Scattering theory for Dirac fields inside a Reissner-Nordstr\"om-type black hole

We show asymptotic completeness for the massive charged Dirac equation between the black hole and Cauchy horizons of a sub-extremal ((Anti-) De Sitter) Reissner-Nordstr\"om black hole.Comment: 18 pages, 1 figur

Food consumption of Syrian immigrants in Malmö, Sweden

This thesis aims to study the food consumption of Syrian immigrants in Malmö, Sweden, and their habits regarding food. The first goal is to investigate why they eat food from their homeland, as part of a wider perspective of food and its effects on landscape in the city. The research explored a variety of factors that influence Syrian immigrant’s choices of his/her food. The study depended on qualitative research methodology, based on 5 in-depth, semi-structured interviews with Syrian migrants. This study analysed the economic, social, religious, and other factors that influence their food consumption habits and the foodscape and landscape character of Malmö. The study concluded that there were many factors, that played a role for the Syrian interviewees that contributed to determine their cultural choices and consumption patterns. They gave me answers about the food habits of the Syrians in Malmö. Although, the study's findings discover that Syrian migrants' food identities play a significant role in shaping the character of the foodscape and landscape of Malmö. Finally, the results provide valuable insights to study the importance of the impact of food on the urban landscape and the need to consider the dietary identities of different immigrant groups when analysing the nature of landscapes. Qualitative research methodology was used in this study, but my results may not be considered generalizable to other contexts

Association between body mass index and mental health among Scottish adult population: a cross-sectional study of 37,272 participants

<b>Background:</b> The evidence is conflicting as to whether body mass index (BMI) is associated with mental health and, if so, to what extent it varies by sex and age. We studied mental health across the full spectrum of BMI among the general population, and conducted subgroup analyses by sex and age.<p></p> <b>Method:</b> We undertook a cross-sectional study of a representative sample of the Scottish adult population. The Scottish Health Survey provided data on mental health, measured by the General Health Questionnaire-12 (GHQ), BMI, demographic and life-style information. Good mental health was defined as a GHQ score <4, and poor mental health as a GHQ score ≥4. Logistic regression models were applied. Results Of the 37 272 participants, 5739 (15.4%) had poor mental health. Overall, overweight participants had better mental health than the normal-weight group [adjusted odds ratio (OR) 0.93, 95% confidence interval (CI) 0.87–0.99, p = 0.049], and individuals who were underweight, class II or class III obese had poorer mental health (class III obese group: adjusted OR 1.26, 95% CI 1.05–1.51, p = 0.013). There were significant interactions of BMI with sex (p = 0.013) and with age (p < 0.001). Being overweight was associated with significantly better mental health in middle-aged men only. In contrast, being underweight at all ages or obese at a young age was associated with significantly poorer mental health in women only.<p></p> <b>Conclusions:</b> The adverse associations between adiposity and mental health are specific to women. Underweight women and young women who are obese have poorer mental health. In contrast, middle-aged overweight men have better mental health.<p></p&gt

Evaluation de la faille alimentaire en algerie par un modele economico demographique?

La «faille alimentaire» est un concept assez proche de celui de «dépendance alimentaire», cependant, si le second terme renvoie plus à une idéologie, le premier se rapporte à une estimation en valeur de la dépendance alimentaire d’un pays. Aussi, l’appréciation de la faille et plus encore le suivi de son évolution nécessite des calculs astreignants. De plus elle est souvent sujette à des erreurs d’interprétations. Dans cette étude, nous avons procédé à une approche basée en partie sur un modèle de Louis Malassis, qui permettrait entre autres, d’évaluer les effets des politiques agricoles sur la sécurité alimentaire. Enfin les résultats auxquels nous avons abouti nous autorisent à conclure qu’il est inapproprié de quantifier la faille en termes de « valeur » parce que d’une part les variations des taux de change et des prix des denrées alimentaires conduisent à des conclusions erronées. D’autre part, les politiques agricoles, entreprises en Algérie et qui visent essentiellement le côté «offre», n’ont pas réussies à réduire la faille (bien au contraire).Mots clés: Autosuffisance, Dépendance alimentaire, Modèle de Malassis, Faille alimentaire, Politiques agricoles.Codes Jel : C51, Q11, Q18