Jerry Ratcliffe's homepage

Intelligence-led policing is a business model and managerial philosophy where data analysis and crime intelligence are pivotal to an objective, decision-making framework that facilitates crime and problem reduction, disruption and prevention through both strategic management and effective enforcement strategies that target prolific and serious offenders.
Source: Ratcliffe, JH (2008) 'Intelligence-Led Policing'. Willan Publishing: Cullompton, Devon (page 89).
Want to read more about intelligence-led policing?

Recent additions to the site
Intelligence-Led Policing - the book
More information on the subject here, or go directly to the publisher's book site to pre-order this seminal work (!)

Buffer Intensity Calculator
Did you see the Buffer Intensity Calculator software at the International Crime Mapping conference in Pittsburgh or the National Crime Mapping conference in London? If you want the software (yes, it is free), you can find it here.

Crime around drug corners in Camden, NJ
New article forthcoming in the new journal Crime Patterns and Analysis, co-authored with George Rengert. Draft available as a downloadable PDF

Video Surveillance of Public Places
A recent publication from the COPS office, featured on the POPcenter web site. A guide for police officers considering CCTV as a crime prevention measure. Available from the COPS office in two formats: HTML or PDF

Near Repeat Calculator
Free software download that enables you to calculate the extent of the near repeat phenomenon, with simple x, y and date data.Details here...


PowerPoint advice, presentation tips, essay writing guide, how to reference, how to study, Jerry's top ten mapping tips! A selection of recent publications written or co-written by the author. Most available to download in pdf format. Current research being undertaken by the author in the field of crime mapping/spatial and temporal analysis. Information about the Aoristic analysis, the Modifiable Areal Unit Problem and other current issues. Recently published books exploring thinking in criminal intelligence, crime mapping, and illegal drug markets are now available. Details of these texts can be found here. .	Intelligence-led policing is a business model and managerial philosophy where data analysis and crime intelligence are pivotal to an objective, decision-making framework that facilitates crime and problem reduction, disruption and prevention through both strategic management and effective enforcement strategies that target prolific and serious offenders. *Source: Ratcliffe, JH (2008) 'Intelligence-Led Policing'. Willan Publishing: Cullompton, Devon (page 89).* Want to read more about intelligence-led policing? Recent additions to the site Intelligence-Led Policing - the book More information on the subject here, or go directly to the publisher's book site to pre-order this seminal work (!) Buffer Intensity Calculator Did you see the Buffer Intensity Calculator software at the International Crime Mapping conference in Pittsburgh or the National Crime Mapping conference in London? If you want the software (yes, it is free), you can find it here. Crime around drug corners in Camden, NJ New article forthcoming in the new journal Crime Patterns and Analysis, co-authored with George Rengert. Draft available as a downloadable PDF Video Surveillance of Public Places A recent publication from the COPS office, featured on the POPcenter web site. A guide for police officers considering CCTV as a crime prevention measure. Available from the COPS office in two formats: HTML or PDF Near Repeat Calculator Free software download that enables you to calculate the extent of the near repeat phenomenon, with simple x, y and date data.Details here...	A few MapInfo routines that you might find useful, and SPAM (the predecessor of HotSpot Detective®), the better program. Weighted Displacement Quotient calculator Near Repeat Calculator Generate crime density maps from within MapInfo with minimum effort. Designed for police officers who may not have a GIS/spatial analysis background. Includes a geocoding address scrubber and temporal analysis graphers. HotSpot Detective® is a registered trade mark. Short bio with links to snail mail contact details, and an on-line cv. If you want an alternative resume from the stuffy professional one, try looking here... Handouts, web sites referenced and general notes from selected conference presentations. OK, so it might be difficult picking ten good links, but these are my favourites...

Unable to access the Flash links above? Try these... Jerry's top ten tips - research publications - research and spatial questions - top ten links - published books - conference notes - student links - contact details and cv - HotSpot Detective - download software The author gives permission for textual material on this site to be freely used for any non-commercial purpose, provided that acknowledgment of the author (Dr J. H. Ratcliffe) is made. This permission does not cover any software products in this site that each document their own copyright licence. Neither does this permission cover any journal articles either published or in press, as the copyright for these items generally lies with the publisher. Separate worldwide copyright applies to software products. HotSpot Detective® is a registered trade mark. If you use Jerry's tips, please acknowledge them. Cheers! Standby for a boring caveat: The views in these pages are all my own, and are not necessarily deeply considered and can change at any time or under the influence of alcohol. More importantly, the views expressed here do not necessarily represent the views of Temple University, Charles Sturt University, the Australian Institute of Criminology, the National Institute of Justice, the Philadelphia Police Department, the New Jersey Attorney General, Camden Police Department, any Australian Police Service (Federal or State), the US Director of National Intelligence or anyone else who has employed/tolerated me at various times...though they should! This site was last updated (somewhere in the site) on 12th March 2008.