R. Hijón-Neira, J. Urquiza-Fuentes, F. Domínguez-Mateos, J.Á. Velázquez-Iturbide. In Seventh IEEE International Conference on Advanced Learning Technologies (ICALT) 2007, Pages 262-264
Abstract. We have developed several tools to allow instructors analyze students' interactions in a Course Management System. In this paper we describe a Systematic Usability Evaluation designed to test the usability of one of these tools. The evaluations were based on task analysis and follow-up studies. We have assessed effectiveness, efficiency, usefulness, ease of use, learnability, and user's satisfaction of the tool. In addition to regular observation and questionnaires, 3- scope video recording was used to provide the evaluator with more information about interactions. The use of this technology helped us in identifying functions and features that need improvement. We describe the three-step method that we have developed and the satisfactory results it has provided us.
miércoles, 18 de julio de 2007
miércoles, 23 de mayo de 2007
Human-Centered Aspects
Olga Kulyk, Robert Kosara, Jaime Urquiza and Ingo Wassink. In Human-Centered Visualization Environments, 2007, Pages 13-75
Abstract. Humans have remarkable perceptual capabilities. These capabilities are heavily underestimated in current visualizations. Often, this is due to the lack of an in-depth user study to set the requirements for optimal visualizations. The designer does not understand what kind of information should be visualized, how it should be presented or what kind of interactions should be supported. The key elements of successful information visualization are the correct data using the best visualization technique and the best interaction techniques with respect to users. If one of these elements is ignored, people might interpret the data in the wrong way and thus might not understand the underlying information or a pattern.
Abstract. Humans have remarkable perceptual capabilities. These capabilities are heavily underestimated in current visualizations. Often, this is due to the lack of an in-depth user study to set the requirements for optimal visualizations. The designer does not understand what kind of information should be visualized, how it should be presented or what kind of interactions should be supported. The key elements of successful information visualization are the correct data using the best visualization technique and the best interaction techniques with respect to users. If one of these elements is ignored, people might interpret the data in the wrong way and thus might not understand the underlying information or a pattern.
domingo, 4 de marzo de 2007
WinHIPE: an IDE for functional programming based on rewriting and visualization
C. Pareja-Flores, J. Urquiza-Fuentes, J.Á. Velázquez-Iturbide. ACM SIGPLAN Notices 42(3), 2007, Pages 14-23
Abstract. The article describes an IDE for functional programming, called WinHIPE. It provides an interactive and flexible tracer, as well as a powerful visualization and animation system. The former tool is based on the rewriting model of evaluation, and the latter provides automatic generation of visualizations and animations, friendly support for customization, maintenance and exportation of animations to the Web, and facilities to cope with large scale. Its main advantage over other visualization systems is an effortless approach to animation creation and maintenance, based on generating visualizations and animations automatically, as a side effect of program execution. Finally, we briefly describe our experience using the system during several years in educational settings.
Abstract. The article describes an IDE for functional programming, called WinHIPE. It provides an interactive and flexible tracer, as well as a powerful visualization and animation system. The former tool is based on the rewriting model of evaluation, and the latter provides automatic generation of visualizations and animations, friendly support for customization, maintenance and exportation of animations to the Web, and facilities to cope with large scale. Its main advantage over other visualization systems is an effortless approach to animation creation and maintenance, based on generating visualizations and animations automatically, as a side effect of program execution. Finally, we briefly describe our experience using the system during several years in educational settings.
martes, 6 de febrero de 2007
An Evaluation of the Effortless Approach to Build Algorithm Animations with WinHIPE
J. Urquiza-Fuentes, J.Á. Velázquez-Iturbide. Electr. Notes Theor. Comput. Sci. 178, 2007, Pages 3-13
Abstract. The use of algorithm visualizations in computer science education is not a new thing. Although there is a firm belief that graphical representations of algorithms are learning aids, empirical studies show that what is important is what the students do with the animations rather than what they see in them. In this paper we compare to kinds of interaction: viewing animations vs constructing animations. We have conducted a controlled experiment where a group of students (n=15) had to study an algorithm and complete a knowledge test about it and a subjective opinion questionnaire. Students were randomly divided in constructing and viewing groups. Results have been measured by means of learning outcomes, efficiency issues and student's subjective opinion. Results significantly evidence that builders obtained better results than viewers.
Abstract. The use of algorithm visualizations in computer science education is not a new thing. Although there is a firm belief that graphical representations of algorithms are learning aids, empirical studies show that what is important is what the students do with the animations rather than what they see in them. In this paper we compare to kinds of interaction: viewing animations vs constructing animations. We have conducted a controlled experiment where a group of students (n=15) had to study an algorithm and complete a knowledge test about it and a subjective opinion questionnaire. Students were randomly divided in constructing and viewing groups. Results have been measured by means of learning outcomes, efficiency issues and student's subjective opinion. Results significantly evidence that builders obtained better results than viewers.
domingo, 8 de agosto de 2004
An Approach to the Use and Automatic Generation of Web-Based Learning Materials
V. Fresno-Fernández, S. Montalvo-Herranz, J. Pérez-Iglesias, J. Urquiza-Fuentes, and J.A. Veázquez-Iturbide. Advances in Web-Based Learning – ICWL 2004, LNCS Volume 3143, 2004, pp 201-208
This paper presents an approach to automatic generation and use of web-based learning materials (WLMs). It is made up of three phases: contents creation, division and browsing. Using XML in the creation phase, the independence between contents and their presentation, in addition to contents reusing, is achieved. The splitting phase is a automatical process and its output can be used in several WLMs. In the browsing phase two interfaces are implemented, an user-adaptative and a non-adaptative interface. The main features of our approach enables users to create learning content without a proof technical knowledge and e®ectivelly navigate the material to their needs.
This paper presents an approach to automatic generation and use of web-based learning materials (WLMs). It is made up of three phases: contents creation, division and browsing. Using XML in the creation phase, the independence between contents and their presentation, in addition to contents reusing, is achieved. The splitting phase is a automatical process and its output can be used in several WLMs. In the browsing phase two interfaces are implemented, an user-adaptative and a non-adaptative interface. The main features of our approach enables users to create learning content without a proof technical knowledge and e®ectivelly navigate the material to their needs.
Suscribirse a:
Entradas (Atom)