Nine autosomal STRs genotype profiles in a sample from Córdoba (Argentina)

Nine STRs loci have been typed in a sample from Córdoba (Argentina).     

Analysis of the CODIS autosomal STR loci in four main Colombian regions

Genotype polymorphism studies at the 13 loci STRs included in the combined DNA index system [CODIS and PCR-based short tandem repeat loci, in: Proceedings of the Second European Symposium on Human Identification, Promega Corporation, Madison, WI, 1998, pp. 73-88; J. Forensic Sci. 46 (2001) 453] (CODIS: D3S1358, HUMvWA31, HUMFGA, D8S1179 D21S11, D18S51, D5S818, D13S317, D7S820, HUMTH01, HUMTPOX, HUMCSF1PO and D16S539) were carried out in a sample of 1429 unrelated Colombian individuals belonging to 25 different departments. As many other countries in Latino-America, Colombia shows an important admixture component, basically integrated by Amerindians, European-descendants and African-descendants. Due to the fact that only partial population analyses have been carried out in the country, the main aim of the present analysis is to establish a database of forensic interest based on the widely used CODIS systems covering the main Colombian regions.     

Y-chromosome STR haplotypes in Córdoba (Argentina)

Eight Y-chromosome STRs were investigated in a male population sample from Córdoba region (Argentina). Complete Y-chromosomal STRs haplotypes were obtained in 100 individuals, among which 91 different haplotypes were observed. The most common haplotype was shared by 4% of the sample, while 86 haplotypes were unique. The gene diversity was 0.9875 and the discrimination capacity was 0.8600. The combined polymorphism provides a powerful discrimination tool for routine forensic applications.     

Age patterns of suicide: identification and characterization of European clusters and trends

Relatively few studies have addressed age patterns of suicide using specifically designed and systematized approaches. Our main objective was to identify and characterize age patterns of suicide in Europe, both on cross-sectional and longitudinal perspectives, based on data comprising the two last decades of the 20th century. A second objective was to determine whether some analytical methods could be useful as complementary approaches to the traditional examination of age-specific rate curves. We identified and characterized four patterns: upward-sloping, convex, downward-sloping, and uniform. The first three reproduce patterns previously described, though we propose some modifications to the respective classification criteria. Longitudinally, pattern stability was found for most countries, but some notable exceptions were detected. From the computation of multiple-decrement life tables by European country, period, and gender, we derived cumulative distributions of age at death for suicide. The results indicate that this methodology is a useful tool, not only for describing and summarizing information, but, more importantly, for providing a better understanding of intrinsic features and complexities of the patterns. Finally, we discuss practical implications of the study in the context of previous theories linking age patterns of suicide to sociological and economic dimensions, and we raise a few questions and hypotheses to be addressed in future research.     

Fatal cranial injuries caused by an electric angle grinder

A case of fatal cranial injuries caused by an angle grinder is reported. The scalp lesions were typical of those produced by a cutting disk in a side-slipping movement. On the cranial vault were two bony losses of substance, one of which was deep enough for intracranial penetration of the disk. Signs of deflection of the disk, identical to those found on the scalp, were observed on the external bony table. Because of the circumstances in which the victim was discovered, in particular the damage to the machine which had a broken handle, and the lack of any indication of homicide or suicide, an accident is the most likely hypothesis.     

The Use of Laser Microdissection in Forensic Sexual Assault Casework: Pros and Cons Compared to Standard Methods

Sexual assault samples are among the most frequently analyzed in a forensic laboratory. These account for almost half of all samples processed routinely, and a large portion of these cases remain unsolved. These samples often pose problems to traditional analytic methods of identification because they consist most frequently of cell mixtures from at least two contributors: the victim (usually female) and the perpetrator (usually male). In this study, we propose the use of current preliminary testing for sperm detection in order to determine the chances of success when faced with samples which can be good candidates to undergo analysis with the laser microdissection technology. Also, we used laser microdissection technology to capture fluorescently stained cells of interest differentiated by gender. Collected materials were then used for DNA genotyping with commercially available amplification kits such as Minifiler, Identifiler Plus, NGM, and Y‐Filer. Both the methodology and the quality of the results were evaluated to assess the pros and cons of laser microdissection compared with standard methods. Overall, the combination of fluorescent staining combined with the Minifiler amplification kit provided the best results for autosomal markers, whereas the Y‐Filer kit returned the expected results regardless of the used method.     

Les tactiques d'influence1 des directeurs des ressources humaines employées auprès de l'équipe de direction du secteur public québécois

Abstract: This study examines the use of influence tactics by Human Resources managers with the members of the Quebec public-sector management team. The results indicate that they use a large number of influence tactics, that they use more frequently “soft” tactics than “hard” ones or “neither soft nor hard” ones, and they choose their tactics based on a cost-benefit analysis. Furthermore, the analyses reveal that respondents whose feelings of self-efficacy are high will not attempt to influence or use “soft” tactics any more frequently than respondents with low feelings of self-efficacy. Finally, the results indicate that our respondents exercise influence effectively.