Designing a Decentralized Distributed Self-Adaptive System in M-Learning Activities

Abstract

The use of mobile technologies in education has increased the amount of tools that can be used for pedagogical purposes. However, the introduction of these technologies comes with challenges that require from attention. The first of them is concerning with the limitations that these devices have in features when compared with laptop and desktop computers, naming the screen size, performance and memory space among others. A mechanism to address this limitation can be the combination of multiple devices in groups and share the resources within these groups. The second limitation that this paper addresses is with regard to these devices being prone to failures in relation with their availability, due to its battery life, connectivity, etc. This paper presents a decentralized distributed self-adaptive system that attempts to cover both the limitations in features of these devices, by combining the devices in organizations, named MVD, and the weakness in availability by providing a self-adaptation mechanism. Moreover, the paper presents the identified required components for the creation of a system that provides such benefits and illustrates the internal functionality of the system to provide the self-adaptive quality.

Intelligent Delivery of Multimedia Content in Mobile Environment

“…The scenario is consisted of two similar laboratories for M-learning that have wireless access point router and mobile clients. This way all the students using different mobile devices (smart phones, tablets and mobile phones [13]) can easy connect, through the wireless router, to the multimedia streaming server [14]. From the presented architecture we can determine that the bottleneck for multimedia delivery is from the multimedia streaming server to the switch.…”