Weighted norm inequalities for polynomial expansions associated to some measures with mass points

Fourier series in orthogonal polynomials with respect to a measure $\nu$ on $[-1,1]$ are studied when $\nu$ is a linear combination of a generalized Jacobi weight and finitely many Dirac deltas in $[-1,1]$. We prove some weighted norm inequalities for the partial sum operators $S_n$, their maximal operator $S^*$ and the commutator $[M_b, S_n]$, where $M_b$ denotes the operator of pointwise multiplication by b \in \BMO. We also prove some norm inequalities for $S_n$ when $\nu$ is a sum of a Laguerre weight on $\R^+$ and a positive mass on $0$

Mística e Paidéia : O Pseudo-Dionísio Areopagita

O autor que se apresenta como Dionísio Areopagita, o ateniense convertido por São Paulo no Areópago (Atos XVII, 16-34) foi provavelmente um monge sírio que escreveu no fim do século V. Este artigo, ao discutir as tentativas contemporâneos de descobrir sua identidade e a influência que exerceu sobre o pensamento posterior, interpreta sua obra como uma tentativa de assimilação da filosofia e paidéia grega pelo cristianismo, representando um momento importante do processo simbolizado pela viagem de São Paulo à Atenas.The author who presents himself as Dionysius the Areopagite, the converted by Saint Paul on the Areopagus was probably a syrian monk who wrote in the late V century. This article, dicussing the contemporany attempts to find his identity and the influence on the posterior thought, interprets his writings as an attempt to assimilate the greek philosophy and paideia by christianity, representing an important moment in the process symbolized by the Saint Paul's journey to Athens

Mistic and Paideia : Dionysius the Pseudo Areopagite

The author who presents himself as Dionysius the Areopagite, the converted by Saint Paul on the Areopagus was probably a syrian monk who wrote in the late V century. This article, dicussing the contemporany attempts to find his identity and the influence on the posterior thought, interprets his writings as an attempt to assimilate the greek philosophy and paideia by christianity, representing an important moment in the process symbolized by the Saint Paul's journey to Athens

Academic Medicine: Vice Chairs’ for Education Perceptions of Departmental

Department chairs are responding to external pressures by legitimizing new educational leadership positions, like the vice chair for education (VCE), to keep pace with the complex medical education climate. Departmental culture has implications on VCE success and retention. In a cross-sectional qualitative study we examine departmental culture from the perspective of 17 VCEs in medicine. VCEs describe current behaviors and values of their departmental cultures via web survey as a primary source. They also characterize the ideal culture they believe would help them thrive in the position. Findings revealed that most found satisfaction with their role, but sought collaborative cultures

Maternal Geohelminth Infections Are Associated with an Increased Susceptibility to Geohelminth Infection in Children: A Case-Control Study

Background: Children of mothers infected with soil-transmitted helminths (STH) may have an increased susceptibility to STH infection. Methods and Findings: We did a case-control study nested in a birth cohort in Ecuador. Data from 1,004 children aged 7 months to 3 years were analyzed. Cases were defined as children with Ascaris lumbricoides and/or Trichuris trichiura, controls without. Exposure was defined as maternal infection with A. lumbricoides and/or T. trichiura, detected during the third trimester of pregnancy. The analysis was restricted to households with a documented infection to control for infection risk. Children of mothers with STH infections had a greater risk of infection compared to children of uninfected mothers (adjusted OR 2.61, 95% CI: 1.88–3.63, p,0.001). This effect was particularly strong in children of mothers with both STH infections (adjusted OR: 5.91, 95% CI: 3.55–9.81, p,0.001). Newborns of infected mothers had greater levels of plasma IL-10 than those of uninfected mothers (p = 0.033), and there was evidence that cord blood IL-10 was increased among newborns who became infected later in childhood (p = 0.060). Conclusion: Our data suggest that maternal STH infections increase susceptibility to infection during early childhood, an effect that was associated with elevated IL-10 in cord plasma

Modelling the post-failure stage of rainfall-induced landslides of the flow type

The geomechanical modeling of failure and post failure stages of rainfall induced shallow landslides represents a fundamental issue to properly assess the failure conditions and recognize the potential for long travel distances of the failed soil masses

Landau's necessary density conditions for the Hankel transform

We will prove an analogue of Landau's necessary conditions [Necessary density conditions for sampling and interpolation of certain entire functions, Acta Math. 117 (1967).] for spaces of functions whose Hankel transform is supported in a measurable subset S of the positive semi-axis. As a special case, necessary density conditions for the existence of Fourier-Bessel frames are obtained.Comment: To appear on J. Funct. Analysi

Esclavos rebeldes y cimarrones [Recurso electrónico]

Esclavitud y rebeldía en América / Javier Laviña. Yanga y el cimarronaje en la Nueva España / Guadalupe Castañón González. Palenques : refugios cimarrones de africanía en América / Nina S. de Friedemann. El pueblo garífuna, una nación libertaria / Francesca Gargall