cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
VU Data Conversations: Preregistration for Qualitative Research
Creators: name: Haven, Tamarinde
name: Rodenburg, Elisa
Publisher: name: Zenodo
Year: 2021
Subjects: Data Conversations
Open Science
Preregistration
Qualitative Research
Center for Open Science

description: Presentation given at the fifth online edition of Data Conversations held at the Vrije Universiteit Amsterdam and organised by the VU University Library on 10 February 2021. The theme of this edition was "Preregistration for Qualitative Research". The recording of Tamarinde Haven's presentation can be viewed on the VU University Library channel. Agenda: Tamarinde Haven, "Preregistering Qualitative Research" Q&A About Data Conversations Data Conversations started at the University of Lancaster in the UK. The Lancaster Data Conversations aim to bring data practitioners together to talk about how researchers create, collect, use and share data. The Data Conversations at the VU Amsterdam share the same aim and are intended to provide a forum for researchers from different subjects and disciplines to exchange practices and ideas around open data, FAIR data, research data management and related open science topics.
Weak ferromagnetism and internal magnetoelectric effect in LiFeP$_2$O$_7$
Creators: name: Liang, K. -C.
name: Zhang, W.
name: Lorenz, B.
name: Sun, Y. Y.
name: Halasyamani, P. S.
name: Chu, C. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic, thermodynamic, and pyroelectric properties of LiFeP$_2$O$_7$ single crystals are investigated with emphasis on the magnetoelectric interaction of the electrical polarization with the magnetic order parameter. The magnetic order below T$_N\simeq$ 27 K is found to be a canted antiferromagnet with a weak ferromagnetic component along the $b-$axis. A sharp peak of the pyroelectric current at T$_N$ proves the strong internal magnetoelectric interaction resulting in a sizable polarization decrease at the onset of magnetic order. The magnetoelectric effect in external magnetic fields combines a linear and a quadratic field dependence below T$_N$. Thermal expansion data show a large uniaxial magnetoelastic response and prove the existence of strong spin lattice coupling. LiFeP$_2$O$_7$ is a polar compound with a strong interaction of the magnetic order parameter with the electric polarization and the lattice.
description: 8 pages, 9 figures, to be published in Phys. Rev. B
Dynamische In-Vitro-Studie zur Strömungsabhängigkeit der Degradationsrate von Magnesium
Creators: name: Quirico, M.
name: Evertz, F.
name: Glasmacher, Birgit
Publisher: name: Berlin : Walter de Gruyter
Year: 2013
Subjects: subject: Entwicklung
subject: Werkstoff
subject: Implantat
subject: Magnesium
subject: Degradation
subject: Magnesiumdegradation
subject: Strömungsabhängigkeit
subject: in-vitro
subject: dynamisch
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Zur Schaffung eines standardisierten Versuchsablaufs für Studien zur Magnesiumdegradation im Rahmen der Entwicklung eines biodegradablen Implantatwerkstoffs, wurde eine Steuerung für einen Prüfstand zur dynamischen in-vitro-Testung programmiert und deren Funktionsfähigkeit mit einer Testreihe bestätigt. Durch die Ergebnisse dieser Versuchsreihe konnte zudem die Strömungsabhängigkeit der Degradationsrate von Magnesium nachgewiesen werden.
Structural Phase Transitions of the Metal Oxide Perovskites SrTiO3, LaAlO3 and LaTiO3 Studied with a Screened Hybrid Functional
Creators: name: El-Mellouhi, Fedwa
name: Brothers, Edward N.
name: Lucero, Melissa J.
name: Bulik, Ireneusz W.
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated the structural phase transitions of the transition metal oxide perovskites SrTiO$_{3}$, LaAlO$_{3}$ and LaTiO$_{3}$ using the screened hybrid density functional of Heyd, Scuseria and Ernzerhof (HSE06). We show that HSE06-computed lattice parameters, octahedral tilts and rotations, as well as electronic properties, are significantly improved over semilocal functionals. We predict the crystal field splitting ($Δ_{CF}$) resulting from the structural phase transition in SrTiO$_{3}$ and LaAlO$_{3}$ to be 3 meV and 10 meV, respectively, in excellent agreement with experimental results. HSE06 identifies correctly LaTiO$_{3}$ in the magnetic sates as a Mott insulator. Also, it predicts that the GdFeO$_{3}$-type distortion in non-magnetic LaTiO$_{3}$ will induce a large $Δ_{CF}$ of 410 meV. This large crystal-field splitting associated with the large magnetic moment found in the G-type antiferromagnetic state suggest that LaTiO$_{3}$ has an induced orbital order, which is confirmed by the visualisation of the highest occupied orbitals. These results strongly indicate that HSE06 is capable of efficiently and accurately modeling perovskite oxides, and promises to efficiently capture the physics at their heterointerfaces.
MORTOS E VIVOS
Creators: name: Santana, José Cláudio Pavão
Publisher: name: Zenodo - Cadernos da Pena do Pavao
Year: 2023

description: Ano 09 – vol. 07 – n. 58/2021
A história do constitucionalismo vem percorrendo um caminho de tortuosas vias no Brasil. Muitas são as criações. Várias de duvidoso paladar jurídico.
É óbvio que ao pensarmos em uma Constituição como a dos Estados Unidos da
América estamos a falar de um documento do Século XVIII. Portanto, estamos a falar
de um documento escrito por pessoas mortas, para governar pessoas vivas.
A limit on eccentricity growth from global 3-D simulations of disc-planet interactions
Creators: name: Dunhill, Alex
name: Alexander, Richard
name: Armitage, Phil
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present high resolution 3-D simulations of the planet-disc interaction using smoothed particle hydrodynamics, to investigate the possibility of driving eccentricity growth by this mechanism. For models with a given disc viscosity (α= 0.01), we find that for small planet masses (a few Jupiter masses) and canonical surface densities, no significant eccentricity growth is seen over the duration of our simulations. This contrasts with the limiting case of large planet mass (over twenty Jupiter masses) and extremely high surface densities, where we find eccentricity growth in agreement with previously published results. We identify the cause of this as being a threshold surface density for a given planet mass below which eccentricity growth cannot be excited by this method. Further, the radial profile of the disc surface density is found to have a stronger effect on eccentricity growth than previously acknowledged, implying that care must be taken when contrasting results from different disc models. We discuss the implication of this result for real planets embedded in gaseous discs, and suggest that the disc-planet interaction does not contribute significantly to observed exoplanet eccentricities.
description: 12 pages, 9 figures, 2 tables. Accepted for publication in MNRAS. Movies of some of the simulations can be found at: http://www.astro.le.ac.uk/~acd23/eccentricity.html
Numbers with Integer Complexity Close to the Lower Bound
Creators: name: Altman, Harry
name: Zelinsky, Joshua
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B75

description: Define $|n|$ to be the complexity of $n$, the smallest number of 1's needed to write $n$ using an arbitrary combination of addition and multiplication. John Selfridge showed that $|n|\ge 3\log_3 n$ for all $n$. Define the defect of $n$, denoted $δ(n)$, to be $|n|-3\log_3 n$; in this paper we present a method for classifying all $n$ with $δ(n)
description: 23 pages; to appear in INTEGERS
Ligand field density functional theory for the prediction of future domestic lighting
Creators: name: Ramanantoanina, Harry
name: Urland, Werner
name: Garcia-Fuente, Amador
name: Cimpoesu, Fanica
name: Daul, Claude
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: excited-state absorption
subject: angular overlap model
subject: augmented-wave method
subject: electronic-properties
subject: fluoride-crystals
subject: fine-structure
subject: complexes
subject: pr3+
subject: dft
subject: transitions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: We deal with the computational determination of the electronic structure and properties of lanthanide ions in complexes and extended structures having open-shell f and d configurations. Particularly, we present conceptual and methodological issues based on Density Functional Theory (DFT) enabling the reliable calculation and description of the f → d transitions in lanthanide doped phosphors. We consider here the optical properties of the Pr3+ ion embedded into various solid state fluoride host lattices, for the prospection and understanding of the so-called quantum cutting process, being important in the further quest of warm-white light source in light emitting diodes (LED). We use the conceptual formulation of the revisited ligand field (LF) theory, fully compatibilized with the quantum chemistry tools: LFDFT. We present methodological advances for the calculations of the Slater–Condon parameters, the ligand field interaction and the spin–orbit coupling constants, important in the non-empirical parameterization of the effective Hamiltonian adjusted from the ligand field theory. The model shows simple procedure using less sophisticated computational tools, which is intended to contribute to the design of modern phosphors and to help to complement the understanding of the 4fn → 4fn−15d1 transitions in any lanthanide system.
Higher-order correlation functions and nonlinear response functions in a Gaussian trap model
Creators: name: Diezemann, Gregor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The four-time correlation function of a general dynamical variable obeying Gaussian statistics is calculated for the trap model with a Gaussian density of states. It is argued that for energy-independent variables this function is reminiscent of the four-time functions that have been discussed earlier in the interpretation of the results of four-dimensional NMR experiments on supercooled liquids. Using an approximative relation between the four-time correlation function and the cubic response function the nonlinear susceptibility is calculated and the results are compared with the corresponding ones resulting from an exact calculation. It is found that the results of the approximation change the qualitative behavior of the modulus of the susceptibility. Whereas in the exact calculation a peak is found in the modulus in most cases, depending on temperature and the additional model parameters no such peak occurs in the approximation. This difference has its origin mainly in an incorrect estimate of the static response. The results are discussed in relation to recent experimental findings.
description: 13 pages, 5 figures, submitted to J. Chem. Phys., special issue on the glass transition
A K-theoretic proof of Boutet de Monvel's index theorem for boundary value problems
Creators: name: Melo, Severino T.
name: Schick, Thomas
name: Schrohe, Elmar
Publisher: name: Berlin : Walter de Gruyter
Year: 2006
Subjects: subject: algebra
subject: operators
subject: calculus
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We study the C*-closure U of the algebra of all operators of order and class zero in Boutet de Monvel's calculus on a compact connected manifold X with boundary partial derivative X not equal phi. We find short exact sequences in K-theory 0 -> K-i (C(X)) -> K-i(U/R) ->(P) K1-i(C-0(T*X degrees)) -> 0, i = 0,1, which split, so that K-i(U/R) congruent to K-i(C(X)) circle plus K1-i(Co(T*X degrees)). Using only simple K-theoretic arguments and the Atiyah-Singer index theorem, we show that the Fredhohn index of an elliptic element in A is given by ind A = ind(t)(p[A])), where [A] is the class of A in K-1(U/R) and ind(t) is the topological index, a relation first established by Boutet de Monvel by different methods.
title: Comparative analysis of jacket and monopile structures in sensitivity to load parameters
title: Uporedna Analiza Osetljivosti Konstrukcija “Jacket” I Monopil Na Parametre Opterećenja
titleType: AlternativeTitle
Creators: name: Glisic, Ana
name: Schauman, Peter
Publisher: name: Leibniz Universität Hannover
Year: 2016
Subjects: subject: wind energy
subject: sensitivity analysis
subject: support structure
subject: wave load
subject: energija vetra
subject: analiza osetljivosti
subject: dejstva talasa
subject: noseća konstrukcija
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: Nowadays, much attention is payed to the development of renewable energy resources. Wind energy plays a major role in this issue. That is why there is a growing interest for improving the design process of wind turbines at many aspects. This study deals with offshore wind turbines (OWT) from the reliability aspect. Estimating the uncertainties, a deeper understanding of behavior of the structure is obtained. As waves are the dominant load on OWT support structures, this paper addresses how specific wave characteristics affect the structure. Two structural types of support structures are studied, with the aim to evaluate pros and cons of both.
MOF membrane synthesis in the confined space of a vertically aligned LDH network
Creators: name: Liu, Yi
name: Wang, Nanyi
name: Diestel, Lisa
name: Steinbach, Frank
name: Caro, Jürgen
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: Metal-Organic Framework
subject: Zeolitic-Imidazolate Framework
subject: Molecular-Sieve Membrane
subject: Gas-Separation Performance
subject: Propylene/Propane Separation
subject: High Permeability
subject: Zif-8 Membranes
subject: Growth
subject: Films
subject: Selectivity
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: MOF membranes have gained widespread attention due to their unprecedented gas separation performance. Relying on physical interactions, we successfully deposited MOF seeds on a substrate modified with a network of vertically aligned LDH walls before secondary growth of the MOF layer. ZIF-8 membranes thus prepared show considerable H-2 permeance with high H-2-CH4 selectivity. This approach is in general suitable for the deposition of nanoparticles on solid surface and their subsequent growth into a dense layer.
In situ formation of LDH membranes of different microstructures with molecular sieve gas selectivity
Creators: name: Liu, Yi
name: Wang, Nanyi
name: Caro, Jürgen
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: Layered Double Hydroxides
subject: Metal-Organic Framework
subject: Hydrotalcite-Like Compounds
subject: Graphene Oxide Membranes
subject: Pore-Plugging Synthesis
subject: Mfi-Alumina Membranes
subject: Zeolite Membranes
subject: Thin-Films
subject: Separation Membranes
subject: Hydrogen Separation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Research on interlayer gallery-based gas and liquid separation has gained widespread attention. A series of layered materials like lamellar ZSM-5, graphene and its derivatives have been fabricated into membranes showing fascinating gas/liquid separation properties. Layered double hydroxides (LDHs) are prominent representatives of layered compounds composed of regularly arranged brucite-like 2D sheets. Here we successfully prepared well-intergrown NiAl-CO3 LDH membranes in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure of prepared membranes. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 0.6 mu m thick LDH membranes, while randomly oriented 5 mu m thick LDH membranes formed from CO2-saturated precursor solutions. Both ab-& randomly oriented LDH membranes showed clear size-based selectivity and H-2 was found to preferentially permeate through the interlayer galleries. However, randomly oriented LDH membranes showed a much higher H-2 selectivity possibly due to the decreased density of mesoscopic defects. Furthermore, in addition to the NiAl-CO3 LDH membrane, a compact and randomly oriented ZnAl-NO3 LDH membrane with reasonable gas selectivity was successfully prepared here by proper optimization of the synthesis conditions.
title: Vision-Based Anomaly Detection for Railroad Systems
Creators: name: Breuss, David
Publisher: name: TU Wien
Year: 2023
Subjects: subject: Embedded systems
subject: predictive maintenance
subject: machine learning
subject: anomaly dtection
subject: deep neural networks

description: Arbeit an der Bibliothek noch nicht eingelangt - Daten nicht geprueft - gesperrte Arbeit (bis 2024-06-20+02:00)
description: Abweichender Titel nach Übersetzung der Verfasserin/des Verfassers
Continuous flow chemistry: a discovery tool for new chemical reactivity patterns
Creators: name: Hartwig, Jan
name: Metternich, Jan B.
name: Nikbin, Nikzad
name: Kirschning, Andreas
name: Ley, Steven V.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: Organic-Synthesis
subject: Magnetic Nanoparticles
subject: Enabling Technology
subject: Multistep Synthesis
subject: Reactors
subject: Microreactors
subject: Ketones
subject: Batch
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Continuous flow chemistry as a process intensification tool is well known. However, its ability to enable chemists to perform reactions which are not possible in batch is less well studied or understood. Here we present an example, where a new reactivity pattern and extended reaction scope has been achieved by transferring a reaction from batch mode to flow. This new reactivity can be explained by suppressing back mixing and precise control of temperature in a flow reactor set up.
Ein Siedlungsplatz der römischen Kaiserzeit und der Völkerwanderungszeit in Harkenbleck, Lkr. Hannover
Creators: name: Schlüter, Wolfgang
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 43 (1974): Nachrichten aus Niedersachsens Urgeschichte
Finite-width effects on threshold corrections to squark and gluino production
Creators: name: Falgari, Pietro
name: Schwinn, Christian
name: Wever, Christopher
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the implication of finite squark and gluino decay widths for threshold resummation of squark and gluino production cross sections at the LHC. We find that for a moderate decay width (Gamma/m < 5%) higher-order soft and Coulomb corrections are appropriately described by NLL calculations in the zero-width limit including the contribution from bound-state resonances below threshold, with the remaining uncertainties due to finite-width effects of a similar order as the ambiguities of threshold-resummed higher-order calculations.
description: 30 pages, 13 figures. v2: minor typos corrected and clarifications added
The angular overlap model extended for two-open-shell f and d electrons
Creators: name: Ramanantoanina, Harry
name: Urland, Werner
name: Cimpoesu, Fanica
name: Daul, Claude
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: density-functional theory
subject: single-molecule-magnet
subject: rare-earth ions
subject: configuration-interaction
subject: electrostatic model
subject: complexes
subject: transitions
subject: pr3+
subject: luminescence
subject: excitation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: We discuss the applicability of the Angular Overlap Model (AOM) to evaluate the electronic structure of lanthanide compounds, which are currently the subject of incredible interest in the field of luminescent materials. The functioning of phosphors is well established by the f–d transitions, which requires the investigation of both the ground 4fn and excited 4fn−15d1 electron configurations of the lanthanides. The computational approach to the problem is based on the effective Hamiltonian adjusted from ligand field theory, but not restricted to it. The AOM parameterization implies the chemical bonding concept. Focusing our interest on this interaction, we take the advantages offered by modern computational tools to extract AOM parameters, which ensure the transparency of the theoretical determination and convey chemical intuitiveness of the non-empirical results. The given model contributes to the understanding of lanthanides in modern phosphors with high or low site symmetry and presents a non-empirical approach using a less sophisticated computational procedure for the rather complex problem of the ligand field of both 4f and 5d open shells.
Grammatik oder Rhetorik? Über die Motiviertheit unserer Zeichensetzung
Creators: name: Eisenberg, Peter
Publisher: name: Berlin : De Gruyter
Year: 1979
Subjects: subject: Grammatik
subject: Rhetorik
subject: Zeichensetzung
subject: Dewey Decimal Classification::400 | Sprache, Linguistik

description: [No abstract available]
Zu den Ausgrabungen 1971-1973 an der Klosterkirche zu Oldenstadt (Stadt Uelzen), Kr. Uelzen
Creators: name: Manger, Robert
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 43 (1974): Nachrichten aus Niedersachsens Urgeschichte
Conformational steering in dicarboxy acids: the native structure of succinic acid
Creators: name: Jahn, Michaela K.
name: Mendez, Estibaliz
name: Nair, K. P. Rajappan
name: Godfrey, Peter D.
name: McNaughton, Don
name: Ecija, Patricia
name: Basterretxea, Francisco J.
name: Cocinero, Emilio J.
name: Grabow, Jens-Uwe
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2015
Subjects: subject: transform microwave spectrometer
subject: molecular-structure
subject: gas-phase
subject: ab-initio
subject: bonds
subject: nucleation
subject: diffraction
subject: energies
subject: clusters
subject: spectrum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Succinic acid, a dicarboxylic acid molecule, has been investigated spectroscopically with computational support to elucidate the complex aspects of its conformational composition. Due to the torsional freedom of the carbon backbone and hydroxy groups, a large number of potentially plausible conformers can be generated with an indication that the gauche conformer is favored over the trans form. The microwave and millimeter wave spectra have been analyzed and accurate spectroscopic constants have been derived that correlate best with those of the lowest energy gauche conformer. For an unambiguous conformational identification measurements were extended to the monosubstituted isotopologues, precisely determining the structural properties. Besides bond distances and angles, particularly the dihedral angle has been determined to be 67.76(11)°, confirming the anomalous tendency of the methylene units to favor gauche conformers when a short aliphatic segment is placed between two carbonyl groups.
Polypyrrole nanoparticles for tunable, pH-sensitive and sustained drug release
Creators: name: Samanta, Devleena
name: Meiser, Jana L.
name: Zare, Richard N.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2015
Subjects: subject: electrochemically controlled-release
subject: electrically controlled-release
subject: conducting polymers
subject: aqueous-solution
subject: delivery
subject: micelles
subject: system
subject: redox
subject: model
subject: polymerization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: We report the development of a generalized pH-sensitive drug delivery system that can release any charged drug preferentially at the pH range of interest. Our system is based on polypyrrole nanoparticles (PPy NPs), synthesized via a simple one-step microemulsion technique. These nanoparticles are highly monodisperse, stable in solution over the period of a month, and have good drug loading capacity (∼15 wt%). We show that PPy NPs can be tuned to release drugs at both acidic and basic pH by varying the pH, the charge of the drug, as well as by adding small amounts of charged amphiphiles. Moreover, these NPs may be delivered locally by immobilizing them in a hydrogel. Our studies show encapsulation within a calcium alginate hydrogel results in sustained release of the incorporated drug for more than 21 days. Such a nanoparticle-hydrogel composite drug delivery system is promising for treatment of long-lasting conditions such as cancer and chronic pain which require controlled, localized, and sustained drug release.
Equitable Access: Leveraging Multi-sensory Strategies to Engage and Empower Museum Learners of Diverse Abilities
Creators: name: Livingston, Lucas
name: Haines-Trautman, Calgary
Publisher: name: CIPEG Journal: Ancient Egyptian & Sudanese Collections and Museums
Year: 2018

description: Our current museum culture embraces diverse approaches to information acquisition, empowering the visitor's voice and discovery through hands-on experience. How can emerging technologies such as 3D-printing and innovative approaches to multi-sensory learning activate museum collections of ancient objects and help cultivate a more engaging and participatory atmosphere for all audiences? This paper showcases current examples of hands-on learning and multi-sensory engagement in University of Chicago’s Oriental Institute and the Art Institute of Chicago. The Oriental Institute’s Verbal Imaging and Multi-Sensory Tours use artefact replicas in combination with detailed visual description and other sensory experiences, moving beyond visual observation to create a rich understanding of the artefacts and culture of the ancient Near East. The Art Institute of Chicago's collection of 3D-printed replicas enable hands-on tactile experiences with ancient works of art that were intended to be touched, opening different avenues for understanding and insight. Museum visitors, from reluctantly receptive traditionalists to youthful creative consumers, have embraced the diverse approaches of these institutions. Aspects of universal design ensure that learning and engagement remain accessible to all individuals, including people with disabilities such as visual impairments, autism, or dementia, who may not rely on traditional visual and auditory approaches to learning. The examples discussed here demonstrate, however, that approaches and accommodations made for people with disabilities are invariably beneficial for and appealing to a general audience.
description: CIPEG Journal: Ancient Egyptian & Sudanese Collections and Museums, No 2 (2018)
The Distance to M101 Hosting Type Ia SN 2011fe Based on the Tip of the Red Giant Branch
Creators: name: Lee, Myung Gyoon
name: Jang, In Sung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new determination of the distance to M101, host of the type Ia SN 2011fe, based on the tip of the red giant branch method (TRGB). Our determination is based on {\it Hubble Space Telescope} archival $F555W$ and $F814W$ images of nine fields within the galaxy. Color-magnitude diagrams of arm-free regions in all fields show a prominent red giant branch (RGB). We measure the $I$-band magnitudes of the TRGB, obtaining a mean value of $I_{\rm TRGB}=25.28\pm0.01$ (where the error is a standard error), using an edge-detection method. We derive a weighted mean value of distance modulus $(m-M)_0=29.30\pm0.01 ({\rm random})\pm0.12 ({\rm systematic})$, corresponding to a linear distance of $7.24\pm0.03\pm0.40 $ Mpc. While previous estimates for M101 show a large range (TRGB distances of $(m-M)_0=29.05$ to 29.42 and Cepheid distances of $(m-M)_0=29.04$ to 29.71), our measurements of the TRGB distances for nine fields show a small dispersion of only 0.02. We combine our distance estimate and photometry in the literature to derive absolute peak magnitudes in optical and near-infrared bands of SN 2011fe. Absolute maximum magnitudes of SN 2011fe are $\sim0.2$ mag brighter in the optical band and much more in the NIR than the current calibrations of SNe Ia in the literature. From the optical maximum magnitudes of SN 2011fe we obtain a value of the Hubble constant, $H_0=65.0\pm0.5({\rm random})\pm5.7({\rm systematic})$ \kmsMpc, slightly smaller than other recent determinations of $H_0$.
description: 16 pages, 4 figures, 1 table, Accepted for publication in ApJ Letters
Diffractionless propagation through Kapitza stratified media
Creators: name: Rizza, Carlo
name: Ciattoni, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that in the presence of a rapidly modulated dielectric permittivity with a large modulation depth (Kapitza medium) a novel and robust regime of diffractionless electromagnetic propagation occurs. This happens when the mean value to depth ratio of the dielectric profile is comparable to the small ratio between the modulation period and the wavelength. We show that the standard effective medium theory is inadequate to describe the proposed regime and that, its occurrence is not substantially hampered by medium losses. We check the feasibility of the proposed regime by means of a large modulation depth metal-dielectric layered medium whose subwavelength imaging properties are analytically investigated.
description: 5 pages, 3 figures
Continuity of packing measure function of self-similar iterated function systems
Creators: name: Qiu, Hua
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 28A80

description: In this paper, we focus on the packing measure of self-similar sets. Let $K$ be a self-similar set whose Hausdorff dimension and packing dimension equal $s$, we state that if $K$ satisfies the strong open set condition with an open set $\mathcal{O}$, then $\mathcal{P}^s(K\cap B(x,r))\geq (2r)^s$ for each open ball $B(x,r)\subset \mathcal{O}$ centered in $K$, where $\mathcal{P}^s$ denotes the $s$-dimensional packing measure. We use this inequality to obtain some precise density theorems for packing measure of self-similar sets, which can be applied to compute the exact value of the $s$-dimensional packing measure $\mathcal{P}^s(K)$ of $K$. Moreover, by using the above results, we show the continuity of the packing measure function of the attractors on the space of self-similar iterated function systems satisfying the strong separation condition. This result gives a complete answer to a question posed by L. Olsen.
description: 17 pages
Six-fold-symmetry internal rotation in toluenes: the low barrier challenge of 2,6-and 3,5-difluorotoluene
Creators: name: Nair, K. P. Rajappan
name: Jahn, Michaela K.
name: Lesarri, Alberto
name: Ilyushin, Vadim V.
name: Grabow, Jens-Uwe
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2015
Subjects: subject: transform microwave spectrometer
subject: o-chlorotoluene
subject: molecular-beam
subject: dipole-moment
subject: spectrum
subject: fluorotoluene
subject: spectroscopy
subject: state
subject: constants
subject: isotopes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Pure six-fold symmetry (V6) internal rotation poses significant challenges to experimental and theoretical determination, as the very low torsional barriers result in huge tunneling splittings difficult to identify and to model. Here we resolved the methyl group internal rotation dynamics of 2,6- and 3,5-difluorotoluene using a newly developed computer code especially adapted to V6 problems. The jet-cooled rotational spectra of the title molecules in the 5–25 GHz region revealed internal rotation tunneling doublings of up to 3.6 GHz, which translated in methyl group potential barriers of V6 = 0.14872(24) and 0.0856(10) kJ mol−1, respectively, in the vibrational ground-state. Additional information on Stark effects and carbon isotopic species in natural abundance provided structural data and the electric dipole moments for both molecules. Ab initio calculations at the MP2 level do not reproduce the tiny torsional barriers, calling for experiments on other systems and additional theoretical models.
Engineering entanglement mechanically
Creators: name: Asjad, Muhammad
name: Saif, Farhan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose entanglement for hybrid optomechanical system consisting of Bose-Einstein condensate (BEC) inside a single-mode high-Q Fabry-Perot cavity with a vibrating end mirror (mechanical mirror). The intracavity field couples the vibrating end mirror with collective atomic density of the BEC. We show that the radiation pressure generates the stationary entanglement of three bipartite subsystems, i.e, field-mechanical mirror, field-BEC and mechanical mirror-atoms. The resulting entanglement is fragile with respect to temperature.
description: 6 pages, 7 figures
Classical Cepheids Require Enhanced Mass Loss
Creators: name: Neilson, Hilding R.
name: Langer, Norbert
name: Engle, Scott G.
name: Guinan, Ed
name: Izzard, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Measurements of rates of period change of Classical Cepheids probe stellar physics and evolution. Additionally, better understanding of Cepheid structure and evolution provides greater insight into their use as standard candles and tools for measuring the Hubble constant. Our recent study of the period change of the nearest Cepheid, Polaris, suggested that it is undergoing enhanced mass loss when compared to canonical stellar evolution model predictions. In this work, we expand the analysis to rates of period change measured for about 200 Galactic Cepheids and compare them to population synthesis models of Cepheids including convective core overshooting and enhanced mass loss. Rates of period change predicted from stellar evolution models without mass loss do not agree with observed rates whereas including enhanced mass loss yields predicted rates in better agreement with observations. This is the first evidence that enhanced mass loss as suggested previously for Polaris and delta Cephei must be a ubiquitous property of Classical Cepheids.
description: 6 pages, 4 figures, Accepted for publication in ApJ Letters
[Review untitled to: Constructions of Masculinity in British Literature from the Middle Ages to the Present / ed. by Stefan Horlacher]
Creators: name: Funk, Wolfgang
Publisher: name: Berlin : Walter de Gruyter
Year: 2013
Subjects: subject: Englisch
subject: Literatur
subject: Männlichkeit
subject: Rezension
subject: Englisch
subject: Literatur
subject: Männlichkeit
subject: Rezension
subject: Dewey Decimal Classification::400 | Sprache, Linguistik::420 | Englisch
subject: Dewey Decimal Classification::800 | Literatur, Rhetorik, Literaturwissenschaft::820 | Englische Literatur

description: Rezension zu: Constructions of Masculinity in British Literature from the Middle Ages to the Present / ed. by Stefan Horlacher. - New York: Palgrave Macmillan, 2011, 278 S. ISBN: 978-0-230-11509-5
Knot polynomials in the first non-symmetric representation
Creators: name: Anokhina, A.
name: Mironov, A.
name: Morozov, A.
name: Morozov, An.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We describe the explicit form and the hidden structure of the answer for the HOMFLY polynomial for the figure eight and some other 3-strand knots in representation [21]. This is the first result for non-torus knots beyond (anti)symmetric representations, and its evaluation is far more complicated. We provide a whole variety of different arguments, allowing one to guess the answer for the figure eight knot, which can be also partly used in more complicated situations. Finally we report the result of exact calculation for figure eight and some other 3-strand knots based on the previously developed sophisticated technique of multi-strand calculations. We also discuss a formula for the superpolynomial in representation [21] for the figure eight knot, which heavily relies on the conjectural form of superpolynomial expansion nearby the special polynomial point. Generalizations and details will be presented elsewhere.
description: 19 pages
Solving parabolic equations on the unit sphere via Laplace transforms and radial basis functions
Creators: name: Gia, Q. T. Le
name: McLean, William
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35R01, 65N30

description: We propose a method to construct numerical solutions of parabolic equations on the unit sphere. The time discretization uses Laplace transforms and quadrature. The spatial approximation of the solution employs radial basis functions restricted to the sphere. The method allows us to construct high accuracy numerical solutions in parallel. We establish $L_2$ error estimates for smooth and nonsmooth initial data, and describe some numerical experiments.
description: 26 pages, 1 figure
Effects of degradable Mg-Ca alloys on dendritic cell function
Creators: name: Feser, K.
name: Kietzmann, M.
name: Bäumer, W.
name: Krause, C.
name: Bach, F.W.
Publisher: name: London : SAGE Publications Ltd.
Year: 2011
Subjects: subject: dendritic cells
subject: macrophages
subject: magnesium alloys
subject: T-cell activation
subject: viability
subject: Antigen presenting cells
subject: Bone marrow
subject: Cell viability
subject: Dendritic cells
subject: In-cell
subject: In-vivo experiments
subject: Magnesium chlorides
subject: Magnesium concentrations
subject: New material
subject: Pure magnesium
subject: Untreated control
subject: Alloys
subject: Calcium
subject: Calcium alloys
subject: Calcium chloride
subject: Cell proliferation
subject: Macrophages
subject: Magnesium
subject: Magnesium alloys
subject: Cell culture
subject: alloy
subject: biomaterial
subject: calcium
subject: CD86 antigen
subject: magnesium
subject: animal
subject: article
subject: cell culture
subject: cell differentiation
subject: cell motion
subject: cell survival
subject: cytology
subject: dendritic cell
subject: female
subject: immunology
subject: lymphocyte activation
subject: macrophage
subject: metabolism
subject: mouse
subject: Animals
subject: Antigens, CD86
subject: Biocompatible Materials
subject: Cell Differentiation
subject: Cell Movement
subject: Cell Survival
subject: Cells, Cultured
subject: Dendritic Cells
subject: Female
subject: Lymphocyte Activation
subject: Mice
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Degradable magnesium alloys are new materials for implants used in orthopedic and trauma surgery. The aim of this study was to investigate the influence of degradable magnesium alloys on the function of dendritic cells (DC) as these cells represent the major antigen presenting cells of the body. MgP (pure magnesium), MgCa 0.6 (0.6% calcium), MgCa 0.8 (0.8% calcium), MgCa 1.0 (1% calcium), and MgCa 1.2 (1.2% calcium) alloys were degraded in cell culture medium. In parallel, murine bone marrow-derived DC were incubated with increasing concentrations (0.1-10 mmol/L) of magnesium chloride and calcium chloride, respectively. Incubation of DC with degradation media over 6 days had no influence on cell viability and only marginal influence on DC migration. Also, the production of TNFα and expression of CD86 was not enhanced by incubation with degraded magnesium alloys. The mixed leukocyte reaction revealed that there was also no increase of the T-cell proliferation in comparison to untreated controls. However, there was a trend toward macrophage development at the expense of DC expansion and an enhanced DC migration was induced by incubation with higher magnesium concentrations. Particularly the latter should be verified in in vivo experiments. © The Author(s), 2010.
The constancy of ζin single-clock Inflation at all loops
Creators: name: Senatore, Leonardo
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Studying loop corrections to inflationary perturbations, with particular emphasis on infrared factors, is important to understand the consistency of the inflationary theory, its predictivity and to establish the existence of the slow-roll eternal inflation phenomena and its recently found volume bound. In this paper we show that ζ-correlators are time-independent at large distances at all-loop level in single clock inflation. We write the n-th order correlators of \dotζ as the time-integral of Green's functions times the correlators of local sources that are function of the lower order fluctuations. The Green's functions are such that only non-vanishing correlators of the sources at late times can lead to non-vanishing correlators for \dotζ at long distances. When the sources are connected by high wavenumber modes, the correlator is peaked at short distances, and these diagrams cannot lead to a time-dependence by simple diff. invariance arguments. When the sources are connected by long wavenumber modes one can use similar arguments once the constancy of ζ at lower orders was established. Therefore the conservation of ζ at a given order follows from the conservation of ζ at the lower orders. Since at tree-level ζ is constant, this implies constancy at all-loops by induction.
description: 14 pages, 3 figures
Place-making, place-disruption, and place protection of urban blue spaces: perceptions of waterfront planning of a polluted urban waterbody
Creators: name: Toomey, A.H.
name: Campbell, L.K.
name: Johnson, M.
name: Strehlau-Howay, L.
name: Manzolillo, B.
name: Thomas, C.
name: Graham, T.
name: Palta, M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Cancer
subject: Science Policy

description: Urban waterfronts are experiencing a renaissance, as it is estimated that by 2030 more than 60 percent of the world's population will live in cities, the majority of which are located in coastal or riparian regions. On a global level, changing public demands have spurred a new language of sustainability, revitalisation, and resilience with regard to urban waterfronts. Prior research has explored the potential ecological and social impacts of these trends, both in terms of benefits such as opportunities for recreation, as well as negative consequences such as increasing gentrification. Less explored, however, are how these planning and development processes can alternately support and/or interrupt existing “sense of place” that people hold with waterfront spaces, particularly spaces considered to be degraded and/or that are located in marginalised communities. This paper explores place-making, place-disruption and place protection associated with Coney Island Creek, a heavily polluted waterbody in New York City. We find that the creek provides recreation, sustenance, and social connections for substantial numbers of people, and we discuss these findings in the context of proposed resiliency planning and development projects that are perceived by some local stewards to threaten existing place attachments and meanings. In particular, we emphasise the importance of incorporating local knowledge and values in waterfront planning, especially in neighbourhoods that have been historically marginalised. This study contributes to a growing literature on values associated with urban blue spaces, thus furthering knowledge of how to improve current environmental governance strategies in coastal cities around the world.
Laplacian and spectral gap in regular Hilbert geometries
Creators: name: Barthelmé, Thomas
name: Colbois, Bruno
name: Crampon, Mickaël
name: Verovic, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We study the spectrum of the Finsler--Laplace operator for regular Hilbert geometries, defined by convex sets with $C^2$ boundaries. We show that for an $n$-dimensional geometry, the spectral gap is bounded above by $(n-1)^2/4$, which we prove to be the infimum of the essential spectrum. We also construct examples of convex sets with arbitrarily small eigenvalues.
description: 21 pages, 3 figures
Long-term investigation of the photocatalytic hydrogen production on platinized TiO2: an isotopic study
Creators: name: Kandiel, Tarek A.
name: Ivanova, Irina
name: Bahnemann, Detlef W.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: titanium-dioxide
subject: visible-light
subject: water
subject: nanoparticles
subject: mechanism
subject: methanol
subject: metal
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Long-term investigations of the photocatalytic hydrogen production on platinized TiO2 photocatalysts have been carried out employing different solutions of (deuterated) water and (deuterated) methanol. The results indicate that methanol acts as a sacrificial reagent, i.e., as an “electron donor” and that the amount of evolved molecular hydrogen is equivalent to the amount of H2 expected from the complete reforming of methanol or even less depending on the used photocatalyst. No evidence for photocatalytic water splitting is observed even in the presence of very low methanol concentrations, i.e., no molecular oxygen has been detected. Based upon the isotopic labelling studies it was confirmed that H2 is mainly produced by the reduction of protons originating from water.