The objective of this study is to investigate the heart rate (HR) accuracy measured at the wrist with the photoplethysmography (PPG) technique with a Fitbit Charge 2 (Fitbit Inc) in wheelchair users with spinal cord injury, how the activity intensity affects the HR accuracy, and whether this HR accuracy is affected by lesion level.
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The main objective of the study is to determine if non-specific physical symptoms (NSPS) in people with self-declared sensitivity to radiofrequency electromagnetic fields (RF EMF) can be explained (across subjects) by exposure to RF EMF. Furthermore, we pioneered whether analysis at the individual level or at the group level may lead to different conclusions. By our knowledge, this is the first longitudinal study exploring the data at the individual level. A group of 57 participants was equipped with a measurement set for five consecutive days. The measurement set consisted of a body worn exposimeter measuring the radiofrequency electromagnetic field in twelve frequency bands used for communication, a GPS logger, and an electronic diary giving cues at random intervals within a two to three hour interval. At every cue, a questionnaire on the most important health complaint and nine NSPS had to be filled out. We analysed the (time-lagged) associations between RF-EMF exposure in the included frequency bands and the total number of NSPS and self-rated severity of the most important health complaint. The manifestation of NSPS was studied during two different time lags - 0–1 h, and 1–4 h - after exposure and for different exposure metrics of RF EMF. The exposure was characterised by exposure metrics describing the central tendency and the intermittency of the signal, i.e. the time-weighted average exposure, the time above an exposure level or the rate of change metric. At group level, there was no statistically significant and relevant (fixed effect) association between the measured personal exposure to RF EMF and NSPS. At individual level, after correction for multiple testing and confounding, we found significant within-person associations between WiFi (the self-declared most important source) exposure metrics and the total NSPS score and severity of the most important complaint in one participant. However, it cannot be ruled out that this association is explained by residual confounding due to imperfect control for location or activities. Therefore, the outcomes have to be regarded very prudently. The significant associations were found for the short and the long time lag, but not always concurrently, so both provide complementary information. We also conclude that analyses at the individual level can lead to different findings when compared to an analysis at group level. https://doi.org/10.1016/j.envint.2019.104948 LinkedIn: https://www.linkedin.com/in/john-bolte-0856134/
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In dit artikel bespreken we de bevindingen van een verkennend onderzoek naar talentscans. Doel van het onderzoek was om meer inzicht te krijgen in het gebruik van talentscans in de praktijk en om een aantal veel gebruikte talentscans te onderzoeken op hun meetpretentie.
The AR in Staged Entertainment project focuses on utilizing immersive technologies to strengthen performances and create resiliency in live events. In this project The Experiencelab at BUas explores this by comparing live as well as pre-recorded events that utilize Augmented Reality technology to provide an added layer to the experience of the user. Experiences will be measured among others through observational measurements using biometrics. This projects runs in the Experience lab of BUas with partners The Effenaar and 4DR Studio and is connected to the networks and goals related to Chronosphere, Digireal and Makerspace. Project is powered by Fieldlab Events (PPS / ClickNL)..
Evaluating player game experiences through biometric measurementsThe BD4CG (Biometric Design for Casual Games project) worked in a highly interdisciplinary context with several international partners. The aim of our project was to popularize the biometric method, which is a neuro-scientific approach to evaluating the player experience. We specifically aimed at the casual games sector, where casual games can be defined as video or web-based games with simple and accessible game mechanics, non threatening themes and generally short play sessions. Popular examples of casual games are Angry Birds and FarmVille. We focussed on this sector because it is growing fast, but its methodologies have not grown with it yet. Especially the biometrics method has so far been almost exclusively used domain by the very large game developers (such as Valve and EA). The insights and scientific output of this project have been enthusiastically embraced by the international academic arena. The aim of the grant was to focus on game producers in the casual sector, and we have done so but we also established further contacts with the game sector in general. Thirty-one outputs were generated, in the form of presentations, workshops, and accepted papers in prominent academic and industry journals in the field of game studies and game user research. Partners: University of Antwerpen, RANJ, Forward Games, Double Jungle, Realgames, Dreams of Danu, Codemasters, Dezzel, Truimph Studios, Golabi Studios
Aanleiding De luchtvaart wordt steeds veiliger. Toch zijn er alleen al in Nederland jaarlijks zo'n 11.000 issues met luchtvaartveiligheid. Wereldwijd vinden er elke dag ongelukken plaats die leiden tot schade aan vliegtuigen. Om de veiligheid verder te verbeteren is er nieuwe internationale regelgeving opgesteld. Onder deze regels moeten de maatschappijen alle incidenten en ongelukken analyseren en zo veiligheidsrisico's identificeren nog voordat deze zich voordoen. Het probleem is dat kleine en middelgrote luchtvaartmaatschappijen onvoldoende vliegbewegingen maken om genoeg goede data hiervoor te hebben. Doelstelling De centrale vraag die de onderzoekers in dit RAAK-project willen beantwoorden: Wat is de relatie tussen veiligheidsmanagement en veiligheidsperformance van luchtvaartmaatschappijen? Het onderzoek wil kleine en middelgrote luchtvaartmaatschappijen helpen bij het meten van de veiligheid van hun bedrijf, zonder dat ze grote hoeveelheden veiligheidsdata tot hun beschikking hebben. Het onderzoek zal geschikte veiligheidsindicatoren identificeren, een longlist ontwikkelen met meetwaarden voor safetymanagement, en een shortlist genereren en valideren van bruikbare meetwaarden. Deze kennis wordt vertaald in een online dashboard voor de industrie, zodat de veiligheid objectiever beoordeeld kan worden. Beoogde resultaten Een concreet resultaat van dit project is een online dashboard waarmee kleine en middelgrote luchtvaartmaatschappijen hun veiligheid kunnen beoordelen, inclusief handleiding. Er zullen masterclasses veiligheid worden georganiseerd voor de luchtvaartindustrie. Het projectteam zal de opgedane kennis verspreiden via wetenschappelijke artikelen in relevante peer-reviewed tijdschriften, een website, presentaties bij bedrijven en tijdens bijeenkomsten, en een afsluitende conferentie.
