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Forensic Science

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Displaying 326 - 350 of 525

The Second National Ballistics Imaging Comparison (NBIC-2)

January 5, 2015
Author(s)
Theodore V. Vorburger, James H. Yen, Jun-Feng Song, Robert M. Thompson, Thomas Brian Renegar, Xiaoyu Alan Zheng, D Ott, Martin G. Ols
In response to the guidelines issued by the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB-International) to establish traceability and quality assurance in U.S. crime laboratories, NIST and the ATF initiated a

Influence of Chemical Straightening on the Stability of Drugs of Abuse in Hair

October 8, 2014
Author(s)
Jeanita Pritchett, Karen W. Phinney
Chemical straightening, also known as a relaxer, is ubiquitously used among African American women to obtain straighter hair compared with their natural tresses. This study focused on the stability of drugs of abuse in hair after a single application of

Generalizing Face Quality and Factor Measures to Video

September 23, 2014
Author(s)
Yooyoung Lee, P. Jonathon Phillips, James Filliben, J. R. Beveridge, Hao H. Zhang
Methods for assessing the impact of factors and image-quality metrics for still face images are well-understood. The extension of these factors and quality measures to faces in video has not, however, been explored. We present a specific methodology for

Advanced Topics in Forensic DNA Typing: Interpretation (textbook)

September 1, 2014
Author(s)
John M. Butler
This book is primarily intended for DNA analysts or those trying to understand what a DNA analyst does in his or her review of forensic DNA data that was obtained by polymerase chain reaction (PCR) amplification and short tandem repeat (STR) typing via

Rapid PCR Protocols for Forensic DNA Typing on Six Thermal Cycling Platforms

August 22, 2014
Author(s)
Peter Vallone, Erica Romsos
Rapid PCR protocols for the amplification of typing short tandem repeat multiplexes were evaluated on 6 different thermal cyclers. PCR primers from the commercially available multiplex short tandem repeat typing kit Identifiler were used to target 15 STR

A Measurement Metric for Forensic Latent Fingerprint Preprocessing

July 31, 2014
Author(s)
Haiying Guan, Andrew Dienstfrey, Mary Frances Theofanos, Brian Stanton
Although fingerprint mark-up and identification are well-studied fields, forensic fingerprint image preprocessing is still a relatively new domain in need of further scientific study and development of guidance of best practice. Latent fingerprint image

Approximate Matching: Definition and Terminology

July 2, 2014
Author(s)
Frank Breitinger, Barbara Guttman, Michael McCarrin, Vassil Roussev, Douglas R. White
This document provides a definition of and terminology for approximate matching. Approximate matching is a promising technology designed to identify similarities between two digital artifacts. It is used to find objects that resemble each other or to find

ITL Forensic Science Program

June 5, 2014
Author(s)
Barbara Guttman, Martin Herman, Michaela Iorga, Larry Feldman, Kim Quill
Forensic science provides the methodologies for understanding crime scenes. It is used for analyzing evidence, identifying suspects, and prosecuting and convicting criminals while exonerating innocent people. To maintain the integrity of the U.S. criminal

Identifying Face Quality and Factor Measures for Video

May 20, 2014
Author(s)
Yooyoung Lee, P. Jonathon Phillips, James Filliben, J. R. Beveridge, Hao Zhang
This paper identifies important factors for face recognition algorithm performance in video. The goal of this study is to understand key factors that affect algorithm performance and to characterize the algorithm performance. We evaluate four factor

Guidelines on Mobile Device Forensics

May 15, 2014
Author(s)
Richard Ayers, Sam Brothers, Wayne Jansen
Mobile device forensics is the science of recovering digital evidence from a mobile device under forensically sound conditions using accepted methods. Mobile device forensics is an evolving specialty in the field of digital forensics. This guide attempts

A Model Towards Using Evidence from Security Events for Network Attack Analysis

April 27, 2014
Author(s)
Changwei Liu, Anoop Singhal, Duminda Wijesekera
Constructing an efficient and accurate model from security events to determine an attack scenario for an enterprise network is challenging. In this paper, we discuss how to use evidence obtained from security events to construct an attack scenario and

Adaptive Representations for Video-based Face Recognition Across Pose

March 25, 2014
Author(s)
P. Jonathon Phillips, Yi-Chen Chen, Vishal M. Patel, Rama Chellappa
n this paper, we address the problem of matching faces across changes in pose in unconstrained videos. We pro- pose two methods based on 3D rotation and sparse representation that compensate for changes in pose. The first is Sparse Representation-based
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