cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Νευροψυχολογικοί παράγοντες που επηρεάζουν την εκμάθηση μητρικής και ξένης γλώσσας
titleType: AlternativeTitle
Creators: name: Ανδρέου, Γεωργία
Publisher: name: University of Thessaly
Year: 2012
Subjects: subject: ΜΑΘΗΣΗ -- ΨΥΧΟΛΟΓΙΑ
subject: ΝΕΥΡΟΨΥΧΟΛΟΓΙΑ

description: Παρατηρήσεις έκδοσης: λείπει η σελίδα 117 από το φυσικό τεκμήριο.
description: Το φύλο, η επιλογή χεριού και το επίπεδο στο οποίο βρίσκεται ένα άτομο σε σχέση με την εκμάθηση μιας γλώσσας, παραμένουν στο επίκεντρο της νευροψυχολογικής έρευνας για πολλά χρόνια, επειδή είναι παράγοντες οι οποίοι επηρεάζουν την ημισφαιρική εξειδίκευση για τη τη μητρική και μια δεύτερη γλώσσα. Στην παρούσα έρευνα, μελετήθηκε η επίδραση των τριών αυτών παραγόντων στην ασυμμετρία των εγκεφαλικών ημισφαιρίων με τη μέθοδο των οπτικών προκλητών δυναμικών και τη μέθοδο του ταχυστοσκοπίου. 64 άτομα, τα οποία χωρίστηκαν ομοιόμορφα σε ομάδες ανάλογα με το φύλο, την επιλογή χεριού και το επίπεδο στη δεύτερη γλώσσα, εξετάστηκαν με τις παραπάνω μεθόδους. Ζεύγη Ελληνικών και Αγγλικών λέξεων παρουσιάστηκαν σε οθόνη και ζητήθηκε από τους εξεταζόμενους να βρουν αν αυτές ομοιοκαταληκτούσαν ή είχαν κάποια νοηματική σχέση μεταξύ τους. Μετά την εφαρμογή της μεθόδου του ταχυστοσκοπίου, ο χρόνος αντίδρασης και ο αριθμός των λαθών ανά οπτικό πεδίο εκτιμήθηκαν. Μετά την εφαρμογή των οπτικών προκλητών δυναμικών, ο λανθάνων χρόνος και το ύψος των κορυφών Ν1(Ν75), Ρ1(Ρ100) και Ν2(145) μετρήθηκαν στις κυματομορφές του αριστερού και δεξιού Ινιακού λοβού και ο λανθάνων χρόνος και το ύψος των κορυφών Ν2( 145) και Ρ2( 165) μετρήθηκαν στις κυματομορφές του αριστερού και δεξιού Κροταφικού λοβού. Στατιστικά σημαντικές (ρ< .05) διαφορές ανάμεσα στο Αριστερό (ΑΗ) και Δεξιό (ΔΗ) ημισφαίριο όσον αφορά τους παράγοντες που εκτιμήθηκαν, έδειξαν μια μετακίνηση από το δεξιό προς το αριστερό ημισφαίριο στην επεξεργασία της δεύτερης γλώσσας καθώς το επίπεδο σ' αυτή ανέβαινε, στα δεξιόχειρα άτομα. Αυτή η μετακίνηση ήταν ιδιαίτερα εμφανής στα δεξιόχειρα αγόρια, τα οποία επίσης έδειξαν υπεροχή του αριστερού ημισφαιρίου για τις φωνολογικές δεξιότητες και υπεροχή του δεξιού ημισφαιρίου για τις σημασιολογικές δεξιότητες στη μητρική τους γλώσσα. Οι αριστερόχειρες παρουσίασαν ασθενή ημισφαιρική εξειδίκευση τόσο για τη μητρική όσο και για τη δεύτερη γλώσσα και ιδιαίτερα τα αριστερόχειρα κορίτσια ήταν η ομάδα η οποία παρουσίασε την ασθενέστερη πλαγίωση και για τις δύο γλώσσες. Συμπερασματικά, ο ρόλος των εγκεφαλικών ημισφαιρίων στην επεξεργασία της μητρικής και μιας δεύτερης γλώσσας ποικίλει σε κάθε ομάδα ατόμων και διαφοροποιείται ανάλογα με το φύλο, την επιλογή χεριού και το επίπεδο στο οποίο βρίσκονται τα άτομα σε σχέση με την εκμάθηση μιας γλώσσας. Συνεπώς, στο εκπαιδευτικό σύστημα θα πρέπει να χρησιμοποιούνται μέθοδοι διδασκαλίας που να εμπλέκουν και τα δύο εγκεφαλικά ημισφαίρια και να εκμεταλεύονται πλήρως τις δυνατότητές τους και ιδιαίτερα στα πρώτα στάδια εκμάθησης τόσο της μητρικής όσο και μιας δεύτερης γλώσσας.
title: Lung infection and immunosuppression: an imaging diagnosis
Creators: name: Tumenas, Augustinas
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Infection
subject: Education and training
subject: Diagnostic procedure
subject: PET-CT
subject: CT
subject: Conventional radiography
subject: Lung

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To explain the main components of immunity in the setting of immunosuppression and to correlate them to different primary, secondary and iatrogenic conditions. To show the spectrum of immunosuppression related infection. To illustrate the above by...
title: Deconstruction and Reflection in Participatory Research and Design – A Multidisciplinary Perspective
Creators: name: Volkmann, Torben
name: Schaller, Michael
name: Nolte, Amelie
name: Jochems, Nicole
name: Fischer, Florian
Publisher: name: GI
Year: 2023

description: Sociotechnical innovations are often proposed as solutions for societal challenges. To effectively address diverse perspectives, needs, and requirements of target groups, early involvement of the latter in the development of digital systems is deemed useful. Respective participatory approaches hold promise, but they are complex and demanding. Therefore, it is crucial to recognize collective reflection on assumptions and beliefs as an integral part of participatory activities. This reflection helps to address hidden assumptions that might impact participation and the subsequent technology development. This paper discusses two methods in terms of their potential to critically reflect and broaden the possibilities of technology development by breaking down preconceptions and stereotypes.
Integrating the VO framework in the EOSC
Creators: name: Molinaro, M.
name: Allen, M.
name: Bertocco, S.
name: Boisson, C.
name: Bonnarel, F.
name: Castro Neves, M.
name: Demlaitner, M.
name: Genova, F.
name: Morris, D.
name: Schaaff, A.
name: Taffoni, G.
name: Voutsinas, S.
Publisher: name: Zenodo
Year: 2019

description: Presented at ADASS XXIX
title: Workshop on Designing Accessible Extended Reality: An Opportunity for People with Disabilities and Disorders
Creators: name: Engel, Christin
name: Schmalfuß-Schwarz, Jan
name: Gollasch, David
name: Branig, Meinhardt
name: Dirks, Susanne
name: Weber, Gerhard
Publisher: name: GI
Year: 2023
Subjects: subject: neurodivergent
subject: autism
subject: assistive technology
subject: extended reality
subject: virtual and mixed reality

description: Extended Reality (XR) technologies offer a wide range of innovative use cases and interaction concepts. On the one hand, they provide several possibilities to reduce barriers for people with specific physical or mental needs, e.g., through simulations, gamification, or training scenarios. Individuals with anxiety disorders, dementia, or autism spectrum disorder, for example, may also benefit. On the other hand, it is challenging to design accessible XR technologies for heterogeneous user groups. Therefore, the area of accessible XR as well as adaptation based on users' needs and contexts, is of high interest and has barely been researched yet. Participants of the workshop are encouraged to discuss both – the major challenges and opportunities in designing XR-based assistive technology for different target groups and scenarios, as well as the accessibility of XR technologies.
Disorder-enhanced effective masses and deviations from Matthiessen's rule in PdCoO$_2$ thin films
Creators: name: Barbalas, David
name: Legros, Anaëlle
name: Rimal, Gaurab
name: Oh, Seongshik
name: Armitage, N. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The observation of hydrodynamic transport in the metallic delafossite PdCoO$_2$ has increased interest in this family of highly conductive oxides, but experimental studies so far have mostly been confined to bulk crystals. In this work, the development of high-quality thin films of PdCoO$_2$ has enabled a thorough study of the conductivity as a function of film thickness using both dc transport and time-domain THz spectroscopy. With increasing film thickness from 12 nm to 102 nm, the residual resistivity decreases and we observe a large deviation from Matthiessen's rule (DMR) in the temperature dependence of the resistivity. We find that the complex THz conductivity is well fit by a single Drude term. We fit the data to extract the spectral weight and scattering rate simultaneously. The temperature dependence of the Drude scattering rate is found to be nearly independent of the residual resistivity and cannot be the primary mechanism for the observed DMR. Rather, we observe large changes in the spectral weight as a function of disorder, changing by a factor of 1.5 from the most disordered to least disordered films. We believe this corresponds to a mass enhancement of $\geq 2$ times the value of the bulk effective mass which increases with residual disorder. This suggests that the mechanism behind the DMR observed in dc resistivity is primarily driven by changes in the electron mass. We discuss the possible origins of this behavior including the possibility of disorder-enhanced electron-phonon scattering, which can be systematically tuned by film thickness.
description: 10 pages, 8 figures
Joint ranging and synchronization for an anchorless network of mobile nodes
Creators: name: Rajan, Raj Thilak
name: van der Veen, Alle-Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Synchronization and localization are critical challenges for the coherent functioning of a wireless network, which are conventionally solved independently. Recently, various estimators have been proposed for pairwise synchronization between immobile nodes, based on time stamp exchanges via two-way communication. In this paper, we consider a \textit{network of mobile nodes} for which a novel joint time-range model is presented, treating both unsynchronized clocks and the pairwise distances as a polynomial function of \textit{true} time. For a set of nodes, a pairwise least squares solution is proposed for estimating the pairwise range parameters between the nodes, in addition to estimating the clock offsets and clock skews. Extending these pairwise solutions to network-wide ranging and clock synchronization, we present a central data fusion based global least squares algorithm. A unique solution is non-existent without a constraint on the cost function (\eg clock reference node). Ergo, a constrained framework is proposed and a new Constrained \Cramer\ Rao Bound (CCRB) is derived for the joint time-range model. In addition, various constraints are proposed and their effects on the proposed algorithms are studied. Simulations are conducted and the proposed algorithm is shown to approach the theoretical limits.
description: In submission
title: Imaging features of hepatic malignancies during and after interventional radiological procedures: a practical guide for radiologists
Creators: name: Chiarenza, Alessandra
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Neoplasia
subject: Multidisciplinary cancer care
subject: Cancer
subject: Treatment effects
subject: Chemoembolisation
subject: Ablation procedures
subject: Ultrasound
subject: MR
subject: CT
subject: Liver
subject: Interventional vascular
subject: Interventional non-vascular

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The aim of this educational exhibit is to describeimaging features of malignant hepatic lesions during and after interventional radiology...
Exactly isochoric deformations of soft solids
Creators: name: Biggins, J. S.
name: Wei, Z.
name: Mahadevan, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Many materials of contemporary interest, such as gels, biological tissues and elastomers, are easily deformed but essentially incompressible. Traditional linear theory of elasticity implements incompressibility only to first order and thus permits some volume changes, which become problematically large even at very small strains. Using a mixed coordinate transformation originally due to Gauss, we enforce the constraint of isochoric deformations exactly to develop a linear theory with perfect volume conservation that remains valid until strains become geometrically large. We demonstrate the utility of this approach by calculating the response of an infinite soft isochoric solid to a point force that leads to a nonlinear generalization of the Kelvin solution. Our approach naturally generalizes to a range of problems involving deformations of soft solids and interfaces in 2 dimensional and axisymmetric geometries, which we exemplify by determining the solution to a distributed load that mimics muscular contraction within the bulk of a soft solid.
title: Η συμβολή του ελαιώδους εναιωρήματος Ca(OH)2 στην επούλωση οστικών κοιλοτήτων στις γνάθους
titleType: AlternativeTitle
Creators: name: Αλμόμανι, Χουσεΐν
Publisher: name: University of Thessaly
Year: 2004
Subjects: subject: ΓΝΑΘΟΙ -- ΧΕΙΡΟΥΡΓΙΚΗ
subject: ΥΔΡΟΞΕΙΔΙΟ ΤΟΥ ΑΣΒΕΣΤΙΟΥ -- ΘΕΡΑΠΕΥΤΙΚΗ ΧΡΗΣΗ

description: Παρατηρήσεις έκδοσης: λείπει η σελίδα 158 από το φυσικό τεκμήριο.
description: Στην παρούσα πειραματική μελέτη εξετάστηκε η συμβολή του ελαιώδους εναιωρήματος Ca(OH)2 το οποίο φέρει την εμπορική επωνυμία osteoinductal®, στην επούλωση οστικών ελλείψεων της γναθοπροσωπικής χώρας. Χρησιμοποιήθηκαν 35 κόνικλοι, βάρους 3.5 - 5.5 χιλιογράμμων, στων οποίων τις κάτω γνάθους διανοίχθηκαν, υπό γενική αναισθησία, δύο κοιλότητες διαμέτρου 3mm - 4mm. Στη μία εκ των δύο κοιλοτήτων τοποθετήθηκε το προαναφερθέν υλικό ενώ η ετέρα κοιλότης εχρησίμευσε ως μάρτυς. Τα πειραματόζωα θυσιάστηκαν κατά ομάδες μία εβδομάδα, δύο εβδομάδες, τρεις εβδομάδες και ένα μήνα μετά την τοποθέτηση του υλικού. Ακολούθησε ιστολογικός έλεγχος όλων των κοιλοτήτων και μορφομετρική εκτίμηση με σύστημα ανάλυσης εικόνας (image analysis system) σε άπαντα τα πειραματόζωα. Διαπιστώθηκε ότι, κατά την διάρκεια των πρώτων τριών εβδομάδων, οι κοιλότητες στις οποίες είχε τοποθετηθεί osteoinductal® παρουσίαζαν αυξημένη οστεοβλαστική δραστηριότητα σε σχέση με τους μάρτυρες. Αντιθέτως στα παρασκευάσματα που ελήφθησαν ένα μήνα μετά την τοποθέτηση του osteoinductal® παρετηρήθη μειωμένη οστεοβλαστική δραστηριότητα σε σύγκριση με τις κοιλότητες-μάρτυρες. Η εν λόγω μείωση δικαιολογείται από το γεγονός ότι στις κοιλότητες όπου είχε τοποθετηθεί osteoinductal® είχε πλέον ολοκληρωθεί η επούλωση, ενώ στις κοιλότητες-μάρτυρες η επούλωση συνεχιζόταν. Τα αποτελέσματα της ημετέρας πειραματικής μελέτης έδειξαν ότι το υλικό osteoinductal® επιταχύνει την επούλωση των οστικών ελλείψεων και ως εκ τούτου αποτελεί χρήσιμο υλικό για την γναθοχειρουργική και την οδοντιατρική.
AFFIRM: Affinity Fusion-based Framework for Iteratively Random Motion correction of multi-slice fetal brain MRI
Creators: name: Shi, Wen
name: Xu, Haoan
name: Sun, Cong
name: Sun, Jiwei
name: Li, Yamin
name: Xu, Xinyi
name: Zheng, Tianshu
name: Zhang, Yi
name: Wang, Guangbin
name: Wu, Dan
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: Multi-slice magnetic resonance images of the fetal brain are usually contaminated by severe and arbitrary fetal and maternal motion. Hence, stable and robust motion correction is necessary to reconstruct high-resolution 3D fetal brain volume for clinical diagnosis and quantitative analysis. However, the conventional registration-based correction has a limited capture range and is insufficient for detecting relatively large motions. Here, we present a novel Affinity Fusion-based Framework for Iteratively Random Motion (AFFIRM) correction of the multi-slice fetal brain MRI. It learns the sequential motion from multiple stacks of slices and integrates the features between 2D slices and reconstructed 3D volume using affinity fusion, which resembles the iterations between slice-to-volume registration and volumetric reconstruction in the regular pipeline. The method accurately estimates the motion regardless of brain orientations and outperforms other state-of-the-art learning-based methods on the simulated motion-corrupted data, with a 48.4% reduction of mean absolute error for rotation and 61.3% for displacement. We then incorporated AFFIRM into the multi-resolution slice-to-volume registration and tested it on the real-world fetal MRI scans at different gestation stages. The results indicated that adding AFFIRM to the conventional pipeline improved the success rate of fetal brain super-resolution reconstruction from 77.2% to 91.9%.
title: User-Centered Evaluation of Machine Learning vs. Human Decisions – Identifying Emotional Highlights in Reality TV Formats
Creators: name: Rossner, Alexander
name: Pagel, Sven
name: Dörner, Ralf
Publisher: name: GI
Year: 2023

description: This research paper examines a user-centered evaluation approach of artificial intelligence (AI) systems in the context of identifying emotional highlight scenes in reality TV formats. The study investigates the accuracy and reliability of AI compared to humans in identifying these highlights and explores viewers’ ability to distinct human versus AI-assisted decisions. Internal user tests with media company employees (enterprise users) demonstrate that the AI algorithm developed in the AI4MediaData research project achieves a high level of accuracy, closely aligning with human editors’ assessments. External user tests with viewers (consumers) reveal that participants are unable to distinguish whether highlight clips were identified by humans or by an AI. These findings emphasize the importance of user-centered evaluations that go beyond algorithm-centered evaluations to ensure useful AI-based systems. The research contributes to the advancement of Human-Centered Artificial Intelligence (HCAI) by considering both cognitive and emotional elements in AI-assisted decision-making.
Unusual flat and extended morphology of intercalated Cu under MoS2
Creators: name: Jing, Dapeng
name: Han, Yong
name: Evans, James W.
name: Kolmer, Marek
name: Fei, Zhe
name: Tringides, Michael C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A general method was developed to intercalate metals under layered materials through a controlled density of sputtered defects. The method has been already applied to study a range of metals intercalated under graphite and different types of morphologies were realized. In the current work, we extend the method to the study of intercalation under MoS2 noting that work on this system is rather limited. We use Cu as the prototype metal for comparison with Cu intercalation under graphite. Although the growth conditions needed for intercalation under graphite and MoS2 are similar, the type of intercalated phases is very different. Each Cu island which nucleates on top of MoS2 during Cu deposition provides material that is transferred below MoS2, through sputtered defects under the island base; this transfer results in a uniform intercalated Cu "carpet" morphology that extends over the mesoscale. On the contrary, Cu intercalation under graphite results in well separated, compact islands formed by monomer detachment from small Cu islands on top and transfer below through defects far from the islands. The structural techniques (scanning electron microscopy and atomic force microscopy) and spectroscopic techniques (x-ray photoelectron spectroscopy and energy dispersive spectroscopy) are used for the characterization of the intercalated Cu layer.
title: Time and Timing in Video Games: How Video Game and Time Perception Research can benefit each other
Creators: name: Bogon, Johanna
name: Halbhuber, David
Publisher: name: GI
Year: 2023

description: Time is omnipresent in virtually all video games, shaping their design and mechanics. Players harness these temporal components to gain an advantage over their opponents and the game. The ability to use temporal properties stems from time being an essential aspect of human cognition and perception. In this position paper, we explore the potential synergies between the study of temporal cognition and perception and the study of video games. In particular, we highlight how fundamental research in these fields can benefit from analyzing temporal cognition in video games. By investigating the interaction between players and temporal elements in game environments, researchers can gain valuable insights into the mechanisms of human temporal cognition. Conversely, we also shed light on the reciprocal relationship between these findings and video game design. Incorporating knowledge from temporal cognition research, may allow game designers to enhance the overall game experience and improve player performance. This symbiotic exchange between research and video game development has the potential to foster innovation and create more engaging and immersive gaming experiences. Overall, our position paper emphasizes the interconnection between video games and temporal cognition research. By leveraging the ubiquitous nature of time in games and its fundamental role in human cognition, both fields can benefit from each other’s insights and advances.
Superconducting density of states and bandstructure at the surface of the candidate topological superconductor Au2Pb
Creators: name: Martín-Vega, Francisco
name: Herrera, Edwin
name: Wu, Beilun
name: Barrena, Víctor
name: Mompeán, Federico
name: García-Hernández, Mar
name: Canfield, Paul C.
name: Black-Schaffer, Annica M.
name: Baldoví, José J.
name: Guillamón, Isabel
name: Suderow, Hermann
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic bandstructure of Au$_2$Pb has a Dirac cone which gaps when undergoing a structural transition into a low temperature superconducting phase. This suggests that the superconducting phase ($T_c=1.1$ K) might hold topological properties at the surface. Here we make Scanning Tunneling Microscopy experiments on the surface of superconducting Au$_2$Pb. We measure the superconducting gap and find a sizeable superconducting density of states at the Fermi level. We discuss possible origins for this finding in terms of superconductivity induced into surface states.
title: Chest trauma: what to look for?
Creators: name: Torres Rodrigues, Bernardete Maria
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Trauma
subject: Education
subject: CT
subject: Conventional radiography
subject: Thorax
subject: Emergency

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - To review the spectrum of injuries after chest trauma. - To discuss and illustrate the imaging findings in thoracic trauma including abnormalities of the chest wall, pleural space, diaphragm, lungs, airways, esophagus, heart and great...
A setup for grazing incidence fast atom diffraction
Creators: name: Pan, Peng
name: Rad, Jaafar Najafi
name: Roncin, Philippe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We describe a UHV setup for grazing incidence fast atom diffraction (GIFAD) experiments. The overall geometry is simply a source of keV atoms facing an imaging detector. Therefore, It is very similar to the geometry of RHEED experiments, reflection high energy electron diffraction used to monitor growth at surfaces. Several custom instrumental developments are described making GIFAD operation efficient and straightforward. The difficulties associated with accurately measuring the small scattering angle and the related calibration are carefully analyzed.
description: 14 pages, 15figures
Risks and Returns of Uniswap V3 Liquidity Providers
Creators: name: Heimbach, Lioba
name: Schertenleib, Eric
name: Wattenhofer, Roger
Publisher: name: arXiv
Year: 2022
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: Trade execution on Decentralized Exchanges (DEXes) is automatic and does not require individual buy and sell orders to be matched. Instead, liquidity aggregated in pools from individual liquidity providers enables trading between cryptocurrencies. The largest DEX measured by trading volume, Uniswap V3, promises a DEX design optimized for capital efficiency. However, Uniswap V3 requires far more decisions from liquidity providers than previous DEX designs. In this work, we develop a theoretical model to illustrate the choices faced by Uniswap V3 liquidity providers and their implications. Our model suggests that providing liquidity on Uniswap V3 is highly complex and requires many considerations from a user. Our supporting data analysis of the risks and returns of real Uniswap V3 liquidity providers underlines that liquidity providing in Uniswap V3 is incredibly complicated, and performances can vary wildly. While there are simple and profitable strategies for liquidity providers in liquidity pools characterized by negligible price volatilities, these strategies only yield modest returns. Instead, significant returns can only be obtained by accepting increased financial risks and at the cost of active management. Thus, providing liquidity has become a game reserved for sophisticated players with the introduction of Uniswap V3, where retail traders do not stand a chance.
title: T2 hypointense osseous tumours: why are they so dark?
Creators: name: Tereso, Andreia
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Musculoskeletal bone
subject: Oncology
subject: Bones
subject: MR
subject: Conventional radiography
subject: Imaging sequences
subject: Education and training
subject: Tissue characterisation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Benign and malignant osseous tumors are regularly discovered at conventional radiography. That’s why radiographs should be done in the early work-up evaluation of a bone tumor. If an aggressive lesion is found at plain radiography, an MRI should...
title: Immersive Exploration of Machine Learning Data Combining Visual Analytics with Explainable AI
Creators: name: Potthast, Jonas
name: Grimm, Valentin
name: Rubart, Jessica
Publisher: name: GI
Year: 2023

description: With the need to explain complex machine learning (ML) models it is necessary to explore human friendly visualizations and interaction techniques of data. In our position paper, we discuss a unique way for interacting with machine learning data to help decision makers in developing a mental model. This can increase trust towards the ML models and make the complexity digestible. In our approach, we combine visual analytics with explainable AI. In particular, we present a Mixed Reality based scatterplot application making use of SHAP values, where feature axes are automatically adjusted when diving deeper into parts of the data.
Linear complexity problems of level sequences of Euler quotients and their related binary sequences
Creators: name: Niu, Zhihua
name: Chen, Zhixiong
name: Du, Xiaoni
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: Cryptography and Security (cs.CR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 94A55, 94A60, 65C10

description: The Euler quotient modulo an odd-prime power $p^r~(r>1)$ can be uniquely decomposed as a $p$-adic number of the form $$ \frac{u^{(p-1)p^{r-1}} -1}{p^r}\equiv a_0(u)+a_1(u)p+\ldots+a_{r-1}(u)p^{r-1} \pmod {p^r},~ \gcd(u,p)=1, $$ where $0\le a_j(u)1$. We firstly study certain arithmetic properties of the level sequences $(a_j(u))_{u\ge 0}$ over $\mathbb{F}_p$ via introducing a new quotient. Then we determine the exact values of linear complexity of $(a_j(u))_{u\ge 0}$ and values of $k$-error linear complexity for binary sequences defined by $(a_j(u))_{u\ge 0}$.
description: 16 pages
Dirac series of $E_{7(-5)}$
Creators: name: Ding, Yi-Hao
name: Dong, Chao-Ping
name: Li, Ping-Yuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Using the sharpened Helgason-Johnson bound, this paper classifies all the irreducible unitary representations with non-zero Dirac cohomology of $E_{7(-5)}$. As an application, we find that the cancellation between the even part and the odd part of the Dirac cohomology continues to happen for certain unitary representations of $E_{7(-5)}$. Assuming the infinitesimal character being integral, we further improve the Helgason-Johnson bound for $E_{7(-5)}$. This should help people to understand (part of) the unitary dual of this group.
description: 25 pages. arXiv admin note: text overlap with arXiv:2204.07902
title: The Activity - Cost evolution in a Radiology Department during the economic recession period.
Creators: name: Puente Villaquirán, Susana
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Economics
subject: Statistics
subject: FOS: Mathematics
subject: RIS
subject: Management

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The international finantial crisis in 2007-2008 had an important repercussion in Spain. In years 2011-2012 the recession was more severe, going to the highest level, triggering important Public Spending cuts , limiting the capacity of Public...
Aree e quartieri artigianali in Magna Grecia: il caso di Poseidonia
Creators: name: Rizzo, Maria Luigia
Publisher: name: Universita degli studi di Salerno
Year: 2017
Subjects: subject: L-ANT/07 ARCHEOLOGIA CLASSICA
subject: Magna Grecia
subject: Quartieri artigianali
subject: Archeologia della produzione

description: 2015 - 2016
description: In passato le aree artigianali delle città della Magna Grecia sono state indagate in maniera parziale e studiate come fonte d’informazione complementare; negli ultimi anni, invece, la ricerca ha posto grande attenzione all’Archeologia della Produzione che contribuisce ad ampliare le conoscenze delle comunità antiche, di cui fornisce numerose informazioni sul patrimonio tecnologico e culturale, i rapporti commerciali e di scambio e sull’organizzazione sociale. Purtroppo però, ad oggi, non esiste un’opera di sintesi che raccolga in maniera sistematica tutti i dati riguardanti i contesti archeologici e faccia il punto sullo stato delle ricerche. Pertanto, la prima parte del mio lavoro è dedicata allo studio delle aree produttive delle maggiori città greche dell’Italia meridionale, i cui dati confluiscono in una schedatura ragionata suddivisa per siti, contribuendo alla comprensione dell’organizzazione del sistema produttivo di ciascuna di esse. La seconda parte è rivolta all’interpretazione dei contesti di Poseidonia che hanno restituito tracce di attività artigianale, sia attraverso il riesame dei dati edite sia di quelli inediti recuperati negli archivi della Soprintendenza e del Museo Archeologico Nazionale di Paestum; il lavoro è stato poi svolto nei depositi del Museo Archeologico Nazionale di Paestum, dove è stata effettuata l’analisi filologica di tutti i materiali allo scopo di ricostruire la sequenza stratigrafica. [a cura dell'Autore]
description: In the past the craft areas of Magna Grecia’s cities have been investigated in a partial way and studied as source of complementary information; in the last few years, the research paid great attention to the Production’s Archaeology, that contributes to expanding the knowledge of the ancient communities, of which it provides informations on the technological and cultural heritage, the trade and exchange relations, and on social organization. Unfortunatley, until today, does not exist a work of synthesis that collects in a systematic way all data concerning the archaeological contexts and take stock of the status of the research. Therefore, the first part of my work is dedicated to the study of production areas of the Greek cities in southern Italy. The data flow into a reasoned record divided by sites, contributing to understanding the organization of their productive system. The second part is dedicated to the interpretation of the Poseidonia’s contexts that have returned traces of craftsmanship, both through the review of published data and unpublished data, found in the archives of the National Archaeological Museum of Paestum; the work was then conducted in the Museum stores, where the philological analysis of all the materials was carried out in order to reconstruct the stratigraphic sequence. [edited by Author]
title: Imaging Indicators for Frailty Syndrome: What the Radiologist Needs to Know
Creators: name: Siddall, Kristina
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Screening
subject: MR
subject: CT
subject: Musculoskeletal soft tissue
subject: Musculoskeletal bone
subject: Geriatrics
subject: Absorptiometry / Bone densitometry

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Define frailty syndrome and list negative health outcomes associated with frailty Describe the radiologic measurement techniques used to determine sarcopenia and other indicators of frailty syndrome Summarize the use of imaging in the evaluation of...
Time-Dependent Wormhole Solutions of $f(R)$ Theory of Gravity and Energy Conditions
Creators: name: Saiedi, H.
name: Esfahani, B. Nasr
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we construct time-dependent wormhole solutions in the context of $f(R)$ theory of gravity. The background matter is considered to be traceless. By considering specific shape function and power-law expansion exact solutions for $f(R)$ are found. The null and the weak energy conditions (NEC and WEC) are checked for wormhole solutions. It is shown that the matter threading the wormhole spacetimes with either accelerated expansion or decelerated expansion satisfies the NEC and WEC.
description: arXiv admin note: text overlap with arXiv:0909.5539, arXiv:1107.2703, arXiv:1007.3040, arXiv:gr-qc/0607124 by other authors
title: Make Web Accessibility Sustainable by Automated Tools Combined with Live Coaching - Tool-Based Coaching for Web Accessibility
Creators: name: Burkard, Andreas
name: Buchem, Jessica
name: Kersken, Verena
name: Zimmermann, Gottfried
Publisher: name: GI
Year: 2023

description: Web accessibility is beneficial for many users, including those with permanent, temporary, and situational disabilities. Web accessibility is also mandated for public authorities by the European Web Accessibility Directive (since Sep 2019), and for some of industry’s products and services by the European Accessibility Act (starting Jun 2025). As of today, web authors and admins often lack expertise in designing accessible websites. Automatic tools (so-called monitoring systems) can detect only some of the existing barriers in websites but cannot repair any of them. In this paper, we propose a hybrid approach (called “live coaching”) for teaching web authors and admins on web accessibility. Web accessibility experts discuss automatic reports of monitoring systems bi-weekly with the web authors and admins and propose solutions to the barriers with the highest priority. In addition, other barriers that are related to those in the report but can only be detected manually, are discussed. Early results are encouraging, fueling the hope that by this approach, the expertise of the trainees grows, and the number of barriers shrinks; not only for those that were detected automatically, but also for those that require manual examination.
Identification of RNA helicases with unwinding activity on angiogenin-processed tRNAs.
Creators: name: Drino, Aleksej
name: König, Lisa
name: Capitanchik, Charlotte
name: Sanadgol, Nasim
name: Janisiw, Eva
name: Rappol, Tom
name: Vilardo, Elisa
name: Schaefer, Matthias R
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: Genetics & Genomics
Gene Expression
Tumour Biology
Computational & Systems Biology

description: Stress-induced tRNA fragmentation upon environmental insult is a conserved cellular process catalysed by endonucleolytic activities targeting mature tRNAs. The resulting tRNA-derived small RNAs (tsRNAs) have been implicated in various biological processes that impact cell-to-cell signalling, cell survival as well as gene expression regulation during embryonic development. However, how endonuclease-targeted tRNAs give rise to individual and potentially biologically active tsRNAs remains poorly understood. Here, we report on the in vivo identification of proteins associated with stress-induced tsRNAs-containing protein complexes, which, together with a 'tracer tRNA' assay, were used to uncover enzymatic activities that can bind and process specific endonuclease-targeted tRNAs in vitro. Among those, we identified conserved ATP-dependent RNA helicases which can robustly separate tRNAs with endonuclease-mediated 'nicks' in their anticodon loops. These findings shed light on the existence of cellular pathways dedicated to producing individual tsRNAs after stress-induced tRNA hydrolysis, which adds to our understanding as to how tRNA fragmentation and the resulting tsRNAs might exert physiological impact.
title: Spinal ultrasound imaging in newborns: indications, normal and pathologic findings
Creators: name: Ventosa, Ana Rita
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Paediatric
subject: Neuroradiology spine
subject: Anatomy
subject: Ultrasound
subject: Education
subject: Normal variants
subject: Education and training
subject: Congenital

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the indications for a spinal ultrasound study in newborns. To review and illustrate the normal anatomy, normal variants and pathologic conditions of the spine in newborns, focusing on the ultrasound imaging...
Tunable Topological Dirac Surface States and Van Hove Singularities in Kagome Metal GdV${_6}$Sn${_6}$
Creators: name: Hu, Yong
name: Wu, Xianxin
name: Yang, Yongqi
name: Gao, Shunye
name: Plumb, Nicholas C.
name: Schnyder, Andreas P.
name: Xie, Weiwei
name: Ma, Junzhang
name: Shi, Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Transition-metal-based kagome materials at van Hove filling are a rich frontier for the investigation of novel topological electronic states and correlated phenomena. To date, in the idealized two-dimensional kagome lattice, topologically nontrivial Dirac surface states (TDSSs) have not been unambiguously observed, and the manipulation of TDSSs and van Hove singularities (VHSs) remains largely unexplored. Here, we reveal TDSSs originating from a Z${_2}$ bulk topology and identify multiple VHSs near the Fermi level ($\textit{E}$${_F}$) in magnetic kagome material GdV${_6}$Sn${_6}$. Using in-situ surface potassium deposition, we successfully realize manipulation of the TDSSs and VHSs. The Dirac point of the TDSSs can be tuned from above to below ($\textit{E}$${_F}$), which reverses the chirality of the spin texture at the Fermi surface. These results establish GdV${_6}$Sn${_6}$ as a fascinating platform for studying the nontrivial topology, magnetism and correlation effects native to kagome lattices. They also suggest potential application of spintronic devices based on kagome materials.
title: Camera-based position analysis system for cyclists ordering in bicycle swarms
Creators: name: Yadav, Vemburaj Chockalingam
name: Pagani, Alain
name: Stricker, Didier
Publisher: name: GI
Year: 2023

description: activity. To offer enhanced digital services for swarm cycling, it is essential to obtain real-time information about the position of each cyclist within the swarm. While GNSS (Global Navigation Satellite Systems) signals such as GPS, Galileo or GLONASS may not provide precise positioning in such scenarios, this paper proposes a novel approach to address this challenge. By equipping each bicycle with a backward-facing camera and leveraging computer vision and deep learning methodologies, we can achieve the absolute ordering of bicyclists in real-time. This position paper outlines a comprehensive framework that utilizes object detection, monocular depth estimation, and object tracking models to process camera information and obtain accurate positioning within the swarm. The proposed solution also enables the detection of overtakes between cyclists, adding an additional layer of information to enhance the overall swarm cycling experience.
title: Τάσεις, προοπτικές και τυπολογία του τουρισμού στην Ελλάδα με έμφαση στον αθλητικό τουρισμό
titleType: AlternativeTitle
Creators: name: Υφαντίδου, Γεωργία
Publisher: name: University of Thessaly
Year: 2009
Subjects: subject: ΑΘΛΗΤΙΣΜΟΣ ΚΑΙ ΤΟΥΡΙΣΜΟΣ
subject: ΤΟΥΡΙΣΜΟΣ -- ΚΟΙΝΩΝΙΚΕΣ ΑΠΟΨΕΙΣ

description: Παρατηρήσεις έκδοσης: α) λείπουν οι σελίδες 152-153 από το φυσικό τεκμήριο. β) παρόραμα στη σελιδαρίθμηση.
description: Ο Cohen (1972), ήταν ένας από τους πρώτους ερευνητές ο οποίος πρότεινε ότι οι τουρίστες θα μπορούσαν να ταξινομηθούν με βάση παρόμοιες παρατηρήσιμες συμπεριφορές. Οι Gibson και Yiannakis (2002), παρουσίασαν μια περιεκτική ταξινόμηση των τουριστών ελεύθερου χρόνου και σχέδιασαν την κλίμακα Tourist Role Preference Scale (TRPS) τουριστικής τυπολογίας 15 ρόλων. Ο σκοπός της παρούσας έρευνας ήταν να διερευνήσει την τυπολογία των τουριστών, που επισκέπτονται την Ελλάδα, καθώς και τον αθλητικό τουρισμό στη χώρα. Το δείγμα αποτελούνταν από 1675 τουρίστες από 50 χώρες που επισκέφτηκαν την Ελλάδα το καλοκαίρι του 2007. Το ερωτηματολόγιο που χρησιμοποιήθηκε ήταν βασισμένο στο TRPS και στην τελική μορφή του έγιναν κάποιες προσθήκες και τροποποιήσεις. Έπειτα, μεταφράστηκε στην ελληνική, γερμανική και ρωσική γλώσσα και αποτελούνταν από 89 ερωτήσεις. Τα ερωτηματολόγια διανεμήθηκαν σε τουρίστες στο χώρο των αναχωρήσεων και μετά τον έλεγχο (check-in), στους αερολιμένες Ελ.Βενιζέλος στην Αθήνα και Μακεδονία στη Θεσσαλονίκη. Για να εξακριβωθεί η ισχύς της κλίμακας και να καθοριστούν οι τουριστικοί ρόλοι χρησιμοποιήθηκε η ανάλυση κυρίων συνιστωσών, η πολυδιάστατη κλιμακοποίηση, το χ2 τεστ καλής προσαρμογής (SPSS) και η παραγοντική ανάλυση και η ανάλυση ταξινόμησης (SPAD). Τα αποτελέσματα της έρευνας έδειξαν ότι το TRPS φαίνεται να είναι εφαρμόσιμο στη Ελλάδα. Συμπερασματικά, ο Εραστής του Ήλιου, ο Ανθρωπολόγος, ο Αρχαιολόγος, ο Ανεξάρτητος Μαζικός Τουρίστας και ο Φυγάς από την Πραγματικότητα συγκεντρώνουν τα μεγαλύτερα ποσοστά, πράγμα που σημαίνει απώλεια τουριστών στις υπόλοιπες μορφές. Πιθανά ένας λόγος είναι το μη ικανοποιητικό μάρκετινγκ του τουριστικού προϊόντος και η έλλειψη οργάνωσης και προώθησης νέων μορφών τουρισμού σε αυτούς που απασχολούνται ή θα ήθελαν να απασχοληθούν με τον τουρισμό στην Ελλάδα. Όσον αφορά στον Αθλητικό Τουρίστα (AT) αποκαλύφθηκαν τρεις κατηγορίες: ο Ενεργός, ο Extreme και ο των Υπαιθρίων Δραστηριοτήτων. Το συνολικό ποσοστό 15% των AT κρίνεται ως μη ικανοποιητικό, διότι άλλες χώρες προσελκύουν έως και 40% αυτής της κατηγορίας.
Chemistry in One Dimension
Creators: name: Loos, Pierre-François
name: Ball, Caleb J.
name: Gill, Peter M. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We report benchmark results for one-dimensional (1D) atomic and molecular systems interacting via the Coulomb operator $|x|^{-1}$. Using various wavefunction-type approaches, such as Hartree-Fock theory, second- and third-order Møller-Plesset perturbation theory and explicitly correlated calculations, we study the ground state of atoms with up to ten electrons as well as small diatomic and triatomic molecules containing up to two electrons. A detailed analysis of the 1D helium-like ions is given and the expression of the high-density correlation energy is reported. We report the total energies, ionization energies, electron affinities and other interesting properties of the many-electron 1D atoms and, based on these results, we construct the 1D analog of Mendeleev's periodic table. We find that the 1D periodic table contains only two groups: the alkali metals and the noble gases. We also calculate the dissociation curves of various 1D diatomics and study the chemical bond in H$_2^+$, HeH$^{2+}$, He$_2^{3+}$, H$_2$, HeH$^+$ and He$_2^{2+}$. We find that, unlike their 3D counterparts, 1D molecules are primarily bound by one-electron bonds. Finally, we study the chemistry of H$_3^+$ and we discuss the stability of the 1D polymer resulting from an infinite chain of hydrogen atoms.
description: 27 pages, 7 figures
title: Interval timing in virtual reality: Merits, goals, and premises
Creators: name: Riemer, Martin
Publisher: name: GI
Year: 2023

description: can be altered by immersive virtual reality (VR). A thorough understanding of this phenomenon opens interesting prospects, both for the design of user-friendly VR-based interfaces to support humancomputer interaction, and for the scientific investigation of human time perception under more realistic and yet controllable conditions. Here I will delineate some of the future challenges and research questions with respect to the effects of VR on interval timing in the range of several seconds. One of these questions is whether VR induces changes in the perception of time itself or whether it “just” alters our expectations regarding the duration of physical events.
Performance Analysis of VOIP Traffic Over Integrating Wireless LAN and WAN Using Different Codecs
Creators: name: Alsahlany, Ali M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: A simulation model is presented to analyze and evaluate the performance of VoIP based integrated wireless LAN/WAN with taking into account various voice encoding schemes. The network model was simulated using OPNET Modeler software. Different parameters that indicate the QoS like MOS, jitter, end to end delay, traffic send and traffic received are calculated and analyzed in Wireless LAN/WAN scenarios. Depending on this evaluation, Selection codecs G.729A consider the best choice for VoIP.
title: Endovascular treatment of non-maturated arteriovenous fistulas
Creators: name: Harsany, Jan
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Fistula
subject: Embolisation
subject: Angioplasty
subject: Ultrasound-Colour Doppler
subject: Catheter arteriography
subject: Vascular
subject: Interventional vascular

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To understand process of dialysis AV fistula maturation, role of ultrasound in identifying patients with non-maturated AV fistula and present importance of endovascular therapy in promotion of AV fistula maturation process and salvage of AV...