Explicating the challenges of providing novel media experiences driven by user personal data

The turn towards personal data to drive novel media experiences has resulted in a shift in the priorities and challenges associated with media creation and dissemination. This paper takes up the challenge of explicating this novel and dynamic scenario through an interview study of employees delivering diverse personal data driven media services within a large U.K. based media organisation. The results identify a need for better interactions in the user-data-service ecosystem where trust and value are prioritised and balanced. Being legally compliant and going beyond just the mandatory to further ensure social accountability and ethical responsibility as an organisation are unpacked as methods to achieve this balance in data centric interactions. The work also presents how technology is seen and used as a solution for overcoming challenges and realising priorities to provide value while preserving trust within the personal data ecosystem

Internet Protocol TV in Perspective

The telecommunications firms have continually attempted to introduce a new intelligent television system for the past thirty-plus years by making the best use of ever-developing information and communication technologies, changes in media consumption patterns, collapse of regulatory barriers, and so on. Internet protocol TV (IPTV) is the most recent version of such corporate attempts. This article contextualizes IPTV in terms of its history, identity, and challenges. Despite the rhetoric of newness, IPTV is a replica of the interactive TV of the past, which has a turbulent genealogy of its own. Even with the interactive services based upon advanced IP technology, it is not structurally different from conventional television as the medium is organized following the TV model. In addition to competition, a contradiction between the open internet and walled-garden IPTV will pose critical challenges to the medium. However, IPTV is still evolving, and its future is not yet fully determined. </jats:p

Aerodynamic performance prediction of SG6043 airfoil for a horizontal-axis small wind turbine

Abstract In order to design a small wind turbine, the performance of SG604x airfoil and previously existing 15 airfoils was reviewed at a Reynolds number of 300,000, which suggests the maximum lift-to-drag ratio of the airfoils, corresponding lift coefficient, and the maximum lift coefficient for both free and fixed transition. The SG6043 airfoil provides enhanced lift-to-drag ratio performance as compared with previously existing airfoils at a Reynolds number of 300,000. Only a SG6043 airfoil for small wind turbine performance prediction is applied along the length of the blades. This is why a blade constructed using airfoils of different performance may not exhibit the expected performance. A code based on BEMT(Blade Element/Momentum Theory) was used for performance predictions of small horizontal axis wind turbine. As important input parameter of BEMT, distributions of chord and twist was derived by the optimization method using genetic algorithm. The power performance prediction of airfoil data of SG6043 using BEMT is presented over a wide range of wind speeds. The results of BEMT using SG6043 show that the rated wind speed can be reduced to 10 m/s for a rotor radius of 7.25m and a rating of 32kW. The reduced rated wind speed would increases the annual capacity factor as compared the existing airfoils.</jats:p