Iowa State Highway Map, January 1, 2010

State highway map of Iowa for 2010, produced by Iowa Department of Transportation.

Iowa Rails and Trails Map, July 1, 2007

Iowa Rails and Trails Map

Iowa Railroad Service Map, July 1, 2012

Iowa railroad service map of Iowa trains in color.

Iowa State Railroad Map, July 1, 2004

Iowa railroad map of Iowa trains.

Iowa State Railroad Map, July 1, 2012

Iowa railroad map of Iowa trains.

Front propagation in spatially modulated media

A two-dimensional reaction-diffusion front which propagates in a modulated medium is studied. The modulation consists of a spatial variation of the local front velocity in the transverse direction to that of the front propagation. We study analytically and numerically the final steady-state velocity and shape of the front, resulting from a nontrivial interplay between the local curvature effects and the global competition process between different maxima of the control parameter. The transient dynamics of the process is also studied numerically and analytically by means of singular perturbation techniques.

Wave competition in excitable modulated media.

The propagation of an initially planar front is studied within the framework of the photosensitive Belousov-Zhabotinsky reaction modulated by a smooth spatial variation of the local front velocity in the direction perpendicular to front propagation. Under this modulation, the wave front develops several fingers corresponding to the local maxima of the modulation function. After a transient, the wave front achieves a stationary shape that does not necessarily coincide with the one externally imposed by the modulation. Theoretical predictions for the selection criteria of fingers and steady-state velocity are experimentally validated.

General highway and transportation map,1978.

Contains a highway map of each county in Iowa

Bouguer gravity anomaly map of Iowa,1981.

Gravity values on this map are based on 1967 International Gravity Formula and are reduced to sea level with a Bouguer Density of 2.67 g/cm3.

Traffic map, Iowa,1984.

Traffic volumes represented on this map are average volumes between major traffic generators: highway junctions, cities, recreational areas or high volume secondary roads.

Vehicle Traffic Map, 2012

Vehicle Traffic Map produced by the Iowa Department of Transportation.

Truck Traffic Map, 2012

Vehicle Traffic Map produced by the Iowa Department of Transportation.

Iowa State Capitol Interior Floors Map, 2013

Iowa State Capitol Interior Floors Map with cell phone audio information that can be used with a smartphone audio and video.

Iowa State Capitol Monuments and Memorials Map, 2013

Iowa State Capitol Monuments and Memorials Map

July 2009 Rail Company Abandonment Plans Map, 2009

This is a map of railroad lines in Iowa under study to be abandoned.