Forensic validation

This event brought together practitioners and researchers to enhance information-sharing and promote collaboration among the impression, pattern, and trace evidence analysts, law enforcement, and legal communities.

The symposium was presented by the NIJ Forensic Technology Center of Excellence January 22-25, 2018.

Review the conference proceedings (pdf, 161 pages).

The NIJ Forensic Science Research and Development Symposium is a free and open meeting where attendees learn about NIJ-funded research across a variety of forensic science areas. This is one of 17 videos recorded at the 2018 symposium.

The symposium was presented by the NIJ Forensic Technology Center of Excellence on February 18, 2018.
 

This recording one of a group of presentations on Analysis of NPS – Practical Considerations and Analytical Approaches, which is session II in the Best Practices Guidance for Advancing Research Initiatives and Combatting the Synthetic Drug Epidemic Online Workshop Series.

The workshop was presented by the NIJ Forensic Technology Center of Excellence on July 25, 2018.

This recording one of a group of presentations on Analysis of NPS – Practical Considerations and Analytical Approaches, which is session II in the Best Practices Guidance for Advancing Research Initiatives and Combatting the Synthetic Drug Epidemic Online Workshop Series.

The workshop was presented by the NIJ Forensic Technology Center of Excellence on July 25, 2018.

This recording one of a group of presentations on Analysis of NPS – Practical Considerations and Analytical Approaches, which is session II in the Best Practices Guidance for Advancing Research Initiatives and Combatting the Synthetic Drug Epidemic Online Workshop Series.

The workshop was presented by the NIJ Forensic Technology Center of Excellence on July 25, 2018.

This recording one of a group of presentations on Analysis of NPS – Practical Considerations and Analytical Approaches, which is session II in the Best Practices Guidance for Advancing Research Initiatives and Combatting the Synthetic Drug Epidemic Online Workshop Series.

The workshop was presented by the NIJ Forensic Technology Center of Excellence on July 25, 2018.

This webinar highlighted the results of a full developmental validation of a method that estimates the A Posteriori Probability (APP) of the number of contributors in a DNA sample(NOC), and demonstrated that estimating the APP based on peak heights outperforms methods that rely on binary determinations alone. This presentation focused on including the true NOC in Likelihood Ratio interpretations and on repeatability.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on July 14, 2020.

The Scientific Working Group on DNA Analysis Methods (SWGDAM) and other bodies have published guidelines that specify empirical studies to be performed to assess reliability, identify limitations and develop suitable usage conditions for probabilistic genotyping systems.

This video is one of four from the Virtual Workshop Series: 3D Firearm Imaging, hosted by the NIJ Forensic Technology Center of Excellence from August 21 to September 11, 2024. Throughout this workshop series, attendees hear from a range of presenters and subject matter experts.  

This video includes a presentations by Todd Weller, Weller Forensics, and Rachael Gominsky, Federal Bureau of Investigation Session.

While forensic DNA analysis can identify an individual(s) at a crime scene, it cannot identify the biological source from which that DNA was obtained – e.g. blood, saliva, or semen. Identification of the biological source of DNA can provide important contextual information for forensic investigations as well as evidence in court. Nearly all current methods used for body fluid identification are presumptive. Here we present a new proteomic mass spectrometry method for the confirmatory identification of blood, saliva, and semen.