A mixed DNA profile controversy revisited

Semaan et al. (J Forensic Res, 2020, 11, 453) discuss a mock case “where eight different individuals [P₁ through P₈] could not be excluded in a mixed DNA analysis. Even though … expert DNA mixture analysis software was used.” Two of these are the true donors. The LRs reported are incorrect due to the incorrect entry of propositions into LRmix Studio. This forced the software to account for most of the alleles as drop-in, resulting in LRs 60–70 orders of magnitude larger than expected. P₁, P₂, P₄, P₅, and P₈ can be manually excluded using peak heights. This has relevance when using LRmix which does not use peak heights. We extend the work using the same two reference genotypes who were the true contributors as Semaan et al. (J Forensic Res, 2020, 11, 453). We simulate three two-donor mixtures with peak heights using these two genotypes and analyze using STRmix?. For the simulated 1:1 mixture, one of the non-donors’ LRs supported him being a contributor when no conditioning was used. When considered in combination with any other potential donors (i.e., with conditioning), this non-donor was correctly eliminated. For the 3:1 mixture, all results correctly supported that the non-donors were not contributors. The low-template 4:1 mixture LRs with no conditioning showed support for all eight profiles as donors. However, the results from pair-wise conditioning showed that only the two ground truth donors had LRs supporting that they were contributors to the mixture. We recommend the use of peak heights and conditioning profiles, as this allows better sensitivity and specificity even when the persons share many alleles.     

Recent Developments to British Multicultural Theory,Policy and Practice: The Case of British Muslims

Since the early 1970s, there have been highly sophisticated arguments and conceptual discussions put forward in relation to how Western liberal democracies might wish to manage their diverse ethnic minority populations. It is apparent, however, that in the current climate, the important principles of unity and diversity are insufficient to challenge differing forms of ethnic, racial, and religious inequality. This paper argues that because of its underlying assumptions and modus operandi in the post-September 11 climate, British multiculturalism has been ineffective, even supporting some commentators' suggestions of a return to assimilationism. There is a new era in post-September 11 political hegemony, economic determinism and structural and cultural racisms, with European government rhetoric and public policy almost exclusively aimed at Muslims—whether as existing citizens or as part of a process of limiting immigration (which has tended to be from mainly Eastern European, North African, and Middle Eastern sending regions and nations). The example of New Labour and how it has attempted to deal with multiculturalism in Britain is a case in point. The discussion explores the changing concept of multiculturalism with special reference to British Muslims and debates that emerge in relation to identity, nation and civil society. It is argued that the experience and treatment of British Muslims is important to explore and appreciate in the current climate as it provides a test case for the future of (a) British multiculturalism and (b) British Muslims in society per se.     

Ear piercing affects earprints: the role of ear piercing in human identification

Previous research conducted into the use of the human ear in the field of forensic identification has focused upon the use of grids and manual methods to measure and catalogue the different anatomical features of the ear. To date, few have considered the importance of the presence of ear piercings and their possible role in human identification. This study aims to highlight the common distribution of piercings of both ears in both genders and to explore the effect of piercings on earprints. The presence of a piercing may, in part, help to explain why partial and not whole earprints are sometimes recovered from a scene of crime (suggesting that the offender's ears may be pierced). The presence of piercings through the tragus and the superior part of the helix are shown to be infrequent and thus may be used to assist the identification of a body, due to its relative rarity with respect to piercings found in other areas of the ear.     

Multiple nails in the brain: an unusual suicidal attempt

We describe dangerous multiple self-inflicted brain-penetrating injuries caused by a nail gun device after a suicidal attempt for the first time in Iran. At the first forensic visit, we could not explain the manner of injuries. The authors reviewed the literature on the topics, and clinical presentation, radiographic findings, and forensic medical records are discussed.     

Developing and Validating a New Classroom Climate Observation Assessment Tool

The climate of school classrooms, shaped by a combination of teacher practices and peer processes, is an important determinant for children's psychosocial functioning and is a primary factor affecting bullying and victimization. Given that there are relatively few theoretically-grounded and validated assessment tools designed to measure the social climate of classrooms, our research team developed an observation tool through participatory action research (PAR). This article details how the assessment tool was designed and preliminarily validated in 18 third-, fourth-, and fifth-grade classrooms in a large urban public school district. The goals of this study are to illustrate the feasibility of a PAR paradigm in measurement development, ascertain the psychometric properties of the assessment tool, and determine associations with different indices of classroom levels of relational and physical aggression.     

Sketching and validating the location-based services (LBS) regulatory framework in Australia

Location-based services (LBS) are defined as those applications that combine the location of a mobile device associated with a given entity (individual or object) together with contextual information to offer a value-added service. LBS solutions are being deployed globally, and in some markets like Australia, without appropriate regulatory provisions in place. Recent debates in Australia have addressed the need to bridge the gap between technological developments and legal/regulatory provisions. This requires an assessment of the regulatory environment within a given social context such as Australia. The core components of such an investigation include: (a) composing a conceptual framework for analysing regulation of technologies such as LBS, one that is sensitive to public policy themes and challenges, and (b) applying this conceptual framework to the Australian setting in order to sketch and define the components of the present framework, and identify areas for improvement through a process of validation. This paper addresses these aims, demonstrating how the current regulatory framework in Australia is bound by legislation with respect to privacy, telecommunications, surveillance, and national security (that is, anti-terrorism), in addition to a set of industry guidelines for location-service providers (LSPs). The existing Australian framework, however, is lacking in its coverage and treatment of LBS and location data, and does not adequately address the themes and challenges in the defined conceptual framework.