Elizabeth R. Groff

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and Director of Strategic Communications Karima Zedan. We also would like to show our appreciation to the district commanders and patrol officers for their hospitality. The authors would like to thank Program. The points of view or opinions expressed herein are those of the authors and do not necessarily represent the official position of the Philadelphia(More)
While the use of mapping in criminal justice has increased over the last 30 years, most applications are retrospective-that is, they examine criminal phenomena and related factors that have already occurred. While such retrospective mapping efforts are useful, the true promise of crime mapping lies in its ability to identify early warning signs across time(More)
Routine activity theory identifi es the routine activities of individuals as important to understanding the convergence of elements necessary for a crime to occur. Two recent studies have demonstrated how geographically aware agent-based models can be used to provide a virtual rather than empirical laboratory for testing theory. Those studies trace the(More)
One of the challenges often presented to law enforcement agencies is the need to determine the potential effects that result from implementing technologies. Identifying and measuring the benefits of acquiring new technologies, or upgrading outdated systems and equipment, enable agencies to justify their expense to local government and to community(More)
Acknowledgements This primer benefited from the input of a variety of individuals. George Rengert, a consultant on the project, provided valuable insights regarding initial patterns of triangles and suggestions regarding the analysis plan that produced them. Both Waldo Tobler and Ned Levine reviewed and offered feedback that enhanced the sections on their(More)
Acknowledgements This research effort benefited from the input of a variety of individuals who made both substantive and technical contributions. George Rengert, a consultant on the project, provided valuable insights regarding initial patterns of triangles and suggestions regarding the analysis plan that produced them. Deborah Weisel's question about the(More)
INTRODUCTION The U.S. Department of Justice (DOJ) has developed and is piloting the Strategic Approaches to Community Safety Initiative (SACSI) as part of a continuing effort to reduce crime in communities. SACSI promotes multiagency collaboration to data-driven problem solving. This document focuses on one of four major components of SACSI, the development(More)
Crime is an ubiquitous part of society. The way people express their concerns about crimes has been of particular interest to the scientific community. Over time, the numbers and kinds of available communication channels have increased. Today, social media services, such Twitter, present a convenient way to express opinions and concerns about crimes. The(More)