cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Αξιολόγηση ασφάλειας με τη χρήση ελέγχου διείσδυσης
Creators: name: Δηλάρης, Φώτιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αξιολόγηση ασφάλειας
Έλεγχος διείσδυσης
Διαδίκτυο
Security assessment
Penetration testing
Web

description: Η διαδικασία αξιολόγησης της ασφάλειας ενός λογισμικού αποτελεί ένα από τα πλέον σημαντικά στάδια της ανάπτυξής του. Στόχος της διαδικασίας αυτής είναι να εξασφαλίσει ότι οι λειτουργίες του λογισμικού είναι ανθεκτικές εναντίων επιθέσεων και ότι τα δεδομένα που διαχειρίζεται το λογισμικό προστατεύονται. Στη συγκεκριμένη εργασία γίνεται μελέτη σχετικά με την τεχνική του Penetration Testing, η οποία αποτελεί έναν από τους πλέον αποτελεσματικούς τρόπους αξιολόγησης της ασφάλειας ενός λογισμικού σήμερα. Η εργασία χωρίζεται σε ένα θεωρητικό και ένα πρακτικό τμήμα. Αρχικά, στο θεωρητικό τμήμα γίνεται μια αναφορά σε ορισμένα ιστορικά στοιχεία γύρω από το Penetration Testing, ενώ στη συνέχεια ορίζεται η έννοια του Penetration Testing σύμφωνα με την σχετική βιβλιογραφία. Επιπλέον, γίνεται μελέτη σχετικά με τα είδη, τις φάσεις και τις μεθοδολογίες του Penetration Testing. Η εργασία συνεχίζει με την μελέτη της διαδικασίας του Penetration Testing για εφαρμογές του Διαδικτύου. Στο σημείο αυτό αναφέρονται ορισμένα βασικά στοιχεία για την λειτουργία των εφαρμογών του Διαδικτύου, γίνεται καταγραφή ορισμένων ευπαθειών των εφαρμογών αυτών, ενώ στη συνέχεια γίνεται μελέτη γύρω από τα εργαλεία που χρησιμοποιούνται. Στο πρακτικό τμήμα της εργασίας, γίνεται η ανάλυση μιας ευπάθειας της δημοφιλούς CMS διαδικτυακής εφαρμογής Wordpress και στη συνέχεια γίνεται η καταγραφή ενός ρεαλιστικού σεναρίου επίθεσης, το οποίο εκμεταλλεύεται την ευπάθεια αυτή
description: The process of assessing software security is one of the most important stages of its development. The purpose of security assessment is to ensure that software functions are robust against attacks and that the data being managed by the software is protected.In this thesis is being studied the technique of Penetration Testing, which is one of the most effective ways to evaluate the security of a software today. The thesis is divided into a theoretical and practical part. Initially, in the theoretical part there is a reference to some historical facts about Penetration Testing, and then the Penetration Testing concept is defined according to the relevant literature. In addition, the Penetration Testing types, phases and methodologies are studied. The thesis continues with the study of the Penetration Testing process for web applications. At this point are some basic elements for the operation of web applications, some vulnerabilities of these applications are mentioned, and then a study is made about the tools used in the process of Penetration Testing. In the practical part of the thesis, we analyze a vulnerability of the popular Wordpress CMS web application and then a realistic attack scenario takes place, which exploits this vulnerability
HATS-34b and HATS-46b: Re-characterisation Using TESS and Gaia
Creators: name: Louden, Emma M. C.
name: Hartman, Joel D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a revised characterisation of the previously discovered transiting planet systems HATS-34 and HATS-46. We make use of the newly available space-based light curves from the NASA TESS mission and high-precision parallax and absolute photometry measurements from the ESA Gaia mission to determine the mass and radius of the planets and host stars with dramatically increased precision and accuracy compared to published values, with the uncertainties in some parameters reduced by as much as a factor of seven. Using an isochrone based fit, for HATS-34 we measure a revised host star mass and radius of $0.952_{-0.02}^{+0.04}M_S$ and of $0.9381\pm0.0080R_S$, respectively, and a revised mass and radius for the transiting planet of $0.951\pm0.050 M_J$ and $1.282 \pm0.064 R_J$ respectively. Similarly, for HATS-46 we measure a revised mass and radius for the host star of $0.869\pm0.023M_S$, and $0.894\pm0.010 R_S$, respectively, and a revised mass and radius for the planet of $0.158 \pm0.042 M_J$, and $0.951 \pm 0.029 R_J$, respectively. The uncertainties that we determine on the stellar and planetary masses and radii are also substantially lower than re-determinations that incorporate the Gaia results without performing a full re-analysis of the light curves and other observational data. We argue that, in light of Gaia and TESS, a full re-analysis of previously discovered transiting planets is warranted.
Non-trivial solutions to a linear equation in integers
Creators: name: Bukh, Boris
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11D04, 11D45, 11P99

description: For k>=3 let A \subset [1,N] be a set not containing a solution to a_1 x_1+...+a_k x_k=a_1 x_{k+1}+...+a_k x_{2k} in distinct integers. We prove that there is an epsilon>0 depending on the coefficients of the equation such that every such A has O(N^{1/2-epsilon}) elements. This answers a question of I. Ruzsa.
description: 5 pages, typos corrected, stronger result given
How many ebits can be unlocked with one classical bit?
Creators: name: Gour, Gilad
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We find an upper bound on the rate at which entanglement can be unlocked by classical bits. In particular, we show that for quantum information sources that are specified by ensambles of pure bipartite states, one classical bit can unlock at most one ebit.
description: 3 pages, Brief Report, Comments are Welcome
Secular resonance of inner test particles in hierarchical planetary systems
Creators: name: Lei, Hanlun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The present work studies the secular resonance associated with the critical argument $σ= \varpi$ ($\varpi$ is the longitude of pericentre) for inner test particles moving in low-eccentricity region with inclination $i$ smaller than $39^{\circ}$. To formulate the dynamical model, the double-averaged Hamiltonian is formulated up to an arbitrary order in the semimajor axis ratio, and then those high-order periodic terms are removed from the double-averaged Hamiltonian by means of Hori--Deprit transformation technique. The resulting Hamiltonian determines a resonant model with a single degree of freedom. Based on the resonant model, it becomes possible to explore the phase-space structure, resonant centre, and resonant width in an analytical manner. In particular, an excellent correspondence is found between the resonant width in terms of the eccentricity variation and the maximum variation of eccentricity ($Δe$) for test particles initially placed on quasi-circular orbits. It means that the secular dynamics in the low-eccentricity space with $i < 39^{\circ}$ is dominantly governed by the secular resonance associated with $σ= \varpi$.
description: 11 pages, 7 figures. Accepted for publication in MNRAS
Data Beyond Vision
Creators: name: Koeser, Rebecca Sutton
name: Budak, Nick
name: Doroudian, Gissoo
name: Li, Xinyi
Publisher: name: Zenodo
Year: 2019
Subjects: data physicalization
digital humanities

description: Data visualization is frequently used in Digital Humanities for exploration, analysis, making an argument, or grappling with large-scale data. Increasing access to off-the-shelf data visualization tools is beneficial to the field, but it can lead to homogenized visualizations. Data physicalization has potential to defamiliarize and refresh the insight that data visualizations initially brought to DH. Proliferation in 3D modeling software and relatively affordable 3D printing technology makes iterative, computer-generated data physicalization more feasible. Working in three dimensions gives additional affordances: parallel data series can be seen next to each other, rather than color-coded, overlapped, or staggered; and physical objects can be viewed from multiple angles, allowing for changing perspective. This project explores new ways of engaging with a dataset and the arguments and narratives behind it, in order to challenge the dominant paradigms of conventional screen-based data visualization. The project currently comprises: 3D printing a model of library member activity over time from the Shakespeare and Company Project juxtaposing documented activities from two sets of archival materials Folding paper forms of borrowing activity from the Shakespeare and Company Project surfacing the activity of women and and non-famous members Weaving representing intertextuality based on references in Jacques Derrida’s de la Grammatologie from Derrida’s Margins The project was exhibited as a poster at DH2019 Utrecht and as an installation at ACH2019 Pittsburgh.
Rodeo: Sparse, greedy nonparametric regression
Creators: name: Lafferty, John
name: Wasserman, Larry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G08 (Primary); 62G20 (Secondary)

description: We present a greedy method for simultaneously performing local bandwidth selection and variable selection in nonparametric regression. The method starts with a local linear estimator with large bandwidths, and incrementally decreases the bandwidth of variables for which the gradient of the estimator with respect to bandwidth is large. The method--called rodeo (regularization of derivative expectation operator)--conducts a sequence of hypothesis tests to threshold derivatives, and is easy to implement. Under certain assumptions on the regression function and sampling density, it is shown that the rodeo applied to local linear smoothing avoids the curse of dimensionality, achieving near optimal minimax rates of convergence in the number of relevant variables, as if these variables were isolated in advance.
description: Published in at http://dx.doi.org/10.1214/009053607000000811 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Akutagawa Ryunosuke : three themes
Creators: name: Iles, Timothy J.F.
Publisher: name: University of British Columbia
Year: 2008

description: The aim of this study is to examine the workings of three themes within the fiction of Akutagawa Ryunosuke(1892-1927), to explore how these themes interrelate to forma portrait of their author's alienation from the world and from himself. These are: nature's hostility to the artist and his efforts to combat that; woman and her association with nature, disease, and death; and the Double as a mockery of the authored self by the authoring self. Each theme is discussed in a separate chapter; a concluding chapter explores the way in which the three themes merge in one specific short story, "Haguruma" (1927; tr. Cogwheel, 1965).
Analysis of light-induced frequency shifts in the photoassociation of ultracold metastable helium atoms
Creators: name: Portier, Maximilien
name: Moal, Steven
name: Kim, Jaewan
name: Leduc, Michèle
name: Cohen-Tannoudji, Claude
name: Dulieu, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present an exhaustive analysis of the light-induced frequency shifts of the photoassociation lines of ultracold metastable 4He* atoms in a magnetic trap. The measurements of the shifts of several vibrational levels bound in the purely long-range J=1,0u+ potential linked to the 23S1-23P0 asymptote were reported in a previous paper and are analyzed here. The simplicity of this system makes it very appropriate for a detailed study. Indeed, the purely long-range character of the excited potential allows one to calculate exact excited molecular wavefunctions and to use asymptotic expansions at large internuclear distances of the ground state wavefunctions appearing in Franck-Condon type integrals. Moreover, the number of collisional channels to be considered is strongly reduced by the absence of hyperfine structure for 4He* and the use of polarized ultracold atoms and polarized light. This allows us to derive semi-analytical expressions for the shifts showing explicitly their linear dependences on the s-wave scattering length a of spin polarized metastable 4He* atoms. This explains how it is possible to derive the measurement of a from these shifts.
description: 28 pages, 7 figures, submitted to the special issue on Cold Molecules of J. Phys. B
Multi-spacecraft Study of the Solar Wind at Solar Minimum: Dependence on Latitude and Transient Outflows
Creators: name: Laker, R.
name: Horbury, T. S.
name: Bale, S. D.
name: Matteini, L.
name: Woolley, T.
name: Woodham, L. D.
name: Stawarz, J. E.
name: Davies, E. E.
name: Eastwood, J. P.
name: Owens, M. J.
name: O'Brien, H.
name: Evans, V.
name: Angelini, V.
name: Richter, I.
name: Heyner, D.
name: Owen, C. J.
name: Louarn, P.
name: Federov, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The recent launches of Parker Solar Probe (PSP), Solar Orbiter (SO) and BepiColombo, along with several older spacecraft, have provided the opportunity to study the solar wind at multiple latitudes and distances from the Sun simultaneously. We take advantage of this unique spacecraft constellation, along with low solar activity across two solar rotations between May and July 2020, to investigate how the solar wind structure, including the Heliospheric Current Sheet (HCS), varies with latitude. We visualise the sector structure of the inner heliosphere by ballistically mapping the polarity and solar wind speed from several spacecraft onto the Sun's source surface. We then assess the HCS morphology and orientation with the in situ data and compare with a predicted HCS shape. We resolve ripples in the HCS on scales of a few degrees in longitude and latitude, finding that the local orientation of sector boundaries were broadly consistent with the shape of the HCS but were steepened with respect to a modelled HCS at the Sun. We investigate how several CIRs varied with latitude, finding evidence for the compression region affecting slow solar wind outside the latitude extent of the faster stream. We also identified several transient structures associated with HCS crossings, and speculate that one such transient may have disrupted the local HCS orientation up to five days after its passage. We have shown that the solar wind structure varies significantly with latitude, with this constellation providing context for solar wind measurements that would not be possible with a single spacecraft. These measurements provide an accurate representation of the solar wind within $\pm 10^{\circ}$ latitude, which could be used as a more rigorous constraint on solar wind models and space weather predictions. In the future, this range of latitudes will increase as SO's orbit becomes more inclined.
description: Accepted version
Markov Chain Monte Carlo: Can We Trust the Third Significant Figure?
Creators: name: Flegal, James M.
name: Haran, Murali
name: Jones, Galin L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Current reporting of results based on Markov chain Monte Carlo computations could be improved. In particular, a measure of the accuracy of the resulting estimates is rarely reported. Thus we have little ability to objectively assess the quality of the reported estimates. We address this issue in that we discuss why Monte Carlo standard errors are important, how they can be easily calculated in Markov chain Monte Carlo and how they can be used to decide when to stop the simulation. We compare their use to a popular alternative in the context of two examples.
description: Published in at http://dx.doi.org/10.1214/08-STS257 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
MAIN: Multihead-Attention Imputation Networks
Creators: name: Mouselinos, Spyridon
name: Polymenakos, Kyriakos
name: Nikitakis, Antonis
name: Kyriakopoulos, Konstantinos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The problem of missing data, usually absent incurated and competition-standard datasets, is an unfortunate reality for most machine learning models used in industry applications. Recent work has focused on understanding the nature and the negative effects of such phenomena, while devising solutions for optimal imputation of the missing data, using both discriminative and generative approaches. We propose a novel mechanism based on multi-head attention which can be applied effortlessly in any model and achieves better downstream performance without the introduction of the full dataset in any part of the modeling pipeline. Our method inductively models patterns of missingness in the input data in order to increase the performance of the downstream task. Finally, after evaluating our method against baselines for a number of datasets, we found performance gains that tend to be larger in scenarios of high missingness.
description: 8 pages, 7 figures
The Origin and Motion of PSR J0538+2817 in S147
Creators: name: Ng, C. -Y.
name: Romani, Roger W.
name: Brisken, Walter F.
name: Chatterjee, Shami
name: Kramer, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on VLBA astrometry and CXO imaging of PSR J0538+2817 in the supernova remnant S147. We measure a parallax distance of $1.47^{+0.42}_{-0.27}$kpc along with a high-precision proper motion, giving a transverse velocity $V_\perp=400^{+114}_{-73}$km/s. A small extended wind nebula is detected around the pulsar; the symmetry axis of this structure suggests that the spin axis lies $12\arcdeg\pm4\arcdeg$ from the velocity vector (2-D), but the emission is too faint for robust model independent statements. The neutron star is hot, consistent with the young ~40kyr kinematic age. The pulsar progenitor is likely a runaway from a nearby cluster, with NGC 1960 (M36) a leading candidate.
description: 20 pages, 6 figures, ApJ accepted
Εγκαταλειμμένα ακίνητα και εθνικό κτηματολόγιο
Creators: name: Φλωρίνη, Δήμητρα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Εγκαταλειμμένα ακίνητα
Δημόσιο
Εθνικό Κτηματολόγιο
Abandoned properties
The State
National Land Registry Law

description: Στόχος της μεταπτυχιακής εργασίας ήταν η, μέσω έρευνας, ερμηνείας της σχετικής νομοθεσίας και ανεύρεσης σχετικής νομολογίας, κατανόηση και εμβάθυνση της έννοιας του εγκαταλειμμένου ακινήτου, αλλά και η συσχέτισή του με το Δίκαιο του Κτηματολογίου. Προς επίτευξη του ανωτέρω στόχου, στο πρώτο κεφάλαιο του θέματος συντελέστηκε μία απόπειρα ανάλυσης του όρου «εγκαταλειμμένα ακίνητα», της διαδικασίας κατάληψής τους από το Δημόσιο, καθώς και του τρόπου ένδικης προστασίας των ιδιοκτητών τους. Αναφορά, δε, γίνεται και σε ιδιαίτερες κατηγορίες εγκαταλειμμένων ακινήτων. Στο δεύτερο κεφάλαιο, με την παράθεση περιπτωσιολογίας και των σχετικών με το υπό εξέταση θέμα διατάξεων του κτηματολογικού δικαίου, επιχειρήθηκε να δοθεί απάντηση στο ερώτημα πώς και από ποιους δηλώνοντα τα εγκαταλειμμένα ακίνητα στο Εθνικό Κτηματολόγιο, καθώς και με ποιόν τρόπο μπορούν να αντιμετωπιστούν τα προβλήματα που ενδεχομένως ανακύπτουν. Τέλος, η εργασία ολοκληρώθηκε με γενικά συμπεράσματα και προτάσεις επί του φαινομένου των εν λόγω ακινήτων.
description: The aim of this postgraduate work is the -via research, interpretation of the relevant legislation and identification of the relevant case laws- comprehension and delving into the term of abandoned property and its correlation with land registry law. To accomplish the aim stated above, an attempt is made to analyze the term “abandoned properties”, the process of their taking over by the State as well as the legal protection of their owners. There is also reference to special cases of abandoned properties. In the second chapter, with the presentation of case reports and the relevant land registry law provisions, an attempt is made to answer the question of how and by whom are abandoned properties declared in the National Land Registry and the ways that possible problems might be dealt with. Finally, the dissertation is completed with general conclusions and proposals concerning the properties in question.
A massive quiescent galaxy confirmed in a protocluster at z=3.09
Creators: name: Kubo, Mariko
name: Umehata, Hideki
name: Matsuda, Yuichi
name: Kajisawa, Masaru
name: Steidel, Charles C.
name: Yamada, Toru
name: Tanaka, Ichi
name: Hatsukade, Bunyo
name: Tamura, Yoichi
name: Nakanishi, Kouichiro
name: Kohno, Kotaro
name: Lee, Chien-Feng
name: Matsuda, Keiichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report a massive quiescent galaxy at $z_{\rm spec}=3.0922^{+0.008}_{-0.004}$ spectroscopically confirmed at a protocluster in the SSA22 field by detecting the Balmer and Ca {\footnotesize II} absorption features with multi-object spectrometer for infrared exploration (MOSFIRE) on the Keck I telescope. This is the most distant quiescent galaxy confirmed in a protocluster to date. We fit the optical to mid-infrared photometry and spectrum simultaneously with spectral energy distribution (SED) models of parametric and nonparametric star formation histories (SFH). Both models fit the observed SED well and confirm that this object is a massive quiescent galaxy with the stellar mass of $\log(\rm M_{\star}/M_{\odot}) = 11.26^{+0.03}_{-0.04}$ and $11.54^{+0.03}_{-0.00}$, and star formation rate of $\rm SFR/M_{\odot}~yr^{-1} <0.3$ and $=0.01^{+0.03}_{-0.01}$ for parametric and nonparametric models, respectively. The SFH from the former modeling is described as an instantaneous starburst while that of the latter modeling is longer-lived but both models agree with a sudden quenching of the star formation at $\sim0.6$ Gyr ago. This massive quiescent galaxy is confirmed in an extremely dense group of galaxies predicted as a progenitor of a brightest cluster galaxy formed via multiple mergers in cosmological numerical simulations. We newly find three plausible [O III]$λ$5007 emitters at $3.0791\leq z_{\rm spec}\leq3.0833$ happened to be detected around the target. Two of them just between the target and its nearest massive galaxy are possible evidence of their interactions. They suggest the future strong size and stellar mass evolution of this massive quiescent galaxy via mergers.
description: 13 pages, 7 figures (in main text. 21 pages including appendices), accepted for publication in ApJ
Η ηθική θεώρηση της ευθανασίας στους Rachels και Dworkin
Creators: name: Δημητριάδου, Πολύμνια Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: ευθανασία
ιερότητα της ζωής
ιδιωτικός βίος
euthanasia
sanctity of life
private life

description: Σκοπός της μεταπτυχιακής διπλωματικής εργασίας ήταν η ηθική θεώρηση της ευθανασίας. Εξετάσαμε τις εννοιολογικές διακρίσεις της ευθανασίας, τις ηθικές αξίες που εμπλέκονται και τις διαμάχες γύρω από το συγκεκριμένο ηθικό ζήτημα. Στη συνέχεια αναδείξαμε την ανάγκη για φιλοσοφική ανάλυση της ευθανασίας διότι έχει βιωματικές, θεολογικές, ιατρικές και συνεπώς ηθικές διαστάσεις. Συγκεκριμένα, αναλύσαμε τη φιλοσοφική προβληματική δυο φιλοσόφων πάνω στη πρακτική της ευθανασίας, του J. Rachels και του R. Dworkin. Αναφερθήκαμε αναλυτικά στην επιχειρηματολογία των δυο φιλοσόφων και μας απασχόλησε η συγκριτική εξέταση τους. Τέλος, ασχοληθήκαμε με την κριτική αποτίμηση της επιχειρηματολογίας τους από άλλους φιλοσόφους και καταλήξαμε σε μια εμπεριστατωμένη θέση σχετικά με τον τρόπο της ηθικής αντιμετώπισης της πρακτικής της ευθανασίας ως ζητήματος και δημόσιου και ιδιωτικού βίου
description: The aim of the present thesis was the moral consideration of euthanasia. We examined the conceptual classifications of euthanasia, the moral values evolved and the disputes concerning this specific moral issue. Then we highlighted the need for philosophical analysis of euthanasia because it has experiential, theological, medical and, therefore, moral dimensions. Specifically, we analysed the philosophical reasoning of two philosophers on the practice of euthanasia, of J. Rachels and R. Dworkin. We referred in detail to the argumentation of the two philosophers and we examined them comparatively. In the end, we also examined the critical valuation of their argumentation according to other philosophers and we concluded to a circumstantial thesis about the manner of ethical confrontation of the practice of euthanasia as a matter both of state and individual
The influence of selected variables on the attitudes of Canadian adolescents towards marriage and family life
Creators: name: Cyrull, F. Jean
Publisher: name: University of British Columbia
Year: 2008

description: The purposes were to investigate the attitudes of Canadian adolescents toward marriage and family life and to determine how these are influenced by family structure, perception of family conflict, gender and age and to investigate the influence of family structure on adolescent self-esteem. Seven hundred and ninety-two students ages 13-19 in a Western Canadian high school responded to the questionnaire. Multivariate and Univariate analyses reveal that family structure and perception of family conflict have a greater influence on adolescent attitudes towards marriage and family life than age and gender. Length of time living in are married family did not appear to influence adolescent attitudes. The remarried family structure most negatively affected adolescent attitudes. Older males in the remarried family appeared to have higher self-esteem than subjects in other family structures.
Ordering dynamics with two non-excluding options: Bilingualism in language competition
Creators: name: Castelló, Xavier
name: Eguíluz, Víctor M.
name: Miguel, Maxi San
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We consider a modification of the voter model in which a set of interacting elements (agents) can be in either of two equivalent states (A or B) or in a third additional mixed AB state. The model is motivated by studies of language competition dynamics, where the AB state is associated with bilingualism. We study the ordering process and associated interface and coarsening dynamics in regular lattices and small world networks. Agents in the AB state define the interfaces, changing the interfacial noise driven coarsening of the voter model to curvature driven coarsening. We argue that this change in the coarsening mechanism is generic for perturbations of the voter model dynamics. When interaction is through a small world network the AB agents restore coarsening, eliminating the metastable states of the voter model. The time to reach the absorbing state scales with system size as $τ\sim \ln N$ to be compared with the result $τ\sim N$ for the voter model in a small world network.
description: (16 pages, 6 figures)
Системы контроля и управления АЭС. Информационная безопасность.
Creators: name: Комлев, Виктор Евгеньевич
Publisher: name: Zenodo
Year: 2019
Subjects: information security
інформаційна безпека
Cybersecurity of power systems
Кібербезпека енергетики

description: Презентація представляє організаційні заходи, програмно-технічні засоби забезпечення інформаційної безпеки, що пропогуються Северодонецьким науково-виробничим об'єднанням "Імпульс", а також проблеми гармонізації нормативної бази інформаційної безпеки
Influence of the inhomogeneous field at the tip on quantitative piezoresponse force microscopy
Creators: name: Jungk, T.
name: Hoffmann, A.
name: Soergel, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric domain imaging with piezoresponse force microscopy (PFM) relies on the converse piezoelectric effect: a voltage applied to the sample leads to mechanical deformations. In case of PFM one electrode is realized by the tip, therefore generating a strongly inhomogeneous electric field distribution inside the sample which reaches values up to $10^8 $V/m directly underneath the apex of the tip. Although often assumed, this high electric field does not lead to an enhancement of the piezoelectric deformation of the sample. On the contrary, internal clamping of the material reduces the observed deformation compared to the theoretically expected value which depends only on the voltage thus being independent of the exact field distribution.
Spin-lattice model of Magneto-electric Transitions in RbCoBr$_3$
Creators: name: Nakamura, Tota
name: Nishiwaki, Yoichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Extensive Monte Carlo simulations are performed to analyze a recent neutron diffraction experiment on a distorted triangular lattice compound RbCoBr$_3$. We consider a spin-lattice model, where both spin and lattice are Ising variables. This model explains well successive magnetic and dielectric transitions observed in the experiment. The exchange interaction parameters and the spin-lattice coupling are estimated. It is found that the spin-lattice coupling is important to explain the slow growth of a ferrimagnetic order. The present simulations were made possible by developing a new Monte Carlo algorithm, which accelerates slow Monte Carlo dynamics of quasi-one-dimensional frustrated systems.
description: 11 pages, 11 figures
Confronting Dark Energy Models with Astrophysical Data: Non-Equilibrium vs. Conventional Cosmologies
Creators: name: Ellis, J. R.
name: Mavromatos, N. E.
name: Mitsou, V. A.
name: Nanopoulos, D. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss fits of cosmological dark energy models to the available data on high-redshift supernovae. We consider a conventional model with Cold Dark Matter and a cosmological constant (LambdaCDM), a model invoking super-horizon perturbations (SHCDM) and models based on Liouville strings in which dark energy is provided by a rolling dilaton field (Q-cosmology). We show that a complete treatment of Q-cosmology requires a careful discussion of non-equilibrium situations (off-shell effects). The two main high-redshift supernova data sets give compatible constraints on LambdaCDM and the other models. We recover the well-known result that LambdaCDM fits very well the combined supernova data sets, as does the super-horizon model. We discuss the model-dependent off-shell corrections to the Q-cosmology model that are relevant to the supernova data, and show that this model fits the data equally well. This analysis could be extended to other aspects of cosmological phenomenology, in particular to the CMB and Baryon Acoustic Oscillations, which have so far been treated using on-shell models.
description: 25 pages latex, 8 eps figures, revised version to appear in Astroparticle Physics
A stochastical model for periodic domain structuring in ferroelectric crystals
Creators: name: Kalkum, Felix
name: Eggert, Helge A.
name: Jungk, Tobias
name: Buse, Karsten
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A stochastical description is applied in order to understand how ferroelectric structures can be formed. The predictions are compared with experimental data of the so-called electrical fixing: Domains are patterned in photorefractive lithium niobate crystals by the combination of light-induced space-charge fields with externally applied electrical fields. In terms of our stochastical model the probability for domain nucleation is modulated according to the sum of external and internal fields. The model describes the shape of the domain pattern as well as the effective degree of modulation.
Κινούμενα σχέδια και εικονικοί κόσμοι: σχεδίαση και ανάπτυξη εκπαιδευτικού περιεχομένου ψηφιακής αφήγησης
Creators: name: Κούτσιανου, Δήμητρα Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σχεδιοκίνηση
Ηλεκτρονικά μαθήματα
Πρόγραμμα ανάπτυξης παιχνιδιών
UNITY
e-Learning
animation

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι ο σχεδιασμός και η ανάπτυξη μιας πολυμεσικής εφαρμογής, με στόχο την δημιουργία ενός ηλεκτρονικού μαθήματος (e-learning), την ανάπτυξη και σχεδίαση εκπαιδευτικού περιεχομένου ψηφιακής αφήγησης στα Ελληνικά, για μία από τις πιο γνωστές μηχανές δημιουργίας παιχνιδιών της εταιρείας “Unity Technologies” τη “Unity” και την δημιουργία κινούμενων σχεδίων και εικονικών κόσμων σε αυτή. Παράλληλα μέρος του περιεχομένου θα ανεβεί στο “YouTube” στο κανάλι της πολυμεσικής εφαρμογής. Βασικός στόχος του ηλεκτρονικού μαθήματος (e-learning) είναι η εξοικείωση και η γνωριμία με το περιβάλλον της “Unity” και τις βασικές δυνατότητες που δίνει για τη δημιουργία “animation” με την χρήση “key frames”. Απευθύνεται κυρίως σε κοινό το οποίο δεν είναι εξοικειωμένο με την συγκεκριμένη μηχανή δημιουργίας παιχνιδιών και θέλει να ξεκινήσει από την αρχή. Μέσα από την δημιουργία ενός βασικού και απλού έργου (Project) θα εξοικειωθεί ο χρήστης με την πλατφόρμα, και θα μπορέσει στη συνέχεια να προχωρήσει στη δημιουργία των δικών του. Το υλικό θα μπορεί να αξιοποιηθεί και στο πλαίσιο μαθημάτων πολυμεσικής τεχνολογίας/παραγωγής όπως το “εργαστήριο πολυμεσικής παραγωγής” του Διαπανεπιστημιακού Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών, “Προηγμένα Συστήματα Υπολογιστών και Επικοινωνιών»
description: The subject of this dissertation is the design and development of a multimedia application, aiming to create an e-learning module, to develop and design an educational content of digital narration in Greek for one of the most commonly used platform for game developing of Unity Technologies, Unity. Additionally, a part of the content is uploaded on YouTube channel of this application. The basic aim of the e-learning module is the acquaintance and familiarization of Unity platform and its basic tools for animate with key frames. The possible participants of the module are those who are not keen on this platform for game development and they want to start from the beginning. Through the creation of a basic and simple project, the user will be familiar with this platform and, eventually, he/she will be able to continue with the development of his/her own project. The content of the module will be used at the courses of multimedia technology and production of the Interdisciplinary Postgraduate Program with title Advanced Computer and Communication Systems
description: Σε συνεργασία με το τμήμα Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Grammatical elicitation: Subject relative clauses
Creators: name: Sales, Henry
name: Scott, Tessa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Verbs include 'cut,' 'bite,' 'hit,' 'pet,' and 'eat,' elicited with human and non-human participants. For notes, see PDF pages 6-8 of related field notes.
On Bubbles of Nothing in AdS/CFT
Creators: name: He, Jianyang
name: Rozali, Moshe
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss non-perturbative instabilities, mediated by bubbles of nothing, in the context of the AdS/CFT correspondence. By exploring the phase diagram of such decays we give an interpretation of the process in terms of an effective potential in a quantum mechanics of a single variable, a winding mode condensate. The decay corresponds to a conventional first order transition, the true vacuum being a non-geometrical "nothing" state.
description: 15 pages, 7 figures, minor changes
Tilting Planets During Planet Scattering
Creators: name: Li, Gongjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observational constraints on planet spin-axis has recently become possible, and revealed a system that favors a large spin-axis misalignment, a low stellar spin-orbit misalignment and a high eccentricity. To explain the origin of such systems, we propose a mechanism that could tilt the planet spin-axis during planet-planet scattering, which are natural outcomes of in-situ formation and disk migration. Specifically, we show that spin-orbit resonances could occur for a short time period during the scattering processes, and excite the misalignment of the planet spin-axis. This typically leads to planets with large spin-misalignment and a wide range of eccentricities and inclinations.
description: 6 pages, 5 figures. Accepted for publication in ApJL
Networked partisanship and framing: a socio-semantic network analysis of the Italian debate on migration
Creators: name: Radicioni, Tommaso
name: Squartini, Tiziano
name: Pavan, Elena
name: Saracco, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Applied Physics (physics.app-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The huge amount of data made available by the massive usage of social media has opened up the unprecedented possibility to carry out a data-driven study of political processes. While particular attention has been paid to phenomena like elite and mass polarization during online debates and echo-chambers formation, the interplay between online partisanship and framing practices, jointly sustaining adversarial dynamics, still remains overlooked. With the present paper, we carry out a socio-semantic analysis of the debate about migration policies observed on the Italian Twittersphere, across the period May-November 2019. As regards the social analysis, our methodology allows us to extract relevant information about the political orientation of the communities of users - hereby called partisan communities - without resorting upon any external information. Remarkably, our community detection technique is sensitive enough to clearly highlight the dynamics characterizing the relationship among different political forces.As regards the semantic analysis, our networks of hashtags display a mesoscale structure organized in a core-periphery fashion, across the entire observation period. Taken altogether, our results point at different, yet overlapping, trajectories of conflict played out using migration issues as a backdrop. A first line opposes communities discussing substantively of migration to communities approaching this issue just to fuel hostility against political opponents; within the second line, a mechanism of distancing between partisan communities reflects shifting political alliances within the governmental coalition. Ultimately, our results contribute to shed light on the complexity of the Italian political context characterized by multiple poles of partisan alignment.
Exact tensor closures for the three dimensional Jeffery's equation
Creators: name: Montgomery-Smith, Stephen
name: He, Wei
name: Jack, David A.
name: Smith, Douglas E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper presents an exact formula for calculating the fourth-moment tensor from the second-moment tensor for the three dimensional Jeffery's equation. Although this approach falls within the category of a moment tensor closure, it does not rely upon an approximation, either analytic or curve fit, of the fourth-moment tensor as do previous closures. This closure is orthotropic in the sense of \cite{cintra:95}, or equivalently, a natural closure in the sense of \cite{verleye:93}. The existence of these explicit formulae has been asserted previously, but as far as the authors know, the explicit forms have yet to be published. The formulae involve elliptic integrals, and are valid whenever fiber orientation was isotropic at some point in time. Finally, this paper presents the Fast Exact Closure (FEC), a fast and in principle exact method for solving Jeffery's equation, which does not require approximate closures, nor the elliptic integral computation.
Additional file 12: of Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model
Creators: name: Guo, Hui
name: Wang, Tianyun
name: Wu, Huidan
name: Long, Min
name: Coe, Bradley
name: Li, Honghui
name: Xun, Guanglei
name: Ou, Jianjun
name: Chen, Biyuan
name: Duan, Guiqin
name: Bai, Ting
name: Zhao, Ningxia
name: Shen, Yidong
name: Li, Yun
name: Wang, Yazhe
name: Zhang, Yu
name: Baker, Carl
name: Liu, Yanling
name: Pang, Nan
name: Huang, Lian
name: Han, Lin
name: Jia, Xiangbin
name: Liu, Cenying
name: Ni, Hailun
name: Yang, Xinyi
name: Xia, Lu
name: Chen, Jingjing
name: Shen, Lu
name: Li, Ying
name: Zhao, Rongjuan
name: Zhao, Wenjing
name: Peng, Jing
name: Pan, Qian
name: Long, Zhigao
name: Su, Wei
name: Tan, Jieqiong
name: Du, Xiaogang
name: Ke, Xiaoyan
name: Yao, Meiling
name: Hu, Zhengmao
name: Zou, Xiaobing
name: Zhao, Jingping
name: Bernier, Raphael
name: Eichler, Evan
name: Xia, Kun
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Mental Health

description: Figure S7. Logistic regression model performed to test the relationship between affected probability and DNM numbers correcting for fatherâ s age at birth and gender. The logistic regression histogram plot shows that individuals with more DNM numbers are more likely to be affected. (PDF 879 kb)
Analysis of protein products encoded by the polyhomeotic locus, a member of the polycomb-group of genes in drosophila melanogaster
Creators: name: DeCamillis, Mark Andrew
Publisher: name: University of British Columbia
Year: 2008

description: Polyhomeotic (ph) belongs to the Polycomb-Group (PcG) of genes in Drosophila melanogaster. 12 PcG genes have so far been described, originally identified as trans-regulatory repressors of homeotic gene expression. PcG genes interact in multiple heterozygous combinations to mutually enhance gain of function homeotic phenotypes. In addition to homeotic effects, many PcG genes including ph exhibit pleiotropic phenotypes. Two models have been proposed to explain PcG interactions and function: 1) PcG genes form a hierarchical regulatory network which functions to elaborate the correct expression of a subset of members required at specific regulatory targets; 2) PcG members constitute single components of a multimeric protein complex that functions at specific regulatory targets. To further the molecular characterization of ph protein products and better understand its role in the PcG, I have produced a mono-specific polyclonal antiserum to ph proteins. Using this reagent I show that at least 4 distinct ph protein products are produced that are differentially expressed during development. Several correlations between ph phenotypes and ph protein expression are made. As expected from conceptual translation of a ph cDNA, I show that ph proteins are localized in the nucleus. Further analysis shows that ph is a chromatin binding protein that recognizes 80 specific sites on the polytene chromosome including locations of the homeotic gene complexes and several PcG genes. Comparison of ph and. Polycomb binding sites show a striking degree of overlap in which 71 of 80 ph sites are indistinguishable from Pc sites. I show that ph recognizes ectopically located bxd sequences (an upstream regulatory element in the Ubx gene of the bithorax complex) also recognized by Pc, indicating that ph localization is sequence dependent. Co-localization of ph and Pc throughout the genome and at bxd sequences suggest that these proteins either interact directly or function in close proximity at similar target genes. Co-immunoprecipitation experiments done on nuclear extracts show that ph and Pc proteins are present in the same irnmunoprecipitates, providing the first evidence that they associate in a multimeric complex.
EU Common Foreign Energy Policy
Creators: name: Τραμουντάνα, Χρυσάνθη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ενέργεια
Ευρωπαϊκή Ένωση
Εξωτερική Πολιτική
Energy
European Union
Foreign Policy

description: Σκοπός της διατριβής ήταν η περιγραφή, νομοθετικά, της Ευρωπαϊκής Ενεργειακής Ένωσης, κυρίως όσον αφορά την εξωτερική της πλευρά, στις εξωτερικές σχέσεις της Ένωσης. Στη συνέχεια, αναλύσαμε τα νομικά ερείσματα της ενεργειακής πολιτικής της ΕΕ στις Συνθήκες, καθώς επίσης το κατά πόσο η ενέργεια αποτελεί αρμοδιότητα της Ένωσης, τόσο στην εσωτερική αγορά όσο και στην κοινή εξωτερική της πολιτική. Τέλος, ερευνήσαμε το αν και κατά πόσο η ΕΕ έχει υιοθετήσει μια Κοινή Εξωτερική Πολιτική Ενέργειας, μελετώντας το παράδειγμα του Αγωγού Φυσικού Αερίου TAP.
description: The aim of the present thesis was the description of the regulatory instruments of the European Energy Union, with a specific focus on its external aspect, in terms of the external relations of the EU. Then, we analyzed the legal basis of the energy sector in the Treaties, as well as the competence the EU holds regarding its energy policy. Finally, we examined whether the EU has adopted a Common Foreign Energy Policy also using the case-study of TAP Natural Gas Pipeline.
A Strong-Lens Survey in AEGIS: the influence of large scale structure
Creators: name: Moustakas, L. A.
name: Marshall, P. J.
name: Newman, J. A.
name: Coil, A. L.
name: Cooper, M. C.
name: Davis, M.
name: Fassnacht, C. D.
name: Guhathakurta, P.
name: Hopkins, A.
name: Koekemoer, A.
name: Konidaris, N. P.
name: Lotz, J. M.
name: Willmer, C. N. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the results of a visual search for galaxy-scale strong gravitational lenses over 650 arcmin^2 of HST/ACS imaging in the DEEP2-EGS field. In addition to a previously-known Einstein Cross (the "Cross," HST J141735+52264, with z_lens=0.8106 and a published z_source=3.40), we identify two new strong galaxy-galaxy lenses with multiple extended arcs. The first, HST J141820+52361 (the ``Dewdrop''; z_lens=0.5798, lenses two distinct extended sources into two pairs of arcs z_source=0.while), 9818 the second, HST J141833+52435 (the ``Anchor''; z_lens=0.4625), produces a single pair of arcs (source redshift not yet known). All three definite lenses are fit well by simple singular isothermal ellipsoid models including external shear. Using the three-dimensional line-of-sight (LOS) information on galaxies from the DEEP2 data, we calculate the convergence and shear contributions, assuming singular isothermal sphere halos truncated at 200 h^-1 kpc. These are also compared against three-dimensional local-density estimates. We find that even strong lenses in demonstrably underdense local environments may be considerably affected by LOS contributions, which in turn, may be underestimates of the effect of large scale structure.
description: ApJ Letters, submitted. Part of the AEGIS ApJL Special Issue. 4 Figures, 1 Table. For a version with full-resolution figures, please see http://www.slac.stanford.edu/~pjm/HAGGLeS/astroph/legs.pdf