cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Εκπαιδευτικές εικονικές περιηγήσεις 360ο: το Λαογραφικό και Ιστορικό Μουσείο Νάουσας
Creators: name: Πέκαλη, Βασιλική Μερκουρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: εικονική διαδραστική περιήγηση360ο
αξιολόγηση εικονικού μουσείου
360 virtual interactive tour
virtual interactive museum evaluation
virtual environment applications

description: Η παρούσα εργασία παρουσιάζει τη σχεδίαση και ανάπτυξη μίας εικονικής διαδραστικής περιήγησης στο Λαογραφικό και Ιστορικό Μουσείο Νάουσας. Χρησιμοποιώντας την εφαρμογή 360o IVMT of Naoussa, ο χρήστης εισέρχεται στο εικονικό μουσείο, όπου έχει τη δυνατότητα της περιήγησης στο χώρο του και της αλληλεπίδρασης μέσω των εκθεμάτων, σε μορφή κειμένου, εικόνας, τρισδιάστατου μοντέλου, βίντεο και συνδυασμό τους, όπου αυτό είναι εφικτό και χρήσιμο. Απώτερος σκοπός της εργασίας είναι η δια βίου μουσειακή εκπαίδευση, χωρίς να έχει όρια απόστασης, χρόνου και αριθμού επισκεπτών. Μετά από εκτεταμένη βιβλιογραφική ανασκόπηση, προέκυψε κενό στη βιβλιογραφία, σχετικά με τις αξιολογήσεις των εφαρμογών που δημιουργούνται για τις ανάγκες μιας εικονικής διαδραστικής περιήγησης. Με βάση αυτή έγινε πιλοτική εμπειρική μελέτη με στόχο την αξιολόγηση της εφαρμογής, η οποία σκοπό είχε την ψηφιοποίηση του ιστορικού και λαογραφικού μουσείου Νάουσας. Τα αποτελέσματα της, έδειξαν ότι η εφαρμογή ανήκει σε πολύ καλό επίπεδο όσον αφορά την ευχρηστία της. Προτάθηκαν πολύ μικρές διορθώσεις όσον αφορά την προσθήκη επιπλέον αλληλεπίδρασης και με άλλα εκθέματα, όπως επίσης και την βελτίωση του προσανατολισμού. Παρόλα αυτά, βασικό πρόβλημα που προέκυψε, ήταν η δυσχρηστία του εργαλείου που επιλέχθηκε για την αξιολόγηση της εφαρμογής όσον αφορά την εικονική περιήγηση 360ο
description: This paper aims at presenting the stages of the development and evaluation of the 360o IVMT application of Naoussa. The application is an interactive virtual tour of the Folklore and Historical Museum of Naoussa. Using the 360o IVMT application of Naoussa via computer, the user can enter into the Virtual Museum, where they have the ability to navigate its interior and interact with the exhibits through media such as text, image, 3D models, video or even through a combination of these, when it is feasible and useful. The preferred technology is virtual reality, and the part of the virtual 360o interactive tour used is still in progress and development. The last purpose of the work is lifelong museum education, offered without limits such as distance, time and number of visitors. After an extensive literature review, a research gap was identified in relation to ratings of applications created for the needs of a virtual interactive tour. The empirical study was conducted with extensive critical review in international literature and the results follow in the applications’ evaluation showed that the application is of an exceptional level. Minor corrections such as adding additional interaction with other exhibits as well as improving the orientation scope were proven useful. The basic conclusion drawn showed the complexity of the selected tool for evaluating the 360o virtual tour application
Unraveling the secrets of turbulence in a fluid puff
Creators: name: Mazzino, Andrea
name: Rosti, Marco E
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Turbulent puffs are ubiquitous in everyday life phenomena. Understanding their dynamics is important in a variety of situations ranging from industrial processes to pure and applied science. In all these fields, a deep knowledge of the statistical structure of temperature and velocity space/time fluctuations is of paramount importance to construct models of chemical reaction (in chemistry), of condensation of virus-containing droplets (in virology and/or biophysics), and optimal mixing strategies in industrial applications. As a matter of fact, results of turbulence in a puff are confined to bulk properties (i.e. average puff velocity and typical decay/growth time) and dates back to the second half of the 20th century. There is thus a huge gap to fill to pass from bulk properties to two-point statistical observables. Here we fill this gap exploiting theory and numerics in concert to predict and validate the space/time scaling behaviors of both velocity and temperature structure functions including intermittency corrections. Excellent agreement between theory and simulations is found. Our results are expected to have profound impact to develop evaporation models for virus-containing droplets carried by a turbulent puff, with benefits to the comprehension of the airborne route of virus contagion.
Female Under-Representation in Audit Profession and Leadership
Creators: name: Bernardo, Sílvia
name: Pedrosa, Isabel
name: Monteiro, Daniela
Publisher: name: International Journal of Business Innovation
Year: 2024

description: Despite greater social awareness of gender equality, the underrepresentation of women is still a reality, especially, at higher hierarchical levels. The same issue can be observed either in Statutory Auditor (SA) profession or in Statutory Audit Firms (SAF) management in Portugal. Considering these, the goals of this study are to prove the underrepresentation of women in the SA profession and in the leadership of SAF in Portugal, as well as to highlight some of the reasons that lead to it. Firstly, an extensive literature review was carried out to grasp the reasons for female underrepresentation in certain professions. Secondly, data from the List of Portuguese SA and their firms of were analyzed and interpreted. Finally, interviews were conducted gathering ten SA members who belong to SAF management, selected under a convenience sample based on a predefined criteria. The results obtained allowed us to conclude about the underrepresentation of women in SA profession and in the leadership of their firms. This, and the other factors mentioned are connected to the historical male dominance in SA, which influences current women representativeness. As to the leadership of SAF, the main reason that keeps women at a lower level in the hierarchy is work-life balancing difficulty, usually with a great impact when combined with motherhood. But the presence of women in leader positions is positive because of the diversity it adds at different levels and identifying an area where there is women underrepresentation might be a contribute to UN ODS 5 about gender equality.
description: International Journal of Business Innovation, Volume 3 Issue 2 (2024)
Complex Structure of the Eastern Lobe of the Pictor A Radio Galaxy: Spectral Analysis and X-ray/Radio Correlations
Creators: name: Thimmappa, R.
name: Stawarz, Ł.
name: Pajdosz-Śmierciak, U.
name: Balasubramaniam, K.
name: Marchenko, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Here we present detailed analysis of the distinct X-ray emission features present within the Eastern radio lobe of the Pictor A galaxy, around the jet termination region, utilising the data obtained from the Chandra X-ray Observatory. Various emission features have been selected for the study based on their enhanced X-ray surface brightness, including five sources that appear point-like, as well as three extended regions, one characterised by a filamentary morphology. For those, we perform a basic spectral analysis within the 0.5-7keV range. We also investigate various correlations between the X-ray emission features and the non-thermal radio emission, utilising the high-resolution radio maps from the Very Large Array at GHz frequencies. The main novel findings following from our analysis, regard the newly recognized bright X-ray filament located upstream of the jet termination region, extending for at least thirty kiloparsec (projected), and inclined with respect to the jet axis. For this feature, we observe a clear anti-correlation between the X-ray surface brightness and the polarized radio intensity, as well as a decrease in the radio rotation measure with respect to the surroundings. We speculate on the nature of the filament, in particular addressing a possibility that it is related to the presence of a hot X-ray emitting thermal gas, only partly mixed with the non-thermal radio/X-ray emitting electrons within the lobe, combined with the reversals in the lobe's net magnetic field.
description: Final version, accepted for publication in The Astrophysical Journal
Optical, Infrared, and Ultraviolet Observations of the X-Ray Flash GRB 050416A
Creators: name: Holland, S. T.
name: Boyd, P. T.
name: Gorosabel, J.
name: Hjorth, J.
name: Schady, P.
name: Thomsen, B.
name: Augusteijn, T.
name: Blustin, A. J.
name: Breeveld, A.
name: De Pasquale, M.
name: Fynbo, J. P. U.
name: Gehrels, N.
name: Gronwall, C.
name: Hunsberger, S.
name: Ivanushkina, M.
name: Landsman, W.
name: Laursen, P.
name: McGowan, K.
name: Mangano, V.
name: Markwardt, C. B.
name: Marshall, F.
name: Mason, K. O.
name: Moretti, A.
name: Page, M. J.
name: Poole, T.
name: Roming, P.
name: Rosen, S.
name: Still, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ultraviolet, optical, and infrared photometry of the afterglow of the X-ray flash XRF 050416A taken between approximately 100 seconds and 36 days after the burst. We find an intrinsic spectral slope between 1930 and 22,200 Angstrom of beta = -1.14 +/- 0.20 and a decay rate of alpha = -0.86 +/- 0.15. There is no evidence for a change in the decay rate between approximately 0.7 and 4.7 days after the burst. Our data implies that there is no spectral break between the optical and X-ray bands between 0.7 and 4.7 days after the burst, and is consistent with the cooling break being redward of the K_s band (22,200 Angstrom) at 0.7 days. The combined ultraviolet/optical/infrared spectral energy distribution shows no evidence for a significant amount of extinction in the host galaxy along the line of sight to XRF 050416A. Our data suggest that the extragalactic extinction along the line of sight to the burst is only approximately A_V = 0.2 mag, which is significantly less than the extinction expected from the hydrogen column density inferred from $X$-ray observations of XRF 050416A assuming a dust-to-gas ratio similar to what is found for the Milky Way. The observed extinction, however, is consistent with the dust-to-gas ratio seen in the Small Magellanic Cloud. We suggest that XRF 050416A may have a two-component jet similar to what has been proposed for GRB 030329. If this is the case the lack of an observed jet break between 0.7 and 42 days is an illusion due to emission from the wide jet dominating the afterglow after approximately 1.5 days.
description: 22 pages, 5 figures, LaTeX, AASTeX 5.2 Minor changes made in response to the referee's report
Cosmic stellar relics in the Galactic halo
Creators: name: Salvadori, S.
name: Schneider, R.
name: Ferrara, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the stellar population history and chemical evolution of the Milky Way (MW) in a hierarchical LCDM model for structure formation. Using a Monte Carlo method based on the semi-analytical EPS formalism, we reconstruct the merger tree of our Galaxy and follow the evolution of gas and stars along the hierarchy. Our approach allows us to compare the observational properties of the MW with model results, exploring different properties of primordial stars, such as their IMF and the critical metallicity for low-mass star formation, Zcr. By matching our predictions to the Metallicity Distribution Function (MDF) of metal-poor stars in the Galactic halo we find that: (i) supernova feedback is required to reproduce the observed properties of the MW; (ii) stars with [Fe/H]0 or the masses of the first stars m_PopIII>0.9Msun; (v) the statistical impact of second generation stars, i.e stars forming out of gas polluted only by metal-free stars, is negligible in current samples; (vi) independently of Zcr, 60% of metals in the GM are ejected through winds by halos with masses M<6x10^9 Msun, showing that low-mass halos are the dominant population contributing to cosmic metal enrichment.
description: 18 pages, 12 figures, submitted to MNRAS
Η Μυκηναϊκή πολιτισμική παρουσία στο βόρειο Αιγαίο (Μυκηναϊκή κεραμική στην κεντρική Μακεδονία)
Creators: name: Κωνσταντίνου, Ολυμπία Ευαγγέλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μυκηναϊκή
Κεραμική
Μακεδονία
Mycenaean
Pottery
Macedonia

description: Η παρούσα εργασία μελετά την παρουσία της Μυκηναϊκού τύπου κεραμικής από τη συλλογή του French και από τους υπόλοιπους οικισμούς και τα νεκροταφεία της Μακεδονίας με στόχο την κατανόηση της έκτασης, έντασης και του χαρακτήρα της Μυκηναϊκής πολιτισμικής παρουσίας στην Κεντρική, σε σχέση με τις άλλες περιοχές της Μακεδονίας. Καταρχάς, γίνεται μια ανασκόπηση της μέχρι τώρα έρευνας και αναφέρονται τα ερωτήματα που αυτή έχει θέσει. Στη συνέχεια παρουσιάζεται η μεθοδολογία και ο σκοπός της καταγραφής της Μυκηναϊκού τύπου κεραμικής από τη συλλογή του French και ακολουθεί κατάλογος των οστράκων και συζήτηση των δεδομένων. Έπειτα, παρουσιάζονται οι οικισμοί της Μακεδονίας και η Μυκηναϊκού τύπου κεραμική που βρέθηκε σε αυτούς και ακολουθεί συζήτηση των δεδομένων. Στο τέταρτο κεφάλαιο, γίνεται παρουσίαση των νεκροταφείων στα οποία βρέθηκε Μυκηναϊκού τύπου κεραμική, παρουσίαση της κεραμικής και συζήτηση των δεδομένων. Στο πέμπτο και τελευταίο κεφάλαιο, γίνεται σύνθεση και συζήτηση των πληροφοριών που παρουσιάστηκαν στα προηγούμενα κεφάλαια και εξάγονται κάποια συμπεράσματα σχετικά με την παρουσία της Μυκηναϊκού τύπου κεραμικής στη Μακεδονία
description: The present thesis peruses the presence of the Mycenaean pottery in Macedonia from the French’s collection and the rest of the settlements and cemeteries aiming to understand the expansion, the tension and the character of its presence in central Macedonia in comparison to the other regions of Macedonia. At first, we make a reference to the questions that past researchers have made. Then, we present the methodology and the purpose of the study of the Mycenaean pottery from French’s collection. Then, follows a catalogue of the pottery and a discussion of the findings. Afterwards, we present the settlements of the Macedonia and the Mycenaean pottery which has been found at them and we also discuss these findings. In the fourth chapter, we present the cemeteries and the Mycenaean pottery which has been found at them and we also discuss these findings. In the fifth and final chapter, we discuss the information which presented in the past chapters and we draw some conclusions about the presence of the Mycenaean pottery in Macedonia
SEEKING THE POSITION OF JUDICIARY: A COMPARATIVE ANALYSIS OF SEEKING JUDICIAL APPOINTMENTS IN ISLAMIC LAW
Creators: name: IYAD MOHAMMAD DHEIF ALLAH ALSHYAB
name: Dr. ABDUL-NASER MOHAMMAD SALEH JABER
Publisher: name: Zenodo
Year: 2023
Subjects: Judiciary, Comparison, Study, Assuming, Position.

description: AbstractThis research aims to elucidate the ruling on assuming a judicial position in Islamic law using a comparative approach, with a specific focus on the opinions of Al-Baqqini. The nature of the study necessitated the use of the inductive method, which involves collecting and examining scientific material from its original sources, as well as the analytical method, which involves analyzing legal texts from the Quran and Sunnah to clarify their implications. Additionally, the comparative method is employed to present various jurisprudential opinions on contentious issues, attributing them to their respective proponents, providing evidence, and detailing discussions between different viewpoints. The study concludes that Al-Baqqini made multiple choices in his book on judiciary from his work "Al-Tadrib," deviating from his own school of thought. Among his choices regarding the judiciary is the obligation of seeking and accepting judicial appointments outside the region where the judge resides if there are qualified individuals for the position. The research asserts that judiciary is sanctioned in Islamic legislation based on evidence from the Quran, Sunnah, and consensus, aiming to resolve disputes, adjudicate people's cases to prevent harm, and uphold their interests.
Autonomous Taxation in Portugal
Creators: name: Gigante, Rita
name: Dinis, Ana Arromba
name: Pereira, Liliana
Publisher: name: International Journal of Business Innovation
Year: 2024

description: Tax complexity is a reality of modern tax systems in both developed and developing countries, as tax regimes have a significant impact on current and future business decisions. In Portugal, an additional tax, known as autonomous taxation, applicable to all taxpayers of corporate income tax, henceforth CIT, levied on certain charges that are not related to the activity of companies, which may be considered inconvenient or associated with evasive or even fraudulent practices. The objective of this research is to examine the subject of autonomous taxation in the context of tax arbitration case law in Portugal. Consequently, the arbitration decisions in which the complexity of autonomous taxation is referenced are analysed. The intention is to ascertain the reasons for this complexity and the resulting costs. The investigation carried out allows us to conclude that the complexity of Portuguese  tax system, more specifically, the complexity of autonomous taxation, may be related to the frequent changes in legislation, the uncertainty arising from the law and the diversification of tax rates, as well as the tax burden borne by taxpayers, which will lead to an increase in the number of disputes in the arbitration courts and, consequently, the cost of the proceedings, will remain high.
description: International Journal of Business Innovation, Volume 3 Issue 2 (2024)
Connecting and embedding the ELIXIR Metabolomics Community in a multi-omics world
Creators: name: Hoffmann, Nils
name: Giacomoni, Franck
name: De Martino, Luca
name: Mastrorocco, Fabrizio
name: Klapa, Maria
name: Neumann, Steffen
name: O’Donovan, Claire
name: Hecht, Helge
name: Community, The ELIXIR Europe Metabolomics
Publisher: name: F1000 Research Limited
Year: 2024

description: The ELIXIR Metabolomics community, originally established in 2017, is planning to readjust its direction and alignment with the recent trends in biomolecular and health research. This new strategy involves exploration and facilitation of increasingly holistic studies that combine data streams and models from different omics, often in combination or supported by machine learning. This includes alignment with the updated ELIXIR priority areas and program from 2024 and beyond and will be characterized by integrating different backgrounds, capabilities and strengths within the ELIXIR Metabolomics community, the ELIXIR network and neighboring activities, e.g. such as RDA. 



We plan to integrate data platforms and repositories, primary and metadata handling and integration of multi-omics data via existing or to be developed data standards, such as the ISA framework and others, as well as the provisioning and curation of user-friendly workflows via Galaxy and other workflow systems. To identify suitable standards and to identify gaps, some members participate in the RDA-OfR on Multi-omics Metadata Working Group.



Through recent projects at the BioHackathon Europe, the importance of multi-omics data submission has been highlighted. Observing the flurry of new communities, focus groups and general activities in ELIXIR centering around e.g. toxicology, single-cell analysis, or microbiomes, the need for FAIR data integration on the side of small molecules, in combination with the other drivers of biological processes, is the way forward. To drive these efforts, we will thus seek to intensify our interaction with the different communities and other key stakeholders within ELIXIR and beyond.
Ranking knots of random, globular polymer rings
Creators: name: Baiesi, M.
name: Orlandini, E.
name: Stella, A. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: An analysis of extensive simulations of interacting self-avoiding polygons on cubic lattice shows that the frequencies of different knots realized in a random, collapsed polymer ring decrease as a negative power of the ranking order, and suggests that the total number of different knots realized grows exponentially with the chain length. Relative frequencies of specific knots converge to definite values because the free energy per monomer, and its leading finite size corrections, do not depend on the ring topology, while a subleading correction only depends on the crossing number of the knots.
description: 4 pages, 5 figures
Additional file 2: of A metagenomic study of the gut microbiome in Behcetâ s disease
Creators: name: Ye, Zi
name: Zhang, Ni
name: Wu, Chunyan
name: Zhang, Xinyuan
name: Wang, Qingfeng
name: Huang, Xinyue
name: Du, Liping
name: Cao, Qingfeng
name: Tang, Jihong
name: Zhou, Chunjiang
name: Hou, Shengping
name: He, Yue
name: Xu, Qian
name: Xiong, Xiao
name: Kijlstra, Aize
name: Qin, Nan
name: Yang, Peizeng
Publisher: name: figshare
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Supplementary Figures. (PDF 975Â kb)
Ο κύκλος του νερού: Μια μαγική ιστορία»: Ένα ψηφιακό εκπαιδευτικό παιχνίδι για την πρωτοβάθμια εκπαίδευση
Creators: name: Δημόπουλος, Ραφαήλ-Θεμιστοκλής
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ψηφιακό εκπαιδευτικό παιχνίδι
Φάσεις νερού
Φυσική
Digital educational game
Phases of water
Science

description: Η επιτυχής κατανόηση των εννοιών που παρουσιάζονται στο μάθημα της Φυσικής, αποτελεί κίνητρο για τους δασκάλους όλων των ηλικιών. Η παρούσα εργασία στοχεύει στη δημιουργία ενός εκπαιδευτικού εργαλείου το οποίο συμβάλλει στη διαδικασία της μάθησης, ένα ψηφιακό εκπαιδευτικό παιχνίδι. Το παιχνίδι: «Ο κύκλος του νερού: Μια μαγική ιστορία» καλύπτει το βιβλιογραφικό κενό που εντοπίζεται στη Φυσική Πρωτοβάθμιας εκπαίδευσης. Τα φαινόμενα της τήξης, πήξης, εξάτμισης, βρασμού, συμπύκνωσης και κατακρήμνισης αποτελούν το κύριο αντικείμενο του παιχνιδιού καθώς και ο κύκλος του νερού γενικότερα. Οι δραστηριότητες που περιλαμβάνει στοχεύουν τόσο στην εκμάθηση του κάθε φαινομένου ξεχωριστά και τη διάκριση τους όσο και στην κατανόηση των αλλαγών που υπόκειται η κατάσταση των σωμάτων (αέρια, υγρή και στερεή). Ο σχεδιασμός του παιχνιδιού έγινε σύμφωνα με το μοντέλο σχεδιασμού εκπαιδευτικών παιχνιδιών LM – GM και υλοποιήθηκε με το λογισμικό συγγραφής Construct 2. Το παιχνίδι αξιολογήθηκε σε πιλοτική βάση από ειδικούς χρήστες – εκπαιδευτικούς, και από μικρή ομάδα μαθητών. Οι ειδικοί αξιολόγησαν το παιχνίδι ως προς τον βαθμό ανταπόκρισης του στους διδακτικούς στόχους και ως προς την ευχρηστία του. Οι μαθητές κλήθηκαν να το αξιολογήσουν μόνο σχετικά με την ευχρηστία του. Και οι δύο ομάδες έπαιξαν το παιχνίδι και έπειτα συμπλήρωσαν τα αντίστοιχα ερωτηματολόγια. Τα αποτελέσματα ήταν θετικά και από τις δύο ομάδες
description: A successful understanding of the concepts presented in the Physics lesson is an incentive for teachers of all ages. This work aims at creating an educational tool that contributes to the learning process, a digital educational game. The game: "The Water Cycle: A Magic Story" covers the bibliographic void found in Physics at Primary Education. The effects of melting, coagulation, evaporation, boiling, condensation and precipitation are the main subject of the game as well as the water cycle in general. Activities include both the learning of individual phenomena and their distinction, as well as the understanding of the changes in the condition of the bodies (gas, liquid and solid). The design of the game was based on the LM - GM educational game design model and was implemented with the Construct 2 authoring software. The game was evaluated on a pilot basis by special users - educators, and by a small group of students. Experts rated the game in terms of its response to the learning objectives and in its usability scale. The students were asked to evaluate it only about its usability. Both research teams played the game and then completed the corresponding questionnaires. The results were positive from both groups
Collective excitations of a Bose-Einstein condensate in an anharmonic trap
Creators: name: Li, Guan-Qiang
name: Fu, Li-Bin
name: Xue, Ju-Kui
name: Chen, Xu-Zong
name: Liu, Jie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the collective excitations of a one-dimensional Bose-Einstein condensate (BEC) with repulsive interaction between atoms in a quadratic plus quartic trap. By using the variational approach, the coupled equations of motion for the center-of-mass coordinate of the condensate and its width are derived. Then, two low-energy excitation modes are obtained analytically. The frequency shift induced by the anharmonic distortion, and the collapse and revival of the collective excitations, which originate from the nonlinear coupling between the two modes, are discussed.
description: 5 pages, 4 figures
Inverse Chameleon Mechanism and Mass Limits for Compact Stars
Creators: name: Wei, Hao
name: Yu, Zhong-Xi
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: As is well known, there are various mass limits for compact stars. For example, the maximum mass for non-rotating white dwarfs is given by the famous Chandrasekhar limit about $1.4 M_\odot$ (solar masses). Although the mass limit for neutron stars is not so clear to date, one of the widely accepted values is about $2.1 M_\odot\,$. Recently, challenges to these mass limits appeared. Motivated by the super-Chandrasekhar mass white dwarfs with masses up to $2.4 \sim 2.8 M_\odot\,$, and compact objects (probably neutron stars) in the mass gap (from $2.5 M_\odot$ or $3 M_\odot$ to $5 M_\odot$) inferred from gravitational waves detected by LIGO/Virgo in the third observing run (O3), we reconsider the mass limits for compact stars in the present work. Without invoking strong magnetic field and/or exotic equation of state (EOS), we try to increase the mass limits for compact stars in modified gravity theory. In this work, we propose an inverse chameleon mechanism, and show that the fifth-force mediated by the scalar field can evade the severe tests on earth, in solar system and universe, but manifest itself in compact stars such as white dwarfs and neutron stars. The mass limits for compact stars in the inverse chameleon mechanism can be easily increased to $3 M_\odot\,$, $5 M_\odot$ or even larger. We argue that the inverse chameleon mechanism might be constrained by the observations of exoplanets orbiting compact stars (such as white dwarfs and neutron stars), and gravitational waves from the last stage of binary compact star coalescence.
description: 18 pages, 1 figure, revtex4; v2: discussions added, JCAP in press; v3: published version
The Influence of Persuasion on Investor Decision
Creators: name: Broietti, Cleber
name: Rover, Suliani
Publisher: name: International Journal of Business Innovation
Year: 2024

description: The study aimed to analyse the impact of persuasion on students' decisions as non-professional investors in the context of the prospect theory. An experimental method involving 576 undergraduate students was used to conduct the research. The experiment manipulated two variables: persuasion and gain/loss, which are elements of the prospect theory. Persuasion was embedded in financial analyst reports, while gain/loss was reflected in the values of companies' shares and accounting information. The Binomial Test, supplemented by the McNemar test, was used to test the research hypotheses. The main findings of the research were: (i) investors were more likely to choose the company showing gains over the company showing losses; (ii) choices were more frequent for the company whose financial analyst report contained persuasive arguments than for the company without such arguments; (iii) persuasive arguments had a stronger influence than gains and losses when both variables were manipulated together. Therefore, the primary contribution of this work is to highlight that persuasive arguments from a technical authority, in this case the financial analyst, can mitigate the impacts of losses and gains presented in companies' financial reports.
description: International Journal of Business Innovation, Volume 3 Issue 2 (2024)
Zygmund spaces, inviscid limits and uniqueness of Euler flows
Creators: name: Mucha, Piotr B.
name: Rusin, Walter M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 76B03, 76D09, 35Q30

description: The paper improves the classical uniqueness result for the Euler system in the $n$ dimensional case assuming that $\nabla u^E \in L_1(0,T;BMO(Ω))$, only. Moreover the rate of the convergence for the inviscid limit of solutions to the Navier-Stokes equations is obtained, provided the same regularity of the limit Eulerian flow. A key element of the proof is a logarithmic inequality between the Hardy and $L_1$ spaces which is a consequence of the basic properties of the Zygmund space $\LlnL$.
description: 13 pages
Summary of a language lesson
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-090907-09: Summary of the Hupa language lesson in files VP-090907-07a/c (focused on greetings and introducing oneself).
Embedded Knowledge Distillation in Depth-Level Dynamic Neural Network
Creators: name: Zhao, Qi
name: Lyu, Shuchang
name: Zhang, Zhiwei
name: Xu, Ting-Bing
name: Cheng, Guangliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In real applications, different computation-resource devices need different-depth networks (e.g., ResNet-18/34/50) with high-accuracy. Usually, existing methods either design multiple networks and train them independently, or construct depth-level/width-level dynamic neural networks which is hard to prove the accuracy of each sub-net. In this article, we propose an elegant Depth-Level Dynamic Neural Network (DDNN) integrated different-depth sub-nets of similar architectures. To improve the generalization of sub-nets, we design the Embedded-Knowledge-Distillation (EKD) training mechanism for the DDNN to implement knowledge transfer from the teacher (full-net) to multiple students (sub-nets). Specifically, the Kullback-Leibler (KL) divergence is introduced to constrain the posterior class probability consistency between full-net and sub-nets, and self-attention distillation on the same resolution feature of different depth is addressed to drive more abundant feature representations of sub-nets. Thus, we can obtain multiple high-accuracy sub-nets simultaneously in a DDNN via the online knowledge distillation in each training iteration without extra computation cost. Extensive experiments on CIFAR-10/100, and ImageNet datasets demonstrate that sub-nets in DDNN with EKD training achieve better performance than individually training networks while preserving the original performance of full-nets.
description: 4 pages, 3 figures; Accepted by CVPR2021 workshop: Dynamic Neural Networks Meets Computer Vision
From local to nonlocal: higher fidelity simulations of photon emission in intense laser pulses
Creators: name: Blackburn, T. G.
name: MacLeod, A. J.
name: King, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: State-of-the-art numerical simulations of quantum electrodynamical (QED) processes in strong laser fields rely on a semiclassical combination of classical equations of motion and QED rates, which are calculated in the locally constant field approximation. However, the latter approximation is unreliable if the amplitude of the fields, $a_0$, is comparable to unity. Furthermore, it cannot, by definition, capture interference effects that give rise to harmonic structure. Here we present an alternative numerical approach, which resolves these two issues by combining cycle-averaged equations of motion and QED rates calculated in the locally monochromatic approximation. We demonstrate that it significantly improves the accuracy of simulations of photon emission across the full range of photon energies and laser intensities, in plane-wave, chirped and focused background fields.
description: 39 pages, 8 figures; added discussion, to appear in NJP
Discussion of miscellaneous topics
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-090907-08a/c: Discussion in English covering a variety of topics: beliefs about resurrection, the importance of knowing Hupa language, the arrival of the first people in Hoopa Valley, descriptions of dances, and the importance of sobriety at dances.
SINFONI adaptive optics integral field spectroscopy of the Circinus Galaxy
Creators: name: Sanchez, F. Mueller
name: Davies, R. I.
name: Eisenhauer, F.
name: Tacconi, L. J.
name: Genzel, R.
name: Sternberg, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. To investigate the star formation activity and the gas and stellar dynamics on scales of a few parsecs in the nucleus of the Circinus Galaxy. Methods.Using the adaptive optics near infrared integral field spectrometer SINFONI on the VLT, we have obtained observations of the Circinus galaxy on scales of a few parsecs and at a spectral resolution of 70 km s^{-1} FWHM. The physical properties of the nucleus are analyzed by means of line and velocity maps extracted from the SINFONI datacube. Starburst models are constrained using the Br-gamma flux, stellar continuum (as traced via the CO absorption bandheads longward of 2.3um), and radio continuum. Results. The similarity of the morphologies of the H_2 (1-0)S(1) 2.12um and Br-gamma 2.17um lines to the stellar continuum and also their kinematics, suggest a common origin in star formation. Within 8 pc of the AGN we find there has been a recent starburst in the last 100 Myr, which currently accounts for 1.4% of the galaxy's bolometric luminosity. The similarity of the spatial scales over which the stars and gas exist indicates that this star formation is occuring within the torus; and comparison of the gas column density through the torus to the maximum possible optical depth to the stars implies the torus is a clumpy medium. The coronal lines show asymmetric profiles with a spatially compact narrow component and a spatially extended blue wing. These characteristics are consistent with some of the emission arising in clouds gravitationally bound to the AGN, and some outflowing in cloudlets which have been eroded away from the bound clouds.
description: 15 pages, 10 figures, Accepted for publication in A&A
Numerical Linked-Cluster Approach to Quantum Lattice Models
Creators: name: Rigol, Marcos
name: Bryant, Tyler
name: Singh, Rajiv R. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a novel algorithm that allows one to obtain temperature dependent properties of quantum lattice models in the thermodynamic limit from exact diagonalization of small clusters. Our Numerical Linked Cluster (NLC) approach provides a systematic framework to assess finite-size effects and is valid for any quantum lattice model. Unlike high temperature expansions (HTE), which have a finite radius of convergence in inverse temperature, these calculations are accurate at all temperatures provided the range of correlations is finite. We illustrate the power of our approach studying spin models on {\it kagomé}, triangular, and square lattices.
description: 4 pages, 5 figures, published version
Gromov hyperbolic spaces and the sharp isoperimetric constant
Creators: name: Wenger, Stefan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: In this article we exhibit the largest constant in a quadratic isoperimetric inequality which ensures that a geodesic metric space is Gromov hyperbolic. As a particular consequence we obtain that Euclidean space is a borderline case for Gromov hyperbolicity in terms of the isoperimetric function. We prove similar results for the linear filling radius inequality. Our results strengthen and generalize theorems of Gromov, Papasoglu and others.
description: Improved exposition and structure, new introduction, which includes an outline of the proof; partially new proof, not relying on asymptotic cones anymore
Comments on AdS2 solutions of D=11 Supergravity
Creators: name: Kim, Nakwoo
name: Park, Jong-Dae
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the supersymmetric solutions of 11-dimensional supergravity with a factor of $AdS_2$ made of M2-branes. Such solutions can provide gravity duals of superconformal quantum mechanics, or through double Wick rotation, the generic bubbling geometry of M-theory which are 1/16-BPS. We show that, when the internal manifold is compact, it should take the form of a warped U(1)-fibration over an 8-dimensional Kahler space.
description: 11 pages, no figure, JHEP3.cls
Graph Routing between Capsules
Creators: name: Li, Yang
name: Zhao, Wei
name: Cambria, Erik
name: Wang, Suhang
name: Eger, Steffen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Routing methods in capsule networks often learn a hierarchical relationship for capsules in successive layers, but the intra-relation between capsules in the same layer is less studied, while this intra-relation is a key factor for the semantic understanding in text data. Therefore, in this paper, we introduce a new capsule network with graph routing to learn both relationships, where capsules in each layer are treated as the nodes of a graph. We investigate strategies to yield adjacency and degree matrix with three different distances from a layer of capsules, and propose the graph routing mechanism between those capsules. We validate our approach on five text classification datasets, and our findings suggest that the approach combining bottom-up routing and top-down attention performs the best. Such an approach demonstrates generalization capability across datasets. Compared to the state-of-the-art routing methods, the improvements in accuracy in the five datasets we used were 0.82, 0.39, 0.07, 1.01, and 0.02, respectively.
Nucleon resonances in πN scattering up to energies \sqrt(s) < 2.0 GeV
Creators: name: Chen, Guan Yeu
name: Kamalov, S. S.
name: Yang, Shin Nan
name: Drechsel, D.
name: Tiator, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A meson-exchange model for pion-nucleon scattering was previously constructed using a three-dimensional reduction scheme of the Bethe-Salpeter equation for a model Lagrangian involving π, η, N, Δ, ρ, and σfields. We thereby extend our previous work by including the ηN channel and all the πN resonances with masses ~ 2 GeV, up to the F waves. The effects of the ππN channels are taken into account by introducing an effective width in the resonance propagators. The extended model gives an excellent fit to both πN phase shifts and inelasticity parameters in all channels up to the F waves and for energies below 2 GeV. We present a new scheme to extract the properties of overlapping resonances. The predicted values for the resonance masses and widths as well as resonance pole positions and residues are compared to the listing of the Particle Data Group.
description: 24 pages, 6 figures, 4 tables; corrections were made in Eqs. 33, 38 and in caption of Fig.3
Radial Velocity Monitoring of the Young Star Hubble 4: Disentangling Starspot Lifetimes from Orbital Motion
Creators: name: Carvalho, Adolfo
name: Johns-Krull, Christopher M.
name: Prato, L.
name: Anderson, Jay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We studied the weak-lined T Tauri star Hubble 4, a known long-period binary, and its starspot phenomena. We used optical radial velocity (RV) data taken over a span of 14 years (2004-2010, 2017-2019) at the McDonald Observatory 2.7m Harlan J. Smith telescope and single epoch imaging from the HST/WFC3 instrument. The observed and apparent RV variations show contributions, respectively, from the binary motion as well as from a large spot group on one of the stars, presumed to be the primary. Fitting and removing the orbital signal from the RVs, we found the lower bound on the lifetime of a previously identified large spot group on the surface of the star to be at least 5.1 years. A $\sim5$ year lower limit is a long, but not unprecedented, duration for a single spot group. The later epoch data indicate significant spot evolution has occurred, placing an upper bound on the spot group lifetime at 12 years. We find that pre-main sequence evolutionary models for the age of Taurus ($\sim2$ Myr), combined with component mass estimates from the literature, permit us to reproduce the HST relative photometry and the binary-induced contribution to the apparent RV variations. The long-lived star spot we find on Hubble 4 has significant implications for dynamo models in young stars, as it adds evidence for long lifetimes of magnetic field topologies. There are also significant implications for young star exoplanet searches as long-lived coherent RV signals may be spot-induced and not the result of planetary motion. (This paper includes data taken at The McDonald Observatory of The University of Texas at Austin.)
description: 45 pages, 16 figures, 4 tables, to be published in the Astrophysical Journal (ApJ)
Chemical Gradients in Galaxy Clusters and the Multiple Ways of Making a Cold Front
Creators: name: Dupke, Renato A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cold fronts were originally interpreted as being the result of subsonic/transonic motions of head-on merging substructures. This merger core remnant model is theoretically justified and hold relatively well for clusters that have clear signs of merging, such as 1E0657-56, but they do not work well for the increasing number of cold fronts found in clusters that do not show clear merging signs, such as A496. Here we report the results of a deeper observation of that cluster that allowed us to produce high quality maps of the gas parameters and to compare more closely the observations with the predictions given by different models for cold front formation. We found for the first time a ``cold arm'' characteristic of a flyby of a massive DM halo near the core of the cluster. The cold arm is accompanied by an enhanced SN II Fe mass fraction, inconsistent with the merger core remnant scenario.
description: 3 pages, 1 figures, to appear in the Proceedings of "Heating vs. Cooling in Galaxies and Clusters of Galaxies", August 2006, Garching (Germany)
O PROFESSOR E O SENSO DE PERTENCIMENTO
Creators: name: Oliveira, Marillaine Cristinne Aleixo
name: Darius, Rebeca Pizza Pancotte
Publisher: name: Internet Latent Corpus Journal
Year: 2024

description: A identidade profissional se constrói no contexto do exercício da profissão, contexto esse imbuído da cultura do grupo ao qual pertence. Assim, o sentimento de pertencimento de um funcionário à instituição implica, entre outros aspectos, no quanto os valores que a instituição tem são incorporados por ele e lhe atribuem sentido e significado ao trabalho que desenvolve. O objetivo desta pesquisa é analisar, na literatura publicada dos últimos 5 anos, como o senso de pertencimento do professor à instituição está relacionado com o entendimento da filosofia institucional. A coleta dos dados foi feita nas bases científicas por meio de descritores definidos pelas pesquisadoras, seguindo a metodologia PRISMA.  Os resultados indicam que o sentimento de pertencimento dos professores é influenciado por uma variedade de elementos, incluindo o ambiente social da escola em que atuam, o engajamento no trabalho, os relacionamentos interpessoais e o apoio administrativo. Há impactos positivos no bem-estar e na eficácia dos professores, bem como na qualidade da vida educacional dos alunos. Conclui-se, então, que o vínculo sentimental do professor com a instituição em que trabalha está associado à incorporação dos valores da escola e ao significado que estes conferem ao seu trabalho. Esse sentimento é influenciado por vários elementos, que, em conjunto, resultam em um forte senso de pertencimento, melhorando o bem-estar e a eficácia do professor e elevando a qualidade da educação oferecida a todos os alunos.
description: Internet Latent Corpus Journal, vol. 15 n.º 1 (2025): .
Insights of electronic structures, mechanical properties and thermal conductivities of TM5SiB2 (TM=V, Nb, and Ta) MAB phases
Creators: name: Li, Bo
name: Duan, Yonghua
name: Shen, Li
name: Peng, Mingjun
name: Qi, Huarong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Information Systems not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: The electronic, elastic, and thermal properties of TM5SiB2 (TM = V, Nb, and Ta) MAB phases are calculated herein using first-principles calculations. The obtained electronic structures show that there are p-d hybridizations between B, Si, and TM atoms, and TM-B and TM-Si bonds are formed by the electrons transfer between TM and B, TM and Si. Elastic Modulus and elastic Anisotropy Index, three-dimensional surface construction, and two-dimensional projection are used to discuss the elastic anisotropy, and the results show that these TM5SiB2 MAB phases are anisotropic in elastic modulus with the order of V5SiB2 > Nb5SiB2 > Ta5SiB2. Besides, the Debye temperature and sound velocity of these TM5SiB2 are also analyzed. The thermal conductivities are obtained, and the thermal conductivity is also anisotropic and in the same order as elastic modulus.