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ActuaLitté

Polars & Thrillers

La fille d'avant

Après un drame éprouvant, Jane cherche à tourner la page. Lorsqu'elle découvre le One Folgate Street, elle est conquise par cette maison ultra moderne, chef d'oeuvre de l'architecture minimaliste, parfaite. Mais pour y vivre, il faut se plier aux règles draconiennes imposées par son architecte, Edward Monkford, aussi mystérieux que séduisant. Parmi celles-ci : répondre régulièrement à des questionnaires déconcertants et intrusifs. Peu à peu, Jane acquiert une inquiétante certitude : la maison est pensée pour transformer celui qui y vit. Or elle apprend bientôt qu'Emma, la locataire qui l'a précédée et qui lui ressemble étrangement, y a trouvé une fin tragique.
Alors qu'elle tente de démêler le vrai du faux, Jane s'engage sur la même pente, fait les mêmes choix, croise les mêmes personnes... et vit dans la même terreur que la fille d'avant.

03/2017

ActuaLitté

geopolitique politique

La nouvelle guerre des étoiles ; idées reçues sur la défense antimissiles

Once associated with the Cold War and with the Reagan administration’s “Star Wars” project, missile defence has now taken on a fresh lease of life. In response to an actual or perceived threat by States and public opinion, it has actually become one of the key topics in redefining the great strategic balances. To a large extent, however, its major technological, financial and military implications are still a mystery. It is true that this is still a difficult subject for a non-specialist public, very often coming down to grotesque misconceptions mixing ballistic missiles and the nuclear threat, pointing the finger at Iran, Syria and North Korea, not forgetting China, Russia, Israel and India, and the role of the United States, etc. Here the authors offer an educational work intended for the wider public, to reveal the technical, operational and strategic complexity of missile defence.

ActuaLitté

Non classé

Stars & Stellars evolution

The diverse forms that stars assume in the course of their lives can all be derived from the initial conditions: the mass and the original chemical composition. In this textbook Stars and Stellar Evolution the basic concepts of stellar structure and the main roads of stellar evolution are described. First, the observable parameters are presented, which are based on the radiation emerging from a stellar atmosphere. Then the basic physics is described, such as the physics of gases, radiation transport, and nuclear processes, followed by essential aspects of modelling the structure of stars. After a chapter on star formation, the various steps in the evolution of stars are presented. This leads us to brown dwarfs, to the way a star changes into the red-giant state and numerous other stages of evolution and ultimately to the stellar ashes such as white dwarfs, supernovae and neutron stars. Stellar winds, stellar rotation and convection all influence the way a star evolves. The evolution of binary stars is included by using several canonical examples in which interactive processes lead to X-ray binaries and supernovae of type Ia. Finally, the consequences of the study of stellar evolution are tied to observed mass and luminosity functions and to the overall evolution of matter in the universe. The authors aim at reaching an understanding of stars and their evolution by both graduate students and astronomers who are not themselves investigating stars. To that end, numerous graphs and sketches, among which the Hertzsprung-Russell diagram is the dominant one, help trace the ways of stellar evolution. Ample references to specialised review articles as well as to relevant research papers are included.

ActuaLitté

sciences appliquees astronomie, astrophysique

Stars and stellar evolution

The diverse forms that stars assume in the course of their lives can all be derived from the initial conditions: the mass and the original chemical composition. In this textbook Stars and Stellar Evolution the basic concepts of stellar structure and the main roads of stellar evolution are described. First, the observable parameters are presented, which are based on the radiation emerging from a stellar atmosphere. Then the basic physics is described, such as the physics of gases, radiation transport, and nuclear processes, followed by essential aspects of modelling the structure of stars. After a chapter on star formation, the various steps in the evolution of stars are presented. This leads us to brown dwarfs, to the way a star changes into the red-giant state and numerous other stages of evolution and ultimately to the stellar ashes such as white dwarfs, supernovae and neutron stars. Stellar winds, stellar rotation and convection all influence the way a star evolves. The evolution of binary stars is included by using several canonical examples in which interactive processes lead to X-ray binaries and supernovae of type Ia. Finally, the consequences of the study of stellar evolution are tied to observed mass and luminosity functions and to the overall evolution of matter in the universe. The authors aim at reaching an understanding of stars and their evolution by both graduate students and astronomers who are not themselves investigating stars. To that end, numerous graphs and sketches, among which the Hertzsprung-Russell diagram is the dominant one, help trace the ways of stellar evolution. Ample references to specialised review articles as well as to relevant research papers are included.

02/2009

ActuaLitté

sciences appliquees astronomie, astrophysique

Stars and stellar evolution

The diverse forms that stars assume in the course of their lives can all be derived from the initial conditions: the mass and the original chemical composition. In this textbook Stars and Stellar Evolution the basic concepts of stellar structure and the main roads of stellar evolution are described. First, the observable parameters are presented, which are based on the radiation emerging from a stellar atmosphere. Then the basic physics is described, such as the physics of gases, radiation transport, and nuclear processes, followed by essential aspects of modelling the structure of stars. After a chapter on star formation, the various steps in the evolution of stars are presented. This leads us to brown dwarfs, to the way a star changes into the red-giant state and numerous other stages of evolution and ultimately to the stellar ashes such as white dwarfs, supernovae and neutron stars. Stellar winds, stellar rotation and convection all influence the way a star evolves. The evolution of binary stars is included by using several canonical examples in which interactive processes lead to X-ray binaries and supernovae of type Ia. Finally, the consequences of the study of stellar evolution are tied to observed mass and luminosity functions and to the overall evolution of matter in the universe. The authors aim at reaching an understanding of stars and their evolution by both graduate students and astronomers who are not themselves investigating stars. To that end, numerous graphs and sketches, among which the Hertzsprung-Russell diagram is the dominant one, help trace the ways of stellar evolution. Ample references to specialised review articles as well as to relevant research papers are included.

02/2009

ActuaLitté

poésie

Eugene Oneguine

"En pleine guerre civile, sachant lui-même qu'il n'avait plus que quelques mois à vivre, Alexandre Blok, le plus grand poète symboliste russe, disait dans un dernier hommage à Pouchkine : «Notre mémoire conserve depuis l'enfance un nom joyeux : Pouchkine. Ce nom, ce son emplit de nombreux jours de notre vie. Les sombres noms des empereurs, des chefs de guerre, des inventeurs d'armes de destruction, des bourreaux et des martyrs de la vie. Et, à côté d'eux, ce nom léger : Pouchkine.»
Le plus célèbre roman de la littérature russe, et qui a produit un chef-d'oeuvre de l'opéra, était d'abord un poème, en strophes rimées. L'auteur y a mis sa vie - et sa mort. L'héroïne, Tatiana, tombe amoureuse d'un héros byronien, qui tue en duel le fiancé de la soeur de celle-ci. Les années passent, Onéguine revient, découvre qu'il aime passionnément Tatiana, maintenant mariée ; elle l'aime aussi ; que choisira-t-elle ? "Et le bonheur était si proche, si possible" chante Pouchkine. Un jeune homme qui s'ennuie, la plus touchante des jeunes filles, un poète de dix-sept ans, un vieux mari, des créatures de rêve. C'est le roman des rencontres manquées, des amours perdues, des remords sanglants. C'est aussi, comme amours perdues, des remords sanglants. C'est aussi, comme dit Nabokov, "une des oeuvres les plus brillantes jamais composées, un classique international aussi grand que Hamlet, ou Moby Dick". Cette traduction, entièrement nouvelle et remarquable d'aisance, reste fidèle au rythme de l'original, à sa "langue de diamant", à sa miraculeuse limpidité.

09/2005

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