2009 MRes projects
- Speech enhancement using the binary mask method and its application to law enforcement
- Can crime science tools help tackle internal child sex trafficking in the UK?
- Assessing and improving whole body scanners through public involvement
- Beyond primary transfer: The secondary transfer of geoforensic trace particulates and their dissemination within social networks
- Use of a mirror-symmetry prior in small vehicle imaging
- Predicting the position of the source of blood stains for angled impacts on fabrics and exploring the effects of surface roughness on stain characteristics
- Attention to detail predicts threat detection performance in security X-ray images
- Small vehicle inspection scanner imaging: SVXi
- An evaluation of CCTV monitoring strategies for hospital security
Beyond primary transfer: The secondary transfer of geoforensic trace particulates and their dissemination within social networks
18 January 2011
Transfer experiments were undertaken in order to explore the topic of the secondary transfer of trace geoforensic particulates and the potential for evidence dissemination within social/contact networks. UV-powder was introduced to an individual in three experimental scenarios. Samples from individuals and surfaces were analysed using an image-rasterisation technique in MATLAB which quantified the recovered material.
Trace geoforensic particulates underwent secondary, tertiary and quaternary transfers along chains of individuals and surfaces, while particulates were disseminated within the entire contact network of an individual. Such findings can inform forensic protocol: Sampling the entirety of contact networks is recommended, while amalgamating transfers of different orders during analysis could curtail the sequencing of transfers. The possibility of secondary transfer to innocent parties must be heeded when interpreting evidence, as well as the possibility of mistaking recent secondary transfers for decayed primary transfers.