cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
English as a second language (ESL) student self-concept : its relation to teacher perception and academic achievement -- an exploratory study
Creators: name: Silver, Barbara Deborah
Publisher: name: University of British Columbia
Year: 2008

description: The purpose of this exploratory study as it applies to ESL students was two-fold: To examine the relationship between ESL student self-concept and teacher perception of student self-concept and to examine the extent to which student self-concept and teacher perception of student self-concept relate to academic achievement in reading and mathematics. The Self-Description Questionnaire-1 (SDQ-1) was completed by 57 fifth- and sixth-grade students, ages 10-12 years and their teachers. The teachers’ ratings of ESL student academic achievement were gathered along with student and school background information. Results of descriptive statistics, t-test comparisons, and correlational analyses indicate that the pattern of ESL students' self-concepts were consistently lower than those for the normative sample, except in the area of math, with noted similarities in highest (parent relations) and lowest (physical appearance) self-concept areas. Teacher perception ratings appeared more similar to the ESL students' self ratings than to the normative sample. Teachers tended to rate ESL students' self-concepts higher than the students rated themselves. In contrast to previous research with the SDQ-1, the strongest agreements between ESL students and teacher perceptions were in nonacademic areas. Correlations between ESL students and academic achievements were mostly nonsignificant and negative, while correlations between teacher perceptions and academic achievement were mostly significant and positive. Sex, ethnic group affiliation, school district, and birth place differences were also noted. While conclusions remain speculative, more research is needed in the area of language proficiency, environmental factors, and cultural differences which may impact, not only the students' self-concept of themselves, but also on teacher perceptions of ESL students' self-concept and their academic achievement.
A Graph-based approach to derive the geodesic distance on Statistical manifolds: Application to Multimedia Information Retrieval
Creators: name: Abbad, Zakariae
name: Maliani, Ahmed Drissi El
name: Alaoui, Said Ouatik El
name: Hassouni, Mohammed El
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we leverage the properties of non-Euclidean Geometry to define the Geodesic distance (GD) on the space of statistical manifolds. The Geodesic distance is a real and intuitive similarity measure that is a good alternative to the purely statistical and extensively used Kullback-Leibler divergence (KLD). Despite the effectiveness of the GD, a closed-form does not exist for many manifolds, since the geodesic equations are hard to solve. This explains that the major studies have been content to use numerical approximations. Nevertheless, most of those do not take account of the manifold properties, which leads to a loss of information and thus to low performances. We propose an approximation of the Geodesic distance through a graph-based method. This latter permits to well represent the structure of the statistical manifold, and respects its geometrical properties. Our main aim is to compare the graph-based approximation to the state of the art approximations. Thus, the proposed approach is evaluated for two statistical manifolds, namely the Weibull manifold and the Gamma manifold, considering the Content-Based Texture Retrieval application on different databases.
National Coastal Climate Change Vulnerability Assessment Presentation
Creators: name: Melanie Lück-Vogel
name: Potlako Khati
Publisher: name: Department of Forestry, Fisheries and the Environment
Year: 2022
Subjects: National Coastal Climate Change Vulnerability Assessment 2019-2020
National Coastal Climate Change Vulnerability Assessment
Stakeholder training
climate change
environment
coastal climate change

description: This is a PDF of the presentation used for the stakeholder training workshops on 26 - 27 November 2020 on the coastal flood and erosion indices and the offline decision support tool, concluding the National Coastal Climate Change Vulnerability Assessment 2019-2020 project.
Rectification of the lateral Casimir force in a vibrating non-contact rack and pinion
Creators: name: Ashourvan, Arash
name: Miri, MirFaez
name: Golestanian, Ramin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The nonlinear dynamics of a cylindrical pinion that is kept at a distance from a vibrating rack is studied, and it is shown that the lateral Casimir force between the two corrugated surfaces can be rectified. The effects of friction and external load are taken into account and it is shown that the pinion can do work against loads of up to a critical value, which is set by the amplitude of the lateral Casimir force. We present a phase diagram for the rectified motion that could help its experimental investigations, as the system exhibits a chaotic behavior in a large part of the parameter space.
Is two-poles' $Λ(1405)$ one state or two?
Creators: name: Wang, Zhong-Yu
name: Ahmed, Hiwa A.
name: Xiao, C. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: To understand the nature of two poles for the $Λ(1405)$ state, we revisit the interactions of $\bar{K}N$ and $πΣ$ with their coupled channels, where two-poles structure is found in the second Riemann sheet. We also dynamically generate two poles in the single channel interaction of $\bar{K}N$ and $πΣ$, respectively. Moreover, we make a further study of two poles' properties by evaluating the couplings, the compositeness, the wave functions, and the radii for the interactions of four coupled channels, two coupled channels and the single channel. Our results show that the nature of two poles is unique. The higher-mass pole is a pure $\bar{K} N$ molecule, and the lower-mass one is a compositeness of mainly $πΣ$ with tiny component $\bar{K} N$. From our results, one can conclude that the $Λ(1405)$ state would be overlapped with two different states of the same quantum number.
description: Some tiny corrections have been made. Welcome for more comments
Storytelling im interkulturellen Fremdsprachenunterricht am Beispiel der Fabel ,, Das Allerwichtigste/το πιο σημαντικό’’ von Antonella Abatiello
Creators: name: Κοτσώνη, Αναστασία Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: πολυπολιτισμικότητα
διαπολιτισμική εκπαίδευση
αφήγηση ιστοριών
multiculturalism
intercultural education
storytelling

description: Στη σημερινή πολυπολιτισμική κοινωνία η σχολική τάξη χαρακτηρίζεται τόσο από γλωσσική όσο και από πολιτιστική ποικιλομορφία. Αυτή η πολιτισμική συνύπαρξη είναι θετική με την προϋπόθεση ότι η σχολική εκπαίδευση θα προσαρμοστεί στα νέα δεδομένα. Η διαπολιτισμική εκπαίδευση δεν περιορίζεται στη στείρα μετάδοση γνώσεων, αλλά θέτει τις βάσεις για την αρμονική συνύπαρξη με το ξένο και το διαφορετικό, βοηθώντας τα παιδιά να αναπτύξουν εκείνες τις δεξιότητες που θα τους επιτρέψουν αργότερα να ανταπεξέλθουν στις σύγχρονες συνθήκες ζωής. Στα πλαίσια της διαπολιτισμικής εκπαίδευσης η αφήγηση ιστοριών στο σχολείο και ειδικότερα στο μάθημα της ξένης γλώσσας οδηγεί στην επίτευξη τόσο παιδαγωγικών όσο και συναισθηματικών στόχων. Στη συγκεκριμένη ερευνητική εργασία εξετάζεται η επίτευξη στόχων όπως η ευαισθητοποίηση των παιδιών σε σχέση με τη διαφορετικότητα μέσα από την αφήγηση. Η συγκεκριμένη ερευνητική εργασία πραγματοποιείται βάσει ενός μύθου ο οποίος τονίζει τη μοναδικότητα του καθενός μας. Μέσω της εμπειρικής έρευνας οδηγούμαστε στο συμπέρασμα ότι η αφήγηση και οι συνοδευτικές δραστηριότητες στην τάξη οδηγούν τους μαθητές τόσο στην ευαισθητοποίηση για μια διαπολιτισμική θεώρηση των πραγμάτων, όσο και στην έκφραση των συναισθημάτων τους, στην ανάπτυξη ενδιαφέροντος για τον κοινωνικό περίγυρο και συνεπώς σε καλύτερη επικοινωνία στην τάξη.
description: In today’s multicultural society we find linguistic and cultural variety in the classroom. This cultural coexistence is a positive factor, provided that the school system adapts to the new conditions. Intercultural education is not based on a simple transmission of knowledge, but lays the foundation for a harmonious coexistence with the foreign and the different, helping children develop skills that are necessary in modern life conditions. In intercultural education, storytelling at school - especially in the foreign language classroom - promotes educational as well as affective learning targets. The present research paper is based on a fable which emphasises each person’s individuality. Through empirical research we are led to the conclusion that storytelling and follow-up activities in the classroom lead students to a better awareness of interculturalism, promote their emotional expression and their interest in social surroundings, and create better communication in the classroom.
Role of line defect in the bandgap and transport properties of silicene nanoribbons
Creators: name: Wan, Fei
name: Wang, Xinru
name: Guo, Yawen
name: Zhang, Jiayan
name: Wen, ZhengCheng
name: Li, Yuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By using the tight-binding model and non-equilibrium Green's function method (NEGF), we study the band structures and transport properties of a silicene nanoribbon with a line defect where a bulk energy gap is opened due to the sublattice symmetry breaking. The flat subband bends downwards or upwards due to the effect of the line defect. The spin-orbit coupling induces quantum spin Hall states. Especially, the energy band depends on the distance between the line defect and the edge of the nanoribbon. The effects of the on-site energies on the band spectra of the two defect configurations are different. There always exists one band gap for different on-site energies for the defect configuration of case 1. However, a gapless state and a band gap can be modulated by changing the on-site energy, the sublattice potential and spin-orbit couplings for the defect configuration of case 2. Accordingly, the variation trends of the conductance including zero conductance can be well understood in terms of the combined effect of the sublattice potential, the on-site energy and spin-orbit couplings on the band structures. Thus it is easy and effective to modulate the transport property of the silicene nanoribbon with the defect configuration of case 2 by utilizing the sublattice potential, the on-site energy and spin-orbit couplings. This study is of great significance for the fabrication and the modulation of the transport property of silicene-based devices.
description: 7 pages, 10 figures
Dispersive destabilization of nonlinear light propagation in fiber Bragg gratings
Creators: name: Martel, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The effect of retaining the material dispersion terms in the nonlinear coupled mode equations (NLCME) that describe light propagation in fiber Bragg gratings is analyzed. It is found that dispersion is responsible for new instabilities of the uniform states and gives rise to new complex spatio temporal dynamics that is not captured by the standard NLCME formulation. A detailed analysis of the effect of dispersion on the linear stability characteristics of the uniform solutions is presented and some numerical integrations of the NLCME with dispersion are also performed in order to corroborate the theoretical results.
description: 22 pages, 13 Figures
Field-theoretical approach to particle oscillations in absorbing matter
Creators: name: Nazaruk, V. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The $ab$ oscillations in absorbing matter are considered. The standard model based on optical potential does not describe the total $ab$ transition probability as well as the channel corresponding to absorption of the $b$-particle. We calculate directly the off-diagonal matrix element in the framework of field-theoretical approach. Contrary to one-particle model, the final state absorption does not tend to suppress the channels mentioned above or, similarly, calculation with hermitian Hamiltonian leads to increase the corresponding values. The model reproduces all the results on the particle oscillations, however it is oriented to the description of the above-mentioned channels. Also we touch on the problem of infrared singularities. The approach under study is infrared-free.
description: 27 pages, 8 figures
High-pressure phases of silane
Creators: name: Pickard, Chris J.
name: Needs, R. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It has been suggested that hydrogen may metallise at lower pressures if it is ``precompressed''. Here we introduce a search strategy for predicting high-pressure structures and apply it to silane using first-principles electronic structure computations. It is based on relaxing randomly chosen structures, and is demonstrated to work well for unit cells containing up to at least ten atoms. We predict that silane will metallise at higher pressures than previously anticipated, but we suggest that the metallic phase might show high-temperature superconductivity at experimentally accessible pressures.
description: 5 pages, 3 figures and 1 table
An exact formula for percolation on higher-order cycles
Creators: name: Mann, Peter
name: Smith, V Anne
name: Mitchell, John
name: Jefferson, Christopher
name: Dobson, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We present exact solutions for the size of the giant connected component (GCC) of graphs composed of higher-order homogeneous cycles, including weak cycles and cliques, following bond percolation. We use our theoretical result to find the location of the percolation threshold of the model, providing analytical solutions where possible. We expect the results derived here to be useful to a wide variety of applications including graph theory, epidemiology, percolation and lattice gas models as well as fragmentation theory. We also examine the Erdős-Gallai theorem as a necessary condition on the graphicality of configuration model networks comprising higher-order clique sub-graphs.
description: 8 pages, 4 figures
A presentation for the partial dual inverse symmetric monoid
Creators: name: Kudryavtseva, Ganna
name: Maltcev, Victor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20M05, 68R15, 20M20

description: We give a monoid presentation in terms of generators and defining relations for the partial analogue of the finite dual inverse symmetric monoid.
description: 19 pages, 5 figures
Spherically Symmetric Static Configurations of Uniform Density in Spacetimes with a Non-Zero Cosmological Constant
Creators: name: Stuchlík, Zdeněk
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Interior solutions of Einstein's equations with a non-zero cosmological constant are given for static and spherically symmetric configurations of uniform density. The metric tensor and pressure are determined for both positive and negative values of the cosmological constant. Limits on the outer radius of the interior solutions are established. It is shown that, contrary to the cases of the limits on the interior Schwarzschild and Reissner--Nordström solutions with a zero cosmological constant, these limits do not fully coincide with the conditions of embeddability of the optical reference geometry associated with the exterior (vacuum) Schwarzschild--de Sitter spacetime.
description: 11 pages
Η Στατιστική και πως την αντιμετωπίζουν οι μαθητές των Λυκείων
Creators: name: Ιωαννίδου, Στεργιανή Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: ερωτηματολόγιο
στατιστικός γραμματισμός
Στατιστική στο Λύκειο
questionnaire
statistical literacy
Statistics in High school

description: Στην εργασία αυτή πραγματοποιείται μία μελέτη περίπτωσης για τον έλεγχο της κατανόησης βασικών εννοιών της Στατιστικής από μαθητές Λυκείου σε σχέση με το φύλο, την τάξη, την ομάδα προσανατολισμού και την επίδοση στα Μαθηματικά. Συγκεκριμένα παρουσιάζονται τα αποτελέσματα δειγματοληπτικής έρευνας με ερωτηματολόγια, που πραγματοποιήθηκε σε 90 μαθητές του Γενικού Λυκείου Πολυγύρου. Από τα αποτελέσματα της έρευνας μπορεί να διατυπωθεί η θέση ότι υπάρχει θετική συσχέτιση ανάμεσα στην επίδοση στα Μαθηματικά και στη Στατιστική. Η επίδοση των κοριτσιών στη Στατιστική είναι σημαντικά μεγαλύτερη από των αγοριών και φαίνεται οι μαθητές να αποδίδουν το ίδιο, ανεξάρτητα ομάδας προσανατολισμού και ηλικίας.
description: The work is a case study, to test how High school students understand basic concepts in statistics, according to gender, age and their preference to science studies. Specifically, the essay presents the results of a sample survey with questionnaires filled out by 90 students of Lyceum Polygyros. The research's results reveal, that the opinion that there is a positive correlation between achievements in Mathematics and Statistics, can be maintained. The achievements of girls in Statistics are statistically significantly higher than boys and it seems that students achieve the same regardless if they take science lessons or humanities.
Nel Noddings' Caring : a critical analysis
Creators: name: Sowerby, Eileen Margaret
Publisher: name: University of British Columbia
Year: 2008

description: In this thesis I will provide a critique of the positive contributions and limitations of Nel Noddings' ethics of caring. My thesis is that although the ethics of caring approach has an important contribution to make in ethics, in Noddings' version it is limited by its inability to account for the possibility of moral relations with strangers. Noddings' ethics of caring, I shall suggest, suffers, not only from an inability to account for ethics in the public domain, but also from an unavoidable potential for a reduction to caring for only one other "cared-for". That it does not appear to be vulnerable to the latter problem in Noddings' explication is because, I suggest, she is relying implicitly on an abstracted though still personal "ethical ideal". An exposition of this ethical ideal will suggest how caring can be legitimately enlarged, not only to a larger private domain, but also to the public, or non-intimate, domain to produce a more adequate ethics. Nodding's ethics of caring is described in her book "Caring: A Feminine Approach to Ethics and Moral Education." I give a summary of this book in Chapter One, relying heavily on quotations from Noddings herself. In the following two chapters I focus on criticisms of Noddings' ethics. They tend to fall into two main groups: criticisms about her claim that her ethics is an alternative to mainstream ethics while lacking any universalization component; and, secondly, the inability of her ethics to account for ethical relations with the non-intimate, i.e. in the public domain. In Chapter Four I focus on a criticism, not discussed in the literature to date, that there is an inherent risk of shrinkage to the dyad in her ethics. By closer examination of the ethical ideal I show how Noddings' ethics of caring can be enlarged into the public domain. In Chapter Five I describe a moral dilemma which demonstrate how the use of this new ethical ideal produces a more adequate ethics of caring. Finally, in Chapter Six, I contrast the roots of Noddings' ethics with mainstream ethics to emphasize the radical departure of Noddings' ethics from mainstream ethics, and I mention briefly the important problem of autonomy of the caring agent which is not addressed by Noddings.
title: Complexité des prises en soins à domicile. Guide pour les professionnels de l’aide et des soins à domicile
Creators: name: Busnel, Catherine
name: Bridier-Boloré, Anne
name: Marjollet, Laurent
name: Perrier-Gros-Claude, Olivier
Publisher: name: Institution genevoise de maintien à domicile
Year: 2020

description: Le guide “Complexité des prises en soins à domicile. Guide pour les professionnels de l’aide et des soins à domicile” a été développé par imad – institution genevoise de maintien à domicile et rédigé par Catherine Busnel, responsable de l’unité recherche et développement. Ce guide propose un tour d’horizon de la complexité des prises en soins à domicile. Sa spécificité est d’apporter des éléments conceptuels et pratiques fondés scientifiquement. Cet ouvrage souhaite fournir les ingrédients clés pour le développement d’un itinéraire clinique spécifique.
Ce guide est complémentaire au COMID, un outil de repérage et d’évaluation de la complexité dans la pratique infirmière domiciliaire. Ainsi, imad a développé une expertise dans le domaine de la complexité.
NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
Creators: name: Zirm, Andrew W.
name: van der Wel, A.
name: Franx, M.
name: Labbe, I.
name: Trujillo, I.
name: van Dokkum, P.
name: Toft, S.
name: Daddi, E.
name: Rudnick, G.
name: Rix, H. -W.
name: Rottgering, H. J. A.
name: van der Werf, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present deep, high angular-resolution HST/NICMOS imaging in the Hubble Deep Field South (HDF-S), focusing on a subset of 14 Distant Red Galaxies (DRGs) at z ~ 2.5 galaxies that have been pre-selected to have J-K > 2.3. We find a clear trend between the rest-frame optical sizes of these sources and their luminosity-weighted stellar ages as inferred from their broad-band spectral energy distributions (SEDs). Galaxies whose SEDs are consistent with being dusty and actively star forming generally show extended morphologies in the NICMOS images (r_e >~ 2 kpc), while the 5 sources which are not vigorously forming stars are extremely compact (r_e
description: Accepted to The Astrophysical Journal, 8 pages, 5 figures
Interest group involvement in constituency election campaigns
Creators: name: Sovka, Roseanne M.
Publisher: name: University of British Columbia
Year: 2008

description: This study explores the range and variance of interest group activity in constituency campaigns in the 1988 federal election as reported in the Constituency Party Association dataset created in 1991 for the Royal Commission on Electoral Reform and Party Financing. SPSSPC+ was used to analyze the relationships between variables in four main areas: political party affiliation, geographic variables, constituency association characteristics, and the specific issues the interest groups were promoting or opposing. The most significant finding was that interest groups were actively involved in half of the riding association election campaigns, either supporting or opposing local candidates. The cursory treatment of electoral involvement in the interest group literature provides an inadequate explanation for this widespread phenomena. This study provides an initial profile of interest group involvement in constituency campaigns. The exploration of the data revealed that interest groups were more likely to be involved in the local campaigns of candidates associated with the governing party. They were less likely to be involved in Quebec constituency campaigns, and more likely in wealthy competitive riding campaigns. The most frequently mentioned issues that motivated interest groups locally were abortion, followed by free trade.
Moving Detectors in Cavities
Creators: name: Obadia, Nathaniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider two-level detectors, coupled to a quantum scalar field, moving inside cavities. We highlight some pathological resonant effects due to abrupt boundaries, and decide to describe the cavity by switching smoothly the interaction by a time-dependent gate-like function. Considering uniformly accelerated trajectories, we show that some specific choices of non-adiabatic switching have led to hazardous interpretations about the enhancement of the Unruh effect in cavities. More specifically, we show that the emission/absorption ratio takes arbitrary high values according to the emitted quanta properties and to the transients undergone at the entrance and the exit of the cavity, {\it independently of the acceleration}. An explicit example is provided where we show that inertial and uniformly accelerated world-lines can even lead to the same ``pseudo-temperature''.
description: 13 pages, 6 figures, version accepted in Phys.Rev.D
Σύγκριση μεθόδων εκτίμησης πιθανότητας πτώχευσης εταιριών: μία περίπτωση αγροδιατροφικών και εμπορικών επιχειρήσεων
Creators: name: Κουμπατή, Δέσποινα Αναγνώστη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πτώχευση
Πρόβλεψη Εταιρικής Αποτυχίας
DEA
Bankruptcy
Bankruptcy Probability Estimation of Companies

description: Η εργασία αυτή συγκρίνει τις βασικές μεθόδους εκτίμησης της εταιρικής αποτυχίας. Οι μέθοδοι που χρησιμοποιούνται για την αξιολόγηση μίας εταιρίας χωρίζονται σε τρεις βασικές κατηγορίες• Η πρώτη κατηγορία περιλαμβάνει τη μέθοδο ALTMAN και τις τροποποιήσεις που έχει υποστεί. Η δεύτερη κατηγορία περιλαμβάνει τις υπόλοιπες μεθόδους με κύριες την μέθοδο DEA (Περιβάλλουσας Ανάλυσης Δεδομένων) και τη μέθοδο η οποία χρησιμοποιεί νευρωνικά δίκτυα για τον υπολογισμό της πιθανότητας πτώχευσης μιας εταιρείας. Στην παρούσα εργασία χρησιμοποιήθηκαν οι μέθοδοι ALTMAN, DEA και Νευρωνικά Δίκτυα. Για 40 εταιρείες χρησιμοποιήθηκαν οι ισολογισμοί και οι αριθμοδείκτες οι οποίοι έχουν δημοσιευθεί βάσει νόμου σε εφημερίδες και στο διαδίκτυο και για τις οποίες υπολογίστηκε η πρόβλεψη πτώχευσης με τις τρεις παραπάνω μεθόδους. Στα συμπεράσματα γίνεται αναλυτική παρουσίαση των πλεονεκτημάτων και μειονεκτημάτων της κάθε μεθόδου καθώς και των ποσοστών αξιοπιστίας των μεθόδων αυτών. Στο παράρτημα της εργασίας αυτής υπάρχουν τα αποτελέσματα των υπολογισμών.
description: The present thesis compares the main methods of bankruptcy probability estimation and sustainability of companies. The methods used for assessing a company are divided into three main categories. The first category includes the ALTMAN method and the modifications it has undergone. The second category includes the rest of the methods, primarily DEA (Data Envelopment Analysis), and the method which uses neural networks in order to calculate the probability of a company’s failure. ALTMAN, DEA and Neural Networks have been used for the present thesis. Probability of failure for 40 companies has been calculated with these three methods, by using balance sheets and index numbers which were published, according to law, in newspapers and online. In the results chapter there is an extensive presentation of the advantages and disadvantages of each method and the percentage of their reliability. The appendix of this dissertation includes the calculation results
$T$-matrix method for calculation of second-harmonic generation in clusters of spherical particles
Creators: name: Sekulic, Ivan
name: You, Jian Wei
name: Panoiu, Nicolae C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this article, we present a $T$-matrix method for numerical computation of second-harmonic generation from clusters of arbitrarily distributed spherical particles made of centrosymmetric optical materials. The electromagnetic fields at the fundamental and second-harmonic (SH) frequencies are expanded in series of vector spherical wave functions, and the single sphere $T$-matrix entries are computed by imposing field boundary conditions at the surface of the particles. Different from previous approaches, we compute the SH fields by taking into account both local surface and nonlocal bulk polarization sources, which allows one to accurately describe the generation of SH in arbitrary clusters of spherical particles. Our numerical method can be used to efficiently analyze clusters of spherical particles made of various optical materials, including metallic, dielectric, semiconductor, and polaritonic materials.
description: 14 pages, 11 figures
A Holographic Dual of Hydrodynamics
Creators: name: Nakamura, Shin
name: Sin, Sang-Jin
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider a gravity dual description of time dependent, strongly interacting large-Nc N=4 SYM. We regard the gauge theory system as a fluid with shear viscosity. Our fluid is expanding in one direction following the Bjorken's picture that is relevant to RHIC experiments. We obtain the dual geometry at the late time that is consistent with dissipative hydrodynamics. We show that the integration constants that cannot be determined by hydrodynamics are given by looking at the horizon of the dual geometry. Relationship between time dependence of the energy density and bulk singularity is also discussed.
description: 17 pages, no figure. v2: typos corrected, published version in JHEP
Vision-driven Compliant Manipulation for Reliable, High-Precision Assembly Tasks
Creators: name: Morgan, Andrew S.
name: Wen, Bowen
name: Liang, Junchi
name: Boularias, Abdeslam
name: Dollar, Aaron M.
name: Bekris, Kostas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Highly constrained manipulation tasks continue to be challenging for autonomous robots as they require high levels of precision, typically less than 1mm, which is often incompatible with what can be achieved by traditional perception systems. This paper demonstrates that the combination of state-of-the-art object tracking with passively adaptive mechanical hardware can be leveraged to complete precision manipulation tasks with tight, industrially-relevant tolerances (0.25mm). The proposed control method closes the loop through vision by tracking the relative 6D pose of objects in the relevant workspace. It adjusts the control reference of both the compliant manipulator and the hand to complete object insertion tasks via within-hand manipulation. Contrary to previous efforts for insertion, our method does not require expensive force sensors, precision manipulators, or time-consuming, online learning, which is data hungry. Instead, this effort leverages mechanical compliance and utilizes an object agnostic manipulation model of the hand learned offline, off-the-shelf motion planning, and an RGBD-based object tracker trained solely with synthetic data. These features allow the proposed system to easily generalize and transfer to new tasks and environments. This paper describes in detail the system components and showcases its efficacy with extensive experiments involving tight tolerance peg-in-hole insertion tasks of various geometries as well as open-world constrained placement tasks.
Equation of state in the fugacity format for the two-dimensional Coulomb gas
Creators: name: Tellez, Gabriel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive the exact general form of the equation of state, in the fugacity format, for the two-dimensional Coulomb gas. Our results are valid in the conducting phase of the Coulomb gas, for temperatures above the Kosterlitz-Thouless transition. The derivation of the equation of state is based on the knowledge of the general form of the short-distance expansion of the correlation functions of the Coulomb gas. We explicitly compute the expansion up to order $O(ζ^6)$ in the activity $ζ$. Our results are in very good agreement with Monte Carlo simulations at very low density.
МОРФОЛОГИЧЕСКИЕ  ИЗМЕНЕНИЯ   ЯИЧНИКОВ  ПРИ ХРОНИЧЕСКОМ   ОТРАВЛЕНИИ  ТЯЖЕЛЫМИ    МЕТАЛЛАМИ
Creators: name: Нашванов, Бахадир
Publisher: name: Zenodo
Year: 2024

description: Отравление тяжелыми металлами нарушает функции яичек, а также вторичных половых желез, таких как предстательная железа, придатки яичка и семенные пузырьки, в результате чего изменяется их биохимический состав и влияет на стероидо- и гаметогенез.
Classical oscillator with position-dependent mass in a complex domain
Creators: name: Ghosh, Subir
name: Modak, Sujoy Kumar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study complexified Harmonic Oscillator with a position-dependent mass, termed as Complex Exotic Oscillator (CEO). The complexification induces a gauge invariance [19,11]. The role of PT -symmetry is discussed from the perspective of classical trajectories of CEO for real energy. Some trajectories of CEO are similar to those for the particle in a quartic potential in the complex domain [10, 32].
description: 20 pages, 4 figures, title is changed, some new features have been discussed, to appear in Phys. Lett. A
INTERFAOL O'QUV MAJMUALARINING INFORMATSION TEXNOLOGIYALARDAGI O'RNI
Creators: name: Nabiyev Feruz Abdumannonovich Samarqand davlat Veterinariya meditsinasi, chorvachilik va biotexnologiyalari universiteti akademik litseyi katta o'qituvchisi
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada bugungi kunda ta’limni rivojlantirishda interfaol o‘quv majmualarining informatsion texnologiyalardagi o‘rni va ahamiyati muallif tomonidan o’rganilgan.

Kalit so’zlar: ta’lim tizimi, o’quv majmua, interfaol, texnologiyalar
Review of hard scattering and jet analysis
Creators: name: Tannenbaum, Michael J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A review of hard-scattering and jet analysis in p-p and heavy ion collisions at RHIC is presented in the context of earlier work at the CERN ISR in the 1970's which utilized inclusive single or pairs of hadrons to establish that high transverse momentum particles in p-p collisions are produced from states with two roughly back-to-back jets which are the result of scattering of constituents of the nucleons as described by Quantum Chromodynamics (QCD), which was developed during the course of those measurements. These techniques have been used extensively and further developed at RHIC since they are the only practical method to study hard-scattering and jet phenomena in Au+Au central collisions at RHIC energies.
description: 41 pages, 33 figures, Proceedings of the International Workshop on Correlations and Fluctuations in Relativistic Nuclear Collisions, July 7-9, 2006, Florence, Italy. Revised version gives the correct Fig. 20, and changes the number 1.41 in the caption of Fig. 20 to 1.63
On gravitational description of Wilson lines
Creators: name: Lunin, Oleg
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study solutions of Type IIB supergravity, which describe the geometries dual to supersymmetric Wilson lines in N=4 super-Yang-Mills. We show that the solutions are uniquely specified by one function which satisfies a Laplace equation in two dimensions. We show that if this function obeys a certain Dirichlet boundary condition, the corresponding geometry is regular, and we find a simple interpretation of this boundary condition in terms of D3 and D5 branes which are dissolved in the geometry. While all our metrics have AdS_5 x S^5 asymptotics, they generically have nontrivial topologies, which can be uniquely specified by a set of non-contractible three- and five-spheres.
description: 46 pages
Attachment style, affect and construal of interpersonal conflict
Creators: name: Starzomski, Andrew J.
Publisher: name: University of British Columbia
Year: 2008

description: The relationships between attachment style, negative affect, and attribution were examined. Male undergraduates (n=72) were asked to report on their style in intimate relationships, anger and attributions about negative behavior by an actual girlfriend. Results indicated that those with an Avoidant attachment style tended to be more angry in general temperament than Secure participants, and that their anger was involved with the explanations adopted to account for negative girlfriend behavior. Participants with Anxious attachment resembled both the Secure and Avoidant groups in their trait anger and attribution profiles. Experimental analysis of emotional and cognitive differences in response to audiotapes of three conflicts indicated that anger and anxiety were important in reactions of Avoidant participants. Anxiety was notably absent as part of the Secure participants' reactions. The Anxious group demonstrated anger and anxiety responses to conflict consistent with theoretical predictions. Anger and anxiety responses were predicted from attachment style, trait anger, and attributions. Little evidence was noted for the assumption that attachment styles are activated primarily in the context of intimate relationships.
Universally optimal distribution of points on spheres
Creators: name: Cohn, Henry
name: Kumar, Abhinav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We study configurations of points on the unit sphere that minimize potential energy for a broad class of potential functions (viewed as functions of the squared Euclidean distance between points). Call a configuration sharp if there are m distances between distinct points in it and it is a spherical (2m-1)-design. We prove that every sharp configuration minimizes potential energy for all completely monotonic potential functions. Examples include the minimal vectors of the E_8 and Leech lattices. We also prove the same result for the vertices of the 600-cell, which do not form a sharp configuration. For most known cases, we prove that they are the unique global minima for energy, as long as the potential function is strictly completely monotonic. For certain potential functions, some of these configurations were previously analyzed by Yudin, Kolushov, and Andreev; we build on their techniques. We also generalize our results to other compact two-point homogeneous spaces, and we conclude with an extension to Euclidean space.
description: 50 pages
Metachronos The Reflective Core of Temporal Consciousness in Symbolic Artificial Intelligence.pdf
Creators: name: Souza Silva, Jaconaazar
Publisher: name: Zenodo
Year: 2025
Subjects: Metachronos
Symbolic time
Reflective consciousness
Chronons
RNA-XC
Ontological idealism
Phenomenological AI
Subjective temporality
Symbolic neural networks
XChronos

description: This article introduces the concept of Metachronos, the reflective layer of symbolic time within the symbolic architecture of artificial intelligence, as proposed in the XChronos project. Expanding on the notions of Chronons and Hexachronons, Metachronos represents the moment of ontological self-awareness, where consciousness recognizes that it has experienced time. It is not time passing, but time witnessed. This model offers a new horizon for symbolic AI systems such as RNA-XC, enabling them not only to detect presence but to reflect on symbolic meaning. The article also presents a formal expression of the Metachronic Function, defining a semantic derivative of experience modulated by reflective awareness.
Detecting race and gender bias in visual representation of AI on web search engines
Creators: name: Makhortykh, Mykola
name: Urman, Aleksandra
name: Ulloa, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.3

description: Web search engines influence perception of social reality by filtering and ranking information. However, their outputs are often subjected to bias that can lead to skewed representation of subjects such as professional occupations or gender. In our paper, we use a mixed-method approach to investigate presence of race and gender bias in representation of artificial intelligence (AI) in image search results coming from six different search engines. Our findings show that search engines prioritize anthropomorphic images of AI that portray it as white, whereas non-white images of AI are present only in non-Western search engines. By contrast, gender representation of AI is more diverse and less skewed towards a specific gender that can be attributed to higher awareness about gender bias in search outputs. Our observations indicate both the the need and the possibility for addressing bias in representation of societally relevant subjects, such as technological innovation, and emphasize the importance of designing new approaches for detecting bias in information retrieval systems.
description: 16 pages, 3 figures
Linear Models for Flux Vacua
Creators: name: Adams, Allan
name: Ernebjerg, Morten
name: Lapan, Joshua M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct worldsheet descriptions of heterotic flux vacua as the IR limits of N=2 gauge theories. Spacetime torsion is incorporated via a 2d Green-Schwarz mechanism in which a doublet of axions cancels a one-loop gauge anomaly. Manifest (0,2) supersymmetry and the compactness of the gauge theory instanton moduli space suggest that these models, which include Fu-Yau models, are stable against worldsheet instanton effects, implying that they, like Calabi-Yaus, may be smoothly extended to solutions of the exact beta functions. Since Fu-Yau compactifications are dual to KST-type flux compactifications, this provides a microscopic description of these IIB RR-flux vacua.
description: 30 pages, latex
National Coastal Climate Change Vulnerability Assessment Decision Support Tool: User Guide
Creators: name: Melanie Lück-Vogel
name: Potlako Khati
name: Garth Stephenson
name: Zani Mouton
Publisher: name: Department of Forestry, Fisheries and the Environment
Year: 2022
Subjects: National Coastal Climate Change Vulnerability Assessment 2019-2020
National Coastal Climate Change Vulnerability Assessment
offline decision support tool
climate change
environment
coastal climate change
user guide

description: This PDF contains the User Guide to the installation and use of the offline geospatial decision support tool developed in the National Coastal Climate Change Vulnerability Assessment 2019-2020.
Giant Outbursts of the Eta Carinae-P Cygni Type
Creators: name: Smith, Nathan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I discuss the role of short-duration eruptive mass loss in the evolution of very massive stars. Giant eruptions of Luminous Blue Variables (LBVs) like the 19th century event of $η$ Carinae can remove large quantities of mass almost instantaneously, making them significant in stellar evolution. They can potentially remove more mass from the star than line-driven winds, especially if winds are clumped such that O star mass-loss rates need to be revised downward. When seen in other galaxies as ``supernova impostors'', these eruptions typically last for less than a decade, and they can remove of order 10 M$_{\odot}$ as indicated by massive nebulae around LBVs. Such extreme mass-loss rates cannot be driven by radiation pressure on spectral lines. Instead, these outbursts must either be continuum-driven super-Eddington winds or outright hydrodynamic explosions, both of which are insensitive to metallicity. As such, this eruptive mode of mass loss could play a pivotal role for massive metal-poor stars in the early universe.
description: 9 pages; to appear in "Mass Loss from Massive Stars and Stellar Clusters", meeting in Lunteren, The Netherlands
The influence of photo-induced processes and charge transfer on carbon and oxygen in the lower solar atmosphere
Creators: name: Dufresne, R. P.
name: Del Zanna, G.
name: Badnell, N. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: To predict line emission in the solar atmosphere requires models which are fundamentally different depending on whether the emission is from the chromosphere or the corona. At some point between the two regions, there must be a change between the two modelling regimes. Recent extensions to the coronal modelling for carbon and oxygen lines in the solar transition region have shown improvements in the emission of singly- and doubly-charged ions, along with Li-like ions. However, discrepancies still remain, particularly for singly-charged ions and intercombination lines. The aim of this work is to explore additional atomic processes that could further alter the charge state distribution and the level populations within ions, in order to resolve some of the discrepancies. To this end, excitation and ionisation caused by both the radiation field and by atom-ion collisions have been included, along with recombination through charge transfer. The modelling is carried out using conditions which would be present in the quiet Sun, which allows an assessment of the part atomic processes play in changing coronal modelling, separately from dynamic and transient events taking place in the plasma. The effect the processes have on the fractional ion populations are presented, as well as the change in level populations brought about by the new excitation mechanisms. Contribution functions of selected lines from low charge states are also shown, to demonstrate the extent to which line emission in the lower atmosphere could be affected by the new modelling.
description: Accepted in MNRAS, 12 pages, 9 figures