Seven HCI Grand Challenges

This article aims to investigate the Grand Challenges which arise in the current and emerging landscape of rapid technological evolution towards more intelligent interactive technologies, coupled with increased and widened societal needs, as well as individual and collective expectations that HCI, as a discipline, is called upon to address. A perspective oriented to humane and social values is adopted, formulating the challenges in terms of the impact of emerging intelligent interactive technologies on human life both at the individual and societal levels. Seven Grand Challenges are identified and presented in this article: Human-Technology Symbiosis; Human-Environment Interactions; Ethics, Privacy and Security; Well-being, Health and Eudaimonia; Accessibility and Universal Access; Learning and Creativity; and Social Organization and Democracy. Although not exhaustive, they summarize the views and research priorities of an international interdisciplinary group of experts, reflecting different scientific perspectives, methodological approaches and application domains. Each identified Grand Challenge is analyzed in terms of: concept and problem definition; main research issues involved and state of the art; and associated emerging requirements

Faye: An Empathy Probe to Investigate Motivation Among Novice Runners

The popularity of recreational sports such as running, has increased substantially due to its low threshold to start and it is attractive for a wide range of people. However, despite the growing popularity, running has a high drop-out rate due to injuries and motivational loss, especially among novice runners. To investigate factors influencing motivation among novice runners and design opportunities, we deployed an empathy probe at a women-only running event. Faye is a running shirt that reveals motivational feedback on the shirt, during the warm-up phase of the run. In this paper, we both inform on the impact of motivational feedback while warming up on running motivation and reflect on the use of an empathy probe to investigate motivational strategies among novice runners. © 2020, Springer Nature Switzerland AG

An optimal design of contactless power transfer system applied for electric vehicles using electromagnetic resonant coupling

Over the past decades, contactless power transfer (CPT) has been acquiring considerable attentions for investigations on wireless power transmitting (WPT) based electric vehicles (EV) charging solutions. This paper describes a geometrically improved CPT system using innovative H-shape ferrite core prototype and electromagnetically analytical methods. In order to address the key issues such as system power transfer rating levels, maximization of system efficiency and charging distance of two coils, the CPT prototype in this paper focuses on operating frequencies, coupling distances and electromagnetic performances. This H-shape CPT prototype has been modelled in 3D finite element method (FEM) environment, resulting in a maximum coil transmitting efficiency of 63%, an optimal system efficiency of over 40% and a maximum RMS real power of 20.39 kW on the load end, with an air gap of 30 mm. Moreover, the H-shape system with 20-mm air gap could be measured to output an RMS real power of 31.95 kW on the load of the CPT system, achieving a maximum coil transmitting efficiency and overall system efficiency of over 77% and 47%, respectively. Furthermore, from the perspective of electromagnetics, the proposed CPT coupling design in this paper tends to appear advantages on electromagnetic field performance by analyzing the generated parameters of flux linkage, flux line distributions, magnetic flux density and so on. In addition, the limitations and future works on the CPT technologies for EV have been discussed in this research paper