To conduct the study, researchers examined Ohio census block groups
by number of wastewater and fracking wells, socio-demographic factors such as income and education and geographic characteristics.
The database has more than 80 million records, which can be tracked from the national level all the way down to individual census tracts and block groups
, from 2000 to 2016.
We linked these location and volume data with geospatial data for Ohio's block groups
, based on the 2010 U.S.
In the 3D Tetris displays, three-dimensional block groups
constructed of small single cubic blocks arranged in different shapes keep falling into a 3D space from the top of the screen.
The level of analysis was the Census block group
. The number of GPS-tracked commuters in Strava was associated with the number of ACS active commuters (Spearman's rho = 0.60), suggesting block groups
were ranked similarly based on these distinct but related measurements.
Although poor capacity increased 10 percent from 2002 to 2008 in the population of women aged 40+, the number of women living in poor capacity block groups
increased about 5 percent in women aged 50+ and decreased about 7 percent in women aged 50-74 years.
Thus one has to create spatial target zones that make it possible to examine the statistical associations of interest, at a spatial resolution finer than that of typical census units (such as tracts or block groups
Options considered for model development range from focused, high-resolution analysis of a relatively small number of samples (100 to 200) to a much broader analysis, considering the majority of block groups
(approximately 200,000), but with estimates generated for each block group
at lower resolution.
In the 1980s, cases were more likely in census block groups
with poor housing conditions, but by the 2000s, cases were associated with affluent areas concentrated in the Santa Fe--Albuquerque region.
MUCH has been written recently in Your Say comparing the advantages and disadvantages of being represented by an independent councillor in comparison with a councillor from one of the main parties who vote in block groups
at council meetings.
Much of the current neighborhood-based research uses variables aggregated on administrative boundaries such as zip codes, census tracts, and block groups
. However, other methods using current technological advances in geographic sciences may broaden our ability to explore the spatial concentration of neighborhood factors affecting individuals and groups.