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Auflistung nach Autor:in "Tsovaltzi, Dimitra"

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  • Workshopbeitrag
    An analysis of the effects of swarm cycling on cyclists’ stress levels
    (Mensch und Computer 2023 - Workshopband, 2023) Schaffer, Stefan; Meng, Linglong; Hemdane, Alaaeddine; Wolf, Katrin; Tsovaltzi, Dimitra; Chehayeb, Lara; Gebhard, Patrick
    Swarm cycling has been proposed in previous researches as a novel concept for urban mobility, by adopting the "safety in number" approach, to enhance the visibility of cyclists in urban traffic and to increase the safety of cyclists. To investigate the effects of swarm cycling on the stress level of bicyclists, we conducted an experiment in an enclosed traffic training field with stressors, such as construction sites, etc. to simulate the stress situations in real traffic. A stress detection system utilizing the Galvanic Skin Response (GSR) sensor and an Android application was developed to monitor participants’ stress responses during cycling. In this research, 21 participants engaged in various cycling scenarios, including cycling alone, cycling within a swarm, and cycling in different positions within the swarm. GSR signal data were collected to quantify the number of stress peaks experienced by each participant during the rides. The data were subjected to statistical analysis to compare stress levels among the different cycling scenarios. The results of the statistical analysis indicate that swarm cycling has a positive impact on individual cyclist stress levels compared to cycling alone. However, there was no statistically significant difference in stress levels observed among different cycling positions within the swarm. This research provides insights into the potential benefits of swarm cycling as an urban mobility solution, emphasizing its positive influence on cyclist stress levels, thus encouraging the adoption of this novel concept to enhance safety and comfort for urban cyclists.
  • Workshopbeitrag
    Piloting vibration induction for synchrony in urban cycling
    (Mensch und Computer 2023 - Workshopband, 2023) Dauer, Louisa; Chehayeb, Lara; Ameli, Mina; Anglet, Manuel; Bhuvaneshwara, Chirag; Schaffer, Stefan; Zahn, Esther; Tsovaltzi, Dimitra
    To reduce stress in traffic situations, we investigate a possible strategy to support bike swarms by inducing interpersonal synchrony, currently a very popular construct. Synchrony may coordinate movements, reduce stress, and increase the feeling of safety during cycling in a group. Synchrony is a promising construct, but its induction in multisensory situations has not been tested. To induce synchrony in multisensory situations like the street traffic, we use tactile feedback in the form of vibrations, the influence of which has not yet been researched. To this end, we simulated a real traffic scenario in the laboratory. We explored to what extent nonintrusive vibrations can be distinctly perceived when competing with audiovisual input from street traffic, without constituting a distractor from street traffic. In the long term we want to explore possibilities of measuring and inducing synchronous leg movements in bike swarms on demand. This involves detecting the need for synchrony, for instance due to stress and lack of synchrony and prompt cyclists to follow vibration rhythms, in order to induce perceived emotional synchrony with the other group members. We present our conceptual work and technological development towards inducing synchrony through social wearables, and results from a first pilot study.