cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identification of factors which facilitate and hinder the career adjustment of women engineers
Creators: name: Ramdin, Tara Eileen
Publisher: name: University of British Columbia
Year: 2009

description: A qualitative study involving twenty women engineers from the Lower Mainland and Kootenay region of British Columbia was undertaken to determine what factors hinder and facilitate their career adjustment. In the past, there has been an emphasis on the recruitment of women into the field of engineering; unfortunately, little attention has been given to retaining women once they finish their formal education. This study involved a semi-structured interview as well as a demographic questionnaire and focused on the factors which facilitated and hindered career adjustment. For those situations where women described incidents that hindered job satisfaction, they were also asked how they coped with these situations. Two additional pieces of information were gathered, how they chose to become engineers, and how they see their futures in engineering. Results from this study indicate that relationships in the workplace, career development issues, support, being excluded and women's issues are major factors in job satisfaction. Results also indicate that some methods of coping with hindering experiences may put some women at risk for leaving the field of engineering. Results from this study may assist counsellors and engineering associations in the development of strategies for the retention of women in engineering.
Three Faces of the Aharonov-Bohm Phase
Creators: name: Gupta, Patrick Das
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Beginning with the basic notions of quantum theory, impossibility of `trajectory' description for particles that ensues from uncertainty principle is discussed. Why the observed tracks in bubble/cloud chambers are not really the `trajectories' of high energy particles, rather they are simply the trails of the atoms/molecules excited or ionized in the direction of the high momenta of the incoming particles, are highlighted. Thereafter, the notion of symmetry and its application to the non-relativistic Schrodinger equation have been delineated. The demand for U(1) gauge invariance and the resulting `gauge miracle', that automatically leads to the correct interaction terms describing the electromagnetic force between the charge particles and the field, have been elaborated upon. A simple treatment, but with explicit derivation, of the Aharonov-Bohm effect, is presented, that underlines a strange phenomena - sites, impenetrable by charge particles but are threaded with magnetic field lines, conspire with a `Trojan Horse', namely the magnetic vector potential outside, to cause measurable shift in the double-slit interference fringes. This shift in the interference pattern is non-classical since the charge particles move in field-free regions. The crucial Aharonov-Bohm (AB) phase that makes its entry in the above bizarre effect is also deployed to derive the observed magnetic flux quantisation in superconductors as well as the Dirac result which implies that the existence of a single magnetic monopole anywhere in the universe would entail quantisation of the product of a particle's electric charge and the monopole's magnetic charge. Nontrivial consequences of AB phase follow whenever the physical region accessible, from the point of view of the wavefunction of a charge particle, is multiply-connected.
description: This article has been published as a chapter in `Lectures on Quantum Mechanics: Fundamentals and Applications', an Initiative of National Academy of Sciences, India (NASI), Delhi Chapter
Accretion-Powered Stellar Winds II: Numerical Solutions for Stellar Wind Torques
Creators: name: Matt, Sean
name: Pudritz, Ralph E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [Abridged] In order to explain the slow rotation observed in a large fraction of accreting pre-main-sequence stars (CTTSs), we explore the role of stellar winds in torquing down the stars. For this mechanism to be effective, the stellar winds need to have relatively high outflow rates, and thus would likely be powered by the accretion process itself. Here, we use numerical magnetohydrodynamical simulations to compute detailed 2-dimensional (axisymmetric) stellar wind solutions, in order to determine the spin down torque on the star. We explore a range of parameters relevant for CTTSs, including variations in the stellar mass, radius, spin rate, surface magnetic field strength, the mass loss rate, and wind acceleration rate. We also consider both dipole and quadrupole magnetic field geometries. Our simulations indicate that the stellar wind torque is of sufficient magnitude to be important for spinning down a ``typical'' CTTS, for a mass loss rate of $\sim 10^{-9} M_\odot$ yr$^{-1}$. The winds are wide-angle, self-collimated flows, as expected of magnetic rotator winds with moderately fast rotation. The cases with quadrupolar field produce a much weaker torque than for a dipole with the same surface field strength, demonstrating that magnetic geometry plays a fundamental role in determining the torque. Cases with varying wind acceleration rate show much smaller variations in the torque suggesting that the details of the wind driving are less important. We use our computed results to fit a semi-analytic formula for the effective Alfvén radius in the wind, as well as the torque. This allows for considerable predictive power, and is an improvement over existing approximations.
description: Accepted for publication in ApJ
Minutes of meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, July 3, 1942
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, dated July 3, 1942, regarding re buying the system, the lease of the Beaver Lake property, and the Conservation Fund.
The Transverse-momentum-dependent Parton Distribution Function and Jet Transport in Medium
Creators: name: Liang, Zuo-tang
name: Wang, Xin-Nian
name: Zhou, Jian
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that the gauge-invariant transverse-momentum-dependent (TMD) quark distribution function can be expressed as a sum of all higher-twist collinear parton matrix elements in terms of a transport operator. From such a general expression, we derive the nuclear broadening of the transverse momentum distribution. Under the maximal two-gluon correlation approximation, in which all higher-twist nuclear multiple-parton correlations with the leading nuclear enhancement are given by products of twist-two nucleon parton distributions, we find the nuclear transverse momentum distribution as a convolution of a Gaussian distribution and the nucleon TMD quark distribution. The width of the Gaussian, or the mean total transverse momentum broadening squared, is given by the path integral of the quark transport parameter $\hat q_F$ which can also be expressed in a gauge invariant form and is given by the gluon distribution density in the nuclear medium. We further show that contributions from higher-twist nucleon gluon distributions can be resummed under the extended adjoint two-gluon correlation approximation and the nuclear transverse momentum distribution can be expressed in terms of a transverse scale dependent quark transport parameter or gluon distribution density. We extend the study to hot medium and compare to dipole model approximation and ${\cal N}=4$ Supersymmetric Yang-Mills (SYM) theory in the strong coupling limit. We find that multiple gluon correlations become important in the strongly coupled system such as ${\cal N}=4$ SYM plasma.
description: 22 pages in RevTex with 2 figures final published version
Learning the structure of giant resonances from their $γ$-decay
Creators: name: Lv, W. L.
name: Niu, Y. F.
name: Colò, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The direct $γ$-decays of the giant dipole resonance (GDR) and the giant quadrupole resonance (GQR) of $^{208}$Pb to low-lying states are investigated by means of a microscopic self-consistent model. The model considers effects beyond the linear response approximation. The strong sensitivity of $γ$-decay to the isospin of the involved states is proven. By comparing their decay widths, a much larger weight of the $3_{1}^{-}$ component in the GQR wave function of $^{208}$Pb is deduced, with respect to the weight of the $2_{1}^{+}$ component in the GDR wave function. Thus, we have shown that $γ$-decay is a unique probe of the resonance wave functions, and a testground for nuclear structure models.
description: 6 pages, 3 figures
Is Graphene a Fermi Liquid?
Creators: name: Sarma, S. Das
name: Hwang, E. H.
name: Tse, Wang-Kong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We answer the question posed in the title above by considering theoretically the electron-electron interaction induced many-body effects in undoped (`intrinsic') and doped (`extrinsic') 2D graphene layers. We find that (1) intrinsic graphene is a marginal Fermi liquid with the imaginary part of the self-energy, ${Im}Σ(ω)$, going as linear in energy $ω$ for small $ω$, implying that the quasiparticle spectral weight vanishes at the Dirac point as $({ln}ω)^{-1}$; and, (2) extrinsic graphene is a well-defined Fermi liquid with ${Im}Σ(ω)\sim ω^2\mathrm{ln}ω$ near the Fermi surface similar to 2D carrier systems with parabolic energy dispersion. We provide analytical and numerical results for quasiparticle renormalization in graphene, concluding that all experimental graphene systems are ordinary 2D Fermi liquids since any doping automatically induces generic Fermi liquid behavior.
description: 5 pages, 2 figures
MatchThem:: Matching and Weighting after Multiple Imputation
Creators: name: Pishgar, Farhad
name: Greifer, Noah
name: Leyrat, Clémence
name: Stuart, Elizabeth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Balancing the distributions of the confounders across the exposure levels in an observational study through matching or weighting is an accepted method to control for confounding due to these variables when estimating the association between an exposure and outcome and to reduce the degree of dependence on certain modeling assumptions. Despite the increasing popularity in practice, these procedures cannot be immediately applied to datasets with missing values. Multiple imputation of the missing data is a popular approach to account for missing values while preserving the number of units in the dataset and accounting for the uncertainty in the missing values. However, to the best of our knowledge, there is no comprehensive matching and weighting software that can be easily implemented with multiply imputed datasets. In this paper, we review this problem and suggest a framework to map out the matching and weighting multiply imputed datasets to 5 actions as well as the best practices to assess balance in these datasets after matching and weighting. We also illustrate these approaches using a companion package for R, MatchThem.
description: 23 Pages, 3 Figures
Zademach, Wieland: Reich Gottes für diese Welt - Theologie gegen den Strich
Creators: name: Vorster, Hans
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 52 Nr. 3 (2003): Ökumenische Rundschau, Band 52, Heft 3
Upgrading immune response against COVID19: the vitamins and Food Checklist
Creators: name: Gaskell, Christine J
name: Bendriss, Ghizlane
Publisher: name: Zenodo
Year: 2021
Subjects: COVID19; coronavirus; vitamins; food

description: The Table aims at summarizing - for the general public - the food sources of the micronutrients that are beneficial in upgrading the immune system against the virus discussed in the published article: Importance of Dietary Changes During the Coronavirus Pandemic: How to Upgrade Your Immune Response by Dr Ali Chaari, Dr Ghizlane Bendriss, Dr Dalia Zakaria, Dr Clare McVeigh. https://www.frontiersin.org/articles/10.3389/fpubh.2020.00476/full
Expériences du processus de demandes d’asile canadien entre 2003 et 2014 : être Colombien, devenir réfugié et citoyen canadien
Creators: name: Leblanc-Martineau, Camille
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Colombie
Immigration
Demandeurs d’asile
Modèle dramaturgique
Canada

description: L’immigration est au centre d’enjeux sociaux, politiques, économiques, juridiques et psychologiques qui affectent les rapports de pouvoir au plan national et international. Notre thèse s’intéresse aux discrédits ressentis par les demandeurs d’asile colombiens entre 2003 et 2014 au Canada. À partir de sept entretiens semi-dirigés effectués à London, Sherbrooke et Drummondville, nous avons analysé les discrédits qui auraient pu être ressentis au cours du processus d’immigration, en nous fondant notamment sur le modèle dramaturgique de Goffman. Ce modèle nous a permis d’explorer le point de vue des demandeurs d’asile dans leurs interactions avec les agents d’immigration, et de contribuer ainsi à une réflexion plus globale sur les relations des acteurs en présence dans le processus d’immigration. Nous avons montré que les discrédits ressentis diffèrent selon les étapes du processus d’immigration, en distinguant trois moments clés, soient le départ de la Colombie, les démarches du processus et l’installation au Canada, étant donné les interactions différentes qu’occasionnent ces étapes avec des acteurs du système d’immigration et de la communauté. Nos résultats soulignent que les discrédits ressentis se vivent différemment selon que les demandeurs d’asile arrivent par un point d’entrée frontalier ou par l’ambassade canadienne en Colombie, notamment en raison des conditions liées à la cueillette des documents et au dévoilement de leur récit. Nous montrons également que le processus d’immigration et les discrédits ressentis ne s’arrêtent pas aux étapes formelles avec les agents d’immigration mais se prolongent durant la période d’installation que les demandeurs d’asile ressentent comme faisant partie du processus même d’immigration. Les discrédits alors ressentis dépendent des attentes des demandeurs face aux débouchés que peut leur offrir le Canada, et donc indirectement de l’âge des demandeurs qui doivent s’insérer dans la communauté à travers un emploi, l’école et l’acquisition d’une nouvelle langue. Le cadre dramaturgique permet de souligner que les craintes des demandeurs d’asile face à d’éventuels discrédits sont surtout liées à la capacité de convaincre les agents de la crédibilité de leur récit, dans un contexte où il leur appartient de faire entendre leur voix et de prouver leur identité de demandeurs d’asile.
Η συνεισφορά των ψηφιακών μοντέλων τοπογραφίας στον υπολογισμό αναγωγών σχετικών με το πεδίο βαρύτητας της Γης
Creators: name: Παπαγεωργίου, Πέτρος Τιμολέων
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Πεδίο βαρύτητας
Gravity

description: Η συνεισφορά των ψηφιακών μοντέλων τοπογραφίας στον υπολογισμό αναγωγών σχετικών με το πεδίο βαρύτητας της γης.
description: Products from satellite missions always give big benefits to countries all over the world that are using them. The Shuttle Radar Topographic Mission (SRTM) is one of them. Its product, a high resolution digital terrain model (DTM) of 3 arcsec (90 m), was a model that become available for Greece for various uses. Until today, the only high resolution DTMs that were available for Greece were produced by the Hellenic Military Geographic Service (HMGS). They have various resolutions but the finest of them, the one of the 100 m, is not yet available and it is only being used for military purposes. These DTMs are produced by digitizing topographic maps and therefore their accuracy may sometimes be unknown or not so reliable. The need of a very high resolution DTM is necessary when a high resolution, e.g., 0.5 – 1 arcmin geoid has to be computed. If this can not be done and a coarser DTM is used then the results of the topographic effects are likely to be aliased due to the insufficient topographic information used for the computations. Digital Terrain Models (DTMs) are very important in studies that have to do with gravity field, because they provide the high frequency content of the gravity field spectrum. These DTMs are nowadays widely available for geoid and gravity field approximation, due the continuous launch of new altimetric and gravity field satellite missions. In several countries around the world though, the DTMs are not widely available because they are produced by geodetic/cartographic agencies and are related to confidential issues. Moreover, the DTMs available are not homogeneous because they are derived by a merging of available height data. On the contrary, SRTM was launched on-board space shuttle Endeavour and collected data of the Earth’s topography in global scale and with homogeneous coverage. This had as result the distribution of a global 3" (roughly 90 m) SRTM DTM by NASA and the National Geospatial Intelligence Agency (NGA)
title: Adoption of FRS 102: evidence from UK SMEs
Creators: name: Arabiat, Omar
Publisher: name: University of Reading
Year: 2023

description: Under IASB’s initiatives of developing International Financial Reporting Standards (IFRS) for Small and Medium-sized Entities (SMEs), UK has played an important role in this by rolling out the new UK GAAP – FRS 102 The Financial Reporting Standard applicable in the UK and Republic of Ireland (FRS 102 thereafter). It’s widely acknowledged that FRS 102 is broadly based on the IFRS for SMEs. This research sets out to examine the determinants and consequences of FRS 102 adoption by UK SMEs, with a manually collected dataset of UK SMEs from 2009 to 2019. This PhD thesis consists of three empirical papers. The first paper focuses on the factors driving the UK SMEs towards adopting FRS 102. Our results show that SMEs with a higher level of leverage are less likely to adopt FRS 102, suggesting that SMEs with a higher level of long-term debt would have already established their private communication channel with the creditors, and their financial reports are less relied upon by the creditors. Further, the adoption of FRS 102 is significantly associated with firms’ growth prospect, audit quality, and industry classifications. The second paper examines the impact of FRS 102 on financial reporting quality, and also on the relationship between earnings management and leverage. We find that the adoption of FRS 102 by UK SMEs increases the quality of their financial statements. Further, before FRS 102 adoption, SMEs’ managers seek to manipulate earnings to avoid the prospect of violating debt covenants, while the adoption of FRS 102 has facilitated more intense monitoring from creditors. The third paper investigates the moderating impact of FRS 102 adoption on the relationship between trade credit and bank credit. Our results show that bank finance substitutes trade credit received, where FRS 102 adoption has weakened this relationship. This suggests that the adoption of FRS 102 has facilitated better financial information disclosure and alleviated the level of information asymmetry, and consequently, creditors such as banks would be better at assessing the financial risk associated with lending to the UK SMEs. To some extent, the adoption of FRS 102 has attracted more intense monitoring from the creditors. Further, despite that UK SMEs play the role of financial intermediaries by financing their sales activities via extending short-term bank credit to their customers, as recipients of trade credit, their customers would be indifferent to whether the UK SMEs adopted FRS 102 or not.
The Coincidence of Nuclear Star Clusters and Active Galactic Nuclei
Creators: name: Seth, Anil
name: Agueros, Marcel
name: Lee, Duane
name: Basu-Zych, Antara
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study galaxies that host both nuclear star clusters and active galactic nuclei (AGN) implying the presence of a massive black hole. We select a sample of 176 galaxies with previously detected nuclear star clusters that range from ellipticals to late-type spirals. We search for AGN in this sample using optical spectroscopy and archival radio and X-ray data. We find galaxies of all Hubble types and with a wide range of masses (10^9-11 solar masses) hosting both AGN and nuclear star clusters. From the optical spectra, we classify 10% of the galaxies as AGN and an additional 15% as composite, indicating a mix of AGN and star-formation spectra. The fraction of nucleated galaxies with AGN increases strongly as a function of galaxy and nuclear star cluster mass. For galaxies with both a NC and a black hole, we find that the masses of these two objects are quite similar. However, non-detections of black holes in Local Group nuclear star clusters show that not all clusters host black holes of similar masses. We discuss the implications of our results for the formation of nuclear star clusters and massive black holes.
description: Accepted for publication in ApJ. Version with high resolution figures available at http://www.cfa.harvard.edu/~aseth/nsc_agn_paper.pdf
The psychosocial impacts of driving cessation in later life : experiences, coping, and well-being
Creators: name: Walker, Sarah Wendy
Publisher: name: The Australian National University
Year: 2015

description: Older adults may face multiple and often overwhelming losses when they give up driving, creating a need for adjustment (Adler & Rottunda, 2006; M. J. Bauer, Rottunda, & Adler, 2003; Bedard & Kafka, 2008; Bonnel, 1999a; Carp, 1971; Cutler, 1972; Dellinger, Sehgal, Sleet, & Barrett-Connor, 2001; J.A. Kelley-Moore, J.G. Schumacher, E. Kahana, & B. Kahana, 2006; Liddle, Turpin, Carlson, & McKenna, 2008; Shope, 2003; Whitehead, Howie, & Lovell, 2006). Furthermore, driving cessation is related to poorer psychological well-being (Fonda, Wallace, & Herzog, 2001; Marottoli et al., 1997; Ragland, Satariano, & MacLeod, 2005; Windsor, Anstey, Butterworth, Luszcz, & Andrews, 2007). This thesis focuses on the impacts of no longer driving on psychological well-being, among an Australian population aged 65 years and above. Driving cessation literature is reviewed and embedded within the general context of older adult driving research. The Stress-Coping paradigm framework is adopted to better understand poorer well-being in relation to the post-cessation phase of driving within a broad spatial and temporal context. Self-Determination Theory (Deci & Ryan, 2000a, 2000b; Ryan, 2009) and the Assimilative and Accommodative Model of Coping (Brandtstadter & Renner, 1990a, 1992) provide the theoretical foundations from which to examine the driving status-well-being relationship. Questions addressed include: What are the experiences of older adults who give up driving? What is the impact of driving cessation stressors on well-being? Why is driving cessation experienced negatively? And, does coping buffer the effects of driving cessation on well-being? The Cognitive Behaviour Therapy (CBT) (A. T. Beck & Alford, 2009; A. T. Beck, Rush, Shaw, & Emery, 1979; J. S. Beck, 1995) and Acceptance and Commitment Therapy (ACT) (Luoma, et al., 2007) approaches to the conceptualisation and treatment of depressive symptoms generally, and specifically among older ex-drivers, and implications for policy makers are discussed.
The Evolution of NGC 7465 as Revealed by its Molecular Gas Properties
Creators: name: Young, Lisa M.
name: Meier, David S.
name: Bureau, Martin
name: Crocker, Alison
name: Davis, Timothy A.
name: Topal, Selçuk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present ALMA observations of CO isotopologues and high-density molecular tracers (HCN, HCO+, CN, etc.) in NGC 7465, an unusually gas-rich early-type galaxy that acquired its cold gas recently. In the inner 300 pc, the molecular gas kinematics are misaligned with respect to all other galaxy components; as the gas works its way inward it is torqued into polar orbits about the stellar kinematically-decoupled core (KDC), indicating that the stellar KDC is not related to the current gas accretion event. The galaxy also exhibits unusually high 12CO/13CO line ratios in its nucleus but typical 13CO/C18O ratios. Our calculations show that this result does not necessarily indicate an unusual [12CO/13CO] abundance ratio but rather that 12CO (1-0) is optically thin due to high temperatures and/or large linewidths associated with the inner decoupled, misaligned molecular structure. Line ratios of the higher-density tracers suggest that the densest phase of molecular gas in NGC 7465 has a lower density than is typical for nearby galaxies, possibly as a result of the recent gas accretion. All of the observed molecular properties of NGC 7465 are consistent with it having acquired its molecular (and atomic) gas from a spiral galaxy. Further detailed studies of the CO isotopologues in other early-type galaxies would be valuable for investigating the histories of those that may have acquired their gas from dwarfs. Finally, these ALMA data also show an unidentified line source that is probably a background galaxy similar to those found at z=1-3 in blind CO surveys.
description: 26 pages, accepted for publication in the Astrophysical Journal
Ηθική και πολιτική αρετολογία στη σοφόκλεια Αντιγόνη:
Creators: name: Λιόντα, Χρυσούλα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ηθική
Πολιτική θεωρία
Σοφοκλής
Αριστοτέλης
Αντιγόνη
Πολίτης
Ethics
Political theory
Sophocles
Antigone
Aristotle
Citizen

description: Σε μία εποχή όπου η πολιτική αρετή θεωρείται δεδομένη, χωρίς όμως να είναι, ενώ η ηθική αρετή έχει αποδεσμευτεί από κάθε πολιτική χροιά, είναι επιτακτική η ανάγκη να ιδωθεί ο πολίτης υπό το πρίσμα μιας ηθικής και πολιτικής αρετολογίας. Σε συνέχεια του παραπάνω προβληματισμού, η παρούσα μεταπτυχιακή εργασία «Ηθική και πολιτική αρετολογία στη Σοφόκλεια Αντιγόνη» επιχειρεί να ερμηνεύσει γνωρίσματα ηθικής και πολιτικής αρετολογίας μέσα από την τόσο γνωστή αρχαία ελληνική τραγωδία. Λαμβάνοντας υπόψη την Αριστοτέλεια φιλοσοφία, η εργασία διερευνά τις συνθήκες κάτω από τις οποίες συγκρούονται ηθική και πολιτική μέσα στην «Αντιγόνη». Επιπλέον, η εργασία αποτελεί απόπειρα προσέγγισης του βαθμού στον οποίο το ένα (ηθική) θα μπορούσε να συμπληρώνει το άλλο (πολιτική), προκειμένου να καταστήσουν «σπουδαίο» άρχοντα έναν «αγαθό» άνθρωπο-πολίτη.
description: The M.Sc. thesis entitled “Ethics and political virtue in Sophoclean Antigone” presents the ethical and political conflict in an ancient tragedy. Considering the Aristotelian philosophy, this thesis focuses on ethical and political virtues and examines the ideal combination for a “perfect” citizen in the frame of “Antigone”.
Accretion-Powered Stellar Winds III: Spin Equilibrium Solutions
Creators: name: Matt, Sean
name: Pudritz, Ralph E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the stellar wind torque calculated in a previous work (Paper II) to the spin-up and spin-down torques expected to arise from the magnetic interaction between a slowly rotating ($\sim 10$% of breakup) pre-main-sequence star and its accretion disk. This analysis demonstrates that stellar winds can carry off orders of magnitude more angular momentum than can be transferred to the disk, provided that the mass outflow rates are greater than the solar wind. Thus, the equilibrium spin state is simply characterized by a balance between the angular momentum deposited by accretion and that extracted by a stellar wind. We derive a semi-analytic formula for predicting the equilibrium spin rate as a function only of the ratio of $\dot M_{\rm w} / \dot M_{\rm a}$ and a dimensionless magnetization parameter, $Ψ\equiv B_*^2 R_*^2 (\dot M_{\rm a} v_{\rm esc})^{-1}$, where $\dot M_{\rm w}$ is the stellar wind mass outflow rate, $\dot M_{\rm a}$ the accretion rate, $B_*$ the stellar surface magnetic field strength, $R_*$ the stellar radius, and $v_{\rm esc}$ the surface escape speed. For parameters typical of accreting pre-main-sequence stars, this explains spin rates of $\sim 10$% of breakup speed for $\dot M_{\rm w} / \dot M_{\rm a} \sim 0.1$. Finally, the assumption that the stellar wind is driven by a fraction of the accretion power leads to an upper limit to the mass flow ratio of $\dot M_{\rm w} / \dot M_{\rm a} \la 0.6$.
description: Accepted for publication in ApJ
Fitness Uniform Optimization
Creators: name: Hutter, Marcus
name: Legg, Shane
Publisher: name: arXiv
Year: 2006
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In evolutionary algorithms, the fitness of a population increases with time by mutating and recombining individuals and by a biased selection of more fit individuals. The right selection pressure is critical in ensuring sufficient optimization progress on the one hand and in preserving genetic diversity to be able to escape from local optima on the other hand. Motivated by a universal similarity relation on the individuals, we propose a new selection scheme, which is uniform in the fitness values. It generates selection pressure toward sparsely populated fitness regions, not necessarily toward higher fitness, as is the case for all other selection schemes. We show analytically on a simple example that the new selection scheme can be much more effective than standard selection schemes. We also propose a new deletion scheme which achieves a similar result via deletion and show how such a scheme preserves genetic diversity more effectively than standard approaches. We compare the performance of the new schemes to tournament selection and random deletion on an artificial deceptive problem and a range of NP-hard problems: traveling salesman, set covering and satisfiability.
description: 25 double-column pages, 12 figures
Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling
Creators: name: Gotfryd, Dorota
name: Paerschke, Ekaterina
name: Wohlfeld, Krzysztof
name: Oles, Andrzej M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Several realistic spin-orbital models for transition metal oxides go beyond the classical expectations and could be understood only by employing the quantum entanglement. Experiments on these materials confirm that spin-orbital entanglement has measurable consequences. Here, we capture the essential features of spin-orbital entanglement in complex quantum matter utilizing 1D spin-orbital model which accommodates SU(2)xSU(2) symmetric Kugel-Khomskii superexchange as well as the Ising on-site spin-orbit coupling. Building on the results obtained for full and effective models in the regime of strong spin-orbit coupling, we address the question whether the entanglement found on superexchange bonds always increases when the Ising spin-orbit coupling is added. We show that (i) quantum entanglement is amplified by strong spin-orbit coupling and, surprisingly, (ii) almost classical disentangled states are possible. We complete the latter case by analyzing how the entanglement existing for intermediate values of spin-orbit coupling can disappear for higher values of this coupling.
description: Proceedings paper [Quantum Complex Matter Conference, June 2020, Frascati] reporting on the research first presented in Physical Review Research 2, 013353 (2020) [arXiv:1911.12180]
Διερεύνηση της χωρικής διακριτικής ικανότητας για τη διάκριση καλλιεργειών με τη χρήση δορυφορικών εικόνων SPOT-S και Quick Bird:
Creators: name: Χριστοφόρου, Μηλίτσα Χριστάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Διάκριση καλλιεργειών
Χωρική διακριτική ικανότητα
Δορυφορική εικόνα SPOT-S
Δορυφορική εικόνα Quick Bird
Επιβλεπόμενη ταξινόμηση
Image classification
Spatial resolution
Crop identification
SPOT-S
QuickBird

description: Ο σκοπός της παρούσας εργασίας ήταν η εύρεση του κατάλληλου μεγέθους εικονοστοιχείου για την αναγνώριση των καλλιεργειών σε περιοχή της Κύπρου, η οποία χαρακτηρίζεται από το μικρό μέγεθος αγροτεμαχίων, με τη χρήση τριών δορυφορικών εικόνων SPOT 5 και μιας QuickBird. Με τη χρήση δεδομένων πεδίου πραγματοποιήθηκε επιβλεπόμενη ταξινόμηση για τη διάκριση των καλλιεργειών σε εικόνες με διαφορετική χωρική διακριτική ικανότητα 2.5μ, 5μ και 10μ που δημιουργήθηκαν μετά από την προεπεξεργασία των αρχικών εικόνων. Ως δεδομένα εισόδου για κάθε μια από τις ταξινομήσεις χρησιμοποιήθηκαν τα αρχικά κανάλια των εικόνων, ο δείκτης βλάστησης NDVI ο μετασχηματισμός Tasseled Cap, που υπολογίστηκαν μετά από την επεξεργασία των δορυφορικών εικόνων για κάθε χωρική διακριτική ικανότητα, το υψομετρικό μοντέλο αναγλύφου (DEM) και ο χάρτης κλίσεων (Slope). Τα αποτελέσματα έδειξαν ότι την καλύτερη ακρίβεια ταξινόμησης έδωσε η εικόνα με 5μ χωρική διακριτική ικανότητα με Ολική ακρίβεια ταξινόμησης 88.92%. Τέλος η εικόνα αυτή χρησιμοποιήθηκε για την εξαγωγή στατιστικών παραμέτρων που αφορούν την κατανομή των καλλιεργειών στη Κύπρο.
description: This paper outlines the investigation of appropriate pixel size in order to identify and distinguish crops in Cyprus using multi-date remote sensed data with three SPOT 5 and one QuickBird images. Using, ground truth data supervised classification was performed on images with different spatial resolutions; 2.5, 5 and 10m, which were produced by preprocessing the initial images. As input for the classifications were used the initial bands of the images, vegetation indices NDVI, the Tasseled Cap transformation, the digital elevation model and the slope map. The results showed that the best classification performance was achieved with 5m pixel size where overall accuracy exceeded to 88.92%. Final, this image was used for the statistical analysis of crops distribution in Cyprus.
[Rezension von: Kock, Christoph, Natürliche Theologie, ein evangelischer Streitbegriff]
Creators: name: Hailer, Martin
name: Kock, Christoph
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 52 Nr. 3 (2003): Ökumenische Rundschau, Band 52, Heft 3
Η έννοια του νόμου στο προφητικό μήνυμα του Αμώς
Creators: name: Τοπαρλάκης, Κυριάκος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: subject: Νόμος
subject: Προφήτες
subject: Μήνυμα
subject: Αμώς
subject: Δίκαιο
subject: Δικαιοσύνη
subject: Law
subject: FOS: Law
subject: Prophets
subject: Message
subject: Amos
subject: Judgment
subject: Righteousness

description: Σκοπός της εργασίας είναι η ανασυγκρότηση –κατά το δυνατό- του νόμου, που συναντάμε στο προφητικό μήνυμα του Αμώς, και η εξέταση των επιμέρους χαρακτηριστικών του. Στην εισαγωγή παραθέτουμε –μεταξύ άλλων- και μια περιεκτική και ουσιαστική ιστορία της έρευνας. Στο Α΄ κεφάλαιο παρουσιάζουμε αναλυτικά τα αποτελέσματα της ερευνητικής δουλειάς των Albrecht Alt και Claus Westermann. Ο Alt μελέτησε με τη μέθοδο της κριτικής των μορφών τον Κώδικα της Διαθήκης και o Westermann με την ίδια μέθοδο τα προφητικά κείμενα. Στο Β΄ κεφάλαιο με πυξίδα την τυπολογία του Westermann εντοπίζουμε, οριοθετούμε και παρουσιάζουμε σχεδιαγραμματικά τις προφητείες κρίσης κατά του Ισραήλ, που συναντάμε στο προφητικό μήνυμα του Αμώς. Απομονώνουμε το τμήμα του κατηγορητηρίου και προχωρούμε σε λεπτομερή ανάλυση του περιεχομένου του, γιατί αποκλειστικά και μόνο σ’ αυτό λανθάνει ο «νόμος», στον οποίο αναφέρεται ο προφήτης μας. Αυτόν το «νόμο» προσπαθούμε να ανασυγκροτήσουμε με έμμεσο τρόπο, δηλαδή μελετώντας τις κατηγορίες, που απευθύνει ο προφήτης στους συγχρόνους του για τη διάπραξη διαφόρων παραπτωμάτων, και εντοπίζοντας τις διατάξεις της Πεντατεύχου, που αντιστοιχούν κατά περιεχόμενο σ’ αυτές. Στο Γ΄ και τελευταίο κεφάλαιο αξιοποιώντας και την τυπολογία του Alt εξετάζουμε αναλυτικά το «νόμο στον προφήτη Αμώς» και πιο συγκεκριμένα: α) τις διατάξεις που περιλαμβάνει, β) τον τύπο στον οποίο ανήκει, γ) το λεξιλόγιο των τεχνικών όρων που χρησιμοποιεί, και δ) το περιεχόμενό του.
description: The aim of this dissertation is to reconstruct-as possible- the law that we meet in the prophetic message of Amos and to examine its characteristics. In the Introduction a comprehensive and substantial history of the investigation is available. In the first chapter the conclusions of the research that was held by Albrecht Alt and Claus Westermann are presented in detail. Alt applied the form-critical method in the study of the Code of the Covenant and Westermann in the study of the prophetic texts. In the second chapter Amos’s prophetic judgement- speeches against Israel are located, determined and presented in a diagram by using as a compass Westermann’s basic forms of prophetic speech. The part of the accusation is isolated and its content is analyzed in detail, because exclusively in this part is hidden the “law” that prophet Amos refers to. It is attempted to reconstruct this “law” indirectly, namely by studying the accusations of Amos against his contemporaries for various transgressions and locating the corresponding - as far as their content is concerned- laws of the Pentateuch. In the last chapter the “law in prophet Amos” is examined thoroughly and more specifically: a) the laws, b) the form, c) the vocabulary of its technical terms, and d) the content.
Μορφοποίηση οξειδωμένων ινών άνθρακα με το σύμπλοκο παλλαδίου-νιτροπρωσσικου νατρίου: μελέτη της ηλεκτροχημικής τους συμπεριφοράς με κυκλική βολταμμετρία και φασματοσκοπία εμπέδησης
Creators: name: Σαμολαδάς, Αντώνιος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Μορφοποιημένα ηλεκτρόδια
Φασματοσκοπία εμπέδησης
Κυκλική βολταμμετρία
Παλλάδιο
Νιτροπρωσσικό νάτριο
Ινες άνθρακα
Modified electrodes
Impedance spectroscopy
Cyclic voltammetry
Palladium
Sodium nitroprusside
Carbon fibers

description: Στην παρούσα εργασία πραγματοποιήθηκε η μορφοποίηση οξειδωμένων ινών άνθρακα με τη δημιουργία στην επιφάνεια τους, φιλμ του σύμπλοκου παλλάδιου-νιτροπρωσσικού νατρίου. Τόσο η απόθεση του Παλλάδιου όσο και ο σχηματισμός του σύμπλοκου έγινε με ηλεκτροχημικό τρόπο. Η ηλεκτροχημική συμπεριφορά των μορφοποιημένων ηλεκτροδίων έγινε με τις μεθόδους της κυκλικής βολταμμετρίας και της φασματοσκοπίας εμπέδησης.
description: Modification of a carbon fiber electrode surface by means of a thin film of palladium pentacyanonitrosylferrate using electrochemical methods is described. The electrochemical behaviour of the modified electrodes have been studied by cyclic voltammetry and impedance spectroscopy.
Is a Classical Language Adequate in Assessing the Detectability of the Redshifted 21cm Signal from the Early Universe?
Creators: name: Loeb, Abraham
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The classical radiometer equation is commonly used to calculate the detectability of the 21cm emission by diffuse cosmic hydrogen at high redshifts. However, the classical description is only valid in the regime where the occupation number of the photons in phase space is much larger than unity and they collectively behave as a classical electromagnetic field. At redshifts z<20, the spin temperature of the intergalactic gas is dictated by the radiation from galaxies and the brightness temperature of the emitting gas is in the range of mK, independently from the existence of the cosmic microwave background. In regions where the observed brightness temperature of the 21cm signal is smaller than the observed photon energy, of 68/(1+z) mK, the occupation number of the signal photons is smaller than unity. Neverethless, the radiometer equation can still be used in this regime because the weak signal is accompanied by a flood of foreground photons with a high occupation number (involving the synchrotron Galactic emission and the cosmic microwave background). As the signal photons are not individually distinguishable, the combined signal+foreground population of photons has a high occupation number, thus justifying the use of the radiometer equation.
description: 4 pages, Accepted for publication in JCAP
On the prime spectrum of an automorphism group of an ${\rm AT4}(p,p+2,r)$-graph
Creators: name: Tsiovkina, Ludmila
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: This paper is devoted to the problem of classification of ${\rm AT4}(p,p+2,r)$-graphs. There is a unique ${\rm AT4}(p,p+2,r)$-graph with $p=2$, namely, the distance-transitive Soicher graph with intersection array $\{56, 45, 16, 1;1, 8, 45, 56\}$, whose local graphs are isomorphic to the Gewirtz graph. It is still unknown whether an ${\rm AT4}(p,p+2,r)$-graph with $p>2$ exists. The local graphs of each ${\rm AT4}(p,p+2,r)$-graph are strongly regular with parameters $((p+2)(p^2+4p+2),p(p+3),p-2,p)$. In the present paper, we find an upper bound for the prime spectrum of an automorphism group of a strongly regular graph with such parameters, and we also obtain some restrictions for the prime spectrum and the structure of an automorphism group of an ${\rm AT4}(p,p+2,r)$-graph in case when $p$ is a prime power. As a corollary, we show that there are no arc-transitive ${\rm AT4}(p,p+2,r)$-graphs with $p\in \{11,17,27\}$.
How helping professionals integrate the spiritual self in their work: qualitative research toward a working model
Creators: name: Patterson, Pamela Frances
Publisher: name: University of British Columbia
Year: 2009

description: This project uses interviews and existential-phenomenological analysis to explore the question of how helping professionals integrate the spiritual self in their work. Chandler, Holden and Kolander's definition of spirituality (1992) divides personhood between the personal and the spiritual. This broad definition is used in exploring the research question with two helping professionals. The Co-researchers—a Doctor and a Therapist— are in the mid forties, they are well established in their professional careers and they are articulate in the research area. Two distinct modes of incorporating the spiritual self are identified. One is characterized by the healing of relationships described through a spiritual-psychological journey towards connectedness to self, other and god consciousness. The second mode of incorporation is characterized by an appreciation of transformation arising from an openness to the influence of spiritual reality in the process of therapy. Findings suggest that the professional's personal, professional and spiritual maturity is pivotal in the effective integration of the spiritual self. The need for integration of the spiritual self is in response to the extreme needs of the client population. The Co-researchers discuss that this is a needed area of discussion in professional circles. Further research into this area is necessary.
Harnessing Ambient Sensing & Naturalistic Driving Systems to Understand Links Between Driving Volatility and Crash Propensity in School Zones: A generalized hierarchical mixed logit framework
Creators: name: Wali, Behram
name: Khattak, Asad
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Economics (econ.GN)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: With the advent of seemingly unstructured big data, and through seamless integration of computation and physical components, cyber-physical systems (CPS) provide an innovative way to enhance safety and resiliency of transport infrastructure. This study focuses on real world microscopic driving behavior and its relevance to school zone safety expanding the capability, usability, and safety of dynamic physical systems through data analytics. Driving behavior and school zone safety is a public health concern. The sequence of instantaneous driving decisions and its variations prior to involvement in safety critical events, defined as driving volatility, can be a leading indicator of safety. By harnessing unique naturalistic data on more than 41,000 normal, crash, and near-crash events featuring over 9.4 million temporal samples of real-world driving, a characterization of volatility in microscopic driving decisions is sought at school and non-school zone locations. A big data analytic methodology is proposed for quantifying driving volatility in microscopic real-world driving decisions. Eight different volatility measures are then linked with detailed event specific characteristics, health history, driving history, experience, and other factors to examine crash propensity at school zones. A comprehensive yet fully flexible state-of-the-art generalized mixed logit framework is employed to fully account for distinct yet related methodological issues of scale and random heterogeneity, containing multinomial logit, random parameter logit, scaled logit, hierarchical scaled logit, and hierarchical generalized mixed logit as special cases. The results reveal that both for school and non-school locations, drivers exhibited greater intentional volatility prior to safety-critical events... ...