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Publications (10 of 16) Show all publications
Aries, M., Tabbah, A. & Fischl, G. (2023). Field study challenges: Customisation and personalisation during lighting control research in residences. In: Journal of Physics: Conference Series, Volume 2600, Daylighting & electric lighting: . Paper presented at CISBAT International Conference, 13-15 September, 2023, Lausanne, Switzerland. Institute of Physics (IOP), 2600(11), Article ID 112009.
Open this publication in new window or tab >>Field study challenges: Customisation and personalisation during lighting control research in residences
2023 (English)In: Journal of Physics: Conference Series, Volume 2600, Daylighting & electric lighting, Institute of Physics (IOP), 2023, Vol. 2600, no 11, article id 112009Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2023
Series
Journal of Physics: Conference Series, ISSN 1742-6588, E-ISSN 1742-6596 ; 2600
National Category
Architectural Engineering
Identifiers
urn:nbn:se:hj:diva-63001 (URN)10.1088/1742-6596/2600/11/112009 (DOI)2-s2.0-85180151913 (Scopus ID)
Conference
CISBAT International Conference, 13-15 September, 2023, Lausanne, Switzerland
Funder
Swedish Energy Agency, P45185
Available from: 2023-12-06 Created: 2023-12-06 Last updated: 2024-01-12Bibliographically approved
Johansson, P., Fischl, G. & Hammar, K. (2023). Occupancy assessment for lighting evaluation using Digital Twin technology. In: E. Hjelseth, S. F. Sujan & R. J. Scherer (Ed.), ECPPM 2022 - eWork and eBusiness in Architecture, Engineering and Construction 2022: Proceedings of the 14th European Conference on Product and Process Modelling (ECPPM 2022), September 14-16, 2022, Trondheim, Norway. Paper presented at ECPPM 2022, The 14th European Conference on Product and Process Modelling 2022, 14-16 September 2022, Trondheim, Norway (pp. 535-542). Abingdon: CRC Press
Open this publication in new window or tab >>Occupancy assessment for lighting evaluation using Digital Twin technology
2023 (English)In: ECPPM 2022 - eWork and eBusiness in Architecture, Engineering and Construction 2022: Proceedings of the 14th European Conference on Product and Process Modelling (ECPPM 2022), September 14-16, 2022, Trondheim, Norway / [ed] E. Hjelseth, S. F. Sujan & R. J. Scherer, Abingdon: CRC Press, 2023, p. 535-542Conference paper, Published paper (Refereed)
Abstract [en]

The amount of information on evidence-based design in lighting is mounting, however the facility managers, lighting designers, and researchers are struggling with an implementation of an efficient post-occupancy evaluation system. This research aims to establish a method for Digital Occupancy Assessment for Lighting Evaluation (DOALE) to strengthen evidence-based lighting research supporting value generation for stakeholders. A prototype has been implemented using Azure Digital Twin and the RealEstateCore ontology to investigate how an ontology and a commercial platform, developed to facilitate data integration for smart buildings, can be used for occupancy assessment. The prototype was evaluated using a post occupancy evaluation session where data concerning environmental factors (temperature, illuminance) and data concerning occupants (motion, galvanic skin response, and heart rate) were gathered. Questionnaires concerning occupancy perception were also carried out using mobile technology. Several interviews/discussions were also conducted with the lighting researchers using the prototype to perform the POE. The result indicates that it is possible to use current commercial digital twin technology to implement a post-occupancy evaluation system, but the technology is at present so complex that it is hard for a lighting researcher to adopt the system.

Place, publisher, year, edition, pages
Abingdon: CRC Press, 2023
National Category
Building Technologies Computer Sciences
Identifiers
urn:nbn:se:hj:diva-59432 (URN)2-s2.0-85160434372 (Scopus ID)978-1-032-40673-2 (ISBN)978-1-032-40674-9 (ISBN)978-1-003-35422-2 (ISBN)
Conference
ECPPM 2022, The 14th European Conference on Product and Process Modelling 2022, 14-16 September 2022, Trondheim, Norway
Available from: 2023-01-23 Created: 2023-01-23 Last updated: 2023-06-07Bibliographically approved
Fischl, G. & Erlandsson, B. (2022). Design process reporting tool for mapping and performance optimization. In: Proceedings of the 18th International CDIO Conference, hosted by Reykjavik University, Reykjavik Iceland, June13-15, 2022: . Paper presented at 18th International CDIO Conference, Reykjavik University, Reykjavik Iceland, June 13-15, 2022 (pp. 848-858). Reykjavík: Reykjavík University, 18
Open this publication in new window or tab >>Design process reporting tool for mapping and performance optimization
2022 (English)In: Proceedings of the 18th International CDIO Conference, hosted by Reykjavik University, Reykjavik Iceland, June13-15, 2022, Reykjavík: Reykjavík University , 2022, Vol. 18, p. 848-858Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
Reykjavík: Reykjavík University, 2022
Series
CDIO Initiative: Proceedings of the International CDIO Conference, E-ISSN 2002-1593 ; 18
Keywords
Design process, Openness, Control, Creativity, Standards: 3, 5, 7, 8, 9, 11
National Category
Building Technologies Didactics
Identifiers
urn:nbn:se:hj:diva-58301 (URN)2-s2.0-85145911047 (Scopus ID)978-9935-9655-6-1 (ISBN)
Conference
18th International CDIO Conference, Reykjavik University, Reykjavik Iceland, June 13-15, 2022
Available from: 2022-08-23 Created: 2022-08-23 Last updated: 2023-01-17Bibliographically approved
Tabbah, A., Fischl, G. & Aries, M. (2022). Evaluating Digital Twin light quantity data exchange between a virtual and physical environment. In: : . Paper presented at BUILDSIM NORDIC 2022, 22nd-23rd August, Copenhagen, Denmark.
Open this publication in new window or tab >>Evaluating Digital Twin light quantity data exchange between a virtual and physical environment
2022 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In the built environment, both daylight performance and human behaviour are highly dynamic aspects. Therefore, they require a dynamic optimization approach to provide humans with the right amount of lighting at the right time of day. Building Information Management (BIM) and Digital Twin (DT) technology can optimize - with the help of Smart lighting systems - lighting used to support human health and well-being as well as the building’s energy performance. Where lighting simulation aims to represent a (static) reality DT technology can provide a dynamic two-way feedback between the physical and virtual environment to optimize the lighting environment using real-time and virtual sensor data. A fully detailed BIM model has the advantage of realism and as-built information but the disadvantage of heaviness and complexity that can slow down the data exchange. On the other hand, a simplified BIM model will be easier to manage and serve the simulation purpose but may oversimplify reality. However, light simulation validations have been done multiple times, but not many studies are performed using DT-driven light evaluation in which not only the realistic representation but also the exchange of information plays a crucial role. Therefore, this study investigated data exchange between a physical and real environment and focused on a scenario in which optimal interaction between daylight and electric light derives an optimized realization of a given light demand curve. Investigation and validation of a DT model was done using a virtual room simulated in the light simulation tool DIALux evo and its physical twin: an existing room equipped with light sensors. Data exchange was optimized for three levels of geometrical complexity (fine, medium, and coarse). The paper will present and discuss results regarding the influence of model complexity and consequences for the speed of information exchange as well as a first strategy for optimized daylight/electric light performance due to interaction between the DT components.

Series
E3S Web of Conferences, E-ISSN 2267-1242 ; 362
National Category
Building Technologies
Identifiers
urn:nbn:se:hj:diva-58603 (URN)2-s2.0-85146838645 (Scopus ID)
Conference
BUILDSIM NORDIC 2022, 22nd-23rd August, Copenhagen, Denmark
Funder
Swedish Energy Agency, P45185-1
Available from: 2022-10-10 Created: 2022-10-10 Last updated: 2023-02-08Bibliographically approved
Annear, M., Fristedt, S., Fischl, C., Fischl, G., Laddawong, T. & Chiba, M. (2022). Healthy and active ageing in place in urban Japan and Sweden – A MIRAI seed funding project. In: : . Paper presented at Mirai 2.0 Research and Innovation Week 2022, November 15-18, 2022, Kyushu University, Fukuoka, Japan.
Open this publication in new window or tab >>Healthy and active ageing in place in urban Japan and Sweden – A MIRAI seed funding project
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2022 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Civil Engineering Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
urn:nbn:se:hj:diva-62631 (URN)
Conference
Mirai 2.0 Research and Innovation Week 2022, November 15-18, 2022, Kyushu University, Fukuoka, Japan
Available from: 2023-10-10 Created: 2023-10-10 Last updated: 2023-10-10Bibliographically approved
Aries, M., Fischl, G., Lowden, A. & Beute, F. (2022). 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. Lighting Research and Technology
Open this publication in new window or tab >>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
2022 (English)In: Lighting Research and Technology, ISSN 1477-1535, E-ISSN 1477-0938Article in journal (Refereed) Epub ahead of print
Abstract [en]

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.

Place, publisher, year, edition, pages
Sage Publications, 2022
National Category
Architectural Engineering
Identifiers
urn:nbn:se:hj:diva-59145 (URN)10.1177/14771535221136096 (DOI)000897626500001 ()2-s2.0-85144187595 (Scopus ID)HOA;intsam;848418 (Local ID)HOA;intsam;848418 (Archive number)HOA;intsam;848418 (OAI)
Available from: 2022-12-15 Created: 2022-12-15 Last updated: 2022-12-30
Annear, M., Laddawong, T., Chiba, M., Fristedt, S., Fischl, C. & Fischl, G. (2022). Urban walkability in Tokyo’s aging neighborhoods: Barriers and insights for age-friendly planning. In: : . Paper presented at Mirai 2.0 Research and Innovation Week 2022, November 15-18, 2022, Kyushu University, Fukuoka, Japan.
Open this publication in new window or tab >>Urban walkability in Tokyo’s aging neighborhoods: Barriers and insights for age-friendly planning
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2022 (English)Conference paper, Oral presentation only (Refereed)
National Category
Civil Engineering
Identifiers
urn:nbn:se:hj:diva-62630 (URN)
Conference
Mirai 2.0 Research and Innovation Week 2022, November 15-18, 2022, Kyushu University, Fukuoka, Japan
Available from: 2023-10-10 Created: 2023-10-10 Last updated: 2023-10-10Bibliographically approved
Fischl, G. & Erlandsson, B. (2021). Design Exercise Strategy for Locus of Control and Self-Efficacy. In: J. Bennedsen, K. Edström, M. S. Guðjónsdóttir, I. Sæmundsdóttir, N. Kuptasthien, J. Roslöf & A. Sripakagorn (Ed.), The 17th International CDIO Conference: Proceedings - Full papers. Paper presented at 17th International CDIO Conference, Chulalongkorn University & Rajamangala University of Technology Thanyaburi, Bangkok, Thailand, June 21-23, 2021 (pp. 712-721).
Open this publication in new window or tab >>Design Exercise Strategy for Locus of Control and Self-Efficacy
2021 (English)In: The 17th International CDIO Conference: Proceedings - Full papers / [ed] J. Bennedsen, K. Edström, M. S. Guðjónsdóttir, I. Sæmundsdóttir, N. Kuptasthien, J. Roslöf & A. Sripakagorn, 2021, p. 712-721Conference paper, Published paper (Refereed)
Abstract [en]

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.

Series
Proceedings of the International CDIO Conference, ISSN 2002-1593
Keywords
locus of control, self-efficacy, design workshop, active learning, engineering education research, Standards: 5
National Category
Architectural Engineering Didactics
Identifiers
urn:nbn:se:hj:diva-54066 (URN)
Conference
17th International CDIO Conference, Chulalongkorn University & Rajamangala University of Technology Thanyaburi, Bangkok, Thailand, June 21-23, 2021
Note

Conference hosted on-line by Chulalongkorn University (CU) and Rajamangala University of Technology Thanyaburi (RMUTT).

Available from: 2021-07-12 Created: 2021-07-12 Last updated: 2021-07-12Bibliographically approved
Soheilian, M., Fischl, G. & Aries, M. (2021). Smart Lighting Application for Energy Saving and User Well-Being in the Residential Environment. Sustainability, 13(11), Article ID 6198.
Open this publication in new window or tab >>Smart Lighting Application for Energy Saving and User Well-Being in the Residential Environment
2021 (English)In: Sustainability, E-ISSN 2071-1050, Vol. 13, no 11, article id 6198Article, review/survey (Refereed) Published
Abstract [en]

The idea of smart lighting has emerged over the years in commercial and industrial environments, with a focus on energy saving. With the advancement in technology, smart lighting can now offer opportunities in addition to energy saving to users in home environments for the provision of a comfortable atmosphere and the maintenance of user well-being. Currently, research in the smart lighting field is predominantly dedicated to energy saving in non-residential environments; meanwhile, the residential environments have not been explored. Therefore, a literature review was conducted to provide an overview of smart lighting systems’ effect on energy and well-being in the residential environment. Current research is mostly limited to designing and developing a smart lighting system in a controlled environment, with a limited evaluation of well-being and comfort. The review shows that residential smart lighting application possibilities and opportunities are not widely and thoroughly explored. 

Place, publisher, year, edition, pages
MDPI, 2021
Keywords
home environment; intelligent lighting; lighting control; energy saving; user comfort; user well-being; lighting protocol
National Category
Architectural Engineering
Identifiers
urn:nbn:se:hj:diva-52589 (URN)10.3390/su13116198 (DOI)000660722700001 ()2-s2.0-85107834942 (Scopus ID)GOA;;52589 (Local ID)GOA;;52589 (Archive number)GOA;;52589 (OAI)
Funder
Swedish Energy Agency, P45185
Note

This research was funded by the Swedish Energy Agency (project P45185) and Smart Housing Småland.

Available from: 2021-05-31 Created: 2021-05-31 Last updated: 2022-02-10Bibliographically approved
Moadab, N. H., Olsson, T., Fischl, G. & Aries, M. (2021). Smart versus conventional lighting in apartments - Electric lighting energy consumption simulation for three different households. Energy and Buildings, 244, Article ID 111009.
Open this publication in new window or tab >>Smart versus conventional lighting in apartments - Electric lighting energy consumption simulation for three different households
2021 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 244, article id 111009Article in journal (Refereed) Published
Abstract [en]

For residential environments, energy-reducing strategies to cope with user activities and behaviour are currently limited mainly to the implementation of improved lighting technology. Non-residential environments have already been operating smart lighting systems for many years. These systems use advanced and integrated lighting technology, including an internet-based network for data communication. As user activities and behaviour in the residential sector significantly differ from the non-residential one; thus, a non-residential energy optimisation potential may not necessarily be achievable and directly translatable to the residential sector. Also, the architectural typological variety amongst residences may be larger than non-residences. In residential buildings, the effect of the composition of a household (domestic establishment) and user activities on smart lighting systems’ consumption and efficiency are not explicitly investigated before. In this light simulation study in Sweden, the electric lighting energy consumption for a two-room apartment was modelled for three different household scenarios using DIALux Evo and DIVA-for Rhino. The household scenarios were composed based on input by 12 existing Swedish households and incorporate residential occupancy variety. The study’s findings suggested that the appropriate use of smart lighting solutions, including optimised sensor applications, has the potential to save more than 50% of electric lighting energy consumption compared to non-smart systems. The study demonstrated promising simulation results specifically focussing on (smart) lighting application alternatives in the residential sector.

Place, publisher, year, edition, pages
Elsevier, 2021
Keywords
Indoor lighting, Energy efficiency, Intelligent systems, Living environment, Residential
National Category
Energy Systems
Identifiers
urn:nbn:se:hj:diva-52199 (URN)10.1016/j.enbuild.2021.111009 (DOI)000663712800006 ()2-s2.0-85105694995 (Scopus ID)HOA;;52199 (Local ID)HOA;;52199 (Archive number)HOA;;52199 (OAI)
Funder
Swedish Energy Agency, P451851
Available from: 2021-04-15 Created: 2021-04-15 Last updated: 2021-07-15Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-6867-4712

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