cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Use of combined AI phase selection and AI motion correction to enhance coronary artery visualization in a high temporal resolution wide-detector CT system
Creators: name: Osborne, John
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiac
subject: CT
subject: CT-Angiography
subject: Image manipulation / Reconstruction
subject: Computer Applications-Detection, diagnosis
subject: Diagnostic procedure
subject: Technology assessment
subject: Arteriosclerosis

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: We evaluated the ability to enhance image quality with Artificial Intelligence (AI) technologies to choose both the best reconstruction phase (CardioXphase™) as well as AI-based motion correction (CardioCapture™) in patients not receiving...
Coarsening of Disordered Quantum Rotors under a Bias Voltage
Creators: name: Aron, Camille
name: Biroli, Giulio
name: Cugliandolo, Leticia F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We solve the dynamics of an ensemble of interacting rotors coupled to two leads at different chemical potential letting a current flow through the system and driving it out of equilibrium. We show that at low temperature the coarsening phase persists under the voltage drop up to a critical value of the applied potential that depends on the characteristics of the electron reservoirs. We discuss the properties of the critical surface in the temperature, voltage, strength of quantum fluctuations and coupling to the bath phase diagram. We analyze the coarsening regime finding, in particular, which features are essentially quantum mechanical and which are basically classical in nature. We demonstrate that the system evolves via the growth of a coherence length with the same time-dependence as in the classical limit, $R(t) \simeq t^{1/2}$ -- the scalar curvature driven universality class. We obtain the scaling function of the correlation function at late epochs in the coarsening regime and we prove that it coincides with the classical one once a prefactor that encodes the dependence on all the parameters is factorized. We derive a generic formula for the current flowing through the system and we show that, for this model, it rapidly approaches a constant that we compute.
description: 53 pages, 12 figures
La Estructura Cortical de la Cuenca del Golfo de Cariaco, Mediante el Análisis Sísmico de refracción de las Réplicas del Sismo de Cariaco, 1999.
Creators: name: Contreras, Rommel
name: Avendaño, Jaime
name: Schmitz, Michael
Publisher: name: figshare
Year: 2017
Subjects: subject: 40407 Seismology and Seismic Exploration
subject: FOS: Earth and related environmental sciences

description: Trabajo de grado para optar al título de Licenciado en Física de la Universidad de Oriente // Se realizó un estudio utilizando los epicentros post-sísmicos registrados en la red temporal RESICA, luego del evento de Cariaco de 1997 (Ms = 6,8), para estimar la estructura cortical de la cuenca del Golfo de Cariaco. Se generaron secciones sísmicas utilizando los sismos secundarios como fuentes de energía, identificándose en cuatro de ellas, las fases corticales Pg y Sg, y en una, reflexiones del Moho (fases PM y SM) ubicándolo a una profundidad de 34 km. Los tiempos de llegada para las fases identificadas se utilizaron para generar modelos corticales bidimensionales para el área de estudio (ondas P y ondas S). El modelo presenta una primera capa de 180 m de espesor y velocidad promedio para las ondas P de 2 km/s, que puede interpretarse como los sedimentos de la cuenca del Golfo de Cariaco. La segunda capa corresponde a formaciones calizas y/o metamórficas de la Serranía del Interior, hasta una profundidad de 3,5 km con velocidades entre 4,85 y 5,40 km/s, seguida por una capa de transición a la corteza cristalina, hasta una profundidad de 8,5 km con velocidades entre 5,7 y 6,0 km/s. A partir de una profundidad de 8,5 km, se obtuvieron velocidades superiores a 6,5 km/s, que corresponden con las velocidades reportadas para la corteza media o inferior. El modelo cortical para las ondas S se obtuvo a partir del modelo para las ondas P, mediante la relación de Poisson (Vp/Vs), validándose mediante los tiempos de llegadas de las fases Sg y SM.
title: MRI's role in the clinical suspicion of penile fracture
Creators: name: Santana, Tomás
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Emergency
subject: Genital / Reproductive system male
subject: Urinary Tract / Bladder
subject: MR
subject: Education
subject: Acute
subject: Trauma

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Describing and illustrating the role MRI has in the management of patients with a suspected penile...
Impact of Nested Moisture Cycles on Coastal Chalk Cliff Failure Revealed by Multiseasonal Seismic and Topographic Surveys
Creators: name: Dietze, M.
name: Cook, K. L.
name: Illien, L.
name: Rach, O.
name: Puffpaff, S.
name: Stodian, I.
name: Hovius, N.
Publisher: name: FID GEO
Year: 2020

description: Cliff failure is a fundamental process shaping many coastlines worldwide. Improved insight into direct links between cliff failure and forcing mechanisms requires precise information on the timing of individual failures, which is difficult to obtain with conventional observation methods for longer stretches of coastline. Here we use seismic records and auxiliary data spanning 25 months to precisely identify and locate 81 failure events along the 8.6-km-long chalk cliff coast of Jasmund, on Germany's largest island, Rügen. The subminute precision of event timing allows the linkage of individual failures to triggers over a wide range of relevant time scales. We show that during the monitoring interval, marine processes were negligible as a trigger of cliff failure, although still being important for the removal of resulting deposits. Instead, cliff failure was associated with terrestrial controls on rock moisture. Most failures occurred when water caused a state transition of the cliff forming chalk, from solid to liquid. Water content was modulated by (i) subsurface flow toward the cliff, (ii) rain onto the cliff, and (iii) condensation of atmospheric moisture, leading to clustered failures preferentially during the night. Seasonal water availability, controlled by plant activity, imposed an annual cycle of cliff failure, and wetter and drier than average years imposed a month-long legacy effect on cliff failure dynamics. Similar terrestrial control mechanisms may also be relevant for other coastal chalk cliffs, in addition to already investigated marine triggers.
title: Lung Ultrasound in Neonatal Intensive Care Unit
Creators: name: Scavone, Carlotta
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Lung
subject: Paediatric
subject: Thorax
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Power Doppler
subject: Education
subject: Artifacts
subject: Atelectasis
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: - To describe the main ultrasound features of the lungs (LU) study in neonatal intensive care unit patients;- Describe the different patterns for recognizing different lung diseases of the...
Magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca3Co2O6: an NMR study
Creators: name: Allodi, G.
name: De Renzi, R.
name: Agrestini, S.
name: Mazzoli, C.
name: Lees, M. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemical shift tensors, and of the internal magnetic fields at the non-magnetic Co I sites, unavailable from former studies on powders. The magnetic field-induced ferri- and ferromagnetic phases at intermediate temperature (e.g. 10 K) are identified by distinct internal fields, well accounted for by purely dipolar interactions. The vanishing transferred hyperfine field at the Co I site indicates that the Co3+(I) orbitals do not participate in the intra-chain superexchange, in disagreement with a previous theoretical model. The strong Ising character of the system is confirmed experimentally by the field dependence of the resonance lines, indicating that local moments are saturated even at the phase boundaries. In the vicinity of the critical fields, nuclear spin-spin relaxations detect the spin reversal dynamics of large magnetic assemblies, either Ising chain fragments or finite size domains, which drive the metamagnetic transitions. Such collective excitations exhibit a glassy behavior, slowing down to subacoustic frequencies and freezing at low temperature. The relevance of such slow fluctuation modes for the low-temperature multi-step behavior reported in the magnetization is discussed.
description: 13 pages, 11 figures. Submitted to Phys. Rev. B
Controls on the lateral channel-migration rate of braided channel systems in coarse non-cohesive sediment
Creators: name: Bufe, Aaron
name: Turowski, Jens M.
name: Burbank, Douglas W.
name: Paola, Chris
name: Wickert, Andrew D.
name: Tofelde, Stefanie
Publisher: name: FID GEO
Year: 2019

description: Lateral movements of alluvial river channels control the extent and reworking rates of alluvial fans, floodplains, deltas, and alluvial sections of bedrock rivers. These lateral movements can occur by gradual channel migration or by sudden changes in channel position (avulsions). Whereas models exist for rates of river avulsion, we lack a detailed understanding of the rates of lateral channel migration on the scale of a channel belt. In a two-step process, we develop here an expression for the lateral migration rate of braided channel systems in coarse, non-cohesive sediment. On the basis of photographic and topographic data from laboratory experiments of braided channels performed under constant external boundary conditions, we first explore the impact of autogenic variations of the channel-system geometry (i.e. channel-bank heights, water depths, channel-system width, and channel slope) on channel-migration rates. In agreement with theoretical expectations, we find that, under such constant boundary conditions, the laterally reworked volume of sediment is constant and lateral channel-migration rates scale inversely with the channel-bank height. Furthermore, when channel-bank heights are accounted for, lateral migration rates are independent of the remaining channel geometry parameters. These constraints allow us, in a second step, to derive two alternative expressions for lateral channel-migration rates under different boundary conditions using dimensional analysis. Fits of a compilation of laboratory experiments to these expressions suggest that, for a given channel bank-height, migration rates are strongly sensitive to water discharges and more weakly sensitive to sediment discharges. In addition, external perturbations, such as changes in sediment and water discharges or base level fall, can indirectly affect lateral channel-migration rates by modulating channel-bank heights. © 2019 The Author. Earth Surface Processes and Landforms published by John Wiley & Sons, Ltd. © 2019 The Author. Earth Surface Processes and Landforms published by John Wiley & Sons, Ltd.
A Joint Soil-Vegetation-Atmospheric Water Tagging Procedure With WRF-Hydro: Implementation and Application to the Case of Precipitation Partitioning in the Upper Danube River Basin
Creators: name: Arnault, Joël
name: Wei, Jianhui
name: Rummler, Thomas
name: Fersch, Benjamin
name: Zhang, Zhenyu
name: Jung, Gerlinde
name: Wagner, Sven
name: Kunstmann, Harald
Publisher: name: FID GEO
Year: 2019

description: Atmospheric models such as the Weather Research and Forecasting (WRF) model provide a tool to evaluate the behavior of regional hydrological cycle components, including precipitation, evapotranspiration, soil water storage, and runoff. Recent model developments have focused on coupled atmospheric-hydrological modeling systems, such as WRF-Hydro, in order to account for subsurface, overland, and river flow and potentially improve the representation of land-atmosphere interactions. The aim of this study is to investigate the contribution of lateral terrestrial water flow to the regional hydrological cycle, with the help of a joint soil-vegetation-atmospheric water tagging procedure newly developed in the so-called WRF-tag and WRF-Hydro-tag models. An application of both models for the high precipitation event on 15 August 2008 in the German and Austrian parts of the upper Danube river basin (94,100 km2) is presented. The precipitation that fell in the basin during this event is considered as a water source, is tagged, and subsequently tracked for a 40-month period until December 2011. At the end of the study period, in both simulations, approximately 57% of the tagged water has run off, while 41% has evaporated back to the atmosphere, including 2% that has recycled in the upper Danube river basin as precipitation. In WRF-Hydro-tag, the surface evaporation of tagged water is slightly enhanced by surface flow infiltration and slightly reduced by subsurface lateral water flow in areas with low topography gradients. This affects the source precipitation recycling only in a negligible amount.
Cosmic Evolution in Brans-Dicke Chameleon Cosmology
Creators: name: Jamil, Mubasher
name: Hussain, Ibrar
name: Momeni, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We have investigated the Brans-Dicke Chameleon theory of gravity and obtained exact solutions of the scale factor $a(t)$, scalar field $ϕ(t)$, an arbitrary function $f(ϕ)$ which interact with the matter Lagrangian in the action of the Brans-Dicke Chameleon theory and potential $V(ϕ)$ for different epochs of the cosmic evolution. We plot the functions $a(t)$, $ϕ(t)$, $f(t)$ and $V(ϕ)$ for different values of the Brans-Dicke parameter. In our models, there is no accelerating solution, only decelerating one with $q>0$. The physical cosmological distances have been investigated carefully. Further the statefinder parameters pair and deceleration parameter are discussed.
description: To be appear in "The European Physical Journal - Plus (EPJ Plus)",Extended version,15 pages, 17eps figures
La Estructura Cortical de la Cuenca del Golfo de Cariaco, Mediante el Análisis Sísmico de refracción de las Réplicas del Sismo de Cariaco, 1999
Creators: name: Contreras, Rommel
name: Schmitz, Michael
name: Avendaño, Jaime
Publisher: name: figshare
Year: 2017
Subjects: subject: 40407 Seismology and Seismic Exploration
subject: FOS: Earth and related environmental sciences

description: Trabajo de grado para optar al título de Licenciado en Física de la Universidad de Oriente // Se realizó un estudio utilizando los epicentros post-sísmicos registrados en la red temporal RESICA, luego del evento de Cariaco de 1997 (Ms = 6,8), para estimar la estructura cortical de la cuenca del Golfo de Cariaco. Se generaron secciones sísmicas utilizando los sismos secundarios como fuentes de energía, identificándose en cuatro de ellas, las fases corticales Pg y Sg, y en una, reflexiones del Moho (fases PM y SM) ubicándolo a una profundidad de 34 km. Los tiempos de llegada para las fases identificadas se utilizaron para generar modelos corticales bidimensionales para el área de estudio (ondas P y ondas S). El modelo presenta una primera capa de 180 m de espesor y velocidad promedio para las ondas P de 2 km/s, que puede interpretarse como los sedimentos de la cuenca del Golfo de Cariaco. La segunda capa corresponde a formaciones calizas y/o metamórficas de la Serranía del Interior, hasta una profundidad de 3,5 km con velocidades entre 4,85 y 5,40 km/s, seguida por una capa de transición a la corteza cristalina, hasta una profundidad de 8,5 km con velocidades entre 5,7 y 6,0 km/s. A partir de una profundidad de 8,5 km, se obtuvieron velocidades superiores a 6,5 km/s, que corresponden con las velocidades reportadas para la corteza media o inferior. El modelo cortical para las ondas S se obtuvo a partir del modelo para las ondas P, mediante la relación de Poisson (Vp/Vs), validándose mediante los tiempos de llegadas de las fases Sg y SM.
Sea Ice and Atmospheric Parameter Retrieval From Satellite Microwave Radiometers: Synergy of AMSR2 and SMOS Compared With the CIMR Candidate Mission
Creators: name: Scarlat, Raul Cristian
name: Spreen, Gunnar
name: Heygster, Georg
name: Huntemann, Marcus
name: Patilea, Catalin
name: Pedersen, Leif Toudal
name: Saldo, Roberto
Publisher: name: FID GEO
Year: 2020

description: Research on improving the prediction skill of climate models requires refining the quality of observational data used for initializing and tuning the models. This is especially true in the polar regions where uncertainties about the interactions between sea ice, ocean, and atmosphere are driving ongoing monitoring efforts. The Copernicus Imaging Microwave Radiometer (CIMR) is an European Space Agency (ESA) candidate mission which promises to offer high resolution, low uncertainty observation capabilities at the 1.4, 6.9, 10.65, 18.7, and 36.5 GHz frequencies. To assess the potential impact of CIMR for sea ice parameter retrieval, a comparison is made between retrievals based on present AMSR2 observations and a retrieval using future CIMR equivalent observations over a data set of validated sea ice concentration (SIC) values. An optimal estimation retrieval method (OEM) is used which can use input from different channel combinations to retrieve seven geophysical parameters (sea ice concentration, multi-year ice fraction, ice surface temperature, columnar water vapor, liquid water path, over ocean wind speed, and sea surface temperature). An advantage of CIMR over existing radiometers is that it would provide higher spatial resolution observations at the lower frequency channels (6.9, 10.65, and 18.7 GHz) which are less sensitive to atmospheric influence. This enables the passive microwave based retrieval of SIC and other surface parameters with higher resolution and lower uncertainty than is currently possible. An information content analysis expands the comparison between AMSR2 and CIMR to all retrievable surface and atmospheric parameters. This analysis quantifies the contributions to the observed signal and highlights the differences between different input channel combinations. The higher resolution of the low frequency CIMR channels allow for unprecedented detail to be achieved in Arctic passive microwave sea ice retrievals. The presence of 1.4 GHz channels on board CIMR opens up the possibility for thin sea ice thickness (SIT) retrieval. A combination of collocated AMSR2 and SMOS observations is used to simulate a full CIMR suite of measurements, and the OEM is modified to include SIT as a retrieval parameter. The output from different retrieval configurations is compared with an operational SIT product. The CIMR instrument can provide increased accuracy for SIC retrieval at very high resolutions with a combination of the 18.7 and 36.5 GHz channels while also maintaining sensitivity for atmospheric water vapor retrieval. In combination with the 1.4 GHz channels, SIT can be added as an eighth retrieval parameter with performance on par with existing operational products.
title: Vascular lesions in visceral organs: mechanisms of trauma, types of injury and a review of the 2018 updates of the Injury Scoring Scales of AAST.
Creators: name: Molina Najas, José Juan
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Emergency
subject: Trauma
subject: CT
subject: CT-Angiography
subject: Diagnostic procedure
subject: Education
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: - To describe direct and indirect CT findings of organ lesions suggesting vascular injury. - To make an easier and faster identification and classification of susceptible emergent surgery lesions. - To study the new concepts and grades of the AAST...
Graviton as a Goldstone boson: Nonlinear Sigma Model for Tensor Field Gravity
Creators: name: Chkareuli, J. L.
name: Jejelava, J. G.
name: Tatishvili, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Spontaneous Lorentz invariance violation (SLIV) realized through a nonlinear tensor field constraint H_{}^2=\pm M^2 (M is the proposed scale for Lorentz violation) is considered in tensor field gravity theory, which mimics linearized general relativity in Minkowski space-time. We show that such a SLIV pattern, due to which the true vacuum in the theory is chosen, induces massless tensor Goldstone modes some of which can naturally be associated with the physical graviton. When expressed in terms of the pure Goldstone modes, this theory looks essentially nonlinear and contains a variety of Lorentz and CPT violating couplings. Nonetheless, all SLIV effects turn out to be strictly cancelled in all the lowest order processes considered, provided that the tensor field gravity theory is properly extended to general relativity (GR). So, as we generally argue, the measurable effects of SLIV, induced by elementary vector or tensor fields, are related to the accompanying gauge symmetry breaking rather than to spontaneous Lorentz violation. The latter appears by itself to be physically unobservable, only resulting in a non-covariant gauge choice in an otherwise gauge invariant and Lorentz invariant theory. However, while Goldstonic vector and tensor field theories with exact local invariance are physically indistinguishable from conventional gauge theories, there might appear some principal distinctions if this local symmetry were slightly broken at very small distances controlled by quantum gravity in an explicit, rather than spontaneous, way that could eventually allow one to differentiate between them observationally.
description: 15 pages, some minor additions made
Chemical Weathering of Loess and Its Contribution to Global Alkalinity Fluxes to the Coastal Zone During the Last Glacial Maximum, Mid-Holocene, and Present
Creators: name: Börker, Janine
name: Hartmann, Jens
name: Amann, Thorben
name: Romero-Mujalli, Gibran
name: Moosdorf, Nils
name: Jenkins, Chris
Publisher: name: FID GEO
Year: 2020

description: Loess sediments are windblown silt deposits with, in general, a carbonate grain content of up to 30%. While regionally, loess was reported to increase weathering fluxes substantially, the influence on global weathering fluxes remains unknown. Especially on glacial-interglacial time scales, loess weathering fluxes might have contributed to land-ocean alkalinity flux variability since the loess areal extent during glacial epochs was larger. To quantify loess weathering fluxes, global maps representing the loess distribution were compiled. Water chemistry of rivers draining recent loess deposits suggests that loess contributes over-proportionally to alkalinity concentrations if compared to the mean of alkalinity concentrations of global rivers (~4,110 µeq L−1 for rivers draining loess deposits and ~1,850 µeq L−1 for the total of global rivers), showing comparable alkalinity concentration patterns in rivers as found for carbonate sedimentary rocks. Loess deposits, covering ~4% of the ice- and water-free land area, increase calculated global alkalinity fluxes to the coastal zone by 16%. The new calculations lead to estimating a 4% higher global alkalinity flux during the Last Glacial Maximum (LGM) compared to present fluxes. The effect of loess on that comparison is high. Alkalinity fluxes from silicate-dominated lithological classes were ~28% and ~30% lower during the LGM than recent (with loess and without loess, respectively), and elevated alkalinity fluxes from loess deposits compensated for this. Enhanced loess weathering dampens due to a legacy effect changes in silicate-dominated lithologies over the glacial-interglacial time scale.
title: Lower limb angles and measurements - back to basics
Creators: name: Gomes, Helena
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Musculoskeletal joint
subject: Musculoskeletal system
subject: Plain radiographic studies
subject: Diagnostic procedure
subject: Technical aspects
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To review the main lower limb angles and measurements that can be obtained from lower limb...
On the Formation of Multiple Stellar Populations in Globular Clusters
Creators: name: Conroy, Charlie
name: Spergel, David N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Nearly all globular clusters (GCs) studied to date show evidence for multiple stellar populations, in stark contrast to the conventional view that GCs are a mono-metallic, coeval population of stars. Building on earlier work, we propose a simple physical model for the early evolution (several 10^8 yr) of GCs. We consider the effects of stellar mass-loss, type II and prompt type Ia supernovae, ram pressure, and accretion from the ambient ISM on the development of a young GC's own gas reservoir. In our model, type II SNe from a first generation of star formation clears the GC of its initial gas reservoir. Over the next several 10^8 yr, mass lost from AGB stars and matter accreted from the ambient ISM collect at the center of the GC. This material must remain quite cool (T~10^2K), but does not catastrophically cool on a crossing time because of the high Lyman-Werner flux density in young GCs. The collection of gas within the GC must compete with ram pressure from the ambient ISM. After several 10^8 yr, the Lyman-Werner photon flux density drops by more than three orders of magnitude, allowing molecular hydrogen and then stars to form. After this second generation of star formation, type II SNe from the second generation and then prompt type Ia SNe associated with the first generation maintain a gas-free GC, thereby ending the cycle of star formation events. Our model makes clear predictions for the presence or absence of multiple stellar populations within GCs as a function of GC mass and formation environment. Analyzing intermediate-age LMC clusters, we find evidence for a mass threshold of ~10^4 Msun below which LMC clusters appear to be truly coeval. This threshold mass is consistent with our predictions for the mass at which ram pressure is capable of clearing gas from clusters in the LMC at the present epoch. (ABRIDGED)
description: 13 pages, 5 figures, ApJ in press
title: The ones that stumped us! Some interesting cases encountered during Haematology MDT, that mimicked lymphoma
Creators: name: Bosco, Jerome
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Haematologic
subject: Lymph nodes
subject: CT
subject: MR
subject: PET
subject: Education
subject: eLearning
subject: Staging
subject: Cancer
subject: Education and training
subject: Lymphoma

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: This presentation looks at the mimics of lymphoma, something we need to remember in our regular radiology reporting, especially in a multi-disciplinary meeting.Sarcoidosis is known as the great imitator" and can present like lymphoma both clinically...
A Bayesian graphical modeling approach to microRNA regulatory network inference
Creators: name: Stingo, Francesco C.
name: Chen, Yian A.
name: Vannucci, Marina
name: Barrier, Marianne
name: Mirkes, Philip E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: It has been estimated that about 30% of the genes in the human genome are regulated by microRNAs (miRNAs). These are short RNA sequences that can down-regulate the levels of mRNAs or proteins in animals and plants. Genes regulated by miRNAs are called targets. Typically, methods for target prediction are based solely on sequence data and on the structure information. In this paper we propose a Bayesian graphical modeling approach that infers the miRNA regulatory network by integrating expression levels of miRNAs with their potential mRNA targets and, via the prior probability model, with their sequence/structure information. We use a directed graphical model with a particular structure adapted to our data based on biological considerations. We then achieve network inference using stochastic search methods for variable selection that allow us to explore the huge model space via MCMC. A time-dependent coefficients model is also implemented. We consider experimental data from a study on a very well-known developmental toxicant causing neural tube defects, hyperthermia. Some of the pairs of target gene and miRNA we identify seem very plausible and warrant future investigation. Our proposed method is general and can be easily applied to other types of network inference by integrating multiple data sources.
description: Published in at http://dx.doi.org/10.1214/10-AOAS360 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Applying Conservation of Energy to Estimate Earthquake Frequencies from Strain Rates and Stresses
Creators: name: Ziebarth, Malte J.
name: Von Specht, Sebastian
name: Heidbach, Oliver
name: Cotton, Fabrice
name: Anderson, John G.
Publisher: name: FID GEO
Year: 2020

description: Estimating earthquake occurrence rates from the accumulation rate of seismic moment is an established tool of seismic hazard analysis. We propose an alternative, fault-agnostic approach based on the conservation of energy: the Energy-Conserving Seismicity Framework (ENCOS). Working in energy space has the advantage that the radiated energy is a better predictor of the damage potential of earthquake waves than the seismic moment release. In a region, ENCOS balances the stationary power available to cause earthquakes with the long-term seismic energy release represented by the energy-frequency distribution's first moment. Accumulation and release are connected through the average seismic efficiency, by which we mean the fraction of released energy that is converted into seismic waves. Besides measuring earthquakes in energy, ENCOS differs from moment balance essentially in that the energy accumulation rate depends on the total stress in addition to the strain rate tensor. To validate ENCOS, we exemplarily model the energy-frequency distribution around Southern California. We estimate the energy accumulation rate due to tectonic loading assuming poroelasticity and hydrostasis. Using data from the World Stress Map and assuming the frictional limit to estimate the stress tensor, we obtain a power of 0.8 GW. The uncertainty range, 0.3–2.0 GW, originates mainly from the thickness of the seismogenic crust, the friction coefficient on preexisting faults, and models of Global Positioning System (GPS) derived strain rates. Based on a Gutenberg-Richter magnitude-frequency distribution, this power can be distributed over a range of energies consistent with historical earthquake rates and reasonable bounds on the seismic efficiency.
title: The contribution of cross-sectional imaging in the diagnosis of tetralogy of Fallot
Creators: name: faiz, sofia
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiovascular system
subject: CT-Angiography
subject: MR-Angiography
subject: Computer Applications-Detection, diagnosis
subject: Cardiac Assist Devices

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Tetralogy of Fallot is the most common congenital cyanotic heart disease. It accounts for 7% to 10% of congenital defects, affecting males and females equally and occurring in 3 to 5 of every 10,000 live births It is essentially created by anterior...
title: ÐÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Â«InstagramÂ» (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÑÑÑÐ¾Ð±ÑÐ°Ð½Ð¸ÐµÂ»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Communications promotion in social networks "Instagram" (on the example of OOO "ArtabaneÂ»)
Creators: name: Ð¡ÐµÐ´Ð»ÐµÑÐºÐ¸Ð¹, ÐÐ¼Ð¸ÑÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ
event-ÑÑÐµÑÐ°
ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð°Ñ ÑÐµÑÑ Â«instagramÂ»
communication promotion
event sphere
social network "instagram"

description: ÐÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²aÐ»Ð¸ÑÐ¸ÐºaÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑaÐ±Ð¾ÑÐ° Â«ÐÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Instagram (Ð½a Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÑÑÑÐ¾Ð±ÑÐ°Ð½Ð¸ÐµÂ») Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð² ÑÑÐµÑÐµ event-ÑÑÐ»ÑÐ³, Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÑÐ¼ Ð¸ Ð·Ð½Ð°ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ event-Ð°Ð³ÐµÐ½ÑÑÑÐ²Ð° Â«ÐÑÑÑÐ¾Ð±ÑÐ°Ð½Ð¸ÐµÂ».
Ð ÑÐ°Ð±Ð¾ÑÐµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÐµÑÑÑ Ð¿Ð¾Ð½ÑÑÐ¸Ðµ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ°Ð½Ð°Ð»Ð°, Ð¿ÑÐ¾ÑÐµÑÑ ÐµÐ³Ð¾ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð²ÑÐ±ÑÐ°Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ°Ð½Ð°Ð»Ð° Ð´Ð»Ñ ÑÑÐ½ÐºÐ° event-ÑÑÐ»ÑÐ³. ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿aÐ½Ð¸Ð¸ ÐÐÐ Â«AÑÑÑÐ¾Ð±ÑaÐ½Ð¸ÐµÂ» Ð² Â«InstagramÂ». Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ»Ð°Ð±ÑÐµ ÑÑÐ¾ÑÐ¾Ð½Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐÐÐ Â«AÑÑÑÐ¾Ð±ÑaÐ½Ð¸ÐµÂ» Ð² Â«InstagramÂ».
description: Final qualifying work "Communication promotion in the social network Instagram (for example, LLC" ArtsobranieÂ») it is devoted to the study of communication promotion in the field of event services, features and significance on the example of the event Agency "Artsobranie".
The paper analyzes the concept of a communication channel, the process of its formation, and the features of the selected communication channel for the event services market.
The analysis of the communication activity of the company "Artsobranie" LLC in "Instagram"was performed. The main weaknesses of the communication activity of LLC "Artsobranie" in "Instagram"are considered.
A Data-Driven Framework to Characterize State-Level Water Use in the United States
Creators: name: Wongso, E.
name: Nateghi, R.
name: Zaitchik, B.
name: Quiring, S.
name: Kumar, R.
Publisher: name: FID GEO
Year: 2020

description: Access to credible estimates of water use is critical for making optimal operational decisions and investment plans to ensure reliable and affordable provisioning of water. Furthermore, identifying the key predictors of water use is important for regulators to promote sustainable development policies to reduce water use. In this paper, we propose a data-driven framework, grounded in statistical learning theory, to develop a rigorously evaluated predictive model of state-level, per capita water use in the United States as a function of various geographic, climatic, and socioeconomic variables. Specifically, we compare the accuracy of various statistical methods in predicting the state-level, per capita water use and find that the model based on the random forest algorithm outperforms all other models. We then leverage the random forest model to identify key factors associated with high water-usage intensity among different sectors in the United States. More specifically, irrigated farming, thermoelectric energy generation, and urbanization were identified as the most water-intensive anthropogenic activities, on a per capita basis. Among the climate factors, precipitation was found to be a key predictor of per capita water use, with drier conditions associated with higher water usage. Overall, our study highlights the utility of leveraging data-driven modeling to gain valuable insights related to the water use patterns across expansive geographical areas.
Cartesian products avoiding patterns
Creators: name: Denson, Jacob
Publisher: name: University of British Columbia
Year: 2020

description: The pattern avoidance problem seeks to construct a set with large fractal dimension that avoids a prescribed pattern, such as three term arithmetic progressions, or more general patterns such as finding a set whose Cartesian product avoids the zero set of a given function. Previous work on the subject has considered patterns described by polynomials, or functions satisfying certain regularity conditions. We provide an exposition of some results in this setting, as well as considering new strategies to avoid ‘rough patterns’. There are several problems that fit into the framework of rough pattern avoidance. For instance, we prove that for any set X with lower Minkowski dimension s, there exists a set Y with Hausdorff dimension 1 − s such that for any rational numbers a₁, ..., aN, a₁Y + ··· + aNY is disjoint from X, or intersects solely at the origin. As a second application, we construct subsets of Lipschitz curves with dimension 1/2 not containing the vertices of any isosceles triangle.
Changing Salinity Gradients in the Baltic Sea As a Consequence of Altered Freshwater Budgets
Creators: name: Kniebusch, Madline
name: Meier, H.E. Markus
name: Radtke, Hagen
Publisher: name: FID GEO
Year: 2019

description: Climate change is expected to enhance the hydrological cycle in northern latitudes reducing the salinity in the Baltic Sea, a land-locked marginal sea with a large catchment area located in northern Europe. With the help of ocean simulations forced by historical atmospheric and hydrological reconstructions and local observations, we analyzed long-term changes in the sea surface salinity of the Baltic Sea as well as its latitudinal gradient. The variability of both is dominated by multidecadal oscillations with a period of about 30 years, while both atmospheric variables, wind and river runoff, contribute to this variability. Centennial changes show a statistically significant positive trend in the North-South gradient of sea surface salinity for 1900–2008. This change is mainly attributed to increased river runoff from the northernmost catchment indicating a footprint of the anthropogenic impact on salinity with consequences for the marine ecosystem and species distributions.
Monitorando memes em mídias sociais
Creators: name: Chagas, Viktor
name: Toth, Janderson Pereira
Publisher: name: figshare
Year: 2017
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: In: SILVA, Tarcízio; STABILE, Max (Orgs.). Monitoramento e pesquisa em mídias sociais: metodologias, aplicações e inovações. São Paulo: Uva Limão, 2016.
Density Functional of a Two-Dimensional Gas of Dipolar Atoms: Thomas-Fermi-Dirac Treatment
Creators: name: Fang, Bess
name: Englert, Berthold-Georg
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We derive the density functional for the ground-state energy of a two-dimensional, spin-polarized gas of neutral fermionic atoms with magnetic-dipole interaction, in the Thomas-Fermi-Dirac approximation. For many atoms in a harmonic trap, we give analytical solutions for the single-particle spatial density and the ground-state energy, in dependence on the interaction strength, and we discuss the weak-interaction limit that is relevant for experiments. We then lift the restriction of full spin polarization and account for a time-independent inhomogeneous external magnetic field. The field strength necessary to ensure full spin polarization is derived.
description: 12 pages, 4 figures, 1 table
title: Paroxysmal Nocturnal Hemoglobinuria (PNH): Radiological findings and thrombotic complications
Creators: name: Sánchez, Carlos
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: CNS
subject: Haematologic
subject: MR
subject: Diagnostic procedure
subject: Haematologic diseases

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To know the main characteristics of this entity: pathophysiology, clinical manifestations, and epidemiology. To show its main imaging findings fundamentally related to thromboembolic complications and abnormal iron deposits (kidneys and liver). The...
title: The dark side of the cerebral venous thrombosis.
Creators: name: Rodriguez Ramirez, Nicolas
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Neuroradiology brain
subject: CT
subject: MR
subject: Normal variants
subject: Embolism / Thrombosis

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Review the technical aspects and protocols of the imaging techniques in the CVT diagnosis. Understand the different situations and entities that can mimic CVT avoiding misdiagnosis. Provide tips for evaluate extension studies in cases of doubts in...
From nanoparticles to nanocrystalline bulk: Field assisted sintering of silicon nanoparticles
Creators: name: Schwesig, D.
name: Schierning, G.
name: Theissmann, R.
name: Stein, N.
name: Petermann, N.
name: Wiggers, H.
name: Schmechel, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanocrystalline bulk materials are desirable for many applications as they combine mechanical strength and specific electronic transport properties. Our bottom up approach starts with tailored nanoparticles. Compaction and thermal treatment are crucial, but usually the final stage sintering is accompanied by rapid grain growth which spoils nanocristallinity. For electrically conducting nanoparticles, field activated sintering techniques overcome this problem. Small grain sizes have been maintained in spite of consolidation. Nevertheless, the underlying principles, which are of high practical impact, have not been fully elucidated yet. In this combined experimental and theoretical work we show, how the developing microstructure during sintering correlates to the percolation paths of the current through the powder using highly doped silicon nanoparticles as a model system. It is possible to achieve a nanocrystalline bulk material and a homogeneous microstructure. For this, not only the generation of current paths due compaction, but also the disintegration due to joule heating is required. The observed density fluctuations on the micrometer scale are attributed to the specific heat profile of the simulated powder networks.
Photometric magnetic activity and active-region lifetimes of solar-like stars
Creators: name: Santos, Angela R. G.
name: Mathur, Savita
name: García, Rafael A.
name: Cunha, Margarida S.
name: Avelino, Pedro P.
name: Broomhall, Anne-Marie
name: Egeland, Ricky
name: Breton, Sylvain N.
Publisher: name: Zenodo
Year: 2021
Subjects: stars: low-mass
stars: rotation
stars: activity
starspots
techniques: photometric

description: Rotational modulation due to dark spots co-rotating with the stellar surface allows us to constrain rotation and magnetic properties of solar-like stars. The long-term observations collected by Kepler (and those that will be collected by PLATO) are preferred for a better characterization of magnetic activity. In this work, we investigate the temporal variability of the photometric magnetic activity proxy Sph, as well as the characteristic timescale of active-regions in solar-like stars.
description: Part of the results, particularly on the ACF for artificial date, are published and can be found here: https://ui.adsabs.harvard.edu/abs/2021MNRAS.508..267S/abstract The rotation and average S_ph catalog can be found here: https://ui.adsabs.harvard.edu/abs/2019ApJS..244...21S/abstract https://ui.adsabs.harvard.edu/abs/2021ApJS..255...17S/abstract The machine learning algorithm for rotation, ROOSTER, is described here: https://ui.adsabs.harvard.edu/abs/2021A%26A...647A.125B/abstract
title: The role of CT in the diagnosis of duodenal emergencies
Creators: name: Fulgoi, Cristina
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Emergency
subject: Gastrointestinal tract
subject: CT
subject: CT-Angiography
subject: Computer Applications-Detection, diagnosis
subject: Contrast agent-intravenous
subject: Acute
subject: Inflammation
subject: Obstruction / Occlusion

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To present the main key findings for the assessment of CT images in cases of duodenal emergencies, including essential notions of anatomy, imaging acquisition protocol, clinical presentation as well as the typical CT changes found in these acute,...
title: : Contribution of MRI to the diagnosis of cavernomes of the central nervous system
Creators: name: IJIM, FADOUA
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Anatomy
subject: Head and neck
subject: Neuroradiology brain
subject: MR
subject: Imaging sequences
subject: Blood

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To illustrate the contribution of imaging, mainly MRI in the positive diagnosis of cavernomas and specify its different radiological forms. To review the typical imaging characteristics of cavernomas on magnetic resonance (MR) imaging, and the key...