Simulations of collision times in gravity driven granular flow

We use simulations to investigate collision time distributions as one approaches the static limit of steady-state flow of dry granular matter. The collision times fall in a power-law distribution with an exponent dictated by whether the grains are ordered or disordered. Remarkably, the exponents have almost no dependence on dimension. We are also able to resolve a disagreement between simulation and experiments on the exponent of the collision time power-law distribution.Comment: 7 pages, 5 figure

Census 2000 Mail Response Rate: Nebraska Counties

Maps of Nebraska Counties\u27 response rate via mail to the Census 200

Hispanic Population by County for Select States: 2000 and 2010

Hispanic Population by County for Select States (2000 and 2010

State and Local Population Trends (With a Focus on CPAR Population Projections to 2050)

This presentation features: Themes and Takeaways; Migration Moving on up ; Historic and current age structure with projection; Race/ethnicity trends; Special topics; and Summary

Census Data for Nebraska Unicameral Senate Districts for Post 2000 boundaries

Census Data for Nebraska Unicameral Senate Districts for Post 2000 boundarie

Nebraska Natural Change by Race/Ethnicity: 2005 to 2010

The natural phenomena of people being born and people passing away occur every day. Demographers call the difference between the number of births and the number of deaths “natural change”. Natural change and the net movement of persons to/from an area are factors that lead its population to change. While our office has analyzed these population change components in total, we can now break them into sub-groups such as by race/ethnicity

2020 Socioeconomic Data and What It Tells Us about the Pandemic

Learn what data is available, efficient ways to access it, and compare various statistics and trends over time