• Summary
  • Contents
  • Subject index

This volume shows how state-of-the-art geographic information systems (GIS), used to display patterns of crime to stimulate effective strategies and decision-making, are revolutionizing urban law enforcement. The contributors present expert information for understanding and successfully employing the latest technologies in this field.

The Utility of Standard Deviation Ellipses for Evaluating Hot Spots
The utility of standard deviation ellipses for evaluating hot spots
Robert H.Langworthy
Eric S.Jefferis
Authors' Note: The points of view expressed in this chapter are those of the authors and do not necessarily represent the view of the U.S. Department of Justice or the National Institute of Justice. All of the tables and figures to which this chapter refers can be found on the World Wide Web at http://www.urbanresearch.org

Only recently have criminologists begun widespread use of spatial analysis techniques to understand crime data. This stems in large measure from a shift in emphasis from efforts to understand criminals to an effort to understand crime.1 The drift toward a spatial focus is compelling because factors converge in space to ...

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