167 research outputs found
A Low-Cost Modular Platform for Heterogeneous Data Acquisition with Accurate Interchannel Synchronization
Most experimental fields of science and engineering require the use of data
acquisition systems (DAQ), devices in charge of sampling and converting electrical signals into digital data and, typically, performing all of the required signal preconditioning. Since commercial DAQ systems are normally focused on specific types of sensors and actuators, systems engineers may need to employ mutually-incompatible hardware from
different manufacturers in applications demanding heterogeneous inputs and outputs, such as small-signal analog inputs, differential quadrature rotatory encoders or variable current
outputs. A common undesirable side effect of heterogeneous DAQ hardware is the lack
of an accurate synchronization between samples captured by each device. To solve such a
problem with low-cost hardware, we present a novel modular DAQ architecture comprising a base board and a set of interchangeable modules. Our main design goal is the ability to sample all sources at predictable, fixed sampling frequencies, with a reduced synchronization mismatch (<1 s) between heterogeneous signal sources. We present experiments in the field of mechanical engineering, illustrating vibration spectrum analyses from piezoelectric accelerometers and, as a novelty in these kinds of experiments, the spectrum of quadrature encoder signals. Part of the design and software will be publicly released online
Multimodal Interactivity in the Foreign Language Section of the Spanish University Admission Examination
[ES] En el presente trabajo1 se muestran las enormes posibilidades que ofrece el concepto de
multimodalidad en los entornos digitales interactivos aplicados a las pruebas de selectividad
en el área de conocimiento de idiomas y que han sido desarrollados en los últimos años en
diferentes proyectos de investigación. Las investigaciones surgidas a partir de la automatización
telemática de las pruebas de selectividad, en el ámbito de la gestión, se relacionan con
trabajos que tratan de abordar la problemática relativa al acceso online a las pruebas, y que
permitirían en el futuro gestionar de manera eficiente la ejecución del propio examen y la
organización semiautomática de su corrección por Internet. Paralelamente, se ha abordado
el uso de aplicaciones multiplataforma y/o multinavegador, capaces de asumir los retos de la
validación técnica y funcional de la accesibilidad que permita su acceso universal. La multimodalidad
aplicada a los métodos de navegación durante la realización de la prueba telemática es posible gracias a los dispositivos ubicuos que permitirán la interacción simultánea en
el proceso de introducción de datos por parte del alumno. La propuesta del presente trabajo
consiste en demostrar la viabilidad técnica del proceso de ejecución del examen, en función
de las variables tecnológicas y formales de la navegación, considerando el examen disponible
en la actualidad, en dispositivos ubicuos que permitirán avanzar en los procesos de aprendizaje
de lenguas asistido por ordenador, también llamado CALL (Computer-Assisted Language Learning).
El desarrollo de la investigación ha permitido la creación de un prototipo que servirá
para analizar y validar la funcionalidad de este tipo de tecnologías interactivas adaptadas a la
realización de los exámenes de acceso a la universidad.Nuestro agradecimiento al Ministerio de Ciencia e Innovación (MICINN) por la financiación del Proyecto de Investigación
(con cofinanciación FEDER) en el marco del Plan Nacional I+D+I «Orientación, propuestas y enseñanza
para la sección de inglés en la Prueba de Acceso a la Universidad». Referencia FFI2011-22442.
Asimismo, parte del presente trabajo se ha desarrollado gracias a las investigaciones llevadas a cabo en el proyecto
«Análisis y verificación de la adaptación e interacción multimodal accesible en la realización de exámenes de aprendizaje
de idiomas sobre dispositivos móviles», subvencionado por la Universidad Politécnica de Valencia dentro del
programa: «Proyectos de nuevas líneas de investigación multidisciplinares. PAID-05-10».Magal Royo, T.; Giménez López, JL. (2012). La interactividad multimodal en la sección de lengua extranjera de la Prueba de Acceso a la Universidad en España. Revista de Educación. (357):163-177. http://hdl.handle.net/10251/29888S16317735
Information and communication technologies for the education of people with cognitive disabilities
Este artículo resume los trabajos de investigación y las conclusiones obtenidas relacionadas con el uso de las Tecnologías de la Información y de la Comunicación (TIC) en personas con discapacidad cognitiva. Los resultados de los estudios realizados por nuestro grupo de investigación se centraron en la problemática de la usabilidad y accesibilidad dentro de la generación de material didáctico y formativo audiovisual interactivo, factores imprescindibles para un diseño formal y funcional óptimo de herramientas telemáticas, dirigidas a permitir que, en un principio, cualquier tipo de usuario pueda acceder a ellas, independientemente de si padecen una discapacidad o no. Estos estudios intentaban valorar, por un lado, el grado de satisfacción de un grupo de pacientes con una enfermedad mental con deterioro cognitivo de carácter crónico al enfrentarse al manejo de herramientas digitales multimedia para su formación educacional, laboral y terapéutica, y por otro, valorar el grado de usabilidad y accesibilidad empleados en aplicaciones informáticas para evaluar y analizar las limitaciones concretas de estos colectivos, con la finalidad de componer un corpus teórico con criterios de usabilidad y accesibilidad para personas con una enfermedad mental que complementen las pautas generales de diseño y programación utilizados actualmente. Si bien es cierto que existen numerosas investigaciones en el ámbito médico y sanitario sobre la adecuación de las TIC a las necesidades de colectivos con alguna discapacidad física, existe una gran carencia de estudios científicos que valoren y analicen la accesibilidad real en la utilización de las nuevas tecnologías en personas con algún tipo de discapacidad intelectual de carácter cognitivo, centrado exclusivamente, en personas con algún grado de enfermedad mental. La evaluación sistemática de la usabilidad permite a diseñadores y desarrolladores informáticos valorar y mejorar, de forma continuada, los diseños y desarrollos obtenidos a través de la experiencia con el usuario, para optimizar el diseño y conseguir, de esta manera, un producto más competitivo, especialmente en el caso del acceso a Internet y de la educación a distancia.This article summarizes the research and conclusions related to the use of Information and Communication Technology (ICT) for people with cognitive disabilities. The results of studies conducted by our research group focused on issues of usability and accessibility within the generation of audio-visual materials and interactive training the essential factors for optimal format and function design of telematic tools, in order to allow all users access initially, whether a disable or not. These studies set out to assess, firstly, the degree of satisfaction of a group of patients with mental disabilities to manage digital media tools for their education, work and therapy, and secondly, the degree of usability and accessibility in software used to evaluate and analyze the constraints of these groups, in order to compose a corpus theoretical criteria of usability and accessibility for people with a mental illness that compliments general design guidelines and programming used today. While there are numerous investigations swap round medical and health fields on the appropriateness of ITCs to meet the needs of groups with physical disabilities, there is a serious lack of scientific studies that evaluate and analyze the real accessibility of the use of new technologies for people with intellectual disabilities, focusing exclusively on people with some degree of mental illness. The systematic assessment of usability allows software designers and developers to continuously evaluate, improve and optimize the desing and development using the experience gained with the user to optimize the design and achieve, in this way, a competitive product is, therefore, achievable, especially in the case of Internet access and distance.peerReviewe
O-City: Implementation of an Innovative Multimedia Platform for Promoting Orange Economy
[EN] O-City is a non-profit project funded by European Union with the aim of promoting Orange Economy throughout education and collaboration among municipalities, educational entities and businesses. This project has two main assets, the O-City e-learning platform and the O-City World platform. This paper presents the technical aspects of the O-City World platform, which is a digital application that allows interaction among cities, educators and professionals. This platform has a role-based access control with seven different users able to perform different functionalities. Thanks to the collaboration among these stakeholders the platform is growing exponentially.This work has been funded by European Commission inside the Erasmus Plus Projects - KA2: Cooperation for
innovation and the exchange of good practices - Knowledge Alliances under Project Number 600963-EPP-1-2018-
1-ES-EPPKA2-KA.Pérez Pascual, MA.; Giménez López, JL.; Palacio Samitier, D.; Marín-Roig Ramón, J. (2023). O-City: Implementation of an Innovative Multimedia Platform for Promoting Orange Economy. Journal on Computing and Cultural Heritage. 1-19. https://doi.org/10.1145/363112111
Structural Analysis of a Tablet PC Based Language Test
[EN] Ubiquitous language learning and testing has become a new challenging trend. Budget constraints in Europe and the rest of the world have made this way of delivery very attractive for materials designers as well as language testing organizations. Ubiquitoustesting has a very especial interest in low and medium stakes language testing in which mobile devices are supposed to serve both for delivering tests as well as for pre-test training. However, although the number of publications in language teaching increases rapidly, language testing through mobiles devices has had a limited interest in research. Purpose of Study: This research under the OPENPAU project intends to address the two main issues mentioned before emphasizing the design aspects. To do so, this paper presents the principles under which the mobile applications were designed, the mobile tool and the interface design.
Sources of Evidence: To do this study we used the description of the ergonomics, and we also considered the students needs and how those needs were incorporated in the interface design of the platform. Analysis and results: The study indicates that interface design is linked to issues of needs, technical constraints, purpose and budget. Overall, the paper evidences the tablet PC s have a tremendous potential to implement high-stakes tests in Spain at the moment dues to their versatility and limited cost.S2169217319
Dual-Polarization Interferometry: A Novel Technique To Light up the Nanomolecular World
This document is the Accepted Manuscript version of a Published Work that appeared in final form in
Chemical Reviews, copyright © American Chemical Society after peer review and technical editing by the publisher.
To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/cr5002063.[EN] The challenging lecture given in 1959 by physicist and Nobel Prize awarded R. P. Feynman:
“There's plenty of room at the bottom” is considered to be the starting point for
nanotechnology. With this peculiar title, Feynman encouraged researchers to explore
beyond the atomic level and predicted exciting new phenomena that might revolutionize
science and technology. Among these pioneering researchers are Eric Betzig, Stefan W. Hell
and William E. Moerner, who have been awarded with the Nobel Prize in Chemistry 2014
for developing the super-resolved fluorescence microscopy. However, it is important to
remark that the exploration of this amazing nanomolecular world began in the early 1980s
with the invention of the scanning tunneling1 and the atomic force microscopes2 (Figure 1).
Figure 1. Measurement scales.
The study and manipulation of interactions of nanometric dimensions could begin as
soon as measuring tools became more efficient. The last decades have witnessed the
development of techniques able to obtain information at the sub-molecular level, and their
applications especially on the biomedical field. As an example, the stimulating labor of
studying the role of conformational dynamics in reaction mechanisms has resulted in
Nanometers
10-1 10 102 103 1 104 105 106 107 108
DPI WORLD
Atom IgG Erythrocyte Grain of salt Tennis ball
Glucose Virus Amoeba Plea
numerous advances in life sciences.3 In this regard, the precise knowledge about molecular
interactions and their effects on protein function has greatly aided the discovery of new
targets in medical chemistry.
Figure 2. General scheme of different DPI applications.
The role of the structure in the protein behavior is a fundamental step in the
utilization, characterization and understanding of numerous biological processes.
Consequently, highly advanced functional and structural measurement tools have been
developed over the last decadess.4 Particularly, nuclear magnetic resonance (NMR), X-ray
crystallography and neutron reflectivity (NR) provide structural measurements, whereas
tools such as microcalorimetry or surface plasmon resonance (SPR) provide functional data.
Furthermore, the more recent approach based on Dual Polarization Interferometry (DPI), is
allowing the molecular interactions to be quantitatively measured at nanometric dimensions.
DPI is currently one of the most powerful label-free biosensing techniques in
heterogeneous format to record real-time data of conformational dynamics, which is
efficiently employed in different applications, such as bionanotechnology, surface science,
Biotechnology
Drug
Discovery
Lipid
Studies
Crystallography
Surface
Science
DPI
and crystallography or drug discovery (Figure 2). Their measurements can provide
information about the connection between the biomolecule function and its structural
changes. This technique is, to our knowledge, the most well-built and well-thought through
such waveguide sensor. It has its weaknesses, e.g. the necessity of using a relatively long
sensor element, but the information it delivers is the interaction of two polarization modes
of the propagating light with a molecular film at the top of the waveguide with which it
interacts through the evanescent field. It is well known that the use of an interferometric
readout and a long waveguide makes the measurements very stable and more accurate than
those of the competitor techniques. Accordingly, DPI can be described as a molecular ruler
whose quantitative values can be correlated directly with those from other usual techniques,
such as NMR, X-ray crystallography and NR, providing higher sensitivity and accuracy than
the classical acoustic and optical biosensors.
In 1996, Dr Neville Freeman conceived of the idea behind DPI as a robust and
reproducible biosensing technology and, together with Dr Graham Cross, developed the
concept and filed the original patent.5,6 This novel technique has gained popularity among
the scientific community in the last decade and the number of publications dealing with this
technique has increased considerably since the initial report in 2003.7 In this review, DPI is
compared with other techniques, and its theoretical basis and applications are outlined.
The fundamentals are specified together with strategies for chip functionalization and
applications of the aforementioned technology in a wide variety of research areas. All this
gives a unique chance to learn from this sensing technique, which may be an essential
reference to facilitate the work of future users.We thank Dr. Marcus Swann and Dr. Sergi Morals, with whom we have had many helpful discussions about DPI sensing and interferometry in general. We acknowledge financial support from the Generalitat Valenciana (GVA-PROMETEO/2010/008) as well as the Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund under award numbers CTQ2013-45875-R and CTQ2013-42914-R.Escorihuela Fuentes, J.; González Martínez, MÁ.; López-Paz, JL.; Puchades, R.; Maquieira Catala, Á.; Giménez Romero, D. (2015). Dual-Polarization Interferometry: A Novel Technique To Light up the Nanomolecular World. Chemical Reviews. 115(1):265-294. https://doi.org/10.1021/cr5002063265294115
Actuador con mecanismo de rigidez variable y par umbral
Número de publicación: ES2387228 A1 (18.09.2012) También publicado como: ES2387228 B2 (05.02.2013) Número de Solicitud: Consulta de Expedientes OEPM (C.E.O.) P201200712 (29.06.2012)Actuador con mecanismo de rigidez variable y par umbral, del tipo de los utilizados en articulaciones de revolución de brazos robóticos y que pueden modificar su rigidez. El actuador incorpora un motor (1) que se encarga de controlar la posición de equilibrio del eslabón de salida (13). El mecanismo contiene un resorte (18) y una palanca (12). La rigidez del mecanismo puede ser modificada variando la posición de esta palanca (12) mediante un motor (14). Dicha rigidez determina el valor del giro entre la posición de la polea (2) solidaria al eje de salida del motor (1) y la posición del eslabón (13). Dos tensores (5) y (6) permiten modificar la precarga de dos cables (3) y (4) respectivamente, de forma que el mecanismo no entra en funcionamiento hasta que no se ha sobrepasado un cierto valor de par sobre la articulación.Universidad de Almerí
Active methodology in the Audiovisual communication degree
The paper describes the adaptation methods of the active methodologies of the new European higher education area in the new Audiovisual Communication degree under the perspective of subjects related to the area of the interactive communication in Europe. The proposed active methodologies have been experimentally implemented into the new academic curricular development of the subjects, leading to a docent adjustment for the professors who currently teach lectures and who have been evaluated for the first time. (C) 2010 Elsevier Ltd. All rights reserved.Giménez López, JL.; Magal Royo, T.; García Laborda, J.; Dunai Dunai, L. (2010). Active methodology in the Audiovisual communication degree. Procedia Social and Behavioral Sciences. 2(2):4487-4491. doi:10.1016/j.sbspro.2010.03.717S448744912
Tecnologías de la Información y de la Comunicación orientadas a la educación de personas con discapacidad cognitiva
[ES] Este artículo resume los trabajos de investigación y las conclusiones obtenidas relacionadas con el uso de las Tecnologías de la Información y de la Comunicación (TIC) en personas con discapacidad cognitiva. Los resultados de los estudios realizados por nuestro grupo de investigación se centraron en la problemática de la usabilidad y accesibilidad dentro de la generación de material didáctico y formativo audiovisual interactivo, factores imprescindibles para un diseño formal y funcional óptimo de herramientas telemáticas, dirigidas a permitir que, en un principio, cualquier tipo de usuario pueda acceder a ellas, independientemente de si padecen una discapacidad o no. Estos estudios intentaban valorar, por un lado, el grado de satisfacción de un grupo de pacientes con una enfermedad mental con deterioro cognitivo de carácter crónico al enfrentarse al manejo de herramientas digitales multimedia para su formación educacional, laboral y terapéutica, y por otro, valorar el grado de usabilidad y accesibilidad empleados en aplicaciones informáticas para evaluar y analizar las limitaciones concretas de estos colectivos, con la finalidad de componer un corpus teórico con criterios de usabilidad y accesibilidad para personas con una enfermedad mental que complementen las pautas generales de diseño y programación utilizados actualmente. Si bien es cierto que existen numerosas investigaciones en el ámbito médico y sanitario sobre la adecuación de las TIC a las necesidades de colectivos con alguna discapacidad física, existe una gran carencia de estudios científicos que valoren y analicen la accesibilidad real en la utilización de las nuevas tecnologías en personas con algún tipo de discapacidad intelectual de carácter cognitivo, centrado exclusivamente, en personas con algún grado de enfermedad mental. La evaluación sistemática de la usabilidad permite a diseñadores y desarrolladores informáticos valorar y mejorar, de forma continuada, los diseños y desarrollos obtenidos a través de la experiencia con el usuario, para optimizar el diseño y conseguir, de esta manera, un producto más competitivo, especialmente en el caso del acceso a Internet y de la educación a distancia.[EN] This article summarizes the research and conclusions related to the use of
Information and Communication Technology (ICT) for people with cognitive
disabilities. The results of studies conducted by our research group focused on
issues of usability and accessibility within the generation of audiovisual materials
and interactive training the essential factors for optimal format and function design
of telematic tools, in order to allow all users access initially, whether a disable or
not. These studies set out to assess, firstly, the degree of satisfaction of a group of
patients with mental disabilities to manage digital media tools for their education,
work and therapy, and secondly, the degree of usability and accessibility in software
used to evaluate and analyze the constraints of these groups, in order to compose a
corpus theoretical criteria of usability and accessibility for people with a mental
illness that compliments general design guidelines and programming used today.
While there are numerous investigations swap round medical and health fields on
the appropriateness of ITCs to meet the needs of groups with physical disabilities,
there is a serious lack of scientific studies that evaluate and analyze the real
accessibility of the use of new technologies for people with intellectual disabilities,
focusing exclusively on people with some degree of mental illness. The systematic
assessment of usability allows software designers and developers to continuously
evaluate, improve and optimize the desing and development using the experience
gained with the user to optimize the design and achieve, in this way, a competitive
product is, therefore, achievable, especially in the case of Internet access and
distance.Prefasi Gomar, S.; Magal Royo, T.; Garde Calvo, F.; Giménez López, JL. (2010). Tecnologías de la Información y de la Comunicación orientadas a la educación de personas con discapacidad cognitiva. Revista Latinoamericana de Tecnología Educativa. 9(2):107-123. http://hdl.handle.net/10251/92438S1071239
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