Computation of likelihood ratios in fingerprint identification for configurations of any number of minutiae

Recent court challenges have highlighted the need for statistical research on fingerprint identification. This paper proposes a model for computing likelihood ratios (LRs) to assess the evidential value of comparisons with any number of minutiae. The model considers minutiae type, direction and relative spatial relationships. It expands on previous work on three minutiae by adopting a spatial modeling using radial triangulation and a probabilistic distortion model for assessing the numerator of the LR. The model has been tested on a sample of 686 ulnar loops and 204 arches. Features vectors used for statistical analysis have been obtained following a preprocessing step based on Gabor filtering and image processing to extract minutiae data. The metric used to assess similarity between two feature vectors is based on an Euclidean distance measure. Tippett plots and rates of misleading evidence have been used as performance indicators of the model. The model has shown encouraging behavior with low rates of misleading evidence and a LR power of the model increasing significantly with the number of minutiae. The LRs that it provides are highly indicative of identity of source on a significant proportion of cases, even when considering configurations with few minutiae. In contrast with previous research, the model, in addition to minutia type and direction, incorporates spatial relationships of minutiae without introducing probabilistic independence assumptions. The model also accounts for finger distortion.     

Incidental findings in CT colonography: literature review and survey of current research practice

Incidental findings (IFs) of potential medical significance are seen in approximately 5-8 percent of asymptomatic subjects and 16 percent of symptomatic subjects participating in large computed tomography (CT) colonography (CTC) studies, with the incidence varying further by CT acquisition technique. While most CTC research programs have a well-defined plan to detect and disclose IFs, such plans are largely communicated only verbally. Written consent documents should also inform subjects of how IFs of potential medical significance will be detected and reported in CTC research studies.     

Helping Children in the Child Welfare Systems Heal from Trauma: A Systems Integration Approach

Numerous organizations touch the lives of children and their families following incidents of maltreatment, including family/dependency courts, child welfare agencies, foster parent associations, foster care agencies or substitute care facilities, mental health agencies, and others. The way these organizations work together is critically important. They have the potential to promote child safety and reduce the harmful impact of maltreatment on children, but also, unfortunately, at times their actions may worsen the traumatic experience for children and their families. The National Child Traumatic Stress Network conducted a survey of 53 child‐serving organizations in 10 states, to assess the ways the organizations gather and share trauma‐related information and the basic training about child trauma their staffs receive. The goal was to determine how the various service systems, including the courts, communicate with each other about trauma and the extent to which, alone or in combination, they promote children's healing following traumatic events. The survey results point to a need to improve collaboration on issues associated with child maltreatment and trauma. Judges can be important leaders in bringing about necessary changes. Recommendations for judges and courts are included.     

Can general strain theory explain white-collar crime? A preliminary investigation of the relationship between strain and select white-collar offenses

Agnew's (1992) general strain theory (GST) had been tested across a wide range of populations and on numerous criminal and analogous behaviors. The ability of GST to predict white-collar offending, however, had yet to be explored. Using data from convicted white-collar offenders, this research examined the ability of GST to explain white-collar offenses. The results revealed that GST was useful for predicting a select group of white-collar offenses, but might not be generalizable to individuals committing corporate-type crimes. Additionally, the findings suggested that the types of strain and negative emotion at work for white-collar offenders might vary from those found in other criminal populations. Implications for white-collar crime studies are discussed and ideas for future research are presented.     

The Limits of Regulation: Indirect Party Access to State Resources in Australia and the United Kingdom

The way in which political parties use state resources indirectly (e.g., parliamentary expenses) receives substantial attention in public debate, particularly when surrounded by perceptions of misuse. However, scholarly studies of resources indirectly available to parties through their functions in the state, how they are used and regulated, are rare. This article presents an analytical framework that identifies and categorizes the range of indirect resources linked to parties' institutional roles. It locates these resources within a four‐fold matrix of regulation, distinguishing regimes that vary in their detail and whether compliance is externally monitored. Undertaking comparative case studies of parliamentary resource use in the United Kingdom and Australia, we argue that the blurring of party‐political and parliamentary roles can impede the effectiveness of regulatory regimes that democracies adopt, regardless of detail and external enforcement. These findings have important implications for regulatory reforms that seek to constrain parties' behavior to depoliticize democratic governance.     

Spherical Photography and Virtual Tours for Presenting Crime Scenes and Forensic Evidence in New Zealand Courtrooms

The delivery of forensic science evidence in a clear and understandable manner is an important aspect of a forensic scientist's role during expert witness delivery in a courtroom trial. This article describes an Integrated Evidence Platform (IEP) system based on spherical photography which allows the audience to view the crime scene via a virtual tour and view the forensic scientist's evidence and results in context. Equipment and software programmes used in the creation of the IEP include a Nikon DSLR camera, a Seitz Roundshot VR Drive, PTGui Pro, and Tourweaver Professional Edition. The IEP enables a clear visualization of the crime scene, with embedded information such as photographs of items of interest, complex forensic evidence, the results of laboratory analyses, and scientific opinion evidence presented in context. The IEP has resulted in significant improvements to the pretrial disclosure of forensic results, enhanced the delivery of evidence in court, and improved the jury's understanding of the spatial relationship between results.     

Involving the Public: When Are Surveys and Stakeholder Interviews Effective?1

Scholars and practitioners alike advocate involving stakeholders in environmental decision making, although there is uncertainty regarding the effectiveness of public involvement tools and the degree of public involvement in the decision making process. Some researchers have gone a step further to promote the use of public surveys and stakeholder interviews as preferred means to include public concerns in environmental decision making. However, there is little evidence as to whether public involvement tools are effective at representing public preferences, especially when there is a shortage of technical information to inform public opinion. This study examines the effectiveness of surveys and stakeholder interviews for assessing the District of Columbia's environmental problems in a comparative risk assessment. The findings suggest that these public involvement tools are less effective when there is a shortage of technical data. Instead, more deliberative forms of public involvement may generate greater convergence of opinion regarding environmental problems.     

The Role of Dissociation in the Cycle of Violence

The primary aim of this study was to examine the role of dissociation in the relationship between child maltreatment and intimate partner violence among 148 inner city women. It was proposed that dissociation would be a mediator in the relationship between child maltreatment and intimate partner perpetration. Overall, the hypothesis was supported. Findings revealed that women with a history of child maltreatment who experienced high levels of dissociation were more likely to be perpetrators of intimate partner violence than those with low levels of dissociation.