Fibre evidence retrieval optimisation

To use this dataset, download and extract the zip file that it contains, then read the user guide that is provided in that file. As described in that guide, this dataset is intended to be helpful to those tasked with the optimisation, validation and/or verification of methods of fibre evidence recovery from crime scenes. It contains interactive plots which summarise the main findings of a quantitative experiment that was carried out by Staffordshire University in conjunction with Warwickshire & West Mercia Police as part of an ISO17020 accreditation study (Jones, Gwinnett and Jackson, 2018). This experiment was concerned with establishing the effect of four factors on target fibre retrieval rates achieved by self-adhesive tape from a range of surface types. The factors were: • Tape type. Two brands of tape were tested, namely J-Lar and Crystal Tabs. • Tape storage temperature. One roll of each of the two tape types was kept at each of -5, 19 and 35 °C then used to retrieve target fibres at 19 °C with the minimum of delay between removal from the controlled temperature environment and deployment. • Taping method. Two methods were used, namely zonal and 1 to 1. In the former, each piece of tape was contacted several times with different areas of the surface in question, whilst in the latter there was only one such contact per piece of tape used. • The surface from which the target fibres were recovered. There were twelve of these, namely Brick, Ceramic tile, Cushion cover, Glossed MDF, Jeans, Jumper (i.e. a sweater), Long carpet, Plywood, Seatbelt, Short carpet, T-shirt and Tracksuit trousers, each commonly encountered in crime scenes. Reference: Jones, Z V, Gwinnett, C and Jackson, A R W (2018). The effect of tape type, taping method and tape storage temperature on the retrieval rate of fibres from various surfaces: An example of data generation and analysis to facilitate trace evidence recovery validation and optimisation. Science and Justice. DOI: 10.1016/j.scijus.2018.12.003, available from https://doi.org/10.1016/j.scijus.2018.12.003 (accessed 7 Jan 2019).使用本数据集时，请先下载并解压其附带的压缩包文件，随后阅读该压缩包内提供的用户指南。如该指南所述，本数据集旨在为负责优化、验证及/或确证犯罪现场纤维证据提取方法的相关人员提供辅助支持。 本数据集包含交互式绘图，用于汇总斯塔福德郡大学（Staffordshire University）与沃里克郡及西默西亚警察局（Warwickshire & West Mercia Police）联合开展的一项定量实验的核心研究成果，该实验作为ISO17020认可研究的一部分，由Jones、Gwinnett与Jackson于2018年完成。 本次实验旨在探究四类因素对自粘胶带从多种材质表面提取目标纤维回收率的影响，具体影响因素如下： • 胶带类型：共测试两款商用胶带，分别为J-Lar与Crystal Tabs。 • 胶带储存温度：将两款胶带各一卷分别置于-5℃、19℃及35℃的控温环境中储存，随后在19℃环境下开展纤维提取作业，且从控温环境取出胶带至实际使用之间的延迟时间尽可能缩短。 • 贴取方法：共采用两种操作方式，即分区法与1对1法。其中分区法指每段胶带与待测表面的不同区域进行多次接触；而1对1法则指每段胶带仅与待测表面完成一次接触。 • 纤维提取表面类型：共涵盖12种犯罪现场常见表面，分别为砖块、瓷砖、坐垫套、光面中密度纤维板（Glossed MDF）、牛仔裤、针织衫（即毛衣）、长绒地毯、胶合板、安全带、短绒地毯、T恤与运动裤。 参考文献：Jones, Z V, Gwinnett, C 及 Jackson, A R W (2018). 胶带类型、贴取方法及储存温度对多种表面纤维提取率的影响：助力微量痕迹证据提取验证与优化的数据生成与分析示例. 《科学与正义（Science and Justice）》. DOI: 10.1016/j.scijus.2018.12.003，可通过链接https://doi.org/10.1016/j.scijus.2018.12.003获取（访问时间：2019年1月7日）。