cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of Correlated Noise on the Performance of Persistence Based Dynamic State Detection Methods
Creators: name: Tempelman, Joshua
name: Myers, Audun
name: Scruggs, Jeffrey
name: Khasawneh, Firas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The ability to characterize the state of dynamic systems has been a pertinent task in the time series analysis community. Traditional measures such as Lyapunov exponents are often times difficult to recover from noisy data, especially if the dimensionality of the system is not known. More recent binary and network based testing methods have delivered promising results for unknown deterministic systems, however noise injected into a periodic signal leads to false positives. Recently, we showed the advantage of using persistent homology as a tool for achieving dynamic state detection for systems with no known model and showed its robustness to white Gaussian noise. In this work, we explore the robustness of the persistence based methods to the influence of colored noise and show that colored noise processes of the form $1/f^α$ lead to false positive diagnostic at lower signal to noise ratios for $α<0$.
Computation of a combined spherical-elastic and viscous-half-space earth model for ice sheet simulation
Creators: name: Bueler, Ed
name: Lingle, Craig S.
name: Kallen-Brown, Jed A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: This report starts by describing the continuum model used by Lingle & Clark (1985) to approximate the deformation of the earth under changing ice sheet and ocean loads. That source considers a single ice stream, but we apply their underlying model to continent-scale ice sheet simulation. Their model combines Farrell's (1972) elastic spherical earth with a viscous half-space overlain by an elastic plate lithosphere. The latter half-space model is derivable from calculations by Cathles (1975). For the elastic spherical earth we use Farrell's tabulated Green's function, as do Lingle & Clark. For the half-space model, however, we propose and implement a significantly faster numerical strategy, a spectral collocation method (Trefethen 2000) based directly on the Fast Fourier Transform. To verify this method we compare to an integral formula for a disc load. To compare earth models we build an accumulation history from a growing similarity solution from (Bueler, et al.~2005) and and simulate the coupled (ice flow)-(earth deformation) system. In the case of simple isostasy the exact solution to this system is known. We demonstrate that the magnitudes of numerical errors made in approximating the ice-earth system are significantly smaller than pairwise differences between several earth models, namely, simple isostasy, the current standard model used in ice sheet simulation (Greve 2001, Hagdorn 2003, Zweck & Huybrechts 2005), and the Lingle & Clark model. Therefore further efforts to validate different earth models used in ice sheet simulations are, not surprisingly, worthwhile.
description: 36 pages, 16 figures, 3 Matlab programs
Universal and nonuniversal contributions to block-block entanglement in many-fermion systems
Creators: name: Franca, Vivian V.
name: Capelle, Klaus
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate the entanglement entropy of blocks of size x embedded in a larger system of size L, by means of a combination of analytical and numerical techniques. The complete entanglement entropy in this case is a sum of three terms. One is a universal x and L-dependent term, first predicted by Calabrese and Cardy, the second is a nonuniversal term arising from the thermodynamic limit, and the third is a finite size correction. We give an explicit expression for the second, nonuniversal, term for the one-dimensional Hubbard model, and numerically assess the importance of all three contributions by comparing to the entropy obtained from fully numerical diagonalization of the many-body Hamiltonian. We find that finite-size corrections are very small. The universal Calabrese-Cardy term is equally small for small blocks, but becomes larger for x>1. In all investigated situations, however, the by far dominating contribution is the nonuniversal term steming from the thermodynamic limit.
description: 6 pages, 3 figures
Η νοσταλγία στο μάρκετινγκ και η επίδραση της στη διαμόρφωση των μουσικών προτιμήσεων και της πρόθεσης αγοράς:
Creators: name: Δημητρίου, Ελένη Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: νοσταλγία
μουσικές προτιμήσεις
πρόθεση αγοράς
nostalgia
music preference
purchase intention

description: Η παρούσα εργασία επιχειρεί να μελετήσει το φαινόμενο της νοσταλγίας, συγκεκριμένα στο πεδίο του μάρκετινγκ, και πως αυτό σχετίζεται με τη διαμόρφωση των μουσικών προτιμήσεων και κατ’ επέκταση της πρόθεσης αγοράς προκειμένου να επιτευχθεί μια ολοκληρωμένη καταναλωτική εμπειρία. Για το σκοπό αυτό, καταρτίστηκε ένα ηλεκτρονικό ερωτηματολόγιο προκειμένου να διαπιστωθεί η αξιοπιστία της κλίμακας νοσταλγίας Holbrook (1990, 1993), να επιβεβαιωθεί παλαιότερο εύρημα των Holbrook & Schindler πως οι μουσικές προτιμήσεις διαμορφώνονται κατά τη διάρκεια της εφηβείας, και της πρώιμης ενηλικίωσης, μέσω της αξιολόγησης μιας λίστας ροκ κομματιών που χρονολογούνται από το 1965 έως το 2011, και να αποκαλυφθούν τυχόν συσχετίσεις της ροπής προς νοσταλγία και της μουσικής προτίμησης με την πρόθεση αγοράς ενός νοσταλγικού προϊόντος έναντι του αντίστοιχου σύγχρονου του. Η ανάλυση των αποτελεσμάτων, αν και δεν επιβεβαιώνει απόλυτα τις αρχικές υποθέσεις της έρευνας, εν τούτοις διαπιστώνει την αυξημένη ροπή προς νοσταλγία και την ταυτόχρονη ανάγκη για την δημιουργία ενός αξιόπιστου και κοινώς αποδεκτού δείκτη νοσταλγίας, φανερώνει την ξεκάθαρη προτίμηση για τη ροκ μουσική του παρελθόντος και καταδεικνύει τη σημασία σύνδεσης των παραπάνω με την αγορά σχετικών προϊόντων, που είναι και ο βασικός στόχος του μάρκετινγκ αλλά και η κύρια συνεισφορά της έρευνας.
description: The present thesis attempts to examine the phenomenon of nostalgia, precisely in the field of marketing, and the ways with which it is related with the conformation of the music preferences and, by extension, with the purchase intension, so as an integrated consumption experience to be accomplished. For this purpose, a questioner was compiled in order to ascertain the validity of Holbrook’s Nostalgia Index (1990, 1993), confirm, through the evaluation of the ratings of a list consisting of rock songs dated from 1965 to 2011, previous findings of Holbrook & Schindler, stating that the music preferences are formed during adolescence and early adulthood, and reveal possible correlations between nostalgia proneness and music preference with the purchase intension of a nostalgic product versus a respective contemporary one. The analysis of the results, even though it does not utterly confirm the initial hypothesis of the research, it nevertheless shows an increasing proneness to nostalgia and the coincidental need for a reliable and commonly acceptable nostalgia index, it displays a clear preference for the rock music of the past and indicates the importance of the linkage of all the above with the actual purchase of a relative product, which is not only the principal goal of marketing but also the main contribution of the research.
On Store Languages and Applications
Creators: name: Ibarra, Oscar H.
name: McQuillan, Ian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: The store language of a machine of some arbitrary type is the set of all store configurations (state plus store contents but not the input) that can appear in an accepting computation. New algorithms and characterizations of store languages are obtained, such as the result that any nondeterministic pushdown automaton augmented with reversal-bounded counters, where the pushdown can "flip" its contents up to a bounded number of times, can be accepted by a machine with only reversal-bounded counters. Then, connections are made between store languages and several model checking and reachability problems, such as accepting the set of all predecessor and successor configurations from a given set of configurations, and determining whether there are at least one, or infinitely many, common configurations between accepting computations of two machines. These are explored for a variety of different machine models often containing multiple parallel data stores. Many of the machine models studied can accept the set of predecessor configurations (of a regular set of configurations), the set of successor configurations, and the set of common configurations between two machines, with a machine model that is simpler than itself, with a decidable emptiness, infiniteness, and disjointness property. Store languages are key to showing these properties.
Grid enabled virtual screening against malaria
Creators: name: Jacq, N.
name: Salzemann, J.
name: Jacq, F.
name: Legré, Y.
name: Medernach, E.
name: Montagnat, J.
name: Maass, A.
name: Reichstadt, M.
name: Schwichtenberg, H.
name: Sridhar, M.
name: Kasam, V.
name: Zimmermann, M.
name: Hofmann, M.
name: Breton, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: WISDOM is an international initiative to enable a virtual screening pipeline on a grid infrastructure. Its first attempt was to deploy large scale in silico docking on a public grid infrastructure. Protein-ligand docking is about computing the binding energy of a protein target to a library of potential drugs using a scoring algorithm. Previous deployments were either limited to one cluster, to grids of clusters in the tightly protected environment of a pharmaceutical laboratory or to pervasive grids. The first large scale docking experiment ran on the EGEE grid production service from 11 July 2005 to 19 August 2005 against targets relevant to research on malaria and saw over 41 million compounds docked for the equivalent of 80 years of CPU time. Up to 1,700 computers were simultaneously used in 15 countries around the world. Issues related to the deployment and the monitoring of the in silico docking experiment as well as experience with grid operation and services are reported in the paper. The main problem encountered for such a large scale deployment was the grid infrastructure stability. Although the overall success rate was above 80%, a lot of monitoring and supervision was still required at the application level to resubmit the jobs that failed. But the experiment demonstrated how grid infrastructures have a tremendous capacity to mobilize very large CPU resources for well targeted goals during a significant period of time. This success leads to a second computing challenge targeting Avian Flu neuraminidase N1.
description: 34 pages, 5 figures, 3 tables, to appear in Journal of Grid Computing
Ruthenium(II) Complexes of 2-Pyridylphosphines: Coordination Modes, Reactivity with Small Molecules, and Aqueous Chemistry
Creators: name: Schutte, Richard Peter
Publisher: name: University of British Columbia
Year: 2009

description: Several ruthenium(II) 2-pyridylphosphine PPh3-[sub x]py[sub x] (PN[sub x], where x = 1, 2, 3 and Ph = phenyl group, py = 2-pyridyl group) complexes were synthesized and characterized. The use of the 2-pyridylphosphines was prompted by the potential of forming water soluble complexes, for use in olefin hydration catalysis (i.e., adding H₂O across a carboncarbon double bond). With ruthenium, the PN[sub x] ligands exhibited a variety of coordination modes, including coordination through the phosphorus only (P), the phosphorus and one pyridyl group (P,N), the phosphorus and two pyridyl groups (P,N,N'; PN₂ and PN₃ only), and through three pyridyl groups (N,N',N''; PN₃ only). Complexes synthesized were characterized in general by a combination of ³¹P{¹1H} NMR, ¹H NMR, IR, and UV-visible spectroscopies, as well as conductivity and elemental analysis, while four complexes were also characterized by X-ray crystallography. [. . . abstract continues]
Κάτω Άγιος Ιωάννης Πιερίας «Κεραμική από τον λάκκο 1 και 2 του αγροτεμαχίου 174»:
Creators: name: Καρανίκα, Μαρία Στέφανου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Κεραμική
Νεότερη Νεολιθική
Πιερία
Pottery
Late Neolithic
Pieria

description: Στην εργασία παρουσιάζονται τα αποτελέσματα της μελέτης της κεραμικής του λάκκου 1 και 2 από το αγροτεμάχιο 174 του Κάτω Αγίου Ιωάννη Πιερίας. Πρόκειται για κεραμική της Νεότερης Νεολιθικής Ι, για την οποία έγινε λόγος σχετικά με την τυπολογία, τα σχήματα, τα μορφολογικά χαρακτηριστικά, την κεραμική ύλη, τα εγκλείσματα, τους τύπους διακόσμησης και ό,τι καταγράφηκε μέσω της μακροσκοπικής έρευνας. Έγινε προσπάθεια ένταξης της κεραμικής σε ένα γενικότερο πλαίσιο αναφοράς και συσχετίστηκε με αντίστοιχη σύγχρονων θέσεων, όπως του Μακρύγιαλου Ι, της Σταυρούπολης και της Θέρμης.
description: This master presents the results of the research of the pottery from the pit 1 and 2 of the parcel 174, in Agios Ioannis of Pieria. The pottery is dated in the Late Neolithic I and was made reference to the typology, the shapes, the morphological characteristics, the fabric, the inclusions, the types of decoration and everything else that has to deal with the macroscopical research. This pottery was placed in a more general context and was combined with pottery from other contepmorary positions, such as Makryialos I, Stauroupoli and Thermi.
Humidity's influence on visible region refractive index structure parameter $C_n^2$
Creators: name: Chang, Mark P. J. L.
name: Font, Carlos O.
name: Gilbreath, G. Charmaine
name: Oh, Eun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In the infrared and visible bandpass, optical propagation theory conventionally assumes that humidity does not contribute to the effects of atmospheric turbulence on optical beams. While this assumption may be reasonable for dry locations, we demonstrate in this paper that there is an unequivocal effect due to the pre sence of humidity upon the strength of turbulence parameter, $C_n^2$, from data collected in the Chesapeake Bay area over 100-m length horizontal propagation paths. We describe and apply a novel technique, Hilbert Phase Analysis, to the relative humidity, temperature and $C_n^2$ data to show the contribution of the re levant climate variable to $C_n^2$ as a function of time.
description: 16 pages, 7 figures, 2 tables, submitted to Applied Optics
Απόψεις εκπαιδευτικών πρωτοβάθμιας και δευτεροβάθμιας εκπαίδευσης για την αξιολόγηση του έργου τους: ερευνητικές διαπιστώσεις.
Creators: name: Κελπανίδης, Μιχάλης Χαρ.
name: Αντωνιάδη, Φωτιάνα
name: Παπαδοπούλου, Σοφία
name: Ποιμενίδου, Δέσποινα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The paper presentsed probes into recent research data concerning teach- ersthe educators’ opinionsperceptions about the controversial institutional¬ization of a system of teacher evaluation of their work in Greeceour coun¬try. The research was carried out in January 2005 byfrom a groupthe of post¬graduate students of the Department of Education of the Aristotle University of Thessaloniki under the guidance of Prof. Kelpanides. The sample included 461 educators from primary and secondary school teach- erss in Eastern, Central and Western Thessalonikcia and inas well as Eastern (Greek) Macedonia. Data were collected using a written question¬naire comprising a wide range of questions concerning evaluation. Among the general findings of the research project was the finding that two thirds of the respondents approve the institutionalization of a system of teacher evaluation but express reservations concerning the modalities of the evalu¬ation procedure.
description: Παιδαγωγική Επιθεώρηση, Vol. 44 (2007)
Effect of Elasticity of Shafts, Bearings, Casing and Couplings on the Critical Rotational Speeds of a Gearbox
Creators: name: Rigaud, Emmanuel
name: Sabot, Jean
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The aim of this study is to analyse the influence of the mechanical characteristics of the set of components on the critical rotational speeds of a gearbox. The case of a gearbox fitted out with a helical gear pair was considered. The shafts and the casing were discretised using the finite element method. The elastic coupling between the toothed wheels was characterised by a 12 x12 stiffness matrix. The bearings were modelled using radial, axial and rotational stiffness elements. The calculation of the vibration response induced by the static transmission error showed that the highest dynamic mesh forces correspond to a resonant excitation of modes which have a high potential energy associated with the mesh stiffness. The numerical simulations performed showed that a realistic prediction of the critical rotational speeds should take account of all the components of the gearbox.
Relationship between the DC Bias and Debye Length in a Complex Plasma
Creators: name: Kong, Jie
name: Reyes, Jorge C.
name: Creel, James
name: Hyde, Truell
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The levitation height of a dust particle layer within a RF discharge plasma sheath is known to be related to the DC bias, the background pressure, and the Debye length. In this paper, a new experimental technique for measurement of the Debye length is introduced. This technique is based on the relationship between an externally applied DC bias and the particle levitation height and shows that under appropriate conditions, the addition of an externally applied DC bias provides a mechanism for evaluation of the Debye length. When compared with existing techniques, this new method appears to be simpler to implement in some cases.
UOCS. V. UV study of the old open cluster NGC 188 using AstroSat
Creators: name: Rani, Sharmila
name: Subramaniam, Annapurni
name: Pandey, Sindhu
name: Sahu, Snehalata
name: Mondal, Chayan
name: Pandey, Gajendra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the UV photometry of the old open cluster NGC188 obtained using images acquired with Ultraviolet Imaging Telescope (UVIT) on board the ASTROSAT satellite, in two far-UV (FUV) and one near-UV (NUV) filters. UVIT data is utilised in combination with optical photometric data to construct the optical and UV colour-magnitude diagrams (CMDs). In the FUV images, we detect only hot and bright blue straggler stars (BSSs), one hot subdwarf, and one white dwarf (WD) candidate. In the NUV images, we detect members up to a faintness limit of ~22 mag including 21 BSSs, 2 yellow straggler stars (YSSs), and one WD candidate. This study presents the first NUV-optical CMDs, and are overlaid with updated BaSTI-IAC isochrones and WD cooling sequence, which are found to fit well to the observed CMDs. We use spectral energy distribution (SED) fitting to estimate the effective temperatures, radii, and luminosities of the UV-bright stars. We find the cluster to have an HB population with three stars (Teff = 4750 - 21000 K). We also detect two yellow straggler stars, with one of them with UV excess connected to its binarity and X-ray emission.
description: 11 pages, 7 figures, 3 tables, Accepted for publication in Journal of Astrophysics and Astronomy
Αναπαραστάσεις των κοινωνικά αποκλεισμένων ομάδων στα παιδικά μυθιστορήματα της δεκαετίας 2004- 2014.:
Creators: name: Χριστοδούλου, Ιλια Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Κοινωνικός αποκλεισμός
Παιδικό μυθιστόρημα
Πολιτισμική εικονολογία
Social exclusion
Children’ s novels
Imagologie.

description: Η εργασία αυτή έχει ως βασικό στόχο να αποτυπώσει τις αναπαραστάσεις των κοινωνικά αποκλεισμένων ομάδων και συγκεκριμένα των Ρομά, των παλιννοστούντων, των μελών της μουσουλμανικής μειονότητας και των οικονομικών μεταναστών στα παιδικά μυθιστορήματα. Ως πλαίσιο μελέτης επιλέχτηκαν τα λογοτεχνικά παράγωγα της δεκαετίας 2004-2014. Τα παιδικά μυθιστορήματα, καθώς εμπεριέχουν και ταυτόχρονα προάγουν ιδεολογία, είναι ένας ιδιαίτερα γόνιμος χώρος, για να διερευνηθούν οι κυρίαρχες απόψεις της κοινωνίας στην οποία δημιουργήθηκαν. Οι έννοιες του κοινωνικού αποκλεισμού καθώς και της πολυπολιτισμικής λογοτεχνίας είναι οι δύο κεντρικοί άξονες του θεωρητικού μέρους της εργασίας. Η έρευνα που ακολουθεί χρησιμοποιεί ως βασική μεθοδολογική προσέγγιση την πολιτισμική εικονολογία, αλλά και την ποιοτική έρευνα περιεχομένου, ώστε μέσω ενός συνδυασμού εργαλείων έρευνας να προκύψουν κατά το δυνατόν ασφαλή συμπεράσματα.
description: This work has as main objective to capture representations of socially excluded groups and particularly Roma, returnees, members of the Muslim minority and migrant workers in children's novels. For the study were chosen the literary derivatives of the decade 2004-2014. As children's novels contain and promote ideology, is a particularly fertile area, to investigate the dominant views of the society in which they were created. The concepts of social exclusion and multicultural literature are the two key aspects of the theoretical part of the work. The research follows uses imagologie as basic methodological approach , but also the qualitative content research, that through a combination of research tools to emerge as safe as possible conclusions.
Supporting rural women in Arctic low carbon transitions: a knowledge network
Creators: name: Vuin, Ana
name: Green, Alexa
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 440603
subject: Economic geography
classificationCode: 440509
subject: Women's studies (incl. girls' studies)
classificationCode: 350704
subject: Entrepreneurship
classificationCode: 440406
subject: Rural community development
classificationCode: 441003
subject: Rural sociology
classificationCode: 440609
subject: Rural and regional geography

description: Rural economies are undergoing significant change as countries seek to meet international climate targets. While this brings new economic opportunities, for example related to renewable energy or forestry, it also brings challenges for those directly or indirectly reliant on carbon-intensive industries.Scientific research on Just Transitions tends to focus on the impacts of low-carbon transitions on those in traditionally male-dominated professions, especially coal miners or oil workers. Yet, international evidence shows that previous rounds of economic restructuring have produced distinctive new labour markets: places most affected by decline in male-dominated, energy intensive industries have also seen a rise in female employment in flexible service industries. However, these roles are often insecure and low paid. We also know that women are key contributors to the rural economy and their empowerment is crucial to unlocking talent that can help rural communities become more resilient.
Chaos and pole skipping in CFT$_2$
Creators: name: Ramirez, David M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent work has suggested an intriguing relation between quantum chaos and energy density correlations, known as pole skipping. We investigate this relationship in two dimensional conformal field theories on a finite size spatial circle by studying the thermal energy density retarded two-point function on a torus. We find that the location $ω_* = i λ$ of pole skipping in the complex frequency plane is determined by the central charge and the stress energy one-point function $\langle T\rangle$ on the torus. In addition, we find a bound on $λ$ in $c>1$ compact, unitary CFT$_2$s identical to the chaos bound, $λ\leq 2πT$. This bound is saturated in large $c$ CFT$_2$s with a sparse light spectrum, as quantified by arXiv:1405.5137, for all temperatures above the dual Hawking-Page transition temperature.
description: 16 pages, 2 figures
Παρακολούθηση τηλεόρασης, ενασχόληση με τον ηλεκτρονικό υπολογιστή και συμμετοχή σε φυσική δραστηριότητα παχύσαρκων και μη μαθητών δημοτικού σχολείου.
Creators: name: Κάμτσιος, Σπυρίδων
name: Διγγελίδης, Νικόλαος
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The purpose of this study was to examine the differences among pupils of the elementary school, with different body mass index as to: a) their sedentary daily habits (TV watching, PC usage), b) their participa¬tion in mild, moderate and strenuous exercise and c) their participation in physical activity. In this study participated 362 boys and 413 girls. Students were divided according to their body mass index, to those with: a) normal BMI, b) overweight children, c) obese children. 183 and 26 of those pupils were categorized as overweight and obese accordingly. The overweight and obese pupils participate less in moderate and strenuous exercise, they adopt more sedentary habits as many hours of TV watch¬ing and PC usage and they don’t participate in after school physical activ¬ity. The results of this study imply the need of necessary school interven¬tions in the late primary school classes, in order to create positive behav¬iors for the participation in physical activity and the avoidance of the sedentary behaviors.
description: Παιδαγωγική Επιθεώρηση, Vol. 44 (2007)
Παράγοντες που συμβάλλουν θετικά στην εφαρμογή πρακτικών συμπερίληψης (inclusion): Μελέτη περιπτώσεων σε τάξεις δημοτικού σχολείου στην Αγγλία
Creators: name: Μέσσιου, Κυριακή
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: This article explores the factors that need to be considered for the suc¬cessful implementation of inclusive practices in schools. The article reports on a research that involved a qualitative study in a primary school in the U.K. The aim of the study was to investigate factors within a classroom set- 
ting that are important for the development of inclusive practices. Three classrooms of the particular school, which involved children defined as hav¬ing special needs, were involved in the research. Qualitative methods were used for the collection of data. In particular, participant observations and interviews with the teachers were conducted.
Four factors were identified as having a significant role in the develop¬ment of inclusive practices within a classroom: the classroom’s environment, children’s interactions, ways of working and learning, and teacher’s attitudes and behaviour. It is argued that the classroom teacher seems to be the most influential factor for the development of inclusive practices, since he/she is in a position to control the other three factors through the way he/she organ¬ises his/her work.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Ποιότητα Λογιστικών Καταστάσεων & Διεθνή Λογιστικά Πρότυπα:
Creators: name: Μπουλιώνη, Ελένη Κλεάνθη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ποιότητα Λογιστικών Καταστάσεων
Διεθνή Λογιστικά Πρότυπα
Κλάδος Υγείας
Accounting Quality
IFRS
Medical Industry

description: Στη συγκεκριμένη έρευνα μελετήθηκε η ποιότητα των λογιστικών καταστάσεων πριν και μετά την υποχρεωτική εφαρμογή των Διεθνών Λογιστικών Προτύπων των επιχειρήσεων του κλάδου υγείας που είναι εισηγμένες στο ελληνικό χρηματιστήριο. Τα αποτελέσματα της έρευνας έδειξαν πως η υποχρεωτική εφαρμογή των ΔΛΠ δεν επηρέασε σημαντικά την ποιότητα των οικονομικών καταστάσεων.
description: This study examines the effect of mandatory adoption of International Financial Reporting Standards on the quality of accounting information reported by all the Greek firms of the medical industry listed in the Athens Stock Exchange. The results suggest that mandatory IFRS adoption had no significant impact on the quality of accounting information.
Το αναγνωστικό κίνητρο των παιδιών: Διαστάσεις και σχέση με το φύλο, το κοινωνικο-οικονομικό επίπεδο και τη χώρα καταγωγής
Creators: name: Μαλαφάντης, Κωνσταντίνος Δ.
name: Φελούκα, Βασιλική
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: Reading motivation is the individual’s internal state which moves him/her to seek reading material, engage in reading, and persist in reading activity. This kind of motivation has been investigated less systematically than motivation in general. The aim of this empirical study was to examine reading motivation during the end of the school-age period. Individual semi-structured interviews were conducted with 337 sixth-grade students from Athens and Piraeus. Their answers were analyzed on the basis of the reading motivation taxonomy suggested by Guthrie et al. (1996). Results indicated various dimensions of reading motivation, their frequency, the associations among them, and with gender, socio-economic status, and country of origin. Pedagogical implications are discussed.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Η λεκτική συμπεριφορά των καθηγητών στο λύκειο: Η άλλη μορφή της επιθετικότητας στη σχολική τάξη
Creators: name: Κουτσούλης, Μιχάλης
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The interest of the study focuses on the kind of aggressive verbal behav¬ior of the lyceum teachers in the classroom. For the collection of the data a self-administered questionnaire was used among 608 students in 5 lyceums in Cyprus between January and April 2002. Teacher aggressive verbal behavior seems to send messages showing that they underestimate the stu¬dents. Several aggressive messages show low expectations to the students. Also some wording of the teachers seems to discriminate students between areas of concentration. In conclusion it appears that teachers in their effort to behave the students use such aggressive behavior, which destroys the rela¬tionship between them and the students.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Efficiency, selectivity and robustness of the nuclear pore complex transport
Creators: name: Zilman, A.
name: DiTalia, S.
name: Chait, B. T.
name: Rout, M. P
name: Magnasco, M. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: All materials enter or exit the cell nucleus through nuclear pore complexes (NPCs), efficient transport devices that combine high selectivity and throughput. A central feature of this transport is the binding of cargo-carrying soluble transport factors to flexible, unstructured proteinaceous filaments called FG-nups that line the NPC. We have modeled the dynamics of transport factors and their interaction with the flexible FG-nups as diffusion in an effective potential, using both analytical theory and computer simulations. We show that specific binding of transport factors to the FG-nups facilitates transport and provides the mechanism of selectivity. We show that the high selectivity of transport can be accounted for by competition for both binding sites and space inside the NPC, which selects for transport factors over other macromolecules that interact only non-specifically with the NPC. We also show that transport is relatively insensitive to changes in the number and distribution of FG-nups in the NPC, due mainly to their flexibility; this accounts for recent experiments where up to half of the total mass of the NPC has been deleted, without abolishing the transport. Notably, we demonstrate that previously established physical and structural properties of the NPC can account for observed features of nucleocytoplasmic transport. Finally, our results suggest strategies for creation of artificial nano-molecular sorting devices.
description: 38 pages, six figures
Οι πολυμεσικές αναπαραστάσεις και η παρακίνηση στα εκπαιδευτικά παιχνίδια: Μια μελέτη περίπτωσης
Creators: name: Καρούλης, Αθανάσης
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: This paper investigates the role of multimedia representations and moti¬vation in educational computer games (aka EduGames). A case study has been performed with the participation of 11 children aged 6-14 years. The considered software is a freeware product, which covers multiple aspects of the six first classes of the school. The locus of this case study is not to assess the software, but merely investigate a framework to explain how users are motivational affected by means of multimedia representations. Bearing this in mind, a well-known taxonomy concerning the educational representa¬tions has been employed, in order to classify the various observations dur¬ing the 3-day period the children interacted with the environment. Subsequently, in order to interpret the obtained data into results of educa¬tional value, the ARCS model of motivation has been considered. The find¬ings have showed a clear domination of the animated representations, fol¬lowed by the aural modality, which showed to be the most motivating for children of the considered ages. However some concerns remain, such as a concrete and careful design of the educational parameters, which must be performed at the design stage, in order not to diminish the educational value of the considered environment.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Η γλωσσική ανάπτυξη σε παιδιά προσχολικής ηλικίας: Ερευνητικά δεδομένα από τη χρήση ψυχομετρικών εργαλείων
Creators: name: Βορριά, Παναγιώτα.
name: Κιοσέογλου, Γρηγόρης
name: Ντούμα, Μαρία
name: Λιμναίου, Ναυσικά
name: Ιωσηφίδου, Βαρβάρα
name: Σκεπετάρη, Στέλλα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The aim of the present study was to examine the language development of preschool aged children who attended Day Care Centers or Nurseries. The sample was consisted of 213 children (106 boys and 107 girls) 30 to 71 months and 29 days (Mean=51.85, S.D. = 10.30), who were divided in seven age groups (time interval = six months), each of which was consisted the same number of boys and girls. Children’s language development was examined by the British Picture Vocabulary Scales (BPVS) and the McCarthy Scales of Children’s Abilities (MSCA). The results showed that preschool children increase their language acquisition; however, the rate of their progress differs in different age groups. Rapid expansion of the vocabulary and word knowledge, as well as great improvement in children’s verbal abilities, and verbal fluency observed between ages 2,5-3 and 3-3,5 as well as between 4-4,5 and 4,5-5. Significant improvements were also observed between the age groups 4,5-5 and 5-5,5 in verbal abilities and in word knowledge - picture vocabulary. Important improve¬ment in verbal memory - story was observed between the age groups 3-3,5 and 3,5-4 as well as between 3-3,5 and 3,5-4. Sex differences were not found.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Knowledge of Occupational Hazards and Use of Protective Equipment among Petrol Service Station Workers in Nakuru, Kenya
Creators: name: Joshua Kyalo Mutungi
name: Wilkister Moturi
name: Stanley Makindi
Publisher: name: Zenodo
Year: 2023

description: Employers are responsible for the safety, health and welfare of all persons working in their workplaces. Where the occupational hazard cannot be eliminated, the employer is required to inform all workers of any health risks and imminent danger present at the workplace, safety procedures in place, and protective measures available. Workers with a better understanding of relevant occupational hazards present in their workplace tend to implement relevant safety procedures, resulting to a healthy worker anda safe work environment. On the contrary, lack of knowledge and poor attitude towards safety procedures result in improper occupational health and safety practices thus putting the lives of fellow workers and customers at risk. However, there is limited documented data focusing on the knowledge of occupational hazards and the use of Personal Protective Equipments (PPEs) among petrol service station workers in Kenya. A cross-sectional survey of 192 workers picked randomly from 32 petrol stations within Nakuruwas employedin this study. Data was collected through questionnaires, an interview guide and an observation checklist, and analysed using the Statistical Package for the Social Sciences (SPSS Version 20). From the findings, all respondents (100%) had good knowledge of occupational hazards and about 92.2% of the respondents knew of one or more potential health effects associated with Premium Motor Spirit(PMS) exposure. The level of knowledge was significantly affected by the level of education. Regarding the use of PPEs, the study revealed that 60% of the respondents had been provided with PPEs.However, from observations, only 12, (6.7%) of the respondents used PPEs at the time of the study,particularly,Aprons/Overalls (99.1%). The low usage was attributed to the fact that the availability of PPEs was only “on need basis” and thus mostly worn during offloading which was considered to be hazardous. The findings of this study have drawn attention to the need for employers to provide workers who are occupationally exposed with requisite PPEs. Moreover, there is also a need for a lifelongeducation programme for the workers about occupational hazards and health risks, a PPE training programme and an arrangement for safety communication in the local language to change the perception and unsafe behaviours among petrol station workers.
Time-dependent Gutzwiller theory of pairing fluctuations in the Hubbard model
Creators: name: Seibold, G.
name: Becca, F.
name: Lorenzana, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a method to compute pairing fluctuations on top of the Gutzwiller approximation (GA). Our investigations are based on a charge-rotational invariant GA energy functional which is expanded up to second order in the pair fluctuations. Equations of motion for the fluctuations lead to a renormalized ladder type approximation. Both spectral functions and corrections to static quantities, like the ground-state energy, are computed. The quality of the method is examined for the single-band Hubbard model where we compare the dynamical pairing correlations for s- and d-wave symmetries with exact diagonalizations and find a significant improvement with respect to analogous calculations done within the standard Hartree-Fock ladder approximation. The technique has potential applications in the theory of Auger spectroscopy, superconductivity, and cold atom physics.
description: 17 pages, 7 figures
Constraining the accretion flow density profile near Sgr A* using the $L'$-band emission of the S2 star
Creators: name: Hosseini, S. Elaheh
name: Zajaček, Michal
name: Eckart, Andreas
name: Sabha, Nadeen B.
name: Labadie, Lucas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The density profile of the ambient medium around a supermassive black hole plays an important role in understanding the inflow-outflow mechanisms in the Galactic Centre. We constrain the spherical density profile using the stellar bow shock of the star S2 which orbits the supermassive black hole at the Galactic Centre with the pericentre distance of 14.4 mas ($\sim$ 1500 R$_\text{s}$). Assuming an elliptical orbit, we apply celestial mechanics and the theory of bow shocks that are at ram pressure equilibrium. We analyse the measured infrared flux density and magnitudes of S2 in the L'-band (3.8 micron) obtained over seven epochs in the years between 2004-2018. We detect no significant change in S2 flux density until the recent periapse in May 2018. The intrinsic flux variability of S2 is at the level of 2 - 3%. Based on the dust-extinction model, the upper limit on the number density at the S2 periapse is $\sim$1.87$\times$10$^9$ cm$^{-3}$, which yields a density slope of at most 3.20. Using the synchrotron bow-shock emission, we obtain an ambient density of $\leq$ 1.01$\times$10$^5$ cm$^{-3}$ and a slope of $\leq$ 1.47. These values are consistent with a wide variety of media from hot accretion flows to potentially colder and denser media comparable in properties to broad-line region clouds. A standard thin disc can be, however, excluded at the distance of the S2 pericentre. Based on our sensitivity of 0.01 mag, we can distinguish between hot accretion flows and thin, cold discs, where the latter can be excluded at the scale of the S2 periapse. Future observations of stars with smaller pericentre distances in the S cluster using instruments such as METIS@ELT with a photometric sensitivity of as much as 10$^{-3}$ mag will allow to probe the Galactic Centre medium at intermediate scales at densities as low as $\sim$ 700 cm$^{-3}$ in case of non-thermal bow-shock emission.
description: 17 pages, 12 figures, accepted for publication by A&A journal
Αμερικανικός Κινηματογράφος και Διεθνείς Σχέσεις στον Ψυχρό Πόλεμο:
Creators: name: Τέγου, Χριστίνα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Διεθνείς Σχέσεις
Κινηματογράφος
Ψυχρός Πόλεμος
International Relations
Cinema
Cold War

description: Σκοπός της διπλωματικής εργασίας ήταν ο απολογισμός των σχέσεων ανάμεσα στην κινηματογραφική παραγωγή του Χόλυγουντ και την κυβέρνηση των Η.Π.Α. κατά τη διάρκεια του Ψυχρού Πολέμου. Η κύρια υπόθεση είναι ότι κατά την περίοδο αυτή, οι κυβερνήσεις των Η.Π.Α. και το Χόλυγουντ υπήρξαν στενοί συνεργάτες, με τις πρώτες να εκμεταλλεύονται τη συνεργασία αυτή προκειμένου να πείσουν το κοινό για το φόβο μίας διαρκούς πυρηνικής απειλής. Εξετάσαμε την ένταξη της μελέτης του κινηματογράφου στην ανάλυση των Διεθνών Σχέσεων. Στη συνέχεια, συζητήθηκε ο αντίκτυπος των εξελίξεων της δεκαετίας του 1970 στις κοινωνικές επιστήμες και τις σπουδές του κινηματογράφου. Στη δεκαετία αυτή, οι συζητήσεις πάνω στη σχέση κινηματογράφου και ιδεολογίας προσανατολίστηκαν σε δύο αντίθετες μεταξύ τους κατευθύνσεις. Ακόμη, αναφερθήκαμε αναλυτικά στη σχέση που αναπτύχθηκε μεταξύ του κινηματογράφου του Χόλυγουντ και των αμερικανικών κυβερνήσεων κατά τη διάρκεια του Ψυχρού Πολέμου, ενώ επιχειρήθηκε να αποδειχθεί ότι η σχέση μεταξύ τους ήταν σχεδόν επίσημη, με τις ταινίες του πρώτου να χρησιμεύουν ως πολιτικά ντοκουμέντα που υπηρετούν την επίσημη πολιτική των κυβερνήσεων. Ένα άλλο θέμα που θίξαμε ήταν ο πόλεμος στο Βιετνάμ και η κινηματογραφική παραγωγή που τον καλύπτει.
description: The aim of the present thesis was the study of the relationship between the Hollywood cinema and the United States government during the Cold War era. The main assumption is that throughout the Cold War the United States governments and Hollywood were strategic partners, with the former to use this partnership in order to convince the public for fear of a permanent nuclear threat. We examined the grounds for integrating ‘cinema’ into the analysis of International Relations. Then we discussed the impact of developments taking place throughout 1970s in social sciences and cinema studies. During the 1970s, the discussions on cinema and ideology were oriented at two different directions. Furthermore, we analyzed the relationship between Hollywood cinema and the U.S. governments throughout the Cold War era, while it was attempted to be proven that the relationship between them was almost official, with the films of the first to serve as political documents serving official Government policy. Another issue we discussed was the war in Vietnam and the relevant film production.
Enhanced persistence and collective migration in cooperatively aligning cell clusters
Creators: name: Debets, Vincent E.
name: Janssen, Liesbeth M. C.
name: Storm, Cornelis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Most cells possess the capacity to locomote. Alone or collectively, this allows them to adapt, to rearrange, and to explore their surroundings. The biophysical characterization of such motile processes, in health and disease, has so far focused mostly on two limiting cases: single-cell motility on the one hand, and the dynamics of confluent tissues such as the epithelium on the other. The in-between regime of clusters, composed of relatively few cells, moving as a coherent unit has received less attention. Such small clusters are, however, deeply relevant in development but also in cancer metastasis. In this work, we use cellular Potts models and analytical active matter theory to understand how the motility of small cell clusters changes with N, the number of cells in the cluster. Modeling and theory reveal our two main findings: Cluster persistence time increases with N while the intrinsic diffusivity decreases with N. We discuss a number of settings in which the motile properties of more complex clusters can be analytically understood, revealing that the focusing effects of small-scale cooperation and cell-cell alignment can overcome the increased bulkiness and internal disorder of multicellular clusters to enhance overall migrational efficacy. We demonstrate this enhancement for small-cluster collective durotaxis, which is shown to proceed more effectively than for single cells. Our results may provide some novel insights into the connection between single-cell and large-scale collective motion and may point the way to the biophysical origins of the enhanced metastatic potential of small tumor cell clusters.
Fluctons
Creators: name: Cartas-Fuentevilla, R.
name: Solano-Altamirano, J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: From the perspective of topological field theory we explore the physics beyond instantons. We propose the fluctons as nonperturbative topological fluctuations of vacuum, from which the self-dual domain of instantons is attained as a particular case. Invoking the Atiyah-Singer index theorem, we determine the dimension of the corresponding flucton moduli space, which gives the number of degrees of freedom of the fluctons. An important consequence of these results is that the topological phases of vacuum in non-Abelian gauge theories are not necessarily associated with self-dual fields, but only with smooth fields. Fluctons in different scenarios are considered, the basic aspects of the quantum mechanical amplitude for fluctons are discussed, and the case of gravity is discussed briefly.