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نتیجه جستجو - Chemical trace evidence

تعداد مقالات یافته شده: 2
ردیف عنوان نوع
1 The impact of chemical trace evidence on justice outcomes: Exploring the additive value of forensic science disciplines
تأثیر شواهد ردیابی شیمیایی بر نتایج عدالت: بررسی ارزش افزوده رشته های علوم پزشکی قانونی-2020
The focus of this research was to examine the contribution chemical trace evidence makes to criminal justice outcomes. The aim of this work was to place the discipline of chemical trace evidence under the spotlight as there is a dearth of robust research on the impact of this discipline. In this study, data relating to the forensic examinations in a sample of 238 cases which included chemical trace evidence, was collated with data from police investigations and court processes. The findings show that chemical trace evidence is frequently used in combination with other forensic disciplines to support the progress of high-level criminal cases through the justice system. Due to characteristics of how the criminal cases in the dataset were investigated and prosecuted, in combination with the methodology applied in this study, the impact of forensic evidence on the decision to charge suspects could not be analysed quantitatively. However, the impact of forensic evidence on court outcomes in the sample of cases was analysed using methodology that considered the results of the examinations, and the ability of the evidence to provide support for the inclusion or exclusion of persons of interest. The possibility of chemical trace evidence having impact when applied in combination with other forensic disciplines was also examined. It was found that biological examination results was a significant standalone predictor of court outcomes. In contrast, chemical trace examinations did not predict court outcomes when considered as a standalone predictor but examination results of chemical trace evidence in combination with ballistics/tool marks was significantly associated with court outcomes. The findings of this research indicate that, to assess the full impact of any discipline of forensic evidence on the criminal justice system, the analysis must take into account the potential for important synergies that may exist with other forensic and non-forensic evidence.
Keywords: Chemical trace evidence | Criminal justice system | Criminal justice outcomes | Quantitative analysis | Biology | Ballistics
مقاله انگلیسی
2 To trace or not to trace: A survey of how police use and perceive chemical trace evidence
پیگیری یا عدم پیگیری : بررسی نحوه استفاده و درک پلیس از پیگیری شواهد شیمیایی-2020
There is limited information available about the impact of chemical trace evidence and it has tended to be anecdotal and mostly pertaining to court outcomes. Very little is known about the use of chemical trace evidence by police investigators or the impact that this evidence form has on criminal investigations. This survey, which was conducted in Victoria, Australia, was aimed at addressing these inadequacies by capturing information from police investigators about: (i) the purpose of using chemical trace and other forensic services; (ii) the expectation of what value forensic services would provide; (iii) the actual impact of forensic evidence in specified cases; and (iv) the general perceptions of forensic science. Police officers who were the lead investigators in a sample of criminal investigations were selected as the subjects for this survey. Each of the sample cases included chemical trace evidence and many of the cases also included other forms of forensic evidence. The police investigators indicated that they use chemical trace evidence with the expectation that it will assist decision-making in their investigations and contribute to building a case for court. Survey responses indicated that chemical trace evidence can impact on multiple stages of a case and that this form of evidence can play a part in guiding police investigators in making decisions about how their cases progress through the criminal justice system. It was found that an important aspect of the impact of chemical trace evidence can involve connections with other forensic and non-forensic evidence in the cases. The provision of preliminary results, prior to the formal written reports that are issued for use in court, enables chemical trace evidence to contribute timely support to investigations. The findings of this survey study contradict prevailing perceptions that the contribution of chemical trace evidence is limited to the presentation of evidence in court.
Keywords: Forensic evidence | Criminal investigations | Chemical trace evidence | Criminal justice system | Police investigators
مقاله انگلیسی
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