634 research outputs found
Correlation of Opioid Mortality with Prescriptions and Social Determinants: A Cross-sectional Study of Medicare Enrollees
No full textVisibility and acceptance of discrete-sampling artifacts in visual displays
No full textPh. D. ThesisDigital visual displays are aimed to provide an illusion of a continuous reality through a
discrete presentation of visual information. This thesis explored three topics on (i) angular, (ii)
spatial, and (iii) temporal sampling characteristics, related to distortion visibility, acceptance,
and discomfort. In the first topic, we addressed the issue of optimizing the view density
in continuous parallax visualization by replicating the changing views of a 3-D object for
a moving observer. We measured the visibility of the related artifacts and evaluated the
performance of full-reference visual quality metrics. We found that the state-of-the-art metrics
can indirectly characterize artifact visibility and established a quantitative relationship for
threshold estimation on varying conditions. The second topic addressed the relation of the
contrast sensitivity function (CSF) to adaptation luminance and specifically its asymptotic
behavior at high light levels essential to modern high-luminance displays. Using a custombuilt system, we measured the CSF at relatively high luminance levels and spatial frequency
range, integrating our dataset to the existing research. We found a gradual transition among
the linear to DeVries-Rose to Weber regions with steeper slopes for higher frequencies and
lower luminance. A further decreasing region was located at low to intermediate frequencies.
Following this construct, we adopted a model consisting of central elements in the visual
signal processing and proposed an eight-parameter form for the CSF in the luminance domain.
The final topic addressed the effects of frame rate on distortion acceptance and its impact on
visual discomfort during regular display use. We assessed the perceived symptoms, preference,
and task performance under varying conditions. The measurements indicated that for nondemanding everyday tasks, the frame rate could be reasonably reduced without severe effects
on the observer; however, this tolerance diminished under more dynamic content. A potential
association of discomfort with the blinking activity was also discussedThe European Union’s Horizon 2020 research
and innovation program under the Marie Skłodowska-Curie grant agreement No 676401,
European Training Network on Full Parallax Imaging and Huawei Technologies Co., Lt
Introduction: Christos Tsiolkas and Contemporary Australia — The Outsider Artist
No full textChristos Tsiolkas is regularly acknowledged as one of the most important writers working in Australia—indeed, the world—today. However, his proclivity for the public essay (in venues such as The Monthly), as well as his willingness to speak out on important social and political issues (such as refugees and marriage equality), casts him not only as an important writer, but also as a critical public figure in contemporary Australia. This collection of articles takes the range of Tsiolkas’s works (both fiction and non-fiction, as well as their television and cinematic adaptations) as their impetus, using these as a model to explore the significance of Tsiolkas’s intellectual contribution to Australian public life. As such, these articles work across genre, across theories, across national and international borders, and across disciplines in order to make clear Tsiolkas’s contemporary significance. Building on recent book-length studies on the author, including Andrew McCann’s Christos Tsiolkas and the Fiction of Critique: Politics, Obscenity, Celebrity (2015) and my own Christos Tsiolkas: The Utopian Vision (2017), what these articles hold in common is an assertion that Tsiolkas’s fiction and non-fiction always and everywhere serve a political and social purpose. As I have argued elsewhere, Tsiolkas’s writing ultimately suggests the ways in which we can shape a better future for Australia
Development of a complete digital system for the computational analysis and modelling of the human visuospatial perception and kinematics in three-dimensional space, within a virtual environment
No full text160 σ.Σε προηγούμενες μελέτες, έχει παρατηρηθεί η ύπαρξη φαινομένων ανισοτροπίας του ανθρώπινου οπτικού συστήματος αντίληψης, στον χώρο των δύο διαστάσεων, σε ποικίλες οπτικοκινητικές λειτουργίες όσον αφορά την είσοδο, την έξοδο, και γνωσιακές
απαιτήσεις. Η διερεύνηση αυτών των φαινομένων στον χώρο των τριών διαστάσεων αποτέλεσε το κίνητρο για την παρούσα μελέτη. Σκοπός αυτής της εργασίας ήταν, αρχικά, η δημιουργία ενός ολοκληρωμένου ψηφιακού συστήματος για την υπολογιστική ανάλυση κινήσεων του άνω άκρου στον χώρο των τριών διαστάσεων, εντός ενός εικονικού περιβάλλοντος. Προς αυτή την κατεύθυνση, πραγματοποιείται μια εισαγωγή στα βασικά στοιχεία της αρχιτεκτονικής ενός συστήματος εικονικής πραγματικότητας, εστιάζοντας στις συσκευές εισόδου - εξόδου και τη μηχανή δημιουργίας και λειτουργίας ενός εικονικού κόσμου. Παρουσιάζεται η διεπαφή επικοινωνίας με το σύστημα μαγνητικής ανίχνευσης θέσης που χρησιμοποιήθηκε, και μέσω μηχανής παιχνιδιού αναπτύσσεται μια πειραματική στερεοσκοπική εφαρμογή. Ύστερα, διερευνάται η ύπαρξη συστηματικών σφαλμάτων στα τελικά σημεία της κίνησης του άνω άκρου προς απομνημονευμένους στόχους, αλλά και με οπτική υποβοήθηση, στον χώρο των τριών διαστάσεων. Το πρώτο μοτίβο αποτέλεσε μια τάση των τελικών σημείων της κίνησης να σφάλουν προς τους διαγώνιους άξονες κάθε τεταρτημόριου ενός εικονικού περιστρεφόμενου κύκλου
που περιλάμβανε όλους τους στόχους (oblique effect). Το δεύτερο μοτίβο αποτέλεσε μια τάση των τελικών σημείων της κίνησης να σφάλουν προς το σώμα του υποκειμένου (z-effect). Και τα δύο μοτίβα συστηματικών σφαλμάτων αυξάνονταν σε μέτρο καθώς η πληροφορία σχετικά με το ερέθισμα διαταράσσονταν παραμετρικά. Ένα παρόμοιο μοτίβο συστηματικών σφαλμάτων αναφέρεται στην βιβλιογραφία και αποδίδεται στην αντιληπτική κατηγοριοποίηση του χώρου από το υποκείμενο.Our main motivation was to investigate anisotropic phenomena in the human visual perception system, in three dimensional space. Such phenomena were observed in two dimensional space, in previous studies, in diverse tasks both in terms of input,
output, and cognitive demands. Our goal was initially the development of a complete digital system for the computational analysis of the upper limb movements in three-dimensional space, within a virtual environment. We introduce the main components of virtual reality system architecture and concentrate on input - output devices and the virtual reality engine. We present an interface between the magnetic tracking system used and a host system and use a game engine to develop a stereoscopic experimental application. We then investigate the directional distortion of the endpoints in a task of memory and visually guided pointing movements in three-dimensional
space. The first pattern resulted in the clustering of movement endpoints toward the diagonals of the four quadrants of an imaginary rotating circular area encompassing all target locations (oblique effect). The second pattern resulted in a tendency of movement endpoints to be closer to the body (z-effect). Both these patterns of systematic error increased in magnitude as information about the stimulus parametrically degraded. A pattern of systematic errors similar to the oblique effect has already been reported in the literature and is attributed to the subject's conceptual categorization of space.Χρήστος Α. Κασπίρης-Ρουσέλλη
The early development of the thought of Christos Yannaras
No full textEThOS - Electronic Theses Online ServiceGBUnited Kingdo
Christos Tsiolkas: the utopian vision
No full textMore than two decades ago, Christos Tsiolkas’s his first novel Loaded was published and he had achieved a cult following in the short-lived grunge fiction scene of Australian writing. The novel was quickly adapted as the film Head On (1998), directed by Ana Kokkinos, and starring popular young Greek actor, Alex Dimitriades; like the novel, it was well-received by critics, if not by mainstream literary and cinematic culture. For the next few years, Tsiolkas worked on Jump Cuts, an experimental collaborative autobiography, with Sasha Soldatow (1996), as well as a number of theatre productions – Who’s Afraid of the Working Class? (1999, co-written with Andrew Bovell, Melissa Reeves and Patricia Cornelius, and adapted to film as Blessed, also directed by Kokkinos [2009]), Thug (1998, written with Spiro Economopolous), and Elektra AD (1999) – but when The Jesus Man (1999) was published, its violent depiction of depression and suicide received critical attention as offensive and unnecessary. Partly because of the reception of The Jesus Man, and partly because of the density of its subject matter, his next novel, Dead Europe (2005) took six years to write. In the interim, he published a critical study of the film The Devil’s Playground (2002), and several more plays and screenplays: Viewing Blue Poles (2000), Saturn’s Return (2000), Fever (2002, co-written with Bovell, Reeves and Cornelius), Dead Caucasians (2002), Non Parlo di Salo (2005, written with Economopoulous), and The Hit (2006, written with Netta Yashin). Dead Europe was a triumphant return: it won the Age Book of the Year and the Melbourne Best Writing Award in 2006.
But it was the extraordinary critical and commercial success of The Slap (2008) which entirely changed Tsiolkas’s personal and professional circumstances. It was the fourth-highest selling book by an Australian author in 2009, won the ALS Gold Medal, was longlisted for the Man Booker Prize, shortlisted for the Miles Franklin Literary Award, won the Commonwealth Writers’ Prize and was Book of the Year for both the Australian Booksellers Association and the Australian Book Industry Award. The Slap was also adapted as a popular television series for the ABC in 2011, and for NBC in the United States in 2015. For the first time in his career, Tsiolkas was able to dedicate himself to writing full-time, but the attention paid to the novel also meant that Tsiolkas was now a household name – no longer a cult writer, his opinions are now courted and offered in popular and political publications. Barracuda (2013) follows the social realism of The Slap, and sold similarly well, riding on the back of its extraordinary predecessor. Merciless Gods (2014), a collection of short stories, some new, some previously published, is only recently being taken up by popular critics.
Tsiolkas’s work has become increasingly popular and appealing to readers outside of the academy. Tsiolkas’s works adopt a Modernist attitude to the concept of a utopia – a negative politics which simultaneously draws attention to the insufficiency of the present, a pastoral nostalgia for the past, and a longing for the impossible future to come. This first in-depth study of his entire corpus provides an understanding of Tsiolkas’s position in relation to Modernism, thereby drawing out his points about character, setting and politics, thereby helping us to think about what place his ideas about the individual and the community might have in our reading of contemporary Australia and contemporary world literature
Author self-citation in orthodontics is associated with author origin and gender.
No full textBACKGROUND
The aims of this bibliometric study were to determine author self-citation trends in high-impact orthodontic literature and to investigate possible association between self-citation and publication characteristics.
METHODS
Six orthodontic journals with the highest impact factor as ranked by 2017 Journal Citation Reports were screened for a full publication year (2018) for original research articles, reviews, and case reports. Eligible articles were scrutinized for article and author characteristics and citation metrics. Univariable and multivariable negative binomial regression was used to examine associations between self-citation incidence and publication characteristics.
RESULTS
Medians for author self-citation rate of the most self-citing authors and self-citations were 3.03% (range 0-50) and 1 (range 0-19), respectively. In the univariable analysis, there was no association between self-citation counts and study type (P = 0.41), article topic (P = 0.61), number of authors (P = 0.62), and rank of authors (P = 0.56). Author origin (P = 0.001), gender (P = 0.001) and journal (P = 0.05) were associated with self-citation counts and in the multivariable analysis only origin and gender remained strong self-citation predictors. Asian authors and females self-cited significantly less often than all other regions and male authors.
CONCLUSIONS
Authors in orthodontics do not self-cite at a frequency that suggests potential citation manipulation. Author origin and gender were the only variables associated with citations counts. More bibliometric research is necessary to draw solid conclusions about author self-citation trends in orthodontic literature
Contemporary Australian masculinities and De Certeau’s concept of la perruqe in Christos Tsiolkas’ novel The Slap (2008)
No full textThis paper will focus on how Christos Tsiolkas the author of The Slap (2008) invites us to view the complex range of private lives of his male characters living in suburban Melbourne through their daily routines, conversations and innermost thoughts. On the surface most appear to be participating in and achieving a certain level of success in their lives. However, this novel reveals when we agitate and dig below the “practices of everyday life” there is often a disquiet simmering away under the facade of family harmony, male bravado and contentment. This paper will argue that as a result of dissatisfaction with the established order of their lives, each man has managed to create another level of meaning for himself, his own form of la perruque (De Certeau 2011: 29),the concept of living proposed by Michel De Certeau. A treatment of the characters in this article draws on, and is used to illustrate the paradigm
Carcerals and Olympic Masculinities in Christos Tsiolkas’s Barracuda
No full textIn an effort to draw attention to the masculine crisis occurring in the era of globalisation, this paper elaborates on Australian author Christos Tsiolkas’s novel Barracuda and the central character’s self-discipline and struggle into reaching Olympic achievement. The course of his rise as a potential Olympic athlete but also his fall and crisis within an institutional framework of disciplines, which often symbolically turn into nightmarish prisons, resonate with Michel Foucault’s 1975 work Discipline and Punish. The latter’s ideas about discipline and the “carceral” will help interpret Tsiolkas’s novel and further understand how the Olympics work as a mechanism of discipline and compliance towards a kind of hegemonic masculinity and its inevitable crisis
The Effable and the Ineffable
No full text‘What is the criterion of truth?’, asks Christos Yannaras in The Effable and The Ineffable: The Linguistic Boundaries of Metaphysical Realism. Christos Yannaras is a Greek philosopher, Eastern Orthodox theologian and author of more than fifty books which have been translated into many languages. He is a professor emeritus of philosophy at the Panteion University of Social and Political Sciences, Athens.
Of The Effable and The Ineffable, Archbishop Rowan Williams says: ‘Christos Yannaras is one of the most original and revolutionary thinkers of modern Europe, and in this arresting, demanding book he sets out his vision of how a post-truth society might rediscover the reality of shared meaning and the hope of authentic life. Bringing the Greek Fathers into dialogue with the foremost thinkers of modernity, he gives us a comprehensive picture of what “logos” really means and why it matters.’ Rowan Williams
The Effable and The Ineffable: The Linguistic Boundaries of Metaphysical Realism is a title in the Winchester Modern Orthodox Dialogues. Modern Orthodox Dialogues examine the theological and cultural conversations currently taking place within the Orthodox Christian world. Modern Orthodox Dialogues also examine conversations between Orthodox Christianity and Western Christianity. The series aims to facilitate additional conversations and avenues of communication between the East and the West. For this reason, the series presents and highlights established Orthodox Christian thinkers whose thought is not known in the West. Winchester Modern Orthodox Dialogues promote new approaches and new voices to contribute to continuing conversations within Christianity. The Dialogues are edited by Andreas Andreopoulos
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