Revista Romana de Interactiune Om-Calculator

23-34

Authors: Ion Smeureanu, Narcisa Isaila

The innovative learning environments are a preoccupation for both educators and developers, this concern being encouraged by information technologies which are in a continuous development. On the other hand, European legislation encourages the creation of learning environments based on the innovative teaching methods, taking into account the principle of "lifelong learning". Closely related to the purpose of education, in terms of informatics, it is desirable that by coupling the learning components at lesson level to be diminished the effort to integrate educational resources into an innovative environment, highly personalized and adapted to the learning needs of students. The paper aims to investigate the extent to which the components technology allows to achieve this, taking into account the benefits for students and teachers, through releasing the capacities of creativity and innovativity.

57-78

Authors: Stefan Trausan-Matu

Polyphonic music and counterpoint are a model for creativity because they appeared naturally in musical composition processes for developing a theme in the context of a community of voices and they were validated by listeners. The paper studies how polyphony, counterpoint, ventriloquism may be a model of creativity and, particularily, of knowledge building in virtual collaborative systems on the web. As I mentioned in previous papers, colaborative interfacing tools may stimulate inter-animation, with beneficial effects on creativity fostering. Repetitions and echoes of words make them get a special importance, sometimes becoming artefacts. The paper presents several examples that evidentiate the polyphonic concepts in chat conversations in which appear micro-creativity processes.

97-109

Authors: Emil Stanescu

In this period ends switchover from analogue to digital TV. At the same time is accelerating the pace of diversifying multimedia resources, facilities offered by the receiving devices and communication technologies transmitting multimedia content. In this context, the factors that influence consumer satisfaction with multimedia content transmitted through digital TV services and, possibly, through the Internet, is an important indicator for the user loyalty to a service provider. In the article we make an analysis of the link between three important concepts in the provision of digital multimedia: QoS, QoE and customer satisfaction. Digital television brings picture quality elements that positively influences QoE. But, if TV service provider not effectively controls the encoding parameters of the video stream and does not allocate sufficient transmission bandwidth, it can lead to degradation of received images, leading to lower QoE and lower loyalty for TV service provider. Another factor influencing QoE is interactivity, and, in this paper, we present a method of selecting important events in the video stream so that they can subsequently be requested on demand by subscribers.