A study of the performance and utility of annealing in forensic glass analysis

Newton, Angus; Kitto, L.; Buckleton, John

doi:10.1016/j.forsciint.2004.11.008

Cited by 18 publications

(5 citation statements)

References 19 publications

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“…The discrimination of small glass fragments was demonstrated using the nondestructive technique of high-energy synchrotron radiation X-ray fluorescence spectrometry (SR-XRF) (284). A study of the performance and utility of annealing in forensic glass analysis was reported (285). The forensic discrimination of sheet glass samples combining refractive index measurements and elemental analysis with a SR-XRF were also reported (286).…”

Section: Trace Evidencementioning

confidence: 99%

Forensic Science

2007

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Short Tandem Repeats 4367 Single Nucleotide Polymorphisms 4367 Y-Chromosome and X-Chromosome Analysis 4368 Mitochondrial DNA Typing 4369 Nonhuman DNA Typing Systems and Microbial Forensics 4369 DNA Databases, Mass Screens, and Mass Disasters 4369 Interpretation and Statistical Weight of DNA Typing Results 4370 General Reviews 4370 Trace Evidence 4370 Petroleum Products and Explosives 4370 Hairs, Fibers, Glass, and Paint 4371 Gunshot Residue Analysis 4372 Fingerprints 4372 Miscellaneous Trace Evidence 4372 Drugs and Poisons 4373 Ethanol and Volatiles 4373 Cannabinoids 4373 Morphine and Related Narcotics 4373 Amphetamines 4374 Benzodiazepines 4375 γ-Hydroxybutyrate and Related Compounds 4375 Miscellaneous Drugs 4375 Other Techniques 4376 Literature Cited 4377This applications review aims to present a concise survey of articles appearing in publications that primarily appeal to forensic practitioners. With this objective, we have focused our attention on the following journals:

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Section: Trace Evidencementioning

confidence: 99%

Forensic Science

2007

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“…Moreover sometimes, a subsequent work once the glasses have been passed by an annealing process is performed. It has been applied in the case of a bi-class problem with toughened and laminated glasses [7]. Winstanley and Rydeard [8] were pioneered in talking about some annealing concepts about small glass fragments.…”

Section: Introductionmentioning

confidence: 99%

Data Mining Methods Applied to a Digital Forensics Task for Supervised Machine Learning

Tallón‐Ballesteros

Riquelme

2014

Studies in Computational Intelligence

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Abstract. Digital forensics research includes several stages. Once we have collected the data the last goal is to obtain a model in order to predict the output with unseen data. We focus on supervised machine learning techniques. This chapter performs an experimental study on a forensics data task for multi-class classification including several types of methods such as decision trees, bayes classifiers, based on rules, artificial neural networks and based on nearest neighbors. The classifiers have been evaluated with two performance measures: accuracy and Cohen's kappa. The followed experimental design has been a 4-fold cross validation with thirty repetitions for non-deterministic algorithms in order to obtain reliable results, averaging the results from 120 runs. A statistical analysis has been conducted in order to compare each pair of algorithms by means of t-tests using both the accuracy and Cohen's kappa metrics.

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“…The refractive index measurement using the oil immersion temperature variation method and a phase contrast microscope has been widely applied for the analysis of forensic glass samples. [1][2][3][4][5][6][7][8][9][10][11][12][13] Apart from early studies from the 80s and 90s, which conrmed the variation of RI within different samples, some research has been carried out in the last 10 years. For instance, the variation of RI within sheets of both toughened and non-toughened glass samples has been evaluated, with the RI being more disperse in the rst one.…”

Section: Introductionmentioning

confidence: 99%

“…12 The effect of glass annealing has also been investigated in glass samples subjected to a controlled heating-cooling program to compare RI before and aer the process, making the differentiation between toughened and non-toughened glass samples possible. [3][4][5] In any case, glass fragments with sharp, ne, and high contrast edges provide the most precise and accurate RI values. 13 Study of glass samples through both RI determination and elemental analysis has also been performed.…”

Section: Introductionmentioning

confidence: 99%

Validation of an analytical method for the refractive index measurement of glass fragments. Application to a hit-and-run incident

et al. 2013

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A method to determine the refractive index (RI) of glass samples was validated in this research article. This validation was performed by studying analytical features such as the working range, precision, robustness, and bias. Locke silicone oil type B, glass standards type B and a sodium D source (589.3 nm) were chosen for a working RI range from 1.50225 to 1.52381, according to the typical RI values of glass samples of forensic interest. Robustness, calculated as Relative Standard Deviation (RSD) of slopes of ten calibration lines within a period of one month was 0.24%. Precision of the method (calculated for the two extreme glass standards B2 and B12 in the working range) was 0.21% and 0.14% (repeatability) and 0.12% and 0.09% (intermediate precision), respectively. A Certified Reference Material (CRM) of glass of known RI was employed to estimate the bias of the method, verifying a relative error of 0.00066%. The method was applied to eight validation samples (six glass fragments from different parts of an automobile, a glass container and an architectural tinted window), which were differentiated through their RI values. Finally, the procedure was applied to interpret the origin of glass evidence taken from a hit-and-run incident. A common origin of recovered and control glass fragments was supposed on the basis of the RI determination of these samples, together with the application of useful match criteria in forensic pairwise comparisons of glass fragments. Results were confirmed by means of a highly discriminatory technique such as Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS).

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A study of the performance and utility of annealing in forensic glass analysis

Cited by 18 publications

References 19 publications

Forensic Science

Forensic Science

Data Mining Methods Applied to a Digital Forensics Task for Supervised Machine Learning

Validation of an analytical method for the refractive index measurement of glass fragments. Application to a hit-and-run incident

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