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Monitoring indoor exposure to combustion-derived particles using plants Hasselt University KU Leuven
Indoor plants can be used to monitor atmospheric particulates. Here, we report the label-free detection of combustion-derived particles (CDPs) on plants as a monitoring tool for indoor pollution. First, we measured the indoor CDP deposition on Atlantic ivy leaves (Hedera hibernica) using two-photon femtosecond microscopy. Subsequently, to prove its effectiveness for using it as a monitoring tool, ivy plants were placed near five different indoor ...
Do ventilation systems accomplish the necessary indoor air quality in low energy houses? Hasselt University
The aim of the EU EPBD is to realize lower energy consumption in buildings, without neglecting the indoor air quality. A suggested measure is to improve the air tightness of the building, combined with a well-designed ventilation system to guarantee a good indoor air quality. The research presented here analyzed the indoor climate of 71 recently built dwellings in Flanders, Belgium, ranging from standard execution over low energy up to even ...
Association of indoor dust microbiota with cognitive function and behavior in preschool-aged children Hasselt University KU Leuven University of Antwerp
Background:Childhood cognitive development depends on neuroimmune interactions. Immunomodulation by early-life microbial exposure may influence neuropsychological function. In this study, we investigate the association between residential indoor microbiota and cognition and behavior among preschoolers. Results:Indoor-settled dust bacterial and fungal characteristics were assessed using 16S and ITS amplicon sequencing (microbial diversity) and ...
HiVG : a hierarchical indoor visibility-based graph for navigation guidance in multi-storey buildings Ghent University
A hierarchical data model is needed in mobile navigation systems to generate route instructions on multiple levels of detail (LODs), thereby adapting to users' various information needs during navigation. In complex multi-storey indoor environments, existing hierarchical data models mainly rely on logical graphs that represent indoor cellular spaces as nodes and adjacency as edges. Due to the lack of precise geometry, however, they have limited ...
Indoor nature integration for stress recovery and healthy eating: A picture experiment with plants versus green color Flanders Marine Institute Ghent University
Aim
Urbanized environments may stimulate unhealthy food choices and stress. Several theories explain that exposure to green nature can counter these stress effects. Since we spend most time indoors, integrating nature in the interior could be a promising health promotion tool. Hence, we tested whether the beneficial effect of nature for stress recovery is also present in indoor settings via the use of plants or green ...
A gamification-based approach on indoor wayfinding research Ghent University
Indoor environments can be very complex. Due to the challenges in these environments in combination with the absence of mobile wayfinding aids, a great need exists for innovative research on indoor wayfinding. In this explorative study, a game was developed in Unity to investigate whether the concept of gamification could be used in studies on indoor wayfinding so as to provide useful information regarding the link between wayfinding ...
On the right track : comfort and confusion in indoor environments Ghent University
Indoor navigation systems are not well adapted to the needs of their users. The route planning algorithms implemented in these systems are usually limited to shortest path calculations or derivatives, minimalizing Euclidian distance. Guiding people along routes that adhere better to their cognitive processes could ease wayfinding in indoor environments. This paper examines comfort and confusion perception during wayfinding by applying a ...
Comparing written and photo-based indoor wayfinding instructions through eye fixation measures and user ratings as mental effort assessments Ghent University
The use of mobile pedestrian wayfinding applications is gaining importance indoors. However, compared to outdoors, much less research has been conducted with respect to the most adequate ways to convey indoor wayfinding information to a user. An explorative study was conducted to compare two pedestrian indoor wayfinding applications, one text-based (Sole-Way) and one image-based (Eyedog), in terms of mental effort. To do this, eye tracking data ...
'Turn left after the WC, and use the lift to go to the 2nd floor' : generation of landmark-based route instructions for indoor navigation Ghent University
People in unfamiliar environments often need navigation guidance to reach a destination. Research has found that compared to outdoors, people tend to lose orientation much more easily within complex buildings, such as university buildings and hospitals. This paper proposes a category-based method to generate landmark-based route instructions to support people's wayfinding activities in unfamiliar indoor environments. Compared to other methods ...