Revista Romana de Interactiune Om-Calculator

111-132

Authors: Dragos Daniel Iordache, Ioan Neacsu

In the first part of this paper are presented a set of educational characteristics of some teaching systems based on augmented reality technology. Next sections presents some results from the user testing of an augmented reality technology adapted for biology and chemistry study in the scholar environment. The evaluation was focussed on effectiveness and efficiency measures of users who tested the augmented reality platform developed in ARiSE (Augmented Reality in School Environment) project. These results where determined based on analysis of log files for each user. In parallel with this activity, before and after testing sessions, has been evaluated those student’s knowledge at biology and chemistry which are related on the specific tasks of didactical scenario in augmented reality platform. By comparing the level of student’s knowledge before and after working with augmented reality platform, we tried to determine the eventually formative valences associated with this new technology. The results show that students achieved much better performances to the knowledge tests after working with augmented reality platform (ARTP). Therewith the quantitative measures obtained from log files analysis offered useful information regarding usability problems and task-solving behavior.

145-162

Authors: Irina Cristescu

Some circumstances have shown that pupils and students tend to better understand the information from their colleagues than their teachers or professors as cooperation contributes to achieving social development and interpersonal attitudes in the classroom. Because learning is an interactiv process of knowledge construction, social actors tend to negotiate and contribute to finding meanings concerning the information needed. In the same time the learning environment must provide the student with the help he needs to develop his own abilities concerning knowledge construction. The celerity of technology spreading and accessibility on the market contributes to fufiling these desiderata even in the educational area. The use of augmented reality platform is an example of computer supported collaborative learning method. With the help of the computer is presented the task’s context which influences the interaction among pupils and students through collaboration during task completion. This explains the different advantages regarding the analysis and understanding of the flux of information: stimulating the collaboration, reduced time for learning, negotiating the meanings of information analysis, negotiating the roles each individual plays in the context of collaboration.

25-38

Authors: Ana Maria Marhan

As computers and internet are becoming an increasingly prominent presence in our daily life, a stronger need to better understand the behavior of persons using these technologies emerges as well. During the recent years, the psychological concept of flow has been providing the theoretical and methodological framework for several research studies on user experience in web navigation, e-commerce, electronic gaming or e-learning, among others. It was Mihalyi Csikszentmihalyi who, back in the 70s, proposed flow as a coined term describing the psychological state experienced by a person fully immersed in an activity that is performed with a maximum efficiency, producing satisfaction, and an overall positive emotional state. Among other benefits of experiencing flow in daily or professional activities, as well as in interacting with new technology, the studies undertaken by now have been repeatedly emphasizing: a better learning efficiency, intensifying the exploratory behavior, positive emotional experience, feeling of control, but also impact on users’ interaction patters, for instance by increasing the number of revisiting of the same website. The phenomena described above will be discussed in this article, with the specific aim to provide an analysis of the main components of flow experience, of the relationships among them, as well as of their potential to inform the design of user interaction with the new technologies.

57-72

Authors: Costin-Gabriel Chiru, Stefan Trausan-Matu, Traian Rebedea

The Web pages have been intensively used lately for automatic or semiautomatic extraction of useful information. Because of the open nature of the Web, the texts that have no spelling errors are very rare exceptions. One of the most wide-spread errors in Internet texts is the malapropism. Thus, malapropism detection and correction algorithms have been investigated. The detection algorithms are based on text cohesion while the correction algorithms use precompiled paronyms dictionaries. Therefore, it is very important to identify efficient algorithms for generating paronyms. In the present paper, we make an overview presentation of the paronyms and of the methods that can be used in order to build a paronyms dictionary. A presentation of the main errors that can lead to malapropism is also provided and the way these errors can be corrected using a paronyms dictionary is suggested.