A Fiber Data Collection for Forensic Scientists—Collection and Examination Methods

Laing, D.K.; Hartshorne, Andrew W.; Cook, R.; Robinson, Geoffrey

doi:10.1520/jfs11139j

Cited by 31 publications

(3 citation statements)

References 7 publications

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“…Colour measurements from garments made from natural fibres exhibit greater variability. For a full description of the data collection methodology, see Laing et al (1987).…”

Section: Database Informationmentioning

confidence: 99%

The Evaluation of Fibre Transfer Evidence in Forensic Science: A Case Study in Statistical Modelling

Wakefield¹,

Skene²,

Smith³

et al. 1991

Applied Statistics

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SUMMARY Frequently, when a crime is committed, fibres are left at the scene. This paper examines the modelling aspects of evaluating the evidential content of such fibres by using a Bayesian approach. Inferences are made via the likelihood ratio, derived from bivariate colour measurements. Modelling the distribution of colour within a particular garment is discussed in detail. In addition, a large database allows an empirical prior distribution to be incorporated, utilizing kernel density estimation. Data from actual casework are analysed.

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“…Colour measurements from garments made from natural fibres exhibit greater variability. For a full description of the data collection methodology, see Laing et al (1987).…”

Section: Database Informationmentioning

confidence: 99%

The Evaluation of Fibre Transfer Evidence in Forensic Science: A Case Study in Statistical Modelling

Wakefield¹,

Skene²,

Smith³

et al. 1991

Applied Statistics

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“…The evidential value of fiber evidence has been reviewed with emphasis on fiber transfer, persistence after transfer, evidence collection, and fiber analysis (477). Methods used to establish a fiber data base have been described. The data base includes fiber sources, types, and colors, and provides a means of assessing the significance of fiber matches (478). A computerized data base of textile fibers proved useful for the identification of fibers encountered as evidence (479).…”

Section: Forensic Biochemistrymentioning

confidence: 99%

Water analysis

MacCarthy¹,

Klusman²,

Rice³

1989

Anal. Chem.

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“…Recent examples include classification of fiber evidence [32,33] and inks [34,35]. Quantitative color analysis was first proposed in 1931 by the Commission Internationale d'Eclairage (CIE).…”

Section: Background Information and Forensic Applicationsmentioning

confidence: 99%

Application of cathodoluminescence and quantitative color analysis to the study of glass for forensic purposes

Nawrocki¹

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Application of Cathodoluminescence and Quantitative Color Analysis to the Study of Glass for Forensic Purposes By Heidi Nawrocki Forensic analysis of glass has traditionally relied on the use of refractive index (RI) measurements and physical methods for matching. The current study utilized cathodoluminescence (CL) spectroscopy, combined with RI and quantitative color analysis. CL is a phenomenon that occurs when light is emitted from a material upon electron bombardment. Scanning electron microscopy coupled with CL detection was used for analysis. Standard glass samples from NIST were used for method development, while samples obtained from the Crime Scene Complex at West Virginia University and headlight glass samples from Jordan Auto Parts in Pennsylvania were used to evaluate the method. Additionally, a breaking and entering scenario was carried out. Replicate CL spectra were obtained from each sample, as well as refractive index measurements. Results indicate that the combination of CL, RI, and color analysis allows for the successful differentiation of samples.

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A Fiber Data Collection for Forensic Scientists—Collection and Examination Methods

Cited by 31 publications

References 7 publications

The Evaluation of Fibre Transfer Evidence in Forensic Science: A Case Study in Statistical Modelling

The Evaluation of Fibre Transfer Evidence in Forensic Science: A Case Study in Statistical Modelling

Water analysis

Application of cathodoluminescence and quantitative color analysis to the study of glass for forensic purposes

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