Overview In the tale of the Emperor’s New Clothes, a vain emperor commissions a new set of robes that he is told will be invisible to anyone who does not deserve his position, or is extraordinarily stupid or foolish. Of…
Category: Impression & Pattern (page 18)
Swipes, Wipes and Transfer Impressions
Overview Swipes, wipes and transfer impressions are the only bloodstain patterns not created by blood in flight (with the exception of flowing blood). The patterns adhere to Locard’s principle which states that when two objects come in contact with each…
R&D 2014 – Fundamental Forensic Science Research-Part II
Overview This archival portion of the 2014 R&D Seminar Series covers the following presentations: Quantitative Metrics of Friction Ridge Detail Derived from Information Theory by Thomas Busey Definition of the Concept of Sufficiency in Latent Print Examination by Cedric Neumann…
R&D 2014 – Fundamental Forensic Science Research – Part I
Overview This archival portion of the 2014 R&D Seminar Series covers the following presentations: Review on some Fluid Dynamics Aspects of Bloodstain Pattern Analysis – Daniel Attinger From Basic Research to Routine Use in the Courtroom: Elemental Analysis and Comparisons…
Shooting Reconstruction: 4 Elements of Trajectory
Overview A key part of any shooting incident reconstruction is the determination of a projectile’s trajectory through items at the scene. The path of a bullet hole has 4 main elements that require measurement, estimation, or other determination where possible.…
New Paradigm for Fingerprint Reporting
Overview In November 2015, the Defense Forensic Science Center (DFSC) issued an Information Paper announcing the decision to cease the use of the terms “individualization” and “identification” in latent print technical reports and expert witness testimony. This webinar provided an…
Magneto-Optical Sensor Roundtable
Overview The discovery of more effective methods to detect and restore erased markings in firearms is of great interest to firearm examiners, in particular the invention of new nondestructive methods. Magneto optical (MO) sensor technology may address this need. Earlier…
Latent Fingerprints: Reducing Erroneous Exclusions
Overview This presentation discusses reducing erroneous exclusions in latent fingerprints. The exclusion decision is a fairly recent change in latent print comparisons, and the discipline is still struggling with how to handle exclusions. Erroneous exclusions are being discovered with surprising…
Latent Fingerprints: Developing Methods and New Technology
Overview The first presentation given by Mark Dadmun is titled: Developing Methods to Improve the Quality and Efficiency of Latent Fingermark Development by Superglue Fuming. The second presentation given by Igor Pacheco and Brian Cerchiai titled: A Research Study for…
Fluorescence of Blood Impressions with Acid Yellow
Overview Blood impressions are associated with serious crimes against people, and are frequently recorded in the blood of either the perpetrator or the victim, often establishing a close connection in time between the two. A certificate of completion is available…