cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ruling out a massive-assymptoic giant-branch star as the progenitor of supernova 2005cs
Creators: name: Eldridge, J. J.
name: Mattila, S.
name: Smartt, S. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the predicted UBVRIJHK absolute magnitudes for models of supernova progenitors and apply the result to the case of supernova 2005cs. We agree with previous results that the initial mass of the star was of low, around 6 to 8 M(sun). However such stars are thought to go through second dredge-up to become AGB stars. We show that had this occurred to the progenitor of 2005cs it would have been observed in JHK pre-explosion images. The progenitor was not detected in these bands and therefore we conclude that it was not an AGB star. Furthermore if some AGB stars do produce supernovae they will have a clear signature in pre-explosion near-infrared images. Electron-capture supernovae are thought to occur in AGB stars, hence the implication is that 2005cs was not an electron-capture supernova but was the collapse of an iron core.
description: 5 pages, 3 figures, Letter accepted for publication in MNRAS
Generating Forms for Exact Volume-Preserving Maps
Creators: name: Lomelí, H. E.
name: Meiss, J. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the group of volume-preserving diffeomorphisms on a manifold. We develop a general theory of implicit generating forms. Our results generalize the classical formulas for generating functions of symplectic twist maps.
description: laTeX, 20 pages, 1 figure
Οικονομοτεχνική ανάλυση κατασκευαστικής διαμόρφωσης για την εξυπηρέτηση πλοίων μεγάλου βυθίσματος στον Ο.Λ.Θ.
Creators: name: Χατζηβασιλειάδης, Πέτρος Σάββα
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Κατασκευαστικές Μέθοδοι Εκβάθυνσης
Μεταλλική Πασσαλοσανίδα
Τεχνητά κυψελωτά κιβώτια
Dredging construction methods
Sheet pile
Caissons

description: Ο λιμένας της Θεσσαλονίκης είναι ο δεύτερος μεγαλύτερος της χώρας και ανήκει στην κατηγορία των διεθνών, καθώς επίσης είναι ένας από τους πέντε ελληνικούς λιμένες που ανήκει στο Κεντρικό Δίκτυο των Διευρωπαϊκών Δικτύων Μεταφοράς. Στην προσπάθεια της διαρκούς βελτίωσης και ταυτόχρονα στην διατήρηση της σπουδαιότητας αυτής του λιμένα της Θεσσαλονίκης πραγματοποιήθηκε η συγκεκριμένη διπλωματική εργασία. Στόχος της είναι η διατήρηση και η αύξηση της εμπορικότητας του λιμένα με την εξυπηρέτηση πλοίων με μεγαλύτερο διαστάσεις από τα ήδη εξυπηρετούμενα. Για να πραγματοποιηθεί κάτι τέτοιο, η 6η προβλήτα του λιμένα, ο οποίος είναι αυτός που υποδέχεται τα μεγάλα εμπορικά πλοία, και συγκεκριμένα το κρηπίδωμα 26 με το Σταθμό Εμπορευματοκιβωτίων, θα πρέπει να εκβαθυνθεί από 12 μέτρα στα 16 μέτρα. Έτσι, προτείνονται και αξιολογούνται δύο πιθανές λύσεις για την εκβάθυνση της εν λόγω προβλήτας: Μεταλλική Πασσαλοσανίδα: Αντιστήριξη των τεχνητών ογκολίθων με πασσαλοσανίδα βυθισμένη σε υπολογιζόμενο βάθος κάτω από τον πυθμένα και κατόπιν εκσκαφή στα 16 μέτρα. Caissons: Επέκταση της 6ης προβλήτας ορισμένων μέτρων, κατά πλάτος, με τεχνητούς κυψελωτούς ογκόλιθους (caisson) και έπειτα εκσκαφή του λιμένα. Τέλος, γίνεται σύγκριση μεταξύ των δύο προτεινόμενων μεθόδων και προτείνεται μία πιθανή επιλογή για την εκβάθυνση του προβλήτα.
description: The port of Thessaloniki is the second biggest port of Greece and it’s characterized as an international port, as well it’s one of the five Greek ports which belong to the Central Trans-European Transport Network. This project is an honest effort of achieving continuous improvement and maintaining the significance of the port of Thessaloniki. The main target is the maintenance and the increase of the port’s commercialism through the ability to serve ships with larger dimensions than those which are already being served. In order to accomplish this achievement, the sixth jetty of the port which serves the big container ships must be dredged from 12 m to 16 m. Thus, this project suggests and evaluates two possible solutions for the dredging of the sixth jetty: Sheet pile: Shoring of the artificial boulder with a sheet pile which is submerged to the calculated depth under the bottom and subsequently excavation up to 16 m. Caisson: Extension of the sixth jetty to certain meters in width with the use of caissons and then excavation of the port. Finally, the two proposed methods are compared and a possible choice for the dredging of the jetty is suggested.
Strong MgII systems in quasar and gamma-ray burst spectra
Creators: name: Porciani, Cristiano
name: Viel, Matteo
name: Lilly, Simon J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The incidence of strong MgII systems in gamma-ray burst (GRB) spectra is a few times higher than in quasar (QSO) spectra. We investigate several possible explanations for this effect, including: dust obscuration bias, clustering of the absorbers, different beam sizes of the sources, multiband magnification bias of GRBs, association of the absorbers with the GRB event or the circumburst environment. We find that: i) the incidence rate of MgII systems in QSO spectra could be underestimated by a factor 1.3-2 due to dust obscuration; ii) the equivalent-width distribution of the MgII absorbers along GRBs is consistent with that observed along QSOs thus suggesting that the absorbers are more extended than the beam sizes of the sources; iii) on average, GRB afterglows showing more than one MgII system are a factor of 1.7 brighter than the others, suggesting a lensing origin of the observed discrepancy; iv) gravitational lensing (in different forms, from galaxy lensing to microlensing) can bias high the counts of MgII systems along GRBs if the luminosity functions of the prompt gamma-ray emission and of the optical afterglows have a mean faint-end slope approaching -5/3 -- -2; v) some of the absorbers can be associated with the circumburst environment or produced by supernova remnants unrelated to the GRB event itself but lying in the same star-forming region. With the possible exception of magnification bias, it is unlikely that one of these effects on its own can fully account for the observed counts. However, the combined action of some of them can substantially reduce the statistical significance of the discrepancy.
description: 8 pages, 3 figures, ApJ in press, comments welcome
Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way
Creators: name: Irwin, M. J.
name: Belokurov, V.
name: Evans, N. W.
name: Ryan-Weber, E. V.
name: de Jong, J. T. A.
name: Koposov, S.
name: Zucker, D. B.
name: Hodgkin, S. T.
name: Gilmore, G.
name: Prema, P.
name: Hebb, L.
name: Begum, A.
name: Fellhauer, M.
name: Hewett, P. C.
name: Kennicutt,, R. C.
name: Wilkinson, M. I.
name: Bramich, D. M.
name: Vidrih, S.
name: Rix, H. -W.
name: Beers, T. C.
name: Barentine, J. C.
name: Brewington, H.
name: Harvanek, M.
name: Krzesinski, J.
name: Long, D.
name: Nitta, A.
name: Snedden, S. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this Letter, we announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude diagram of Leo T shows two well-defined features, which we interpret as a red giant branch and a sequence of young, massive stars. As judged from fits to the color-magnitude diagram, it lies at a distance of about 420 kpc and has an intermediate-age stellar population with a metallicity of [Fe/H]= -1.6, together with a young population of blue stars of age of 200 Myr. There is a compact cloud of neutral hydrogen with mass roughly 10^5 solar masses and radial velocity 35 km/s coincident with the object visible in the HIPASS channel maps. Leo T is the smallest, lowest luminosity galaxy found to date with recent star-formation. It appears to be a transition object similar to, but much lower luminosity than, the Phoenix dwarf.
description: Ap J (Letters) in press, the subject of an SDSS press release today
Coherent Transport Through a Quadruple Point in a Few Electron Triple Dot
Creators: name: Gaudreau, L.
name: Sachrajda, A. S.
name: Studenikin, S.
name: Zawadzki, P.
name: Kam, A.
name: Lapointe, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A few electron double electrostatic lateral quantum dot can be transformed into a few electron triple quantum dot by applying a different combination of gate voltages. Quadruple points have been achieved at which all three dots are simultaneously on resonance. At these special points in the stability diagram four occupation configurations are possible. Both charge detection and transport experiments have been performed on this device. In this short paper we present data and confirm that transport is coherent by observing a Pi phase shift in magneto-conductance oscillations as one passes through the quadruple point.
description: To be published in ICPS Conf. Proceedings 2006
Dust Attenuation Curves at z $\sim$ 0.8 from LEGA-C: Precise Constraints on the Slope and 2175$Å$ Bump Strength
Creators: name: Barisic, Ivana
name: Pacifici, Camila
name: van der Wel, Arjen
name: Straatman, Caroline
name: Bell, Eric F.
name: Bezanson, Rachel
name: Brammer, Gabriel
name: D'Eugenio, Francesco
name: Franx, Marijn
name: van Houdt, Josha
name: Maseda, Michael V.
name: Muzzin, Adam
name: Sobral, David
name: Wu, Po-Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a novel approach to measure the attenuation curves of 485 individual star-forming galaxies with M$_*$ $>$ 10$^{10}$ M$_{\odot}$ based on deep optical spectra from the VLT/VIMOS LEGA-C survey and multi-band photometry in the COSMOS field. Most importantly, we find that the attenuation curves in the rest-frame $3000-4500$A range are typically almost twice as steep as the Milky Way, LMC, SMC, and Calzetti attenuation curves, which is in agreement with recent studies of the integrated light of present-day galaxies. The attenuation at $4500$A and the slope strongly correlate with the galaxy inclination: face-on galaxies show less attenuation and steeper curves compared to edge-on galaxies, suggesting that geometric effects dominate observed variations in attenuation. Our new method produces $2175$A UV bump detections for 260 individual galaxies. Even though obvious correlations between UV bump strength and global galaxy properties are absent, strong UV bumps are most often seen in face-on, lower-mass galaxies (10 $
description: 15 pages, 10 figures, 1 table. Accepted for publication in The Astrophysical Journal
Study3 - Noticing of familiar or unfamiliar company logos by Spanish and South African participants
Creators: name: Ding, Yifan
name: Simons, Daniel J.
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Cognition and Perception
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Preregistration of the second logo study (study 3 of the familiarity series). As for the first logo study, this study uses corporate logos that would be familiar in one country and not the other. The countries/logos were from Spain and South Africa. In all other respects, this study was identical to the first logo study. The preregistration documentation is in the pdf file under Files.
Scaling and Suppression of Anomalous Quantum Decoherence in Ion Traps
Creators: name: Deslauriers, L.
name: Olmschenk, S.
name: Stick, D.
name: Hensinger, W. K.
name: Sterk, J.
name: Monroe, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We measure and characterize anomalous motional decoherence of an atomic ion confined in the lowest quantum levels of a novel rf ion trap that features moveable electrodes. The scaling of decoherence rate with electrode proximity is measured, and when the electrodes are cooled from 300 K to 150 K, the decoherence rate is suppressed by an order of magnitude. This provides direct evidence that anomalous motional decoherence of trapped ions stems from microscopic noisy potentials on the electrodes. These observations are relevant to quantum information processing schemes using trapped ions or other charge-based systems.
description: 4 pages, 4 figures
title: The Effectiveness of Motivational Interviewing on Intimate Partner Violence Clients
Creators: name: Drake, Chelsea
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2014

description: The criminal justice response to perpetrators of intimate partner violence (IPV) is often a rehabilitative group treatment called Batterers Intervention Programs (Bl). This thesis assesses the effects of motivational interviewing (Ml) on clients ordered to local probation for IPV. Records were collected on IPV offenders enrolled in BI, within a small city in the Southeast Criminal Justice Agency. The pre-MI data were gathered from 2006, and post-MI data from 2007-2008 after the implementation of Ml. This thesis focuses on the use of MI as an intervention to enhance clients' motivation to change. This research is guided by questions that involve IPV perpetrators and MI to assess: 1) Are clients who receive motivational interviewing from their probation officers more likely to complete the Batterers Intervention treatment programs than those who do not receive motivational interviewing? 2) Does Motivational Interviewing reduce the occurrence of recidivism, especially violent recidivism, compared to the standard probation? Binary logistic regressions are used to explore the relationships between motivational interviewing, BI program completion and recidivism. Model 1 examined the effect of MI on the successful completion of BI; MI was not found to be a significant predictor of the outcome of Bl. Model 2 attempted to determine if MI reduces the occurrence of recidivism in the eight months following the completion of the court ordered Batterers Intervention program. In this model, MI was found to be a statistically significant predictor of recidivism, and explained 11 % of the variance. Model 3 tested the effect of MI on the odds of being arrested for a violent charge eight months following Bl. This model was also statistically significant and explained 8.9% of the variance in violent recidivism among those who received Ml.
Ανάπτυξη Διαδικτυακής Εφαρμογής για τη Χαρτογράφηση των Δημογραφικών Δεδομένων της Ελλάδας
Creators: name: Τασιόπουλος, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Διαδικτυακή Εφαρμογή
Χαρτογράφηση
Δημογραφικά Δεδομένα
Web-Based Application
Mapping
Demographic Data

description: Στόχος της παρούσας μεταπτυχιακής εργασίας αποτέλεσε η ανάπτυξη μιας διαδικτυακής εφαρμογής με τη χρήση των ΕΛ/ΛΑΚ, μέσα από την οποία θα δίνεται η δυνατότητα χαρτογράφησης των δημογραφικών δεδομένων της Ελλάδας. Ειδικότερα, ο χρήστης θα μπορεί να επιλέγει τα δεδομένα (layer) για τα οποία ενδιαφέρεται, να παρεμβαίνει στο style αυτών και σε τελικό στάδιο να δημιουργεί ένα δημογραφικό χάρτη τον οποίο και θα μπορεί να τον αποθηκεύσει – εκτυπώσει. Αρχικά, περιγράφεται η γενικότερη αρχιτεκτονική της εν λόγω εφαρμογής. Στη συνέχεια ακολουθεί αναλυτική παρουσίαση του τρόπου λειτουργίας της, περιγράφοντας τη διαδικασία εγγραφής-σύνδεσης του χρήστη στην εφαρμογή, καθώς και τα 3 βασικά πάνελ του interface της (Map view panel-basic toolbars, Info and Tools, Legend and Style Manager). Σε τελικό στάδιο, παρουσιάζονται τα γενικότερα συμπεράσματα που προκύπτουν μέσα από την εφαρμογή, ενώ παρατίθενται και οι δυνατότητες που προκύπτουν για μελλοντική αναβάθμιση της.
description: The main objective of this postgraduate thesis is the development of a web-based application for the Mapping of the Demographic Data of Greece using the OSS/FS. In particular, the user will be able to select the layers he is interested in, edit their style, and finally create a demographic map which he can print - save. In this thesis, initially the overall architecture of this application is described. Then is made an analytical presentation of how it works, describing the sign in – sign up process and the 3 basic panels of application’s interface (Map view panel-basic toolbars, Info and Tools, Legend and Style Manager). Finally, the general conclusions arising from the application are presented, while listed the opportunities for future upgrade.
Re-thinking "The Way We Think" – Metaphor, Metonymy & Blending in Usage-based Linguistics
Creators: name: Stadelmann, Vera
Publisher: name: KULT_online
Year: 2011

description: Conceptual Metaphor Theory and Conceptual Integration Theory, two highly influential cognitive semantic theories of meaning making, have over the past years come under considerable attack from usage-based and functional branches of linguistics. This varied volume sets out to explore the expository potential of both theories within a usage-based framework and, in most contributions, offers empirically solid applications as well as suggestions for theoretical reconfigurations.
description: KULT_online, Nr. 28 (2011): KULT_online 28 (2011)
Τρισδιάστατη απεικόνιση των Νεώτερων μνημείων της Θεσσαλονίκης: Πειραματική εφαρμογή με την χρήση του λογισμικού CityEngine
Creators: name: Κόνιαρος, Ανδρέας Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Νεοχαρτογραφία
Πρότυπο Διαδραστικό Διαδικτυακό Τρισδιάστατο Μοντέλο Πόλης
Νεώτερα Μνημεία Θεσσαλονίκης
Neocartography
Interactive 3D Web City Model
Modern Monuments of Thessaloniki

description: Αντικείμενο της παρούσας εργασίας αποτελεί η θεματική απεικόνιση, σε ένα διαδραστικό διαδικτυακό τρισδιάστατο μοντέλο, των νεότερων μνημείων του πολεοδομικού συγκροτήματος της Θεσσαλονίκης μέσω της κατασκευής ενός απλοποιημένου παραδείγματος με τη χρήση της εφαρμογής CityEngine της οποίας αναλύονται οι κυριότερες σχετικές λειτουργίες. Η καταγραφή πληροφοριών για τα υπό μελέτη ιστορικά μνημεία, σε μία βάση δεδομένων πρόκειται να προσφέρει σημαντικά πλεονεκτήματα σε θέματα οργάνωσης – ταξινόμησης και να δώσει τη δυνατότητα για τη μετέπειτα χαρτογραφική απεικόνισή τους με τη βοήθεια του Διαδικτύου και της Τεχνολογίας.Αφού παρατέθηκαν οι σύγχρονες τάσεις της Χαρτογραφίας, έγινε η καταγραφή των Νεώτερων Μνημείων της Θεσσαλονίκης σε ενιαία βάση δεδομένων στην οποία, εκτός της γεωγραφικής θέσης τους, παρατίθενται πληροφορίες ποικίλλου περιεχομένου όπως φωτογραφίες, ιστορικά στοιχεία θεσμοθέτησης τους κ.α.. Στην συνέχεια δημιουργήθηκε η χαρτογραφική βάση των Νεώτερων Μνημείων, συνδυάζοντας την βάση δεδομένων και χαρτογραφικά δεδομένα από διάφορες πηγές ώστε να επιτευχθεί ακρίβεια και συμβατότητα. Ακολούθησε η μελέτη και περιγραφή των βασικών ενεργειών-εντολών του λογισμικού και παρατέθηκε απλοποιημένη εφαρμογή τους για την δημιουργία πρότυπο διαδραστικό διαδικτυακό τρισδιάστατο μοντέλο της πόλης με έμφαση στα Νεώτερα Μνημεία.
description: The subject of this thesis is the thematic display in an interactive three dimensional web model of the newer monuments of Thessaloniki through the creation of a simplified example with the usage of the application CityEngine, of which the main functions are analyzed.Specifically, the concentrated information, of the under study historical sites, in a single database is going to offer significant advantages concerning organizational and classification issues, and allow with the help of the Internet and the Technology for subsequent mapping.Having cited the modern trends of Cartography, a single database was created, that contains a record of the Modern Monuments of Thessaloniki and also contains, except for the location of the monuments, information of variable content, such as photographs, historical institutionalization data, etc.. Moreover, a cartographic basis of the Modern Monuments was created, combining the data base and map data from various sources in order to achieveaccuracyandcompatibility.Finally, as part of this thesis, there was a study and a description of the basic actions/ commands of the software and a simplified application was cited for the creation of the interactive webthree-dimensional modelof the city withan emphasis on the ModernMonuments.
Ανάπτυξη μεθοδολογίας ενίσχυσης στρεπτικώς ευαίσθητων κτιρίων με χρήση εξελικτικών αλγορίθμων
Creators: name: Ευσταθάκης, Νικόλαος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ενίσχυση
Μανδύες οπλισμένου σκυροδέματος
Στρεπτική ευαισθησία
Retrofitting
Reinforced concrete jackets
Torsional sensitivit

description: Στο παρόν κείμενο παρουσιάζεται μία νέα μέθοδος ενίσχυσης στρεπτικώς ευαίσθητων υφιστάμενων κτιρίων. Ο στόχος αυτής της μεθόδου είναι η εξάλειψη της στρεπτικής συνιστώσας από την πρώτη και δεύτερη ιδιομορφή της κατασκευής, ανακατανέμοντας τη δυσκαμψία της μέσω της ενίσχυσης των κατακόρυφων στοιχείων του φέροντα οργανισμού. Λόγω του πολύπλοκου και πολύ-παραμετρικού χαρακτήρα του προβλήματος, μεταξύ των υπολοίπων λογισμικών χρησιμοποιήθηκαν και αλγόριθμοι βελτιστοποίησης με στόχο αρχικά την ποσοτικοποίηση της αναγκαίας αύξησης της δυσκαμψίας του κάθε στοιχείου, στη συνέχεια τη διαστασιολόγηση των απαραίτητων μανδυών Οπλισμένου Σκυροδέματος ενώ τέλος το σχεδιασμό και την ανάλυση των μανδυομένων διατομών που απαιτούνται για την ενίσχυση του κτιρίου. Η αποδοτικότητα της μεθόδου ελέγχθηκε σε ιδεατές αλλά και πραγματικές κατασκευές με στρεπτική ευαισθησία.
description: A new methodology is presented for the Retrofitting of existing Torsionally Sensitive Buildings. The scope of this method is to eliminate the torsional component from the first and second mode of the structure by changing its stiffness distribution and parallelly strengthen its vertical elements. Due to the complex and multi-parameter nature of this problem, state-of-art optimization algorithms, among other software applications, were used so as to firstly quantify the necessary increasing of stiffness, secondly calculate the dimensions of the concrete jackets and finally design and analyze the essential composite sections for the rehabilitation of the building. The performance of the methodology is demonstrated through benchmark and existing buildings with torsional sensitivity.
BTZ entropy from topological M-theory
Creators: name: Chagoya, Javier
name: Reyes-Ahumada, Graciela
name: Sabido, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By determining the relation between topological M-theory and the Chern-Simons actions for a gauge field constructed from the Lie algebra of either SL(2,R)x SL(2,R) or SL(2,C)x SL(2,C), depending on the sign of the space-time curvature, we show that the standard and exotic actions of 3-dimensional gravity can be recovered from topological M-theory. With this result, we provide a concrete realisation of a conjecture by Dijkgraaf et al. stating that the partition function of topological M-theory is equivalent to the partition function of a black hole in a related theory. We do this for the standard and exotic BTZ black holes in 3-dimensional gravity.
description: 7 pages
Austenite grain growth kinetics and the grain size distribution
Creators: name: Giumelli, Alan
Publisher: name: University of British Columbia
Year: 2009

description: The aims of this work are to assess the kinetics of austenite grain growth, and to estimate the three dimensional grain size distribution. Measurements are to be used for the validation of a statistical model for the estimation of the kinetics of austenite grain growth during hot strip rolling. A series of tests are performed with two industrial plain carbon steels in the temperature range from 950°C to 1150°C. Grain size is measured by standard manual procedures and by the use of image analysis equipment. Systematic errors in the measurements are identified. A correction is proposed to account for the systematic error in the measurement of the two dimensional grain size distribution by the use of image analysis. The kinetics of austenite grain growth are discussed and the influence of second phase particles is observed. Results are described well by a statistical model for grain growth. A number of methods for the estimation of the three dimensional grain size distribution are compared. It is concluded that the method proposed by Matsuura and Itoh is the most suitable.
The impact of MSIs and women-focused colleges on persistence in economics: Pre-analysis plan
Creators: name: Krafft, Caroline
Publisher: name: OSF Registries
Year: 2022
Subjects: subject: Economics
subject: Social and Behavioral Sciences

description: This project aims to investigate the impact of institutional setting on racial/ethnic minority students and women in economics. The underrepresentation of minority students and women in economics exceeds that of STEM fields (CSMGEP 2019) and, while STEM fields have improved representation over time, economics has not. Past research has established that under-represented minority and women students have significantly lower relevance, belonging, and growth mindset (RBG) in predominantly white institutions (PWIs) and co-ed settings (Bayer, Bhanot, et al. 2020). Lower RBG is linked to worse grades and lower persistence in economics majors. There has been no research to date on RBG at minority serving institutions (MSIs) or women’s colleges nor on whether these identity-affirming institutions may foster RBG and persistence.
This project will increase our understanding of the role RBG plays as a potential barrier or lever for change across different institutional settings. We will undertake longitudinal surveys of students and faculty (at 18 universities, stratified by type) to understand if RBG develops differently in economics classes at MSIs and women’s colleges. Collecting data on RBG and persistence from approximately 1,800 students at different points in time (a year apart) will facilitate distinguishing selection into institutions from the impact of experiences in those institutions.
Synthesis, structure and magnetic properties of honeycomb-layered Li3Co2SbO6 with new data on its sodium precursor, Na3Co2SbO6
Creators: name: Stratan, M. I.
name: Shukaev, I. L.
name: Vasilchikova, T. M.
name: Vasiliev, A. N.
name: Korshunov, A. N.
name: Kurbakov, A. I.
name: Nalbandyan, V. B.
name: Zvereva, E. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Li3Co2SbO6 is prepared by molten salt ion exchange and its structure refined by the Rietveld method confirming the honeycomb-type Co/Sb ordering of its Na precursor. Monoclinic rather than trigonal symmetry of Na3Co2SbO6 is directly demonstrated for the first time by peak splitting in the high-resolution synchrotron XRD pattern. The long-range antiferromagnetic order is established at TN about 6.7 K and 9.9 K in Na3Co2SbO6 and Li3Co2SbO6, respectively, confirmed by both the magnetic susceptibility and specific heat. Spin-wave analysis of specific heat data indicates the presence of 3D AFM magnons in Na3Co2SbO6 and 2D AFM magnons in Li3Co2SbO6. The field dependence of the magnetization almost reaches saturation in moderate magnetic fields up to 9 T and demonstrates characteristic features of magnetic field induced spin-reorientation transitions for both A3Co2SbO6 (A = Na, Li). Overall thermodynamic studies show that the magnetic properties of both compounds are very sensitive to an external magnetic field, thus predicting a non-trivial ground state with a rich magnetic phase diagram. The ground state spin configuration of Li3Co2SbO6 has been determined by low-temperature neutron powder diffraction. It represents a ferromagnetic arrangement of moments in the honeycomb layers with antiferromagnetic coupling between adjacent layers.
Experimental study of pedestrian counterflow in a corridor
Creators: name: Kretz, Tobias
name: Grünebohm, Anna
name: Kaufman, Maike
name: Mazur, Florian
name: Schreckenberg, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this work the results of a pedestrian counterflow experiment in a corridor of a width of 2 meter are presented. 67 participants were divided into two groups with varying relative and absolute size and walked in opposite direction through a corridor. The video footage taken from the experiment was evaluated for passing times, walking speeds, fluxes and lane-formation including symmetry breaking. The results include comparatively large fluxes and speeds as well as a maximal asymmetry between left- and right-hand traffic. The sum of flow and counterflow in any case turns out to be larger than the flow in all situations without counterflow.
description: accepted for publication in "Journal of Statistical Mechanics: theory and experiment" (JSTAT)
Τ(ρ)όποι γραφής: Αναδυόμενος Πολυγλωσσικός Γραμματισμός
Creators: name: Μανιάτη, Αναστασία Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Αναδυόμενος Γραμματισμός
Πολυγλωσσία
Συστήματα γραφής
Emergent literacy
Multilingualism
Writing systems

description: Our world counts over 7 100 languages which are noted in about 3 570 different writing systems. How does a child conceive this graphical plurality and in which ways does it interpret those symbols? The aim of this master thesis is to explore and evaluate young children’s attitudes and behavior towards the different writing systems and to examine the process of emergent literacy combined with multilingualism. Furthermore, given that early childhood literature endorses the creativity and imagination of children, we tried to engage students in creating their own identity texts all by painting and designing those writing symbols. Meaningly, we focus on highlighting young children’s “wor(l)ds of writing”.
description: Ο κόσμος μας μετρά πάνω από 7 100 γλώσσες οι οποίες αναπαριστώνται σε περίπου 3 570 διαφορετικά συστήματα γραφής. Πώς όμως ένα παιδί αντιλαμβάνεται αυτόν τον γραφικό πλουραλισμό και πώς μεταφράζει αυτά τα σύμβολα; Στόχος της παρούσας διπλωματικής εργασίας είναι να μελετήσει και να αξιολογήσει τις στάσεις και τις γραφικές συμπεριφορές των παιδιών προσχολικής ηλικίας αναφορικά με τα διάφορα συστήματα γραφής, καθώς και να μελετήσει τη σχέση μεταξύ αναδυόμενου γραμματισμού με την πολυγλωσσία. Επιπλέον, δεδομένου ότι η βιβλιογραφία επιστημών της προσχολικής αγωγής υπερθεματιίζει την δημιιουργικότητα και την φαντασία των παιδιών, ενθαρρύναμε τα παιδιά να παράξουν τα δικά τους ταυτοτικά κείμενα σχεδιάζοντας και ζωγραφίζοντας τα γράμματα διαφορετικών συστημάτων γραφής. Με άλλα λόγια, προσπαθήσαμε να αναδείξουμε τους «Τ(ρ)όπους γραφής» παιδιών προσχολικής ηλικίας.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Maine France, Γαλλία)
One dimensional nearest neighbor exclusion processes in inhomogeneous and random environments
Creators: name: Chayes, Lincoln
name: Liggett, Thomas M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35

description: The processes described in the title always have reversible stationary distributions. In this paper, we give sufficient conditions for the existence of, and for the nonexistence of, nonreversible stationary distributions. In the case of an i.i.d. environment, these combine to give a necessary and sufficient condition for the existence of nonreversible stationary distributions.
Non-Markovian Momentum Computing: Universal and Efficient
Creators: name: Ray, Kyle J.
name: Wimsatt, Gregory W.
name: Boyd, Alexander B.
name: Crutchfield, James P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Emerging Technologies (cs.ET)
subject: Dynamical Systems (math.DS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: All computation is physically embedded. Reflecting this, a growing body of results embraces rate equations as the underlying mechanics of thermodynamic computation and biological information processing. Strictly applying the implied continuous-time Markov chains, however, excludes a universe of natural computing. We show that expanding the toolset to continuous-time hidden Markov chains substantially removes the constraints. The general point is made concrete by our analyzing two eminently-useful computations that are impossible to describe with a set of rate equations over the memory states. We design and analyze a thermodynamically-costless bit flip, providing a first counterexample to rate-equation modeling. We generalize this to a costless Fredkin gate---a key operation in reversible computing that is computation universal. Going beyond rate-equation dynamics is not only possible, but necessary if stochastic thermodynamics is to become part of the paradigm for physical information processing.
description: 6 pages, 3 figures; Supplementary Material, 1 page; http://csc.ucdavis.edu/~cmg/compmech/pubs/cbdb.htm
Quantum Fields on the Groenewold-Moyal Plane
Creators: name: Akofor, Earnest
name: Balachandran, A. P.
name: Joseph, Anosh
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give an introductory review of quantum physics on the noncommutative spacetime called the Groenewold-Moyal plane. Basic ideas like star products, twisted statistics, second quantized fields and discrete symmetries are discussed. We also outline some of the recent developments in these fields and mention where one can search for experimental signals.
description: 50 pages, 3 figures. v2: published version
Diffusion of radial action in a galactic disc
Creators: name: Wozniak, Herve
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Context. Stellar migration of the galactic disc stars has been invoked to explain the dispersion of stellar metallicity observed in the solar neighborhood. Aims. We seek to identify the dynamical mechanisms underlying stellar migration in an isolated galaxy disc under the influence of a bar. Our approach is to analyze the diffusion of dynamical quantities. Methods. We extend our previous work by exploring Chirikov's diffusion rate (and derived timescale) of the radial action $J_\mathrm{R}$ in an idealised N$-$body simulation of an isolated disc galaxy. We limit our study to the evolution of the disc region well after the formation of the bar, in a regime of adiabatic evolution. Results. The $J_\mathrm{R}$ diffusion timescales $T_\mathrm{D}(J_\mathrm{R})$ is less than 3 Gyr for roughly half the galaxy mass. It is always much shorter than the angular momentum diffusion timescale $T_\mathrm{D}(L_\mathrm{z})$ outside the stellar bar. In the disc, $\langle T_\mathrm{D}(J_\mathrm{R}) \rangle \sim 1$ Gyr. All non-axisymmetric morphological structures characteristic of resonances and waves in the disc are associated to particles with $T_\mathrm{D}(J_\mathrm{R}) < 3$ Gyr and $T_\mathrm{D}(L_\mathrm{z}) > 10$ Gyr. Short $T_\mathrm{D}(J_\mathrm{R})$ can be explained by the gradual decircularisation of initially circular orbits ($J_\mathrm{R}=0$) under the effect of intermittent ILR scattering by wave trains propagating in the disc, well beyond the bar OLR. This leads to a moderate secular heating of the disc beyond the bar OLR for 7 Gyr, comparable to solar neighbourhood observations. The complex multi-wave structure, mixing permanent and intermittent modes, allows for multiple resonance overlaps.
description: 10 pages, 9 figures, accepted for A&A
Uncovering the Genomic Structure of Personality
Creators: name: Sullivan, Margaret L. Clapp
name: Mõttus, René
name: Vainik, Uku
name: Tucker-Drob, Elliot
name: Schwaba, Ted
name: Nivard, Michel Guillaume
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Genomics
subject: Psychiatry and Psychology
subject: Personality and Social Contexts
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Genetics and Genomics

description: We capitalize on new genome-wide data and novel multivariate genetic analytic methods to study the multivariate genetic architecture of personality traits, from narrow item-level nuances to broad trait domains, among a sample of 77,400 Estonians with self- and (partially) other-reported data on a comprehensive set of 198 reliable personality items.
Structure of poly(propyl ether imine) (PETIM) dendrimer from fully atomistic molecular Dynamics Simulation and by Small Angle X-ray scattering
Creators: name: Jana, Chandan
name: Jayamurugan, G.
name: Ganapathy, R.
name: Maiti, Prabal K.
name: Jayaraman, N.
name: Sood, A. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the structure of carboxylic acid terminated neutral poly (propyl ether imine) (PETIM) dendrimer from generation 1 through 6 (G1-G6) in a good solvent (water) by fully atomistic molecular dynamics (MD) simulations. We determine as a function of generation such structural properties as: radius of gyration, shape tensor, asphericity, fractal dimension, monomer density distribution, and end-group distribution functions. The sizes obtained from the MD simulations have been validated by Small Angle X-Ray Scattering (SAXS) experiment on dendrimer of generation 2 to 4 (G2-G4). A good agreement between the experimental and theoretical value of radius of gyration has been observed. We find a linear increase in radius of gyration with the generation. In contrast, Rg scales as ~ N^x with the number of monomers. We find two distinct exponents depending on the generations: x = 0.47 for G1-G3 and x = 0.28 for G3-G6 which reveals their non-space filling nature. In comparison with the amine terminated PAMAM dendrimer, we find Rg of G-th generation PETIM dendrimer is nearly equal to that of (G+1)-th generation of PAMAM dendrimer as observed by Maiti et. al. [Macromolecules,38, 979 2005]. We find substantial back folding of the outer sub generations into the interior of the dendrimer. Due to their highly flexible nature of the repeating branch units, the shape of the PETIM dendrimer deviates significantly from the spherical shape and the molecules become more and more spherical as the generation increases. The interior of the dendrimer is quite open with internal cavities available for accommodating guest molecules suggesting using PETIM dendrimer for guest-host applications. We also give a quantitative measure of the number of water molecules present inside the dendrimer.
description: 33 pages
Phase diagram of a dilute fermion gas with density imbalance
Creators: name: Pao, C. -H.
name: Wu, S. -T.
name: Yip, S. -K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We map out the phase diagram of a dilute two-component atomic fermion gas with unequal populations and masses under a Feshbach resonance. As in the case of equal masses, no uniform phase is stable for an intermediate coupling regime. For majority component heavier, the unstable region moves towards the BEC side. When the coupling strength is increased from the normal phase, there is an increased parameter space where the transition is into the FFLO state. The converse is true if the majority is light.
description: Proceeding for M$^2$S-HTSC VIII meeting, July 9-14 2006, Dresden; To appear in Physica C
Optical modes in linear arrays of dielectric spherical particles: A numerical investigation
Creators: name: Blaustein, Gail S.
name: Burin, Alexander L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We have investigated bound modes in finite linear chains of dielectric particles of various lengths, interparticle spacing and particle materials. Through a unique application of the multisphere Mie scattering formalism, we have developed numerical methods to calculate eigen-optical modes for various arrays of particles. These numerical methods involve the use of the multisphere scattering formalism as the entries in NxN matrices where N represents the number of particles in the chain. Eigenmodes of these matrices correspond to the eigen-optical modes of interest. We identified the eigenmodes with the highest quality factor by the application of a modified version of the Newton-Raphson algorithm. We found that convergence is strong using this algorithm for linear chains of up to several hundreds of particles. By comparing the dipolar approach with the more complex approach which utilizes a combination of both dipolar and quadrupolar approaches, we demonstrated that the dipolar approach has an accuracy of approximately 99%. We found that the quality factor Q of the mode increases with the cubed value of the number of particles in chain in agreement with the previously developed theory, the effects of disordering of particle sizes and inter-particle distances will be discussed.
description: Submitted to Proceedings of SPIE
COX PROPORTIONAL HAZARDS MODELING FOR SURVIVAL ANALYSIS OF HIV/AIDS PATIENTS IN GHANA: A LONGITUDINAL BIOSTATISTICAL APPROACH
Creators: name: A. Dinesh Kumar & Jerryson Ameworgbe Gidisu
Publisher: name: Zenodo
Year: 2025

description: This study addresses the urgent public health challenge of HIV/AIDS in Ghana by analyzing the survival outcomes of patients using Cox Proportional Hazards Modeling. Despite expanded antiretroviral therapy (ART) coverage, Ghana still reports high AIDS-related mortality and disparities in treatment adherence and healthcare access. The research is critical for improving survival prediction and informing targeted interventions. The objective was to identify demographic, clinical, and geographic factors influencing mortality among HIV/AIDS patients from 2020 to 2024. A retrospective cohort of 6,250 patients was analyzed using multivariate Cox regression with time-dependent covariates. Major findings indicate that age (HR = 1.05), tuberculosis co-infection (HR = 2.00), and rural residence (HR = 1.60) significantly increase mortality risk, while higher ART adherence (HR = 0.95), CD4 count (HR = 0.98), and socio-economic status (HR = 0.92) are protective. The overall model fit was strong (C-index = 0.84), with significant correlation coefficients: CD4 count (r = -0.81), ART adherence (r = -0.78), socio-economic status (r = -0.74), and healthcare accessibility (r = -0.92). These results reveal a multidimensional survival landscape shaped by behavioral, biological, and structural factors. The study concludes that early diagnosis, enhanced adherence programs, and rural healthcare investments can substantially improve outcomes. It recommends the adoption of dynamic survival modeling frameworks and cross-sectoral interventions to reduce mortality and promote equity in HIV care.
Experimental observation of oscillating and interacting matter wave dark solitons
Creators: name: Weller, A.
name: Ronzheimer, J. P.
name: Gross, C.
name: Frantzeskakis, D. J.
name: Theocharis, G.
name: Kevrekidis, P. G.
name: Esteve, J.
name: Oberthaler, M. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on the generation, subsequent oscillation and interaction of a pair of matter wave dark solitons. These are created by releasing a Bose-Einstein condensate from a double well potential into a harmonic trap in the crossover regime between one dimension (1D) and three dimensions (3D). The oscillation of the solitons is observed and the frequency is in quantitative agreement with simulations using the Gross-Pitaevskii equation. An effective particle picture is developed and reveals that the deviation of the observed frequencies from the asymptotic prediction $ν_{z}/\sqrt{2}$, where $ν_{z}$ is the longitudinal trapping frequency, results from the dimensionality of the system and the interaction between the solitons.
description: 5 pages, 3 figures
Study 2 - effects of grip and priming on the phantom vanish illusion
Creators: name: Tompkins, Matthew
name: Runhan Yang
name: Simons, Daniel J.
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Cognitive Psychology
subject: Cognition and Perception
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Preregistration for Study 2 where we are evaluating the contributions of the magician's pantomimed actions (grip) and the prior video (priming) on the phantom vanish illusion. The preregistration information is in the Files and linked below.
Hierarchical route to the emergence of leader nodes in real-world networks
Creators: name: O'Brien, Joseph D.
name: Oliveira, Kleber A.
name: Gleeson, James P.
name: Asllani, Malbor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: A large number of complex systems, naturally emerging in various domains, are well described by directed networks, resulting in numerous interesting features that are absent from their undirected counterparts. Among these properties is a strong non-normality, inherited by a strong asymmetry that characterizes such systems and guides their underlying hierarchy. In this work, we consider an extensive collection of empirical networks and analyze their structural properties using information theoretic tools. A ubiquitous feature is observed amongst such systems as the level of non-normality increases. When the non-normality reaches a given threshold, highly directed substructures aiming towards terminal (sink or source) nodes, denoted here as leaders, spontaneously emerge. Furthermore, the relative number of leader nodes describe the level of anarchy that characterizes the networked systems. Based on the structural analysis, we develop a null model to capture features such as the aforementioned transition in the networks' ensemble. We also demonstrate that the role of leader nodes at the pinnacle of the hierarchy is crucial in driving dynamical processes in these systems. This work paves the way for a deeper understanding of the architecture of empirical complex systems and the processes taking place on them.
description: Main text (10 pages, 6 figures) and supplemental material (17 pages, 11 figures)
Gerstenhaber structure and Deligne's conjecture for Loday algebras
Creators: name: Yau, Donald
Publisher: name: arXiv
Year: 2006
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 16E40

description: A method for establishing a Gerstenhaber algebra structure on the cohomology of Loday-type algebras is presented. This method is then applied to dendriform dialgebras and three types of trialgebras introduced by Loday and Ronco. Along the way, our results are combined with a result of McClure-Smith to prove an analogue of Deligne's conjecture for Loday algebras.
description: To appear in J. Pure Applied Algebra