cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Iron phthalocyanine on Au(111) is a "non-Landau" Fermi liquid
Creators: name: Žitko, R.
name: Blesio, G. G.
name: Manuel, L. O.
name: Aligia, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The paradigm of Landau's Fermi liquid theory has been challenged with the finding of a strongly interacting Fermi liquid that cannot be adiabatically connected to a non-interacting system. A spin-1 two-channel Kondo impurity with anisotropy D has a quantum phase transition between two topologically different Fermi liquids with a peak (dip) in the Fermi level for D < Dc (D > Dc). Extending this theory to general multi-orbital problems with finite magnetic field, we reinterpret in a unified and consistent fashion several experimental studies of iron phthalocyanine molecules on Au(111) that were previously described in disconnected and conflicting ways. The differential conductance shows a zero-bias dip that widens when the molecule is lifted from the surface (reducing the Kondo couplings) and is transformed continuously into a peak under an applied magnetic field. We reproduce all features and propose an experiment to induce the topological transition.
description: 11 pages, 7 figures + supplementary materials
Deliverable 3.8 Third Round Call Documents
Creators: name: Reid, Alasdair
name: Neve, Christine
Publisher: name: Zenodo
Year: 2020
Subjects: Privacy and Trust Enhancing Technologies
Human Centric Internet

description: The report compiles the third round call documents as published on 28 February 2020 via the NGI_TRUST wiki (https://wiki.geant.org/display/NGITrust/3rd+Open+Call+NGI_TRUST) and the NGI4ALL web pages (https://www.ngi.eu/opencalls/ngi_trust-open-call/)
Fog and Dew Collection Projects in Croatia
Creators: name: Mileta, M.
name: Beysens, D.
name: Nikolayev, Vadim
name: Milimouk, I.
name: Clus, O.
name: Muselli, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The present paper discusses the fog and dew water collection in Croatia. Zavizan, the highest meteorological station in Croatia(1594m) is chosen for collecting of fog water with a standard fog collector (SFC). The highest daily collection rate was 27.8 L / m2. The highest daily collection rate in days without rain was 19.1 l/m2. Dew is also a noticeable source of water, especially during the drier summer season. Dew condensers in Croatia have been installed on the Adriatic coast (Zadar) and islands Vis and Bisevo. We report and discuss the data collected since 2003. In the small Bisevo island, a special roof has been designed to improve the formation and collection of dew on a house. Data from April 2005 will be presented and discussed.
description: accessible sur http://balwois.mpl.ird.fr/balwois/administration/full_paper/ffp-587.pdf
Superbosonization formula and its application to random matrix theory
Creators: name: Bunder, J. E.
name: Efetov, K. B.
name: Kravtsov, V. E.
name: Yevtushenko, O. M.
name: Zirnbauer, M. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Starting from Gaussian random matrix models we derive a new supermatrix field theory model. In contrast to the conventional non-linear sigma models, the new model is applicable for any range of correlations of the elements of the random matrices. We clarify the domain of integration for the supermatrices, and give a demonstration of how the model works by calculating the density of states for an ensemble of almost diagonal matrices. It is also shown how one can reduce the supermatrix model to the conventional sigma model.
description: 18 pages
Photoactivation at a clinical LINAC: The 197Au(gamma,n)196Au reaction slightly above threshold
Creators: name: Mohr, P.
name: Brieger, S.
name: Witucki, G.
name: Maetz, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The properties of a clinical LINAC are investigated for a study of photoactivation cross sections slightly above the neutron threshold. As an example, the photoactivation of a tiny amount of gold by the 197Au(gamma,n)196Au reaction has been measured. The derived photon intensity is at least comparable to conventional and widely used photon sources. In combination with its extremely stable operation, a clinical LINAC ensures that photoactivation studies can be performed for a wide number of targets with very limited beamtime.
description: 18 pages, 6 figures, Nucl. Inst. Meth. Phys. Res. A
ST-PIL: Spatial-Temporal Periodic Interest Learning for Next Point-of-Interest Recommendation
Creators: name: Cui, Qiang
name: Zhang, Chenrui
name: Zhang, Yafeng
name: Wang, Jinpeng
name: Cai, Mingchen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Point-of-Interest (POI) recommendation is an important task in location-based social networks. It facilitates the relation modeling between users and locations. Recently, researchers recommend POIs by long- and short-term interests and achieve success. However, they fail to well capture the periodic interest. People tend to visit similar places at similar times or in similar areas. Existing models try to acquire such kind of periodicity by user's mobility status or time slot, which limits the performance of periodic interest. To this end, we propose to learn spatial-temporal periodic interest. Specifically, in the long-term module, we learn the temporal periodic interest of daily granularity, then utilize intra-level attention to form long-term interest. In the short-term module, we construct various short-term sequences to acquire the spatial-temporal periodic interest of hourly, areal, and hourly-areal granularities, respectively. Finally, we apply inter-level attention to automatically integrate multiple interests. Experiments on two real-world datasets demonstrate the state-of-the-art performance of our method.
Instrumented Collective Learning Situations (ICLS): the Gap between Theoretical Research and Observed Practices
Creators: name: Michel, Christine
name: Garrot, Elise
name: George, Sebastien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: K.3.1

description: According to socio-constructivism approach, collective situations are promoted to favor learning in classroom, at a distance or in a blended educational context. So, many Information and Communication Technologies (ICT) are provided to teachers but there are no clear studies about the way they are used and perceived. Our research is based on the hypothesis that practices of educational actors (instructional designers and tutors) are far away from theoretical results of research in education technologies. In this paper, we consider a precise kind of situation: Instrumented Collective Learning Situations (ICLS). By a survey on 13 fields in higher education in France, Switzerland and Canada, we present how ICLS are designed and how teachers used them. Conclusions give an indication on the gap between the way information technologies are prescribed and the way they are actually used and perceived by teachers.
Symmetric Crystals for $\gl_\infty$
Creators: name: Enomoto, Naoya
name: Kashiwara, Masaki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B37, 20C08

description: In the preceding paper, we formulated a conjecture on the relations between certain classes of irreducible representations of affine Hecke algebras of type B and symmetric crystals for $\gl_\infty$. In the present paper, we prove the existence of the symmetric crystal and the global basis for $\gl_\infty$.
description: 39pages
Aspect-Based Sentiment Analysis Techniques: A Comparative Study
Creators: name: Jayakody, Dineth
name: Isuranda, Koshila
name: Malkith, A V A
name: de Silva, Nisansa
name: Ponnamperuma, Sachintha Rajith
name: Sandamali, G G N
name: Sudheera, K L K
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Since the dawn of the digitalisation era, customer feedback and online reviews are unequivocally major sources of insights for businesses. Consequently, conducting comparative analyses of such sources has become the de facto modus operandi of any business that wishes to give itself a competitive edge over its peers and improve customer loyalty. Sentiment analysis is one such method instrumental in gauging public interest, exposing market trends, and analysing competitors. While traditional sentiment analysis focuses on overall sentiment, as the needs advance with time, it has become important to explore public opinions and sentiments on various specific subjects, products and services mentioned in the reviews on a finer-granular level. To this end, Aspect-based Sentiment Analysis (ABSA), supported by advances in Artificial Intelligence (AI) techniques which have contributed to a paradigm shift from simple word-level analysis to tone and context-aware analyses, focuses on identifying specific aspects within the text and determining the sentiment associated with each aspect. In this study, we compare several deep-NN methods for ABSA on two benchmark datasets (Restaurant14 and Laptop-14) and found that FAST LSA obtains the best overall results of 87.6% and 82.6% accuracy but does not pass LSA+DeBERTa which reports 90.33% and 86.21% accuracy respectively.
X-ray Observations and Infrared Identification of the Transient 7.8 s X-ray Binary Pulsar XTE J1829-098
Creators: name: Halpern, J. P.
name: Gotthelf, E. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: XMM-Newton and Chandra observations of the transient 7.8 s pulsar XTE J1829-098 are used to characterize its pulse shape and spectrum, and to facilitate a search for an optical or infrared counterpart. In outburst, the absorbed, hard X-ray spectrum with Gamma = 0.76+/-0.13 and N_H = (6.0+/-0.6) x 10^{22} cm^{-2} is typical of X-ray binary pulsars. The precise Chandra localization in a faint state leads to the identification of a probable infrared counterpart at R.A. = 18h29m43.98s, decl. = -09o51'23.0" (J2000.0) with magnitudes K=12.7, H=13.9, I>21.9, and R>23.2. If this is a highly reddened O or B star, we estimate a distance of 10 kpc, at which the maximum observed X-ray luminosity is 2x10^{36} ergs s^{-1}, typical of Be X-ray transients or wind-fed systems. The minimum observed luminosity is 3x10^{32}(d/10 kpc)^2 ergs s^{-1}. We cannot rule out the possibility that the companion is a red giant. The two known X-ray outbursts of XTE J1829-098 are separated by ~1.3 yr, which may be the orbital period or a multiple of it, with the neutron star in an eccentric orbit. We also studied a late M-giant long-period variable that we found only 9" from the X-ray position. It has a pulsation period of ~1.5 yr, but is not the companion of the X-ray source.
description: 6 pages, 7 figures. To appear in The Astrophysical Journal
Limitations and rotation of the two-armed phase spiral in the Milky Way stellar disc
Creators: name: Alinder, Simon
name: McMillan, Paul
name: Bensby, Thomas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: The Milky Way's history of recent disturbances is vividly demonstrated by a structure in the vertical phase-space distribution known as the Gaia phase spiral. A one-armed phase spiral has been seen widely across the Milky Way disc, while a two-armed one has only been observed in the solar neighbourhood. Aims: This study aims to determine the properties of the two-armed phase spiral and to put it in a Galactic context, with the ultimate goal of understanding the structure and history of the Milky Way disc. Methods: The Gaia DR3 data is used to trace and characterise the two-armed phase spiral. Special focus is put on the phase spiral's spatial distribution, rotational behaviour, and chemical characteristics. To quantify the properties of the phase spiral we use a model that fits a spiral pattern to the phase space distribution of the stars. Results: We find that the two-armed phase spiral is detectable only within a narrow range of galactocentric distances and angular momenta in the solar neighbourhood, $R = 8 \pm 0.5 $ kpc, $L_Z = 1450 \pm 50$ kpc km s$^{-1}$. Outside this region, the phase spiral is one-armed. The two-armed phase spiral rotates with the phase angle, like the one-armed phase spiral, and changes axis ratio with phase angle. Additionally, stars within the phase-space overdensity caused by the two-armed phase spiral pattern have slightly higher mean metallicity than stars in the underdense regions of the pattern at equivalent galactocentric distances, angular momenta, and vertical orbit extents. Conclusions: The two-armed phase spiral rotates with phase angle and its effect can be seen in metallicity, like the one-armed phase spiral. However, the limited range over which it can be found, and its variation in shape are quite different from the one-armed version, suggesting it is a much more localised phenomenon in the Galactic disc.
description: Submitted to A&A
Additional file 2: of Activation of LXRɑ/β by cholesterol in malignant ascites promotes chemoresistance in ovarian cancer
Creators: name: Kim, Soochi
name: Lee, Maria
name: Dhanasekaran, Danny
name: Song, Yong
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Table S1. Information of primary cancer cells isolated from ovarian cancer patient derived ascites. (DOCX 14 kb)
Anomalous dimensions of leading twist conformal operators
Creators: name: Belitsky, A. V.
name: Henn, J.
name: Jarczak, C.
name: Müller, D.
name: Sokatchev, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend and develop a method for perturbative calculations of anomalous dimensions and mixing matrices of leading twist conformal primary operators in conformal field theories. Such operators lie on the unitarity bound and hence are conserved (irreducible) in the free theory. The technique relies on the known pattern of breaking of the irreducibility conditions in the interacting theory. We relate the divergence of the conformal operators via the field equations to their descendants involving an extra field and accompanied by an extra power of the coupling constant. The ratio of the two-point functions of descendants and of their primaries determines the anomalous dimension, allowing us to gain an order of perturbation theory. We demonstrate the efficiency of the formalism on the lowest-order analysis of anomalous dimensions and mixing matrices which is required for two-loop calculations of the former. We compare these results to another method based on anomalous conformal Ward identities and constraints from the conformal algebra. It also permits to gain a perturbative order in computations of mixing matrices. We show the complete equivalence of both approaches.
description: 21 pages, 4 figures; references added
A systematic review on expert systems for improving energy efficiency in the manufacturing industry
Creators: name: Ioshchikhes, Borys
name: Frank, Michael
name: Weigold, Matthias
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Against the backdrop of the European Union's commitment to achieve climate neutrality by 2050, efforts to improve energy efficiency are being intensified. The manufacturing industry is a key focal point of these endeavors due to its high final electrical energy demand, while simultaneously facing a growing shortage of skilled workers crucial for meeting established goals. Expert systems (ESs) offer the chance to overcome this challenge by automatically identifying potential energy efficiency improvements and thereby playing a significant role in reducing electricity consumption. This paper systematically reviews state-of-the-art approaches of ESs aimed at improving energy efficiency in industry, with a focus on manufacturing. The literature search yields 1692 results, of which 54 articles published between 1987 and 2023 are analyzed in depth. These publications are classified according to the system boundary, manufacturing type, application perspective, application purpose, ES type, and industry. Furthermore, we examine the structure, implementation, utilization, and development of ESs in this context. Through this analysis, the review reveals research gaps, pointing toward promising topics for future research.
description: 23 pages, 7 figures, journal
Open Access Monographs Beyond the BPC: The Open Book Collective
Creators: name: Fathallah, Judith
Publisher: name: Zenodo
Year: 2021
Subjects: open access, open access books, monographs, COPIM, infrastructures, oa

description: Open Access Monographs Beyond the BPC: The Open Book Collective The Community-led Open Publication Infrastructures for Monographs is an international collaborative project bringing together a range of researchers, universities, librarians, open access book publishers and infrastructure providers (www.copim.ac.uk). One major output of the COPIM project Open Book Collective, a collaboration between librarians, scholarly publishers and OA infrastructure providers. The Open Book Collective will support a user-friendly, integrated platform to help stakeholders explore, discover, access and support OA books from a range of leading publishers and infrastructure providers via high-quality integrated metadata and a fully searchable catalogue. In a bid to think beyond the Book Processing Charges that can sustain inequity in academic publishing, we will to offer a choice of flexible subscription packages, through which patrons can choose to support individual publishers and schemes, or indeed the entire collective. Whilst our major stakeholders will be librarians and publishers, the catalogue and metadata functions will be freely available to everyone. We will also be providing space for OA publishers to display their current and forthcoming books. Our mission is to build and maintain an infrastructure to support the publication, discovery and distribution of OA books via a range of flexible subscription packages, and make it easy for OA books to be delivered to libraries. We have already partnered with the group of publishers that form the ScholarLed collective, with whom we are piloting the platform, but are building with the aim of flexible expansion to include more publishers in time. We have also partnered with JISC and DOAB, who are assisting in the management of revenue, curation, metadata and systems of preservation. In this talk, I will discuss the progress of the Collective and platform, and invite stakeholders to get involved and join us in this more sustainable and equitable model for publishing and distributing open access books.
title: Διδάσκοντας Φυσική στην Δευτεροβάθμια Εκπαίδευση με το μοντέλο της "Ανεστραμμένης Τάξης"
title: Teaching Physics in Secondary School with the "Flipped Classroom" model
titleType: AlternativeTitle
Creators: name: Μαστοράκη, Μαρία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Ανεστραμμένη τάξη
Φυσική
Ειδικές εκπαιδευτικές ανάγκες

description: Εισαγωγή:Το μοντέλο της ανεστραμμένης τάξης αποτελεί μια νέα διδακτική προσέγγιση μέσω των τεχνολογιών, στο πλαίσιο της προσπάθειας των εκπαιδευτικών να προσελκύσουν το ενδιαφέρον των μαθητών και να ενισχύσουν την συμμετοχή τους στη μαθησιακή διαδικασία. Με αυτή τη μέθοδο διδασκαλίας οι μαθητές μαθαίνουν τη νέα γνώση μέσα από διαδραστικό υλικό στο σπίτι , πριν πάνε στο σχολείο και στο σχολείο αξιοποιούν τον διδακτικό χρόνο για την επίλυση προβλημάτων ή την εκπόνηση δημιουργικότερων δραστηριοτήτων. Σκοπός: Στόχος της έρευνας είναι να διερευνήσει αν η εφαρμογή της ανεστραμμένης τάξης στη διδασκαλία της Φυσικής συμβάλλει στην δημιουργικότερη αξιοποίηση του διδακτικού χρόνου αλλά και στην απόκτηση μιας θετικής στάσης των μαθητών απέναντι στο μάθημα με αποτέλεσμα την αύξηση της εμπλοκής τους στην μαθησιακή διαδικασία και τη βελτίωση των επιδόσεων τους. Ιδιαίτερη έμφαση δόθηκε στην διερεύνηση της επίδρασης της μεθόδου σε μαθητές με ειδικές εκπαιδευτικές ανάγκες. Μέθοδος: Πραγματοποιήθηκε έρευνα διάρκειας εννέα εβδομάδων σε 50 μαθητές Γυμνασίου ηλικίας 14-15 ετών, όπου χωρίστηκαν σε δύο ομάδες ίδιου αριθμού μαθητών. Στην πειραματική ομάδα η διδασκαλία της φυσικής πραγματοποιήθηκε εφαρμόζοντας το μοντέλο της ανεστραμμένης τάξης ενώ στην ομάδα ελέγχου η διδασκαλία της φυσικής πραγματοποιήθηκε εφαρμόζοντας την παραδοσιακή διδασκαλία. Στα δεδομένα που συλλέχθηκαν από τεστ και ερωτηματολόγια πριν και μετά την παρέμβαση έγινε περιγραφική ανάλυση αλλά και επαγωγική στατιστική ανάλυση με τη βοήθεια του SPSS για την επιβεβαίωση των ενδείξεων. Πιο συγκεκριμένα χρησιμοποιήθηκε ο έλεγχος t-test για 2 ανεξάρτητα δείγματα (Indepentet Sample t-test), έτσι ώστε να ελεγχθεί αν υπάρχει στατιστικά σημαντική διαφορά ως προς τον μέσο βαθμό εμπλοκής των μαθητών , ως προς την μέση επίδοση τους αλλά και ως προς την ανάπτυξη κινήτρων μάθησης για το σύνολο των 9 εβδομάδων ανάμεσα στις δύο ομάδες διδασκαλίας. Αποτελέσματα: Από την ανάλυση των δεδομένων προέκυψαν ενδείξεις για τη θετική επίδραση του μοντέλου στην ανάπτυξη κινήτρων και στην ενεργό συμμετοχή των μαθητών στην μαθησιακή διαδικασία , που είχε σαν αποτέλεσμα την βελτίωση των επιδόσεων τους στις γραπτές δοκιμασίες. Ίδια ήταν η επίδραση του μοντέλου και στους μαθητές με ειδικές εκπαιδευτικές ανάγκες. Συμπεράσματα: Τα αποτελέσματα έδειξαν ότι η εφαρμογή του μοντέλου της ανεστραμμένης τάξης στη διδασκαλία της Φυσικής μπορεί να συμβάλει τόσο στην πιο δημιουργική αξιοποίηση του διδακτικού χρόνου όσο στην αύξηση της ενεργού συμμετοχής των μαθητών στην εκπαιδευτική διαδικασία, που έχει σαν αποτέλεσμα την βελτίωση των επιδόσεων τους. Διατηρούνται όμως κάποιες επιφυλάξεις για την γενίκευση των συμπερασμάτων λόγω του μικρού αριθμού του δείγματος και της περιορισμένης χρονικής διάρκειας της έρευνας.
The [Y/Mg] chemical clock in the Galactic Disk: The influence of metallicity and Galactic population in the solar neighbourhood
Creators: name: Shejeelammal, J.
name: Meléndez, Jorge
name: Rathsam, Anne
name: Martos, Giulia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar ages are an important parameter to study the chemical evolution of the Galaxy. In recent years, several studies have established the existence of a relationship between chemical clocks and stellar ages. The [Y/Mg] clock is a promising technique, but there are still several open questions, such as its validity for metal-poor stars and differences between the thin and thick disk populations. Our aim is to study the behaviour of the [Y/Mg] chemical clock with stellar ages and the effect of metallicity and population on this chemical clock for a sample of solar-type disk stars. We have derived the precise stellar atmospheric parameters as well as the elemental abundances of Mg and Y through line-by-line differential spectroscopic analysis for a sample of 48 metal-poor solar-type stars based on high-quality, high-resolution ESO/HARPS spectra. From the high-precision Gaia astrometric data, stellar masses and ages were estimated through isochrone-fitting. A joint analysis of our sample, together with a sample of 185 solar-twins and analogues from our previous works, is performed to calibrate the [Y/Mg] chemical clock in the Galactic disk for $-$0.71 $\leq$ [Fe/H] $<$ +0.34. Open clusters and stars with asteroseismic ages have been used to validate our relations. Two different populations could be clearly seen in the [Mg/Fe] - [Fe/H] plane - the thick and thin disks. We found a metallicity-dependent, strong anti-correlation between the [Y/Mg] ratio and stellar ages of our sample. For the first time in the literature, we report similar correlations for the thin and thick disk stars. The [Y/Mg] relation(s) found here for solar-type stars is compatible with the literature using solar-twins. Our relation provides higher accuracy and precision of 0.45 and 0.99 Gyr, respectively, comparable with the best accuracy achieved for the solar-twins till date.
description: Accepted for publication in the section "8. Stellar atmospheres" of Astronomy & Astrophysics journal
Topology of HI in the Large Magellanic Cloud
Creators: name: Kim, S.
name: Park, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analyzed the HI aperture synthesis image of the Large Magellanic Cloud (LMC), using an objective and quantitative measure of topology to understand the HI distribution hosting a number of holes and clumps of various sizes in the medium. The HI distribution shows different topology at four different chosen scales. At the smallest scales explored (19-29 pc), the HI mass is distributed in such a way that numerous clumps are embedded on top of a low density background. At the larger scales from 73 to 194 pc, it shows a generic hole topology. These holes might have been formed mainly by stellar winds from hot stars. At the scales from 240 to 340 pc, slightly above the disk scale-height of the gaseous disk, major clumps in the HI map change the distribution to have a slight clump topology. These clumps include the giant cloud associations in the spiral arms and the thick filaments surrounding superholes. At the largest scales studied (390-485 pc), the hole topology is present again. Responsible to the hole topology at this scale are a few superholes which seem mainly associated with supernova explosions in the outer disk. The gaps between the bar and spiral arms have a minor effect on the topology at this scale.
description: 6 pages, 5 figures, accepted for publication in ApJ
An hybrid framework OTFS OFDM based on mobile speed estimation
Creators: name: Darghouthi, Amina
name: Khlifi, Abdelhakim
name: Shaiek, Hmaied
name: Salah, Fatma Ben
name: Chibani, Belgacem
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The Future wireless communication systems face the challenging task of simultaneously providing high quality of service (QoS) and broadband data transmission, while also minimizing power consumption, latency, and system complexity. Although Orthogonal Frequency Division Multiplexing OFDM has been widely adopted in 4G and 5G systems, it struggles to cope with the significant delay and Doppler spread in high mobility scenarios. To address these challenges, a novel waveform called Orthogonal Time Frequency Space OTFS has emerged, aiming to outperform OFDM by closely aligning signals with the channel behaviour. In this paper, we propose a switching strategy that empowers operators to select the most appropriate waveform based on the estimated speed of the mobile user. This strategy enables the base station to dynamically choose the waveform that best suits the mobile users speed. Additionally, we suggest integrating an Integrated Sensing and Communication radar for accurate Doppler estimation, providing precise information to aid in waveform selection. By leveraging the switching strategy and harnessing the Doppler estimation capabilities of an ISAC radar, our proposed approach aims to enhance the performance of wireless communication systems in scenarios of high mobility. Considering the complexity of waveform processing, we introduce an optimized hybrid system that combines OTFS and OFDM, resulting in reduced complexity while still retaining performance benefits. This hybrid system presents a promising solution for improving the performance of wireless communication systems in scenarios with a high mobility. The simulation results validate the effectiveness of our approach, demonstrating its potential advantages for future wireless communication systems. The effectiveness of the proposed approach is validated by simulation results as it will be shown.
description: 19 Page(pp:49-67);10 figures; 2 tables
Deliverable 4.1 Case Studies published
Creators: name: Pals, Auke
Publisher: name: Zenodo
Year: 2021
Subjects: Privacy and Trust Enhancing Technologies
Human Centric Internet

description: This deliverable outlines the strategy on the approach to get case studies published for the NGI Trust projects. It provides details on the main objectives, selection, method of gathering the case studies and the communication channels. The case studies outline the importance and impact of the projects ensuring that research infrastructure managers, policy makers and funders, and other interested stakeholders rapidly become aware of the projects and impact of the NGI Trust project.
IRAC Observations of CO J=4-3 High-Velocity Cloud in the 30 Doradus Complex in the Large Magellanic Cloud
Creators: name: Kim, H-S.
name: Kim, S.
name: Bak, J. Y.
name: Garcia, M.
name: Brandl, B.
name: Xiao, K.
name: Walsh, W.
name: Smith, R. C.
name: Youn, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the CO 2-1 observations against previously taken CO 4-3 observations and analyze the spatial distribution of young stellar objects (YSO's) within the cloud using the Spitzer IRAC observations of the 30 Doradus complex. Both peaks of CO 2-1 and 4-3 emitting clouds coincide with the densest region of the filaments where multiple shells are colliding. We find that the YSO's are clustered in the southern ridge of the warm and dense molecular gas clouds traced by CO J=4-3, indicating a filamentary structure of star formation throughout the 30 Doradus. We also find that some of Class I YSO's candidates which are likely to be associated with a high-velocity component of CO 4-3 emitting clouds are present. This is a bona fide place where the triggered star formation had happened and newly formed stars may have produced such a high-velocity outflow interacting with the surrounding molecular cloud material.
description: 17 pages, 7 figures, Submitted to ApJ
title: Οι Νέες Τεχνολογίες στη διδακτική της Ιστορίας στο Δημοτικό Σχολείο και εφαρμογές σε συμπεριληπτικά μαθησιακά περιβάλλοντα
title: New Technologies in the instruction of History in Primary School and applications in inclusive learning environments
titleType: AlternativeTitle
Creators: name: Κότσιρα, Μαρία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Νέες τεχνολογίες
Εκπαιδευτική διαδικασία
Επαυξημένη πραγματικότητα
Συμπερίληψη

description: Στις μέρες μας, η αξιοποίηση της επαυξημένης πραγματικότητας στην εκπαίδευση συνδέεται με πληθώρα παιδαγωγικών αντικειμένων, μεταξύ των οποίων η ιστορία η γεωγραφία, οι φυσικές επιστήμες και οι τέχνες. Άλλωστε, η εκτεταμένη χρήση των ηλεκτρονικών υπολογιστών στην εκπαιδευτική διαδικασία, κατά τα τελευταία έτη, καθώς και η εξοικείωση των εκπαιδευομένων με τη χρήση του διαδικτύου και των εφαρμογών, που συνδέονται με τη λειτουργία του, οδηγεί στην αναζήτηση δημιουργικών μεθόδων, οι οποίες θα ενισχύουν την αλληλεπίδραση κατά την παιδαγωγική προσέγγιση. Με τον τρόπο αυτό, προκύπτει ένα ψηφιακό μαθησιακό περιβάλλον, εντός του οποίου οι καταρτιζόμενοι αποκτούν πρόσβαση στη γνώση με διασκεδαστικό και διαδραστικό τρόπο, κάνοντας χρήση καινοτομιών και αποκτώντας τη δυνατότητα ελέγχου των γνώσεων τους. Η χρήση των ηλεκτρονικών υπολογιστών είναι ιδιαίτερα σημαντική στη διαφοροποιημένη διδασκαλία που εστιάζει στην συμπερίληψη όλων των μαθητών με σεβασμό στη μοναδικότητα του κάθε παιδιού. Σκοπός της παρούσας εργασίας είναι να αναδειχθεί ο ρόλος των νέων τεχνολογιών στην εκπαιδευτική διαδικασία, εξετάζοντας την περίπτωση της διδασκαλίας του μαθήματος της ιστορίας με τη χρήση εφαρμογών επαυξημένης πραγματικότητας. Ο σχεδιασμός αντίστοιχων εφαρμογών προϋποθέτει την άμεση εμπλοκή του εκπαιδευτικού και, όπως καταδείχθηκε από τη μελέτη περίπτωσης, τα οφέλη είναι εξαιρετικά σημαντικά, καθώς οι μαθητές αποκτούν ιδιαίτερο ενδιαφέρον για το μαθησιακό αντικείμενο και σημειώνουν υψηλότερες επιδόσεις, σε σύγκριση με τις συμβατικές μορφές διδασκαλίας.
A systematic review and meta-analysis of Optical coherence tomography studies in Schizophrenia, Bipolar disorder and Major depressive disorder
Creators: name: Prasannakumar, Akash
name: Kumar, Vijay
name: Mailankody, Pooja
name: Appaji, Abhishek
name: Battu, Rajani
name: Berendschot, Tos TJM
name: Rao, Naren P
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Objectives- Due to the common neurodevelopmental origin and easy accessibility, the retina serves as a surrogate marker for changes in the brain. Hence, Optical Coherence Tomography (OCT), a tool to examine the neuronal layers of retina has gained importance in investigating psychiatric disorders. Several studies in the last decade have reported retinal structural alterations in schizophrenia (SCZ), bipolar disorder (BD), and major depressive disorder (MDD). However, the findings are inconsistent. Hence, we conducted a meta-analysis to investigate alterations in OCT parameters in patients with SCZ, BD and MDD.
Map of metastable states for thin circular magnetic nano-cylinders
Creators: name: Metlov, Konstantin L.
name: Lee, Young Pak
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nano-magnetic systems of artificially shaped ferromagnetic islands, recently became a popular subject due to their current and potential applications in spintronics, magneto-photonics and superconductivity. When the island size is close to the exchange length of magnetic material (around 15 nm), its magnetic structure becomes markedly different. It determines both static and dynamic magnetic properties of elements, but strongly depends on their shape and size. Here we map this dependence for circular cylindrical islands of a few exchange lengths in size. We outline the region of metastability of "C"-type magnetic states, proving that they are indeed genuine and not a result of pinning on particle imperfections. A way to create the smallest particles with guaranteed magnetic vortex state at zero field becomes evident. It is expected that the map will help focus the efforts in planning of experiments and devices.
description: 3 pages, 1 figure
The effect of kick velocities on the spatial distribution of millisecond pulsars and implications for the Galactic center excess
Creators: name: Ploeg, Harrison
name: Gordon, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently it has become apparent that the Galactic center excess (GCE) is spatially correlated with the stellar distribution in the Galactic bulge. This has given extra motivation for the unresolved population of millisecond pulsars (MSPs) explanation for the GCE. However, in the "recycling" channel the neutron star forms from a core collapse supernovae that undergoes a random "kick" due to the asymmetry of the explosion. This would imply a smoothing out of the spatial distribution of the MSPs. We use N-body simulations to model how the MSP spatial distribution changes. We estimate the probability distribution of natal kick velocities using the resolved gamma-ray MSP proper motions, where MSPs have random velocities relative to the circular motion with a scale parameter of 77+/-6 km/s. We find that, due to the natal kicks, there is an approximately 10% increase in each of the bulge MSP spatial distribution dimensions and also the bulge MSP distribution becomes less boxy but is still far from being spherical.
description: 21+10 pages, 11+12 figures. V2: added references and minor typo corrected. V3: reflects JCAP accepted version
QED calculation of the 2p1/2-2s and 2p3/2-2s transition energies and the ground-state hyperfine splitting in lithiumlike scandium
Creators: name: Kozhedub, Y. S.
name: Glazov, D. A.
name: Artemyev, A. N.
name: Oreshkina, N. S.
name: Shabaev, V. M.
name: Tupitsyn, I. I.
name: Volotka, A. V.
name: Plunien, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present the most accurate up-to-date theoretical values of the {2p_{1/2}}-{2s} and {2p_{3/2}}-{2s} transition energies and the ground-state hyperfine splitting in ${\rm Sc}^{18+}$. All two- and three-electron contributions to the energy values up to the two-photon level are treated in the framework of bound-state QED without $\aZ$-expansion. The interelectronic interaction beyond the two-photon level is taken into account by means of the large-scale configuration-interaction Dirac-Fock-Sturm (CI-DFS) method. The relativistic recoil correction is calculated with many-electron wave functions in order to take into account the electron-correlation effect. The accuracy of the transition energy values is improved by a factor of five compared to the previous calculations. The CI-DFS calculation of interelectronic-interaction effects and the evaluation of the QED correction in an effective screening potential provide significant improvement for the $2s$ hyperfine splitting. The results obtained are in a good agreement with recently published experimental data.
description: 10 pages, 2 tables
Influence of flat bands on RKKY interaction: perspective of Fano defects
Creators: name: Luo, Yue-De
name: Yang, Min-Fong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, we revisit the effect of flat bands on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction by using a coordinate transformation that detangles flat-band states from dispersive ones. Under this transformation, original flat-band systems containing magnetic impurities are mapped onto a generalized Fano-Anderson model, where flat-band states act as Fano defects. From this perspective, several features of exact RKKY couplings calculated numerically can be understood easily. As an illustrative example, we analyze a dimerized diamond chain model, which can exhibit either gapped or gapless spectra depending on the ratio of hopping integrals. We find that anomalous decay in the RKKY couplings arises exclusively in the gapless case and with specific magnetic coupling configurations. Furthermore, the conventional wisdom regarding the signs of RKKY interactions breaks down under certain conditions. These subtleties arising from flat bands find explanation within our present approach. Our investigation offers deeper insights into how flat bands influence carrier-mediated exchange interactions, with implications extending to broader contexts.
description: Accepted version. 9 pages, 7 figures
Draft version for stakeholder interaction and discussion - Mapping GDPR Roles and Responsibilities to Scientific Data Sharing Networks
Creators: name: Becker, Regina
name: Thorogood, Adrian
name: Bovenberg, Jasper
name: Hall, Alison
name: Mitchell, Colin
name: 1+MG WG2
Publisher: name: Zenodo
Year: 2022
Subjects: 1+MG
B1MG
1+Million Genomes Initiative
Beyond 1 million genomes
ELSI
GDPR
GDPR Roles and responsibiliites

description: A key aspect of European data protection law is ensuring all parties dealing with personal data have clearly assigned legal roles, and by extension, responsibilities. Key roles defined by the European General Data Protection Regulation (GDPR) include controllers, joint controllers, and processors.1 One of the purposes of assigning these explicit roles is to ensure there is no gap in responsibility to protect the fundamental rights of data subjects as data are exchanged between multiple actors. Question: What GDPR roles apply where a health research project is conducted using data accessed from one or more data providers?
title: Zeolite catalysts for nitric oxide production
Creators: name: Russell, Samantha
Publisher: name: University of St Andrews
Year: 2019

description: This thesis considers the nitric oxide production from a range of zeolite catalysts with either acid or copper active sites. The aim of the research was to find potential candidates for stent coatings that could help to prevent stent thrombosis. Acid site mordenite, ferrierite, SSZ-13 and ZSM-5 are studied in chapter 4 for the catalytic conversion of sodium nitrite to nitric oxide. All zeolites successfully produced nitric oxide, with ranging levels of conversion from 14 – 24 %. Recycled samples revealed the consumption of the acid site, rendering the acid site zeolites non-catalytic. Copper site zeolites were considered in chapters 5 and 6, with copper mordenite, ferrierite, SSZ-13, ZSM-5 and UZM-4 being studied. All zeolites successfully converted sodium nitrite to nitric oxide, with SSZ-13, ZSM-5 and UZM-4 producing around 100 % conversion. The use of cysteine as a sacrificial reductant to activate the copper sites allowed catalytic nitric oxide production. The promising catalytic tests led to further studies of the materials, including copper leaching and toxicology. Chapter 6 looked further into the catalytic copper zeolites with nitric oxide flow studies and polymer incorporation. Flow studies showed sustained levels of nitric oxide production. Incorporation of the zeolite powders into the polymer of intrinsic microporosity, EATB(Me), showed good nitric oxide production from the initial studies. Recycled samples, however, showed a drop in production. Lastly, chapter 7 explored the use of the ADOR (Assembly-Disassembly-Organisation- Reassembly) process to generate a series of zeolites for catalysis. Aluminium was incorporated into zeolites IPC-2, 4 and 6 through the organisation step to create aluminated zeolites. The aforementioned zeolites, as well as Al-UTL, were assessed for nitric oxide production with acid active sites. The results showed an interesting relation between ring size and nitric oxide production, with the largest rings of Al-UTL having the highest production and the smallest rings of Al-IPC-4 having the lowest.
Strong coupling limit/region of lattice QCD
Creators: name: Ohnishi, A.
name: Kawamoto, N.
name: Miura, K.
name: Tsubakihara, K.
name: Maekawa, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the phase diagram of quark matter and nuclear properties based on the strong coupling expansion of lattice QCD. Both of baryon and finite coupling correction are found to have effects to extend the hadron phase to a larger mu direction relative to Tc. In a chiral RMF model with logarithmic sigma potential derived in the strong coupling limit of lattice QCD, we can avoid the chiral collapse and normal and hypernuclei properties are well described.
description: Presented at Yukawa International Seminar (YKIS) 2006 on New Frontiers in QCD: Exotic Hadrons and Hadronic Matter, Kyoto, Japan, 20 Nov - 8 Dec 2006
The Hilbert space operator formalism within dynamical reduction models
Creators: name: Bassi, A.
name: Ghirardi, G. C.
name: Salvetti, D. G. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Unlike standard quantum mechanics, dynamical reduction models assign no particular a priori status to `measurement processes', `apparata', and `observables', nor self-adjoint operators and positive operator valued measures enter the postulates defining these models. In this paper, we show why and how the Hilbert-space operator formalism, which standard quantum mechanics postulates, can be derived from the fundamental evolution equation of dynamical reduction models. Far from having any special ontological meaning, we show that within the dynamical reduction context the operator formalism is just a compact and convenient way to express the statistical properties of the outcomes of experiments.
description: 25 pages, RevTeX. Changes made and two figures added
Strangeness-Correlations on the pseudo-critical line in (2+1)-flavor QCD
Creators: name: Bollweg, D.
name: Ding, H. -T.
name: Goswami, J.
name: Karsch, F.
name: Mukherjee, Swagato
name: Petreczky, P.
name: Schmidt, C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present some lattice QCD results on first ($χ_1^i$) and second ($χ_2^i$) cumulants of and correlations ($χ_{11}^{ij}$) among net baryon-number ($B$), strangeness ($S$) and electric charge ($Q$) along the pseudo-critical line ($T_{pc}(μ_B)$) in the temperature ($T$)--baryon chemical potential ($μ_B$) phase diagram of (2+1)-flavor QCD. We point out that violations of the isospin symmetric limit of vanishing electric charge chemical potential are small along the $T_{pc}(μ_B)$ for the entire range of $μ_B$ covered in the RHIC beam energy scan. For the strangeness neutral matter produced in heavy-ion collisions this leads to a close relation between $χ_{11}^{BS}$ and $χ_{11}^{QS}$. We compare lattice QCD results for $χ_{11}^{BS}/χ_2^S$ along the $T_{pc}(μ_B)$ line with preliminary experimental measurements of $χ_{11}^{BS}/χ_2^S$ for collision energies $7.7~{\rm GeV}\le \sqrt{s_{_{NN}}}\le 62.4~{\rm GeV}$. While we find good agreements for $\sqrt{s_{_{NN}}}\ge 39$~GeV, differences are sizeable at smaller values of $\sqrt{s_{_{NN}}}$. Moreover, we compare lattice QCD results for the ratio of the strangeness ($μ_S$) to baryon ($μ_B$) chemical potentials, which define a strangeness neutral system with fixed electric charge to baryon number density, with experimental results obtained by the STAR collaboration for $μ_S/μ_B$ using strange baryon yields on the freeze-out line. Finally, we determine the baryon chemical potential at the freeze-out ($μ_B^f$) by comparing $χ_1^B/χ_2^B$ along the $T_{pc}(μ_B)$ with the experimentally measured net-proton cumulants $χ_1^p/χ_2^p$. We find that $\{μ_B^f, T_{pc}(μ_B^f) \}$ are consistent with the freeze-out parameters of the statistical-model fits to experimentally measured hadron yields for $\sqrt{s_{_{NN}}} \geq 11.5$ GeV.
description: 9 pages, 6 figures