Validation of the Cozart microplate EIA for analysis of opiates in oral fluid

The purpose of this study was to determine the performance characteristics of the Cozart microplate EIA for detecting opiates in oral fluid from patients in a drug misuse treatment program. Oral fluid samples were collected using the Cozart RapiScan Collection System from 216 donors who were receiving treatment for their addiction and were monitored for drug abuse. A further 40 oral fluid samples were collected from volunteer donors who were not drug users. The samples were analyzed in the laboratory by using the Cozart microplate EIA for opiates and confirmed using gas chromatography-mass spectrometry (GC-MS). The samples were stored frozen until analysis by GC-MS. The intra-assay precision for the Cozart microplate oral fluid EIA for opiates over 40 assays was 0.43% to 9.13% CV (within assay) and 2.9% to 9.1% CV (within day). A total of 109 samples were positive for various opiates. The Cozart microplate EIA for opiates in oral fluid, using a cut-off of 30 ng/ml morphine equivalents in neat oral fluid, had a sensitivity of 99.1 +/- 2.1% and a specificity of 94.4 +/- 2.2% versus GC-MS. A series of potential adulterants of oral fluid were evaluated and shown not to alter the outcome of the test result.     

When is a child not a child? Child soldiers in international law

International humanitarian law and international human rights law both prohibit the use of child soldiers in armed conflict. The protection afforded to children is problematic because the age a child may become a soldier and what constitutes child “soldiering” fluctuates between States and cultures. Differing levels of children soldiers’ protection leave them vulnerable to particular abuses. This paper examines some different attitudes and approaches towards the use of child soldiers and concludes that international human rights law and international humanitarian law does not adequately protect children.     

Women and sport: A lost ideal

In their analyses of capitalism and patriarchy, socialists and feminists have tended not to view sport as a legitimate area for sustained study. Socialists have often been content to view sport as a peripheral and unimportant feature of a world order dominated by capitalist social relations and economic contradictions, or have viewed sport as essentially a cultural reflection of the material sphere.Similarly, feminists have focussed their attention on the primary loci of work, family and sexuality, thereby unconsciously reinforcing the patriarchal concept of sport as masculine. In this analysis we briefly outline women's involvement in the recent Olympics and assess competing strategies for overcoming women's subordination in the arena of sport.     

Deconstructing Minorities/Majorities in Parliamentary Gulf States (Kuwait and Bahrain)

Abstract

The notion of ‘minority’ has traditionally been understood as an ethnic or religious category based on primary identity markers, and as such only makes sense relative to a broader polity. On closer examination, however, the case of the smaller Gulf states illustrates the constructed nature of the minority/majority dialectic. In these societies, with mixed populations and transnational foundations—, monarchic regimes have historically asserted themselves by promoting some groups over others to secure their loyalty.

This is particularly true in the parliamentary regimes of Kuwait and Bahrain. This article contends that while the ethno-religious understanding of ‘minority’ makes little heuristic sense in these two countries, the minority/majority dialectic is part of a political praxis used to garner support for the regime and by manufacturing ‘minorities’ to evade the principle of majority rule. The article traces the post-2011 responses by the Kuwaiti and Bahraini regimes to the rise of an oppositional majority. For Kuwait, it analyses the emphasis placed on the nation’s unity and the discrediting of the Bedouin’s political claims for Bahrain, it looks at how the authorities stressed the nation’s multicultural character to undermine the representativeness of the dominant Shiite political movement. Both strategies are designed to deflect the threat of power sharing.     

Development and Validation of a Technique for Casting Anatomical Features and Toolmarks

Time may elapse between examination of marks inflicted on the body and comparison with a potential weapon. Two‐dimensional photographs may be inadequate for effective comparison of a three‐dimensional mark with a putative instrument. Taking a cast and producing a positive image results in a lasting three‐dimensional record. This project aimed to develop and demonstrate the accuracy of an easy technique for production of long‐lasting positive images (using plaster of Paris and dental alginate). Casts of facial features of embalmed cadavers were used to produce a positive image of the face (death mask). Measurements of distances between facial anatomical landmarks were compared with measurements of distances between the same landmarks on the death masks to assess accuracy of reproduction. There were no significant differences between cadaver and death mask in 6 of 9 measurements, indicating this technique has high accuracy with less mobile facial features, but produces deformation of pliable features.     

Cross-border public care and adoption proceedings in the European Union

The free movement of persons within the EU has meant that children at risk of harm from family members may be living in a Member State of which they are not a national. The child may be made subject to legal measures under the national law of the host State for the protection of their welfare. This article explores the competence of the EU to protect children in these circumstances, and the scope of the Brussels IIa Regulation in governing jurisdiction over child protection proceedings. It discusses the difference between national child protection systems and the political controversy surrounding English law on adoption following care proceedings issued over a child who is a national of a different Member State. It suggests that further information sharing on national systems and cooperation between courts is necessary for the effectiveness of the law and to encourage understanding of legitimate variation in Member State national family law.     

The ecology of trust among hackers

Malicious hackers profit from the division of labour among highly skilled associates. However, duplicity and betrayal form an intrinsic part of their daily operations. This article examines how a community of hackers uses an automated reputation system to enhance trust among its members. We analyse 449,478 feedbacks collected over 27 months that rate the trustworthiness of 29,985 individuals belonging to the largest computer hacking forum. Only a tiny fraction of the forum membership (2.4%) participates in the vast majority (75%) of ‘trust exchanges’, limiting its utility. We observe a reporting bias where the propensity to report positive outcomes is 2.81 times greater among beginner hackers than among forum administrators. Reputation systems do not protect against trust decay caused here by the rapid expansion of the community. Finally, a qualitative analysis of 25,000 randomly selected feedbacks indicates that a diverse set of behaviours, skills and attitudes trigger assessments of trustworthiness.     

The Forensic Confirmation Bias: A Comparison Between Experts and Novices

A large body of research has described the influence of context information on forensic decision‐making. In this study, we examined the effect of context information on the search for and selection of traces by students (N = 36) and crime scene investigators (N = 58). Participants investigated an ambiguous mock crime scene and received prior information indicating suicide, a violent death or no information. Participants described their impression of the scene and wrote down which traces they wanted to secure. Results showed that context information impacted first impression of the scene and crime scene behavior, namely number of traces secured. Participants in the murder condition secured most traces. Furthermore, the students secured more crime‐related traces. Students were more confident in their first impression. This study does not indicate that experts outperform novices. We therefore argue for proper training on cognitive processes as an integral part of all forensic education.