Search results for "Methodologie"
showing 10 items of 2141 documents
Machine Learning-Based View Synthesis in Fourier Lightfield Microscopy
2022
Current interest in Fourier lightfield microscopy is increasing, due to its ability to acquire 3D images of thick dynamic samples. This technique is based on simultaneously capturing, in a single shot, and with a monocular setup, a number of orthographic perspective views of 3D microscopic samples. An essential feature of Fourier lightfield microscopy is that the number of acquired views is low, due to the trade-off relationship existing between the number of views and their corresponding lateral resolution. Therefore, it is important to have a tool for the generation of a high number of synthesized view images, without compromising their lateral resolution. In this context we investigate h…
Combining fuzzy C-mean and normalized convolution for cloud detection in IR images
2009
An important task for the cloud monitoring in several frameworks is providing maps of the cloud coverage. In this paper we present a method to detect cloudy pixels for images taken from ground by an infra-red camera. The method is a three-steps algorithm mainly based on a Fuzzy C-Mean clustering, that works on a feature space derived from the original image and the output of the reconstructed image obtained via normalized convolution. Experiments, run on several infra-red images acquired under different conditions, show that the cloud maps returned are satisfactory. © 2009 Springer Berlin Heidelberg.
The second data release of the INT Photometric Hα Survey of the Northern Galactic Plane (IPHAS DR2)
2014
The INT/WFC Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS) is a 1800 square degrees imaging survey covering Galactic latitudes |b| < 5 deg and longitudes l = 30 to 215 deg in the r, i and H-alpha filters using the Wide Field Camera (WFC) on the 2.5-metre Isaac Newton Telescope (INT) in La Palma. We present the first quality-controlled and globally-calibrated source catalogue derived from the survey, providing single-epoch photometry for 219 million unique sources across 92% of the footprint. The observations were carried out between 2003 and 2012 at a median seeing of 1.1 arcsec (sampled at 0.33 arcsec/pixel) and to a mean 5\sigma-depth of 21.2 (r), 20.0 (i) and 20.3 (H-a…
Computational imaging with a balanced detector
2016
Single-pixel cameras allow to obtain images in a wide range of challenging scenarios, including broad regions of the electromagnetic spectrum and through scattering media. However, there still exist several drawbacks that single-pixel architectures must address, such as acquisition speed and imaging in the presence of ambient light. In this work we introduce balanced detection in combination with simultaneous complementary illumination in a single-pixel camera. This approach enables to acquire information even when the power of the parasite signal is higher than the signal itself. Furthermore, this novel detection scheme increases both the frame rate and the signal-to-noise ratio of the sys…
«LA FISIOLOGÍA INVISIBLE»: recursos audiovisuales para la enseñanza de la fisiología en ciencias de la salud
2019
[EN] Human physiology is a basic subject during the first courses related to health sciences. Physiology as a discipline is markedly heterogeneous, since it includes anatomical, functional, molecular and biochemical notions, all widely interconnected. For this reason, it is difficult for students to integrate this knowledge, especially in the first years where the rest of related subjects (general biology, biochemistry, etc.) are taken at the same time. To facilitate this learning, the audio-visual material implies a great support when it comes to specifying abstract concepts and data obtained through complex experiments. Currently students are digital natives, and find the audiovisual tool…
Implementación del método del caso en la asignatura de Ingeniería de Procesos y Productos II del grado en Ingeniería Química
2021
[EN] In this work, the case method has been used in the subject Process and Product Engineering II, which belongs to the fourth course of the Chemical Engineering Degree of the Universitat de València. Different cases have been proposed in the classroom practices in order to students acquire the competences of the subject and improve the results of the exam. A rubric was designed to evaluate the cases which was accessible to the students. The cases were proposed in the exam, in particular, cases related to four lessons which are usually complicated to students and the results obtained for these cases were compared with the results obtained in the questions (presented in a theoretical way) o…
Utilización de Kahoot! en las clases teóricas de Anatomía Patológica: mejorando la motivación e interacción en la docencia virtual
2021
[EN] Faced with the COVID-19 pandemic situation, education has had to adapt to online teaching, trying to preserve the essential student-teacher interaction. In this project we used the interactive tool Kahoot! in the theory lectures of Special Anatomical Pathology of the Degree in Medicine, which were fully taught online. The games consisted of questions about the lesson´s contents, to strengthen learning and self-evaluation. After playing Kahoot!, results were discussed to highlight important concepts and explain doubts. The perception of the students was evaluated through an online survey. The results indicate that using Kahoot! in the theory classes has been very satisfactory and has en…
La dimensión social del lenguaje como una oportunidad educativa para la promoción del diálogo intercultural en el aula de Educación Superior
2021
[EN] For some time, it has been considered the need to approach the educational experience to the student sociocultural reality in the context of a classroom in Higher Education. This need is even more evident in the context of international exchange programs, in which the main objective is precisely to provide a space for mutual enrichment between the student's culture of origin and the host culture. In this sense, the “Grup d’Acompanyament Lingüístic” (GRUPal) works to promote the intercultural dialogue that inevitably and spontaneously takes place in and outside the classroom. The purpose of this paper is to present a didactic intervention based on inclusion and cooperative exchange as w…
Enseñar Sociología a quienes no estudian Sociología
2019
[EN] The sociological imagination (Wright Mills, 1993) is fundamental in the teaching profession. It is not possible to understand individuals’ actions of the different education agents without knowing their place in the social structure. The objective of this proposal is that the students of the Degree in Preschool Education (University of Valencia) achieve this point of view. The project starts with a flipped classroom methodology in combination with other active methodologies to end contrasting scientific knowledge with the daily teacher’s work, through the realization and analyses of interviews.
Wet Chemical Synthesis and a Combined X-ray and Mössbauer Study of the Formation of FeSb2 Nanoparticles
2011
Understanding how solids form is a challenging task, and few strategies allow for elucidation of reaction pathways that are useful for designing the synthesis of solids. Here, we report a powerful solution-mediated approach for formation of nanocrystals of the thermoelectrically promising FeSb(2) that uses activated metal nanoparticles as precursors. The small particle size of the reactants ensures minimum diffusion paths, low activation barriers, and low reaction temperatures, thereby eliminating solid-solid diffusion as the rate-limiting step in conventional bulk-scale solid-state synthesis. A time- and temperature-dependent study of formation of nanoparticular FeSb(2) by X-ray powder dif…