Interpretation of ignitable liquid residues in fire debris analysis [Recurso eletrónico] : effects of competitive adsorption, development of an expert system and assessment of the false positive/incorrect assignment rate / J. Graham Rankin, Nicholas Petraco
Idioma: Inglês.Publicação: [Rockville, MD] : National Criminal Justice Reference Service (NCJRS), 2014Descrição física: 1 CD-ROM; 12 cmAssunto: 343931 | 243828 | 320649 | 321508 | 343048Resumo: 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.| Item type | Current location | Call number | Copy number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
| Monografias | Biblioteca da Polícia Judiciária | PJCD258 (Browse shelf) | PJCD258 | Available | PJ1CD258_38 |
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.).
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.
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