Zoran Constantinescu

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New technological developments have made it possible to interact with computer systems and applications anywhere and anytime. It is vital that these applications are able to adapt to the user, as a person, and to its current situation, whatever that is. Therefore, the premises for evolution towards a learning society and a knowledge economy are present.(More)
Increasing hardware performance of desktop computers accounts for a low-cost computing potential that is waiting to be efficiently used. However, the complexity of installation and maintenance of a large number of distributed heterogeneous computers is limiting the use of such systems on a large scale. Systems which are autonomic, capable of managing(More)
This paper overviews some aspects of using different levels of accuracy and complexity for the visualization of large data sets. Current status of the volume of data sets that can be generated is presented, together with some of the inherent problems due to such large data volumes, visualization requirements, and display limitations of existing hardware(More)
In spite of the scale, popularity, and importance of the open courseware movement for users worldwide, there is yet no quality assessment framework that could support users on their quest for finding the most appropriate learning resource with regard to their educational needs. This paper presents both an evaluation and a comparison between three open(More)
Finding effectively open educational resources and open courseware that are the most relevant and that have the best quality for a specific user's need, in a particular context, becomes more and more demanding. Hence, even though teachers and learners (enrolled students or self-learners as well) get to a greater extent support in finding the right(More)
The recent growth of computational power of desktop computers calls for their efficient use in larger organizations , especially those, which need to run computa-tionally intensive tasks, such as universities and research centers. We describe É ¾ È ['kwod " pi: 'si:], a modular, open source implementation in C++ of a multiuser and multi-platform system for(More)