cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Use of contrast-enhanced-ultrasound (CEUS) and Computed Tomography/Ultrasound fusion to assess small bowel fistulation of psoas abscess
Creators: name: Memon, Noorulain
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Interventional radiology
subject: Abdomen
subject: Hybrid Imaging
subject: Interventional non-vascular
subject: CT
subject: Ultrasound
subject: Contrast agent-other
subject: Abscess
subject: Cancer
subject: Fistula
subject: Clinical Cases

description: Clinical History: A 67-year-old female presented to the Emergency Department with a 3-day history of severe right upper quadrant abdominal pain and right loin pain. Patient had raised inflammatory markers (CRP 118) and tachycardia. This patient had known endometrial cancer and a paravertebral collection for which she had received chemotherapy and radiotherapy.

description: 67 years, female
The Bloch-Okounkov theorem for congruence subgroups and Taylor coefficients of quasi-Jacobi forms
Creators: name: van Ittersum, Jan-Willem M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: There are many families of functions on partitions, such as the shifted symmetric functions, for which the corresponding q-brackets are quasimodular forms. We extend these families so that the corresponding q-brackets are quasimodular for a congruence subgroup. Moreover, we find subspaces of these families for which the q-bracket is a modular form. These results follow from the properties of Taylor coefficients of strictly meromorphic quasi-Jacobi forms around rational lattice points.
description: Final version; to appear in Res. Math. Sci
Expected performance of air-shower measurements with the radio-interferometric technique
Creators: name: Schlüter, Felix
name: Huege, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Interferometric measurements with arrays of radio antennas are a powerful and widely used technique in astronomy. Recently, this technique has been revisited for the reconstruction of extensive air showers [1]. This radio-interferometric technique exploits the coherence in the radio emission emitted by billions of secondary shower particles to reconstruct the shower parameters, in particular the shower axis and depth of the shower maximum $X_\mathrm{max}$. The accuracy previously demonstrated on simulations with an idealized detector is very promising. In this article we evaluate the potential of interferometric $X_\mathrm{max}$ measurements using (simulated) inclined air showers with sparse antenna arrays under realistic conditions. To determine prerequisites for the application of the radio-interferometric technique with various antenna arrays, the influence of inaccuracies in the time synchronisation between antennas and its inter-dependency with the antenna density is investigated in detail. We find a strong correlation between the antenna multiplicity (per event) and the maximum acceptable time jitter, i.e., inaccuracy in the time synchronisation. For data recorded with a time synchronisation accurate to within 1 ns in the commonly used frequency band of 30 to 80 MHz, an antenna multiplicity of $> 50$ is needed to achieve an $X_\mathrm{max}$ resolution of $σ_{X_\mathrm{max}} \lesssim 20$ g cm$^{-2}$. For data recorded with 2 ns accuracy, already $\gtrsim 200$ antennas are needed to achieve this $X_\mathrm{max}$ resolution. Furthermore, we find no advantage reconstructing $X_\mathrm{max}$ from data simulated at higher observation frequencies, i.e., up to several hundred MHz. Finally, we provide a generalisation of our results from very inclined air showers to vertical geometries.
title: Autoimmune paraneoplastic limbic encephalitis
Creators: name: Gavilánez Flores, Edwin Alejandro
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Neuroradiology
subject: Head and neck
subject: Neuroradiology brain
subject: Oncology
subject: MR
subject: Clinical Cases

description: Clinical History: A 53-year-old woman with a history of high blood pressure, smoker, cocaine and 3,4-methyl​enedioxy​methamphetamine (MDMA) user, has been suffering from progressive cognitive impairment, abnormal behaviour and weight loss over the past seven months.

She was admitted to the hospital after developing a focal left-hemispheric episode followed by a seizure.

On physical examination, she presented aphasia and right hemiparesis, temporal-spatial disorientation, severe alteration of episodic memory and abolition of Achilles reflexes.

description: 53 years, female
Estadística Espacial Aplicada Al Estudio De Los Procesos De Formación Del Registro Arqueológico En Sociedades Cazadoras-Recolectoras Fueguinas
Creators: name: Negre Pérez, Joan
name: Álvarez, Myrian
name: Briz i Godino, Ivan
name: Lacrouts, Adriana
Publisher: name: Zenodo
Year: 2015
Subjects: estadística espacial
sociedades cazadoras-recolectoras
Tierra del Fuego
formación del registro
gestión social del espacio

description: Este trabajo se centra en el desarrollo teórico y metodológico de un conjunto de herramientas de estadística espacial destinadas al análisis del registro arqueológico intra-sitio. Se propone, a través de un extenso caso de estudio situado en el Canal Beagle (Tierra del Fuego, Argentina), el sitio arqueológico Lanashuaia II, la aplicación de métodos cuantitativos sobre los datos coordenados provenientes de su excavación. El objetivo final es evaluar la validez de estas herramientas con el objetivo de inferir la organización espacial de las actividades en sociedades cazadoras-recolectoras y discernir entre los procesos de formación del registro sociales y naturales. En el ejemplo propuesto, diversas áreas de actividad fueron delimitadas, así como el proceso progresivo que diacrónicamente condujo a la estructuración espacial del sitio por el grupo que allí habitó. Los resultados expuestos para este caso de estudio específico parecen confirmar tanto la validez de la propuesta como la capacidad analítica de las herramientas para cumplir con los objetivos iniciales del trabajo.
A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A
Creators: name: Ouyed, Rachid
name: Leahy, Denis
name: Ouyed, Amir
name: Jaikumar, Prashanth
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important implications for lightcurves of subluminous as well as superluminous supernovae.
description: Accepted/to be published in Physical Review Letters. [ for more info on the Quark Nova, see: http://quarknova.ucalgary.ca/ ]
A Deep Learning approach to Reduced Order Modelling of Parameter Dependent Partial Differential Equations
Creators: name: Franco, Nicola R.
name: Manzoni, Andrea
name: Zunino, Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Within the framework of parameter dependent PDEs, we develop a constructive approach based on Deep Neural Networks for the efficient approximation of the parameter-to-solution map. The research is motivated by the limitations and drawbacks of state-of-the-art algorithms, such as the Reduced Basis method, when addressing problems that show a slow decay in the Kolmogorov n-width. Our work is based on the use of deep autoencoders, which we employ for encoding and decoding a high fidelity approximation of the solution manifold. To provide guidelines for the design of deep autoencoders, we consider a nonlinear version of the Kolmogorov n-width over which we base the concept of a minimal latent dimension. We show that the latter is intimately related to the topological properties of the solution manifold, and we provide theoretical results with particular emphasis on second order elliptic PDEs, characterizing the minimal dimension and the approximation errors of the proposed approach. The theory presented is further supported by numerical experiments, where we compare the proposed approach with classical POD-Galerkin reduced order models. In particular, we consider parametrized advection-diffusion PDEs, and we test the methodology in the presence of strong transport fields, singular terms and stochastic coefficients.
description: We have included an additional theoretical result where we provide error estimates for the proposed approach (see Theorem 5)
Zu den Umbauprojekten des Kreuzaltars von Hans Reichle in St. Ulrich und Afra in Augsburg
Creators: name: Bushart, Bruno
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 10 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Enumeration of Splitting Subspaces over Finite Fields
Creators: name: Ghorpade, Sudhir R.
name: Ram, Samrith
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: Primary 15A03, 11T06 05E99 Secondary 11T71

description: We discuss an elementary, yet unsolved, problem of Niederreiter concerning the enumeration of a class of subspaces of finite dimensional vector spaces over finite fields. A short and self-contained account of some recent progress on this problem is included and some related problems are discussed.
description: 10 pages; to appear in the Proceedings of AGCT (Luminy, France, 2011)
Mechanisms of Andreev reflection in quantum Hall graphene
Creators: name: Manesco, Antonio L. R.
name: Flór, Ian Matthias
name: Liu, Chun-Xiao
name: Akhmerov, Anton R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We simulate a hybrid superconductor-graphene device in the quantum Hall regime to identify the origin of downstream resistance oscillations in a recent experiment [Zhao et. al. Nature Physics 16, (2020)]. In addition to the previously studied Mach-Zehnder interference between the valley-polarized edge states, we consider disorder-induced scattering, and the previously overlooked appearance of the counter-propagating states generated by the interface density mismatch. Comparing our results with the experiment, we conclude that the observed oscillations are induced by the interfacial disorder, and that lattice-matched superconductors are necessary to observe the alternative ballistic effects.
description: 16 pages, 7 figures
MPEC 2023-W128 : 2023 WJ3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 WJ3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Unconstrained Face-Mask & Face-Hand Datasets: Building a Computer Vision System to Help Prevent the Transmission of COVID-19
Creators: name: Eyiokur, Fevziye Irem
name: Ekenel, Hazım Kemal
name: Waibel, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Health organizations advise social distancing, wearing face mask, and avoiding touching face to prevent the spread of coronavirus. Based on these protective measures, we developed a computer vision system to help prevent the transmission of COVID-19. Specifically, the developed system performs face mask detection, face-hand interaction detection, and measures social distance. To train and evaluate the developed system, we collected and annotated images that represent face mask usage and face-hand interaction in the real world. Besides assessing the performance of the developed system on our own datasets, we also tested it on existing datasets in the literature without performing any adaptation on them. In addition, we proposed a module to track social distance between people. Experimental results indicate that our datasets represent the real-world's diversity well. The proposed system achieved very high performance and generalization capacity for face mask usage detection, face-hand interaction detection, and measuring social distance in a real-world scenario on unseen data. The datasets will be available at https://github.com/iremeyiokur/COVID-19-Preventions-Control-System.
description: 9 pages, 4 figures
title: Aircraft Wake Vortex State-of-the-Art and Research Needs
Creators: name: Holzäpfel, Frank
name: Reinke, Andreas
name: Kauertz, Sebastian
name: Konopka, Jens
name: Bauer, Tobias
name: Fischenberg, Dietrich
name: Niedermeier, Dominik
name: Schwarz, Carsten
name: Vechtel, Dennis
name: Wolkensinger, Christopher
name: Choroba, Peter
name: Freville, Elsa
name: Craig, George
name: Desenfans, Olivier
name: Mitchel, Debbie
name: Morris, Charles
name: Ross, Matt
name: Steiner, Matthias
name: Speijker, Lennaert
name: Van Der Geest, Peter
name: Brown, Anthony
name: Coustols, Eric
name: Barbaresco, Frederic
name: Moneuse, Jean-Francois
name: Barny, Hervé
name: Schmitt, Nikolaus
name: Amelsberg, Swantje
name: Luckner, Robert
name: Schönhals, Shanna
name: Steen, Meiko
name: De Visscher, Ivan
name: Winckelmans, Grégoire
Publisher: name: DLR
Year: 2015
Subjects: wake vortices
state-of-the-art
research needs
operational concepts
enabling systems
technologies and methodologies
safety

description: Report on aircraft wake vortex research.
L3DAS21 Challenge: Machine Learning for 3D Audio Signal Processing
Creators: name: Guizzo, Eric
name: Gramaccioni, Riccardo F.
name: Jamili, Saeid
name: Marinoni, Christian
name: Massaro, Edoardo
name: Medaglia, Claudia
name: Nachira, Giuseppe
name: Nucciarelli, Leonardo
name: Paglialunga, Ludovica
name: Pennese, Marco
name: Pepe, Sveva
name: Rocchi, Enrico
name: Uncini, Aurelio
name: Comminiello, Danilo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The L3DAS21 Challenge is aimed at encouraging and fostering collaborative research on machine learning for 3D audio signal processing, with particular focus on 3D speech enhancement (SE) and 3D sound localization and detection (SELD). Alongside with the challenge, we release the L3DAS21 dataset, a 65 hours 3D audio corpus, accompanied with a Python API that facilitates the data usage and results submission stage. Usually, machine learning approaches to 3D audio tasks are based on single-perspective Ambisonics recordings or on arrays of single-capsule microphones. We propose, instead, a novel multichannel audio configuration based multiple-source and multiple-perspective Ambisonics recordings, performed with an array of two first-order Ambisonics microphones. To the best of our knowledge, it is the first time that a dual-mic Ambisonics configuration is used for these tasks. We provide baseline models and results for both tasks, obtained with state-of-the-art architectures: FaSNet for SE and SELDNet for SELD. This report is aimed at providing all needed information to participate in the L3DAS21 Challenge, illustrating the details of the L3DAS21 dataset, the challenge tasks and the baseline models.
description: Documentation paper for the L3DAS21 Challenge for IEEE MLSP 2021. Further information on www.l3das.com/mlsp2021
Hop-Count Based Self-Supervised Anomaly Detection on Attributed Networks
Creators: name: Huang, Tianjin
name: Pei, Yulong
name: Menkovski, Vlado
name: Pechenizkiy, Mykola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent years have witnessed an upsurge of interest in the problem of anomaly detection on attributed networks due to its importance in both research and practice. Although various approaches have been proposed to solve this problem, two major limitations exist: (1) unsupervised approaches usually work much less efficiently due to the lack of supervisory signal, and (2) existing anomaly detection methods only use local contextual information to detect anomalous nodes, e.g., one- or two-hop information, but ignore the global contextual information. Since anomalous nodes differ from normal nodes in structures and attributes, it is intuitive that the distance between anomalous nodes and their neighbors should be larger than that between normal nodes and their neighbors if we remove the edges connecting anomalous and normal nodes. Thus, hop counts based on both global and local contextual information can be served as the indicators of anomaly. Motivated by this intuition, we propose a hop-count based model (HCM) to detect anomalies by modeling both local and global contextual information. To make better use of hop counts for anomaly identification, we propose to use hop counts prediction as a self-supervised task. We design two anomaly scores based on the hop counts prediction via HCM model to identify anomalies. Besides, we employ Bayesian learning to train HCM model for capturing uncertainty in learned parameters and avoiding overfitting. Extensive experiments on real-world attributed networks demonstrate that our proposed model is effective in anomaly detection.
description: ECML2022 Accepted. 18 pages
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 10 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Handover Necessity Estimation for 4G Heterogeneous Networks
Creators: name: Hassane, Abdoul Aziz Issaka
name: Renfa, Li
name: Fanzi, Zeng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: One of the most challenges of 4G network is to have a unified network of heterogeneous wireless networks. To achieve seamless mobility in such a diverse environment, vertical hand off is still a challenging problem. In many situations handover failures and unnecessary handoffs are triggered causing degradation of services, reduction in throughput and increase the blocking probability and packet loss. In this paper a new vertical handoff decision algorithm handover necessity estimation (HNE), is proposed to minimize the number of handover failure and unnecessary handover in heterogeneous wireless networks. we have proposed a multi criteria vertical handoff decision algorithm based on two parts: traveling time estimation and time threshold calculation. Our proposed methods are compared against two other methods: (a) the fixed RSS threshold based method, in which handovers between the cellular network and the WLAN are initiated when the RSS from the WLAN reaches a fixed threshold, and (b) the hysteresis based method, in which a hysteresis is introduced to prevent the ping-pong effect. Simulation results show that, this method reduced the number of handover failures and unnecessary handovers up to 80% and 70%, respectively.
Mitteilung des Verbandes deutscher Kunsthistoriker e.V.
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 9 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Quaternion Generative Adversarial Networks
Creators: name: Grassucci, Eleonora
name: Cicero, Edoardo
name: Comminiello, Danilo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Latest Generative Adversarial Networks (GANs) are gathering outstanding results through a large-scale training, thus employing models composed of millions of parameters requiring extensive computational capabilities. Building such huge models undermines their replicability and increases the training instability. Moreover, multi-channel data, such as images or audio, are usually processed by realvalued convolutional networks that flatten and concatenate the input, often losing intra-channel spatial relations. To address these issues related to complexity and information loss, we propose a family of quaternion-valued generative adversarial networks (QGANs). QGANs exploit the properties of quaternion algebra, e.g., the Hamilton product, that allows to process channels as a single entity and capture internal latent relations, while reducing by a factor of 4 the overall number of parameters. We show how to design QGANs and to extend the proposed approach even to advanced models.We compare the proposed QGANs with real-valued counterparts on several image generation benchmarks. Results show that QGANs are able to obtain better FID scores than real-valued GANs and to generate visually pleasing images. Furthermore, QGANs save up to 75% of the training parameters. We believe these results may pave the way to novel, more accessible, GANs capable of improving performance and saving computational resources.
description: Accepted as a Chapter for the SPRINGER book "Generative Adversarial Learning: Architectures and Applications"
title: A rare case of relapsing seizures in a young adult
Creators: name: Ghiara, Carlotta
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Neuroradiology
subject: Neuroradiology brain
subject: MR
subject: MR-Diffusion/Perfusion
subject: Cancer
subject: Seizure disorders
subject: Clinical Cases

description: Clinical History: A 26-year-old man, with a history of recurrent seizures despite therapy with levetiracetam 500 mg bid, presented to our hospital for alternating headaches, with associated vertiginous episodes.

description: 26 years, male
Eine spätkarolingische Basilika unter der Ägidiuskirche in Wiedenbrück/Westfalen
Creators: name: Lobbedey, Uwe
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 9 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Magnon modes as a joint effect of surface ferromagnetism and spin-orbite coupling in CoSi chiral topological semimetal
Creators: name: Esin, V. D.
name: Timonina, A. V.
name: Kolesnikov, N. N.
name: Deviatov, E. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: CoSi single crystal is a known realization of a chiral topological semimetal with simultaneously broken mirror and inversion symmetries. In addition to the symmetry-induced spin-orbit coupling, surface ferromagnetism is known in nominally diamagnetic CoSi structures, which appears due to the distorted bonds and ordered vacancies near the surface. We experimentally investigate electron transport through a thin CoSi flake at high current density. Surprisingly, we demonstrate $dV/dI(I)$ curves which are qualitatively similar to ones for ferromagnetic multilayers with characteristic $dV/dI$ magnon peaks and unconventional magnetic field evolution of the peaks' positions. We understand these observations as a result of current-induced spin polarization due to the significant spin-orbit coupling in CoSi. Scattering of non-equilibrium spin-polarized carriers within the surface ferromagnetic layer is responsible for the precessing spin-wave excitations, so the observed magnon modes are the joint effect of surface ferromagnetism and spin-orbit coupling in a CoSi chiral topological semimetal. Thus, thin CoSi flakes behave as magnetic conductors with broken inversion symmetry, which is important for different spintronic phenomena.
Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. I. Jet Energetics and the Pristine Parsec-Scale Environment of a Supermassive Black Hole
Creators: name: Berger, E.
name: Zauderer, A.
name: Pooley, G. G.
name: Soderberg, A. M.
name: Sari, R.
name: Brunthaler, A.
name: Bietenholz, M. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present continued radio observations of the tidal disruption event SwiftJ164449.3+573451 extending to \sim216 days after discovery. The data are part of a long-term program to monitor the expansion and energy scale of the relativistic outflow, and to trace the parsec-scale environment around a previously-dormant supermassive black hole (SMBH). The new observations reveal a significant change in the radio evolution starting at \sim1 month, with a brightening at all frequencies that requires an increase in the energy by about an order of magnitude, and an overall density profile around the SMBH of rho \propto r^{-3/2} (0.1-1.2 pc) with a significant flattening at r\sim0.4-0.6 pc. The increase in energy cannot be explained with continuous injection from an L \propto t^{-5/3} tail, which is observed in the X-rays. Instead, we conclude that the relativistic jet was launched with a wide range of Lorentz factors, obeying E(>Gamma) \propto Gamma^{-2.5}. The similar ratio of duration to dynamical timescale for Sw1644+57 and GRBs suggests that this result may be applicable to GRBs as well. The radial density profile may be indicative of Bondi accretion, with the inferred flattening at r\sim0.5 pc in good agreement with the Bondi radius for a \sim10^6 M_sun black hole. The density at \sim0.5 pc is about a factor of 30 times lower than inferred for the Milky Way galactic center, potentially due to a smaller number of mass-shedding massive stars. From our latest observations (\sim216 d) we find that the jet energy is E_{iso}\sim5x10^{53} erg (E_j\sim2.4x10^{51} erg for theta_j=0.1), the radius is r\sim1.2 pc, the Lorentz factor is Gamma\sim2.2, the ambient density is n\sim0.2 cm^{-3}, and the projected size is r_{proj}\sim25 microarcsec. Assuming no future changes in the observed evolution we predict that the radio emission from Sw1644+57 should be detectable with the EVLA for several decades, and will be resolvable with VLBI in a few years.
description: Submitted to ApJ; 22 pages, 2 tables, 9 figures
A practical guide to verifiable, evidence-based conservation: learning and synthesising
Creators: name: Funk, Stephan M
Publisher: name: Zenodo
Year: 2023
Subjects: conservation plan
conservation management
conservation standards
evidence-based conservation
learning
synthesising

description: The learning and synthesis phase in the conservation project cycle is essential for informing adaptive management, yet it faces challenges like evidence inaccessibility, time limitations, and the disconnect between scientific research and field application. Online platforms have improved access to biodiversity conservation evidence, but persistent biases in study focus, language, and cost analysis highlight the need for broader inclusivity in conservation strategies. As databases expand, conservationists must adeptly manage and decipher vast data volumes, utilising targeted visualisation tools and ethical analytical techniques to streamline interpretation. Time allocated to evidence synthesis should match the decision's uncertainty and risk levels, employing tools like the Evidence-to-Decision framework to ensure systematic, informed decision-making. Effective communication of these syntheses to practitioners requires plain language to enhance understanding while ensuring detailed evidence remains transparently accessible for in-depth review.
Cosechando el dilema: explorando el laberinto ético de las semillas transgénicas
Creators: name: Reyes Huerta, Leonardo
Publisher: name: Benemérita Universidad Autónoma de Puebla
Year: 2024
Subjects: semillas
transgénicos
bioética
biotecnología
agricultura

description: Resumen

La comprensión integral del debate ético en torno a las semillas transgénicas requiere una contextualización en la convergencia de la biotecnología, la ética y la seguridad alimentaria. Este trabajo se sumerge en diversas áreas fundamentales para proporcionar un sustento científico robusto con respecto al tema a tratar.

Biotecnología y semillas transgénicas:

Las semillas transgénicas, resultado de la aplicación de la biotecnología agrícola, constituyen una instancia paradigmática en la manipulación genética de cultivos. En este contexto, se aborda la ingeniería genética para la optimización de características agronómicas y se examina su evolución histórica. Se analizan los mecanismos moleculares detrás de la transferencia de genes y la inserción de transgenes en el genoma vegetal, destacando la intersección entre la biología molecular y la agricultura.

Ética y bioética en la biotecnología agrícola:

Las semillas transgénicas plantean interrogantes éticos intrincados. Este segmento comprende los cimientos filosóficos y metodológicos de la bioética, centrándose en principios fundamentales como la autonomía, beneficencia, no-maleficencia y justicia. Se explora la aplicación específica de estos principios en el ámbito de la modificación genética de cultivos, delineando cómo guían la toma de decisiones éticas.

Posturas y debates en torno a las semillas transgénicas:

La polarización en las perspectivas sobre las semillas transgénicas es un fenómeno central en el debate contemporáneo. Este apartado integra las diversas posturas, desde la promoción de estas semillas como soluciones eficaces para la seguridad alimentaria hasta la inquietud expresada en torno a posibles impactos ambientales y de salud. Se utiliza un análisis crítico para examinar la retórica polarizada y se aboga por una aproximación científica y equilibrada.

Responsabilidad ética y medio ambiente:

El reconocimiento de la responsabilidad ética hacia el medio ambiente en el contexto de la modificación genética de cultivos implica la consideración de efectos colaterales potenciales. Este componente del marco teórico se adentra en la ética ambiental, explorando cómo las decisiones relativas a las semillas transgénicas deben ponderar no solo el bienestar humano sino también la preservación de la biodiversidad y la integridad ecológica.
Dispersive estimates for Schrödinger operators in dimension two with obstructions at zero energy
Creators: name: Erdogan, M. Burak
name: Green, William R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We investigate $L^1(\R^2)\to L^\infty(\R^2)$ dispersive estimates for the Schrödinger operator $H=-Δ+V$ when there are obstructions, resonances or an eigenvalue, at zero energy. In particular, we show that the existence of an s-wave resonance at zero energy does not destroy the $t^{-1}$ decay rate. We also show that if there is a p-wave resonance or an eigenvalue at zero energy then there is a time dependent operator $F_t$ satisfying $\|F_t\|_{L^1\to L^\infty} \lesssim 1$ such that $$\|e^{itH}P_{ac}-F_t\|_{L^1\to L^\infty} \lesssim |t|^{-1}, \text{for} |t|>1.$$ We also establish a weighted dispersive estimate with $t^{-1}$ decay rate in the case when there is an eigenvalue at zero energy but no resonances.
description: 41 pages
Trace and norm of indecomposable integers in cubic orders
Creators: name: Tinková, Magdaléna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We study the structure of the codifferent and of additively indecomposable integers in families of totally real cubic fields. We prove that for cubic orders in these fields, the minimal trace of indecomposable integers multiplied by totally positive elements of the codifferent can be arbitrarily large. This is very surprising, as in the so far studied examples of quadratic and simplest cubic fields, this minimum is 1 and 2. We further give sharp upper bounds on the norms of indecomposable integers in our families.
title: Dysplasia epiphysealis hemimelica (Trevor’s disease)
Creators: name: Karam Mahmoud Mohammed, Rasha
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Bones
subject: Computer applications
subject: Musculoskeletal bone
subject: MR
subject: Clinical Cases

description: Clinical History: An 8-year-old male patient presented with left ankle pain and limited motion slowly progressed within the last two years. No history of trauma, infection, malignancy, or operation.

description: 8 years, male
Detectable Gravitational Wave Signals from Affleck-Dine Baryogenesis
Creators: name: White, Graham
name: Pearce, Lauren
name: Vagie, Daniel
name: Kusenko, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In Affleck-Dine baryogenesis, the observed baryon asymmetry of the Universe is generated through the evolution of the vacuum expectation value (VEV) of a scalar condensate. This scalar condensate generically fragments into non-topological solitons (Q-balls). If they are sufficiently long-lived, they lead to an early matter domination epoch, which enhances the primordial gravitational wave signal for modes that enter the horizon during this epoch. The sudden decay of the Q-balls into fermions results in a rapid transition from matter to radiation domination, producing a sharp peak in the gravitational wave power spectrum. Avoiding the problem of gravitino over-abundance favours scenarios where the peak frequency of the resonance is within the range of the Einstein Telescope and/or Decigo. Therefore, we show this scenario provides an observable signal, providing a mechanism to test Affleck-Dine baryogenesis.
description: 7 pages, 1 figure, author order determined by coin-flip
Complete measurements of quantum observables
Creators: name: Pellonpää, Juha-Pekka
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We define a complete measurement of a quantum observable (POVM) as a measurement of the maximally refined version of the POVM. Complete measurements give information from the multiplicities of the measurement outcomes and can be viewed as state preparation procedures. We show that any POVM can be measured completely by using sequential measurements or maximally refinable instruments. Moreover, the ancillary space of a complete measurement can be chosen to be minimal.
description: Based on talk given in CEQIP 2012 conference
Central extensions and Riemann-Roch theorem on algebraic surfaces
Creators: name: Osipov, D. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We study canonical central extensions of the general linear group of the ring of adeles on a smooth projective algebraic surface $X$ by means of the group of integers. By these central extensions and adelic transition matrices of a rank $n$ locally free sheaf of ${\mathcal O}_X$-modules we obtain the local (adelic) decomposition for the difference of Euler characteristics of this sheaf and the sheaf ${\mathcal O}_X^n$. Two various calculations of this difference lead to the Riemann-Roch theorem on $X$ (without the Noether formula).
description: 25 pages; minor chnages; to appear in Sbornik: Mathematics
Molecular dynamics of n-hexane: A quasi-elastic neutron scattering study on the bulk and spatially nanochannel-confined liquid
Creators: name: Hofmann, Tommy
name: Wallacher, Dirk
name: Mayorova, Maria
name: Zorn, Reiner
name: Frick, Bernhard
name: Huber, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present incoherent quasi-elastic neutron scattering measurements in a wavevector transfer range from 0.4 AA^{-1} to 1.6AA^{-1} on liquid n-hexane confined in cylindrical, parallel-aligned nanochannels of 6 nm mean diameter and 260 micrometer length in monolithic, mesoporous silicon. They are complemented with, and compared to, measurements on the bulk system in a temperature range from 50K to 250K. The time-of-flight spectra of the bulk liquid can be modeled by microscopic translational as well as fast localized rotational, thermally-excited, stochastic motions of the molecules. In the nano-confined state of the liquid, which was prepared by vapor condensation, we find two molecular populations with distinct dynamics, a fraction which is immobile on the time scale of 1ps to 100ps probed in our experiments and a second component with a self-diffusion dynamics slightly slower than observed for the bulk liquid. No hints of an anisotropy of the translational diffusion with regard to the orientation of the channels' long axes have been found. The immobile fraction amounts to about 5% at 250K, gradually increases upon cooling and exhibits an abrupt increase at 160K (20K below bulk crystallization), which indicates pore freezing
description: 10 pages, 7 figures
Towards an experimental realization of affinely transformed linearized QED vacuum via inverse homogenization
Creators: name: Mackay, Tom G.
name: Lakhtakia, Akhlesh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Within the framework of quantum electrodynamics (QED), vacuum is a nonlinear medium which can be linearized for a rapidly time-varying electromagnetic field with a small amplitude subjected to a magnetostatic field. The linearized QED vacuum is a uniaxial dielectric-magnetic medium for which the degree of anisotropy is exceedingly small. By implementing an affine transformation of the spatial coordinates, the degree of anisotropy may become sufficiently large as to be readily perceivable. The inverse Bruggeman formalism can be implemented to specify a homogenized composite material (HCM) which is electromagnetically equivalent to the affinely transformed QED vacuum. This HCM can arise from remarkably simple component materials; for example, two isotropic dielectric materials and two isotropic magnetic materials, randomly distributed as oriented spheroidal particles.
Exploring Counterfactual Explanations Through the Lens of Adversarial Examples: A Theoretical and Empirical Analysis
Creators: name: Pawelczyk, Martin
name: Agarwal, Chirag
name: Joshi, Shalmali
name: Upadhyay, Sohini
name: Lakkaraju, Himabindu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: As machine learning (ML) models become more widely deployed in high-stakes applications, counterfactual explanations have emerged as key tools for providing actionable model explanations in practice. Despite the growing popularity of counterfactual explanations, a deeper understanding of these explanations is still lacking. In this work, we systematically analyze counterfactual explanations through the lens of adversarial examples. We do so by formalizing the similarities between popular counterfactual explanation and adversarial example generation methods identifying conditions when they are equivalent. We then derive the upper bounds on the distances between the solutions output by counterfactual explanation and adversarial example generation methods, which we validate on several real-world data sets. By establishing these theoretical and empirical similarities between counterfactual explanations and adversarial examples, our work raises fundamental questions about the design and development of existing counterfactual explanation algorithms.
title: Case studies (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°12)
Creators: name: Ridde, Valery
name: Abdourahmane, Coulibaly
name: Gautier, Lara
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: Case studies consist of an in-depth analysis of one or more cases, using a variety of methods and theoretical approaches. The choice of cases (single or multiple) studied is crucial. Case studies are particularly suitable for studying the emergence and processes involved in policy implementation and for contributing to theory-based evaluations.
The inconsistency of linear dynamics and Born's rule
Creators: name: Mertens, Lotte
name: Wesseling, Matthijs
name: Vercauteren, Niels
name: Corrales-Salazar, Alonso
name: van Wezel, Jasper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Modern experiments using nanoscale devices come ever closer to bridging the divide between the quantum and classical realms, bringing experimental tests of objective collapse theories that propose alterations to Schrödinger's equation within reach. Such objective collapse theories aim to explain the emergence of classical dynamics in the thermodynamic limit and hence resolve the inconsistency that exists within the axioms of quantum mechanics. Here, we show that requiring the emergence of Born's rule for relative frequencies of measurement outcomes without imposing them as part of any axiom, implies that such objective collapse theories cannot be linear. Previous suggestions for a proof of the emergence of Born's rule in classes of problems that include linear objective collapse theories are analysed and shown to include hidden assumptions.
Nonlinear Dynamics in a Magnetic Josephson Junction
Creators: name: Hoffman, Silas
name: Blanter, Ya. M.
name: Tserkovnyak, Yaroslav
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically consider a Josephson junction formed by a ferromagnetic spacer with a strong spin-orbit interaction or a magnetic spin valve, i.e., a bilayer with one static and one free layer. Electron spin transport facilitates a nonlinear dynamical coupling between the magnetic moment and charge current, which consists of normal and superfluid components. By phenomenologically adding reactive and dissipative interactions (guided by structural and Onsager symmetries), we construct magnetic torques and charge pumping, whose microscopic origins are also discussed. A stability analysis of our coupled nonlinear systems generates a rich phase diagram with fixed points, limit cycles, and quasiperiodic states. Our findings reduce to the known phase diagrams for current-biased nonmagnetic Josephson junctions, on the one hand, and spin-torque driven magnetic films, on the other, in the absence of coupling between the magnetic and superconducting order parameters.
description: 8 pages, 5 figures
title: Hereditary multiple exostoses with chondrosarcoma transformation
Creators: name: Rueda De Eusebio, Álvaro
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: Musculoskeletal soft tissue
subject: CT
subject: Digital radiography
subject: MR
subject: Comparative studies
subject: Diagnostic procedure
subject: Calcifications / Calculi
subject: Neoplasia
subject: Tissue characterisation
subject: Clinical Cases

description: Clinical History: A 32-year-old male was referred to our Sarcoma Reference Centre regarding a growth in the right groin. The patient was otherwise asymptomatic. Physical exam showed vascular and nerve compression phenomena, with signs of venous stasis in the right lower limb and paraesthesia on the lateral aspect of the right thigh.

description: 32 years, male
title: Les études de cas (LIEPP Fiches méthodologiques / LIEPP Methods briefs n°11)
Creators: name: Ridde, Valery
name: Abdourahmane, Coulibaly
name: Gautier, Lara
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: La méthode des doubles différences est une méthode quantitative quasi-expérimentale permettant d’évaluer l’impact d’une intervention grâce à la constitution de groupes de comparaison et à la mesure de l’évolution d’un résultat entre un moment initial pré-intervention et un moment ultérieur où seulement un des deux groupes a reçu l’intervention. Cette méthode est très utile pour l’évaluation ex post de l’impact d’une intervention.
CARLA: A Python Library to Benchmark Algorithmic Recourse and Counterfactual Explanation Algorithms
Creators: name: Pawelczyk, Martin
name: Bielawski, Sascha
name: Heuvel, Johannes van den
name: Richter, Tobias
name: Kasneci, Gjergji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Counterfactual explanations provide means for prescriptive model explanations by suggesting actionable feature changes (e.g., increase income) that allow individuals to achieve favorable outcomes in the future (e.g., insurance approval). Choosing an appropriate method is a crucial aspect for meaningful counterfactual explanations. As documented in recent reviews, there exists a quickly growing literature with available methods. Yet, in the absence of widely available opensource implementations, the decision in favor of certain models is primarily based on what is readily available. Going forward - to guarantee meaningful comparisons across explanation methods - we present CARLA (Counterfactual And Recourse LibrAry), a python library for benchmarking counterfactual explanation methods across both different data sets and different machine learning models. In summary, our work provides the following contributions: (i) an extensive benchmark of 11 popular counterfactual explanation methods, (ii) a benchmarking framework for research on future counterfactual explanation methods, and (iii) a standardized set of integrated evaluation measures and data sets for transparent and extensive comparisons of these methods. We have open-sourced CARLA and our experimental results on Github, making them available as competitive baselines. We welcome contributions from other research groups and practitioners.
description: Accepted to NeurIPS Benchmark & Data Set Track