02176nam a2200205   4500001000700000100004100007101000800048200026100056210007900317215002000396300014100416330125600557606002501813606001501838606002901853606002201882606002201904700002201926701002201948393957  a20160530d2014       y0pory50      ba  aeng  aInterpretation of ignitable liquid residues in fire debris analysisbRecurso eletrónicoeeffects of competitive adsorption, development of an expert system and assessment of the false positive/incorrect assignment ratefJ. Graham Rankin, Nicholas Petraco  a[Rockville, MD]cNational Criminal Justice Reference Service (NCJRS)d2014  a1 CD-ROMd12 cm  aResearch 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.).  aTitle 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.  aPRODUTO INFLAMÁVEL  aINCÊNDIO  aANÁLISE DE VESTÍGIOS  aCIÊNCIA FORENSE  aQUÍMICA FORENSE  aRANKINbJ. Graham  aPETRACObNicholas