28,607 research outputs found

    On rate optimal private regression under local differential privacy

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    We consider the problem of estimating a regression function from anonymized data in the framework of local differential privacy. We propose a novel partitioning estimate of the regression function, derive a rate of convergence for the excess prediction risk over H\"older classes, and prove a matching lower bound. In contrast to the existing literature on the problem the so-called strong density assumption on the design distribution is obsolete.Comment: Revised versio

    Some Appell-type orthogonal polynomials on lattices

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    We investigate on some Appel-type orthogonal polynomial sequences on q-quadratic lattices and we provide some entire new characterizations of the Al-Salam Chihara polynomials (including the Rogers q-Hermite polynomials). The corresponding forms are well described. The proposed method can be applied to similar and to more general problems involving the Askey-Wilson and the Averaging operators, in order to obtain new characterization theorems for classical and semiclassical orthogonal polynomials on lattices

    Wisteria: A Female EcoGothic Metaphor in American Fiction Through the Ages

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    Women and nature have been so intrinsically linked in Western philosophy and the Anglo-American popular imagination, ‘each denigrated with reference to the other’ (Garrard, 2004), that despite feminist calls to separate them, gender and nature continue to be closely associated. Moreover, Female Gothic theories have demonstrated that monstrous nature is often configured through female corporeality. With the house and home designated as female domestic spaces, seen through the Gothic as a confined female space, it is hardly surprising that the porch and garden are similarly included within this domestic imagery. Indeed, the literary Victorian garden was often depicted as a site for young women to develop their nurturing skills and as a suitable space for chaperoned romantic relationships (Grasser, 2014). Flower imagery and gardening metaphors have reflected Western patriarchal ideals of femininity embedded by the Romantics, with monstrous nature associated with transgressive women and illicit sexual interactions taking place within the garden in Gothic texts. Yet, despite extensive criticism on nature and femininity and the more recent ecocritical turn in the Gothic, there is little research available on the frequent use of wisteria as a visual marker of the female domestic space. Moreover, as this paper demonstrates, wisteria is not just an indicator of the confining boundaries of female spaces in fiction but is consistently often a signifier of domestic abuse; one that women writers use to haunt the male imagination

    Grasping nothing: a study of minimal ontologies and the sense of music

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    If music were to have a proper sense – one in which it is truly given – one might reasonably place this in sound and aurality. I contend, however, that no such sense exists; rather, the sense of music takes place, and it does so with the impossible. To this end, this thesis – which is a work of philosophy and music – advances an ontology of the impossible (i.e., it thinks the being of what, properly speaking, can have no being) and considers its implications for music, articulating how ontological aporias – of the event, of thinking the absolute, and of sovereignty’s dismemberment – imply senses of music that are anterior to sound. John Cage’s Silent Prayer, a nonwork he never composed, compels a rerethinking of silence on the basis of its contradictory status of existence; Florian Hecker et al.’s Speculative Solution offers a basis for thinking absolute music anew to the precise extent that it is a discourse of meaninglessness; and Manfred Werder’s [yearn] pieces exhibit exemplarily that music’s sense depends on the possibility of its counterfeiting. Inso-much as these accounts produce musical senses that take the place of sound, they are also understood to be performances of these pieces. Here, then, thought is music’s organon and its instrument

    Évaluation de l'impact du changement climatique sur la défoliation de l'épinette noire par la tordeuse des bourgeons de l'épinette

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    Les modèles écologiques actuels prévoient de profonds effets des changements climatiques sur les régimes de perturbations naturelles des forêts. La tordeuse des bourgeons de l'épinette (Choristoneura fumiferana) (TBE) est le principal insecte défoliateur dans l'est de l'Amérique du Nord. Les épidémies de TBE ont un impact majeur sur la structure et la fonction de la forêt boréale canadienne puisque la défoliation entraîne une diminution de la croissance des arbres, une augmentation de la mortalité et une baisse de la productivité forestière. Les épidémies de TBE sont devenues plus sévères au cours du dernier siècle à cause des changements climatiques; cependant, nous savons peu de choses sur la manière dont l'effet intégré du climat et du TBE modifie la croissance des espèces hôtes. Nous évaluons ici comment l’interaction entre le climat et la gravité de l'épidémie affecte la croissance de l'épinette noire (Picea mariana) pendant l'épidémie de TBE qui a eu lieu entre 1968-1988 et 2006-2017. Nous avons compilé des séries dendrochronologiques (2271 arbres), des données de sévérité de l'épidémie (estimée par la défoliation aérienne observée) et des données climatiques pour 164 sites au Québec, Canada. Nous avons utilisé un modèle linéaire à effets mixtes pour déterminer l'impact des paramètres climatiques, de la défoliation cumulative (des cinq années précédentes) et de leur effet couplé sur la croissance en surface terrière. À la gravité maximale de l'épidémie, la croissance en surface terrière de l'épinette noire a été réduite de 14 à 18 % sur les cinq années en raison de l'effet TBE. Cette croissance a été affectée par le climat : des températures minimales estivales précédentes plus élevées et un indice d'humidité climatique estival plus élevé ont réduit la croissance de 11 % et 4 % respectivement. En revanche, l'effet négatif de la défoliation a été atténué de 9% pour une température minimale plus élevée au printemps précédent et de 7% pour une température maximale plus élevée l'été précédent. Cette étude améliore notre compréhension des effets combinés de la TBE et du climat et aide à prévoir les dommages futurs causés par cet insecte dans les peuplements forestiers afin de soutenir la gestion durable des forêts. Nous recommandons également que les projections des écosystèmes dans la forêt boréale incluent plusieurs classes de défoliation de la TBE et plusieurs scénarios climatiques

    父上の名まえ:トニ・モリスンの『ソロモンの歌』における黒人の父性および男らしさの表象

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    BEYOND THE MYTH: Screenwriting Approaches to Biographical Films

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    This PhD submission comprises an original screenplay on the relationship between African American activist Paul Robeson and the mining community of south Wales titled Robeson: They Can’t Stop Us Singing, and the accompanying exegesis. The aim is to explore, by academic study (gnosis) and creative practice (praxis), the previously overlooked field of writing biographical films, or biopics, and to acknowledge the role of the screenwriter in telling a person’s life story on film. The script is the experiment; the exegesis is the analysis and methodology. The role of the screenwriter is underrepresented across cinema studies, but no more so than in the discussion of biopics. My exegesis begins by exploring what academic and popular writing already exists on English-language biopics, highlighting that amidst auteurist approaches prevalent in cinema studies, little credit has been afforded to screenwriters. I seek to address this by examining how screenwriters have responded to historiographical and socio-political contexts while balancing the needs of the audience with factual integrity (or sometimes not), before using the case studies of Abraham Lincoln and Charles Lindbergh to explore how American hero figures have been represented on screen. How does a script written on Lincoln in 1939, for example, differ in terms of tone and political philosophy to one delivered in the 21st century? Using historical approaches, the exegesis then examines the life of Paul Robeson and the Welsh miners he knew, to observe the meticulous choices required by the screenwriter researching and writing a biopic script. Using primary sources (interviews with living dramatic writers, including the BAFTA-nominated screenwriter of the biopic, Good Vibrations) and secondary sources (screenplays, films, audio, interviews, other academic writing), I question where and when to begin and end a biographical story, which parts of a person’s life to include or jettison, how to make a historical figure’s events pertinent to a contemporary audience, and how to utilise fictionalised elements in a drama while adhering to a central truth. My own screenplay on Robeson and Wales is the embodiment of this research. The script demonstrates the myriad artistic decisions that need to be made to present the qualities and flaws of the historical figure. It shows why fictionalised moments and composite characters contribute to an understanding of a real person’s motives and feelings in a way documentary and historical writing cannot. And it stands as a record of the screenwriter’s previously overlooked contribution to creating biographical films

    A Walk Down Memory Lane: Racial Injustice in Lewis Nkosi’s Mating Birds

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    Using as a stepping stone Mating Birds by the late South African novelist Lewis Nkosi, I take a trip down memory lane to grapple with the issue of justice in apartheid era South Africa. The paper argues that the scales of the judiciary under the system of institutionalized racism was heavily weighted in favour of the white minority who ruled the roost in South Africa from 1948 to the early 1990s. Underpinned by a racist ideology that foregrounded the supposed purity of Afrikanerdom, the steamroller of the judicial system under apartheid denied any rights to South African blacks and coloured alike to the point of forefending love across the colour bar. The lead character in Mating Birds, to wit Sibiya, knows only too well the strictures of an unfair administration of justice. Sentenced to death by hanging for allegedly raping a white girl, his dogged impassioned denials fails to pack a punch as the laws of his country make it a crime for a black man to even have designs (no matter how sincere) on a white girl. Tapping into a methodology based on philosophical, sociological, psychoanalytic, psychological perspectives, the paper brings to light the multifaceted cruelty of race-spiked injustice as evidenced by Sidiya’s plight
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