Supporting Worth Mapping with Sentence Completion

Expectations for design and evaluation approaches are set by the development practices within which they are used. Worth Centred Development (WCD) seeks to both shape and fit such practices. We report a study that combined two WCD approaches. Sentence completion gathered credible quantitative data on user values, which were used to identify relevant values and aversions of two player groups for an online gambling site. These values provided human value elements for a complementary WCD approach of worth mapping. Initial worth maps were extended in three workshops, which focused on outcomes and user experiences that could be better addressed in the current product and associated marketing materials. We describe how worth maps were prepared for, and presented in, workshops, and how product owners and associated business roles evaluated the combination of WCD approaches. Based on our experiences, we offer practical advice on this combinination

Investigating the social value of the Ripon rivers flood alleviation scheme

This paper argues for an approach to flood alleviation design that considers the need not only for technical knowledge, but also a social perspective. It is predicted that more intense rainfall and rising sea levels will result in a greater number of people vulnerable to flood events. Flood alleviation design in the UK is often focused upon technical and cost-effective solutions, and consideration of social impact is seen as secondary. This paper examines how the social value of a UK flood alleviation scheme is perceived and discussed, by the local community and by those responsible for the design of the scheme, and exposes differences in perceptions both between and within these two groups. It recommends a future approach in which an understanding of the social value of a flood alleviation scheme is first co-produced with the community affected, enabling the design of a socially acceptable and successful project.The research presented in this paper is part of a larger study. The research is conducted with the aid of funding from an Engineering and Physical Sciences Research Council (EPSRC) iCASE doctoral award. Ove Arup and Partners also provide sponsorship as part of the award.This is the final version of the article. It first appeared from Wiley via http://dx.doi.org/10.1111/jfr3.1217

Horizons: nuclear astrophysics in the 2020s and beyond

Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, diversity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities

Horizons: Nuclear Astrophysics in the 2020s and Beyond

Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, diversity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities.Comment: 96 pages. Submitted to Journal of Physics

Horizons: nuclear astrophysics in the 2020s and beyond

Nuclear astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the chemical elements. This white paper summarizes progress and status of the field, the new open questions that have emerged, and the tremendous scientific opportunities that have opened up with major advances in capabilities across an ever growing number of disciplines and subfields that need to be integrated. We take a holistic view of the field discussing the unique challenges and opportunities in nuclear astrophysics in regards to science, diversity, education, and the interdisciplinarity and breadth of the field. Clearly nuclear astrophysics is a dynamic field with a bright future that is entering a new era of discovery opportunities

Modified Dual Active Bridge Photovoltaic Inverter for Solid State Transformer Applications

2014 International Symposium on Fundamentals of Electrical Engineering (ISFEE) -- NOV 28-29, 2014 -- Univ Politehn Bucharest, Bucharest, ROMANIAWOS: 000380570500081The solid state transformer (SST) was announced as the one of the most emerging technology by the Massachusetts institute of technology (MIT). An SST generally includes a DC or AC buses in high and/or low voltage side in order to connect the external input sources to the SST. We proposed discontinues conduction mode (DCM) modified dual active bridge inverter topology for integrating photovoltaic (PV) panels to SST. The proposed inverter achieves soft switching, hence it has high efficiency. Moreover, it can be operated by open loop control with eliminating high frequency current sensor. In this paper, the analysis of the proposed inverter is presented, and simulation results are given for validating the proposed inverter.Univ Politehn Bucharest,Fac Elect Engn,Elect Engn Dept, Assoc Romanian Elect Elect Engineers, IEEE Romania Sect CAS/CS Chapter, IEEE Advancing Technol Human, Minist Natl Edu

Bi-directional DCM DAB inverter for SST applications

2014 International Symposium on Fundamentals of Electrical Engineering, ISFEE 2014 -- 28 November 2014 through 29 November 2014 -- 111132Generally, conventional single phase solid state transformer (SST) topologies includes three stage conversions. In the first stage, AC/DC conversion accomplished for transforming high voltage AC (HVAC) to high voltage DC (HVDC). From HVDC, low voltage DC is obtained at the second stage, and low voltage AC is formed at the third stage. Three stage conversions are suitable for connecting renewable energy sources through low voltage DC (LVDC). However, all of the stages are switched at high switching frequency. Hence, this situation may bring high switching losses, high control complexity and lower efficiency. In this paper, we proposed bi-directional current source discontinues conduction mode (DCM) Dual Active Bridge (DAB) inverter. In the proposed inverter, HVDC is transformed to LVAC in one high frequency switching stage. Hence, it eliminates the third stage of three stage conventional SST. On the other hand, renewable energy sources can be connected to the proposed converter through LVAC bus. In this paper, the analysis of the proposed inverter is presented, and simulation results are given under resistive and inductive loads for validating the proposed inverter. © 2014 IEEE

Modified dual active bridge photovoltaic inverter for solid state transformer applications

2014 International Symposium on Fundamentals of Electrical Engineering, ISFEE 2014 -- 28 November 2014 through 29 November 2014 -- 111132The solid state transformer (SST) was announced as the one of the most emerging technology by the Massachusetts institute of technology (MIT). An SST generally includes a DC or AC buses in high and/or low voltage side in order to connect the external input sources to the SST. We proposed discontinues conduction mode (DCM) modified dual active bridge inverter topology for integrating photovoltaic (PV) panels to SST. The proposed inverter achieves soft switching, hence it has high efficiency. Moreover, it can be operated by open loop control with eliminating high frequency current sensor. In this paper, the analysis of the proposed inverter is presented, and simulation results are given for validating the proposed inverter. © 2014 IEEE