Sotirios Kontogiannis

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Web-based learning environments are extensively used nowadays. These environments maintain and produce vast amounts of data. Such vastness lead to the application of data mining techniques so as to further improve usability and qualify e-learning platform courses content. This paper proposes a platform dependant framework for recording, processing and(More)
—Earlier studies suggest that educational institutions may further benefit from Learning Management Systems (LMSs) by generating reports regarding courses. That is, with the use of tools focus to assess student's paths into course content. This paper affirms that educational meaningful information can be extracted from LMS student logged data and presents a(More)
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We investigate the energy-saving potential of transport protocols. We focus on the system-related aspect of energy. Do we have to damage or enhance system fairness in order to provide energy efficiency? We depart from defining protocol potential; we compare different transmission strategies and protocol mechanisms; and we report our results on the impact of(More)
The usage of web applications can be measured with the use of metrics. In a LMS, a typical web application, there are no appropriate metrics which would facilitate their qualitative and quantitative measurement. The purpose of this paper is to propose the use of existing techniques with a different way, in order to analyze the log file of a typical LMS and(More)