cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Initier les élèves du cycle 1 aux collectifs d'apprentissage.
title: Initier les élèves du cycle 1 aux collectifs d'apprentissage.
titleType: AlternativeTitle
Creators: name: Moessner, Marine
name: Paillard, Mélanie
Publisher: name: Unknown
Year: 0
Subjects: subject: Éducation dialogique
subject: collectif d’apprentissage
subject: discours exploratoire
subject: coopération
subject: rôle de l’enseignant-e
subject: modelage

description: Dans le contexte scolaire actuel, le collectif d’apprentissage n’est que rarement choisi comme modalité d’enseignement, alors, qu’il permettrait aux enfants de mener un dialogue productif propice aux apprentissages. En effet, dès son plus jeune âge, l’élève est souvent poussé à fournir la “réponse souhaitée“ par l’enseignant-e. Ainsi, l’enfant n’est que rarement encouragé à verbaliser et à réfléchir sur les étapes cognitives qui le mènent à la réponse. Pour permettre aux élèves de s’entraîner à réfléchir ensemble afin d’atteindre un but commun et à verbaliser leur pensée, l’enseignant-e instaure un espace de parole dans un cadre donné. Afin d’initier les élèves au discours exploratoire, l’enseignant-e modélise les mouvements de parole dialogiques (s’écouter, exprimer une idée et/ou son opinion, poser des questions, etc…). Le but de ce mémoire est d’observer et de relever les différents types d’interactions qui mènent à un dialogue constructif. Ainsi, notre attention s’est portée sur le rôle de l’enseignant-e, la coopération, la conversation exploratoire, l’éducation dialogique ainsi que les habiletés développées par les élèves dans les collectifs d’apprentissage. En observant les différents types d’interactions utilisés par nos élèves âgés de 4 à 8 ans, lors des entraînements et des différentes activités par petits groupes, nous avons constaté que le dialogue s’enrichissait au fil des mises en œuvre. De plus, nous avons remarqué que les enfants, au sein des collectifs d’apprentissages, développent de manière autonome des compétences inattendues. Les pistes abordées et suggérées dans ce travail de recherche devraient permettre à chaque enseignant-e de trouver une voie adaptable à son contexte de classe et aux besoins de ses élèves pour entrer dans ce type d’enseignement différent. Cette recherche représentera peut-être une incitation et/ou un encouragement pour les enseignant-e-s à choisir les collectifs d’apprentissage afin de développer des habiletés sociales, créatives et cognitives chez leurs élèves.
Ghost-free infinite-derivative dilaton gravity in two dimensions
Creators: name: Vinckers, Ulrich K. Beckering
name: de la Cruz-Dombriz, Álvaro
name: Kolář, Ivan
name: Torralba, Francisco J. Maldonado
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the ghost-free infinite-derivative extensions of the Spherically-Reduced Gravity (SRG) and Callan-Giddings-Harvey-Strominger (CGHS) theories in two space-time dimensions. For the case of SRG, we specify the Schwarzschild-type gauge and diagonalise the quadratic action for field perturbations after taking the background fields to be those of the flat-space solution with a linear dilaton. Using the obtained diagonalisation, we construct ghost-free infinite-derivative modifications of the SRG theory. In the context of this modified SRG theory we derive a non-local modification of the linearised spherically-reduced Schwarzschild solution. For the case of CGHS gravity, we work in the conformal gauge and diagonalise the quadratic action associated with this theory for a general background solution. Using these results, we construct the ghost-free infinite-derivative modifications of the CGHS theory and examine non-local modifications to the linearised CGHS black-hole solution.
description: 21 pages, 5 figures, version accepted for publication in PRD
Adsorption of cadmium (II) from aqueous solutions by coconut dregs residue: Kinetic and thermodynamic studies
Creators: name: Madawala, Chamika K.
name: Jahinge, Tiron H. L.
name: Rathnayake, Kavisha T.
name: Perera, Bupani Asiri
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified

description: In this study, the potential of coconut dregs residue (CDR) as a low-cost biosorbent for the removal of cadmium (II) from aqueous solutions was investigated. The removal efficiency of Cd (II) by CDR was tested through batch adsorption experiments under different conditions including contact time, initial pH, initial Cd (II) concentration, adsorbent dose, and temperature. The optimal pH for removal was found to be 7.0 where an 87.6% removal was achieved with a metal concentration of 25 ppm, a 0.5 g/100.00 cm3 adsorbent dosage, and a 250–500 µm particle size within 120 minutes at 303 K. The Freundlich isotherm model was employed to explain the adsorption process, while the pseudo-second-order model proved to be the best-fit kinetic model. Results showed that the Gibbs free energy change in Cd (II) adsorption was −5.4 kJ mol−1 indicating a spontaneous process. The raw CDR exhibited an adsorption capacity of 4.31 mg/g. Scanning electron microscopic (SEM) analysis revealed the presence of tubular voids which contributed to the adsorption process. Additionally, activated carbon prepared from CDR showed a higher removal efficiency of 95.6% for Cd (II) as compared to the raw CDR biosorbent.
title: Soziale Medien als psychosoziale Ressource in Krisen und Katastrophen
Creators: name: Müller, Francesca
name: Tomczyk, Samuel
name: Fathi, Ramian
name: von Berg, Marie-Luise
name: Tutt, Lars
name: Fiedrich, Frank
Publisher: name: GI
Year: 2023

description: Die zunehmende Nutzung sozialer Medien birgt neue Herausforderungen und Möglichkeiten für die Lageerkundung im Krisenmanagement. Das Hauptziel dieses Beitrags besteht darin, die Sicht der Bevölkerung auf die Nutzung sozialer Medien zur Mitteilung der individuellen psychischen Verfassung zu beleuchten. Aufbauend auf zwei unabhängig voneinander durchgeführten Umfragen werden eine Reihe von Faktoren, bspw. Alter und Geschlecht, hinsichtlich ihres Einflusses auf die Einstellungen zum Mitteilungsverhalten berücksichtigt. Die Stichproben umfassen insgesamt 1.888 Personen aus Deutschland, darunter unmittelbar Betroffene der Flutkatastrophe 2021 im Kreis Euskirchen, Nordrhein-Westfalen. Die Ergebnisse deuten darauf hin, dass die Nutzung von sozialen Medien im Alltag von der Nutzung in Krisen- und Katastrophensituationen abweicht. So werden soziale Medien bspw. als Ressource bei Traurigkeit im Alltag genutzt, während dies für Krisen- und Katastrophensituationen nicht gezeigt werden konnte. Zudem konnte in der Stichprobe ohne Ereignisbezug festgestellt werden, dass jüngeren Menschen die öffentliche Kommunikation bei einem Gefühl allein zu sein mehr hilft als älteren, während sich für die Flutkatastrophe 2021 ein umgekehrter Zusammenhang zeigt. Vor dem Hintergrund der Erhebungen scheint es demnach sinnvoll, Krisenstäbe und Einsatzleitungen mit dem Verhalten unterschiedlicher Bevölkerungsgruppen in sozialen Medien vertraut zu machen. Auch wenn öffentlich verfügbare Daten sozialer Medien allein keine hinreichende Basis zur Erstellung eines psychosozialen Lagebildes darstellen, bieten sie vor allem Potenzial zur Einschätzung der Selbsthilfefähigkeit der Bevölkerung.
title: Non-traumatic knee pathology in adults: A pictorial review
Creators: name: Santos Salas, Xiomara
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Pathology
subject: Diagnostic procedure
subject: Comparative studies
subject: MR
subject: CT
subject: Conventional radiography
subject: Musculoskeletal soft tissue
subject: Musculoskeletal joint
subject: Musculoskeletal bone

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To illustrate the spectrum of non-traumatic knee disorders in adult patients. To present the different techiques: plain X-rays, Ultrasonograpy, Computed Tomography and Magnetic Resonance Imaging, available for the study of knee pathology and their...
Size-Dependent Grain Boundary Scattering in Topological Semimetals
Creators: name: Lanzillo, Nicholas A.
name: Bajpai, Utkarsh
name: Garate, Ion
name: Chen, Ching-Tzu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We assess the viability of topological semimetals for application in advanced interconnect technology, where conductor size is on the order of a few nanometers and grain boundaries are expected to be prevalent. We investigate the electron transport properties and grain boundary scattering in thin films of the topological semimetals CoSi and CoGe using first-principles calculations combined with the Non-Equilibrium Green's Function (NEGF) technique. Unlike conventional interconnect metals like Cu and Al, we find that CoSi and CoGe conduct primarily through topologically-protected surface states in thin film structures even in the presence of grain boundaries. The area-normalized resistance decreases with decreasing film thickness for CoSi and CoGe thin films both with and without grain boundaries; a trend opposite to that of the conventional metals Cu and Al. The surface-dominated transport mechanisms in thin films of topological semimetals with grain boundaries demonstrates a fundamentally new paradigm of the classical resistivity size-effect, and suggests that these materials may be promising candidates for applications as nano-interconnects where high electrical resistivity acts as a major bottleneck limiting semiconductor device performance.
description: 18 pages, 9 figures. To be published in Physical Review Applied
title: Imaging of infectious sacroiliitis
Creators: name: FENDRI, HELA
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Bones
subject: CT
subject: MR
subject: Biopsy
subject: Diagnostic procedure
subject: Infection
subject: Pathology

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Infectious sacroiliitis (ISI) is an uncommon septic arthritis. The diagnosis of ISI is difficult due to the poor specificity of clinic signs and symptoms. Delay in diagnosis may lead to several complications, such as abscess or sequestration...
title: Application of dual-energy CT (DECT) in abdominal imaging besides urinary calculi: Pearls and Pitfalls
Creators: name: Gehweiler, Julian
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Education and training
subject: Technical aspects
subject: CT-Quantitative
subject: CT
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Show clinical applications of dual-energy CT in abdominal imaging. Highlight possible pitfalls in the interpretation of dual-energy...
Square skyrmion crystal in centrosymmetric systems with locally inversion-asymmetric layers
Creators: name: Hayami, Satoru
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate an instability toward a square-lattice formation of magnetic skyrmions in centrosymmetric layered systems. By focusing on a bilayer square-lattice structure with the inversion center at the interlayer bond instead of the atomic site, we numerically examine the stability of the square skyrmion crystal based on an effective spin model with the momentum-resolved interaction in the ground state through the simulated annealing. As a result, we find that a layer-dependent staggered Dzyaloshinskii-Moriya interaction built in the lattice structure becomes the origin of the square skyrmion crystal in an external magnetic field irrespective of the sign of the interlayer exchange interaction. The obtained square skyrmion crystal is constituted of the skyrmion crystals with different helicities in each layer due to the staggered Dzyaloshinskii-Moriya interaction. Furthermore, we show that the interplay between the staggered Dzyaloshinskii-Moriya interaction and the interlayer exchange interaction gives rise to a double-$Q$ state with a uniform component of the scalar chirality in the low-field region. The present results provide another way of stabilizing the square skyrmion crystal in centrosymmetric magnets, which will be useful to explore further exotic topological spin textures.
description: 22 pages, 9 figures; to appear in JPCM. arXiv admin note: text overlap with arXiv:2112.07072
title: Classifying Crowdsouring Platform Users' Engagement Behaviour using Machine Learning and XAI
Creators: name: Imam, Sana Hassan
name: Metz, Christopher Alexander
name: Hornuf, Lars
name: Drechsler, Rolf
Publisher: name: GI
Year: 2023

description: Crowdsourcing platforms connect companies with heterogeneous users to create innovation ecosystems. However, platforms often have difficulty keeping users active. User engagement – the participation, interaction, and commitment among online users engaging in collaborative activities – is crucial to the continued success of these platforms. This paper presents a new approach to predicting whether a user will engage with online idea crowdsourcing platforms as a short-term or long-term user, applying a machine learning model that boasts 96% accuracy. By utilizing Explainable Artificial Intelligence (XAI)-SHapley Additive exPlanations (SHAP), we propose a framework for future research into user engagement patterns and trends across different contexts. This framework can assist platform administrators in recognizing and rewarding valuable users, ultimately leading to the lasting success of online idea crowdsourcing platforms.
Accurate, fully-automated NMR spectral profiling for metabolomics
Creators: name: Ravanbakhsh, Siamak
name: Liu, Philip
name: Bjorndahl, Trent
name: Mandal, Rupasri
name: Grant, Jason R.
name: Wilson, Michael
name: Eisner, Roman
name: Sinelnikov, Igor
name: Hu, Xiaoyu
name: Luchinat, Claudio
name: Greiner, Russell
name: Wishart, David S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Many diseases cause significant changes to the concentrations of small molecules (aka metabolites) that appear in a person's biofluids, which means such diseases can often be readily detected from a person's "metabolic profile". This information can be extracted from a biofluid's NMR spectrum. Today, this is often done manually by trained human experts, which means this process is relatively slow, expensive and error-prone. This paper presents a tool, Bayesil, that can quickly, accurately and autonomously produce a complex biofluid's (e.g., serum or CSF) metabolic profile from a 1D1H NMR spectrum. This requires first performing several spectral processing steps then matching the resulting spectrum against a reference compound library, which contains the "signatures" of each relevant metabolite. Many of these steps are novel algorithms and our matching step views spectral matching as an inference problem within a probabilistic graphical model that rapidly approximates the most probable metabolic profile. Our extensive studies on a diverse set of complex mixtures, show that Bayesil can autonomously find the concentration of all NMR-detectable metabolites accurately (~90% correct identification and ~10% quantification error), in <5minutes on a single CPU. These results demonstrate that Bayesil is the first fully-automatic publicly-accessible system that provides quantitative NMR spectral profiling effectively -- with an accuracy that meets or exceeds the performance of trained experts. We anticipate this tool will usher in high-throughput metabolomics and enable a wealth of new applications of NMR in clinical settings. Available at http://www.bayesil.ca.
title: PET/CT in non-oncological thoracic diseases: not all that shines is cancer!
Creators: name: Farias, Lucas
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Thorax
subject: Lung
subject: Hybrid Imaging
subject: PET-CT
subject: CT-High Resolution
subject: PET
subject: Normal variants
subject: Contrast agent-other
subject: Drugs / Reactions
subject: Inflammation
subject: Parasites

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The purpose of this essay is to: Review structural and functional imaging abnormalities on positron emission tomography / computed tomography (PET/CT); Correlate important findings with the clinical, anatomy and pathogenesis of non-oncological...
Anomalous thermal expansion in a CuAl2-type superconductor CoZr2
Creators: name: Mizuguchi, Yoshikazu
name: Kasem, Md. Riad
name: Ikeda, Yoichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this work, we show that the CuAl2-type superconductor CoZr2 and alloyed systems exhibit anomalous thermal expansion in a wide temperature range. We performed neutron powder diffraction and X-ray powder diffraction on CoZr2 and observed remarkably anisotropic thermal expansion with a c-axis negative thermal expansion constant of αc < -15 μK-1 in a wide temperature range of T = 50-573 K. With decreasing temperature, the lattice constant a decreases, while the lattice constant c continuously increases in CoZr2. The origin of the anisotropic shrinkage/expansion of the a-axis/c-axis by cooling is explained by the small change in the Co-Zr bond and the systematic decrease in the Zr-Co-Zr angle. Similar thermal expansion was observed in alloyed systems, (Fe,Co,Ni)Zr2 and (Fe,Co,Ni,Rh,Ir)Zr2, which suggests that the phenomenon is common feature in the TrZr2 system. We propose that zero-thermal expansion metals would be achieved by optimizing the contrasting thermal expansion of a-axis and c-axis in TrZr2.
description: 17 pages, 5 figures, supplementary data
Limite e possibilità del λόγος. Metodo dialettico e potenzialità teoretiche della contraddizione nel De Primis Principiis di Damascio
Creators: name: Grimaldi, Ilaria
Publisher: name: Universita degli studi di Salerno
Year: 2018
Subjects: subject: M-FIL/07 STORIA DELLA FILOSOFIA ANTICA
subject: Ineffabilità
subject: Indicazione
subject: Didattica aporetica

description: 2016 - 2017
description: This dissertation discusses Damascius’ De Primis Principiis, the main writing of the last scholarch of the Athenian Platonic school in the sixth century AD. The aim of the work is to propose a interpretation of the aporetic treatise capable of balancing both the ‘dialectical-negative’ moment and the 'dialectic-positive' moment of Damascian metaphysical theorization. The first moment is clearly implicit in the denunciation of πέρας τοῦ λόγου ('limit of thought-language'), whereas the second is linked to the δύναμις that the thought-language possesses and that demonstrates its feasibility and possibility also concerning the topic of the ineffability of the Principles. .. [edited by Author]
description: La presente tesi di ricerca ha in oggetto il De Primis Principiis di Damascio, filosofo neoplatonico del VI secolo d.C., ultimo scolarca della Scuola platonica di Atene. L’obiettivo del lavoro consiste nel proporre una lettura del trattato aporetico capace di bilanciare tra loro il momento ‘dialettico-negativo’ della teorizzazione metafisica damasciana – chiaramente implicito nella denuncia del πέρας τοῦ λόγου ( ‘limite del pensiero-linguaggio’) – e il momento ‘dialetticopositivo’ – legato alla δύναμις che il pensiero-linguaggio possiede e che ne dimostra l’operatività e la possibilità anche relativamente al tema dell’ineffabilità dei Principi. .. [a cura dell'Autore]
title: Contribution of Dual-Energy CT (DECT) to differential diagnosis of chronic pulmonary hypertension (CPH)
Creators: name: Oganesyan, Anait
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Anatomy
subject: Thorax
subject: CT-Angiography
subject: Diagnostic procedure
subject: Arteriovenous malformations

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To demonstrate the role of DECT for differential diagnosis in patients presenting with syndrome of chronic pulmonary...
title: Exploring the Definition of Small Data Collected with HCI Methods and Used for ML
Creators: name: Weigand, Anna C.
name: Rauschenberger, Maria
Publisher: name: GI
Year: 2023

description: In this position paper, we explore the characteristics of small data sets within the domain of Human-Computer Interaction (HCI), where Machine Learning (ML) techniques are applied. We investigate the definition of small data sets in HCI experiments, the challenges and opportunities associated with using ML with small data, and the potential applications of small data in various contexts. Drawing on a systematic literature review and AI chatbot queries, we provide insights about small HCI data sets used for ML.
Quantum interference in a superconductor-${\mathrm{MnBi}}_{2}{\mathrm{Te}}_{4}$-superconductor Josephson junction
Creators: name: Li, Yu-Hang
name: Cheng, Ran
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the transport properties of a Josephson junction consisting of two identical $s$-wave superconductors separated by an even-layer ${\mathrm{MnBi}}_{2}{\mathrm{Te}}_{4}$ (MBT). Using recursive Green's function method, we calculate the supercurrent in the presence of a perpendicular magnetic field and find that its quantum interference exhibits distinct patterns when the MBT is in different magnetic states. In the antiferromagnetic state, the MBT is an axion insulator supporting an extended "hinge" supercurrent, which leads to a sinusoidal interference pattern decaying with the field strength. In the ferromagnetic state, the MBT is a Chern insulator and the unbalanced chiral supercurrents on opposite edges give rise to a highly asymmetric interference pattern. If the MBT turns into a metal as the Fermi level is tuned into the conduction band, the interference exhibits a Fraunhofer pattern due to the uniformly distributed bulk supercurrent. Our work unravels a strong indicator to identify different phases in the MBT and can be verified directly by experiments.
Universal profile of the vortex condensate in two-dimensional turbulence
Creators: name: Laurie, Jason
name: Boffetta, Guido
name: Falkovich, Gregory
name: Kolokolov, Igor
name: Lebedev, Vladimir
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An inverse turbulent cascade in a restricted two-dimensional periodic domain leads to the creation of condensate -- a pair of coherent system-size vortices. We perform extensive numerical simulations of this system and carry on detailed theoretical analysis based upon momentum and energy exchanges between the turbulence fluctuations and the mean coherent condensate (vortices). The theory predicts the vortex profile and amplitude which perfectly agree with the numerical data.
description: 4 pages, 7 figures
title: Correlation between imaging tests and ERCP in the detection of choledocholithiasis and cost analysis of the ASGE guide
Creators: name: Beltrán Gállego, Alba
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Economics
subject: Endoscopy
subject: Ultrasound
subject: CT
subject: Biliary Tract / Gallbladder
subject: Abdomen
subject: MR-Cholangiography

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To compare the findings of magnetic resonance cholangiography (MRCP), ultrasound and computed tomography (CT) with respect to endoscopic retrograde cholangiopancreatography (ERCP), considered the gold standard, in the detection of...
Chemical abundances of the metal-poor horizontal-branch stars CS 22186-005 and CS 30344-033
Creators: name: Caliskan, S.
name: Caffau, E.
name: Bonifacio, P.
name: Christlieb, N.
name: Monaco, L.
name: Beers, T. C.
name: Albayrak, B.
name: Sbordone, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on a chemical-abundance analysis of two very metal-poor horizontal-branch stars in the Milky Way halo: CS 22186-005 ([Fe/H]=-2.70) and CS 30344-033 ([Fe/H]=-2.90). The analysis is based on high-resolution spectra obtained at ESO, with the spectrographs HARPS at the 3.6 m telescope, and UVES at the VLT. We adopted one-dimensional, plane-parallel model atmospheres assuming local thermodynamic equilibrium. We derived elemental abundances for 13 elements for CS 22186-005 and 14 elements for CS 30344-033. This study is the first abundance analysis of CS 30344-033. CS 22186-005 has been analyzed previously, but we report here the first measurement of nickel (Ni; Z = 28) for this star, based on twenty-two NiI lines ([Ni/Fe]=-0.21$\pm$0.02); the measurement is significantly below the mean found for most metal-poor stars. Differences of up to 0.5 dex in [Ni/Fe] ratios were determined by different authors for the same type of stars in the literature, which means that it is not yet possible to conclude that there is a real intrinsic scatter in the [Ni/Fe] ratios. For the other elements for which we obtained estimates, the abundance patterns in these two stars match the Galactic trends defined by giant and turnoff stars well. This confirms the value of horizontal-branch stars as tracers of the chemical properties of stellar populations in the Galaxy. Our radial velocities measurements for CS 22186-005 differ from previously published measurements by more than the expected statistical errors. More measurements of the radial velocity of this star are encouraged to confirm or refute its radial velocity variability.
title: Benefits of exposure to natural environments on time perception in an Immersive Virtual Reality Environment
Creators: name: Micillo, Luigi
name: Pazzaglia, Francesca
name: Mioni, Giovanna
Publisher: name: GI
Year: 2023

description: The exposure to natural environments can host beneficial effects on our attention, executive function, stress, and mood. Quite often another observation arises when individuals are exposed to nature, their perception of time changes. The present work aims at investigating whether the time spent in nature subjectively differs from the time spent in a urban environment when those are presented in a Virtual Reality Environments. To do so, we exposed 46 participants to have a virtual walk either in a natural or urban environment and to complete three temporal tasks. Our results show that when exposed to a natural environment, participants were more accurate in their timing performances suggesting that the complexity of the urban environment may activate more attentional resources that are diverted from the timing task leading to an overestimation in retrospective tasks and an overestimation in prospective ones.
title: Safe AND Secure Infrastructures? - Studying Human Aspects of Safety and Security Incidents with Experts from both Domains
Creators: name: Zimmermann, Verena
name: Haunschild, Jasmin
name: Stöver, Alina
name: Gerber, Nina
Publisher: name: GI
Year: 2023

description: In today’s digitalized and interconnected world, the traditionally distinct concepts security and safety are increasingly intertwined. For example, a cyber attack on a hospital can negatively impact the patients’ physical safety. Thus, security research and practice should consider these interactions. To explore human-related challenges at the intersection of safety and security, we conducted three focus group workshops with N= 16 experts from both domains. We introduced two scenarios leading to a power outage, one with a safety-related cause (snow storm) and one with a security-related cause (cyber attack). The experts discussed interactions, differences and parallels in coping with the scenarios. Additionally, potential solutions for building response capacity by including volunteers were explored. The findings indicate similar consequences resulting from the safety- vs. security-related incidents. However, the experts identified relevant differences in the challenges preparing for and coping with the scenarios. While security-related challenges included the incalculable time horizon, impact and cascading effects as well as lack of emergency plans and training, safety challengesmainly concerned accessibility of the affected area. The implications for future work are discussed.
title: Efficacy of mechanical vertebral augmentation systemin patients with thoraco-lumbar vertebral fractures from multiple myeloma
Creators: name: Iozzelli, Andrea
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Interventional non-vascular
subject: Neuroradiology spine
subject: Musculoskeletal spine
subject: Fluoroscopy
subject: Vertebroplasty
subject: Neoplasia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Multiple myeloma (MM) is a hematologic tumor that proliferates into the inner structure of bones, with marked tropism for vertebral bodies, producing lytic lesions, tumor infiltration, spongious bone reabsorption, therefore resulting in vertebral...
Chemical Diversity in Protoplanetary Disks and Its Impact on the Formation History of Giant Planets
Creators: name: Pacetti, Elenia
name: Turrini, Diego
name: Schisano, Eugenio
name: Molinari, Sergio
name: Fonte, Sergio
name: Politi, Romolo
name: Hennebelle, Patrick
name: Klessen, Ralf
name: Testi, Leonardo
name: Lebreuilly, Ugo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Giant planets can interact with multiple and chemically diverse environments in protoplanetary discs while they form and migrate to their final orbits. The way this interaction affects the accretion of gas and solids shapes the chemical composition of the planets and of their atmospheres. Here we investigate the effects of different chemical structures of the host protoplanetary disc on the planetary composition. We consider both scenarios of molecular (inheritance from the pre-stellar cloud) and atomic (complete chemical reset) initial abundances in the disc. We focus on four elemental tracers of different volatility: C, O, N, and S. We explore the entire extension of possible formation regions suggested by observations by coupling the disc chemical scenarios with N-body simulations of forming and migrating giant planets. The planet formation process produces giant planets with chemical compositions significantly deviating from that of the host disc. We find that the C/N, N/O, and S/N ratios follow monotonic trends with the extent of migration. The C/O ratio shows a more complex behaviour, dependent on the planet accretion history and on the chemical structure of the formation environment. The comparison between S/N* and C/N* (where * indicates normalisation to the stellar value), constrains the relative contribution of gas and solids to the total metallicity. Giant planets whose metallicity is dominated by the contribution of the gas are characterised by N/O* > C/O* > C/N* and allow for constraining the disc chemical scenario. When the planetary metallicity is instead dominated by the contribution of the solids we find that C/N* > C/O* > N/O*.
description: 27 pages, 10 figures, 1 table. Published in The Astrophysical Journal
The extraordinary far-infrared variation of a protostar: Herschel/PACS observations of LRLL54361
Creators: name: Balog, Zoltan
name: Muzerolle, James
name: Flaherty, Kevin
name: Detre, Ors H.
name: Bouwmann, Jeroen
name: Furlan, Elise
name: Gutermuth, Rob
name: Juhasz, Attila
name: Bally, John
name: Nielbock, Markus
name: Klaas, Ulrich
name: Krause, Oliver
name: Henning, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report Herschel/PACS photometric observations at 70 μm and 160 μm of LRLL54361 - a suspected binary protostar that exhibits periodic (P=25.34 days) flux variations at shorter wavelengths (3.6 μm and 4.5 μm) thought to be due to pulsed accretion caused by binary motion. The PACS observations show unprecedented flux variation at these far-infrared wavelengths that are well cor- related with the variations at shorter wavelengths. At 70 μm the object increases its flux by a factor of six while at 160μm the change is about a factor of two, consistent with the wavelength dependence seen in the far-infrared spectra. The source is marginally resolved at 70 μm with varying FWHM. Deconvolved images of the sources show elongations exactly matching the outflow cavities traced by the scattered light observations. The spatial variations are anti-correlated with the flux variation indicating that a light echo is responsible for the changes in FWHM. The observed far-infrared flux variability indicates that the disk and en- velope of this source is periodically heated by the accretion pulses of the central source, and suggests that such long wavelength variability in general may provide a reasonable proxy for accretion variations in protostars.
description: 20 pages, 4 figures accepted for publication in ApJ Letters
The density matrix renormalization group for ab initio quantum chemistry
Creators: name: Wouters, Sebastian
name: Van Neck, Dimitri
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: During the past 15 years, the density matrix renormalization group (DMRG) has become increasingly important for ab initio quantum chemistry. Its underlying wavefunction ansatz, the matrix product state (MPS), is a low-rank decomposition of the full configuration interaction tensor. The virtual dimension of the MPS, the rank of the decomposition, controls the size of the corner of the many-body Hilbert space that can be reached with the ansatz. This parameter can be systematically increased until numerical convergence is reached. The MPS ansatz naturally captures exponentially decaying correlation functions. Therefore DMRG works extremely well for noncritical one-dimensional systems. The active orbital spaces in quantum chemistry are however often far from one-dimensional, and relatively large virtual dimensions are required to use DMRG for ab initio quantum chemistry (QC-DMRG). The QC-DMRG algorithm, its computational cost, and its properties are discussed. Two important aspects to reduce the computational cost are given special attention: the orbital choice and ordering, and the exploitation of the symmetry group of the Hamiltonian. With these considerations, the QC-DMRG algorithm allows to find numerically exact solutions in active spaces of up to 40 electrons in 40 orbitals.
description: 24 pages; 10 figures; based on arXiv:1405.1225; invited review for European Physical Journal D
title: In-vivo and ex-vivo beta-amyloid load detection in Alzheimer’s Disease using R2* and quantitative susceptibility mapping (QSM) at ultra-high magnetic field: comparison to histology
Creators: name: Tuzzi, Elisa
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Anatomy
subject: MR
subject: Imaging sequences
subject: Dementia

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Alzheimer’s Disease (AD) is the most common cause of dementia worldwide. So far univocal diagnosis of AD is only achieved by postmortem histology. Beta-Amyloid plaques are known to be classical hallmarks of the post mortem Alzheimer´s Disease...
Discovery of a W UMa type binary GSC 03553-00845
Creators: name: Guo, D. -F.
name: Li, K.
name: Hu, S. -M.
name: Jiang, Y. -G.
name: Gao, D. -Y.
name: Chen, X.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: When observing the transiting extrasolar planets, we discovered a new W UMa type binary GSC 03553-00845. Following observation was carried out using the 1m telescope at Weihai Observatory of Shandong University. Complete BVR light curves were determined. Using the W-D program, we analyzed the light curves. Photometric solution reveals that GSC 03553-00845 is a W-subtype W UMa type binary with a mass ratio of q=2.904, it is an overcontact binary system by a contact degree of f=29.5% with a small temperature difference between the components (ΔT=206 K indicating a good thermal contact between the components. More observation of GSC 03553-00845 is needed in order to analyze the light curve variation and orbital period change.
description: Accepted by PASJ
The (de)biasing effect of GAN-based augmentation methods on skin lesion images
Creators: name: Mikołajczyk, Agnieszka
name: Majchrowska, Sylwia
name: Limeros, Sandra Carrasco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: New medical datasets are now more open to the public, allowing for better and more extensive research. Although prepared with the utmost care, new datasets might still be a source of spurious correlations that affect the learning process. Moreover, data collections are usually not large enough and are often unbalanced. One approach to alleviate the data imbalance is using data augmentation with Generative Adversarial Networks (GANs) to extend the dataset with high-quality images. GANs are usually trained on the same biased datasets as the target data, resulting in more biased instances. This work explored unconditional and conditional GANs to compare their bias inheritance and how the synthetic data influenced the models. We provided extensive manual data annotation of possibly biasing artifacts on the well-known ISIC dataset with skin lesions. In addition, we examined classification models trained on both real and synthetic data with counterfactual bias explanations. Our experiments showed that GANs inherited biases and sometimes even amplified them, leading to even stronger spurious correlations. Manual data annotation and synthetic images are publicly available for reproducible scientific research.
description: Accepted to MICCAI2022
ImpNet: Programming Software-Defied Networks Using Imperative Techniques
Creators: name: El-Zawawy, Mohamed A.
name: AlSalem, Adel I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Programming Languages (cs.PL)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Software and hardware components are basic parts of modern networks. However the software compo- nent is typical sealed and function-oriented. Therefore it is very difficult to modify these components. This badly affected networking innovations. Moreover, this resulted in network policies having complex interfaces that are not user-friendly and hence resulted in huge and complicated flow tables on physical switches of networks. This greatly degrades the network performance in many cases. Software-Defined Networks (SDNs) is a modern architecture of networks to overcome issues mentioned above. The idea of SDN is to add to the network a controller device that manages all the other devices on the network including physical switches of the network. One of the main tasks of the managing process is switch learning; achieved via programming physical switches of the network by adding or removing rules for packet-processing to/from switches, more specifically to/from their flow tables. A high-level imperative network programming language, called ImpNet, is presented in this paper. ImpNet enables writing efficient, yet simple, and powerful programs to run on the controller to control all other network devices including switches. ImpNet is compositional, simply-structured, expressive, and more importantly imperative. The syntax of ImpNet together two types of operational semantics to contracts of ImpNet are presented in the paper. The proposed semantics are of the static and dynamic types. Two modern application programmed using ImpNet are shown in the paper as well. The semantics of the applications are shown in the paper also.
description: 12 pages, 12 figures, extended and revised version of reference [22] in the paper. arXiv admin note: substantial text overlap with arXiv:1403.8028
Mathematical models in drug delivery.pdf
Creators: name: Soltani, Ali
Publisher: name: figshare
Year: 2023
Subjects: Other health sciences not elsewhere classified
Nanomaterials
Other mathematical sciences not elsewhere classified
Pharmaceutical delivery technologies
Pharmaceutical sciences
Basic pharmacology
Pharmacology and pharmaceutical sciences not elsewhere classified
Macromolecular materials
Nanochemistry
Polymerisation mechanisms
Supramolecular chemistry
Macromolecular and materials chemistry not elsewhere classified
Chemical engineering design

description: One of the major challenges to be addressed in the future is the combination of mechanistic theories describing drug release out of the delivery systems with mathematical models quantifying the subsequent drug transport within the human body in a realistic way. Ideally, the effects of the design parameters of the dosage form on the resulting drug concentration time profiles at the site of action and the pharmacodynamic effects will become predictable.
The Complete Barrett-Crane Model and its Causal Structure
Creators: name: Jercher, Alexander F.
name: Oriti, Daniele
name: Pithis, Andreas G. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The causal structure is a quintessential element of continuum spacetime physics and needs to be properly encoded in a theory of Lorentzian quantum gravity. Established spin foam (and tensorial group field theory (TGFT)) models mostly work with relatively special classes of Lorentzian triangulations (e.g. built from spacelike tetrahedra only), obscuring the explicit implementation of the local causal structure at the microscopic level. We overcome this limitation and construct a full-fledged model for Lorentzian quantum geometry the building blocks of which include spacelike, lightlike and timelike tetrahedra. We realize this within the context of the Barrett-Crane TGFT model. Following an explicit characterization of the amplitudes via methods of integral geometry, and the ensuing clear identification of local causal structure, we analyze the model's amplitudes with respect to its (space)time-orientation properties and provide also a more detailed comparison with the framework of causal dynamical triangulations (CDT).
description: 40 + 14 pages, 7 figures
Minimal unitary representation of 5d superconformal algebra F(4) and AdS_6/CFT_5 higher spin (super)-algebras
Creators: name: Fernando, Sudarshan
name: Gunaydin, Murat
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the minimal unitary representation (minrep) of SO(5,2), obtained by quantization of its geometric quasiconformal action, its deformations and supersymmetric extensions. The minrep of SO(5,2) describes a massless conformal scalar field in five dimensions and admits a unique "deformation" which describes a massless conformal spinor. Scalar and spinor minreps of SO(5,2) are the 5d analogs of Dirac's singletons of SO(3,2). We then construct the minimal unitary representation of the unique 5d superconformal algebra F(4) with the even subalgebra SO(5,2) X SU(2). The minrep of F(4) describes a massless conformal supermultiplet consisting of two scalar and one spinor fields. We then extend our results to the construction of higher spin AdS_6/CFT_5 (super)-algebras. The Joseph ideal of the minrep of SO(5,2) vanishes identically as operators and hence its enveloping algebra yields the AdS_6/CFT_5 bosonic higher spin algebra directly. The enveloping algebra of the spinor minrep defines a "deformed" higher spin algebra for which a deformed Joseph ideal vanishes identically as operators. These results are then extended to the construction of the unique higher spin AdS_6/CFT_5 superalgebra as the enveloping algebra of the minimal unitary realization of F(4) obtained by the quasiconformal methods.
title: 6th International Workshop "Gam-R – Gamification Reloaded"
Creators: name: Mazarakis, Athanasios
name: Voit, Thomas
Publisher: name: GI
Year: 2023
Subjects: subject: Gamification
subject: Game-based Learning
subject: Game-Based Learning
subject: Serious Games
subject: Pervasive Games

description: The 6th "Gam-R - Gamification Reloaded" series is a regular international workshop on gamification and related topics such as serious games, game-based learning, or games with a purpose, to name a few. Researchers and practitioners are invited to present and discuss new research ideas during the workshop. Experts can then discuss the accepted papers during the workshop. This allows the community to provide feedback to the authors for future projects. Accepted papers will be published in the open-access GI Digital Library and are indexed by Google Scholar and others. We accept submissions on the following topics, although this is not an exhaustive list: * Artificial Intelligence (AI) and Machine Learning (ML) * Open Science and Citizen Science * Augmented (AR), Virtual (VR), and Mixed Reality (MR) * Internet of Things (IoT) * Analog and Hybrid Gamification * Gamification for Individuals with Disabilities * Ethical Aspects of Gamification * Sustainability This list represents emerging gamification application fields. Of course, other topics such as adaptive and personalized gamification, gamification definitions and theories, serious games and game-based learning, and many other topics are welcome. The website for the workshop, including a full Call for Papers, can be found at https://www.gamification-reloaded.com or https://www.gam-r.de/.
title: Magnetic resonance imaging in assessment of prostate cancer local extension: the value of correct oblique axial plane orientation
Creators: name: Subbotin, Yuri
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Oncology
subject: Genital / Reproductive system male
subject: Pelvis
subject: MR
subject: Observer performance
subject: Technical aspects
subject: Cancer
subject: Image registration

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Correct evaluation of prostate cancer extracapsular extension (ECE) and seminal vesicles invasion (SVI) plays a critical role for radical prostatectomy (RPE) planning. The purpose of this study was to demonstrate the value of correct orientation of...