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Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...
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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
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An Application for Pairing with Wearable Devices to Monitor Personal Health Status
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Mapping the walk to school using accelerometry combined with a global positioning system.

Ashley R Cooper1, Angie S Page, Benedict W Wheeler

  • 1Department of Exercise, Nutrition, and Health Sciences, University of Bristol, Bristol, United Kingdom. ashley.cooper@bris.ac.uk

American Journal of Preventive Medicine
|February 2, 2010
PubMed
Summary
This summary is machine-generated.

Walking to school significantly boosts children's physical activity, with the journey contributing substantial moderate to vigorous physical activity (MVPA). This study highlights the importance of active commutes for child health.

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Area of Science:

  • Pediatric physical activity research
  • Environmental determinants of health
  • Public health interventions

Background:

  • The school journey's contribution to children's physical activity remains under-researched.
  • Previous studies indicate walking to school correlates with higher activity levels.

Purpose of the Study:

  • To quantify the level and location of physical activity during the school commute.
  • To investigate the role of active school travel in children's daily physical activity.

Main Methods:

  • Utilized accelerometry and GPS tracking in 137 London children (aged 11.3 years).
  • Time-matched accelerometer and GPS data to determine activity and location.
  • Employed Geographic Information Systems (GIS) for journey mapping.

Main Results:

  • Walkers exhibited 43% higher physical activity (878.8 cpm vs 608.7 cpm) than car travelers before school.
  • The school journey accounted for 11% of daily moderate to vigorous physical activity (MVPA).
  • Activity during the walk was double that in the playground, contributing three times more MVPA.

Conclusions:

  • The school journey is a purposeful contributor to children's total physical activity and MVPA.
  • Integrating accelerometer and GPS data enhances understanding of physical activity's environmental context.