Ignasi Labastida- Physics
- Technical Staff at University of Barcelona
Ignasi Labastida
- Physics
- Technical Staff at University of Barcelona
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58
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Publications
Publications (58)
This report investigates the copyright retention policy amongst publishers, self-archiving policies and records publisher policies on open licensing, also as relating to the Plan S requirements on rights and licensing. It should be understood as a snapshot in time informing on the current policy status. It also provides policy development guidance...
The FAIR principles have been widely cited, endorsed and adopted by a broad range of stakeholders since their publication in 2016. By intention, the 15 FAIR guiding principles do not dictate specific technological implementations, but provide guidance for improving Findability, Accessibility, Interoperability and Reusability of digital resources. T...
In order to provide responsible access to health data by reconciling benefits of data sharing with privacy rights and ethical and regulatory requirements, Findable, Accessible, Interoperable and Reusable (FAIR) metadata should be developed. According to the H2020 Program Guidelines on FAIR Data, data should be “as open as possible and as closed as...
The last letter of the FAIR acronym stands for Reusability. Data and metadata should be made available with a clear and accessible usage license. But, what are the choices? How can researchers share data and allow reusability? Are all the licenses available for sharing content suitable for data? Data can be covered by different layers of copyright...
Open Access seems to have reached a flipping point and become a real option when researchers decide where to publish. However the figures provided when someone gives percentages are not clear because there is a lack of coincidence when defining open access. In this paper we would like to explain the project initiated by two Catalan universities, th...
This article highlights important new opportunities for libraries by analysing the roles they could potentially play in citizen science projects. Citizen science is one of the eight pillars of open science identified by the Open Science Policy Platform, an EC Working Group. The authors of the article suggest that roles for libraries wishing to supp...
Fa uns anys l’accés obert semblava una opció minoritària que no acabava d’establir-se com a alternativa per difondre els resultats de la investigació i avançar en la carrera acadèmica. El suport decidit de les institucions que financen la recerca ha estat cabdal perquè avui l’accés obert sigui una alternativa viable a l’hora de publicar i a més sem...
A group of fourteen authors came together in February 2018 at the TIB (German National Library of Science and Technology) in Hannover to create an open, living handbook on Open Science training. High-quality trainings are fundamental when aiming at a cultural change towards the implementation of Open Science principles. Teaching resources provide g...
The inclusion of optoelectronic displays has enabled optical correlators to improve radically and maintain the competitive edge of optical processors among information processing fields. In this work, an optical correlator has been implemented by using two VGA liquid crystal displays as spatial light modulators, both at the input and Fourier planes...
Para cualquier defensor del acceso abierto, Peter Suber es uno de los referentes, por no decir el referente, en este ambito. Suber participo, a finales de 2001, en la reunion de Budapest donde se genero la conocida Declaracion que conforma la base del movimiento actual del acceso abierto, estableciendo las dos estrategias para alcanzarlo. Suber, pr...
The latest decisions on policies from research funders have been aimed at promoting open dissemination of research outputs, available to everyone, without any restriction, and allowing their reuse. These policies, which began to be applied to publications, have been spread to research data, a well appreciated good among researchers who do not easil...
During the last decade universities have developed policies and infrastructures to support open access to publications but now it is time to move a step forward. There is an increasing demand for accessing data supporting the research results to validate and reproduce them. Therefore universities have to be prepared for this new challenge that goes...
Reseña del informe: Frosio, Giancarlo F. (2014). Open access publishing: a literature review.http://www.create.ac.uk/wp-content/uploads/2014/01/CREATe-Working-Paper-2014-01.pdf
The presentation will provide an overview of the copyright issues related with the implementation of Open Access policies. It will focus on the need to obtain permission to reproduce and disseminate a copy of any published paper taking into account any copyright transfer signed by authors. This permission is needed to implement Green Open Access po...
Once open access policies on the publication of the research results have been consolidates, further actions to open more results arisen from research have begun to appear. Among those actions we find policies towards data used or obtained in a research process. Traditionally, those data were only available to a small group of researchers, but now...
Comunicació presentada a la "Jornada informativa Grupo de investigación Acceso Abierto a la Ciencia". Barcelona, 3 de marzo de 2010
What happens to fictional characters when they "die"?
Requereix instal·lar-se un executable Physical Optics multimedia application designed for undergraduate students. Includes an hypertext, numerical simulations, images, videos, and self-evaluation tool Aplicación multimedia de Óptica Física diseñado para estudiantes. Incluye un hipertexto, simulaciones numéricas, imágenes, vídeos, y un instrumento d...
El projecte de Creative Commons a lEstat espanyol es va gestar al principi de lany 2003, però fins fa un any no va ser possible accedir a les llicències adaptades a la legislació espanyola sobre propietat intellectual. A més daquest treball dadaptació, shan realitzat altres activitats centrades, sobretot, en la difusió i lexplicació del sis...
A la suite de l'article de Marco Marandola El sistema de las Creative commons, l'A. presente de maniere detaillee le systeme de licences propose dans le cadre du projet Creative Commons : il s'agit de donner aux createurs la possibilite de ceder certains de leurs droits d'auteur et de s'en reserver d'autres. Il y a six licences types, en fonction d...
We analyze the behavior of complex information in the Fresnel domain, taking into account the limited capability to display complex values of liquid crystal devices when they are used as holographic displays. To do this analysis we study the reconstruction of Fresnel holograms at several distances using the different parts of the complex distributi...
We present a simple method of constructing synthetic discriminant function filters optimized to take into account the modulation of liquid-crystal devices. This relaxation algorithm, a generalization of the Jared and Ennis method, is an iterative method that includes arbitrary modulations for both scene and filter, extending the problem to the comp...
In this work we analyze the behavior of complex information in Fresnel domain taking into account the limited capability to display complex transmittance values of current liquid crystal devices, when used as holographic displays. In order to do this analysis we compute the reconstruction of Fresnel holograms at several distances using the differen...
We present an educational resource based in a virtual optical laboratory for undergraduate students. It consists in a web-based textbook with several applets to illustrate the theory and simplify the teaching tasks in the classroom. These programs can also be used as a method for self-learning in an on-line environment. Applets are written in Java...
We propose a method to display full complex Fresnel holograms by adding the information displayed on two analogue ferroelectric liquid crystal spatial light modulators. One of them works in real-only configuration and the other in imaginary-only mode. The Fresnel holograms are computed by backpropagating an object at a selected distance with the Fr...
We propose a method to display full complex Fresnel holograms by adding the information displayed on two analogue ferroelectric liquid crystal spatial light modulators. One of them works in real-only configuration and the other in imaginary-only mode. The Fresnel holograms are computed by backpropagating an object at a selected distance with the Fr...
In this paper we present a method for reconstructing Fresnel holograms using two liquid crystal devices, one to display the amplitude information and the other to display the phase. The theoretical approach has been adapted to real configurations of VGA panels removed from a commercial video projector. The optical setup is based on the projection o...
Optical correlators process two-dimensional images that come from a three-dimensional world. Filters designed for object recognition of three-dimensional scenes must have the information of all possible views. This implies a large quantity of filters, especially when the object is moving with respect to the observer. Although filters designed throu...
Recently, we proposed an approach to obtain a single on-axis correlation with use of a joint transform correlator. That method required a displaying device with a determinate configuration, however, in this work we introduce a modification to be used with a modulator without a full 2π phase modulation. This variation is based on a binary joint powe...
In this work we propose a method to obtain single centered correlations with an optical setup based on a joint transform correlator. This approach is a modification of a previous procedure that required displaying devices with a full 2(pi) phase modulation. The displaying requirements are less restrictive than before, allowing the use of many modul...
![LCD [0–π] phase-only modulation operating curve.](profile/Ignasi-Labastida/publication/5514263/figure/fig3/AS:11431281293366037@1732815366717/LCD-0-p-phase-only-modulation-operating-curve_Q320.jpg)
The development of liquid-crystal panels for use in commercial equipment has been aimed at improving the pixel resolution and the display efficiency. These improvements have led to a reduction in the thickness of such devices, among other outcomes, that involves a loss in phase modulation. We propose a modification of the classical phase-only filte...
We propose a method to obtain a single centered correlation with use of a joint transform correlator. We analyze the required setup to carry out the whole process optically, and we also present experimental results.
We analyze in depth several engineering problems regarding the construction of a VanderLugt correlator. Two liquid crystal devices are used in the input and Fourier planes, and the large distances involved are reduced with the help of telephoto systems. An original method to control both modulators with a single 8-bit frame grabber and a single vid...
In this work we present the developments for the simulation of image formation through an ophthalmic lens. The procedure is, essentially an exact ray tracing taking into account the particular mobility conditions of the exit pupil. This leads to the computation of astigmatism as a function of the field angle considered. In the computer program, the...
The proposal of this work is the study of a method for characterization of the focal of ophthalmic lenses whose surface refraction index has been modified by diffusion techniques based on thermal ion exchange in glass. In particular the aim is the measurement of the variations in focal length of ophthalmic lenses after undergoing a diffusion proces...
Ponencia presentada en el II Coloquio Internacional E-DOCPA 2008, celebrado en Oviedo los días 11, 12 y 13 de junio de 2008.
Què vol dir open access? open licences? open standards? open courseware? Presentació i explicació de les llicències Creative Commons i les seves aplicacions en el camp del coneixement científic.
El projecte de Creative Commons a l'Estat espanyol es va gestar al principi de l'any 2003, però fins fa un any no va ser possible accedir a les llicències adaptades a la legislació espanyola sobre propietat intel·lectual. A més d'aquest treball d'adaptació, s'han realitzat altres activitats —centrades, sobretot, en la difusió i l'explicació del sis...
Presentacions del curs celebrat al COBDC els dies 7, 12, 19 i 21 de juny de 2006.
Requereix instal·lar-se un executable Physical Optics multimedia application designed for undergraduate students. Includes an hypertext, numerical simulations, images, videos, and self-evaluation tool Aplicación multimedia de Óptica Física diseñado para estudiantes. Incluye un hipertexto, simulaciones numéricas, imágenes, vídeos, y un instrumento d...
En: Multimedia Educativo 2000. II Jornadas Multimedia Educativo Barcelona 2000, n.2, julio En esta comunicación se presenta una aplicación multimedia para el aprendizaje de la óptica, destinada a alumnos de primer ciclo de la Licenciatura de Física. El hipertexto se ha pensado para la docencia presencial pero no se excluye su uso en entornos semi o...
El objetivo de este protocolo: Establecer unos principios que debe seguir cualquier herramienta legal que pretenda asegurar que los datos científicos sean abiertos. En la presentación se tratan los aspectos mas relevantes relacionados con este tema.
Les llicències de Creative Commons són una alternativa a la gestió tradicional dels drets d'autor que s'ha estès ràpidament gràcies a Internet en els seus cinc anys d'existència. L'aparició d'aquesta nova eina legal ha obert un debat sobre els models de difusió de qualsevol contingut i, en definitiva, del coneixement que ha obligat a replantejament...
A new initiative has sprung on the path created by the Open Access (OA) movement: Open Education (OE). The initiative's aim is to open up all educational resources at all learning levels. In order to achieve this goal, several international institutions, like UNESCO and the OECD, have published reports, surveys and documents to help educational ins...
comunicacció presentada a: "IX Workshop REBIUN sobre Proyectos Digitales: Investigación, innovación e información: tendencias en los sistemas digitales de gestión de la producción científica". Salamanca 1 y 2 de octubre de 2009
Comunicació presentada a la I Setmana Internacional de l'Accés Obert a la Universitat de Barcelona. Universitat de Barcelona, del 19 al 23 d'octubre de 2009
Comunicació presentada a: II Setmana Internacional de l'Accés Obert a la Universitat de Barcelona. Universitat de Barcelona, del 18 al 22 d'octubre de 2010
Comunicació presentada a: II Setmana Internacional de l'Accés Obert a la Universitat de Barcelona. Universitat de Barcelona, el 19 d'octubre de 2010
