Browsing by Author "Campos, Pedro F."
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- Applying pen pressure, tilt and touch interactions to data visualizationsPublication . Cabral, Diogo; Ramos, Marcelo; Campos, Pedro F.Bimanual interactions using pen and touch are natural to humans and have proven and explored in previous research. However, most of the previous work has been limited to using cartesian coordinates of fingers and pen tip. In this work, we go further by exploring additional pen data, like pressure and tilt, combined with multi touch inputs. We apply this combination to two data visualizations: Bubble Chart and Linear Regression combined with a Radar. We have performed a preliminary user study comparing Pen and Touch interactions with Mouse input. We have found the Pen and Touch interactions can consume less time while looking for specific values in the Bubble Chart, whereas Mouse can be faster while looking for specific relation in Linear Regression and Radar.
- CHI 2013 human work interaction design (HWID) SIG: past history and future challengesPublication . Clemmensen, Torkil; Campos, Pedro F.; Katre, Dinesh S.; Abdelnour-Nocera, Jose; Lopes, Arminda; Orngreen, Rikke; Minocha, ShaileyIn this SIG we aim to introduce the IFIP 13.6 Human Work Interaction Design (HWID) approach to the CHI audience. The HWID working group aims at establishing relationships between extensive empirical work-domain studies and HCI design. We invite participants from industry and academia with an interest on empirical work analysis, HCI, interaction design and usability and user experience in work situations and in the workplace. This SIG is a vital step towards creating a CHI2014 workshop on this topic.
- Human work interaction design for pervasive and smart workplacesPublication . Campos, Pedro F.; Lopes, Arminda; Clemmensen, Torkil; Abdelnour-Nocera, JosePervasive and smart technologies have pushed work place configuration beyond linear logic and physical boundaries. As a result, workers’ experience of and ac cess to technology is increasingly pervasive, and their agency constantly reconfigured. While this in certain areas of work is not new (e.g., technology mediation and decision support in air traffic control), more recent developments in other domains such as healthcare (e.g., Augmented Reality in Computer Aided Surgery) have raised challenging issues for HCI researchers and practitioners. The question now is: how to improve the quality of workers’ experience and outputs? This workshop focuses on answering this question to support professionals, academia, national labs, and industry engaged in human work analysis and interac tion design for the workplace. Conversely, tools, proce dures, and professional competences for designing hu man-centered technologies for pervasive and smart workplaces will be discussed.
- Raising awareness of smartphone overuse among university students: a persuasive systems approachPublication . Abreu, Carlos; Campos, Pedro F.Smartphone overuse can lead to a series of physical, mental and social disturbances. This problem is more prevalent among young adults as compared to other demographic groups. Additionally, university students are already undergoing high cognitive loads and stress conditions; therefore, they are more susceptible to smartphone addiction and its derived problems. In this paper, we present a novel approach where a conversational mobile agent uses persuasive messages exploring the reflective mind to raise users’ awareness of their usage and consequently induce reduction behaviors. We conducted a four-week study with 16 university students undergoing stressful conditions—a global lockdown during their semester—and evaluated the impact of the agent on smartphone usage reduction and the perceived usefulness of such an approach. Results show the efficacy of self-tracking in the behavior change process: 81% of the users reduced their usage time, and all of them mentioned that having a conversational agent alerting them about their usage was useful. Before this experiment, only 68% of them considered such an approach could be useful. In conclusion, users deemed it essential to have an engaging conversational agent on their smartphones, in terms of helping them become more aware of usage times.
- The Impact of Mobile Phone Reminders on Perceived Self-Care Levels of Informal CaregiversPublication . Peres, Beatriz; Gouveia, Élvio Rúbio; Campos, Pedro F.: Informal caregivers play a fundamental role in caring for people that need assistance and provide an effective service in managing their loved ones’ health. Because of this, they have little time to attend to themselves and perform self-care practices. Some of these practices can improve mental health. By snowball sampling, we recruited 15 informal caregivers, 12 females and three males. Using the Wilcoxon signed-rank test, we analyzed the impact of the reminders on a self-care scale. We used the Mindful Self-Care Scale, comparing the same population without reminders and with reminders. Results indicated that total self-care scores with reminders increased statistically significantly, T = 13, Z = −2.481, p ≤ 0.013, with a large effect size (r = 0.64). This study shows a significant self-care increase in informal caregivers after using reminders. Future development of a reminders-based approach could focus on increasing self-care and the time caregivers take for themselves, empowering them to take a more active role in meeting their own needs.