Browsing by Author "Rigas, D."
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Item Metadata only Edutainment in E-learning interfaces.(2009) Ayad, K.; Rigas, D.Item Metadata only Employing virtual lecturers’ Facial expressions in virtual educational environments.(2008) Rigas, D.; Theonas, G.; Hobbs, D.This research began with a preliminary exploratory study that observed the relationship between the facial expressions of three human lecturers in a real academic lecture theatre and the reactions of the students to those expressions. Results informed the design of the first experiment that aimed to investigate the effectiveness of a virtual lecturer’s expressions on the students’ learning outcomes in a virtual pedagogical environment. A second follow-up experiment then focussed on the effectiveness of a single facial expression (the smile) on student performance. Both experiments involved virtual lectures, with virtual lecturers teaching real students. Results indicated that students performed better (by 86%) in the lectures where the virtual lecturer performed facial expressions compared to the results of the lectures that did not use facial expressions. However, this applied only for reasonably complex instructional material; when simple or basic instructional material was used the facial expressions of the virtual lecturer had no substantial effect on the students’ learning outcome. Finally, it was demonstrated that the appropriate use of smiling increased the interest of the students and consequently their performance.Item Metadata only Fostering the user interface acceptance in customer relationship management: A multimedia-aided approach(IEEE, 2012) Alotaibi, M. B.; Rigas, D.Item Metadata only Guidelines for edutainment in E-learning systems.(2011) Rigas, D.; Ayad, K.Item Metadata only An Initial study into a multimodal note-taking system.(2009) Sallam, Mohamed; Rigas, D.Item Metadata only Learning with Edutainment: A multi-platform approach.(World Scientific and engineering Academy, 2009) Ayad, K.; Rigas, D.Item Metadata only Multimodal metaphors for note taking in E-learning.(2011) Rigas, D.; Sallam, M.Item Metadata only Speech displaces the graphical crowd(ACADEMY PUBLISHER, 2008) Alsuraihi, Mohammad M.; Rigas, D.Developers of visual Interface Design Environments (IDEs), like Microsoft Visual Studio and Java NetBeans, are competing in producing pretty crowded graphical interfaces in order to facilitate completion of interface-design tasks. Previous studies have shown that such interfaces cause the user to experience information overload as well as they create a fertile environment for usability problems. In this paper, we empirically investigate speech as an input and output means for solving usability problems with GUI interaction metaphors and enhancing usability of visual IDEs. The empirical investigation aimed at measuring usability of two experimental ID toolkits: typical visual-only (TVOID) and multimodal (MMID) in terms of efficiency, effectiveness and satisfaction. Usability of these two environments was tested twice, over two experimental phases, by four independent groups of users. The first experimental phase was for measuring usability by novel users in order to explore how learnable each of the two experimental toolkits would be. The second phase aimed at measuring usability by well-trained users to study experienced user performance when using a speech recognition ID.