cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dark Matter Detection with Hard X-ray Telescopes
Creators: name: Jeltema, Tesla E.
name: Profumo, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the impact of future hard X-ray observations on the search for indirect signatures of particle dark matter in large extragalactic systems such as nearby clusters or groups of galaxies. We argue that the hard X-ray energy band falls squarely at the peak of the inverse Compton emission from electrons and positrons produced by dark matter annihilation or decay for a large class of dark matter models. Specifically, the most promising are low-mass models with a hard electron-positron annihilation final state spectrum and intermediate-mass models with a soft electron-positron spectrum. We find that constraints on dark matter models similar to the current constraints from the Fermi Gamma-Ray Space Telescope will be close to the sensitivity limit of the near-term hard X-ray telescopes NuSTAR and ASTRO-H for relatively long observations. An instrument like the Wide Field Imager (WFI) proposed for ATHENA would instead give a significant gain in sensitivity to dark matter if placed in a low background orbit similar to NuSTAR's; however, given the higher expected background level for ATHENA's proposed orbit at L2, its sensitivity will be similar to that of NuSTAR.
description: 18 pages, 3 figures, accepted to MNRAS, updated with predictions for ATHENA and some additional discussion of systematics
Instrumentos de gestión editorial: reglamento (estatuto)
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los instrumentos básicos de gestión para proyectos editoriales de publicaciones periódicas. Se muestra los principales aspectos de la elaboración del reglamento del equipo editorial de una revista científica. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
title: Marktkonzentrationstrend steigt in Dienstleistungsmärkten deutlich
Creators: name: Affeldt, Pauline
name: Duso, Tomaso
name: Gugler, Klaus
name: Piechucka, Joanna
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: L19 Market Structure, Firm Strategy, and Market Performance: Other
subject: L24 Contracting Out; Joint Ventures; Technology Licensing
subject: L40 Antitrust Issues and Policies: General
subject: K21 Antitrust Law
subject: Concentration
subject: HHI
subject: Antitrust markets

description: Studien dokumentieren weltweit steigende Marktkonzentration, Gewinne und Preisaufschläge in vielen Wirtschaftssektoren seit den 1980er Jahren. Doch die Datenanalyse nach Wirtschaftszweigen entspricht nicht den ökonomisch relevanten Märkten im Sinne des Wettbewerbsrechts. Berechnungen auf Basis eines neuartigen Datensatzes über relevante Märkte zeigen hingegen, dass die Marktkonzentration in Deutschland zwischen 1995 und 2014 zwar sehr heterogen, aber der durchschnittliche Trend stabil ist. Im verarbeitenden Gewerbe verharrt er auf einem hohen Niveau, in den Dienstleistungsmärkten nimmt die durchschnittliche Konzentration um 41 Prozent zu. Dies ist sowohl in anderen Ländern wie Frankreich oder dem Vereinigten Königreich als auch in EU- und weltweiten Märkten zu beobachten. Die Konzentrationsniveaus korrelieren mit Markteintrittsbarrieren, während eine strenge Fusionskontrolle der Konzentration entgegenwirkt. Immaterielle Investitionen als möglicher Indikator von erhöhter Effizienz spielen hingegen nur in EU- und weltweiten Dienstleistungsmärkten eine Rolle. Die Kartellbehörden sollten in ihrem Bemühen um eine effektive Wettbewerbspolitik nicht nachlassen, um Wettbewerbsverzerrung durch Marktkonzentration zu verhindern. Andere Politikbereiche müssen ebenso dazu beitragen, Eintrittsbarrieren zu reduzieren.
description: DIW Wochenbericht, 88 (2021), 20, S. 339-347
title: Erzieherinnen spüren nicht nur beim Gehalt zu wenig Anerkennung: Interview
Creators: name: Gambaro, Ludovica
name: Wittenberg, Erich
name: Westermaier, Franz
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 19, S. 333
title: Effect of placental location on accuracy of Pre-Eclampsia screening using uterine artery Doppler indices in Port-Harcourt, Nigeria
Creators: name: Okwudire, Emecheta
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: Arteries / Aorta
subject: Ultrasound-Spectral Doppler
subject: Screening
subject: Obstetrics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The gravid uterus is supplied by anastomoses between the left and right uterine arteries and the ovarian arteries.[1]The contribution of these vessels to placental blood flow depends on placental location and placental-side indices have been...
A new approach to cosmological perturbations in f(R) models
Creators: name: Bertacca, Daniele
name: Bartolo, Nicola
name: Matarrese, Sabino
Publisher: name: arXiv
Year: 2011
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: We propose an analytic procedure that allows to determine quantitatively the deviation in the behavior of cosmological perturbations between a given f(R) modified gravity model and a LCDM reference model. Our method allows to study structure formation in these models from the largest scales, of the order of the Hubble horizon, down to scales deeply inside the Hubble radius, without employing the so-called "quasi-static" approximation. Although we restrict our analysis here to linear perturbations, our technique is completely general and can be extended to any perturbative order.
description: 21 pages, 2 figures; Revised version according to reviewer's suggestions; Typos corrected; Added References
Spectral functions of the Higgs mode near two-dimensional quantum critical points
Creators: name: Podolsky, Daniel
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the Higgs excitation in the Goldstone phase of the relativistic O(N) model in two spatial dimensions at zero temperature. The response functions of the order parameter, and its magnitude-squared, become universal functions of frequency in the vicinity of the quantum critical point described by the Wilson-Fisher fixed point, and we compute them to next-to-leading order in 1/N. The Higgs particle has an infrared singular decay to gapless Goldstone excitations, and its response functions are characterized by a pole in the lower-half of the complex frequency plane. The pole acquires a non-zero real part only at next-to-leading order in 1/N, demonstrating that the Higgs excitation has an oscillatory component even in the scaling limit. Both the real and imaginary parts of the pole position vanish with the correlation length exponent νupon approaching the critical point. We present evidence that the spectral density of the O(N)-invariant amplitude-squared of the order parameter has a peak at a non-zero frequency in the scaling limit. We connect our results to recent experimental studies of the superfluid-insulator quantum phase transition of ultracold bosonic atoms in optical lattices.
description: 23 pages, 4 figures
The Schmidt number and partially entanglement breaking channels in infinite dimensions
Creators: name: Shirokov, M. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A definition of the Schmidt number of a state of an infinite dimensional bipartite quantum system is given and properties of the corresponding family of Schmidt classes are considered. The existence of states with a given Schmidt number such that any their countable convex decomposition does not contain pure states with finite Schmidt rank is established. Partially entanglement breaking channels in infinite dimensions are studied. Several properties of these channels well known in finite dimensions are generalized to the infinite dimensional case. At the same time, the existence of partially entanglement breaking channels (in particular, entanglement breaking channels) such that all operators in any their Kraus representations have infinite rank is proved.
description: 20 pages, the minor corrections have been made
title: Percutaneous infra-colic gastrostomy insertion – considerations and approach to higher perceived risks
Creators: name: Ganti, Srujana
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Gastrointestinal tract
subject: Interventional non-vascular
subject: Oncology
subject: Fluoroscopy
subject: CT
subject: Safety
subject: Technical aspects
subject: Swallowing disorders
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To understand the anatomical implications of infra-colic gastrostomy insertion. To undertake and complete radiologic gastrostomy if the colon cannot be displaced caudally by conventional...
title: Atypical CT appearances of Diffuse large B cell lymphoma in HIV patients; A case series
Creators: name: Nganga, Edward
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Lymphoma
subject: Infection
subject: AIDS
subject: Staging
subject: CT
subject: Thorax
subject: Pelvis
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To demostrate atypical imaging appearances of DLBCL in HIV patients To differentiate lymphoma from lymphadenopathy of infectious aetiology in the setting of...
Evaluación de los proyectos de I+D+i
Creators: name: Delzo Lazo, Yahir
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Subvención para investigación
subject: Research grants
subject: Science administration
subject: Administración de la ciencia
subject: http://vocabularies.unesco.org/thesaurus/concept2071

description: Presentación para el Taller de Formulación de Proyectos de I+D+i con Fondos Concursables. Universidad Nacional Jorge Basadre Grohmann, Vicerrectorado de Investigación. Tacna, Perú. 4 de agosto de 2020.
Nonperturbative infrared effects for light scalar fields in de Sitter space
Creators: name: Arai, Takashi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the phi^4 scalar field theory in de Sitter space using the 2PI effective action formalism. This formalism enables us to investigate the nonperturbative quantum effects. We use the mean field and gap equations and calculate the physical mass and effective potential. We find that nonperturbative infrared effects on de Sitter space produce a curvature-induced mass and work to restore the broken Z_2 symmetry.
description: 14 pages, 3 figures, section 2 revised, discussion in section 4 changed, results not changed
Instrumentos de gestión editorial: equipo editorial
Creators: name: Santillán-Aldana, Julio
Publisher: name: Zenodo
Year: 2020
Subjects: subject: revistas científicas
subject: academic journals
subject: publicaciones científicas
subject: scientific publications
subject: http://vocabularies.unesco.org/thesaurus/concept15070

description: Capacitación sobre los instrumentos básicos de gestión para proyectos editoriales de publicaciones periódicas. Se exponen los principales aspectos de la elaboración de la nómina del equipo editorial de una revista científica. Fondo Editorial Universitario, Vicerrectorado de Investigación, Universidad Nacional Jorge Basadre Grohmann. Tacna, Perú.
Analysis of the host-pathogen proteomics of Israeli Acute Paralysis Virus in the honey bee using mass spectrometry
Creators: name: Natrasany, Sarah
Publisher: name: University of British Columbia
Year: 2013

description: Recent declines in honey bee populations worldwide have spurred significant research into the impact of pathogens on colony health. The role of the Israeli Acute Paralysis Virus (IAPV) in hive mortality has become of particular concern since being correlated with colony losses, although the pathogenic mechanism used by IAPV remains largely unknown. To compound this problem, few molecular studies of the honey bee immune response exist. This lack of knowledge poses a significant barrier if we are to address the impact IAPV has on honey bee health. In this thesis, two routes of research were conducted to aid our understanding of the honey bee host-pathogen relationship. First, a cell culture system using honey bee hemocytes was established and optimized to address the lack of an available honey bee in vitro system, which has significantly delayed honey bee molecular research and especially host-pathogen studies. While hemocyte cultures were simple to create, cell division was not observed and attempts to immortalize the hemocytes through oncogene transfection were hindered by the fragility of these cells. Overall, hemocyte cultures are a useful tool for some experimental applications requiring medium numbers of cells and not involving substantial manipulation. Next, to investigate changes in host protein expression during IAPV infection, mass spectrometry-based quantitative proteomics was used to compare IAPV infected and healthy pupae. This approach applied stable isotope dimethylation labeling combined with multidimensional fractionation using strong cation exhcange to identify and quantify ~800 proteins over three time points. Proteins that were significantly changing during infection were determined and clustered into four distinct expression patterns. To infer functional roles of proteins, Drosophila homologues were obtained for each protein in the data set and the corresponding GO Terms used for functional analysis. Proteins involved in processes including translation and the ubiquitin-proteasome pathway, among others, were identified and future investigation of these pathways will be useful in identifying host proteins required for infection. This analysis represents an important first step towards understanding the honey bee host response to IAPV infection through the systems-level analysis of protein expression and demonstrates the utility of mass spectrometry-based proteomics in honey bee research.
title: Erzieherinnen empfinden vielfache Belastungen und wenig Anerkennung
Creators: name: Gambaro, Ludovica
name: Spieß, C. Katharina
name: Westermaier, Franz
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: J44 Professional Labor Markets; Occupational Licensing
subject: Day care teacher
subject: child care worker
subject: life satisfaction
subject: well-being

description: Fachkräfte im Bereich der frühen Bildung und Betreuung sind nicht nur für Familien, sondern für die gesamte Gesellschaft essenziell. Oft wird über die Arbeitsbedingungen und das Gehalt von Erzieherinnen diskutiert. Wie diese selbst ihren Beruf, den Arbeitsalltag und die Entlohnung sehen, zeigt dieser Bericht auf Basis neuer und bis Ende 2019 reichender Daten des Sozio-oekonomischen Panels (SOEP) und einer speziellen SOEP-Zusatzbefragung in Kitas. Demnach sind Erzieherinnen in nahezu allen Bereichen unzufriedener als Grundschullehrerinnen. Mit Blick auf ihre Gesundheit sind Erzieherinnen fast auf dem Zufriedenheitsniveau von Krankenpflegerinnen angelangt. Weit über die Hälfte fühlt sich durch Zeitdruck mäßig bis sehr stark belastet. 81 Prozent empfinden eine Belastung aufgrund eines als nicht angemessen betrachteten Gehalts. Wenn Erzieherinnen ihre Arbeitszeit verändern möchten, wollen sie diese eher verringern. Mehr Personal in den Einrichtungen wäre nötig, um das Arbeitsumfeld insgesamt attraktiver zu machen und mehr Zeit mit den Kindern verbringen zu können. Das würde nicht nur den Erzieherinnen, sondern auch den Kindern, Familien und der gesamten Gesellschaft zugutekommen. Ein koordiniertes und verstärktes Engagement aller Beteiligten – vom Bund über die Länder und Kommunen bis zu den Kita-Trägern – ist dafür nötig
description: DIW Wochenbericht, 88 (2021), 19, S. 323-332
Bayesian Inference with Optimal Maps
Creators: name: Moselhy, Tarek A. El
name: Marzouk, Youssef M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computation (stat.CO)
subject: Numerical Analysis (math.NA)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We present a new approach to Bayesian inference that entirely avoids Markov chain simulation, by constructing a map that pushes forward the prior measure to the posterior measure. Existence and uniqueness of a suitable measure-preserving map is established by formulating the problem in the context of optimal transport theory. We discuss various means of explicitly parameterizing the map and computing it efficiently through solution of an optimization problem, exploiting gradient information from the forward model when possible. The resulting algorithm overcomes many of the computational bottlenecks associated with Markov chain Monte Carlo. Advantages of a map-based representation of the posterior include analytical expressions for posterior moments and the ability to generate arbitrary numbers of independent posterior samples without additional likelihood evaluations or forward solves. The optimization approach also provides clear convergence criteria for posterior approximation and facilitates model selection through automatic evaluation of the marginal likelihood. We demonstrate the accuracy and efficiency of the approach on nonlinear inverse problems of varying dimension, involving the inference of parameters appearing in ordinary and partial differential equations.
description: 66 pages, 26 figures. Minor revisions and improvements throughout. Published in Journal of Computational Physics
title: Mesenteric panniculitis. ¨The fat must also be looked at¨
Creators: name: Averanga Ticona, Gustavo
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Gastrointestinal tract
subject: Peritoneum
subject: CT
subject: Ultrasound
subject: Education
subject: Inflammation
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Make a conceptual review of mesenteric panniculitis. To demonstrate the imaging relationship between the different diagnostic imaging methods for the identification of mesenteric panniculitis, scope, and limits. Identify pathologies associated with...
title: Seit 2008 hat sich der Anteil derer, die sich Grundbedürfnisse nicht leisten können, halbiert: Interview
Creators: name: Grabka, Markus M.
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 18, S. 317
title: Role of ultrasound in differentiating beningn and malignant lesions of male breast
Creators: name: Abubacker Sulaiman, Farook
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Diagnostic procedure
subject: Ultrasound
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The initial imaging evaluation of a finding in the male breast is performed with mammography. Sonography is frequently used as an adjunct to mammography but is less often used as the primary imaging modality. The objective of this article is to...
title: Einkommensungleichheit stagniert langfristig, sinkt aber während der Corona-Pandemie leicht
Creators: name: Grabka, Markus M.
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: D31 Personal Income, Wealth, and Their Distributions
subject: I31 General Welfare
subject: I32 Measurement and Analysis of Poverty
subject: Income inequality
subject: poverty
subject: SOEP

description: Sowohl Löhne als auch bedarfsgewichtete Haushaltseinkommen sind im Zeitraum 2013 bis 2018 real um gut zehn Prozent gestiegen. Hiervon profitierten alle Einkommensgruppen. Die Ungleichheit der Löhne ist seit mehreren Jahren rückläufig und liegt wieder auf dem Niveau wie zu Beginn der 2000er Jahre. Parallel dazu ist der Niedriglohnsektor um zwei Prozentpunkte geschrumpft. Anders verhält es sich bei den Haushaltseinkommen, bei denen sich die Ungleichheit seit vielen Jahren kaum verändert hat. Auch die Niedrigeinkommensquote stagniert. Allerdings ist der Anteil der Personen, die von essentiellem Mangel (materieller Deprivation) betroffen sind, auf ein im europäischen Vergleich niedriges Niveau gesunken. Seit Ausbruch der Covid-19-Pandemie hat die Einkommensungleichheit in Deutschland leicht abgenommen, was vor allem an den rückläufigen Einkommen bei den Selbstständigen liegen dürfte. Die Pandemie birgt aber die Gefahr, dass durch eine steigende Zahl von Insolvenzen und Arbeitslosen die Einkommen in der Breite wieder sinken. Die Politik sollte die Hilfen an Selbstständige und Unternehmen nicht zu früh einstellen und deren Zielgenauigkeit nachjustieren.
description: DIW Wochenbericht, 88 (2021), 18, S. 307-316
title: Variability of coronary plaque burden evaluation by low-dose coronary CTA with iterative model reconstruction
Creators: name: Huang, Xin
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cardiac
subject: Lung
subject: Lymph nodes
subject: CT
subject: CT-Angiography
subject: CT-Quantitative
subject: CAD
subject: Computer Applications-Detection, diagnosis
subject: Computer Applications-General
subject: Cancer
subject: Lymphoma
subject: Metastases

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Coronary CT angiography (CCTA) has a high diagnostic sensitivity and negative exclusion value for coronary heart disease. As a non-invasive test, it is expected to replace invasive coronary angiography (CAG) and intravascular ultrasound.The full...
Ionic Interactions in Biological and Physical Systems: a Variational Treatment
Creators: name: Eisenberg, Bob
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Chemistry is about chemical reactions. Chemistry is about electrons changing their configurations as atoms and molecules react. Chemistry studies reactions as if they occurred in ideal infinitely dilute solutions. But most reactions occur in nonideal solutions. Then everything (charged) interacts with everything else (charged) through the electric field, which is short and long range extending to boundaries of the system. Mathematics has recently been developed to deal with interacting systems of this sort. The variational theory of complex fluids has spawned the theory of liquid crystals. In my view, ionic solutions should be viewed as complex fluids. In both biology and electrochemistry ionic solutions are mixtures highly concentrated (~10M) where they are most important, near electrodes, nucleic acids, enzymes, and ion channels. Calcium is always involved in biological solutions because its concentration in a particular location is the signal that controls many biological functions. Such interacting systems are not simple fluids, and it is no wonder that analysis of interactions, such as the Hofmeister series, rooted in that tradition, has not succeeded as one would hope. We present a variational treatment of hard spheres in a frictional dielectric. The theory automatically extends to spatially nonuniform boundary conditions and the nonequilibrium systems and flows they produce. The theory is unavoidably self-consistent since differential equations are derived (not assumed) from models of (Helmholtz free) energy and dissipation of the electrolyte. The origin of the Hofmeister series is (in my view) an inverse problem that becomes well posed when enough data from disjoint experimental traditions are interpreted with a self-consistent theory.
description: As prepared for Faraday Discussion, Pavel Jungwirth Organizer, 3 - 5 September 2012, Queens College Oxford, UK on Ion Specific Hofmeister Effects. Version 2 has significant typo corrections in eq. 1 and eq. 4, and has been reformatted to be easier to read
Curvature invariants, geodesics and the strength of singularities in Bianchi-I loop quantum cosmology
Creators: name: Singh, Parampreet
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the effects of the underlying quantum geometry in loop quantum cosmology on spacetime curvature invariants and the extendibility of geodesics in the Bianchi-I model for matter with a vanishing anisotropic stress. Using the effective Hamiltonian approach, we find that even though quantum geometric effects bound the energy density and expansion and shear scalars, divergences of curvature invariants are potentially possible under special conditions. However, as in the isotropic models in LQC, these do not necessarily imply a physical singularity. Analysis of geodesics and strength of such singular events, point towards a general resolution of all known types of strong singularities. We illustrate these results for the case of a perfect fluid with an arbitrary finite equation of state $w > -1$, and show that curvature invariants turn out to be bounded, leading to the absence of strong singularities. Unlike classical theory, geodesic evolution does not break down. We also discuss possible generalizations of sudden singularities which may arise at a non-vanishing volume, causing a divergence in curvature invariants. Such finite volume singularities are shown to be weak and harmless.
description: Discussion on a possible existence of a non-singularity theorem added. To appear in PRD
title: Correlation between periventricular white matter lesions and cognitive function in a hospital setup in middle aged and elderly population.
Creators: name: Abubacker Sulaiman, Farook
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dementia
subject: Diagnostic procedure
subject: MR
subject: Neuroradiology brain
subject: CNS

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The association of cerebral white matter lesions (WMLs) with cognitive status is not well understood in middle-aged & elderly individuals. Our aim was to determine the specific contribution of periventricular hyperintensities (PVHs) to cognitive...
title: Dynamic PET Perfusion Imaging (DPPI) to Characterize Thoracic Tumors: A Phase I Assessment of Ultra-fast Digital PET as an Imaging Biomarker
Creators: name: Knopp, Michael
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Molecular imaging
subject: Nuclear medicine
subject: Oncology
subject: PET-CT
subject: Molecular imaging
subject: Cancer
subject: Biological effects

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Dynamic PET perfusion imaging (DPPI), despite its long history, has become a forgotten technique as clinical perfusion imaging moved to dynamic contrast enhanced MRI and CT. We intend to redevelop DPPI using next-generation digital PET technology...
Music business education in the new music industries
Creators: name: O'HARA, BENJAMIN
Publisher: name: Monash University
Year: 2021
Subjects: Education
Entertainment

description: Since the 1990s, there has been a steady growth in music business education courses in vocational and higher education. This thesis explores the suitability and usefulness of music industries education, industry perceptions of music business education, and the appropriate types of skills and knowledge being taught in music business courses in Australia. It combines industry and educator interviews with curriculum analysis to review industry structures and attitudes to career pathways. Viewing music business education as a contested “field”, the thesis links individual/collective practices to wider tensions between a “real-world” industry and the discourses and practices of the classroom.
Strong coupling isotropization of non-Abelian plasmas simplified
Creators: name: Heller, Michal P.
name: Mateos, David
name: van der Schee, Wilke
name: Trancanelli, Diego
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the isotropization of a homogeneous, strongly coupled, non-Abelian plasma by means of its gravity dual. We compare the time evolution of a large number of initially anisotropic states as determined, on the one hand, by the full non-linear Einstein's equations and, on the other, by the Einstein's equations linearized around the final equilibrium state. The linear approximation works remarkably well even for states that exhibit large anisotropies. For example, it predicts with a 20% accuracy the isotropization time, which is of the order of t_iso \lesssim 1/T, with T the final equilibrium temperature. We comment on possible extensions to less symmetric situations.
description: 4 pages, 4 figures; v2: minor changes, matches PRL version
title: Mobilfunk-Netzausbau in dünn besiedelten Regionen: KonsumentInnen profitieren von Roaming
Creators: name: Baake, Pio
name: Mitusch, Kay
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021
Subjects: subject: L13 Oligopoly and Other Imperfect Markets
subject: L96 Telecommunications
subject: Network Sharing
subject: Cooperations

description: Die Bundesnetzagentur hat im Rahmen der Frequenzvergabe 2019 für den Mobilfunk die Netzanbieter verpflichtet, einen bestimmten Versorgungsgrad der Bevölkerung zu erreichen. Erstmals wurden dabei auch Kooperationen zwischen verschiedenen Netzanbietern erlaubt. Es wurde jedoch offengelassen, welche Formen der Kooperation zulässig sind. Dieser Bericht zeigt anhand einer Modellrechnung, dass die Anbieter durch gemeinsame Nutzung von Netzinfrastrukturen Kosten sparen können. Allerdings sinkt dadurch die insgesamt erreichte Netzabdeckung, wenn die regulatorischen Vorgaben nicht angepasst werden. Ein Weg, die Netzabdeckung und gleichzeitig den Nutzen der KonsumentInnen zu erhöhen, wäre, die Regelungen des internationalen Roamings auf den nationalen Rahmen zu übertragen. Hierbei können Netzanbieter andere Netze zur Übertragung von Daten und Gesprächen, nicht aber zum Angebot eigener Netzanschlüsse nutzen. Insgesamt zeigt sich, dass mit der Vorgabe einer Mindestversorgung Kooperationen zwischen den Anbietern möglich sind, von denen sowohl die KonsumentInnen als auch die Anbieter profitieren. KonsumentInnen können dabei von Gebietsabsprachen zwischen den Anbietern profitieren – sofern sichergestellt ist, dass der geforderte Versorgungsgrad erreicht wird.
description: DIW Wochenbericht, 88 (2021), 17, S. 291-299
Maternal Media Use and Infant Media Exposure are Associated with Developmental Outcomes at 4 and 8 Months
Creators: name: Paoletti, Melania
name: Focaroli, Valentina
name: Pecora, Giulia
name: Barr, Rachel
name: Chiarotti, Flavia
name: Caravale, Barbara
name: Gasparini, Corinna
name: Sacco, Giorgia
name: Gastaldi, Serena
name: Addessi, Elsa
name: Bellagamba, Francesca
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Objective. Early screen exposure is associated with poorer attention, inhibitory control, and language development outcomes. However, the content and context of media exposure are better predictors of outcomes than overall amount. The present study evaluated whether infants’ digital media exposure and maternal digital media use were concurrently and longitudinally associated with infant development in 187 infants at 4 and 8 months. Design. Mothers completed a questionnaire on family media exposure in different contexts, the short form of the MacArthur-Bates Communicative Development Inventories, and the Developmental Profile 3. A series of multiple linear regressions was performed to investigate associations between media use and infant development in the socioemotional, communicative and cognitive domains. Results. Positive maternal strategies such as using media for educating and amusing the infant were positively associated with socioemotional development at 4 months of age; time dedicated to reading books with the infant (either electronic or paper books) and using screens to communicate were positively associated with infant communicative and socioemotional development at 8 months of age. Mothers’ overall usage of media and use of digital media during childhood routines, as well as the time infants spent daily on a device at 4 and 8 months of age, were associated with lower emerging socioemotional and communicative skills.
Conclusions. Findings highlight the potentially positive and negative impacts of very early digital media exposure and could have public health significance.
title: Deep into diffusion tensor imaging.
Creators: name: Abubacker Sulaiman, Farook
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: CNS
subject: MR
subject: CT
subject: Diagnostic procedure
subject: Cerebral palsy

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: We intend to reveal the underlying theory of diffusion tensor imaging (DTI) and fiber tractography. To provide details in brief about the anatomy of white matter tracts as seen by using diffusion tensor...
Gender-Differentiated Emotion Socialization: Evoked by Child Behaviors, Parents’ Neural Responses Toward Gender-Stereotype Violations, or Both?
Creators: name: Portengen, Christel M.
name: Harrewijn, Anita
name: van Baar, Anneloes L.
name: Endendijk, Joyce J.
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Mental Health
subject: Plant Biology
subject: FOS: Biological sciences

description: Objective. During early childhood, gender-specific trajectories of behavior and emotional development become more prominent. However, it remains unclear whether parents’ gender-differentiated socialization is evoked by children’s own behaviors and emotions, processes within parents, or both. This study examined whether parents’ gender labeling of emotional characters could be predicted by (1) their children’s behavior and emotional expressions, (2) parents’ neural responses to gender-stereotype violations and confirmations by their own children, or (3) both. Design. Home visits were conducted with 71 families consisting of a father, mother, and a daughter and son aged 3–6 years. Electroencephalographic measurements were obtained from parents while they passively viewed pictures of their daughter and son combined with gender-typed behavior and emotional expression words. Mothers’ and fathers’ use of gender labels was coded while they read a picture book to their daughter and son in which gender-neutral child characters displayed sadness, fear, and anger. Children’s gender-typed behavior and emotional expressions were measured through parent-reports on the Brief Symptom Checklist. Results.
No relations were found between parents’ use of gender labels and parents’ neural processing of gender-stereotype confirmations and violations or children’s behavior and emotional expressions. Conclusions. Parents’ neural processing and children’s emotion and behavioral expressions did not affect parents’ use of gender labels. Parents were more likely to label pictures of sad children as “girl” than as “boy,” but this difference could not be predicted from either parent-centered or child-centered factors.
title: Hacking neurocysticercosis – a complete review
Creators: name: Abubacker Sulaiman, Farook
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: CNS
subject: MR
subject: CT
subject: Diagnostic procedure
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Neurocysticercosis is a neurologic parasitic disease caused by the encysted larva of the tapeworm Taenia solium and is the most important parasitic disease of the human central nervous system. In this review we have described the lifecycle of Taenia...
title: Gesundheitsprävention in Kitas und Schulen sollte höheren Stellenwert erhalten: Interview
Creators: name: Barschkett, Mara
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 16, S. 285
Compactified Jacobians and q,t-Catalan numbers, II
Creators: name: Gorsky, Evgeny
name: Mazin, Mikhail
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We continue the study of the rational-slope generalized $q,t$-Catalan numbers $c_{m,n}(q,t)$. We describe generalizations of the bijective constructions of J. Haglund and N. Loehr and use them to prove a weak symmetry property $c_{m,n}(q,1)=c_{m,n}(1,q)$ for $m=kn\pm 1$. We give a bijective proof of the full symmetry $c_{m,n}(q,t)=c_{m,n}(t,q)$ for $\min(m,n)\le 3$. As a corollary of these combinatorial constructions, we give a simple formula for the Poincaré polynomials of compactified Jacobians of plane curve singularities $x^{kn\pm 1}=y^n$. We also give a geometric interpretation of a relation between rational-slope Catalan numbers and the theory of $(m,n)$-cores discovered by J. Anderson.
description: 24 pages
title: Data collection tools for: "Understanding the social and physical menstrual health environment of secondary schools in Uganda: A qualitative methods study"
Creators: name: Ssemata, Andrew Sentoogo
name: Ndekezi, Denis
name: Kansiime, Catherine
name: Bakanoma, Robert
name: Tanton, Clare
name: Nelson, Kate Andrews
name: Hytti, Laura
name: Neema, Stella
name: Torondel, Belen
name: Seeley, Janet
name: Weiss, Helen A.
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2023

description: A set of data collection tools associated with the manuscript, "Understanding the social and physical menstrual health environment of secondary schools in Uganda: A qualitative methods study". It includes transect walk guide, observation checklist, group discussion guide for students, and interview guides for headteachers/students/teachers. Files are held in the PLOS Global Public Health area on Figshare.
Initial Systematic Investigations of the Landscape of Low Layer NAHE Extensions
Creators: name: Renner, Timothy
name: Greenwald, Jared
name: Moore, Douglas
name: Cleaver, Gerald
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The discovery that the number of physically consistent string vacua is on the order of 10^500 has prompted several statistical studies of string phenomenology. Contained here is one such study that focuses on the Weakly Coupled Free Fermionic Heterotic String (WCFFHS) formalism. Presented are systematic extensions of the well-known NAHE (Nanopoulos, Antoniadis, Hagelin, Ellis) set of basis vectors, which have been shown to produce phenomenologically realistic models. Statistics related to the number of U(1)'s, gauge group factors, non-Abelian singlets, ST SUSYs, as well as the gauge groups themselve are discussed for the full range of models produced as well as models containing GUT groups only. Prior results of other large-scale investigations are compared with these regarding the aforementioned quantities. Statistical coupling between the gauge groups and the number of ST SUSYs is also discussed, and it was found that for order-3 extensions there are more models with enhanced ST SUSY when there is an exceptional group present. Also discussed are some three-generation GUT models found in the data sets. These models are unique because they come from basis vectors which still have a geometric interpretation -- there are no "rank-cuts" in these models.
description: 65 Pages, 31 Tables, 31 Figures
title: Philipp Jakob Oswald Ochsenstein
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Philipp Jakob Oswald Ochsenstein as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
A measurement of the material in the ATLAS inner detector using secondary hadronic interactions
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ATLAS inner detector is used to reconstruct secondary vertices due to hadronic interactions of primary collision products, so probing the location and amount of material in the inner region of ATLAS. Data collected in 7 TeV pp collisions at the LHC, with a minimum bias trigger, are used for comparisons with simulated events. The reconstructed secondary vertices have spatial resolutions ranging from ~200 microns to 1 mm. The overall material description in the simulation is validated to within an experimental uncertainty of about 7%. This will lead to a better understanding of the reconstruction of various objects such as tracks, leptons, jets, and missing transverse momentum.
description: 22 pages plus author list (41 pages total), 12 figures, 4 tables, final version to appear in Journal of Instrumentation
Growing sustainability education through community-university engagement : a case of community-based food system study at the University of British Columbia
Creators: name: Sipos Randor, Yona
Publisher: name: University of British Columbia
Year: 2014

description: This action research case study investigates community-based experiential learning (CBEL) in a large undergraduate food systems course, documenting classroom innovations, highlighting community partner experiences, and offering recommendations for long-term improvement. It evaluates how the pedagogical synergy of sustainability education, CBEL, and food system study is relevant for post-secondary sustainability transitions. The case is situated in a major Canadian university, the University of British Columbia, within the interdisciplinary Faculty of Land and Food Systems. This dissertation investigates several iterations of one required undergraduate course and the development of the embedded British Columbia Food System Project (BCFSP), which includes approximately 200 students per term working with thirty community partners. This qualitative action research incorporates case study, primary engagement by the author, and semi-structured interviews with community partners to address two specific questions. First, what innovations were developed to integrate CBEL into a large course? Second, what insights did community partners share for more effective community-university partnerships? Five innovations were identified. First, student integrators who connect numerous food system projects encourage better understanding of complex issues among the many students. Second, projects spanning multiple years maximize returns from costly relationship development. Third, community service-learning alongside community-based research advances student understanding of community and project research potential. Fourth, offering workshops for teaching teams and students supports their limited experience with CBEL. Finally, engagement protocols clarify communication pathways with community partners to not overtax their time and resources. Community partner interview analysis corroborates challenges and benefits described in previous literature, and it contributes a new insight, that universities and associated communities need each other. While community partners articulated significant cultural differences between communities and universities, they see partnerships as a way to overcome perceived disparities and offer an alternative perspective that universities and communities share needs, interests, and resources. CBEL in particular offers options that are rooted in community and place. Engaging in CBEL can empower communities to demand more from universities, such that resources flow more freely, particularly from universities to communities. A final outcome is a biomimetic metaphor that accommodates the necessary networks of reciprocity, resilience, recursivity, and non-linear resource exchange.
Holonomy Groups of Complete Flat Pseudo-Riemannian Homogeneous Spaces
Creators: name: Globke, Wolfgang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C30, 57S30, 20G05

description: We show that a complete flat pseudo-Riemannian homogeneous manifold with non-abelian linear holonomy is of dimension at least 14. Due to an example constructed in a previous article by Oliver Baues and the author, this is a sharp bound. Also, we give a structure theory for the fundamental groups of complete flat pseudo-Riemannian manifolds in dimensions less than 7. Finally, we observe that every finitely generated torsion-free 2-step nilpotent group can be realized as the fundamental group of a complete flat pseudo-Riemannian manifold with abelian linear holonomy.
description: 16 pages