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Web 2.0 i mobilne media w procesie uczenia się studentów : analiza wyników badań własnych

Andrzejewska M., Stolińska A., Pituła A.

Zeszyty Naukowe. Studia Informatica / Uniwersytet Szczeciński

2012

Nr 30

7--25

The evolution of the World Wide Web, wireless technologies and mobile devices has a significant impact on education. More and more often different educational forecasts indicate rapid process of changes including the rise of e-learning and multimedia in learning and teaching. Nowadays, an integral part of students’ everyday life is the use of mobile devices and applications. Taking under consideration young people’s flexibility in a world of new technology, it seems that they are able to integrate the acquisition of knowledge as their natural activity in the area of digital communication. The article shall be an attempt to diagnose the present state of use of the latest technological tools by students in the broad sense of learning. Research results that answer the question of what tools of present day Internet, especially Web 2.0 technology students use shall be presented. Authors of the paper interest shall also be students’ activity in the area of mobile education techniques, including the circumstancesand ways of using the potential of these measures in the process of self-education.

A proposition of mobile fractal image decompression

Nikiel S.

International Journal of Applied Mathematics and Computer Science

2007

Vol. 17, no 1

129-136

Multimedia are becoming one of the most important elements of the user interface with regard to the acceptance of modern mobile devices. The multimodal content that is delivered and available for a wide range of mobile telephony terminals is indispensable to bind users to a system and its services. Currently available mobile devices are equipped with multimedia capabilities and decent processing power and storage area. The most crucial factors are then the bandwidth and costs of media transfer. This is particularly visible in mobile gaming, where textures represent the bulk of binary data to be acquired from the content provider. Image textures have traditionally added visual realism to computer graphics. The realism increases with the resolution of textures. This represents a challenge to the limited bandwidth of mobile-oriented systems. The challenge is even more obvious in mobile gaming, where single image depicts a collection of shots or animation cycles for sprites and a backdrop scenery. In order to increase the efficiency of image and image texture transfer, a fractal based compression scheme is proposed. The main idea is to use an asymmetric server-client architecture. The resource demanding compression process is performed on the server side while the client part decompresses highly packed image data. The method offers a very high compression ratio for pictures representing image textures for natural scenes. It aims to minimize the transmission bandwidth that should speed up the downloading process and minimize the cost and time of data transfer. The paper focuses on the implementation of fractal decompression schemes suitable for most mobile devices, and opens a discussion on fractal image models for limited resource applications.