cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Typha latifolia L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: T. latifolia L. Cat. 334. 3: An der Murithschen Stelle bei Le Guercet noch 1916 häufig, später dezimiert und selten ge- worden (F.). Die von Riddes angegebene var. confusa Besse et Beauverd (vgl. Besse et Beauverd Lit. 1921 a undb) dürftenachGAMSzumBastardT. angustifoliaXlatifoliagehören.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Impact Analysis for Risks in Informatics Systems
Creators: name: Baicu, Floarea
name: Baches, Maria Alexandra
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Finance (q-fin.GN)
subject: Computers and Society (cs.CY)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: In this paper are presented methods of impact analysis on informatics system security accidents, qualitative and quantitative methods, starting with risk and informational system security definitions. It is presented the relationship between the risks of exploiting vulnerabilities of security system, security level of these informatics systems, probability of exploiting the weak points subject to financial losses of a company, respectively impact of a security accident on the company. Herewith are presented some examples concerning losses caused by excesses within informational systems and depicted from the study carried out by CSI.
description: 12 pages, 3 figures, 5 refferences, ENEC 2008, ISSN 265-2550
Curves of Generalized AW(k)-type in Euclidean Spaces
Creators: name: Arslan, Kadri
name: Guvenc, Saban
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C40, 53C42

description: In this study, we consider curves of generalized AW(k)-type of Euclidean n-space. We give curvature conditions of these kind of curves.
description: 12 pages
Neutron radiography for visualization of liquid metal processes: Bubbly flow for CO2 free production of Hydrogen and solidification processes in em field
Creators: name: Baake, E.
name: Fehling, T.
name: Musaeva, D.
name: Steinberg, T.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: Carbon dioxide
subject: Liquid metals
subject: Liquids
subject: Neutron radiography
subject: Neutrons
subject: Solidification
subject: Visualization
subject: Experimental investigations
subject: Molten gallium
subject: Production of hydrogen
subject: Residence time
subject: Solidification fronts
subject: Solidification process
subject: Two-phase process
subject: Visual information
subject: Hydrogen production
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The paper describes the results of two experimental investigations aimed to extend the abilities of a neutron radiography to visualize two-phase processes in the electromagnetically (EM) driven melt flow. In the first experiment the Argon bubbly flow in the molten Gallium - a simulation of the CO2 free production of Hydrogen process - was investigated and visualized. Abilities of EM stirring for control on the bubbles residence time in the melt were tested. The second experiment was directed to visualization of a solidification front formation under the influence of EM field. On the basis of the neutron shadow pictures the form of growing ingot, influenced by turbulent flows, was considered. In the both cases rotating permanent magnets were agitating the melt flow. The experimental results have shown that the neutron radiography can be successfully employed for obtaining the visual information about the described processes.
Experimental and Numerical Simulation of the Dynamic Frictional Contact between an Aircraft Tire Rubber and a Rough Surface
Creators: name: Rosu, Iulian
name: Elias-Birembaux, Hélène
name: Lebon, Frédéric
name: Lind, Hagen
name: Wangenheim, Matthias
Publisher: name: Basel : MDPI AG
Year: 2016
Subjects: subject: contact pressure
subject: finite element
subject: friction coefficient
subject: modeling
subject: temperature
subject: tire
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: This paper presents a numerical simulation of an aircraft tire in contact with a rough surface using a variable friction coefficient dependent on temperature and contact pressure. A sliding facility was used in order to evaluate this dependence of the friction coefficient. The temperature diffusion throughout the tire cross-section was measured by means of thermocouples. Both frictional heating and temperature diffusion were compared to numerical two- and three- dimensional simulations. An adequate temperature prediction could be obtained. In future simulations, wear should be taken into account in order to have a more accurate simulation especially in the case of high pressures and slipping velocities. A 3D finite element model for a rolling tire at a velocity of 37.79 knots (19.44 m/s) and in a cornering phase was investigated using a variable friction coefficient dependent on temperature and pressure. The numerical simulation tended to predict the temperature of the tire tread after a few seconds of rolling in skidding position, the temperature of the contact zone increases to 140 °C. Further investigations must be carried out in order to obtain the evolution of the temperature observed experimentally. The authors would like to point out that for confidentiality reasons, certain numerical data could not be revealed.
X-Ray Observations of the W51 Complex with Suzaku
Creators: name: Hanabata, Yoshitaka
name: Sawada, Makoto
name: Katagiri, Hideaki
name: Bamba, Aya
name: Fukazawa, Yasushi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a detailed analysis of the X-ray emission from the middle-aged supernova remnant W51C and star-forming region W51B with Suzaku. The soft X-ray emission from W51C is well represented by an optically thin thermal plasma in the non-equilibrium ionization state with a temperature of $\sim$0.7 keV. The elemental abundance of Mg is significantly higher than the solar value. We find no significant feature of an over-ionized plasma in W51C. The hard X-ray emission is spatially coincident with the molecular clouds associated with W51B, overlapping with W51C. The spectrum is represented by an optically thin thermal plasma with a temperature of $\sim$5 keV or a powerlaw model with a photon index of $\sim$2.2. The emission probably has diffuse nature since its luminosity of 1$\times10^{34}$ erg s$^{-1}$ in the 0.5-10 keV band cannot be explained by the emission from point sources in this region. We discuss the possibility that the hard X-ray emission comes from stellar winds of OB stars in W51B or accelerated particles in W51C.
description: 11 pages, 5 figures, accepted for publication in PASJ
On the rank of higher inclusion matrices
Creators: name: Grosu, Codrut
name: Person, Yury
name: Szabo, Tibor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05D05

description: Let r >= s >= 0 be integers and G be an r-graph. The higher inclusion matrix M_s^r(G) is a {0,1}-matrix with rows indexed by the edges of G and columns indexed by the subsets of V(G) of size s: the entry corresponding to an edge e and a subset S is 1 if S is contained in e and 0 otherwise. Following a question of Frankl and Tokushige and a result of Keevash, we define the rank-extremal function rex(n,t,r,s) as the maximum number of edges of an r-graph G having rank M_s^r(G) <=\binom{n}{s} - t. For t at most linear in n we determine this function as well as the extremal r-graphs. The special case t=1 answers a question of Keevash.
description: 18 pages
Modelling and Automated Retrieval of Provenance Relationships (Full Texts)
Creators: name: Schneider, Thomas
Publisher: name: Zenodo
Year: 2023
Subjects: Question answering
Information retrieval
Provenance research
Graph techniques
Data integration

description: This upload contains a .zip file with the full texts of a part of the publications that are cited in the master's thesis with the above name. For licensing reasons, this upload must remain closed access.
CSLs of the root lattice $\mathbf{A_4}$
Creators: name: Heuer, Manuela
name: Zeiner, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C07, 11R52, 05A15

description: Recently, the group of coincidence isometries of the root lattice $A_4$ has been determined providing a classification of these isometries with respect to their coincidence indices. A more difficult task is the classification of all CSLs, since different coincidence isometries may generate the same CSL. In contrast to the typical examples in dimensions $d \leq 3$, where coincidence isometries generating the same CSL can only differ by a symmetry operation, the situation is more involved in 4 dimensions. Here, we find coincidence isometries that are not related by a symmetry operation but nevertheless give rise to the same CSL. We indicate how the classification of CSLs can be obtained by making use of the icosian ring and provide explicit criteria for two isometries to generate the same CSL. Moreover, we determine the number of CSLs of a given index and encapsulate the result in a Dirichlet series generating function.
description: 6 pages
Reversible Mode Switching in Y coupled Terahertz Lasers
Creators: name: Marshall, Owen P.
name: Chakraborty, Subhasish
name: Khairuzzaman, Md
name: Beere, Harvey E.
name: Ritchie, David A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated hologram techniques, incorporated directly into the QCL waveguide by focussed ion beam milling. Multi-moded emission around 2.9 THz is inhibited, lasing instead occurring at switchable grating-selected frequencies of 2.88 and 2.92 THz. This photonic control and switching behaviour is selectively and reversibly transferred to the second, unmodified QCL via evanescent mode coupling, without the transfer of the inherent grating losses.
title: Antiquarische Mittlheilungen aus Basel, Die Grabhügel in der Hardt, eröffnet und beschrieben von Prof. W. Vischer. Zürich 1842
Creators: name: Düntzer, Heinrich
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Antiquarische Mittlheilungen aus Basel, Die Grabhügel in der Hardt, eröffnet und beschrieben von Prof. W. Vischer. Zürich 1842. S. 16 mit drei Tafeln. Fol. (Aus der Zeitschrift der antiquarischen Gesellschaft in Zürich.).
title: Duodenal duplication cyst: Rare cause of abdominal pain in adults
Creators: name: Pereira, Rafaela
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: CT
subject: MR
subject: Clinical Cases

description: Clinical History: A 31-year-old woman was referred to our hospital due to a right hypochondrium cystic lesion detected in an abdominal ultrasound. The patient had recurrent complaints of epigastric pain and postprandial fullness and was medicated with proton-pump inhibitors. She had unremarkable medical history and the laboratory tests were normal.

description: 31 years, female
ADOPTION: SPIRIT OF SONSHIP
Creators: name: Asore, Olorunfemi Bolaji
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 500501
subject: Theology
classificationCode: 500401
subject: Christian studies

description: “For as many as are led by the spirit” Signify the widespread gospel of our Lord Jesus Christ and his clarions calling that can lead to the receiver through the invitation of God's good tidiness aforementioned the immaculate power restoration spirit of adoption as God mark of his sonship, ownership, and authorship unique fulfillment of God glory to the multitude priori Christ sacrificial benefit to the world, affirmed him a messianic arrangement to its sacrificial offering recorded by prophet Isaiah 55:11 Ho, every one that thirsteth, come ye to the waters, and he that hath no money; come ye, buy, and eat; yea, come, buy wine and milk without money and price. This means that its invitation comes as a free will to humans and the incense power to choose because mankind has been declared to have the incessant power to choose right and wrong during and after man's falling in the Garden of Eden.
Plasmons in Pb nanowire arrays on Si(557): Between one and two dimensions
Creators: name: Block, Tammo
name: Tegenkamp, Christoph
name: Baringhaus, Jens
name: Pfnür, Herbert
name: Inaoka, T.
Publisher: name: College Park, MD : American Physical Society
Year: 2011
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The plasmon dispersion in arrays of nanowires of Pb close to an average Pb coverage of one monolayer was determined on the Si(557) surface using electron energy loss spectroscopy with both high energy and momentum resolution. While we find purely one-dimensional (1D) plasmon losses at a Pb concentration of 1.31 monolayers (ML), measured with respect to the Si(111) surface concentration, the 1.2 and 1.4 ML coverages exhibit wavelength-dependent transitions from 1D to anisotropic 2D properties. However, due to the high anisotropy in the system at all coverages, the dispersion curves exhibit 1D characteristics in both directions. This behavior seems to be related to the Pb-induced refacetting of the Si(557) surface, which depends on Pb coverage. It changes both effective system sizes and coupling strength between miniterraces. © 2011 American Physical Society.
Self-aligning universal beam coupler
Creators: name: Miller, David A. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a device that can take an arbitrary monochromatic input beam and couple it into a single-mode guide or beam. Simple feedback loops from detectors to modulator elements allow the device to adapt automatically to any specific input beam form. Potential applications include automatic compensation for misalignment and defocusing of an input beam, coupling of complex modes or multiple beams from fibers or free space to single-mode guides, and retaining coupling to a moving source. Straightforward extensions allow multiple different overlapping orthogonal input beams to be separated simultaneously to different single-mode guides with no splitting loss in principle. The approach is suitable for implementation in integrated optics platforms that offer elements such as phase shifters, Mach-Zehnder interferometers, grating couplers, and integrated monitoring detectors, and the basic approach is applicable in principle to other types of waves, such as microwaves or acoustics.
Possible Origin of Radio Emission from Nonthermal Electrons in Hot Accretion Flows for Low-Luminosity Active Galactic Nuclei
Creators: name: Liu, Hu
name: Wu, Qingwen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The two components of radio emission, above and below 86 GHz respectively, from the Galactic center source-Sgr A* can be naturally explained by the hybrid of thermal and nonthermal electrons in hot accretion flows (e.g., radiatively inefficient accretion flow, RIAF, e.g., Yuan et al. 2003). We further apply this model to a sample of nearby low-luminosity active galactic nuclei (LLAGNs), which are also believed to be powered by the RIAF. We selected the LLAGNs with only compact radio cores according to the high-resolution radio observations, and the sources observed with jets or jet-like features are excluded. We find that the radio emission of LLAGNs is severely underpredicted by pure RIAF model, and can be naturally explained by the RIAF model with a hybrid electron population consisting of both thermal and nonthermal particles. Our model can roughly reproduce the observed anti-correlation between the mass-corrected radio loudness and Eddington ratio for the LLAGNs in our sample. We further model the spectral energy distributions of each source in our sample, and find that roughly all sources can be well fitted if a small fraction of the steady state electron energy is ejected into the nonthermal electrons. The size of radio emission region of our model is around several thousand gravitational radii, which is also roughly consistent with the recent high-resolution VLBI observations for some nearby LLAGNs.
description: 10 pages, 5 figures, accepted for publication in ApJ
Alternative approaches to maximally supersymmetric field theories
Creators: name: Brödel, Johannes
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Twistor string theory
subject: N=8 supergravity
subject: Grassmanian formulation
subject: Twistorstringtheorie
subject: N=8 Supergravitation
subject: Grassmannsche Formulierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Detection of Total Rotations on 2D-Vector Fields with Geometric Correlation
Creators: name: Bujack, Roxana
name: Scheuermann, Gerik
name: Hitzer, Eckhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Correlation is a common technique for the detection of shifts. Its generalization to the multidimensional geometric correlation in Clifford algebras additionally contains information with respect to rotational misalignment. It has been proven a useful tool for the registration of vector fields that differ by an outer rotation. In this paper we proof that applying the geometric correlation iteratively has the potential to detect the total rotational misalignment for linear two-dimensional vector fields. We further analyze its effect on general analytic vector fields and show how the rotation can be calculated from their power series expansions.
Algebraic independence results for reciprocal sums of Fibonacci and Lucas numbers
Creators: name: Stein, Martin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Algebraic independence
subject: Fibonacci numbers
subject: Nesterenko's theorem on Ramanujan functions
subject: Algebraische Unabhängigkeit
subject: Fibonacci-Zahlen
subject: Nesterenkos Satz über Ramanujan Funktionen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
Investigation of the Transition Reaction of Tobermorite to Xonotlite under Influence of Additives
Creators: name: Hartmann, Andrea
name: Schulenberg, David
name: Buhl, Josef-Christian
Publisher: name: Delaware : Scientific Research Publishing Inc.
Year: 2015
Subjects: subject: CSH-Phases
subject: Tobermorite
subject: Xonotlite
subject: Additives
subject: Retarder
subject: Accelerator
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: The objective of the present work was to investigate the transition reaction of the calcium silicate hydrate tobermorite into xonotlite under influence of additives. Tobermorite is the main binding agent in steam hardened building materials and the appearance of xonotlite indicates the progress of hardening and an overcuring of the material. Hydrothermal experiments under addition of sucrose, calcium formate and calcium chloride dihydrate to the main components quartz and lime were done using temperatures of 220°C and a reaction time of 40.5 h. All experiments were performed with powders as well as with pressed educts. The products of all syntheses were analyzed with XRD, SEM/EDX and FTIR. The references as well as the syntheses with calcium chloride dihydrate led to the formation of 11 Å tobermorite and xonotlite. The former showed the best results and even synthesis with pressed educts and calcium chloride dihydrate revealed an accelerating effect of the additive. In contrast syntheses with sucrose had the worst reactivity and led to the formation of calcite beside the CSH-phase scawtite. The additive calcium formate was only slightly oppressing the crystallization of tobermorite and favouring the formation of xonotlite. Syntheses with pressed pellets and sucrose or calcium formate showed generally worse results.
Statistical Mechanics of a Discrete Schrödinger Equation with Saturable Nonlinearity
Creators: name: Samuelsen, Mogens R.
name: Khare, Avinash
name: Saxena, Avadh
name: Rasmussen, Kim Ø.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the statistical mechanics of the one-dimensional discrete nonlinear Schrödinger (DNLS) equation with saturable nonlinearity. Our study represents an extension of earlier work [Phys. Rev. Lett. {\bf 84}, 3740 (2000)] regarding the statistical mechanics of the one-dimensional DNLS equation with a cubic nonlinearity. As in this earlier study we identify the spontaneous creation of localized excitations with a discontinuity in the partition function. The fact that this phenomenon is retained in the saturable DNLS is non-trivial, since in contrast to the cubic DNLS whose nonlinear character is enhanced as the excitation amplitude increases, the saturable DNLS in fact becomes increasingly linear as the excitation amplitude increases. We explore the nonlinear dynamics of this phenomenon by direct numerical simulations.
Aluminium uptake, translocation and accumulation in the aluminium accumulating plant species buckwheat (Fagopyrum esculentum Moench)
Creators: name: Klug, Benjamin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Accumulator
subject: Al resistance
subject: Al detoxification
subject: Akkumulator
subject: Al Resistenz
subject: Al Entgiftung
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: [no abstract]
Experimental evidence for the relaxation coupling of all longitudinal 7Li magnetization orders in the superionic conductor Li10GeP2S12
Creators: name: Paulus, M.C.
name: Paulus, A.
name: Schleker, P.P.M.
name: Jakes, P.
name: Jakes, P.
name: Eichel, R.-A.
name: Heitjans, Paul
name: Granwehr, J.
Publisher: name: Amsterdam : Elsevier
Year: 2019
Subjects: subject: Solid-state NMR
subject: Quadrupolar relaxation
subject: Solid-state electrolytes
subject: Lithium-ion migration
subject: Simulations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: This contribution addresses the experimental proof of the relaxation coupling of the 7Li (I = 3/2) longitudinal magnetization orders in the solid-state electrolyte Li10GeP2S12 (LGPS). This effect was theoretically described by Korb and Petit in 1988 but has not yet been shown experimentally. In a 2D-T1/spin-alignment echo (SAE) experiment, the inverse Laplace transformation of the spectral component over two time dimensions revealed the asymmetric course of the spin-lattice relaxation following from the coupling of all longitudinal orders. These observations were supported by Multi-quantum-filter experiments and by simulations of the 2D-T1/SAE experiment with a lithium spin system. Since the asymmetric relaxation effects are directly dependent on the velocities and degrees of freedom of ion motion they could be used especially in fast Li-ion conductors as a separation tool for environments with different mobility processes.
Persistence of equilibrium states in an oscillating double-well potential
Creators: name: Jiang, H.
name: Susanto, H.
name: Benson, T. M.
name: Cliffe, K. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate numerically parametrically driven coupled nonlinear Schrodinger equations modelling the dynamics of coupled wavefields in a periodically oscillating double-well potential. The equations describe among other things two coupled periodically-curved optical waveguides with Kerr nonlinearity or horizontally shaken Bose-Einstein condensates in a double-well magnetic trap. In particular, we study the persistence of equilibrium states of the undriven system due to the presence of the parametric drive. Using numerical continuations of periodic orbits and calculating the corresponding Floquet multipliers, we find that the drive can (de)stabilize a continuation of an equilibrium state indicated by the change of the (in)stability of the orbit. Hence, we show that parametric drives can provide a powerful control to nonlinear (optical or matter wave) field tunneling. Analytical approximations based on an averaging method are presented. Using perturbation theory the influence of the drive on the symmetry breaking bifurcation point is discussed.
Aluminosilicate borohydrides : NaBH4 embedded in sodalite and gel structures
Creators: name: Schomborg, Lars
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Sodium borohydrate
subject: sodalite
subject: hydrogen
subject: Natriumborhydrid
subject: Sodalith
subject: Wasserstoff
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
An empirical analysis of behavioral finance theories in international equity markets
Creators: name: Schmeling, Maik
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Asset pricing
subject: behavioral finance
subject: expected returns
subject: loss aversion
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
title: Baudenkmale der Römischen Periode und des Mittelalters
Creators: name: Urlichs, Ludwig Von
Publisher: name: University Library Heidelberg
Year: 2015

description: Baudenkmale der Römischen Periode und des Mittelalters, in Trier und seiner Umgebung. Herausgegeben von dem Architekten Christian Wilhelm Schmidt. IV. Lieferung, der Römischen Baudenkmale I. Heft. Die Jagdvilla zu Fliessem. Trier 1843. 32 S. 4, nebst 6 Kupfertafeln, wovon 5 colorirt sind, in fol.
Oxidation as Key Mechanism for Efficient Interface Passivation in Cu (In,Ga)Se2 Thin-Film Solar Cells
Creators: name: Werner, Florian
name: Veith-Wolf, Boris
name: Spindler, Conrad
name: Barget, Michael R.
name: Babbe, Finn
name: Guillot, Jerome
name: Schmidt, Jan
name: Siebentritt, Susanne
Publisher: name: College Park, Md. [u.a.] : American Physical Society
Year: 2020
Subjects: subject: copper-indium-gallium-diselenide (CIGS)
subject: solar cells
subject: dielectric passivation layers
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Copper-indium-gallium-diselenide (CIGS) thin-film solar cells suffer from high recombination losses at the back contact and parasitic absorption in the front-contact layers. Dielectric passivation layers overcome these limitations and enable an efficient control over interface recombination, which becomes increasingly relevant as thin-film solar cells increase in efficiency and become thinner to reduce the consumption of precious resources. We present the optoelectronic and chemical interface properties of oxide-based passivation layers deposited by atomic layer deposition on CIGS. A suitable postdeposition annealing removes detrimental interface defects and leads to restructuring and oxidation of the CIGS surface. The optoelectronic interface properties are very similar for different passivation approaches, demonstrating that an efficient suppression of interface states is possible independent of the metal used in the passivating oxide. If aluminum oxide (Al2O3) is used as the passivation layer we confirm an additional field-effect passivation due to interface charges, resulting in an efficient interface passivation superior to that of a state-of-the-art cadmium-sulfide (CdS) buffer layer. Based on this chemical interface model we present a full-area rear-interface passivation layer without any contact patterning, resulting in a 1% absolute efficiency gain compared to a standard molybdenum back contact. © 2020 authors. Published by the American Physical Society.
Imperfect Construction of Microclusters
Creators: name: Schneider, Eric
name: Zhou, Kevin
name: Gilbert, Gerald
name: Weinstein, Yaakov S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Microclusters are the basic building blocks used to construct cluster states capable of supporting fault-tolerant quantum computation. In this paper, we explore the consequences of errors on microcluster construction using two error models. To quantify the effect of the errors we calculate the fidelity of the constructed microclusters and the fidelity with which two such microclusters can be fused together. Such simulations are vital for gauging the capability of an experimental system to achieve fault tolerance.
description: 5 pages 2 figures
Typha angustifolia L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: T. angustifolia L. Cat. 334. 2:Saillon (J., Garns); Niedergesteln-Raron(Christ).- 3:Pfyn (Paiche);Turtig (Christ).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Biophysical characterization and NMR analysis of the PDI fragment b'xa'c
Creators: name: Doko, Denisa
Publisher: name: University of Kent
Year: 2023

description: Protein disulphide isomerase (PDI) was the first catalyst of protein folding to be identified and is a key cellular chaperone required for the rapid formation of correctly folded disulphide bonded proteins in the secretory pathway. PDI is the archetype of a large family of ER-resident PDI-like proteins and contains four thioredoxin-like domains, two of which, like thioredoxin itself, have redox-active (COHC) catalytic sites (a and a') and two of which do not (b and b'). The domain order is abb'xa'c where x is a 19 residue linker between the b' and a' domains and c is a C-terminal acidic tail containing the KDEL ER retention signal. The x linker has been shown to occlude the primary ligand binding site in the human b'x construct; an event called "capping". In previous work, site-directed mutants were identified that stabilise both the capped and uncapped conformations of b'x. Furthermore, the binding of x was shown to compete with peptide ligands and could prove to be an important physiological mechanism controlling access to the hydrophobic binding site. The movement of the x linker in gating the binding site could also lead to wider structural arrangement of the protein and control other aspects of PDI structure and function. This study focuses on the characterisation of the smallest PDI fragment with isomerase activity, b'xa'c, to further understand the role of x capping and its interaction with adjacent b' and a' domains. Mutants of b'xa'c, which in b'x favoured capping or uncapping of the ligand binding site, were generated by site-directed mutagenesis. All b'xa'c proteins presented as a mixture of monomer and dimer, which on gel filtration presented with larger hydrodynamic volumes than expected for globular proteins of similar sizes. Denaturation studies using guanidine hydrochloride showed that the capping 1272A mutant of b'xa'c presented with a higher conformational stability than WT b'xa'c, whereas the uncapping mutant L343A was less conformationally stable than WT and 1272A b'xa'c. b'xa'c proteins presented with a biphasic denaturation curve in which the first phase could be attributed to the unfolding of the a' domain and the second phase was due to b'x unfolding. NMR studies of b'xa'c proved challenging due to broad and poorly resolved spectra. Studies on b'x and x'ac were carried out as a stepping stone to the investigations of b'xa'c. The oxidation state of the a' domain, temperature and pH had a significant effect on the line widths seen for b'xa'c, and allowed the backbone resonance assignment of xa'c and I272A b'xa'c to be carried out. Relaxation dynamics studies showed that the a' domain has a more flexible backbone than b'x and that neighbouring domains affect the conformational behaviour of one another. NMR and intrinsic fluorescence showed no conclusive evidence of capping of the ligand binding site by the x linker region in b'xa'c, but mutants 1272A, L343A and D346A1D34A had a significant effect on the conformational stability of b'xa'c.
Feedforward control for a 15-MW wind turbine using a spinner-mounted single-beam lidar
Creators: name: Fu, Wei
name: Guo, Feng
name: Schlipf, David
name: Peña, Alfredo
Publisher: name: Zenodo
Year: 2023
Subjects: lidar-assisted control
spinner lidars
nacelle lidars

description: Presentation at the Wind Energy Science Conference 2023 as part of the Mini Symposium "IEA Wind Task 52: Lidar-Assisted Control, Turbulence Estimation, and Digitalization" Feedforward blade pitch control is one of the most promising lidar-assisted control strategies due to its significant improvement in rotor speed regulation and fatigue load reduction. A high-quality preview of the rotor-effective wind speed is a key element to control benefits. In this work, a single-beam continuous-wave or a pulsed lidar system is simulated in the spinner of a bottom-fixed IEA 15MW wind turbine. The single-beam lidar can rotate with the wind turbine rotor and scan the inflow with a circular pattern, which mimics a multiple-beam nacelle lidar at a lower cost. Also, the spinner-based lidar has an unimpeded view of the inflow without intermittent blockage from the rotating blade. The focus distance and the cone angle of the spinner-based single-beam lidar are optimized for the best wind preview quality based on a rotor-effective wind speed coherence model. Then, the control benefits of using the optimized spinner-based lidar are evaluated for an above-rated wind speed in OpenFAST with an embedded lidar simulator and virtual four-dimensional Mann turbulence fields considering the wind evolution. Results are compared against those using a single-beam nacelle-based lidar. We found that the optimum scanning configurations of both CW and pulsed spinner-based single-beam lidars lead to a lidar scan radius of 0.6 of the rotor radius. Also, results show that a single-beam lidar mounted in the spinner brings much more control benefits than the one based on the nacelle, and it can be as helpful as a 4-beam CW nacelle lidar for feedforward control.
title: Interdisciplinarité et Eco-complexité
Creators: name: Robert Chenorkian
Publisher: name: LabEx DRIIHM
Year: 2020
Subjects: subject: Interdisciplinarité
subject: Complexité
subject: Observatoire Hommes-Milieux
subject: Sciences de l'environnement
subject: Environmental Sciences
subject: domain_sde

description: Il s’agit ici d’évoquer une solution à la construction de l’interdisciplinarité et du traitement de la complexité, qui sont mises en œuvre dans le système du CNRS-INEE OHM-DRIIHM depuis 2007 pour les OHM et 2012 pour le DRIIHM et qui répond en partie à ces interrogations.Ce texte n'est pas un article mais une suite de réflexions, chacune décrivant le système OHM-DRIIHM selon une perspective propre. Il peut donc y avoir quelques redites. Elles montrent seulement qu'une même action est perceptible depuis plusieurs points d'observation. Il y alors généralement des différences selon ces points de vue.
An energy-conserving, particle dominated, time-dependent model of 3C58 and its observability at high-energies
Creators: name: Torres, Diego F.
name: Cillis, Analia N.
name: Rodriguez, Jonatan Martin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a time-dependent spectral model of the nebula 3C58 and compare it with available data. The model is for a leptonic nebula, in which particles are subject to synchrotron, inverse Compton, self-synchrotron Compton, adiabatic, and bremsstrahlung processes. We find that 3C58 is compatible with being a particle dominated nebula, with a magnetic field of 35$μ$G. A broken power law injection fits well the multi-frequency data, with a break energy at about 40 GeV. We find that 3C58 is not expected to appear in VERITAS or MAGIC II, unless the local IR background is a factor of \sim20 off Galactic models averages. For cases in which the CMB dominates the inverse Compton contribution, we find that 3C58 will not be visible either for the Cherenkov Telescope Array.
description: Accepted for publication in The Astrophysical Journal Letters
Effects of a planetesimal debris disk on stability scenarios for the extrasolar planetary system HR 8799
Creators: name: Moore, Alexander J.
name: Quillen, Alice C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: HR 8799 is a four planet system that also hosts a debris disk. By numerically integrating both planets and a planetesimal disk, we find interactions between an exterior planetesimal disk and the planets can influence the lifetime of the system. We first consider resonant planetary configurations that remained stable for at least 7 Myrs sans debris disk. An exterior debris disk with only 1 per cent the mass of the outermost planet (approximately a Neptune mass) was sufficiently large enough to pull the system out of resonance after 2 to 6 Myrs. Secondly, we consider configurations which are unstable in less than a few hundred thousand years. We find that these can be stabilized by a debris disk with a mass of more than 10 per cent that of the outermost planet. Our two sets of simulations suggest that estimates of the long term stability of a planetary system should take into account the role of the debris disk.
description: 11 pages, 5 figures
Inconsistent thermostatistics and negative absolute temperatures
Creators: name: Dunkel, Jörn
name: Hilbert, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A considerable body of experimental and theoretical work claims the existence of negative absolute temperatures in spin systems and ultra-cold quantum gases. Here, we clarify that such findings can be attributed to the use of a popular yet inconsistent entropy definition, which violates fundamental thermodynamic relations and fails to produce sensible results for simple analytically tractable classical and quantum systems. Within a mathematically consistent thermodynamic formalism, based on an entropy concept originally derived by Gibbs, absolute temperature remains positive even for systems with bounded spectrum. We address spurious arguments against the Gibbs formalism and comment briefly on heat engines with efficiencies greater than one.
description: 19 pages, 1 figure; comments welcome
Design of a PI-Controller Based on Time-Domain Specification Utilizing the Parameter Space Approach
Creators: name: Popp, Eduard
name: Tantau, Mathias
name: Wielitzka, Mark
name: Giebert, Dennis
name: Ortmaier, Tobias
Publisher: name: Frankfurt ; München [u.a.] : Elsevier
Year: 2020
Subjects: subject: automotive control
subject: control system design
subject: algebraic approaches
subject: PI controller
subject: performance analysis
subject: article
subject: Dewey Decimal Classification::600 | Technik

description: In automotive application PI and PID controllers are widely used. Commonly the controller parametrization is performed in a heuristic manner in the vehicle at different operating points. Model-based approaches offer many advantages like a reduced effort of the design process and a more systematically investigation of the parameter set. Circumventing experiments at the vehicle is not feasible, however the goal is to achieve a significant reduction of this part of work. The aim of this paper is to find the controller parameter region, that ensures compliance with defined measures of the controller performance in time domain. On the basis of the parameter space approach these measures need to be transferred into the s-domain, which is shown exemplary for a second order system and a PI-controlled integrator system. The latter serves as a simple vehicle drive train model for the design of the engine idle speed controller.
ALPRS - A New Approach for License Plate Recognition using the Sift Algorithm
Creators: name: da Silva, Francisco Assis
name: Artero, Almir Olivette
name: de Paiva, Maria Stela Veludo
name: Barbosa, Ricardo Luis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper presents a new approach for the automatic license plate recognition, which includes the SIFT algorithm in step to locate the plate in the input image. In this new approach, besides the comparison of the features obtained with the SIFT algorithm, the correspondence between the spatial orientations and the positioning associated with the keypoints is also observed. Afterwards, an algorithm is used for the character recognition of the plates, very fast, which makes it possible its application in real time. The results obtained with the proposed approach presented very good success rates, so much for locating the characters in the input image, as for their recognition.
On the Progenitor of Binary Neutron Star Merger GW170817
Creators: name: Abbott, B.P.
name: Et Al.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: binaries: general
subject: Gravitationswelle
subject: gravitational waves
subject: stars: kinematics and dynamics
subject: stars: neutron
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: On 2017 August 17 the merger of two compact objects with masses consistent with two neutron stars was discovered through gravitational-wave (GW170817), gamma-ray (GRB 170817A), and optical (SSS17a/AT 2017gfo) observations. The optical source was associated with the early-type galaxy NGC 4993 at a distance of just ~40 Mpc, consistent with the gravitational-wave measurement, and the merger was localized to be at a projected distance of ~2 kpc away from the galaxy's center. We use this minimal set of facts and the mass posteriors of the two neutron stars to derive the first constraints on the progenitor of GW170817 at the time of the second supernova (SN). We generate simulated progenitor populations and follow the three-dimensional kinematic evolution from binary neutron star (BNS) birth to the merger time, accounting for pre-SN galactic motion, for considerably different input distributions of the progenitor mass, pre-SN semimajor axis, and SN-kick velocity. Though not considerably tight, we find these constraints to be comparable to those for Galactic BNS progenitors. The derived constraints are very strongly influenced by the requirement of keeping the binary bound after the second SN and having the merger occur relatively close to the center of the galaxy. These constraints are insensitive to the galaxy's star formation history, provided the stellar populations are older than 1 Gyr.
An empirical analysis of rural finance and its impacts on household vulnerability in Thailand
Creators: name: Rungruxsirivorn, Ornsiri
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Rural finance
subject: vulnerability to poverty
subject: risk coping strategies
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
Creating Community for Early-Career Geoscientists: Student involvement in geoscience unions: A case study from hydrology
Creators: name: Berghuijs, Wouter R.
name: Harrigan, Shaun
name: Kipnis, Evan L.
name: Dogulu, Nilay
name: Floriancic, Marius
name: Müller, Hannes
name: Pohle, Ina
name: Saia, Sheila M.
name: Sedlar, Frank
name: Smoorenburg, Maarten
name: Teutschbein, Claudia
name: Van Emmerik, Tim
Publisher: name: Hoboken, NJ : Wiley
Year: 2015
Subjects: subject: American Geophysical Union
subject: European Geosciences Union
subject: Hydrology
subject: Organization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: 551

description: The American Geophysical Union (AGU) and the European Geosciences Union (EGU) play central roles in nurturing the next generation of geoscientists. Students and young scientists make up about one-quarter of the unions’ active memberships [American Geophysical Union, 2013; European Geosciences Union, 2014], creating a major opportunity to include a new generation of geoscientists as more active contributors to the organizations’ activities, rather than merely as consumers.
An experimental set up to investigate non-invasive detection of hip prosthesis loosening
Creators: name: Eshra, Ayman
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Hip prosthesis
subject: loosening
subject: vibration
subject: acoustic
subject: transfer function
subject: natural frequencies
subject: Nyquist plot
subject: FIR-filter approximation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Low-temperature criticality of martensitic transformations of Cu nanoprecipitates in α-Fe
Creators: name: Erhart, Paul
name: Sadigh, Babak
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanoprecipitates form during nucleation of multiphase equilibria in phase segregating multicomponent systems. In spite of their ubiquity, their size-dependent physical chemistry, in particular at the boundary between phases with incompatible topologies, is still rather arcane. Here we use extensive atomistic simulations to map out the size-temperature phase diagram of Cu nanoprecipitates in α-Fe. The growing precipitates undergo martensitic transformations from the body-centered cubic (BCC) phase to multiply-twinned 9R structures. At high temperatures, the transitions exhibit strong first-order character and prominent hysteresis. Upon cooling the discontinuities become less pronounced and the transitions occur at ever smaller cluster sizes. Below 300 K the hysteresis vanishes while the transition remains discontinuous with a finite but diminishing latent heat. This unusual size-temperature phase diagram results from the entropy generated by the soft modes of the BCC-Cu phase, which are stabilized through confinement by the α-Fe lattice.
description: 5 pages, 5 figures