cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Development and validation of hybrid grid-based and grid-free computational VπLES method
Creators: name: Samarbakhsh, Sina
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 620 Engineering & allied operations

description: A novel hybrid grid-based and grid-free computational method which is called VπLES is proposed and validated over several benchmark cases. VπLES splits the flow structures into large scale ones, resolved on the grid (Eulerian approach), and small scale ones, represented by vortex particles (Lagrangian approach). Two transport equations for grid and particle solution are derived which are dynamically coupled through the existence of coupling terms in each of them. The method resembles LES with an effort to directly reproduce the subgrid motion at least in the statistical sense.
Cosmic censorship and stationary states of half-spin particles in the field of Reissner-Nordstroem naked singularity
Creators: name: Gorbatenko, M. V.
name: Neznamov, V. P.
name: Popov, E. Yu.
name: Safronov, I. I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper explores quantum mechanics of half-spin particle motion in the field of Reissner-Nordstroem (RN) naked singularity. It is shown that for any quantum mechanical Dirac particle, irrespective of availability and sign of its electrical charge, the RN naked singularity is separated by an infinitely high positive potential barrier. With like charges of a particle and the source of the RN naked singularity, near the origin there exists the second completely impenetrable potential barrier. It has been proved that in the field of the RN naked singularity, bound states of half-spin particles can exist. The conditions for appearance of such states were revealed and computations were performed to find energy eigenvalues and eigenfunctions.
description: 20 pages, 3 figures
Perceived Similarity and Intergroup Attitudes: A Look between Different Groups in China
Creators: name: AN, YING
name: Roth, Jenny
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: This open-ended pre-registration is a part of Perceived Similarity and Intergroup Attitudes: A Look between Different Groups in China, we want to note the following changes we did with data collection: Due to the time constraint, we have to stop the data collection process on May 19th , 2021 (it was August 1st in our first pre-registration). In this sense, the data collection will lasts for 4 weeks from April 21st, 2021.
title: Trans-caval Endoleak Embolization (TCEE) of Type I and II Endoleaks Occurring after Endovascular Abdominal Aortic Aneurysm Repair (EVAR)
Creators: name: Chiaravalloti, Antonio
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Arteries / Aorta
subject: Interventional vascular
subject: CT-Angiography
subject: Fluoroscopy
subject: Embolisation
subject: Catheters
subject: Stents
subject: Aneurysms

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: The endovascular repair of abdominal aortic aneurysms (EVAR) may be complicated by theincomplete exclusion of blood flow to the aneurysm sac. This complication has beendefined as endoleak by White et al (1). The incomplete sealing off of the graft...
Beitrag zur Identifikation des Manövrierverhaltens von Wasserfahrzeugen für den Entwurf von Assistenzfunktionen
Creators: name: Hahn, Tobias
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 600 Technology (Applied sciences)
subject: 620 Engineering & allied operations
subject: 621.3 Electrical Engineering, Electronics

description: Die Arbeit befasst sich mit dem Entwurf von Assistenzfunktionen zur Vereinfachung und Verbesserung der Schiffsführung von Wasserfahrzeugen. Es wird ein Verfahren zur Identifikation des Manövrierverhaltens dargestellt. Der Schwerpunkt liegt auf der Entwicklung einer Methode zur experimentellen Parameterschätzung bei Nutzung vorhandener Daten des regulären Betriebs. Die algorithmische Umsetzung umfasst die Parameterschätzverfahren und die darauf aufbauenden Reglerentwurfsverfahren.
Dark Nudges in Alcohol Industry-Funded Responsible Drinking Campaigns
Creators: name: Lewin, Joel
name: Davies, Emma
name: Butterworth, Francesca
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This is an experimental study examining how dark nudges in alcohol-industry funded responsible drinking campaigns affect drinking intentions.
Time evolution of the mutual information between disjoint regions in the Universe
Creators: name: Pandey, Biswajit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the time evolution of the mutual information between the mass distributions in spatially separated but casually connected regions in an expanding universe. The evolution of the mutual information is primarily determined by the configuration entropy rate which depends on the dynamics of the expansion and the growth of the density perturbations. The joint entropy between the distributions from the two regions plays a negligible role in such evolution. The mutual information decreases with time in a matter dominated Universe whereas it stays constant in a $Λ$-dominated Universe. The $Λ$CDM model and some other models of dark energy predict a minimum in the mutual information beyond which the dark energy dominates the dynamics of the Universe. The mutual information may have deeper connections to the dark energy and the accelerated expansion of the universe.
description: 9 pages, 1 figure, Published in Entropy
title: Percutaneous radiofrequency ablation treatment in pelvic recurrence of rectal cancer
Creators: name: Pusceddu, Claudio
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Colon
subject: Interventional non-vascular
subject: CT
subject: Percutaneous
subject: PET-CT
subject: Ablation procedures
subject: Radiation therapy / Oncology
subject: Chemotherapy
subject: Neoplasia
subject: Metastases
subject: Abscess

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: The aim of our study was to evaluate retrospectively the technical feasibility, safety and efficacy of radiofrequency thermal ablation (RFA) in the treatment of recurrent painful rectal cancer not resectable and no longer susceptible to radiotherapy...
null Pädagogischen Lesungen im Rahmen der DDR-Lehrer*innenweiterbildung, Teil II
Pedagogical Readings in the context of the GDR teachers` further education, part II
Creators: name: Linström, Felix
Publisher: name: Universität Rostock, Arbeitsstelle Pädagogische Lesungen
Year: 2022
Subjects: subject: 370 Education
subject: 943 General history of Europe Central Europe Germany

description: Im Zuge der Erschließung der Pädagogischen Lesungen als bildungshistorische Quelle für die DDR-Forschung wurden 23 Zeitzeug*inneninterviews geführt, die unter anderem zur Rekonstruktion der Entstehungsschritte des Formats herangezogen wurden (Koch & Koebe, 2021). Dabei schließt sich der vorliegende Text inhaltlich an den genannten Beitrag von Koch und Koebe (2021) an und untersucht die Umsetzung und Ausgestaltung des Entstehungsprozesses der Pädagogischen Lesungen. Im Unterschied dazu wird im folgenden Beitrag jedoch eine zeitgenössische Innenperspektive eingenommen, die sich aus der Analyse von Pädagogischen Lesungen ergibt, die die Optimierung des Weiterbildungsformats selbst fokussierten. So wird der Entstehungsprozess der Pädagogischen Lesungen rekonstruiert, wie er sich für die Protagonist*innen, sozusagen aus dem Blick der Fortbildner*innen, ergab. Aus der Sichtweise der Fortbildner*innen lassen sich auch dann wiederum Aussagen über die anschließende Verwertung der Pädagogischen Lesungen generieren.
A Home Transformed: Narratives of Home, Loss, Longing and the Miniature from Portsmouth Island, North Carolina
Creators: name: Taylor, Stephen Jesse
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: A Home Transformed addresses experiential oral narratives of homecoming, loss and longing on Portsmouth, a formerly-inhabited island on the Outer Banks of North Carolina now part of Cape Lookout National Seashore. By comparing such narratives to objects from material culture embodying a desire for the past, the exotic, and the beloved - including the hand-drawn miniature and the photograph - this thesis links material metaphors and spatial understanding with speech. I explore the intersection of memory and present experience in stories embodied in objects and landscapes, drawing on a repertory of examples from gravestones to wooden boats to land itself. Portsmouth (only superficially abandoned) I define as a home ground, symbolically cultivated, ornamented and maintained via story. A Home Transformed incorporates interviews with several former residents of Portsmouth Island, National Park Service volunteers, and others who have participated in the literal and figurative event of homecoming.
title: Percutaneous cryoablation of lung tumors
Creators: name: Pusceddu, Claudio
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Lung
subject: Computer applications
subject: Respiratory system
subject: CT
subject: Percutaneous
subject: Ablation procedures
subject: Neoplasia

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Cryoablation is an highly innovative technology, already experimented successfully in the treatment of malignant kidney and prostate tumors. The aim of our study was to report our initial experience with CT-guided percutaneous cryoablation (PCA) in...
Three-dimensional super Yang-Mills with compressible quark matter
Creators: name: Faedo, Antón F.
name: Kundu, Arnab
name: Mateos, David
name: Pantelidou, Christiana
name: Tarrío, Javier
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the gravity dual of three-dimensional, $SU(N_{\textrm{c}})$ super Yang-Mills theory with $N_{\textrm{f}}$ flavors of dynamical quarks in the presence of a non-zero quark density $N_{\textrm{q}}$. The supergravity solutions include the backreaction of $N_{\textrm{c}}$ color D2-branes and $N_{\textrm{f}}$ flavor D6-branes with $N_{\textrm{q}}$ units of electric flux on their worldvolume. For massless quarks, the solutions depend non-trivially only on the dimensionless combination $ρ=N_{\textrm{c}}^2 N_{\textrm{q}} / λ^2 N_{\textrm{f}}^4$, with $λ=g_{\textrm{YM}}^2 N_{\textrm{c}}$ the 't Hooft coupling, and describe renormalization group flows between the super Yang-Mills theory in the ultraviolet and a non-relativistic theory in the infrared. The latter is dual to a hyperscaling-violating, Lifshitz-like geometry with dynamical and hyperscaling-violating exponents $z=5$ and $θ=1$, respectively. If $ρ\ll 1$ then at intermediate energies there is also an approximate AdS$_4$ region, dual to a conformal Chern-Simons-Matter theory, in which the flow exhibits quasi-conformal dynamics. At zero temperature we compute the chemical potential and the equation of state and extract the speed of sound. At low temperature we compute the entropy density and extract the number of low-energy degrees of freedom. For quarks of non-zero mass $M_{\textrm{q}}$ the physics depends non-trivially on $ρ$ and $M_{\textrm{q}} N_{\textrm{c}}/λN_{\textrm{f}}$.
description: 32 pages plus appendices, 11 figures
Defining the role of human endogenous retroviruses in pluripotency of colorectal cancer cells
Creators: name: Shokraie, Fatemeh
Publisher: name: Universität Rostock
Year: 2021
Subjects: subject: 570 Life science
subject: 610 Medical sciences Medicine

description: The mortality rate in colorectal cancer patients is still high. One of the main consequences of treatment failure is tumor relapse. It is presumed that cancer stem cells (CSCs) are the cause of cancer recurrence and metastasis due to their cellular plasticity. These cells are capable to evade the immune system and endure nutritional deprivation, resulting in CSCs survival after treatment and restoring tumor growth after cancer cell elimination. Thus, precise characterization, successful targeting, and eradication of CSCs can improve cancer treatment.
title: Feasibility of a low-dose contrast-enhanced cardiovascular magnetic resonance (CMR) protocol using a high-relaxivity contrast agent in the pre-procedural evaluation of patients undergoing transcatheter aortic valve implantation (TAVI): comparison with multidetector computed tomography (MDCTA)
Creators: name: Iacucci, Ilaria
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Toxicity
subject: Contrast agent-intravenous
subject: MR-Angiography
subject: MR
subject: CT-Angiography
subject: Cardiovascular system
subject: Cardiac

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: TAVI has emerged as a valuable alternative to surgical aortic valve replacement in a target population of high surgical risk patients, often suffering from impaired/border-line renal function. In fact, aortic valve replacement is not performed in...
Detection of CI line emission from the detached CO shell of the AGB star R Sculptoris
Creators: name: Olofsson, Hans
name: Bergman, Per
name: Lindqvist, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars on the asymptotic giant branch (AGB) lose substantial amounts of matter, to the extent that they are important for the chemical evolution of, and dust production in, the universe. The mass loss is believed to increase gradually with age on the AGB, but it may also occur in the form of bursts, possibly related to the thermal pulsing phenomenon. Detached, geometrically thin, CO shells around carbon stars are good signposts of brief and intense mass ejection. We aim to put further constraints on the physical properties of detached CO shells around AGB stars. The photodissociation of CO and other carbon-bearing species in the shells leads to the possibility of detecting lines from neutral carbon. We have therefore searched for the CI($^3P_1-\,^3P_0$) line at 492 GHz towards two carbon stars, S Sct and R Scl, with detached CO shells of different ages, about 8000 and 2300 years, respectively. The CI($^3P_1-\,^3P_0$) line was detected towards R Scl. The line intensity is dominated by emission from the detached shell. The detection is at a level consistent with the neutral carbon coming from the full photodissociation of all species except CO, and with only limited photoionisation of carbon. The best fit to the observed $^{12}$CO and $^{13}$CO line intensities, assuming a homogeneous shell, is obtained for a shell mass of about 0.002 $M_\odot$, a temperature of about 100 K, and a CO abundance with respect to H$_2$ of 10$^{-3}$. The estimated CI/CO abundance ratio is about 0.3 for the best-fit model. However, a number of arguments point in the direction of a clumpy medium, and a viable interpretation of the data within such a context is provided.
Deconfinement Phase Transition with External Magnetic Field in Friedberg-Lee Model
Creators: name: Mao, Shijun
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The deconfinement phase transition with external magnetic field is investigated in the Friedberg-Lee model. In the frame of functional renormalization group, we extend the often used potential expansion method for continuous phase transitions to the first-order phase transition in the model. By solving the flow equations we find that, the magnetic field displays a catalysis effect and it becomes more difficult to break through the confinement in hot and dense medium.
description: 5 pages,4 figures,2 tables
title: Virtual Histology-Intravascular Ultrasound as a diagnostic alternative for morphological characterization of carotid plaque: comparison with histology and High-Resolution Magnetic Resonance findings
Creators: name: Chiaravalloti, Antonio
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: CNS
subject: Vascular
subject: Head and neck
subject: CT-Angiography
subject: MR
subject: Experimental
subject: Catheters
subject: Angioplasty
subject: Stents
subject: Arteriosclerosis

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Stroke is the third most common death cause and one of the most common cause of long-term disability in the western world [1]. Carotid plaque morphology is, more than the stenosis degree, the main predictor of cerebro-vascular accidents. Presence of...
מבוא ושיטה
Creators: name: Baloum, Basma
name: Yahia, Lana
name: yahia, rania
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: הרשמה מראש פסיכולוגיה ניסויית

description: ההרשמה מראש למחקר ״השפעת השוואות חברתיות ואיום הסטריאוטיפ על הערך העצמי״, במסגרת קורס פסיכולוגיה ניסויית
Hyperspherical approach to the three-bosons problem in 2D with a magnetic field
Creators: name: Rittenhouse, Seth T.
name: Wray, Andrew
name: Johnson, B. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We examine a system of three-bosons confined to two dimensions in the presence of a perpendicular magnetic field within the framework of the adiabatic hyperspherical method. For the case of zero-range, regularized pseudo-potential interactions, we find that the system is nearly separable in hyperspherical coordinates and that, away from a set of narrow avoided crossings, the full energy eigenspectrum as a function of the 2D s-wave scattering length is well described by ignoring coupling between adiabatic hyperradial potentials. In the case of weak attractive or repulsive interactions, we find the lowest three-body energy states exhibit even/odd parity oscillations as a function of total internal 2D angular momentum and that for weak repulsive interactions, the universal lowest energy interacting state has an internal angular momentum of $M=3$. With the inclusion of repulsive higher angular momentum we surmise that the origin of a set of ``magic number'' states (states with anomalously low energy) might emerge as the result of a combination of even/odd parity oscillations and the pattern of degeneracy in the non-interacting lowest Landau level states.
description: 12 pages, 8 figures
Polariton resonances for ultra-strong coupling cavity optomechanics in GaAs/AlAs multiple quantum wells
Creators: name: Jusserand, B.
name: Poddubny, A.
name: Poshakinskiy, A.
name: Fainstein, A.
name: Lemaitre, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Polariton-mediated light-sound interaction is investigated through resonant Brillouin experiments in GaAs/AlAs multiple-quantum wells. Photoelastic coupling enhancement at exciton-polariton resonance reaches 105 at 30 K as compared to a typical bulk solid room temperature transparency value. When applied to GaAs based cavity optomechanical nanodevices, this result opens the path to huge displacement sensitivities and to novel ultrastrong-coupling cavity phenomena with optomechanical couplings g0 in the range of 100 THz.
title: ENDOMETRIOSIS, What Radiologists Should Know
Creators: name: Alvarez Vazquez, Ana
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Imaging sequences
subject: Contrast agent-intravenous
subject: Colonography MR
subject: MR
subject: Pelvis
subject: Genital / Reproductive system female
subject: Gastrointestinal tract
subject: Inflammation
subject: Blood

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: Review the different types of endometriosis, superficial and deeply infiltrating. Determining optimal protocols for evaluating endometriosis with MRI imaging, establishing the utility of the classic sequences, MRI enterography or uro-MRI, the use of...
Higher-order relativistic corrections to gluon fragmentation into spin-triplet S-wave quarkonium
Creators: name: Bodwin, Geoffrey T.
name: Kim, U-Rae
name: Lee, Jungil
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the relative-order-v^4 contribution to gluon fragmentation into quarkonium in the 3S1 color-singlet channel, using the nonrelativistic QCD (NRQCD) factorization approach. The QCD fragmentation process contains infrared divergences that produce single and double poles in epsilon in 4-2epsilon dimensions. We devise subtractions that isolate the pole contributions, which ultimately are absorbed into long-distance NRQCD matrix elements in the NRQCD matching procedure. The matching procedure involves two-loop renormalizations of the NRQCD operators. The subtractions are integrated over the phase space analytically in 4-2epsilon dimensions, and the remainder is integrated over the phase-space numerically. We find that the order-v^4 contribution is enhanced relative to the order-v^0 contribution. However, the order-v^4 contribution is not important numerically at the current level of precision of quarkonium-hadroproduction phenomenology. We also estimate the contribution to hadroproduction from gluon fragmentation into quarkonium in the 3PJ color-octet channel and find that it is significant in comparison to the complete next-to-leading-order-in-alpha_s contribution in that channel.
description: 41 pages, 8 figures, 3 tables, minor corrections, version published in JHEP. Eq. (6.3) corrected. Incorporates erratum JHEP 07 (2023) 170 to JHEP 11 (2012) 020
The Ordinal Count Factor Model: An Improved Latent Variable Model For Ordinal Count Items
Creators: name: Markiewitz, Nathan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Much of the measurement of human behaviors relies on the reporting of a rate of behavior. Common measures use items that ask participants to select between given intervals of counts—these items are called ordinal count items. I present the ordinal count factor model (OCFM) as a latent variable model for ordinal count item responses in a single population and across multiple groups. OCFMs represent the underlying latent response as a count, instead of the logistic or normal distribution used by current latent variable models for ordinal data. In addition to representing the data generating process more faithfully, OCFMs allow for inferences on the metric of the underlying rate of behavior. I evaluate the OCFM through two empirical examples using the Rutgers Alcohol Problem Index. These studies demonstrate that OCFMs may fit better than standard models, produce more precise factor scores, and may be fit using widely available, open-source software.
The influence of sexual objectification and marital status on state self-objectification among men
Creators: name: Morad, Omer
name: Segal, Gaya
name: Schechtman, Alma
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This is a pre-registration for our research, as part of an experimental psychology course.
title: Neurodegenerative diseases: advances in functional neuroimaging
Creators: name: Jimenez De La Peña, Mar
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Neuroradiology brain
subject: MR-Functional imaging
subject: Imaging sequences
subject: Dementia

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: Degenerative brain diseases occasionally show some MR imaging findings that can lead to a definitive diagnosis. Advanced functional imaging (MR-spectroscopy , diffusion tensor imaging , functional MR and PET-FDG) provide useful information for an...
Magnetic dipole moments for composite dark matter
Creators: name: Aranda, Alfredo
name: Barajas, Luis
name: Cembranos, Jose A. R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study neutral dark matter candidates with a nonzero magnetic dipole moment. We assume that they are composite states of new fermions related to the strong phase of a new gauge interaction. In particular, invoking a dark flavor symmetry, we analyze the composition structure of viable candidates depending on the assignations of hypercharge and the multiplets associated to the fundamental constituents of the extended sector. We determine the magnetic dipole moments for the neutral composite states in terms of their constituents masses.
description: 22 pages, 3 figures
title: The CT halo sign in pulmonary metastases following adoptive cell therapy for metastatic melanoma: possible clinical significance
Creators: name: Shrot, Shai
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Oncology
subject: Lung
subject: CT
subject: Chemotherapy
subject: Staging
subject: Metastases
subject: Neoplasia

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Melanoma appears to be unique among human cancers because of its ability to induce significant lymphocyte production with anti-tumor activity as it grows, specific for autologous tumor–associated antigens(1;2). These tumor infiltrating lymphocytes...
title: The compartment-based approach in spinal imaging
Creators: name: Grech, Reuben
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Neuroradiology spine
subject: Neuroradiology spine
subject: MR
subject: CT
subject: Education
subject: Structured reporting
subject: Education and training

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: To demonstrate how the anatomical spinal compartment affected by the pathological process can aid in narrowing the differential diagnosis and hence facilitate radiological...
Reduction of Ion Heating During Magnetic Reconnection by Large-Scale Effective Potentials
Creators: name: Haggerty, C. C.
name: Shay, M. A.
name: Drake, J. F.
name: Phan, T. D.
name: McHugh, C. T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The physical processes that control the partition of released magnetic energy between electrons and ions during reconnection is explored through particle-in-cell simulations and analytical techniques. We demonstrate that the development of a large-scale parallel electric field and its associated potential controls the relative heating of electrons and ions. The potential develops to restrain heated exhaust electrons and enhances their heating by confining electrons in the region where magnetic energy is released. Simultaneously the potential slows ions entering the exhaust below the Alfvénic speed expected from the traditional counterstreaming picture of ion heating. Unexpectedly, the magnitude of the potential and therefore the relative partition of energy between electrons and ions is not a constant but rather depends on the upstream parameters and specifically the upstream electron normalized temperature (electron beta). These findings suggest that the fraction of magnetic energy converted into the total thermal energy may be independent of upstream parameters.
Fluorine-19 (19F) Magnetic Resonance Imaging of Pulmonary Ventilation, Cell Migration, and Inflammation
Creators: name: Akinnagbe-Zusterzeel, Esther
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Conventional 1H magnetic resonance imaging (MRI) has long been used in a variety of clinical applications. Among other advantages, MRI lacks ionizing radiation while still providing high resolution images with significant soft-tissue contrast. Advances in coil design and pulse sequencing have allowed for the adaptation of clinical scanners to fluorine-19 based MRI (19F MRI). Well-understood to be inert and non-toxic, many commercially available 19F compounds can be introduced into subjects as tracing agents. Resulting images have high signal-to-noise ratios (SNR) due to minimal intrinsic 19F signal; any signal recorded originated from the introduced agent. 19F MRI presents several new opportunities to improve and create applications of an already versatile imaging modality. Pulmonary Imaging As the need to understand the physiology of abnormal pulmonary conditions grows, so does the demand for quantitative lung function imaging methods. The use of exogenous 19F gas along with improved pulse sequencing and gradient hardware has improved the once low-quality lung MR images caused by low water molecule density in lung tissue. This study aimed to demonstrate pulmonary ventilation imaging in healthy controls and cystic fibrosis (CF) patients using 19F MRI to study ventilation kinetics. 19F MR images of twelve adult subjects performing respiratory exercises were acquired using a Siemens TIM Trio 3 Tesla scanner following spirometry. Ventilation kinetics within the lung space were computed by fitting dynamic 19F signal intensity values to a six-parameter fit model. Statistical analysis of ventilation kinetic between groups revealed that CF lungs required significantly more time to fill and showed ventilation defects. 19F imaging presents an inexpensive method of quantitatively measuring lung function in both healthy and affected populations, creating the opportunity to test treatment efficacy of various pulmonary disease as well as structural and physiological lung measurements. Cell Tracking One emerging application of 19F MRI is cell tracking using perfluorocarbon probes (PFC). Human and murine cells were labeled with the PFC probe to explore feasibility of 19F MRI cell tracking and inflammatory response imaging in a CF cell model and murine Parkinson’s disease (PD) model. Studies validated the uptake of the labeling agent by all cell types, showing minimal decrease in cell survival rates. 19F NMR and MRI techniques were employed to analyze loading efficiency and for cell quantification in vivo. We demonstrate preliminary imaging data of fluorine-19 gas and compounds suitable for pulmonary imaging and cell tracking. High signal to noise ratios are achievable with small animal imaging MR scanners as well as conventional 3T human systems with high bandwidth amplifiers.
De la sociologie à l'engagement : étude du nationalisme de Fernand Dumont
Creators: name: Gauvin, Nicolas
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Fernand Dumont
nationalisme

description: Cette thèse aborde le rapport particulier qu’entretiennent activité intellectuelle et engagement nationaliste chez le sociologue québécois Fernand Dumont. À partir de la théorie dumontienne de la culture, cette thèse démontre que malgré les modalités qui leur sont propres, engagement politique et travail intellectuel se rejoignent chez Fernand Dumont, car tous deux sont des efforts de réflexivité relativement similaires. Tous deux sont, pour reprendre ses propres termes, des cultures secondes dont la finalité et d’agir sur la culture première, c’est-à-dire les pratiques vécues en société. Le travail intellectuel de Dumont, plus particulièrement ses travaux sur la question nationale, rejoint ainsi son engagement nationaliste notamment parce qu’ils affichent une seule et même interprétation du devenir de la société québécoise.
Insecurity of a relativistic quantum commitment scheme
Creators: name: He, Guang Ping
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a cheating strategy to a relativistic quantum commitment scheme [Sci Rep 2014;4:6774] which was claimed to be unconditionally secure. It is shown that the sender Alice can cheat successfully with probability 100%, thus disproving the security claim.
description: arXiv admin note: Title of previous version was: Comment on "Unconditionally secure commitment in position-based quantum cryptography"
title: Role of MRI imaging in uncommon spinal lesions with usual presentations : Case series of 50 patients.
Creators: name: Jain, Mansi
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Musculoskeletal spine
subject: MR
subject: Diagnostic procedure
subject: Neoplasia
subject: Arteriovenous malformations
subject: Infection

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: After reading this article the reader will be able to: Recognise the red flag signs of uncommon but dreadful spinal pathologies and evaluate for the cause using MRI and its modified sequences as primary diagnositc tool in a systematic approach. List...
Impact of COVID-19 pandemic on diet behaviour among UK adults: a longitudinal analysis of data from the HEBECO study
Creators: name: Herbec, Aleksandra
name: Dicken, Samuel
name: Shahab, Lion
name: Kale, Dimitra
name: Mitchell, John
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: COVID
subject: COVID-19
subject: Diet
subject: Dietary behaviours
subject: fruit
subject: Health behaviours
subject: Snacking
subject: ultra-processed food
subject: vegetables

description: Pre-registration (before conducting the data analysis) of the data analysis protocol (V3.0 10.05.2021) for the planned manuscript entitled: Impact of COVID-19 pandemic on diet behaviour among UK adults: a longitudinal analysis of data from the HEBECO study.
Unconditionally secure quantum coin flipping
Creators: name: He, Guang Ping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum coin flipping (QCF) is an essential primitive for quantum cryptography. Unconditionally secure strong QCF with an arbitrarily small bias was widely believed to be impossible. But basing on a problem which cannot be solved without quantum algorithm, here we propose such a QCF protocol, and show how it manages to evade all existing no-go proofs on QCF.
description: Very close to the published version
Multiple impacts of the COVID-19 pandemic and antimicrobial stewardship on antimicrobial resistance in nosocomial infections: an interrupted time series analysis
Creators: name: Li, Weibin
name: Yang, X
name: Liu, Chaojie
name: Liu, X
name: Shi, L
name: Zeng, Y
name: Xia, H
name: Li, J
name: Zhao, M
name: Yang, S
name: Li, X
name: Hu, B
name: Yang, Lianping
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4203
subject: Health services and systems
classificationCode: 320203
subject: Clinical microbiology
classificationCode: 4206
subject: Public health
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences
classificationCode: 3204
subject: Immunology
subject: FOS: Clinical medicine

description: Objectives: The emergency response to the COVID-19 pandemic may disrupt hospital management activities of antimicrobial resistance (AMR). This study aimed to determine the changing AMR trend over the period in China when stringent COVID-19 response measures were implemented. Methods: This retrospective study was conducted in a designated hospital for COVID-19 patients in Guangzhou, China from April 2018 to September 2021. The prevalence of 13 antimicrobial-resistant bacteria was compared before and after the COVID-19 responses through Chi-square tests. Interrupted time series (ITS) models on the weekly prevalence of AMR were established to determine the changing trend. Controlled ITS models were performed to compare the differences between subgroups. Results: A total of 10,134 isolates over 1,265 days were collected. And antimicrobial-resistant strains presented in 38.6% of the testing isolates. The weekly AMR prevalence decreased by 0.29 percentage point (95% CI [0.05–0.80]) after antimicrobial stewardship (AMS) policy, despite an increase in the prevalence of penicillin-resistant Streptococcus pneumoniae (from 0/43 to 15/43, p < 0.001), carbapenem-resistant Escherichia coli (from 20/1254 to 41/1184, p = 0.005), and carbapenem-resistant Klebsiella pneumoniae (from 93/889 to 114/828, p = 0.042). And the changing trend did not vary by gender (male vs. female), age (<65 vs. ≥65 years), service setting (outpatient vs. inpatient), care unit (ICU vs. non-ICU), the primary site of infection (Lung vs. others), and Gram type of bacteria (positive vs. negative). Conclusion: The response to COVID-19 did not lead to an increase in overall AMR; however, it appears that management strategy on the prudent use of antimicrobials likely contributed to a sizable long-term drop. The frequency of several multidrug-resistant bacteria continues to increase after the COVID-19 epidemic. It is crucial to continue to monitor AMR when COVID-19 cases have surged in China after the relaxation of restriction measures.
The prevalence of legal issues in Division I college athletics and how departments manage these issues
Creators: name: Mitchell, Catherine Elizabeth
Publisher: name: University of North Carolina at Chapel Hill
Year: 2014

description: Division I athletics departments often face legal matters and must manage these issues. This study conducted a survey of two populations, Division I athletics directors and general counsels, soliciting responses about how frequent athletics departments encounter various legal issues and the structure utilized to manage those issues. The survey also asked respondents to provide information on the positives and negatives of various management models. Previous research in this area focused on the presence of Juris Doctor degrees in athletics and looked at the advantages of hiring those with law degrees. An older study investigated the sources of legal counsel for departments, but was performed before the exponential growth in college athletics. This study furthered findings from previous studies, but specifically showed that university counsel is the most common legal resource for athletics departments. Furthermore, results indicated that athletics encounter a full list of legal issues with NCAA matters and contracts being more common.
title: Body jewellery and neo-artifacts: radiology perspective
Creators: name: Ramesh, Nagabathula
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Musculoskeletal soft tissue
subject: Soft tissues / Skin
subject: CT
subject: MR
subject: Ultrasound
subject: Education
subject: Instrumentation
subject: Artifacts
subject: Occupational / Environmental hazards

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: To present a Radiology perspective of body piercing/jewellery and the neo-artefacts and discuss the associated problems and possible...
title: Procedure to prevent adverse reactions in patients in treatment with metformin that receive yodinated contrast
Creators: name: Cozcolluela Cabrejas, Rosa
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Endocrine disorders
subject: Safety
subject: Diagnostic procedure
subject: Contrast agent-intravenous
subject: CT
subject: Kidney
subject: Contrast agents

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: To elaborate a procedure to control patients in treatment with metformin to whom contrast iodized is injected endovascular via, and to avoid possible adverse reactions, especially lactic...
title: Enhancement patterns in Neuroradiology
Creators: name: Grech, Reuben
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Neuroradiology brain
subject: Contrast agents
subject: MR
subject: CT
subject: Education
subject: Education and training

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: In this review we will try to demonstrate the various patterns of enhancement in neuroradiology and discuss how these can help in reaching a final...
title: Dynamic contrast-enhanced subtraction MR imaging in assessing enhancement patterns of intratesticular mass lesions
Creators: name: Tsili, Athina
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Neoplasia
subject: Contrast agent-intravenous
subject: MR
subject: Genital / Reproductive system male

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: MR imaging of the scrotum has been reported as an important alternative modality in imaging evaluation of scrotal diseases [1-14]. The advantages of the technique include a wide field of view and multiplanar capabilities, allowing simultaneous...
Sequential Specification Tests to Choose a Model: A Change-Point Approach
Creators: name: Sales, Adam C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Researchers faced with a sequence of candidate model specifications must often choose the best specification that does not violate a testable identification assumption. One option in this scenario is sequential specification tests: hypothesis tests of the identification assumption over the sequence. Borrowing an idea from the change-point literature, this paper shows how to use the distribution of p-values from sequential specification tests to estimate the point in the sequence where the identification assumption ceases to hold. Unlike current approaches, this method is robust to individual errant p-values and does not require choosing a test level or tuning parameter. This paper demonstrates the method's properties with a simulation study, and illustrates it by application to the problems of choosing a bandwidth in a regression discontinuity design while maintaining covariate balance and of choosing a lag order for a time series model.
description: Communications in Statistics - Theory and Methods (2023)
Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017
Subjects: subject: 530

description: Journal of high energy physics 1, 52 (2017).
description: A search for heavy neutral Higgs bosons and $Z^{\prime}$ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb$^{-1}$ from proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector at the LHC during 2015 and 2016. The heavy resonance is assumed to decay to $\tau^+\tau^-$ with at least one tau lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2-2.25 TeV for Higgs bosons and 0.2-4.0 TeV for $Z^{\prime}$ bosons. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in benchmark scenarios. In the context of the hMSSM scenario, the data exclude $\tan\beta > 1.0$ for $m_A$ = 0.25 TeV and $\tan\beta > 42$ for $m_A$ = 1.5 TeV at the 95% confidence level. For the Sequential Standard Model, $Z^{\prime}_\mathrm{SSM}$ with $m_{Z^{\prime}} < 2.42$ TeV is excluded at 95% confidence level, while $Z^{\prime}_\mathrm{NU}$ with $m_{Z^{\prime}} < 2.25$ TeV is excluded for the non-universal $G(221)$ model that exhibits enhanced couplings to third-generation fermions.
description: Published by Springer, Berlin
Impact of information presentation on interpretability of spatial hazard information: Lessons from a study in avalanche safety---Data and Code
Creators: name: Haegeli, Pascal
name: Fisher, Katie
name: Mair, Patrick
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Avalanche hazard
subject: Empirical testing
subject: Risk communication

description: Contains the code, data and analysis results for Fisher, K., Haegeli, P., and Mair, P.: Impact of information presentation on interpretability of spatial hazard information: Lessons from a study in avalanche safety, Submitted to Natural Hazards and Earth System Sciences on May 15, 2021.
Mechanismen der Kontaktaktivierung während einer Infektion mit Streptococcus pyogenes
Creators: name: Oehmcke-Hecht, Sonja
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 570 Life science
subject: 610 Medical sciences Medicine

description: Das humane Kontaktsystem aktiviert sowohl Blutgerinnung als auch Entzündung. Wie ich im Rahmen meiner Studien erstmalig gezeigt habe, kann die Aktivierung des Systems durch die Bakterien selbst als auch durch Wirtsstrukturen, die als Antwort auf die Bakterien freigesetzt werden, erfolgen. So unterstützt das Kontaktsystems während einer Infektion die Aktivierung der lokalen angeborenen Immunantwort. Andererseits haben pathogene Bakterien Mechanismen entwickelt Kontaktfaktoren zu aktivieren, was mit einer erhöhten Virulenz einhergeht.
Group membership moderates the process of making trust judgments based on facial cues
Creators: name: , ShangfengHan
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Trust is a foundation of interpersonal communication. Faces have a significant impact on trust judgments, and separate research demonstrates that group membership also influences trust judgments. However, it remains unclear whether and how group membership moderates the effect of face trustworthiness on trust judgments and investment decisions. In the present research, two experiments were conducted to explore the moderating effect of group membership (i.e., in-group vs. out-group) on perceptions of facial trustworthiness and trust judgments. Results showed that participants invested significantly more money on trials with trustworthy faces than trials with untrustworthy faces. Additionally, there was a significant interaction between group membership and facial trustworthiness; the investment difference between trustworthy faces and untrustworthy faces was greater for trials with in-group member faces than out-group member faces. These findings indicate that top-down and bottom-up cues jointly influence behavioral decisions.