Search results for "TRACK"
showing 10 items of 975 documents
An Indoor and Outdoor Navigation System for Visually Impaired People
2019
In this paper, we present a system that allows visually impaired people to autonomously navigate in an unknown indoor and outdoor environment. The system, explicitly designed for low vision people, can be generalized to other users in an easy way. We assume that special landmarks are posed for helping the users in the localization of pre-defined paths. Our novel approach exploits the use of both the inertial sensors and the camera integrated into the smartphone as sensors. Such a navigation system can also provide direction estimates to the tracking system to the users. The success of out approach is proved both through experimental tests performed in controlled indoor environments and in r…
A general framework for collecting and analysing the tracking data of cruise passengers at the destination
2016
Cruise passengers’ behaviour at the destination is a rather poorly investigated phenomenon. The single exit/entry point and the relatively brief visiting time, which characterize cruise passengers’ experience at their destinations, make the use of GPS technology particularly suitable for the analysis of such a relevant phenomenon. The aim of this research is to propose a general framework for collecting and analysing GPS tracking data relating to cruise passengers’ behaviour at their destination. The main prerequisites and research stages for the implementation of surveys on cruise passengers will be described and a set of tools and measures for the analysis of GPS tracking data will be pro…
Children’s Generalization of Novel Relational Nouns in Comparison Contexts
2021
Comparison settings (i.e. several stimuli introduced simultaneously) favor novel word learning and generalization. This study investigates the temporal dynamics of 6-year-olds solving strategies in a relational noun (e.g. “x is the dax for y”) comparison and generalization task with eye tracking data. We manipulated conceptual distance between the task’s items and recorded children’s performances and eye tracking data. We analyze and interpret solving strategies following the predictions made by two hypotheses, the Projection-First and Alignment-first. Eye tracking data clearly revealed that children, first, extract the relation from comparisons of items within a pair and search for a match…
Schoolyard affordances for physical activity: a pilot study in 6 Nordic–Baltic countries
2021
Environmental settings influence children’s and adolescents’ physical activity (PA) in neighborhoods and schoolyards. This study aimed to explore the main characteristics of schoolyards in six Nordic–Baltic countries, to document how those facilities provide affordances for PA in 7–18 year–old schoolchildren, and how the schoolyard meets children’s preferences. One schoolyard was studied in each included country: Iceland, Norway, Finland, Lithuania, Latvia, and Estonia. The affordances, facilities, and equipment for PA in schoolyards were identified through orthophoto maps and standard registration forms. Children’s preferences were collected through group interviews at each participating s…
Special track on Geometric Constraints and Reasoning
2008
Geometric Computing and Reasoning (GCR) aims at emphasizing recent trends in the domain of geometric constraint solving and automated, or computer aided deduction in geometry. This year sees the third edition of this technical track of SAC.
Ownership and Use of Commercial Physical Activity Trackers Among Finnish Adolescents: Cross-Sectional Study
2017
BackgroundMobile phone apps for monitoring and promoting physical activity (PA) are extremely popular among adults. Devices, such as heart rate monitors or sports watches (HRMs/SWs) that work with these apps are at sufficiently low costs to be available through the commercial markets. Studies have reported an increase in PA levels among adults with devices; however, it is unknown whether the phenomena are similar during early adolescence. At a time when adolescents start to develop their own sense of independence and build friendship, the ease of smartphone availability in developed countries needs to be investigated in important health promoting behaviors such as PA. ObjectiveThe objective…
Tracking of Television Viewing Time during Adulthood: The Young Finns Study.
2016
Purpose: The aim of this study was to investigate the tracking of television viewing (TV) time as an indicator of sedentary behavior among adults for a period of 25 yr. Methods: A random sample of 1601 subjects (740 men) age 18, 21, and 24 yr participated in the Cardiovascular Risk in Young Finns Study in 1986. TV time during leisure time was measured with a single self-report question at baseline and in 2001, 2007, and 2011. Tracking of TV time was analyzed using Spearman rank correlations and simplex models. Level and change of TV time were examined using linear growth modeling. Results: The 4- and 6-yr integrated TV time stability coefficients, adjusted for measurement errors, were Q0.60…
School Tracking and Mental Health
2019
To understand how the type of education affects long-term mental health, we examine the effects of a comprehensive school reform on mental health–related hospitalizations and deaths. The reform postponed the tracking of students into vocational and academic schools from age 11 to age 16, thus affecting the set of peers and the curriculum to which these students were exposed. The reform was implemented gradually across Finnish municipalities between 1972 and 1977. We use difference-in-differences variation and administrative data. Our overall results show no discernible effects on mental health–related hospitalizations or deaths, but heterogeneity analysis shows an adverse effect on hospital…
Tracking of physical activity from early childhood through youth into adulthood.
2014
The aim of the study was to investigate the tracking of physical activity (PA) from preschool age to adulthood in six age cohorts of males and females.A random sample of 3596 boys and girls age 3-18 yr participated in the Cardiovascular Risks in Young Finns Study in 1980. The follow-up measurements were repeated in 1986, 1992, 2001, and 2007. The PA was measured by mother's report in 3- and 6-yr-olds and self-report in 9-yr-olds and older. Tracking of PA was analyzed using the Spearman rank-order correlation and a simplex model.Mother-reported PA at age 3 and 6 yr significantly predicted self-reported PA in youth and in young adulthood, and there was a significant indirect effect of mother …