cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Διερεύνηση μαθηματικής επάρκειας μαθητών με Μ.Δ. και μαθητών χωρίς Μ.Δ.:
Creators: name: Κοντάκου, Πετρούλα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: subject: Μαθησιακές Δυσκολίες
subject: Μαθηματικά
subject: Δυσλεξία & δυσφασία
subject: Learning Disabilities
subject: Mathematics
subject: FOS: Mathematics
subject: Dyslexia & Dysphasia

description: Σκοπός της εργασίας είναι η διερεύνηση της μαθηματικής επάρκειας μαθητών με Μ.Δ και μαθητών χωρίς Μ.Δ. Καταγράφονται τα γενικά χαρακτηριστικά των παιδιών με Μαθησιακές Δυσκολίες και παρουσιάζονται οι κατηγορίες των Μαθησιακών Δυσκολιών. Εξετάζονται διεξοδικότερα οι διαταραχές λόγου (δυσφασία) και οι αναγνωστικές δυσκολίες (δυσλεξία) και ιδιαίτερα οι δυσκολίες που αντιμετωπίζουν οι μαθητές αυτοί στα μαθηματικά. Στη συνέχεια παρουσιάζεται η έννοια της μαθηματικής επάρκειας και αναλύονται τα αίτια της χαμηλής επίδοσης του γενικού μαθητικού πληθυσμού στα μαθηματικά. Το δείγμα της έρευνας αποτέλεσαν 56 μαθητές των τριών τελευταίων τάξεων του δημοτικού σχολείου στους οποίους χορηγήθηκαν τα σταθμισμένα ψυχομετρικά κριτήρια Detroit Test of Learning Aptidude (DTLA-4) και το Κριτήριο Μαθηματικής Επάρκειας (για μαθητές ηλικίας 7.06-15.05).
description: The aim of this thesis is to examine the sufficiency in Mathematics that children with and without Learning Difficulties have. Definitions of the term “Learning Difficulties” are given and general characteristics of children with such disabilities are presented. The categories of Learning Disabilities are analyzed, speech disorders (dysphasia) and reading difficulties (dyslexia) are further dealt with. In particular difficulties that students with dyslexia and dysphasia have in Mathematics are presented. The concept of mathematical sufficiency is examined as well as the causes of low performance of the general student population in Mathematics. Our sample consisted of 56 students that attended the three last classes of Primary School and undertook the Detroit Test of Learning Aptidude (DTLA-4) and the Mathematical Sufficiency Criterion (for pupils aged 7.06-15.05).
Electron density and carriers of the diffuse interstellar bands
Creators: name: Gnacinski, P.
name: Sikorski, J. K.
name: Galazutdinov, G. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the ionisation equilibrium equation to derive the electron density in interstellar clouds in the direction to 13 stars. A linear relation was found, that allows the determination of the electron density from the Mg I and Mg II column densities in diffuse clouds. The comparison of normalised equivalent width of 12 DIBs with the electron density shows that the DIBs equivalent width do not change with electron density varying in the range ne=0.01-2.5 cm^-3. Therefore the DIBs carriers (1) can be observed only in one ionisation stage, or (2) the DIBs are arising in cloud regions (eg. cores or cloud coronas) for which we can not determine the electron density.
Grand unification of $μ-τ$ Symmetry
Creators: name: Mohapatra, R. N.
name: Nasri, S.
name: Yu, Hai-Bo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Near maximal neutrino mixing needed to understand atmospheric neutrino data can be interpreted to be a consequence of an interchange symmetry between the muon and tau neutrinos in the neutrino mass matrix in the flavor basis. This idea can be tested by a measurement of the neutrino mixing parameter $θ_{13}$ and looking for its correlation with $θ_{23}-π/4$. We present a supersymmetric SU(5) grand unified model for quarks and leptons which obeys this exchange symmetry and is a realistic model that can fit all observations. GUT embedding shifts $θ_{13}$ from its zero $μ-τ$ symmetric value to a nonzero value keeping it under an upper limit.
description: 13 pages and 4 figures
Correction. Strong invariance principles for sequential Bahadur--Kiefer and Vervaat error processes of long-range dependent sequences
Creators: name: Csörgõ, Miklós
name: Szyszkowicz, Barbara
name: Wang, Lihong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Correction to The Annals of Statistics (2006) 34, 1013--1044 [URL: http://projecteuclid.org/euclid.aos/1151418250]
description: Published in at http://dx.doi.org/10.1214/009053607000000370 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Adiabatic frequency conversion of quantum optical information in atomic vapor
Creators: name: Vewinger, Frank
name: Appel, Juergen
name: Figueroa, Eden
name: Lvovsky, A. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate a quantum communication protocol that enables frequency conversion and routing of quantum optical information in an adiabatic and thus robust way. The protocol is based on electromagnetically-induced transparency in systems with multiple excited levels: transfer and/or distribution of optical states between different signal modes is implemented by adiabatically changing the control fields. The proof-of-principle experiment is performed using the hyperfine levels of the rubidium D1 line.
MPEC 2024-C101 : 2024 AO11
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 AO11

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Generalisation of neuronal excitability allows for the identification of an excitability change parameter that links to an experimentally measurable value
Creators: name: Broek, Jantine A. C.
name: Drion, Guillaume
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: 37N25

description: Neuronal excitability is the phenomena that describes action potential generation due to a stimulus input. Commonly, neuronal excitability is divided into two classes: Type I and Type II, both having different properties that affect information processing, such as thresholding and gain scaling. These properties can be mathematically studied using generalised phenomenological models, such as the Fitzhugh-Nagumo model and the mirrored FHN. The FHN model shows that each excitability type corresponds to one specific type of bifurcation in the phase plane: Type I underlies a saddle-node on invariant cycle bifurcation, and Type II a Hopf bifurcation. The difficulty of modelling Type I excitability is that it is not only represented by its underlying bifurcation, but also should be able to generate frequency while maintaining a small depolarising current. Using the mFHN model, we show that this situation is possible without modifying the phase portrait, due to the incorporation of a slow regenerative variable. We show that in the singular limit of the mFHN model, the time-scale separation can be chosen such that there is a configuration of a classical phase portrait that allows for SNIC bifurcation, zero-frequency onset and a depolarising current, such as observed in Type I excitability. Using the definition of slow conductance, g_s, we show that these mathematical findings for excitability change are translatable to reduced conductance based models and also relates to an experimentally measurable quantity. This not only allows for a measure of excitability change, but also relates the mathematical parameters that indicate a physiological Type I excitability to parameters that can be tuned during experiments.
description: 21 pages, 10 main figures, 3 supplementary figures
Callan-Symanzik equations and low-energy theorems with trace anomalies
Creators: name: Yang, J. -F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Basing on some new and concise forms of the Callan-Symanzik equations, the low-energy theorems involving trace anomalies à la Novikov-Shifman-Vainshtein-Zakharov, first advanced and proved in Nucl. Phys. \textbf{B165}, 67 (1980), \textbf{B191}, 301 (1981), are proved as immediate consequences. The proof is valid in any consistent effective field theories and these low-energy theorems are hence generalized. Some brief discussions about related topics are given.
description: 6 pages, no figure, Revtex4, revised version
Demonstration of the difference Casimir force for samples with different charge carrier densities
Creators: name: Chen, F.
name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
name: Mohideen, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A measurement of the Casimir force between a gold coated sphere and two Si plates of different carrier densities is performed using a high vacuum based atomic force microscope. The results are compared with the Lifshitz theory and good agreement is found. Our experiment demonstrates that by changing the carrier density of the semiconductor plate by several orders of magnitude it is possible to modify the Casimir interaction. This result may find applications in nanotechnology.
description: 4 pages, 4 figures, to appear in Phys. Rev. Lett
Μελέτη της προσρόφησης του αντικαρκινικού φαρμάκου ταξόλη σε μεσοπορώδη πυριτία και μικροενθυλάκωση του σε συμπολυμερές πολυ(γαλακτικού-co-γλυκολικού οξέος):
Creators: name: Ζαχαριάδου, Δωροθέα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ταξόλη
Μεσοπορώδης πυριτία
Μικροσωματίδια
Taxol
Mesoporous silica
Microparticles

description: Σκοπός της διατριβής ήταν η μελέτη της προσρόφησης του αντικαρκινικό φαρμάκου ταξόλη σε μεσοπορώδη πυριτία για τη χορήγηση της χωρίς τη χρήση εκδόχων που προκαλούν παρενέργειες και η μετέπειτα μικροενθυλάκωση της σε συμπολυμερές πολύ(γαλακτικού-co-γλυκολικού) οξέος για την ελεγχόμενη αποδέσμευση της. Εξετάσαμε την προσρόφηση σε διαφορετικούς διαλύτες και διαφορετικές συγκεντρώσεις φαρμάκου. Επιπλέον εξετάσαμε τη δυνατότητα μικροενθυλάκωσης της πυριτίας με την καλύτερη προσρόφηση φαρμάκου σε δύο είδη συμπολυμερούς πολύ(γαλακτικού-co-γλυκολικού) οξέος με διαφορετική αναλογία των μονομερών. Στη συνέχεια παρουσιάσαμε αναλυτικά τα χαρακτηριστικά των πυριτιών με το προσροφημένο φάρμακο και τα προφίλ αποδέσμευσης του φαρμάκου τόσο από τις πυριτίες όσο και από τα μικροσωματίδια.
description: The aim of the present thesis was the study of adsorption of anticancer drug taxol in mesoporous silica for administration without the use of excipients that cause side-effects and afterwards its microencapsulation in poly(lactic-co-glycolic) copolymer to achieve controlled release. We examined the adsorption using different solvents and different drug concentrations. Furthermore we also examined the microencapsulation ability of the silica with the best drug loading with two poly(lactic-co-glycolic) copolymers with different monomer ratio . Then we presented the features of the silicas with the adsorbed drug and the drug release profiles from the silica and the microparticles.
Αυτοπροσδιορισμός, Ποιότητα Ζωής και Κοινωνικές Σχέσεις Ενηλίκων με Νοητικά Προβλήματα:
Creators: name: Μανδυλά, Μαρία-Αικατερίνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Αυτοπροσδιορισμός
Κοινωνική Ένταξη/Ενσωμάτωση
Ποιότητα Ζωής
Self-determination
Social Inclusion
Quality of Life

description: Σκοπός της εργασίας ήταν η παρουσίαση των διαστάσεων του αυτοπροσδιορισμού, της κοινωνικής ένταξης/ενσωμάτωσης και της ποιότητας ζωής σε ενήλικες με νοητικά προβλήματα, κυρίως όπως την αντιλαμβάνονται τα ίδια τα άτομα. Επίσης, έχουν καταγραφεί οι ανάγκες και οι επιθυμίες τους σχετικά με την κοινωνικοποίησή τους. Παράλληλα, εξετάστηκαν οι αντιλήψεις των μητέρων και των εργαζομένων των συλλόγων όπου απασχολούνται αναφορικά με τις δυνατότητες και δυσκολίες τους και τις διαπροσωπικές σχέσεις. Αρχικά, παρουσιάστηκε το θεωρητικό υπόβαθρο σχετικά με τη νοητική καθυστέρηση σε σχέση με τη νοημοσύνη, την προσαρμοστική συμπεριφορά, την ταξινόμηση και τα κοινωνικά χαρακτηριστικά των ατόμων με νοητικά προβλήματα. Στη συνέχεια, παρουσιάστηκε ο τρόπος με τον οποίο σχετίζονται ο αυτοπροσδιορισμός και η κοινωνική ένταξη/ενσωμάτωση με την ποιότητα ζωής, καθώς επίσης το στίγμα και η περιθωριοποίηση που παρατηρείται συγκριτικά με άτομα τυπικής ανάπτυξης. Τέλος, έγινε μια σύνοψη των βασικών συμπερασμάτων σχετικά με τα κοινωνικά χαρακτηριστικά και το πλαίσιο στο οποίο δρουν όπως αποτυπώθηκε από το λόγο των ατόμων με νοητικά προβλήματα και τους σημαντικούς άλλους.
description: The aim of the present thesis was the study of self-determination, social inclusion and quality of life in adults with mental retardation, mainly as these terms are perceived by themselves. Also, the presentation of their needs regarding the quality of interpersonal relationships. Simultaneously, the concepts of their mothers and care-givers were taken into account. Firstly, it’s being reported the theoretical background about mental retardation, intelligence, adaptive behavior, categorization and the social characteristics in individuals with mental problems. Then, it was presented the relationship among self-determination and social interaction with quality of life. Moreover, the views of individuals with mental problems, their mothers’ and their care-givers’ about stigma and social exclusion were noted.
Quasi-One-Dimensional Spin-Density-Wave States with Two Kinds of Periodic Potentials and a Interchain Misfit
Creators: name: Itakura, Toshifumi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin density wave (SDW) states of a quasi-one-dimensional system with an incommensurate wave vector perpendicular to the chain have been studied in the presence of two kinds of commensurate potentials, which originate in a quarter-filled band and dimerization along the chain. In terms of a phase variable of the SDW order parameter, we treat classically the two-dimensional Hamiltonian, which includes both acoustic excitations with long wave length and a vortex excitation with short wave length. A phase diagram on the plane of temperature and chemical potential (where the latter corresponds to the deviation of the transverse wave vector from the commensurate one) exhibits a variety of states given by the commensurate SDW state without charge density, the commensurate SDW state with charge density, the incommensurate SDW state and the disordered state.
Asymptotic Dimension of Discrete Groups
Creators: name: Dranishnikov, A.
name: Smith, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F69

description: We extend Gromov's notion of asymptotic dimension of finitely generated groups to all discrete groups. In particular, we extend the Hurewicz type theorem proven in [B-D2] to general groups. Then we use this extension to prove a formula for the asymptotic dimension of finitely generated solvable groups in terms of their Hirsch length.
description: 8 pages
A novel quad-channel 10 Gbps CMOS VCSEL array driver with integrated charge pumps
Creators: name: Huang, X.
name: Gong, D.
name: Guo, D.
name: Hou, S.
name: Huang, G.
name: Kulis, S.
name: Liu, C.
name: Liu, T.
name: Moreira, P.
name: Rodríguez, A. Sánchez
name: Sun, H.
name: Sun, Q.
name: Troska, J.
name: Xiao, L.
name: Zhang, L.
name: Zhang, W.
name: Ye, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present a novel design and the test results of a 4-channel driver for an array of Vertical-Cavity Surface-Emitting Lasers (VCSELs). This ASIC, named cpVLAD and fabricated in a 65 nm CMOS technology, has on-chip charge pumps and is for data rates up to 10 Gbps per channel. The charge pumps are implemented to address the issue of voltage margin of the VCSEL driving stage in the applications under low temperature and harsh radiation environment. Test results indicate that cpVLAD is capable of driving VCSELs with forward voltages of up to 2.8 V using 1.2 V and 2.5 V power supplies with a power consumption of 94 mW/channel.
description: 15 pages, 20 figures
Η θαλάσσια φορτωτική και άλλα παρόμοια έγγραφα της ναυτικής πρακτικής:
Creators: name: Μήττα, Στέλλα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Φορτωτική
Περιεχόμενο
Λειτουργίες
Bill of lading
Content
Functions

description: Σκοπός της διατριβής ήταν η μελέτη της θαλάσσιας φορτωτικής και η παρουσίαση άλλων εγγράφων της ναυτικής πρακτικής παρόμοιων με τη φορτωτική. Αρχικά, εξετάσαμε τα είδη της θαλάσσιας φορτωτικής και το νομοθετικό πλαίσιο, στο οποίο υπόκειται. Στη συνέχεια, παρουσιάσαμε αναλυτικά τον τρόπο έκδοσης της φορτωτικής, καθώς και τα στοιχεία του περιεχομένου της, διακρίνοντας σε απαριθμούμενα στο νόμο και σε παραλειφθέντα στοιχεία. Επιπλέον, αναφερθήκαμε διεξοδικά στις τρεις λειτουργίες της φορτωτικής και συγκεκριμένα στην αποδεικτική, την εμπράγματη και την αξιογραφική της λειτουργία. Ακόμη, ασχοληθήκαμε με την περιγραφή και τη σύγκριση σε σχέση με τη φορτωτική άλλων παρόμοιων εγγράφων, και συγκεκριμένα αναφερθήκαμε στη διαταγή παράδοση, στη διαφορτωτική και στο σημείωμα κράτησης θέσης. Τέλος, θίξαμε το θέμα της υποκατάστασης της θαλάσσιας φορτωτικής από άλλα έγγραφα, όπως η σύντομη φορτωτική και το δελτίο θαλάσσιας μεταφοράς, αλλά και το ζήτημα της αποϋλοποίησης της φορτωτικής με την εφαρμογή της ηλεκτρονικής φορτωτικής.
description: The aim of the present thesis was the study of bill of lading and the presentation of other documents of the shipping practice, similar to the bill of lading. Firstly, we examined the different kinds of bill of lading, as well as the legislative framework which applies to the bill of lading. Then, we presented in detail how the bill of lading is issued, and also the content of the bill of lading by distinguishing in listed in the law elements and in omitted elements. Furthermore, we analyzed the three functions of bill of lading, and we especially saw the bill of lading as evidence, as document of title to the loaded goods and as a document that can be transferred by endorsement. In addition, we examined in comparison to the bill of lading other shipping documents, such as the delivery order, the through bill of lading and the booking note. Finally, we presented the matter of the substitution of the bill of lading by other documents, such as the short-form bill of lading and the sea waybill, and also the problem of the dematerialization of the bill of lading, by using the electronic bill of lading.
Determination of the effective strong coupling constant alpha_{s,g_1}(Q^2) from CLAS spin structure function data
Creators: name: Deur, A.
name: Burkert, V.
name: Chen, J. P.
name: Korsch, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new extraction of the effective strong coupling constant α_{s,g_1}(Q^2). The result agrees with a previous determination and extends the measurement of the low and high Q^2 behavior of α_{s,g_1}(Q^2) that was previously deduced from sum rules. In particular, it experimentally verifies the lack of Q^2-dependence of α_{s,g_1}(Q^2) in the low Q^2 limit. This fact is necessary for application of the AdS/CFT correspondence to QCD calculations. We provide a parameterization of α_{s,g_1}(Q^2) thatcan equivalently be used to parameterize the Q^2-dependence of the generalized Gerasimov-Drell-Hearn and Bjorken sums.
description: Updated to the version published in PLB (minor modifications)
Πλουτάρχου Περί παίδων αγωγής:
Creators: name: Σιαμαντούρα, Σωτηρία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πλούταρχος
Αγωγή
Παιδιά
Plutarch
Education
Children

description: Το παρόν κείμενο έχει μελετηθεί διεξοδικά από πολλούς έλληνες και άλλους ξένους μελετητές. Έχει επανειλημμένα επανεκδοθεί, μεταφραστεί και σχολιαστεί. Τα στοιχεία που αποτέλεσαν το υλικό του συγκεκριμένου πονήματος. Στόχος της εργασίας είναι να παρουσιάσει αυτά τα στοιχεία εμπλουτισμένα με τα πιο πρόσφατα βιβλιογραφικά δεδομένα. Η παρούσα εργασία απαρτίζεται από τέσσερα μέρη. Στο πρώτο μέρος μελετώνται γενικά θέματα που αφορούν τον συγγραφέα, αλλά και την πραγματεία Περὶ παίδων ἀγωγῆς. Πιο συγκεκριμένα, αναλύονται ζητήματα που αφορούν τον βίο του Πλουτάρχου, το έργο του, τις επιδράσεις που έχει δεχθεί από προγενέστερους συγγραφείς, την παιδαγωγική του θεωρία, αλλά και την γνησιότητα του έργου, την χειρόγραφη παράδοση και τις σχολιασμένες εκδόσεις. Το δεύτερος μέρος περιλαμβάνει την μετάφραση, το πρωτότυπο κείμενο και ένα υπόμνημα κριτικών προτάσεων, δηλαδή τις διάφορες γραφές της άμεσης παράδοσης και τις προτάσεις των κατά καιρούς κριτικών, εκδοτών και άλλων μελετητών του κειμένου (variae lectiones). Στο τρίτο μέρος σχολιάζονται διάφορα χωρία της πραγματείας, με βάση τα βιβλιογραφικά δεδομένα. Επίσης, παρατίθενται και τα παράλληλα χωρία (loci similes), δηλαδή οι πηγές τις οποίες χρησιμοποίησε ή φαίνεται να είχε υπόψη του ο συγγραφέας. Τέλος, στο τέταρτο μέρος παρουσιάζονται οι περιλήψεις, ελληνική και αγγλική, πίνακες και τα βιβλιογραφικά δεδομένα που χρησιμοποιήθηκαν κατά τη σύνθεση της παρούσης.
description: The present text has been studied by numerous Greek and other foreign scholars, has been repeatedly published, translated and annotated These elements constituted the material of this essay. This work aims to present these issues, enriched by the most recent bibliographic data. This work consists of four parts. The first part examines general matters that the author is concerned about, but also the treatise De liberis educandis. More specifically the issues which are analyzed concern Plutarch's life, his work, the influence by previous authors, his educational theory, but also the authenticity of this work, the manuscript tradition and the commentaries. The second part includes the translation, the original text and one memorandum with critical suggestions, i. e the different writings of the immediate tradition and the suggestions of various critics, editors and other scholars of the text (variae lectiones). In the third part many passages of the treatise are annotated, based on existing bibliographic data. Moreover parallel passages (loci similes) are listed alongside, i. e the sources that the writer used or seems to have in mind. Finally, the fourth part presents the summaries, greek and english, the indexes and the bibliographic data, that has been used in the composition of this essay.
A gridded establishment dataset as a proxy for economic activity in China
Creators: name: Dong, Lei
name: Yuan, Xiaohui
name: Li, Meng
name: Ratti, Carlo
name: Liu, Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Measuring the geographical distribution of economic activity plays a key role in scientific research and policymaking. However, previous studies and data on economic activity either have a coarse spatial resolution or cover a limited time span, and the high-resolution characteristics of socioeconomic dynamics are largely unknown. Here, we construct a dataset on the economic activity of mainland China, the gridded establishment dataset (GED), which measures the volume of establishments at a 0.01$^{\circ}$ latitude by 0.01$^{\circ}$ longitude scale. Specifically, our dataset captures the geographically based opening and closing of approximately 25.5 million firms that registered in mainland China over the period 2005-2015. The characteristics of fine granularity and long-term observability give the GED a high application value. The dataset not only allows us to quantify the spatiotemporal patterns of the establishments, urban vibrancy and socioeconomic activity, but also helps us uncover the fundamental principles underlying the dynamics of industrial and economic development.
Νίκος Καζαντζάκης, Ταξιδεύοντας˙ Αίγυπτος: Ποικίλες ερμηνευτικές είσοδοι.:
Creators: name: Προκοπίου, Μαριάνθη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Νίκος Καζαντζάκης
Ταξιδεύοντας˙ Αίγυπτος
Ερμηνευτικές προσεγγίσεις
Nikos Kazantzakis
Journeying˙ Egypt
Interpretative approaches

description: Με την παρούσα εργασία επιχειρείται μία πολυδιάστατη προσέγγιση του έργου της ταξιδιωτικής λογοτεχνίας Ταξιδεύοντας˙ Αίγυπτος του Νίκου Καζαντζάκη. Στο πρώτο μέρος τίθενται πολλά ζητήματα προς διερεύνηση, όπως για παράδειγμα η διαπραγμάτευση του θεωρητικού πλαισίου του λογοτεχνικού είδους της ταξιδιωτικής αφήγησης, η συμβολή του Καζαντζάκη στην αποκρυστάλλωση του είδους στην Ελλάδα, η λογοτεχνική αναπαράσταση της Αιγύπτου από σύγχρονούς του συγγραφείς, τα πραγματολογικά στοιχεία προπαρασκευής του ταξιδιού και η σημασία αυτού για τον ίδιο και το έργο του κ.λπ. Το δεύτερο μέρος συνιστά μία προσπάθεια κοινωνικοπολιτικής ανάγνωσης και ερμηνείας του ταξιδιού του συγγραφέα στην Αίγυπτο, από την οποία προκύπτει ο εκ βάθρων αποδομητικός του λόγος απέναντι στις εξουσιαστικές δομές του οριενταλισμού. Ο τελευταίος, υπό το ηθικολογικό πέπλο ενός κίβδηλου κοσμοπολιτισμού, υπέκρυπτε επιμελώς τον αποικιοκρατικό ιμπεριαλισμό της Δύσης σε βάρος της Ανατολής. Ενάντια σ’ αυτόν λοιπόν ο συγγραφέας καταφέρεται με σφοδρότητα, χαιρετίζοντας με ενθουσιασμό τις πρώτες ενδείξεις αφύπνισης του ανατολικού κόσμου με πρωτεργάτη την Αίγυπτο. Ιδεολογικός του δείκτης είναι η αφοσίωσή του στην «πλέρια λευτεριά», η οποία εκείνη την περίοδο πίστευε ότι μπορούσε να επιτευχθεί μέσω του κομμουνισμού. Απώτερος στόχος είναι η έξοδος της ανθρωπότητας από το τέλμα της μεταβατικής εποχής, όπως αυτή εγχαράσσεται στην προσωπικότητα και το έργο του ποιητή Κ. Π. Καβάφη.
description: This post-graduate essay examines a multidimensional approach of Nikos Kazantzakis’ work in literature about travelling in the piece called Journeying˙ Egypt. In the first part, many issues are evaluated, for example the theoretical framework of travel writing, the contribution of Kazantzakis to the crystallization of this genre in Greece, the literature brings to life Egypt’s current authors, the factual information of the preparation of that journey, its importance of travel for the writer himself and his work. The second part constitutes an effort towards a sociopolitical approach of the author’s journey in Egypt from which a deep study of his work compares against the controlling structures of orientalism. The latter, under a moral veil of misrepresented cosmopolitanism, concealed thoroughly the Western colonial imperialism against the East. So, in opposition to the orientalism the writer strongly objects to this, by befriending with enthusiasm the first indications of the awakening of the Eastern world with Egypt being the leader. His ideological index is his dedication to the entire freedom, which in that period he believed that could be achieved through communism. The ultimate goal is the exit of humanity from the pit of the transitional period, as reflected in the personality and work of K. P. Kavafi.
Σταθεροποιητής τάσης πολύ χαμηλής ενεργειακής κατανάλωσης για εφαρμογές ασύρματων δικτύων αισθητήρων:
Creators: name: Γαβράς, Αβραάμ Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Σταθεροποιητής τάσης
Voltage regulator
Low power

description: Η παροχή και η ρύθμιση της τάσης τροφοδοσίας ενός ηλεκτρονικού κυκλώματος αποτελεί μεγάλη πρόκληση. Είναι γεγονός πως οι συνήθεις πηγές ισχύος εμφανίζουν σημαντικές διακυμάνσεις στην τάση και στο ρεύμα που παρέχουν, ως εκ τούτου η χρήση ενός σταθεροποιητή τάσης μεταξύ πηγής ισχύος και ενός κυκλώματος αποτελεί μονόδρομο. Η εργασία αυτή πραγματεύεται την σχεδίαση ενός γραμμικού σταθεροποιητή τύπου Low-Dropout με κύριο χαρακτηριστικό την πολύ μικρή κατανάλωση ρεύματος στην κατάσταση ηρεμίας. Η ευστάθεια του συστήματος εξασφαλίζεται τόσο με εσωτερική όσο και με εξωτερική αντιστάθμιση. Για την εσωτερική αντιστάθμιση χρησιμοποιείται ένας πυκνωτής 20pF ενώ για την εξωτερική ένας 4.7uF. Ο σταθεροποιητής ο οποίος λειτουργεί με τάσεις εισόδου 3.5V έως 4.2V έχει την ικανότητα να παρέχει μέγιστο ρεύμα στο φορτίο από 7 μέχρι και 10 mA ενώ η τάση εξόδου του ορίζεται στα 3.3V.Χωρίς την ύπαρξη φορτίου το ρεύμα πόλωσης του σταθεροποιητή κυμαίνεται στα 500nA με την μέγιστη απόδοση ισχύος να φτάνει το 94.1%. Πέραν του ενισχυτή σφάλματος και του δικτυώματος της ανάδρασης έχουν σχεδιαστεί μια πηγή ρεύματος 20 nA, ένα δικτύωμα μείωσης υπερύψωσης τάσης (overshoot) καθώς και ένα κύκλωμα προστασίας από βραχυκύκλωμα. Η υπερύψωση τάσης για είσοδο 3.5V είναι στα 43.64 mV και για 4.2V, στα 55.4mV, ενώ η επιφάνεια ολοκλήρωσης δεν ξεπερνά τα 0.053 mm2. Κλείνοντας στο τέλος της εργασίας γίνεται αντιπαραβολή των αποτελεσμάτων της προ-φυσικής σχεδίασης με της μετά-φυσικής σχεδίασης του σταθεροποιητή όπως βέβαια και σύγκριση με άλλους σταθεροποιητές.
description: For an electronic circuit supplying and conditioning of supply voltage constitutes one of the biggest challenges. It is a fact that the usual power sources exhibit considerable voltage and current variations therefore the usage of voltage regulator between power supply and electronic circuit is necessary. In this work is presented a low quiescent current Low Dropout voltage regulator with two type of compensation. For external compensation is used a 4.7uF capacitor and for internal a 20pF capacitor. The input voltage range of regulator extends from 3.5V to 4.2V and the maximum load current from 7mA to 10mA while the output is specified in 3.3V. Also when no load is connected to the regulator, the quiescent current of LDO does not exceed 500nA so the maximum power efficiency is close to 94.1%. Despite of the error amplifier and feedback network it has been designed, a 20nA current source, an overshoot reduction system and a short-circuit protection circuit. For 3.5V input voltage the overshoot is 43.64mV and for 4.2V is 55.4mV. Although the several sub-circuits that described above, the whole area of regulator does not exceed 0.053mm2. Closing at the end of the work is made a comparison of the results of the pre-layout design to post-layout design of the regulator as course comparison with other works.
Competing impurities and reentrant magnetism in La(2-x)Sr(x)Cu(1-z)Zn(z)O(4) revisited. The role of the Dzyaloshinskii-Moriya and XY anisotropies
Creators: name: Adamska, L.
name: Neto, M. B. Silva
name: Smith, C. Morais
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the order-from-disorder transition and reentrant magnetism in La(2-x)Sr(x)Cu(1-z)Zn(z)O(4) within the framework of a long-wavelength nonlinear sigma model that properly incorporates the Dzyaloshinskii-Moriya and XY anisotropies. Doping with nonmagnetic impurities, such as Zn, is considered according to classical percolation theory, whereas the effect of Sr, which introduces charge carriers into the CuO(2) planes, is described as a dipolar frustration of the antiferromagnetic order. We calculate several magnetic, thermodynamic, and spectral properties of the system, such as the antiferromagnetic order parameter, the Neel temperature, the spin-stiffness, and the anisotropy gaps, as well as their evolution with both Zn and Sr doping. We explain the nonmonotonic and reentrant behavior experimentally observed for T_N by Hucker et al. in Phys. Rev. B 59, R725 (1999), as resulting from the reduction, due to the nonmagnetic impurities, of the dipolar frustration induced by the charge carriers (order-from-disorder). Furthermore, we find a similar nonmonotonic and reentrant behavior for all the other observables studied. Most remarkably, our results show that while for x=2% and z=0 the Dzyaloshinskii-Moriya gap Δ_{DM}=0, for z=15% it is approximately Δ_{DM} = 7.5 cm^(-1). The later is larger than the lowest low-frequency cutoff for Raman spectroscopy (~ 5 cm^(-1)), and could thus be observed in one-magnon Raman scattering.
description: 13 pages, 10 figures
Η επίδοση και η χρήση στρατηγικών κατανόησης στο μάθημα της ιστορίας σε γηγενείς και δίγλωσσους μαθητές δημοτικού με μαθησιακές δυσκολίες.:
Creators: name: Παπαδοπούλου, Ελένη Μιλτιάδη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: στρατηγικές
επίδοση
ιστορία
use of strategies
performance
history

description: Η παρούσα εργασία διερεύνησε την επίδοση και τη χρήση στρατηγικών στο μάθημα της ιστορίας σε μαθητές με μαθησιακές δυσκολίες και μαθητές Ρωσοποντιακής καταγωγής που φοιτούν στην ε΄ και στ΄ δημοτικού. Επίσης στόχος ήταν να διερευνηθεί τυχόν συσχέτιση μεταξύ της χρήσης στρατηγικών και της επίδοσης των μαθητών.Η έρευνα διεξήχθη κατά το σχολικό έτος 2013- 2014,σε δημοτικά σχολειά της πόλης των Γιαννιτσών. Το δείγμα της έρευνας αποτέλεσαν 60 μαθητές που ικανοποιούσαν τις προϋποθέσεις για τη συμμετοχή στην έρευνα. Η επίδοση των μαθητών στην ιστορία μετρήθηκε σε ανάλογα τεστ που δημιουργήθηκαν από την ερευνήτρια. Στη συνέχεια αξιολογήθηκαν οι στρατηγικές που χρησιμοποίησαν οι μαθητές καθώς έλυναν τις ασκήσεις των τεστ, με βάση μια κλείδα αξιολόγησης που δημιουργήθηκε από την ερευνήτρια. Τα αποτελέσματα της έρευνας έδειξαν ότι οι μαθητές με μαθησιακές δυσκολίες παρουσιάζουν χαμηλότερη επίδοση στα τεστ σε σχέση με τους μαθητές Ρωσοποντιακής καταγωγής και ότι η χαμηλή επίδοση συνδέεται με χρήση αναποτελεσματικών στρατηγικών. Τέλος παρατηρήθηκε ότι οι δυο ομάδες μαθητών χρησιμοποιούν διαφορετικές στρατηγικές για την επίλυση των ασκήσεων.
description: The current report investigated the strategies' performance and the use of strategies in history classes for students with learning disabilities and students of Russian-Pontiac origin in fifth and sixth grade. Additionally, the aim was to examine any correlation between the use of strategies and the performance of students.The survey was conducted during the school year 2013-2014 in primary schools in the city of Giannitsa. The sample for the research was consisted of 60 students who met the requirements for participation in the survey. The performance of the students, in the history class, was measured through tests created by the researcher. Subsequently, the strategies used by the students while solving these tests were evaluated through an assessment scale also generated by the researcher. The results indicated that students with learning disabilities had lower performance on the tests compared to students of Russian-Pontiac origin and that low performance is associated with the use of inefficient strategies. Lastly, it was observed that the two groups of students use different strategies for solving the exercises.
Responding to racism: measuring the effectiveness of an anti-racism program for secondary schools
Creators: name: Culhane, Stephen F.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis reports on the effectiveness of an anti-racist training program implemented at secondary schools in Vancouver and Richmond in February and March of 1995. The program used Responding to Racism; a guide for High School Students, prepared by the author, with John Kehoe and Lily Yee. Training involved three hours of anti-racist role-play exercises from Responding to Racism. A pretest-posttest control group design was employed to measure: retention of given models for dealing with racist incidents, post-treatment levels of racism, and behavioral reactions during a staged racist incident. Ten social studies classes from two schools made up a sample population of 262 students. Following half-day workshops, three teachers carried out the program with a total of six classes of either grade 9 or 11 students. Four additional classes continued with regular curriculum to serve as the Control sample. The Cultural Diversity Scale (Kehoe, 1982, 1984), was given as a pretest to establish Control to Experimental group equivalency. A posttest Written Response to Racist Incidents instrument, used to measure knowledge of how to respond to a racist incident, found a significant positive difference between Experimental and Control groups, (t=(3.83) p.<.001). Post-training levels of racism, evaluated through the Evidence of Racism Scale, were not significantly different (+.16Sd). The final postmeasure, the Racist Incident Behavioral Scale (Culhane, 1995), found significant positive effect among a sample of 68 students (40-Exp./28-Cntl.), (t=(3.33) p.<.001). Students undergoing treatment were in the 68th percentile of Control students on the Written Response to Racist incidents, (+.47Sd), and the 92nd percentile (+1.23Sd) of Control subjects on results from the Racist Incident Behavioral Scale. Experimental students did not show significant difference when compared to Control subjects on items pertaining to empathy for the victims of racism. The results suggest the program was most successful in changing behaviour, over attitudes, within the context of a relatively short-term time period. Responding to Racism provided students with methods for responding to racist incidents which were evident on written and behavioral measures. Support given to the victims of the racist incidents, opposition to the perpetrators, and positive attempts to limit the racism in each incident were all significantly more apparent in responses of Experimental students over Control. The results reaffirm the utility of role-play anti-racist training, and validate the use of Responding to Racism as an effective package for use in secondary school settings, notably in regards to changing student behaviour in racially-motivated situations.
Qian Jian and His Contribution to Small-Scale Turbulence Studies
Creators: name: Shi, John Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Qian Jian, a Chinese theoretical physicist and fluid dynamicist, devoted the second part of his scientific life to the physical understanding of small-scale turbulence to the exclusion of all else. Qian developed his own statistical theory of small-scale turbulence, based on the Liouville (1853) equation and a perturbation variational approach to non-equilibrium statistical mechanics, which is compatible with the Kolmogorov-Oboukhov energy spectrum. His statistical theory of small-scale turbulence, which appears mathematically and physically valid, successfully led to his contributions to (i) the closure problem of turbulence; (ii) one-dimensional turbulence; (iii) two-dimensional turbulence; (iv) the turbulent passive scalar field; (v) the cascade model of turbulence; (vi) the universal equilibrium range of turbulence; (vii) a simple model of the bump phenomenon; (viii) universal constants of turbulence; (ix) the intermittency of turbulence; and perhaps most importantly, (x) the effect of the Taylor microscale Reynolds number on both the width of the inertial range of finite Re turbulence and the scaling exponents of velocity structure functions. In particular, Qian found that the inertial range cannot exist when Re is smaller than 2000. In contrast to the prevailing intermittency models, he discovered that normal scaling is valid in the real Kolmogorov inertial range when Re approaches infinity while the anomalous scaling observed in experiments reflects the finite Re effect. He then made a correction to the famous Kolmogorov (1941c) equation and obtained the finite Re effect equation or the Kolmogorov-Novikov-Qian equation. He also independently derived the decay law of the finite Re effect. Qian steered us along the right path to an improved understanding of small-scale turbulence and solutions to its problems.
Self sustained traversable wormholes and the equation of state
Creators: name: Garattini, Remo
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the graviton one loop contribution to a classical energy in a \textit{traversable} wormhole background. The form of the shape function considered is obtained by the equation of state $p=ωρ$. We investigate the size of the wormhole as a function of the parameter $ω$. The investigation is evaluated by means of a variational approach with Gaussian trial wave functionals. A zeta function regularization is involved to handle with divergences. A renormalization procedure is introduced and the finite one loop energy is considered as a \textit{self-consistent} source for the traversable wormhole.The case of the phantom region is briefly discussed.
description: Uses RevTeX 4. 21 pages. Submitted to Classical and Quantum Gravity. Extended version of the talk given at ERE2006 (Palma de Mallorca, September 4-8, 2006) and of the talk given at MG11-GT5, Berlin, 23-29 July, 2006
Integrated curricular programming for art education : a comparative study
Creators: name: Dyne, Karen Lea
Publisher: name: University of British Columbia
Year: 2009

description: This qualitative study compares an "integrated" art program with a "discipline-oriented" art program at the grade eight level in two Ontario public schools. Data were collected through ethnographic interview and observation. The comparison is based upon the intentional, curricular, structural and evaluative dimensions of schooling as outlined by Eisner (1991). The study indicates that integrative practices are complex and multi- dimensional. Integrated outcomes occur and may be cultivated within a discipline-oriented school structure.
Anomalous Lorenz number in massive and tilted Dirac systems
Creators: name: Sengupta, Parijat
name: Bellotti, Enrico
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analytically calculate the anomalous transverse electric and thermal currents in massive and tilted Dirac systems, using $ β$-borophene as a representative material, and report on conditions under which the corresponding Lorenz number $\left(\mathcal{L}_{an}\right)$ deviates from its classically accepted value $\left(\mathcal{L}_{0}\right)$. The deviations in the high-temperature regime are shown to be an outcome of the quantitative difference in the respective kinetic transport expressions for electric $\left(σ\right)$ and thermal $\left(κ\right)$ conductivity, and are further weighted through a convolution integral with a non-linearly energy-dependent Berry curvature that naturally arises in a Dirac material. In addition, the tilt and anisotropy of the Dirac system that are amenable to change via external stimulus are found to quantitatively influence $ \mathcal{L}_{an} $. The reported deviations from $\mathcal{L}_{0} $ hold practical utility inasmuch as they allow an independent tuning of $σ$ and $ κ$, useful in optimizing the output of thermoelectric devices.
description: 4 pages; 5 figures
Detection of VHE radiation from the BL Lac PG 1553+113 with the MAGIC telescope
Creators: name: al., J. Albert et
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In 2005 and 2006, the MAGIC telescope has observed very high energy gamma-ray emission from the distant BL Lac object PG 1553+113. The overall significance of the signal is 8.8 sigma for 18.8h observation time. The light curve shows no significant flux variations on a daily time-scale, the flux level during 2005 was, however, significantly higher compared to 2006. The differential energy spectrum between ~90 GeV and 500 GeV is well described by a power law with photon index Gamma = 4.2 +- 0.3. The combined 2005 and 2006 energy spectrum provides an upper limit of z=0.74 on the redshift of the object.
description: version accepted for publication in ApJ Letters, 6 pages, 4 figures Removed unnecessary compendium
The Interplay Between the "Low" and "High" Energy CP-Violation in Leptogenesis
Creators: name: Molinaro, E.
name: Petcov, S. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyse within the "flavoured" leptogenesis scenario of baryon asymmetry generation, the interplay of the "low energy" CP-violation, originating from the PMNS neutrino mixing matrix $U$, and the "high energy" CP-violation which can be present in the matrix of neutrino Yukawa couplings, $λ$, and can manifest itself only in "high" energy scale processes. The type I see-saw model with three heavy right-handed Majorana neutrinos having hierarchical spectrum is considered. The "orthogonal" parametrisation of the matrix of neutrino Yukawa couplings, which involves a complex orthogonal matrix $R$, is employed. In this approach the matrix $R$ is the source of "high energy" CP-violation. Results for normal hierarchical (NH) and inverted hierarchical (IH) light neutrino mass spectrum are derived in the case of decoupling of the heaviest RH Majorana neutrino. It is shown that taking into account the contribution to $Y_B$ due to the CP-violating phases in the neutrino mixing matrix $U$ can change drastically the predictions for $Y_B$, obtained assuming only "high energy" CP-violation from the $R$-matrix is operative in leptogenesis. In the case of IH spectrum, in particular, there exist significant regions in the corresponding parameter space where the purely "high energy" contribution in $Y_B$ plays a subdominant role in the production of baryon asymmetry compatible with the observations.
description: Results unchanged; comments and references added; version to be puplished in Eur.Phys.J.C