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The White Rabbit is a fictional and anthropomorphic character in Lewis Carroll's 1865 book Alice's Adventures in Wonderland. He appears at the very beginning of the book, in chapter one, wearing a waistcoat, and muttering "Oh dear! Oh dear! I shall be too late!" Alice follows him down the rabbit hole into Wonderland. Alice encounters him again when he mistakes her for his housemaid Mary Ann and she becomes trapped in his house after growing too large. The Rabbit shows up again in the last few chapters, as a herald-like servant of the King and Queen of Hearts. In his article "Alice on the Stage", Carroll wrote, "And the White Rabbit, what of him? Was he framed on the 'Alice' lines, or meant as a contrast? As a contrast, distinctly. For her 'youth', 'audacity', 'vigour', and 'swift directness of purpose', read 'elderly', 'timid', 'feeble', and 'nervously shilly-shallying', and you will get something of what I meant him to be. I think the White Rabbit should wear spectacles. I'm sure his voice should quaver, and his knees quiver and his whole air suggest a total inability to say 'Boo' to a goose!" Overall, the White Rabbit seems to shift back and forth between pompous behaviour toward his underlings, such as his servants, and grovelling, obsequious behaviour toward his superiors, such as the Duchess, and the King and Queen of Hearts, in direct contrast to Alice, who is reasonably polite to everyone she meets. The White Rabbit's perennial unpunctuality is a nod to Oxford time, the tradition at Oxford (and especially Christ Church, where Carroll taught) of having events begin five minutes past the scheduled hour. Alice in Wonderland (1951 film) Disney's animated version of the Rabbit is perhaps best known for the little song he sings on his first appearance, "I'm late! I'm late! For a very important date! No time to say hello, goodbye! I'm late! I'm late! I'm late!". His initial panicky behaviour is presumably because he is late for the royal garden party where he is due to act as herald; this would be quite enough for him to lose his head to the touchy Queen.

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Lapin blanc

Le Lapin blanc est un personnage de fiction du livre Les Aventures d'Alice au pays des merveilles de Lewis Carroll. Il est l'un des personnages les plus célèbres de l'univers de cette histoire. Il apparaît au tout début du livre, dans le premier chapitre, portant un gilet bleu et une montre à gousset, et en répétant . Alice le poursuit jusqu'à tomber dans un terrier qui l'emmène au pays des Merveilles. Est nommé en l'honneur du personnage (17942) Lapinblanc, un astéroïde de la ceinture principale découvert en 1999.

Matrix (film)

Matrix ou La Matrice au Québec (The Matrix) est un film de science-fiction de type « cyberfilm » australo-américain écrit et réalisé par les Wachowski et sorti en 1999. Il dépeint un futur dystopique dans lequel la réalité perçue par la plupart des humains est une simulation virtuelle en se connectant à la « Matrice », créée par des machines douées d'intelligence, afin d'asservir les êtres humains, à leur insu, et de se servir de la chaleur et de l'activité électrique de leur corps comme source d'énergie.

The White Rabbit Time Synchronization Protocol for Synchrophasor Networks

Mario Paolone, Asja Derviskadic, Reza Razzaghi, Quentin Walger

Within the context of time dissemination techniques for power systems applications, the paper discusses the use of the White Rabbit (WR) protocol for synchrophasor networks. Specifically, the paper presents a Phasor Measurement Unit (PMU) integrating the WR technology and its experimental validation with a focus on the synchrophasor phase estimation in steady state conditions, by using a PMU calibrator generating the reference signals. We further compare the accuracy of the developed PMU with other state-of-the-art time synchronization technologies for PMUs, i.e., Global Positioning System (GPS) and Precision Time Protocol (PTP), demonstrating applicability of WR for PMU sensing networks.

2019

The White Rabbit Time Synchronization Protocol for Synchrophasor Networks

Mario Paolone, Asja Derviskadic, Reza Razzaghi, Quentin Walger

Within the context of time dissemination techniques for power systems applications, the paper discusses the use of the White Rabbit (WR) protocol for synchrophasor networks. Specifically, the paper presents a Phasor Measurement Unit (PMU) integrating the WR technology and its experimental validation with a focus on the synchrophasor phase estimation in steady state conditions, by using a PMU calibrator generating the reference signals. We further compare the accuracy of the developed PMU with other state-of-the-art time synchronization technologies for PMUs. i.e., Global Positioning System (GPS) and Precision Time Protocol (PTP), demonstrating applicability of WR for PMU sensing networks.

2018

SVD: Décomposition de la valeur singulaire MATH-212: Analyse numérique et optimisation

Couvre le concept de Décomposition de Valeur Singulaire (SVD) pour compresser l'information dans les matrices et les images.