cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fluctuations in the Alpha-Effect and Grand Solar Minima
Creators: name: Olemskoy, S. V.
name: Choudhuri, A. R.
name: Kitchatinov, L. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Parameters of a special kind of α-effect known in dynamo theory as the Babcock-Leighton mechanism are estimated using the data of sunspot catalogs. The estimates evidence the presence of the Babcock-Leighton α-effect on the Sun. Fluctuations of the α-effect are also estimated. The fluctuation amplitude appreciably exceeds the mean value, and the characteristic time for the fluctuations is comparable to the period of the solar rotation. Fluctuations with the parameters found are included in a numerical model for the solar dynamo. Computations show irregular changes in the amplitudes of the magnetic cycles on time scales of centuries and millennia. The calculated statistical characteristics of the grand solar minima and maxima agree with the data on solar activity over the Holocene.
description: To appear in Astronomy Reports, 20 pages, 9 figures
Aus dem Dunkel ins Licht. Epochale Umbrüche in China und Europa
Creators: name: Mittler, Barbara
name: Maissen, Thomas
Publisher: name: Ruperto Carola
Year: 2015

description: Dieser Beitrag geht hervor aus einer ausführlichen Diskussion um Epochenbegriffe wie „Renaissance“, „Aufklärung“ und „Moderne“. Zur Genese dieser Zeitvorstellungen und zu ihrer effektvollen Inszenierung gehört – in Europa ebenso wie in China – die Metaphorik von Hell und Dunkel. Doch selbst dann, wenn sich die Protagonisten hier und dort offensichtlich beabsichtigt verwandter Terminologien und Bilder bedienten, so meinten sie damit doch immer wieder Unterschiedliches.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
title: The Influence of Thermal and Mechanical Stress on the Electrical Conductivity of ITO-Coated Polycarbonate Films
Creators: name: Johannes, Christopher
name: Lins, Fabian
name: Meyer, Miriam
name: Hartung, Michael
name: Heim, Hans-Peter
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: ITO
subject: electrochromic device
subject: polycarbonate
subject: 540
subject: ITO
subject: Polycarbonate
subject: Elektrochromie
subject: Leitfähigkeit

description: Gefördert durch den Publikationsfonds der Universität Kassel
Aus dem Schatten treten. Integration durch ein liberaleres Recht
Creators: name: Gathmann, Christina
Publisher: name: Ruperto Carola
Year: 2015

description: Zuwanderer ökonomisch und sozial zu integrieren – sie aus dem Schatten der Gesellschaft herauszuholen –, wird angesichts der aktuellen Entwicklungen zu einer Grundsatzfrage. Im vergangenen Jahr verzeichnete Deutschland die höchste Einwanderungsquote seit 22 Jahren. 2015 wird sich diese Zahl nochmals deutlich erhöhen. Unsere Arbeitsgruppe am Heidelberger Alfred-Weber-Institut für Wirtschaftswissenschaften untersucht, wie sich die Liberalisierung des Staatsbürgerrechts auf die ökonomische und soziale Integration auswirkt – und kommt zu einem überraschenden Ergebnis: Welche Effekte der Zugang zum deutschen Pass hat, ist vorrangig eine Frage des Geschlechts.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
“Re-thinking Artistic Knowledge Production: Global Media Cultures—Distributed Creativity.” An Introduction
Creators: name: Koch, Franziska
Publisher: name: Transcultural Studies
Year: 2015
Subjects: collaborative artistic and aesthetic practices; collective artistic practices; global media cultures; distributed creativity; transculturality

description: An introduction to the section, “Re-thinking Artistic Knowledge Production: Global Media Cultures—Distributed Creativity,” which features two contributions chosen from a symposium with the same title that took place May 23‒24, 2013 based on a collaboration between members of the DFG research network “Medien der kollektiven Intelligenz” (2011–2014, University of Konstanz) and hosted by the chair of global art history at Heidelberg University.
description: Transcultural Studies, No 2 (2015)
On the importance of a viscous surface layer to describe the lower boundary condition for temperature
Creators: name: Gross, Günter
Publisher: name: Stuttgart : E. Schweizerbart Science Publishers
Year: 2021
Subjects: subject: Boundary layer model
subject: surface temperature
subject: viscous sublayer
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: A viscous sublayer was introduced into a PBL model in order to specify the lower boundary condition for temperature. The simulated results have been compared against available observations. However, for such a comparison, some of the variables and parameters that are necessary are not known but can be deduced from observed data. In this way, surface temperature and thermal diffusivity of the soil, representative for the four-day period studied here, have been estimated from measured data. An optimized relation for the thickness of the viscous sublayer δ$\delta$ was found that includes the diurnal variation of the properties of the air flow. Including this approach in the model, simulated temperatures in the ground at different levels as well as temperature in the atmosphere agree very well with the observations. The applicability for a wider range of wind speeds was demonstrated by calculating daily maximum temperatures Tmax$T_{\text{max}}$. An analysis of long-term observations for the summer season at different operational weather stations consistently show a distinct maximum of Tmax$T_{\text{max}}$ for a 10‑m wind between 2–3 m/s, which can be explained by the interaction between the molecular transport of heat within the viscous sublayer of thickness δ$\delta$ and the turbulent heat flux.
Status of the CTA medium size telescope prototype
Creators: name: Baehr, Juergen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present here the status of the medium size prototype for the Cherenkov Telescope Array. The main reasons to build the prototype are the test of the steel structure, the training of various mounting operations, the test of the drive system and the test of the safety system. The essential difference between the medium size telescope prototype and a fully instrumented are that the camera is not instrumented and only a part of the mounted mirrors are optical mirrors. Insofar no high energy gamma rays can be detected by the prototype telescope. The prototype will be setup in autumn 2012 in Berlin.
description: In Proceedings of the 2012 Heidelberg Symposium on High Energy Gamma-Ray Astronomy. All CTA contributions at arXiv:1211.1840
Flare-like variability of the Mg IIλ2800Å emission line in the gamma-ray blazar 3C 454.3
Creators: name: León-Tavares, J.
name: Chavushyan, V.
name: Patiño-Álvarez, V.
name: Valtaoja, E.
name: Arshakian, T. G.
name: Popovic\altaffilmark, L. C.
name: Tornikoski, M.
name: Lobanov, A.
name: Carramiñana, A.
name: Carrasco, L.
name: Lähteenmäki, A.
name: .
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the detection of a statistically significant flare-like event in the Mg IIλ2800Å emission line of 3C 454.3 during the outburst of autumn 2010. The highest levels of emission line flux recorded over the monitoring period (2008 - 2011) coincide with a superluminal jet component traversing through the radio core. This finding crucially links the broad-emission line fluctuations to the non-thermal continuum emission produced by relativistically moving material in the jet and hence to the presence of broad-line region clouds surrounding the radio core. If the radio core were located at several parsecs from the central black hole then our results would suggest the presence of broad-line region material outside the inner parsec where the canonical broad-line region is envisaged to be located. We briefly discuss the implications of broad-emission line material ionized by non-thermal continuum on the context of virial black hole mass estimates and gamma-ray production mechanisms.
description: 7 pages, 4 figures, to appear in ApJL
Lebensdauerbeeinträchtigungen von Geräten durch Ausgleichsströme beim Betrieb im industriellen offenen DC-Netz
Creators: name: Puls, Simon
name: Austermann, Johann
name: Borcherding, Holger
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
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: Heute bietet Gleichstrom bzw. Gleichspannung gegenüber Wechselspannung weitreichende Vorteile [1]. Im Bereich der Energieversorgung wächst der DC-Anteil stetig und ist teilweise schon Stand der Technik für zum Beispiel Offshore-, Automotive- oder Datacentersysteme. Im Hinblick auf angestrebte Klimaziele bietet dabei insbesondere auch die energieeffiziente Produktion im industriellen Umfeld großes Potenzial: Weniger verlustbehaftete Wandler, leichteres Einbinden von weiteren, regenerativen Energiequellen und Speichern, höhere Ausfallsicherheiten und Spitzenlastreduktion als Teil der Netzdienlichkeit sind einige Vorteile. Außerdem bietet DC im Bereich der Antriebswechselrichter durch den Wegfall von Gleichrichtern automatisch die Möglichkeit der Rückspeisung von Bremsenergie in das Netz. Durch die DC-Kopplung von Geräten, wie Antriebswechselrichter, können dabei Ausgleichsströme zwischen den einzelnen Zwischenkreisen fließen. Diese dürfen unter keinen Umständen zur vorzeitigen Alterung oder sogar Schädigung von Nachbargeräten führen. Für das Systemkonzept vom Verbundforschungsprojekt und DC-INDUSTRIE werden dazu Verhaltensregen erforscht und in mehreren verschiedenen Modellanlagen evaluiert [2]. Der Schwerpunkt dieses Beitrags liegt auf leitungsgebundenen Störaussendungen im Frequenzbereich bis 150 kHz, den damit verbundenen Herausforderungen und Möglichkeiten zur Feststellung, sowie zur Lösung. Nach einem kurzen Einblick in DC-INDUSTRIE (ein offenes, herstellerübergreifendes industrielles DC-Netz) wird im Folgenden auf Störaussendungen fokussiert, die zur vorzeitigen Alterung von Bauteilen und damit dem Ausfall von Geräten führen können.
The emission measure distribution of impulsive phase flare footpoints
Creators: name: Graham, D. R.
name: Hannah, I. G.
name: Fletcher, L.
name: Milligan, R. O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The temperature distribution of the emitting plasma is a crucial constraint when studying the heating of solar flare footpoints. However, determining this for impulsive phase footpoints has been difficult in the past due to insufficient spatial resolution to resolve the footpoints from the loop structures, and a lack of spectral and temporal coverage. We use the capabilities of Hinode/EIS to obtain the first emission measure distributions (EMDs) from impulsive phase footpoints in six flares. Observations with good spectral coverage were analysed using a regularized inversion method to recover the EMDs. We find that the EMDs all share a peak temperature of around 8 MK, with lines formed around this temperature having emission measures peaking between 10^28 and 10^29 cm^-5, indicating a substantial presence of plasma at very high temperatures within the footpoints. An EMD gradient of EM(T) ~ T is found in all events. Previous theoretical work on emission measure gradients shows this to be consistent with a scenario in which the deposited flare energy directly heats only the top layer of the flare chromosphere, while deeper layers are heated by conduction.
Correlated magnetic noise in global networks of gravitational-wave interferometers: observations and implications
Creators: name: Thrane, Eric
name: Christensen, Nelson
name: Schofield, Robert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: One of the most ambitious goals of gravitational-wave astronomy is to observe the stochastic gravitational-wave background. Correlated noise in two or more detectors can introduce a systematic error, which limits the sensitivity of stochastic searches. We report on measurements of correlated magnetic noise from Schumann resonances at the widely separated LIGO and Virgo detectors. We investigate the effect of this noise on a global network of interferometers and derive a constraint on the allowable coupling of environmental magnetic fields to test mass motion in gravitational-wave detectors. We find that while correlated noise from global electromagnetic fields could be safely ignored for initial LIGO stochastic searches, it could severely impact Advanced LIGO and third-generation detectors.
description: 5 pages, 4 figures
title: Zum Aktuellen Thema der Arch. Inf. 10, Heft 1, 1987 "Handel". Beobachtungen zur Verbreitung frühmittelalterlicher Keramikgruppen in Südwestdeutchland
Creators: name: Gross, Uwe
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
Vlasov simulations of Langmuir Electrostatic Decay and consequences for Type III observations
Creators: name: Henri, P.
name: Califano, F.
name: Briand, C.
name: Mangeney, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The electrostatic decay enables energy transfer from a finite amplitude Langmuir to a backscattered daughter Langmuir wave and ion acoustic density fluctuations. This mechanism is thought to be a first step for the generation of type III solar radio emissions at twice the plasma frequency. The electrostatic decay is here investigated through Vlasov-Poisson simulations by considering Langmuir localized wave packets in the case Te = Tp. Simulation results are found to be in good agreement with recently reported observations from the STEREO mission of the electrostatic decay of beam-driven Langmuir waves during a type III burst.
description: 4 pages, 4 figures, Solar Wind 12
Erneuerbare Energien - Raumliche Dimensionen, neue Akteurslandschaften und planerische (Mit) Gestaltungspotenziale am Beispiel des Biogaspfades
Creators: name: Kanning, Helga
name: Buhr, Nina
name: Steinkraus, Katharina
Publisher: name: Poland : De Gruyter
Year: 2009
Subjects: subject: biogas
subject: spatial impacts
subject: players
subject: stakeholders
subject: spatial plannin
subject: land use planning
subject: regional energy / land use management
subject: Biogas
subject: Akteure
subject: Räumliche Planung
subject: Räumliche Auswirkungen
subject: Regionales Energie-/ Landnutzungsmanagement
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung

description: Die Umstellung der Energieversorgung auf nachhaltige Systeme ist eine Aufgabe historischen Ausmaßes. Sollen die Potenziale der regional verfügbaren erneuerbaren Energien optimal im nachhaltigen Sinne entwickelt werden, sind die Regionen gefordert, die Prozesse aktiv mitzugestalten, weil die Flächen knapp sind und sich schon heute Nutzungskonkurrenzen abzeichnen. Hiermit erwachsen auch für die räumliche Planung neue Herausforderungen. Am Beispiel des klimatisch und regionalökonomisch vielversprechenden Biogaspfades werden neu entstehende Wirkungszusammenhänge mit Raumnutzungen, Akteurslandschaften und Gestaltungsansätze beleuchtet sowie ein konzeptioneller Ansatz aufgezeigt, wie die räumliche Planung zukünftig mit einem Mix aus informellen und formellen Instrumenten eine nachhaltige Nutzung regional verfügbarer (Energie)Ressourcen proaktiv (mit)gestalten könnte.
(Ultra) High Pressure Homogenization for Continuous High Pressure Sterilization of Pumpable Foods – A Review
Creators: name: Georget, Erika
name: Miller, Brittany
name: Callanan, Michael John
name: Heinz, Volker
name: Mathys, Alexander
Publisher: name: Lausanne : Frontiers Media S.A.
Year: 2014
Subjects: subject: bacterial spore
subject: continuous processing
subject: food
subject: sterilization
subject: ultra high pressure homogenization
subject: Internal medicine
subject: Endocrinology
subject: Biotechnology
subject: Homogenizer
subject: Food science
subject: Homogenization (chemistry)
subject: Organoleptic
subject: Food industry
subject: Medicine
subject: Food systems
subject: Sterilization (microbiology)
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: Bacterial spores have a strong resistance to both chemical and physical hurdles and create a risk for food industry which has been tackled by applying high thermal intensity treatments to sterilize food. These strong thermal treatments lead to reduction of the organoleptic and nutritional properties of food and alternative are actively searched for. Innovative hurdles offer an alternative to inactivate bacterial spores. In particular, recent technological developments have enabled a new generation of high pressure homogenizer working at pressures up to 400 MPa and thus opening new opportunities for high pressure sterilization of foods. In this short review, we summarize the work conducted on (ultra)-high pressure homogenization (U)HPH to inactivate endospores in model and food systems. Specific attention is given to process parameters (pressure, inlet and valve temperatures). This review gathers the current state of the art and underlines the potential of UHPH sterilization of pumpable foods while highlighting the needs for future work.
Hyperquarks and generation number
Creators: name: Buchmann, Alfons J.
name: Schmid, Michael L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a model in which quarks and leptons are built up from two spin 1/2 preons as fundamental entities, a new class of fermionic bound states (hyperquarks) arises. It turns out that these hyperquarks are necessary to fulfill the 't Hooft anomaly constraint, which then links the number of fermionic generations to the number of colors and hypercolors.
description: 4 pages, corrected formatting problem in Eq.(4.6)
pyGLLE: A Python toolkit for solving the generalized Lugiato–Lefever equation
Creators: name: Melchert, Oliver
name: Demircan, Ayhan
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2021
Subjects: subject: Nonlinear partial differential equations
subject: Lugiato–Lefever equation
subject: Dissipative solitons
subject: Python
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: We present a Python toolkit for simulating the propagation dynamics of dissipative solitons in a variant of the Lugiato–Lefever equation (LLE) including dispersion terms of third and fourth order. In addition, the provided software allows to prepare initial conditions given by stationary localized solutions of the standard LLE in the anomalous group-velocity dispersion regime. Propagation scenarios for custom control parameters and initial conditions can be specified by the user via a simple class data structure. We demonstrate the implemented functionality by showing how to obtain stationary solutions of the standard LLE containing a dissipative soliton, and, demonstrating different characteristic propagation scenarios. The pyGLLE software package is open-source and released under the X11 License in a publicly available software repository.
Strukturbildung ultradünner Vanadiumoxid-Schichten bei der katalytischen Oxidation von Methanol an Rh(111)
Creators: name: Hesse, Martin
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: VOx-islands
subject: ultrathin films
subject: self organization
subject: pattern formation
subject: Rhodium
subject: Vanadium
subject: VOx-Inseln
subject: ultradünne Schichten
subject: Methanol-Oxidation
subject: PEEM
subject: LEED
subject: AES
subject: QMS
subject: XPS
subject: Selbstorganisation
subject: Musterbildung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The catalytic model system Rh(111)/VOx/CH3OH + O2 was investigated to study the interactions of metal-oxide-supported catalysts under reaction conditions. Under reaction conditions macroscopic pattern formation causing the development of stripes and circular islands in a self organization process was observed.
Recycling of Metallurgical Residues by a Combined Process of Chemical Modification, Carbothermic Reduction and Phase Modification
Creators: name: Doschek-Held, Klaus
name: Krammer, Anna
name: Steindl, Florian Roman
name: Gatschlhofer, Christoph
name: Wohlmuth, Dominik
Publisher: name: Zenodo
Year: 2023

description: Presentation
Twisted Alexander invariants detect trivial links
Creators: name: Friedl, Stefan
name: Vidussi, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: It follows from earlier work of Silver-Williams and the authors that twisted Alexander polynomials detect the unknot and the Hopf link. We now show that twisted Alexander polynomials also detect the trefoil and the figure-8 knot, that twisted Alexander polynomials detect whether a link is split and that twisted Alexander modules detect trivial links.
description: 11 pages
Identification of active slip systems in polycrystals by Slip Trace -- Modified Lattice Rotation Analysis (ST-MLRA)
Creators: name: Yang, Biaobiao
name: Shi, Chenying
name: Lai, Ruilin
name: Shi, Dongfeng
name: Guan, Dikai
name: Zhu, Gaoming
name: Cui, Yujie
name: Xie, Guoqiang
name: Li, Yunping
name: Chiba, Akihiko
name: LLorca, Javier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A simple and versatile strategy, denominated Slip Trace - Modified Lattice Rotation Analysis (ST-MLRA), is presented to enable the identification of the active slip systems in polycrystalline alloys from surface information. The slip plane trace orientation is used to define the potential active slip planes while the actual slip direction within the active slip plane is obtained from the grain rotation, as indicated by the stretching of the trace of the grain orientation in the pole figure as a result of deformation. Examples of application of the strategy in a HCP Mg alloy are presented for illustration. They show that the strategy is simple to implement and allows to identify the active slip system(s) in each grain.
title: Relative expressiveness of calculi for reversible concurrency
Creators: name: Medić, Doriana
Publisher: name: IMT Alti Studi Lucca
Year: 2019

description: The main motivations for studying reversible computing comes
 from the promise that reversible computation (and circuits)
 would lead to more energy efficient computers. Besides circuits, nowadays, reversibility is studied in many other domains. This thesis studies the expressiveness of the causalconsistent reversibility (a well-known notion of reversibility
 for concurrent systems) in CCS and π-calculus.
 First, we show that by means of encodings, LTSs of Reversible
 CCS (introduced by Danos and Krivine) and CCS with Communications Keys (introduced by Phillips and Ulidowski) are
 isomorphic up to some structural transformations of processes.
 An explanation of this result is the existence of one causality
 notion in CCS.
 In π-calculus, two forms of dependences between the actions
 give rise to different causal semantics. The main difference is
 how the parallel extrusion of the same name is treated. We
 consider three approaches to parallel extrusion problem represented with causal semantics introduced by Boreale et al;
 Crafa et al; and Cristescu et al. To study them, we devise a
 framework for reversible π-calculi, parametric with respect to
 the data structure used to keep track of information about a
 name extrusions. We show that reversibility induced by our
 framework is causally-consistent and prove causal correspondence between the semantics given by Boreale et al, and the
 corresponding instance of the framework.
Study of two-neutron radioactivity in the decay of 26O
Creators: name: Kohley, Z.
name: Baumann, T.
name: Bazin, D.
name: Christian, G.
name: DeYoung, P. A.
name: Finck, J. E.
name: Frank, N.
name: Jones, M.
name: Lunderberg, E.
name: Mosby, S.
name: Nagi, T.
name: Smith, J. K.
name: Snyder, J.
name: Spyrou, A.
name: Thoennessen, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of 26O -> 24O+n+n was examined as it had been predicted to have an appreciable lifetime due to the unique structure of the neutron-rich oxygen isotopes. The half-life of 26O was extracted as 4.5^{+1.1}_{-1.5}(stat.) +/- 3 (sys.) ps. This corresponds to 26O having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity.
description: Accepted to Phys. Rev. Lett
Kunststoff als Werkzeugwerkstoff für das Tiefziehen von Feinblechen
Creators: name: Frank, Christian
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Kostengünstige Konstruktion
subject: Kunststoff
subject: Mittelserienfertigung
subject: Tiefziehwerkzeug
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: [no abstract]
Ultracold atom interferometry in space
Creators: name: Lachmann, Maike D.
name: Ahlers, Holger
name: Becker, Dennis
name: Dinkelaker, Aline N.
name: Grosse, Jens
name: Hellmig, Ortwin
name: Müntinga, Hauke
name: Schkolnik, Vladimir
name: Seidel, Stephan T.
name: Wendrich, Thijs
name: Wenzlawski, André
name: Carrick, Benjamin
name: Gaaloul, Naceur
name: Lüdtke, Daniel
name: Braxmaier, Claus
name: Ertmer, Wolfgang
name: Krutzik, Markus
name: Lämmerzahl, Claus
name: Peters, Achim
name: Schleich, Wolfgang P.
name: Sengstock, Klaus
name: Wicht, Andreas
name: Windpassinger, Patrick
name: Rasel, Ernst M.
Publisher: name: London : Nature Publishing Group
Year: 2021
Subjects: subject: Atom optics
subject: Atomic and molecular interactions with photons
subject: Matter waves and particle beams
subject: Quantum metrology
subject: Quantum optics
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. Here we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting on a sounding rocket. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the condensates but also allow us to measure differential forces. Our work marks the beginning of matter-wave interferometry in space with future applications in fundamental physics, navigation and earth observation.
Joint Precoding and Multivariate Backhaul Compression for the Downlink of Cloud Radio Access Networks
Creators: name: Park, Seok-Hwan
name: Simeone, Osvaldo
name: Sahin, Onur
name: Shamai, Shlomo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This work studies the joint design of precoding and backhaul compression strategies for the downlink of cloud radio access networks. In these systems, a central encoder is connected to multiple multi-antenna base stations (BSs) via finite-capacity backhaul links. At the central encoder, precoding is followed by compression in order to produce the rate-limited bit streams delivered to each BS over the corresponding backhaul link. In current state-of-the-art approaches, the signals intended for different BSs are compressed independently. In contrast, this work proposes to leverage joint compression, also referred to as multivariate compression, of the signals of different BSs in order to better control the effect of the additive quantization noises at the mobile stations (MSs). The problem of maximizing the weighted sum-rate with respect to both the precoding matrix and the joint correlation matrix of the quantization noises is formulated subject to power and backhaul capacity constraints. An iterative algorithm is proposed that achieves a stationary point of the problem. Moreover, in order to enable the practical implementation of multivariate compression across BSs, a novel architecture is proposed based on successive steps of minimum mean-squared error (MMSE) estimation and per-BS compression. Robust design with respect to imperfect channel state information is also discussed. From numerical results, it is confirmed that the proposed joint precoding and compression strategy outperforms conventional approaches based on the separate design of precoding and compression or independent compression across the BSs.
description: Submitted to IEEE Transactions on Signal Processing
Alonopsis aureolata Doolittle 1912
Creators: name: Sinev, Artem Y.
name: Atroschenko, Margarita M.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Branchiopoda
Diplostraca
Alonopsis
Alonopsis aureolata

description: Alonopsis aureolata Doolittle, 1912
 Doolittle, 1912: 561–565, Pls. 42–43; Kubersky, 1977: 656–663, figs 3–20 (americana).
 Type locality. Lake Sunapee, Sullivan County, New Hampshire, USA.
 Holotype: immature female on a slide, U. S. National Museum (cat. 4# 44366), from Lake Sunapee, Sullivan County, New Hampshire, USA collected 22.04.1910.
 Material. 37 parthenogenetic females from Sebago Lake, Maine, USA, 0 9.07.1966, coll. D. G. Frey, National Museum of Natural History (Washington DC, USA), Frey’s collection sample 1912.
 Description. Parthenogenetic female. Body (Fig. 6 A, C, E–F) height-length ratio about 0.59–0.63. Valves (Fig. 6 G–H) and head as for genus. Head shield (Fig. 7 A) with very short, broadly rounded rostrum. Head pores as for genus (Fig. 7 B), IP/PP ratio about 1.5–2 in adult. Labrum as for genus (Fig. 7 C–D). Thorax, abdomen and postabdomen (Fig. 6 B, D, I–J) as for genus, same as in the previous species.
Antennule (Fig. 7 F), antenna (Fig. 7 D) and limb I (Fig 7 G–H) same as in the previous species. Limb II (Fig. 7 I) with scrapers 7 and 8 of similar size and shape, armed with 12–15 long, thick denticles. Limbs III (Fig. 7 J–L) and limb IV (Fig. 8 A–C) same as in the previous species. Limb V (Fig. 8 D) as for genus, incursion between exopodite lobes as obtuse angle. Limb VI (Fig. 8 E) with clusters of marginal setules in studied specimens of different proportions compared to the previous species.
 Male. According to description of Kubersky (1977), body shape is similar to that of the previous species. Postabdomen (Fig. 8 F) narrowing distally, but curved, with irregularly curved ventral margin and concave postanal margin, postanal angle defined, obtuse. Position of sperm ducts, armament of postabdomen, postabdominal claws similar to the previous species. Descriptions and drawings of antennule and limb I in description of Kubersky (1977) are somewhat vague. These structures appear to be similar to these of the previous species, but some differences possibly remain overlooked.
 Size. In studied material, length of female of juvenile instar I— 0.41–0.46 mm; juvenile instar II— 0.50–0.57 mm; adult female— 0.62–0.89 mm.
description: Published as part of Sinev, Artem Y. & Atroschenko, Margarita M., 2011, Revision of the genus Alonopsis Sars, 1862 and its position within Aloninae (Cladocera: Anomopoda: Chydoridae), pp. 1-17 in Zootaxa 2800 on pages 13-14, DOI: 10.5281/zenodo.203597
title: Alterations at the ditches of the Michelsberg earthwork from Bruchsal »Aue« (Lkr. Karlsruhe) – preliminary report considering the analysis
Creators: name: Regner-Kamlah, Birgit
Publisher: name: University Library Heidelberg
Year: 2016

description: Die Dokumentation des annähernd vollständig untersuchten Michelsberger Erdwerks von Bruchsal »Aue« erlaubt den Nachweis zahlreicher Umbauten und Grabenphasen. Die Doppelgräben waren in früheren Zeiten zusätzlich zu den heute im ersten Planum feststellbaren 15 Toren an mehreren Stellen durch später entfernte Durchlässe unterbrochen. Der äußere Graben zeigt in weiten Teilen zwei bis drei über- bzw. nebeneinander eingetiefte Grabenphasen. Ein Quergraben wurde an den als zweiten eingebauten äußeren Graben gesetzt. Die Zuordnung der Keramik zeigt, dass auf der Sohle des inneren und äußeren Grabens Formen der Stufen MK I/II, II früh, II klassisch und II spät lagen. Hier verbergen sich möglicherweise mehrere Nutzungsphasen, die sich aber bisher nicht trennen lassen. Während dieser Zeit wurden einige der älteren Erdbrücken entfernt. Die mVerfüllschichten des eingebauten zweiten äußeren Grabens sind besser zu differenzieren: Auf seiner Sohle befanden sich vorwiegend MK III-Formen, und in seinen oberen Straten, die teilweise zur dritten Grabenphase gehören, lagen MK IV-Formen. Der Quergraben enthielt ebenfalls MK IV-Keramik. In den oberen Schichten des inneren Grabens fanden sich Abfallschichten mit MK III- und sehr wenigen MK IVKeramikfragmenten.
description: The documentation of the almost completely examined Michelsberg earthwork from Bruchsal »Aue« gives evidence of numerous alterations and ditch phases. The double ditches were not only interrupted by the 15 gates which were established in the first planum, but in earlier times also at several places which were removed later. The outer ditch shows two to three phases, which were dug out above and next to each other. A transverse ditch was added to the outer ditch of the second phase. The identification of the pottery shows remainders of shapes of the periods MK I/II, II early, II classical and II late on the floor of the inner and outer ditch. This might indicate several phases of usage, which so far cannot be distinguished from each other. On the floor, there were mainly MK III-shapes, whereas in the upper layers partly belonging to the third ditch phase, MK IV-shapes were found. The transverse ditch also contained MK IV-pottery. In the upper layers of the inner ditch, strata of waste with MK III- and very few MK IV-pottery fragments were discovered.
title: Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion for City of Ketchikan Removal of Berth II Rock Pinnacle Project
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; AKRO-2019-00553
On the splitting of a normalizer of a torus in symplectic groups
Creators: name: Galt, A. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: In this paper we find all symplectic groups and their maximal tori in which normalizer of a torus is split over the torus.
description: in Russian
title: Reinitiated Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultationfor the Salmon-Challis National Forest’s Challis Creek Road Repair Project, HUC#1706020117 - Challis Creek, Custer County, Idaho
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-00430
Resolved Depletion Zones and Spatial Differentiation of N2H+ and N2D+
Creators: name: Tobin, John J.
name: Bergin, Edwin A.
name: Hartmann, Lee
name: Lee, Jeong-Eun
name: Maret, Sebastien
name: Myers, Phillip C.
name: Looney, Leslie W.
name: Chiang, Hsin-Fang
name: Friesen, Rachel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study on the spatial distribution of N2D+ and N2H+ in thirteen protostellar systems. Eight of thirteen objects observed with the IRAM 30m telescope show relative offsets between the peak N2D+ (J=2-1) and N2H+ (J=1-0) emission. We highlight the case of L1157 using interferometric observations from the Submillimeter Array and Plateau de Bure Interferometer of the N2D+ (J=3-2) and N2H+ (J=1-0) transitions respectively. Depletion of N2D+ in L1157 is clearly observed inside a radius of ~2000 AU (7") and the N2H+ emission is resolved into two peaks at radii of ~1000 AU (3.5"), inside the depletion region of N2D+. Chemical models predict a depletion zone in N2H+ and N2D+ due to destruction of H2D+ at T ~ 20 K and the evaporation of CO off dust grains at the same temperature. However, the abundance offsets of 1000 AU between the two species are not reproduced by chemical models, including a model that follows the infall of the protostellar envelope. The average abundance ratios of N2D+ to N2H+ have been shown to decrease as protostars evolve by Emprechtinger et al., but this is the first time depletion zones of N2D+ have been spatially resolved. We suggest that the difference in depletion zone radii for N2H+ and N2D+ is caused by either the CO evaporation temperature being above 20 K or an H2 ortho-to-para ratio gradient in the inner envelope.
description: Accepted to ApJ. 44 pages 13 Figures
title: Revisions to the Incidental Take Statement and Essential Fish Habitat Conservation Recommendations of the Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Lolo Insect and Disease Project, Lolo Creek, HUC 17060306, Idaho County, Idaho (One Project)
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-00351
title: Warriors, fat birds, and horned horses? A decorated saddle fitting from Mitino (obl. Kaliningrad)
Creators: name: Skvorzov, Konstantin
name: Pesch, Alexandra
Publisher: name: University Library Heidelberg
Year: 2016

description: Im Rahmen großflächiger Ausgrabungen auf dem russischen Gräberfeld Mitino bei Kaliningrad wurden Fragmente eines bisher einzigartigen, pressblechverzierten Pferdesattels geborgen. Seine Figuren und Muster datieren ihn gemeinsam mit Beifunden aus derselben Bestattung in die Völkerwanderungszeit. Gute Parallelen kennen die Stempel vorwiegend aus dem skandinavischen Raum. Hier finden sich Vorbilder für all seine Darstellungen. Die Bilder belegen aber nicht nur lose, zufällige Kontakte zwischen diesen Regionen. Als lokale Rezeption fremder Einflüsse sind sie auch ein Zeichen kultureller, vielleicht sogar politischer Verbindungen und Ausdruck des Wunsches nach internationalen Beziehungen. So zeugt der Sattel aus Mitino gemeinsam mit anderen Funden wie etwa litauischen Trinkhornbeschlägen davon, dass bereits in der Mitte des ersten Jahrtausends die Regionen um die Ostsee kulturell zusammenwuchsen.
description: In the context of large-scale excavations at the Russian cemetery Mitino near Kaliningrad fragments of an as yet unique horse saddle with decorated sheet metal have been recovered. Its figures and patterns date it to the Migration Period, as do other finds. Convincing parallels to the stamps are mainly known from the Scandinavian region, where there are examples for nearly all its representations. However, the images do not only mirror random contacts between these regions. As a local reception of foreign influences, they are also evidence for cultural, perhaps even political connections, even an expression of the desire for international relations. Thus, together with other finds such as Lithuanian drinking horn fittings, the saddle of Mitino proves the fact that in as early as the midst first millennium, the regions around the Baltic Sea culturally grew together.
title: Types of Caracalla and Geta portraits on Roman Imperial coins – the definition of a new type of Cesar for Caracalla and a new type of Augustus for Geta
Creators: name: Pangerl, Andreas
Publisher: name: University Library Heidelberg
Year: 2016

description: Die vorliegende Analyse der Porträts von Caracalla und Geta auf römischen Reichsprägungen definiert neun Bildnistypen für Caracalla und sieben für den jüngeren Bruder Geta, jeweils von ihrer Ernennung zum Caesar bis zu ihrer
Ermordung. Diese erfüllen die Kriterien offizieller Bildnistypen wie klare Unterscheidbarkeit, Überlieferung in zahlreichen Kopien sowie zeitlich einzugrenzendes Auftreten. Die Analyse des Münzmaterials zeigt einen neuen Porträttyp des Caracalla als Caesar (Typ 1), mit kurzen glatten Haaren und kindlichen Gesichtszügen, und für Geta einen neuen Porträttyp als Augustus (Typ 7), mit langem gegabelten Bart und deutlicher Ähnlichkeit zum Vater Septimius Severus. Während zu Lebzeiten des Vaters die Porträts der beiden Brüder bis zur Austauschbarkeit angeglichen wurden, wurde dieser Geta Typ 7 wohl von Geta und seiner Partei gezielt im Machtkampf zwischen den Brüdern eingesetzt
description: The presented analysis of the Caracalla and Geta portraits on Roman Imperial coins results in the definition of nine pictorial types for Caracalla and seven for his younger brother Geta, in both cases spanning a period between their enthronement and their assassination. They meet the criteria of official pictorial types such as clear differentiation, the existence of numerous copies and chronologically limited occurrence. The analysis of the coins provides two new
portrait types: Caracalla as Cesar (type 1) with short straight hair and child-like physiognomy, and Geta as Augustus (type 7) with a long forked beard and clear resemblance to his father Septimius Severus. During the lifetime of the father the portraits of the two brothers were equalised to an exchangeable extent. Then, Geta type 7 was used by Geta and his followers in the struggle for power between the two brothers.
Boundary conditions control for a Shallow-Water model
Creators: name: Kazantsev, Eugene
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A variational data assimilation technique was used to estimate optimal discretization of interpolation operators and derivatives in the nodes adjacent to the rigid boundary. Assimilation of artificially generated observational data in the shallow-water model in a square box and assimilation of real observations in the model of the Black sea are discussed. It is shown in both experiments that controlling the discretization of operators near a rigid boundary can bring the model solution closer to observations as in the assimilation window and beyond the window. This type of control allows also to improve climatic variability of the model.
description: arXiv admin note: substantial text overlap with arXiv:1112.4293, arXiv:1112.3503, arXiv:0905.4709
Agricultural uses reshape soil C, N, and P stoichiometry in subtropical ecosystems
Creators: name: Liu, H.Y.
name: Zhou, J.G.
name: Shen, Jianlin
name: Li, Yan
name: Li, Yuyuan
name: Ge, Tida
name: Guggenberger, Georg
name: Wu, Jinshui
Publisher: name: Göttingen : Copernicus GmbH
Year: 2016
Subjects: subject: Ecosystem
subject: Agriculture
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Subtropics
subject: Elevation
subject: Stoichiometry
subject: Ecology
subject: FOS: Biological sciences
subject: Topsoil
subject: Soil carbon
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: Changes in elemental stoichiometry, in most cases, attributed to land use alterations may cause vital impacts on the nutrient status and environmental quality of ecosystems. Here, we studied the stoichiometry and spatial distribution patterns of soil organic carbon (SOC), total soil nitrogen (TN), and total soil phosphorus (TP) in topsoil (0–20 cm; 1207 samples) ecosystems in a representative catchment of subtropical hilly region of China. Its main land uses are woodland, paddy fields, and tea farmlands. Data obtained show that the medians of SOC, TN, and TP were 16.97, 1.83, and 0.52 g kg−1, and medians of C : N, C : P, and N : P molar ratios were 10.0, 78.6 and 7.9, respectively. The best-fitting model were exponential models for SOC, TN, TP, C : N, and N : P, while for C : P was Gaussian model. The nugget values for SOC, TN, TP, C : N, C : P, and N : P were 1.0, 0.06, 0.01, 6.0, 56.0, and 1.0, respectively. And their ranges were 750, 1290, 570, 2970, 810, and 720, respectively. The nugget-to-sill ratio (NSR) for SOC, TN, TP, C : P, and N : P were 2.7 %, 14.3 %, 20.0 %, 4.0 %, and 10.0 %, respectively, and showed strong spatial autocorrelation. While C:N molar ratios had a moderate spatial correlation, with NSR of 49.95 %. Spatial analyses showed that agriculture derived land use changes alter largely the spatial distribution and stoichiometry of C, N, and P elements in individual landscapes and entire catchment. For woodland ecosystems, topography factors (elevation and slope) determined the elemental spatial distributions and stoichiometry (C : N, C : P, and N : P molar ratios). However, this status had been merged in agricultural ecosystems, due to the relative similarity in cropping and managing (N and P inputs through fertilization). Agriculture significantly increases N, and P contents but narrows C : N, C : P, and N : P molar ratios. Thus, our findings demonstrate that agricultural activities can affect carbon and nutrient stoichiometry at the catchment scale.
title: Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat ResponsePhillips 66 Fender Pile ReplacementWillamette River, River Mile 7.8 (HUC 1709001202)Multnomah County, Oregon(Corps No.: NWP-2007-92-8)
titleType: Other
Creators: name: United States. National Marine Fisheries Service,
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: WCRO-2019-01598