Comparing GPS data and activity spaces
Free range kids? Using GPS-derived activity spaces to examine children’s neighborhood activity and mobility
... corridors. GPS tracking confirmed that these children largely confined their pedestrian activ- ities to their residential neighborhood and nearby parks, staying very close to ...
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Generating GPS activity spaces that shed light upon the mobility habits of older adults: a descriptive analysis
... larger activity spaces, potentially indicating greater mobility, yet walkability was associated with smaller spaces, potentially indicating that the local neighborhood environment is sufficient to ...
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A study design for physical activity reference data collection using GPS and accelerometer
... Using GPS particularly in real-life protocols provides greater insight into the nature of activity with both location and activity information ...sensor-based activity monitoring in older ...
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The increase of the ionospheric activity as measured by GPS
... a data set which can serve as reference to identify possible correlations between the ionospheric activ- ity and unidentified problems in GPS time series or GPS data ...solar activity ...
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Multi-level temporal autoregressive modelling of daily activity satisfaction using GPS-integrated activity diary data
... or activity space characteristics, land-use mix and urban function are statistically signi ficantly associated with activity ...lower activity satisfaction, ceteris ...satisfaction comparing to ...
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Network Structure and Activity Spaces
... survey data from two urban areas in Florida (Parthasarathi et ...different data sources and in-depth analyses at different level will help develop network design guidelines that can be used to address ...
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Detecting activity locations from raw GPS data: a novel kernel-based algorithm
... situations, GPS signals can be interrupted, par- ticularly in urban areas where people spend time inside buildings that hinder signal ...filling data gaps using techniques such as inter- ...real-life ...
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Automated time activity classification based on global positioning system (GPS) tracking data
... structures, GPS signals may be reflected by the buildings and result in positional error ...the GPS data did not differ much between indoor and outdoor microen- vironments, which makes it difficult ...
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Extracting Activity-travel Diaries from GPS Data: Towards Integrated Semi-automatic Imputation
... Several data sets were used to evaluate the performance of the integrated ...validated data, which although not necessarily error free, are considered to perfectly describe the true activity-travel ...
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Comparing GPs’ risk attitudes for their own health and for their patients’ : a troubling discrepancy?
... French GPs in four different contexts using the same 11-point scale than ...of activity and the measured risk atti- ...that GPs are sig- nificantly willing to take more risk in situations affecting ...
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Locations of Physical Activity as Assessed by GPS in Young Adolescents
... physical activity locations in youth suggests that nonhome and nonschool physical activity is spread across multiple land use types, including green spaces, streets, retail locations, and other ...
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The Padul normal fault activity constrained by GPS data: Brittle extension orthogonal to folding in the central Betic Cordillera
... 5.2. GPS-derived velocity field Figure 7 shows the velocity field in IGS08 reference frame of the Padul Fault network, using solutions from the five campaigns between 1999 and ...episodic GPS campaigns ...
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A methodology for inexpensive GPS data storage and analysis
... This allowed for reuse of code written for the ESRI GeoProcessor. A simple map matching algorithm was created and used quite successfully for long-haul trucking operations. But this method has its limitation when the ...
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Assimilation of GPS radio occultation data at DWD
... by comparing the gradient of the observational cost function for the contribution of a single ray evaluated in the tangent-linear approximation to finite differencing of the non-linear operator as a function of ...
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Topological path planning in GPS trajectory data
... of spaces, including a street network where the samples are GPS trajectories, the proposed method is demonstrated to accurately compute a set of homotopy inequivalent ...
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Navigation algorithm for INS/GPS Data Fusion
... Figure 5.2: Schematic of my EKF architecture 5.2 Results True values of position, velocity and attitude are described at Figure 5.1 to 5.3. The first step was the creation of inertial navigation system with use of ideal ...
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Comparing self-identified and census-defined neighborhoods among adolescents using GPS and accelerometer
... processing Data merging and processing Each subject’s GPS and accelerometer output files were manually reviewed by study personnel upon return to ensure that both output files contained adequate data ...
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Comparing children’s GPS tracks with non-objective geospatial measures of exposure to junk food
... Error estimation Children’s health a b s t r a c t Various geospatial techniques have been employed to estimate children’s exposure to envi- ronmental cardiometabolic risk factors, including junk food. But many studies ...
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Comparing State Spaces in Automatic Security Protocol Analysis
... Related work: To the best of our knowledge, the difference between state spaces in security protocol analysis has not been investigated before. However, some work exists on comparing the performance of ...
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GPS Data Collection Guidelines
... the GPS receiver. GPS can be used worldwide, 24 hours a day and in all types of ...of GPS receiver, field techniques used, post- processing of data, and error from various ...
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