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- Aries, Myriam, et al.
(author)
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Assessment protocol and effects of two dynamic light patterns on human well-being and performance in a simulated and operational office environment
- 2020
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In: Journal of Environmental Psychology. - : Elsevier. - 0272-4944 .- 1522-9610. ; 69
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Journal article (peer-reviewed)abstract
- Sophisticated electric lighting solutions like tuneable white-light LED-systems, varying in light amount and/or colour temperature, can help to supplement or mimic daylight. Today's office environments are increasingly being equipped with dynamic lighting solutions even though it is yet unknown what a dynamic pattern looks like to optimally support human performance and well-being. In a pilot study, a dual-experimental methodology was employed to examine the effects of a dynamic lighting pattern. Two opposite dynamic electric light patterns were applied both in a controlled laboratory study as well as in a quasi-controlled field study. A momentary questionnaire concerning different aspects of well-being was repeated multiple times during the duration of the experiment, complemented by two performance tasks. The current results were inconclusive and inconsistent between the two study types, carefully pointing at the need to test dynamic light patterns in the field before implementing it in a real office environment.
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- Aries, Myriam, et al.
(author)
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Field study challenges : Customisation and personalisation during lighting control research in residences
- 2023
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In: Journal of Physics: Conference Series, Volume 2600, Daylighting & electric lighting. - : Institute of Physics (IOP).
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Conference paper (peer-reviewed)abstract
- Residential lighting control can assist in creating a comfortable atmosphere, providing information, and supporting well-being. Field studies are used to investigate lighting control, but study protocol customisation or personalisation may be required due to actual life events and situations. An 8-week field study tested three protocols for effects on behaviour, well-being, and sleep patterns and was executed in 14 apartments during the winter. Light amount and timing were controlled: residents woke up with a dawn simulation, experienced lights turn-off as an indication to leave for work, and were prepared for bed during a dusk simulation scenario. Sleep trackers results showed later and more wide-ranged wake-up and bedtimes than assumed. As expected, the apartments’ different floorplans challenged comparable light exposure. Unexpectedly, several participants requested a reduced wake-up frequency and reported sleeping elsewhere on Fridays and Saturdays. Everybody experienced a full dawn simulation, but some people left home soon after wake-up, calling for lighting control customisation. Real-time field applications may demand a certain level of customisation or personalisation, affecting intentions and results. Discussing and documenting (un)intentional adjustments during final interviews and in scientific publications can benefit in explaining findings and further research.
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| 5. |
- Aries, Myriam, et al.
(author)
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The relationship of light exposure to sleep outcomes among office workers. Part 1 : Working in the office versus at home before and during the COVID-pandemic
- 2024
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In: Lighting Research and Technology. - : Sage Publications. - 1477-1535 .- 1477-0938. ; 56:2, s. 113-125
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Journal article (peer-reviewed)abstract
- The relationship between everyday light exposure and sleep was studied for office workers. The study was conducted during the upswing of the COVID-19 pandemic, enabling a comparison between Office and Home Workdays. Fifteen full-time office employees were monitored for a period of 4–6 weeks. They wore a light-tracking device on their clothes and had a sleep tracker at home. Compared to an Office Workday, light exposure was lower in the afternoon and total sleep time was almost 5 minutes longer on a Home Workday. Sleep efficiency was the same on both workday types. A higher median illuminance level in the afternoon was significantly related to later sleep onset on an Office Workday. Higher median illuminance levels in the morning were related to earlier awakening. Counter to expectations, higher light levels in the evening were also related to earlier awakening. Everyday light exposure matters for sleep quality but may affect circadian functioning differently than the often more extreme light interventions employed in laboratory experiments. Moreover, differences in outcomes between Office and Home Workdays signal the need for further investigation to provide supportive light levels during workhours.
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- Fischl, Géza, et al.
(author)
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Change for group design exercises in a lighting design program
- 2020
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In: Proceedings of the 16th International CDIO Conference, Chalmers University of Technology, Gothenburg, Sweden, 9-11 June 2020.
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Conference paper (peer-reviewed)abstract
- The lighting design education was recently converted to a three-year bachelor program, from a two-year non-engineering track, in which students' group design exercises resembled a design studio process characterized by high uncertainty, self-anchored problem solving and creativity. Consequently, students who attends to this program is less disciplined in engineering which predominates other educational programs at the School of Engineering. The aim of this study was to map the Lighting design students' ability for a problem-solving approach and their ability of control in group design exercises to create a strategy for sustainable change, if necessary. The study employed a mix-method approach. In the quantitative data gathering, an online survey collected 18 students' responses using convenience sampling on locus of control. Additionally, this survey registered the student's perception on the experienced group design exercise in terms of how concrete (assignment-based) or open (problem-based) the design exercise was. The visualization of this data together with the locus of control measurement revealed that students in the first year (N=4) tend to be located centrally with no preference for problem solving approach. In the meantime, the second-year students (N=6) developed an open (problem-based) approach to problem solving, while their overall control in life is still more external. Finally, the trend for the students on the third year (N=8) move to a more assignment-based approach and more to an internal locus of control. The qualitative investigation involved three focus group interviews (N=13) emphasizing on the following themes: open/closed projects, control, the teacher's role, instructions, demands, realism in the projects, project size, project budget, project time, group dynamics, group size, group roles, leadership, personality, and conflicts. Results reflect a shift in confidence in the ability to exert control over one's own motivation and behavior in the group design exercise. The themes were also reflected in the content of the focus group interviews. Based on these findings and according to the adaptation and implementation of a CDIO's design-implemented experiences, the preparation for introducing small gains for students and staff members were proposed.
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| 7. |
- Fischl, Géza, et al.
(author)
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Design Exercise Strategy for Locus of Control and Self-Efficacy
- 2021
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In: The 17th International CDIO Conference. ; , s. 712-721
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Conference paper (peer-reviewed)abstract
- In the past years, there has been an interest to map and characterize the architectural engineering and the lighting design programs at the School of Engineering, Jönköping, Sweden. The investigations revealed issues related to student's self-efficacy and locus of control. This study aimed to create a routine for solving design problems by planning a small individual design exercise as a mental reward mechanism for students to boost their self-efficacy and internal locus of control. It was hypothesized that internal locus of control correlates to an increased self-efficacy level. The study objectives were (1) to propose an interior design exercise on problem-oriented learning that fits in the overall curriculum of Architectural engineering and Lighting design programs at the undergraduate level. Also, (2) to assess students' locus of control and status of individual preference for problem-solving approaches and self-efficacy. The interior design exercise lasted for a month in February 2020. With the outbreak of the COVID-19, the interior design exercise was the only design exercise held. Altogether, sixteen students completed the workshop. The pre- and post-evaluations show that a single design exercise had slightly shifted the students' locus of control to more internal, which indicates a more self-controlling behaviour. Also, an increase in the enjoyment of a design exercise was recorded, and students demonstrated a slight preference shift towards a less defined and more open design exercise. Students' internal locus of control correlated to self-efficacy measures in the pre-intervention phase but only showed a tendency in post-intervention. The design workshop teacher's reflection on the participants' design process revealed that many worked in groups, which might decrease the self-oriented decision-making rating for self-efficacy. The future investigation would extend these design workshops' complexity by involving a set of lighting design, architectural and urban space design exercises for a more comprehensive review of the effects.
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- Fischl, Géza, et al.
(author)
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Design process reporting tool for mapping and performance optimization
- 2022
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In: Proceedings of the 18th International CDIO Conference, hosted by Reykjavik University, Reykjavik Iceland, June13-15, 2022. - Reykjavík : Reykjavík University. - 9789935965561 ; , s. 848-858
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Conference paper (peer-reviewed)abstract
- The integrative design process is becoming a fundamental part of courses offered at the Construction engineering and Lighting Sciences at Jönköping University, especially in the Architecture-engineering program. Various design processes are known, but the employed concept-test model is a good fit for the integrative design process. This study aimed to investigate how design learners' integrative design process works, and it was hypothesized that this approach fosters students' creativity. The integrative design process was separated into five tasks: Conceptualization with a mood board, Volume study, Floor-plans, Work in progress, and Poster. The quality of the design process was assessed in a Building renovation course using an online assessment platform called Design Process Reporting Tool (DIEGO). This tool measured hours spent on tasks, level of enjoyment, appraisal of the task's difficulty, perceived openness, control over the task performance, and perceived helpfulness of the peer. The results show that students suffer from performative tunnel vision and focus on the quantitative aspects rather than quality. Shortcomings in conceptual preparation and volume studies create frustration and place themselves in an uncomfortable zone. Two-thirds of the students could reach the creative zone with their peer in the process, and in the meantime control, opennes and enjoyment were experienced positively. The need to refine the conceptualization and volume study was made to unlock the full potential of the integrative design approach. Additionally, higher course grades were attainable for those individuals whose ratings on task enjoyment, effort, openness, control, and groupmate evaluation were less exaggerated.
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| 9. |
- Fischl, Géza, et al.
(author)
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Digital occupancy assessment for lighting evaluation : a pilot study to prepare for real-time research results
- 2024
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In: Architectural Science Review. - : Taylor & Francis. - 0003-8628 .- 1758-9622.
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Journal article (peer-reviewed)abstract
- The relationship between lighting and human well-being is pivotal in architecture and environmental design. Adequate lighting enhances visual appeal and significantly influences occupant comfort, productivity, and satisfaction. This pilot study aimed to integrate digital occupancy assessment methods to understand indoor lighting conditions' impact on occupant well-being. Hypotheses explored the potential link between lighting conditions and occupant well-being, as assessed through physiological indicators and the influence of interior attributes on occupants' perceptions and physiological responses. The identified main components were satisfaction with artificial and daylighting, ambiance, and stimulation. The study explored the relationship between lighting conditions, physiological responses, and subjective assessments, revealing potential influences on occupant perceptions. A real-time data visualization could be valuable for data-intensive projects, enhancing comprehension and decision-making for facility management. While limited by the small sample size, trends, and moderate correlations were observed, indicating the need for larger, more diverse samples in future research.
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| 10. |
- Fischl, Géza, et al.
(author)
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Transforming Building Criteria to Evidence Index
- 2021
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In: Applied Sciences. - : MDPI. - 2076-3417. ; 11:13
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Journal article (peer-reviewed)abstract
- There is increasing pressure from developers toward architects and engineers to deliver scientifically sound proposals for often complex and cost-intensive construction products. An increase in digitalization within the construction industry and the availability of intelligently built assets and overall sustainability make it possible to customize a construction product. This servitization of construction products is assumed to perform much preferably in satisfying stakeholders’ physical, psychological, and social needs. The degree to which these products are performing can be evaluated through an evidence index. This article aims to introduce a conceptual model of an evidence index and test it in the programming stage of a case study. The investigation follows the evidence-based design approach and renders evidence through key performance indicators in the programming stage of the building process. For testing the concept, a case study investigation was performed by simulating a novice research assistant, and the amount of evidence was collected and appraised for evidence index. The case study showed that key performance indicators of a servitized project could be evaluated on a four-point scale. The quality of the evidence index generation depended on the level of expertise the evaluator has in research and the skilful use of scientific databases.
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