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Structures De Lespace Des Phases Des Halos De Matiere Noire
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Book Synopsis Structures de L'espace Des Phases Des Halos de Matière Noire by : Michal Maciejewski
Download or read book Structures de L'espace Des Phases Des Halos de Matière Noire written by Michal Maciejewski and published by . This book was released on 2008 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Durant les trois dernières décennies, la cosmologie et le paradigme de la matière noire ont été étudiés grâce au développement des simulations cosmologiques à N-corps et, parallèlement, à l'acquisition de nouvelles données observationnelles impressionnantes (WMAP, SDSS, HST). Durant mon travail de thèse, j'ai étudié les structures internes des halos de matière noire des galaxies provenant des simulations numériques par une nouvelle méthode appliquée à l'espace des phases à six dimensions. Dans un premier temps, j'ai évalué différentes méthodes utilisées pour l'estimation de la densité de l'espace des phases comme la tessellation de Delaunay, les méthodes SPH et d'autres encore. En particulier, j'ai montré les avantages des analyses de la densité de l'espace des phases par rapport aux estimations de densité 3D habituelles. J'ai étudié différentes méthodes pour résoudre le problème de mise à l'echelle entre l'espace des vitesses et celui des positions comme l'emploi du critère d'entropie locale. Dans un deuxième temps, j'ai implémenté un nouveau chercheur hiérarchique de structures (HSF en anglais) multi-dimensionnel en introduisant des critères de coupe et de croissance originaux pour séparer efficacement les différentes structures dans l'espace des phases. J'ai passé en revue ses avantages et inconvénients par rapport aux algorithmes actuellement utilisés en analysant un large halo dans la Simulation Millenium. J'ai ensuite étudié les propriétés dynamiques et physiques des structures trouvées par mon algorithme. J'ai trouvé de nouvelles classes de structures tels que les queues de marée et les courants locaux, ce qui est très important dans le contexte cosmologique.
Book Synopsis La matière noire, clé de l'univers ? by : Françoise Combes
Download or read book La matière noire, clé de l'univers ? written by Françoise Combes and published by Vuibert. This book was released on 2016-01-01 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: La matière noire constitue l'une des plus grandes énigmes actuelles en physique comme en cosmologie. Au cours du XXe siècle, la théorie du big-bang a été couronnée de succès tout en révélant sa principale anomalie, celle d'une grande quantité de matière invisible dans les amas de galaxies non prise en compte, la matière noire. Dans la première partie du livre, Françoise Combes passe en revue les observations des manifestations de cette matière noire, à l'échelle des galaxies, des amas et des grandes structures, ainsi que sa nécessité dans la formation des galaxies. Puis, dans un deuxième temps, l'auteur nous en décrit les différents modèles ainsi que ses nouvelles alternatives (comme celle de la gravité modifiée par exemple).
Book Synopsis L'impact Des Grandes Structures de L'Univers Sur la Formation Des Halos de Matière Noire Et Des Galaxies by : Corentin Cadiou
Download or read book L'impact Des Grandes Structures de L'Univers Sur la Formation Des Halos de Matière Noire Et Des Galaxies written by Corentin Cadiou and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anisotropic large-scale distribution of matter is made of an extended network of voids delimited by sheets, with filaments at their intersection which together form the cosmic web. Matter that will later form dark matter halos and their galaxies flows towards compact nodes at filaments' intersections and in the process, retains the imprint of the cosmic web. In this thesis, I develop a conditional version of the excursion set theory which, using a model of a large-scale filament, enables me to show that anisotropic environment have an impact on the formation history of dark matter halos. The cosmic web then has a role in the formation of halos and their galaxies. I then build a model that is able to capture the evolution of the cosmic web (halo mergers, but also filament and wall mergers) that can be used to better constrain galaxy formation models. The model predicts that an excess of anisotropic accretion is expected in filaments compared to nodes, so that the formation history of galaxies is biased. The effect of anisotropic accretion on galaxy formation is then studied using hydrodynamical simulations and a novel numerical method tailored to accurately follow the accretion history of the gas. I show that the angular momentum is transported efficiently from the cosmic web down to the inner halo, where gravitational torques redistribute it to the disk and the inner halo.
Book Synopsis The Violence of Modernity by : Debarati Sanyal
Download or read book The Violence of Modernity written by Debarati Sanyal and published by JHU Press. This book was released on 2020-03-03 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Violence of Modernity turns to Charles Baudelaire, one of the most canonical figures of literary modernism, in order to reclaim an aesthetic legacy for ethical inquiry and historical critique. Works of modern literature are commonly theorized as symptomatic responses to the trauma of history. In a climate that tends to privilege crisis over critique, Debarati Sanyal argues that it is urgent to rethink literary experience in terms that recall its contestatory potential. Examining Baudelaire's poems afresh, she shifts the focus of critical attention toward an account of modernism as an active engagement with violence, specifically the violence of history in nineteenth-century France. Sanyal analyzes a literary current that uses the traditional hallmarks of modernism—irony, intertextuality, self-reflexivity, and formalism—to challenge the historical violence of modernity. Baudelaire and the committed ironists writing in his wake teach us how to read and resist the violence of history, and thereby to challenge the melancholy tenor of our contemporary "wound culture." In a series of provocative readings, Sanyal presents Baudelaire's poetry as an aesthetic form that contests historical violence through rhetorical strategies of complicity, counterviolence, and critique. The book develops a new account of Baudelaire's significance as a modernist by dislodging him both from his traditional status as a practitioner of "art for art's sake" and from his more recent incarnation as the poet of trauma. Following her extended analysis of Baudelaire's poetry, Sanyal in later chapters considers a number of authors influenced by his strategies—including Rachilde, Virginie Despentes, Albert Camus, and Jean-Paul Sartre—to examine the relevance of their interventions for our current climate of trauma and terror. The result is a study that underscores how Baudelaire's legacy continues to energize literary engagements with the violence of modernity.
Book Synopsis In Defiance of Painting by : Christine Poggi
Download or read book In Defiance of Painting written by Christine Poggi and published by Yale University Press. This book was released on 1992-01-01 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invention of collage by Picasso and Braque in 1912 proved to be a dramatic turning point in the development of Cubism and Futurism and ultimately one of the most significant innovations in twentieth-century art. Collage has traditionally been viewed as a new expression of modernism, one allied with modernism's search for purity of means, anti-illusionism, unity, and autonomy of form. This book - the first comprehensive study of collage and its relation to modernism - challenges this view. Christine Poggi argues that collage did not become a new language of modernism but a new language with which to critique modernism. She focuses on the ways Cubist collage - and the Futurist multimedia work that was inspired by it - undermined prevailing notions of material and stylistic unity, subverted the role of the frame and pictorial ground, and brought the languages of high and low culture into a new relationship of exchange.
Book Synopsis Cinema: The time-image by : Gilles Deleuze
Download or read book Cinema: The time-image written by Gilles Deleuze and published by U of Minnesota Press. This book was released on 1986 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the theoretical implications of the cinematographic image based on Henri Bergson's theories
Book Synopsis Poets, Patrons, and Printers by : Cynthia J. Brown
Download or read book Poets, Patrons, and Printers written by Cynthia J. Brown and published by Cornell University Press. This book was released on 2019-03-15 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cynthia J. Brown explains why the advent of print in the late medieval period brought about changes in relationships among poets, patrons, and printers which led to a new conception of authorship. Examining such paratextual elements of manuscripts as title pages, colophons, and illustrations as well as such literary strategies as experimentation with narrative voice, Brown traces authors' attempts to underscore their narrative presence in their works and to displace patrons from their role as sponsors and protectors of the book. Her accounts of the struggles of poets, including Jean Lemaire, Jean Bouchet, Jean Molinet, and Pierre Gringore, over the design, printing, and sale of their books demonstrate how authors secured the status of literary proprietor during the transition from the culture of script and courtly patronage to that of print capitalism.
Book Synopsis The Ascetic Imperative in Culture and Criticism by : Geoffrey Galt Harpham
Download or read book The Ascetic Imperative in Culture and Criticism written by Geoffrey Galt Harpham and published by University of Chicago Press. This book was released on 2011-01-15 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this bold interdisciplinary work, Geoffrey Galt Harpham argues that asceticism has played a major role in shaping Western ideas of the body, writing, ethics, and aesthetics. He suggests that we consider the ascetic as "the 'cultural' element in culture," and presents a close analysis of works by Athanasius, Augustine, Matthias, Grünewald, Nietzsche, Foucault, and other thinkers as proof of the extent of asceticism's resources. Harpham demonstrates the usefulness of his findings by deriving from asceticism a "discourse of resistance," a code of interpretation ultimately more generous and humane than those currently available to us.
Download or read book PASCAL. written by and published by . This book was released on 1994 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Musical Work of Nadia Boulanger by : Jeanice Brooks
Download or read book The Musical Work of Nadia Boulanger written by Jeanice Brooks and published by Cambridge University Press. This book was released on 2013-04-25 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nadia Boulanger - composer, critic, impresario and the most famous composition teacher of the twentieth century - was also a performer of international repute. Her concerts and recordings with her vocal ensemble introduced audiences on both sides of the Atlantic to unfamiliar historical works and new compositions. This book considers how gender shaped the possibilities that marked Boulanger's performing career, tracing her meteoric rise as a conductor in the 1930s to origins in the classroom and the salon. Brooks investigates Boulanger's promotion of structurally motivated performance styles, showing how her ideas on performance of historical repertory and new music relate to her teaching of music analysis and music history. The book explores the way in which Boulanger's musical practice relied upon her understanding of the historically transcendent masterwork, in which musical form and meaning are ideally joined, and shows how her ideas relate to broader currents in French aesthetics and culture.
Book Synopsis The Fairy-faith in Celtic Countries by : Walter Yeeling Evans-Wentz
Download or read book The Fairy-faith in Celtic Countries written by Walter Yeeling Evans-Wentz and published by Createspace Independent Publishing Platform. This book was released on 1911 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, which is first of all a folk-lore study, we pursue principally an anthropo-psychological method of interpreting the Celtic belief in fairies, though we do not hesitate now and then to call in the aid of philology; and we make good use of the evidence offered by mythologies, religions, metaphysics, and physical sciences.
Book Synopsis The Vision Machine by : Paul Virilio
Download or read book The Vision Machine written by Paul Virilio and published by . This book was released on 1994 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: No Marketing Blurb
Download or read book Degeneration written by Max Simon Nordau and published by DigiCat. This book was released on 2022-11-21 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: Degeneration is a book by Max Nordau which was published in two volumes. Within this work, he attacks what he believed to be degenerate art and comments on the effects of a range of social phenomena of the period, such as rapid urbanization and its perceived effects on the human body. Nordau believed degeneration should be diagnosed as a mental illness because those who were deviant were sick and required therapy.
Book Synopsis A Shock to Thought by : Brian Massumi
Download or read book A Shock to Thought written by Brian Massumi and published by Routledge. This book was released on 2005-07-05 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Shock to Thought brings together essays that explore Deleuze and Guattari's philosophy of expression in a number of contemporary contexts. It will be of interest to all those in philosophy, cultural studies and art theory. The volume also contains an interview with Guattari which clearly restates the 'aesthetic paradigm' that organizes both his and Deleuze's work.
Book Synopsis The Planetarium by : Nathalie Sarraute
Download or read book The Planetarium written by Nathalie Sarraute and published by Deep Vellum Publishing. This book was released on 2023-01-31 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: A young writer has his heart set on his aunt's large apartment. With this seemingly simple conceit, the characters of The Planetarium are set in orbit and a galaxy of argument, resentment, and bitterness erupts. Telling the story from various points of view, Sarraute focuses below the surface, on the emotional lives of the characters in a way that surpasses even Virginia Woolf. Always deeply engaging, The Planetarium reveals the deep disparity between the way we see ourselves and the way others see us.
Download or read book Le Tumulte Noir written by Jody Blake and published by Penn State Press. This book was released on 1999-01-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jody Blake demonstrates in this book that although the impact of African-American music and dance in France was constant from 1900 to 1930, it was not unchanging. This was due in part to the stylistic development and diversity of African-American music and dance, from the prewar cakewalk and ragtime to the postwar Charleston and jazz. Successive groups of modernists, beginning with the Matisse and Picasso circle in the 1900s and concluding with the Surrealists and Purists in the 1920s, constructed different versions of la musique and la danse negre. Manifested in creative and critical works, these responses to African-American music and dance reflected the modernists' varying artistic agendas and historical climates.
Book Synopsis An Introduction to Islamic Cosmological Doctrines by : Seyyed Hossein Nasr
Download or read book An Introduction to Islamic Cosmological Doctrines written by Seyyed Hossein Nasr and published by State University of New York Press. This book was released on 1993-07-01 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only book to deal with classical Islamic cosmology as it was formulated by the Ikhwan al-S'afa al Biruni and Ibn Sina during the tenth and eleventh centuries. These figures influenced all the later centuries of Islamic history and in fact created the cosmological framework within which all later scientific activity in the Islamic world was carried out--the enduring image of the cosmos within which Muslims have lived during the past millennium. Nasr writes from within the Islamic tradition and demonstrates how, based on the teachings of the Quran and the Prophet, the figures treated in this work integrated elements drawn from various ancient schools of philosophy and the sciences. This book is unique in its treatment of classical Islamic cosmology as seen from within the Islamic world-view and provides a key for understanding of traditional Islamic thought.
