cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Eine App für Informationsverhaltensforschung
Creators: name: Perrey, Lennart
name: Henkel, Maria
name: Peters, Isabella
Publisher: name: Zenodo
Year: 2022
Subjects: desinformation
gesundheit
informationsverhalten
applikation

description: Um die zugrundeliegenden Mechanismen der Verbreitung digitaler (wissenschaftlicher) Desinformation zu verstehen und ihnen später effektiv entgegenzuwirken, ist ein ganzheitliches Bild der relevanten Aspekte von Desinformationsverhalten (DIV) nötig. Ziel des Projekts DESIVE² ist es, über qualitative Methoden im Austausch mit einem Proband:innen-Panel ein vertieftes Verständnis von DIV zu erhalten, das insbesondere betrachtet, welche subjektiven Auslöser zur Verbreitung von wissenschaftlicher Desinformation führen. Das Poster stellt die technische Entwicklung, Implementierung und Betreuung einer App (inkl. Datenbank) vor, die für die medienbruchlose Interaktion und Kommunikation mit dem Proband:innen-Panel sowie die In Situ-Forschung entwickelt wird, und die Sammlung und Bereitstellung von Fallbeispielen für Critical Incidents in wissenschaftlicher Gesundheitsdesinformation umfasst.
description: Das Verbundprojekt "DESIVE2 – Desinformationsverhalten verstehen" (Förderkennzeichen: 16KIS1528K) wird durch das Bundesministerium für Bildung und Forschung im Rahmen der Maßnahme "Forschung Agil – Erkennen und Bekämpfung von digitalen Desinformationskampagnen" gefördert.
description: {"references": ["Brandt, J., Weiss , N., & Klemmer, S. R. (2007). txt 4 l8r: lowering the burden for diary studies under mobile conditions . In M. B. Rosson & D. Gilmore (Hrsg.), CHI EA '07: CHI'07 Extended Abstracts on Human Factors in Computing Systems (S. 2303-2308). Association for Computing Machinery. https://doi.org/10.1145/1240866.1240998", "Charmaz, K. (2014). Constructing Grounded Theory SAGE Publishing.", "Flanagan, J. C. (1954). The critical incident technique. Psychological Bulletin, 51(4), 327 358. https://doi.org/10.1037/h0061470", "Glaser, B. G., & Strauss , A. (1967). The discovery of grounded theory: Strategies for qualitative research. Routledge. https://doi.org/10.4324/9780203793206"]}
IVOCT catheter tracking and targeted drug delivery using magnetic particle imaging and magnetic particle navigation
Creators: name: Griese, Florian
Publisher: name: TUHH Universitätsbibliothek
Year: 2020
Subjects: subject: Magnetic Particle Imaging (MPI)
subject: Magnetic Particle Navigation (MPN)
subject: intravascular optical coherence tomography (IVOCT)
subject: Catheter Tracking
subject: Bifurcation
subject: Target Drug Delivery
classificationCode: 570
subject: Biowissenschaften, Biologie
classificationCode: 610
subject: Medizin
classificationCode: 620
subject: Ingenieurwissenschaften

description: Magnetic-Particle-Imaging (MPI) visualisiert die quantitative Verteilung von magnetischen Nanopartikeln mit statischen und oszillierenden Magnetfeldern. In dieser Arbeit wird eine submillimetergenaue Lokalisierungsmethode entwickelt, um Markierungen für die Registrierung von MRT- und MPI-Volumen zu identifizieren. Mit dieser Methode wird auch ein IVOCT-Katheter in 4D bimodal mit MPI verfolgt. Des Weiteren werden Magnetic-Particle-Imaging und Magnetic-Particle-Navigation verwendet, um magnetische Partikel durch eine Verzweigung zu navigieren. Zuletzt wird die easy-axis-Orientierung von Proben mit dem neuartigen easy-axis-aligned-MPI-Kontrast bestimmt.
description: The modality Magnetic Particle Imaging (MPI) visualizes the quantitative distribution of magnetic nanoparticles by using static and oscillating magnetic fields. In this work, a submillimeter-accurate localization method is developed to identify fiducial markers more precisely for the registration of MRI and MPI volumes. With this method a IVOCT catheter is also tracked in 4D for bimodal imaging of IVOCT and MPI. Further, the method of Magnetic Particle Imaging and Magnetic Particle Navigation is used to navigate magnetic particles through a bifurcation within a vascular flow. Finally, the novel easy-axis aligned MPI contrast is used to determine the easy-axis orientation of samples.
Content analysis of online personal advertisements : attributes desired and offered
Creators: name: Leung, Amy Qui Ling
Publisher: name: University of British Columbia
Year: 2010

description: The evolutionary perspective has often been used in the study of mate preferences. Guided by an evolutionary-based theory called Sexual Strategies Theory (Buss, 1994), the current research examined the effect of the type of relationship sought, represented by an intimate encounter, a date, and a relationship, on attributes desired and offered by online dating ad placers. Online personal advertisements (N = 120) from a Canadian dating web site were content analyzed for the following attributes: physical attractiveness, resources, commitment, social skills, social attitudes, and interests. Attributes desired and offered did not differ by gender but did differ by type of relationship. Ad placers desired more commitment, social skills, and social attitudes when seeking a relationship than an intimate encounter. These attributes, in addition to resources, were offered more when seeking a relationship than an intimate encounter. Contrary to the theory, physical attractiveness was not desired or offered more when seeking an intimate encounter and to date compared to a relationship. Gender moderated the relationship between type of relationship sought and resources offered but none of the other attributes. A shift away from gender differences in mate preferences is suggested. The limitations of the theory for explaining the results are discussed and alternative explanations are provided.
Host-parasite interactions of Tribolium confusum and Tribolium castaneum with Hymenolepis diminuta
Creators: name: Soltice, Gordon Edward
Publisher: name: University of Calgary
Year: 1969
Subjects: subject: QL 757 S68 1969
subject: Parasites
subject: Tenebrionidae
subject: Hymenolepis
subject: Tribolium castaneum
subject: Tribolium confusum

description: Bibliography: p. 31-35.
Kompetenzorientiert beurteilen
Creators: name: Lötscher, Hanni (Herausgeber/in)
name: Naas, Marcel (Herausgeber/in)
name: Roos, Markus (Herausgeber/in)
Publisher: name: Zenodo
Year: 2023
Subjects: Beurteilen
Leistungsbeurteilung
Diagnostische Kompetenz
Kompetenzorientierung
Lehrplan 21

description: Kompetenzorientierter Unterricht erfordert eine Weiterentwicklung der Beurteilung. In diesem Buch werden neue Konzepte und Vorgehensweisen vorgestellt, die Lehrpersonen der Volksschule als Orientierungshilfe bei der kompetenzorientierten Beurteilung dienen können. Dabei spielen Diagnosen sowohl für die fördernde als auch für die abschließende Beurteilung eine zentrale Rolle. Auf einen (allgemein-)didaktischen und lernpsychologischen Grundlagentext folgen neun fachdidaktische Beiträge mit anschaulichen Unterrichtsbeispielen aus allen drei Zyklen.
description: + ID der Publikation: phlu_17264 + Art des Beitrages: Sammelband + Sprache: Deutsch + Letzte Aktualisierung: 2023-06-29 12:25:29
Tidal effects on the radial velocity curve of HD77581 (Vela X-1)
Creators: name: Koenigsberger, Gloria
name: Moreno, Edmundo
name: Harrington, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The mass of the neutron star in Vela X-1 has been found to be more massive than the canonical 1.5 Mo. This result relies on the assumption that the amplitude of the optical component's measured radial velocity curve is not seriously affected by the interactions in the system. In this paper we explore the effect on the radial velocity curve caused by surface motions excited by tidal interactions. We use a calculation from first principles that involves solving the equations of motion of a Lagrangian grid of surface elements. The velocities on the visible surface of the star are projected along the line-of-sight to the observer to obtain the absorption-line profile in the observer's reference frame. The centroid of the line-profiles for different orbital phases is then measured and a simulated RV curve constructed. Models are run for the "standard" (vsini=116 km/s) and "slow" (56 km/s) supergiant rotation velocities. We find that the surface velocity field is complex and includes fast, small-spatial scale structures. It leads to strong variability in the photospheric line profiles which, in turn, causes significant deviations from a Keplerian RV curve. The peak-to-peak amplitudes of model RV curves are in all cases larger than the amplitude of the orbital motion. Keplerian fits to RV curves obtained with the "standard" rotation velocity imply a neutron star >1.7 Mo. However, a similar analysis of the "slow" rotational velocity models allows for m_ns ~ 1.5 Mo. Thus, the stellar rotation plays an important role in determining the characteristics of the perturbed RV curve. Given the observational uncertainty in GP Vel's projected rotation velocity and the strong perturbations seen in the published and the model RV curves, we are unable to rule out a small (~1.5 Mo) mass for the neutron star companion.
description: 14 pages, 16 figures; A&A, accepted
Der Weg zum Gelingenden Dasein in G. Kellers Dei Leute von Seldwyla
Creators: name: Schulze, Alfred Hartwig
Publisher: name: University of Calgary
Year: 1968
Subjects: subject: PT 2374 L7 S33 1968
subject: Keller, Gottfried, 1819-1890. Die Leute von Seldwyla
subject: Success in literature

description: Bibliography: p. 92-96.
Additivity of Handle Number and Morse-Novikov Number of a-small Knots
Creators: name: Manjarrez-Gutiérrez, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M

description: A knot is an a-small knot if its exterior does not contain closed incompressible surfaces disjoint from some incompressible Seifert surface for the knot. Using circular thin position for knots we prove that the handle number is additive under the connected sum of two a-small knots. As a consequence the Morse-Novikov number turns out to be additive under the connected sum of two a-small knots.
description: 15 pages, 1 figure
title: Dock Replacement (NWS-2022-39, Nevin)
titleType: AlternativeTitle
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the Issuance of Permits for Six Dock Projects under Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act for Actions Related to Structures in the Columbia River: Nevin Dock, Benedetti/Tiedy PRF, Lee Family Dock, Fogg/Kramer Dock, Scott Dock, and Duus Dock.
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2025

description: WCRO-2023-00526 ; WCRO-2025-00298 ; WCRO-2024-02770 ; WCRO-2024-01562 ; WCRO-2024-00900 ; WCRO-2023-02198
title: Nachhaltiges Lernen
Creators: name: Lehner-Hartmann, Andrea
name: Dangl, Oskar
name: Rothgangel, Martin
Publisher: name: Universität Graz
Year: 2020

description: ÖRF - Jg. 28 (2020), H. Heft: H. 2: Nachhaltiges Lernen, S. 5-10
A VIMOS spectroscopy of photometric variables and straggler candidates in omega Centauri
Creators: name: Rozyczka, M.
name: Kaluzny, J.
name: Pietrukowicz, P.
name: Pych, W.
name: Catelan, M.
name: Contreras, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report a spectroscopic study of 19 photometric variables and 55 blue, yellow and red straggler candidates in the field of omega Centauri. We confirm the cluster membership of 18 variables and 54 straggler candidates. Velocity variations are detected in 22 objects, and another 17 objects are classified as suspected of being velocity-variable. Velocity data of 11 photometric variables phase with their photometric periods, however none of these objects has a mass function indicating the presence of a massive degenerate component. Based on both photometric and spectroscopic data we find that the fraction of binaries among blue stragglers may be as high as 69 per cent.
description: 11 pages, 11 figures
Ruderkraftmessungen und Manövrierversuche auf dem Forschungsschiff "Meteor"
Creators: name: Suhrbier, Klaus
Publisher: name: TUHH Universitätsbibliothek
Year: 1965
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Ruderkraftmessungen und Manövrierversuche auf dem Forschungsschiff "Meteor"
An all order identity between ABJM and N=4 SYM four-point amplitudes
Creators: name: Bianchi, Marco S.
name: Leoni, Matias
name: Penati, Silvia
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive an exact algebraic identity between the two-loop four-point amplitude in ABJM theory and the corresponding one-loop amplitude in N=4 SYM theory. This identity generalizes previous partial results to an exact relation valid at all orders in the IR regulator. Moreover, it allows to conjecture an exact iterative expression for the complete three dimensional amplitude in terms of the BDS ansatz for the four dimensional one, indicating that the strict relation between the two amplitudes experimented at two loops might propagate to all orders. In particular, an almost complete expression for the ABJM amplitude at four loops is derived.
description: 1+24 pages
Mixed-matrix membranes for the separation of higher hydrocarbons from permanent gas
Creators: name: Mushardt, Heike
Publisher: name: TUHH Universitätsbibliothek
Year: 2022
Subjects: subject: Mixed-matrix membranes
subject: gas separation
subject: higher hydrocarbons
subject: thin-film composite membrane
subject: separation performance
subject: POMS
subject: activated carbon
classificationCode: 660
subject: Technische Chemie

description: In dieser Arbeit wurde eine Mixed-Matrix-Kompositmembran zur selektiven Abtrennung höherer Kohlenwasserstoffe entwickelt. Eine detaillierte Untersuchung der Trennleistung unter variierenden Betriebsbedingungen wurde anhand von Einzelgasen und Gasmischungen durchgeführt, um die optimalen Betriebsbedingungen zu identifizieren und die Trennleistung hinsichtlich eines industriellen Einsatzes zu bewerten.
description: In this work a thin film mixed matrix membrane material for the selective separation of higher hydrocarbons is developed. A detailed study of the separation performance under varying single and mixed-gas operating conditions is performed to identify the optimal range of application and evaluate the performance with respect to an industrial application.
Nonstationary heat conduction in one-dimensional models with substrate potential
Creators: name: Gendelman, O. V.
name: Shvartsman, R.
name: Madar, B.
name: Savin, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The paper investigates non-stationary heat conduction in one-dimensional models with substrate potential. In order to establish universal characteristic properties of the process, we explore three different models --- Frenkel-Kontorova (FK), phi4+ ($ϕ^4$+) and phi4- ($ϕ^4-$). Direct numeric simulations reveal in all these models a crossover from oscillatory decay of short-wave perturbations of the temperature field to smooth diffusive decay of the long-wave perturbations. Such behavior is inconsistent with parabolic Fourier equation of the heat conduction and clearly demonstrates the necessity of hyperbolic models. The crossover wavelength decreases with increase of average temperature. The decay patterns of the temperature field almost do not depend on the amplitude of the perturbations, so the use of linear evolution equations for temperature field is justified. In all model investigated, the relaxation of thermal perturbations is exponential -- contrary to linear chain, where it follows a power law. However, the most popular lowest-order hyperbolic generalization of the Fourier law, known as Cattaneo-Vernotte (CV) or telegraph equation (TE) is not valid for description of the observed behavior of the models with on-site potential. In part of the models a characteristic relaxation times exhibit peculiar scaling with respect to the temperature perturbation wavelength. Quite surprisingly, such behavior is similar to that of well-known model with divergent heat conduction (Fermi-Pasta-Ulam chain) and rather different from the model with normal heat conduction (chain of rotators). Thus, the data on the non-stationary heat conduction in the systems with on-site potential do not fit commonly accepted concept of universality classes for heat conduction in one-dimensional models.
description: 9 pages, 7 figures, corrected version
Predictors of grade 3 French immersion students' reading comprehension : the role of morphological awareness, vocabulary and second language cultural knowledge
Creators: name: Denizot, Isabelle Arlette Genevieve
Publisher: name: University of British Columbia
Year: 2010

description: Research findings point to reading comprehension as an important mediator of academic achievement for French immersion students (Hogan, Caffs, & Little, 2005). This research investigated the best predictors of word reading and reading comprehension in French as a second language in 72 Grade 3 students of an early French immersion programme. The present research is based on Bemhardt’s (2005) model of second language reading, which views reading comprehension as an interactive-compensatory process. Four main questions guided this program of study: (1) What is the best predictor of word reading among phonological awareness, spelling, verbal working memory, vocabulary and morphological awareness in Grade 3 French immersion students? (2) What is the best predictor of reading comprehension among phonological awareness, spelling, verbal working memory, vocabulary and morphological awareness in Grade 3 French immersion students? (3) What is the relative role of second language cultural knowledge compared to phonological awareness, spelling, verbal working memory, vocabulary and morphological awareness in Grade 3 French immersion students’ reading comprehension? and (4) What do French immersion Grade 3 students perceive as different in a culturally less and more familiar text that affected their reading comprehension and which cultural context do they prefer and why? Results from hierarchical regression analyses showed that phonological awareness and spelling predicted word reading, whereas morphological awareness predicted reading comprehension of isolated sentences. Reading comprehension of a narrative text with more familiar cultural emphasis was predicted by receptive vocabulary (EVIP). Reading comprehension of a narrative text with less familiar cultural emphasis was predicted by second language cultural knowledge, followed by morphological awareness. However, participants perceived the culturally more familiar passage easier and perceived the culturally less familiar passage as more engaging. Thus, results from the study appear to confirm that reading is an interactive compensatory process. Several theoretical, pedagogical and programme development implications are drawn from the present research.
title: Microfluidic converging-diverging channels optimised for homogeneous extensional deformation
Creators: name: Oliveira, Monica
name: Zografos, Konstantinos
name: Pimenta, Franscisco
Publisher: name: University of Strathclyde
Year: 2016

description: Contains the information of the outline of the shapes for each optimised converging-diverging geometry. File details contained in README.txt
Tweether Project Website
Creators: name: Vilar, Ruth
Publisher: name: Zenodo
Year: 2015
Subjects: millimetre wave technology
wireless networks

description: The TWEETHER project website is available at www.tweether.eu since March, 2015.

This report describes the website sections and provides an overview of its contents. In particular, the website has a public part to facilitate the spread of project’s information to different stakeholders, a private part, accessible only by consortium members, dedicated to information exchange between partners and a reserved area for the EU Commission.
Fast Active Merging of Microdroplets in Microfluidic Chambers Driven by Photo-Isomerisation of Azobenzene Based Surfactants
Creators: name: BCHELLAOUI, Nizar
Publisher: name: figshare
Year: 2020
Subjects: subject: 29901 Biological Physics
subject: FOS: Biological sciences

description: In this work, we report on the development of a newly synthesized photoactive reversible azobenzene derived surfactant polymer, which enables active and fast control of the merging of microdroplets in microfluidic chambers, driven by a pulsed UV laser optical stimulus and the well known cis-trans photo-isomerisation of azobenzene groups. We show for the first time that merging of microdroplets can be achieved optically based on a photo-isomerization process with a high spatio-temporal resolution.
Tweether Data Management Plan
Creators: name: Vilar, Ruth
Publisher: name: Zenodo
Year: 2015
Subjects: Data Management

description: This deliverable provides the first version of the DMP elaborated by the TWEETHER project. The purpose of this report is to provide an analysis of the main elements of the data management policy that will be used with regard to all the data sets that will be generated by the project. In particular, the deliverable outlines how research data will be handled during TWEETHER and describes what data will be collected, processed or generated and following what methodology and standards, whether and how this data will be shared and/or made open, and how it will be curated and preserved.
Preparation of porous titania particles by partial dissolution and hot-water or hydrothermal treatment of hydrous titania
Creators: name: Kojima, Takashi
name: Baba, Tsukasa
name: Inamoto, Kohei
name: Isowaki, Rena
name: Yukita, Chieko
name: Ujiie, Kazuya
name: Takeda, Akiko
name: Shiba, Fumiyuki
name: Uekawa, Naofumi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: Hematology

description: Uniform-sized amorphous hydrous titania particles (HTPs) with nonporous or porous surface were prepared and subjected to hot-water or hydrothermal treatment to induce crystallisation of the titania phase for preparing porous titania particles with high specific surface area (SSA) and outer diameter in a micron order. Porous HTPs were crystallised under milder treatment conditions than those required to crystallise nonporous spherical HTPs. This difference was attributed to the difference in the polycondensation states of hydrous titania. The SSA of the porous titania particles crystallised by hot-water treatment at 80°C for 24 h was 216 m2 g−1, despite their micron-order particle size. This simple method can synthesise highly functional titania particles at low temperatures and is a general-purpose method for preparing porous particles for use as adsorbents, catalysts and catalyst supports.
Charakterisierung und numerische Simulation an Hautmodellen in einem Multi-Organ-Chip
Creators: name: Hsu, Hao-Hsiang
Publisher: name: TUHH Universitätsbibliothek
Year: 2019
Subjects: classificationCode: 570
subject: Biowissenschaften, Biologie
classificationCode: 610
subject: Medizin
classificationCode: 620
subject: Ingenieurwissenschaften

description: Tierversuche für Substanztestung sind kontrovers diskutiert. Im Bereich der Kosmetik sind diese in Europa mittlerweile verboten. Aus diesem Grunde steigt die Nachfrage nach alternativen Methoden. Ein interessanter Ansatz hierfür ist die Substanztestung in einem „organ-on-a-chip“ System. Hierfür wurde in dieser Arbeit eine Methode zur Bestimmung der Substanzpermeation von Hautmodellen in einem 96-Well Membran-Einsatzsystem entwickelt, charakterisiert und untersucht. Des Weiteren wurde eine Simulation für die Methode entwickelt, analysiert und validiert. Die Simulation ist eine gute Ergänzung zur Messmethode und reduziert den experimentellen Aufwand.
description: Animal experiment for substance testing are controversially discussed. In the field of cosmetic they are already banned in Europe. For this reason, the demand for alternative methods is increasing. An interesting approach for this is the substance testing in an "organ-on-a-chip" system. For this purpose, a method for the determination of substance permeation of skin models in a small 96 well membrane insert system was developed, characterized and investigated. Furthermore, a simulation for the method was developed, analyzed and validated. The simulation is a good addition to the measurement and reduces the experimental effort.
What Your Radiologist Might be Missing: Using Machine Learning to Identify Mislabeled Instances of X-ray Images
Creators: name: Rädsch, Tim
name: Eckhardt, Sven
name: Leiser, Florian
name: Pandl, Konstantin D.
name: Thiebes, Scott
name: Sunyaev, Ali
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021

description: Label quality is an important and common problem in contemporary supervised machine learning research. Mislabeled instances in a data set might not only impact the performance of machine learning models negatively but also make it more difficult to explain, and thus trust, the predictions of those models. While extant research has especially focused on the ex-ante improvement of label quality by proposing improvements to the labeling process, more recent research has started to investigate the use of machine learning-based approaches to identify mislabeled instances in training data sets automatically. In this study, we propose a two-staged pipeline for the automatic detection of potentially mislabeled instances in a large medical data set. Our results show that our pipeline successfully detects mislabeled instances, helping us to identify 7.4% of mislabeled instances of Cardiomegaly in the data set. With our research, we contribute to ongoing efforts regarding data quality in machine learning.
Is it the boundaries or disorder that dominates electron transport in semiconductor `billiards'?
Creators: name: Micolich, A. P.
name: See, A. M.
name: Scannell, B. C.
name: Marlow, C. A.
name: Martin, T. P.
name: Pilgrim, I.
name: Hamilton, A. R.
name: Linke, H.
name: Taylor, R. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Semiconductor billiards are often considered as ideal systems for studying dynamical chaos in the quantum mechanical limit. In the traditional picture, once the electron's mean free path, as determined by the mobility, becomes larger than the device, disorder is negligible and electron trajectories are shaped by specular reflection from the billiard walls alone. Experimental insight into the electron dynamics is normally obtained by magnetoconductance measurements. A number of recent experimental studies have shown these measurements to be largely independent of the billiards exact shape, and highly dependent on sample-to-sample variations in disorder. In this paper, we discuss these more recent findings within the full historical context of work on semiconductor billiards, and offer strong evidence that small-angle scattering at the sub-100 nm length-scale dominates transport in these devices, with important implications for the role these devices can play for experimental tests of ideas in quantum chaos.
description: Submitted to Fortschritte der Physik for special issue on Quantum Physics with Non-Hermitian Operators
ESCALATOR: Towards an inclusive and active community of practice in Digital Humanities and Computational Social Sciences in South Africa
Creators: name: Van Der Walt, Anelda
Publisher: name: Zenodo
Year: 2021
Subjects: SADiLaR
Digital Humanities
Computational Social Sciences
South Africa
Community of practice

description: This presentation provides a brief introduction to the ESCALATOR programme developed by the South African Centre for Digital Language Resources (SADiLaR). ESCALATOR aims to support the development of an active and inclusive community of practice in Digital Humanities and Computational Social Sciences in South Africa. The narrated recording is available at https://youtu.be/xoY1IpYmNuc. The programme is under active development at the time we're publishing the presentation. We will provide regular updates. For more information about the programme please visit our website: https://escalator.sadilar.org. Follow us on Twitter: @DHCSSza (https://twitter.com/DHCSSza) Join us on Slack: https://escalator.sadilar.org/post/connect-with-the-community/ Please get in touch with the programme team if you would like to get involved or have feedback about the programme.
Inverse freezing in the Ghatak-Sherrington model with a random field
Creators: name: Morais, C. V.
name: Lazo, M. J.
name: Zimmer, F. M.
name: Magalhaes, S. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The present work studies the Ghatak-Sherrington (GS) model in the presence of a magnetic random field (RF). Previous results obtained from GS model without RF suggest that disorder and frustration are the key ingredients to produce spontaneous inverse freezing (IF). However, in this model, the effects of disorder and frustration always appear combined. In that sense, the introduction of RF allows us to study the IF under the effects of a disorder which is not a source of frustration. The problem is solved within the one step replica symmetry approximation. The results show that the first order transition between the spin glass and the paramagnetic phases, which is related to the IF for a certain range of crystal field $D$, is gradually suppressed when the RF is increased.
description: accepted in the PRE, 6 pages, 8 figures
Visual perceiving and the mind-body identity hypothesis
Creators: name: Papas, George
Publisher: name: University of Calgary
Year: 1969
Subjects: subject: BD 236 P34 1969
subject: Identity
subject: Mind and body
subject: Visual discrimination
subject: Perception

description: Bibliography: p. 93-94.
description: In this work, an attempt is made to construct an argument in support of the physicalist thesis that man might correctly be described as a very complex neurophysical organism. The argument consists of an account (i) of seeing occurrences in terms of a seer's acquiring visual information and/ or misinformation about his environment , (ii) of seeing construed as an event which initiates a certain (visual) state in the seer, and (iii) of the possibility that the occurrence of visual states may be "identified" with the occurrence of certain neurophysiological states in a seer's visual system. Attention should be drawn to the terms argument and "consists" because it is not the intention of this writer to argue that all three statements - (i) , (ii) and (iii) - are logically related. I wish to propose a theory to the effect that (i) entails (ii), and (ii) not only is compatible with : (iii) but also is conceptually related to it. As a result of the apparent independence of both ( i) and ( ii) from (iii), the former two are dealt with in Part 1 and the latter one in Part 2. Firstly, it is shown that "seeing" has a variety of uses and , therefore, it expresses a complex concept or a family of concepts . Then it is argued that while "S sees X11 entails acquires information about X", it leaves open the question as to whether the acquired information is correct or incorrect ; that "S sees that X is Y" entails S acquires correct information about X; and that S sees X as Y"~ where seeing X as Y is a case of mis-seeing X, i s analyzable in terms of 11 S acquire information or misinformation about X". Secondly, it is argued that seeing is neither a process nor a state. It is not the former, in that unlike a process, it does not take time to complete; and it is not the latter, in that unlike a state it does not last for a period of time. But although seeing is neither a state nor a process, it is the coming to be of a certain state which is a causal factor for certain items of physical behavior. Thirdly, it is argued that seeing, construed as the coming to be of a visual state, might be identified with the occurrence of certain neurophysiological states. The identification of these occurrences involves both a linguistic proposal and a novel way of grouping certain empirical facts. This identification has much in common with the theoretical identifications made as a result of experimentally tested scientific hypotheses. Finally, it is argued that certain objections which have been , or might be, raised against the hypothesis that na 0 s being in visual state X" might be identified with "his body's being in neurophysiological state Y" do not really present serious problems.
Grundlagen zur systemgerechten Planung von Schiffseinrichtungen
Creators: name: Horn, Gudrun
Publisher: name: TUHH Universitätsbibliothek
Year: 1968
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Grundlagen zur systemgerechten Planung von Schiffseinrichtungen
Torsion of elliptic curves over cubic fields
Creators: name: Najman, Filip
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Although it is not known which groups can appear as torsion groups of elliptic curves over cubic number fields, it is known which groups can appear for infinitely many non-isomorphic curves. We denote the set of these groups as $S$. In this paper we deal with three problems concerning the torsion of elliptic curves over cubic fields. First, we study the possible torsion groups of elliptic curves that appear over the field with smallest absolute value of its discriminant and having Galois group $S_3$ and over the field with smallest absolute value of its discriminant and having Galois group $\Z/3\Z$. Secondly, for all except two groups $G\in S$, we find the field $K$ with smallest absolute value of its discriminant such that there exists an elliptic curve over $K$ having $G$ as torsion. Finally, for every $G\in S$ and every cubic field $K$ we determine whether there exists infinitely many non-isomorphic elliptic curves with torsion $G$.
description: 18 pages, to appear in J. Number Theory
Development and application of a non-rejectable composite pancreatic islet allograft using indoleamine 2, 3 dioxygenase in a diabetic mouse model
Creators: name: Baradar Jalili, Reza
Publisher: name: University of British Columbia
Year: 2010

description: Success of transplantation of pancreatic islets as a promising therapeutic method for restoring efficient regulated insulin secretion in type 1 diabetes depends on lifelong use of immunosuppressive drugs. With the goal of eliminating the necessity of systemic immunosuppressive agents after islet transplantation, in this doctoral research project we hypothesized that a novel non-rejectable islet graft through employing a local immunosuppressive factor, indoleamine 2, 3 dioxygenase (IDO) can be developed and applied. IDO is a tryptophan degrading enzyme and functions as a potent immunomodulatory factor. To address this hypothesis, we engineered a three-dimensional composite islet graft equipped with IDO expressing bystander cells as local immunosuppressive system. In this composite graft, expression of IDO in syngeneic fibroblasts provided a low tryptophan microenvironment within which T-cells could not proliferate and infiltrate islets. Three specific aims were accomplished in this study. We first showed that local expression of IDO in syngeneic bystander fibroblasts efficiently suppressed in vitro proliferation of lymphocytes stimulated with allogeneic pancreatic islets. In the next phase, the impact of IDO on viability and function of mouse islets embedded within IDO-expressing fibroblast-populated collagen matrix was investigated. The result showed no reduction in islet cells viability and comparable insulin content and secretion in IDO-expressing versus control preparations. In contrast to lymphocytes, a nutrient deficiency stress-responsive pathway was not activated in islets co-cultured with IDO-expressing fibroblasts confirming the selective suppressive effect of IDO on immune versus islet cells. Furthermore, when allogeneic immune response was eliminated by using a syngeneic transplant model, IDO-expressing composite islet grafts were functional in vivo for up to 100 days. Finally, to address the last specific aim, composite allogeneic islet grafts were transplanted into renal subcapsular space of streptozotocin-induced diabetic immunocompetent mice. IDO-expressing grafts survived significantly longer than controls without using any systemic immunosuppressive agent (41.2±1.64 vs. 12.9±0.73 days, p<0.001). Local IDO expression evidently prevented lymphocyte infiltration into allografts and delayed alloantibody production. The findings presented in this thesis collectively prove the potent local immunosuppressive activity of IDO in islet allografts and set the stage for development of a long-lasting non-rejectable islet allograft using stable IDO induction in bystander fibroblasts.
title: Insights from regional and short‐term biodiversity monitoring datasets are valuable: a reply to Daskalova et al. 2021
Creators: name: Seibold, Sebastian
name: Hothorn, Torsten
name: Gossner, Martin M.
name: Simons, Nadja K.
name: Blüthgen, Nico
name: Müller, Jörg
name: Ambarlı, Didem
name: Ammer, Christian
name: Bauhus, Jürgen
name: Fischer, Markus
name: Habel, Jan C.
name: Penone, Caterina
name: Schall, Peter
name: Schulze, Ernst‐Detlef
name: Weisser, Wolfgang W.
Publisher: name: Wiley-Blackwell
Year: 2023

description: Reports of major losses in insect biodiversity have stimulated an increasing interest in temporal population changes. Existing datasets are often limited to a small number of study sites, few points in time, a narrow range of land‐use intensities and only some taxonomic groups, or they lack standardised sampling. While new monitoring programs have been initiated, they still cover rather short time periods. Daskalova et al. 2021 (Insect Conservation and Diversity, 14, 1‐18) argue that temporal trends of insect populations derived from short time series are biased towards extreme trends, while their own analysis of an assembly of shorter‐ and longer‐term time series does not support an overall insect decline. With respect to the results of Seibold et al. 2019 (Nature, 574, 671–674) based on a 10‐year multi‐site time series, they claim that the analysis suffers from not accounting for temporal pseudoreplication. Here, we explain why the criticism of missing statistical rigour in the analysis of Seibold et al. (2019) is not warranted. Models that include ‘year’ as random effect, as suggested by Daskalova et al. (2021), fail to detect non‐linear trends and assume that consecutive years are independent samples which is questionable for insect time‐series data. We agree with Daskalova et al. (2021) that the assembly and analysis of larger datasets is urgently needed, but it will take time until such datasets are available. Thus, short‐term datasets are highly valuable, should be extended and analysed continually to provide a more detailed understanding of insect population changes under the influence of global change, and to trigger immediate conservation actions.
Preparation of aluminosilicate fiber-SiBOC composite foams for thermal protection applications
Creators: name: Painuly, Anil
name: George, Benny K.
name: Prabhakaran, K.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology

description: In this study, aluminosilicate fiber-embedded SiBOC matrix composite foams are realised by a simple, cost-effective and easily scalable method. Aluminosilicate wool is transformed into a compressible preform using polyvinyl alcohol as a binder. The preforms are impregnated with methylvinylborosiloxane (MVBS), followed by heat treatment at 1400°C in an inert atmosphere. The composite foam’s density, compressive strength and thermal conductivity are modulated in the ranges 0.71–0.46 g/cc, 0.79–0.39 MPa and 0.21–0.13 Wm−1K−1, respectively, by varying MVBS concentration from 29 to 54 wt.%. While the incorporation of aluminosilicate fibers was observed to lower the thermal conductivity of the composite foams, it did not contribute to their compressive strength. Exposure of the foams to air at 1300°C for 90 min didn’t change their density, while it increased the compressive strength by up to 46% due to improved fiber-matrix adhesion and rounding of cracks.
Sensation seeking moderates the relationship between alcohol use and risk appraisal
Creators: name: Johnson, Season C.
Publisher: name: University of British Columbia
Year: 2010

description: Personality traits, such as sensation seeking and impulsivity, have been linked to substance use, as well as risk and benefit appraisal. Risk appraisal has also been inversely related to substance use, and is lower at higher levels of experience (i.e., familiarity) with the substance. This study examines the relationship between alcohol use and perceived risks and benefits, as moderated by sensation seeking, while controlling for impulsivity. Undergraduate students completed online questionnaires examining their perceptions of risks and benefits for several activities as well as their level of engagement in those activities, personality traits (sensation seeking and impulsivity), and measures of substance use. There was an inverse relationship between alcohol use (i.e., familiarity with alcohol) and risk appraisal, and this relationship was moderated by Experience Seeking. Other sensation seeking scales did not show the same relationship. Individuals lower on Experience Seeking showed a stronger inverse relationship between alcohol use and perceived risks compared to benefits. Those higher on Experience Seeking had a nonsignificant relationship between alcohol use and net risk appraisal, indicating that their perception of risks compared to benefits remained relatively constant regardless of their past use of alcohol. This relationship also extended to the use of cannabis, where those lower on Experience Seeking showed a stronger negative relationship between past cannabis use and net risk appraisal of cannabis, compared to those higher on the trait. Likewise, individuals lower on Disinhibition also showed a stronger negative relationship between past cannabis use and net risk appraisal of cannabis, compared to those higher on the trait.
XSL: The X-Shooter Spectral Library
Creators: name: Chen, Yanping
name: Trager, Scott
name: Peletier, Reynier
name: Lançon, Ariane
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We are building a new spectral library with the X-Shooter instrument on ESO's VLT: XSL, the X-Shooter Spectral Library. We present our progress in building XSL, which covers the wavelength range from the near-UV to the near-IR with a resolution of R ~ 10000. At the time of writing we have collected spectra for nearly 240 stars. An important feature of XSL is that we have already collected spectra of more than 100 Asymptotic Giant Branch stars in the Galaxy and the Magellanic Clouds.
description: 8 pages, 4 figures, to be published in the proceedings of the "GREAT-ESF Stellar Atmospheres in the Gaia Era Workshop", Brussels, Belgium, 23-24 June, 2011
Assessment of liver and renal function tests among gasoline exposed gas station workers in Mekelle city, Tigray region, Northern Ethiopia
Creators: name: Tsegay Asefaw
Publisher: name: Zenodo
Year: 2018

description: Background: Volatile organic compounds such as gasoline and other fuels are associated with a wide variety of deleterious health effects including liver and kidney diseases. Gasoline station attendants are exposed to a mixture of hydrocarbons in fuel vapors during dispensing fuel and to the gases from vehicular exhaust. Nevertheless there is no published data on the effect of volatile organic compounds, such as gasoline, on health effect in Ethiopia in general, and in Tigray area in particular.

Objective: To assess liver and renal function tests among gasoline exposed gas station workers in Mekelle city, Tigray region, Northern Ethiopia

Method: A cross sectional comparative study was conduct from January 2018 to April 2018 at Mekelle city, Tigray region, Northern Ethiopia. A total of 90 (43 gasoline exposed and 47 controls) study participants were involved in this study by convenience sampling method. Data was collected using structured questionnaire. About 3mL blood was collected on serum separator tube. Liver and renal function tests were analyzed by Pentra C400 automated clinical chemistry analyzer. Data was analyzed using SPSS Ver23. Frequency table, percent, Student independent t-test, and Analysis of variance (ANOVA) statistical methods were employed for data analysis. P-value < 0.05 was regarded as statistically significant at 95% confidence level
Graphene growth on h-BN by Molecular Beam Epitaxy
Creators: name: Garcia, Jorge M.
name: Wurstbauer, Ulrich
name: Levy, Antonio
name: Pfeiffer, Loren N.
name: Pinczuk, Aron
name: Plaut, Annette S.
name: Wang, Lei
name: Dean, Cory R.
name: Buizza, Roberto
name: Van Der Zande, Arend M.
name: Hone, James
name: Watanabe, Kenji
name: Taniguchi, Takashi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The growth of single layer graphene nanometer size domains by solid carbon source molecular beam epitaxy on hexagonal boron nitride (h-BN) flakes is demonstrated. Formation of single-layer graphene is clearly apparent in Raman spectra which display sharp optical phonon bands. Atomic-force microscope images and Raman maps reveal that the graphene grown depends on the surface morphology of the h-BN substrates. The growth is governed by the high mobility of the carbon atoms on the h-BN surface, in a manner that is consistent with van der Waals epitaxy. The successful growth of graphene layers depends on the substrate temperature, but is independent of the incident flux of carbon atoms.
description: Solid State Communications, 2012