cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimization of fermentation medium and conditions for enhancing valinomycin production by Streptomyces sp. ZJUT-IFE-354
Creators: name: Zhang, Dong
name: Bao, Yingling
name: Ma, Zhi
name: Zhou, Jiawei
name: Chen, Hanchi
name: Lu, Yuele
name: Zhu, Linjiang
name: Chen, Xiaolong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: Valinomycin is a cyclodepsipeptide antibiotic with a broad spectrum of biological activities, such as antiviral, antitumor, and antifungal activities. However, the low yield of valinomycin often limits its applications in medicine, agriculture, and industry. In our previous report, Streptomyces sp. ZJUT-IFE-354 was identified as a high-yielding strain of valinomycin. In this study, Plackett–Burman design (PBD) and response surface methodology (RSM) were used to optimize components of medium. The optimal medium contained 31 g/L glucose, 22 g/L soybean meal, and 1.6 g/L K2HPO4·3H2O, which could generate 262.47 ± 4.28 mg/L of valinomycin. Then, the culture conditions were optimized by a one-factor-at-a-time (OFAT) approach. The optimal conditions for the strain included a seed age of 24 h, an inoculum size of 8% (v/v), an incubation temperature of 28 °C, an initial pH of 7.2, an elicitor of 0.1% Bacillus cereus feeding at 24 h cultivation, and the feeding of 0.6% L-valine at 36 h cultivation. The final valinomycin production increased to 457.23 ± 9.52 mg/L, which was the highest yield ever reported. It highlights that RSM and OFAT may be efficient methods to enhance valinomycin production by Streptomyces sp. ZJUT-IFE-354.
One half log discriminant and division polynomials
Creators: name: de Jong, Robin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G20 (Primary) 11B83 (Secondary)

description: L. Szpiro and T. Tucker recently proved that under mild conditions, the valuation of the minimal discriminant of an elliptic curve with semistable reduction over a discrete valuation ring can be expressed in terms of intersections between n-torsion and 2-torsion, where n tends to infinity. The argument of Szpiro and Tucker is geometric in nature. We give a proof based on the arithmetic of division polynomials, and generalize the result to the case of hyperelliptic curves.
description: 6 pages
Von Anfang an – Archäologie in Nordrhein-Westfalen
Creators: name: Redaktion, Die
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2019

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 46, Nr. 4 (2005): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
A Cold Milky Way Stellar Stream in the Direction of Triangulum
Creators: name: Bonaca, Ana
name: Geha, Marla
name: Kallivayalil, Nitya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present evidence for a new Milky Way stellar tidal stream in the direction of the Andromeda and Triangulum (M31 and M33) galaxies. Using a matched-filter technique, we search the Sloan Digital Sky Survey Data Release 8 by creating stellar density maps which probe the Milky Way halo at distances between 8 and 40 kpc. A visual search of these maps recovers all of the major known stellar streams, as well as a new stream in the direction of M31/M33 which we name the Triangulum stream. The stream spans 0.2 deg by 12 deg on the sky, or 75 pc by 5.5 kpc in physical units with a best fitting distance of 26+/-4 kpc. The width of the stream is consistent with being the tidal remnant of a globular cluster. A color magnitude diagram of the stream region shows an overdensity which, if identified as a main sequence turn-off, corresponds to an old (~12 Gyr) and metal-poor ([Fe/H] \sim -1.0 dex) stellar population. Future kinematic studies of this and similar cold streams will provide tight constraints on the shape of the Galactic gravitational potential.
description: 6 pages, 4 figures; submitted to ApJL including the referee's comments; for color version of all-sky maps see http://www.astro.yale.edu/abonaca/research/halo.html
Some Varieties of Lie Rings
Creators: name: Chen, Yin
name: Zhang, Runxuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Rings and Algebras (math.RA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 17A30, 17B30

description: In this paper, several theorems of Macdonald \cite{Mac1961,Mac1962} on the varieties of nilpotent groups will be generalized to the case of Lie rings. We consider three varieties of Lie rings of any characteristic associated with some equations (see Eqs. (\ref{eq:1.1})-(\ref{eq:1.3}) below). We prove that each Lie ring in variety $(\ref{eq:1.1})$ is nilpotent of exponent at most $n+2$; if $L$ is a Lie ring in variety $(\ref{eq:1.2})$, then $L^{2}$ is nilpotent of exponent at most $n+1$; and each Lie ring in variety $(\ref{eq:1.3})$ is solvable of length at most $n+1$. Finally, we also discuss some varieties of solvable Lie rings and the varieties of Lie rings defined by the properties of subrings.
description: 9 pages,to appear in Asian-Eur. J. Math
Optical quantum computing with photons of arbitrarily low fidelity and purity
Creators: name: Rohde, Peter P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Linear optics quantum computing (LOQC) is a leading candidate for the implementation of large scale quantum computers. Here quantum information is encoded into the quantum states of light and computation proceeds via a linear optics network. It is well known that in such schemes there are stringent requirements on the spatio-temporal structure of photons -- they must be completely indistinguishable and of very high purity. We show that in the Boson-sampling model for LOQC these conditions may be significantly relaxed. We present evidence that by increasing the size of the system we can implement a computationally hard algorithm even if our photons have arbitrarily low fidelity and purity. These relaxed conditions make Boson-sampling LOQC within reach of present-day technology.
description: Version submitted to Phys. Rev. A
Stability of xenon oxides at high pressures
Creators: name: Zhu, Qiang
name: Jung, Daniel Y.
name: Oganov, Artem R.
name: Glass, Colin W.
name: Gatti, Carlo
name: Lyakhov, Andriy O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Xenon, which is quite inert under ambient conditions, may become reactive under pressure. The possibility of formation of stable xenon oxides and silicates in the interior of the Earth could explain the atmospheric missing xenon paradox. Using the ab initio evolutionary algorithm, we predict the thermodynamical stabilization of Xe-O compounds at high pressures (XeO, XeO2 and XeO3 at pressures above 83, 102 and 114 GPa, respectively). Our calculations indicate large charge transfer in these oxides, suggesting that large electronegativity difference and pressure are the key factors favoring the formation of xenon compounds. Xenon compounds in the Earth's mantle, however, cannot directly explain the missing xenon paradox: xenon oxides are unstable in equilibrium with metallic iron in the Earth's lower mantle, while xenon silicates are predicted to spontaneously decompose at all mantle pressures (<136 GPa). This does not preclude Xe atoms from being retained in defects of mantle silicates and oxides.
description: 6 page, 3 figures; Nature Chemistry, 2013 January; http://www.nature.com/nchem/journal/vaop/ncurrent/abs/nchem.1497.html
Begonia boliviensis A. DC.
Creators: name: Moonlight, Peter
name: Fuentes, Alfredo F.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Cucurbitales
Begoniaceae
Begonia
Begonia boliviensis

description: 1.1.Begonia boliviensis A.DC., Ann. Sci. Nat. Bot. IV (11): 122 (1859). – Type: Bolivia,    [Chuquisaca Department, Prov. Hernando Siles], ‘Prov. Acero’, xi–xii 1845, H.A. Weddell 3632 (lectotype P [P01900760] first stage designated in: Revista Univ. (Cuzco) 33(87): 78 (1944) by Smith, L.B. & Schubert, B.G.; second stage designated in: Fl. Argentina 17: 4 (2017) by Delfini, C.; isolectotypes F ex P [F0077407 F], P [P01900761]); Bolivia, [Santa Cruz Department], Prov. Cordillera, xi–xii 1845, H. A. Weddell 4032 (syntype G-DC ex P [photograph F#7326], P [P05586847]).
 L.B. Smith & B.G. Schubert, Revista Univ. (Cuzco) 33(87): 78 (1944); R.C. Foster, Contr. Gray Herb. 184: 137 (1958); M.C. Tebbitt, Begonian 79: 97 (2012); D.C. Wasshausen et al. in P.M. JØrgensen et al. (eds), Cat. Bolivia, Monogr. Syst. Bot. Missouri Bot. Gard. 127: 383 (2013); Delfini, C. in Zuloaga, F.O. & Belgrano, M.J. (eds), Fl. Argentina 17: 4 (2017); M.C. Tebbitt, Tuberous Begonias, a Monograph of Begonia sect. Australes 69 (2020).
 Distribution. Bolivia and Argentina.
 Nomenclatural notes. Alphonse Pyramus de Candolle described Begonia boliviensis A.DC. based on material collected by H. A. Weddell. There are three sheets in Paris herbarium that were collected by Weddell and match de Candolle’s description: H.A. Weddell 3632 (two sheets) and 4032 (one sheet). None of these sheets have determination slips on them to indicate they were seen by de Candolle, but there is a sheet of H.A. Weddell 4032 in de Candolle’s herbarium in Geneva that he took from Paris herbarium and annotated as Begonia boliviensis, demonstrating that he considered this collection to be B. boliviensis (photograph F#7326). H.A. Weddell 4032 in Paris or Geneva would therefore be the logical choice of a lectotype. Unfortunately, Smith & Schubert (1944a) cited H.A. Weddell 3632 in Paris as the type. This counts as an effective first-stage lectotypification, because there are two sheets of this collection in Paris. Delfini (2017) selected sheet P01900760 as the lectotype, which effected the second stage of lectotypification.
 Identification notes. This species is highly distinct and best recognised by its combination of a tuber, lanceolate leaf blades with a long-acuminate apex, and projecting tepals on both the staminate and pistillate flower. The androecium is also unique among Bolivian Begonia and consists of 30–100 stamens attached along the length of a 0.4–2.5 cm long column.
description: Published as part of Moonlight, Peter & Fuentes, Alfredo F., 2022, AN UPDATED CHECKLIST AND KEY TO THE SPECIES OF BOLIVIAN BEGONIA, INCLUDING ONE NEW SPECIES, pp. 1-66 in Edinburgh Journal of Botany 79 (407) on pages 9-10, DOI: 10.24823/EJB.2022.407, http://zenodo.org/record/10553332
Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario
Creators: name: Yang, Rui-Zhi
name: Yuan, Qiang
name: Feng, Lei
name: Fan, Yi-Zhong
name: Chang, Jin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, several groups identified a tentative $γ$-ray line signal with energy $\sim 130$ GeV in the central Galaxy from the Fermi-LAT data. %The morphology study shows that the signal is consistent with dark matter %annihilation, but with an offset $\sim 220$ pc ($1.5^{\circ}$) of the %center from the Galactic center Sgr A$^{\star}$, Such a $γ-$ray line can be interpreted as the signal of dark matter annihilation. However, the offset $\sim 220$ pc ($1.5^{\circ}$) of the center of the most prominent signal region from the Galactic center Sgr A$^{\star}$ has been thought to challenge the dark matter annihilation interpretation. Considering the fact that such a 130 GeV $γ$-ray line signal consists of only $\sim14$ photons, we suggest that the "imperfect" consistency of these photons with the expected dark matter distribution is due to the limited statistics. The offset will be smaller as more signal photons have been collected in the near future. Our Monte Carlo simulation supports the above speculation.
description: 4 pages, 2 figures, Phys. Lett. B in press
Possibility of valence-fluctuation mediated superconductivity in Cd-doped CeIrIn$_5$ probed by In-NQR
Creators: name: Yashima, M.
name: Tagami, N.
name: Taniguchi, S.
name: Unemori, T.
name: Uematsu, K.
name: Mukuda, H.
name: Kitaoka, Y.
name: Ota, Y.
name: Honda, F.
name: Settai, R.
name: Onuki, Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on a pressure-induced evolution of exotic superconductivity and spin correlations in CeIr(In$_{1-x}$Cd$_{x}$)$_5$ by means of In-Nuclear-Quadrupole-Resonance (NQR) studies. Measurements of an NQR spectrum and nuclear-spin-lattice-relaxation rate $1/T_1$ have revealed that antiferromagnetism induced by the Cd-doping emerges locally around Cd dopants, but superconductivity is suddenly induced at $T_c$ = 0.7 and 0.9 K at 2.34 and 2.75 GPa, respectively. The unique superconducting characteristics with a large fraction of the residual density of state at the Fermi level that increases with $T_c$ differ from those for anisotropic superconductivity mediated by antiferromagnetic correlations. By incorporating the pressure dependence of the NQR frequency pointing to the valence change of Ce, we suggest that unconventional superconductivity in the CeIr(In$_{1-x}$Cd$_{x}$)$_5$ system may be mediated by valence fluctuations.
description: Accepted for publication in Physical Review Letters
De simia Heidelbergensi. Das Märchen vom Heidelberger Affen, erzählt von Michael von Albrecht, erklärt von Michael Lobe
Creators: name: Fritsch, Andreas
Publisher: name: Forum Classicum
Year: 2019

description: Rezension zu: De simia Heidelbergensi. Das Märchen vom Heidelberger Affen, erzählt von Michael von Albrecht, erklärt von Michael Lobe. Stuttgart, Leipzig: Ernst Klett Verlag 2018, 40 S. ISBN 978-3-12-623191-6. – Dazu: Lehrerheft,
30 S. ISBN: 978-3-12-623192-3
description: Forum Classicum, Nr. 4 (2018): Forum Classicum
Begonia chrysantha Tebbitt
Creators: name: Moonlight, Peter
name: Fuentes, Alfredo F.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Cucurbitales
Begoniaceae
Begonia
Begonia chrysantha

description: 1.2.Begonia chrysantha Tebbitt, Brittonia 67(3): 224, fig. 2 (2015).   – Type: Bolivia, Chuquisaca Department, Prov. Belisario Boeto, Nuevo Mundo, 18°59′S, 64°17′W, 2200 m, 3 i 1996, J.R.I. Wood 10351 (holotype HSB, isotype K).
 M.C. Tebbitt, Tuberous Begonias, a Monograph of Begonia sect. Australes 73 (2020).
 Distribution. Endemic to Bolivia and Chuquisaca Department.
 Identification notes. Begonia chrysantha is distinguished as a tuberous, caulescent species with notched, vivid golden-yellow tepals and a red indument. It can be distinguished from Begonia heliantha Tebbitt by its non-glandular hairs and from B. pearcei by its acute leaf apices (vs acuminate leaf apices). It also differs in its hairs, which are red throughout or red at the apices, whereas those of Begonia pearcei are white.
description: Published as part of Moonlight, Peter & Fuentes, Alfredo F., 2022, AN UPDATED CHECKLIST AND KEY TO THE SPECIES OF BOLIVIAN BEGONIA, INCLUDING ONE NEW SPECIES, pp. 1-66 in Edinburgh Journal of Botany 79 (407) on page 10, DOI: 10.24823/EJB.2022.407, http://zenodo.org/record/10553332
title: Human vs. AI: Investigating Consumers’ Context-Dependent Purchase Intentions for Algorithm-Created Content
Creators: name: Rix, Jennifer
name: Rußell, Robert
name: Rühr, Alexander
name: Hess, Thomas
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2022

description: The accelerating capabilities of systems brought about by advances in Artificial Intelligence challenge the traditional notion of systems as tools. Systems’ increasingly agentic and collaborative character offers the potential for a new user-system interaction paradigm: Teaming replaces unidirectional system use. Yet, extant literature addresses the prerequisites for this new interaction paradigm inconsistently, often not even considering the foundations established in human teaming literature. To address this, this study utilizes a systematic literature review to conceptualize the drivers of the perception of systems as teammates instead of tools. Hereby, it integrates insights from the dispersed and interdisciplinary field of human-machine teaming with established human teaming principles. The creation of a team setting and a social entity, as well as specific configurations of the machine teammate’s collaborative behaviors, are identified as main drivers of the formation of impactful human-machine teams.
Major Galaxy Mergers Only Trigger the Most Luminous AGN
Creators: name: Treister, E.
name: Schawinski, K.
name: Urry, C. M.
name: Simmons, B. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using multiwavelength surveys of active galactic nuclei across a wide range of bolometric luminosities (10^{43}
description: Accepted for publication by Astrophysical Journal Letters, 6 pages in emulateapj format, 3 figures
Vortices in fermion droplets with repulsive dipole-dipole interactions
Creators: name: Eriksson, G.
name: Cremon, J. C.
name: Manninen, M.
name: Reimann, S. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Vortices are found in a fermion system with repulsive dipole-dipole interactions, trapped by a rotating quasi-two-dimensional harmonic oscillator potential. Such systems have much in common with electrons in quantum dots, where rotation is induced via an external magnetic field. In contrast to the Coulomb interactions between electrons, the (externally tunable) anisotropy of the dipole-dipole interaction breaks the rotational symmetry of the Hamiltonian. This may cause the otherwise rotationally symmetric exact wavefunction to reveal its internal structure more directly.
description: 5 pages, 5 figures
The Panchromatic Hubble Andromeda Treasury III. Measuring Ages and Masses of Partially Resolved Stellar Clusters
Creators: name: Beerman, Lori C.
name: Johnson, L. Clifton
name: Fouesneau, Morgan
name: Dalcanton, Julianne J.
name: Weisz, Daniel R.
name: Seth, Anil C.
name: Williams, Ben F.
name: Bell, Eric F.
name: Bianchi, Luciana C.
name: Caldwell, Nelson
name: Dolphin, Andrew E.
name: Gouliermis, Dimitrios A.
name: Kalirai, Jason S.
name: Larsen, Søren S.
name: Melbourne, Jason L.
name: Rix, Hans-Walter
name: Skillman, Evan D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The apparent age and mass of a stellar cluster can be strongly affected by stochastic sampling of the stellar initial mass function, when inferred from the integrated color of low mass clusters (less than ~10^4 solar masses). We use simulated star clusters to show that these effects are minimized when the brightest, rapidly evolving stars in a cluster can be resolved, and the light of the fainter, more numerous unresolved stars can be analyzed separately. When comparing the light from the less luminous cluster members to models of unresolved light, more accurate age estimates can be obtained than when analyzing the integrated light from the entire cluster under the assumption that the initial mass function is fully populated. We show the success of this technique first using simulated clusters, and then with a stellar cluster in M31. This method represents one way of accounting for the discrete, stochastic sampling of the stellar initial mass function in less massive clusters and can be leveraged in studies of clusters throughout the Local Group and other nearby galaxies.
description: 11 pages, 8 figures, accepted for publication in ApJ
Erfahrungsbericht bei der Umsetzung der VWS Type 3 : Interaktionen in einer Maintenance-Anwendung
Creators: name: Islam, Rafiul
name: Wand, A.
name: Röder, Ch.
name: Stamm, S.
name: Dayeg, A.
name: Winter, F.
name: Salaj, L.
name: Noske, H.
name: Denkena, B.
name: Diedrich, Christian
Publisher: name: Otto von Guericke University Library, Magdeburg, Germany
Year: 2023
Subjects: subject: Digital Twin
subject: Interaktionsmuster
subject: Maintenance
subject: VWS
subject: Peer-to-peer
subject: 621.3

description: Intelligente Fertigungssysteme integrieren heutzutage den operativen Produktionsbetrieb mit den dispositiven Aufgaben rund um das MES (Manufacturing Execution System). In diesem Beitrag wird anhand einer instandhaltungstechnischen Aufgabe eine dezentrale Lösung für die Ableitung des Wartungsbedarfes mittels Verwaltungsschalen (VWS) und die Terminplanung durch das MES vorgestellt. Diese beruht auf den Typ 3 VWS, die mittels I4.0 Sprache die notwendigen Nachrichten austauschen. Diese Nachrichten basieren auf Kommunikationsmustern des MES Standards IEC 62264 (ISA 95). Die Architektur wird vorgestellt, mit den verwendeten Interaktionslösungen untersetzt und die daraus resultierenden Erfahrungen erläutert.
Local Derivations on Jordan Triples
Creators: name: Mackey, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 17C65

description: R.V. Kadison defined the notion of local derivation on an algebra and proved that every continuous local derivation on a von Neumann algebra is a derivation (Kadison 1990). We provide the analogous result in the setting of Jordan triples.
Laypeople's Collaborative Immersive Virtual Reality Design Discourse in Neighborhood Design
Creators: name: Chowdhury, Shuva
name: Schnabel, Marc Aurel
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 120507 Urban Analysis and Development
subject: FOS: Social and economic geography
subject: 120101 Architectural Design
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 120599 Urban and Regional Planning not elsewhere classified
subject: 120508 Urban Design
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: 120199 Architecture not elsewhere classified
subject: FOS: Civil engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The article discusses design communication and participation of laypeople in a virtual participatory urban design process. We speculate that an immersive virtual environment facilitated instrument can allow laypeople to take part actively as designers in the early stage of urban design ideation and generation. We have developed a design communication framework where laypeople can participate in design discourse on a neighborhood's future urban form. The strategy describes an urban design intent, which is informed by the development procedure of an instrument and workflow to engage participants. The integration of the instrument and the engagement procedure enable continuous designing of urban form by laypeople. A protocol analysis has been undertaken to investigate design communication. A coding scheme is applied to investigate, analyse, and understand how laypeople communicate with the design instrument and control design in the virtual environment. Through engaging non-experts, the research impacts on the perceptual affordance created by immersive 3D buildings artifacts and verbal conversation. The protocol analysis validated the setup so that subsequent studies can address the meaningfulness of such design conversations.
Phase Coherent Transport in Graphene Nanoribbons and Graphene Nanoribbon Arrays
Creators: name: Minke, S.
name: Bundesmann, J.
name: Weiss, D.
name: Eroms, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have experimentally investigated quantum interference corrections to the conductivity of graphene nanoribbons at temperatures down to 20 mK studying both weak localization (WL) and universal conductance fluctuations (UCF). Since in individual nanoribbons at millikelvin temperatures the UCFs strongly mask the weak localization feature we employ both gate averaging and ensemble averaging to suppress the UCFs. This allows us to extract the phase coherence length from both WL and UCF at all temperatures. Above 1 K, the phase coherence length is suppressed due to Nyquist scattering whereas at low temperatures we observe a saturation of the phase coherence length at a few hundred nanometers, which exceeds the ribbon width, but stays below values typically found in bulk graphene. To better describe the experiments at elevated temperatures, we extend the formula for 1D weak localization in graphene, which was derived in the limit of strong intervalley scattering, to include all elastic scattering rates.
description: 8 pages, 6 figures, accepted by PRB
Universal decoding for arbitrary channels relative to a given class of decoding metrics
Creators: name: Merhav, Neri
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider the problem of universal decoding for arbitrary unknown channels in the random coding regime. For a given random coding distribution and a given class of metric decoders, we propose a generic universal decoder whose average error probability is, within a sub-exponential multiplicative factor, no larger than that of the best decoder within this class of decoders. Since the optimum, maximum likelihood (ML) decoder of the underlying channel is not necessarily assumed to belong to the given class of decoders, this setting suggests a common generalized framework for: (i) mismatched decoding, (ii) universal decoding for a given family of channels, and (iii) universal coding and decoding for deterministic channels using the individual-sequence approach. The proof of our universality result is fairly simple, and it is demonstrated how some earlier results on universal decoding are obtained as special cases. We also demonstrate how our method extends to more complicated scenarios, like incorporation of noiseless feedback, and the multiple access channel.
description: 25 pages; Submitted to IEEE Transactions on Information Theory
Begonia cinnabarina Hook.
Creators: name: Moonlight, Peter
name: Fuentes, Alfredo F.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Cucurbitales
Begoniaceae
Begonia
Begonia cinnabarina

description: 1.3.Begonia cinnabarina Hook., Bot. Mag. 75: t. 4483 (1849).   – Type: t. 4883 in W.J. Hooker, Bot. Mag. 75: t. 4483, designated in: Edinburgh J. Bot. 75(2): 252 (2018) by Tebbitt, M.C., Andrada, A.R., Bulacio, E., Parada, G.A. & Ayharde, H.   L.B. Smith & B.G. Schubert, Revista Univ. (Cuzco) 33(87): 77 (1944); R.C. Foster, Contr. Gray Herb. 184: 137 (1958); D.C. Wasshausen et al. in P.M. JØrgensen et al. (eds), Cat. Bolivia, Monogr. Syst. Bot. Missouri Bot. Gard. 129: 384 (2013); M.C. Tebbitt et al., Edinburgh J. Bot. 75(2): 153 (2020); M.C. Tebbitt, Tuberous Begonias, a Monograph of Begonia sect. Australes 78 (2020).
 Begonia aurantiaca hort. ex Planch. nom. rej., Fl. Serres Jard. Eur. 8: 530 (1853).
 Begonia micranthera var. fimbriata L.B.Sm. & B.G.Schub., Darwiniana 4: 98 (1941b). – Type: Argentina, Prov. Salta, Hills back of Tartagal, [22°30′S, 63°49′W], 500 m, 23 ii 1937, J. West 8413 (holotype GH [GH00068253], isotype MO [2: MO-313008, MO-1643427], NA [NA0026189], UC [UC565008]).
 R.C. Foster, Contr. Gray Herb. 184: 137 (1958); M.C. Tebbitt et al., Edinburgh J. Bot. 75(2): 153 (2020).
 Distribution. Bolivia and Argentina.
 Identification notes. Begonia cinnabarina is best recognised by its flowers with spreading, broadly ovate and bright cinnabar-red tepals with rounded apices. Two other tuberous Bolivian species have bright red tepals: Begonia veitchii Hook.f. and B. boliviensis. The former is best distinguished by its leaf blades, which have no distinct apex, whereas the tepals of Begonia boliviensis are lanceolate with acuminate apices and are held projecting.
description: Published as part of Moonlight, Peter & Fuentes, Alfredo F., 2022, AN UPDATED CHECKLIST AND KEY TO THE SPECIES OF BOLIVIAN BEGONIA, INCLUDING ONE NEW SPECIES, pp. 1-66 in Edinburgh Journal of Botany 79 (407) on pages 10-11, DOI: 10.24823/EJB.2022.407, http://zenodo.org/record/10553332
Pseudometrically Constrained Centroidal Voronoi Tessellations: Generating uniform antipodally symmetric points on the unit sphere with a novel acceleration strategy and its applications to Diffusion and 3D radial MRI
Creators: name: Koay, Cheng Guan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Medical Physics (physics.med-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computational Geometry (cs.CG)
subject: Metric Geometry (math.MG)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Purpose: The purpose of this work is to investigate the hypothesis that uniform sampling measurements that are endowed with antipodal symmetry play an important role when the raw data and image data are related through the Fourier relationship as in q-space diffusion MRI and 3D radial MRI. Currently, it is extremely challenging to generate large uniform antipodally symmetric point sets suitable for 3D radial MRI. A novel approach is proposed to solve this important and long-standing problem. Methods: The proposed method is based upon constrained centroidal Voronoi tessellations of the upper hemisphere with a novel pseudometric. Geometrically intuitive approach to tessellating the upper hemisphere is also proposed. Results: The average time complexity of the proposed centroidal tessellations was shown to be effectively on the order of the product of the number of iterations and the number of generators. For small sample size, the proposed method was comparable to the state-of-the-art iterative method in terms of the uniformity. For large sample size, in which the state-of-the-art method is infeasible, the reconstructed images from the proposed method has less streak and ringing artifact as compared to those of the commonly used methods. Conclusion: This work solved a long-standing problem on generating uniform sampling points for 3D radial MRI.
description: 33 pages, 5 figures
KEITH VICKERMAN - Bibliography
Creators: name: Cox, Francis
name: Gull, Keith
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Keith Vickerman was a parasitologist and protozoologist who made major contributions to our understanding of the biology of African trypanosomes, the causative agents of human sleeping sickness and nagana in cattle. His first academic post was at University College London, where he quickly mastered the techniques of electron microscopy (EM) and produced some of the best electron micrographs of parasitic protozoa at that time. He was a great believer in observation and deduction, and what began as an exercise in EM led him to investigate two of the then outstanding problems of trypanosome biology: how the parasites manage the transition from the tsetse fly vector to its mammalian host, and how they evade the host's immune response. Morphological changes, he found, were correlated with changes in the single mitochondrion and ensuring biochemical changes during the transition from a glucose-rich environment in mammalian blood to the glucose-poor tsetse gut. It was while comparing bloodstream and tsetse forms that he observed that the trypanosomes possessed a thick surface coat in the blood, which he subsequently identified as the variable antigen that was repeatedly formed and reformed and that this was the basis of antigenic variation—findings that stimulated a vast amount of interest among immunologists, biochemists and geneticists. In his later career a new problem emerged, and he found that a disease devastating stocks of the commercially important Norway lobster, Nephrops norvegicus, thought to be caused by a virus was actually caused by a protozoan, Hematodinium. Keith will always be remembered as one of the founders of modern parasitology.
Die Bedeutung des Digital Twins auf Basis einer aktiven Verwaltungsschale für Kommunikations-Komponenten : Betrachtung am Beispiel von Industriesteckverbindern
Creators: name: Huhmann, Andreas
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: Asset Administration Shell
subject: Digital Twin
subject: Connectivity
subject: Smart electrical Connector
subject: 621.3

description: Kommunikations-Komponenten sind in der industriellen Applikation eine Grundlage der Digitalisierung. Dabei wurde lange außer Acht gelassen, dass sie als reale Assets ebenfalls der Digitalisierung unterliegen. Damit rückt in dieser Betrachtung der Digital Twin von Kommunikations-Komponenten in den Mittelpunkt. Das Schlüsselelement der Digitalisierung ist die Verwaltungsschale (AAS Asset Administration Shell). Der Ursprung dieser Betrachtung ist in der vierten industriellen Revolution (Industrie 4.0) zu finden. Im Referenzarchitekturmodell ist verankert, dass auch jede industrielle Komponente einen Digital Twin besitzt. Das verbindende Element zwischen realer Komponente und Digital Twin ist die Verwaltungsschale. Steckverbinder als passive Komponenten werden zukünftig durch eine passive Verwaltungsschale repräsentiert. Die Nutzung der Verwaltungsschale vereinfacht die Integration der Komponente im Rahmen des Engineerings. In Fällen, dass der Steckverbinder smarte Zusatzfunktionen besitzt, bildet eine aktive Verwaltungsschale das Mittel der Wahl. Dabei bleibt der Charakter der Komponente erhalten und es wird verzichtet, den Steckverbinder in eine komplexe Netzwerkkomponente zu transformieren. Diese Beschränkung ist entscheidend, damit der Steckverbinder universell einsetzbar bleibt, zum Beispiel auch in einer Infrastrukturkomponente. Die aktive Verwaltungsschale kann genutzt werden, um die Zustände des Steckverbinders im Betrieb zu erfassen und Zustandsübergänge einzuleiten. Durch diese neue Betrachtung ist der smarte elektrische Connector (SmEC) in einen ganzheitlichen Ansatz für alle Steckverbinder eingebettet. Das führt zu einem skalierbaren Konzept, das applikationsabhängig den passenden Funktionsumfang zur Verfügung stellt. Allgemein wird über den Steckverbinder sehr gut transparent, welche weitreichenden Konsequenzen Industrie4.0 auf alle Assets hat. Die Erkenntnisse sind daher sehr gut auf weitere Komponenten, auch weitere Kommunikations-Komponenten, übertragbar.
TransFool: An Adversarial Attack against Neural Machine Translation Models
Creators: name: Sadrizadeh, Sahar
name: Dolamic, Ljiljana
name: Frossard, Pascal
Publisher: name: Zenodo
Year: 2023
Subjects: adversarial attack
language model
natural language processing
neural machine translation
optimization

description: This upload contains the language models utilized in the paper "TransFool: An Adversarial Attack against Neural Machine Translation Models". TransFool is an adversarial attack against NMT models. By generating adversarial examples, TransFool aims to reduce translation quality while maintaining similarity to the original sentences. These language models, along with their respective fully connected layers, are trained for the NMT models discussed in the paper. For further details on the implementation and usage of TransFool, please refer to the official GitHub repository.
Constraining the fraction of Compton-thick AGN in the Universe by modelling the diffuse X-ray background spectrum
Creators: name: Akylas, A.
name: Georgakakis, A.
name: Georgantopoulos, I.
name: Brightman, M.
name: Nandra, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This paper investigates what constraints can be placed on the fraction of Compton-thick (CT) AGN in the Universe from the modeling of the spectrum of the diffuse X-ray background (XRB). We present a model for the synthesis of the XRB that uses as input a library of AGN X-ray spectra generated by the Monte Carlo simulations described by Brightman & Nandra. This is essential to account for the Compton scattering of X-ray photons in a dense medium and the impact of that process on the spectra of obscured AGN. We identify a small number of input parameters to the XRB synthesis code which encapsulate the minimum level of uncertainty in reconstructing the XRB spectrum. These are the power-law index and high energy cutoff of the intrinsic X-ray spectra of AGN, the level of the reflection component in AGN spectra and the fraction of CT AGN in the Universe. We then map the volume of the space allowed to these parameters by current observations of the XRB spectrum in the range 3-100 keV. One of the least constrained parameters is the fraction of CT AGN. Statistically acceptable fits to the XRB spectrum at the 68% confidence level can be obtained for CT fractions in the range 5-50%. This is because of degeneracies among input parameters to the XRB synthesis code and uncertainties in the modeling of AGN spectra (e.g. reflection). The most promising route for constraining the fraction of CT AGN in the Universe is via the direct detection of those sources in high energy (>10keV) surveys. It is shown that the observed fraction of CT sources identified in the SWIFT/BAT survey, limits the intrinsic fraction of CT AGN, at least at low redshift, to 10-20% (68% confidence level). We also make predictions on the number density of CT sources that current and future X-ray missions are expected to discover. Testing those predictions will constrain the intrinsic fraction of CT AGN as a function of redshift.
description: To appear in A&A
Influence of the birthing room design on midwives' job satisfaction : a cross-sectional online survey embedded in the ‘Be-Up’ study
Creators: name: Wangler, Sonja
name: Simon, Anke
name: Meyer, Gabriele
name: Ayerle, Gertrud M.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 610

description: Background: Job satisfaction is an important factor influencing work performance, personal well-being, commitment and retention. The working environment influences job satisfaction. The design of the birthing room could influence the practice of midwives and their satisfaction. This study investigates whether the alternative design of the birthing room implemented in the randomized controlled trial ‘Be-Up’ (Birth environment-Upright position) has an impact on job satisfaction of midwives. Method: A cross-sectional survey using an online questionnaire with 50 items addressing job satisfaction and birth room design was performed. The sample (n = 312) consists of midwives whose obstetric units participated in the Be-Up study and, as comparison group, midwives working in non-study obstetric units. These two independent groups were compared using t-tests; correlations and impacts were examined. Results: The results of the T-tests revealed statistically significant higher global job satisfaction and higher satisfaction with team support of midwives in the Be-Up room. However, midwives working in customary birthing rooms were more satisfied with the design of the room. The most important predictors of job satisfaction were team factors and understaffing in both groups. Conclusion: Reasons for diminished satisfaction with the working environment in the Be-Up study may be assumed in uncertainties about emergency management in a new and unfamiliar environment. Furthermore the impact of a single redesigned room within a customary obstetric unit on job satisfaction seems small, as the room is embedded in the ward and hospital environment. More comprehensive concepts on the potential of the work environment influencing midwives’ job satisfaction are needed.
Huguette Taviani-Carozzi, La principauté lombarde de Salerne (IXe–XIe siècle). Pouvoir et société en Italie lombarde méridionale, 2 Bde., 1991
Creators: name: Becker, Alfons
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 1 (1996)
Spatial Anisotropy of Galaxy Kinematics in Sloan Digital Sky Survey Galaxy Clusters
Creators: name: Skielboe, Andreas
name: Wojtak, Radoslaw
name: Pedersen, Kristian
name: Rozo, Eduardo
name: Rykoff, Eli S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measurements of galaxy cluster kinematics are important in understanding the dynamical state and evolution of clusters of galaxies, as well as constraining cosmological models. While it is well established that clusters exhibit non-spherical geometries, evident in the distribution of galaxies on the sky, azimuthal variations of galaxy kinematics within clusters have yet to be observed. Here we measure the azimuthal dependence of the line-of-sight velocity dispersion profile in a stacked sample of 1743 galaxy clusters from the Sloan Digital Sky Survey (SDSS). The clusters are drawn from the SDSS DR8 redMaPPer catalog. We find that the line-of-sight velocity dispersion of galaxies lying along the major axis of the central galaxy is larger than those that lie along the minor axis. This is the first observational detection of anisotropic kinematics of galaxies in clusters. We show that the result is consistent with predictions from numerical simulations. Furthermore we find that the degree of projected anisotropy is strongly dependent on the line-of-sight orientation of the galaxy cluster, opening new possibilities for assessing systematics in optical cluster finding.
description: 6 pages, 4 figures; final version as published in ApJ Letters
De la Meuse à l'Oder. L'Allemagne au XIIIe siècle, hg. von Michel Parisse unter Mitarbeit von Sylvain Gouguenheim, Pierre Monnet und Joseph Morsel, 1994
Creators: name: Eickels, Klaus Van
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 1 (1996)
Eleanor Margaret Burbidge - Bibliography
Creators: name: Sargent, Anneila I.
name: Longair, Malcolm S.
Publisher: name: The Royal Society
Year: 2021
Subjects: Instrumentation, Techniques, and Astronomical Observations

description: Margaret Burbidge was one of the great observational astronomers of the twentieth century. She had a natural aptitude for instrumentation, observation and the interpretation of spectroscopic data, coupled with an instinct for making optimum use of the observing facilities to which she gained access. Following her rigorous training in observational astrophysics and managing the University of London Observatory, she and Geoff Burbidge, whom she married in 1948, led a peripatetic life for the following decade or more. During this time they made their most important pioneering contribution to astrophysics through their collaboration with Willy Fowler and Fred Hoyle on the origin of the chemical elements. Their famous and comprehensive B2FH paper of 1957 described the numerous nuclear processes that led to the synthesis of the heavy elements in stars, with element abundance values supported by decisive observational evidence. They went on to the University of Chicago/Yerkes, making pioneering observations of the kinematics of galaxies. In 1962, they both became tenured professors at University of California at San Diego, their base for the rest of their careers. There, they were at the heart of the exciting early years of unravelling the properties of quasars, writing the first monograph on these objects in 1967. After an unhappy brief episode as the first woman director of the Royal Greenwich Observatory in the UK, she returned to San Diego, where she played a major role in the construction and exploitation of the faint object spectrograph of the Hubble Space Telescope, specializing in the study of the absorption line spectra of quasars. Most of her early papers were co-authored with Geoff, who supported her in every way throughout their happy marriage. In her understated way, she became a role model for women astronomers, breaking down the conscious and unconscious bias against women she encountered throughout her career. She led by example and made every effort to support future generations of women astronomers.
‘From White, to Red, to Dark’ - Colors and Their Interpretation in Manzāzu 2: 42-45
Creators: name: Menicatti, Lucrezia
Publisher: name: University of Vienna. Department of Near Eastern Studies
Year: 2023
Subjects: Divination
Extispicy
Color
Omen sequence
Textual structure

description: This showcase deals with a sequence of four omens from the Babylonian extispicy series Bārûtu, “The diviner’s craft.” The omens under examination (Manzāzu 2: 42-45) use different colors to describe a special mark on the liver known as the “Request” (erištu). This showcase examines first the horizontal connection between protasis and apodosis in each omen and shows that there is a correspondence between the ominous sign and the color observed in the omen protasis and the prediction in the omen apodosis. Additionally, the study analyzes the vertical arrangement of the omens’ sequence and demonstrates that the predictions form a short narrative that reflects the colors mentioned in the protases. This ultimately sheds light on the role of colors in the textual structure of this omen sequence.
Heinz-Dieter Heimann, Hausordnung und Staatsbildung. Innerdynastische Konflikte als Wirkungsfaktoren der Herrschaftsverfestigung bei den wittelbachischen Rheinpfalzgrafen und den Herzögen von Bayern, 1993
Creators: name: Monnet, Pierre
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 1 (1996)