On the consistent solution of the gap--equation for spontaneously broken λΦ4\lambda \Phi^4-theory

We present a self--consistent solution of the finite temperature gap--equation for $\lambda \Phi^4$ theory beyond the Hartree-Fock approximation using a composite operator effective action. We find that in a spontaneously broken theory not only the so--called daisy and superdaisy graphs contribute to the resummed mass, but also resummed non--local diagrams are of the same order, thus altering the effective mass for small values of the latter.Comment: 15 pages of revtex + 3 uuencoded postscript figures, ENSLAPP A-488/9

Construction of an instrument for the evaluation of critical thinking: previous considerations

Existem diversos instrumentos validados para a avalia??o do pensamento cr?tico, contudo os instrumentos s?o amplos, longos e indispon?veis para aplica??o em larga escala, pelo menos em l?ngua portuguesa. Este trabalho objetiva apresentar o primeiro momento de elabora??o de um instrumento de avalia??o do pensamento cr?tico, com alguma facilidade de aplica??o e que abarque as habilidades essenciais, para estudantes do ensino superior. A principal conclus?o ? que este processo ? moroso e dif?cil, sendo certo que a relev?ncia da avalia??o do pensamento cr?tico na popula??o universit?ria justifica a prossecu??o do projeto.AF10-A514-BE72 | Luciana Pereira de BritoN/

Risk of Diabetes Among Young Adults Born Preterm in Sweden

OBJECTIVE-Previous studies have suggested that preterm birth is associated with diabetes later in life. These studies have shown inconsistent results for late preterm births and have had various limitations, including the inability to evaluate diabetic outpatients or to estimate risk across the full range of gestational ages. Our objective was to determine whether preterm birth is associated with diabetes medication prescription in a national cohort of young adults. RESEARCH DESIGN AND METHODS-This was a national cohort study of 630,090 infants born in Sweden from 1973 through 1979 (including 27,953 born preterm, gestational age < 37 weeks), followed for diabetes medication prescription in 2005-2009 (ages 25.5-37.0 years). Medication data were obtained from all outpatient and inpatient pharmacies throughout Sweden. RESULTS-Individuals born preterm, including those born late preterm (gestational age 35-36 weeks), had modestly increased odds ratios (ORs) for diabetes medication prescription relative to those born full term, after adjusting for fetal growth and other potential confounders. Insulin and/or oral diabetes medications were prescribed to 1.5% of individuals born preterm compared with 1.2% of those born full term (adjusted OR 1.13 [95% CI 1.02-1.26]). Insulin without oral diabetes medications was prescribed to 1.0% of individuals born preterm compared with 0.8% of those born full term (1.22 [1.08-1.39]). CONCLUSIONS-Preterm birth, including late preterm birth, is associated with a modestly increased risk of diabetes in young Swedish adults. These findings have important public health implications given the increasing number of preterm births and the large disease burden of diabetes, particularly when diagnosed in young adulthood

Regularity Properties and Pathologies of Position-Space Renormalization-Group Transformations

We reconsider the conceptual foundations of the renormalization-group (RG) formalism, and prove some rigorous theorems on the regularity properties and possible pathologies of the RG map. Regarding regularity, we show that the RG map, defined on a suitable space of interactions (= formal Hamiltonians), is always single-valued and Lipschitz continuous on its domain of definition. This rules out a recently proposed scenario for the RG description of first-order phase transitions. On the pathological side, we make rigorous some arguments of Griffiths, Pearce and Israel, and prove in several cases that the renormalized measure is not a Gibbs measure for any reasonable interaction. This means that the RG map is ill-defined, and that the conventional RG description of first-order phase transitions is not universally valid. For decimation or Kadanoff transformations applied to the Ising model in dimension $d \ge 3$, these pathologies occur in a full neighborhood $\{ \beta > \beta_0 ,\, |h| < \epsilon(\beta) \}$ of the low-temperature part of the first-order phase-transition surface. For block-averaging transformations applied to the Ising model in dimension $d \ge 2$, the pathologies occur at low temperatures for arbitrary magnetic-field strength. Pathologies may also occur in the critical region for Ising models in dimension $d \ge 4$. We discuss in detail the distinction between Gibbsian and non-Gibbsian measures, and give a rather complete catalogue of the known examples. Finally, we discuss the heuristic and numerical evidence on RG pathologies in the light of our rigorous theorems.Comment: 273 pages including 14 figures, Postscript, See also ftp.scri.fsu.edu:hep-lat/papers/9210/9210032.ps.

Da adjudica??o no processo civil brasileiro

Made available in DSpace on 2015-04-14T14:33:18Z (GMT). No. of bitstreams: 1 399421.pdf: 125852 bytes, checksum: 2e1efa931eb5c27c31e154cd38241ca1 (MD5) Previous issue date: 2007-12-20A presente disserta??o versa sobre o instituto da abjudica??o no Processo Civil Brasileiro. Trata de um dos instrumentos coercitivos do Processo de Execu??o que possui como finalidade a satisfa??o da d?vida inadimplida do executado em favor do exeq?ente. O estudo tem in?cio no ordenamento jur?dico portugu?s, passando pela legisla??o do direito processual brasileiro at? as recentes altera??es no procedimento execut?rio de t?tulos extrajudiciais, promovidas com o advento da Lei 11.382/06, em face dessas modifica??es, objetivam uma melhor presta??o jurisdicional. A pesquisa atravessa o campo do direito comparado, apresentando o procedimento da abjudica??o for?ada, vigente nos pa?ses europeus, entre eles Portugal, Espanha, It?lia e Fran?a