Sandra Baldassarri | University of Zaragoza (original) (raw)
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Papers by Sandra Baldassarri
International Journal on Artificial Intelligence Tools, 2011
ABSTRACT Interactive Digital Television is emerging as a potential medium to create opportunities... more ABSTRACT Interactive Digital Television is emerging as a potential medium to create opportunities for learning at home. In most existing t-learning (TV-based interactive learning) applications, the interaction with the user is limited to a simple sequential navigation within the application. And, since the educational contents are broadcast, there is no feedback from the student's progress. More engaged and intelligent t-learning interactive applications are needed to achieve more efficient forms of learning. This paper presents T-EDUCO, the first t-learning affective aware tutoring tool. T-EDUCO goes further than simply broadcasting an interactive educational application by allowing the figure of a tutor to be present and to govern the students' learning process. The tutor can access academic and emotional information about the students through a continuous "emotional path" that includes timestamps and information about the progress made in each exercise. In this way, personal messages or extra educational contents for improving learning can be sent to the students. The emotional information is extracted by a novel Artificial Intelligence method that evaluates with a 2-dimensional affective approach the students' facial expressions captured through a camera while performing the t-learning application tests. All this is made possible by a combination of broadcast and broadband technologies.
Resumen En este articulo se describen dos aplicaciones educativas para el aprendizaje de Robótica... more Resumen En este articulo se describen dos aplicaciones educativas para el aprendizaje de Robótica a través de Internet. Cada una de ellas representa un enfoque de aprendizaje diferente. La primera de ellas combina un entorno multimedia de aprendizaje con la interacción con un laboratorio real (dotado de un robot y una webcam) en el que el alumno puede experimentar y, por tanto, descubrir. En ella, un usuario sin experiencia puede aprender un lenguaje de programación, generar programas, compilarlos y probar los programas generados sobre el robot real cuyo comportamiento puede visualizar via web. El segundo entorno presenta al usuario un simulador virtual que le permite entrenarse en el manejo u programación de un torno industrial CNC (Control Numérico Computerizado) sin los costes y peligros de un entorno industrial real. El entorno de trabajo que se presenta, para plataformas PC de bajo coste, cubre el vacío existente entre la enseñanza a distancia de conceptos teóricos y la realiza...
Proceedings of the XV International Conference on Human Computer Interaction - Interacción '14, 2014
ABSTRACT In this paper, an Alternative and Augmentative Communication (AAC) tool called AraBoard,... more ABSTRACT In this paper, an Alternative and Augmentative Communication (AAC) tool called AraBoard, developed for facilitating the functional communication to persons with complex communication needs, is presented. In order to guarantee the tool's quality, an assessment process with experts has been carried out. The experts used as instrument a checklist previously prepared from the a review of the related work and standards. In this way, a resource for assessment of AAC tools is given, and also the results of this evaluation, which verify a high level of accessibility in AraBoard, are shown. Finally, some suggestions to improve and to be included in new tool versions are presented.
Multimedia Tools and Applications, 2014
New applications in virtual reality, robotics and medicine are impelling the dynamics-based metho... more New applications in virtual reality, robotics and medicine are impelling the dynamics-based methods for the human body simulation. The main benefit of using these methods is the reality of the resulting animation. In this paper, a physically-based animation system of human locomotion, that not needs captured data, is presented. The dynamic model has very simple actuators for modelling the muscular actions. The action of the actuators is simulated by the introduction of "patterns of force", based on empirical knowledge of the biomechanics of human locomotion. By the use of the dynamics, the basic motion of the human body can be obtained. The remaining variables of the model are calculated phase by phase, by applying kinematics to generate a realistic visualization of the human locomotion. Significant information is obtained from the system, such as the values of joint angles, joint torques and muscles forces generated during walking.
La junta de culata de un motor asegura la estanqueidad de los gases de combustión al circuito de ... more La junta de culata de un motor asegura la estanqueidad de los gases de combustión al circuito de refrigeración y de aceite. Los motores de combustión interna han ido evolucionando y el diseño de juntas de culata se ha adaptado a esta necesidad de innovación, introduciendo nuevos materiales y aumentando sus prestaciones.
Augmented Reality (AR) is one of the most revolutionary technologies of recent times. It makes po... more Augmented Reality (AR) is one of the most revolutionary technologies of recent times. It makes possible to enhance the real world by contextualizing computer generated data overlaid on top of it. The AR paradigm opens the way for the development of innovative applications where the user perceives virtual and real objects as coexisting in the same space. With the advent of smartphones with ever increasing advanced features, AR has the opportunity to emerge as an interesting option to have wide ranging applications on these devices. In this paper, we present the design, implementation and testing of an AR client application targeting the Androidbased smartphones that will allow 2D and 3D efficient navigation in the real world enriched with virtual information through visual annotations contextually associated with the real places.
International Journal on Artificial Intelligence Tools, 2011
ABSTRACT Interactive Digital Television is emerging as a potential medium to create opportunities... more ABSTRACT Interactive Digital Television is emerging as a potential medium to create opportunities for learning at home. In most existing t-learning (TV-based interactive learning) applications, the interaction with the user is limited to a simple sequential navigation within the application. And, since the educational contents are broadcast, there is no feedback from the student's progress. More engaged and intelligent t-learning interactive applications are needed to achieve more efficient forms of learning. This paper presents T-EDUCO, the first t-learning affective aware tutoring tool. T-EDUCO goes further than simply broadcasting an interactive educational application by allowing the figure of a tutor to be present and to govern the students' learning process. The tutor can access academic and emotional information about the students through a continuous "emotional path" that includes timestamps and information about the progress made in each exercise. In this way, personal messages or extra educational contents for improving learning can be sent to the students. The emotional information is extracted by a novel Artificial Intelligence method that evaluates with a 2-dimensional affective approach the students' facial expressions captured through a camera while performing the t-learning application tests. All this is made possible by a combination of broadcast and broadband technologies.
Resumen En este articulo se describen dos aplicaciones educativas para el aprendizaje de Robótica... more Resumen En este articulo se describen dos aplicaciones educativas para el aprendizaje de Robótica a través de Internet. Cada una de ellas representa un enfoque de aprendizaje diferente. La primera de ellas combina un entorno multimedia de aprendizaje con la interacción con un laboratorio real (dotado de un robot y una webcam) en el que el alumno puede experimentar y, por tanto, descubrir. En ella, un usuario sin experiencia puede aprender un lenguaje de programación, generar programas, compilarlos y probar los programas generados sobre el robot real cuyo comportamiento puede visualizar via web. El segundo entorno presenta al usuario un simulador virtual que le permite entrenarse en el manejo u programación de un torno industrial CNC (Control Numérico Computerizado) sin los costes y peligros de un entorno industrial real. El entorno de trabajo que se presenta, para plataformas PC de bajo coste, cubre el vacío existente entre la enseñanza a distancia de conceptos teóricos y la realiza...
Proceedings of the XV International Conference on Human Computer Interaction - Interacción '14, 2014
ABSTRACT In this paper, an Alternative and Augmentative Communication (AAC) tool called AraBoard,... more ABSTRACT In this paper, an Alternative and Augmentative Communication (AAC) tool called AraBoard, developed for facilitating the functional communication to persons with complex communication needs, is presented. In order to guarantee the tool's quality, an assessment process with experts has been carried out. The experts used as instrument a checklist previously prepared from the a review of the related work and standards. In this way, a resource for assessment of AAC tools is given, and also the results of this evaluation, which verify a high level of accessibility in AraBoard, are shown. Finally, some suggestions to improve and to be included in new tool versions are presented.
Multimedia Tools and Applications, 2014
New applications in virtual reality, robotics and medicine are impelling the dynamics-based metho... more New applications in virtual reality, robotics and medicine are impelling the dynamics-based methods for the human body simulation. The main benefit of using these methods is the reality of the resulting animation. In this paper, a physically-based animation system of human locomotion, that not needs captured data, is presented. The dynamic model has very simple actuators for modelling the muscular actions. The action of the actuators is simulated by the introduction of "patterns of force", based on empirical knowledge of the biomechanics of human locomotion. By the use of the dynamics, the basic motion of the human body can be obtained. The remaining variables of the model are calculated phase by phase, by applying kinematics to generate a realistic visualization of the human locomotion. Significant information is obtained from the system, such as the values of joint angles, joint torques and muscles forces generated during walking.
La junta de culata de un motor asegura la estanqueidad de los gases de combustión al circuito de ... more La junta de culata de un motor asegura la estanqueidad de los gases de combustión al circuito de refrigeración y de aceite. Los motores de combustión interna han ido evolucionando y el diseño de juntas de culata se ha adaptado a esta necesidad de innovación, introduciendo nuevos materiales y aumentando sus prestaciones.
Augmented Reality (AR) is one of the most revolutionary technologies of recent times. It makes po... more Augmented Reality (AR) is one of the most revolutionary technologies of recent times. It makes possible to enhance the real world by contextualizing computer generated data overlaid on top of it. The AR paradigm opens the way for the development of innovative applications where the user perceives virtual and real objects as coexisting in the same space. With the advent of smartphones with ever increasing advanced features, AR has the opportunity to emerge as an interesting option to have wide ranging applications on these devices. In this paper, we present the design, implementation and testing of an AR client application targeting the Androidbased smartphones that will allow 2D and 3D efficient navigation in the real world enriched with virtual information through visual annotations contextually associated with the real places.