cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Το παιδί και το παιχνίδι στην αρχαία ελληνική τέχνη: παιδαγωγική προσέγγιση
Creators: name: Βασιλοπούλου, Ειρήνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Αισθητική αγωγή
Aeschetic education

description: Ο στόχος που τέθηκε για την έρευνα του θέματος ήταν η προσέγγιση στοιχείων της πολιτιστικής κληρονομιάς της αρχαιότητας και μια πρώτη γνωριμία των παιδιών της προσχολικής ηλικίας με την τέχνη αυτής της εποχής. Το υλικό εντοπίστηκε, συγκεντρώθηκε και διερευνήθηκε με προσωπικές επισκέψεις σε μουσεία, βιβλιοθήκες και αρχαιολογικά ινστιτούτα της Ελλάδας και του εξωτερικού. Η διατριβή χωρίζεται σε τρία μέρη : στο πρώτο μέρος εξετάζεται η θέση του παιδιού και του παιχνιδιού στην οικογένεια και στην δημόσια ζωή κατά την αρχαιότητα, στη συνέχεια παρουσιάζονται αναλυτικά πενήντα εννέα παιδικά παιχνίδια και αθύρματα που είναι γνωστά από τις πηγές και γίνεται κατηγοροποίηση τους σε πίνακες. Στο δεύτερο μέρος μελετάται εξεκικτικά η θέση του παιδιού και του παιχνιδιού στην τέχνη της αρχαιότητας. Ακολουθεί ο κατάλογος με τις σωζόμενες απεικονίσεις από την γεωμετρικήστην ελληνιστική εποχή. Στο τρίτο μέρος παρουσιάζονται οι δυνατότητες αξιοποίησης του υλικού αυτής της εργασίας στην εκπαιδευτική διαδικασία του νηπιαγωγείου με την προσφορά ενδεικτικών δραστηριοτήτων προσέγγισης. Στα συμπερασματικά σχόλια συνοψίζονται ουσιαστικά ο στόχος προσφοράς στον εκπαιδευτικό υλικού αξιοποιήσιμου, ώστε να μπορέσουν τα νήπια μέσω της τέχνης να συνειδητοποιήσουν μια άλλη εποχή παρακάμπτοντας την ανάγκη χρονολόγησης
description: The aim of this research work was to approach elements of the ancient greek heritage and to establish a first acquintance of the preschool children with the ancient greek art. The material was found and searched through personal visits to museums, libraries and archaelogical institutes of Greece and other countries. The dissertation is divided into three parts. The first part examines the child and its play through the written sources. Fifty nine children's games and toys have been presented analyticaly and in categories analytical tables. In the second part the child and its play is studied evolutionaly in the ancient greek art. A cataloque with representations from the geometric to the hellenistic times are included. In the third part the possibilities for using the material of this work in the preschool education are presented along with the proposal of several educational programms. In conclusion, various practical applications is discussed, so that preschool children can understand the past through art, weathering the necessity of chronology
Instanton solution for Schwinger production of 't Hooft-Polyakov monopoles
Creators: name: Ho, David L. -J.
name: Rajantie, Arttu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present the results of an explicit numerical computation of a novel instanton in Georgi-Glashow SU(2) theory. The instanton is physically relevant as a mediator of Schwinger production of 't Hooft-Polyakov magnetic monopoles from strong magnetic fields. In weak fields, the pair production rate has previously been computed using the worldline approximation, which breaks down in strong fields due to the effects of finite monopole size. Using lattice field theory we have overcome this limit, including finite monopole size effects to all orders. We demonstrate that a full consideration of the internal monopole structure results in an enhancement to the pair production rate, and confirm earlier results that monopole production becomes classical at the Ambjorn-Olesen critical field strength.
description: 9 pages, 4 figures; corrected sign error in Eq. (2)
Μυστικές απελευθερωτικές οργανώσεις στην Ανατολική Θράκη, αρχές του 20ου αιώνα
Creators: name: Θεοδώρου, Φωτεινή
Publisher: name: Aristotle University of Thessaloniki
Year: 2001

description: Δεν διατίθεται περίληψη
Ο Πατριάρχης Αλεξανδρείας Θεόφιλος Β' ο Πάτμιος (1805-1825)
Creators: name: Κρικρής, Πλάτων
Publisher: name: Aristotle University of Thessaloniki
Year: 2002

description: Η διδακτορική αυτή διατριβή ασχολείται με την προσωπικότητα του Πατριάρχου Αλεξανδρείας Θεοφίλου Παγκώστα του Πατμίου. Με βάση ανάκδοτα έγγραφα και επιστολές εξετάζεται η ποιμαντική προσφορά του στην Αίγυπτο στις αρχές του 19ου αιώνος, όπως επίσης και η εθνική του δραστηριότητα στην επανάσταση του 1821 κατά την απελευθέρωση του έθνους μας. Ιστορικές αναφορές γίνονται τόσο για την πολιτική κατάσταση της Αιγύπτου όσο και της νήσου Πάτμου στην οποία διέμενε τα τελευταία έτη της ζωής του. Εξετάζεται επίσης το συγγραφικό του έργο που δεν είναι μεγάλο αλλά είναι σημαντικό για την θεολογική του ευρυμάθεια και τις εκκλησιολογικές του τοποθετήσεις
description: The present doctoral thesis deals with the person of Theophilos Pancostas the Patmian who was Patriarch of Alexandria. His pastoral contribution to the church in Egypt at the beginning of the nineteenth century and his patritic activities during the greek revolution of 1821, fought for the liberation of the Greek Nation are examined on the basis of unpublished documents and letters. Historical references are made to the political situation prevailing at the time both in Egypt and on the island of Patmos, where Theophilos spent the last years of his life. Theophilos literary work is also examined and though while not extensive, it is significant in its theological erudition and for its ecclesiological positions
Lifshitz-type formulas for graphene and single-wall carbon nanotubes: van der Waals and Casimir interations
Creators: name: Bordag, M.
name: Geyer, B.
name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Lifshitz-type formulas are obtained for the van der Waals and Casimir interaction between graphene and a material plate, graphene and an atom or a molecule, and between a single-wall carbon nanotube and a plate. The reflection properties of electromagnetic oscillations on graphene are governed by the specific boundary conditions imposed on the infinitely thin positively charged plasma sheet, carrying a continuous fluid with some mass and charge density. The obtained formulas are applied to graphene interacting with Au and Si plates, to hydrogen atoms and molecules interacting with graphene, and to single-wall carbon nanotubes interacting with Au and Si plates. The generalizations to more complicated carbon nanostructures are discussed.
description: 11 pages, 5 figures, 2 tables; to appear in Phys. Rev. B; misprints in Eqs.(33) and (34) are corrected
Low-Threshold Surface-Passivated Photonic Crystal Nanocavity Laser
Creators: name: Englund, Dirk
name: Altug, Hatice
name: Vuckovic, Jelena
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The efficiency and operating range of a photonic crystal laser is improved by passivating the InGaAs quantum well (QW) gain medium and GaAs membrane using an (NH4)S treatment. The passivated laser shows a four-fold reduction in nonradiative surface recombination rate, resulting in a four-fold reduction in lasing threshold. A three-level carrier dynamics model explains the results and shows that lasing threshold is as much determined by surface recombination losses as by the cavity quality factor (Q). Surface passivation therefore appears crucial in operating such lasers under practical conditions.
description: 3 pages, 2 figures
"Metatheatralisches" in den ,Epitrepontes': Zu Men. Epitr. V. 362-370
Creators: name: Lennartz, Klaus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 2 (1999): Göttinger Forum für Altertumswissenschaft
Syntactic elicitation (various)
Creators: name: UCL
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Indefinites, question-answer ellipsis, contrastive topic, subjecthood
Vector resonance $X_1(2900)$ and its structure
Creators: name: Agaev, S. S.
name: Azizi, K.
name: Sundu, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The new vector resonance $X_1(2900)$ observed recently by LHCb in the $ D^{-}K^{+}$ invariant mass distribution in the decay $B^{+} \to D^{+}D^{-}K^{+}$ is studied to uncover internal structure of this state, and calculate its physical parameters. In the present paper, the resonance $ X_1(2900)$ is modeled as an exotic vector state, $ J^P=1^- $, built of the light diquark $u^{T}Cγ_5d$ and heavy antidiquark $\overline{c} γ_μγ_5C\overline{s}^{T}$. The mass and current coupling of $ X_1(2900)$ are computed using the QCD two-point sum rule approach by taking into account various vacuum condensates up to dimension $10$. The width of the resonance $X_1(2900)$ is saturated by two decay channels $X_1 \to D^{-}K^{+}$ and $X_1 \to \overline{D}^{0}K^{0}$. The strong couplings $g_1$ and $g_2$ corresponding to the vertices $X_1D^{-}K^{+}$ and $X_1\overline{D} ^{0}K^{0}$ are evaluated in the context of the QCD light-cone sum rule method and technical tools of the soft-meson approximation. Results for the mass of the resonance $X_1(2900)$ $m=(2890~\pm 122)~\mathrm{MeV}$, and for its full width $Γ_{\mathrm{full}}=(93\pm 13)~\mathrm{MeV}$ are smaller than their experimental values reported by the LHCb collaboration. Nevertheless, by taking into account theoretical and experimental errors of investigations, interpretation of the state $X_1(2900)$ as the vector tetraquark does not contradict to the LHCb data. We also point out that analysis of the invariant mass distribution $D^{+}K^{+}$ in the same decay $ B^{+} \to D^{+}D^{-}K^{+}$ may reveal doubly charged four-quark structures $ [uc][\overline{s}\overline{d}]$.
description: 8 Pages, 1 Figure and 1 Table
Έλληνες το γένος: η ιθαγένεια και η ταυτότητα στο εθνικό κράτος των Ελλήνων (1821-1844)
Creators: name: Βόγλη, Ελπίδα Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Έθνος
Πολιτική κοινωνία
Ελληνική Επανάσταση
Αυτόχθονες (Εθνοσυνέλευση 1844)
Nation
Civil society
Greek revolution
Indigenous (Autochthones) (National Assembly 1844)

description: Το θέμα αυτής της διδακτορικής διατριβής είναι η εθνική και πολιτική ταυτότητα του ελληνα, η ελληνική ιθαγένεια με την ευρεία σημασία του όρου, και η σχέση που αναπτύσσεται μεταξύ των δύο: με άλλα λόγια ο τρόπος με τον οποίο οι κατά καιρούς συζητήσεις για το περιεχόμενο της ελληνικής ταυτότητας επηρέασαν μετά το 1821 τις νομοθετικές διατυπώσεις αλλά και οι προσαρμογές αυτής της ταυτότητας στις ανάγκες της σχετικής με την ιθαγένεια νομοθεσίας. Αντίθετα από τις κρατούσες απόψεις στην επιστημονική κοινότητα των νομικών, δεν ήταν μόνο το ενδιαφέρον για την κατοχύρωση πολιτικών δικαιωμάτων αλλά ήταν και η ανάγκη της διαμόρφωσης μιας νέας ταυτότητας για τους Ελληνες σημαντικοί παράγοντες που επηρέασαν τη σχετική νομοθεσία. Από την άποψη αυτή τόσο η νομοθεσία όσο και οι σχετικές συζητήσεις αποκαλύπτουν τη μετάβαση από μια αρκετά φιλελεύθερη θεώρηση που οδηγούσε στη δημιουργία μιας 'ανοικτής' κοινωνίας πολιτών κατά τα πρώτα στάδια της υπό εξέταση περιόδου σε μια συντηρητικότερη στάση που επέτρεπε εξαιρέσεις ή αποκλεισμούς προς το τέλος της. Οι αποκλεισμοί δε αυτοί παρουσιάζονταν ως απόρροια της μεταβολής των αρχών και των αξιών που είχαν εμφανιστεί και είχαν επικρατήσει την περίοδο του Διαφωτισμού και οι οποίες είχαν υποχωρήσει υπό την επίδραση της γενικότερης ανασφάλειας που συνδέθηκε άρρηκτα με το ρομαντικό εθνικισμό, με σημείο αναφοράς μάλιστα τον ανταγωνισμό με τα άλλα βαλκανικά κράτη.
description: In my doctoral dissertation I study greek citizenship and identity in the first decades of the newly established Greek nation, from 1821 until 1844, to see the relationship between the two and discern the ways in which they influenced each other. The principal argument of my study is that, contrary to what students of law would normally suggest, it was not only concern for the political rights of the new state's citizens but also the requirements of the new Greek identity that influenced the relevant legislation. To put it differently, the legislation concerning citizenship reflected no so much the effort to define and protect the rights of Greek citizens but rather the quest to define the identity of the modern Greeks. Another related argument is that the legislation and the relevant debates on citizenship reflect a shift from a rather inclusive attitude during the first stages to an exclusive attitude and defensive mood towards the end of the period, which were the result of a shift from the values and principles of the Enlightment to the insecurity of Romantic nationalism in the face of antagonism from other Balkan nations.
On Minimizing Cost in Legal Document Review Workflows
Creators: name: Yang, Eugene
name: Lewis, David D.
name: Frieder, Ophir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Technology-assisted review (TAR) refers to human-in-the-loop machine learning workflows for document review in legal discovery and other high recall review tasks. Attorneys and legal technologists have debated whether review should be a single iterative process (one-phase TAR workflows) or whether model training and review should be separate (two-phase TAR workflows), with implications for the choice of active learning algorithm. The relative cost of manual labeling for different purposes (training vs. review) and of different documents (positive vs. negative examples) is a key and neglected factor in this debate. Using a novel cost dynamics analysis, we show analytically and empirically that these relative costs strongly impact whether a one-phase or two-phase workflow minimizes cost. We also show how category prevalence, classification task difficulty, and collection size impact the optimal choice not only of workflow type, but of active learning method and stopping point.
description: 10 pages, 3 figures. Accepted at DocEng 21
Achievement unlocked : the effects of meta-rewards on gamers' experience
Creators: name: Giffard, MC
Publisher: name: University of Tasmania
Year: 2024

description: Meta-rewards are unlike other in-game rewards; they offer no powerups, in-game currency, cosmetic items, or alterations to gameplay. Rather, they appear briefly in the form of a notification then exist only in a digital trophy case. This raises the question – how can meta-rewards impact player behaviour if they have no objective value? Better understanding the mechanisms by which these rewards are likely to promote engagement may allow a better understanding of how gaming can become problematic for some individuals. Drawing on principles of operant conditioning, and the role of competence in promoting intrinsic motivation, we expected that meta-rewards delivered on a variable-ratio schedule would promote greater playtime, persistence (restarts following failure) and competence when compared to a fixed-ratio and no reward condition. This was tested with a bespoke video game “The Knight’s Tour” played by 56 participants, each playing the game in one of the three aforementioned reward conditions. Using Bayesian t-tests, we found primarily anecdotal evidence for the null – or weak evidence for there being no differences in playtime, persistence, or competence between reward conditions. Possible explanations for these findings are discussed as well as emerging trends in the data.
Multimode Radiative beta Cephei and delta Cephei Models
Creators: name: Smolec, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As a by-product of beta Cephei and delta Cephei radiative model surveys we have found interesting cases of multimode pulsation. In case of beta Cephei stars, we found two multimode domains with two or three modes being involved. The origin of the multimode pulsation can be traced to one of the two different mechanisms: either to the non-resonant coupling of the two excited modes (double-mode pulsation) or to the 2omega_1 = omega_0 + omega_2 parametric resonance (triple-mode pulsation). In case of delta Cephei models, a triple-mode pulsation domain, connected with the 2:1 resonance, 2omega_0 = omega_2, is found. These models are of theoretical interest only, since they do not obey a proper mass-luminosity relation.
description: to appear in the proceedings of the "Nonlinear stellar hydrodynamics", conference in honor of Robert Buchler's 65 birthday, 9-11 July 2007, Paris
Force control for robotic manipulators with structurally flexible links
Creators: name: Latornell, Douglas John
Publisher: name: University of British Columbia
Year: 2008

description: This thesis reports on the development of strategies for the control of contact forces exerted by a structurally flexible robotic manipulator on surfaces in its working environment. The controller is based on a multivariable, explicitly adaptive, long range predictive control algorithm. A static equilibrium bias term which is particularly applicable to the contact force control problem has been incorporated into the control algorithm cost function. A general formulation for the discrete time domain characteristic polynomial of the closed loop system has been derived and shown useful in tuning the controller. Kinematic and dynamic models of a robotic manipulator with structurally flexible links interacting with its working environment are derived. These models include inertia and damping effects in the contact dynamics in addition to the contact stiffness employed in most previous work. Linear analyses of the dynamic models for a variety of manipulator configurations reveal that the controlled variable, the contact force, is dominated by different open ioop modes of the system depending on the effective stiffness of the contacting surfaces. This result has important implications for the selection of the controller parameters. The performance of the controller has been evaluated using computer simulation. A special purpose simulation program, TWOFLEX, which includes the dynamics models of the manipulator and the environment as well as the control algorithm was developed during the research. The configurations investigated using the simulation include a single flexible manipulator link, two link manipulators with both rigid and flexible links, and a two link prototype model of the Mobile Servicing System (MSS) manipulator for the proposed Space Station, Freedom. The results show that the controller can be tuned to provide fast contact force step responses with minimal overshoot and zero steady-state error. The problem of maintaining control through the discontinuous situation of unexpectedly making contact with a surface is addressed with the introduction of a contact control logic level in the control hierarchy.
"Νέκυια": ερμηνευτική προσέγγιση της σύνθεσης του Πολυγνώτου στη Λέσχη των Κνιδίων στους Δελφούς
Creators: name: Μανωλεδάκης, Μανόλης
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Λέσχη των Κνιδίων
Lesche of the Cnidians
Νέκυια
Nekyia

description: Στο δεύτερο τέταρτο του 5ου αι. π.Χ. χτίστηκε στο ιερό του Απόλλωνα στους Δελφούς, σε ειδικά διαμορφωμένο άνδηρο, η λεγόμενη Λέσχη των Κνιδίων. τα λείψανά της εντοπίστηκαν κατά τις ανασκαφές στη ΒΑ γωνία του ιερού. Στο τρίτο τέταρτο του 4ου αι. π.Χ. όταν έγιναν επισκευές στο κτίσμα, οι Κνίδιοι χρηματοδότησαν την κατασκευή του νότιου αναλημματικού τοίχου του ανδήρου. Αν και οι ανασκαφές υποστήριξαν ότι η είσοδος του επιμήκους οικοδομήματος βρισκόταν στη νότια μακρά πλευρά του, υπάρχουν αρκετά στοιχεία που μας επιτρέπουν να θεωρήσουμε πιθανότερο ότι βρισκόταν στη δυτική στενή. Στο εσωτερικό, η "Νέκυια" και η "Ιλία Πέρσις", δυο ζωγραφικές συνθέσεις του Θάσιου ζωγράφου Πολύγνωτου - πιθανότητα σε ξύλινους πίνακες - κοσμούσαν το κτίσμα και έχουν περιφραφεί αναλυτικά από τον Παυσανία. Ιδιαίτερο ενδιαφέρον παρουσιάζει η σύνθεση της "Νέκυια". Οι 70 μορφές που απεικονίζονται να συνυπάρχουν στον Κάτω Κόσμο έχουν αντληθεί από πολύ διαφορετικές πηγές. Αλλες είναι δανεισμένες από την "Οδύσσεια", ενώ άλλες αναφέρονται στα Μυστήρια ή σε περιοχές - όπως οι Δελφοί - έχουν πολιτικούς συμβολισμούς ή παραπέμπουν στις λαικές παραδόσεις. Η ειρήνη και η ευσέβεια είναι δυο από τις σημαντικότερες έννοιες που προβάλλονται στη σύνθεση αυτή. Με βάση εικονογραφικά, αλλά και ιστορικά στοιχεία του 5ου αι. π.χ. υποστηρίζεται ότι η Μέση ανατέθηκε τελικά πιθανότερα από τους Αθηναίους παρά από τους Κνίδιους, μάλλον κατά την περίοδο 456-447 π.Χ.
description: In the second quarter of the 5th. cent. BC the so called Lesche of the Cnidians was erected in the sanctuary of Apollo at Delphi, on a specially formed embankment. Its architectural remains were excavated in the NE part of the sanctuary. In the third quarter of the 4th cent. B.C., when the building was repaired, the Cnidians dedicated the construction of the south analemma of the embakment. Although the excavators claim that the entrance of the building was at its north longside, there are some factors of the Lesche were decorated with "Nekyia" and "Iliupersis" two large painting by Polygnotus of Thasos, which were probably painted on wooden panels. Pausianias gives a detailed inscription of both of them. Especialy interesting is the composition called "Nekyia". The 70 figures that are depicted together in the Underworld were taken from very different sources. Some of them were taken from the "Odyssey", while others refering to the Mysteries or places, such as Delphi, carried political symbolism or were drawn from folk traditions. Peace and piety are two of the most important concepts which were presented in that composition. Judging by some iconographic as well as historical factors, it is more likely that the the dedication of the Lesche were not the Cnidians but the Athenians, who dedicated the building probably at the period 456-447 B.C.
The CARMENES search for exoplanets around M dwarfs, No evidence for a super-Earth in a 2-day orbit around GJ 1151
Creators: name: Perger, M.
name: Ribas, I.
name: Anglada-Escudé, G.
name: Morales, J. C.
name: Amado, P. J.
name: Caballero, J. A.
name: Quirrenbach, A.
name: Reiners, A.
name: Béjar, V. J. S.
name: Dreizler, S.
name: Galadí-Enríquez, D.
name: Hatzes, A. P.
name: Henning, Th.
name: Jeffers, S. V.
name: Kaminski, A.
name: Kürster, M.
name: Lafarga, M.
name: Montes, D.
name: Palé, E.
name: Rodríguez-López, C.
name: Schweitzer, A.
name: Osorio, M. R. Zapatero
name: Zechmeister, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The interaction between Earth-like exoplanets and the magnetic field of low-mass host stars are considered to produce weak emission signals at radio frequencies. A study using LOFAR data announced the detection of radio emission from the mid M-type dwarf GJ 1151 that could potentially arise from a close-in terrestrial planet. Recently, the presence of a 2.5-Me planet orbiting GJ 1151 with a 2-day period has been claimed using 69 radial velocities (RVs) from the HARPS-N and HPF instruments. We have obtained 70 new high-precision RV measurements in the framework of the CARMENES M-dwarf survey and use these data to confirm the presence of the claimed planet and to place limits on possible planetary companions in the GJ 1151 system. We analyse the periodicities present in the combined RV data sets from all three instruments and calculate the detection limits for potential planets in short-period orbits. We cannot confirm the recently-announced candidate planet and conclude that the 2-day signal in the HARPS-N and HPF data sets is most probably produced by a long-term RV variability possibly arising from an outer planetary companion yet unconstrained. We calculate a 99.9% significance detection limit of 1.50 ms-1 in the RV semi-amplitude, which places upper limits of 0.7 Me and 1.2 Me to the minimum masses of any potential exoplanets with orbital periods of 1 and 5 days, respectively.
Hadron multiplicities in e+e- annihilation with heavy primary quarks
Creators: name: Kisselev, A. V.
name: Petrov, V. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The multiple hadron production in the events induced by the heavy primary quarks in $e^+e^-$ annihilation is reconsidered with account of corrected experimental data. New value for the multiplicity in $b\bar{b}$ events is presented on the basis of pQCD estimates.
description: 16 pages, 6 figures. Version accepted for publication in EPJC
Multi-wavelength View of the Type IIn Zoo: Optical to X-ray Emission Model of Interaction-Powered Supernovae
Creators: name: Tsuna, Daichi
name: Kashiyama, Kazumi
name: Shigeyama, Toshikazu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Transients powered by interaction with the circumstellar medium (CSM) are often observed in wavelengths other than optical, and multi-wavelength modelling can be important when inferring the properties of the explosion and CSM, or for distinguishing from other powering mechanisms. We develop a model calculating time dependent emission spectrum of interaction-powered transients. We solve energy equations of electron-proton plasma in the shocked SN ejecta and CSM and a radiation transfer equation out to the outer edge of the CSM, incorporating the collisional relaxation and the comptonization of the bremsstrahlung radiation. We compare our model to observations of Type IIn supernovae covering frequency ranges from optical to X-rays. For SN 2010jl the observed optical and X-ray light curves can be consistently explained if clumpy or asymmetric structure in the CSM is assumed, in agreement with previous studies. For SN 2014C our model successfully reproduces the X-ray bremsstrahlung component and the emergence of H$α$ emission at 400 days after explosion. Finally we find a parameter space where the supernova is extremely X-ray bright, reaching $10^{43}$-$10^{44}\ {\rm erg\ s^{-1}}$ for up to $100$ days. Such X-ray transients are likely detectable with all-sky surveys by e.g. eROSITA.
description: 22 pages, 12 figures. Typos fixed, conclusions unchanged. Accepted for publication in ApJ
Stability of Gorenstein Categories
Creators: name: Sather-Wagstaff, Sean
name: Sharif, Tirdad
name: White, Diana
Publisher: name: arXiv
Year: 2007
Subjects: subject: Commutative Algebra (math.AC)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 13C05, 13D02, 13D07, 18G10, 18G15

description: We show that an iteration of the procedure used to define the Gorenstein projective modules over a commutative ring $R$ yields exactly the Gorenstein projective modules. Specifically, given an exact sequence of Gorenstein projective $R$-modules $G=...\xra{\partial^G_2}G_1\xra{\partial^G_1}G_0\xra{\partial^G_0} ...$ such that the complexes $\Hom_R(G,H)$ and $\Hom_R(H,G)$ are exact for each Gorenstein projective $R$-module $H$, the module $\coker(\partial^G_1)$ is Gorenstein projective. The proof of this result hinges upon our analysis of Gorenstein subcategories of abelian categories.
description: 21 pages, uses XY-pic. Version 2 contains corrected proofs of Lemma 2.1 and Theorem 4.8
Quantifying the Temperature of Heated Microdevices Using Scanning Thermal Probes
Creators: name: Reihani, Amin
name: Yan, Shen
name: Luan, Yuxuan
name: Mittapally, Rohith
name: Meyhofer, Edgar
name: Reddy, Pramod
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantifying the temperature of microdevices is critical for probing nanoscale energy transport.Such quantification is often accomplished by integrating resistance thermometers into microdevices. However, such thermometers frequently become structurally unstable and fail due to thermal stresses at elevated temperatures. Here, we show that custom-fabricated scanning thermal probes (STPs) with a sharp tip and an integrated heater/thermometer can accurately measure the temperature of microdevices held at elevated temperatures. This measurement is accomplished by introducing a modulated heat input to the STP after contacting the microdevice with the STP's tip, and characterizing the DC and AC components of the STP's temperature.From these measured temperature components, the tip-to-sample thermal resistance and the microdevice surface temperature are deduced via a simple lumped-capacitance model. The advances presented here can greatly facilitate temperature measurements of a variety of heated microdevices.
description: Manuscript submitted to Applied Physics Letters
Quantum Capacities of Channels with small Environment
Creators: name: Wolf, Michael M.
name: Perez-Garcia, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the quantum capacity of noisy quantum channels which can be represented by coupling a system to an effectively small environment. A capacity formula is derived for all cases where both system and environment are two-dimensional--including all extremal qubit channels. Similarly, for channels acting on higher dimensional systems we show that the capacity can be determined if the channel arises from a sufficiently small coupling to a qubit environment. Extensions to instances of channels with larger environment are provided and it is shown that bounds on the capacity with unconstrained environment can be obtained from decompositions into channels with small environment.
Social Media Identity Deception Detection: A Survey
Creators: name: Alharbi, Ahmed
name: Dong, Hai
name: Yi, Xun
name: Tari, Zahir
name: Khalil, Ibrahim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Social media have been growing rapidly and become essential elements of many people's lives. Meanwhile, social media have also come to be a popular source for identity deception. Many social media identity deception cases have arisen over the past few years. Recent studies have been conducted to prevent and detect identity deception. This survey analyses various identity deception attacks, which can be categorized into fake profile, identity theft and identity cloning. This survey provides a detailed review of social media identity deception detection techniques. It also identifies primary research challenges and issues in the existing detection techniques. This article is expected to benefit both researchers and social media providers.
description: Accepted for publication in ACM Computing Surveys
Why nuclear forces favor the highest weight irreducible representations of the fermionic SU(3) symmetry
Creators: name: Martinou, Andriana
name: Bonatsos, Dennis
name: Karakatsanis, K. E.
name: Sarantopoulou, S.
name: Assimakis, I. E.
name: Peroulis, S. K.
name: Minkov, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The consequences of the attractive, short-range nucleon-nucleon (NN) interaction on the wave functions of the Elliott SU(3) and the proxy-SU(3) symmetry are discussed. The NN interaction favors the most symmetric spatial SU(3) irreducible representation, which corresponds to the maximal spatial overlap among the fermions. The percentage of the symmetric components out of the total in an SU(3) wave function is introduced, through which it is found, that no SU(3) irrep is more symmetric than the highest weight irrep for a certain number of valence particles in a three dimensional, isotropic, harmonic oscillator shell. The consideration of the highest weight irreps in nuclei and in alkali metal clusters, leads to the prediction of a prolate to oblate shape transition beyond the mid-shell region.
description: 16 pages, 1 figure, 10 tables
title: BC Studies: The British Columbian Quarterly, No. 212: The Constitution Express: A 40-Year Retrospective (Winter 2021/22)
title: The Constitution Express: A 40-Year Retrospective (Winter 2021/22)
titleType: AlternativeTitle
Creators: name: BC Studies: The British Columbian Quarterly
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2022

description: Guest edited by Emma Feltes and Glen Coulthard. Originating in British Columbia, the Constitution Express was an Indigenous movement launched in 1980 in response to the Canadian government's plans to 'patriate' the Constitution from the UK. It was a local, national, and international movement with far-reaching impacts on decolonial thought and action and among colonized people around the world. This special issue reflects the simultaneously local and transnational facets of the movement, and contributes a nuanced perspective on provincial politics and the scholarship of Indigenous rights.
description: Contributors...231-233 Bibliography of BC...225-230 Book Reviews...209-224 Exhibition, Film, and New Media Reviews...205-208 Xelhs t'u7...129-136 Reflection...33-40 The Constitution Express Revisited...13-32 The Operation Was Successful, But the Patient Died...7-12 The Front...5 Tracking Justice: The Constitution Express to Shared Sovereignty...165-204 Break Point: Fourth World Nation's International Resistance to Canada during Patriation...103-128 Decolonization, Not Patriation: The Constitution Express at the Russell Tribunal...65-102 “We’re Not Going to Stop for Anything": Concerned Aboriginal Women and the Constitution Express...41-64 Has Constitutionalizing Aboriginal and Treaty Rights Made a Difference?...137-164
Virgo cluster early-type dwarf galaxies with the Sloan Digital Sky Survey. I. On the possible disk nature of bright early-type dwarfs
Creators: name: Lisker, Thorsten
name: Grebel, Eva K.
name: Binggeli, Bruno
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a systematic search for disks in 476 Virgo cluster early-type dwarf (dE) galaxies. Disk features (spiral arms, edge-on disks, or bars) were identified by applying unsharp masks to a combined image from three bands (g, r, i), as well as by subtracting the axisymmetric light distribution of each galaxy from that image. 14 objects are unambiguous identifications of disks, 10 objects show 'probable disk' features, and 17 objects show 'possible disk' features. The number fraction of these galaxies, for which we introduce the term dEdi, reaches more than 50% at the bright end of the dE population, and decreases to less than 5% for magnitudes B>16. The luminosity function of our full dE sample can be explained by a superposition of dEdis and ordinary dEs, strongly suggesting that dEdis are a distinct type of galaxy. This is supported by the projected spatial distribution: dEdis show basically no clustering and roughly follow the spatial distribution of spirals and irregulars, whereas ordinary dEs are distributed similarly to the strongly clustered E/S0 galaxies. While the flattening distribution of ordinary dEs is typical for spheroidal objects, the distribution of dEdis is significantly different and agrees with their being flat oblate objects. We therefore conclude that the dEdis are not spheroidal galaxies that just have an embedded disk component, but are instead a population of genuine disk galaxies. Several dEdis display well-defined spiral arms with grand design features that clearly differ from the flocculent, open arms typical for late-type spirals that have frequently been proposed as progenitors of early-type dwarfs. This raises the question of what process is able to create such spiral arms - with pitch angles like those of Sab/Sb galaxies - in bulgeless dwarf galaxies. (Abridged)
description: 25 pages, 20 figures. Accepted for publication by AJ. V2: Title shortened. Full resolution version available at http://www.astro.unibas.ch/~tlisker/papers/lisker2006_dEdi.html
Μελέτη των σεισμικών ακολουθιών στην Ελλάδα και η συμβολή της στην πρόγνωση των σεισμών
Creators: name: Κουρουζίδης, Μωϋσής,
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Σεισμικές ακολουθίες
Προσεισμοί
Μετασεισμοί
Seismic sequences
Foreshocks
Aftershocks

description: Το αντικείμενο της διατριβής είναι η μελέτη των σεισμικών ακολουθιών κύριων σεισμών που έγιναν στην Ελλάδα. Στο 1ο κεφάλαιο δίνονται βασικοί ορισμοί και παρουσιάζονται οι σύγχρονες απόψεις για τη γένεση των ακολουθιών και γίνεται ανασκόπηση της σχετικής έρευνας στην Ελλάδα. Στο 2ο κεφάλαιο περιγράφεται ο τρόπος σχηματισμού του καταλόγου ακολουθιών κύριων σεισμών με μέγεθος Μ>=5,0 που έγιναν στην Ελλάδα στο διάστημα 1986-1997 και δίνεται ο αντίστοιχος κατάλογος. Στο 3ο κεφάλαιο μελετώνται ιδιότητες προσεισμών (πιθανότητα γένεσης μεγαλύτερων προσεισμών, κλπ.) και εξετάζεται η χρονική και η κατά μέγεθος κατανομή των προσεισμών ορισμένων ακολουθιών. Στο 4ο κεφάλαιο μελετώνται οι μετασεισμοί. Προτείνονται σχέσεις της πιθανότητας γένεσης του μεγαλύτερου μετασεισμού, του αριθμού των μετασεισμών και της διάρκειας τους, κλπ. Μελετήθηκε και η εξέλιξη της σεισμικής δράσης. Στο 5ο κεφάλαιο μελετώνται σεισμικές ακολουθίες μεγάλης κλίμακας και συμπεραίνεται ότι ο κύριος σεισμός είναι το κρίσιμο σημείο μιας διαδικασίας που οδήγησε στη γένεσή του.
description: Properties of seismic sequences which occured in Greece and surrrounding area are studied in this thesis. Basic definitions and current views of the occurence of seismic sequences are given in the 1st chapter, along with a detailed review. In the 2nd chapter the procedure of compilation of the catalogue of the seismic sequences of strong )M>=5,0) shallow mainshocks which occured in Greece during 1986-1997 is described. The foreshocks are studied in the 3rd chapter and two relations are proposed that concern the probability of occurence of at least one foreshock before a mainshock and the probability the largest foreshock to occur days before the mainshock. The 4th chapter concerns after-shock properties and the evolution of a seismic sequence. In the 5th chapter large-scale seismic sequences are studied and it is shown that the process of generation of moderate magnitude shocks is a critical phenomenon culminating in a critical point (mainshock).
Infográfico comparativo entre Arquivologia e Biblioteconomia
Creators: name: Pedro Augusto Lira de Sousa
Publisher: name: Zenodo
Year: 2024

description: Infográfico comparativo entre Arquivologia e Biblioteconomia, destacando cinco principais diferenças, com base no artigo de Carlos Alberto Ávila Araújo entitulado "CIÊNCIA DA INFORMAÇÃO, BIBLIOTECONOMIA, ARQUIVOLOGIA E MUSEOLOGIA: relações institucionais e teóricas".
Jets and Tori in Proto-Planetary Nebulae
Creators: name: Huggins, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the time sequence for the appearance of jets and molecular tori in the transition of stars from the Asymptotic Giant Branch to the planetary nebula phase. Jets and tori are prominent features of this evolution, but their origins are uncertain. Using optical and millimeter line kinematics, we determine the ejection history in a sample of well-observed cases. We find that jets and tori develop nearly simultaneously. We also find evidence that jets typically appear slightly later than tori, with a lag time of a few hundred years. These characteristics provide strong evidence that jets and tori are physically related, and they set new constraints on theories of jet formation. The ejection of a discrete torus followed by jets on a short time scale favors the class of models in which a companion interacts with the central star. Models with long time scales, or with jets followed by a torus, are ruled out.
description: 24 pages, 2 figures, to be published in ApJ
Η τεχνολογία των χειροποίητων αποθηκευτικών αγγείων στον ελλαδικό χώρο: διαχρονική έρευνα της τεχνολογίας αυτής με βάση τα χειροποίητα αποθηκευτικά αγγεία στα νεότερα εργαστήρια του Μεσσηνιακού κόλπου
Creators: name: Γιαννοπούλου, Δήμητρα
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Αποθηκευτικά αγγεία
Χειροποίητα αγγεία
Storage vessels
Hand made vessels

description: Η μελέτη της τεχνολογίας των αποθηκευτικών αγγείων του ελλαδικού χώρου με βάση αρχαιολογικές και εθνογραφικές έρευνες δεν γίνεται αυτόνομα και μεμονωμένα, αλλά αντιμετωπίζεται ως μια ακολουθία εγχειρημάτων σχετιζόμενη με τις τεχνολογικές επιλογές, τις τεχνολογικές παραδόσεις και το "τεχνολογικό στυλ". Στη μελέτη ακολουθείται η εθνοαρχαιολογική προσέγγιση και η μελέτη της κεραμικής ύλη αποθηκευτικών αγγείων με αναλυτικές τεχνικές. Χρονικά η εργασία καλύπτει όλες τις περιόδους σε γενικά και τεχνολογικά ζητήματα και σε ειδικά ζητήματα την Ελληνιστική και τη Νεότερη Εποχή. Γίνεται ιστορική αναδρομή στις χρήσεις και στην τυπολογία των λίθων διαχρονικά. Γενικά διαπιστώνεται η χρήση των πλαστικών υλών στην κατασκευή αποθηκευτικών αγγείων διαχρονικά και ότι ο πειραματισμός στη χρήση των πρώτων υλών ήταν διαρκής, ενώ οι διαφοροποιήσεις στην τυπολογία και στην τεχνολογία των αγγείων διαφοροποιήθηκαν ανάλογα με τη γενικότερη τεχνολογική και πολιτιστική εξέλιξη κάθε περιόδου
description: The study of technology of storage vessels in Greece based in archaelogical and ethnographical research cannot be done isolate but fased as a "chaine operatoire" in connections with technological selections, traditions and style. The study follows the ethnoarchaological approach and the study of the ceramic paste of storage vessels the analytical techniques. The study covers all the periods in general technological and special issues and in special issues the hellenistic and post-byzantine period. The indication of archaeological and modern data in the research of technology of storage vessels comes out that the technology of these vessels from early periods was all ready existed. Experimentation in usage of raw materials, typology and technology of vessels according to the general cultural evolution was never give up
Heuristic Stopping Rules For Technology-Assisted Review
Creators: name: Yang, Eugene
name: Lewis, David D.
name: Frieder, Ophir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Technology-assisted review (TAR) refers to human-in-the-loop active learning workflows for finding relevant documents in large collections. These workflows often must meet a target for the proportion of relevant documents found (i.e. recall) while also holding down costs. A variety of heuristic stopping rules have been suggested for striking this tradeoff in particular settings, but none have been tested against a range of recall targets and tasks. We propose two new heuristic stopping rules, Quant and QuantCI based on model-based estimation techniques from survey research. We compare them against a range of proposed heuristics and find they are accurate at hitting a range of recall targets while substantially reducing review costs.
description: 10 pages, 2 figures. Accepted at DocEng 21
Cyclic and ruled Lagrangian surfaces in complex Euclidean space
Creators: name: Anciaux, Henri
name: Romon, Pascal
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53D12 (Primary) 53C42 (Secondary)

description: We study those Lagrangian surfaces in complex Euclidean space which are foliated by circles or by straight lines. The former, which we call cyclic, come in three types, each one being described by means of, respectively, a planar curve, a Legendrian curve of the 3-sphere or a Legendrian curve of the anti de Sitter 3-space. We also describe ruled Lagrangian surfaces. Finally we characterize those cyclic and ruled Lagrangian surfaces which are solutions to the self-similar equation of the Mean Curvature Flow. Finally, we give a partial result in the case of Hamiltonian stationary cyclic surfaces.
Cable support guidelines for underground hard rock mine operations
Creators: name: Nickson, Simon D.
Publisher: name: University of British Columbia
Year: 2008

description: The objective of this thesis is to expand upon the existing database of cable support practice, and develop revised design criteria for the support of underground openings. A new empirical database of 46 supported case histories was assembled from a six month field study,involving visits to 13 mines in Western Canada, the United States, and Ireland. A comprehensive review of current cable support theory, practice and design is presented. A statistical methodology is introduced to define zones of stability from an empirically collected database. Existing guidelines for the design of underground support are reviewed and calibrated. Current design criteria for cable support are often based on an even distribution of bolts over the supported surface. The point anchor approach involves the use of a high concentration of cables, installed into large open stope hanging walls from sublevel access drifts. This thesis proposes revised cable design guidelines for even distributions in open stope backs, and develops an approach for the point anchor design of hanging wall surfaces.
The Be Star 66 Ophiuchi: 60 Years of Disk Evolution
Creators: name: Marr, Keegan C.
name: Jones, Carol E.
name: Carciofi, Alex C.
name: Rubio, Amanda C.
name: Mota, Bruno C.
name: Ghoreyshi, Mohammad R.
name: Hatfield, Daniel W.
name: Rímulo, Leandro R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use a time-dependent hydrodynamic code and a non-LTE Monte Carlo code to model disk dissipation for the Be star 66 Ophiuchi. We compiled 63 years of observations from 1957 to 2020 to encompass the complete history of the growth and subsequent dissipation of the star's disk. Our models are constrained by new and archival photometry, spectroscopy and polarization observations, allowing us to model the disk dissipation event. Using Markov chain Monte Carlo methods, we find 66 Oph is consistent with standard B2Ve stellar properties. We computed a grid of 61568 Be star disk models to constrain the density profile of the disk before dissipation using observations of the H$α$ line profile and SED. We find at the onset of dissipation the disk has a base density of $2.5\times10^{-11}\ \rm{g\ cm^{-3}}$ with a radial power-law index of $n=2.6$. Our models indicate that after 21 years of disk dissipation 66 Oph's outer disk remained present and bright in the radio. We find an isothermal disk with constant viscosity with an $α= 0.4$ and an outer disk radius of $\sim$115 stellar radii best reproduces the rate of 66 Oph's disk dissipation. We determined the interstellar polarization in the direction of the star in the V-band is $p=0.63 \pm 0.02\%$ with a polarization position angle of $θ_{IS}\approx85.7 \pm 0.7^\circ$. Using the Stokes QU diagram, we find the intrinsic polarization position angle of 66 Oph's disk is $θ_{int}\approx98 \pm 3^\circ$.
description: 20 pages, 16 figures
Vates: 'a vi mentis'. Eine Etymologie Varros und ihr Schicksal in der lateinischen Literatur der frühen Kaiserzeit
Creators: name: Korenjak, Martin
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 2 (1999): Göttinger Forum für Altertumswissenschaft