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.     

U.S. CLS

This essay offers a brief account of the rise of cls thought in the United States and of its development within a largely hostile legal academy. As the essay suggests, cls thought has been variously deformed, arrested, normalized, and diffused – leaving the contemporary American legal academy in a state of suspended animation. This revised version was published online in July 2006 with corrections to the Cover Date.     

Sex and the genuine marriage: consummation and conjugality in Canadian citizenship

The idea of consummation as definitive of a marriage seems antiquated today. Yet, consummation operates as a central criterion in determinations of a ‘genuine marriage’ in Canadian immigration law. Drawing on the marriage and migration literature, theorizations of sexual citizenship, and critical multiculturalism, we explore recent judicial considerations of consummation in Canadian family sponsorship adjudications. We searched the CanLII database (a Canadian database of legislation and judicial records) for the keywords ‘non-consummation’ and ‘genuine marriage’ and identified 68 cases. Of these cases, three primary themes emerged: the use of consummation as a ‘technology of love’ – a requirement for assessing the authenticity of the spousal relationship and hence the worthiness of sponsorship; the discursive construction of sexual and gendered norms in expectations around marital intimacy, and the articulation of liberal tolerance and the cultural other in the assessments of genuine marriages among primarily racialized Canadians or permanent residents and their foreign spouses. We challenge these discursive narratives and conclude by arguing that instead of consummation as the basis for genuine marriage, the Law Commission of Canada’s ‘close personal relationship’ model is a better way to assess the ‘genuineness’ of relationships for determining Canadian citizenship.