cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
«Ο ρόλος της Ομοσπονδίας Λειτουργών Μέσης Εκπαίδευσης (Ο.Λ.Μ.Ε.) στην επιμόρφωση των εκπαιδευτικών:
Creators: name: Ταρενίδου, Ευγενία Λαζάρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Επιμόρφωση εκπαιδευτικών
Ομοσπονδία Λειτουργών Μέσης Εκπαίδευσης
Συνδικαλισμός
Επιμορφωτικά προγράμματα
Ερευνητική μέθοδος-συνέντευξη
Ποιοτική ανάλυση περιεχομένου
In service teacher education
Federation of secondary school teachers of Greece
Trade unionism
Training programs
Method of interview
Qualitative analysis of content

description: Κεντρικός σκοπός της εργασίας είναι να διερευνήσει και να αποτιμήσει το ρόλο και την παρουσία της Ομοσπονδίας Λειτουργών Μέσης Εκπαίδευσης (Ο.Λ.Μ.Ε.) στη διαμόρφωση των επιμορφωτικών πραγμάτων στην Ελλάδα, από το 1964 έως το 2004. Στο θεωρητικό μέρος, παρουσιάζεται μία σύντομη επισκόπηση του συνδικαλιστικού κινήματος των εκπαιδευτικών της δευτεροβάθμιας εκπαίδευσης. Στη συνέχεια, αναλύονται και ερμηνεύονται με κριτικό τρόπο οι θέσεις και οι απόψεις της Ο.Λ.Μ.Ε. αναφορικά με τους θεσμοθετημένους φορείς επιμόρφωσης (Διδασκαλείο, Σ.Ε.Λ.Μ.Ε., Π.Ε.Κ. και Σχολικός Σύμβουλος) και διερευνώνται οι προτάσεις της Ομοσπονδίας για μία αποτελεσματική και επιτυχή επιμόρφωση. Τα συμπεράσματα, που απορρέουν από το θεωρητικό μέρος της εργασίας, γίνεται μία προσπάθεια να διερευνηθούν στο εμπειρικό μέρος με την τεχνική της συνέντευξης. Ερευνητικό υλικό αποτελούν δέκα συνεντεύξεις από πρώην, τέως και νυν μέλη των Διοικητικών Συμβουλίων της Ο.Λ.Μ.Ε.. Στη συνέχεια, με τη μέθοδο της ποιοτικής ανάλυσης περιεχομένου, γίνεται η επεξεργασία και ανάλυση του υλικού και, τέλος, συζητούνται τα συμπεράσματα.
description: The dissertation is aimed to identify and evaluate the role of Federation of Secondary School Teachers of Greece (Ο.Λ.Μ.Ε.) in in-service teacher education, from 1964 until 2004, theoretically and experimentally. In the theoretical part, first reviewed is the trade unionism of secondary school teachers. Next, some of the basic aspects and attitudes of O.Λ.Μ.Ε. about relative legislation and the institutions are presented. Finally, the model of appropriate and effective in-service teacher education, suggested by O.Λ.Μ.Ε. is examined. The cores issues of the project are researched with the method of interview. The participants are both former and actual members of the administrative councils of O.Λ.Μ.Ε.. The data, concerning the research is processed and analyzed, with the method of qualitative analysis of content, and is discussed at the end.
Elicitation of verbs
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-221108-06 and VP-221108-07: Elicitation of miscellaneous verbs, some related to cutting and breaking. Recorded in stereo.
Maxillofacial computer aided surgery: a 5 years experience and future
Creators: name: Marecaux, Christophe
name: Chabanas, Matthieu
name: Luboz, Vincent
name: Pedrono, Annaig
name: Chouly, Franz
name: Swider, Pascal
name: Payan, Yohan
name: Boutault, Franck
Publisher: name: arXiv
Year: 2006
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This paper gives a review of the experience provided by our group in terms of computer aided maxillo-facial surgery.
Purveyors of fine halos III. Chemical abundance analysis of a potential omega Cen associate
Creators: name: Koch-Hansen, Andreas J.
name: Hansen, Camilla Juul
name: Lombardo, Linda
name: Bonifacio, Piercarlo
name: Hanke, Michael
name: Caffau, Elisabetta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Globular clusters (GCs) are important donors to the build-up of the Milky Way (MW) stellar halo, having contributed at the ten percent level over the Galactic history. Stars that originated from the second generation of dissolved or dissolving clusters can be readily identified via distinct light-element signatures such as enhanced N and Na and simultaneously depleted C and O abundances. In this paper we present an extensive chemical abundance analysis of the halo star J110842, which was previously kinematically associated with the massive MW GC $ω$ Centauri ($ω$Cen), and we discuss viable scenarios from escape to encounter. Based on a high-resolution, high signal-to-noise spectrum of this star using the UVES spectrograph, we were able to measure 33 species of 31 elements across all nucleosynthetic channels. The star's low metallicity of [FeII/H]=$-2.10$$\pm$0.02(stat.)$\pm0.07$(sys.) dex places it in the lower sixth percentile of $ω$Cen's metallicity distribution. We find that all of the heavier-element abundances, from $α$- and Fe-peak elements to neutron-capture elements are closely compatible with $ω$Cen's broad abundance distribution. However, given the major overlap of this object's abundances with the bulk of all of the MW components, this does not allow for a clear-cut distinction of the star's origin. In contrast, our measurements of an enhancement in CN and its position on the Na-strong locus of the Na-O anticorrelation render it conceivable that it originally formed as a second-generation GC star, lending support to a former association of this halo star with the massive GC $ω$Cen.
description: 9 pages, 6 figures, accepted for publication in Astronomy & Astrophysics
Dehn, Ulrich: das Klatschen der einen Hand: Was fasziniert uns am Buddhismus
Creators: name: Preß, Michael
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 51 Nr. 1 (2002): Ökumenische Rundschau, Band 51, Heft 1
The Crab Nebula's Dynamical Age as Measured from its Northern Filamentary Jet
Creators: name: Rudie, G. C.
name: Fesen, R. A.
name: Yamada, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a deep [O III] 4959,5007 image of the northern filamentary jet in the Crab Nebula taken with the 8.2m Subaru telescope. Using this image and an image taken with the KPNO 4m in 1988 (Fesen & Staker 1993), we have computed proper motions for 35 locations in the jet. The results suggest that when compared to the main body of the remnant, the jet experienced less outward acceleration from the central pulsar's rapidly expanding synchrotron nebula. The jet's apparent expansion rate yields an undecelerated explosion date for the Crab Nebula of 1055 plus or minus 24 C.E., a date much closer to the appearance of the historic 1054 C.E. guest star than the 1120 - 1140 C.E. dates estimated in previous studies using filaments located within the remnant's main nebula. Our proper motion measurements suggest the jet likely formed during the 1054 supernova explosion and represents the remnant's highest velocity knots possibly associated with a suspected N-S bipolar outflow from the supernova explosion.
description: 8 pages, 5 figures, Accepted to MNRAS
Influence of molecular structure on rheological and processing behaviour of molten polymers
Creators: name: Kazatchkov, Igor B.
Publisher: name: University of British Columbia
Year: 2009

description: The primary focus of this work was to study the effect of molecular characteristics of polymers on their rheological and processing behaviour. In particular, the melt fracture and wall slip phenomena have been extensively studied using various rheological tools and techniques. In order to study the effects of the two key molecular characteristics, the weight average molecular weight and the molecular weight distribution, two series of polyethylene resins have been specially selected. A new method of interpretation of the large-amplitude oscillatory shear (LAOS) data has been proposed. It provides an easier and more convenient way for the data analysis suitable for use as a non-linear viscoelastic polymer characterisation technique. In addition, this method has been shown to offer an alternative way for determination of the damping function. Furthermore, a criterion for melt fracture performance has been developed and it was found to be related to a characteristic relaxation time of polymers. Additional experiments have been carried out with two metallocene polyethylene resins, which exhibited unusually long start-up transients during their capillary extrusion. This phenomenon has been investigated in detail and the results are explained in terms of a qualitative molecular model based on the two mechanisms of slip, namely flow-induced chain detachment and disentanglement. A multimode dynamic slip model has also been developed and a procedure for the determination of its parameters is proposed. The model has been found to provide better predictions compared to a static and a single-mode slip models for the flow of molten polymers in transient experiments under slip conditions. Finally, a flow visualisation apparatus has been developed using a quartz capillary and interrupted laser beam. It allowed the measurement of the velocity profiles at high temperatures and shear stresses. Using this apparatus, the effect of processing aids on the flow profile and melt fracture behaviour of molten polypropylene has been studied.
Η έννοια της αρετής στον Αγιο Μάξιμο τον Ομολογητή:
Creators: name: Κισσά, Στυλιανή Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Αρετή
Μάξιμος ο Ομολογητής
Ανδρεία
Δικαιοσύνη
Αριστοτέλης
Αγάπη
Virtue
Maximus the Confessor
Bravery
Justice
Aristotle
Love

description: Στην εργασία αυτή γίνεται προσπάθεια να αναζητηθεί η έννοια της αρετής στη σκέψη του αγίου Μαξίμου, τον μεγάλο αυτό πατέρα του εβδόμου αιώνα. Παρατίθεται όσο το δυνατόν σύντομα το περιεχόμενο της διδασκαλίας των τριών μεγάλων φιλοσόφων, του Σωκράτη, του Πλάτωνα και του Αριστοτέλη. Η διδασκαλία αυτών θεωρείται το φιλοσοφικό υπόβαθρο της θεολογίας του Μαξίμου. Η αρετή για τον άγιο πατέρα έχει ανθρωπολογικό περιεχόμενο. Οι τέσσερις γενικές αρετές σωφροσύνη, ανδρεία, φρόνηση και δικαιοσύνη κατέχουν εξέχουσα θέση στο νοητό κόσμο, ενώ η τριάδα των χριστιανικών αρετών πίστη- ελπίδα-αγάπη αποτελούν προϋπόθεση για την ένταξη του ανθρώπου στο σώμα του Χριστού.
description: In this work becomes effort is sought the significance of virtue in the thought of Saint Maximus, this big father of seventh century. It is described as much as possible shortly the content of teaching of three big philosophers, Sokrates, Platon and Aristotle. The teaching of these is considered her philosophical background theology of Maximus.The virtue for the saint father has anthropologic content.The four virtues prudence, bravery, prudence and justice possess distinguished place in the conceivable world, while the trinity of christian virtues faith-hope- love are essential for it is included the person in the body of Christ.
Υποπολλαπλότητες πεπερασμένου τύπου:
Creators: name: Σινγκ, Νεκτάριος Balraj
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Υποπολλαπλασιασμός ευκλείδιου χώρου
Επιφάνειες πεπερασμένου τύπου
Λαπλασιανός τελεστής
Απεικόνιση Gauss
Submanifolds in Euclidean space
Surfaces of finite type
Laplace operator
Gauss map

description: Η παρούσα Διπλωματική Εργασία αναφέρεται στο θέμα της ταξινόμησης των υποπολλαπλοτήτων πεπερασμένου τύπου. Η παρούσα Διπλωματική Εργασία αναφέρεται στο θέμα της ταξινόμησης των Ε2 υποπολλαπλοτήτων πεπερασμένου τύπου. Αρχικά, θεωρούμε επιφάνειες του χώρου και μελετούμε αυτές που έχουν σταθερή μέση καμπυλότητα.
description: Our purpose is to classify all submanifolds of finite type in a Euclidean space Εm.
Location and energetics of the ultra-fast outflow in PG 1448+273
Creators: name: Laurenti, M.
name: Luminari, A.
name: Tombesi, F.
name: Vagnetti, F.
name: Middei, R.
name: Piconcelli, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ultra-fast outflows (UFOs) play a key role in the AGN feedback mechanism. It is therefore important to fully characterize their location and energetics. We study the UFO in the latest XMM-Newton archival observation of the NLSy1 galaxy PG 1448+273 by means of a novel modeling tool, that is, the Wind in the Ionized Nuclear Environment model (WINE). Our detection of the UFO in PG 1448+273 is very robust. The outflowing material is highly ionized, $\logξ= 5.53_{-0.05}^{+0.04}$ erg s$^{-1}$ cm, has a large column density, $N_\mathrm{H} = 4.5_{-1.1}^{+0.8} \times 10^{23}$ cm$^{-2}$, is ejected with a maximum velocity $v_0 = 0.24^{+0.08}_{-0.06}\,c$ (90% c.l. errors), and attains an average velocity $v_\mathrm{avg} = 0.152\,c$. WINE succeeds remarkably well to constrain a launching radius of $r_0=77_{-19}^{+31} \, r_\mathrm{S}$ from the black hole. We also derive a lower limit on both the opening angle of the wind ($θ> 72^{\circ}$) and the covering factor ($C_\mathrm{f} > 0.69$). We find a mass outflow rate $\dot{M}_\mathrm{out}=0.65^{+0.44}_{-0.33}\,M_\odot \mathrm{yr}^{-1} = 2.0^{+1.3}_{-1.0}\, \dot{M}_\mathrm{acc}$ and a large instantaneous outflow kinetic power $\dot{E}_\mathrm{out}=4.4^{+4.4}_{-3.6} \times 10^{44}$ erg s$^{-1}$ = 24% $L_\mathrm{bol}$ = 18% $L_\mathrm{Edd}$ ($1 σ$ errors). We find that a major error contribution on the energetics is due to $r_0$, stressing the importance of an accurate determination through a proper spectral modeling, as done with WINE. Using 20 Swift (UVOT and XRT) observations and the simultaneous OM data from XMM-Newton, we also find that $α_\mathrm{ox}$ undergoes large variations, with a maximum excursion of $Δα_\mathrm{ox} =-0.7$, after the UFO is detected, leading to a remarkable X-ray weakness. This may point towards a starving of the inner accretion disk due to the removal of matter through the wind.
description: 10 pages, 6 figures, 5 tables, accepted for publication in A&A
Determining ethylene group disorder levels in $κ$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br
Creators: name: Wolter, A. U. B.
name: Feyerherm, R.
name: Dudzik, E.
name: Süllow, S.
name: Strack, Ch.
name: Lang, M.
name: Schweitzer, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a detailed structural investigation of the organic superconductor $κ$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br at temperatures $T$ from 9 to 300 K. Anomalies in the $T$ dependence of the lattice parameters are associated with a glass-like transition previously reported at $T_g$ = 77 K. From structure refinements at 9, 100 and 300 K, the orthorhombic crystalline symmetry, space group {\it Pnma}, is established at all temperatures. Further, we extract the $T$ dependence of the occupation factor of the eclipsed conformation of the terminal ethylene groups of the BEDT-TTF molecule. At 300 K, we find 67(2) %, with an increase to 97(3) % at 9 K. We conclude that the glass-like transition is not primarily caused by configurational freezing-out of the ethylene groups.
Investigation of $B_{u,d}\to (π, K) π$ decays within unparticle physics
Creators: name: Chen, Chuan-Hung
name: Kim, C. S.
name: Yoon, Yeo Woong
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the implication of unparticle physics on the B_{u,d}\to (π, K) πdecays under the constraints of the B_{d,s}-\bar B_{d,s} mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension d_{\UP} could be constrained by the B_{d,s}-\bar B_{d,s} mixing phenomenology. Employing the minimum χ^2 analysis to the B_{u,d}\to (π, K) πdecays with the constraints of B_{d,s} mixing, we find that the puzzle of large branching ratio for B_{d}\to π^0 π^0 and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B^+ \to K^+ π^0 and B_d \to π^+π^- can be resolved well. However, the mixing induced CP asymmetry of B_d\to K_S π^0 could not be well accommodated by the unparticle contributions.
description: Analysis on mixing part is revised
Αρχαιοβοτανικές έρευνες στη νεολιθική θέση Κρεμαστή Κοζάνης:
Creators: name: Καραθάνου, Αγγελική Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Βόρεια Ελλάδα
Αρχαιοβοτανική
Νεολιθική
Λαθούρι
Κίτρινη λίμνη
Northern Greece
Archaeobotany
Neolithic
Lathyrus satirus
Kitrini Limni

description: Η παρούσα εργασία επιχειρεί μέσα από τη μελέτη των απανθρακωμένων φυτικών καταλοίπων από μια θέση της Νεότερης Νεολιθικής της βόρειας Ελλάδας, την Τούμπα Κρεμαστής Κοιλάδας, να προσεγγίσει διάφορες όψεις της ανθρώπινης δραστηριότητας που σχετίζονταν με τη διαχείριση των φυτών. Η μελέτη των αρχαιοβοτανικών καταλοίπων της Κρεμαστής υποδηλώνει τον απορριμματικό χαρακτήρα της προέλευσής τους, παραπέμποντας στη χρήση των λάκκων και τουλάχιστον ενός τμήματος της τάφρου που εντοπίστηκαν στον οριακό χώρο του οικισμού απ’ όπου προέκυψαν τα απανθρακωμένα φυτικά κατάλοιπα, ως χώρων όπου αποτίθεντο απορρίμματα με τη μορφή στάχτης, χωρίς να αποκλείει την πιθανότητα του «ενταφιασμού» αυτών σε ενδεχομένως «ιδιαίτερες» περιοδικού χαρακτήρα περιστάσεις με συμβολικό νόημα. Η κυριαρχία των ντυμένων σιτηρών και ιδίως του μονόκοκκου σιταριού, η σημαντική θέση των οσπρίων στη διατροφή των ανθρώπων, η συλλογή άγριων καρπών, η επεξεργασία και η αποθήκευση των φυτικών αγαθών, οι μέθοδοι απόρριψής τους, η ενδεχόμενη χρήση της κοπριάς ως καύσιμης ύλης, η πιθανή εφαρμογή εντατικών μεθόδων καλλιέργειας, όλα, φωτίζουν δειλά τις διάφορες όψεις της δραστηριότητας των κατοίκων της νεολιθικής κοινότητας που ζούσε στον οικισμό της Κρεμαστής, συμβάλλοντας παράλληλα στη γενικότερη απόπειρα προσέγγισης των νεολιθικών κοινωνιών της βόρειας Ελλάδας.
description: This paper attempts to approach the different aspects of past human activity in relation to plants use, through the analysis of charred plant remains from a Late Neolithic site of Northern Greece, Toumba Kremastis Koiladas. The analysis of the archaeobotanical remains indicates to the use of pits and, at least of a part, of the ditch located in the marginal area of the site from where the charred plant remains were recovered, as places where waste in the form of ashes was discarded, not excluding the possibility of its "burial" in "special" events with symbolic meaning. The predominance of glume wheats and in particular of einkorn, the important role of legumes in the diet of people, the collection of wild fruits, the processing, storing and discarding strategies of plant foods, the potential use of manure as fuel, the possible application of intensive husbandry practices, all, highlight the various aspects of the activity of the inhabitants of the Neolithic community of Kremasti, while contributing to the overall attempt of understanding the Neolithic communities of northern Greece.
Integration of Formal Proof into Unified Assurance Cases with Isabelle/SACM
Creators: name: Foster, Simon
name: Nemouchi, Yakoub
name: Gleirscher, Mario
name: Wei, Ran
name: Kelly, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Assurance cases are often required to certify critical systems. The use of formal methods in assurance can improve automation, increase confidence, and overcome errant reasoning. However, assurance cases can never be fully formalised, as the use of formal methods is contingent on models that are validated by informal processes. Consequently, assurance techniques should support both formal and informal artifacts, with explicated inferential links between them. In this paper, we contribute a formal machine-checked interactive language, called Isabelle/SACM, supporting the computer-assisted construction of assurance cases compliant with the OMG Structured Assurance Case Meta-Model. The use of Isabelle/SACM guarantees well-formedness, consistency, and traceability of assurance cases, and allows a tight integration of formal and informal evidence of various provenance. In particular, Isabelle brings a diverse range of automated verification techniques that can provide evidence. To validate our approach, we present a substantial case study based on the Tokeneer secure entry system benchmark. We embed its functional specification into Isabelle, verify its security requirements, and form a modular security case in Isabelle/SACM that combines the heterogeneous artifacts. We thus show that Isabelle is a suitable platform for critical systems assurance.
description: 28 pages, in revision for Formal Aspects of Computing
The evolutionary traceability of a protein
Creators: name: Arpit Jain
name: Perisa, Dominik
name: Haeseler, Arndt Von
name: Ebersberger, Ingo
Publisher: name: F1000 Research Limited
Year: 2019

description: Orthologs document the evolution of genes and metabolic capacities encoded in extant and ancient genomes. However, the similarity between orthologs decays with time, and ultimately it becomes insufficient to infer common ancestry. This leaves ancient gene set reconstructions incomplete and distorted to an unknown extent. Here we introduce the “evolutionary traceability” as a measure that quantifies, for each protein, the evolutionary distance beyond which the sensitivity of the ortholog search becomes limiting. Using yeast, we show that genes that were thought to date back to the last universal common ancestor are of high traceability. Their functions mostly involve catalysis, ion transport, and ribonucleoprotein complex assembly. In turn, the fraction of yeast genes whose traceability is not sufficient to infer their presence in last universal common ancestor is enriched for regulatory functions. Looking at the example of REC8, a protein essential for chromosome cohesion, we demonstrate how a traceability-informed adjustment of the search sensitivity identifies hitherto missed orthologs in the fast-evolving microsporidia. Taken together, the evolutionary traceability helps to differentiate between true absence and non- detection of orthologs, and thus improves our understanding about the evolutionary conservation of functional protein networks. “protTrace,” a software tool for computing evolutionary traceability, is freely available at https://github.com/BIONF/protTrace.git
Elicitation of plurals and partitives
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-221108-04: Elicitation of plurals, partitives, and plural stems. Recorded in stereo.
Scattering on the lateral one-dimensional superlattice with spin-orbit coupling
Creators: name: Khomitsky, D. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The problem of scattering of the two-dimensional electron gas on the lateral one-dimensional superlattice both having different strengths of Rashba spin-orbit coupling is investigated. The scattering is considered for all the electron states on a given Fermi level. The distribution of spin density components along the superlattice is studied for the transmitted states where the formation of standing waves is observed. It is found that the shape of spin density distribution is robust against the variations of the Rashba coupling constants, the superlattice potential strength, and the Fermi level in the electron gas.
description: 4 pages, 3 figures
Nonlinear Color-Metallicity Relations of Globular Clusters. IX. Different Radial Number Density Profiles between Blue and Red Clusters
Creators: name: Lee, Sang-Yoon
name: Chung, Chul
name: Yoon, Suk-Jin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The optical colors of globular clusters (GCs) in most large early-type galaxies are bimodal. Blue and red GCs show a sharp difference in the radial profile of their surface number density in the sense that red GCs are more centrally concentrated than blue GCs. An instant interpretation is that there exist two distinct GC subsystems having different radial distributions. This view, however, was challenged by a scenario in which, due to the nonlinear nature of the GC metallicity-to-color transformation for old ($\gtrsim$10 Gyr) GCs, a broad unimodal metallicity spread can exhibit a bimodal color distribution. Here we show, by simulating the radial trends in the GC color distributions of the four nearby giant elliptical galaxies (M87, M49, M60, and NGC 1399), that the difference in the radial profile between blue and red GCs stems naturally from the metallicity-to-color nonlinearity plus the well-known radial metallicity gradient of GC systems. The model suggests no or little radial variation in GC age even out to $\sim$20${R}_{\rm eff}$. Our results provide a simpler solution to the distinct radial profiles of blue and red GCs that does not necessarily invoke the presence of two GC subsystems and further fortify the nonlinearity scenario for the GC color bimodality phenomenon.
description: 18 pages, 11 figures, 3 tables, accepted for publication in ApJ
Οικογένεια και σχολείο ως παράγοντες αγωγής κατά τον Αγιο Ιωάννη το Χρυσόστομο:
Creators: name: Μπόμπου, Μαγδαληνή Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Αγωγή
Αυτοαγωγή
Οντολογική ανακαίνιση
Μετάληψις αγιότητος
Ευθύνες γονέων
Ευθύνες δασκάλων
Training
Self training
Ontological renewal
Participation in holiness
Responsibilities of parents
Responsibilities of teachers

description: Ο σκοπός της αγωγής είναι να δώσει στο παιδί τη βοήθεια για την προσωπική του ολοκλήρωση, την κοινωνική και πολιτισμική του ένταξη. Ο στόχος της χριστιανικής αγωγής σύμφωνα με τον Αγιο Ιωάννη Χρυσόστομο είναι η "μετάληψις αγιότητας". Το βίωμα της αγιότητας αφορά τον άνθρωπο και ξεχειλίζει στον κοινωνικό περίγυρο. Γονείς και δάσκαλοι έχουν μεγάλη ευθύνη στην αγωγή των παιδιών. Πρώτα διδάσκουν τα παιδιά με το παράδειγμά τους και λιγότερο με τα λόγια τους. Ο απώτερος στόχος πρέπει να είναι η αυτοαγωγή. Αυτό στην ορθόδοξη παράδοση εννοείται ως οντολογική ανακαίνιση.
description: The aim of training is to give the child the help for personal integration social and cultural placing. The purpose of christian education according to st. John Chrysostom is participation in holiness. The experience of holiness concerns the human and overflows the social surroundings. Parents and teachers have great responsibilities in the training of children.They teach the children first with their example and less with their words. The ultimate aim must be the self training. this, in the orthodox tradition understood as ontological renewal
Deformation of Curved BPS Domain Walls and Supersymmetric Flows on 2d Kähler-Ricci Soliton
Creators: name: Gunara, Bobby E.
name: Zen, Freddy P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider some aspects of the curved BPS domain walls and their supersymmetric Lorentz invariant vacua of the four dimensional N=1 supergravity coupled to a chiral multiplet. In particular, the scalar manifold can be viewed as a two dimensional Kähler-Ricci soliton generating a one-parameter family of Kähler manifolds evolved with respect to a real parameter, $τ$. This implies that all quantities describing the walls and their vacua indeed evolve with respect to $τ$. Then, the analysis on the eigenvalues of the first order expansion of BPS equations shows that in general the vacua related to the field theory on a curved background do not always exist. In order to verify their existence in the ultraviolet or infrared regions one has to perform the renormalization group analysis. Finally, we discuss in detail a simple model with a linear superpotential and the Kähler-Ricci soliton considered as the Rosenau solution.
description: 19 pages, no figures. Typos corrected. Published version
Bounds on the coefficients of the characteristic and minimal polynomials
Creators: name: Dumas, Jean-Guillaume
Publisher: name: arXiv
Year: 2006
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: This note presents absolute bounds on the size of the coefficients of the characteristic and minimal polynomials depending on the size of the coefficients of the associated matrix. Moreover, we present algorithms to compute more precise input-dependant bounds on these coefficients. Such bounds are e.g. useful to perform deterministic chinese remaindering of the characteristic or minimal polynomial of an integer matrix.
D1.1 - Website and Project LOGO
Creators: name: Mannari, Irene
name: Gulino, Erika
name: Paternò, Linda
name: Tognarelli, Selene
name: Menciassi, Arianna
Publisher: name: Zenodo
Year: 2022
Subjects: Project LOGO
Project website

description: This is the first version of the Deliverable "D1.1 - Website and Project LOGO", for the MAPWORMS project. This version will be available when it is approved by the EU.
Cost Estimating and Forecasting for Highway Work in Kentucky
Creators: name: Stevens, James D.
name: Walton, Jennifer R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1996
Subjects: subject: Transportation Engineering

description: There is a need for better cost estimating and forecasting for highway work in the Commonwealth of Kentucky. KRS45.245 grants the Interim Joint Committee on Transportation oversight of the biennial highway plan, including a review of all authorized highway project phases that exceed their estimates by 15%. In recent years, the Kentucky Transportation Cabinet has suffered the loss of many resources necessary to produce good cost estimates.  Estimates developed using current methods are not sufficiently accurate to preclude cost overruns in excess of 15%. Over the 1992 and 1994 bienniums, 362 overruns totaling $162,487,511 have been submitted to the Committee. All have been approved for additional funding. KYEstimate, a cost-per-mile model, has been developed to improve estimates made in the district offices. This program uses preconstruction and construction data to calculate a unit cost for projects. New projects may then be estimated on past cost of similar projects.
D1.1 - Website and Project LOGO
Creators: name: Irene Mannari
name: Erika Gulino
name: Linda Paternò
name: Selene Tognarelli
name: Arianna Menciassi
Publisher: name: Zenodo
Year: 2022
Subjects: Project LOGO
Project website
visual identity
European project
bioinspired robotics
marine worms
smart materials

description: This is the first version of the Deliverable "D1.1 - Website and Project LOGO", for the MAPWORMS project.
Multimessenger Constraints on Intergalactic Magnetic Fields from the Flare of TXS 0506+056
Creators: name: Batista, Rafael Alves
name: Saveliev, Andrey
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The origin of magnetic fields in the universe is an open problem. Seed magnetic fields possibly produced in early times may have survived up to the present day close to their original form, providing an untapped window to the primeval universe. The recent observations of high-energy neutrinos from the blazar TXS 0506+056 in association with an electromagnetic counterpart in a broad range of wavelengths can be used to probe intergalactic magnetic fields via the time delay between the neutrinos and gamma rays as well as the time dependence of the gamma-ray fluxes. Using extensive three-dimensional Monte Carlo simulations, we present a novel method to constrain these fields. We apply it to TXS 0506+056 and, for the first time, derive constraints on both the magnetic-field strength and its coherence length, considering six orders of magnitude for each.
description: Accepted ApJL, 2 figures, 7 pages
Σχεδιασμός συστήματος SiGe BiCMOS ανάγνωσης ακτινοβολίας από ανιχνευτές μεγάλης χωρητικότητας:
Creators: name: Καΐσερλης, Νικόλαος
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ανιχνευτής
Ακτινοβολία
Προενισχυτής
Μορφοποιητής
BiCMOS
Πυρίτιο-Γερμάνιο
Detector
Radiation
Preamplifier
Shaper
Silicon-Germanium

description: Τα συστήματα ανίχνευσης ακτινοβολίας αναπτύσσονται όλο και περισσότερο σε εφαρμογές που σχετίζονται με τον τομέα της ραδιενέργειας, με ιατρικές και διαστημικές εφαρμογές. Οι CMOS και BiCMOS τεχνολογίες επιλέγονται για την σχεδίαση των συστημάτων ανάγνωσης ανιχνευτών ακτινοβολίας Χ, λόγω της υψηλής πυκνότητας ολοκλήρωσης και της μικρής κατανάλωσης ισχύος που παρουσιάζουν, αλλά και της δυνατότητας υλοποίησης αναλογικών και ψηφιακών κυκλωμάτων στο ίδιο chip. Η δομή προενισχυτή , φίλτρου μορφοποίησης είναι η συνηθέστερη δομή των συστημάτων ανάγνωσης. Στην συγκεκριμένη εργασία προτείνεται μία εναλλακτική σχεδίαση ενός τέτοιου συστήματος και ένα ολοκληρώσημο semi-Gaussian φίλτρο μορφοποίησης βασισμένο στην LeapFrog τεχνική . Πιο συγκεκριμένα προτείνεται η σχεδίαση ενός πλήρως ολοκληρώσιμου συστήματος , προενισχυτή – μορφοποιητή , για ανιχνευτές ακτίνων Χ σε τεχνολογία 0.35μm SiGe BiCMOS από την AMS . Η προτεινόμενη τοπολογία είναι βασισμένη σε τελεστικούς ενισχυτές . Στοιχεία για τα επίπεδα θορύβου , την συχνοτική περιοχή λειτουργίας καθώς και τις προδιαγραφές σχεδίασης του συγκεκριμένου συστήματος παρουσιάζονται στην ανάλυση , η οποία υποστηρίζεται από εκτεταμένα αποτελέσματα προσομοιώσεων τα οποία επιβεβαιώνουν την προτεινόμενη μεθοδολογία σχεδίασης καθώς και την ικανοποιητική απόδοση του συστήματος .
description: Radiation detection has been increasingly developed in various fields of radioactivity control, medical imaging and space science. CMOS and BiCMOS technologies are chosen for the implementation of integrated front end systems due to their high integration density, relatively low power consumption, and capability to combine analog and digital circuits on the same chip. The preamplifier–shaper structure is commonly adopted in the design of the above systems. In this work , an alternative design technique is introduced for a detection system and a IC semi-Gaussian shaping filter is suggested based on the LeapFrog technique . More specific a fully integrated preamplifier - shaper system for X-rays silicon strip detectors is developed in 0.35μm SiGe BiCMOS process by AMS. The proposed topology is based on op-amps. Considerations about the noise performance, the bandwidth and the applications design specifications are presented. Analysis is supported by extensive simulation results, which confirm the proposed design methodology and the satisfactory system performance.
Sources, sinks and stores of Nitrogen and Phosphorus associated with public water supply and the vadose zone
Creators: name: Ascott, Matthew
Publisher: name: Lancaster University
Year: 2019

description: Reactive Nitrogen (N) and Phosphorus (P) in the environment remain a considerable problem for both ecosystems and drinking water quality. Although public water supply processes and the vadose zone are well known components of the anthropogenically perturbed hydrological cycle, the impact of these components on N and P cycling is poorly understood. The aim of this thesis was to improve the understanding of sources, sinks and stores of N and P associated with public water supply and the vadose zone, to support the development of integrated nutrient management approaches. Mains water leakage is shown to be an important source of P, which will increase in importance in the future. Mains water leakage of P has significant temporal variability associated with winter burst events, summer shrink-swell leakage and active leakage control. Mains water leakage has also been shown to be an important source of N in urban areas, contributing up to 20% of all N loads. Abstraction for public water supply has been shown to be a considerable temporary sink of N, equivalent to up to 39% of denitrification. The unsaturated zone has also been shown to be an important store of nitrate, with the quantity of nitrate stored in the vadose zone being equivalent to 200% of estimates of inorganic N stored in soils globally. The results of this thesis have important implications for the development of integrated nutrient management approaches. The sources, sinks and stores associated with public water supply and the vadose zone quantified in this thesis should be considered in future macronutrient budgets and models. Continued use of existing models which do not consider these additional N and P sources, sinks and stores should be tempered with the knowledge gained from this research.
Regularity and finite element approximation for two-dimensional elliptic equations with line Dirac sources
Creators: name: Li, Hengguang
name: Wan, Xiang
name: Yin, Peimeng
name: Zhao, Lewei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the elliptic equation with a line Dirac delta function as the source term subject to the Dirichlet boundary condition in a two-dimensional domain. Such a line Dirac measure causes different types of solution singularities in the neighborhood of the line fracture. We establish new regularity results for the solution in a class of weighted Sobolev spaces and propose finite element algorithms that approximate the singular solution at the optimal convergence rate. Numerical tests are presented to justify the theoretical findings.
description: 21 pages, 11 figures
Seismic Emissions from a Highly Impulsive M6.7 Solar Flare
Creators: name: Martinez-Oliveros, J. C.
name: Moradi, H.
name: Donea, A-C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: On 10 March 2001 the active region NOAA 9368 produced an unusually impulsive solar flare in close proximity to the solar limb. This flare has previously been studied in great detail, with observations classifying it as a type 1 white-light flare with a very hard spectrum in hard X-rays. The flare was also associated with a type II radio burst and coronal mass ejection. The flare emission characteristics appeared to closely correspond with previous instances of seismic emission from acoustically active flares. Using standard local helioseismic methods, we identified the seismic signatures produced by the flare that, to date, is the least energetic (in soft X-rays) of the flares known to have generated a detectable acoustic transient. Holographic analysis of the flare shows a compact acoustic source strongly correlated with the impulsive hard X-ray, visible continuum, and radio emission. Time-distance diagrams of the seismic waves emanating from the flare region also show faint signatures, mainly in the eastern sector of the active region. The strong spatial coincidence between the seismic source and the impulsive visible continuum emission reinforces the theory that a substantial component of the seismic emission seen is a result of sudden heating of the low photosphere associated with the observed visible continuum emission. Furthermore, the low-altitude magnetic loop structure inferred from potential--field extrapolations in the flaring region suggests that there is a significant inverse correlation between the seismicity of a flare and the height of the magnetic loops that conduct the particle beams from the corona.
description: 16 pages, 7 figures, Solar Physics Topical Issue: SOHO 19/GONG 2007 "Seismology of Magnetic Activity", Accepted
The High-Redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: Radio Source Properties
Creators: name: Golden-Marx, Emmet
name: Blanton, Elizabeth
name: Rachel-Paterno-Mahler
name: Brodwin, Mark
name: Ashby, Matt
name: Moravec, Emily
name: Shen, Lu
name: Lemaux, Brian
name: Lubin, Lori
name: Gal, Roy
name: Tomczak, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The shape of bent, double-lobed radio sources requires a dense gaseous medium. Bent sources can therefore be used to identify galaxy clusters and characterize their evolutionary history. By combining radio observations from the Very Large Array Faint Images of the Radio Sky at Twenty centimeters (VLA FIRST) survey with optical and infrared imaging of 36 red sequence selected cluster candidates from the high-z Clusters Occupied by Bent Radio AGN (COBRA) survey (0.35 < z < 2.2), we find that radio sources with narrower opening angles reside in richer clusters, indicating that the cluster environment impacts radio morphology. Within these clusters, we determine 55.5% of our radio host galaxies are brightest cluster galaxies (BCGs) and that the remainder are associated with other luminous galaxies. The projected separations between the radio sources and cluster centers and the sizes of the opening angles of bent sources follow similar distributions for BCG and non-BCG host populations, suggesting that COBRA host galaxies are either BCGs or galaxies that may evolve into BCGs. By measuring the orientation of the radio sources relative to the cluster centers, we find between 30% and 42% of COBRA bent sources are outgoing and have passed through the cluster center, while between 8% and 58% of COBRA bent sources are infalling. Although these sources typically do not follow directly radial paths, the large population of outgoing sources contrasts what is observed in low-z samples of bent sources and may indicate that the intracluster medium is less dense in these high-z clusters.
description: 29 pages, 18 figures, 2 tables. Accepted to ApJ on November 23, 2020
Αναγνώριση φύλου με χρήση τεχνικών βιομετρίας βασισμένων σε απτικές συσκευές:
Creators: name: Ζαρογιάννη, Ελένη Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Διαφορές ανδρών-γυναικών
Αντίληψη χώρου
Βιομετρικά χαραχτηριστικά συμπεριφοράς
Οπτική τεχνολογία
Sex difficulties
Spatial abilities
Biometrics
Haptics
3dimensional space

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι ο διαχωρισμός ανδρών και γυναικών με βάση τον τρόπο που ακλουθούν μια καμπύλη στον τρισδιάστατο χώρο με χρήση απτικής τεχνολογίας. Για τον σκοπό αυτό, υλοποιήθηκε μια σειρά απλών πειραμάτων στα οποία μια ομάδα ανδρών και μια ομάδα γυναικών αντίστοιχα καλούνται να ακολουθήσουν μια πορεία πάνω σε μια τρισδιάστατη επιφάνεια χρησιμοποιώντας μια απτική συσκευή. Για την δημιουργία των συγκεκριμένων πειραμάτων στηριχθήκαμε σε επιστημονικά τεκμηριωμένες έρευνες που αποδεικνύουν διαφορές ανάμεσα στα δυο φύλα ως προς την αντίληψη του χώρου. Στην περαιτέρω διαδικασία διαχωρισμού ανδρών και γυναικών πραγματοποιήθηκε επεξεργασία βιομετρικών χαρακτηριστικών συμπεριφοράς των χρηστών που έλαβαν μέρος στα πειράματα αυτά. Επιτεύχθηκε ένα ποσοστό της τάξης του 83.75% ακριβούς αναγνώρισης ανδρών και γυναικών με βάση το σύστημα που υλοποιήθηκε.
description: Gender differences in spatial abilities are widely acknowledged and scientifically proved. In this paper, we explore the feasibility of implementing a system capable of distinguishing between men and women, based on a test that examines abilities in spatial contexts. Behavioral biometric traits were considered, making the assumption that every man and woman has a unique way of performing spatial related tasks. Haptics, which is a state-of-the-art tool that simulates the sense of touch in virtual environments through its force-feedback devices, was also used in order to capture and record these behavioral biometric characteristics. The idea of employing haptic-based behavioral biometrics in order to identify the sex of a person in a test that examines spatial ability in 3-dimensional space is novel and firstly introduced in this paper. A 83.75% accuracy of distinguishing men and women was observed, suggesting that the use of haptic technology is suitable for this purpose.
Exchange interaction of magnetic impurities in graphene
Creators: name: Dugaev, V. K.
name: Litvinov, V. I.
name: Barnas, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The indirect exchange interaction between magnetic impurities localized in a graphene plane is considered theoretically, with the influence of intrinsic spin-orbit interaction taken into account. Such an interaction gives rise to an energy gap at the Fermi level, which makes the usual RKKY model not applicable. The results show that the effective indirect exchange interaction is described by a range function which decays exponentially with the distance between magnetic moments. The interaction is also shown to depend on whether the two localized moments belong to the same sublattice or are located in two different sublattices.
description: 5 pages, 1 figure
Η προσφορά της εκκλησίας και του ιερού κλήρου στη Μ. Ασία από το 1913 ως το 1922:
Creators: name: Τσίρης, Θεόδωρος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Εκκλησία
Κλήρος
Εθνος
Διωγμπός
Γενοκτονία
Εθνοκάθαρση
Church
Clergy
Nation
Persecution
Genocide
Ethnic cleansing

description: Η συγκεκριμένη εργασία προσπαθεί να αναδείξει το ρόλο της ορθόδοξης εκκλησίας και του ιερού κλήρου, στην προσπάθεια διάσωσης του ελληνισμού μεταξύ του 1913 και 1922. Στο κεφάλαιο1 αναλύεται ο σύνδεσμος της ορθοδόξου εκκλησίας με τον ελληνισμό στο πέρασμα των αιώνων. Στο 2 σημειώνονται στοιχεία για τον εξελληνισμό και εκχριστιανισμό της Μ. Ασίας, ενώ στο 3 εξετάζεται το ιστορικό πλαίσιο του θέματος. το κύριο θέμα εξετάζεται στο κεφάλαιο 4. Στο 5 ερευνάται η αντίστοιχη δραστηριότητα του κλήρου στον Πόντο και στο κεφάλαιο 6 η ένταξη των εθνομαρτύρων κληρικών στο αγιολόγιο της ορθόδοξης εκκλησίας
description: The present thesis tries to show the role of orthodoxe church and its Holy Clergy, in the maintenance and rescue of hellenism between 1913 adn 1922, in chapter 1 is analyzed the connection of church and greek nation in the passage of centuries. In chapter 2 elements about Asia MInor are mentioned, while in chapter 3 the historical context of our subject (1913-1922) comes under examination. The mainly subject will be searched in chapter 4. In chapter 5 the corresponding activity in Pontos is searched and in chapter 6 the integration of national martyrs of clergymen in the agiology of the orthodox church
Active particles with polar alignment in ring-shaped confinement
Creators: name: Fazli, Zahra
name: Naji, Ali
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study steady-state properties of a suspension of active, nonchiral and chiral, Brownian particles with polar alignment and steric interactions confined within a ring-shaped (annulus) confinement in two dimensions. Exploring possible interplays between polar interparticle alignment, geometric confinement and the surface curvature, being incorporated here on minimal levels, we report a surface-population reversal effect, whereby active particles migrate from the outer concave boundary of the annulus to accumulate on its inner convex boundary. This contrasts the conventional picture, implying stronger accumulation of active particles on concave boundaries relative to the convex ones. The population reversal is caused by both particle alignment and surface curvature, disappearing when either of these factors is absent. We explore the ensuing consequences for the chirality-induced current and swim pressure of active particles and analyze possible roles of system parameters, such as the mean number density of particles and particle self-propulsion, chirality and alignment strengths.
description: 12 pages, 7 figures