Analysis of Balmer Profiles of early type stars

The spectral energy distribution (SED) of recent star formation regions is dominated by the more massive and early stars (O and B types). These stars show large and very significant absorption features, the most prominent being the recombination lines of H, HeI and HeII. In particular, the shape of their profiles are very dependent on the luminosity of the star. We have explored the potential use of high resolution profiles to discriminate between different luminosity classes and spectral types, by using profiles of the He and Balmer lines. We have calculated growth curves for each of the lines and their dependence on gravity and effective temperature. We show some of these theoretical growth curves and our preliminary conclusions are analyzed and discussed.Comment: 1 pag, Contribution to the conference "Cosmic Evolution and Galaxy Formation: Structure, Interactions and Feedback", Nov. 1999 (Puebla, Mexico), to be published in ASP. Conf. Series, Eds. J. Franco, E. Terlevich. O. Lopez-Cruz, I. Aretxag

Unimodular Trees versus Einstein Trees

The maximally helicity violating (MHV) tree level scattering amplitudes involving three, four or five gravitons are worked out in Unimodular Gravity. They are found to coincide with the corresponding amplitudes in General Relativity. This a remarkable result, insofar as both the propagators and the vertices are quite different in both theories.Comment: 20 pages, 5 figure

PREDICTING ORGANIC MARKET DEVELOPMENT WITH SPATIAL ANALYSIS OF EXISTING INDUSTRY INFORMATION

We test the likelihood of expansion for six market sectors based on the similarities between counties with and counties without organic markets. Results indicate that sales projections are overstated. Growth imbalance will continue to favor the West and North Central regions over the South and Northeast.Marketing,

La mort de "Mobilien" ou l'innovation au risque de la concertation

Consultable sur Internet : http://www.annales.org/gc/2007/gc88-06-07/gonzalez.pdfNational audienceCet article aurait pu s'intituler : " Leçon à l'usage de ceux qui veulent faire passer des idées publiques innovantes ". C'est un véritable cours de stratégie que nous donne l'auteur dans sa présentation du succès puis de l'échec de Mobilien, projet qui consistait à renforcer le réseau de bus en Ile-de-France : s'imposer dans un comité qui se révèlera essentiel, au nom d'un intérêt général supérieur, profiter d'un texte initial ambigu, coller à la vision du monde émergente : " la mobilité durable ". Oui, mais voilà, à ne pas vouloir intégrer des arguments des opposants (favorables à la voiture individuelle), à n'avoir pas fait participer des acteurs-clés (les élus, les techniciens), mais surtout à ne pas s'être appuyé sur un pilotage de projet fort pour ne pas renoncer à certains objectifs de base, ce fut un échec. Innovation et concertation ne vont pas forcément ensemble, gouvernance et pilotage non plus : il faut savoir renoncer au consensus, mais dans le cadre d'une " démocratie représentative "

Resilience among LGBTQIA+ youth in out-of-home care:a multidimensional exploration of their resilience resources

LGBTQIA+ youth are overrepresented in out-of-home care. They face a double burden; are exposed to stressors related to their LGBTQIA+ identity, but also confront the challenges of being removed from their families and placed in the care of the state. Traditionally, research has focused on exploring the often negative experiences that these youth go through within the out-of-home care system, neglecting the study of their resilience. In his dissertation, Rodrigo Gonzalez sought to fill this knowledge gap by investigating the main factors contributing to the resilience among LGBTQIA+ youth in out-of-home care. Resilience was approached from a multidimensional perspective, including individual, socio-relational, and community-systemic resilience resources. A first study mapped the current international knowledge on resilience among LGBTQIA+ youth in out-of-home care. The results revealed important knowledge gaps, such as the lack of studies on this topic outside the US. In a series of following studies, Rodrigo analyzed the resilience of LGBTQIA+ youth in out-of-home care in the Netherlands using data from in-depth interviews with youth and their care professionals. The studies showed the myriad of resilience resources at different levels: the individual (e.g, self relying strategies such as fighting, resisting and scaping), socio-relational (e.g, relationships of care and love), and community-systemic (e.g, care agencies’ LGBTQIA+ affirming practices and policies). The practice field can make use of these results to promote the resilience of LGBTQIA+ youth in out-of-home care by implementing LGBTQIA+ affirmative interventions s and policies