A qualitative study of medical student socialization in Malawi\'s College of Medicine: Preclinical training and identity

In a previous report we addressed the socialization of Malawian medical students during the years of basic science training. Here we turn to the heavily clinical training of the final three years of medical school. Malawi Medical Journal Biology Vol. 19 (2) 2007: pp. 68-7

On the Dirichlet problem in elasticity for a domain exterior to an arc

AbstractWe consider here a Dirichlet problem for the two-dimensional linear elasticity equations in the domain exterior to an open arc in the plane. It is shown that the problem can be reduced to a system of boundary integral equations with the unknown density function being the jump of stresses across the arc. Existence, uniqueness as well as regularity results for the solution to the boundary integral equations are established in appropriate Sobolev spaces. In particular, asymptotic expansions concerning the singular behavior for the solution near the tips of the arc are obtained. By adding special singular elements to the regular splines as test and trial functions, an augmented Galerkin procedure is used for the corresponding boundary integral equations to obtain a quasi-optimal rate of convergence for the approximate solutions

Reação de acessos de feijoeiro comum, coletados no litoral médio e sul do Rio Grande do Sul, ao crestamento bacteriano comum, murcha-de-curtobacterium e antracnose.

Acessos de feijoeiro comum, oriundos de coleta realizada no litoral médio e sul do Rio Grande do Sul, foram testados para reação ao crestamento bacteriano comum, murcha-de-curtobacterium e para três patótipos de Colletotrichum lindemuthianum. Nenhum acesso teve reação de resistência ao crestamento bacteriano comum e à murcha-de-curtobacterium. Seis acessos tiveram reação de resistência conjunta aos patótipos de C. lindemuthianum

Obtenção de famílias com resistência conjunta ao crestamento bacteriano comum e à murcha-de-curtobacterium.

Utilizando como genitores doadores linhagens e acessos de feijoeiro comum (Phaseolus vulgaris) com resistência ao crestamento bacteriano comum e à murcha-de-curtobacterium, e como genitores recorrentes linhagens elites foram realizados retrocruzamentos com o objetivo de obter famílias com resistência conjunta aos dois patógenos

Teste de patogenicidade de seis isolados de Curtobacterium flaccumfaciens pv. flaccumfaciens nas cultivares Ouro Branco, BRS Esplendor e CNFP 10132.

O objetivo deste trabalho foi verificar a patogenicidade de seis isolados por inoculação em três cultivares: Ouro Branco, BRS Esplendor e CNFP 10132

On kernel engineering via Paley–Wiener

A radial basis function approximation takes the form $$s(x)=\sum_{k=1}^na_k\phi(x-b_k),\quad x\in {\mathbb{R}}^d,$$ where the coefficients a 1,…,a n are real numbers, the centres b 1,…,b n are distinct points in ℝ d , and the function φ:ℝ d →ℝ is radially symmetric. Such functions are highly useful in practice and enjoy many beautiful theoretical properties. In particular, much work has been devoted to the polyharmonic radial basis functions, for which φ is the fundamental solution of some iterate of the Laplacian. In this note, we consider the construction of a rotation-invariant signed (Borel) measure μ for which the convolution ψ=μ φ is a function of compact support, and when φ is polyharmonic. The novelty of this construction is its use of the Paley–Wiener theorem to identify compact support via analysis of the Fourier transform of the new kernel ψ, so providing a new form of kernel engineering

Numerical Ricci-flat metrics on K3

We develop numerical algorithms for solving the Einstein equation on Calabi-Yau manifolds at arbitrary values of their complex structure and Kahler parameters. We show that Kahler geometry can be exploited for significant gains in computational efficiency. As a proof of principle, we apply our methods to a one-parameter family of K3 surfaces constructed as blow-ups of the T^4/Z_2 orbifold with many discrete symmetries. High-resolution metrics may be obtained on a time scale of days using a desktop computer. We compute various geometric and spectral quantities from our numerical metrics. Using similar resources we expect our methods to practically extend to Calabi-Yau three-folds with a high degree of discrete symmetry, although we expect the general three-fold to remain a challenge due to memory requirements.Comment: 38 pages, 10 figures; program code and animations of figures downloadable from http://schwinger.harvard.edu/~wiseman/K3/ ; v2 minor corrections, references adde

Relação entre o escurecimento dos grãos de feijão carioca e o tempo de cocção.

Objetivo deste trabalho foi verificar a associação entre o retardamento do escurecimento dos grãos de feijão carioca e o seu tempo de cocção.CONAFE

Polyharmonic approximation on the sphere

The purpose of this article is to provide new error estimates for a popular type of SBF approximation on the sphere: approximating by linear combinations of Green's functions of polyharmonic differential operators. We show that the $L_p$ approximation order for this kind of approximation is $\sigma$ for functions having $L_p$ smoothness $\sigma$ (for $\sigma$ up to the order of the underlying differential operator, just as in univariate spline theory). This is an improvement over previous error estimates, which penalized the approximation order when measuring error in $L_p$, p>2 and held only in a restrictive setting when measuring error in $L_p$, p<2.Comment: 16 pages; revised version; to appear in Constr. Appro

Frequência haplotípica de Xanthomonas axonopodis pv. phaseoliestimada por Rep-PCR.

O objetivo deste trabalho foi estimar a frequência haplotípica de vinte isolados de Xap oriundos de quatro regiões produtoras de feijoeiro comum no Brasil.Pôster - pós-graduação