The Effect of Vaccination on Children's Physical and Cognitive Development in the Philippines

We use data from the Cebu Longitudinal Health and Nutrition Survey in the Philippines to link vaccination in the first two years of life with later physical and cognitive development in children. We use propensity score matching to estimate the causal effect of vaccination on child development. We find no effect of vaccination on later height or weight, but full childhood vaccination for measles, polio, TB, and DPT significantly increases cognitive test scores relative to matched children who received no vaccinations. The size of the effect is large, raising test scores, on average, by about half a standard deviation.vaccination, Phiippines, cognitive development

Diseño, desarrollo y prototipo de un producto para la estimulación multisensorial de personas on discapacidad físico-psíquica

Este proyecto trata sobre el diseño y fabricación de una máquina de rehabilitación para la muñeca. En él se explica que es la rehabilitación, para que sirve, como se realiza, la situación actual en este ámbito y que aspectos se deben tener en cuenta para llevar a cabo una recuperación adecuada. Por otra parte se estudia la anatomía de la muñeca y la mano así como las lesiones que pueden y suelen producirse. Se muestra la evolución que ha tenido el producto, desde los bocetos e ideas iniciales hasta llegar a un diseño final, mostrando el diseño de cada una de las piezas y su desarrollo y mejora a lo largo del proyecto. Se ha trabajado cada pieza para conseguir un resultado óptimo, ligero y de fácil uso. También se ha estudiado el proceso de fabricación más adecuado para el producto, así como los costes de fabricación, contactando con empresas para acotar todas las características tanto estéticas como mecánicas del producto

Bi-Directional Origami-Inspired SMA Folding Microactuator

We present the design, fabrication, and characterization of single and antagonistic SMA microactuators allowing for uni- and bi-directional self-folding of origami-inspired devices, respectively. Test devices consist of two triangular tiles that are interconnected by double-beam-shaped SMA microactuators fabricated from thin SMA foils of 20 µm thickness with memory shapes set to a 180° folding angle. Bi-directional self-folding is achieved by combining two counteracting SMA microactuators. We present a macromodel to describe the engineering stress–strain characteristics of the SMA foil and to perform FEM simulations on the characteristics of self-folding and the corresponding local evolution of phase transformation. Experiments on single-SMA microactuators demonstrate the uni-directional self-folding and tunability of bending angles up to 180°. The finite element simulations qualitatively describe the main features of the observed torque-folding angle characteristics and provide further insights into the angular dependence of the local profiles of the stress and martensite phase fraction. The first antagonistic SMA microactuators reveal bi-directional self-folding in the range of −44° to +40°, which remains well below the predicted limit of ±100°

The maximum modulus of a trigonometric trinomial

Let Lambda be a set of three integers and let C_Lambda be the space of 2pi-periodic functions with spectrum in Lambda endowed with the maximum modulus norm. We isolate the maximum modulus points x of trigonometric trinomials T in C_Lambda and prove that x is unique unless |T| has an axis of symmetry. This permits to compute the exposed and the extreme points of the unit ball of C_Lambda, to describe how the maximum modulus of T varies with respect to the arguments of its Fourier coefficients and to compute the norm of unimodular relative Fourier multipliers on C_Lambda. We obtain in particular the Sidon constant of Lambda