cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Wärmeübergang bei der Absorption ammoniakreichen Dampfes durch wässrige Lösung im Plattenwärmeübertrager
title: Heat transfer during the absorption of ammonia-rich vapor by aqueous solution inside a plate heat exchanger
titleType: AlternativeTitle
Creators: name: Markmann, Benjamin
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Heat Transfer
subject: High Temperature Heat Pump
subject: Ammonia/Water
subject: Wärmeübergang
subject: Absorption
subject: Hochtemperatur-Wärmepumpe
subject: Ammoniak/Wasser
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Teil eines Wärmepumpenprozesses ist immer auch die Schnittstelle, an der die Wärme auf hohem Temperaturniveau wieder abgegeben wird. Als solche werden immer öfter Plattenwärmeübertrager eingesetzt, die gegenüber Rohrbündelwärmeübertragern vor allem kompakter und kostengünstiger sind. Es werden in der hier vorgestellten Versuchsanlage hauptsächlich Standardkomponenten eingesetzt, wodurch die Investitionskosten möglichst niedrig gehalten werden. Unter Verwendung des natürlichen Arbeitsstoffpaares Ammoniak und Wasser stellt die Kompressions-Wärmepumpe mit Lösungskreislauf ein vielversprechendes Konzept für typische industrielle Anwendungsszenarien dar. Der Einsatz eines Plattenwärmeübertragers als Fallfilm-Absorber ist bisher noch wenig untersucht und stellt daher den Inhalt der vorliegenden Arbeit dar. Denn der Absorber-Wärmeübertrager wurde generell in vorhergehenden Arbeiten als leistungsbestimmende Komponente ausgemacht und es besteht Bedarf an verlässlichen Auslegungskorrelationen für den Wärmeübergang und den damit verbundenen Druckverlust. Weiterhin wird unter Verwendung literaturbekannter Berechnungsansätze ein Simulationsmodell entwickelt, dessen Berechnungsergebnisse den experimentellen Daten gegenübergestellt werden.
description: The interface at which heat is transferred to the heat sink at the high temperature level is always part of a heat pump process. Increasingly often plate heat exchangers are utilized as such being more compact and cost efficient than shell and tube heat exchangers. Keeping the investment cost low is one of the main goals of this project that includes the setup of a test rig constructed of mainly standard components. Using the combination of the natural working fluids ammonia and water the hybrid absorption compression heat pump concept is well suited for typical industrial applications. Since the implementation of a plate heat exchanger as a falling film absorber is yet to be investigated thoroughly it is the main purpose of this work. In general, the absorber has been determined as one of the key components of the setup and there is a need for reliable correlations to predetermine heat transfer and pressure loss. Furthermore, a simulation model is developed using calculation approaches available in the literature. The results are then compared to the experimental data.
Quercus lanuginosa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: Q. lanuginosa X petraea (= Q. Streimii Heuffel) -Anscheinend sehr verbreitet. -l: Gegend von Monthey (Oberli); Gegend von Salvan und Les Marecottes, mehrfach (Coquoz, Maillefer); La Bätiaz (Sulger); Ravoire (Villaret); Outre-Rhone (Garns). - 2: Gegend von Fully, vielfach (Thellung, Garns). - 3: Niouc (Sulger); Les Pontis (idem); Les Gietes bei Pinsec (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Escaping particle fluxes in the atmospheres of close-in exoplanets. ii. reduced mass loss rates and anisotropic winds
Creators: name: Guo, J. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We constructed a multi-fluid two-dimensional hydrodynamic model with detailed radiative transfer to depict the escape of particles. We found that the tidal forces supply significant accelerations and result in anisotropic winds. An important effect of the tidal forces is that it severely depresses the outflow of particles near the polar regions. As a consequence, most particles escape the surface of the planet from the regions of low-latitude. Comparing the tidal and non-tidal locking cases, we found that their optical depths are very different so that the flows also emerge with a different pattern. In the case of the non-tidal locking, the radial velocities at the base of the wind are higher than the meridional velocities. However, in the case of tidal locking, the meridional velocities dominate the flow at the base of the wind, and they can transfer effectively mass and energy from the day sides to the night sides. Further, we also found that the differences of the winds show middle extent at large radii. It expresses that the structure of the wind at the base can be changed by the two-dimensional radiative transfer due to large optical depths, but the extent is reduced with an increase in radius. Because the escape is depressed in the polar regions, the mass loss rate predicted by the non-tidal locking model, in the order of magnitude of $10^{10}$ g s$^{-1}$, is a factor of 2 lower than that predicted by one-dimensional hydrodynamic model. The results of tidal locking show that the mass loss rate is decreased a order of magnitude, only 4.3$\times$ $10^{9}$ g s$^{-1}$, due to large optical depths on the night side. We also found that the distributions of hydrogen atoms show clear variations from the day side to night side, thus the origin of the excess absorption in Ly $α$ should be reexamined by using multi-dimensional hydrodynamic models.
description: 41 pages, 13figures,accepted by ApJ
Constraints on the Sunyaev-Zel'dovich signal from the Warm Hot Intergalactic Medium from WMAP and SPT data
Creators: name: Genova-Santos, Ricardo
name: Suarez-Velasquez, Isabel
name: Atrio-Barandela, Fernando
name: Muecket, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The fraction of ionized gas in the Warm Hot Intergalactic Medium induces temperature anisotropies on the Cosmic Microwave Background similar to those of clusters of galaxies. The Sunyaev-Zel'dovich anisotropies due to these low density, weakly non-linear, baryon filaments can not be distinguished from that of clusters using frequency information, but they can be separated since their angular scales are very different. To determine the relative contribution of the WHIM SZ signal to the radiation power spectrum of temperature anisotropies, we explore the parameter space of the concordance LCDM model using Monte Carlo Markov Chains and the Wilkinson Microwave Anisotropy Probe 7yr and South Pole Telescope data. We find marginal evidence of a contribution by diffuse gas, with amplitudes of A_WHIM=10-20 muK^2, but the results are also compatible with a null contribution from the WHIM, allowing to set an upper limit of A_WHIM < 43 muK^2 (95.4% C.L.). The signal produced by galaxy clusters remains at A_CL=4.5 muK^2, a value similar to what is obtained when no WHIM is included. From the measured WHIM amplitude we constrain the temperature-density phase diagram of the diffuse gas, and find it to be compatible with numerical simulations. The corresponding baryon fraction in the WHIM varies from 0.43 to 0.47, depending on model parameters. Planck data could set tighter constraints on the temperature-density relation.
description: Accepted for publication in MNRAS. 9 pages, 5 figures
Quercus lanuginosa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: Q. lanuginosa X petraea X Robur - l: Miex, 665m (Villaret); ob Collonges (Garns). - 2: Jeur-Brülee obFully (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Spin diffusion in one-dimensional classical Heisenberg mode
Creators: name: Bagchi, Debarshee
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The problem of spin diffusion is studied numerically in one-dimensional classical Heisenberg model using a deterministic odd even spin precession dynamics. We demonstrate that spin diffusion in this model, like energy diffusion, is normal and one obtains a long time diffusive tail in the decay of autocorrelation function (ACF). Some variations of the model with different coupling schemes and with anisotropy are also studied and we find normal diffusion in all of them. A systematic finite size analysis of the Heisenberg model also suggests diffusive spreading of fluctuation, contrary to previous claims of anomalous diffusion.
description: 4 pages, 7 eps figures
Modeling DNA Dynamics by Path Integrals
Creators: name: Zoli, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Complementary strands in DNA double helix show temporary fluctuational openings which are essential to biological functions such as transcription and replication of the genetic information. Such large amplitude fluctuations, known as the breathing of DNA, are generally localized and, microscopically, are due to the breaking of the hydrogen bonds linking the base pairs (\emph{bps}). I apply imaginary time path integral techniques to a mesoscopic Hamiltonian which accounts for the helicoidal geometry of a short circular DNA molecule. The \emph{bps} displacements with respect to the ground state are interpreted as time dependent paths whose amplitudes are consistent with the model potential for the hydrogen bonds. The portion of the paths configuration space contributing to the partition function is determined by selecting the ensemble of paths which fulfill the second law of thermodynamics. Computations of the thermodynamics in the denaturation range show the energetic advantage for the equilibrium helicoidal geometry peculiar of B-DNA. I discuss the interplay between twisting of the double helix and anharmonic stacking along the molecule backbone suggesting an interesting relation between intrinsic nonlinear character of the microscopic interactions and molecular topology.
description: International Conference on Mathematical Modeling in Physical Sciences September 3-7, 2012, Budapest, Hungary
Paratimea camelus Morrow & Cárdenas & Boury-Esnault & Picton & Mccormack & Soest & Collins & Redmond & Maggs & Sigwart & Allcock 2019, COMB. NOV.
Creators: name: Morrow, Christine
name: Cárdenas, Paco
name: Boury-Esnault, Nicole
name: Picton, Bernard
name: Mccormack, Grace
name: Soest, Rob Van
name: Collins, Allen
name: Redmond, Niamh
name: Maggs, Christine
name: Sigwart, Julia
name: Allcock, Louise A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Axinellida
Stelligeridae
Paratimea
Paratimea camelus

description: PARATIMEA CAMELUS (VAN SOEST, 2017) COMB. NOV.
Hemiasterella camelus Van Soest, 2017: pp. 174–176, fig. 109a– e, original description.
Material examined: Holotype RMNH Por. 9924, S u r i n a m e, ‘L u y m e s O. C.P. S.I I ’ G u y a n a S h e l f Expedition, station M97, 7°18.498′N, 54°.10.002′W, depth 130 m, bottom coarse sand, 16 April 1969.
DNA sequences: We sequenced the CO1 Folmer fragment from the holotype (GenBank accession no. MK096539).
Remarks: The CO1 gene tree (Supporting Information, Fig. S4) shows Paratimea camelus clustering closely with Paratimea oxeata, inside Stelligeridae, and the pairwise identity matrix (Supporting Information, Fig.S6) shows 99.85% similarity between the two species. A re-examination of the holotype found a raspailiid surface architecture, typical of many stelligerids. The smaller oxyspherasters reported by Van Soest (2017; fig. 109e) are considered to be contaminants, because we did not find any in our spicule preparations or tissue section. These asters are very different from those found in other Stelligeridae and are likely to be contamination from a tethyid sponge.
description: Published as part of Morrow, Christine, Cárdenas, Paco, Boury-Esnault, Nicole, Picton, Bernard, Mccormack, Grace, Soest, Rob Van, Collins, Allen, Redmond, Niamh, Maggs, Christine, Sigwart, Julia & Allcock, Louise A., 2019, Integrating morphological and molecular taxonomy with the revised concept of Stelligeridae (Porifera: Demospongiae), pp. 31-81 in Zoological Journal of the Linnean Society 187 on page 46
Micro-optical Realization of Arrays of Selectively Addressable Dipole Traps: A Scalable Configuration for Quantum Computation with Atomic Qubits
Creators: name: Dumke, R.
name: Volk, M.
name: Müther, T.
name: Buchkremer, F.B.J.
name: Birkl, G.
name: Ertmer, Wolfgang
Publisher: name: American Physical Society
Year: 2002
Subjects: subject: Atomic physics
subject: Data processing
subject: Electron traps
subject: Encoding (symbols)
subject: Ground state
subject: Logic gates
subject: Microoptics
subject: Optical systems
subject: Photons
subject: Atomic qubits
subject: Quantum computing
subject: Quantum theory
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We experimentally demonstrate novel structures for the realization of registers of atomic qubits: We trap neutral atoms in one- and two-dimensional arrays of far-detuned dipole traps obtained by focusing a red-detuned laser beam with a microfabricated array of microlenses. We are able to selectively address individual trap sites due to their large lateral separation of 125 μm. We initialize and read out different internal states for the individual sites. We also create two interleaved sets of trap arrays with adjustable separation, as required for many proposed implementations of quantum gate operations.
Gerdes and Loudon Wainwright
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2020
Subjects: Art--Exhibitions
Art, Russian
Modernism (Art)
Jewish artists

description: 1:00-14:00 George Gerdes and Loudon Wainwright III live in 1972; 14:00-end, Audio guide for exhibition about Marc Chagall
On the critical behaviour of the integrable q-deformed OSp(3|2) superspin chain
Creators: name: Frahm, Holger
name: Hobuß, Konstantin
name: Martins, Márcio J.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2019
Subjects: subject: superalgebra
subject: integrable chain spectrum
subject: Bethe ansatz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This paper is concerned with the investigation of the massless regime of an integrable spin chain based on the quantum group deformation of the OSp(3|2) superalgebra. The finite-size properties of the eigenspectra are computed by solving the respective Bethe ansatz equations for large system sizes allowing us to uncover the low-lying critical exponents. We present evidences that critical exponents appear to be built in terms of composites of anomalous dimensions of two Coulomb gases with distinct radii and the exponents associated to Z(2) degrees of freedom. This view is supported by the fact that the S=1 XXZ integrable chain spectrum is present in some of the sectors of our superspin chain at a particular value of the deformation parameter. We find that the fine structure of finite-size effects is very rich for a typical anisotropic spin chain. In fact, we argue on the existence of a family of states with the same conformal dimension whose lattice degeneracies are apparently lifted by logarithmic corrections. On the other hand we also report on states of the spectrum whose finite-size corrections seem to be governed by a power law behaviour. We finally observe that under toroidal boundary conditions the ground state dependence on the twist angle has two distinct analytical structures.
Sasakian quiver gauge theories and instantons on cones over round and squashed seven-spheres
Creators: name: Geipel, Jakob C.
name: Lechtenfeld, Olaf
name: Popov, Alexander D.
name: Szabo, Richard J.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2019
Subjects: subject: seven-spheres
subject: Sasaki-Einstein structure
subject: Calabi-Yau cones
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study quiver gauge theories on the round and squashed seven-spheres, and orbifolds thereof. They arise by imposing G-equivariance on the homogeneous space G/H=SU(4)/SU(3) endowed with its Sasaki-Einstein structure, and G/H=Sp(2)/Sp(1) as a 3-Sasakian manifold. In both cases we describe the equivariance conditions and the resulting quivers. We further study the moduli spaces of instantons on the metric cones over these spaces by using the known description for Hermitian Yang-Mills instantons on Calabi-Yau cones. It is shown that the moduli space of instantons on the hyper-Kähler cone can be described as the intersection of three Hermitian Yang-Mills moduli spaces. We also study moduli spaces of translationally invariant instantons on the metric cone R 8 /Z k over S 7 /Z k .
Feasible homopolar dynamo with sliding liquid-metal contacts
Creators: name: Priede, Jānis
name: Avalos-Zúñiga, Raúl
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a feasible homopolar dynamo design consisting of a flat, multi-arm spiral coil, which is placed above a fast-spinning metal ring and connected to the latter by sliding liquid-metal electrical contacts. Using a simple, analytically solvable axisymmetric model, we determine the optimal design of such a setup. For small contact resistance, the lowest magnetic Reynolds number, Rm~34.6, at which the dynamo can work, is attained at the optimal ratio of the outer and inner radii of the rings Ri/Ro~0.36 and the spiral pitch angle 54.7 degrees. In a setup of two copper rings with the thickness of 3 cm, Ri=10 cm and Ro=30 cm, self-excitation of the magnetic field is expected at a critical rotation frequency around 10 Hz.
description: 5 pages, 4 figures, revised version to appear in Phys. Lett. A
Skyrme and Faddeev models in the low-energy limit of 4d Yang–Mills–Higgs theories
Creators: name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2019
Subjects: subject: Skyrme and Faddeev model
subject: Yang–Mills–Higgs theories
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Firstly, we consider U(Nc) Yang–Mills gauge theory on R3,1 with Nf>Nc flavours of scalar fields in the fundamental representation of U(Nc). The moduli space of vacua is the Grassmannian manifold Gr(Nc,Nf). It is shown that for strong gauge coupling this 4d Yang–Mills–Higgs theory reduces to the Faddeev sigma model on R3,1 with Gr(Nc,Nf) as target. Its action contains the standard two-derivative sigma-model term as well as the four-derivative Skyrme-type term, which stabilizes solutions against scaling. Secondly, we consider a Yang–Mills–Higgs model with Nf=2Nc and a Higgs potential breaking the flavour group U(Nf)=U(2Nc) to U+(Nc)×U−(Nc), realizing the simplest A2⊕A2-type quiver gauge theory. The vacuum moduli space of this model is the group manifold Uh(Nc) which is the quotient of U+(Nc)×U−(Nc) by its diagonal subgroup. When the gauge coupling constant is large, this 4d Yang–Mills–Higgs model reduces to the Skyrme sigma model on R3,1 with Uh(Nc) as target. Thus, both the Skyrme and the Faddeev model arise as effective field theories in the infrared of Yang–Mills–Higgs models.
High-order cumulants in the counting statistics of asymmetric quantum dots
Creators: name: Fricke, Christian
name: Hohls, Frank
name: Sethubalasubramanian, Nandhavel
name: Fricke, Lukas
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2010
Subjects: subject: Charge detectors
subject: Counting statistics
subject: Cumulants
subject: High order cumulants
subject: High-order
subject: Quantum Dot
subject: Quantum dots
subject: Quantum point contact
subject: Single Electron Tunneling
subject: System variables
subject: Time dependence
subject: Time trace
subject: Electron tunneling
subject: Optical waveguides
subject: Point contacts
subject: Quantum chemistry
subject: Semiconductor quantum dots
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Measurements of single electron tunneling through a quantum dot (QD) using a quantum point contact as charge detector have been performed for very long time traces with very large event counts. This large statistical basis is used for a detailed examination of the counting statistics for varying symmetry of the QD system. From the measured statistics we extract high order cumulants describing the distribution. Oscillations of the high order cumulants are observed when varying the symmetry. We compare this behavior to the observed oscillation in time dependence and show that the variation in both system variables lead to the same kind of oscillating response. © 2010 American Institute of Physics.
Noise measurement of a quantized charge pump
Creators: name: Maire, Niels
name: Hohls, Frank
name: Kaestner, Bernd
name: Pierz, Klaus
name: Schumacher, Hans W.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2008
Subjects: subject: Frequency bands
subject: Frequency stability
subject: Charge pumping
subject: Electron pump
subject: Noise power
subject: Electrons
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study the noise properties of a gate controlled single electron pump at a driving frequency fp =400 MHz. We observe a significant reduction of the noise power on the current plateaus. This is a strong indication for true quantized charge pumping. We furthermore observe a small level of low frequency fluctuations which indicates a good frequency stability of the pump. © 2008 American Institute of Physics.
Dynamical scaling of the quantum Hall plateau transition
Creators: name: Hohls, Frank
name: Zeitler, U.
name: Haug, Rolf J.
name: Meisels, R.
name: Dybko, K.
name: Kuchar, F.
Publisher: name: College Park, MD : American Physical Society
Year: 2002
Subjects: subject: Carrier concentration
subject: Hall effect
subject: Heterojunctions
subject: Quantum theory
subject: Semiconducting aluminum compounds
subject: Semiconducting gallium arsenide
subject: Waveguides
subject: Dynamical scaling
subject: Phase transitions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The dynamical scaling of the quantum Hall plateau phase transition in the frequency range 0.1-55 GHz was examined. A universal scaling function was observed, yielding a dynamical exponent 0.9 ± 0.2. The universal behavior was independent of material, density, mobility, experimental technique, temperature and filling factor.
Gleichspannungsseitiges Störaussendungsverhalten von Photovoltaik Wechselrichtern und -anlagen
Creators: name: Kirchhof, Jörg
name: Kitterer, Sabine
name: Marklein, Rene
name: Wang, Jiamei
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Systemkonfiguration
subject: Photovoltaik
subject: Störverhalten
subject: Bundesnetzagentur
subject: Grenzwert
subject: Wechselrichter
subject: Messergebnis
subject: Wechselsystem
subject: Jahreszeit
subject: Photovoltaikanlage
subject: Messkampagne
subject: Mitgliedsland
subject: Datengrundlage
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: CISPR hatte einen Aufruf zur Durchführung von Messungen zum Störaussendungsverhalten von Photovoltaik-Wechselrichtern und -anlagen an alle Mitgliedsländer gestellt, um die Arbeiten an der Entwicklung eines Störmodells für diese Objekte zu unterstützen. Die deutsche Bundesnetzagentur war dem Aufruf gefolgt und hatte eine entsprechende Studie in Auftrag gegeben. Im Rahmen des gegebenen Umfangs der Studie wurden insgesamt drei Anlagen unterschiedlichen Typs untersucht. Die hier präsentierten Messergebnisse haben das CISPR-Modell sowie die bei CISPR durchgeführten Simulationen verifiziert, damit erscheinen auch die vorgeschlagenen leitungsgebundenen Grenzwerte für PV-Anlagen sinnvoll. Durch die bei der Durchführung der Messungen gewonnene Erfahrung und die erfolgte Umsetzung eines softwaregesteuerten Messablaufs ist die Grundlage für entsprechende zukünftige Messkampagnen unter optimierten Bedingungen geschaffen. Zur Erweiterung der Datengrundlage wären weitere Messungen an verschiedenen Standorten, Anlagenkonfigurationen und Jahreszeiteinflüssen wünschenswert.
title: Feeling forsaken : Christ's descent into hell in the theology of John Calvin
Creators: name: Hill, Preston McDaniel
Publisher: name: University of St Andrews
Year: 2021

description: There currently exists a substantial lacuna in scholarship on the place of Christ’s descent into hell in the theology of John Calvin. Although Calvin devoted five times more space in his ‘Institutes’ to Christ’s descent into hell than to any other clause of the Apostles’ Creed—an exposition which was nearly sextupled in length throughout the course of his career—the secondary literature on this theme is virtually non-existent and only passingly treated in Calvin scholarship to date. The impression given by this scarcity is that Calvin had little to say about the descensus or that what he did have to say is so obvious as to require only minimal secondary exposition. However, a mere glance beyond the ‘Institutes’ to Calvin’s other writings significantly unsettles such an opinion. From as early as age 25 in his first treatise ‘Psychopannychia’ to his later commentaries, sermons, and final draft of the ‘Institutes’, Calvin vehemently espoused an innovative descensus interpretation that remained virtually unchanged throughout his life. Moreover, despite longstanding popular opinion, all the major themes of Calvin’s interpretation can be found in prominent medieval, Renaissance, and late modern forerunners predating Calvin, demonstrating that his interpretation was far from novel. The disparity between Calvin’s detailed interpretation and the oversight of Calvin research on these important points calls for a fresh look at the place of Christ’s descent into hell in his theology. This thesis reconstructs Calvin’s descensus theology by tracing its development from the ‘Psychopannychia’ to the successive editions of Calvin’s ‘Institutes’, strategically comparing the major elements uncovered to significant forerunners of Calvin’s interpretation. This study puts forward the thesis that Calvin’s descensus theology cannot be referred exclusively to the events of the crucifixion without significant detriment to its other substantial manifestations in Calvin’s exposition, including the Gethsemane narrative, the intermediate state, the body/soul distinction of Christ’s suffering, and Christ’s beloved relation with the Father. Christ’s descent into hell clearly exceeds a mere metaphorical reference to the cross in Calvin’s theology.
A characterization of the diffuse Galactic emissions at large angular scales using the Tenerife data
Creators: name: Macías-Pérez, J. F.
name: Davies, R. D.
name: Watson, R.
name: Gutierrez, C. M.
name: Rebolo, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Anomalous microwave emission (AME) has been proved to be an important component of the Galactic diffuse emission in the range from 20 to 60 GHz. To discriminate between different models of AME low frequency microwave data from 10 to 20 GHz are needed. We present here a re-analysis of published and un-published Tenerife data from 10 to 33 GHz at large angular scales (from 5 to 15 degrees). We cross-correlate the Tenerife data to templates of the main Galactic diffuse emissions: synchrotron, free-free and thermal dust. We find evidence of dust correlated emission in the Tenerife data that could be explained as spinning dust grain emission.
description: 12 pages, 8 figures
Charakterisierung der Gleichtaktdrossel für Multi-Gig-Kommunikation in Automotive-Ethernet-Netzwerken
Creators: name: Mortazavi, Sanaz
name: Schleicher, Detlef
name: Schade, Frank
name: Gerfers, Friedel
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Frequenzbereich
subject: Ethernet
subject: Ethernet-Standard
subject: Netzwerkanalysator
subject: S-Parameter
subject: Breitband
subject: Leiterplatte
subject: Kommunikationssystem
subject: simuliertes Ergebnis
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 diesem Artikel wird eine SMD-Gleichtaktdrossel für Kommunikationssysteme (wie 100Base-T1) untersucht. Zusätzlich werden zwei weitere Drosseln von verschiedenen Herstellern für Multi-Gig Ethernet Kommunikation im Automobil (wie 1000Base-T1) hinsichtlich ihrer Hochfrequenzeigenschaften im Detail charakterisiert. Zunächst werden die relevanten Automotive Ethernet Standards gegenübergestellt. Anschließend wird ein geeignetes SPICE-Schaltungsmodell für die Gleichtaktdrossel vorgeschlagen. Dieses Modell enthält alle parasitären Effekte einschließlich Gehäuse-, Aufbau- und Löteffekten. Als nächstes wird die Gleichtakt- (CM) und Gegentakt- (DM) Impedanz der Drossel mit einem Impedanz-Analysator gemessen, welcher einen Frequenzbereich von bis zu 120 MHz abdeckt. Im Weiteren werden die Streuparameter (S-Parameter) und die Mixed-Mode S-Parameter der erwähnten Drosseln mit einem 4-Port-Vektornetzwerkanalysator in einem Frequenzbereich von 1 MHz bis 1 GHz gemessen. Die S-Parameter der Drossel mit Gleichtakt-Terminierung werden auf die gleiche Weise untersucht. Eine 3-Port Konfiguration wird für die Bewertung der Unterdrückung der Gleichtaktströme aufgebaut. Zur Charakterisierung der CMC, wird ein Satz von Breitband-Leiterplatten mit 3-Port- und 4-Port-Konfigurationen entworfen und hergestellt. Diese dienen als Halterplatine für die CMC-Messungen. Um die Effekte solcher einer Test-Fixture zu entfernen, wird die De- Embedding-Methode angewendet. Der Vergleich zwischen den gemessenen Parametern und den Simulationsergebnissen zeigt eine gute Übereinstimmung.
STEREO/EUVI Event Catalog 2006-2012
Creators: name: Aschwanden
name: J., M.
name: Wuelser
name: P., J.
name: Nariaki
name: V., N.
name: Lemen
name: R., J.
name: Thompson
name: T, W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We generated an event catalog with an automated detection algorithm based on the entire EUVI image database observed with the two Solar Terrestrial Relations Observatory STEREO-A and -B spacecraft over the first six years of the mission (2006\,--\,2012). The event catalog includes the heliographic positions of some 20\,000 EUV events, transformed from spacecraft coordinates to Earth coordinates, and information on associated GOES flare events (down to the level of GOES A5-class flares). The 304 \ang\ wavelength turns out to be the most efficient channel for flare detection (79\,%), while the 171 \ang\ (4\,%), 195 \ang\ (10\,%), and the 284 \ang\ channel (7\,%) retrieve substantially fewer flare events, partially due to the suppressing effect of EUV dimming, and partially due to the lower cadence in the later years of the mission. Due to the Sun-circling orbits of STEREO-A and -B, a large number of flares have been detected on the farside of the Sun, invisible from Earth, or seen as partially occulted events. The statistical size distributions of EUV peak fluxes (with a power-law slope of $α_P = 2.5\pm0.2$) and event durations (with a power-law slope of $α_T=2.4\pm0.3$) are found to be consistent with the fractal-diffusive self-organized criticality model. The EUVI event catalog is available on-line \url{http://secchi.lmsal.com/EUVI/euvi__autodetection/euvi__events.txt} and may serve as a comprehensive tool to identify stereoscopically observed flare events for 3D reconstruction and to study occulted flare events.
description: Solar Physics (in press)
Quercus robur
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: Q. lanugüiosa X Robur - l: Gegend von Monthey (Oberli); BoisNoir (Garns). - 2:Unter Jeur-Brülee ob Branson (Garns). - 3: Pfynwald (Schmid).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Statistical multifragmentation model with discretized energy and the generalized Fermi breakup. I. Formulation of the model
Creators: name: Souza, S. R.
name: Carlson, B. V.
name: Donangelo, R.
name: Lynch, W. G.
name: Tsang, M. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Generalized Fermi Breakup recently demonstrated to be formally equivalent to the Statistical Multifragmentation Model, if the contribution of excited states are included in the state densities of the former, is implemented. Since this treatment requires the application of the Statistical Multifragmentation Model repeatedly on the hot fragments until they have decayed to their ground states, it becomes extremely computational demanding, making its application to the systems of interest extremely difficult. Based on exact recursion formulae previously developed by Chase and Mekjian to calculate the statistical weights very efficiently, we present an implementation which is efficient enough to allow it to be applied to large systems at high excitation energies. Comparison with the GEMINI++ sequential decay code shows that the predictions obtained with our treatment are fairly similar to those obtained with this more traditional model.
description: 8 pages, 6 figures
Instantons in six dimensions and twistors
Creators: name: Ivanova, Tatiana A.
name: Lechtenfeld, Olaf
name: Popov, Alexander D.
name: Tormaehlen, Maike
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Holomorphic line bundles
subject: Maxwell potentials
subject: Hermitian structures
subject: Yang–Mills theory
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Recently, conformal field theories in six dimensions were discussed from the twistorial point of view. In particular, it was demonstrated that the twistor transform between chiral zero-rest-mass fields and cohomology classes on twistor space can be generalized from four to six dimensions. On the other hand, the possibility of generalizing the correspondence between instanton gauge fields and holomorphic bundles over twistor space is questionable. It was shown by Samann and Wolf that holomorphic line bundles over the canonical twistor space Tw(X) (defined as a bundle of almost complex structures over the six-dimensional manifold X) correspond to pure-gauge Maxwell potentials, i.e. the twistor transform fails. On the example of X = CP3 we show that there exists a twistor correspondence between Abelian or non-Abelian Yang Mills instantons on CP3 and holomorphic bundles over complex submanifolds of Tw (CP3), but it is not so efficient as in the four-dimensional case because the twistor transform does not parametrize instantons by unconstrained holomorphic data as it does in four dimensions
Two-dimensional dipolar Bose gas with the roton-maxon excitation spectrum
Creators: name: Boudjemaâ, Abdelâali
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss fluctuations in a dilute two-dimensional Bose-condensed dipolar gas, which has a roton-maxon character of the excitation spectrum. We calculate the density-density correlation function, fluctuation corrections to the chemical potential, compressibility, and the normal (superfluid) fraction. It is shown that the presence of the roton strongly enhances fluctuations of the density, and we establish the validity criterion of the Bogoliubov approach. At T=0 the condensate depletion becomes significant if the roton minimum is sufficiently close to zero. At finite temperatures exceeding the roton energy, the effect of thermal fluctuations is stronger and it may lead to a large normal fraction of the gas and compressibility.
description: 5 pages, 3 figures
Licht ein, Licht aus. Der molekulare Schalter
Creators: name: Di Ventura, Barbara
name: Eils, Roland
Publisher: name: Ruperto Carola
Year: 2015

description: Ein neuer Forschungsbereich, die „Optogenetik“, macht es möglich, das Verhalten von Zellen per Licht zu steuern. Heidelberger Wissenschaftler haben ein spezielles optogenetisches Verfahren entwickelt, mit dem sie Proteine gezielt im Innern von Zellen dirigieren können. Das eröffnet vielfältige Anwendungsmöglichkeiten sowohl in der Grundlagen- wie in der angewandten Forschung.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
Electrostatic Graphene Loudspeaker
Creators: name: Zhou, Qin
name: Zettl, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene has extremely low mass density and high mechanical strength, key qualities for efficient wide-frequency-response electrostatic audio speaker design. Low mass ensures good high frequency response, while high strength allows for relatively large free-standing diaphragms necessary for effective low frequency response. Here we report on construction and testing of a miniaturized graphene-based electrostatic audio transducer. The speaker/earphone is straightforward in design and operation and has excellent frequency response across the entire audio frequency range (20HZ - 20kHz), with performance matching or surpassing commercially available audio earphones.
description: 15 pages, 4 figures, journal
Dunkle Dichtung. Glanz und Traum der Schatten
Creators: name: Reuß, Roland
Publisher: name: Ruperto Carola
Year: 2015

description: Licht und Schatten – das sind für den deutschen Lyriker Johann Christian Friedrich Hölderlin nicht nur Phänomene der Wahrnehmung, sondern auch und vielleicht sogar vornehmlich mit diesen verbundene Konzepte, deren Mehrdeutigkeit er in seinem Werk exemplarisch entfaltet. Als „dunkle“ Dichtung gilt sein Werk so manchem, aber auch als Zeichen der „Umnachtung“ – zu Unrecht.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
Access to Baccalaureate School in Switzerland: Regional Variance of Institutional Conditions and Its Consequences for Educational Inequalities
Creators: name: Leemann, Regula Julia
name: Pfeifer Brändli, Andrea
name: Imdorf, Christian
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: baccalaureate school
subject: Switzerland
subject: educational federalism
subject: educational transition
subject: upper-secondary education
subject: regional variance
subject: educational structures
subject: educational provision
subject: educational inequalities
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: In Switzerland, baccalaureate school is still considered to be the royal road to a university education and the elite path for the social reproduction of the upper class. However, cantonal enrollment to baccalaureate school varies widely due to Swiss federalism. There is a recurring debate on whether access to baccalaureate school is fair and equal among pupils who live in different cantons and who are of different social origin. This paper aims to analyze how the institutional conditions of cantons and municipalities impact a pupil’s probability of entering baccalaureate school and how the cantonal provisioning of places in baccalaureate school affects social inequality of access. For our theoretical foundation, we combine concepts of neo-institutionalism with mechanisms of social reproduction in education. Empirically, we analyze national longitudinal register data to model educational transitions from compulsory to baccalaureate school by using logistic regression models. Our results show that institutional structures at the cantonal and municipal levels influence the probability of transition beyond individual pupils’ characteristics. The degree of inequality varies between cantons, depending on the supply of baccalaureate school places. Inequality first increases with an increasing number of places (the scissors effect) and decreases only after the demand of more privileged families for places at baccalaureate school is saturated.
Charakterbauten. Die Ästhetik von Licht und Schatten
Creators: name: Hesse, Michael
Publisher: name: Ruperto Carola
Year: 2015

description: Lichteinfall und Schattenwurf bestimmen, wie wir ein Gebäude wahrnehmen. Das wussten schon die Baumeister der Antike. Hinsichtlich ihrer Wirkung reflektiert aber wurden beide Phänomene erst mit der zunehmenden Psychologisierung der Künste im 18. Jahrhundert: Über den Wert eines Bauwerks entschieden von nun an weniger die objektiven Fakten als vielmehr dessen unmittelbare sinnliche Wirkung auf den Betrachter. Dies zeigt sich am Spiel mit Licht und Schatten in der Architektur selbst, vor allem aber an der Art und Weise, wie Gebäude in bildlichen Darstellungen inszeniert wurden.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
On the supernova remnants with flat radio spectra
Creators: name: Onic, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A considerable fraction of Galactic supernova remnants (SNRs) characterize flat spectral indices ($α<0.5$). There are several explanations of the flat radio spectra of SNRs in the present literature. The most of models involve a significant contribution of the second-order Fermi mechanism but some of them also discuss high compressions (>4), contribution of secondary electrons left over from the decay of charged pions, as well as the possibility of thermal contamination. In the case of expansion in high density environment, intrinsic thermal bremsstrahlung could theoretically shape the radio spectrum of an SNR and also account for observable curved -- "concave up" radio spectra of some Galactic SNRs. This model could also shed a light on the question of flat spectral indices determined in some Galactic SNRs. On the other hand, present knowledge of the radio continuum spectra (integrated flux densities at different frequencies) of SNRs prevent definite conclusions about the significance of proposed models so the question on flat spectral indices still remains open. New observations, especially at high radio continuum frequencies, are expected to solve these questions in the near future. Finally, as there is a significant connection between the majority of Galactic SNRs with flat integrated radio spectrum and their detection in $γ$-rays as well as detection of radiative recombination continua in their X-ray spectra, the analysis of high energy properties of these SNRs is very important.
description: Accepted for publication in Astrophysics and Space Science. arXiv admin note: text overlap with arXiv:1207.2057 by other authors
Untersuchungen zum Phasenumwandlungs- und Ordnungsparameterverhalten ferroelastischer Systeme mittels der lokalen Sonden Raman-, IR- und NMR-Spektroskopie
Creators: name: Engelhardt, Astrid
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Lead phosphate
subject: ferroelastic
subject: IR spectroscopy
subject: letovicite
subject: NMR spectroscopy
subject: order parameter
subject: phase transition
subject: proton conduction
subject: Raman spectroscopy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Es werde Licht! Leuchten vom Altertum bis in die Neuzeit
Creators: name: Stupperich, Reinhard
Publisher: name: Ruperto Carola
Year: 2015

description: Heute ist es selbstverständlich: Wird es draußen dunkel, schalten wir das Licht ein. Von der Antike bis in die Neuzeit jedoch war künstliches Licht ein Luxusgut, das sich nur sehr wenige leisten konnten. In der Heidelberger Klassischen Archäologie erschließen wir die Entwicklungsgeschichte künstlicher Leuchtmittel und zeigen wichtige kulturelle und technische Strömungen auf.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
Semiconjugate Factorizations of Higher Order Linear Difference Equations in Rings
Creators: name: Sedaghat, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Rings and Algebras (math.RA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 39A06, 39B52

description: We study linear difference equations with variable coefficients in a ring using a new nonlinear method. In a ring with identity, if the homogeneous part of the linear equation has a solution in the unit group of the ring (i.e., a unitary solution) then we show that the equation decomposes into two linear equations of lower orders. This decomposition, known as a semiconjugate factorization in the nonlinear theory, generalizes the classical operator factorization in the linear context. Sequences of ratios of consecutive terms of a unitary solution are used to obtain the semiconjugate factorization. Such sequences, known as eigensequences are well-suited to variable coefficients; for instance, they provide a natural context for the expression of the classical Poincaré-Perron Theorem. We discuss some applications to linear difference equations with periodic coefficients and also derive formulas for the general solutions of linear functional recurrences satisfied by the classical special functions such as the modified Bessel and Chebyshev.
description: Application of nonlinear semiconjugate factorization theory to linear difference equations with variable coefficients in rings; 29 pages, containing the main theory and more than 8 examples worked out in detail
Analytische Berechnung der Schirmwirkung von Karosserieblechen und Einsatz von aktiver Kompensation gegen niederfrequente Magnetfelder von HV-Leitungen in Elektrofahrzeugen
Creators: name: Henke, Anika
name: Nowak, Robert
name: Frei, Stephan
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Elektrofahrzeug
subject: Karosserie
subject: Magnetfelder
subject: Person
subject: Grenzwert
subject: Schirmwirkung
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 dem Beitrag wird ein semianalytisches Verfahren für die Berechnung der Schirmwirkung von ausgedehnten leitfähigen Platten gegen Magnetfelder von geradlinigen, parallelen Leiteranordnungen vorgestellt. Dieses Verfahren wurde auf unterschiedliche Konfigurationen angewendet, um grundsätzliche Aussagen zur Schirmwirkung von Fahrzeugkarosserien zu erhalten. Insgesamt kann festgehalten werden, dass die Einhaltung von Personengrenzwerten durch die Karosserie deutlich unterstützt werden kann. Kompensationsleiter bieten für die betrachteten Fälle jedoch nur geringe Potentiale zur Verringerung der auftretenden Flussdichten. Nur in einem relativ kleinen Volumen lassen sich damit Verbesserungen erzielen. Insofern sind andere Möglichkeiten wie beispielsweise die Einhaltung eines gewissen Abstandes zwischen Personen und den HV-Leitungen möglicherweise leichter und kostengünstiger umzusetzen.