Cloud-based Content Distribution on a Budget

To leverage the elastic nature of cloud computing, a solution provider must be able to accurately gauge demand for its offering. For applications that involve swarm-to-cloud interactions, gauging such demand is not straightforward. In this paper, we propose a general framework, analyze a mathematical model, and present a prototype implementation of a canonical swarm-to-cloud application, namely peer-assisted content delivery. Our system – called Cyclops – dynamically adjusts the off-cloud bandwidth consumed by content servers (which represents the bulk of the provider's cost) to feed a set of swarming clients, based on a feedback signal that gauges the real-time health of the swarm. Our extensive evaluation of Cyclops in a variety of settings – including controlled PlanetLab and live Internet experiments involving thousands of users – show significant reduction in content distribution costs (by as much as two orders of magnitude) when compared to non-feedback-based swarming solutions, with minor impact on content delivery times

Gaming techniques and the product development process : commonalities and cross-applications

The use of computer-based tools is now firmly embedded within the product development process, providing a wide range of uses from visualisation to analysis. However, the specialisation required to make effective use of these tools has led to the compartmentalisation of expertise in design teams, resulting in communication problems between individual members. This paper therefore considers how computer gaming techniques and strategies could be used to enhance communication and group design activities throughout the product design process

Research 2.0: How do we know about the users that do not tell us anything?

The OpenLearn initiative at the Open University offers free and open access to online material across a wide range of subjects. This material has been placed in on online environ- ment based on the Moodle learning environment together with additional tools for communicating with other users and creating knowledge maps. One of the design aims of the initiative was to be low barrier to access so all content is available without registration, though some tools and features will only work once registered. The result is that we are seeking to research a site that is publicly accessible and has a majority of users that do not iden- tify themselves, many of whom spend a short time on the site. As a further challenge the content itself is openly licensed using Creative Commons (http://creativecommons.org/) and can be taken and relocated on mirror servers, or accessed remotely through content feeds. The initiative has had to face this challenge and implemented a mixture of tracking, simplified surveys and the gathering of interesting stories. This approach has enabled us to spot interesting trends while remaining unsure about many of our users and their aims. The methods that we find we are using indicate a new style of research that can be related back to Web 2.0 as Research 2.0

ULS FY14 Planning and Budget Report

This document was submitted by the University Library System (ULS) to the University of Pittsburgh's provost's office on March 1, 2013. Incorporating the work of the ULS FY14 Planning Task Force, it reports ULS accomplishments for 2012-2013 and strategic priorities for 2013-2014

Delivering elder-care environments utilizing TV-channel based mechanisms

In this paper, we present a smart environment for elderly. What makes the development of such system challenging is that the concept of smartness for elderly brings to the extreme the idea of invisibility of the technology. In our experience, elders are well-disposed to new technologies, provided that those will not require significant changes - namely, they are invisible - to their habits. Starting from this consideration, 200 caregivers responses were collected by questionnaire, so as to better understand elders' needs and habits. A system was subsequently developed allowing elders to access a number of "modern web services" as standard TV channels: at channel 43 there is the health status, at channel 45 the photos of the family, at 46 the agenda of the week, just to mention few of the available services. The content of such services is automatically generated by the smart devices in the environment and is managed by the caregivers (e.g., family members) by simple web apps. Fourteen families were asked to install the system in their house. The results of these experiments confirm that the proposed system is considered effective and user-friendly by elders