کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
98741 160887 2016 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of criteria influencing the success rate of DNA swabs in operational conditions: A contribution to an evidence-based approach to crime scene investigation and triage
ترجمه فارسی عنوان
مطالعه معیارهای موثر بر میزان موفقیت سواب DNA در شرایط عملیاتی: کمک به یک رویکرد مبتنی بر شواهد برای بررسی صحنه جرم و تریاژ
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تولید محتوا
با 10 درصد تخفیف ویژه دانشیاری
کلمات کلیدی
بازرسی صحنه جرم؛ پروفایل DNA؛ علم پزشکی قانونی؛ دستورالعمل‌های مبتنی بر شواهد؛ حجم جرم و جنایت . اثربخشی؛ دزدی
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
چکیده انگلیسی


• Review of 4772 DNA swabs analyses results over a 2.5-year period.
• Influence of 6 criteria and their combination on the success rate of DNA swabs.
• Data-driven analysis using three different stable indicators to measure success rate.
• Evidence-based guidelines for crime scene investigation and triage.

DNA is nowadays swabbed routinely to investigate serious and volume crimes, but research remains scarce when it comes to determining the criteria that may impact the success rate of DNA swabs taken on different surfaces and situations. To investigate these criteria in fully operational conditions, DNA analysis results of 4772 swabs taken by the forensic unit of a police department in Western Switzerland over a 2.5-year period (2012–2014) in volume crime cases were considered.A representative and random sample of 1236 swab analyses was extensively examined and codified, describing several criteria such as whether the swabbing was performed at the scene or in the lab, the zone of the scene where it was performed, the kind of object or surface that was swabbed, whether the target specimen was a touch surface or a biological fluid, and whether the swab targeted a single surface or combined different surfaces. The impact of each criterion and of their combination was assessed in regard to the success rate of DNA analysis, measured through the quality of the resulting profile, and whether the profile resulted in a hit in the national database or not.Results show that some situations—such as swabs taken on door and window handles for instance—have a higher success rate than average swabs. Conversely, other situations lead to a marked decrease in the success rate, which should discourage further analyses of such swabs. Results also confirm that targeting a DNA swab on a single surface is preferable to swabbing different surfaces with the intent to aggregate cells deposited by the offender.Such results assist in predicting the chance that the analysis of a swab taken in a given situation will lead to a positive result. The study could therefore inform an evidence-based approach to decision-making at the crime scene (what to swab or not) and at the triage step (what to analyse or not), contributing thus to save resource and increase the efficiency of forensic science efforts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International: Genetics - Volume 20, January 2016, Pages 130–139
نویسندگان
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