cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comparing the COVID-19 Mortality occuring in Hospitals and Those Brought in Dead within Malaysia
Creators: name: HS Arvinder-Singh
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
mortality
Brought-In-Dead
control of COVID-19

description: Measuring the success of the control of COVID-19 in any country includes a review of the mortality specially to compare the deaths of those dying in hospitals and those Brought-In-Dead (BID). The objective of this study was to compare the deaths comparing COVID-19 deaths that occurred within the hospitals and BIDs in Malaysia. This cross-sectional study utilised secondary data from the 17/3/20 - 28/2/21. Data such as the basic demography, comorbidities were analysed descriptively and a binary-logistic regression analysis to compare the independent variables against the outcome of being BID compared to dying in hospital was done. From the database, 120 cases were included as BID and 120 patients from the 1006 who passed away in hospital were randomly selected as comparators. Data collected was entered into SPSS v21.0 for analysis. The mean age for BIDs were 59.59 (SD: 18.74), with more males (70.8%), 61.7% of them were Malaysians, 46.7% from Sabah and 64.2% of them having at least one co-morbidity. When compared to those who died in the hospital- age (p=0.03), nationality (p<0.001) and states where the death occurred (p=0.04) had a statistically significant difference when comparing the two groups. The median time of admission to death in the hospital group was 5 (IQR: 12.25). A multivariate binary logistic regression analysis conducted including all demographic data yielded a final conclusion that the only factor that distinguished the BID from those dying in the hospital was being a foreigner (AOR: 4.32 [95%CI: 2.02-9.24], p<0.001). Foreigners in Malaysia were likely to die from COVID-19 outside of the hospital compared to Malaysians. Disclaimer: Abstract text might vary slightly from what is displayed in the e-poster

description: This poster was submitted to the 14th National Conference for Clinical Research (NCCR) in August 18-20, 2021. https://nccrconference.com.my/
Formation of a disk-structure and jets in the symbiotic prototype Z And during its 2006-2010 active phase
Creators: name: Tarasova, T. N.
name: Skopal, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of spectrophotometric observations of the latest cycle of activity of the symbiotic binary Z And from 2006 to 2010. We estimate the temperature of the hot component of Z And to be \approx 150000 - 170000 K at minimum brightness, decreasing to \approx 90000 K at the brightness maximum. Our estimate of the electron density in the gaseous nebula is N_{e}=10^{10}-10^{12} cm^{-3} in the region of formation of lines of neutral helium and 10^6-10^7 cm^{-3} in the region of formation of the [OIII] and [NeIII] nebular lines. A trend for the gas density derived from helium lines to increase and the gas density derived from [OIII] and [NeIII] lines to simultaneously decrease with increasing brightness of the system was observed. Our estimates show that the ratios of the theoretical and observed fluxes in the [OIII] and [NeIII] lines agree best when the O/Ne ratio is similar to its value for planetary nebulae. The model spectral energy distribution showed that, in addition to a cool component and gaseous nebula, a relatively cool pseudophotosphere (5250-11 500 K) is present in the system. The simultaneous presence of a relatively cool pseudophotosphere and high-ionization spectral lines is probably related to a disk-like structure of the pseudophotosphere. The pseudophotosphere formed very rapidly, over several weeks, during a period of increasing brightness of Z And. We infer that in 2009, as in 2006, the activity of the system was accompanied by a collimated bipolar ejection of matter. In contrast to the situation in 2006, the jets were detected even before the system reached its maximum brightness. Moreover, components with velocities close to 1200 km/s disappeared at the maximum, while those with velocities close to 1800 km/s appeared.
description: 18 pages, 19 figures, Accepted for publication in Astronomy Reports
High Resolution H I Distributions and Multi-Wavelength Analyses of Magellanic Spirals NGC 4618 and NGC 4625
Creators: name: Kaczmarek, Jane F.
name: Wilcots, Eric M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a detailed analysis of high resolution H I observations of the Magellanic spiral galaxies NGC 4618 and NGC 4625. While the H I disk of NGC 4625 is remarkably quiescent with a nearly uniform velocity dispersion and no evidence of H I holes, there is a dynamic interplay between star formation and the distribution of neutral hydrogen in NGC 4618. We calculate the critical density for widespread star formation in each galaxy and find that star formation proceeds even where the surface density of the atomic gas is well below the critical density necessary for global star formation. There are strong spatial correlations in NGC 4618 between UV emission, 1.4 GHz radio continuum emission, and peaks in the H I column density. Despite the apparent overlap of the outer disks of the two galaxies, we find that they are kinematically distinct, indicating that NGC 4618 and NGC 4625 are not interacting. The structure of NGC 4618 and, in particular, the nature of its outer ring, are highly suggestive of an interaction, but the timing and nature of such an interaction remain unclear.
Polychromatic modelling the central parsecs of NGC1068
Creators: name: Leftley, James Henry
Publisher: name: Zenodo
Year: 2023

description: GRAVITY and MATISSE have produced a wealth of observations of NGC1068 which allowed for single-waveband image reconstructions to be produced from 2-12 microns. From these images, morphological information was inferred from the brightness distributions and, by aligning the images, temperature profiles were extracted to produce information about the dust composition. However, it is difficult to infer the true multi-wavelength geometry from the individual band images because the absolute position of each image is unknown and therefore the image alignment (and resulting SEDs) are based on assumptions. Indeed, there have been multiple published interpretations of the central morphology. In this talk, I will present our attempt to simultaneously model the observations of NGC1068 provided GRAVITY and MATISSE over the entire wavelength range. We use a polychromatic model with a geometry based on the disk+wind interpretation of the unified model of AGN to test if this morphology can simultaneously explain every band. Furthermore, our images in each wavelength are not independent so a model based alignment between images can be made from which temperature distributions and dust composition can be inferred.
The effects of sulphur dioxide on the floristic composition of Lodgepole pine communities
Creators: name: Adams, Roberta Parish
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: QK 753 S85 P35 1983
subject: Sulphur dioxide - Environmental aspects
subject: Plants, Effect of sulphur dioxide on
subject: Lodgepole pine

description: Bibliography: p. 81-87.
A late jet rebrightening revealed from multi-wavelength monitoring of the black hole candidate XTE J1752-223
Creators: name: Russell, D. M.
name: Curran, P. A.
name: Muñoz-Darias, T.
name: Lewis, F.
name: Motta, S.
name: Stiele, H.
name: Belloni, T.
name: Miller-Jones, J. C. A.
name: Jonker, P. G.
name: O'Brien, K.
name: Homan, J.
name: Casella, P.
name: Gandhi, P.
name: Soleri, P.
name: Markoff, S.
name: Maitra, D.
name: Gallo, E.
name: Bel, M. Cadolle
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present optical monitoring of the black hole candidate XTE J1752-223 during its 2009 - 2010 outburst and decay to quiescence. The optical light curve can be described by an exponential decay followed by a plateau, then a more rapid fade towards quiescence. The plateau appears to be due to an extra component of optical emission that brightens and then fades over ~ 40 days. We show evidence for the origin of this optical 'flare' to be the synchrotron jet during the decaying hard state, and we identify and isolate both disc and jet components in the spectral energy distributions. The optical flare has the same morphology and amplitude as a contemporaneous X-ray rebrightening. This suggests a common origin, but no firm conclusions can be made favouring or disfavouring the jet producing the X-ray flare. The quiescent optical magnitudes are B >= 20.6, V >= 21.1, R >= 19.5, i' >= 19.2. From the optical outburst amplitude we estimate a likely orbital period of < 22 h. We also present near-infrared (NIR) photometry and polarimetry and rare mid-infrared imaging (8 - 12 microns) when the source is nearing quiescence. The fading jet component, and possibly the companion star may contribute to the NIR flux. We derive deep mid-IR flux upper limits and NIR linear polarization upper limits. With the inclusion of radio data, we measure an almost flat jet spectral index between radio and optical; F_nu ~ nu^(~ +0.05). The data favour the jet break to optically thin emission to reside in the infrared, but may shift to frequencies as high as the optical or UV during the peak of the flare.
description: 13 pages, accepted in MNRAS
Probing the structure of pyruvate dehydrogenase multienzyme complex from Escherichia coli with trivalent arsenicals
Creators: name: Adamson, S. Robert
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: QR 82 E6 A32 1983
subject: Escherichia Coli
subject: Microbial enzymes
subject: Arsenic compounds
subject: Organoarsenic compounds
subject: Dehydrogenases

description: Bibliography: p. 242-256.
title: Poly(Vinyl Alcohol)-Hydrogel Microparticles with Soft Barrier Shell for the Encapsulation of Micrococcus luteus
Creators: name: Mafi, Mahsa
name: Kushmaro, Ariel
name: Greenblatt, Charles
name: Agarwal, Seema
name: Greiner, Andreas
Publisher: name: University of Bayreuth
Year: 2021
Subjects: subject: antibacterial polymers
subject: core/shell polymer microparticles
subject: encapsulation
subject: Micrococcus luteus
subject: 540

description: The encapsulation of bacteria in polymers results in hybrid materials that are essential for the long-term biological activity of bacteria and formulations in practical applications. Here, the problem of bacterial escape and the exchange of metabolism products from hydrogel microparticles within an aqueous environment are addressed. Bacteria are encapsulated in chemically cross-linked poly(vinyl alcohol) (PVA) hydrogel-microparticles followed by their encapsulation in a pH-responsive and soft antibacterial shell of poly(N,N-diethylamino ethyl methacrylate) (PDEAEMA). This polymer shell acts selectively with regards to the mass transport in and out of the microparticle core and is affected by environmental parameters, such as pH and antibacterial effect. The pH-responsive PDEAEMA shell forms an open porous structure that accelerates nutrient transfer into the PVA core containing living Micrococcus luteus (M. luteus). Results show that the antibacterial effect of PDEAEMA retards the escape of bacteria up to 35 days when the shell is open. Additionally, the permeation of a small molecule into the gel, for example, methylene blue dye through the core/open-shell structure, certifies a flexible barrier for mass transport, which is required in the long term for the biological activity of encapsulated M. luteus.
Polarizabilities of Si^{2+}: a benchmark test of theory and experiment
Creators: name: Safronova, M. S.
name: Porsev, S. G.
name: Kozlov, M. G.
name: Clark, Charles W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have calculated electric-dipole polarizabilities of the 3s^2 ^1S_0, 3s3p ^3P_0, and 3s3p ^1P_1 states of the Si^{2+} ion using recently developed configuration interaction + all-order method. Detailed evaluation of the uncertainties of the final results is carried out. Our value for the ground state electric-dipole polarizability 11.670(13) a.u. is in excellent agreement with the resonant excitation Stark ionization spectroscopy value 11.669(9) a.u. [Komara et al., J. Phys. B 38, 87 (2005); Mitroy, Phys. Rev. A 78, 052515 (2008)]. This work represents the most precise benchmark test to date of theory and experiment in divalent atoms. The near cancellation of the ns^2 ^1S_0 ground state and the lowest nsnp ^3P_0 polarizabilities previously observed in B+, Al+, In+, Tl+, and Pb^{2+} is also found in Si^{2+} ion.
description: 6 pages
Talk: Towards an account of the emergence, evolution and variability of ENC in IE, part 2: a diachronic perspective
Creators: name: Salaberri, Iker
Publisher: name: Zenodo
Year: 2023

description: A .pdf copy of the talk "Towards an account of the emergence, evolution and variability of emphatic negative coordination in Indo-European, part 2: a diachronic perspective" given at the 26th International Conference on Historical Linguistics at the University of Heidelberg on September Xth 2023.
Ein neo-punischer Graffito und eine numidische Münze aus Oberhausen bei Augsburg
Creators: name: Pfahl, Stefan F.
Publisher: name: Archäologisches Korrespondenzblatt
Year: 2020

description: Archäologisches Korrespondenzblatt, Bd. 47 Nr. 4 (2017): Archäologisches Korrespondenzblatt
Anomalous Heat Conduction and Anomalous Diffusion in Low Dimensional Nanoscale Systems
Creators: name: Liu, Sha
name: Xu, Xiangfan
name: Xie, Rongguo
name: Zhang, Gang
name: Li, Baowen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Thermal transport is an important energy transfer process in nature. Phonon is the major energy carrier for heat in semiconductor and dielectric materials. In analogy to Ohm's law for electrical conductivity, Fourier's law is a fundamental rule of heat transfer in solids. It states that the thermal conductivity is independent of sample scale and geometry. Although Fourier's law has received great success in describing macroscopic thermal transport in the past two hundreds years, its validity in low dimensional systems is still an open question. Here we give a brief review of the recent developments in experimental, theoretical and numerical studies of heat transport in low dimensional systems, include lattice models, nanowires, nanotubes and graphenes. We will demonstrate that the phonon transports in low dimensional systems super-diffusively, which leads to a size dependent thermal conductivity. In other words, Fourier's law is breakdown in low dimensional structures.
Re:Crete – Reuse of concrete blocks from cast-in-place building to arch footbridge
Creators: name: Devènes, Julie
name: Brütting, Jan
name: Küpfer, Célia
name: Bastien-Masse, Maléna
name: Fivet, Corentin
Publisher: name: Zenodo
Year: 2022
Subjects: reuse
concrete
existing structures
footbridge
arch
structural design
life cycle assessment
circular economy

description: About 9% of anthropogenic greenhouse gas emissions worldwide are due to the production of cement, key constituent of concrete. Concrete also contributes to a large share of demolition waste, usually coming from building structures that are discarded because of functional obsolescence rather than of technical deficiency. Current practice for treating end-of-life concrete is to landfill or crush it into aggregates used in new concrete mixes. Instead, a little-explored strategy consists in extending the service life of concrete elements by reusing them in new constructions. Following this paradigm, this paper presents a proof-of-concept prototype that reuses blocks cut out of obsolete cast-in-place concrete walls for a new structural application: a 10 m-long post-tensioned segmented arch footbridge. The paper details the design, material sourcing, and construction processes while highlighting the unusual features of the approach. The structural behavior is verified with a finite element analysis model and validated by load testing. A comparative life cycle assessment shows that the arch construction presents a significantly lower global warming potential then recycled concrete (−71%) or steel (−74%) alternatives and is very competitive to a timber one (+9%). In conclusion, the project proves the feasibility of a new circular economy application for the construction industry, in which new and reliable concrete structures are built with little to no cement inputs.
description: Draft submitted for journal publication on February 15, 2022
Sudan's foreign policy under Nimeri, 1969-1980
Creators: name: Al-Saadoon, Abdullatif
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: DT 157.6 S32 1981 Fiche
subject: Sudan - Foreign relations
subject: al-Numayri, Ja-far Muhammad

description: Bibliography: p. 120-127.
Damping of Bloch oscillations in the Hubbard model
Creators: name: Eckstein, Martin
name: Werner, Philipp
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using nonequilibrium dynamical mean-field theory, we study the isolated Hubbard model in a static electric field in the limit of weak interactions. Linear response behavior is established at long times, but only if the interaction exceeds a critical value, below which the system exhibits an AC-type response with Bloch oscillations. The transition from AC to DC response is defined in terms of the universal long-time behavior of the system, which does not depend on the initial condition.
description: 4 pages, 3 figures
JUNO’s prospects for atmospheric neutrinos
Creators: name: Rifai, Mariam
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: International Workshop on Multi-messenger Tomography of the Earth, Paris, France, 4 Jul 2023 - 7 Jul 2023
description: The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation neutrino detector under construction in Guangdong, China. With a 20-kt target, JUNO will be the largest liquid scintillator (LS) detector ever built. JUNO’s instrumental setup includes nearly 18,000 20-inch photomultiplier tubes, providing an extensive 78% optical coverage.The primary objective of JUNO is to determine the neutrino mass ordering (NMO) by studying the vacuum-dominated oscillation pattern of reactor antineutrinos. However, JUNO’s physics potential extends beyond reactor neutrinos thanks to its unique design. JUNO will be able to probe atmospheric neutrinos at lower energies than the current large water/ice Cherenkov detectors. This talk will provide current updates on various aspects of atmospheric neutrino research at JUNO, including a preliminary sensitivity study to NMO, energy and directionality reconstruction, neutrino interaction models in LS, and a primary neutrino energy spectrum based on a probabilistic unfolding method.
Alvaro Obregon and United States: Mexico-American relations, 1920-1924
Creators: name: Ambrosi, Joseph Graham
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: F 1234 A49 1981 Fiche
subject: United States - Foreign relations - Mexico
subject: Mexico - Foreign relations - United States
subject: Mexico - History - 1910-1946
subject: Obregon, Alvaro, pres. Mexico, 1880-1926

description: Bibliography: p. 135-147.
Magnetohydrodynamic Waves in Partially Ionized Prominence Plasmas
Creators: name: Soler, Roberto
name: Ballester, Jose Luis
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Prominences or filaments are cool clouds of partially ionized plasma living in the solar corona. Ground- and space-based observations have confirmed the presence of oscillatory motions in prominences and they have been interpreted in terms of magnetohydrodynamic (MHD) waves. Existing observational evidence points out that these oscillatory motions are damped in short spatial and temporal scales by some still not well known physical mechanism(s). Since prominences are partially ionized plasmas, a potential mechanism able to damp these oscillations could be ion-neutral collisions. Here, we will review the work done on the effects of partial ionization on MHD waves in prominence plasmas.
description: Review paper to appear in Astrophysics and Space Science Proceedings
A literature review of the social and economic impacts of land use change: A visual summary
Creators: name: Beingessner, Naomi
name: Annie, McKee
Publisher: name: The James Hutton Institute.
Year: 2023

description: This is a visual summary of the following report: 'A literature review of the social and economic impacts of land use change' by A. McKee and N. Beingessner, James Hutton Institute, November 2023. DOI: 10.5281/zenodo.10143949
title: Το θραύσμα ως εργαλείο μετασχηματισμού_ Η περίπτωση της Ακαδημίας Πλάτωνος
title: Fragment as a tool for transformation_The case of Plato's Academy in Athens
Creators: name: Τσουκαλα Σελενα-Ελενη
Publisher: name: Technical University of Crete
Year: 2022

description: Η ζωή των κατοίκων της Αθήνας εκτυλίσσεται από μια σκοπιά, ανάμεσα σε αρχαία θραύσματα. Στην ιδιότυπη γειτονιά της Ακαδημίας Πλάτωνος όπου κείτεται και το ομώνυμο πάρκο συναντάει κανείς θραύσματα από διαφορετικές φάσεις του αρχαίου κόσμου. Η παρούσα διπλωματική εργασία με πεδίο έρευνας το πάρκο της Ακαδημίας Πλάτωνος εκκινεί από την έννοια του θραύσματος και επιχειρεί να το χρησιμοποιήσει ως βασικό συνθετικό εργαλείο στην ανασύνταξη του πάρκου. Καταρχήν, το πάρκο αντιμετωπίζεται ως ένα πεδίο πυκνής βλάστησης, φαινομενικά ανοργάνωτης, η οποία όμως διακόπτεται σχεδόν ακαριαία ώστε να «ανοίξει» σε χωρικά συμβάντα-ξέφωτα. Τα ξέφωτα αυτά, αντιμετωπίζονται ως μικρόκοσμοι, οι οποίοι προσπαθούν να αφηγηθούν την ιστορία ενός παλίμψηστου που μοιάζει να είχε εγγραφεί στον τόπο της Ακαδημίας Πλάτωνος αιώνες πριν, αλλά στην πραγματικότητα δεν υπήρξε ποτέ. Τα ξέφωτα αυτά, ως σύγχρονα «ευρήματα» μαζί με τα αρχαία ευρήματα, επιδιώκουν να αποτελέσουν ένα περιβάλλον ώσμωσης της δημόσιας ζωής και της συλλογικής μνήμης σε έναν κατεξοχήν ιστορικό τόπο, ο οποίος στην παρούσα κατάστασή του μοιάζει αποξενωμένος και αποκομμένος όχι μόνο από το αρχαιολογικό απόθεμα της Αθήνας αλλά και από τον ίδιο του τον εαυτό.
Melt-growth dynamics in CdTe crystals
Creators: name: Zhou, X. W.
name: Ward, D. K.
name: Wong, B. M.
name: Doty, F. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use a new, quantum-mechanics-based bond-order potential (BOP) to reveal melt-growth dynamics and fine-scale defect formation mechanisms in CdTe crystals. Previous molecular dynamics simulations of semiconductors have shown qualitatively incorrect behavior due to the lack of an interatomic potential capable of predicting both crystalline growth and property trends of many transitional structures encountered during the melt $\rightarrow$ crystal transformation. Here we demonstrate successful molecular dynamics simulations of melt-growth in CdTe using a BOP that significantly improves over other potentials on property trends of different phases. Our simulations result in a detailed understanding of defect formation during the melt-growth process. Equally important, we show that the new BOP enables defect formation mechanisms to be studied at a scale level comparable to empirical molecular dynamics simulation methods with a fidelity level approaching quantum-mechanical methods
Impressum
Creators: name: Baumgartner, Catharina
name: Heindl, Patrizia
name: Lindner, Marie-Hélène
name: Preisigke-Borsian, Julia
name: Schlüter, Sarah
Publisher: name: Distant Worlds Journal
Year: 2020

description: Distant Worlds Journal, Nr. 5 (2020): Ideologie und Organisation: Komparative Untersuchungen antiker Gesellschaften
Unbequeme Altlasten. Zum Denkmalwert von Kernkraftwerken
Creators: name: Bastgen, Michael Maria
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2020

description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 68 (2019): ICOMOS – Hefte des Deutschen Nationalkomitees
Interaction effects on thermal transport in quantum wires
Creators: name: Levchenko, Alex
name: Micklitz, Tobias
name: Ristivojevic, Zoran
name: Matveev, K. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a theory of thermal transport of weakly interacting electrons in quantum wires. Unlike higher-dimensional systems, a one-dimensional electron gas requires three-particle collisions for energy relaxation. The fastest relaxation is provided by the intrabranch scattering of comoving electrons which establishes a partially equilibrated form of the distribution function. The thermal conductance is governed by the slower interbranch processes which enable energy exchange between counterpropagating particles. We derive an analytic expression for the thermal conductance of interacting electrons valid for arbitrary relation between the wire length and electron thermalization length. We find that in sufficiently long wires the interaction-induced correction to the thermal conductance saturates to an interaction-independent value.
description: 14 pages, 4 figures
Tests of Modulated Intensity Small Angle Scattering in time of flight mode
Creators: name: Brandl, G.
name: Lal, J.
name: Carpenter, J.
name: Crow, L.
name: Robertson, L.
name: Georgii, R.
name: Böni, P.
name: Bleuel, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report results of tests of the MISANS technique at the CG-1D beamline at High Flux Isotope Reactor (HFIR), Oak Ridge National Laboratory (ORNL). A chopper at 40 Hz simulated a pulsed neutron source at the beamline. A compact turn-key MISANS module operating with the pulsed beam was installed and a well characterised MnSi sample was tested. The feasibility of application of high magnetic fields at the sample position was also explored. These tests demonstrate the great potential of this technique, in particular for examining magnetic and depolarizing samples, under extreme sample environments at pulsed sources, such as the Spallation Neutron Source (SNS) or the planned European Spallation Source (ESS).
description: 5 pages, 5 figures
Movements, activity patterns and denning habits of the striped skunk (Mephitis Mephitis) in the mixed grass prairie
Creators: name: Andersen, Per A.
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: QL 737 C25 A52 1981 Fiche
subject: Striped skunk - Alberta - Behavior
subject: Striped skunk - Saskatchewan - Behavior

description: Bibliography: p. 207-210.
Vacuum energy of Schrödinger operators on metric graphs
Creators: name: Harrison, J. M.
name: Kirsten, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an integral formulation of the vacuum energy of Schrödinger operators on finite metric graphs. Local vertex matching conditions on the graph are classified according to the general scheme of Kostrykin and Schrader. While the vacuum energy of the graph can contain finite ambiguities the Casimir force on a bond with compactly supported potential is well defined. The vacuum energy is determined from the zeta function of the graph Schrödinger operator which is derived from an appropriate secular equation via the argument principle. A quantum graph has an associated probabilistic classical dynamics which is generically both ergodic and mixing. The results therefore present an analytic formulation of the vacuum energy of this quasi-one-dimensional quantum system which is classically chaotic.
description: 10 pages, to appear in proceedings of QFEXT11 (IJMPCS, World Scientific)
SG-classes, singular symplectic geoemtry, and order preserving isomorphisms
Creators: name: Contini, Alessandro Pietro
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Singular Analysis
subject: Fourier Integral Operators
subject: Symplectic Geometry
subject: Singuläre Analysis
subject: Fourier-Integraloperatoren
subject: Symplektische Geometrie
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Die geometrischen Kalküle von Pseudo-differenzial- und Fourier-Integraloperatoren beruhen auf den symplektischen Eigenschaften des Kotangentialbündels. Um neue Kalküle zu entwickeln, die an eine besondere Geometrie angepasst sind, ist es nötig, singulär-symplektische Mannigfaltigkeiten zu betrachten. Diese müssen zuerst verstanden werden, bevor man die zugehorigen Operatorkalküle konstruieren kann. In dieser Dissertation geben wir neue Einblicke in die singulär-symplektischen Strukturen, die aus asymptotisch-Euklidischen Mannigfaltigkeiten entstehen. Insbesondere rechnen wir aus, wie die Poisson-Klammer auf SG-Pseudo-Differenzialoperatoren wirkt, und definieren eine neue Klasse symplektischer Abbildungen, die an die geometrischen Besonderheiten angepasst sind. Wir betrachten außerdem die ordnungserhaltenden Isomorphismen der SG-Algebra und zeigen, dass unser Konzept von singulär-symplektischen Abbildungen natürlich in diesem Zusammenhang auftaucht. Wir benutzen es, um diese Isomorphismen als Konjugation mit einem SG-Fourier-Integraloperator zu charakterisieren.
description: The geometric theory of pseudo-differential and Fourier Integral Operators relies on the symplectic structure of cotangent bundles. If one is to study calculi with some specific feature adapted to a geometric situation, the corresponding notion of cotangent bundle needs to be adapted as well and leads to spaces with a singular symplectic structure. Analysing these singularities is a necessary step in order to construct the calculus itself. In this thesis we provide some new insights into the symplectic structures arising from asymptotically Euclidean manifolds. In particular, we study the action of the Poisson bracket on SG-pseudo-differential operators and define a new class of singular symplectomorphisms, taking into account the geometric picture. We then consider this notion in the context of the characterisation of order-preserving isomorphisms of the SG-algebra, and show that these are in fact given by conjugation with a Fourier Integral Operator of SG-type.
Two-Boson Exchange Physics: A Brief Review
Creators: name: Yang, Shin Nan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Current status of the two-boson exchange contributions to elastic electron-proton scattering, both for parity conserving and parity-violating, is briefly reviewed. How the discrepancy in the extraction of elastic nucleon form factors between unpolarized Rosenbluth and polarization transfer experiments can be understood, in large part, by the two-photon exchange corrections is discussed. We also illustrate how the measurement of the ratio between positron-proton and electron-proton scattering can be used to differentiate different models of two-photon exchange. For the parity-violating electron-proton scattering, the interest is on how the two-boson exchange (TBE), γZ-exchange in particular, could affect the extraction of the long-sought strangeness form factors. Various calculations all indicate that the magnitudes of effect of TBE on the extraction of strangeness form factors is small, though can be large percentage-wise in certain kinematics.
description: 6 pages, 5 figures, prepared for Proceedings of the fifth Asia-Pacific Conference on Few-Body Problems in Physics (APFB2011), Seoul, Korea, August 22-26, 2011, to appear in Few-Body Systems, November 2011
Heeding the Call: A Status Report on the White House OSTP Public-Access Guidance and an Overview of Open Scholarship Tools and Platforms Available for Use by UMD Researchers
Creators: name: Lim, Adriene
name: Cohen, Philip
name: Weiss, Sarah
name: Owen, Terry
name: Ball, Gregory
Publisher: name: Digital Repository at the University of Maryland
Year: 2023

description: This panel presentation includes the latest news about federal agencies’ responses to the OSTP’s “Nelson Memo” on public access to research publications and data and will include a practical overview of open scholarship tools and platforms that UMD researchers may wish to use now, including the Open Science Framework, DataCite, GitHub, Dryad, QDR, DRUM, and preprint repositories like SocArXiv. This online workshop is part of a series of webinars commemorating the OSTP’s Year of Open Science, and is sponsored by UMD PACT and the UMD Libraries.
Usos tradicionales del fuego en las actividades agrícolas de la parroquia Convento, cantón Chone, Manabí, Ecuador
Creators: name: Ramos Rodríguez, Marcos Pedro
name: Alcívar Cobeña, Andreina
name: Cedeño Luna, Nathaly Adriana
name: Manrique Toala, Tayron Omar
Publisher: name: figshare
Year: 2022
Subjects: Forestry fire management

description: El uso del fuego por los productores agrícolas es una práctica común que ha sido utilizada desde tiempos inmemoriales en la mayoría de los países del mundo. El objetivo de este trabajo fue diagnosticar los usos tradicionales del fuego en las actividades agrícolas de la parroquia Convento, cantón Chone, Manabí, Ecuador. Las informaciones que forman el diagnóstico se obtuvieron aplicando una encuesta semiestructurada con preguntas abiertas y cerradas a 70 productores rurales del sitio Gaspar en la parroquia Convento durante los meses octubre y noviembre del 2020. El análisis estadístico se realizó con el programa SPSS (Versión 22.0). Los resultados muestran que el uso del fuego en la localidad es común y que la mayoría quema siempre en los mismos lugares. Aunque plantearon no quemar en fechas específicas, diciembre fue el mes mencionado con mayor frecuencia, siendo el área quemada promedio de 1,82 ha. Las finalidades más importantes del uso del fuego en la localidad fueron quema de residuos de cultivos agrícolas y la limpieza de terrenos para sembrar o plantar. Las principales medidas de prevención que se tienen en cuenta en la localidad para usar el fuego fueron construir brechas alrededor del área a quemar y observar la velocidad y dirección del viento. La percepción de los productores sobre los efectos negativos causados por el fuego pudo calificarse de muy alta, pues todos los encuestados dijeron que el fuego daña al suelo y al medio ambiente. Los resultados pueden ser utilizados por los decisores en el ámbito del manejo del fuego.
An updated determination of α_s from tau decays
Creators: name: Boito, Diogo
name: Golterman, Maarten
name: Jamin, Matthias
name: Mahdavi, Andisheh
name: Maltman, Kim
name: Osborne, James
name: Peris, Santiago
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Employing our previous framework to treat non-perturbative effects self-consistently, including duality violations, we update the determination of the strong coupling, α_s, using a modified version of the 1998 OPAL data, updated to reflect current values of exclusive mode hadronic τdecay branching fractions. Our best n_f=3 values from the updated OPAL data are α_s(m^2_τ)=0.325+-0.018 and α_s(m^2_τ)=0.347+-0.025 in fixed-order and contour-improved perturbation theory, respectively. To account for non-perturbative effects, non-linear, multi-parameter fits are necessary. We have, therefore, investigated the posterior probability distribution of the model parameters underlying our fits in more detail. We find that OPAL data alone provide only weak constraints on some of the parameters needed to model duality violations, especially in the case of fits involving axial vector channel data, making additional prior assumptions on the expected size of these parameters necessary at present. We provide evidence that this situation could be greatly improved if hadronic spectral functions based on the high-statistics BaBar and Belle data were to be made available.
description: 26 pages, 6 figures
FAIR-DOscope - Explore the facets of FAIR Digital Objects
Creators: name: Jejkal, Thomas
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022

description: Working in the realm of FAIR Digital Objects can be very abstract and sometimes overwhelming. There are so many aspects which have to be addressed in order to create a first FAIR Digital Object. And if this is done, the only thing you get is a PID expected to be machine actionable by metadata available in its PID record. But which metadata is in there? Were all fields properly filled? Which relationships exist with other FAIR Digital Objects? For someone who is taking his/her first steps towards FAIR Digital Objects, answering these questions in an easy and user-friendly way is crucial to fulfill his/her task and FAIR-DOscope is supposed to give answers to these questions. With FAIR-DOscope we provide a tool which resolves and visualizes FAIR Digital Objects in any Web browser. The result is rendered in two different ways: a tabular view showing the content of the PID record and a graphical view showing links to related FAIR Digital Objects. Both views allow further interaction, e.g., redirect to data type information stored in a Data Type registry or navigating through the FAIR Digital Object graph by clicking its nodes. FAIR-DOscope may be used locally or provided as a remotely accessible service via the internet. In the poster we will show how FAIR-DOscope looks like, how it can be used and what happens in the background to obtain the information presented to the user. Furthermore, we will give an outlook on our future plans for this tool, which already offers a very easy entry point for consuming FAIR Digital Objects and will be the basis for opening them also to scientists of the Helmholtz Association and beyond. This work has been supported by the research program ‘Engineering Digital Futures’ of the Helmholtz Association of German Research Centers and the Helmholtz Metadata Collaboration Platform.
A procedure to determine wilderness capacity estimates
Creators: name: Beaudry, John J.
Publisher: name: Environmental Design
Year: 1980
Subjects: subject: QH 75 B42 1984
subject: Wilderness areas - Management
subject: Wilderness areas - Vistors
subject: Wilderness areas - Montana - Anaconda - Pintler Wilderness
subject: Campsites, Facilities, Etc.
subject: Trails
subject: Grazing

description: Bibliography: p. 115-121.
THE FUNCTION OF IT IN ENGLISH LANGUAGE INSTRUCTION: ENHANCING LANGUAGE ACQUISITION   IN THE DIGITAL AGE
Creators: name: Nabijonova, Nilufar
Publisher: name: Zenodo
Year: 2023

description: The article emphasizes how information technology (IT) has revolutionized English language instruction. The advantages of IT are mentioned in the abstract, including easier access to real resources, interactive teaching tools, virtual communication, individualized instruction, multimodal learning, and online evaluation. It highlights how IT gives students more authority, improves engagement, and gives them the tools they need for effective global communication.
Neue Untersuchungen an der Wallburg Alte Burg bei Bad Laasphe
Creators: name: Zeiler, Manuel
name: Johanning, Carolin
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2020

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2018 (2019)
Turbulence and Chaos in Anti-de-Sitter Gravity
Creators: name: de Oliveira, H. P.
name: Zayas, Leopoldo A. Pando
name: Terrero-Escalante, Cesar A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Due to the AdS/CFT correspondence the question of instability of Anti-de-Sitter spacetimes sits in the intersection of mathematical and numerical relativity, string theory, field theory and condensed matter physics. In this essay we revisit that important question emphasizing the power of spectral methods and highlighting the effectiveness of standard techniques for studying nonlinear dynamical systems. In particular we display explicitly how the problem can be modeled as a system on nonlinearly coupled harmonic oscillators. We highlight some of the many open questions that stem from this result and point out that a full understanding will necessarily required the interdisciplinary cooperation of various communities.
description: 6 pages, 12 figures. Essay awarded honorable mention in the Gravity Research Foundation essay competition 2012
Preprocessing and filtering of digitally correlated gestalt data
Creators: name: Kok, Ah Loy
Publisher: name: University of Calgary
Year: 1986
Subjects: subject: TA 593 K635 1986
subject: Aerial photogrammetry
subject: Signal processing - Digital techniques
subject: Digital filters (Mathematics)
subject: Fourier transformations

description: Bibliography: p. 129-132.
Anne Hebert Romanciere: images d'un monde clos
Creators: name: Berkhout, Denise
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: PS 9515 E22 Z548 1981 Fiche
subject: Hebert, Anne, 1916- - Criticism and interpretation
subject: Isolation (Philosophy)
subject: Alienation (Social Psychology) in literature

description: Bibliography: p. 81-85.
Upper devonian-lower carboniferous miospore biostratigraphy of the Imperial Formation, District of Mackenzie and Yukon
Creators: name: Braman, D. R.
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: QE 996 B72 1981 Fiche
subject: Spores (Botany), Fossil
subject: Palynology - Northwest Territories
subject: Palynology - Yukon Territory
subject: Geology, Stratigraphic - Devonian
subject: Geology, Stratigraphic - Carboniferous

description: Bibliography: p. 268-312.
Introduction to LOD: Publishing and Querying Linked Open Data
Creators: name: Julia Röttgermann
name: Tinghui Duan
name: Johanna Konstanciak
Publisher: name: Zenodo
Year: 2023
Subjects: SPARQL
Wikidata
MiMoText
Universität Rostock
Digitale Hermeneutik

description: Publishing and Querying Linked Open Data – Showcase MiMoText and Wikidata [Slides]

 

Linked Open Data (LOD) is a set of procedures and rules for publishing openly available data, and enabling their connection with other data from different sources and formats. These rules can also be applied to the structuring of available information in digital editions and corpora so that this information can be linked together and made easily searchable.

The workshop "Introduction to LOD: From Digital Scholarly Editions and Text Collections to the Web of Data" offers an introduction to the concepts and standards of LOD, combined with the application of this technology to digital editions and literary corpora. The workshop is organized by the Junior Professorship for Digital Humanities and the research focus "Digital Hermeneutics" of the Department "Knowledge - Culture - Transformation" at the University of Rostock.

In the first part of the workshop on September 20th, Christopher Pollin from the University of Graz will present basic concepts of Linked Open Data. Their relevance and application for digital editions will be discussed and put into practice, using historical account books as an example. On September 21st, Julia Röttgermann, Johanna Konstanciak and Tinghui Duan from the University of Trier will give a practical introduction to LOD using data from Wikidata and from the project "Mining and Modeling Text" (MiMoText). The relationships between personal data (authors), location data (places of action and publication of the works, and partly historical place names), time data (date of first publication) and topics will be explored and introduced using the SPARQL query language.

 

21.09.2023, 9:00-16:00

Publishing and Querying Linked Open Data – Showcase MiMoText and Wikidata

Trainers: Julia Röttgermann (University of Trier), Johanna Konstanciak (University of Trier), Tinghui Duan (University of Trier)

- Introduction to the project “Mining and Modeling Text” (MiMoText)

- Introduction to Wikibase as infrastructure

- Querying MiMoTextBase

- Querying Wikidata

- Federated Queries

 

Further information on MiMoTextBase can be found here: https://mimotext.github.io/MiMoTextBase_Tutorial/
Control over topological insulator photocurrents with light polarization
Creators: name: McIver, J. W.
name: Hsieh, D.
name: Steinberg, H.
name: Jarillo-Herrero, P.
name: Gedik, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Three-dimensional topological insulators represent a new quantum phase of matter with spin-polarized surface states that are protected from backscattering. The static electronic properties of these surface states have been comprehensively imaged by both photoemission and tunneling spectroscopies. Theorists have proposed that topological surface states can also exhibit novel electronic responses to light, such as topological quantum phase transitions and spin-polarized electrical currents. However, the effects of optically driving a topological insulator out of equilibrium have remained largely unexplored experimentally, and no photocurrents have been measured. Here we show that illuminating the topological insulator Bi2Se3 with circularly polarized light generates a photocurrent that originates from topological helical Dirac fermions, and that reversing the helicity of the light reverses the direction of the photocurrent. We also observe a photocurrent that is controlled by the linear polarization of light, and argue that it may also have a topological surface state origin. This approach may allow the probing of dynamic properties of topological insulators and lead to novel opto-spintronic devices.
description: Accepted in Nature Nanotechnology, November 2 2011
Superconductor-insulator-ferromagnet-superconductor Josephson junction: From the dirty to the clean limit
Creators: name: Pugach, N. G.
name: Kupriyanov, M. Yu.
name: Goldobin, E.
name: Kleiner, R.
name: Koelle, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The proximity effect and the Josephson current in a superconductor-insulator-ferromagnet-superconductor (SIFS) junction are investigated within the framework of the quasiclassical Eilenberger equations. This investigation allows us to compare the dirty and the clean limits, to investigate an arbitrary impurity scattering, and to determine the applicability limits of the Usadel equations for such structures. The role of different types of the FS interface is analyzed. It is shown that the decay length and the spatial oscillation period of the Eilenberger function may exhibit a nonmonotonic dependence on the properties of the ferromagnetic layer such as exchange field or electron mean free path. The results of our calculations are applied to the interpretation of experimentally observed dependencies of the critical current density on the ferromagnet thickness in Josephson junctions containing a Ni layer with an arbitrary scattering.
description: 15 pages, 7 figures, to be published in Phys. Rev. B
Marketing patterns and dependence in a Yucatecan Mayan community
Creators: name: Brown, Denise Fay
Publisher: name: University of Calgary
Year: 1981
Subjects: subject: F 1435.3 C6 B76 1981 Fiche
subject: Indians of Central America - Commerce
subject: Mayas
subject: Yucatan (Mexico : State) - Commerce
subject: Peasantry - Mexico - Yucatan

description: Bibliography: p. 191-200.