cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Space-time evolution of hadronization
Creators: name: Accardi, Alberto
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Beside its intrinsic interest for the insights it can give into color confinement, knowledge of the space-time evolution of hadronization is very important for correctly interpreting jet-quenching data in heavy ion collisions and extracting the properties of the produced medium. On the experimental side, the cleanest environment to study the space-time evolution of hadronization is semi-inclusive Deeply Inelastic Scattering on nuclear targets. On the theoretical side, 2 frameworks are presently competing to explain the observed attenuation of hadron production: quark energy loss (with hadron formation outside the nucleus) and nuclear absorption (with hadronization starting inside the nucleus). I discuss recent observables and ideas which will help to distinguish these 2 mechanisms and to measure the time scales of the hadronization process.
description: 6 pages, 4 figures. Based on talks given at "Hot Quarks 2006", Villasimius, Italy, May 15-20, 2006, and at the "XLIV internataional winter meeting on nuclear physics", Bormio, Italy, Jan 29 - Feb 5, 2006. To appear in Eur.Phys.J.C
Efficiency of non-thermal desorptions in cold-core conditions. Testing the sputtering of grain mantles induced by cosmic rays
Creators: name: Wakelam, V.
name: Dartois, E.
name: Chabot, M.
name: Spezzano, S.
name: Navarro-Almaida, D.
name: Loison, J. -C.
name: Fuente, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Under cold conditions in dense cores, gas-phase molecules and atoms are depleted from the gas-phase to the surface of interstellar grains. Considering the time scales and physical conditions within these cores, a portion of these molecules has to be brought back into the gas-phase to explain their observation by milimeter telescopes. We tested the respective efficiencies of the different mechanisms commonly included in the models. We also tested the addition of sputtering of ice grain mantles via a collision with cosmic rays in the electronic stopping power regime. The ice sputtering induced by cosmic rays has been added to the Nautilus gas-grain model while the other processes were already present. Each of these processes were tested on a 1D physical structure determined by observations in TMC1 cold cores. The resulting 1D chemical structure was also compared to methanol gas-phase abundances observed in these cores. We found that all species are not sensitive in the same way to the non-thermal desorption mechanisms, and the sensitivity also depends on the physical conditions. Thus, it is mandatory to include all of them. Chemical desorption seems to be essential in reproducing the observations for H densities smaller than $4\times 10^4$~cm$^{-3}$, whereas sputtering is essential above this density. The models are, however, systematically below the observed methanol abundances. A more efficient chemical desorption and a more efficient sputtering could better reproduce the observations. In conclusion, the sputtering of ices by cosmic-rays collisions may be the most efficient desorption mechanism at high density (a few $10^4$~cm$^{-3}$ under the conditions studied here) in cold cores, whereas chemical desorption is still required at smaller densities. Additional works are needed on both mechanisms to assess their efficiency with respect to the main ice composition.
description: Accepted for publication in A&A
A Search for Host Galaxies of 24 Gamma-Ray Bursts
Creators: name: Ovaldsen, J. -E.
name: Jaunsen, A. O.
name: Fynbo, J. P. U.
name: Hjorth, J.
name: Thoene, C. C.
name: Feron, C.
name: Xu, D.
name: Selj, J. H.
name: Teuber, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results from observations of 24 gamma ray burst (GRB) fields from 2005 and 2006 undertaken at the Danish 1.54m telescope at ESO/La Silla. Photometry and positions for two previously unpublished host galaxy candidates (GRBs 050915 and 051021) are presented, as well as for eight other detected objects which are either known GRB hosts or candidate hosts. The candidates are suitable for spectroscopic follow-up in order to have their redshifts and other physical characteristics determined. In the cases where no likely host candidate is detected inside the refined Swift XRT error circle we are still able to put interesting and rather deep limits on the host magnitude. Based on our detections and upper limits we have performed simulations which suggest that the host galaxies are drawn from a fainter sample than previous (i.e. pre-Swift) studies.
description: Accepted for publication in The Astrophysical Journal. NB: High-resolution version of FIGURE 1 (mosaic) available at http://folk.uio.no/jeovalds/DK15/ApJ/
Post-war urban projects in Syria, a toponymic insight
Creators: name: Keilo, Jack
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Come sarà la toponomastica siriana postbellica? Dalla guerra civile (2011-), la riconfigurazione toponomastica è stata utilizzata per consolidare il controllo dello Stato e mostrare la continuità dell'ideologia baathista (1963-), ma anche per segnare i suoi cambiamenti qualitativi. Durante la guerra, sono stati aggiunti alla mappa nomi di "eroi" e "amici del popolo siriano". Due nuovi nomi di progetti urbani, Marota e Basilia Cities, rivelano nuove tendenze non in linea con il passato toponomastico ufficiale panarabo e "socialista", ma un'aspirazione a integrare l'economia globale, a "essere come Dubai", ad apparire come "protettore delle minoranze" o a sfumare le narrazioni ufficiali della storia del Paese. L'inventario dei nuovi toponimi siriani dal 2011 ci informerà sui nuovi allineamenti politici dello Stato siriano.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
Πολιτική ενημέρωση και τηλεοπτικό κοινό: η περίπτωση της Θεσσαλονίκης
Creators: name: Μάνιου, Θεοδώρα Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Πολιτική ενημέρωση
Δημοσιογραφία
Ελληνική τηλεόραση
Political information
Journalism
Greek television

description: Σκοπός της διατριβής ήταν να καταγράψει τις απόψεις του τηλεοπτικού κοινού σχετικά με την αξιοπιστία των πολιτικών ειδήσεων της τηλεόρασης, να εξετάσει το βαθμό ενδιαφέροντος του κοινού για τις πολιτικές ειδήσεις της τηλεόρασης αλλά και να διερευνήσει τυχόν διαφορές στις αποφάσεις του κοινού για όλα τα παραπάνω σε σχέση με τα ιδιαίτερα χαρακτηριστικά του. Στο πλαίσιο αυτό, αναλύοντας θεωρίες επικοινωνίας που εξηγούν τη "συμπεριφορά" του τηλεοπτικού κοινού και θεωρίες που περιγράφουν τον τρόπο με τον οποίο οργανώνονται τα δελτία ειδήσεων και οι πολιτικές εκπομπές στην ελληνική τηλεόραση. Σε ότι αφορά την έρευνα, που βασίζεται στην ποσοτική ανάλυση με βάση ερωτηματολόγιο, εξετάζει, μεταξύ άλλων, το βαθμό αξιοπιστία της πολιτικής ενημέρωσης από την τηλεόραση, τον βαθμό στον οποίο επηρεάζεται το τηλεοπτικό κοινό αλλά και τις απόψεις που αυτί έχει διαμορφώσει για την ποιότητα της πολιτικής ενημέρωσης που προσφέρει η ελληνική τηλεόραση
description: The target of this dissertation was to describe the opinion of television viewers concerning the reliability of political news, the extend to which the public is interested in "televised politics" and the differences within public opinion concerning all the above. In this perspective, the dissertain analyses certain theories of communication, which interprete the public's behavior and theories that describe the way News and Talk Show are organised in the Greek Television. The dissertation research is based on quantitative analysis, via personal questionnaire, conducted in the city of Thessaloniki
Emergence of Complex Spatio-Temporal Behavior in Nonlinear Field Theories
Creators: name: Gleiser, Marcelo
name: Howell, Rafael C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the emergence of time-dependent nonperturbative configurations during the evolution of nonlinear scalar field models with symmetric and asymmetric double-well potentials. Complex spatio-temporal behavior emerges as the system seeks to establish equipartition after a fast quench. We show that fast quenches may dramatically modify the decay rate of metastable states in first order phase transitions. We briefly suggest possible applications incondensed matter systems and early universe cosmology.
description: 6 pages, 8 figures
Σχέσεις φθορομετρικής δυναμικής και υδατικού ισοζυγίου σε είδη δρυός κάτω από υδατικό stress
Creators: name: Siam, Abubakr
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Υδατική καταπόνηση
Φωτοχημική αποτελεσματικότητα
Quercus frainetto
Water stress
Photochemical efficiency

description: Τρία είδη δρυός (γένος Quercus) αναπτύχθηκαν υπό φυσικές συνθήκες στο Ινστιτούτο Δασικών Ερευνών, στα Βασιλικά Θεσσαλονίκης, με σκοπό τη μελέτη επίδρασης της ξηρασίας στο υδατικό ισοζυγίο, στη φθορομετρική δυναμική και τη φωτοσυνθετική αποτελεσματικότητα του φωτοσυστήματος ΙΙ. Τα αποτελέσματα εισηγούνται ότι το είδος Q. ithaburensis φαίνεται να πετυχαίνει ευνοϊκότερο υδατικό ισοζύγιο με επακόλουθο την αποτελεσματικότερη χρήση του νερού (WUEintrinsic) και τις υψηλότερες τιμές φωτοχημικής αποτελεσματικότητας του φωτοσυστήματος ΙΙ. Παραμένει προς έρευνα κατά πόσο στις δρύες ισχύει η ισο-ανισοϋδρική θεωρία
description: The effects of drought on water balance and photosynthetic and photochemical efficiency of photosystem II were studied on seedlings of three Quercus species, grown under natural conditions at the Forest Research Institute in Vasilika, Thessaloniki. The results suggest that Q. ithaburensis seems to have a more favorable water balance and consequently more efficient water use (WUEintrinsic), as well as higher values of photosystem’s II photochemical efficiency. The isoanisohydric theory for Quercus species remains for further investigation.
Ferroelectric and dielectric properties of Hf0.5Zr0.5O2 thin film near morphotropic phase boundary
Creators: name: Kashir, Alireza
name: Hwang, Hyunsang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recently, based on the phase-field modeling, it was predicted that Hf1-xZrxO2 (HZO) exhibits the morphotropic phase boundary (MPB) in its compositional phase diagram. Here, we investigate the effect of structural changes between tetragonal (t) and orthorhombic (o) phases on the ferroelectric and dielectric properties of HZO films to probe the existence of MPB region. The structural analysis show that by adjusting the ozone dosage during the atomic layer deposition process and annealing conditions, different ratios of t- to o-phases (f_(t/o) ) were achieved which consequently affect the ferroelectric and dielectric properties of the samples. Polarization versus electric field measurements show a remarkable increase in ferroelectric characteristics (Pr and Ec) of the sample that contains the minimum t-phase fraction (f_(t/o)~ 0.04). This sample shows the lowest dielectric constant compared to the other samples which is due to the formation of ferroelectric o-phase. The sample that contains the maximum f_(t/o)~ 0.41 demonstrates the highest dielectric response. By adjusting the f_(t/o), a large dielectric constant of ~ 55 is achieved. Our study reveals a direct relation between f_(t/o) and dielectric constant of HZO thin films which can be understood by considering the density of MPB region.
The name of Favelas: Contradictions of the urban toponymy in Rio de Janeiro
Creators: name: Gonçalves De Lima, Ivaldo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Attualmente, a Rio de Janeiro, ci sono più di 760 baraccopoli. In questo lavoro, come questione centrale, vengono affrontate le contraddizioni insite nella denominazione delle favelas di Rio de Janeiro, dalle formazioni pionieristiche ai giorni nostri. Il nostro obiettivo generale è spiegare tali contraddizioni e gli obiettivi specifici sono: svelare i giudizi di valore che deprezzano le favelas attraverso i loro stessi nomi e analizzare lo svuotamento del significato dei nomi di alcune favelas come risultato delle dinamiche di violenza strutturale vissuto nella metropoli carioca.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
Topological-chiral magnetic interactions in ultrathin films at surfaces
Creators: name: Haldar, Soumyajyoti
name: Meyer, Sebastian
name: Kubetzka, André
name: Heinze, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that topological-chiral magnetic interactions can play a key role for magnetic ground states in ultrathin films at surfaces. Based on density functional theory we show that significant chiral-chiral interactions occur in hexagonal Mn monolayers due to large topological orbital moments which interact with the emergent magnetic field. Due to the competition with higher-order exchange interactions superposition states of spin spirals such as the 2Q state or a distorted 3Q state arise. Simulations of spin-polarized scanning tunneling microscopy images suggest that the distorted 3Q state could be the magnetic ground state of a Mn monolayer on Re(0001).
Observational Effects of Strong Gravity in Vicinity of Supermassive Black Holes
Creators: name: Jovanović, P.
name: Popović, L. Č.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Here we discuss the effects of strong gravity that can be observed in electromagnetic spectra of active galactic nuclei (AGN). According to the unification model of an AGN, there is a supermassive black hole ($10^7 - 10^9 M_\odot$) in its center, surrounded by an accretion disk that radiates in the X-ray band. Accretion disks could have different forms, dimensions, and emission, depending on the type of central black hole (BH), whether it is rotating (Kerr metric) or nonrotating (Schwarzschild metric). We modeled the emission of an accretion disk around supermassive BH using numerical simulations based on a ray-tracing method in the Kerr metric. A broad emission line Fe K$α$ at 6.4 keV with asymmetric profile (narrow bright blue peak and a wide faint red wing) has been observed in a number of type 1 AGN. The effects of strong gravitational field are investigated by comparison between the modeled and observed iron K$α$ line profiles. The results of our modeling show that the parameters of the Fe K$α$ line emitting region have significant influence on the line profile and thus, allow us to determine the space-time geometry (metric) in vicinity of the central BH of AGN, and also can give us information about the plasma conditions in these regions.
description: 5 pages, 3 figures. Accepted for publication in Fortschr. Phys. (proceedings of the BW2007 WORKSHOP "III Southeastern European Workshop Challenges Beyond the Standard Model")
Η τοπική κεραμική στη Χαλκιδική και στο μυχό του Θερμαϊκού κόλπου κατά τους αρχαϊκούς και κλασικούς χρόνους(Ακανθος-Καραμπουρνάκι-Σίνδος)
Creators: name: Παντή, Αννα Χρ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Μυχός Θερμαϊκού κόλπου
"Ωοκέλυφη" κεραμική
The inmost part of the Thermaic Gulf
"Egg-shelled" pottery

description: Αρχικά δίνεται το ιστορικό πλαίσιο της περιοχής που εξετάζεται. Η διαφορετική καταγωγή των κατοίκων και οι επιδράσεις που δέχονται από άλλα κέντρα ανάλογα με τις πολιτισμικές και εμπορικές τους σχέσεις αντανακλώνται στην κεραμική. Στα τρία πρώτα κεφάλαια εξετάζεται η κεραμική από την Ακανθο, το Καραμπουρνάκι και τη Σίνδο. Το υλικό διακρίνεται σε επιμέρους κατηγορίες με βάση τη διακόσμηση α)κεραμική με επιδράσεις από την Αν. Ελλάδα β)μονόχρωμη 1)με χονδρά τοιχώματα 2)ωοκέλυφη, γ. "ασημίζουσα", δ)τεφρόχρωμη ε)άβαφη κεραμική, σε μιμήσεις μελανόμορφων αγγείων ζ)μιμήσεις κορινθιακών. Στο τέταρτο κεφάλαιο εξετάζεται η χρονική διάρκεια παραγωγής της κάθε κεραμικής και η εξάπλωσή της στο χώρο της Χαλκιδικής και του Θερμαϊκού κόλπου. Αν και στους πρώϊμους χρόνους η κεραμική της Χαλκιδικής παρουσιάζει πολλές ομοιότητες με την αντίστοιχη των οικισμών του Θερμαϊκού, στους αρχαϊκούς χρόνους ότι νεοφερμένοι άποικοι εμμένουν τόσο στην αντιγραφή τόσο και των σχημάτων, όσο και της διακόσμησης των μεγάλων κέντρων των ανατολικοϊωνικού χώρου. Οι κάτοικοι των οικισμών του Θερμαϊκού κόλπου, αν και δέχονται τις ίδιες επιρροές, είναι πιο αυτόνομοι και καταφέρνουν να δημιουργήσουν μια κεραμική με ταινιωτή διακόσμηση και τη φωνόχρωμη κεραμική, που αν και αρχικά φαίνονται "πρωτότυπες", είναι εμφανές οι επιδράσεις μεγάλων κέντρων της ΥΓ και αρχαϊκών περιόδων. Ο συνδυασμός τους με στοιχεία της παλαιότερης παράδοσης τους προσφέρει μια νέα δυναμική. Στους κλασικούς χρόνους η επίδραση της αττικής κεραμικής είναι καθολική
description: At first it is given the historical background of the region. The different origin and the influences from various centers depending on their social and commercial relations are reflected on the pottery. On the first three chapters it is examined the pottery from Acanthus, Karambournaki and Sindos. The material is arranged on various classes depending on the decoration : a pottery influenced by East Greece, b. unicolored : b1, thick-walled b2 egg-shelled, c "silver" pottery, d. grey-ware, e. plain f. imitations of blackfigured and g imitations of corinthiak pottery. On the fourth chapter it is examined each category's length of production and its expansion at Chalkidice and the Thermaic Gulf. During the Archaic Period the cobrists of Chalkidice are restricted in copying the shapes and decoration of East Greek pottery. The residents of the settlements in the inmost-part of the Thermaic gulf manage to create a unicolored pottery and one with linear decoration, which though at first sight seem to be unique, it is obvious that they are influenced by the big workshops of aG and Archaic period. During the classical period attic pottery influences both the potters of Chalkidice and the Thermaic gulf
Examining the Identity of Yukawa with Gauge Couplings in Supersymmetric QCD at LHC
Creators: name: Freitas, A.
name: Skands, P.
name: Spira, M.
name: Zerwas, P. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The identity of the quark-squark-gluino Yukawa coupling with the corresponding quark-quark-gluon QCD coupling in supersymmetric theories can be examined experimentally at the Large Hadron Collider (LHC). Extending earlier investigations of like-sign di-lepton final states, we include jets in the analysis of the minimal supersymmetric standard model, adding squark-gluino and gluino-pair production to squark-pair production. Moreover we expand the method towards model-independent analyses which cover more general scenarios. In all cases, squark decays to light charginos and neutralinos persist to play a dominant role.
description: 16 pp; v2: branching ratios and event rates adjusted, due to an error in the implementation of the SUSY Les Houches Accord in Pythia (corrected meanwhile), conclusions unchanged
Nesonyms and power in historical cartography. The denomination of islands as an act of domination
Creators: name: Gallia, Arturo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: L’atto di denominare coincide con il controllo simbolico di un territorio. Quando questo processo avviene dall’esterno e riguarda contesti insulari, spesso coincide con una forma di dominazione. La cartografia storica cristallizza questo fenomeno e ci permette oggi di andare a comprendere le dinamiche di denominazione e dominazione dei contesti insulari di nuova scoperta ed esplorazione nel passato. L’intervento si propone di soffermarsi sulla questione con alcune riflessioni.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
Damping estimates for oscillatory integral operators with finite type singularities
Creators: name: Comech, Andrew
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35S30; 47G30; 58J40

description: We derive damping estimates and asymptotics of $L^p$ operator norms for oscillatory integral operators with finite type singularities. The methods are based on incorporating finite type conditions into $L^2$ almost orthogonality technique of Cotlar-Stein.
description: 17 pages
Italian Street Naming Practices and Anti-Mafia Memory Policies
Creators: name: Muti, Giuseppe
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Il contributo illustra la diffusione dell’odonomastica antimafia in Italia e ne studia il significato nel quadro storico delle politiche di denominazione delle strade in Italia, mettendo in luce le difficoltà del processo e il ruolo fondamentale dell’associazionismo civico. L’odonomastica antimafia in Italia si propone come la memoria civica fondamentale della cosiddetta seconda Repubblica, nata dopo i grandi processi antimafia e anticorruzione degli anni Novanta, ma proprio le contestate pratiche di denominazione e l’aspro dibattito pubblico mettono in luce come l’“antimafia” sia ancora un’idea divisiva.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
Προσκόλληση εφήβων και νεαρών ενηλίκων: επιπτώσεις στην αυτο-αντίληψη και στις στενές διαπροσωπικές σχέσεις
Creators: name: Δασκάλου, Βασιλική
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Στρατηγικές διαχείρισης αγχόγονων καταστάσεων
Ενδοπροσωπική διαφοροποίηση της προσκόλλησης
Coping
Differentiation of working models of attachment

description: Βασικός στόχος της παρούσας διατριβής ήταν η διερεύνηση της ενδοπροσωπικής διαφοροποίησης της προσκόλλησης προς τους γονείς, τους στενούς φίλους, τους ερωτικούς συντρόφους και γενικά προς τους άλλους, κατά τα χρόνια της ύστερης εφηβικής ηλικίας και της πρώτης ενήλικης ζωής ένας δεύτερος στόχος που τέθηκε αφορούσε τη σχέση των ενεργών μοντέλων προσκόλλησις με την αυτοαντίληψη, το συναίσθημα προς τον ευατό του και τις στρατηγικές αντιμετώπισης προβλημάτων στις στενές διαπροσωπικές σχέσεις. Στην έρευνα συμμετέχουν 460 άτομα, 18-25 χρόνων, τα οποία συμπληρώσαν ερωτηματολόγια αυτοαναφοράς. Τα αποτελέσματα των στατιστικών αναλύσεων έδειξαν πως τα άτομα με θετικό μοντέλο του ευατού παρουσιάζουν σταθερότητα στις σχέσεις προσκόλλησης προς τους γονείς, τους φίλους, τους ερωτικούς συντρόφους και γενικά προς τους άλλους. Από την άλλη πλευρά διαφάνηκε ότι τα άτομα με αρνητικό μοντέλο του εαυτού διαφοροποιούνται ως προς τις σχέσεις προσκόλλησης. Τα αποτελέσματα επίσης έδειξαν πως τα άτομα με ασφαλείς σχέσεις προσκόλλησης έχουν θετικές αυτοαντιλήψεις, υψηλό θετικό συναίσθημα προς τον ευατό, χαμηλό αρνητικό συναίσθημα προς τον εαυτό και δεν αποφεύγουν την αντιμετώπιση αγχογόνων καταστάσεων. Τέλος, διαφάνηκε ο μεσολαβητικός ρόλος του συναισθήματος στη σχέση της προσκόλλησης με τις αυτοαντιλήψεις, καθώς και ο σημαντικός μεσολαβητικός ρόλος του θετικού συναισθήματος και της ακαδημαϊκής/εργασιακής αυτοαντίληψης στη σχέση της προσκόλλησης με την αποφυγή προβλημάτων των στενών διαπροσωπικών σχέσεων
description: The main goal of this study was to find out the differentiation of the working model of attachment among different relationships to parents, close friends, partners and generally to others, as well as their relationship to self-concept, positive and negative affect and coping strategies. A second goal was to find out the mediating models and self concept, as well as the mediating role of affect and self-concept between the relation of attachment and coping strategies. 460 young people, 18-25 years old, completed self-report questionnaires. The findings support the differentiation, of working models of attachment among different relationships for young people with negative model of self. Young people with secure attachment models have positive self concepts of domains, high level of positive affect, low level of negative affect and do not avoid to cope difficult situations of interpersonal relationships. Finally, the findings support the important medicing role of affect and self concept between the relationship between attachment and coping
Are short gamma-ray bursts collimated? GRB050709, a flare but no break
Creators: name: Watson, D.
name: Hjorth, J.
name: Jakobsson, P.
name: Xu, D.
name: Fynbo, J. P. U.
name: Sollerman, J.
name: Thöne, C. C.
name: Pedersen, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: From the small sample of afterglow lightcurves of short duration gamma-ray bursts (GRBs), the decays are rapid, roughly following a power-law in time. It has been assumed that the afterglow emission in short GRBs is collimated in jets in the same way as in long GRBs. An achromatic break in a short GRB afterglow lightcurve would therefore be strong evidence in favour of collimation in short GRBs. We examine the optical lightcurve of the afterglow of the short GRB 050709, the only short GRB where a jet break has been claimed from optical data. We show that (1) the decay follows a single power-law from 1.4 to 19 days after the burst and has a decay index alpha = 1.73_{-0.04}^{+0.11}, (2) that an optical flare at ~10 days is required by the data, roughly contemporaneous with a flare in the X-ray data, and (3) that there is no evidence for a break in the lightcurve. This means that so far there is no direct evidence for collimation in the outflows of short GRBs. The available limits on the collimation angles in short GRBs now strongly suggest much wider opening angles than found in long GRBs.
description: 5 pages, 2 figures, accepted for publication in A&A Letters with minor corrections
Η εικόνα του άνδρα πολιτικού στον ελληνικό τύπο κατά την χρονική περίοδο 1989-2000
Creators: name: Κοτζαϊβάζογλου, Ιορδάνης
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Πολιτική διαφήμιση
Πολιτική Μάρκετινγκ
Political advertising
Political marketing

description: Η διατριβή αναφέρεται στην εικόνα των υποψήφιων βουλευτών της Α' εκλογικής περιφέρειας Θεσσαλονίκης στον τοπικό και αθηναϊκό τύπο κατά τη χρονική περίοδο 1989-2000. Μελετώνται η συχνότητα και ο τρόπος προβολής των υποψηφίων και γίνεται σύγκριση μεταξύ των εκλεγμένων υποψηφίων. Διαπιστώνονται σημαντικές αλλαγές στην εξεταζόμενη περίοδο, διαφορές στη συχνότητα και στον τρόπο προβολής υπέρ τοπικών και αθηναϊκών εφημερίδων. Επίσης εξετάζονται η διαχρονική εξέλιξη των διαφημιστικών καταχωρήσεων των υποψηφίων στις εφημερίδες, καθώς και οι αξίες και τα πρότυπα που κυριάρχησαν στις καταχωρήσεις αυτές. Ως μεθοδολογία και η σημειολογική ανάλυση
description: The dissertation treats of the image of male parliamentary canditates for the Thessaloniki 'A' electoral district in the local and Athens press in the period 1989-2000. It examines the frequency and manner of their projection and draws comparisons between elected and non-elected candidates. Significant changes are found to have occured over the period in question, differences in frequency and manner of projection in favour of the sitting candidates and differences as between local and Athenian newspapers. It also examines the evolution of the canditates' newspaper advertising material over this period and the values and models that predominated in this material. The methodology used was that of content analysis and semiology
Dynamical and thermal properties of the parsec-scale gases spherically accreted onto low luminous active galactic nuclei
Creators: name: Sun, Han-Wen
name: Yang, Xiao-Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analytically study the dynamical and thermal properties of the optically-thin gases at the parsec-scale when they are spherically accreted onto low luminous active galactic nuclei (LLAGNs). The falling gases are irradiated by the central X-ray radiation with the Compton temperature of 5--15$\times10^7$ K. The radiative heating/cooling and the bulge stellar potential in galaxies are taken into account. We analyze the effect of accretion rate, luminosity, gas temperature, and Compton temperature on steady solutions of dynamical and thermal properties. The steady solutions are obviously different from Bondi solution. Compared to our models, the Bondi model underestimates the accretion rate. We give the boundary between thermal stability and instability. The boundary is significantly affected by Compton temperature. When Compton temperature is higher, the falling gases tend to become thermally unstable. When thermal instability takes place in the irradiated gases, the gases become two phases (i.e. hot gases and cool gases) and the hot gases may become outflows. This effect may reduce the accretion rates.
description: 13 pages, 13 figures, accepted for publication in MNRAS
Δείκτες περιβαλλοντικής πίεσης από την οδική κυκλοφορία σε συνυπολογισμό της παραγωγής απορριμάτων
Creators: name: Γιαννούλη, Μυρσίνη Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Δείκτες περιβαλλοντικής πίεσης
Αέριοι ρύποι
Απορρίμματα οχημάτων
Μοντέλα υπολογισμού εκπομπών
Environmental pressure indicators
Air emissions
Waste from vehicles
Emission calculation models

description: Κύριος στόχος της διατριβής είναι η εκτίμηση δεικτών περιβαλλοντικής πίεσης από την οδική κυκλοφορία, με συνυπολογισμό των απορριμμάτων που παράγονται από τα οδικά οχήματα. Για την επίτευξη του στόχου της εργασίας, αναπτύχθηκε σύστημα υπολογισμού της σύστασης στόλου και των επιπέδων δραστηριότητας οχημάτων στην Ευρωπαϊκή Ένωση (TRENDS), το οποίο χρησιμοποιείται σε συνδυασμό με υπάρχον μοντέλο υπολογισμού εκπομπών από την οδική κυκλοφορία (COPERT). Στην εργασία παρουσιάζονται τιμές δεικτών περιβαλλοντικής πίεσης για κάθε χώρα-μέλος της Ευρωπαϊκής Ένωσης (ΕΕ15) για το χρονικό διάστημα 1990-2020, ενώ εξετάζονται 113 κατηγορίες οδικών οχημάτων. Σημαντικό επίσης τμήμα της διατριβής αποτελεί η δημιουργία σεναρίων πρόβλεψης μελλοντικών περιβαλλοντικών συνθηκών, η οποία βασίζεται στη διερεύνηση των επιπτώσεων που αναμένεται να επιφέρει στο περιβάλλον η εφαρμογή διαφόρων νομοθετικών μέτρων, με στόχο την εκτίμηση της αποτελεσματικότητας των νομοθετικών μέτρων. Το υπολογιστικό σύστημα που αναπτύχθηκε στα πλαίσια της διατριβής περιλαμβάνει ένα επιπρόσθετο εργαλείο (TRENDS/Waste) για την εκτίμηση των απορριμμάτων που προκύπτουν από την οδική κυκλοφορία, τόσο κατά τη διάρκεια ζωής, όσο και από την απόσυρση των οχημάτων από την κυκλοφορία
description: The main aim of the thesis is the estimation of indicators of environmental pressure due to road transport, including the calculation of the amount of waste produced by road transport. In order to achieve this goal, a computer tool (TRENDS) was developed, for calculating vehicle fleet and activity data in the European Community, which can be used together with an existing tool (COPERT) for estimating air pollutant emissions from road transport. Environmental pressure indicators presented in the thesis cover the entire European Community (EE15) for the time period 1990- 2020, as well as 113 different vehicle categories. Also, an important part of the thesis concerns the development of scenarios of future environmental conditions, based on the possible environmental consequences of future legislative measures, which enables the assessment of future legislative measures. Moreover, the calculating system developed (TRENDS), includes an additional tool (TRENDS/Waste) for estimating the amount of waste produced from road transport, both during the lifetime of the vehicles, and when the vehicles are scrapped
Hadronization revisited: the dynamics behind hadro-chemical equilibrium
Creators: name: Stock, Reinhard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The multiplicity of hadronic species created in elementary, and in nucleus-nucleus collisions, are known to be well reproduced by the statistical hadronization model, in its canonical and grand-canonical versions.To understand the origin of the implied equilibrium we revisit the hadronization models developed for e+e- annihilation to hadrons which imply spatial color pre-confinement clusters forming at the end of the pQCD evolution, which decays into on-shell hadrons/resonances. The classical ensemble description arises as a consequence of decoherence and phase space dominance during cluster formation, and decay.For A+A collisions we assume that hadronization occurs from similar singlet clusters which will overlap spatially owing to the extreme density. This is imaged in the transition to the grand-canonical ensemble.This transition sets in with increasing A and collision centrality. It can be described by a percolation model.
description: Presented at Critical Point and Onset of Deconfinement, July 3-6 2006, Florence, Italy
Ποιοτική και ποσοτική σύνθεση της βενθικής μακροπανίδας και μειοπανίδας σε λιμνοθαλάσσια οικοσυστήματα της Βόρειας Ελλάδας με διαφορετικό βαθμό απομόνωσης
Creators: name: Δουλγεράκη, Στεφανία Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Μειοπανίδα
Επιπανίδα
Epifauna
Meiofauna

description: Ο στόχος της διατριβής ήταν η περιγραφή της σύνθεσης των μακροπανιδικών(βενθική μακροπανίδα και επιπανίδα) και μειοβενθικών συνευρεύσεων σε λιμνοθαλάσσια οικοσυστήματα με διαφορετικό βαθμό απομόνωσης, για να διερευνηθεί εάν οι συνευρεύσεις αυτές διαφοροποιούνται χωρικά και να εντοπιστούν ποιοί παράγοντες επηρεάζουν αυτή τη διαφοροποίηση. Για το σκοπό αυτό, συγκροτήθηκε ένα πλέγμα 22 σταθμών στο ανοιχτό οικοσύστημα της Βάσσοβας(Καβάλα), στο ημίκλειστο των Πηγών(Καβάλα) και στο κλειστό οικοσύστημα των Αλυκών Κίτρους(Πιερία). Σε κάθε σταθμό, συλλέχθηκαν ποσοτικά πανιδικά δείγματα και μετρήθηκαν 17 φυσικομικές παράμετροι. Επιπλέον, συλλέχθηκαν ποιοτικά δείγματα φυτο,ζωοπλαγκτού και υδρόβιων φυτών(Οκτώβριος 1997). Συλλέχθηκαν επίσης μακροβενθικά και μειοβενθικά δείγματα από έναν σταθμό αναφοράς των Πηγών(s19), το καλοκαίρι και το χειμώνα, στα οποία εκτιμήθηκε η αφθονία και η βιομάζα τους. Η επεξεργασία των δεδομένων έγινε με μονομεταβλητές και πολυμεταβλητές αναλύσεις. Οι τρείς πανιδικές συνευρεύσεις παρουσίασαν παρόμοια πρότυπα κατανομής και οργάνωσης. Η ποικιλότητα όλων των συνευρεύσεων ήταν μεγαλύτερη στο ανοικτό οικοσύστημα και μειώνονται βαθμιαία στο ημίκλειστο και στο κλειστό. Οι μειοπανιδικές συνευρεύσεις είχαν επίσης μεγαλύτερη εποχική σταθερότητα από τις μακροπανιδικές. Η κατανομή και των τριών βενθικών συνευρεύσεων επηρεάστηκε από το βαθμό απομόνωσης του κάθε οικοσυστήματος, αλλά και από τη φυσικοχημική κατάσταση του νερού, τα χαρακτηριστικά του ιζήματος και τον υδροδυναμισμό που φαίνεται να διαδράτισε σημαντικό ρόλο
description: The aim of this study was to describe the structure of macrofaunal(benthic and epibenthic) and meiobenthic assemblages, their spatial distribution and the environmental factors which affect their distribution in lagoons with different degree of isolation. A series of quantitative faunal samples were collected from 22 stations in the open lagoon of Vassova(Kavala), the semi-closed lagoon of Piges(Kavala) and the closed lagoon of Alykes Kitrous(Pieria) and also 17 physicochemical variables were measured. Qualitative samples of phyto-, zooplankton and aquatic plants were also collected. Faunal samples were also collected from the reference station 19 pf Piges, during summer and winter and their density and biomass were determined. Uni-and multivariate methods were used for the data analyses. The faunal assembages showed similar distributional patterns. The diversity of all assemblages was higher in the open lagoon and then in the semi-closed and the closed lagoons. Meiofaunal community showed higher seasonal stability comparing to macrofaunal community. Spatial variability was affected from the degree of isolation from the sea, but also freom the physicochemical mnature of the water, the sediment type and the hydrodynamism which seems to play a key role
Photoluminescence of ion-synthesized 9R-Si inclusions in SiO2/Si structure: effect of irradiation dose and oxide film thickness
Creators: name: Nikolskaya, Alena
name: Belov, Alexey
name: Mikhaylov, Alexey
name: Konakov, Anton
name: Tetelbaum, David
name: Korolev, Dmitry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The study of hexagonal silicon polytypes attracts special attention due to their unique physical properties compared to the traditional cubic phase of Si. Thus, for some hexagonal phases, a significant improvement in the emission properties has been demonstrated. In this work, the luminescent properties of SiO2/Si structures irradiated with Kr+ ions at different doses and annealed at 800 °C have been systematically investigated. For such structures, a photoluminescence line at ~ 1240 nm is observed and associated with the formation of hexagonal 9R-Si phase inclusions. It is found that the variation in the thickness of oxide film and the relative position of ion distribution profile and film / substrate interface leads to a regular change in the luminescence intensity. The nature of the observed dependencies is discussed as related to the interplay between the desirable 3C-Si -> 9R-Si structural transition and generation of nonradiative defects. The revealed regularities suggest optimal ion irradiation conditions for synthesis of optically active 9R-Si phase in diamond-like silicon.
Regendering urban space? Transfeminist streetscapes in Milan, Italy
Creators: name: Pecorelli, Valeria
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Questo studio adotta l'approccio teorico della critica femminista, soffermandosi sulle pratiche performative di ri-territorializzazione del tessuto urbano milanese in cui il diritto alla città viene richiamato e rivendicato nella dimensione di genere. L'obiettivo è anche quello di colmare una lacuna nella toponomastica critica, poiché finora è stato scritto molto poco sul genere e sui nomi delle strade. La guerriglia odonomastica, seppur recente, non trasforma esclusivamente il volto della città di Milano, ma, visti i progetti in corso in Italia e nelle città europee da parte di associazioni di donne e collettivi transfemministi, anima anche altri contesti attraverso contro-narrazioni che superano la dimensione binaria maschile/femminile per ripensare la storia e ripensare lo spazio delle nostre vite.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
A Binary Model for the UV-upturn of Elliptical Galaxies
Creators: name: Han, Z.
name: Podsiadlowski, Ph.
name: Lynas-Gray, A. E.
name: Schawinski, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The discovery of an excess of light in the far-ultraviolet (UV) in 1969 in elliptical galaxies was a major surprise. While it is now clear that this UV excess (UV-upturn) is probably caused by an old population of helium-burning stars. Han et al (2002, 2003) proposed a binary model for the formation of hot subdwarfs (helium burning stars) and the model can reproduce the observations in our Galaxy. By applying the binary model to the study of evolutionary population synthesis, we have obtained an {\it a priori} model for the UV-upturn of elliptical galaxies. The model shows that the UV-upturn is most likely resulted from binary interactions and it is universal (not very much metallicity-dependant) in ellipticals. This has major implications for understanding the evolution of the UV-upturn and elliptical galaxies in general; contrary to previous postulates, it implies that the UV-upturn is not a sign of age, but could be a potentially powerful indicator for a recent minor burst of star-forming activity.
description: 2 pages, 2 figures, proceedings of IAU Symp. 241, Stellar Populations as Building Blocks of Galaxies
La formazione manageriale in sanità. Nuovi strumenti e modelli tra governance e politiche
Creators: name: Rainero, Christian
name: Brescia, Valerio
name: Cataldo, Alessandro
Publisher: name: Economia Aziendale Online
Year: 2019

description: La necessità prodotta dall’aziendalizzazione degli enti pubblici ha portato anche le aziende sanitarie ad aver bisogno di rispondere al bisogno di accountability degli stakeholders. Il change management in sanità e il bisogno di rispondere alla necessità di accountability degli stakeholders porta le strutture sanitarie a individuare strumenti di accompagnamento, governo e esecuzione delle politiche intraprese dai ruoli manageriale ai diversi livelli. A queste esigenze cercano di rispondere i nuovi modelli di governance, e proprio della governance e della formazione della direzione delle aziende sanitarie locali e ospedaliere andremo a indagare per cercare di sviluppare un nuovo modello di pianificazione programmazione e controllo della formazione del top management nelle aziende sanitarie in Italia. Lo studio è stato condotto in tutte le Regioni d’Italia, all’indagine hanno risposto il 40% degli intervistati. Il campione analizza la formazione manageriale organizzata ed erogata da ciascuna regione negli ultimi 5 anni. Attraverso il case study è stato possibile analizzare l’andamento e le caratteristiche legate alla formazione manageriale in modo da proporre un nuovo modello integrato di amministrazione razionale considerando anche il modello di Kirkpatrick nelle fasi della valutazione della ricaduta sull’organizzazione.
description: Economia Aziendale Online, Vol 10, No 2 (2019): SPECIAL ISSUE - The multidimensional content of Economia Aziendale [2 of 3]
Réattribution toponymique dans le Sud-Caucase: les exemples de l’Abkhazie et de l’Ossétie du Sud
Creators: name: Bachelet, Ariane
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: A partire dai casi dell’Abkhazia e dell’Ossezia del Sud, questo articolo evidenzia due questioni centrali sulla toponomastica in un territorio a sovranità contesa. Da un lato, possono emergere cartografie concorrenti con un toponimo (ri)conosciuto usato dallo Stato de jure (qui la Georgia) e un toponimo usato dagli attori locali ma non riconosciuto, proposto dallo Stato de facto (qui Abkhazia e Ossezia del Sud). D’altra parte, è lo Stato riconosciuto a maggioranza (in questo caso la Georgia) che è in grado di imporre la propria versione della toponomastica a livello internazionale, e non lo Stato de facto che controlla il territorio nella pratica (in questo caso Abkhazia e Ossezia del Sud), anche se quest’ultimo è sostenuto da una potenza come la Russia. Il riconoscimento dello Stato è quindi fondamentale per la “sovranità cartografica”.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space
State of the art of IR disclosure in Europe. A research agenda
Creators: name: Beretta, Valentina
name: Demartini, Chiara
name: Trucco, Sara
Publisher: name: Economia Aziendale Online
Year: 2019

description: Even if the topic of the Integrated Reporting (IR) disclosure is widely discussed among scholars and practitioners, more research is needed in order to have a better understanding of the evolutionary path of the adoption of IR across Europe. Therefore, the paper aims to analyze the development paths of IR in Europe, considering the IR of listed firms published between 2011 and 2016, and available in the Integrated Reporting Emerging Practice (IIRC) Examples Database. Furthermore, this research aims to identify a set of issues for further research in the field of IR. Empirical results show the pace of diffusion of IR in Europe. In particular, results in the European setting highlight that the number of IR after the global financial crisis is similar for each year in the sample time period with the exception of the year 2012 in which there is a drastically decrease in the number of integrated reports. This paper also highlights which factors of the firms are relevant or not in adopting such a reporting framework. Practitioners can benefit from this study since they could be aware about the process of implementation of IR among firms belonging to different industries in Europe.
description: Economia Aziendale Online, Vol 10, No 2 (2019): SPECIAL ISSUE - The multidimensional content of Economia Aziendale [2 of 3]
On the absolutely continuous spectrum of generalized indefinite strings II
Creators: name: Eckhardt, Jonathan
name: Kostenko, Aleksey
name: Kukuljan, Teo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 34L05, 34B07 (Primary), 34L25, 37K15 (Secondary)

description: We continue to investigate absolutely continuous spectrum of generalized indefinite strings. By following an approach of Deift and Killip, we establish stability of the absolutely continuous spectra of two more model examples of generalized indefinite strings under rather wide perturbations. In particular, one of these results allows us to prove that the absolutely continuous spectrum of the isospectral problem associated with the two-component Camassa-Holm system in a certain dispersive regime is essentially supported on the set $(-\infty,-1/2]\cup [1/2,\infty)$.
description: 27 pages
Bühne
Creators: name: Rey, Anton
Publisher: name: Zenodo
Year: 2015
Subjects: Artistic Research
Theater
Künstlerische Forschung
Theaterzuschauer
Performing Arts

description: Eintrag zum Begriff "Bühne" im Handbuch Künstlerische Forschung
description: + ID: 577647 + PeerReviewed: Peer Reviewed
Raffestin aurait-il pu révolutionner la toponymie?
Creators: name: Ben Arrous, Michel
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2023

description: Quando Raffestin parlava di "totalitarismo dell'occhio" si riferiva alla propensione della geografia a concentrarsi sugli oggetti morfologici, i più visibili ed evidenti, piuttosto che sul rapporto delle società con i sistemi delle forme. Per analogia, la "dittatura del leggibile" riguarda la fascinazione della toponomastica critica per i nomi ufficiali - quelli che possono essere facilmente letti su mappe, piani urbanistici o cartelli stradali - a scapito dei toponimi informali, vernacolari o popolari. Prendere in considerazione questi toponimi significa mettere in discussione i presupposti di un campo di ricerca che sopravvaluta il potere della toponomastica ufficiale e la sua egemonia. Le relazioni di potere che si giocano nella tensione e nelle interazioni tra sistemi eterogenei possono essere rivelate solo studiando il rapporto che le società hanno con tutte le risorse toponomastiche a loro disposizione.
description: Semestrale di studi e ricerche di geografia, N. 1 (2023): Critical toponimy: practices of (re)naming and the power to trasnform time into space