cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ultraschallbasierte in situ Vorspannkraftermittlung an Schrauben ohne Referenzmessung im nicht verspannten Zustand durch Kombination von Longitudinal‐ und Transversalwellen
Creators: name: Niwinski, T. J.
name: Kraemer, F.
name: Klein, M.
name: Oechsner, M.
name: Herter, S.
name: Becker, M. M.
Publisher: name: Wiley-VCH
Year: 2024

description: Die ultraschallbasierte Vorspannkraftermittlung an Schrauben wird derzeit überwiegend mit der Ein‐Moden‐Methode realisiert. Diese Methode basiert auf der Laufzeitmessung von Longitudinalwellen. Hierbei ist für jede Schraube eine Referenzmessung im nicht verspannten Zustand notwendig. In der vorliegenden Publikation wird die Ein‐Moden‐Methode um eine weitere Ultraschallwellenart, die Transversalwelle, ergänzt. Es wird dargestellt, dass mit der Zwei‐Moden‐Methode auf eine Referenzmessung im nicht verspannten Zustand verzichtet werden kann. Ein analytisches Verfahren zur Bestimmung des schraubfallspezifischen akusto‐elastischen Materialkennwerts (K‐Wert) wird vorgestellt, welcher für die ultraschallbasierte Vorspannkraftermittlung notwendig ist. Die analytisch ermittelten K‐Werte werden mit experimentellen K‐Werten aus Zugversuchen an Schrauben verglichen. Der Einfluss von Werkstoff, Festigkeitsklasse und Oberflächenschutzsystem wurde an zylindrischen Werkstoffproben ermittelt. In Bauteilversuchen wurden Vorspannkräfte an montierten Schrauben mit der Zwei‐Moden‐Methode ermittelt, ein möglicher Einfluss des Montageverfahrens untersucht und die Ergebnisse hinsichtlich ihrer Genauigkeit interpretiert.
User models for intent-based authoring
Creators: name: Csinger, Andrew
Publisher: name: University of British Columbia
Year: 2009

description: Authoring is the collection, selection, preparation and presentation of information to one or more readers by an author. The thesis takes a new, critical look at traditional approaches to authoring, by asking what knowledge is required and at which stages of the process. From this perspective, traditional authoring is seen to entrench an early commitment to both form and content. Although the late binding of form is now commonplace in structured document preparation systems, a similar delay in the binding of content is necessary to achieve user-tailored interaction. The authoring paradigm we have developed to service this goal is called intent-based authoring, because the author supplies at compile-time a communicative goal, or intent. Just as SGML editors and HTML browsers defer rendering decisions until run-time by referring to a local stylesheet, intent-based authoring systems defer content-selection decisions until runtime when they refer to models of both author and reader(s). This thesis shows that techniques from artificial intelligence can be developed and used to acquire, represent and exploit such models. Probabilistic abduction is used to recognize user models, and cost-based abduction to design tailored presentations. These techniques are combined in a single framework for best-first recognition and design. These reasoning techniques are further allied with an interaction paradigm we call scrutability, whereby users critique the model in pursuit of better presentations; users see a critical subset of the model determined by sensitivity analysis and can change values through a graphical user interface. The interactivity is modelled to ensure that representations of the user model to the user are made in the most perceptually salient manner. A prototype for intent-based video authoring is described. Video is used as a test medium because it is a "worst case" temporally linear medium; a viable solution to video authoring problems should apply easily to more tractable traditional media. The primary contribution of this dissertation is to the field of applied artificial intelligence, specifically to the emerging field of user modelling. The central contribution is the intent-based authoring framework for separating intent from content.
Growth of massive black holes during radiatively inefficient accretion phases
Creators: name: Cao, Xinwu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The massive black holes in most faint active galactic nuclei (AGNs) and even normal galaxies are still accreting gases, though their accretion rates are very low. Radiatively inefficient accretion flows (RIAFs) are supposed in these faint sources, which should radiate mostly in the hard X-ray band. We calculate the contribution to the X-ray background from both the bright AGNs and the RIAFs in faint AGNs/normal galaxies. Our calculations show that both the observed intensity and spectral shape of the XRB with an energy peak at ~30$ keV can be well reproduced without including the emission of Compton-thick AGNs, if the massive black holes in faint AGNs/normal galaxies are spinning rapidly with a~0.9 and accreting at rates ~1.0-3.0\times 10^{-4}. It indicates that less than ~5 per cent of local massive black hole mass density was accreted during radiatively inefficient accretion phases, which is obviously only an upper limit, because Compton-thick AGNs have not been considered. If the same number of the Compton-thick AGNs with log N_H=24-25 as those with log N_H=23-24 is considered, the fraction of local black hole mass density accumulated during inefficient accretion phases should be lower than ~2 per cent.
description: Astrophys.J. 659 (2006) 950-957
Adolescents with type 1 diabetes and the paediatrics diabetes clinic
Creators: name: A. Dockery, L.
name: McCaffrey, A.
name: Connolly, M.
name: M. Neylon, O.
name: O'GORMAN, CLODAGH
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Aim
This report aims to characterise the adolescent population with T1D attending University Hospital Limerick (UHL) paediatric diabetes services and carry out subgroup analysis of high-risk patients. High-risk are those with HbA1c≥75mmol/mol(9%) and factors impacting disease management including psychosocial issues/other chronic diseases.
Methods
Data was collected using Microsoft Excel, from adolescents attending UHL paediatric diabetes clinic and age≥ 14 years between January 1st-June 30th 2022, and analysed using Excel, Minitab and OpenStax.
Results
74 adolescents, equal males and females, of whom 20 were high-risk, were included. High-risk individuals were less likely to use insulin pumps or continuous glucose monitoring devices, and more likely to have lipohypertrophy than non-high-risk peers. Of those high-risk, 6 had at least one consultation with a medical social worker (MSW) (1 of these had another chronic disease and saw MSW dedicated to this disease-team) and 14 had at least one consultation with a paediatric clinical psychologist. There is a clear deficit of MSW and paediatric psychology input in the management of these adolescents.
Conclusion
Active screening for diabetic control risk factors as well as appropriate funding to support team-specific MSW and psychology input for high-risk patients is urgently required to meet current best practice guidelines.
Imaging Across the Spectrum: Synergies Between SKA and Other Future Telescopes
Creators: name: Lobanov, Andrei P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Square Kilometer Array will be operating at the same time with several new large optical, X-ray and Gamma-ray facilities currently under construction or planned. Fostering synergies in astrophysical research made across different spectral bands presents a compelling argument for designing the SKA such that it would offer imaging capabilities similar to those of other future telescopes. Imaging capabilities of the SKA are compared here with those of the major future astrophysical facilities.
description: 2 pages, 1 figure; "Exploring the Cosmic Frontier: Astrophysical Instruments for the 21st Century", ESO Astrophysical Symposia Series
Effective potential between two gluons from the scalar glueball
Creators: name: Buisseret, F.
name: Semay, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Starting from the $0^{++}$ glueball mass and wave function computed from lattice QCD, we compute the local potential between two constituent gluons. Since the properties of constituent gluons are still a matter of research, we allow for them to be either massless, or massive with a mass around 0.7 GeV. Both pictures are actually used in the literature. When the gluons are massless, the corresponding local potential is shown to be compatible with a Cornell form, that is a linear confinement plus a short-range Coulomb part, with standard values for the flux tube energy density and for the strong coupling constant. When the gluons are massive, the confining potential is a saturating one, commonly used to simulate string-breaking effects. These results fill a gap between lattice QCD and phenomenological models: The picture of the scalar glueball as a bound state of two constituent gluons interacting via a phenomenological potential is shown to emerge from pure gauge lattice QCD computations. Moreover, we show that the allowed potential shape is constrained by the mass of the constituent gluons.
description: 4 figures; Comments added, one typo corrected in v2. V3 accepted for publication in EPJA : major changes, content enlarged, inclusion of massive gluons
title: The American Samoa Longline Limited-entry Fishery  Annual Report 1 January–31 December 2023
Creators: name: Pacific Islands Fisheries Science Center (U.S.). Fisheries Research and Monitoring Division
Publisher: name: NOAA National Marine Fisheries Service Pacific Islands Fisheries Science Center
publisherIdentifier: https://ror.org/02apffz65
publisherIdentifierScheme: ROR
Year: 2024

description: PIFSC data report ; DR-24-18
description: Effort and catch statistics for the American Samoa longline limited-entry fishery reported by fishers on electronic and paper logs are summarized for 2023 (1 January–31 December; PIFSC, 2024). Catch and effort data are summarized for all fishing set types across all fishing locations performed by the American Samoa longline fleet during the reporting period. Total fishing effort for the fleet is summarized by the number of active vessels, trips, sets, and hooks set. Catch is summarized by the number of fish caught, kept, and released for the species included as pelagic management unit species (PMUS) for the Pacific Island Region as defined by the Western Pacific Fishery Management Council. The catch per unit effort (CPUE) is also summarized for each PMUS based on the number of fish caught per 1000 hooks.
Late Pleistocene hydrological settings at world heritage Tsodilo Hills (NW Kalahari, Botswana), a site of ancient human occupation
Creators: name: Geppert, Marielle
name: Riedel, Frank
name: Gummersbach, Venise S.
name: Gutjahr, Stine
name: Hoelzmann, Philipp
name: Reyes Garzón, Maria D.
name: Shemang, Elisha M.
name: Hartmann, Kai
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Palaeo-environment
subject: Palaeolake modelling
subject: Basin geomorphology
subject: Sediment proxies
subject: Relief inversion
subject: TanDEM-X
subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: Based on genetic studies, a Pleistocene Kalahari “palaeo-wetland”, which spanned the region of the Okavango Delta and the Makgadikgadi Basin, was recently considered the geographic origin of evolutionary modern humans. It was proposed that subsequent out-of-homeland migration was induced by climate shifts. The Tsodilo Hills, which are in relative proximity to the Okavango Delta, represent a site of ancient human occupation since at least 100 ka. Local hydrological dynamics were predominately controlled by climate variability and are archived in the sediments of Palaeolake Tsodilo. This study seeks to better understand the Late Pleistocene environments of the ancient Tsodilo people with a focus on palaeo-hydrological settings, which played a major role for their livelihoods. Our multidisciplinary approach included different remote sensing and geophysical methods, comprehensive application of differential GPS, and sedimentological analyses concentrating on the lake beds. Four palaeo-shorelines could be identified, three of which indicate highstands during which the Tamacha palaeo-river drained Palaeolake Tsodilo towards the Okavango Panhandle. Two highstands during MIS 3b and LGM are related to periods of largely increased fish consumption by humans as has been documented by archaeologists. The palaeolake was likely most extended about 100 ka ago or earlier, when it covered ca. 70 km2 and was 16 m deep. A single (neo-)tectonic fault could be detected. We assume that the Tamacha palaeo-river was a gateway for ancient humans to reach the Tsodilo Hills from these palaeo-wetlands. The people took advantage of the Tsodilo Hills as shelter from weather hazards and as a natural fortress against predators and elephants. Geologically, the Tsodilo Hills were comparatively calm. They represented a relatively safe haven where the social behaviour of early modern humans could evolve to a higher complexity, which relates to the fundamental question when and where modern human behaviour began.
Fortuna del romanzo Il figlio del cardinale di Ethel Lilian Voynich dal Novecento al Duemila. Ragioni della vasta popolarità in Russia e del suo insuccesso italiano.:
Creators: name: Gorburnova, Svetlana Alexandr (Σβετλάνα Γκορμπουνόβα)
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Σἰστρος
Ρωσικἠ Λογοτεχνἰα
Voynich
The Gadfly
Russian Literature

description: Στην παρούσα διπλωματική εργασία μελετήθηκε η τύχη του έργου The Gadfly (1897) της αγγλίδας συγγραφέως και συνθέτριας Ethel Lilian Voynich (Boole) (1864-1960). Το έργο της Voynich έχει μια πολύ ενδιαφέρουσα και πλούσια πολιτιστική ιστορία και επιθυμία μας είναι να διευρύνουμε τη φήμη και την τύχη αυτού του μυθιστορήματος. Το ζήτημα είναι ότι, ενώ το έργο τοποθετείται στην αναγεννησιακή Ιταλία (η δράση εκτυλίσσεται το 1833 και τα έτη 1846-1847), το μυθιστόρημα παρέμεινε σχεδόν άγνωστο στην Ιταλία μέχρι και σήμερα. Αντίθετα, είναι ευρέως γνωστό στη Ρωσία, την Κίνα, το Βιετνάμ και το Ιράν. Όπως συμπεραίνεται από τον τίτλο της εργασίας (Η τύχη του μυθιστορήματος The Gadfly της Ethel Lilian Voynich από το 19ο αι. έως τον 21 αι. Οι λόγοι της ευρείας αποδοχής του στη Ρωσία και της αποτυχίας του στην Ιταλία), στόχο μας αποτέλεσε η μελέτη της επιστημονικής βιβλιογραφίας, των κριτικών και των αφηγηματικών κειμένων που ασχολήθηκαν με το έργο αυτό ώστε να διασαφηνιστούν οι λόγοι για τους οποίους στη Ρωσία το μυθιστόρημα υπήρξε αδιαμφισβήτητα δημοφιλές ενώ στην Ιταλία στην ουσία αγνοήθηκε. Η έρευνά μας συνέβαλε στη διασαφήνιση δύο ζητημάτων με πολύ ενδιαφέρον που αφορούν: το πρώτο την πρόσληψη του έργου στην ΕΣΣΔ και στη Ρωσία, και το δεύτερο την πρόληψή του στην Ιταλία.
description: The purpose of this study is to investigate the popularity of the novel The Gadfly (1897) by English writer and composer Ethel Lilian Voynich (Boole) (1864 - 1960). Voynich’s work has a very interesting and rich cultural history and, taking this into account, we would like to increase the fame and fortune of this novel. The case in question in this novel is that, although the action is set in Italy in 1833 and from 1846 to 1847, in Italy during the period of the “Risorgimento” (which takes place in 1833 and from 1846 to 1847), the novel remained almost unknown in Italy until today, however, it is well known in Russia, China, Cuba, Vietnam and Iran. As the title of the paper insinuates (The popularity of the novel The Gadfly by Ethel Lilian Voynich from the 19th till the 21st century. Reasons of its immense success in Russia and of its failure in Italy), our aim is to study the scientific literature, critique and belles-lettres devoted to this work in order to understand why the novel was a great success in Russia while in Italy, it was practically ignored. Our research will help shed light on two areas worthy of interest that relate to: the reception of the novel in the USSR and Russia and to its reception in Italy.
Η εκπαίδευση για την πολιτότητα στην πρωτοβάθμια εκπαίδευση. Προτάσεις και σχεδιασμοί από φοιτητές παιδαγωγικών τμημάτων.:
Creators: name: Κωνσταντινίδου, Ζωή Ευθυμίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πολιτότητα
Ενεργός πολίτης
Αγωγή του πολίτη
Πρωτοβάθμια εκπαίδευση
Citizenship
Active citizen
Civic education
Primary education

description: Η προετοιμασία των μαθητών για το αξίωμα του πολίτη είναι ένας από τους κυριότερους ρόλους της εκπαίδευσης, η οποία θεωρείται θεωρείται ένας από τους πιο σημαντικούς φορείς για την πολιτική κοινωνικοποίηση και πολιτειακή εκπαίδευση των παιδιών. Οι πολίτες είναι η δύναμη της πολιτείας. Στη δημοκρατία όλοι έχουν ευθύνη για ό,τι συμβαίνει στη δημόσια σφαίρα και οφείλουν να είναι κατάλληλα προετοιμασμένοι για το ρόλο του πολίτη και δεσμευμένοι σ’ αυτόν. Το ερώτημα έγκειται στο αν το σηµερινή εκπαίδευση έχει την ετοιμότητα και την ικανότητα να διαμορφώσει ευαισθητοποιημένους και ενεργούς πολίτες. Στην παρούσα έρευνα 103 δραστηριότητες για την αγωγή του πολίτη σχεδιάστηκαν από μελλοντικούς εκπαιδευτικούς παιδαγωγικών σχολών (φοιτητές δημοτικής εκπαίδευσης Ν=54 και φοιτητές προσχολικής αγωγής Ν=49) και αναλύθηκαν. Ο μέσος όρος ηλικίας των φοιτητών ήταν τα 20.3 έτη. Από τα αποτελέσματα φαίνεται πως οι φοιτητές επιλέγουν δραστηριότητες σχετικές κυρίως με την περιβαλλοντική αγωγή και δημοκρατία και λίγότερο με τη διαπολιτισμικότητα. Φοιτητές μεγαλύτερων εξαμήνων χρησιμοποιούν περισσότερο μετρήσιμους στόχους και βιωματικές μεθόδους. Όσο αφορά τους φοιτητές δημοτικής εκπαίδευσης παρατηρείται πως επιλέγουν μεγάλες τάξεις για την υλοποίηση δραστηριοτήτων σχετικές με την πολιτότητα, ενώ οι φοιτητές προσχολικής αγωγής δείχνουν να σχεδιάζουν περισσότερο ολοκληρωμένες δραστηριότητες με χρήση ειδικών ρημάτων.
description: Preparing students for the office of citizen is one of the main roles of education, which is regarded as one of the most important players on the political socialization and civic education of children. Citizens are the power of the state. In democracy we all have responsibility for what happens in the public sphere and must be properly prepared for the role of the citizen and committed to this. The question is whether the current education has the readiness and the ability to shape conscious and active citizens. In this investigation 103 activities of prospective teachers pedagogical schools (elementary school students N = 54 preschool students and N = 49) were designed for civic education and analyzed. The average age of students was 20.3 years. The results show that students choose activities mainly related to environmental education and democracy and less on interculturalism. Students of larger semesters use more measurable objectives and experiential methods. As regards primary education students is observed that choose large classes to implement activities related to citizenship, while preschool education students show to plan more integrated activities using specific verbs.
title: Self-determined motivation for data-based decision-making
title: A relevance intervention in teacher training
titleType: Subtitle
Creators: name: Dübbers, Felix
name: Schmidt-Daffy, Martin
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Data-Based decision-making
subject: self-determination theory
subject: relevance intervention
subject: teacher training
subject: application intentions
subject: field experiment
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: While teachers’ core responsibility is to provide high-quality instruction, they are also expected to engage in data-based decision-making (DBDM), e.g., to analyse and use data to improve instruction. We developed a relevance intervention to promote student teachers' self-determined motivation and application intentions for DBDM and implemented it into a large compulsory university course. In a randomized controlled trial, participating students were either repeatedly prompted to reflect about the relevance of DBDM contents (relevance-condition) or asked to summarize DBDM contents (summary-condition). Students in the relevance-condition reported more self-determined forms of motivation, more autonomy-satisfaction, were more willing and self-confident to apply DBDM as teachers than students in the summary-condition. The intervention’s effect on application intentions was fully mediated by an increase in self-determined motivation. Students’ knowledge of DBDM could not be increased by the intervention. Implications for improving university educational training for student teachers are discussed.
Preacceleration without radiation: the non-existence of preradiation phenomenon
Creators: name: Heras, Jose A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: An unexpected prediction of classical electrodynamics is that a charge can accelerate before a force is applied. We would expect that a preaccelerated charge would radiate so that there would be spontaneous preradiation, an acausal phenomenon. We reexamine the subtle relation between the Larmor formula for the power radiated by a point charge and the Abraham-Lorentz equation and find that for well-behaved external forces acting for finite times, the charge does not radiate in time intervals where there is preacceleration. That is, for these forces preradiation does not exist even though the charge is preaccelerated. The radiative energy is emitted only in time intervals when the external force acts on the charge.
description: Equation (37) of the published paper in AJP has been corrected
Πώς βιώνουν οι νέοι θεραπευτές τον τερματισμό της θεραπείας : Μια ερμηνευτική φαινομενολογική ανάλυση:
Creators: name: Πανουργιά, Ουρανία Αλέξιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: τερματισμός
νέοι θεραπευτές
βίωμα
termination
novice therapists
experience

description: Η παρούσα έρευνα, με αφορμή το σχετικό κενό στη βιβλιογραφία, επιχείρησε να ρίξει φως στο πώς βιώνουν τον τερματισμό της θεραπείας οι νέοι θεραπευτές. Συμμετείχαν εννέα νέοι θεραπευτές διαφόρων προσεγγίσεων. Η συλλογή δεδομένων διεξήχθη με ημιδομημένες συνεντεύξεις και η ανάλυση έγινε με βάση τις αρχές της ερμηνευτικής φαινομενολογικής ανάλυσης. Από την ανάλυση προέκυψαν τρεις θεματικοί άξονες, με πολλά θέματα και επιμέρους θέματα, που απαρτίζουν την εμπειρία των νέων θεραπευτών σε σχέση με τον τερματισμό. Πρώτον, ο θεματικός άξονας «εδραιώνοντας την ταυτότητα του θεραπευτή μέσω του τέλους». Δεύτερον, ο θεματικός άξονας «νοηματοδοτώντας το τέλος». Τρίτον, ο θεματικός άξονας «βιώνοντας το τέλος». Στο κείμενο της ανάλυσης περιγράφεται η ποικιλομορφία των εμπειριών των συμμετεχόντων και αναδεικνύεται η πολυπλοκότητα του τερματισμού. Συζητούνται, επίσης, η χρησιμότητα της παρούσας έρευνας, καθώς και προτάσεις για μελλοντικές έρευνες.
description: Arisen from the gap of the relevant literature, the present study attempted to explore the way novice therapists experience the termination of therapy. The participants were nine novice therapists of different therapeutic approaches. Data collection was conducted through semi-structured interviews. Data analysis was carried through following the principles of interpretative phenomenological analysis (IPA). Three thematic axes emerged from the analysis, each of which including various themes and sub-themes, all these entities shedding light to the therapists’ experience of therapy termination: first, the axis “establishing therapists’ identity through the termination”, second the axis “assigning meaning to the termination” and third the axis “experiencing the termination”. Moreover, the analysis describes and emphasizes the diversity of the participants’ experiences and the complexity of the termination. Finally, the practicality of the present study and suggestions for future study are discussed.
The tropical $j$-invariant
Creators: name: Katz, Eric
name: Markwig, Hannah
name: Markwig, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H52; 51M20

description: If (Q,A) is a marked polygon with one interior point, then a general polynomial f in K[x,y] with support A defines an elliptic curve C on the toric surface X_A. If K has a non-archimedean valuation into the real numbers we can tropicalize C to get a tropical curve Trop(C). If the Newton subdivision induced by f is a triangulation, then Trop(C) will be a graph of genus one and we show that the lattice length of the cycle of that graph is the negative of the valuation of the j-invariant of C.
description: 15 pages
Dynamic critical exponents of Swendsen-Wang and Wolff algorithms by nonequilibrium relaxation
Creators: name: Du, Jianqing
name: Zheng, Bo
name: Wang, Jian-Sheng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: With a nonequilibrium relaxation method, we calculate the dynamic critical exponent z of the two-dimensional Ising model for the Swendsen-Wang and Wolff algorithms. We examine dynamic relaxation processes following a quench from a disordered or an ordered initial state to the critical temperature T_c, and measure the exponential relaxation time of the system energy. For the Swendsen-Wang algorithm with an ordered or a disordered initial state, and for the Wolff algorithm with an ordered initial state, the exponential relaxation time fits well to a logarithmic size dependence up to a lattice size L=8192. For the Wolff algorithm with a disordered initial state, we obtain an effective dynamic exponent z_exp=1.19(2) up to L=2048. For comparison, we also compute the effective dynamic exponents through the integrated correlation times. In addition, an exact result of the Swendsen-Wang dynamic spectrum of a one-dimension Ising chain is derived.
description: 13 pages, 6 figures
ARF GTPases and their ubiquitous role in intracellular trafficking beyond the Golgi
Creators: name: Adarska, Petia
name: Dilworth, Luis Wong
name: Bottanelli, Francesca
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Membrane trafficking
subject: Golgi
subject: adaptors
subject: Arf GTPase
subject: TGN
subject: Endosomes
subject: Clathrin
subject: COPI
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Molecular switches of the ADP-ribosylation factor (ARF) GTPase family coordinate intracellular trafficking at all sorting stations along the secretory pathway, from the ER-Golgi-intermediate compartment (ERGIC) to the plasma membrane (PM). Their GDP-GTP switch is essential to trigger numerous processes including membrane deformation, cargo sorting and recruitment of downstream coat proteins and effectors such as lipid modifying enzymes. While ARFs (in particular ARF1) had mainly been studied in the context of coat protein recruitment at the Golgi, COPI/clathrin independent roles have emerged in the last decade. Here we review the roles of human ARF1-5 GTPases in cellular trafficking with a particular emphasis on their roles in post-Golgi secretory trafficking and in sorting in the endo-lysosomal system.
Improving Performance Measurement for Texas Workforce Development Boards: Phase One Summary Report
Creators: name: King, Christopher T.
name: McPherson, Robert E.
name: O'Shea, Daniel P.
name: Tang, Ying
Publisher: name: Ray Marshall Center for the Study of Human Resources
Year: 2002
Subjects: Labor Market and Industry Studies
Workforce Development

description: In July 2001, the Workforce Leadership of Texas initiated a two-phase project on workforce performance measures, in partnership with the Ray Marshall Center for the Study of Human Resources at the University of Texas at Austin, the Texas Council on Workforce and Economic Competitiveness, and others. Phase One focused on assessed the existing measures that local Boards are accountable for, as well as on developing a set of recommended long-term system outcome and associated measures for piloting in selected areas.
Exact-exchange based quasiparticle energy calculations for the band gap, effective masses and deformation potentials of ScN
Creators: name: Qteish, Abdallah
name: Rinke, Patrick
name: Scheffler, Matthias
name: Neugebauer, Joerg
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The band gaps, longitudinal and transverse effective masses, and deformation potentials of ScN in the rock-salt structure have been calculated employing G0W0-quasiparticle calculations using exact-exchange Kohn-Sham density functional theory one-particle wavefunctions and energies as input. Our quasiparticle gaps support recent experimental observations that ScN has a much lower indirect band gap than previously thought. The results are analyzed in terms of the influence of different approximations for exchange and correlation taken in the computational approach on the electronic structure of ScN.
description: Comments: 9 pages including 5 figures; related publications can be found at http://www.fhi-berlin.mpg.de/th/th.html
Συνεισφορά των οργανικών σωματιδίων στην σωματιδιακή ρύπανση στην περιοχής της Ελλάδος με βάση τα αποτελέσματα φωτοχημικού μοντέλου:
Creators: name: Σεμερτζίδου, Ελένη Ευσταθίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Οργανικά
Συνεισφορά
Ελλάδα
Organic
Contribution
Greece

description: Στα πλαίσια του μεταπτυχιακού προγράμματος σπουδών, μου ανατέθηκε η εκπόνηση της διπλωματικής εργασίας με τίτλο «Συνεισφορά των οργανικών σωματιδίων στην σωματιδιακή ρύπανση στην περιοχής της Ελλάδος με βάση τα αποτελέσματα φωτοχημικού μοντέλου». Σκοπός της μελέτης αυτής ήταν η εξέταση των αιωρούμενων σωματιδίων και ειδικότερα η συνεισφορά των οργανικών σωματιδίων στην σωματιδιακή ρύπανση στην περιοχής της Ελλάδος με βάση τα αποτελέσματα φωτοχημικού μοντέλου. Για το λόγο αυτό ασχοληθήκαμε με τα αιωρούμενα σωματίδια, την κατηγοριοποίηση αυτών, τους μηχανισμούς παραγωγής τους, τις φυσικές διεργασίες που εμπλέκονται και τους μηχανισμούς απομάκρυνσης τους από την ατμόσφαιρα και με τα οργανικά σωματίδια και συγκεκριμένα τις κατηγορίες αυτών, τα πρωτογενή οργανικά αεροζόλ και τα δευτερογενή οργανικά αεροζόλ. Στην συνέχεια, περιγράψαμε το φωτοχημικό μοντέλο που χρησιμοποιήσαμε και παρουσιάσαμε τόσο τα αποτελέσματα του για τα λεπτά σωματίδια με διάμετρο μικρότερη των δυόμιση μικρομέτρων όσο και την συνεισφορά των οργανικών ενώσεων στις μέσες συγκεντρώσεις αυτών. Ακόμη ασχοληθήκαμε με τον διαχωρισμό των οργανικών σωματιδίων βάση της πρωτογενούς και δευτερογενούς προέλευσης τους και με την συνεισφορά των πρωτογενών και δευτερογενών οργανικών σωματιδίων στις συνολικές συγκεντρώσεις οργανικών σωματιδίων σε διαφορετικά είδη σταθμών (αγροτικούς, περιαστικούς, βιομηχανικούς και αστικούς) στην περιοχή της Ελλάδας.
description: As part of my graduate program, I was responsible for preparing my dissertations entitled "Contribution of organic particles in particulate pollution in the region of Greece based on photochemical model results." The purpose of this study was to examine the suspended particles and especially the contribution of organic particles in particulate pollution in the region of Greece based on photochemical model results. For this reason we dealt with, suspended particles, we categorized them, we study the mechanisms of their production, the physical processes which they involved and the mechanisms of their removal from the atmosphere, and with organic particles and especially those categories as primary organic aerosols and secondary organic aerosols. Then in this dissertation we described the photochemical model that we used and we presented both the results of fine particles with a diameter less than two point five micron meter and the contribution of organic compounds in average concentrations. We also dealt with the separation of organic particles based on primary and secondary organic aerosol and the contribution of primary and secondary organic particles to the total concentrations of organic particles in different types of channels (rural, peri-urban, urban and industrial) in Greece.
Comment on 'A generalized Helmholtz theorem for time-varying vector fields by A. M. Davis, [Am. J. Phys. 74, 72-76 (2006)]'
Creators: name: Heras, Jose A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In a recent paper Davis formulated a generalized Helmholtz theorem for a time-varying vector field in terms of the Lorenz gauge retarded potentials. The purposes of this comment are to point out that Davis's generalization of the theorem is a version of the extension of the Helmholtz theorem formulated some years ago by McQuistan and also by Jefimenko and more recently by the present author and to show that Davis's expression for the time-dependent vector field is also valid for potentials in gauges other than the Lorenz gaug
Adiabatic quantum pumping in an Aharonov-Bohm loop and in a Si-like nanowire: Role of interference in real space and in momentum space
Creators: name: Kim, Sungjun
name: Das, Kunal K.
name: Mizel, Ari
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the consequences of interference effects on the current generated by adiabatic quantum pumping in two distinct one-dimensional (1D) lattice model. The first model contains an Aharonov-Bohm (AB) loop within a tight-binding chain of lattice sites. The static AB phase is shown to strongly affect interference between the two arms of the loop, serving as an on-off switch and regulator for the pumped current. The second model simulates pumping in semiconductors with indirect band-gaps, by utilizing a tight-binding chain with next-nearest-neighbor coupling. The model exhibits signatures of interference between degenerate conduction band states with different Fermi wavevectors.
description: 7 pages, 7 figures
Active Galactic Nuclei at the Crossroads of Astrophysics
Creators: name: Lobanov, Andrei P.
name: Zensus, J. Anton
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Over the last five decades, AGN studies have produced a number of spectacular examples of synergies and multifaceted approaches in astrophysics. The field of AGN research now spans the entire spectral range and covers more than twelve orders of magnitude in the spatial and temporal domains. The next generation of astrophysical facilities will open up new possibilities for AGN studies, especially in the areas of high-resolution and high-fidelity imaging and spectroscopy of nuclear regions in the X-ray, optical, and radio bands. These studies will address in detail a number of critical issues in AGN research such as processes in the immediate vicinity of supermassive black holes, physical conditions of broad-line and narrow-line regions, formation and evolution of accretion disks and relativistic outflows, and the connection between nuclear activity and galaxy evolution.
description: 16 pages, 5 figures; review contribution; "Exploring the Cosmic Frontier: Astrophysical Instruments for the 21st Century", ESO Astrophysical Symposia Series
Kernel Theorems in Spaces of Tempered Generalized Functions
Creators: name: Delcroix, Antoine
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 45P05; 46F05; 46F30; 47G10

description: In analogy to the classical isomorphism between $\mathcal{L}(\mathcal{S}(\mathbb{R}^{n}) ,\mathcal{S}^{\prime}(\mathbb{R}^{m}) ) $ and $\mathcal{S}^{\prime}(\mathbb{R}^{n+m}) $, we show that a large class of moderate linear mappings acting between the space $\mathcal{G}\_{\mathcal{S}}(\mathbb{R}^{n}) $ of Colombeau rapidly decreasing generalized functions and the space $\mathcal{G}\_τ(\mathbb{R}^{n}) $ of temperate ones admits generalized integral representations, with kernels belonging to $\mathcal{G}\_τ(\mathbb{R}^{n+m}) $. Furthermore, this result contains the classical one in the sense of the generalized distribution equality.
description: 15 pages
Προσομοίωση τροχιών στο πεδίο βαρύτητας του αστεροειδή 433 Έρως.:
Creators: name: Δασκαλάκης, Ελευθέριος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Προσομοίωση
Αστεροειδής
Τροχιά
Simulation
Asteroid
Orbit

description: Στον τομέα της ουράνιας Μηχανικής όσον αφορά στον υπολογισμό του δυναμικού βαρύτητας, ενός ουράνιου σώματος, η πιο διαδεδομένη μέθοδος που χρησιμοποιείται είναι η προσέγγιση με σφαιρικές αρμονικές. Σκοπός αυτής της διατριβής είναι να δείξουμε ότι σε περιπτώσεις όπου το σχήμα του ουράνιου σώματος είναι αυθαίρετο, έτσι ώστε να έχουμε έντονη ανομοιομορφία στην κατανομή της μάζας του, είναι προτιμότερο, μιλώντας σε υπολογιστικούς όρους, να χρησιμοποιηθούν άλλες προσεγγιστικές μέθοδοι. Σε αυτήν την εργασία θα εξεταστεί μία παραλλαγή μιας μεθόδου η οποία είναι γνωστή ως "mascons" εκ του Mass concentration ή αλλιώς συμπύκνωσης μάζας. Η εφαρμογή της μεθόδου έγινε στο πραγματικό υπολογιστικό μοντέλο του αστεροειδή 433 Έρως, που πληρεί τις προϋποθέσεις αυθαίρετου σχήματος. Στη συνέχεια με χρήση της μεθόδου υπολογίστηκαν ευσταθείς τροχιές διαστημικού σκάφους, γύρω από τον αστεροειδή.
description: In the field of celestial mechanics in terms of calculating the gravitational potential of a celestial body, the most common method used is the spherical harmonic approach. The purpose of this thesis is to show that in cases where the shape of the celestial body is arbitrary, so that we have a strong heterogeneity in the distribution of mass, it is preferable, speaking in computational terms, to use other approximate methods. In this work we will consider a variation of a method which is known as "mascons" (Mass concentration). This method was applied to the actual computational model of the asteroid 433 Eros, which satisfies the conditions of arbitrary shape. Then, using the method, stable trajectories of an orbiting spacecraft, around the asteroid, were calculated.
Αποτίμηση μιας μη εισηγμένης τουριστικής επιχείρησης:
Creators: name: Καραμπούζης, Αθανάσιος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: αποτίμηση
τουρισμός
μοντέλα προεξόφλησης
valuation
tourism
discounting models

description: Η παρούσα εργασία έχει ως κύριο σκοπό την παράθεση και κατηγοριοποίηση των μοντέλων αποτίμησης και την κατάδειξη της εφαρμογή τους στον τομέα του τουρισμού στην Ελλάδα, για τις περιπτώσεις μη εισηγμένων επιχειρήσεων. Την πλήρη εξειδίκευση αυτή την επιβάλλουν οι ιδιαιτερότητες κάθε κλάδου, καθώς και τα μακροοικονομικά στοιχεία κάθε χώρας, που διαφοροποιούν επιχειρήσεις ιδίων κλάδων ακόμα και σε γειτονικές χώρες, όσες ομοιότητες κι αν παρουσιάζουν. Στο τελευταίο κεφάλαιο, επιχειρείται μια απόπειρα αποτίμησης μιας ξενοδοχειακής επιχείρησης μη εισηγμένης στο ΧΑΑ, της οποίας τα περισσότερα στοιχεία υπολογίζονται pro forma, θεωρώντας ότι ακολουθεί τα οικονομικά στοιχεία του κλάδου του ΧΑΑ «Ταξίδια και Αναψυχή.
description: The present thesis has as main purpose the quote and categorization of valuation models and demonstration of their application upon the touristic sector of the Greek economy, as far as private companies are concerned. This kind of analysis is imposed by the particularities of each sector and the macroeconomic data of each country, which differentiate firms of the same branch, even located in neighboring countries, no matter how many similarities they may show. The last chapter of the thesis consists of an attempt to valuate a private hotel business, of which most data are calculated pro forma, assuming that they follow the financial industry figures of the Athens Stock Exchange branch "Travel and Leisure”.
Instantaneous fields in classical electrodynamics
Creators: name: Heras, Jose A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper we express the retarded fields of Maxwell's theory in terms of the instantaneous fields of a Galilei-invariant electromagnetic and we find the vector function whose spatial and temporal derivatives transform the instantaneous fields into the retarded ones. We conclude that the instantaneous fields can formally be introduced as unphysical objects into classical electrodynamics which can be used to find the physical retarded fields.
description: A minor correction is made in the abstract of the version published in Europhys. Letts
Η επίδραση της νοσταλγικής διαφήμισης στους νέους:
Creators: name: Ματαπά, Ευανθία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Νοσταλγία
Νοσταλγική τάση
Διαφήμιση
Nostalgia
Nostalgia proneness
Advertising

description: Ιδιαίτερα διαδεδομένο φαινόμενο της εποχής που διανύουμε, είναι η επανέκδοση και επανεμφάνιση προϊόντων, τα οποία παραπέμπουν σε παλαιότερα ή παρουσιάζουν κοινά χαρακτηριστικά με αυτά, με στόχο την πρόκληση νοσταλγικών συναισθημάτων στους καταναλωτές, προκειμένου αυτοί να οδηγηθούν κατά συνέπεια στην αγορά του διαφημιζόμενου προϊόντος. Σκοπός της παρούσης διπλωματικής εργασίας, είναι η διερεύνηση της επίδρασης που έχει η νοσταλγική διαφήμιση στους νέους, και συγκεκριμένα, η μελέτη της επίδρασης της νοσταλγικής τάσης του ατόμου, στη διαμόρφωση της στάσης του απέναντι σε μια νοσταλγική και μη νοσταλγική διαφήμιση, απέναντι στην εκάστοτε διαφημιζόμενη μάρκα και στην πρόθεση αγοράς από μέρους του καταναλωτή. Για το σκοπό αυτό, πραγματοποιήθηκε σε πρώτο στάδιο, εκτενής ανάλυση της σχετικής βιβλιογραφίας, ενώ ακολούθησε η ανάλυση των δεδομένων που συλλέχθηκαν με τη βοήθεια του στατιστικού προγράμματος SPSS, έως τη διεξαγωγή και συζήτηση των συμπερασμάτων της έρευνας, έπειτα και από τον στατιστικό έλεγχο των ερευνητικών μας υποθέσεων.
description: Α widespread phenomenon of our era, is the re-issue and re-emergence of products, which refer to others that have been produced and appeared in the past, or that have common characteristics with them. The aim of this trend in marketing fields is to challenge the nostalgic feelings off consumers, so that they are finally led to the purchase of the advertised product. The purpose of this thesis is to investigate the influence of nostalgic advertising on young people, and to be more specific, to study the effect of nostalgic proneness of an individual in shaping his/her attitude toward nostalgic and non-nostalgic advertising. An extensive analysis of the relevant literature was initially performed, followed by an online survey of nostalgia and its effects on attitude towards the ad. The results indicate that the notion of nostalgia does not have a significant effect on the attitude of younger people.
Performance modelling and evaluation of protocols based on formal specifications
Creators: name: Zhang, Sijian
Publisher: name: University of British Columbia
Year: 2009

description: Protocol performance issues are important in communication protocol design and network management, especially for those protocols which run in high-speed networking environments. An accurate performance modelling and evaluation approach is necessary to obtain reliable performance estimations and to improve system performance. Using queueing models (QMs) or finite state machines (FSMs) alone is difficult to achieve this goal because many aspects that affect performance are not taken into consideration by the model. This thesis proposes a new performance model called performance extended finite state machine (PEFSM). PEFSM makes use of the strengths of both QM and FSM. A PEFSM is based on an FSM which is extended to include time and probability. Furthermore, the transition time is refined and divided into two parts: the transition wait time and the transition service time. This allows the PEFSMs to integrate message arrival and queueing models which provide useful and essential information necessary for studying real world protocols. PEFSMs are classified into three categories based on the message arrival characteristics: synchronous PEFSMs (SyPEFSMs), asynchronous PEFSMs (AsPEF SMs) and hybrid PEFSMs (HyPEFSMs). While the hybrid model is the most useful and realistic model for communication protocols, the other two models are also presented for completeness, and as a way to explain the hybrid model. A method for computing performance metrics based on SyPEFSMs is given in the thesis. Two types of AsPEFSMs — AsPEFSM-α and AsPEFSM-β — and their performance evaluation methods are also presented. Then a class of HyPEFSM which is a hybrid model of SyPEFSM and AsPEFSM-α is introduced. The proposed performance evaluation method for this class of HyPEFSM is basically the combination of those for SyPEFSMs and AsPEFSM-αs. Our performance mod effing and evaluation approach has been applied to various examples, including the alternating bit protocol and multi-stage interconnection network (MIN). The performance evaluation method for PEFSMs makes use of stochastic pro cess and queueing theory. A new queueing property for an M/G/1. with multiple job classes and an analogous property for AsPEFSM-os have been discovered and proved. As a first step in improving system performance, the thesis defines software performance bottlenecks based on PEFSMs. Two bottleneck identification methods are proposed and tested. This thesis also proposes a testing method called t-test which in most cases is able to obtain the service times of invisible transitions when the protocol implementation under test is given as a black box. Transition service times are important parameters in FSM-based performance models. Studies in the past have usually assumed the transition times to be known a priori without discussing how they may be obtained. Simulations and measurement experiments have been conducted to validate the methodologies proposed in this thesis. The results are quite promising.
Deep FORS1 observations of the double Main Sequence of omega Centauri
Creators: name: Sollima, A.
name: Ferraro, F. R.
name: Bellazzini, M.
name: Origlia, L.
name: Straniero, O.
name: Pancino, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a deep photometric survey performed with FORS1@VLT aimed at investigating the complex Main Sequence structure of the stellar system omega Centauri. We confirm the presence of a double Main Sequence and identify its blue component (bMS) over a large field of view up to 26' from the cluster center. We found that bMS stars are significantly more concentrated toward the cluster center than the other "normal" MS stars. The bMS morphology and its position in the CMD have been used to constrain the helium overabundance required to explain the observed MS morphology.
description: 15 pages, 10 figures, accepted for publication by ApJ