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Traditional turn-by-turn navigation approaches often do not provide sufficiently detailed information to help people with a visual impairment (PVI) to successfully navigate through an urban environment. To provide PVI with clear and supportive navigation information we created Sidewalk, a new wayfinding message syntax for mobile applications. Sidewalk proposes a consistent structure for detailed wayfinding instructions, short instructions and alerts. We tested Sidewalk with six PVI in the urban center of Amsterdam, the Netherlands. Results show that our approach to wayfinding was positively valued by the participants.
In this paper we present an analysis of WhatsApp interactions in youth care. In family-style group care young people temporarily live in the family of professional foster parents (PFP), while they regularly visit their birth parents (BPs). Our data consist of instant messaging conversations between 11 pairs of PFPs and BPs during two months. Using Conversation Analysis (CA), we focused on the social interaction between BPs and PFPs, achieved in and through multi-modally constructed sequences of updates - responses. Updates are used by BPs in the context of the transfer from the child from/to the PFP to display responsibility towards the PFP and for the child. Also, PFPs use updates to provide BPs quasi primary access to the experiences of the child, centrally by sending images. Across these functions, we observe specific social actions of BPs and PFPs; while BPs work to display responsibility, PFPs subtly empower BPs as parents.
Objectives: Aiming to reduce distributed denial-of-service (DDoS) attacks by alerting the consciences of Internet users, this paper evaluates the effectiveness of four warning banners displayed as online ads (deterrent—control, social, informative, and reorienting) and the contents of their two linked landing pages. Methods: We implement a 4 x 2 quasi-experimental design on a self-selected sample of Internet users to measure the engagement generated by the ads and the pages. Engagement is measured on the ads as the ratio of clicks to impressions, and on the pages as percentage of page scrolled, average session duration, video interaction rate, and URLs click rate. Results: Social ads generate significantly more engagement than the rest with low to medium effect sizes. Data reveal no differences in engagement between both landing page designs. Conclusions: Social messages may be a better alternative for engaging with potential cyber offenders than the traditional deterrent messages. Correspondence: Netherlands Institute for the Study of Crime and Law Enforcement (NSCR), De Boelelaan 1077, 1081 HV, Amsterdam, The Netherlands. Email: AMoneva@nscr.n This is a post-peer-review, pre-copyedit version of an article published in Journal of Experimental Criminology. The final authenticated version is available online at: https://link.springer.com/article/10.1007/s11292-022-09504-2
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