cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Η εφαρμογή του μοντέλου “σχεδιασμός πολυεπίπεδων υπηρεσιών” στο Νυχτερινό Ημιμαραθώνιο Θεσσαλονίκης
Creators: name: Καλλιτσάρη, Ζαφειρούλα Μόσχου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Καταναλωτική εμπειρία
Αθλητικά γεγονότα
Αθλητικό μάρκετινγκ
Δρομικά αγωνίσματα
Σχεδιασμός υπηρεσιών
Μαραθώνιος
Customer experience
Sport events
Sport marketing
Running events
Marathon

description: Παρά το γεγονός ότι οι αθλητικές διοργανώσεις είναι βιωματικές, η έννοια της καταναλωτικής εμπειρίας έχει διερευνηθεί ελάχιστα σε μελέτες αθλητισμού και διοργάνωσης εκδηλώσεων (Funk, Lock, Karg & Pritchard, 2016). Η παρούσα μελέτη πραγματοποιήθηκε στον Διεθνή Νυχτερινό Ημιμαραθώνιο Θεσσαλονίκης 2017 και είχε σαν σκοπό, πρώτα να κατανοήσει τους βασικούς παράγοντες της εμπειρίας των συμμετεχόντων και έπειτα να επανασχεδιάσει την διοργάνωση με στόχο την βελτίωση της συνολικής τους εμπειρίας. Για την καλύτερη κατανόηση της εμπειρίας, πραγματοποιήθηκαν ημι-δομημένες συνεντεύξεις, 14 ατομικές από επτά (7) άνδρες κι επτά (7) γυναίκες καθώς και σε 5 (Ν=34) ομάδες εστίασης, είκοσι οκτώ (28) άνδρες και έξι (6) γυναίκες. Οι συνεντεύξεις αναλύθηκαν με την ποιοτική μέθοδο της θεματικής ανάλυσης. Επίσης, διενεργήθηκε επιτόπια συμμετοχική παρατήρηση. Στην έρευνα έγινε εφαρμογή του μοντέλου “σχεδιασμός πολυεπίπεδων υπηρεσιών” (Patricio, Fisk, Falcao e Cunha & Constantine, 2011). Συμπέρασμα της έρευνας ήταν αρχικά η δυνατότητα εφαρμογής του μοντέλου ΣΠΥ σε αθλητικές διοργανώσεις, ώστε να γίνει κατανοητή η εμπειρία των δρομέων. Σε δεύτερο επίπεδο πραγματοποιήθηκε α) ο επανασχεδιασμός των παρεχόμενων υπηρεσιών διοργάνωσης και η προσθήκη νέων υπηρεσιών καθώς και β) η αύξηση συνεργασιών με εξωτερικούς συνεργάτες
description: Despite the fact that sport services are highly experiential, the concept of customer experience received little attention from sport and event management researchers (Funk et al, 2016). The study was conducted at the International Thessaloniki Night Half Marathon 2017, on order to understand the key determinants of customer experience and to redesign the customer journey, in an effort to improve runners’ overall participation experience. To further understand participants’ experience, two qualitative methods were conducted: 14 semi-structured interviews from whom seven (7) were women and seven (7) were men and five (5) focus groups (N = 34) from whom six (6) were women and twenty eight (28) were men. Thematic analysis was the qualitative method that was used. An on-the-spot participatory observation was also performed. The Multilevel Service Design (MSD) method (Patricio et al, 2011) was applied in the sport event. The results of the study showed that, the application of the MSD method, assisted event’s organizers to fully understand participants’ customer journey. Eventually it was possible, a) to redesign existing and provide new service offerings, and (ii) to increase collaboration with external partners
Multiscale nonconvex relaxation and application to thin films
Creators: name: Babadjian, Jean-Francois
name: Baia, Margarida
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35E99; 35M10; 49J45; 74B20; 74G65; 74Q05,; 74K35

description: $Γ$-convergence techniques are used to give a characterization of the behavior of a family of heterogeneous multiple scale integral functionals. Periodicity, standard growth conditions and nonconvexity are assumed whereas a stronger uniform continuity with respect to the macroscopic variable, normally required in the existing literature, is avoided. An application to dimension reduction problems in reiterated homogenization of thin films is presented.
description: 40 pages, 5 figures
Kurznachrichten
Creators: name: IZGOnZeit, Redaktion
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2016

description: • Neuerrichtung des Interdisziplinären Zentrums für Geschlechterforschung (IZG) • Bielefelder Gleichstellungspreis 2015: Kategorie Genderforschung • WeilFrauenNaturwissenSchaffen 2016 • Projekt der Gleichstellungsbeauftragten „Gender 2020“
description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 5 (2016)
Impurity resonant state in d-wave superconductors: in favor of a Kondo-like response
Creators: name: Kircan, Marijana
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the impurity resonant state induced by non-magnetic impurities in d-wave cuprate superconductors in two different impurity models: (i) in a pure potential scattering model within the T-matrix approach and (ii) in a Bose-Fermi Kondo model within the large-N formalism. We modify the superconducting host to resemble the nanoscale electronic inhomogeneities seen in the scanning tunneling microscopy (STM) spectra (i.e., the small- and large-gap domains) and study how this influences the impurity resonance. In the pure potential scattering model the resonant state is found to be a rather robust feature appearing in all host domains. On the other hand, in the Kondo-like model the impurity resonance can appear in the small-gap regions of the host and be completely suppressed in the large-gap regions; this is in agreement with the STM experimental data for Zn-doped BSCCO. Our results imply that the Kondo spin dynamics of the impurity moment is the origin of the impurity resonant state in d-wave superconductors, rather than the pure potential scattering.
description: 11 pages, 7 figs
Higgsless Models: Lessons from Deconstruction
Creators: name: Simmons, E. H.
name: Chivukula, R. S.
name: He, H. -J.
name: Kurachi, M.
name: Tanabashi, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This talk reviews recent progress in Higgsless models of electroweak symmetry breaking, and summarizes relevant points of model-building and phenomenology.
description: 12 pages, 2 figures, Presented at the X Mexican Workshop on Particles and Fields
Hyperfine Mixing and the Semileptonic Decays of Double-Heavy Baryons in a Quark Model
Creators: name: Roberts, W.
name: Pervin, Muslema
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The semileptonic decays of the lowest-lying double-heavy baryons is treated in a quark model. For the $Ξ_{bb}$, hyperfine mixing in the spin wave function leaves the total rate for decay into the lowest lying daughter baryons essentially unchanged, but changes the relative rates into the $Ξ_{bc}$ and $Ξ_{bc}^\prime$. The same pattern is obtained in the decays of the $Ω_{bb}$. For the $Ξ_{bc}$, this mixing leads to factor of about 17 suppression in the decay rate to the $Ξ_{cc}^*$, and a factor of two suppression in the total decay rate. For the $Ω_{bc}$, the decay to the $Ω_{cc}^*$ is suppressed by a factor of more than 30 from the unmixed case, and the total decay rate is decreased to about 40% of the decay rate obtained when mixing is ignored.
description: 7 pages
Exploration of the Hg-based cuprate superconductors by Raman spectroscopy under hydrostatic pressure
Creators: name: Auvray, N.
name: Loret, B.
name: Chibani, S.
name: Grasset, R.
name: Guarnelli, Y.
name: Parisiades, P.
name: Forget, A.
name: Colson, D.
name: Cazayous, M.
name: Gallais, Y.
name: Sacuto, Alain
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The superconducting phase of the $\mathrm{HgBa}_2\mathrm{CuO}_{4+δ}$ (Hg-1201) and $\mathrm{HgBa}_2\mathrm{Ca}_2\mathrm{Cu}_3\mathrm{O}_{8+δ}$ (Hg-1223) cuprates has been investigated by Raman spectroscopy under hydrostatic pressure. Our analysis reveals that the increase of $T_c$ with pressure is slower in Hg-1223 cuprate compared to the Hg-1201 due to a charge carrier concentration imbalance (accentuated by pressure) between the $\mathrm{CuO}_2$ layers of Hg-1223. We find that the energy variation under pressure of the apical oxygen mode from which the charge carriers are transferred to the $\mathrm{CuO}_2$ layers, is the same for both the Hg-1223 and Hg-1223 cuprates and it is controlled by the inter-layer compressibility. At last, we show that the binding energy of the Cooper pairs related to the maximum amplitude of the $d-$ wave superconducting gap at the anti-nodes, does not follow $T_c$ with pressure. It decreases while $T_c$ increases. In the particular case of Hg-1201, the binding energy collapses from 10 to 2 $K_B T_c$ as the pressure increases up to 10 GPa. These direct spectroscopic observations joined to the fact that the binding energy of the Cooper pairs at the anti-nodes does not follow $T_c$ either with doping, raises the question of its link with the pseudogap energy scale which follows the same trend with doping.
description: 15 pages, 18 figures
Semiclassical quantization of the Bogoliubov spectrum
Creators: name: Kolovsky, Andrey R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze the Bogoliubov spectrum of the 3-sites Bose-Hubbard model with finite number of Bose particles by using a semiclassical approach. The Bogoliubov spectrum is shown to be associated with the low-energy regular component of the classical Hubbard model. We identify the full set of the integrals of motions of this regular component and, quantizing them, obtain the energy levels of the quantum system. The critical values of the energy, above which the regular Bogoliubov spectrum evolves into a chaotic spectrum, is indicated as well.
description: 4.1 pages, 3 figures
Impact of hypernova νp-process nucleosynthesis on the galactic chemical evolution of Mo and Ru
Creators: name: Sasaki, Hirokazu
name: Yamazaki, Yuta
name: Kajino, Toshitaka
name: Kusakabe, Motohiko
name: Hayakawa, Takehito
name: Cheoun, Myung-Ki
name: Ko, Heamin
name: Mathews, Grant J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We calculate Galactic Chemical Evolution (GCE) of Mo and Ru by taking into account the contribution from $νp$-process nucleosynthesis. We estimate yields of $p$-nuclei such as $^{92,94}\mathrm{Mo}$ and $^{96,98}\mathrm{Ru}$ through the $νp$-process in various supernova (SN) progenitors based upon recent models. In particular, the $νp$-process in energetic hypernovae produces a large amount of $p$-nuclei compared to the yield in ordinary core-collapse SNe. Because of this the abundances of $^{92,94}\mathrm{Mo}$ and $^{96,98}\mathrm{Ru}$ in the Galaxy are significantly enhanced at [Fe/H]=0 by the $νp$-process. We find that the $νp$-process in hypernovae is the main contributor to the elemental abundance of $^{92}$Mo at low metallicity [Fe/H$]
description: 15 pages, 5 figures, accepted for publication in ApJ
M31N 2005-09c: a fast FeII nova in the disk of M31
Creators: name: Hatzidimitriou, D.
name: Reig, P.
name: Manousakis, A.
name: Pietsch, W.
name: Burwitz, V.
name: Papamastorakis, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Classical novae are quite frequent in M~31. However, very few spectra of M31 novae have been studied to date, especially during the early decline phase. Our aim is to study the photometric and spectral evolution of a M31 nova event close to outburst. We present photometric and spectroscopic observations of M31N 2005-09c, a classical nova in the disk of M31, using the 1.3m telescope of the Skinakas Observatory in Crete (Greece), starting on the 28th September, i.e. about 5 days after outburst, and ending on the 5th October 2005, i.e. about 12 days after outburst. We also have supplementary photometric observations from the La Sagra Observatory in Northern Andalucia, Spain, on September 29 and 30, October 3, 6 and 9 and November 1, 2005. The wavelength range covered by the spectra is from 3565 A to 8365 A. The spectra are of high S/N allowing the study of the evolution of the equivalent widths of the Balmer lines, as well as the identification of non-Balmer lines. The nova displays a typical early decline spectrum that is characterized by many weak FeII multiplet emissions. It is classified as a P$_{fe}$ nova. From the nova light curve, we have also derived its speed class, t=14+-2.5 days. As the nova evolved the Balmer lines became stronger and narrower. The early decline of the expansion velocity of the nova follows a power law in time with an exponent of \~-0.2.
Proposal of a gauge-invariant treatment of l=0,1-mode perturbations on Schwarzschild Background Spacetime
Creators: name: Nakamura, Kouji
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A gauge-invariant treatment of the monopole- ($l=0$) and dipole ($l=1$) modes in linear perturbations of the Schwarzschild background spacetime is proposed. Through this gauge-invariant treatment, we derived the solutions to the linearized Einstein equation for these modes with a generic matter field. In the vacuum case, these solutions include the Kerr parameter perturbations in the $l=1$ odd modes and the additional mass parameter perturbations of the Schwarzschild mass in the $l=0$ even modes. The linearized version of Birkhoff's theorem is also confirmed in a gauge-invariant manner. In this sense, our proposal is reasonable.
description: (v1) 10 pages, no figure; (v2) 16 pages, Section 2 is added for the explanation of our previous works, Additional explanations are added, references are added and re-organized; (v3) Some explanations are added, Typos are corrected
Παιδικές Δηλητηριάσεις: Σύνδεση Κλινικών και Εργαστηριακών Δεδομένων- Πρωτόκολλο Δειγματοληψίας στη Βόρειο Ελλάδα
Creators: name: Ντουμπάρα, Μαρία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Κλινική Φαρμακολογία
Βιομηχανική Φαρμακολογία
Καταγραφή
Clinical Pharmacology
Industrial Pharmacology
Reference

description: Σκοπός της παρούσας εργασίας αποτελεί η μελέτη κι ανάλυση των παιδικών δηλητηριάσεων, με αναζήτηση βιβλιογραφικών αναφορών και συσχέτιση των δεδομένων για την ορθή πρόληψη και διαχείριση τέτοιων περιστατικών. Στα πλαίσια της παρούσας εργασίας αναζητήθηκαν επιδημιολογικά στοιχεία κι αναλύθηκαν τρόποι αντιμετώπισης και πρόληψης, με επισήμανση στην εκτίμηση κινδύνου και τη διαχείριση περιστατικού παιδικής δηλητηρίασης. Επιπρόσθετα, διενεργήθηκε προσπάθεια σύνδεσης Κλινικών και Εργαστηριακών Δεδομένων σε άμεση συνεργασία κι αναφορά με το Εργαστήριο Τοξικολογίας του Αριστοτελείου Πανεπιστημίου της Θεσσαλονίκης, με στόχο την ορθότερη κι αμεσότερη διαχείριση περιστατικών παιδικής δηλητηρίασης και τη δημιουργία ενός χρήσιμου εργαλείου στα χέρια του θεράποντα ιατρού
description: The aim of this project is to study and analyze child poisoning, through searching of bibliographic references and correlating the data for the proper prevention and management of such incidents. In the context of this study, epidemiological data and methods of prevention, risk assessment and case management of child poisoning were analyzed. Additionally, an attempt was made to link Clinical and Laboratory Data in direct collaboration with the Laboratory of Toxicology of the Aristotle University of Thessaloniki, aiming at the correct and direct management of child poisoning incidents and the creation of a useful and available tool in the hands of the attending physician
Specular Andreev reflection in graphene
Creators: name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By combining the Dirac equation of relativistic quantum mechanics with the Bogoliubov-De Gennes equation of superconductivity we investigate the electron-hole conversion at a normal-metal--superconductor interface in graphene. We find that the Andreev reflection of Dirac fermions has several unusual features: 1) The electron and hole occupy different valleys of the band structure; 2) At normal incidence the electron-hole conversion happens with unit efficiency in spite of the large mismatch in Fermi wave lengths at the two sides of the interface; and, most fundamentally: 3) Away from normal incidence the reflection angle may be the same as the angle of incidence (retro-reflection) or it may be inverted (specular reflection). Specular Andreev reflection dominates in weakly doped graphene, when the Fermi wave length in the normal region is large compared to the superconducting coherence length. We find that the transition from retro-reflection to specular reflection with decreasing doping is associated with an inversion of the voltage dependence of the subgap conductance of the interface.
description: 7 pages, 6 figures; version 3: added an appendix with details of the calculation
Selfgravitation in a general-relativistic accretion of steady fluids
Creators: name: Kinasiewicz, Bogusz
name: Mach, Patryk
name: Malec, Edward
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The selfgravity of an infalling gas can alter significantly the accretion of gases. In the case of spherically symmetric steady flows of polytropic perfect fluids the mass accretion rate achieves maximal value when the mass of the fluid is 1/3 of the total mass. There are two weakly accreting regimes, one over-abundant and the other poor in fluid content. The analysis within the newtonian gravity suggests that selfgravitating fluids can be unstable, in contrast to the accretion of test fluids.
description: Typos corrected. Talk given at the 42nd Karpacz Winter School of Theoretical Physics, Ladek, Poland February 2006 on Current Mathematical Topics in Gravitation and Cosmology
Deformed Special Relativity and Deformed Symmetries in a Canonical Framework
Creators: name: Ghosh, Subir
name: Pal, Probir
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we have studied the nature of kinematical and dynamical laws in $κ$-Minkowski spacetime from a new perspective: the canonical phase space approach. We discuss a particular form of $κ$-Minkowski phase space algebra that yields the $κ$-extended finite Lorentz transformations derived in \cite{kim}. This is a particular form of a Deformed Special Relativity model that admits a modified energy-momentum dispersion law as well as noncommutative $κ$-Minkowski phase space. We show that this system can be completely mapped to a set of phase space variables that obey canonical (and {\it{not}} $κ$-Minkowski) phase space algebra and Special Relativity Lorentz transformation (and {\it{not}} $κ$-extended Lorentz transformation). The complete set of deformed symmetry generators are constructed that obeys an unmodified closed algebra but induce deformations in the symmetry transformations of the physical $κ$-Minkowski phase space variables. Furthermore, we demonstrate the usefulness and simplicity of this approach through a number of phenomenological applications both in classical and quantum mechanics. We also construct a Lagrangian for the $κ$-particle.
description: Revised version with change in Title and Abstract, No change in mathematical content, Reference section enlarged, Discussion on Soccer Ball Problem removed; Version to appear in PRD
Actions of F_\infty whose II_1 factors and orbit equivalence relations have prescribed fundamental group
Creators: name: Popa, Sorin
name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 46L10, 28D15, 46L35, 20E05

description: We show that given any subgroup F of R_+ which is either countable or belongs to a certain "large" class of uncountable subgroups, there exist continuously many free ergodic probability measure preserving actions σ_i of the free group with infinitely many generators such that their associated group measure space II_1 factors M_i and orbit equivalence relations R_i have fundamental group equal to F and with M_i (respectively R_i) stably non-isomorphic. Moreover, these actions can be taken so that R_i has no outer automorphisms and any automorphism of M_i is unitary conjugate to an automorphism that acts trivially on $L^\infty(X_i) \subset M_i$.
description: 1) Minor changes w.r.t. v2. 2) Comment about v2: a modification of our main result provides now the first examples of separable II_1 factors and equivalence relations with uncountable fundamental group different from R_+
Χρόνια νεφρική νόσος και μεταμόσχευση νεφρού. Συναισθηματικός δότης και ελληνική πραγματικότητα
Creators: name: Γαλανάκη, Βασιλική Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μεταμόσχευση νεφρού
Συναισθηματικός δότης
Ελληνικά δεδομένα μεταμοσχεύσεων
Kidney transplantation
Sentimental organ donor
Greek transplant data

description: Η παρούσα πτυχιακή εργασία αποτελεί μια προσπάθεια αποτίμησης της ελληνικής πραγματικότητας στον τομέα της μεταμόσχευσης νεφρού αλλά και μια κριτική προσέγγιση στο θεσμικό πλαίσιο που περιβάλλει αλλά και προσδιορίζει τις ελλείψεις που υπάρχουν στο νομοθετικό πλαίσιο καθώς και τα εμπόδια που ορθώνονται στην ανάπτυξη του θεσμού του συναισθηματικού δότη .Ακολουθήθηκε η μέθοδος αναζήτησης άρθρων από την Ελληνική και διεθνή βιβλιογραφία, σχετικά με το θέμα της μεταμόσχευσης νεφρού και του συναισθηματικού δότη. Η αναζήτηση γίνεται μέσω της διαδικτυακής πλατφόρμας Google Scholar και Pubmed με χρήση των λέξεων –κλειδιών: μεταμόσχευση νεφρού, συναισθηματικός δότης, ελληνικά δεδομένα μεταμοσχεύσεων . Στα αποτελέσματα παρουσιάζεται ο αριθμός των μεταμοσχεύσεων που έχουν πραγματοποιηθεί στην Ελληνική Επικράτεια καθώς και το μικρό ποσοστό από συναισθηματικό δότη στο σύνολο των πραγματοποιηθέντων μεταμοσχεύσεων. Συμπερασματικά τα αποτελέσματα της αναζήτησης συγκλίνουν στην άποψη ότι δεν γίνονται πολλές μεταμοσχεύσεις στην Ελλάδα, παρά το γεγονός ότι είναι μεγάλος ο αριθμός των ασθενών με χρόνια νεφρική νόσο, καθώς δεν υπάρχει μεγάλη δεξαμενή δοτών. Μερικοί από τους λόγους που δεν υπάρχουν δότες είναι η ανεπαρκής ενημέρωση για τη διαδικασία του να γίνει κάποιος δωρητής οργάνων αλλά και έλλειψη εξειδικευμένου προσωπικού σε μονάδες εντατικής θεραπείας καθώς και το νομικό κενό που διέπει τις μεταμοσχεύσεις
description: The present research tries to attempt an assessment of the Greek reality in the field of Kidney Transplantation but also and a critical approach of the institutional frame that surrounds and determines the lucks that exist at the legislative frame, as well as the obstacles that are erected at the enactment for the emotional donor. The following methodology was a search for articles from Greek and international literature on the issue of kidney transplantation and emotional donor. The search is done through the Google Scholar and Pubmed online platform using the key words: kidney transplant, emotional donor and Greek transplant data. The results are that there is a report of the data of the transplants that have been made at the Greek domain as well as the small presentence of the emotional donors at the total of transplantations. The search results converge on the view that there are not many transplants in Greece, despite the large number of patients with chronic kidney disease, as there is no large donor pool. Some of the reasons why there are no transplant donors are insufficient information about the process of becoming an organ donor, the luck of specialists at the intensive care unit and also the luck that exists at the legislative frame
Temperature Hysteresis of Magnetization in Lanthanum Manganite
Creators: name: Saiko, A. P.
name: Markevich, S. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose an explanation for the experimentally observed temperature hysteresis of magnetization in single crystals of lanthanum manganite (La0.8Sr0.2MnO3). The phenomenon is interpreted within the framework of a double-exchange model with allowance for the interaction of the magnetic subsystem with a bistable mode of the tilting-rotational oscillations in the correlated sublattice of MnO6 octahedra.
description: 3 pages, 1 figures
Projectively flat surfaces, null parallel distributions, and conformally symmetric manifolds
Creators: name: Derdzinski, Andrzej
name: Roter, Witold
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B30

description: We determine the local structure of all pseudo-Riemannian manifolds $(M,g)$ in dimensions $n\ge4$ whose Weyl conformal tensor $W$ is parallel and has rank 1 when treated as an operator acting on exterior 2-forms at each point. If one fixes three discrete parameters: the dimension $n\ge4$, the metric signature $--...++$, and a sign factor $ε=\pm1$ accounting for semidefiniteness of $W$, then the local-isometry types of our metrics $g$ correspond bijectively to equivalence classes of surfaces $\varSigma$ with equiaffine projectively flat torsionfree connections; the latter equivalence relation is provided by unimodular affine local diffeomorphisms. The surface $\varSigma$ arises, locally, as the leaf space of a codimension-two parallel distribution on $M$, naturally associated with $g$. We exhibit examples in which the leaves of the distribution form a fibration with the total space $M$ and base $\varSigma$, for a closed surface $\varSigma$ of any prescribed diffeomorphic type. Our result also completes a local classification of pseudo-Riemannian metrics with parallel Weyl tensor that are neither conformally flat nor locally symmetric: for those among such metrics which are not Ricci-recurrent, rank $W$ = 1, and so they belong to the class mentioned above; on the other hand, the Ricci-recurrent ones have already been classified by the second author.
description: 39 pages
Η διερεύνηση της σχέσης μεταξύ της αντικειμενικής κινητικής απόδοσης παιδιών σχολικής ηλικίας και της αντιλαμβανόμενης απόδοσης των ιδίων και των καθηγητών Φυσικής Αγωγής
Creators: name: Ταχτσίδης, Παναγιώτης Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αυτοαντίληψη
Κινητική απόδοση
Καθηγητές Φυσικης Αγωγής
Self-perception
Motor performance
Physical Education Teachers

description: Σκοπός της παρούσας έρευνας ήταν να διερευνηθεί η σχέση μεταξύ της αντικειμενικής κινητικής απόδοσης παιδιών σχολικής ηλικίας και της αντιλαμβανόμενης απόδοσης των ιδίων και των Καθηγητών Φυσικής Αγωγής. Δευτερεύων σκοπός ήταν η διερεύνηση των σχέσεων για κάθε φύλο των παιδιών ξεχωριστά. Ως εργαλείο αξιολόγησης της αντικειμενικής κινητικής απόδοσης των παιδιών χρησιμοποιήθηκε η σύντομη μορφή της κινητικής δέσμης Bruininks Ozeretsky Test of Motor Proficiency- 2 (Bruininks, 2005) ενώ ως εργαλείο αξιολόγησης της αντιλαμβανομενης κινητικής απόδοσης των ιδίων των παιδιών και των Καθηγητών Φυσικής Αγωγής χρησιμοποιήθηκε το ερωτηματολόγιο Physical Self Description Questionnaire (Marsh, 1994) καθώς και η λίστα παρατήρησης Movement Assessment Battery for Children-Second Edition (MABC-2) Checklist (Hederson, Sudgen & Barnett, 2007) αντίστοιχα. Στην έρευνα συμμετείχαν 119 παιδιά τα οποία φοιτούσαν σε τάξεις δημοτικών σχολείων γενικής εκπαίδευσης, ηλικίας 8 έως 12 ετών (Μ.Ο ηλικίας=10.25) και 64 Καθηγητές Φυσικής Αγωγής. Από την στατιστική ανάλυση των αποτελεσμάτων του ΒΟΤ-2 με το PSDQ δεν βρέθηκε στατιστικά σημαντική σχέση μεταξύ της αντικειμενικής και της αυτο-αντιλαμβανόμενης κινητικής απόδοσης των παιδιών. Αντιθέτως, βρέθηκε στατιστικά σημαντική σχέση (p
description: The purpose of this study was to investigate the relationship between the objective motor performance of school-aged children and the perceived performance of their own and their Physical Education Teachers. A secondary purpose was the investigation of the gender of children on the above relationships. The Bruininks Ozeretsky Test of Motor Proficiency-2 (Bruininks, 2005) was used as a tool for assessing the actual motor performance of children, the Physical Self Description Questionnaire (Marsh, 1994) was used as a tool for assessing the self-perceived motor performance of children and the Movement Assessment Battery for Children-Second Edition (MABC-2) Checklist (Hederson, Sudgen & Barnett, 2007) for assessing the perceived motor performance of the children’s Physical Education Teachers. The sample consisted of 119 children attending classes in elementary schools of general education, aged 8 to 12 (from the age of 10.25) and 64 Physical Education Teachers. Correlation analysis of the results of BOT-2 with the PSDQ did not reveal a statistically significant relationship between the objective and self-perceived motor performance of children. On the other hand, there was a statistically significant relationship (p
Entanglement of a microcanonical ensemble
Creators: name: Verhulst, Tobias
name: Naudts, Jan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We replace time-averaged entanglement by ensemble-averaged entanglement and derive a simple expression for the latter. We show how to calculate the ensemble average for a two-spin system and for the Jaynes-Cummings model. In both cases the time-dependent entanglement is known as well so that one can verify that the time average coincides with the ensemble average.
description: 10 pages
Line shape and the experimental determination of the $J/ψ\to γη_c$ branching fraction
Creators: name: Segovia, Jorge
name: Castellà, Jaume Tarrús
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the photon spectrum line-shape of the $J/ψ\to γη_c\to γX$ decay process in a nonrelativistic effective field theory (EFT) framework of quantum chromodynamics (QCD). We take into account the finite width of the $η_c$ and include $\mathcal{O}(v^2)$ corrections. We observe that the photon spectrum line-shape is divergent at large energies due to polynomially and logarithmically divergent terms, that upon integration over the photon energies in Dimensional Regularization (DR) produce no contribution or can be renormalized. We propose to subtract these divergences at the line-shape level in a manner consistent with the calculation of the width in DR and $\overline{\hbox{MS}}$ scheme. We analyze CLEO's data with the proposed subtracted line-shape and find good agreement between the theoretical prediction and the experimental result.
description: 13 pages, 2 figures. Journal version
Η ηγεσία στους μη κερδοσκοπικούς πολιτιστικούς οργανισμούς στην Ελλάδα. Μια διερευνητική προσέγγιση του φαινομένου της ηγεσίας στο Φεστιβάλ Αθηνών & Επιδαύρου και στο Διεθνές Φεστιβάλ Κινηματογράφου
Creators: name: Τρούση, Χριστίνα Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ηγεσία
Καλλιτεχνικά Φεστιβάλ
Μη κερδοσκοπικοί πολιτιστικοί οργανισμοί
Leadership
Cultural management
Art Festivals

description: Η ραγδαία τεχνολογική ανάπτυξη σε συνδυασμό με την αυξανόμενη παγκοσμιοποίηση και τον διεθνή ανταγωνισμό έχουν καταλυτική επίδραση στην βιωσιμότητα των πολιτιστικών οργανισμών σε παγκόσμιο επίπεδο. Προκειμένου οι οργανισμοί να ανταποκριθούν στις σύγχρονες προκλήσεις, απαιτούνται ηγέτες με τεχνογνωσία και ηθικές πεποιθήσεις που μπορούν να αναπτύσσουν και να υλοποιούν στρατηγικές σε ένα κλίμα αστάθειας και ρευστότητας. H παρούσα διπλωματική εργασία διερευνά το φαινόμενο της ηγεσίας στους ελληνικούς μη κερδοσκοπικούς πολιτιστικούς οργανισμούς, εφαρμόζοντας τη μέθοδο του μοντέλου περίπτωσης στα δύο σημαντικότερα και μακροβιότερα φεστιβάλ της χώρας, το Φεστιβάλ Αθηνών & Επιδαύρου και το Διεθνές Φεστιβάλ Κινηματογράφου Θεσσαλονίκης. Εξετάζοντας τις ηγετικές συμπεριφορές των διοικητικών προϊσταμένων των εν λόγω οργανισμών επιχειρείται μια συγκριτική προσέγγισή τους, με σκοπό τη διατύπωση προτάσεων σε σχέση με το ηγετικό στυλ που ενδείκνυται για τα καλλιτεχνικά φεστιβάλ, όσον αφορά στη βελτιστοποίηση της διοργάνωσής τους και την ενίσχυση των εργαζομένων τους
description: Rapid technological development in conjunction with the increasing globalization and international competition has a catalytic effect on the sustainability of cultural organizations worldwide. Cultural organizations, in order to respond to modern challenges, they require leaders with expert knowledge and ethical beliefs, able to develop and implement strategies in a climate of ambiguity and change. The present thesis examines the leadership phenomenon in Greek non-profit cultural organizations, applying the methodology of case study to the two most well-established and profound festivals in Greece, that is Athens & Epidaurus Festival and Thessaloniki International Film Festival. Specifically, it analyzes the leadership style of their administrative superiors, while attempting a comparative approach to the leadership behavior of the executives concerned, with an aim to make proposals for optimal management of the cultural non-profit organizations in Greece
Resonant Damping of Kink Modes in Solar Coronal Slabs
Creators: name: Yu, Hui
name: Li, Bo
name: Chen, Shaoxia
name: Guo, Mingzhe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We examine resonantly damped kink modes in straight coronal slabs, paying special attention to the effects of the formulation for the transverse density distribution ("profile"). We work in the framework of pressure-less, gravity-free, resistive magnetohydrodynamics, and we adopt the dissipative-eigenmode perspective. The density profile is restricted to be one-dimensional, but nonetheless allowed to take a generic form characterized by a continuous transition layer connecting a uniform interior to a uniform exterior. A dispersion relation (DR) is derived in the thin-boundary limit, yielding analytical expressions for the eigenfrequencies that generalize known results in various aspects. We find that the analytical rather than the numerical solutions to the thin-boundary DR serve better the purpose for validating our self-consistent resistive solutions. More importantly, the eigenfrequencies are found to be sensitive to profile specifications, the ratio of the imaginary to the real part readily varying by a factor of two when one profile is used in place of another. Our eigenmode computations are also examined in the context of impulsively excited kink waves, suggesting the importance of resonant absorption for sufficiently oblique components when the spatial scale of the exciter is comparable to the slab half-width.
description: Accepted for publication in Solar Physics, subject to further stylistic changes
Observations of the Naked-Eye GRB 080319B: Implications of Nature's Brightest Explosion
Creators: name: Bloom, J. S.
name: Perley, D. A.
name: Li, W.
name: Butler, N. R.
name: Miller, A. A.
name: Kocevski, D.
name: Kann, D. A.
name: Foley, R. J.
name: Chen, H. -W.
name: Filippenko, A. V.
name: Starr, D. L.
name: Macomber, B.
name: Prochaska, J. X.
name: Chornock, R.
name: Poznanski, D.
name: Klose, S.
name: Skrutskie, M. F.
name: Lopez, S.
name: Hall, P.
name: Glazebrook, K.
name: Blake, C. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first gamma-ray burst (GRB) confirmed to be bright enough to be seen with the naked eye, GRB 080319B at redshift z = 0.937, allowed for exquisite follow-up observations across the electromagnetic spectrum. We present our detailed optical and infrared observations of the afterglow, consisting of over 5000 images starting 51 s after the GRB trigger, in concert with our own analysis of the Swift data. The event is extreme not only in observed properties but intrinsically: it was the most luminous event ever recorded at optical and infrared wavelengths and had an exceedingly high isotropic-equivalent energy release in gamma-rays. At early times, the afterglow evolution is broadly consistent with being reverse-shock dominated, but then is subsumed by a forward shock at around 1000 s. The overall spectral energy distribution, spanning from ultraviolet through near-infrared wavelengths, shows no evidence for a significant amount of dust extinction in the host frame. The afterglow evolution, however, is highly chromatic: starting at about 1000 s the index shifts blueward before shifting back to the red at late times. In our deepest late-time observations, we find tentative evidence for an optical jet break and a luminous supernova. Finally, we examine the detectability of such events with current and future facilities and find that such an event could be detected in gamma-rays by BAT out to z = 10.7 (8 sigma), while the nominal EXIST sensitivity would allow detection to z ~ 32. At K band, this source would have been easily detected with meter-class telescopes to z ~ 17.
description: Accepted to ApJ (18 Sept 2008), 45 pages, 9 figures. Updated following referee comments. Added photometry from early-time (saturated) IR imaging starting at 51 s post trigger. A full machine-readable table of all photometry used in our plots, figures, and analysis is given at http://astro.berkeley.edu/~dperley/grbpub/080319b/photometry.txt
Evaluative Adjectives: A Cognitive Approach
Creators: name: Καρατσόρη Ιωάννα, Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αξιολογική λειτουργία επιθέτων
Γνωσιακή γλωσσολογία
Μεταφορά
Evaluative adjectives
Cognitive linguistics
Metaphor

description: The present study is concerned with evaluative adjectives, and particularly with the metaphoricity and metonymicity surrounding the use of such adjectives in context. The study deals with Greek composite structures consisting of adjectives and nouns appearing in the headlines of Greek newspapers. All of the headlines comment on current political and economical matters that have been dominating in Greece during the last years. The purpose of the study is to delve into the workings of the various processes of figurative language operating in the composite structures (e.g. metaphor, metonymy, irony etc.). In fact, it is hypothesized that the dynamicity of the entire structure is licensed by the processes operating in the adjective that manages to convey in a remarkable manner the evaluation expressed by the author of the headline on the topic that is being presented.
description: Η παρούσα μεταπτυχιακή εργασία έχει ως βασικό της θέμα την αξιολογική λειτουργία των επιθέτων, και ειδικότερα την παρουσία γνωσιακών διεργασιών όπως η μεταφορά και η μετωνυμία κατά τη χρήση των επιθέτων αυτών. Όλα τα παραδείγματα τα οποία αναλύονται αποτελούνται από δομές επιθέτου και ουσιαστικού και προέρχονται από τίτλους ελληνικών εφημερίδων. Οι τίτλοι αυτοί είναι τίτλοι άρθρων τα οποία αφορούν σύγχρονα πολιτικά και οικονομικά ζητήματα της ελληνικής πραγματικότητας. Σκοπός της έρευνας είναι να εξετάσει τη χρήση μη κυριολεκτικής γλώσσας στις δομές των επιθέτων (π.χ. μεταφορά, μετωνυμία, ειρωνεία κλπ.). Μάλιστα τίθεται η υπόθεση πως όλη η δυναμική των εκφράσεων-τίτλων εφημερίδων έγκειται ακριβώς σε αυτήν την χρήση μη κυριολεκτικής γλώσσας και ως αποτέλεσμα ο/η συγγραφές καταφέρνει με πολύ άμεσο τρόπο να εκφράσει την άποψη του/της σχετικά με το θέμα το οποίο συζητά στο άρθρο.
Meaning Shifts in Uighur Auxiliary Verbs
Creators: name: Taub, Sarah
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: uig

description: Two drafts of a term paper for Linguistics 240B (Field Methods) in Spring 1993: (1) a first draft entitled "Uighur Verb Compounds: Semantic Shifts in Auxiliary Verbs"; (2) a final draft entitled "Meaning Shifts in Uighur Auxiliary Verbs: A Study of Grammaticalization in Progess".
Water Quality Integrated System (WQIS) User Manual
Creators: name: Penna, Pierluigi
name: Moro, Fabrizio
Publisher: name: Zenodo
Year: 2022
Subjects: Adriatic sea,European directives,Microbial contamination,Rainfall events,Decision support system,Bathing water management

description: This manual was drawn up during the activities foreseen in the EU INTERREG Watercare project. After the design and implementation of the WQIS in the pilot site of Fano, the authors have drafted this manual in order to be used for field operation by all partners of the project. For more information about the WQIS, you can refer to the deliverables of the project that you can find at this link.
HI and OH Absorption toward NGC6240
Creators: name: Baan, Willem A.
name: Hagiwara, Yoshiaki
name: Hofner, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: VLA observations of large-scale HI and OH absorption in the merging galaxy of NGC6240 are presented with 1 arcsec resolution. HI absorption is found across large areas of the extended radio continuum structure with a strong concentration towards the double-nucleus. The OH absorption is confined to the nuclear region. The HI and OH observations identify fractions of the gas disks of the two galaxies and confirm the presence of central gas accumulation between the nuclei. The data clearly identify the nucleus of the southern galaxy as the origin of the symmetric superwind outflow and also reveal blue-shifted components resulting from a nuclear starburst. Various absorption components are associated with large-scale dynamics of the system including a foreground dust lane crossing the radio structure in the northwest region.
description: To be published in the ApJ, Vol 661, May 20, 2007, 32 pages, 11 figures
Démonstration sur la publication d'une REL
Creators: name: Houssem, BEN AYED
Publisher: name: Zenodo
Year: 2021
Subjects: Pédagogie , Creative Commons, démo, ZENODO

description: Exercice pédagogique : Sélection d'un REL CC BY inséré dans la plaque n 2 Sélection et traduction d'une seconde REL CC BY dans la plaque n 3 Captures d'écrans des étapes de partage du partage du document dans la plaque n 3 les licences et source de l'auteur original des différents RELs insérés sous forme de liens hypertextes
Σχολιασμένη μετάφραση της νουβέλας La Casa dei Secoli του Guido Gozzano. Το Τορίνο μέσα από το βλέμμα του συγγραφέα
Creators: name: Χατζηκυριάκου, Έλενα Άνθιμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Γκουίντο Γκοτσάνο
Κρεπουσκολαρισμός
Σχολιασμένη μετάφραση
Guido Gozzano
Crepuscolarismo
Commentary translation

description: Ο σκοπός αυτής της εργασίας είναι ο εξής: μέσα από την μετάφραση της νουβέλας του Γκουίντο Γκοτσάνο, που προέρχεται από το βιβλίο Gozzano, L’altare del passato που εκδόθηκε το 1996 και αποτελεί μια συλλογή διηγημάτων από τον εκδοτικό οίκο Passigli Editori, να γίνει γνωστό το έργο του στο ελληνικό κοινό, όχι μόνο η νουβέλα η οποία έχει επιλεχθεί αλλά και το ύφος του συγγραφέα, το κίνημα Κρεπουσκολαρισμός και φυσικά ο ίδιος ο συγγραφέας, καθώς κάθε φορά που ανέφερα το όνομα του στον περίγυρο μου, κανείς δεν έδειχνε να το αναγνωρίζει. Η αιτία πολύ πιθανό να βρίσκεται στο ότι ο Γκούιντο Γκοτσάνο δεν έχει μεταφραστεί στα ελληνικά μετά το 1985. Επιπλέον, θα ήθελα να αναδείξω την αγάπη του για τον τόπο του, τις σκέψεις και τις επιρροές του.Τέλος, η εργασία περιλαμβάνει ένα θεωρητικό πλαίσιο και την σχολιασμένη μετάφραση του κειμένου La casa dei secoli.
description: The purpose of this thesis is the following: through the translation of Guido Gozzano’s novel, from the book Gozzano, L’altare del passato which was published at 1996 and consisted as a collection of short stories from the publishing house Passigli Editori, to announce his work to the Greek audience, not only the novel that has been chosen but also his style, the movement Crepuscolarismo and of course himself, because whenever I mentioned his name at any of my acquaintances, it seemed like nobody could recognize it. The reason can be possibly found by the fact that Guido Gozzano has not been translated in Greek after 1985. Furthermore, I would like to show his affection for his hometown, his thoughts and influences.Finally, the thesis contains a theoretical framework and the commented translation of the text, La casa dei secoli.
Light scattering from ultracold atoms in optical lattices as an optical probe of quantum statistics
Creators: name: Mekhov, Igor B.
name: Maschler, Christoph
name: Ritsch, Helmut
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study off-resonant collective light scattering from ultracold atoms trapped in an optical lattice. Scattering from different atomic quantum states creates different quantum states of the scattered light, which can be distinguished by measurements of the spatial intensity distribution, quadrature variances, photon statistics, or spectral measurements. In particular, angle-resolved intensity measurements reflect global statistics of atoms (total number of radiating atoms) as well as local statistical quantities (single-site statistics even without an optical access to a single site) and pair correlations between different sites. As a striking example we consider scattering from transversally illuminated atoms into an optical cavity mode. For the Mott insulator state, similar to classical diffraction, the number of photons scattered into a cavity is zero due to destructive interference, while for the superfluid state it is nonzero and proportional to the number of atoms. Moreover, we demonstrate that light scattering into a standing-wave cavity has a nontrivial angle dependence, including the appearance of narrow features at angles, where classical diffraction predicts zero. The measurement procedure corresponds to the quantum non-demolition (QND) measurement of various atomic variables by observing light.
description: 15 pages, 5 figures
Abstraction and Analogy-Making in Artificial Intelligence
Creators: name: Mitchell, Melanie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Conceptual abstraction and analogy-making are key abilities underlying humans' abilities to learn, reason, and robustly adapt their knowledge to new domains. Despite of a long history of research on constructing AI systems with these abilities, no current AI system is anywhere close to a capability of forming humanlike abstractions or analogies. This paper reviews the advantages and limitations of several approaches toward this goal, including symbolic methods, deep learning, and probabilistic program induction. The paper concludes with several proposals for designing challenge tasks and evaluation measures in order to make quantifiable and generalizable progress in this area.
description: Revised version. 30 pages, 9 figures. To appear in Annals of the New York Academy of Sciences