Search results for "visualització"
showing 6 items of 6 documents
Making nonlinear manifold learning models interpretable: The manifold grand tour
2015
Smooth nonlinear topographic maps of the data distribution to guide a Grand Tour visualisation.Prioritisation of data linear views that are most consistent with data structure in the maps.Useful visualisations that cannot be obtained by other more classical approaches. Dimensionality reduction is required to produce visualisations of high dimensional data. In this framework, one of the most straightforward approaches to visualising high dimensional data is based on reducing complexity and applying linear projections while tumbling the projection axes in a defined sequence which generates a Grand Tour of the data. We propose using smooth nonlinear topographic maps of the data distribution to…
Habilitats de visualització manifestades per alumnes de primària quan resolen activitats de geometria 3D i la seua relació amb el talent matemàtic
2016
Aquesta investigació ha estat motivada per la importància de la visualització per comprendre millor el món que ens envolta, fet que contrasta amb la realitat a l’escola, on no se li dóna la consideració necessària. D’altra banda, també ens han preocupat els alumnes amb talent matemàtic, ja que reben una atenció molt deficient en les aules ordinàries. En aquest sentit, aquesta investigació té per objectius generals oferir un material educatiu caracteritzat per l’ús de diferents materials manipulatius que ajuden a l’alumnat amb diferents graus de talent matemàtic a manifestar les seues habilitats de visualització (Del Grande, 1990) i característiques de talent matemàtic. Els objectius concret…
Texture advection on discontinuous flows
2015
Texture advection techniques, which transport textures using a velocity field, are used to visualize the dynamics of a flow on a triangle mesh. Some flow phenomena lead to velocity fields with discontinuities that cause the deformation of the texture which is not properly controlled by these techniques. We propose a method to detect and visualize discontinuities on a flow, keeping consistent texture advection at both sides of the discontinuity. The method handles the possibility that the discontinuity travels across the domain of the flow with arbitrary velocity, estimating its speed with least-squares approximation. The technique is tested with different sample scenarios and with two avala…
Càlcul de coordenades geogràfiques a partir de les estrelles: una proposta didàctica entre les matemàtiques i l'astronomia
2016
[EN] This paper presents a didactical proposal for 11th grade students. The purpose of the activities is to show the relationship between astronomy and mathematics, specifically with the calculation of both geographic coordinates: latitude and longitude. The methodology used encourages independent work of students by using interactive digital applications and manipulative materials. These ressources allow students to work more easily with threedimensional geometry concepts that, otherwise, are abstract for them. The proposal is based on a classic problem: find the exact geographic position of any point on the Earth.
Roadmap on digital holography [Invited]
2021
This Roadmap article on digital holography provides an overview of a vast array of research activities in the field of digital holography. The paper consists of a series of 25 sections from the prominent experts in digital holography presenting various aspects of the field on sensing, 3D imaging and displays, virtual and augmented reality, microscopy, cell identification, tomography, label-free live cell imaging, and other applications. Each section represents the vision of its author to describe the significant progress, potential impact, important developments, and challenging issues in the field of digital holography.
Critical Digital Editions of Theatrical Texts: The Example of La estrella de Sevilla
2014
This article analyses the process of creating a multilingual and multimedia critical digital edition of the text from the Spanish Golden Age La Estrella de Sevilla. It begins with a reflection on what a critical digital edition is, and then it presents different projects about digital editions of theatrical texts as well as some practical issues on the encoding of the texts included in this digital critical edition.