NRC Study: Precision Geodetic Infrastructure: National Requirements for a Shared Resources

…from the Committee on the National Requirements for Precision Geodetic Infrastructure; Committee on Seismology and Geodynamics; National Research Council…

“Recognizing that the precise geodetic infrastructure is a shared national resource, and responding to the Decadal Survey’s warning that this infrastructure is degrading and at risk of collapse, NASA, NOAA, NSF, USGS, the U.S. Naval Observatory, and the National Geospatial-Intelligence Agency asked the National Research Council to establish a committee to assess the state of the U.S. geodetic infrastructure, to define the need for and role played by this infrastructure, and to make recommendations on how to maintain its viability in the future.

“Geodesy is the science of accurately measuring the Earth’s shape, orientation in space, and gravity field, and the changes in these properties over time. The precision of geodetic measurements has increased by several orders of magnitude over the past half century; in that time span, geodesy has proven immensely valuable for both scientific and commercial applications. Techniques and instrumentation developed for geodesy have enabled scientists to determine the changing position of any point on the Earth with centimeter accuracy or better. They also provide the technological underpinnings for accurately determining satellite orbits, measuring sea level rise, determining flood maps, monitoring coastal wetland changes, assessing groundwater resources, and monitoring earthquakes and other natural hazards. Even more precise and reliable geodetic measurements could enable an enormous array of advanced applications in autonomous navigation, precision agriculture, space exploration, hazard prediction, and other areas. Geodetic measurements are made using a variety of satellites, ground-based sensors and receivers, laser ranging devices, radio beacons, radio telescopes, and data-integration methods—a set of tools collectively known as the precise geodetic infrastructure.”

The Constraints and Benefits of Space and Time in Digital Social Networks

Spatio-Temporal Constraints on Social Networks Workshop, University of California, Santa Barbara, Center for Spatial Studies, 13-14 December 2010

Matthew Zook

“I highlight three key issues related to integrating the constraints and benefits of space and time in digital social networks. They are (1) selecting the appropriate space-time scale of analysis; (2) integrating space and time within existing theories of strong/weak social ties; and (3) recognizing that software is an actor.”

Top Posts of 2010

It’s that time of year when we take a look back to see how we did.  2010 was a year of growth for–traffic more than doubled compared to 2009.  But more about that later.  First let’s take a look at the most heavily visited posts over the course of the year.

Top 15 Posts of 2010

  1. Accuracy of iPhone Locations: A Comparison of Assisted GPS, WiFi, and Cellular Positioning – 5,706 page views
  2. Jack Dangermond Talks About GeoDesign at TED 2010 – 2,478 page views
  3. Spatial Statistics, Geostatistics, and GIS: Free Training Available – 2,378 page views
  4. Top Five Benefits of GIS – 2,229 page views
  5. Geospatial Modelling Environment: A Platform Designed for Rigorous Spatial Analysis and Modelling – 983 page views
  6. Hot Spot Analysis – An ArcGIS Tutorial – 873 page views
  7. Call For Papers: IJAGR Special Issue on Spatial and Temporal Data Analysis – 832 page views
  8. Original ESRI Brochure from the Late 1970s – 813 page views
  9. What Would Happen if the Earth Stopped Spinning? – 798 page views
  10. “Data for Decision”, 42 Years Later – 720 page views
  11. James Baker of the Clinton Foundation in The Economist on the Use of GIS for REDD – 706 page views
  12. GIS/Geospatial Industry Worldwide Growth Slows to 1% in 2009 – 677 page views
  13. Spatial Statistics in ArcGIS: Free Sample Chapter from the Handbook of Applied Spatial Analysis – 540 page views
  14. New Spatial Analysis Tutorial Workbook Published – 522 page views
  15. The Evolution of the Epidemic of Charcoal-Burning Suicide in Taiwan: A Spatial and Temporal Analysis – 481 page views

Perhaps most surprising here is how many of these posts were created not in 2010, but in 2009.  I guess there’s nothing like the classics.  Now let’s take a look at the most heavily visited pages over the course of the year.

Top 15 Pages of 2010

  1. Home page – 52,220 page views
  2. Resources – 2,715 page views
  3. Books – 2,576 page views
  4. GeoDesign: A Bibliography – 2,282 page views
  5. About – 2,152 page views
  6. Agent-Based Modeling and GIS – 1,261 page views
  7. Integrating GIS with Models: A Bibliography – 1,212 page views
  8. GIS and Climate Change Resources – 912 page views
  9. Interviews – 858 page views
  10. Bibliographies – 784 page views
  11. GIS for Climate Change Bibliography, Part 1: Climate Science – 699 page views
  12. Spatial Statistics and Geostatistics Resources – 696 page views
  13. Using GIS for Air Quality Management and Air Pollution Assessment: A Bibliography 588 –  page views
  14. History – 475 page views
  15. GIS for Climate Change Bibliography, Part 5: Disaster Management – 423 page views

Summary Stats

2011 saw ~187,000 page views on (as compared to ~77,000 page views in 2009). Page views for 2010 averaged 513 a day.

The busiest day for the blog was 05 November 2010, with 1,105 page views; the busiest month, November 2010 with  21,060 page views.

Happy New Year everyone!