The classification and discrimination of glass fragments using non destructive energy dispersive X-ray microfluorescence

Frequency of analytical characteristics is best estimated on glass recovered at random. However, as such data were not available to us, we decided to use control windows for this estimation. In order to use such a database, one has to establish that the recovered fragment comes from a window. Therefore, elemental analysis was used both for classification and discrimination of glass fragments. Several articles have been published on the subject, but most methods alter the glass sample. The use of non destructive energy dispersive X-ray microfluorescence (microXRF) for the analysis of small glass fragments has been evaluated in this context. The refractive index (RI) has also been measured in order to evaluate the complementarity of techniques. Classification of fragments has been achieved using Fisher's linear discriminant analysis (LDA) and neural networks (NN). Discrimination was based on Hotelling's T2 test. Only pairs that were not differentiated by RI followed by the Welch test were studied. The results show that neural network and linear discriminant analysis using qualitative and semi-quantitative data establishes a classification of glass specimens with a high degree of reliability. For discrimination, 119 windows collected from crime scene were compared: using RI it was possible to distinguish 6892 pairs. Out of 129 remaining pairs, 112 were distinguished by microXRF.     

The prevalence and characteristics of intimate partner violence in a community study of Chinese American women

A community probability-sampled survey was done of 181 Chinese American women to investigate the prevalence and nature of intimate partner violence (IPV) in Chinese Americans. Of participants, 42% knew a Chinese woman who had experienced IPV. Also, 14% had experienced IPV themselves in their lifetime (8% severe and 6% minor), 3% in the previous year, and 2% currently. In Chinese American women who were ever married, the lifetime prevalence of IPV was 17%. IPV resulted in physical injuries for 31% of women and affected their work and education. Exploratory analysis suggests that relationship problems and partner's alcohol use may be risk factors for IPV in this group.     

For the Want of Certainty: Vnuk,Juliana and Andrade and the Obligation to Insure

In 2014, the Court of Justice of the European Union in Damijan Vnuk v Zavarovalnica Triglav extended the requirement for the owner of a motor vehicle to possess insurance cover where the vehicle is used on a road or other public place to vehicles on private land. Beyond disquiet as to this extension, there remains uncertainty at statutory and jurisprudential levels. According to Fundo de Garantia Automóvel v Juliana, immobilised vehicles stored on private land but which are capable of being driven are subject to compulsory motor vehicle insurance whereas in Andrade v Crédito Agrícola Seguros, insurance is required only where the vehicle is used as a means of transport. Andrade appears overly restrictive and may operate to defeat the protections of the Motor Vehicle Insurance Directives. Clarification is needed, through a seventh MVID or direction from the CJEU, as to the authority of Andrade and the circumstances in which motor vehicles must be insured.     

Factors affecting turnover rates of public child welfare front line workers: comparing cohorts of title IV-E program graduates with regularly hired and trained staff

ABSTRACT

The purpose of the study is to examine the impact of a statewide intervention (BSW level Title IV-E Program) on both the workers’ intent to leave the job and their actual exit from a state administered public child welfare agency. Employees completed an extensive survey including scales assessing individual, team, and organizational variables that might impact turnover. Results show that more Title IV-E graduates stay with the agency than do regular hires and leave at a slower rate. Different variables impact intent to leave compared to actual exit and vary across type of employee. Implications for the workforce are discussed.     

Civil Asset Forfeiture Laws and Equitable Sharing Activity by the Police

Research Summary

For several decades, critics have argued that civil forfeiture laws create incentives for law enforcement to increase departmental revenue by “policing for profit.” By using data on federal equitable sharing payments to nearly 600 local law enforcement agencies between 2000 and 2012, we examine the relationship between the characteristics of state forfeiture laws and equitable sharing payments to local agencies. Our results indicate that agencies in states with state laws that are more restrictive or less rewarding to police collect more in federal equitable sharing. This finding supports the critics’ argument that police behavior in regard to forfeiture activities is influenced by the financial rewards and burdens involved.

Policy Implications

Our results reveal that the findings of investigative journalism and case study research, that is, that police forfeiture activities are influenced by financial rewards, may be more generalizable to law enforcement than previously thought. Despite recent state‐level reforms, federal equitable sharing and most state forfeiture laws provide limited due process protections and have minimal accountability or reporting requirements. Concerns about the impact of civil forfeiture practices on perceptions of procedural justice and police legitimacy are discussed, and possible policy reforms are reviewed.     

Degrees of Separation: Informal Social Protection,Relatedness and Migration in Biswanath,Bangladesh

This paper argues for a more precise and context specific understanding of mechanisms of ‘informal social protection’ in Bangladesh. The context is a ‘Londoni’ village in Sylhet which has high levels of internal and overseas migration. The economic boom caused by the latter provides important employment opportunities for people from much poorer areas of Bangladesh, who have moved into the area. Yet, as our findings show, the extent to which the poor can call upon the help and protection of rich overseas migrants depends upon the degree of closeness to, or separation from, them. This is marked both through real and fictive kinship as well as geography: those that come from nearby become ‘our own poor’, whereas those from further away are treated as ‘outsiders', not qualifying for significant ‘help’. As the paper argues, access to hierarchically ordered places is vital for the sustainability of precarious livelihoods. Yet whilst geographical movement is an important survival strategy for the poor, it is only when social relations are established with wealthy patrons that it can be said to contribute to informal social protection.     

A study in relation to the random distribution of four fibre types on clothing (incorporating a review of previous target fibre studies).

A new target fibre study was undertaken building upon eight previous published studies, which are reviewed here. Fifty-eight items of outer clothing, obtained from households across England, were taped and searched for three types of commonly occurring fibres and one less common fibre type. The tapes were examined using a combination of automatic and manual searching. Any fibres similar to the target fibres were removed and examined using microspectrophotometry, comparison microscopy, thin layer chromatography (TLC) and fourier transform infrared spectroscopy (FTIR) where applicable. One polyester fibre, four acrylic fibres and eleven wool fibres were found that matched the three commonly occurring target fibre samples. None of the less common polyester fibres were found. One item had six matching wool fibres and another had the polyester fibre and an acrylic fibre recovered from it. The remaining eight fibres were each recovered from individual items. The results suggest that finding a large number of fibres that match a control is unlikely to happen by chance, which supports the findings of the previous target fibre studies.