The enhancement of GPS technology enables the use of GPS devices not only as navigation and orientation tools, but also as instruments used to capture travelled routes: as sensors that measure activity on a city scale or the regional scale. TU Delft developed a process and database architecture for collecting data on pedestrian movement in three European city centres, Norwich, Rouen and Koblenz, and in another experiment for collecting activity data of 13 families in Almere (The Netherlands) for one week. The question posed in this paper is: what is the value of GPS as ‘sensor technology’ measuring activities of people? The conclusion is that GPS offers a widely useable instrument to collect invaluable spatial-temporal data on different scales and in different settings adding new layers of knowledge to urban studies, but the use of GPS-technology and deployment of GPS-devices still offers significant challenges for future research.
DOCUMENT
Active transport to school is associated with higher levels of physical activity in children. Promotion of active transport has therefore gained attention as a potential target to increase children’s physical activity levels. Recent studies have recognized that the distance between home and school is an important predictor for active travel among children. These studies did not yet use the promising global positioning system (GPS) methods to objectively assess active transport. This study aims to explore active transport to school in relation to the distance between home and school among a sample of Dutch elementary school children, using GPS. Seventy-nine children, aged 6-11 years, were recruited in six schools that were located in five cities in the Netherlands. All children were asked to wear a GPS receiver for one week. All measurements were conducted between December 2008 and April 2009. Based on GPS recordings, the distance of the trips between home and school were calculated. In addition, the mode of transport (i.e., walking, cycling, motorized transport) was determined using the average and maximum speed of the GPS tracks. Then, proportion of walking and cycling trips to school was determined in relation to the distance between home and school. Out of all school trips that were recorded (n = 812), 79.2% were classified as active transport. On average, active commuting trips were of a distance of 422 meters with an average speed of 5.2 km/hour. The proportion of walking trips declined significantly at increased school trip distance, whereas the proportion of cycling trips (β = 1.23, p < 0.01) and motorized transport (β = 3.61, p < 0.01) increased. Almost all GPS tracks less than 300 meters were actively commuted, while of the tracks above 900 meters, more than half was passively commuted. In the current research setting, active transport between home and school was the most frequently used mode of travel. Increasing distance seems to be associated with higher levels of passive transport. These results are relevant for those involved in decisions on where to site schools and residences, as it may affect healthy behavior among children. https://doi.org/10.1186/1471-2458-14-227 LinkedIn: https://www.linkedin.com/in/sanned/
MULTIFILE
Introduction: Previous longitudinal studies indicate that physical activity (PA) significantly declines from primary-to secondary school, and report both changes in individual and environmental determinants of PA. In order to understand this transition and to prevent this negative trend, it is important to gather contextually rich data on possible mechanisms that drive this decline. Therefore, the aim of this study was to investigate changes of PA patterns in transition between primary and secondary school, and to add domain-specific insights of how, where, and when these changes occur. Methods: In total, 175 children participated in a 7-day accelerometer- and Global Positioning System (GPS) protocol at their last year of primary and their first year of secondary school. GPS data-points were overlaid with Geographical Information Systems (GIS) data using ArcGIS 10.1 software. Based on the GPS locations of individual data-points, we identified child’s PA at home, school, local sports grounds, shopping centers, and other locations. Also, trips in active and passive transport were identified according to previously validated GPS speed-algorithms. Longitudinal multi-level linear mixed models were fitted adjusting for age, gender, meteorological circumstances, and the nested structure of days within children and children within schools. Outcome measures were minutes spent in light PA and moderate-to-vigorous PA, specified for the time-segments before school, during school, after school and weekend days. Results: Total PA significantly declined from primary to secondary school. Although transport-related PA increased before- and during school, decreases were found for especially afterschool time spent at sports grounds and transport-related PA during weekends.
MULTIFILE
Twirre is a new architecture for mini-UAV platforms designed for autonomous flight in both GPS-enabled and GPS-deprived applications. The architecture consists of low-cost hardware and software components. High-level control software enables autonomous operation. Exchanging or upgrading hardware components is straightforward and the architecture is an excellent starting point for building low-cost autonomous mini-UAVs for a variety of applications. Experiments with an implementation of the architecture are in development, and preliminary results demonstrate accurate indoor navigation
MULTIFILE
Deze video licht onderzoek uit met als doel om een methode te ontwikkelen en in kaart te brengen waar bezoekers van de Floriade meer of minder zijn geweest. De onderzoekers willen meer weten hoe de inrichting van groene omgeving uitnodigt tot bewegen.
LINK
Werkgevers in de Europese Unie gebruiken draagbare technologie, zoals smartphones, om er preventief voor te zorgen dat hun bedrijf geen besmettingshaard wordt. Door bron- en contactonderzoek en tracking van werknemers proberen zij dat te bereiken. Maar hoe zit dit in relatie tot de Europese AVG-regels? Stefania Marassi van de Haagse Hogeschool stelt dat er strikte voorwaarden moeten zijn om deze technologie te mogen gebruiken.
MULTIFILE
Een verpleegkundige die evidence-based handelt, maakt gebruik van zowel wetenschappelijk onderzoek als zijn eigen professionele ervaringskennis, gecombineerd met de kennis en voorkeuren van de patiënt. Een gangbare benadering om dit evidence-based handelen in de praktijk te krijgen, is het ontwikkelen van een richtlijn om deze vervolgens in de gezondheidszorg te implementeren. Hoewel deze werkwijze gangbaar is, is ze slechts beperkt succesvol. Inmiddels is er beginnend bewijs dat cultuur en leiderschap sleutelelementen zijn bij het implementeren van richtlijnen, zodat er meer nodig is om professioneel gedrag te veranderen dan de professional ‘bloot stellen’ aan een richtlijn. Een dergelijke gedragsverandering is een complex proces, omdat dit handelen onderhevig is aan zowel intrinsieke (persoonsgebonden) als extrinsieke (contextgebonden) factoren.
LINK
