cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unconventional critical behaviour in a quasi-two-dimensional organic conductor
Creators: name: Kagawa, F.
name: Miyagawa, K.
name: Kanoda, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Changing the interactions between particles in an ensemble-by varying the temperature or pressure, for example-can lead to phase transitions whose critical behaviour depends on the collective nature of the many-body system. Despite the diversity of ingredients, which include atoms, molecules, electrons and their spins, the collective behaviour can be grouped into several families (called 'universality classes') represented by canonical spin models1. One kind of transition, the Mott transition2, occurs when the repulsive Coulomb interaction between electrons is increased, causing wave-like electrons to behave as particles. In two dimensions, the attractive behaviour responsible for the superconductivity in high-transition temperature copper oxide3,4 and organic5-7 compounds appears near the Mott transition, but the universality class to which two-dimensional, repulsive electronic systems belongs remains unknown. Here we present an observation of the critical phenomena at the pressure-induced Mott transition in a quasi-two-dimensional organic conductor using conductance measurements as a probe. We find that the Mott transition in two dimensions is not consistent with known universality classes, as the observed collective behaviour has previously not been seen. This peculiarity must be involved in any emergent behaviour near the Mott transition in two dimensions.
description: 10 pages, 3 figures
Patient perspectives on digital health and physical activity in Parkinson’ disease: a brief research report
Creators: name: McDermott, Adam Douglas
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology

description: People living with Parkinson’s disease (PwP) typically have lower levels of physical activity (PA) which predisposes them to heart disease, reduced bone density and low exercise tolerance. Digital health has been shown to be effective at promoting PA in several clinical cohorts and monitoring PA in PwP. In addition, PwP have reported positive experiences with using digital health modalities such as smartwatches and telehealth. However, the perspectives of PwP on how best to use digital health to promote PA has yet to be investigated. The aim of this study was to investigate current levels of digital skills in PwP and the perspectives and opinions of PwP on the use of digital health for PA interventions. Eighty-nine PwP living in Ireland completed a cross-sectional questionnaire looking at current levels of PA and self-reported levels of digital skills. The majority of participants believed that PA was beneficial for PwP and had a moderate to high level of digital skills. Important factors to consider when constructing a digital health PA intervention included ease of access, low cost, variety of exercises and physical activity options and a feedback function. PwP have a moderate to high level of self-reported digital skills. This study provides useful information on factors that should be considered when constructing a digital PA intervention for PwP
Αξιολόγηση του σχολικού εγχειριδίου Ιστορίας Α' λυκείου στην κυπριακή εκπαίδευση
Creators: name: Ερωτοκρίτου-Σταύρου, Θεούλα
name: Κουτσελίνη-Ιωαννίδου, Μαίρη
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The major role of textbooks is their function as means of teaching. Usually they are used by teachers and students in class and at burnt for the achievement of the targets of teaching and learning. The introduction of the Comprehensive Lyceum in Cyprus along with the parallel revision of the Curricula and the creation of special teaching classes gave emphasis on innovations for the purpose of independent learning with the acting impli¬cation of student in the building of knowledge. Within this context, the eval¬uation of textbooks is considered important especially when they have to contribute to new aims and orientations of the education. The evaluation concerns the Cyprus History textbook for the first grade of Lyceum regard¬ing the form, the content, the language, the structure, the activities, meth¬ods and instructional strategies suggested. The evaluation is based on peda¬gogical, scientific, curricular criteria.
description: Παιδαγωγική Επιθεώρηση, Vol. 42 (2006)
Elemental Abundances in M31: Properties of the Inner Stellar Halo
Creators: name: Escala, Ivanna
name: Kirby, Evan N.
name: Gilbert, Karoline M.
name: Wojno, Jennifer
name: Cunningham, Emily C.
name: Guhathakurta, Puragra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present measurements of [Fe/H] and [$α$/Fe] for 128 individual red giant branch stars (RGB) in the stellar halo of M31, including its Giant Stellar Stream (GSS), obtained using spectral synthesis of low- and medium-resolution Keck/DEIMOS spectroscopy ($R \sim 3000$ and 6000, respectively). We observed four fields in M31's stellar halo (at projected radii of 9, 18, 23, and 31 kpc), as well as two fields in the GSS (at 33 kpc). In combination with existing literature measurements, we have increased the sample size of [Fe/H] and [$α$/Fe] measurements from 101 to a total of 229 individual M31 RGB stars. From this sample, we investigate the chemical abundance properties of M31's inner halo, finding $\langle$[Fe/H]$\rangle$ = $-$1.08 $\pm$ 0.04 and $\langle$[$α$/Fe]$\rangle$ = 0.40 $\pm$ 0.03. Between 8--34 kpc, the inner halo has a steep [Fe/H] gradient ($-$0.025 $\pm$ 0.002 dex kpc$^{-1}$) and negligible [$α$/Fe] gradient, where substructure in the inner halo is systematically more metal-rich than the smooth component of the halo at a given projected distance. Although the chemical abundances of the inner stellar halo are largely inconsistent with that of present-day dwarf spheroidal (dSph) satellite galaxies of M31, we identified 22 RGB stars kinematically associated with the smooth component of the stellar halo that have chemical abundance patterns similar to M31 dSphs. We discuss formation scenarios for M31's halo, concluding that these dSph-like stars may have been accreted from galaxies of similar stellar mass and star formation history, or of higher stellar mass and similar star formation efficiency.
description: Accepted to ApJ, 29 pages main text
Barriers and facilitators to physical activity for people with persistent musculoskeletal pain: systematic review and synthesis using the Theoretical Domains Framework
Creators: name: Booth, Gregory
name: D’Lima, Danielle
name: Gilbert, Anthony
name: Greenwood, James
name: Sharma, Nisha
name: Howarth, Ana
name: Hurley, Michael
name: Ussher, Michael
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Virology

description: Physical activity (PA) is recommended for people with persistent musculoskeletal pain due to its benefits on symptoms, function and general health. This systematic review aimed to identify the barriers and facilitators to PA for people with persistent musculoskeletal pain and categorise these using the Theoretical Domains Framework (TDF). It also aimed to identify the prominence of each TDF domain and similarities and differences between included conditions and PA types. Eligible studies reported barriers and/or facilitators to PA for adults with persistent musculoskeletal pain. Barriers and facilitators were coded using the TDF. Thematic analysis was then conducted within each TDF domain. TDF domains and barrier and facilitators were then compared across the different conditions and PA types. Thirty articles were included. ‘Environmental context and resources’, ‘social influences’ and ‘beliefs about consequences’ are the most prominent TDF domains for both barriers and facilitators, whereas ‘beliefs about capabilities’ and ‘emotion’ are prominent domains specifically for barriers, and ‘reinforcement’ and ‘behavioural regulation’ for facilitators. These domains were consistent across conditions and most PA types. These findings can inform future intervention development. Healthcare professionals may benefit from prioritising addressing the more prominent TDF domains to enhance patients’ PA.
Ολιστική προσέγγιση στον επαγγελματικό προσανατολισμό: πρόταση διευρυμένης εφαρμογής στο δευτεροβάθμιο σχολείο
Creators: name: Παπαβασιλείου-Αλεξίου, Ιωάννα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: Die wissenschalüiche Diskussion über die Berufsberatung orientiert sich stärker als früher auf ihre effektive Anwendung. Aktuelle Untersuchungen auf internationaler und europäischer Ebene haben in diesem Bereich einen deutlichen Widerspruch festgestellt: Trotz der wachsenden Akzeptanz der zentralen Funktion der Berufsorientierung für die Erreichung von wichtigen Zielen der sozioökonomischen Politik, ist die Berufsorientierung wenig wirksam, was die berufliche Entwicklung und die Berufswahl der Jugendlichen betrifft. Die Annahme eines holistischen Ansatzes ist eine ernste Herausforderung für die Berufsorientierung heute. Der Berater M)I1 das Individuum als eine ganze Persönlichkeit annähern und demzufolge versuchen, alle Seiten seiner nswelt -im Sinne einer "human carcer'- zu verstehen. Die schulische icrul's Wahlvorbereitung kann Aspekte dieses Modells insofern übernehmen. sie in der Schule als Ganze durchgeführt wird d.h. ohne sich auf das Fach Schulische Berufsorientierung" zu beschränken. In unserem Artikel werden ntspreebend folgende Vorschläge gemacht: (a) Berufliche Information im lahmen jedes einzelnen Schulfaches, (b) Anwendung von aktiven didaktis-hen Methoden, die den Schülern Schlüsselqualtfikationcn beibringen, (c) iedienung von erufsorientierungszieien durch Querverbindungen unter Fächern und (d) Sensibilisierung der Lehrer - Zusammenarbeit.
description: Παιδαγωγική Επιθεώρηση, Vol. 42 (2006)
Additional file 1 of Prevalence of musculoskeletal disorders among perioperative nurses: a systematic review and META-analysis
Creators: name: Clari, Marco
name: Godono, Alessandro
name: Garzaro, Giacomo
name: Voglino, Gianluca
name: Gualano, Maria Rosaria
name: Migliaretti, Giuseppe
name: Gullino, Attilia
name: Ciocan, Catalina
name: Dimonte, Valerio
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Search strings for Pubmed.
Magnetospheric Gap and Accumulation of Giant Planets Close to the Star
Creators: name: Romanova, M. M.
name: Lovelace, R. V. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The bunching of giant planets at a distance of several stellar radii may be explained by the disruption of the inner part of the disk by the magnetosphere of the star during the T Tauri stage of evolution. The rotating magnetic field of the star gives rise to a low density magnetospheric gap where stellar migration is strongly suppressed. We performed full 3D magnetohydrodynamic simulations of the disk-magnetosphere interaction and examined conditions for which the magnetospheric gap is "empty", by changing the misalignment angle between magnetic and rotational axes of the star, Theta, and by lowering the adiabatic index gamma, which mocks up the effect of heat conductivity and cooling. Our simulations show that for a wide range of plausible conditions the gap is essentially empty. However, in the case of large misalignment angles Theta, part of the funnel stream is located in the equatorial plane and the gap is not empty. Furthermore, if the adiabatic index is small (gamma=1.1) and the rotational and magnetic axes are almost aligned, then matter penetrates through the magnetosphere due to 3D instabilities forming high-density equatorial funnels. For these two limits there is appreciable matter density in the equatorial plane of the disk so that a planet may migrate into the star.
description: 6 pages, 6 figures, Accepted to the ApJ Letters. See version of the paper with higher resolution plots at http://astrosun2.astro.cornell.edu/us-rus/planets.htm
The Horizontal Branch morphology of the globular cluster NGC 1261 using AstroSat
Creators: name: Rani, Sharmila
name: Pandey, Gajendra
name: Subramaniam, Annapurni
name: Sahu, Snehalala
name: Rao, N. Kameswara
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results obtained from the UV photometry of the globular cluster NGC 1261 using Far-UV (FUV) and Near-UV (NUV) images acquired with the Ultraviolet Imaging Telescope (UVIT) onboard the Astrosat satellite. We utilized the UVIT data combined with HST, GAIA, and ground-based optical photometric data to construct the different UV colour-magnitude diagrams (CMDs). We detected blue HB (BHB), and two extreme HB (EHB) stars in FUV, whereas full HB, i.e., red HB (RHB), BHB as well as EHB is detected in NUV CMDs. The 2 EHB stars, identified in both NUV and FUV, are confirmed members of the cluster. The HB stars form a tight sequence in UV-optical CMDs, which is almost aligned with Padova isochrones. This study sheds light on the significance of UV imaging to probe the HB morphology in GCs.
description: 7 Pages, 4 Figures, Accepted for publication in JAA
Η επίδραση των εκπομπών των ηλεκτροπαραγωγικών σταθμών της Βόρειας Ελλάδας και της FYROM στις τοπικές συγκεντρώσεις SO2:
Creators: name: Βουρουτζή, Καλλιόπη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ατμοσφαιρική ρύπανση
Διοξείδιο του θείου
Συγκεντρώσεις
Atmospheric polution
SO2
Concentrations
Hysplit

description: Σκοπός αυτής της εργασίας είναι η εξοικείωση με το πρόγραμμα Hysplit και ο υπολογισμός των συγκεντρώσεων διοξειδίου του θείου (SO2) στην Βόρεια Ελλάδα και στην FYROM από τα εργοστάσια παραγωγής ηλεκτρικής ενέργειας που βρίσκονται σε αυτές τις περιοχές. Πιο συγκεκριμένα, υπολογίσαμε και συγκρίναμε τις συγκεντρώσεις του SO2 για κάθε εποχή του 2007 και βρήκαμε ποιος μήνας του έτους παρουσιάζει τις μέγιστες και ποιος τις ελάχιστες συγκεντρώσεις. Επίσης, υπολογίσαμε το ποσοστό με το οποίο η κάθε χώρα επηρεάζει την ατμόσφαιρά της άλλης. Από την σύγκριση των αποτελεσμάτων, προκύπτει ότι οι μεγαλύτερες συγκεντρώσεις του SO2 παρατηρούνται κατά την διάρκεια του φθινοπώρου και κατόπιν του καλοκαιριού, της άνοιξης και του χειμώνα. Ο μήνας που παρουσιάζει τις μέγιστες συγκεντρώσεις το έτος 2007 είναι ο Ιούνιος, ενώ ο μήνας με τις ελάχιστες συγκεντρώσεις είναι ο Μάρτιος. Τέλος, διαπιστώνουμε ότι η μόλυνση της ατμόσφαιρας της Βόρειας Ελλάδας σε SO2 από τις ηλεκτροπαραγωγικές μονάδες της FYROM είναι πολύ μεγαλύτερη συγκρινόμενη με την ατμοσφαιρική μόλυνση της FYROM από τις αντίστοιχες της Βόρειας Ελλάδας.
description: The aim of this work is to familiarize with the program Hysplit and the calculation of concentrations of sulfur dioxide (SO2) in Northern Greece and FYROM from power plants located in these areas. More specifically, we calculated and compared the concentrations of SO2 for each season of 2007 and found what month of the year shows the maximum and minimum concentrations. Furthermore, we calculated the percentage each country affects the atmosphere of the other. Comparing the results, it becomes clear that the highest concentrations of SO2 are observed during the autumn and then during summer, spring and winter. The month showing the highest concentrations in the year 2007 is June, while the month with the minimum concentrations is March. Finally, we note that the pollution of the atmosphere of Northern Greece in SO2 from the power plants of FYROM is much higher compared to the atmospheric pollution of FYROM in SO2 from those of Northern Greece.
The early and late-time spectral and temporal evolution of GRB 050716
Creators: name: Rol, E.
name: Osborne, J. P.
name: Page, K. L.
name: McGowan, K. E.
name: Beardmore, A. P.
name: O'Brien, P. T .
name: Levan, A. J.
name: Bersier, D.
name: Guidorzi, C.
name: Marshall, F.
name: Fruchter, A. S.
name: Tanvir, N. R.
name: Monfardini, A.
name: Gomboc, A.
name: Barthelmy, S.
name: Bannister, N. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a comprehensive set of observations of Gamma Ray Burst 050716, detected by the Swift satellite and subsequently followed-up rapidly in X-ray, optical and near infra-red wavebands. The prompt emission is typical of long-duration bursts, with two peaks in a time interval of T90 = 68 seconds (15 - 350 keV). The prompt emission continues at lower flux levels in the X-ray band, where several smaller flares can be seen, on top of a decaying light curve that exhibits an apparent break around 220 seconds post trigger. This temporal break is roughly coincident with a spectral break. The latter can be related to the extrapolated evolution of the break energy in the prompt gamma-ray emission, and is possibly the manifestation of the peak flux break frequency of the internal shock passing through the observing band. A possible 3 sigma change in the X-ray absorption column is also seen during this time. The late-time afterglow behaviour is relatively standard, with an electron distribution power-law index of p = 2 there is no noticable temporal break out to at least 10 days. The broad-band optical/nIR to X-ray spectrum indicates a redshift of z ~> 2 for this burst, with a host-galaxy extinction value of E(B-V) ~ 0.7 that prefers an SMC-like extinction curve.
description: Accepted to MNRAS. 8 pages, 5 figures
Inclusive pion double charge exchange in light p-shell nuclei
Creators: name: Fong, W.
name: Matthews, J. L.
name: Dowell, M. L.
name: Kinney, E. R.
name: Soos, T.
name: Wang, M. Y.
name: Wood, S. A.
name: Gram, P. A. M.
name: Rebka,, G. A.
name: Roberts, D. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report the results of a series of measurements of the differential cross sections for inclusive pion double charge exchange in 6,7Li, 9Be, and 12C for positive and negative incident pions of energies 120, 180, and 240 MeV. The data are compared with the predictions of an intranuclear cascade model and a model based on two sequential single charge exchange processes.
description: 36 pages, 14 figures, 6 tables
Nichols algebras over classical Weyl groups (II)
Creators: name: Wu, Weicai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: It is shown that except in three cases conjugacy classes of classical Weyl groups $W(B_{n})$ and $W(D_{n})$ are of type ${\rm D}$. This proves that Nichols algebras of irreducible Yetter-Drinfeld modules over the classical Weyl groups $\mathbb W_{n}$ (i.e. $H_{n}\rtimes \mathbb{S}_{n}$) are infinite dimensional, except the class of type $(2, 3),(1^{2}, 3)$ in $\mathbb S_{5}$, and $(1^{n-2}, 2)$ in $\mathbb S_{n}$ for $n >5$.
Perturbative vs Schwinger-propagator method for the calculation of amplitudes in a magnetic field
Creators: name: Nieves, Jose F.
name: Pal, Palash B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the calculation of amplitudes for processes that take place in a constant background magnetic field, first using the standard method for the calculation of an amplitude in an external field, and second utilizing the Schwinger propagator for charged particles in a magnetic field. We show that there are processes for which the Schwinger propagator method does not yield the total amplitude. We explain why the two methods yield equivalent results in some cases and indicate when we can expect the equivalence to hold. We show these results in fairly general terms and illustrate them with specific examples as well.
description: 23 pages, LateX, uses axodraw.sty
Spin fluctuations in quantized transport of magnetic topological insulators
Creators: name: Li, Yu-Hang
name: Cheng, Ran
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In magnetic topological insulators, quantized electronic transport is interwined with spontaneous magnetic ordering, as magnetization controls band gaps, hence band topology, through the exchange interaction. We show that considering the exchange gaps at the mean-field level is inadequate to predict phase transitions between electronic states of distinct topology. Thermal spin fluctuations disturbing the magnetization can act as frozen disorders that strongly scatter electrons, reducing the onset temperature of quantized transport appreciably even in the absence of structural impurities. This effect, which has hitherto been overlooked, provides an alternative explanation of recent experiments on intrinsic magnetic topological insulators.
A Survey of Weighted Approximation for Exponential Weights
Creators: name: Lubinsky, Doron S
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41, 42

description: Let W: R to (0,1] be continuous. Bernstein's approximation problem, posed in 1924, deals with approximation by polynomials in the weighted uniform norm ||fW|| Linfinity(R) . The qualitative form of this problem was solved by Achieser, Mergelyan, and Pollard, in the 1950's. Quantitative forms of the problem were actively investigated starting from the 1960's. We survey old and recent aspects of this topic, including the Bernstein problem, weighted Jackson and Bernstein Theorems, Markov-Bernstein and Nikolskii inequalities, orthogonal expansions and Lagrange interpolation. We present the main ideas used in many of the proofs, and different techniques of proof, though not the full proofs. The class of weights we consider is typically even, and supported on the whole real line, so we exclude Laguerre type weights on [0,infinity). Nor do we discuss Saff's weighted approximation problem, nor the asymptotics of orthogonal polynomials.
description: 105 pages
Διδασκαλία και εκμάθηση της Γερμανικής ως δεύτερης γλώσσας στο δημοτικό σχολείο με βάση τη διδακτική της πολυγλωσσίας
Creators: name: Καραγιαννίδου, Ευαγγελία
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: In Griechenland kann Deutsch als 2. Fremdsprache seit 1993 ab der 7. Klasse gewählt werden. Zudem werden im Schuljahr 2005/06 für 2 Jahre Pilotklassen mit Deutsch oder Französisch als 2. Fremdsprache in 210 Grundschulen eingerichtet. Der vorliegende Beitrag präsentiert konkrete Vorschläge für den Deutschunterricht in der Primarstufe und berücksichtigt dabei auch eine Didaktik der Mehrsprachigkeit. Für deren Umsetzung bedarf es der Zusammenarbeit der für Curricula Verantwortlichen, der Lehrwerkautorinnen, der Lehrerinnen für Ll, L2 und L3 sowie ent¬sprechender Fortbildungsmanahmen.
description: Παιδαγωγική Επιθεώρηση, Vol. 42 (2006)
Additional file 2 of Prevalence of musculoskeletal disorders among perioperative nurses: a systematic review and META-analysis
Creators: name: Clari, Marco
name: Godono, Alessandro
name: Garzaro, Giacomo
name: Voglino, Gianluca
name: Gualano, Maria Rosaria
name: Migliaretti, Giuseppe
name: Gullino, Attilia
name: Ciocan, Catalina
name: Dimonte, Valerio
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 2. Quality Assessment.
Οστεοενσωμάτωση οδοντικών εμφυτευμάτων σε ασθενείς που υποβάλλονται σε θεραπεία με διφωσφονικά:
Creators: name: Καφαντάρης, Σωτήριος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Οδοντικά εμφυτεύματα
Διφωσφονικά
Dental Implants
Bisphosphonates

description: Τα Διφωσφονικά (ΔΦ) είναι μια πολύ σημαντική ομάδα φαρμάκων τα οποία συνταγογραφούνται εκτεταμένα για την θεραπεία μεταβολικών ή ογκολογικών προβλημάτων του σκελετικού συστήματος. Σκοπός της παρούσης συστηματικής βιβλιογραφικής ανασκόπησης είναι να διερευνηθεί το κατά πόσο ασθενείς υπό θεραπεία με ΔΦ είναι δυνατόν να δεχθούν εμφυτευματική θεραπεία και ποιοί είναι οι κίνδυνοι για παρενέργειες που ενδεχομένως ελλοχεύουν. Διεξήχθη ηλεκτρονική αναζήτηση στις διαθέσιμες στο διαδίκτυο βάσεις δεδομένων (Medline, Cochrane Data Base και Enbase) για όλα τα σχετικά άρθρα που έχουν δημοσιευθεί και αποθηκευθεί στις παραπάνω βάσεις δεδομένων έως το 2014. Με βάση την υπάρχουσα βιβλιογραφία η λήψη ΔΦ είτε από του στόματος είτε ενδοφλεβίως, από μη ογκολογικούς ασθενείς, δεν αποτελεί απολύτως αντένδειξη για την τοποθέτηση οδοντικών εμφυτευμάτων. Επιβαρυντικοί παράγοντες είναι η μακροχρόνια λήψη ΔΦ ( >5έτη) και τοποθέτηση των εμφυτευμάτων σε περιοχές με μεγάλες λειτουργικές φορτίσεις (οπίσθιες περιοχές). Επίσης, όπως προκύπτει από την βιβλιογραφία, η χειρουργική διαδικασία τοποθέτησης των εμφυτευμάτων δεν αποτελεί παράγοντα κινδύνου για την εμφάνιση οστεονέκρωσης των γνάθων. Επειδή όμως όλες οι επί του παρόντος διαθέσιμες μελέτες είναι περιορισμένης αποδεικτικής ισχύος, είναι φανερό ότι για την ασφαλή απάντηση στα κλινικά ερωτήματα που τίθενται, είναι αναγκαίο να υπάρξουν κλινικές μελέτες ισχυρής αποδεικτικής ισχύος.
description: Bisphosphonates (BP) belong to a very significant group of drugs that they are prescribed excessively for the treatment of metabolic or oncological problems of the skeletal system. The aim of this systematic review is to investigate how safe it is for the patients under BP treatment to undergo implant treatment and what are the side effects that possibly will appear. It was conducted an electronically search over the available internet data base (Medline, Cochrane Database and Enbase) for all the relative articles that have been published and stored in the above data base until 2014. Based on the existing literature the use of oral BP’s or iv BP’s from non oncological patients, doesn’t consist absolute contraindication for implant placement. Aggravating factor is the long term of BP’s use (>5 years) and the implant placement in the posterior area. According to the literature, the surgical procedure of placing implants, it doesn’t constitute a risk factor for osteonecrosis of the jaw. However, all the available clinical studies at the moment have weak level of evidence. It is obvious though that clinical studies with strong level of evidence (CRCT-Meta analysis of CRCT’s) are needed to have the appropriate answers to the clinical questions that are raised.
Chemical acoustic emission analysis of the Briggs-Rauscher iodine clock
Creators: name: Brock, Ivan Heinz
Publisher: name: University of British Columbia
Year: 2009

description: The oscillations observed in the Briggs-Rauscher Iodine Clock were studied using chemical acoustic emission (CAE) analysis. The experimental system evolved through three separate designs. The first early design employed a batch delivery system and utilized a piezoelectric transducer as the CAE sensor. The second design employed a flow delivery system and the oscillating reaction was monitored simultaneously by CAE, ultraviolet-visible spectrophotometry, and an ion-selective electrode. Sampling periods of 4.0 seconds made this a “low resolution” system. The third design was an optimized version of the second, with shorter sampling periods (1.0 seconds), which led to higher resolution data. The concentrations of the reagents used in the first system were those recommended by Briggs and Rauscher. Four unique phases of the oscillator were observed. The peak slopes during the positive slope phase increased according to second order kinetics, and the decreasing peak slopes during the negative slope phase were found to be independent of reagent concentration. Analysis of the averaged power spectra revealed two distinct frequency regions. Chemometric analysis successfully identified signals due to noise. A series of experiments were conducted in which [iodate] varied over a range of ca. 0.004 to 0.037 M at three different temperatures: 25, 30 and 35°C. It was discovered that the number of oscillations (both CAE and iodine oscillations) was independent of temperature. The CAB peak rates (increase and decrease) were also found to be independent of temperature while the iodine production and consumption rates were found to ca. triple with each five degree rise in temperature. Integrated CAE d.c. rates followed second order kinetics. Another series of experiments were conducted in which H₂O₂ was varied over the range of ca. 0.078 to 0.78 M at 35°C, The number of observed CAE oscillations was found to be independent of initial [H₂O₂] while the number of iodine oscillations increased as initial [H₂O₂] increased. Integrated CAE d.c. rates followed no simple trend. Under the conditions examined, a minimum [iodate] of 0.0 19 M, and [H₂O₂] of 0.16 M was required for oscillations to commence. Periodicity in the CAE data was noted in those experiments which did not strongly oscillate and attributed to a dissolved oxygen model. A refinement of the currently accepted mechanism is proposed and the utility of CAE as a tool to investigate oscillatory kinetics is discussed.
SMRT Chatbots: Improving Non-Task-Oriented Dialog with Simulated Multiple Reference Training
Creators: name: Khayrallah, Huda
name: Sedoc, João
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Non-task-oriented dialog models suffer from poor quality and non-diverse responses. To overcome limited conversational data, we apply Simulated Multiple Reference Training (SMRT; Khayrallah et al., 2020), and use a paraphraser to simulate multiple responses per training prompt. We find SMRT improves over a strong Transformer baseline as measured by human and automatic quality scores and lexical diversity. We also find SMRT is comparable to pretraining in human evaluation quality, and outperforms pretraining on automatic quality and lexical diversity, without requiring related-domain dialog data.
description: EMNLP 2020 Camera Ready
Two-sided Grassmann-Rayleigh quotient iteration
Creators: name: Absil, P. -A.
name: Van Dooren, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F15

description: The two-sided Rayleigh quotient iteration proposed by Ostrowski computes a pair of corresponding left-right eigenvectors of a matrix $C$. We propose a Grassmannian version of this iteration, i.e., its iterates are pairs of $p$-dimensional subspaces instead of one-dimensional subspaces in the classical case. The new iteration generically converges locally cubically to the pairs of left-right $p$-dimensional invariant subspaces of $C$. Moreover, Grassmannian versions of the Rayleigh quotient iteration are given for the generalized Hermitian eigenproblem, the Hamiltonian eigenproblem and the skew-Hamiltonian eigenproblem.
description: The text is identical to a manuscript that was submitted for publication on 19 April 2007
Απόψεις των εκπαιδευτικών για τις επιμορφωτικές τους ανάγκες και τη γονεϊκή συμμετοχή στο σύγχρονο πολυπολιτισμικό σχολείο
Creators: name: Κουτρούμπα, Κωνσταντίνα
name: Ζησιμοπούλου, Αθανασία
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The formative influences of multicultural ism on Greek society found the teachers almost unprepared to cope with the difficulties emerging in the verse classrooms. Further training seminars on multicultural education are, thus, expected to counterbalance the noticeable lack of undergraduate knowledge about school diversity. The present questionnaire-based survey aims at ascertaining the attitudes of Secondary Education teachers towards undergraduate and postgraduate multicultural education. Teachers evaluate the adequacy and functionality of their undergraduate knowledge, define the teaching dexterities needed in linguistically/culturally diverse classrooms, put forward suggestions about the improvement of postgraduate training courses and the development of respect for diversity, and examine the role of parents and school cooperation in the establishment of sound in-classroom relations in a multicultural society.
description: Παιδαγωγική Επιθεώρηση, Vol. 41 (2006)
Mean field theory and fluctuation spectrum of a pumped, decaying Bose-Fermi system across the quantum condensation transition
Creators: name: Szymanska, M. H.
name: Keeling, J.
name: Littlewood, P. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the mean-field theory, and the properties of fluctuations, in an out of equilibrium Bose-Fermi system, across the transition to a quantum condensed phase. The system is driven out of equilibrium by coupling to multiple baths, which are not in equilibrium with each other, and thus drive a flux of particles through the system. We derive the self-consistency condition for an uniform condensed steady state. This condition can be compared both to the laser rate equation and to the Gross-Pitaevskii equation of an equilibrium condensate. We study fluctuations about the steady state, and discuss how the multiple baths interact to set the system's distribution function. In the condensed system, there is a soft phase (Bogoliubov, Goldstone) mode, diffusive at small momenta due to the presence of pump and decay, and we discuss how one may determine the field-field correlation functions properly including such soft phase modes. In the infinite system, the correlation functions differ both from the laser and from an equilibrium condensate; we discuss how in a finite system, the laser limit may be recovered.
description: 28 pages, 11 figures, revised version
Quadrupole collective variables in the natural Cartan-Weyl basis
Creators: name: De Baerdemacker, S.
name: Heyde, K.
name: Hellemans, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The matrix elements of the quadrupole collective variables, emerging from collective nuclear models, are calculated in the natural Cartan-Weyl basis of O(5) which is a subgroup of a covering $SU(1,1)\times O(5)$ structure. Making use of an intermediate set method, explicit expressions of the matrix elements are obtained in a pure algebraic way, fixing the $γ$-rotational structure of collective quadrupole models.
description: submitted to Journal of Physics A
Ο ρόλος του εκπαιδευτικού στην αντιμετώπιση των ψυχοκοινωνικών προβλημάτων των μαθητών με ειδικές μαθησιακές δυσκολίες: απόψεις εκπαιδευτικών της πρωτοβάθμιας εκπαίδευσης
Creators: name: Δόικου, Μάρω
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The aim of this study was to investigate elementary school teachers' views concerning the role of the teacher in dealing with psychosocial problems of children with specific learning disabilities (SLD). A sample of 320 teachers completed a questionnaire constructed for the purpose of the study. Despite the fact that teachers hold positive views toward the use of inclusive practices for students with SLD. the majority of them attributed psychosocial problems of these students to parents' or peers' responses to learning problems. Results suggest that, with the exception of those teachers who had acquired knowledge about SLD during their graduate studies or in-service training, participants do not consider social support and counseling as an integral part of teacher's role.
description: Παιδαγωγική Επιθεώρηση, Vol. 41 (2006)
Temperature dependence of charge transfer inefficiency in Chandra X-ray CCDs
Creators: name: Grant, C. E.
name: Bautz, M. W.
name: Kissel, S. E.
name: LaMarr, B.
name: Prigozhin, G. Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Soon after launch, the Advanced CCD Imaging Spectrometer (ACIS), one of the focal plane instruments on the Chandra X-ray Observatory, suffered radiation damage from exposure to soft protons during passages through the Earth's radiation belts. The primary effect of the damage was to increase the charge transfer inefficiency (CTI) of the eight front illuminated CCDs by more than two orders of magnitude. The ACIS instrument team is continuing to study the properties of the damage with an emphasis on developing techniques to mitigate CTI and spectral resolution degradation. We present the initial temperature dependence of ACIS CTI from -120 to -60 degrees Celsius and the current temperature dependence after more than six years of continuing slow radiation damage. We use the change of shape of the temperature dependence to speculate on the nature of the damaging particles.
description: 9 pages, 8 figures, to appear in Proc. SPIE vol 6276 "High Energy, Optical, and Infrared Detectors for Astronomy II"
Changing our approach to station design
Creators: name: Harding, John
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 330306
subject: Design practice and methods
classificationCode: 330409
subject: Transport planning
classificationCode: 330312
subject: Service design
classificationCode: 330314
subject: Sustainable design

description: For around fifty years, the rail industry has implemented design processes that are not always aligned with how to address the needs of the user in the early design stages. And these needs are changing, arguably faster than our infrastructure design can keep up. But by learning from other industries and injecting service design thinking early on into our station and depot designs we can make modern, accessible and inclusive spaces that satisfy the requirements of customers, operators and maintainers.
Η κλασική μεταρρυθμιστική παιδαγωγική στις πρώτες δεκαετίες του 20ού αιώνα: αμφισβητήσεις διαπιστώσεις προτάσεις προοπτικές
Creators: name: Πυργιωτάκης, Γεώργιος
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: Aus Anlass der seit der 1.990er Jahre neuen erziehungswissenschaftlichen Diskussion über die Reformpädagogik in den ersten drei Jahrzehnten des 20. Jahrhunderts in Deutschland hat diese Arbeit die Absicht zur einen der¬artigen Diskussinn auch in Griechenland beizutragen. Zunächst wird die Unterscheidung zwischen einer Tendenz, die die Reformpadagogil; in die¬ser Zeit für einzige Erscheinung in der Geschichte der Pädagogik hält, und einer zweiten Tendenz, die sie als eine der verschiedenen reformpädagügi-schen Phasen in vorangehende oder in nachherige Zeiträumen betrachtet, hervorgehoben. Wegen ihrer systematischen Untersuchung werden ansch¬ließend die verschiedenen refonnpädagogischen Tendenzen dieser Zeh auf Grund ihrer gemeinsamen Kennzeichen in fünf reformpädagogischen Strö¬mungen unterschieden, beziehungsweise in; a} "Pädagogik vom Kinde aus", b) "Arbeitsschule", c) 'Troduktions-Koüektivschule", d) "Landerzichungs-heime" und e) "Pädagogische Systeme mit eigenartiger Form". Am Schluss dieser Arbeit werden acht Kriterien angeführt, die zur konsequenten An¬wendung der wesentlichen Grundsätze und Prinzipien dieser refor¬mpädagogischen Strömungen beitragen können.
description: Παιδαγωγική Επιθεώρηση, Vol. 41 (2006)
Improved Weighted Random Forest for Classification Problems
Creators: name: Shahhosseini, Mohsen
name: Hu, Guiping
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Several studies have shown that combining machine learning models in an appropriate way will introduce improvements in the individual predictions made by the base models. The key to make well-performing ensemble model is in the diversity of the base models. Of the most common solutions for introducing diversity into the decision trees are bagging and random forest. Bagging enhances the diversity by sampling with replacement and generating many training data sets, while random forest adds selecting a random number of features as well. This has made the random forest a winning candidate for many machine learning applications. However, assuming equal weights for all base decision trees does not seem reasonable as the randomization of sampling and input feature selection may lead to different levels of decision-making abilities across base decision trees. Therefore, we propose several algorithms that intend to modify the weighting strategy of regular random forest and consequently make better predictions. The designed weighting frameworks include optimal weighted random forest based on ac-curacy, optimal weighted random forest based on the area under the curve (AUC), performance-based weighted random forest, and several stacking-based weighted random forest models. The numerical results show that the proposed models are able to introduce significant improvements compared to regular random forest.
Symmetries and global solvability of the isothermal gas dynamics equations
Creators: name: LeFloch, Philippe G.
name: Shelukhin, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35L65; 76N; 76L05

description: We study the Cauchy problem associated with the system of two conservation laws arising in isothermal gas dynamics, in which the pressure and the density are related by the $γ$-law equation $p(ρ) \sim ρ^γ$ with $γ=1$. Our results complete those obtained earlier for $γ>1$. We prove the global existence and compactness of entropy solutions generated by the vanishing viscosity method. The proof relies on compensated compactness arguments and symmetry group analysis. Interestingly, we make use here of the fact that the isothermal gas dynamics system is invariant modulo a linear scaling of the density. This property enables us to reduce our problem to that with a small initial density. One symmetry group associated with the linear hyperbolic equations describing all entropies of the Euler equations gives rise to a fundamental solution with initial data imposed to the line $ρ=1$. This is in contrast to the common approach (when $γ>1$) which prescribes initial data on the vacuum line $ρ=0$. The entropies we construct here are weak entropies, i.e. they vanish when the density vanishes. Another feature of our proof lies in the reduction theorem which makes use of the family of weak entropies to show that a Young measure must reduce to a Dirac mass. This step is based on new convergence results for regularized products of measures and functions of bounded variation.
description: 29 pages
Missing Dwarf Problem in Galaxy Clusters
Creators: name: Kase, Hiroyuki
name: Makino, Junichiro
name: Funato, Yoko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigated the formation and evolution of CDM subhalos in galaxy-sized and cluster-sized halos by means of N-body simulations. Our aim is to make clear what the ``dwarf galaxy problem'' is. It has been argued that the number of subhalos in simulated galaxy-sized halos is too large compared to the observed number of dwarfs in the local group, while that in cluster-sized halos is consistent with observed number of galaxies in clusters such as the Virgo cluster. We simulated nine halos with several different mass resolutions and physical scales. We found that the dependence of the cumulative number of subhalos N_c on their maximum circular velocity V_c is given by N_c \propto V_c^-3, down to the reliability limit, independent of the mass of the main halo. This implies that simulations for cluster-sized halos give too many halos with V_c ~ 140km/s or less. Previous comparisons of cluster-sized halos gave much smaller number of subhalos in this regime simply because of their limited resolution. Our result implies that any theory which attempts to resolve the missing dwarf problem should also explain the discrepancy of the simulation and observation in cluster-sized halos.
description: 10 pages, 20 figures, submitted to PASJ
Cristina Marras, Metaphora translata voce. Prospettive metaforiche nella filosofia di G. W. Leibniz
Creators: name: Reina, Riccardo
Publisher: name: Università degli Studi di Milano
Year: 2010
Subjects: Cristina Marras, Leibniz, metafora

description: Si recensisce Cristina Marras, Metaphora translata voce. Prospettive metaforiche nella filosofia di G. W. Leibniz, Leo S. Olschki Editore, Firenze, 2010.
description: ENTHYMEMA, No 1 (2010)
Η εκπαίδευση ενηλίκων ως αποστολή : επανεξετάζοντας το ρόλο της εκπαίδευσης ενηλίκων στο πλαίσιο της παγκοσμιοποιημένης τοπικότητας
Creators: name: Καλαουζίδης, Γεώργιος
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: This paper inquiries the apostleship dimension of adult education, which has as a continuous and ultimate goal the achievement of a significant task: the integration of human personality. The analysis emphasizes the humanistic approach of adult education, as Carl Rogers and Peter Jarvis have explicitly described it. It is suggested that the humanistic approach of adult education is the one, which is functionally more appropriate in the framework of globalization. Globalization is considered as the alternative form of individual and collective development, which opposes the reasoning of globalization.
description: Παιδαγωγική Επιθεώρηση, Vol. 41 (2006)