Police Forces Across the UK use Crime Scene Investigators - Forensic Report Assignment Help

Assignment Task

TASK – Process optimisation
Background
Police forces across the UK use Crime Scene Investigators(CSIs) to collect forensic evidence from crime scenes. Matching fingerprints or DNA to people on existing crime databases usually take around a week or two with current technologies. Newer digital and DNA technologies mean results can be gained from this forensics evidence faster than ever before. Digital fingerprints can be processed in minutes, and DNA samples can be analysed in hours rather than days. However, such rapid turnaround times requires a change in the way forensics labs operate, which are usually set up to deliver fingerprint matches for petty crimes, such as burglary and theft, within a few days and DNA matches within a week.
A trial of these new, faster technologies (Digital Fingerprinting and Rapid DNA) was undertaken by West Yorkshire Police (WYP) in 20171 and digital fingerprints have now been introduced into their forensics process. However, Rapid DNA required more development due to the sensitivity of the test.
Using lessons learned from the previous trial, you are now charged with assessing the operational performance of Digital Fingerprints and Rapid DNA technologies.

Topic: Operational characteristics of the Digital Fingerprints process
In the traditional fingerprinting process a CSI dusts for fingerprints; if they find one they literally use Sellotape to take a physical imprint of the fingerprint! A handwritten form is then completed to take notes on the sample. The physical sample is transported back to the police station and the form manually input into the system by the CSI. The sample is then transported to the force’s forensics lab before a photo is taken of the fingerprint and it is uploaded into the digital fingerprint ID matching database. Each of these steps requires significant waiting time (for example, waiting for the CSI to return to the station, waiting for the transport to the lab, waiting in the queue to be input into the Fingerprint ID database).
In the Digital Fingerprinting process, the CSI still dusts for prints, but now has a camera with a 4G network card inside it. A photo of the print is taken and the file of that print is immediately sent to a database at the forensics lab. Still at the crime scene, the CSI fills in the accompanying form on a tablet, which also has a 4G card in it. Once the crime scene form has been uploaded to the system the fingerprint photo file is immediately sent to the Fingerprint ID database for matching.
Given historical crime patterns in your area, you estimate that there is, on average, a petty crime every 16 minutes (exponentially distributed). The trial data from WYP suggests that it takes, on average, a CSI 50 minutes to travel to a crime scene, take a fingerprint and send off the photo and the accompanying form (again, exponentially distributed). Assume CSIs are available 24 hours per day, 7 days per week.

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