Forensic and Investigative Sciences

Analyzing, comparing, and evaluating forensic digital images relies on understanding two essential elements: image quality and image clarity.  Resolution provides image quality, while bit depth provides clarity between the details in an image. It is important to understand how image quality and clarity can affect the probative value of a forensic digital image as well as an examiner’s ability to accurately analyze those images. 

This webinar was presented by the NIJ Forensic Technology Center of Excellence on August 3, 2021.
 

This webinar will provide an overview of overdose fatality reviews (OFRs) with a specific focus on engaging partnerships with coroners, medical examiners, and medicolegal death investigators.  The presenters will highlight OFRs that have been implemented by engaging the medicolegal death investigation system and will discuss challenges and recommendations associated with implementing an OFR. The webinar will consist of three presentations on OFRs highlighting a county-level, a rural community, and a state-wide approach.

Over the last ten years, numerous novel psychoactive substances (NPS) have emerged in the recreational drug supply. Upon synthesis or discovery, each of these drugs has been given a name other than its IUPAC chemical name, primarily for ease of communication. This has resulted in various naming convention for NPS, sometimes multiple within a given subclass. This webinar is aimed at tackling the naming conventions for NPS and the associated challenges encountered along the way.

This webinar will facilitate a discussion about bias in a crime laboratory including what is bias in forensics, how it can impact your operations, why it is important, and considerations when building this culture. The webinar will include important aspects of an unbiased culture, symptoms that your culture is biased, and examples from the Phoenix Police Department, the Virginia Department of Forensic Sciences, and ICITAP’s.

This webinar was hosted by the NIJ Forensic Technology Center of Excellence in July 2021.

In this webinar, attendees will learn a variety of strategies to keep participants engaged in an online meeting environment. In addition to reviewing these strategies, attendees will also be provided with factors to keep in mind when creating and selecting strategies for engagement. Attendees will also learn about features available in Zoom. T

his webinar was presented by the NIJ Forensic Technology Center of Excellence on July 7, 2021.

Microhaplotypes (microhaps) are biomarkers fewer than 300 nucleotides long that display multiple allelic combinations. The main advantages of microhaps over conventional short tandem repeats (STRs) include the 1) absence of stutter, 2) same-size alleles within each locus, 3) lower mutation rate, and 4) ancestry informative alleles. These forensically relevant loci can yield a power of discrimination similar to STRs while enhancing human identification (HID), mixture deconvolution, and biogeographic ancestry prediction.

The webinar will cover microbial research in nontraditional forensics such as environmental contamination, foodborne illness, plant pathogens, and antibiotic resistance source tracking. The webinar will conclude with needs that must be met for chains of custody and current limitations to forensic microbiology.

This webinar was hosted by the NIJ Forensic Technology Center of Excellence on June 21, 2021.

In this webinar, the presenter will cover key components of successful onboarding in a crime lab, including setting employee expectations and making the employee feel like part of the team.  The presenter will go over an onboarding checklist so you can devise one that suits your agency’s needs.  Lastly, the presenter will discuss how successful onboarding can get the new employee “fired up” and increase employee engagement overall.   

LatentSleuth is a novel software tool set designed for (and with direct feedback from) latent print examiners. The toolset includes a small-scale automated fingerprint identification system (AFIS) matcher that leverages a novel matching algorithm that calculates a warp between a latent print image and a given reference print image. This webinar will demonstrate a comprehensive quantification of a latent images entire structure and how that quantification is exploited in a commercially available workstation for latent print examination. 

This webinar will provide an overview of the validation, implementation of 3D  technology at the FBI Laboratory’s Firearms/Toolmarks Unit. This presentation will highlight the process, including Standard Operating Procedures, laboratory workflow, selection of casework, blind verification, reexamination of casework using light microscopy and Daubert preparation.

This webinar was presented by the NIJ Forensic Technology Center of Excellence on June 2, 2021, as part of the 2021 ASCLD Train the Director Series.