1 |
Radiodétection des gerbes atmosphériques à l'observatoire Pierre Auger / Radiodetection of extensive air showers at the Pierre Auger ObservatoryLe Coz, Sandra 14 October 2014 (has links)
Les connaissances sur les rayons cosmiques d'ultra haute énergie (E>10^{18} eV) ont progressé durant la dernière décennie, en particulier grâce aux résultats remarquables de l'Observatoire Pierre Auger. La question de la composition du flux de rayons cosmiques à ces énergies reste cependant ouverte. Le projet EASIER (Extensive Air Shower Identification using Electron Radiometer) de détection radio des gerbes atmosphériques recherche de nouvelles observables liées à la nature du rayonnement cosmique primaire, complémentaires de celles déjà mise en oeuvre à l'Observatoire Pierre Auger. Ce dispositif est constitué d'un réseau d'antennes radio fonctionnant aux fréquences MHz et GHz et installées en mode esclave sur une soixantaine de détecteurs de particules du réseau de surface de l'Observatoire. Après étude de la réponse des détecteurs et analyse des données, les caractéristiques des signaux détectés aux fréquences MHz se sont révélées compatibles avec une origine géomagnétique de l'émission radio des gerbes. Aux fréquences GHz, seuls quelques signaux ont été détectés en coïncidence avec des gerbes atmosphériques. Un programme de simulation a été réalisé dans le but d'identifier l'origine de cette émission micro-ondes. Il inclut le développement de la gerbe dans l'atmosphère et différents mécanismes d'émission aux fréquences GHz : l'effet Cerenkov et le bremsstrahlung moléculaire. La propagation du rayonnement dans l'atmosphère et la réponse de l'antenne réceptrice sont également simulés, ce qui permet une comparaison directe des signaux détectés avec les signaux attendus. / The understanding on the ultra high cosmic rays (E>10^{18} eV) issue has been improved over the last decade, especially through the noteworthy results of the Pierre Auger Observatory. The composition of cosmic rays at those energies is still an open matter. The EASIER project (Extensive Air Shower Identification using Electron Radiometer) on radio detection of extensive air showers is looking for new observables related to the nature of primary cosmic rays, complementary to those already implemented at the Pierre Auger Observatory. This prototype consists of an array of MHz and GHz antennas, set up on a slave mode on about sixty tanks of the surface detector of the Observatory. Further to a study of the antenna response and a data analysis, the features of the detected signals at MHz frequencies have turned out to be compatible with a geomagnetic origin of the shower radio emission. At GHz frequencies, only a few signals have been detected in coincidence with extensive air showers. A simulation program has been created, aiming to identify the origin of this micro wave emission. It includes the air shower development in the atmosphere and different emission mechanisms at GHz frenquencies : the Cerenkov radiation and the molecular bremsstrahlung. The radiation propagation through the atmosphere and the receiving antenna response are simulated as well, allowing to directly compare the detected signals to the predicted ones.
|
2 |
Elever med Aspergers syndrom : Hur kan pedagoger arbeta för att underlätta för dessa elever? / Pupils with Aspergers syndrome : How can pedagogues work to make it easier for these pupils?Forsberg, Felicia January 2010 (has links)
<p>The purpose with my examination is to make a contribution to how, as a pedagogue, you can work to make it easier for pupils with Aspergers syndrome that are integrated in an “average” class. I will concentrate my work to these questions: how pedagogues can work to make it easier for pupils with Asperger syndrome that are integrated in an “average” class. If it affects the other pupils in the class when pupils with Asperger syndrome is integrated in the class and also if it affects the pedagogues work having these children integrated in their “average” class.I have decided to study research and other literature and also to do two interviews to find out how pedagogues can make it easier for children with the diagnosis Asperger syndrome. The pedagogues that I´ve interviewed has in different ways worked with pupils with Asperger syndrome. The first person works as a pedagogical instructor and the other one works as a teacher in a preschool-class. I compare the facts that I´ve found in research, literature and in the interviews to later be able to draw my own conclusions.The result of my examination shows that the facts that I got from the research and the literature broadly agree with the facts that I got from the interviews that I´ve done. The general conclusion of my work shows that pupils with Asperger syndrome need a clear and structured schooling. It´s important that the pedagogues proceed from the actual pupil when planning the schooling otherwise the pedagogue won´t be able to create the right opportunities for the pupil.</p>
|
3 |
Elever med Aspergers syndrom : Hur kan pedagoger arbeta för att underlätta för dessa elever? / Pupils with Aspergers syndrome : How can pedagogues work to make it easier for these pupils?Forsberg, Felicia January 2010 (has links)
The purpose with my examination is to make a contribution to how, as a pedagogue, you can work to make it easier for pupils with Aspergers syndrome that are integrated in an “average” class. I will concentrate my work to these questions: how pedagogues can work to make it easier for pupils with Asperger syndrome that are integrated in an “average” class. If it affects the other pupils in the class when pupils with Asperger syndrome is integrated in the class and also if it affects the pedagogues work having these children integrated in their “average” class.I have decided to study research and other literature and also to do two interviews to find out how pedagogues can make it easier for children with the diagnosis Asperger syndrome. The pedagogues that I´ve interviewed has in different ways worked with pupils with Asperger syndrome. The first person works as a pedagogical instructor and the other one works as a teacher in a preschool-class. I compare the facts that I´ve found in research, literature and in the interviews to later be able to draw my own conclusions.The result of my examination shows that the facts that I got from the research and the literature broadly agree with the facts that I got from the interviews that I´ve done. The general conclusion of my work shows that pupils with Asperger syndrome need a clear and structured schooling. It´s important that the pedagogues proceed from the actual pupil when planning the schooling otherwise the pedagogue won´t be able to create the right opportunities for the pupil.
|
4 |
Planos de preparação a aposentadoria e os fatores relevantes a satisfação dos aposentados: um estudo de casos brasileirosVezneyan, Natalie Catherine Dividino Boch 24 April 2002 (has links)
Made available in DSpace on 2010-04-20T20:14:45Z (GMT). No. of bitstreams: 0
Previous issue date: 2002-04-24T00:00:00Z / Uma vez definidos os conceitos ali fundamentais e tê-los analisado todo investigação bibliográfica detalhada, o pesquisador identificou fatores relevantes na adaptação a aposentadoria, como por anteriores estudos estrangeiros. contribuição do programa de aposentadoria ajuste aos aposentados e satisfação foi determinado. Os estudos de caso foram realizados em empresas localizadas em São Paulo, Brasil, a fim de verificar o fluxo alinhados programas de aposentadoria locais estão com as teorias discutidas e tendências. L = descobertas apoio financeiro, fatores biológicos, sociais e psicológicos, como maior determinantes da adaptação aposentados mais fácil de aposentadoria. / Once defined all fundamental concepts and having them analyzed throughout detailed literature investigation, the researcher has identified relevant factors in retirement adaptation, as per prior foreign studies. Retirement Program's contribution to retirees' adjustment and satisfaction was determined. Case studies were conducted in companies located in São Paulo, Brazil, in order to verify flow aligned local Retirement Programs are with discussed theories and trends.
|
Page generated in 0.0254 seconds