146,917 research outputs found
Recommended from our members
Mobile collaborative video
The emergence of pico projectors as a part of future mobile devices presents unique opportunities for collaborative settings, especially in entertainment applications, such as video playback. By aggregating pico projectors from several users, it is possible to enhance resolution, brightness, or frame rate. In this paper we present a camera-based methodology for the alignment and synchronization of multiple projectors. The approach does not require any complicated ad hoc network setup among the mobile devices. A prototype system has been set up and used to test the proposed techniques
iBingo mobile collaborative search
This paper describes a collaborative video search system for mobile devices, 'iBingo'. It supports division of labour among users, providing search results to colocated iPod Touch devices
Mobile, ubiquitous information seeking, as a group: the iBingo collaborative video retrieval system
iBingo features two or more users performing collaborative information seeking tasks, using mobile devices, Apple iPod iTouch in our case. The novelty in our work is that the system, called iBingo, mediates the collaborative searches among the users and performs a realtime division of labour among co-searchers so users are presented with documents which are both unique and tailored to the individual. This enables each user to explore unique subsets of the retrieved information space. We demonstrate iBingo mobile collabo-rative search on a video collection from TRECVid 2007
Synote mobile HTML5 responsive design video annotation application
Synote Mobile has been developed as an accessible cross device and cross browser HTML5 webbased collaborative replay and annotation tool to make web-based recordings easier to access, search, manage, and exploit for learners, teachers and others. It has been developed as a new mobile HTML5 version of the award winning open source and freely available Synote which has been used since 2008 by students throughout the world to learn interactively from recordings. While most UK students now carry mobile devices capable of replaying Internet video, the majority of these devices cannot replay Synote’s accessible, searchable, annotated recordings as Synote was created in 2008 when few students had phones or tablets capable of replaying these videos
Mobilizing Journalism Education
This paper evaluates several examples of integrating mobile social media within new pedagogical frameworks applied to journalism education, representing the reified activity of a journalism lecturer community of practice. We propose a mobile social media framework as a catalyst for new pedagogies that support student participation within a professional community. The framework leverages Skype and Twitter for facilitating authentic collaborative student-directed projects, establishing student eportfolios using a collage of social media, curating and critiquing mobile social media source material around news events using Storify, and the use of new and emerging collaborative mobile video applications such as Vyclone and Vine
QoE-based mobility-aware collaborative video streaming on the edge of 5G
Today's Internet traffic is dominated by video streaming applications transmitted through wireless/cellular interfaces of mobile devices. Although ultrahigh-definition videos are now easily transmitted through mobile devices, video quality level that users perceive is generally lower than expected due to distance-based high latency between sources and end-users. Mobile edge computing (MEC) paradigm is expected to address this issue and provide users with higher perceived quality of experience (QoE) for latency-critical applications, deploying MEC servers at edges. However, due to capacity concerns on MEC servers, a more comprehensive approach is needed to meet users' expectations applying all possible operations over the resources such as caching, prefetching, and task offloading policies depending on the data repetition or memory/CPU utilization. To address these issues, this article proposes a novel collaborative QoE-based mobility-aware video streaming scheme deployed at MEC servers. Throughout the article, we demonstrate how the proposed scheme can be implemented so as to preserve the desired QoE level per user during entire video sessions. Performance of the proposed scheme has been investigated by extensive simulations. In comparison to existing schemes, the results illustrate that high efficiency is achieved through collaboration among MEC servers, utilizing explicit window size adaptation, collaborative prefetching, and handover among the edges
Recommended from our members
On Optimal and Fair Service Allocation in Mobile Cloud Computing
This paper studies the optimal and fair service allocation for a variety of
mobile applications (single or group and collaborative mobile applications) in
mobile cloud computing. We exploit the observation that using tiered clouds,
i.e. clouds at multiple levels (local and public) can increase the performance
and scalability of mobile applications. We proposed a novel framework to model
mobile applications as a location-time workflows (LTW) of tasks; here users
mobility patterns are translated to mobile service usage patterns. We show that
an optimal mapping of LTWs to tiered cloud resources considering multiple QoS
goals such application delay, device power consumption and user cost/price is
an NP-hard problem for both single and group-based applications. We propose an
efficient heuristic algorithm called MuSIC that is able to perform well (73% of
optimal, 30% better than simple strategies), and scale well to a large number
of users while ensuring high mobile application QoS. We evaluate MuSIC and the
2-tier mobile cloud approach via implementation (on real world clouds) and
extensive simulations using rich mobile applications like intensive signal
processing, video streaming and multimedia file sharing applications. Our
experimental and simulation results indicate that MuSIC supports scalable
operation (100+ concurrent users executing complex workflows) while improving
QoS. We observe about 25% lower delays and power (under fixed price
constraints) and about 35% decrease in price (considering fixed delay) in
comparison to only using the public cloud. Our studies also show that MuSIC
performs quite well under different mobility patterns, e.g. random waypoint and
Manhattan models
Integrating Mobile Web 2.0 within tertiary education
Based on three years of innovative pedagogical development and guided by a participatory action research
methodology, this paper outlines an approach to integrating mobile web 2.0 within a tertiary education
course, based on a social constructivist pedagogy. The goal is to facilitate a student-centred, collaborative,
flexible, context-bridging learning environment that empowers students as content producers and learning
context generators, guided by lecturers who effectively model the use of the technology. We illustrate how
the introduction of mobile web 2.0 has disrupted the underlying pedagogy of the course from a traditional
Attelier model (face-to-face apprenticeship model), and has been successfully transformed into a context
independent social constructivist model. Two mobile web 2.0 learning scenarios are outlined, including; a
sustainable house design project (involving the collaboration of four departments in three faculties and three
diverse groups of students), and the implementation of a weekly ‘nomadic studio session'. Students and
lecturers use the latest generation of smartphones to collaborate, communicate, capture and share critical and
reflective learning events. Students and lecturers use mobile friendly web 2.0 tools to create this
environment, including: blogs, social networks, location aware (geotagged) image and video sharing, instant
messaging, microblogging etc… Feedback from students and lecturers has been extremely positive
- …