Centro de Documentação da PJ
Monografia
 CD258 |
Interpretation of ignitable liquid residues in fire debris analysis [Documento electrónico] : effects of competitive adsorption, development of an expert system and assessment of the false positive/incorrect assignment rate / J. Graham Rankin, Nicholas Petraco.- [Rockville, MD] : National Criminal Justice Reference Service (NCJRS), 2014.- 1 CD-ROM ; 12 cm
Research report submitted to the U.S. Department of Justice, Award Number: 2010-DN-BX-K272. Ficheiro de 6,93 MB em formato PDF (153 p.).
PRODUTO INFLAMÁVEL, INCÊNDIO, ANÁLISE DE VESTÍGIOS, CIÊNCIA FORENSE, QUÍMICA FORENSE
Title page. Abstract. Executive summary. Introduction. Statement of problem. Statement of rationale for the research. Effect of substrates. Development of an expert system. Determination of error rates. Ignitable liquid pour patterns. METHODS: Competitive adsorption effects on fire debris analysis. Expert system development. Assessment of false positive rates and incorrect classification. Assessment of error rates for expert systems. Challenge samples for expert system. Ignitable liquid pour patterns. Small scale test burns. Sampling and extraction. Large scale test burns. Analysis. RESULTS: Effect of substrate on E1618. Variation with percentage charred. E1618 expert system development and graphical user interface. Challenging the expert system with spiked substrate samples. Determination of error rates by fire debris analysts. Ignitable liquid pour patterns. CONCLUSIONS. Substrate effects. Expert system. Error rate study of fire debris analysts. Ignitable liquid pour patterns. Implications for policy and practice. Implications for further research. Acknowledgements. References. Dissemination of research findings. Appendix 1: R-scripts used for analysis and GUI construction. Appendix 2: Expert system results for unknown samples.