Grothendieck categories as a bilocalization of linear sites

We prove that the 2-category Grt of Grothendieck abelian categories with colimit preserving functors and natural transformations is a bicategory of fractions in the sense of Pronk of the 2-category Site of linear sites with continuous morphisms of sites and natural transformations. This result can potentially be used to make the tensor product of Grothendieck categories from earlier work by Lowen, Shoikhet and the author into a bi-monoidal structure on Grt

Gabriel-Ulmer duality for topoi and its relation with site presentations

Let $\kappa$ be a regular cardinal. We study Gabriel-Ulmer duality when one restricts the 2-category of locally $\kappa$-presentable categories with $\kappa$-accessible right adjoints to its locally full sub-2-category of $\kappa$-presentable Grothendieck topoi with geometric $\kappa$-accessible morphisms. In particular, we provide a full understanding of the locally full sub-2-category of the 2-category of $\kappa$-small cocomplete categories with $\kappa$-colimit preserving functors arising as the corresponding 2-category of presentations via the restriction. We analyse the relation of these presentations of Grothendieck topoi with site presentations and we show that the 2-category of locally $\kappa$-presentable Grothendieck topoi with geometric $\kappa$-accessible morphisms is a reflective sub-bicategory of the full sub-2-category of the 2-category of sites with morphisms of sites genearated by the weakly $\kappa$-ary sites in the sense of Shulman [37].Comment: 25 page

Plan de evaluación para la asignatura Estructuras de datos y de la información

La enseñanza de conceptos de programación en las Ingenierías Informáticas, en primero de informática necesitan unir a la enseñanza una propuesta de evaluación que involucre al alumnado desde el primer día y que le permita recibir feedback continuo. En la asignatura Estructura de datos y de la información hemos diseñado un plan de evaluación partiendo de las competencias, definiendo objetivos de aprendizaje concretos y relacionándolos con los medios de evaluación más adecuados a cada objetivo. Nuestra evaluación combina tres medios de evaluación: pruebas escritas, proyecto y carpeta de actividades que impulsan el trabajo del estudiante a lo largo del semestre completo. Este sistema tiene como objetivo favorecer el estudio y la participación activa. Como resultado colateral crece la interacción entre el profesor-estudiante, lo que favorece la relación entre ambos.SUMMARY -- Teaching programming concepts in the first year of Computer Engineering needs an evaluation proposal involving the students from day one and allows them to receive continuous feedback. On the course of "Data structure and algorithms" we designed an evaluation plan based on skills, defining specific learning objectives and relating them to the most appropriate evaluation tools for each objective, and thus to each skill. Our evaluation combines three evaluation tools: written tests, a project and a set of activities, which drive students work throughout the entire semester. This system aims to promote the study and active participation. And also it increases the interaction between teacher and student, which favours their relationship

Necesidad insatisfecha de anticoncepción en mujeres embarazadas.

Tesis (Maestría en Ciencias de Enfermería con Enfasis en Administración de Servicios) UANLUANLhttp://www.uanl.mx

C’est comment l’Amérique ? Identité irlandaise, témoignage de migration et transition culturelle dans l’écriture autobiographique de Frank McCourt

L’écrivain américano-irlandais Frank McCourt (1930-2009) a noué des liens étroits avec New York, sa ville natale. Il en fait le théâtre d’une grande partie de son oeuvre autobiographique dans laquelle il passe au crible et avec humour les stéréotypes de la société américaine. À sa critique sociale, il confère le relief de sa propre expérience migratoire – un aller-retour d’une quinzaine d’années – entre l’Irlande et les États-Unis. Une manière de mettre à distance les cultures pour mieux leur rendre hommage

The Anthropomorphic Hand Assessment Protocol (AHAP)

The progress in the development of anthropomorphic hands for robotic and prosthetic applications has not been followed by a parallel development of objective methods to evaluate their performance. The need for benchmarking in grasping research has been recognized by the robotics community as an important topic. In this study we present the Anthropomorphic Hand Assessment Protocol (AHAP) to address this need by providing a measure for quantifying the grasping ability of artificial hands and comparing hand designs. To this end, the AHAP uses 25 objects from the publicly available Yale-CMU-Berkeley Object and Model Set thereby enabling replicability. It is composed of 26 postures/tasks involving grasping with the eight most relevant human grasp types and two non-grasping postures. The AHAP allows to quantify the anthropomorphism and functionality of artificial hands through a numerical Grasping Ability Score (GAS). The AHAP was tested with different hands, the first version of the hand of the humanoid robot ARMAR-6 with three different configurations resulting from attachment of pads to fingertips and palm as well as the two versions of the KIT Prosthetic Hand. The benchmark was used to demonstrate the improvements of these hands in aspects like the grasping surface, the grasp force and the finger kinematics. The reliability, consistency and responsiveness of the benchmark have been statistically analyzed, indicating that the AHAP is a powerful tool for evaluating and comparing different artificial hand designs