Evaluation and Examination of a Possible Shoe‑polish Trace in a Hold‑up Case

作     者：Line Gueissaz Tacha Hicks Cyril Muehlethaler Geneviève Massonnet 

作者机构：Faculty of LawCriminal Justice and Public AdministrationSchool of Criminal JusticeUniversity of LausanneLausanne 1015Switzerland Fondation Pour la Formation Continue Universitaire LausannoiseLausanne1015Switzerland Department of ChemistryCity College of the City University of New YorkNew York 10031USA 

出 版 物：《Journal of Forensic Science and Medicine》 (法庭科学与法医学杂志（英文）)

年 卷 期：2016年第2卷第4期

页      面：233-244页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：Bayesian evaluation firearms trace evidence transfer 

摘      要：In this article,we show how the Bayesian framework can be applied to a hold‑up case involving a possible shoe‑polish trace according to one of the *** article highlights the importance of interpreting data from the beginning of the examination through the preassessment *** a set of alternative propositions in agreement with the information provided by the parties is chosen,one can establish what is needed in the ***,limited data were available to assign factors such as transfer and rarity of the ***,we showed how specific case‑tailored experiments provide meaningful data for *** this case,the police had observed a trace on the jacket of a person who reported to have been pushed with the offender’s gun during the hold‑up *** the jacket was submitted to our laboratory,the exact nature of the trace was *** from this trace were collected and analyzed by stereomicroscopy,microscopy,and infrared *** obtained results supported that this trace was waxy *** literature dealing with the analysis of waxy materials generally uses solvent extraction‑based ***,as our analytical sequence allowed a good discrimination of different waxy products of known origin,we considered that this methodology was ***,it did not involve any extraction step that could lead to undesired compounds from the substrate(e.g.,dyes and additives).This article therefore suggests an alternative analytical sequence for the analysis of such material in casework.