A requirement analysis for a multi-party conferencing testbed

Current videoconferencing services such as Skype and Google+Hangouts provide mechanisms for engaging in multi-party conversations. Although these services provide basic support, they lack functionalities that take into account the users roles and context. Currently, the multimedia research community is actively engaged in conducting experiments concerning Quality of Experi- ence (QoE). This paper provides a requirement analy- sis for a multi-party conferencing testbed, that is de- signed for conducting controlled telecommunication ex- periments for assessing QoE. A pre-study, in the form of an online survey, investigated the experience with pre- vious tools and identified the interest towards using the CWI tool for future studies. Requirements are derived through semi-structured interviews by looking into the experimental process and issues that stakeholders are currently facing. Results show that having the capabil- ity to pre-define the experimental conditions and man- ually adjust these throughout the experiment are inte- gral aspects within the tool. Furthermore, various con- trol possibilities to interact with the test participants are needed. Subjective assessment integration in the form of questionnaires and logging of technical condi- tions are important requirements to support the anal- ysis phase. Documentation, coding support and easy customizability are crucial aspects influencing the over- all tool usability. The listed requirements provide a framework for further development of QoE assessment tools in the area of telecommunication studies and, furthermore, contribute to the open-source development of the multi-party conferencing testbed

Discussion Analytics: Identifying Conversations and Social Learners in FutureLearn MOOCs

Discussion among learners in MOOCs has been hailed as beneficial for social constructive learning. To understand the pedagogical value of MOOC discussion forums, several researchers have utilized content analysis techniques to associate individual postings with differing levels of cognitive activity. However, this analysis typically ignores the turn taking among discussion postings, such as learners responding to others’ replies to their posts, learners receiving no reply for their posts, or learners just posting without conversing with others. This information is particularly important in understanding patterns of conversations that occur in MOOCs, and learners’ commenting behaviors. Therefore, in this paper we categorize comments in a FutureLearn MOOC based on their nature (post vs. reply to others’ post), classify learners based on their contributions for each type of post-ing, and identify conversations based on the types of comments composing them. This categorization quantifies the dynamics of conversations in the discussion activities, allowing monitoring of on-going discussion activities in FutureLearn and further analysis of identified conversations, social learners, and course steps with an unusually high number of a particular type of comment

A reduced reference video quality assessment method for provision as a service over SDN/NFV-enabled networks

139 p.The proliferation of multimedia applications and services has generarted a noteworthy upsurge in network traffic regarding video content and has created the need for trustworthy service quality assessment methods. Currently, predominent position among the technological trends in telecommunication networkds are Network Function Virtualization (NFV), Software Defined Networking (SDN) and 5G mobile networks equipped with small cells. Additionally Video Quality Assessment (VQA) methods are a very useful tool for both content providers and network operators, to understand of how users perceive quality and this study the feasibility of potential services and adapt the network available resources to satisfy the user requirements

Introducing Wireless Grids Technology to the Field of Telemedicine

While telemedicine and technology-enabled education are not new concepts and have significant bodies of research, in depth application to management and treatment of veteran Post-Traumatic Stress Disorder (PTSD) and Traumatic Brain Injury (TBI) is relatively new. The conflicts in the Southwest Asia over the last two decades have significantly increased the need for healthcare and support services for these returning warriors. Creative thinking and innovative technologies are needed to meet the growing and changing demand of these patients in the face of many competing demands within the U.S. healthcare sector. This doctoral research study investigated the potential for a platform-agnostic (ad hoc) networking technology to serve as a trusted social networking and training platform for healthcare providers who are striving to provide quality healthcare that meets the needs of veterans suffering from PTSD and TBI. This research study analyzed the effectiveness of a digitally networked environment to deliver desired training and certification outcomes in a military healthcare environment. The level of acceptance of an ad hoc network technology (GridstreamRx) by healthcare professionals using it as an enabler of collaboration during the training process was evaluated. The results also assessed the readiness of healthcare professionals to use this Information Communications Technology (ICT), or analogous new applications and services, to help them perform their healthcare responsibilities. This thesis study, accomplished with the support of the U.S. Army and National Science Foundation, took place at two large military medical centers over a twelve-month period of time. Data was gathered from 568 healthcare professionals using quantitative survey instruments. Ninety-six respondents provided additional quantitative and qualitative inputs at various times during a proscribed training regimen. DeLone and McLean\u27s 2003 Information System Success Model, modified by findings of more recent research, provided the theoretical lens for analyzing the data from 32 of the training participants in determining the perceived net benefit of the GridstreamRx technology. The data gathered for the study showed, at the 95% level of confidence, that a majority of the professionals of these two medical centers would perceive a positive net benefit from using GridstreamRx in a healthcare training environment. The conclusion from this analysis was that not only are the healthcare providers in this study ready to use ICT and social networking in this professional setting, but also that GridstreamRx is an acceptable platform for performing these functions. The study participants provided input with respect to their priorities regarding information sharing techniques, functionality, and suggestions for improving the platform. The outcomes confirmed that GridstreamRx can be a successful introduction of ad hoc networking to telemedicine. This thesis concluded with recommendations for scholars and practitioners to pursue in the future; and should be followed up with further research and actions in order to build toward a Fully Integrated Virtual Healthcare Environment (FivHe)