Video streaming over the Internet has gained popularity during the recent years which is mainly the result of the introduction of video-conferencing and video-telephony. These in turn have made it possible to bring to life many applications such as transmitting video over the Internet and telephone lines, surveillance and monitoring, telemedicine (medical consultation and diagnosis at a distanc...

Video streaming over the Internet has gained significant popularity during the last years, and the academy and industry have realized a great research effort in this direction. In this scenario, scalable video coding (SVC) has emerged as an important video standard to provide more functionality to video transmission and storage applications. This paper proposes and evaluates two strategies base...

Peer-to-Peer (P2P) video caching is a promising approach to accommodate asynchronous requests from cached content at individual peers. However, coherently managing a distributed, heterogeneous, dynamic and potentially large scale cache space is a challenging task. In particular, a key challenge is to effectively control the number of cached copies for popular streams in order to accommodate the...

Public speaking is an important aspect of human communication and interaction. The majority of computational work on public speaking concentrates on analyzing the spoken content, and the verbal behavior of the speakers. While the success of public speaking largely depends on the content of the talk, and the verbal behavior, non-verbal (visual) cues, such as gestures and physical appearance also...

The increasing popularity of network-based multimedia applications poses many challenges for content providers to supply efficient and scalable services. Peer-to-peer (P2P) systems have been shown to be a promising approach to provide large-scale video services over the Internet since, by nature, these systems show high scalability and robustness. In this paper, we propose and analyze an object...

In broadcasting schemes generally the bandwidth is allocated statically to the popular videos. However, this assumption may not always hold true as the popularity of a video changes, i.e., increases or decreases over a period of time. Thus, the bandwidth allocated to the video should also be adapted accordingly, and at the same time, the user services should not get disrupted. This concept is c...

Nowadays Higher Education is adopting new ways of teaching such as ways of Video-Based Learning (VBL) with the aim of moving away from the traditional classrooms. Video lectures have been growing in popularity and their use is increasing both inside and outside classrooms (Giannakos, 2013). “Many higher education institutions and educational technology companies are using them as a main of self...

As the popularity of video games continues to grow, we see the medium as an increasingly important venue for giving young learners an opportunity to engage in constructionist learning. This paper introduces RoboBuilder, a blocks-based programming game that draws on constructionist design principles as well as video game norms to create a fun, challenging computational learning environment. Afte...

Launched in 2005 as a video-sharing website, YouTube has become an emblem of participatory culture. A central feature of this website is the dazzling number of derivative videos, uploaded daily by many thousands. Using the ‘meme’ concept as an analytic tool, this article aims at uncovering the attributes common to ‘memetic videos’ – popular clips that generate extensive user engagement by way o...