Jean Epstein place l’inversion temporelle au cœur de la révolution cinématographique. Le cinéma est la seule expérience qui nous donne non seulement le temps mais aussi l’inversion temporelle comme une perception. Il s’agit de reprendre et de continuer la pensée de Epstein par une redéfinition du temps propre au cinéma à partir de la notion d’inversion temporelle conçue de la façon la plus transversale : de l’inversion pelliculaire à la rétrotemporalité narrative, au temps de la pensée. On convoque la relecture de grands textes classiques, l’analyse de films et de vidéos expérimentales, la musique, des exemples littéraires.Les points d’ancrage théoriques sont le mythe rétrotemporel du Politique de Platon, la conception du temps irréversible de Vladimir Jankélévitch, les écrits théorico-poétiques de Jean-Louis Schefer, la notion d’Aiôn chez Gilles Deleuze, la psychanalyse issue de Jacques Lacan.On aborde d’abord le cinéma comme un contre-temps inséparable de renversements philosophiques, esthétiques, moraux, politiques. En partant de Platon, on explore ensuite les différentes formes de retours dans le passé, de la rétrotemporalité narrative aux voyages dans le temps. Puis on approche les images sans causes, avec les aberrations burlesques ou oniriques, l’unité des temps contraires, l’inversion temporelle qui se spatialise. Enfin, l’inversion temporelle du cinéma non seulement nous montre que penser c’est régresser dans le temps, mais concerne le dur mystère d’une pensée à rebours. La réversibilité de l’acte intellectuel est le seuil ultime où apparaissent les idées, sans envers et sans endroit. / Jean Epstein places backwards time in the heart of the revolution of film. The cinema is the only experience that delivers time as a perception to us, and backwards time too. The purpose is to follow and continue Epstein’s thought ; we elaborate a redefinition of the proper time of cinema intimately linked to the concept of backwards time in its various meanings : i.e. from the film backwards time to the narrative retrotemporality towards the thought time. We help us with famous classical texts, films and experimental video analysis, music, litterary examples. The theorical anchorage points are : the backwards time myth in Plato’s Politic, Vladimir Jankélévitch’s conception of irreversible time, Jean-Louis Schefer’s theorical-poetical works, GillesDeleuze Aiôn’s notion, and Jacques Lacan’s psychoanalytical studies. We first consider the cinema as a counter-time that can not be detached from philosophical, aesthetical, moral, and political reversal. Examining Plato’s theory we then explore the different forms of retrieving the Past, from the narrative retrotemporality to the time travels. Then we analyse the without causes pictures with the comical, onirical aberrations, the contrary times unity, the temporal inversion which spatialises. At last, the cinema’s backwards time not only shows us that thinking is regressing in time, but concerns the hard mystery of an inverse thought. The reversibility of the intellectual act is the ultimate threshold where the ideas appear, without a wrong or a right side.

Diss. (sammanfattning) Stockholm : Karolinska institutet, 2006. / Härtill 5 uppsatser.

Made available in DSpace on 2016-12-12T17:38:37Z (GMT). No. of bitstreams: 1 ILTON ANCELMO PEREIRA JUNIOR.pdf: 6854626 bytes, checksum: 8fdf9667f4e840b4dc298f1e9605bf2d (MD5) Previous issue date: 2011-02-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This master thesis introduces a study about the influence of frequency variation induced in the magnetic properties of materials. Experiments are accomplished in the Epstein frame or Epstein square, the measurements are being acquired through a data acquisition system PC-based, which is handled through a software developed in LabVIEW. As results, we have the magnetization curve, hysteresis loop and specific losses for several preset frequencies, and the harmonic distortion evaluation in current and voltage signals during the trial. The end of the essay presents a methodology able to accomplish the harmonics cancellation generated by the steel saturation, applying a voltage source having adjustable harmonic voltages. / Esta dissertação apresenta um estudo sobre a influência da variação da frequência nas propriedades magnéticas dos materiais. Os ensaios são realizados em quadro de Epstein, sendo as medições obtidas através de um sistema de aquisição de dados baseado em PC, o qual é controlado por um software desenvolvido em LabVIEW. Como resultados têm-se a curva de magnetização, a curva de histerese e as perdas específicas para diversas frequências pré-selecionadas, sendo avaliadas as distorções harmônicas de tensão e de corrente, durante os ensaios. Ao final é apresentada uma metodologia capaz de realizar o cancelamento das harmônicas geradas pela saturação do aço, através de uma fonte de tensão com ajuste de harmônicos.

published_or_final_version / Microbiology / Doctoral / Doctor of Philosophy

published_or_final_version / Anatomy / Doctoral / Doctor of Philosophy

published_or_final_version / Pathology / Doctoral / Doctor of Philosophy

published_or_final_version / Anatomy / Doctoral / Doctor of Philosophy

published_or_final_version / Microbiology / Doctoral / Doctor of Philosophy

published_or_final_version / abstract / Microbiology / Master / Master of Philosophy

published_or_final_version / abstract / Surgery / Master / Master of Philosophy