cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Giant Superfluorescent Bursts from a Semiconductor Magnetoplasma
Creators: name: Noe, G. T.
name: Kim, J. -H.
name: Lee, J.
name: Wang, Y.
name: Wojcik, A. K.
name: McGill, S. A.
name: Reitze, D. H.
name: Belyanin, A. A.
name: Kono, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Currently, considerable resurgent interest exists in the concept of superradiance (SR), i.e., accelerated relaxation of excited dipoles due to cooperative spontaneous emission, first proposed by Dicke in 1954. Recent authors have discussed SR in diverse contexts, including cavity quantum electrodynamics, quantum phase transitions, and plasmonics. At the heart of these various experiments lies the coherent coupling of constituent particles to each other via their radiation field that cooperatively governs the dynamics of the whole system. In the most exciting form of SR, called superfluorescence (SF), macroscopic coherence spontaneously builds up out of an initially incoherent ensemble of excited dipoles and then decays abruptly. Here, we demonstrate the emergence of this photon-mediated, cooperative, many-body state in a very unlikely system: an ultradense electron-hole plasma in a semiconductor. We observe intense, delayed pulses, or bursts, of coherent radiation from highly photo-excited semiconductor quantum wells with a concomitant sudden decrease in population from total inversion to zero. Unlike previously reported SF in atomic and molecular systems that occur on nanosecond time scales, these intense SF bursts have picosecond pulse-widths and are delayed in time by tens of picoseconds with respect to the excitation pulse. They appear only at sufficiently high excitation powers and magnetic fields and sufficiently low temperatures - where various interactions causing decoherence are suppressed. We present theoretical simulations based on the relaxation and recombination dynamics of ultrahigh-density electron-hole pairs in a quantizing magnetic field, which successfully capture the salient features of the experimental observations.
description: 21 pages, 4 figures
title: Portal biliopathy: imaging findings.
Creators: name: Ruiz Martín, María
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Abdomen
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Ischaemia / Infarction

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To bring into light portal cholangitis as an entity that should be present in a patient with thrombosis and portal hypertension, especially in patients with elevated alkaline phosphatase and bilirubin or with cholangitis or cholestasis...
title: Prevalence of CAC in a lung cancer screening cohort and correlation of visual and automated scoring
Creators: name: Dassanayake, Yamal
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Cardiac
subject: CT
subject: Computer Applications-3D
subject: Calcifications / Calculi

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Individuals undergoing lung cancer screening may be at high risk of coronary artery disease in view of shared risk factors (older age; extensive smoking histories). Non-contrast, low dose CT scans used for lung cancer screening could provide...
A survey of out patient department prescriptions of selected departments of a tertiary care hospital on treatment practices of infections
Creators: name: Shyam, Sharan
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 111501 Basic Pharmacology
subject: FOS: Clinical medicine
subject: Pharmacology
subject: 111502 Clinical Pharmacology and Therapeutics

description: Introduction: India is the largest consumer of antibiotics in the world. Antimicrobial agents (AMA) are also the most misused and excessively prescribed therapeutic agents. Objectives: A survey of output patient department (OPD) prescription chits of a tertiary care government hospital was carried out to describe the current treatment practices in the management of infections.Subjects and Methods: Thousand and five hundred OPD prescriptions were analyzed for the prevalence of antimicrobials prescribed by each specialist OPD and the systemic infections which were treated by using these AMA. The data of antibiotic susceptibility tests for the year 2018 were obtained for the analysis on current treatment practices of hospital infections. Results: About 24.4% of all 1500 OPD prescriptions encountered from the seven departments of the hospital contained an antibacterial. The highest proportion of AMA was seen in the dental OPD (66.6%) followed by ENT and surgical OPD (36.8% and 36%, respectively) and the least AMA were prescribed in gynecology and obstetrical OPD (11%). Out of the 367 AMA prescriptions, 92 prescriptions had 2 or more antibacterials. About 54.7% of these AMA prescribed were generic oral drugs and only two prescription counts were of injectableAMA. 62% of the AMA prescriptions were for the duration of use between 5 and 10 days. 53.4% of the AMA prescription counts belonged to the ACCESS group of antibiotics, 44.1% to the WATCH group and 2.5% to the RESERVE group as classified by WHO.Conclusions: The present study emphasizes the need to re‑formulate local guidelines of antimicrobial use in OPD patients based on hospital antibiotic susceptibility tests.
title: Radiologic-pathologic correlation of Lesions of Uncertain Malignant Potential on Core Biopsy (B3 lesions).
Creators: name: Lorente Ramos, Rosa María
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Pathology
subject: Diagnostic procedure
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the pathologic classification of lesions on core biopsy , with emphasis on lesions of uncertain malignant potential (B3). To illustrate correlation of imaging findings (mammogram, US, MR) of B3 lesions from our series of breast lesions...
Controls on rare earth elements distribution from Kerala coast, southwest India over the past 2000 years
Creators: name: Manoj, M. C.
name: Thakur, Biswajeet
name: Uddandam, Prem Raj
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Climate changes on the Southwest coast of India have essential impacts on social and economic development, and the ecosystem of Southern India. Here, we present the last 2000 cal yr AD rare earth elemental records of the sediment core from the Cherai, Kerala coast, southwest India. The light rare earth elements (LREE) were the most abundant fraction in the core sediment, followed by medium rare earth elements (MREE) and heavy rare earth elements (HREE). Total REE (ΣREE) showed a significant correlation with fine fractions and Y, Al, Ti, Fe and total organic carbon content of the sediments, suggesting an intrinsic relationship between REE, total organic carbon and fine grain-size fraction. The LREE and MREE were enriched over the MREE due to their high adsorption with the fine fraction. The lack of correlation between terrigenous elements and low Y/Ho elemental ratio suggests a minor shift in the source materials. High ΣREE values during warm (Medieval Warm Period/ Medieval Climate Anomaly (MWP/MCA) and cold Little Ice Age (LIA) periods indicate a high influx of lithogenous materials during these intervals. The negative δCe values except MCA suggest a suboxic condition and the δEu values suggest feldspar-rich source rock material derived from moderately weathered sediments. It also indicates that the REE variations are controlled by factors like river supply, biological productivity and redox condition. A close link between monsoonal precipitation and REE records existed on the southwest coast of India. During the Dark Age Cold Period (DACP)/MWP transition, a sudden increase in monsoon is documented and the monsoon precipitation was further decreased during LIA and Current Warming Period. The Cherai core REE records synchronize with the episodes of centennial-scale warm/cool events and essentially follow the northern hemispheric climate cycles.
Phase lag in epidemics on a network of cities
Creators: name: Rozhnova, G.
name: Nunes, A.
name: McKane, A. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study the synchronisation and phase-lag of fluctuations in the number of infected individuals in a network of cities between which individuals commute. The frequency and amplitude of these oscillations is known to be very well captured by the van Kampen system-size expansion, and we use this approximation to compute the complex coherence function that describes their correlation. We find that, if the infection rate differs from city to city and the coupling between them is not too strong, these oscillations are synchronised with a well defined phase lag between cities. The analytic description of the effect is shown to be in good agreement with the results of stochastic simulations for realistic population sizes.
description: 10 pages, 6 figures
title: Unternehmen leisten einen wesentlichen Beitrag zur Integration Geflüchteter in Deutschland
Creators: name: Kritikos, Alexander S.
name: Priem, Maximilian
name: Winkler, Anne-Christin
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022
Subjects: subject: F22 International Migration
subject: J15 Economics of Minorities, Races, and Immigrants; Non-labor Discrimination
subject: E24 Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital
subject: migration
subject: labor market integration
subject: integration programs
subject: survey

description: Nach der im Jahr 2015 verstärkt einsetzenden Zuwanderung Geflüchteter hat jüngsten Studien zufolge etwa jedes vierte Unternehmen in Deutschland Geflüchtete eingestellt. Laut einer Umfrage unter 100 Unternehmen mit Erfahrung in der Integration von Geflüchteten hat die Einstellung Geflüchteter verschiedene Effekte. Die Unternehmen berichten von einem Anstieg der Zufriedenheit in der Belegschaft, besserer Positionierung als attraktiver Arbeitgeber und von positiven unternehmerischen Entwicklungen. Gleichzeitig ist die Einstellung von Geflüchteten mit Herausforderungen verbunden, etwa mit Hürden im Einstellungsprozess, mit mangelnden Sprachkenntnissen sowie mit nicht anerkannten Qualifikationen. Diese Probleme lösen die Unternehmen, indem sie staatliche und private Unterstützungsangebote sowie firmeninterne Maßnahmen nutzen. Während mit diesen Maßnahmen die Integration Geflüchteter in die abhängige Beschäftigung gut gelingt, bleibt das Potenzial in Richtung Selbstständigkeit nahezu ungenutzt. Die Gründungsaktivitäten unter den Geflüchteten fallen in Deutschland weitaus geringer aus als in deren Herkunftsländern. Entsprechend sollten Förderungsmaßnahmen für Geflüchtete zur Aufnahme einer Selbstständigkeit stärker in den Blick genommen werden.
description: DIW Wochenbericht, 89 (2022), 20, S. 287-294
title: Imaging Breast asymmetries. Tips and tricks.
Creators: name: Lorente Ramos, Rosa María
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Diagnostic procedure
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To discuss the management of breast asimmetries , including diagnostic difficultie s and i maging work-up with attention:to additional mammogram projections, and complementary techniques (US, tomosynthesis, MR) To present cases from our series with...
title: TNF-R1 correlates with cerebral perfusion and acute ischemia following subarachnoid hemorrhage
Creators: name: Fragata, Isabel
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Aneurysms
subject: Diagnostic procedure
subject: MR-Diffusion/Perfusion
subject: CT-Quantitative
subject: Neuroradiology brain
subject: Haemorrhage

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Early cerebral hypoperfusion and ischemia occur after subarachnoid haemorrhage (SAH), and influence clinical prognosis. Pathophysiological mechanisms are known toinvolve inflammatory mediators. TNF-α pathways has been associated with formation and...
A search set model of path tracing in graphs
Creators: name: Dawson, Jessica Quinn
Publisher: name: University of British Columbia
Year: 2013

description: Path tracing is a common task in many real world uses of graphs that display networks of relationships. Despite previous work in the evaluation of how factors, such as edge-edge crossings, impact the readability of graph layouts, what makes one path-tracing task more difficult than another is not well understood. To address this question we conducted an observational user study with 12 participants completing a path-tracing task. Our extensive qualitative analysis of the study data led to a detailed characterization of common path-tracing behaviours. We then created a predictive model of the paths that users are most likely to search, which we name the search set, based on the behaviours we observed. To validate our predictive behavioural model, and to demonstrate how the search set could be used, we conducted a careful comparison of graph readability factors through a hierarchical multiple regression analysis.
ByzRev 03.2021.028: Ingo Schaaf (ed.), Animal Kingdom of Heaven.
Creators: name: Schmidt, Tristan
Publisher: name: The Byzantine Review
Year: 2021

description: Ingo Schaaf (ed.), Animal Kingdom of Heaven. Anthropozoological Aspects in the Late Antique World (Millennium-Studien 80). Berlin – Boston: De Gruyter 2019. 161 pp. – ISBN: 987-3-11-060159-6 (€ 82.95)
description: The Byzantine Review, Bd. 3 (2021)
Exceptional Indices
Creators: name: Gaiotto, Davide
name: Razamat, Shlomo S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently a prescription to compute the superconformal index for all theories of class S was proposed. In this paper we discuss some of the physical information which can be extracted from this index. We derive a simple criterion for the given theory of class S to have a decoupled free component and for it to have enhanced flavor symmetry. Furthermore, we establish a criterion for the "good", the "bad", and the "ugly" trichotomy of the theories. After interpreting the prescription to compute the index with non-maximal flavor symmetry as a residue calculus we address the computation of the index of the bad theories. In particular we suggest explicit expressions for the superconformal index of higher rank theories with E_n flavor symmetry, i.e. for the Hilbert series of the multi-instanton moduli space of E_n.
description: 33 pages, 11 figures, v2: minor corrections
title: Computed tomography imaging of Ludwig's angina
Creators: name: Petrovic, Sladjana
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Inflammation
subject: Diagnostic procedure
subject: CT
subject: Head and neck
subject: Emergency

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: -To describe the clinical presentation of Ludwig's angina -To illustrate CT findings of Ludwing`s angina -To describe the complications associated with this...
QO'LDA YOZISH QIYIN BO'LGAN BOLALAR UCHUN MUQOBIL YOZISH TEXNOLOGIYALARI
Creators: name: Klishbaeva, Guljan
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada qo‘lda yozish qiyin bo‘lgan bolalar uchun muqobil yozish texnologiyalari va ularning samaradorligi tahlil qilinadi. Serebral falaj, disleksiya, disgrafiya va boshqa nevrologik yoki motorik muammolarga ega bolalar uchun maxsus texnologiyalar joriy etishning ahamiyati yoritiladi. Klaviatura, ovozli boshqaruv, grafik planshetlar, sensor ekranlar va boshqa moslashtirilgan usullar orqali inklyuziv ta’lim jarayonini takomillashtirish imkoniyatlari muhokama qilinadi. Shuningdek, ushbu texnologiyalar bolalarning mustaqilligini oshirish va ijtimoiy moslashuvini yaxshilashda qanday rol o‘ynashi ko‘rsatilgan.
title: small bowel wall thickening on CT in the ED: What the radiologist should know.
Creators: name: Sobieh , AHMED
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Pathology
subject: Education
subject: CT
subject: Small bowel
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Review the differential diagnosis for the finding of bowel wall thickening on CT in the emergency setting. Illustrate key CT findings and discuss clinical pearls associated with various pathologies related to bowel wall...
Concentrations, sources, and health risk assessment of metals in indoor dust collected from visual arts studios of selected tertiary institutions in Southern Nigeria
Creators: name: Iwegbue, Chukwujindu M.A.
name: Nwose, Nnamdi
name: Tesi, Godswill O.
name: Olisah, Chijioke
name: Ujam, Oguejiofo T.
name: Odali, Eze W.
name: Egobueze, Francis E.
name: Nwajei, Godwin E.
name: Martincigh, Bice S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: This study provides data on the concentrations and occupational risk of Cd, Pb, Cr, Ni, Cu, Co, Mn, Zn, and Fe in indoor dust from visual arts studios of nine tertiary institutions in southern Nigeria. The dust samples were digested in aqua regia and their metal concentrations were quantified by atomic absorption spectrometry. The concentrations of metals in dust from visual arts studios ranged from not detected (nd) to 91.5 mg kg−1 Cd, 4.5 to 540 mg kg−1 Pb, 0.10 to 1,100 mg kg−1 Cr, 0.50 to 1,150 mg kg−1 Ni, 10 to 15,600 mg kg−1 Cu, 0.5 to 146 mg kg−1 Co, 3.0 to 3,680 mg kg−1 Mn, 93.5 to 9,600 mg kg−1 Zn, and 853 to 237,000 mg kg−1 Fe. The degree of contamination of the dust particles by metals was assessed by making use of the contamination/pollution index, geoaccumulation index and enrichment factor. These indices suggested that dusts from these visual arts studios were impacted with Cd, Pb, Cu, and Zn. The hazard index (HI) and cancer risk values relating to adults’ exposure to metals in dust from these arts studios were within safe limits. Principal component analysis indicated that the sources of metal contamination in dust from these visual arts studios were related to inputs from constituents of the artist’s materials and vehicular emissions.
Modeling high-energy cosmic ray induced terrestrial and atmospheric neutron flux: A lookup table
Creators: name: Overholt, Andrew
name: Melott, Adrian
name: Atri, Dimitra
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Under current conditions, the cosmic ray spectrum incident on the Earth is dominated by particles with energies < 1 GeV. Astrophysical sources including high energy solar flares, supernovae and gamma ray bursts produce high energy cosmic rays (HECRs) with drastically higher energies. The Earth is likely episodically exposed to a greatly increased HECR flux from such events, some of which lasting thousands to millions of years. The air showers produced by HECRs ionize the atmosphere and produce harmful secondary particles such as muons and neutrons. Neutrons currently contribute a significant radiation dose at commercial passenger airplane altitude. With higher cosmic ray energies, these effects will be propagated to ground level. This work shows the results of Monte Carlo simulations quantifying the neutron flux due to high energy cosmic rays at various primary energies and altitudes. We provide here lookup tables that can be used to determine neutron fluxes from primaries with total energies 1 GeV - 1 PeV. By convolution, one can compute the neutron flux for any arbitrary CR spectrum. Our results demonstrate that deducing the nature of primaries from ground level neutron enhancements would be very difficult.
description: 8 pages, 3 figures, JGR - in press
title: No man´s land: imaging anatomy and pathology of the supraclavicular fossa
Creators: name: Marques, Pedro
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Head and neck
subject: Anatomy
subject: CT
subject: Ultrasound
subject: MR
subject: Education
subject: Education and training
subject: Cancer
subject: Pathology

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - To recall the location and anatomical limits of the supraclavicular fossa (SCF). - To specify the structures included in this region, considering the differences between the left and right SCF. - To illustrate the main pathologies in SCF and the...
title: Der nicht vorhandene Gender Gap beim Taschengeld ist eine erfreuliche Nachricht: Interview
Creators: name: Wrohlich, Katharina
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022

description: DIW Wochenbericht, 89 (2022), 19, S. 281
title: Mädchen und Jungen bekommen in Deutschland gleich viel Taschengeld
Creators: name: Hain, Lukas
name: Wrohlich, Katharina
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022
Subjects: subject: D31 Personal Income, Wealth, and Their Distributions
subject: J16 Economics of Gender; Non-labor Discrimination
subject: D14 Personal Finance
subject: Gender Gap
subject: pocket money
subject: children
subject: financial resources

description: Regelmäßig belegen Studien mit Blick auf finanzielle Aspekte Unterschiede zwischen Frauen und Männern. Hinlänglich bekannt sind etwa die Gender Gaps bei Verdiensten und Renten. Dieser Wochenbericht zeigt, dass es eine Ausnahme gibt: Beim Taschengeld sind Mädchen und Jungen in Deutschland im Durchschnitt gleichgestellt. Das gilt für alle Altersgruppen von sieben bis 19 Jahren und auch dann, wenn man die Taschengeldhöhe nach dem Einkommen der Eltern analysiert und danach, ob im Haushalt der Vater oder die Mutter das letzte Wort in finanziellen Angelegenheiten hat. Dieses Ergebnis ist durchaus bemerkenswert, denn bei anderen finanziellen Zuwendungen von Eltern an ihre Kinder, etwa bei Schenkungen und Erbschaften, wurden bereits geschlechtsspezifische Unterschiede nachgewiesen.
description: DIW Wochenbericht, 89 (2022), 19, S. 276-280
title: Skeletal Dysplasias: An Approach to Diagnosis
Creators: name: VASQUEZ, ANDRES
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Education
subject: Conventional radiography
subject: Bones

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Skeletal dysplasias are rare developmental and growth disorders of bone and cartilage that cause abnormalities in bony structures of the body. It is important to be able to recognize the main skeletal alterations and their imaging characteristics...
Evidence for a fractional quantum Hall state with anisotropic longitudinal transport
Creators: name: Xia, Jing
name: Eisenstein, J. P.
name: Pfeiffer, Loren N.
name: West, Ken W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At high magnetic fields, where the Fermi level lies in the N=0 lowest Landau level (LL), a clean two-dimensional electron system (2DES) exhibits numerous incompressible liquid phases which display the fractional quantized Hall effect (FQHE) (Das Sarma and Pinczuk, 1997). These liquid phases do not break rotational symmetry, exhibiting resistivities which are isotropic in the plane. In contrast, at lower fields, when the Fermi level lies in the $N\ge2$ third and several higher LLs, the 2DES displays a distinctly different class of collective states. In particular, near half filling of these high LLs the 2DES exhibits a strongly anisotropic longitudinal resistance at low temperatures (Lilly et al., 1999; Du et al., 1999). These "stripe" phases, which do not exhibit the quantized Hall effect, resemble nematic liquid crystals, possessing broken rotational symmetry and orientational order (Koulakov et al., 1996; Fogler et al., 1996; Moessner and Chalker, 1996; Fradkin and Kivelson, 1999; Fradkin et al, 2010). Here we report a surprising new observation: An electronic configuration in the N=1 second LL whose resistivity tensor simultaneously displays a robust fractionally quantized Hall plateau and a strongly anisotropic longitudinal resistance resembling that of the stripe phases.
description: Nature Physics, (2011)
title: Texture analysis of hepatocellular carcinoma on magnetic resonance imaging (MRI) : assessment for performance in predicting histopathologic grade
Creators: name: LEE, JAE HO
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Computer Applications-Detection, diagnosis
subject: MR
subject: Oncology
subject: Liver
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hepatocellular carcinoma is the sixth most prevalent cancer in the world and the second leading cancer in terms of mortality. Even after the treatment, local recurrence rate is high and occasionally metastasis to other organs is also...
title: Superior mesenteric artery: The vessel forgotten in the abdominal Doppler evaluation
Creators: name: Rolleri Fajardo, Jeremias
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: Arteries / Aorta
subject: Vascular
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Power Doppler
subject: Ultrasound-Spectral Doppler
subject: Education
subject: Normal variants
subject: Screening
subject: Education and training
subject: Obstruction / Occlusion
subject: Image registration

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To analyze and describe the normal morphological and hemodynamic characteristics of the superior mesenteric artery (SMA) in abdominal ultrasound exploration using B-mode and color, power and spectral Doppler mode. To review possible anomalies of the...
An extension of a theorem by Yao & Yao
Creators: name: Roldán-Pensado, Edgardo
name: Soberón, Pablo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In this paper we study $N_d(k)$ the smallest positive integer such that any nice measure $μ$ in $\R^d$ can be partitioned in $N_d(k)$ parts of equal measure so that every hyperplane avoids at least $k$ of them. A theorem of Yao and Yao \cite{YY1985} states that $N_d(1) \le 2^d$. Among other results, we obtain the bounds $N_d(2) \le 3 \cdot 2^{d-1}$ and $N_d(1) \ge C \cdot 2^{d/2}$ for some constant $C$. We then apply these results to a problem on the separation of points and hyperplanes.
Concentrations, sources, and health risk assessment of metals in indoor dust collected from visual arts studios of selected tertiary institutions in Southern Nigeria
Creators: name: Iwegbue, Chukwujindu M.A.
name: Nwose, Nnamdi
name: Tesi, Godswill O.
name: Olisah, Chijioke
name: Ujam, Oguejiofo T.
name: Odali, Eze W.
name: Egobueze, Francis E.
name: Nwajei, Godwin E.
name: Martincigh, Bice S.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: This study provides data on the concentrations and occupational risk of Cd, Pb, Cr, Ni, Cu, Co, Mn, Zn, and Fe in indoor dust from visual arts studios of nine tertiary institutions in southern Nigeria. The dust samples were digested in aqua regia and their metal concentrations were quantified by atomic absorption spectrometry. The concentrations of metals in dust from visual arts studios ranged from not detected (nd) to 91.5 mg kg−1 Cd, 4.5 to 540 mg kg−1 Pb, 0.10 to 1,100 mg kg−1 Cr, 0.50 to 1,150 mg kg−1 Ni, 10 to 15,600 mg kg−1 Cu, 0.5 to 146 mg kg−1 Co, 3.0 to 3,680 mg kg−1 Mn, 93.5 to 9,600 mg kg−1 Zn, and 853 to 237,000 mg kg−1 Fe. The degree of contamination of the dust particles by metals was assessed by making use of the contamination/pollution index, geoaccumulation index and enrichment factor. These indices suggested that dusts from these visual arts studios were impacted with Cd, Pb, Cu, and Zn. The hazard index (HI) and cancer risk values relating to adults’ exposure to metals in dust from these arts studios were within safe limits. Principal component analysis indicated that the sources of metal contamination in dust from these visual arts studios were related to inputs from constituents of the artist’s materials and vehicular emissions.
Extended master equation models for molecular communication networks
Creators: name: Chou, Chun Tung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We consider molecular communication networks consisting of transmitters and receivers distributed in a fluidic medium. In such networks, a transmitter sends one or more signalling molecules, which are diffused over the medium, to the receiver to realise the communication. In order to be able to engineer synthetic molecular communication networks, mathematical models for these networks are required. This paper proposes a new stochastic model for molecular communication networks called reaction-diffusion master equation with exogenous input (RDMEX). The key idea behind RDMEX is to model the transmitters as time series of signalling molecule counts, while diffusion in the medium and chemical reactions at the receivers are modelled as Markov processes using master equation. An advantage of RDMEX is that it can readily be used to model molecular communication networks with multiple transmitters and receivers. For the case where the reaction kinetics at the receivers is linear, we show how RDMEX can be used to determine the mean and covariance of the receiver output signals, and derive closed-form expressions for the mean receiver output signal of the RDMEX model. These closed-form expressions reveal that the output signal of a receiver can be affected by the presence of other receivers. Numerical examples are provided to demonstrate the properties of the model.
description: IEEE Transactions on Nanobioscience, 2013
title: Aggressive osteomyelitis in children – new insights
Creators: name: Murko, Jernej
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Acute
subject: Abscess delineation
subject: Ultrasound
subject: MR
subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the radiologic findings in aggressive forms of osteomyelitis caused by Panton-Valentine leucocidin-producing (PVL) strains of Staphylococcus aureus , primarily focusing on MRI . To outline other novelties in the diagnostic workup of...
title: Impact of Dual-Source Dual-Energy CT with Virtual Mono-Energetic+ Imaging on Pseudo-Enhancement of Complex Cystic Renal Masses – an in vitro study
Creators: name: Sivyer, Jonathon
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Abdomen
subject: CT
subject: Diagnostic procedure
subject: Artifacts

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The distinction between cystic and solid (surgical vs non-surgical) lesions visualised in CT is primarily made on the basis of whether the lesion enhances with contrast administration. A renal cystic lesion is considered enhancing when there is at...
A Geometrical Method of Decoupling
Creators: name: Baumgarten, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The computation of tunes and matched beam distributions are essential steps in the analysis of circular accelerators. If certain symmetries - like midplane symmetrie - are present, then it is possible to treat the betatron motion in the horizontal, the vertical plane and (under certain circumstances) the longitudinal motion separately using the well-known Courant-Snyder theory, or to apply transformations that have been described previously as for instance the method of Teng and Edwards. In a preceeding paper it has been shown that this method requires a modification for the treatment of isochronous cyclotrons with non-negligible space charge forces. Unfortunately the modification was numerically not as stable as desired and it was still unclear, if the extension would work for all thinkable cases. Hence a systematic derivation of a more general treatment seemed advisable. In a second paper the author suggested the use of real Dirac matrices as basic tools to coupled linear optics and gave a straightforward recipe to decouple positive definite Hamiltonians with imaginary eigenvalues. In this article this method is generalized and simplified in order to formulate a straightforward method to decouple Hamiltonian matrices with eigenvalues on the real and the imaginary axis. It is shown that this algebraic decoupling is closely related to a geometric "decoupling" by the orthogonalization of the vectors $\vec E$, $\vec B$ and $\vec P$, that were introduced with the so-called "electromechanical equivalence". We present a structure-preserving block-diagonalization of symplectic or Hamiltonian matrices, respectively. When used iteratively, the decoupling algorithm can also be applied to n-dimensional systems and requires ${\cal O}(n^2)$ iterations to converge to a given precision.
description: 13 pages, 1 figure
Ab initio theory of galvanomagnetic phenomena in ferromagnetic metals and disordered alloys
Creators: name: Turek, Ilja
name: Kudrnovsky, Josef
name: Drchal, Vaclav
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an ab initio theory of transport quantities of metallic ferromagnets developed in the framework of the fully relativistic tight-binding linear muffin-tin orbital method. The approach is based on the Kubo-Streda formula for the conductivity tensor, on the coherent potential approximation for random alloys, and on the concept of interatomic electron transport. The developed formalism is applied to pure 3d transition metals (Fe, Co, Ni) and to random Ni-based ferromagnetic alloys (Ni-Fe, Ni-Co, Ni-Mn). High values of the anisotropic magnetoresistance (AMR), found for Ni-rich alloys, are explained by a negligible disorder in the majority spin channel while a change of the sign of the anomalous Hall effect (AHE) on alloying is interpreted as a band-filling effect without a direct relation to the high AMR. The influence of disorder on the AHE in concentrated alloys is investigated as well.
description: 11 pages, 4 figures, extended Section III (accepted in Phys. Rev. B)
Captain Isaac Sayre Barn: Historic Structure Report
Creators: name: Hefner, Robert
name: Hefner, Robert
Publisher: name: The Village of East Hampton
Year: 2012
Subjects: Architectural & site components
Architectural drawings
Structural drawings
Structures
Buildings
Barns

description: This is a historic structure report of Captain Isaac Sayre's Barn done by Robert Hefner for Southampton Historical Museums and Research Center. This report was loaned to the Long Island Collection for Digitization purposes.
title: I-Refer appropriately for Abdominal X-rays from the Emergency Department, or do I?
Creators: name: Godkin, Owen
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Workforce
subject: Quality assurance
subject: Acute
subject: Education
subject: Audit and standards
subject: Conventional radiography
subject: Urinary Tract / Bladder
subject: Emergency
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Introduction One abdominal x-ray (AXR) has an equivalent dose of radiation as 35 chest x-rays. I-Refer guidelines attain a strict criteria for the indication of plain abdominal x-rays. The intended outcome of this audit is the decrease the...
title: Integration von Geflüchteten darf in Krisenzeiten nicht in Hintergrund rücken: Interview
Creators: name: Cardozo Silva, Adriana
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022

description: DIW Wochenbericht, 89 (2022), 18, S. 269
title: Patient perceptions of radiographer communication skills in MRI examinations
Creators: name: Lesyuk, Oksana
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Radiographers
subject: Professional issues
subject: MR
subject: Health policy and practice
subject: Physiological studies
subject: Technical aspects
subject: Outcomes
subject: Patterns of Care
subject: Quality assurance

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The aim of this study was to evaluatepatient’s perceptions regarding the performance of the radiographersin terms of interpersonal communication skills in MRI examinations. Moreover, also seeks to strengthen the idea that the patient is the...
Quaternionic and Hyper-Kähler Metrics from Generalized Sigma Models
Creators: name: Afonso, V. I.
name: Bazeia, D.
name: Cirilo-Lombardo, D. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The problem of finding new metrics of interest, in the context of SUGRA, is reduced to two stages: first, solving a generalized BPS sigma model with full quaternionic structure proposed by the authors and, second, constructing the hyper-Kähler metric, or suitable deformations of this condition, taking advantage of the correspondence between the quaternionic left-regular potential and the hyper-Kähler metric of the target space. As illustration, new solutions are obtained using generalized Q-sigma model for Wess-Zumino type superpotentials. Explicit solutions analog to the Berger's sphere and Abraham-Townsend type are given and generalizations of 4-dimensional quaternionic metrics, product of complex ones, are shown and discussed.
description: 8 pages, two column, no figures
Exploring Danube tributary valley formation at the Gerecse Hills (Hungary) with landscape evolution models - supplementary materials
Creators: name: Gerzsenyi, Dávid
name: Albert, Gáspár
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370401
subject: Computational modelling and simulation in earth sciences
classificationCode: 370403
subject: Geoscience data visualisation

description: Supplementary materials for the research article titled "Exploring Danube tributary valley formation at the Gerecse Hills (Hungary) with landscape evolution models" submitted to Quaternary Research.Contents:Supplementary material 1: Gerecse_LEM_2023_model_run_results.xlsx
Spreadsheet containing the model input parameters, output metrics, and file names of the output data and plots.Supplementary material 2: Gerecse_LEM_2023_plots.zip
Additional figures visualizing the results of each model run. Maps of the model domain, maps of the drainage basins, profile plots, upper layer thickness histograms.Supplementary material 3: Gerecse_LEM_2023_d2_15_model_run_videos.zip
Animated timelapse maps of the elevation, slope, and upper layer thickness of a selected model (d2_15) where the best K parameter pair (Klower=7.5*10-6 and Kupper=1.25*10-5) was used.Article abstract:The northern foreland of the Gerecse Hills acted as a boundary zone between the Danube River and the adjacent mountain range during the past 2.94 million years. In addition to the gravel and sandy sediments of the river terraces, freshwater limestone and loess deposits also formed. The eleven known river terraces significantly eroded during the Gerecse’s uplift as the tributary valleys draining into the Danube formed. To understand the surface evolution, we employed numerical landscape evolution models (LEM) with varying water erodibility parameters (K) and identified metrics crucial for assessing model suitability. Well-performing models were identified by a parameter search to determine how closely they matched the reference watersheds in terms of area, profile length, relief, hypsometric integral, degree of loess cover, and drainage density. Forward modelling with the selected erodibility parameters validated the setup by predicting average erosion rates for the next 10,000 years comparable to present-day rates in nearby areas. The model also forecasted substantial erosion of thick loess cover over the next 110,000 years. While the model generalizes surface processes and geological events influencing landscape evolution, it provides insights into the geological history of Gerecse by allowing testing different scenarios.
title: Geflüchtete in Deutschland fühlten sich in der Corona-Pandemie stärker diskriminiert als zuvor
Creators: name: Cardozo Silva, Adriana
name: Prömel, Christopher
name: Zinn, Sabine
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2022
Subjects: subject: A14 Sociology of Economics
subject: J15 Economics of Minorities, Races, and Immigrants; Non-labor Discrimination
subject: J71 Labor Discrimination
subject: Z13 Economic Sociology; Economic Anthropology; Social and Economic Stratification
subject: Perceived Discrimination
subject: Refugees
subject: Integration

description: Geflüchtete in Deutschland fühlen sich in verschiedenen Lebensbereichen aufgrund ihrer Herkunft diskriminiert. Dies kann ihre Integration nachhaltig beeinträchtigen. Dieser Bericht analysiert auf Basis der IAB-BAMF-SOEP-Befragung, inwieweit sie Benachteiligungen auf dem Arbeitsmarkt, in Bildungseinrichtungen, auf dem Wohnungsmarkt, gegenüber öffentlichen Institutionen und im Alltag wahrnehmen. Die Ergebnisse zeigen, dass die wahrgenommene Diskriminierung in den Jahren 2019 und 2020 in allen untersuchten Bereichen zugenommen hat, insbesondere bei der Arbeitssuche und in Bildungseinrichtungen. Geflüchtete, die in Ostdeutschland leben, jünger als 40 Jahre sind oder schlechtere Sprachkenntnisse aufweisen, und erwerbstätige Frauen fühlten sich 2019 stärker benachteiligt als andere Geflüchtetengruppen. Die Zunahme der wahrgenommenen Diskriminierung hängt sehr wahrscheinlich mit den abrupten Veränderungen auf dem Arbeitsmarkt sowie mit der Abschaffung wichtiger Integrationsmaßnahmen im Zuge der Corona-Pandemie zusammen. Daher ist es unabdingbar, Integrationsmaßnahmen, die durch die Pandemie unterbrochen oder eingestellt wurden (wie Sprach- und Integrationskurse), so schnell wie möglich wieder vollumfänglich aufzunehmen, um der Ausgrenzung und Marginalisierung von Geflüchteten entgegenzuwirken.
description: DIW Wochenbericht, 89 (2022), 18, S. 259-268
Isosurface stuffing improved: acute lattices and feature matching
Creators: name: Doran, Crawford
Publisher: name: University of British Columbia
Year: 2013

description: We present two improvements to Labelle and Shewchuk's isosurface stuffing algorithm for tetrahedral mesh generation. First, we use an acute tetrahedral lattice known as the A15 lattice in place of the original BCC lattice. In the uniform case, the higher-quality tetrahedra of A15 significantly improve the quality of the resulting mesh; BCC remains the best choice for adaptive meshes, as the A15-based adaptive lattices we have designed are not able to outperform it. Second, we extend the method to match features such as corners and sharp creases. Feature lines and points are matched by snapping nearby mesh vertices onto them. A final vertex smoothing pass mitigates the loss of mesh quality due to feature-matching. Our experiments show that for input surfaces with reasonable crease angles, this is generally sufficient to restore mesh quality.
title: Eye lens dose in head CT examinations: Evaluation of different methods through the use of gantry angulation and barium shields
Creators: name: Reis, Mónica
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Occupational / Environmental hazards
subject: Education and training
subject: Dosimetric comparison
subject: Safety
subject: Radiation safety
subject: Dosimetry
subject: CT
subject: Radioprotection / Radiation dose
subject: Radiation physics
subject: Professional issues

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of this study was to evaluate the effect of gantry angulation, scanning techniques (spiral vs sequential) and barium eye shielding on radiation dose to the eye lens during head CT...
Lehrkräfte im Sachunterricht zwischen Anspruch und Wirklichkeit
Unterschätzte Potentiale Politischer Bildung in der Grundschule
Creators: name: Bade, Gesine
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: 370
subject: Sachunterricht
subject: Lehrer
subject: Lehrerin
subject: Grundschule
subject: Politische Bildung

description: Zugleich: Dissertation, Universität Kassel, 2021. Die Dissertation wurde unter dem Titel "Politische Bildung im Sachunterricht. Erfahrungen und Vorstellungen von Grundschullehrkräften" veröffentlicht. Tag der Disputation: 24.11.2021
description: Gefördert durch den Publikationsfonds der Universität Kassel
title: The role of CT perfusion in therapeutic decision making in patients with acute stroke
Creators: name: Zdjelar, Adrian
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neuroradiology brain
subject: CT
subject: CT-Angiography
subject: Diagnostic procedure
subject: Ischaemia / Infarction

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: CT perfusion (CTP) is an important diagnostic tool in acute ischemic stroke (AIS). We investigated if CTP may help evaluation of clinical outcome of patients who undergo intravenous (IV) thrombolysis and those who don't and if it may guide...