ItemInter and intra signal variance in feature extraction and classification of affective state(Springer, 2023-02-23) Dair, Zachary; Dockray, Samantha; O’Reilly, Ruairi; Science Foundation IrelandPsychophysiology investigates the causal relationship of physiological changes resulting from psychological states. There are significant challenges with machine learning-based momentary assessments of physiology due to varying data collection methods, physiological differences, data availability and the requirement for expertly annotated data. Advances in wearable technology have significantly increased the scale, sensitivity and accuracy of devices for recording physiological signals, enabling large-scale unobtrusive physiological data gathering. This work contributes an empirical evaluation of signal variances acquired from wearables and their associated impact on the classification of affective states by (i) assessing differences occurring in features representative of affective states extracted from electrocardiograms and photoplethysmography, (ii) investigating the disparity in feature importance between signals to determine signal-specific features, and (iii) investigating the disparity in feature importance between affective states to determine affect specific features. Results demonstrate that the degree of feature variance between ECG and PPG in a dataset is reflected in the classification performance of that dataset. Additionally, beats-per-minute, inter-beat interval and breathing rate are identified as common best-performing features across both signals. Finally feature variance per-affective state identifies hard-to-distinguish affective states requiring one-versus-rest or additional features to enable accurate classification. ItemDesign probes in a pandemic: Two tales of hybrid radical placemaking from Ireland and Australia(Association for Computing Machinery, 2022) Slingerland, Geertje; Gonsalves, Kavita; Murray, MariaDesign probes, an essential research tool during the COVID-19 pandemic, are ancillary "personal" data gathering tools that enable researchers to enter the private world of research participants. This paper compares two case studies of design probes used during the pandemic for radical placemaking in hybrid digital-physical environments: Digital Art Summer School in Northrock, Ireland, with eleven participants, and Chatty Bench Project in Brisbane, Australia, with sixteen participants. The paper further expands on the design methodology of the probes and their deployment during the online radical placemaking projects. From the participant responses to the probes’ activities and interviews, both studies demonstrated that the probes fostered placemaking in digital environments during the pandemic. The paper concludes with three lessons on the potential of probes as a critical research instrument to enable creativity, build social capital and create bonds between people and places during uncertain and turbulent times. ItemA combined pyschophysical-modelling investigation of the mechanisms of tactile picture perception(2006-07) Davison, Andrew P.; Yger, Pierre; Chan, Jason S.; Newell, Fiona N.; Fregnac, Yves ItemPDC Places: Landscapes of participatory design in Ireland(Association for Computing Machinery (ACM), 2022-08-19) Storni, Cristiano; Morrissey, Kellie; Ciolfi, Luigina; Foley, SarahIreland has many established participatory design experts and enthusiasts, and a rich landscape of practice. PDC Place Ireland comprises of a series of panels, exhibitions, and workshops, and will bring together academics, research students and practitioners to explore current practices in participatory design enacted in Ireland and internationally. These events will map participatory research across a number of contemporary contexts including public health, architecture, policymaking, and disability. ItemFictional game elements: Critical perspectives on gamification design(Association for Computing Machinery (ACM), 2016-10-15) Rapp, Amon; Cena, Federica; Hopfgartner, Frank; Hamari, Juho; Linehan, ConorGamification has been widely accepted in the HCI community in the last few years. However, the current debate is focused on its short-term consequences, such as effectiveness and usefulness, while its side-effects, long-term criticalities and systemic impacts are rarely raised. This workshop will explore the gamification design space from a critical perspective, by using design fictions to help researchers reflect on the long-term consequences of their designs.