Compression et restauration pour l'imagerie du ciel à haute résolution angulaire

Compression et restauration pour l'imagerie du ciel à haute résolution angulaire PDF Author: Claire Dollet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 183

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Book Description
Cette thèse présente des méthodologies pour réaliser de l’imagerie, complète ou partielle, du ciel avec une résolution proche de 0.1 arcsec. Le ciel est généralement observé avec les instruments les plus divers sur des zones bien définies. Pourtant, l’homogénéité spatiale et temporelle des données est importante pour mieux caractériser l’histoire, la composition et l’évolution de l’univers. Le débit télémétrique constitue un obstacle majeur pour obtenir une cartographie complète à haute résolution. Pour le limiter il est possible de réduire la résolution dans l’une des directions et de compresser fortement les données. Si la zone céleste est observée sous différents angles de vue, la haute résolution dans toutes les directions peut être restaurée en combinant les images de manière adéquate. La compression proposée ici consiste à soustraire les étoiles les plus brillantes et à sélectionner l’information significative en utilisant une transformation en ondelettes. Une méthode a été développée pour restaurer au sol les champs en se plaçant dans l’espace de Fourier. La simulation d’observations réalistes pour la mission européenne Gaia a permis de tester ce concept de compression et de restauration. Un projet dédié à l’imagerie multispectrale du ciel augmenterait l’intérêt d’une telle procédure. Actuellement, seule la transmission de fenêtres, vecteurs de vingt à une quarantaine de valeurs autour de chaque objet détecté à bord, est prévue pour Gaia. La capacité de faire de l’imagerie à haute résolution angulaire à partir de ces données d’extension spatiale limitée a été démontrée ici. Cette méthode permet de décrire l’environnement de tous les objets détectés à bord.

Compression et restauration pour l'imagerie du ciel à haute résolution angulaire

Compression et restauration pour l'imagerie du ciel à haute résolution angulaire PDF Author: Claire Dollet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 183

Get Book Here

Book Description
Cette thèse présente des méthodologies pour réaliser de l’imagerie, complète ou partielle, du ciel avec une résolution proche de 0.1 arcsec. Le ciel est généralement observé avec les instruments les plus divers sur des zones bien définies. Pourtant, l’homogénéité spatiale et temporelle des données est importante pour mieux caractériser l’histoire, la composition et l’évolution de l’univers. Le débit télémétrique constitue un obstacle majeur pour obtenir une cartographie complète à haute résolution. Pour le limiter il est possible de réduire la résolution dans l’une des directions et de compresser fortement les données. Si la zone céleste est observée sous différents angles de vue, la haute résolution dans toutes les directions peut être restaurée en combinant les images de manière adéquate. La compression proposée ici consiste à soustraire les étoiles les plus brillantes et à sélectionner l’information significative en utilisant une transformation en ondelettes. Une méthode a été développée pour restaurer au sol les champs en se plaçant dans l’espace de Fourier. La simulation d’observations réalistes pour la mission européenne Gaia a permis de tester ce concept de compression et de restauration. Un projet dédié à l’imagerie multispectrale du ciel augmenterait l’intérêt d’une telle procédure. Actuellement, seule la transmission de fenêtres, vecteurs de vingt à une quarantaine de valeurs autour de chaque objet détecté à bord, est prévue pour Gaia. La capacité de faire de l’imagerie à haute résolution angulaire à partir de ces données d’extension spatiale limitée a été démontrée ici. Cette méthode permet de décrire l’environnement de tous les objets détectés à bord.

Innovate Bristol

Innovate Bristol PDF Author: Sven Boermeester
Publisher:
ISBN: 9781949677072
Category :
Languages : en
Pages :

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Book Description
Innovate Bristol highlights and celebrates those companies and individuals that are actively working at building a better tomorrow for all. Innovation Ecosystems thrive through the involvement and support of companies and individuals from all industries, which is why the Innovate series not only focuses on the innovators but also those people whom the Innovation Ecosystem, would not be able to thrive without.

A German-English Dictionary for Chemists

A German-English Dictionary for Chemists PDF Author: Austin M 1876-1956 Patterson
Publisher: Scholar Select
ISBN: 9781296567972
Category :
Languages : en
Pages : 340

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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Philostratus

Philostratus PDF Author: Philostratus (the Athenian)
Publisher:
ISBN:
Category :
Languages : en
Pages : 280

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Book Description


Analecta: Or, Materials For a History of Remarkable Providences; Mostly Relating to Scotch Ministers and Christians

Analecta: Or, Materials For a History of Remarkable Providences; Mostly Relating to Scotch Ministers and Christians PDF Author: Robert Wodrow
Publisher: BoD – Books on Demand
ISBN: 3385129664
Category : Fiction
Languages : en
Pages : 410

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Book Description
Reprint of the original, first published in 1842.

Peril at the Exposition

Peril at the Exposition PDF Author: Nev March
Publisher: Minotaur Books
ISBN: 1250855047
Category : Fiction
Languages : en
Pages : 352

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Book Description
Captain Jim Agnihotri and his new bride, Diana Framji, return in Nev March's Peril at the Exposition, the follow up to March's award-winning, Edgar finalist debut, Murder in Old Bombay. 1893: Newlyweds Captain Jim Agnihotri and Diana Framji are settling into their new home in Boston, Massachusetts, having fled the strict social rules of British Bombay. It's a different life than what they left behind, but theirs is no ordinary marriage: Jim, now a detective at the Dupree Agency, is teaching Diana the art of deduction he’s learned from his idol, Sherlock Holmes. Everyone is talking about the preparations for the World's Fair in Chicago: the grandeur, the speculation, the trickery. Captain Jim will experience it first-hand: he's being sent to Chicago to investigate the murder of a man named Thomas Grewe. As Jim probes the underbelly of Chicago’s docks, warehouses, and taverns, he discovers deep social unrest and some deadly ambitions. When Jim goes missing, young Diana must venture to Chicago's treacherous streets to learn what happened. But who can she trust, when a single misstep could mean disaster? Award-winning author Nev March mesmerized readers with her Edgar finalist debut, Murder in Old Bombay. Now, in Peril at the Exposition, she wields her craft against the glittering landscape of the Gilded Age with spectacular results.

William Byrd

William Byrd PDF Author: John Harley
Publisher: Routledge
ISBN: 135153694X
Category : Music
Languages : en
Pages : 332

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Book Description
This is the first comprehensive study of William Byrds life (1540-1623) and works to appear for sixty years, and fully takes into consideration recent scholarship. The biographical section includes many newly discovered facts about Byrd and his family, while in the chapters dealing with his music an attempt is made for the first time to outline the chronology of all his compositions. The book begins with a detailed account of Byrd's life, based on a completely fresh examination of original documents, which are quoted extensively. Several previously known documents have now been identified as being in Byrds hand, and some fresh holographs have been discovered. A number of questions such as his parentage and date of birth have been conclusively settled. The book continues with a survey of Byrds music which pays particular attention to its chronological development, and links it where possible to the events and background of his life. A series of appendices includes additional texts of important documents, and a summary catalogue of works. A bibliography and index complete the book. Besides musical illustrations there is a series of plates illustrating documents and places associated with Byrd.

The Masses and Motets of William Byrd

The Masses and Motets of William Byrd PDF Author: Joseph Kerman
Publisher: Univ of California Press
ISBN: 9780520040335
Category : Music
Languages : en
Pages : 362

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Book Description
In this, the first of a three-volume study of Byrd's complete output, under the general title The Music of William Byrd, the author essays a first full-scale historical and critical assessment of Byrd's sacred music to Latin words - one of the great glories of the Elizabethan Age. Each of the approximately 175 compositions is considered, at least briefly, with fuller appreciation accorded to such masterpieces as Emendemus in Melius, Tristitia et anxietas, Iusorum animae, Ave verum corpus, the lamentations and the three famous masses. There are more than sixty musical examples, some of considerable length. In critical prose that slights neither technicalities nor the intense emotional qualities of his subject matter, the author sheds fresh and often unexpected illumination on Byrd's musical rhetoric and on his powerful, endlessly inventive musical structures. Re-examining the known facts of Byrd's life in relation to the patronage and politics of the time, the author boldly argues that while the impetus behind Byrd's early motets was primarily traditionalist and technical, that behind his Cantiones sacrae motets of the 1580s was essentially political: they were covert laments and protests on behalf of the embattled recusant community.

Cambridge Yearbook of European Legal Studies, Vol 13, 2010-2011

Cambridge Yearbook of European Legal Studies, Vol 13, 2010-2011 PDF Author: Catherine Barnard
Publisher: Bloomsbury Publishing
ISBN: 184731869X
Category : Law
Languages : en
Pages : 337

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Book Description
The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.

The Technique of Byrd's Vocal Polyphony

The Technique of Byrd's Vocal Polyphony PDF Author: Herbert Kennedy Andrews
Publisher: London, Oxford U. P
ISBN:
Category : Byrd, William, 1542 or 3-1623
Languages : en
Pages : 328

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Book Description
To Byrd and his sixteenth-century contemporaries, technique was the means of expressing the composer's thought, but it was also an artistic achievement in itself, a vehicle exactly contrived for the delivery of its message, and an essential part of that message. With this in mind, the author analyses the major aspects of Byrd's technique, illustrating his discussion with numerous music examples. The comparisons which are inevitably made, at every stage, between Byrd's practice and that of his predecessors and contemporaries at home and abroad, make the book in an important sense a general survey of polyphonic vocal technique during the period. This will further enhance its value for students of the golden age of vocal polyphony.