Photo Essay: The Emerald Ash Borer

The photos in this essay chronicle the process of tree removal.The Emerald Ash Borer is an exotic Asian beetle that is killing most of the ash trees in Southeast Michigan. First identified in 2002 by David Roberts, Ph.D. Michigan State University (http://web1.msue.msu.edu/reg_se/roberts/ash/) the infestation is spreading to other parts of Michigan and adjacent states despite mitigation efforts and quarantines by state and federal environmental agencies (http://www.emeraldashborer.info/files/TriState_EABpos.pdf) . The beetle was probably introduced to North America by infested solid wood packing material for cargo imported from Asia through the Port of Detroit. There are millions of ash trees in Michigan alone and many more millions across North America. As of 2005 eight to ten million ash trees in Southeast Michigan have died.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/58326/1/NystuenArticle.pd

SunSweep: A Visit on the Summer Solstice

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60254/1/Reprint97Sunsweep.pd

The Thunen Society, North American Division

The Thünen Society, North American Division is an American organization interested in fostering the memory and current applications of the works and spirit of Johann Heinrich von Thünen (1783-1850), a 19th Century German landowner, farmer and intellectual. Thünen's seminal ideas on agricultural location theory, the economic notion of the marginal rate of return, social welfare and the value of individual freedom of choice in matters economic and political have influenced generations of regional economists and geographers worldwide. His ideas are still current today and can be used as a guide in understanding the future.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60286/1/thunenindex.pd

Set in Stone: An Analemma in Northern Italy

On a recent trip through the less traveled parts of northern Italy (less traveled compared to the crowds encountered in Rome, Florence, and Venice) our traveling party found expected, and surprising, evidence of the great contributions to our modern world made by Italians in the first and second millennia. The evidence is set in stone.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60269/1/nystuen.pd

Book Review: The Universe Below

Book Review: The Universe Below by William J. Broad. New York: Simon and Schuster, 1997, 432 pages.http://deepblue.lib.umich.edu/bitstream/2027.42/60260/1/nysrev.pd

Fifty Years of Spatial Analysis: A Symposium in Honor of William L. Garrison, 1950-2000

http://deepblue.lib.umich.edu/bitstream/2027.42/60273/1/reunion.pd

Metropolitan Mining: Institutional and Scale Effects on the Salt Mines of Detroit

Mining, as with most industrial activities, is constrained by logistics, which involves technological matters of transportation, material conversion and energy costs. Convention and law also influence the activity. These are institutional matters involving mineral rights and access to resources. Both logistical and institutional configurations exist in a space/time context and in motropolitan areas, where geographic space is a complex mosaic of private and public property, the limits to an industrial activity are nicely illustrated in the example of the salt mines of Detroit.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60264/1/salt.pd

Differences in Feature Representation in Digital Map Databases

Map databases are integral to many ITS (Intelligent Transportation Systems) applications in navigation, traffic forecasting, and route planning. With the increasing deployment of ITS technology demands for accurate and complete digital map databases of the nation's road network are surging. The development and maintenance of high quality digital map databases is expensive and time-consuming. Database sharing will be a sensible approach whenever possible in order to reduce cost. In the US map databses are being produced by a variety of public agencies and private vendors. Quality and levels of accuracy vary depending on data sources and production procedures. Verifying the quality and accuracy of map databases for purposes of navigation is a pragmatic and important concern. The Society of Automotive Engineers has developed a Truth-in-Labeling Standard, the goal of which is to provide a consistent method for describing and comparing map databases. While the standard requires that database vendors provide a standardized label that lists basic database characteristics such as lineage, coverage, accuracy, content and scope of a database, there are currently no guidelines for feature representation (such as the layout of road intersections) in digital databases. Comparison of two different map databases reveals significant representational differences due to differences in precision of source material, data model and intended uses.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60253/1/Reprint97Nystuen.pd

The Greening of Detroit, 1975-1992: Physical Effects of Decline

Photo EssayPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60244/1/Reprint96Ryznar.pd