We studied the richness and composition of diurnal birds in relation to the percentage of built surfaces in an urban area of Mediterranean France and analyzed their seasonal variation.
The spatial analysis reveals that percentage of built area and gross household income explain differences in the prevalence of swine flu between regions.
When analyzing the various explanatory factors of the swine-flurates in different sub-districts, using the stepwise approach, only two factors stood out as significant - percentage of built area and gross household income (P-value = 0.0001, R2 = 0.77).
The coefficient of determination (r) for percentage of houses built before 1940 was 10% stronger than the coefficient for percentage of houses built before 1950, so we used the former.
Surveys by CNW show that buyers of Asian-brand vehicles -- a growing percentage of them built in American factories -- have a distinctly different profile from Detroit's customers.
"This was born out of the housing collapse" that followed the crisis, says Tim Costello, chairman and chief executive of Builder Homesite, as the percentage of newly built homes out of the total number of houses sold each year tumbled to 5 percent from a typical range of 15 to 20 percent.
Figure 1, for example, from a study of childhood lead poisoning, shows maps at three different scales (U.S. census block group, ZIP codes, and counties) of the percentage of homes built before 1950 (a major risk factor for childhood lead overexposure) in New Jersey based on U.S. census data reported at the block group level of resolution.
Environmental factors (distance to CSO and catch basins, elevation, land use, and canopy coverage) were averaged per tract, whereas tract estimates of sociodemographic factors (i.e., median household income and percentage of houses built in the 1950s and 1960s) were obtained from the 2000 U.S. census (U.S. Census Bureau 2000).
Census tracts with low SPb are associated with new housing, but census tracts with high SPb are evenly split between old and new housing [Fisher's exact test, p = 8.60 X 10 -13 10 -13he percentage oforousing builtheefore 1940 (percentagee-1940 hofsing) versus SPb].
Open image in new window Fig. 13 Percentage of built-up land within buffer of drainage channels/stream segments in RUA in 2010.
The percentage of built-up land within the buffer zones of 25 and 25 50 m comprises about 25 and 15 % area, respectively.
