TY - JOUR PY - 2017// TI - An evaluation of the discriminating power of an Integrated Ballistics Identification System(®) Heritage™system with the NIST standard cartridge case (Standard Reference Material 2461) JO - Forensic science international A1 - Morris, Keith B. A1 - Law, Eric F. A1 - Jefferys, Roger L. A1 - Dearth, Elizabeth C. A1 - Fabyanic, Emily B. SP - 188 EP - 193 VL - 280 IS - N2 - Through analysis and comparison of firing pin, breech face, and ejector impressions, where appropriate, firearm examiners may connect a cartridge case to a suspect firearm with a certain likelihood in a criminal investigation. When a firearm is not present, an examiner may use the Integrated Ballistics Identification System (IBIS(®)), an automated search and retrieval system coupled with the National Integrated Ballistics Information Network (NIBIN), a database of images showing the markings on fired cartridge cases and bullets from crime scenes along with test fired firearms. For the purpose of measurement quality control of these IBIS(®) systems the National Institute of Standards and Technology (NIST) initiated the Standard Reference Material (SRM) 2460/2461 standard bullets and cartridge cases project. The aim of this study was to evaluate the overall performance of the IBIS(®) system by using NIST standard cartridge cases. By evaluating the resulting correlation scores, error rates, and percent recovery, both the variability between and within examiners when using IBIS(®), in addition to any inter- and intra-variability between SRM cartridge cases was observed.

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Language: en

LA - en SN - 0379-0738 UR - http://dx.doi.org/10.1016/j.forsciint.2017.09.004 ID - ref1 ER -