Forensic and Investigative Sciences

This webinar focused on the use of PACE™, a method developed by Syracuse University, to perform artifact management and probabilistically predict the number of contributors (NOC) in forensic DNA samples. This is performed using a combination of biological modeling and machine learning, permitting high accuracy NOC calls (greater than 90%) of complex mixtures. It does so rapidly (seconds to minutes) without the need for high performance computing resources.

This webinar discussed intact low explosives analysis with a focus on microscopical methods. It covered terminology for explosives, the rationale of low explosives analysis for most crime laboratories, six categories of low explosives, and examples of three analyses using microscopical methods.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on July 16, 2020.

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.

This webinar covered management challenges unique to a digital forensics unit in a laboratory and offer practical solutions to overcome these challenges.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on July 1, 2020.
 

Highly toxic, synthetic drugs introduce significant health hazards to the forensic laboratory.  Understanding current knowledge and best practices will help laboratories manage their liability. This presenter covered topics such as known risks of handling hazardous drugs, creating a practical framework for the assessment, development, and improvement of safety systems, and additional research needed regarding exposure risks.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on June 25, 2020.

This presentation provided an overview of the activities and programs the Phoenix Police Department’s Crime Lab has implemented and the corresponding impact to the organizational culture and employee morale.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on June 18, 2020.

This webinar presented the findings of the ASCLD/NIJ collaborative Gap Assessment of Stress, Vicarious Trauma and Resiliency for Forensic Science Professionals. The assessment gathered survey responses from forensic and medical examiner laboratories to evaluate vicarious trauma, burnout, job satisfaction, and participants perceptions of their organization’s resiliency efforts.  Our findings inform future directions in research, policy, and practice to better manage stress and increase resiliency among forensic professionals.

Residential structure fires are predominantly fueled by synthetic contents and commonly become ventilation-limited.  Therefore accounting for the impact of ventilation on fire is important. Examining flow paths within the structure can aide in fire pattern analysis.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on June 10, 2020. 

Using a typical OEM paint system, the PDQ Maintenance Team will walk through the best practices to efficiently use the database and spectral libraries to identify the most likely source of an unknown paint system. Details gathered from this process include manufacturing plant, year range, and models.

Sergeant Jason Moran of the Cook County (IL) Sheriff’s Office discusses the current situation of cold cases in the United States, why it’s important to establish cold case units, how current tools and technology can help solve cold cases, and what National Institute of Justice resources are available to assist in solving cold cases.

Sergeant Moran was a participant on an NIJ Saturday Session panel at IACP 2019.