Portable high‐resolution automated 3D imaging for footwear and tire impression capture

The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.     

Sanctions and Education Outcomes for Children in TANF Families

Most research on the impact of Welfare Reform has been upon the employment status of parents and trends in declining caseloads. Recent research has examined how children in Temporary Assistance to Needy Families (TANF) program families are faring, with growing interest in the effects upon children of the disruptions to cash benefits that result from program sanctions, the policies that are intended to motivate parents to comply with work requirements. Adding to the body of knowledge on children and TANF sanctions, this study used administrative data to examine school attendance rates and disruptions to enrollment, for children from families with at least one sanction. Findings indicate that there are important probable connections between the factors that contribute to challenges to employment that relate to parenting and the school engagement of children in TANF families.     

Really Responsive Regulation

Really Responsive Regulation seeks to add to current theories of enforcement by stressing the case for regulators to be responsive not only to the attitude of the regulated firm but also to the operating and cognitive frameworks of firms; the institutional environment and performance of the regulatory regime; the different logics of regulatory tools and strategies; and to changes in each of these elements. The approach pervades all the different tasks of enforcement activity: detecting undesirable or non-compliant behaviour; developing tools and strategies for responding to that behaviour; enforcing those tools and strategies; assessing their success or failure; and modifying them accordingly. The value of the approach is shown by outlining its potential application to UK environmental and fisheries controls. Putting the system into effect is itself challenging but failing to regulate really responsively can constitute an expensive process of shooting in the dark.     

The political economy of global firms from India and China

This article attempts to build a bridge between contemporary studies of global firms from emerging economies and existing theories in comparative political economy. It argues that given the primacy of the state as an economic actor in developing countries, the variety of capitalism literature could provide a theoretical foundation for firm-level analyses of emerging market multinationals. For example, the authors suggest that China and India may be moving towards a ‘hybrid market economy’. They also offer a typology of Indian and Chinese corporates to demonstrate an empirical approach to analysing domestic business–government relationships and the ways in which these firms are shaped by the peculiarities of their respective institutional setting. Finally, they identify some of the likely pitfalls of doing cross-national comparisons of emerging market multinationals, particularly with respect to the reliability of corporate data.     

Development and validation of the Cozart DDS oral fluid collection device

The testing of oral fluid for drugs of abuse has increased significantly over recent years and is now commonplace in drug rehabilitation clinics, the workplace, prisons and custody suites. The global problem of identifying drugged drivers has also led to an increase in oral fluid testing at the roadside. The main requirements for the implementation of roadside drug testing are a rapid sample collection time, collection of a known sample volume and recovery of drugs from the collection device. We report here the development of the Cozart^® DDS oral fluid collector, an oral fluid collector that combines rapid and adequate sample collection with satisfactory drug recovery. Oral fluid was collected from drug users (n = 134) and drug-free individuals (n = 137), using the Cozart^® DDS oral fluid collector. The mean time for the completion of collection (full coloration of the sample presence indicator) was 34 s for drug-free individuals and 44 s for drug users. The average volume collected was 0.34 mL (n = 271). No chemical stimulant (to induce salivation) was used to achieve the collection times observed in either the drug-free or the drug-taking sample populations. Drugs were extracted from the collector using the Cozart^® DDS buffer and drug recovery was determined by Cozart^® enzyme immunoassays. The recovery studies showed that for amphetamine, Δ⁹THC, cocaine, methadone, methamphetamine, morphine and temazepam over 90% of the drug in the sample was eluted from the collector. The Cozart^® DDS oral fluid collector provides a reliable mechanism for the collection of oral fluid at the roadside that achieves the rapid collection times required.