cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
North-South asymmetry in the magnetic deflection of polar coronal hole jets
Creators: name: Nistico', Giuseppe
name: Zimbardo, Gaetano
name: Patsourakos, Spiros
name: Bothmer, Volker
name: Nakariakov, Valery M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Measurements of the magnetic field in the interplanetary medium, of the sunspots area, and of the heliospheric current sheet position, reveal a possible North-South asymmetry in the magnetic field of the Sun. We study the North-South asymmetry as inferred from measurements of the deflection of polar coronal hole jets when they propagate throughout the corona. Since the corona is an environment where the magnetic pressure is greater than the kinetic pressure, we can assume that magnetic field controls the dynamics of plasma. On average, jets during their propagation follow the magnetic field lines, highlighting its local direction. The average jet deflection is studied both in the plane perpendicular to the line of sight, and, for a reduced number of jets, in three dimensional space. The observed jet deflection is studied in terms of an axisymmetric magnetic field model comprising dipole We measured the position angles at 1 rs and at 2 rs of the 79 jets from the catalogue of Nistico et al 2009., based on the STEREO ultraviolet and white-light coronagraph observations during the solar minimum period March 2007-April 2008. We found that the propagation is not radial, in agreement with the deflection due to magnetic field lines. Moreover, the amount of the deflection is different between jets over the north and those from the south pole. Comparison of jet deflections and field line tracing shows that a ratio g2/g1 ~ -0.5 for the quadrupole and a ratio g3/g1 ~ 1.6-2.0 for the esapole can describe the field. The presence of a non-negligible quadrupole moment. We find that the magnetic deflection of jets is larger in the North than in the South of the order of 25-40%, with an asymmetry which is consistent with a southward deflection of the heliospheric current sheet of the order of 10 deg, consistent with that inferred from other, independent, datasets and instruments.
description: accepted for publication in A&A
Distance Education and Technology Infrastructure: Strategies and Opportunities
Creators: name: Moore, Robert L.
name: Fodrey, Brian
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Distance education provides a wealth of opportunities and areas for innovation,
but it also presents unique challenges for implementation and eventual success.
To mitigate these challenges, this chapter will present four critical
components—systems, objectives, evaluation, and personnel—that combine into
one to create a technology infrastructure that can support distance delivery. Through
this chapter, e-learning leaders will gain the knowledge to not only identify key
features of tools used for distance delivery, but also understand and appreciate the
correlation between a holistic infrastructure approach and quality distance delivery.
The absence of one of these critical components will likely result in an unsuccessful
technology integration. To aid in the explanation of these critical components, the
chapter will focus on three main distance education delivery forms—webinars,
classroom captures, and e-learning modules. The chapter will provide an overview
of the types of questions and elements that should go into consideration of any distance
education tool, and will aid in the effective assessment and evaluation of these
tools, as well as personnel considerations that should be taken into account.
On the flow of non-axisymmetric perturbations of cylinders via surface diffusion
Creators: name: LeCrone, Jeremy
name: Simonett, Gieri
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the surface diffusion flow acting on a class of general (non--axisymmetric) perturbations of cylinders $\mathcal{C}_r$ in ${\rm I \! R}^3$. Using tools from parabolic theory on uniformly regular manifolds, and maximal regularity, we establish existence and uniqueness of solutions to surface diffusion flow starting from (spatially--unbounded) surfaces defined over $\mathcal{C}_r$ via scalar height functions which are uniformly bounded away from the central cylindrical axis. Additionally, we show that $\mathcal{C}_r$ is normally stable with respect to $2 π$--axially--periodic perturbations if the radius $r > 1$,and unstable if $0 < r < 1$. Stability is also shown to hold in settings with axial Neumann boundary conditions.
description: 20 pages, 1 figure, submitted for publication
Das Forschungsinformationssystem der Universität Bielefeld
Creators: name: Biegler-König, Charlotte
name: Schirrwagen, Jochen
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2023

description: Im Rahmen der Landesinitiative CRIS.NRW hat die Universität Bielefeld nach einer umfangreichen Implementierungsphase ein Forschungsinformationssystem und -portal eingeführt. Dieses wird in diesem Jahr 2023 in den Regelbetrieb übergehen und den Forschenden an der Universität zur aktiven Nutzung bereitgestellt. Der Vortrag skizziert die Bedeutung von Forschungsinformation und legt die Gründe für ein institutionelles Forschungsinformationssystem dar. Mit besonderem Fokus auf das Publikationsmanagement werden die verschiedenen Funktionen des Systems demonstriert.
description: Kolloquium Wissensinfrastruktur, Wintersemester 2022/23
B!SON - algorithmenbasiertes Empfehlungssystem für Open-Access-Zeitschriften
Creators: name: Eppelin, Anita
name: Entrup, Elias
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2022

description: Um Forschende bei der Identifizierung geeigneter Open-Access-Zeitschriften für ihre Forschungsergebnisse zu unterstützen, haben TIB und SLUB Dresden im Rahmen der BMBF-geförderten Richtlinie "Beschleunigung der Transformation zu Open Access" und in Zusammenarbeit mit vielen Partnereinrichtungen B!SON als offenen und unabhängigen Dienst entwickelt. Ausgehend von einem zu veröffentlichenden Manuskript kommen semantische und bibliometrische Verfahren zum Einsatz, um inhaltlich passende und qualitätsgesicherte Open-Access-Zeitschriften vorzuschlagen. Im Gegensatz zu ähnlichen Angeboten setzt B!SON dabei auf eine offene und nachhaltige Infrastruktur: Der Dienst bezieht die für die Ähnlichkeitsbestimmung benötigten Metadaten von den Partnern DOAJ und OpenCitations; der Quellcode ist unter einer freien Lizenz veröffentlicht. In unserem Kolloquiumsvortrag stellen wir den B!SON Journal Recommender als zentrales Projektergebnis vor und geben Einblicke in die zum Einsatz kommenden technischen Verfahren sowie einen Ausblick auf weitere Planungen im Umfeld des Projekts.
description: Kolloquium Wissensinfrastruktur, Wintersemester 2022/23
Reaction-diffusion equation for quark-hadron transition in heavy-ion collisions
Creators: name: Bagchi, Partha
name: Das, Arpan
name: Sengupta, Srikumar
name: Srivastava, Ajit M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Reaction-diffusion equations with suitable boundary conditions have special propagating solutions which very closely resemble the moving interfaces in a first order transition. We show that the dynamics of chiral order parameter for chiral symmetry breaking transition in heavy-ion collisions, with dissipative dynamics, is governed by one such equation, specifically, the Newell-Whitehead equation. Further, required boundary conditions are automatically satisfied due to the geometry of the collision. The chiral transition is, therefore, completed by a propagating interface, exactly as for a first order transition, even though the transition actually is a crossover for relativistic heavy-ion collisions. Same thing also happens when we consider the initial confinement-deconfinement transition with Polyakov loop order parameter. The resulting equation, again with dissipative dynamics, can then be identified with the reaction-diffusion equation known as the Fitzhugh-Nagumo equation which is used in population genetics. We discuss the implications of these results for heavy-ion collisions. We also discuss possible extensions for the case of early universe.
description: 7 pages, 3 figures
ACC/AHA guidelines for the management of patients with ST-elevation myocardial infarction - Executive summary: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the 1999 Guidelines for the Management of Patients With Acute Myocardial Infarction)
Creators: name: Smith, Sidney C., Jr.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Although considerable improvement has occurred in the process of care for patients with ST-elevation myocardial infarction (STEMI), room for improvement exists.1–3 The purpose of the present guideline is to focus on the numerous advances in the diagnosis and management of patients with STEMI since 1999. This is reflected in the changed name of the guideline: “ACC/AHA Guidelines for the Management of Patients With ST-Elevation Myocardial Infarction.” The final recommendations for indications for a diagnostic procedure, a particular therapy, or an intervention in patients with STEMI summarize both clinical evidence and expert opinion (Table 1). To provide clinicians with a set of recommendations that can easily be translated into the practice of caring for patients with STEMI, this guideline is organized around the chronology of the interface between the patient and the clinician. The full guideline is available at http://www.acc.org/clinical/guidelines/stemi/index.htm.
Digitalisierungsstrategie an der Universität Bielefeld: Was bedeutet das für die Bibliothek?
Creators: name: Plasa, Agnes
name: Knorn, Barbara
name: Pieper, Dirk
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2022

description: Die Hochschulleitung hat in diesem Jahr eine Digitalisierungsstrategie für die Universität Bielefeld veröffentlicht, die für die nächsten Jahre Visionen, strategische Ziele und Handlungsfelder beschreibt. „Studium und Lehre“, „Forschung und Transfer“, „Unterstützungsprozesse“ sowie „Wissenschaftliche Informationsinfrastruktur und IT-Services“ fokussieren sich auf strategisch abgestimmte Initiativen, die auch der Hochschulvereinbarung NRW 2026 Rechnung tragen. Wie wirkt sich die Digitalsierungsstrategie auf die lokale Bibliotheksstrategie UB 2025 aus? Welche Schwerpunkte sollen gesetzt werden? Diese Fragen werden in der Veranstaltung "Dialog mit der Direktion" / "Kolloquium" beantwortet.
description: Kolloquium Wissensinfrastruktur, Wintersemester 2022/23
Creare Open Educational Resources: scegliere la licenza e condividere le proprie OER
Creators: name: Corti, Paola
name: Nervo, Anna
Publisher: name: Zenodo
Year: 2023
Subjects: Open Education
OER
Open Educational Resources
Open Educational Practices
Innovazione didattica

description: METID – Learning Innovation, Task Force del Politecnico di Milano, in collaborazione con la Rete Open Education Italia, con il supporto del Creative Commons Chapter Italiano e il patrocinio di Wikimedia Italia, ha proposto una serie di 4 webinar gratuiti sul tema “Open Education per innovare la didattica”. In questa pagina sono disponibili le slide presentate durante il terzo incontro dal titolo Creare Open Educational Resources: scegliere la licenza e condividere le proprie OER. La registrazione dell'evento è disponibile sul canale YouTube di Polimi Open Knowledge nella playlist dedicata alla serie: https://tinyurl.com/OpenEdPOK
Facilitators and Challenges in Providing Pain Management to the Pediatric Population in Rural Northern Ontario
Creators: name: Marshall, Carolyn
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2018
Subjects: pediatric
pain
rural
Northern Ontario
context
across-methods

description: Background: Children continue to experience pain in hospital. Few studies examine pediatric pain management in the rural context. Objectives: 1) To explore nurses’ experiences providing pain care to pediatric inpatients in Northern Ontario. 2) To identify institutional resources to support nurses’ pain care practices. Method: Across methods approach. Study I used qualitative description completed with 10 nurses using semi-structured interviews. Data were analyzed using inductive content analysis. Study II was an exploratory descriptive online survey using a study-specific questionnaire that was completed by 8 hospital administrators. Data were analyzed using descriptive statistics and narrative synthesis was used for open-ended questions. Findings: Pediatric pain management presents challenges in Northern Ontario, including competing priorities, gaps in pain knowledge, unclear policies, and resource constraints. Potential facilitators include nurses’ motivation to improve pain management, leveraging local resources, and an increase in context specific standards. Conclusion: Context specific strategies need to be designed and implemented to support nurses’ practices in delivering recommended pediatric pain management to their patients.
Hydrogen Bond Symmetrization in Glycinium Oxalate under Pressure
Creators: name: Bhatt, Himal
name: Murli, Chitra
name: Mishra, A. K.
name: Verma, Ashok K.
name: Garg, Nandini
name: Deo, M. N.
name: Chitra, R.
name: Sharma, Surinder M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report here the evidences of hydrogen bond symmetrization in the simplest amino acid- carboxylic acid complex, glycinium oxalate, at moderate pressures of 8 GPa using in-situ infrared and Raman spectroscopic investigations combined with first-principles simulations. The protonation of the semioxalate units through dynamic proton movement results in infinite oxalate chains. At pressures above 12 GPa, the glycine units systematically reorient with pressure to form hydrogen bonded supramolecular assemblies held together by these chains.
The Transitional Disk around IRAS 04125+2902
Creators: name: Espaillat, C.
name: Andrews, S.
name: Powell, D.
name: Feldman, D.
name: Qi, C.
name: Wilner, D.
name: D'Alessio, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Resolved submillimeter imaging of transitional disks is increasingly revealing the complexity of disk structure. Here we present the first high-resolution submillimeter image of a recently identified transitional disk around IRAS 04125+2902 in the Taurus star-forming region. We measure an inner disk hole of ~20 AU around IRAS 04125+2902 by simultaneously modeling new 880 micron Submillimeter Array (SMA) data along with an existing spectral energy distribution supplemented by new Discovery Channel Telescope (DCT) photometry. We also constrain the outer radius of the dust disk in IRAS~04125+2902 to ~50-60 AU. Such a small dust disk could be attributed to initial formation conditions, outward truncation by an unseen companion, or dust evolution in the disk. Notably, the dust distribution of IRAS 04125+2902 resembles a narrow ring (delta R ~ 35 AU) composed of large dust grains at the location of the disk wall. Such narrow dust rings are also seen in other transitional disks and may be evidence of dust trapping in pressure bumps, possibly produced by planetary companions. More sensitive submillimeter observations of the gas are necessary to further probe the physical mechanisms at work in shaping the spatial distribution of large dust in this disk. Interestingly, the IRAS 04125+2902 disk is significantly fainter than other transitional disks that have been resolved at submillimeter wavelengths, hinting that more objects with large disk holes may exist at the faint end of the submillimeter luminosity distribution that await detection with more sensitive imaging telescopes.
description: accepted to ApJ
The stellar wind velocity field of HD 77581
Creators: name: Manousakis, A.
name: Walter, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The early acceleration of stellar winds in massive stars is poorly constrained. The scattering of hard X-ray photons emitted by the pulsar in the high-mass X-ray binary Vela X-1 can be used to probe the stellar wind velocity and density profile close to the surface of its supergiant companion HD 77581. We built a high signal-to-noise and high resolution hard X-ray lightcurve of Vela X-1 measured by Swift/BAT over 300 orbital periods of the system and compared it with the predictions of a grid of hydrodynamic simulations. We obtain a very good agreement between observations and simulations for a narrow set of parameters, implying that the wind velocity close to the stellar surface is twice larger than usually assumed with the standard beta law. Locally a velocity gradient of $β\sim0.5$ is favoured. Even if still incomplete, hydrodynamic simulations are successfully reproducing several observational properties of Vela X-1.
description: submitted to A&A, comments are welcome
Verbundprojekt "AuROA - Autor:innen und Rechtssicherheit für Open Access"
Creators: name: Pendorf, Gabriele
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2022

description: Anfang kommenden Jahres läuft das Verbundprojekt AuROA ("Autor:innen und Rechtssicherheit für Open Access") aus, in dem ermittelt wurde, welche rechtlichen Rahmenbedingungen für geistes- und sozialwissenschaftliche Publizierende notwendig sind, um stärker noch Open Access zu veröffentlichen. Als Problem wurde erkannt, dass die traditionellen Verlagsstrukturen und ihre Einflüsse auf die Wissenschaftslandschaft den Publikationsmarkt und die freie Vergügbarkeit von Werken zwar bestimmen, aber aus unterschiedlichen Gründen nicht in OA-Publikationsprozesse passen. Ergebnis dieser zwei Jahre dauernden Untersuchungszeit ist ein Vertragsgenerator, mithilfe dessen sich Autor:innen verlagsunabhängig Musterverträge erstellen können. Über diese individuelle Nutzung hinaus werden Musterverträge für Open-Access-Publikationen entwickelt, die "für mehr Kooperation und Standardisierung bei Open-Access-Buchpublikationen" sorgen, so dass eine faire Zusammenarbeit mit Verlagen möglich wird. In dem Kurzvortrag skizziere ich die zentralen Ideen und Maßnahmen des Projektes nach.
description: Kolloquium Wissensinfrastruktur, Wintersemester 2022/23
Anisotropy of the acoustooptic figure of merit for LiNbO3 crystals. Isotropic diffraction
Creators: name: Mys, Oksana
name: Kostyrko, Myroslav
name: Krupych, Oleh
name: Vlokh, Rostyslav
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have developed the approach for analyzing of anisotropy of acoustooptic figure of merit (AOFM) for lithium niobate crystals in the case of isotropic acoustooptic (AO) diffraction. The working relations for the effective elastooptic coefficients and the AOFM have been derived. We have found that, under the conditions of isotropic AO diffraction, the maximum AOFM value for LiNbO3 is equal tp 11.62x10-15s3/kg. It is peculiar for the geometry of AO interaction of the shear acoustic wave propagating in the YZ plane (the velocity 3994 m/s) with the optical wave polarized in the same plane. We have demonstrated that the maximum AOFM values are achieved mainly due to essential anisotropy and high values of the elastooptic coefficients of LiNbO3.
description: 21 pages, 3 figures
Faculty developers as allies (not experts) in supporting Indigenous perspectives
Creators: name: Bortolin, Kathleen
Publisher: name: Vancouver Island University - Royal Roads University
Year: 2018
Subjects: subject: Universities and colleges--Canada
subject: Professional learning communities
subject: Reconciliation

description: Situated in teaching and learning centres, faculty developers are well-positioned to be allies in the face of faculty uncertainty. Here and now, teaching and learning centres are being called to go beyond drawing rubrics and flipping lectures. We now have faculty asking us questions like, “How do I incorporate an Indigenous perspective into my computer studies course?” and “How do I bring Indigenous content into my Geology program?” How should we respond?
description: This article was originally published as: Bortolin, K. (2018). Faculty developers as allies (not experts) in supporting Indigenous perspectives. University Affairs. Retrieved from: https://www.universityaffairs.ca/opinion/in-my-opinion/faculty-developers-allies-not-experts-supporting-indigenous-perspectives/
description: https://viurrspace.ca/bitstream/handle/10613/5522/Bortolin.UA.pdf?sequence=3
Non-uniform horizons in Gauge/Gravity Duality
Creators: name: Moskalets, T. M.
name: Nurmagambetov, A. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this communication, based on our paper http://arxiv.org/abs/1409.4186, we discuss a way of enhancing Gauge/Gravity Duality and response of a dual strongly coupled medium on placing the inhomogeneity on the gravity side.
description: 6 pages, REVTex. Based on TMM's talk at 43rd ITEP Winter School
Promoting a comprehensive view of library resources in a course management system
Creators: name: Hampton, Ellen
name: Solis, Jacqueline
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Abstract:
Purpose:
The purpose of this paper is to demonstrate the way the University of North Carolina Libraries have begun to incorporate library resources into their university course management system.
Design/methodology/approach:
Presents a case study of course-specific web pages that have been incorporated into BlackBoard sites as a way to facilitate the use of the library and to promote a comprehensive view of library services and resources at the University of North Carolina at Chapel Hill.
Findings:
Students and professors appreciate course-specific web pages that provide access to library resources that relate directly to class assignments. Web page usage statistics show that students are using librarian-created course pages to access library materials.
Originality/value:
This paper describes a way for librarians to bring library resources into a course management system that may be beneficial for other academic libraries.
Formation of accretion centers in simulations of colliding uniform density H$_2$ cores
Creators: name: Arreaga-Garcia, G.
name: Klapp, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We test here the first stage of a route of modifications to be applied to the public GADGET2 code for dynamically identifying accretion centers during the collision process of two adjacent and identical gas cores. Each colliding core has a uniform density profile and rigid body rotation; its mass and size have been chosen to represent the observed core $L1544$; for the thermal and rotational energy ratios with respect to the potential energy, we assume the values $α=0.3$ and $β=0.1$, respectively. These values favor the gravitational collapse of the core. We here study cases of both -head-on and off-center collisions, in which the pre-collision velocity increases the initial sound speed of the barotropic gas by up to several times. In a simulation the accretion centers are formed by the highest density particles, so we here report their location and properties in order to realize the collision effects on the collapsing and colliding cores. In one of the models we observe a roughly spherical distribution of accretion centers located at the front wave of the collision. In a forthcoming publication we will apply the full modified GADGET code to study the collision of turbulent cores.
description: accepted for publication in the journal Astronomische Nachrichten
Ein Vergleich von Modellen der explorativen Faktorenanalyse
Creators: name: Hanke, Raphael Wilhelm
Publisher: name: Humboldt-Universität zu Berlin
Year: 2018
Subjects: subject: Faktorenmodell
subject: Vergleich
subject: bfi
subject: Shiny
subject: R
subject: Rotation
subject: Extraktion
subject: Einfachstruktur
subject: orthogonal
subject: oblique
subject: multivariate Statistik
subject: explorative Faktorenanalyse
subject: Modellaufbau
subject: factor model
subject: comparison
subject: extraction
subject: simple structure
subject: multivariate statistics
subject: exploratory factor analysis
subject: rotation
subject: model construction
subject: 519 Wahrscheinlichkeiten, angewandte Mathematik

description: In der Faktorenanalyse beinflusst der Wissenschaftler den Modellaufbau. Er bestimmt die Kommunalitätenschätzung, die Anzahl der Faktoren, die Extraktions- und die Rotationsme- thode sowie die Interpretation. Um die Konsequenzen der Entscheidungen zu messen, wur- de begleitend zur Arbeit eine interaktive Applikation zum Modellvergleich entwickelt. An- hand von Persönlichkeitmerkmalen wird in verschiedenen Faktorenmodellen die Relevanz der Modellkonstruktion demonstriert und Relationen zwischen Modellstruktur und Ergebnissen werden nachgewiesen. Obwohl alle verglichenen Modelle in Faktoren resultieren, die die glei- chen Variablen beinhalten, lassen sich Unterschiede in der Achsenlage, in der Einfachheit der Ladungsstruktur und in der Interpretation einzelner Faktoren aufdecken. Abhängigkeiten zwischen präferiertem Modell und untersuchtem Datensatz werden erkenntlich.
description: In factor analysis the scientist influences model construction. He determines estimation of communalities, the number of factors, extraction- and rotation-method as well as the inter- pretation. In order to compare factor models and to indentify the impact of decisions an interactive application is developed. A comparison of several models using data of personality items confirms the importance of model construction, even though all models result in fac- tors that relate to the same variables. Small differences in axis location, simplicity of loading structure and interpretation of factors can be detected. Furthermore a dependency between preferred model construction and the examined data is unveiled.
Narrative anticipation in autism
Creators: name: Richardson, Hilary
name: Zimmer, Lucie
name: Schuwerk, Tobias
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Clinical Psychology
subject: Cognitive Neuroscience
subject: Life Sciences
subject: Arts and Humanities
subject: Neuroscience and Neurobiology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: autism
subject: fMRI
subject: narrative anticipation
subject: predictive responses

description: Richardson & Saxe (2019) describes a cross-sectional fMRI study of neurotypical children ages 3-7 years old. Children viewed Disney Pixar’s “Partly Cloudy”, twice, while undergoing fMRI. Richardson & Saxe report developmental change in a “narrative anticipation” effect in social brain regions (bilateral temporoparietal junction, precuneus, medial prefrontal cortex). In particular, these regions were recruited earlier in time during the second presentation of the movie with age. There was no such effect in a control network of brain regions (the “Pain Matrix”). Here, we use the exact same fMRI stimuli and analysis procedures to extend this research to neurotypical and autistic adults. Our primary hypotheses are (1) that the narrative anticipation effect will be present in social brain regions of neurotypical adults; and (2) that the narrative anticipation effect will be attenuated in social brain regions of autistic adults (cf., Pellicano and Burr, 2012).
Service quality, profitability, and the economic worth of customers: What we know and what we need to learn
Creators: name: Zeithaml, Valarie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: In the past, expenditures on quality have not been explicitly linked to profits because costs and savings were the only variables on which information was available. More recently, evidence about the profit consequences of service quality stemming from other sources has been found. This article synthesizes recent evidence and identifies relationships between service quality and profits that have been and need to be examined. The article views the literature in six categories: (1) direct effects of service quality on profits; (2) offensive effects; (3) defensive effects; (4) the link between perceived service quality and purchase intentions; (5) customer and segment profitability; and (6) key service drivers of service quality, customer retention, and profitability. In each category, the author identifies what is known and then suggests an agenda of relationships needing validation and questions needing answers. The article is organized around a conceptual framework linking the six topics.
Scale-invariant perturbations in ekpyrotic cosmologies without fine-tuning of initial conditions
Creators: name: Levy, Aaron M.
name: Ijjas, Anna
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ekpyrotic bouncing cosmologies have been proposed as alternatives to inflation. In these scenarios, the universe is smoothed and flattened during a period of slow contraction preceding the bounce while quantum fluctuations generate nearly scale-invariant super-horizon perturbations that seed structure in the post-bounce universe. An analysis by Tolley and Wesley (2007) showed that, for a wide range of ekpyrotic models, generating a scale-invariant spectrum of adiabatic or entropic fluctuations is only possible if the cosmological background is unstable, in which case the scenario is highly sensitive to initial conditions. In this paper, we analyze an important counterexample: a simple action that generates a Gaussian, scale-invariant spectrum of entropic perturbations during ekpyrotic contraction without requiring fine-tuned initial conditions. Based on this example, we discuss some generalizations.
description: 10 pages, 3 figures
title: Die deutsche Fortschrittspartei : [Programm der Deutschen Fortschrittspartei von 1861, Wahlaufruf zur Reichstagswahl 1877, Die Fraktionen der Deutschen Fortschrittspartei im Deutschen Reichstag und im Preußischen Abgeordnetenhaus]
Creators: name: Philipps-Universität Marburg
Publisher: name: Philipps-Universität Marburg
Year: 1877
Subjects: subject: Deutsche Fortschrittspartei
subject: Reichstagswahl
subject: Flugschrift
subject: Political science
subject: FOS: Political science
subject: Politik

description: Layoutgetreues Digitalisat der Ausg.: Berlin : Troitzsch & Ostertag, [ca. 1876] Standort: Institut für Politikwissenschaft (362) Signatur: RB 379 d 3, 2 Bemerkungen: Gesamttitel fingiert
Granular chains with soft boundaries: Slowing the transition to quasi-equilibrium
Creators: name: Przedborski, Michelle
name: Harroun, Thad A.
name: Sen, Surajit
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present here a detailed numerical study of the dynamical behaviour of `soft' uncompressed grains in a granular chain where the grains interact via the intrinsically nonlinear Hertz force. It is well known that such a chain supports the formation of solitary waves (SWs). Here, however, the system response to the material properties of the grains and boundaries is further explored. In particular, we examine the details of the transition of the system from a SW phase to an equilibrium-like (or quasi-equilibrium) phase and for this reason we ignore the effects of dissipation in this study. We find that the soft walls slow the reflection of SWs at the boundaries of the system, which in turn slows the journey to quasi-equilibrium. Moreover, the increased grain-wall compression as the boundaries are softened results in fewer average grain-grain contacts at any given time in the quasi-equilibrium phase. These effects lead to increased kinetic energy fluctuations in the short term in softer systems. We conclude with a toy model which exploits the results of soft-wall systems. This toy model supports the formation of breather-like entities and may therefore be useful for localizing energy in desired places in the granular chain.
Scale Invariant Density Perturbations from Cyclic Cosmology
Creators: name: Frampton, Paul Howard
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown how quantum fluctuations of the radiation during the contraction era of a CBE (Comes Back Empty) cyclic cosmology can provide density fluctuations which re-enter the horizon during the subsequent expansion era and at lowest order are scale invariant, in a Harrison-Zel'dovich-Peebles sense, as necessary to be consistent with observations of large scale structure.
description: 11 pages, LaTeX
Controllable Asymmetric Matter-wave Beam Splitter and Ring Potential on an Atom Chip
Creators: name: Kim, S. J.
name: Yu, H.
name: Gang, S. T.
name: Anderson, D.
name: Kim, J. B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have constructed an asymmetric matter-wave beam splitter and a ring potential on an atom chip with Bose-Einstein condensates using radio-frequency dressing. By applying rf-field parallel to the quantization axis in the vicinity of the static trap minima added to perpendicular rf-fields, versatile controllability on the potentials is realized. Asymmetry of the rf-induced double well is manipulated without discernible displacement of the each well along horizontal and vertical direction. Formation of an isotropic ring potential on an atom chip is achieved by compensating the gradient due to gravity and inhomogeneous coupling strength. In addition, position and rotation velocity of a BEC along the ring geometry are controlled by the relative phase and the frequency difference between the rf-fields, respectively.
description: 6 pages, 4 figures
Microcochlis Yoo 1994, n.gen.
Creators: name: Yoo, E. K.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Microcochlis

description: Microcochlis n.gen. Type species. Microcochlis parva n.sp. Definition. Minute, turbiniform with shallow sutures, somewhat flat whorl profile, and narrow umbilicus; ornament of rather widely spaced prosocline collabral cords with weak spiral cords. Geological age. Late Tournaisian. Remarks. Microcochlis n.gen. differs from Eucochlis Knight and Kyndalynia n.gen. in having a flat whorl profile and coarser collabral cords modified with weaker spiral cords. It has a narrow umbilicus as seen in some species of Eucochlis, but differs from Kyndalynia in that the latter has a round whorl profile and a wide umbilicus. Australian Carboniferous species. Microcochlis parva n.sp.
description: Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 88, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/4654599
Automorphism group of a Bott-Samelson-Demazure-Hansen variety
Creators: name: Chary, B. Narasimha
name: Kannan, S. Senthamarai
name: Parameswaran, A. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let $G$ be a simple, adjoint, algebraic group over the field of complex numbers, $B$ be a Borel subgroup of $G$ containing a maximal torus $T$ of $G$, $w$ be an element of the Weyl group $W$ and $X(w)$ be the Schubert variety in $G/B$ corresponding to $w$. Let $Z(w,\underline i)$ be the Bott-Samelson-Demazure-Hansen variety (the desingularization of the Schubert variety $X(w)$) corresponding to a reduced expression $\underline i$ of $w$. In this article, we compute the connected component $Aut^0(Z(w, \underline i))$ of the automorphism group of $Z(w,\underline i)$ containing the identity automorphism. We show that $Aut^0(Z(w, \underline i))$ contains a closed subgroup isomorphic to $B$ if and only if $w^{-1}(α_0)<0$, where $α_0$ is the highest root. If $w_0$ denotes the longest element of $W$, then we prove that $Aut^0(Z(w_0, \underline i))$ is a parabolic subgroup of $G$. It is also shown that this parabolic subgroup depends very much on the chosen reduced expression $\underline i$ of $w_0$ and we describe all parabolic subgroups of $G$ that occur as $Aut^0(Z(w_0, \underline i))$. If $G$ is simply laced, then we show that for every $w\in W$ and for every reduced expression $\underline i$ of $w$, $ Aut^0(Z(w, \underline i))$ is a quotient of the parabolic subgroup $Aut^0(Z(w_0, \underline j))$ of $G$ for a suitable choice of a reduced expression $\underline j$ of $w_0$. We also prove that the Bott-Samelson-Demazure-Hansen varieties are rigid for simply laced groups and their deformations are unobstructed in general.
description: 34 pages, to appear in Transformation Groups
Nonlinear Resonances and Antiresonances of a Forced Sonic Vacuum
Creators: name: Pozharskiy, D.
name: Zhang, Y.
name: Williams, M. O.
name: McFarland, D. M.
name: Kevrekidis, P. G.
name: Vakakis, A. F.
name: Kevrekidis, I. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider a harmonically driven acoustic medium in the form of a (finite length) highly nonlinear granular crystal with an amplitude and frequency dependent boundary drive. Remarkably, despite the absence of a linear spectrum in the system, we identify resonant periodic propagation whereby the crystal responds at integer multiples of the drive period, and observe that they can lead to local maxima of transmitted force at its fixed boundary. In addition, we identify and discuss minima of the transmitted force ("antiresonances") in between these resonances. Representative one-parameter complex bifurcation diagrams involve period doublings, Neimark-Sacker bifurcations as well as multiple isolas (e.g. of period-3, -4 or -5 solutions entrained by the forcing). We combine them in a more detailed, two-parameter bifurcation diagram describing the stability of such responses to both frequency and amplitude variations of the drive. This picture supports an unprecedented example of a notion of a (purely) "nonlinear spectrum" in a system which allows no sound wave propagation (due to zero sound speed: the so-called sonic vacuum). We rationalize this behavior in terms of purely nonlinear building blocks: apparent traveling and standing nonlinear waves.
PTB-Digitalisierungsstrategie
Creators: name: Eichstädt, Sascha
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2018
Subjects: Digitalisierung
Metrologie
Qualitätsinfrastruktur
gesetzliches Messwesen
Kalibrierung
Maschinelles Lernen
Big Data
Datenqualität
5G
Kommunikationssysteme
Virtuelle Messung
Simulationen
Virtuelle Messgeräte
Strategie
Digitalisierungsstrategie
Landeseichbehörden

description: PTB-Mitteilungen. Band 127 (2017), Heft 4, Seite 10 bis 38. ISSN 0030-834X
Integrin signaling to the actin cytoskeleton
Creators: name: Wennerberg, Krister
name: DeMali, Kris A.
name: Burridge, Keith
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: Integrin engagement stimulates the activity of numerous signaling molecules, including the Rho family of GTPases, tyrosine phosphatases, cAMP-dependent protein kinase and protein kinase C, and stimulates production of PtdIns(4,5)P2. Integrins promote actin assembly via the recruitment of molecules that directly activate the actin polymerization machinery or physically link it to sites of cell adhesion.
PTB Digitalization Strategy
Creators: name: Eichstädt, Sascha
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2018
Subjects: Digitalization
Metrology
Quality infrastructure
legal metrology
calibration
machine learning
big data
data quality
5G
communication systems
virtual measurements
simulation
virtual measuring instrument
strategy
digitalization strategy
market surveillance

description: PTB-Mitteilungen. Volume 127 (2017), Issue 4, Page 40 to 67. ISSN 0030-834X
title: Continuum structure of few-body systems
Creators: name: Dietz, Sebastian
Publisher: name: UNSPECIFIED
Year: 2023

description: The focus of this work is on the study of states on the unphysical sheets of the complex energy plane for few-particle systems using potentials derived from leading order pionless effective field theory. The aim is to obtain a statement about the continuum structure of the three-neutron system. For this purpose, various methods are applied. These allow the computation of observables on both, the physical and unphysical sheets. This group of methods is complemented by calculations in finite volume. On the basis of different two-particle test systems, methods for the calculation of the phase shifts and time delays, the analytical continuation in the coupling constant (ACCC) and the analytical continuation of the Lippmann-Schwinger equation to the unphysical sheet are compared with each other by the difficulty and possibilities of their application and the quality of their results. In the following, different three-particle system are considered. First, the method of analytical continuation is applied to a system of three spinless bosons. This offers the possibility to investigate resonances as well as virtual states on both unphysical sheets connected to the physical one. Furthermore, three-particle systems containing spin are considered. First, the phase shift anomaly of the neutron-deuteron system is investigated. Subsequently the three-neutron system is considered. For this purpose, first the phase shifts on the physical sheet are extracted by extrapolation from a bound to the physical dineutron. In the following, the pole structure of the three-neutron system on the unphysical sheet is investigated by analytical continuation. In both cases, no sign of a resonance or a virtual state is found. This result is supported by the calculation of the point production amplitude and its comparison with the predictions of the nonrelativistic conformal field theory. The point production amplitude is further derived for a four-neutron system as well as for the system of the three spinless bosons. The system of the three bosons serves here as a benchmark for the existence of a resonance. Finally, using the Lüscher formalism, the spectra of the dineutron-neutron as well as the dineutrondineutron scattering for unphysically bound dineutrons in finite volume are calculated. In both cases, it is shown that even for an unphysically increased interaction strength neither three- nor four-neutron resonances occur. In summary, this work shows using different methods, that the three-neutron system neither presents resonances nor virtual states. Furthermore, the non-existence of resonances in the four-neutron system is motivated by two methods.
title: An Experimental Test of the Global-Game Selection in Coordination Games with Asymmetric Players
Creators: name: Heinemann, Frank
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2022

description: In symmetric binary-choice coordination games, the global-game selection (GGS) has been proven to predict a high proportion of observed choices correctly. In these games, the GGS is identical to the best response to Laplacian beliefs about the fraction of players choosing either action. This paper presents an experiment on asymmetric games in which the GGS differs from the best response to Laplacian beliefs. It shows that the best response to Laplacian beliefs is a better predictor of behavior in these games than the GGS. In the considered games, the GGS provides poor guidance and also fails to give the right qualitative comparative statics predictions. Simple cognitive hierarchy models yield better predictions. The best response to a Laplacian belief about the distribution of other players' actions yields the best prediction. Comparing maximum likelihood estimates for four probabilistic models shows that an estimated global-game equilibrium fits worse than a rather simple level-k or Laplacian-belief model combined with a standard error-response function.
On the Late-Time Behaviour of a Bounded, Inviscid Two-Dimensional Flow
Creators: name: Dritschel, David G.
name: Qi, Wanming
name: Marston, J. B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Using complementary numerical approaches at high resolution, we study the late-time behaviour of an inviscid, incompressible two-dimensional flow on the surface of a sphere. Starting from a random initial vorticity field comprised of a small set of intermediate wavenumber spherical harmonics, we find that -- contrary to the predictions of equilibrium statistical mechanics -- the flow does not evolve into a large-scale steady state. Instead, significant unsteadiness persists, characterised by a population of persistent small-scale vortices interacting with a large-scale oscillating quadrupolar vorticity field. Moreover, the vorticity develops a stepped, staircase distribution, consisting of nearly homogeneous regions separated by sharp gradients. The persistence of unsteadiness is explained by a simple point vortex model characterising the interactions between the four main vortices which emerge.
description: 21 pages, 14 figures, submitted to JFM