cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fermionic un-particles, gauge interactions and the $β$ function
Creators: name: Basu, Rahul
name: Choudhury, Debajyoti
name: Mani, H. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The dynamics of fermionic unparticles is developed from first principles. It is shown that any unparticle, whether fermionic or bosonic, can be recast in terms of a canonically quantized field, but with non-local interaction terms. We further develop a possible gauge theory for fermionic unparticles. Computing the consequent contribution of un-fermions to the $β$ function of the theory, it is shown that this can be viewed as the sum of two contributions, one fermion-like and the other scalar-like. However, if full conformal invariance is imposed, the latter vanishes identically. We discuss the consequences thereof as well as some general phenomenological issues.
description: 15 pages, LateX, uses axocolor.sty, included
Kalkayotl: A cluster distance inference code
Creators: name: Olivares, J.
name: Sarro, L. M.
name: Bouy, H.
name: Miret-Roig, N.
name: Casamiquela, L.
name: Galli, P. A. B.
name: Berihuete, A.
name: Tarricq, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Stellar clusters are benchmarks for theories of star formation and evolution. The high precision parallax data of the Gaia mission allows significant improvements in the distance determination to stellar clusters and its stars. In order to have accurate and precise distance determinations, systematics like the parallax spatial correlations need to be accounted for, especially for stars in small sky regions. Aims: Provide the astrophysical community with a free and open code designed to simultaneously infer cluster parameters (i.e. distance and size) and the distances to its stars using Gaia parallax measurements. It includes cluster oriented prior families and is specifically designed to deal with the Gaia parallax spatial correlations. Methods: A Bayesian hierarchical model is created to allow the inference of both the cluster parameters and distances to its stars. Results: Using synthetic data that mimics Gaia parallax uncertainties and spatial correlations, we observe that our cluster oriented prior families result in distance estimates with smaller errors than those obtained with an exponentially decreasing space density prior. In addition, the treatment of the parallax spatial correlations minimizes errors in the estimated cluster size and stellar distances and avoids the underestimation of uncertainties. Although neglecting the parallax spatial correlations has no impact on the accuracy of cluster distance determinations, it underestimates the uncertainties and may result in measurements that are incompatible with the true value. Conclusions: The combination of prior knowledge with the treatment of Gaia parallax spatial correlations produces accurate (error <10%) and trustworthy estimates (i.e. true values contained within the 2$σ$ uncertainties) of clusters distances for clusters up to ~5 kpc, and cluster sizes for clusters up to ~1 kpc.
description: 14 pages, 10 figures, accepted in A&A, for the associated code visit https://github.com/olivares-j/Kalkayotl
Minority Spin Condensate in Spin-Polarized Superfluid $^3$He-A$_1$ Phase
Creators: name: Yamaguchi, A.
name: Kobayashi, S.
name: Ishimoto, H.
name: Kojima, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The spin-polarized superfluid $^3$He A$_1$ phase, which forms below 3 mK in external magnetic field, serves as a material in which theoretical notions of fundamental magnetic processes and macroscopic quantum spin phenomena may be tested. Conventionally, the superfluid component of the A$_1$ phase is understood to contain only the majority spin condensate having energetically-favoured paired spins directed along the external field and no minority spin condensate having paired spins in the opposite direction. We have developed a novel mechanical spin density detector to measure the spin relaxation in the A$_1$ phase as functions of temperature, pressure and magnetic field. The mechanical spin detector is based in principle on the unique magnetic fountain effect occurring only in the A$_1$ phase (occurring between two transition temperatures, T$_{c1}$ and T$_{c2}$). Unexpectedly, the spin relaxation rate increases rapidly as the temperature is decreased towards T$_{c2}$. Our measurements, together with Leggett-Takagi and Monien-Tewordt theories, demonstrate that a minute presence of minority spin pairs is responsible for the unexpected spin relaxation phenomena in A$_1$ phase.
description: 13 pages, 4 figures. Accepted for publication in Nature
Rapid Star Formation in the Presence of Active Galactic Nuclei
Creators: name: Lintott, Chris
name: Viti, Serena
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent observations reveal galaxies in the early Universe (2
description: 4 pages, 1 figure. Accepted by the Astrophysical Journal Letters
Two New Gravitationally Lensed Double Quasars from the Sloan Digital Sky Survey
Creators: name: Inada, Naohisa
name: Oguri, Masamune
name: Becker, Robert H.
name: White, Richard L.
name: Kayo, Issha
name: Kochanek, Christopher S.
name: Hall, Patrick B.
name: Schneider, Donald P.
name: York, Donald G.
name: Richards, Gordon T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discoveries of the two-image gravitationally lensed quasars, SDSS J0746+4403 and SDSS J1406+6126, selected from the Sloan Digital Sky Survey (SDSS). SDSS J0746+4403, which will be included in our lens sample for statistics and cosmology, has a source redshift of z_s=2.00, an estimated lens redshift of z_l~0.3, and an image separation of 1.08". SDSS J1406+6126 has a source redshift of z_s=2.13, a spectroscopically measured lens redshift of z_l=0.27, and an image separation of 1.98". We find that the two quasar images of SDSS J1406+6126 have different intervening MgII absorption strengths, which are suggestive of large variations of absorbers on kpc scales. The positions and fluxes of both the lensed quasar systems are easily reproduced by simple mass models with reasonable parameter values. These objects bring to 18 the number of lensed quasars that have been discovered from the SDSS data.
description: 25 pages, 6 figures, The Astronomical Journal accepted
On the Consistency of Twisted Gauge Theory
Creators: name: Giller, S.
name: Gonera, C.
name: Kosinski, P.
name: Maslanka, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is argued that the twisted gauge theory is consistent provided it exhibits also the standard noncommutative gauge symmetry.
description: 7 pages, no figures;two references added
The Benefits of Trace Cu in Wrought Al-Mg Alloys
Creators: name: Medrano, S.
name: Zhao, H.
name: Gault, B.
name: De Geuser, F.
name: Sinclair, C. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The softening and strengthening contributions in pre-deformed and aged Al-Mg-Cu alloys containing 3wt.%Mg and 0.5wt.%Cu are evaluated by a combination of microscopy, mechanical testing and modelling. A refined phenomenological model for the work hardening response, accounting for the separate effects of recovery and precipitation, is shown to be suitable for an unambiguous determination of the precipitation hardening contribution in these alloys. Significantly, it is found that the mechanical response of these alloys is not strongly impacted by Cu content (in the low Cu content regime), pre-deformation level or aging temperature meaning that the alloys are robust with respect to variations in composition. This is interesting from the perspective of alloy design concepts based on `recycling friendly' compositions in applications that include paint-baking.
description: 33 pages, 10 figures
Pathways and kinetic barriers in mechanical unfolding and refolding of RNA and proteins
Creators: name: Hyeon, Changbong
name: Dima, Ruxandra I
name: Thirumalai, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Using self-organized polymer models, we predict mechanical unfolding and refolding pathways of ribo-zymes, and the green fluorescent protein. In agreement with experiments, there are between six and eight unfolding transitions in the Tetrahymena ribozyme. Depending on the loading rate, the number of rips in the force-ramp unfolding of the Azoarcus ribozymes is between two and four. Force-quench refolding of the P4-P6 subdomain of the Tetrahymena ribozyme occurs through a compact intermediate. Subsequent formation of tertiary contacts between helices P5b-P6a and P5a/P5c-P4 leads to the native state. The force-quench refolding pathways agree with ensemble experiments. In the dominant unfolding route, the N-terminal a helix of GFP unravels first, followed by disruption of the N terminus b strand. There is a third intermediate that involves disruption of three other strands. In accord with experiments, the force-quench refolding pathway of GFP is hierarchic, with the rate-limiting step being the closure of the barrel.
description: 33 pages 7 figures
Dye-Encapsulated Zeolitic Imidazolate Framework (ZIF-71) for Fluorochromic Sensing of Pressure, Temperature, and Volatile Solvents
Creators: name: Zhang, Yang
name: Gutiérrez, Mario
name: Chaudhari, Abhijeet K.
name: Tan, Jin-Chong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Luminescent metal-organic frameworks (MOFs) offer a multifunctional platform for creating non-invasive sensors and tuneable optoelectronics. However, fluorochromic materials that are photophysically resilient and show high sensitivity towards different physical and chemical stimuli are scarce. We report a facile host-guest nanoconfinement strategy to construct a fluorescent hybrid material with multiple sensing capabilities. We design and fabricate a new Guest@MOF material: comprising a zeolitic MOF (ZIF-71) as a nanoporous host for encapsulating rhodamine B (RhB dye) guest molecules, resulting in the RhB@ZIF-71 system with mechanochromic, thermochromic, and solvatochromic sensing response. The fluorochromic sensing properties stem from the nanoconfinement effect that ZIF-71 imposes on RhB monomers, yielding the H- or J-type aggregates with tuneable photophysical and photochemical properties. For mechanochromism, the external pressure causes an emission red shift in a linear fashion, switching RhB guests from H-type to J-type aggregates through a shear deformation. For thermochromism, we demonstrate a linear scaling as a function of temperature due to the spatial restriction imposed on J-type aggregates incarcerated in ZIF-71 pores. Harnessing the solvatochromism of RhB@ZIF-71, we identified three diverse groups of volatile organic compounds. The multimodal sensing response pave the way to smart applications like photonic pressure sensors, non-invasive thermometers, and ultrasensitive chemosensors.
description: 30 pages, 6 figures, 1 scheme, 2 tables, 1 Supporting Information
Τα Δικαιώματα του Παιδιού στην Πρωτοβάθμια Εκπαίδευση. Το παράδειγμα των βιβλίων της Γλώσσας.:
Creators: name: Αναστασοπούλου, Στεργιανή Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Δικαιώματα του Παιδιού
Εκπαίδευση
Ελληνική Γλώσσα
Children’s Rights
Education
Greek Language

description: Σκοπός της παρούσας εργασίας είναι η ανάδειξη της σχέσης των δικαιωμάτων του παιδιού, όπως αυτά ορίζονται από τη Διεθνή Σύμβαση για τα Δικαιώματα του Παιδιού, με το μάθημα της ελληνικής γλώσσας στο δημοτικό σχολείο, στο πλαίσιο του ελληνικού εκπαιδευτικού συστήματος. Στο πρώτο μέρος της εργασίας γίνεται αναφορά στη βιβλιογραφία σχετικά με τα δικαιώματα του παιδιού και την εκπαίδευση, αναλύεται το ιστορικό πλαίσιο εξέλιξής τους και διερευνάται η θέση των δικαιωμάτων στο ελληνικό εκπαιδευτικό σύστημα. Στο δεύτερο μέρος, γίνεται αναφορά στην ερευνητική μέθοδο (ανάλυση περιεχομένου) και καταγράφονται αναλυτικά οι αναφορές των δικαιωμάτων στα βιβλία. Τέλος, στο τρίτο μέρος, αναλύονται τα συμπεράσματα που προέκυψαν από την ανάλυση περιεχομένου των βιβλίων, δηλαδή ποια είναι η θέση των δικαιωμάτων στα βιβλία της γλώσσας – αν αυτή υπάρχει και κατά πόσο αυτό γίνεται με τρόπο ουσιαστικό και παραγωγικό – και, στο πλαίσιο του κριτικού αναστοχασμού, προτείνονται μέθοδοι με τις οποίες θα δοθεί η ευκαιρία στα παιδιά να κατανοήσουν τα δικαιώματά τους και να αποκτήσουν ουσιαστική συμμετοχή σε αυτά.
description: The purpose of this study is to show the correlation between the children’s rights, as they are defined by the International Convention on the Rights of the Child, and the subject of the Greek language in the elementary school, in the context of the Greek educational system. The first part of the study refers to the bibliography of the children’s rights in the education, analyzes the historical context of their evolution and examines the rights’ position in the Greek educational system. The second part refers to the research method (content analysis) and records extensively the right’s references within the books. Finally, the third part analyzes the conclusions, which are resulted by the books’ content analysis, i.e. which is the rights’ position into the books – if that exists and if that is essential and productive for the children – and, in the context of critical self-reflection, are proposed methods, which are going to give a chance to the children to understand their rights and to exercise them.
Ευθανασία
Creators: name: Παπαχρηστου, Μαριάνθη Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ευθανασία
Ηθική
Νομικό
Euthanasia
Moral
Legally

description: Ευθανασία είναι η σύντμηση της ζωής ενός ασθενή που πάσχει από επίπονη και ανίατη ασθένεια. Απαντάται σε όλα τα στάδια της ανθρώπινης ιστορίας, προκαλώντας πάντα ηθικούς προβληματισμούς. Χωρίζεται σε διάφορα είδη με κριτήριο το ποιος παίρνει την απόφαση και το ποιος την εκτελεί. Τα περισσότερα είδη της ευθανασίας συμβαίνουν καθημερινά μέσα στις ΜΕΘ. Όλες οι θρησκείες απαγορεύουν την ευθανασία παρόλο που ένας εύκολος και ανώδυνος θάνατος είναι η ευχή των περισσοτέρων ασθενών που πάσχουν από νόσημα τελικού σταδίου. Στην Ελλάδα, σε αντίθεση με άλλες χώρες που έχουν επιτρέψει την ευθανασία, η πρακτική αυτή απαγορεύεται μέσα από το νομικό πλαίσιο. Το βασικό πρόβλημα, ηθικό και νομικό, είναι το κατά πόσο ένα τρίτο πρόσωπο, ειδικός ή όχι, σε συσχέτιση ή όχι, έχει το δικαίωμα να δώσει τέλος στη ζωή του συνανθρώπου του, ακόμα και όταν αυτό είναι ανώδυνο και γαλήνιο. Παρόλα αυτά, οι σύγχρονες εξελίξεις αλλά και το παράδειγμα άλλων χωρών δημιουργούν σκέψεις για αναθεώρηση των νόμων.
description: Euthanasia is the practice of killing without pain a patient who is suffering from a painful disease that can not be cured. Euthanasia is met in all periods of human history, causing always moral problems. It is distinguished in several different types, in terms of who gets the decision and who executes it. The most types of euthanasia take place everyday at ICU. All religious forbid euthanasia, although a comfortable and dignified death constitutes the wish of the most terminal disease patient. In Greece, contrarily with other countries that allow euthanasia, this practice is forbidden through the legally frame. The major problem, moral and legally, is weather a third person, expert or not, relative or not, has the right to take charge of the life of his or her fellowman and to give an end to it, even if that be a painless and serene one. Even though, modern evolution and the example of other countries cause thoughts for reconsideration of laws.
Απόψεις Εκπαιδευτικών Πρωτοβάθμιας Εκπαίδευσης για τη Διγλωσσία: Μια ποιοτική έρευνα σε εκπαιδευτικούς του Ν. Τρικάλων:
Creators: name: Κόσσυβα, Παρασκευή Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Διαπολιτισμική Εκπαίδευση
Διγλωσσία
Εκπαιδευτικοί
Intercultural education
Bilingualism
Teachers

description: Σκοπός αυτής της εργασίας είναι να διερευνήσει τις απόψεις εκπαιδευτικών της Πρωτοβάθμιας Εκπαίδευσης του Νομού Τρικάλων σχετικά με τη διγλωσσία των μαθητών τους. Στο θεωρητικό μέρος, επιχειρείται η παρουσίαση του φαινομένου της διγλωσσίας μέσα από την ομαδοποίηση των συνιστωσών του όπως επίσης και η παρουσίαση των σύγχρονων επιστημονικών προσεγγίσεων για τη σχέση διγλωσσίας και νόησης όπως επίσης και για τη σχέση διγλωσσίας και μάθησης. Στο ερευνητικό μέρος, παρουσιάζονται και αναλύονται τα αποτελέσματα της ποιοτικής έρευνας η οποία διεξήχθη σε δείγμα δέκα εκπαιδευτικών Πρωτοβάθμιας Εκπαίδευσης του Νομού Τρικάλων. Διερευνώνται οι απόψεις των εκπαιδευτικών σχετικά με τη διγλωσσία των μαθητών τους, η εφαρμογή στην τάξη των σύγχρονων επιστημονικών θεωριών για τη σχέση διγλωσσίας και μάθησης και επιχειρείται μια σύγκριση με αποτελέσματα παλαιότερων ερευνών που έχουν διεξαχθεί στον ελληνικό χώρο στο συγκεκριμένο θέμα. Στόχος της εργασίας, επίσης, είναι να διαπιστώσει μια πιθανή μεταστροφή των απόψεων των εκπαιδευτικών αναφορικά στη διγλωσσία των μαθητών τους όπως επίσης και να διατυπωθούν κάποιες προτάσεις προκειμένου να καταστεί δυνατή η αξιοποίηση της διγλωσσίας μέσα σε μια μικτή τάξη αποτελούμενη τόσο από δίγλωσσους όσο και από μονόγλωσσους μαθητές.
description: The aim of this study is to examine and note the opinions of Greek Primary teachers in the area of Trikala on their students’ bilingualism. In the first part of the study, we present the phenomenon of bilingualism through a classification of its various aspects and also we present the current scientific approaches which describe the relationship between bilingualism and the mind as well as bilingualism and learning. In the second part, we present and explicate the results of our qualitative research which was conducted among ten primary teachers in the area of Trikala. We looked into teachers’ views on their students’ bilingualism and whether these teachers try to apply current scientific approaches in their classes in order to promote learning. Also, we compared the results of our study to those of earlier studies conducted in Greece in order to detect a possible shift in teachers’ beliefs. Finally we made a number of suggestions aiming at optimizing teaching in mixed classes which are composed of both monolingual and bilingual students.
Decoherence of a Spin Qubit Coupled with Spin Chain
Creators: name: Itakura, Toshifumi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this report, we examine the relaxation phenomena of a spin qubit coupled to a spin chain with a $1/r^2$ interaction.
Measuring Angle of Attack of a Model Wind Turbine Rotor under Pitch and Yaw Conditions
Creators: name: Soto, Rodrigo
Publisher: name: Zenodo
Year: 2019
Subjects: Angle of attack, HAWT, Wind tunnel.

description: The angle of attack (AoA) over specific positions is one of the most important variables to get a performance indicator or feedback information for passive or active control. Even when operated under rated conditions, AoA will differ over the spanwise position. Unfortunately, this parameter is generally indirectly calculated. Two methods for determining the AoA based on pressure measurements are applied: Three-hole probes and pressure taps. The main goal is to present an alternative method to obtain the AoA that the three-hole probes and give a full comparison between them, to use it as a future parameter/performance indicator tool.
Hubbard's Adventures in ${\cal N}=4$ SYM-land? Some non-perturbative considerations on finite length operators
Creators: name: Feverati, Giovanni
name: Fioravanti, Davide
name: Grinza, Paolo
name: Rossi, Marco
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: As the Hubbard energy at half filling is believed to reproduce at strong coupling (part of) the all loop expansion of the dimensions in the SU(2) sector of the planar $ {\cal N}=4$ SYM, we compute an exact non-perturbative expression for it. For this aim, we use the effective and well-known idea in 2D statistical field theory to convert the Bethe Ansatz equations into two coupled non-linear integral equations (NLIEs). We focus our attention on the highest anomalous dimension for fixed bare dimension or length, $L$, analysing the many advantages of this method for extracting exact behaviours varying the length and the 't Hooft coupling, $λ$. For instance, we will show that the large $L$ (asymptotic) expansion is exactly reproduced by its analogue in the BDS Bethe Ansatz, though the exact expression clearly differs from the BDS one (by non-analytic terms). Performing the limits on $L$ and $λ$ in different orders is also under strict control. Eventually, the precision of numerical integration of the NLIEs is as much impressive as in other easier-looking theories.
description: On the 75-th Anniversary of Bethe Ansatz, 37 Pages, Latex file
title: Too transparent for signalling? A global analysis of bond issues by property companies
Creators: name: Berninger, Marc
name: Bossong, Paul
name: Schiereck, Dirk
name: Steinhardt, Marcel
Publisher: name: Wiley-Blackwell
Year: 2024

description: Bond issues often result in negative revaluations of the market value of equity. These market reactions are usually explained by negative signals and asymmetric information about the use of the proceeds. In industries with rather transparent investment opportunities these arguments are not applicable and we expect to find no negative revaluations. Consequently, analysing the stock price reactions to 2299 bond issues by real estate companies between 1996 and 2019, we observe none to positive reactions on the announcement of an upcoming bond issue. The findings underpin the necessity for controlling of industry effects in empirical studies on capital structure decisions.
Estimation of the covariance matrix of random effects in longitudinal studies
Creators: name: Sun, Yan
name: Zhang, Wenyang
name: Tong, Howell
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G05 (Primary) 62G08, 62G20 (Secondary)

description: Longitudinal studies are often conducted to explore the cohort and age effects in many scientific areas. The within cluster correlation structure plays a very important role in longitudinal data analysis. This is because not only can an estimator be improved by incorporating the within cluster correlation structure into the estimation procedure, but also the within cluster correlation structure can sometimes provide valuable insights in practical problems. For example, it can reveal the correlation strengths among the impacts of various factors. Motivated by data typified by a set from Bangladesh pertinent to the use of contraceptives, we propose a random effect varying-coefficient model, and an estimation procedure for the within cluster correlation structure of the proposed model. The estimation procedure is optimization-free and the proposed estimators enjoy asymptotic normality under mild conditions. Simulations suggest that the proposed estimation is practicable for finite samples and resistent against mild forms of model misspecification. Finally, we analyze the data mentioned above with the new random effect varying-coefficient model together with the proposed estimation procedure, which reveals some interesting sociological dynamics.
description: Published in at http://dx.doi.org/10.1214/009053607000000523 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Η παρεμβατικότητα στις σύγχρονες διεθνείς σχέσεις: το ηθικό καθήκον και η αδικαιολόγητη βία:
Creators: name: Περπερίδου, Ελπίδα Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: χρήση βίας
ανθρωπιστική παρέμβαση
Καντ
use of force
humanitarian intervention
Kant

description: Σκοπός της παρούσας ήταν η προσέγγιση της διεθνούς βίας ως παρεμβατικότητας και της διεθνούς παρεμβατικότητας ως βίας. Εξετάσαμε δηλαδή πότε οι πράξεις βίας στο εσωτερικό ενός κράτους «ταρακουνούν» την ηθική συνείδηση της ανθρωπότητας, οπότε παύουν να αποτελούν αποκλειστικά δική του υπόθεση και επισύρουν την προσοχή άλλων κρατών ή συλλογικών οργάνων της διεθνούς κοινότητας και, αντιστρόφως, πότε η ανάμιξη κάποιου υποκειμένου του διεθνούς δικαίου στα εσωτερικά ενός κράτους συνιστά αδικαιολόγητη παραβίαση της κυριαρχικότητάς του. Δώσαμε ιδιαίτερη έμφαση στο ζήτημα της «ανθρωπιστικής επέμβασης» και αφού την αντιδιαστείλαμε από την έννοια της «παρέμβασης», επιχειρήσαμε την ιστορική επισκόπηση και νομική θεμελίωση αυτής. Τέλος, επιχειρήθηκε η παρουσίαση και ανάλυση ηθικών πτυχών του ζητήματος της διεθνούς παρέμβασης, άλλοτε ως ηθικού καθήκοντος και άλλοτε ως βίας, μέσα από τις θέσεις δύο μεγάλων στοχαστών της νεωτερικότητας (Ιμμ. Καντ και Τζ. Στ. Μιλ) και άλλων δύο της μετανεωτερικότητας (Μ. Γουόλτσερ και Τσ. Μπέιτζ).
description: The aim of the present diploma thesis was the approach of international violence as interventionism and of international interventionism as violence. We thus examined whether acts of violence taking place within one state’s territory “shake” the moral conscience of humanity and so they cease to consist an internal matter and draw the attention of other states or other subjects of international law. Conversely, we examined whether interference in the internal affairs of another state entails unjustifiable violation of its territoriality. We emphasized on the issue of “humanitarian military intervention” (after having differentiated its meaning from “humanitarian intervention” which precludes non-military forms of intervention) and we examined its history and its legal grounds. Finally, we attempted to present and analyze moral facets of international intervention, sometimes viewed as a moral obligation and sometimes as violence, through the philosophy of two great thinkers of modernity (Kant and Mill) and two great thinkers of post-modernity (M.Walzer and Ch. Beitz).
Connectivity measures for signaling pathway topologies
Creators: name: Franzese, Nicholas
name: Groce, Adam
name: T. M. Murali
name: Ritz, Anna
Publisher: name: F1000 Research Limited
Year: 2019

description: We revisit a fundamental question in signaling pathway analysis: are two molecules "connected" in a network? We examined this question for the Reactome pathway database using four different pathway representations: graphs, compound graphs, bipartite graphs, and hypergraphs (which capture many-to-many relationships in reaction networks). Reactome is well connected as a graph and poorly connected as a hypergraph, with the other representations falling between these two extremes. We present a novel relaxation of hypergraph connectivity, B-relaxation Distance, that iteratively increases connectivity from a node while preserving the hypergraph topology. B-relaxation Distance bridges bipartite graph connectivity and hypergraph connectivity, and we use it to systematically identify the influence of one Reactome pathway on another. We also assess the quality of evidence channels in the STRING database by using connectivity measures to determine the set of positive interactions. We show that while many STRING channels include interactions where both proteins participate in the same Reactome pathway, the channels are enriched for the more restrictive set of interactions where nodes are connected according to hypergraph definitions. Our method presents a systematic approach for working with more accurate pathway topologies, and lays the groundwork for other generalizations of graph-theoretic concepts to hypergraphs.
Characteristics of the open star cluster Kronberger 60 using Gaia DR2
Creators: name: Tadross, A. L.
name: Hendy, Y. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The estimation of the main parameters of star clusters is a very important target in astrophysical studies. Many of the open clusters listed in known catalogs have insuffcient astrometric parameters. Improving the observations and analysis methods proved that some of them are not true clusters. The most important aspect of using the Gaia survey lies in the positions, parallax, and proper motions for the cluster stars with the homogeneous photometry, which makes the membership candidates precisely determined. In this respect, several photometric parameters of the open star cluster Kronberger 60 have been estimated. On studying the radial density profile, the radius is found to be 10.0+/-0.5 arcmin. It is located at a distance of 1935+/-90 pc, with an age of 800+/-50 Myr. Also, the reddening, the luminosity; mass functions, and the total mass of the cluster have been estimated as well. Our study is showing a dynamical relaxation behavior of Kronberger 60.
description: 18 pages, 6 figures
Japanese students’ perceptions of their student role at an international college
Creators: name: Jacquest, Marni Anne
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to gain some understanding as to how Japanese post-secondary students, studying in North America, perceived their student role and the implications of this perception for conflict over various aspects of student role between teachers and students in a college setting in British Columbia. Although much has been written about the student role of Japanese post-secondary students in Japan, there is virtually no literature which documents what happens to perceptions of student role when Japanese students come to colleges or universities in North America. Ten aspects of student role were identified from reports of student-teacher conflict and used as the main focus of a questionnaire given to 69 students at Canadian International College (C.I.C.) in the first and last years of their four-year program at the college. Fourth-year students were also interviewed in groups about their perceptions of student role at C.I.C. Results from the first-year student interviews and the first- and fourth-year student questionnaires showed that such behaviors as: asking questions, volunteering answers, stating opinions, and active involvement in class were those to which students had the hardest time adjusting. In general, students reported a large difference between student role at Japanese post-secondary institutions and at C.I.C. with moderate problems at C.I.C. as a result of that difference. They also reported a high level of student compliance with the ten aspects of student role in the questionnaire even though their perceptions of student role were different from that of C.I.C. The study raised the question of a turning point in the acquisition of Canadian academic values, at which students seem to internalize Canadian expectations of student role which were initially difficult to accept. It also suggested that international colleges such as C.I.C. have expectations of student role that are neither fully Canadian nor fully Japanese. The study recommended that North-American teachers of Japanese students find effective ways to orient students to new student role expectations and allow them to comply without jeopardizing their identity with their fellow students.
The B -- TAU FCNC connection in SUSY Unified Theories
Creators: name: Masiero, A.
name: Paradisi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of SUSY grand unification a link is established between the hadronic and leptonic soft breaking sectors. Such relation is here exploited in particular for FCNC processes in B physics. It is shown how bounds on leptonic FCNC involving the third generation translate into constraints on FC B decays. In the second part of the contribution we show that tests of lepton universality in K and B decays can represent an interesting handle to obtain relevant information on the amount of FCNC in the second and third fermion generation.
description: 9 pages, 4 figures. Based on talks given at: DIF06, International Workshop on discoveries in flavour physics at e+e- colloders, Laboratori Nazionali di Frascati (Italy), February 28- March 03, 2006; XLIst Rencontres de Moriond, La Thuile, 5-11 March 2006; CORFU2005, Corfu Summer Institute on EPP, Corfu, Greece, September 4-26, 2005
Η διαμόρφωση του πεδίου της διαδικτυακής δημοσιογραφίας στην Ελλάδα:
Creators: name: Σιούντα, Βάια Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: διαδικτυακή δημοσιογραφία
όμιλοι Μ.Μ.Ε
οικονομική συγκέντρωση
online journalism
media organizations
media concentration

description: Η παρούσα εργασία εξετάζει τη μετάβαση των παραδοσιακών μέσων στο νέο ψηφιακό περιβάλλον και καταγράφει τις πρακτικές που τη συνοδεύουν. Επίσης διερευνά την είσοδο και τη δυναμική των νέων παικτών στο πεδίο κι αποτυπώνει τις οικονομικές στρατηγικές των μιντιακών οργανισμών, κατά τις διαδικασίες παραγωγής, διανομής και κατανάλωσης των πληροφοριών. Με αφετηρία την παραδοχή ότι οι τεχνολογικές εξελίξεις και η ευρύτερη απορρύθμιση στο χώρο των μέσων ενημέρωσης έχουν σημαντικό αντίκτυπο στη φύση και το χαρακτήρα της δημοσιογραφίας, η εργασία στοχεύει να αναδείξει τις αλλαγές που συντελούνται στον πυρήνα της, οι οποίες επηρεάζουν καθοριστικά τόσο τη δημοσιογραφική εργασία, όσο και τη διαμόρφωση του ειδησεογραφικού περιεχομένου. Μέσα από τη βιβλιογραφική ανασκόπηση και την εμπειρική έρευνα που ακολουθεί, συντελείται η χαρτογράφηση του εγχώριου διαδικτυακού τοπίου και εξάγονται κρίσιμα συμπεράσματα για το παρόν και το μέλλον της δημοσιογραφίας.
description: The present thesis examines the transition of traditional media to the new digital environment and records the practices that accompany it. It explores the entry and the dynamics of pure players in the journalistic field. Furthermore, it reflects the economic strategies of media organizations during the process of production, distribution and consumption of information. Technological developments and deregulation in the media industry have a great impact on the nature and character of journalism. This thesis aims to highlight the changes that occur in the core of journalism, which decisively affect both the journalistic work and the shaping of the news. Through the literature review and the empirical research that follows, the new Greek media landscape is mapped for the first time; future perspectives are outlined and important conclusions are extracted.
Διερεύνηση του ρόλου των εκπαιδευτικών, σχετικά με την ανάπτυξη της διγλωσσίας και της διπολιτισμικής ταυτότητας των μουσουλμάνων μαθητών-τριων που φοιτούν σε δημόσιο σχολείο.:
Creators: name: Κοβανίδου, Ελευθερία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ρόλος εκπαιδευτικών
Διγλωσσία και διπολιτισμική ταυτότητα
Μουσουλμάνοι μαθητές
Role of educators
Bilingualism and bicultural identity
Muslim students

description: H παρούσα εργασία είναι διαρθρωμένη σε δύο μέρη: στο πρώτο μέρος- Θεωρητικό, στο οποίο υπάρχουν βιβλιογραφικές αναφορές και αναπτύσσονται θεωρητικά ζητήματα που σχετίζονται με τη μουσουλμανική μειονότητα, καθώς και θέματα γλώσσας, διγλωσσίας, δίγλωσσης εκπαίδευσης και διαμόρφωσης ταυτοτήτων, και στο δεύτερο μέρος- Ερευνητικό, στο πλαίσιο του οποίου πραγματοποιήθηκε μικρής εμβέλειας εμπειρική έρευνα με στόχο να αποκαλύψει τον βαθμό που το σχολείο - μέσω των εκπαιδευτικών-τριων που αποτελούν τους διεκπεραιωτές της επίσημης εκπαιδευτικής πολιτικής και έχουν τη δύναμη να μεταδίδουν γλωσσικά και πολιτισμικά πρότυπα - συμβάλλει ή όχι στην ανάπτυξη της διγλωσσίας και της διπολιτισμικής ταυτότητας των μουσουλμάνων μαθητών, οι οποίες αποτελούν εξάλλου βασικές αρχές της διαπολιτισμικής εκπαίδευσης. Πρόκειται για μια ποιοτική έρευνα, με εργαλείο συλλογής δεδομένων τη συνέντευξη. Δείγμα της έρευνας αποτέλεσαν δέκα εκπαιδευτικοί (πέντε άντρες και πέντε γυναίκες) και δέκα μαθητές-τριες (μουσουλμάνοι-ες και χριστιανούς-ες, έξι κορίτσια και τέσσερα αγόρια) που διδάσκουν και φοιτούν αντίστοιχα στο 11ο δημοτικό σχολείο Ξάνθης. Το υλικό που συγκεντρώθηκε από τις συνεντεύξεις αναλύθηκε με τη μέθοδο ανάλυσης περιεχομένου.
description: This work is structured in two parts: the first part- Theory, in which there are references and developed theoretical issues related to the muslim minority and language issues, bilingualism, bilingual education and identity formation, and in the Second part-research, in which held short-range empirical research aimed to reveal the extent to which the school - through the educational processors which are the expressive of official educational policy and have the power to convey linguistic and cultural patterns - helps or not the development of bilingualism and bicultural identity of muslim pupils, which are also basic principles of intercultural education. This is a qualitative research, with data collection tool the interview. Sample consisted of ten teachers (five men and five women) and ten students (muslims and christians, six girls and four boys) who teach and study respectively at the 11th Primary School of Xanthi. The material collected from the interviews which were analyzed by the method of content analysis.
Libra: a package for transformation of differential systems for multiloop integrals
Creators: name: Lee, Roman N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new package for Mathematica system, called Libra. Its purpose is to provide convenient tools for the transformation of the first-order differential systems $\partial_i \boldsymbol j = M_i \boldsymbol j$ for one or several variables. In particular, Libra is designed for the reduction to $ε$-form of the differential systems which appear in multiloop calculations. The package also contains some tools for the construction of general solution: both via perturbative expansion of path-ordered exponent and via generalized power series expansion near regular singular points.Libra also has tools to determine the minimal list of coefficients in the asymptotics of the original master integrals, sufficient for fixing the boundary conditions.
description: 32 pages
Ο Schopenhauer και η μουσική:
Creators: name: Σπίντιου, Χρυσάνθη Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: subject: Σοπενχάουερ
subject: Μουσική
subject: Φιλοσοφία
subject: Schopenhauer
subject: Music
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: Σκοπός της παρούσας διατριβής ήταν η μελέτη της φιλοσοφικής θεωρίας του Σοπενχάουερ για τη μουσική. Στην εισαγωγή εξετάσαμε τη ζωή και το έργο του φιλοσόφου, τη θεωρία του για τη Βούληση και τη φιλοσοφία του για την τέχνη και την αισθητική. Στη συνέχεια, εστιάσαμε στο ρόλο που παίζει η ιδιοφυία στην παραγωγή των ποικίλων μορφών τέχνης,αναλύοντας διεξοδικά τον ρόλο και την αξία της μουσικής, την οποία ο Σοπενχάουερ τοποθετεί στην υψηλότερη κορυφή της αισθητικής του θεωρίας.Επίσης, αναφερθήκαμε στην αντιστοιχία μουσικής και σύμπαντος, καθώς και στις αναλογίες που υπάρχουν ανάμεσα στις ιδέες και τη μουσική. Ένα άλλο θέμα που εξετάσαμε ήταν η θέση του Σοπενχάουερ όσον αφορά το μουσικό είδος της Όπερας, ενώ παράλληλα δώσαμε ιδιαίτερη προσοχή στη σχέση μουσικής και φιλοσοφίας. Τέλος, παραθέσαμε την κριτική που ασκήθηκε στη θεωρία του περί μουσικής, παρουσιάζοντας την επιρροή που άσκησε η φιλοσοφία του στην αισθητική της τέχνης.
description: The aim of the present thesiswas the study of Schopenhauer’s philosophical theory on music. In the introduction we examined the life and the work of the philosopher, his theory on “Will” and his philosophy about art and aesthetics. Then, we focused on the role of the genius in the production of various forms of art, thoroughly analyzing the role and the value of music, which Schopenhauer positionsinthe highest ranks of his aesthetic theory.In addition, we mentioned the connection between music and the universe, as well as the proportions that exist between ideas and music.Another issue we examined was Schopenhauer’s position on the musical genre of Opera, while, at the same time, we paid attention to the relation between music and philosophy. Finally, we presented the criticism he received on his music theory, displaying the influence of his philosophy in aesthetics of art.
Σχεδίαση επίπεδων στοιχειοκεραιών με χρήση εξελικτικών αλγόριθμων:
Creators: name: Πατακάκης, Κωνσταντίνος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: στοιχειοκεραίες
εξελικτικοί
βελτιστοποίηση
antenna arrays
evolutionary
optimization

description: Η παρούσα διπλωματική εργασία σχετίζεται με την σχεδίαση επίπεδων στοιχειοκεραιών και την ελαχιστοποίηση των δευτερευόντων λοβών ακτινοβολίας με την χρήση εξελικτικών αλγόριθμων. Αρχικά στην εργασία γίνεται μία ιστορική αναδρομή των ασύρματων συστημάτων και ακολουθούν τέσσερα μέρη. Στο πρώτο μέρος γίνεται μία θεωρητική εισαγωγή σε βασικές έννοιες των στοιχειοκεραιών με αναλυτική περιγραφή της γραμμικής και της επίπεδης στοιχειοκεραίας. Στο δεύτερο μέρος περιγράφονται οι εξελικτικοί αλγόριθμοι ως μία αφηρημένη κατηγορία αλγόριθμων και παρουσιάζεται η λειτουργία πέντε από αυτούς. Στο τρίτο μέρος παρατίθεται το πρόβλημα όπως επίσης και οι δύο προσεγγίσεις που ακολουθήσαμε για την βελτιστοποίηση του. Στο τέταρτο και τελευταίο μέρος ακολούθησαν τα αποτελέσματα για την σχεδίαση μίας επίπεδης στοιχειοκεραίας 32 επί 24 στοιχείων και για τις δύο προσεγγίσεις.
description: This thesis is related to the design of planar arrays and the minimization of side lobe level of the radiation pattern using evolutionary algorithms. The paper begins with a historical overview of wireless systems and contains four parts. The first part is a theoretical introduction to basic concepts of antenna arrays with a detailed description of the linear and planar antenna array. The second part describes the evolutionary algorithms as an abstract class of algorithms and presents five of them. The third part shows the problem as well as the two approaches followed for optimization. In the fourth and final part are presented the results of designing a planar antenna array of 32 over 24 elements for both approaches.
Η συμπεριφορά καταναλωτών ως προς το κρασί στην πόλη Ξάνθη:
Creators: name: Μπαζιάνα, Σωτηρία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Καταναλωτής
Κρασί
Ξάνθη
Consumer
Wine
Xanthi

description: Στα πλαίσια του μεταπτυχιακού προγράμματος της Αγροτικής Οικονομίας της Σχολής Γεωπονίας, Δασολογίας και Φυσικού Περιβάλλοντος του Α.Π.Θ., εκπονήθηκε η παρούσα διατριβή. Λόγω του επίκαιρου θέματος της κατανάλωσης κρασιού απο νέους σε ηλικία καταναλωτές, και κατόπιν εκτενούς βιβλιογραφικής ανασκόπησης στο πεδίο της συμπεριφοράς, κύριος στόχος της παρούσας διατριβής ήταν η διερεύνηση της συμπεριφοράς των καταναλωτών ως προς το κρασί. Ειδικότερα, η βιβλιογραφική ανασκόπηση έδωσε την κατεύθυνση τόσο για τους στόχους όσο και για τη μεθοδολογία που ακολουθήθηκε. Ακόμη, έγινε αναφορά στην ιστορία του κρασιού στην Ελλάδα, στις ποικιλίες του οίνου, στο βιολογικό κρασί και στην ισχύουσα κατάσταση στον οινικό τομέα. Η μεθοδολογία που χρησιμοποιήθηκε ήταν απλή τυχαία δειγματοληψία και οι περαιτέρω αναλύσεις των δηλώσεων, που προέκυψαν από την διαδικασία συμπλήρωσης των ερωτηματολογίων, έγιναν με τη χρήση μη παραμετρικών ελέγχων. Τα αποτελέσματα της παρούσας διατριβής συμβάλλουν στο πεδίο της διερεύνησης της συμπεριφοράς του καταναλωτή, τόσο για τη διεύρυνση υπάρχουσων ερευνών όσο και για ενδεχόμενες μελλοντικές μελέτες.
description: Within the framework of the master program of the Agricultural Economy studies of the Aristotle University of Thessaloniki, a thesis was prepared. The analyzed subject was the behavior of the consumers towards wine, due to the issue of wine consumption of mainly young consumers in addition to extended reference review. Μany researches were studied for further reference support since they all concluded to the final result by giving directions and ideas. After that comes a reference to the history of the Greek wine as well as organic wine, different wine varieties and a state presentation. The methodology contained simple random sampling and further analysis of the results provided by the answers of the questionnaire that was performed with non parametric tests. The results consist an extra part in the field of consumer behavior, for already existing researches, as well as for researches that will take place in the future.
A Molecular Dynamics Investigation of Mechanical Properties of Graphene Reinforced Iron Composite and The Effect of Vacancy Defect Distance from the Matrix-Fiber Interface
Creators: name: Ishraaq, Raashiq
name: Rashid, Mahmudur
name: Afsar, A. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene is a material of excellent mechanical properties, which make it an ideal fiber for reinforcing metal. Since iron is the most used metal in the world, reinforcing iron with graphene can reduce the overall requirement of material in any application where strength is demanded. However, the effect of graphene reinforcement on the mechanical properties of iron needs to be known before the industrial application of the composite. In this paper, we have investigated the mechanical properties of graphene-reinforced iron composite by Molecular Dynamics (MD) method for various conditions. The properties were investigated by applying uniaxial tension on a modeled representative volume element (RVE). The effect of temperature on the mechanical property of the composite was also studied because the knowledge is required for manufacturing products with the composite operating at a wide temperature range. MD analysis also revealed that the initiation of fracture is from the matrix-fiber interface. We also investigated how the distance of vacancy defects from the matrix-fiber interface affects the mechanical properties of the composite, which can be used to select a suitable manufacturing process. The results obtained from this study show that vacancy defects lower the strength at a greater extent as it gets closer to the interface.
description: The following article has been accepted by American Institute of Physics (AIP). After it is published, it will be found at https://aip.scitation.org/journal/apc
Unified model for network dynamics exhibiting nonextensive statistics
Creators: name: Thurner, Stefan
name: Kyriakopoulos, Fragiskos
name: Tsallis, Constantino
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce a dynamical network model which unifies a number of network families which are individually known to exhibit $q$-exponential degree distributions. The present model dynamics incorporates static (non-growing) self-organizing networks, preferentially growing networks, and (preferentially) rewiring networks. Further, it exhibits a natural random graph limit. The proposed model generalizes network dynamics to rewiring and growth modes which depend on internal topology as well as on a metric imposed by the space they are embedded in. In all of the networks emerging from the presented model we find q-exponential degree distributions over a large parameter space. We comment on the parameter dependence of the corresponding entropic index q for the degree distributions, and on the behavior of the clustering coefficients and neighboring connectivity distributions.
description: 11 pages 8 figs