanalyse eines Einsatzleitfahrzeugs der Berufsfeuerwehr Hannover sporadische Störungen des Sprechfunks, welche nur während der Einsatzfahrt auftraten, behoben werden konnten. Hierzu wird zunächst in Kapitel 2 die Ausgangssituation vorgestellt. Anschließend wird in Kapitel 3 kurz auf klassische EMV Messungen mit einem Oszilloskop (Zeitbereich) und mit einem Spektrumanalysator (Frequenzbereich) eingegangen. In Kapitel 4 wird schließlich mithilfe von Echtzeitanalyse der Antennenfußpunktspannung, der Gleichtaktströme auf dem Bordnetz und des abgestrahlten elektrischen Felds in der Nähe des Fahrzeugs die Störquelle und der Störkoppelweg anhand von sporadisch auftretenden Störmustern identifiziert. Die Analyse dieser Störmuster führt zur schnellen Identifikation der Störquelle samt Koppelpfad und stellt den Neuheitsgehalt dieses Beitrags dar. Der in dieser Arbeit präsentierter Ansatz basiert auf den in [1] präsentierten Messergebnissen.
Limit theorems for translation flows (published version)
Creators: name: Bufetov, Alexander I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37A50, 37E35, 37B10, 60F, 30F60, 37D25, 28D10

description: The aim of this paper is to obtain an asymptotic expansion for ergodic integrals of translation flows on flat surfaces of higher genus (Theorem 1) and to give a limit theorem for these flows (Theorem 2).
description: The results of this paper are already contained in the preprint arXiv:0804.3970. The exposition here is different: instead of general Markov compacta, Veech's zippered rectangles are used. 69 pages, 3 figures; Annals of Mathematics, 2012, online at http://annals.math.princeton.edu/articles/7111
Abelian and non-Abelian gauge fields in dipole-dipole interacting Rydberg atoms
Creators: name: Kiffner, Martin
name: Li, Wenhui
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We show that the dipole-dipole interaction between two Rydberg atoms can lead to substantial Abelian and non-Abelian gauge fields acting on the relative motion of the two atoms. We demonstrate how the gauge fields can be evaluated by numerical techniques. In the case of adiabatic motion in a single internal state, we show that the gauge fields give rise to a magnetic field that results in a Zeeman splitting of the rotational states. In particular, the ground state of a molecular potential well is given by the first excited rotational state. We find that our system realises a synthetic spin-orbit coupling where the relative atomic motion couples to two internal two-atom states. The associated gauge fields are non-Abelian.
description: 11 pages, 6 figures, contribution to the Journal of Physics B special issue on non-Abelian gauge fields
Molekularbiologische und biochemische Analyse der Lektine Horcolin und HL#2 und weiterer apoplastidärer Proteine von Hordeum vulgare
Creators: name: Grunwald, Ingo
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Lectins
subject: apoplast
subject: Hordeum vulgare
subject: 570
subject: 540

description: [no abstract]
Genetische Analyse und Markierung von Zwergrost- und BaYMV-Resistenzgenen der Gerste (Hordeum vulgare L.)
Creators: name: Hunger, Sandra
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Barley yellow mosaic virus
subject: Puccinia hordei
subject: molecular markers
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Charakterisierung von binären und ternären Seltene Erden Oxiden
Creators: name: Schwendt, Dominik
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Rare earth oxide
subject: epitaxy
subject: high-k dielectric
subject: Seltene Erden Oxid
subject: Epitaxie
subject: High-k Dielektrikum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Die Rolle der Hc-Fragmente der Botulinum Neurotoxine A, B, C und D : Charakterisierung der Bindung an die nicht-toxische nicht-hämagglutinierende Komponente und neuronale Rezeptoren
Creators: name: Strotmeier, Jasmin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Progenitor toxin complex
subject: neuronal receptors
subject: human synaptotagmin
subject: ganglioside binding
subject: crystal structure
subject: Botulinum Neurotoxin
subject: Progenitortoxinkomplex
subject: neuronale Rezeptoren
subject: humanes Synaptotagmin
subject: Gangliosidbindung
subject: Kristallstruktur
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Chirale Liganden und Organokatalysatoren auf Basis von Kohlenhydraten
Creators: name: Telligmann, Susanne Marie
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Asymmetric synthesis
subject: carbohydrates
subject: oxazoline phosphinite ligands
subject: organocatalysis
subject: Asymmetrische Synthese
subject: Kohlenhydrate
subject: Oxazolin-Phosphinit-Liganden
subject: Organokatalyse
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Existence of ground states for negative ions at the binding threshold
Creators: name: Bellazzini, Jacopo
name: Frank, Rupert L.
name: Lieb, Elliott H.
name: Seiringer, Robert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: As the nuclear charge Z is continuously decreased an N-electron atom undergoes a binding-unbinding transition at some critical Z_c. We investigate whether the electrons remain bound when Z=Z_c and whether the radius of the system stays finite as Z_c is approached. Existence of a ground state at Z_c is shown under the condition Z_c
description: 17 pages
Descriptive complexity of circuit-based counting classes
Creators: name: Haak, Anselm
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: descriptive complexity
subject: Boolean circuits
subject: arithmetic circuits
subject: counting complexity
subject: finite model theory
subject: Deskriptive Komplexität
subject: Boole'sche Schaltkreise
subject: Arithmetische Schaltkreise
subject: Zählkomplexität
subject: Endliche Modelltheorie
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: In this thesis, we study the descriptive complexity of counting classes based on Boolean circuits. In descriptive complexity, the complexity of problems is studied in terms of logics required to describe them. The focus of research in this area is on identifying logics that can express exactly the problems in specific complexity classes. For example, problems are definable in ESO, existential second-order logic, if and only if they are in NP, the class of problems decidable in nondeterministic polynomial time. In the computation model of Boolean circuits, individual circuits have a fixed number of inputs. Circuit families are used to allow for an arbitrary number of input bits. A priori, the circuits in a family are not uniformly described, but one can impose this as an additional condition, e.g., requiring that there is an algorithm constructing them. For any circuit there is a function counting witnesses (or proofs) for the circuit producing the output 1. Consequently, any class of Boolean circuits has a corresponding class of counting functions. We characterize counting classes in terms of counting winning strategies in the model-checking game for different logics extending first-order logic, namely the classes #AC⁰, #NC¹, #SAC¹, and #AC¹. These classes restrict circuits to constant or logarithmic depth and in some cases also with respect to the fan-in of gates. In the case of the logarithmic-depth classes, this also requires new characterizations of the corresponding classes of Boolean circuit, as known results do not seem suitable for this approach. Our characterization of #AC⁰ also leads to a new characterization of the related class TC⁰. Our results apply both in the non-uniform as well as the uniform setting. We put our new characterization of #AC⁰ into perspective by studying connections to another logic-based counting class, #FO. This class is known to coincide with #P, the class of functions counting the number of accepting computation paths of NP-machines. We study a variant of #FO and the alternation hierarchy inside this class, as well as its connections to the class #AC⁰. Finally, we observe that often it is easier to characterize non-uniform circuit complexity classes than their uniform counterparts. This lends hope to the idea that characterizations of uniform classes could directly imply corresponding results in the non-uniform setting. We prove that this is true for a wide variety of classes, in particular for all classes we consider in this thesis.
Entwicklung von triboaktiven, reibungsmindernden thermisch gespritzten Schichten für Hochtemperaturanwendungen
Creators: name: Erne, Martin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Extrusion
subject: suspension plasma spraying
subject: lowering of friction
subject: Strangpressen
subject: Suspensionsplasmaspritzen
subject: Reibungsminderung
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
An inclination lemma for normally hyperbolic manifolds with an application to diffusion
Creators: name: Sabbagh, Lara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Let ($M$, $Ω$) be a smooth symplectic manifold and $f:M\rightarrow M$ be a symplectic diffeomorphism of class $C^l$ ($l\geq 3$). Let $N$ be a compact submanifold of $M$ which is boundaryless and normally hyperbolic for $f$. We suppose that $N$ is controllable and that its stable and unstable bundles are trivial. We consider a $C^1$-submanifold $\d$ of $M$ whose dimension is equal to the dimension of a fiber of the unstable bundle of $T_NM$. We suppose that $\d$ transversely intersects the stable manifold of $N$. Then, we prove that for all $\varepsilon>0$, and for $n$ $\in$ $\N$ large enough, there exists $x_n$ $\in$ $N$ such that $f^n(\d)$ is $\varepsilon$-close, in the $C^1$ topology, to the strongly unstable manifold of $x_n$. As an application of this $λ$-lemma, we prove the existence of shadowing orbits for a finite family of invariant minimal sets (for which we do not assume any regularity) contained in a normally hyperbolic manifold and having heteroclinic connections. As a particular case, we recover classical results on the existence of diffusion orbits (Arnold's example).
Inter-spacecraft frequency distribution for future gravitational wave observatories
Creators: name: Barke, Simon
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Gravitational waves
subject: laser interferometry
subject: timing noise
subject: Graviationswellen
subject: Laserinterferometrie
subject: Zeitrauschen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Von interkultureller zu kulturenorientierter Bildung und Erziehung : Versuch einer theoretischen und begrifflichen Orientierung
Creators: name: Baumann, Ina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Culture
subject: intercultural competence
subject: diversity
subject: Kultur
subject: Interkulturalität
subject: interkulturelle Kompetenz
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
Current Status of Simulations
Creators: name: Fragile, P. Chris
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: As the title suggests, the purpose of this chapter is to review the current status of numerical simulations of black hole accretion disks. This chapter focuses exclusively on global simulations of the accretion process within a few tens of gravitational radii of the black hole. Most of the simulations discussed are performed using general relativistic magnetohydrodynamic (MHD) schemes, although some mention is made of Newtonian radiation MHD simulations and smoothed particle hydrodynamics. The goal is to convey some of the exciting work that has been going on in the past few years and provide some speculation on future directions.
description: 15 pages, 14 figures, to appear in the proceedings of the ISSI-Bern workshop on "The Physics of Accretion onto Black Holes" (8-12 October 2012)
Orobanche teucrii Holandre
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: O. Teucrii Holandre Cat. 283. l: Evionnaz (F.). - 2: Raron (Christ); Natersberg (Schröter, Christ). - 3: Fionnay (Marietan); Zeneggen (Stehler); Törbel (idem); Saas-Fee (A. Keller, Becherer); Schallberg am Simplon (Huber). - 4: Binntal, mehrfach (J., Bernoulli,Knetsch).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Der Berlich zu Cöln und der Perlach zu Augsburg
Creators: name: Becker, Jakob
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 42 (1867): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Ein Fragment Trierscher Geschichtschreibung aus dem XI. Jahrhundert; zugleich ein Beitrag zur Geschichte von Pfalzel
Creators: name: Kraus, Franz Xaver
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 42 (1867): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Neue Inschrift der Legio I. (Germanica) aus Bonn
Creators: name: Freudenberg, Johannes
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 42 (1867): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
High-frequency vibrational density of states of a disordered solid
Creators: name: Tomaras, Constantin
name: Schirmacher, Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the high-frequency behavior of the density of vibrational states in three-dimensional elasticity theory with spatially fluctuating elastic moduli. At frequencies well above the mobility edge, instanton solutions yield an exponentially decaying density of states. The instanton solutions describe excitations, which become localized due to the disorder-induced fluctuations, which lower the sound velocity in a finite region compared to its average value. The exponentially decaying density of states (known in electronic systems as the Lifshitz tail) is governed by the statistics of a fluctuating-elasticity landscape, capable of trapping the vibrational excitations.
description: 4 pages
Gesundheitsökonomische Aspekte der Individualisierung der Medizin
Creators: name: Frank, Martin Heinrich Johann
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Individualized medicine
subject: personalized medicine
subject: stratified medicine
subject: genetic diagnostics
subject: oncology
subject: rare diseases
subject: health policy
subject: Individualisierte Medizin
subject: personalisierte Medizin
subject: stratifizierte Medizin
subject: Gendiagnostik
subject: Biomarker
subject: Onkologie
subject: seltene Erkrankungen
subject: Gesundheitspolitik
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Genomdiversität der dominierenden Pseudomonas aeruginosa Klone C und PA14
Creators: name: Fischer, Sebastian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Genome diversity
subject: sequencing
subject: intraclonal fitness
subject: Pseudomonas aeruginosa
subject: Genomdiversität
subject: Sequenzierung
subject: intraklonale Fitness
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
title: Shiga toxin-producing E. coli in food: Prediction of the disease-causing potential of the various strains not yet possible: BfR Opinion No 009/2018 of 19 April 2018
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2018
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2018, no. 009
title: Hygiene fürs Hühnerei - Schutz vor Campylobacter: Stellungnahme Nr. 011/2018 des BfR vom 11. Mai 2018
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2018
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2018, no. 011
On the Structure of Compatible Rational Functions
Creators: name: Chen, Shaoshi
name: Feng, Ruyong
name: Fu, Guofeng
name: Li, Ziming
Publisher: name: arXiv
Year: 2013
Subjects: subject: Symbolic Computation (cs.SC)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 33F10

description: A finite number of rational functions are compatible if they satisfy the compatibility conditions of a first-order linear functional system involving differential, shift and q-shift operators. We present a theorem that describes the structure of compatible rational functions. The theorem enables us to decompose a solution of such a system as a product of a rational function, several symbolic powers, a hyperexponential function, a hypergeometric term, and a q-hypergeometric term. We outline an algorithm for computing this product, and present an application.
Quantized Friction across Ionic Liquid Thin Films
Creators: name: Smith, Alexander M.
name: Lovelock, Kevin R. J.
name: Gosvami, Nitya Nand
name: Welton, Tom
name: Perkin, Susan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ionic liquids, salts in the liquid state under ambient conditions, are of great interest as precision lubricants. Ionic liquids form layered structures at surfaces, yet it is not clear how this nano-structure relates to their lubrication properties. We measured the friction force between atomically smooth solid surfaces across ionic liquid films of controlled thickness in terms of the number of ion layers. Multiple friction-load regimes emerge, each corresponding to a different number of ion layers in the film. In contrast to molecular liquids, the friction coefficients differ for each layer due to their varying composition.
Einflussparameter und Grenzen der Gleichtaktauslöschung im gegenphasigen Inverterbetrieb
Creators: name: Bertelmann, Jonas
name: Beltle, Michael
name: Tenbohlen, Stefan
name: Eidher, Roland
Publisher: name: Aachen : Apprimus
Year: 2020
Subjects: subject: Kfz
subject: Störfestigkeit
subject: Gleichtaktstörung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Aufgrund der zunehmenden Elektrifizierung verschiedener Komponenten, wie beispielsweise der Lenkung im Automobilbereich, muss in der Entwicklung ein wesentlich größerer Aufwand betrieben werden, um einen störungsfreien, EMV-gerechten Betrieb gewährleisten zu können. Insbesondere bei taktender Leistungselektronik ist mit erheblichen breitbandigen Störemissionen zu rechnen. Im klassischen EMV-Ansatz werden Emissionen mithilfe passiver Filter auf ein Grenzwert konformes Maß reduziert. Als mögliche Alternative wird in [1] eine neue Methode vorgestellt, bei der in mehrphasigen, redundant aufgebauten Invertern mithilfe einer geeigneten Ansteuerung der MOSFETs und einem optimierten, symmetrischen Schaltungsdesign eine Gleichtaktauslöschung ohne passive Filter und damit ohne zusätzlichen Bauteilaufwand erreicht werden kann. Eine Reduzierung der Gleichtaktstörungen von bis zu 40 dB bis in den Frequenzbereich der Mittelwelle ist damit möglich. In diesem Beitrag werden darauf aufbauend die kritischen Einflussparameter bewertet und die Grenzen der Methode aufgezeigt. Anhand einer Sensitivitätsbetrachtung wird evaluiert, welche Parameter durch geeignete Verfahren kompensiert werden können und welche beim Hardwarelayout des Inverters zwingend zu beachten sind. Zu nennen sind hier beispielsweise die Designanforderungen bzgl. des symmetrischen Aufbaus.
title: National Belonging and Violent Norms of Gendered Migrant Citizenship: Indonesian Migrant Domestic Workers’ Appropriation of a National Ritual
Creators: name: Dinkelaker, Samia
Publisher: name: Göttinger Centrum für Geschlechterforschung
Year: 2018

description:
This article takes into view negotiations over the behaviour of Hong Kong-based Indonesian domes-tic workers as morally upright and respectable citizens. In collaboration with private agencies, the Indonesian government has actively promoted the temporary outmigration of female workers into low-waged and precarious employment arrangements as a strategy to combat unemployment and generate remittances, foreign exchange and development. The Indonesian labour migration program is, however, faced with the public’s anxieties and indignation over migrant domestic workers’ experi-ences of gender-based violence abroad and concerns over national dignity. As pointed out by a num-ber of feminist studies, “labor brokerage states” (Rodriguez 2010) meet the gendered contradictions of their labour migration programmes with appeals to migrant domestic workers’ morality. This arti-cle makes use of Judith Butler’s notion of “normative violence” (Butler 1999, 2004) to frame these appeals as subtle forms of discipline that police and regulate Indonesian migrant domestic workers. It addresses the strong role of female morality in defining which workers deserve protection and which workers can adequately represent the Indonesian nation on the international stage. By taking the case of Hong Kong-based Indonesian domestic workers’ self-organised and distinct enactment of a na-tional ritual on Independence Day 2014, I discuss how they appropriate norms of national belonging and how at the same time they challenge the subtle forms of violence inherent in moralising notions of gendered “migrant citizenship” (Rodriguez 2010).

description: Gender thoughts; 2018,1
description: Hofmann, Susanne; Senoguz, Hatice Pinar (eds.):  Special Issue "Gender and Violence in Contexts of Migration and Displacement" ;  p. 8-23