The National Ballistics Imaging Comparison (NBIC) project

In response to the guidelines issued by the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB-International) to establish traceability and quality assurance in U.S. crime laboratories, a NIST/ATF joint project entitled National Ballistics Imaging Comparison (NBIC) was initialized in 2008. The NBIC project aims to establish a National Traceability and Quality System for ballistics identifications in crime laboratories within the National Integrated Ballistics Information Network (NIBIN) of the U.S. NIST Standard Reference Material (SRM) 2460 bullets and 2461 cartridge cases are used as reference standards. 19 ballistics examiners from 13 U.S. crime laboratories participated in this project. They each performed 24 periodic image acquisitions and correlations of the SRM bullets and cartridge cases over the course of a year, but one examiner only participated in Phase 1 tests of SRM cartridge case. The correlation scores were collected by NIST for statistical analyses, from which control charts and control limits were developed for the proposed Quality System and for promoting future assessments and accreditations for firearm evidence in U.S. forensic laboratories in accordance with the ISO 17025 Standard.     

Racial Context and Crime Reporting: A Test of Black’s Stratification Hypothesis

Contextual factors that contribute to race differences in reporting crime to the police are an important element in Donald Black??s theory of the behavior of the law, yet few studies have investigated whether these differences vary depending on social context. The present study investigates whether the relationships between victim and offender race and the reporting of crime are moderated by the level of racial stratification in a given place as Black??s stratification hypothesis would predict. Using victim survey data from 40 metropolitan areas, as well as data from other sources, we find results that are consistent with Black??s stratification hypothesis, namely, that victim and offender race are more strongly associated with the reporting of crime in those metropolitan areas where the gap in economic status between blacks and whites is larger and the groups are more residentially segregated. The theory, however, is unable to account for the high rates of reporting of black-on-black assaults found across the 40 metropolitan areas. The question of how the needs of black victims may outweigh their reluctance to call the police is an important issue for future research.     

Morphine to codeine concentration ratio in blood and urine as a marker of illicit heroin use in forensic autopsy samples

A morphine to codeine ratio greater than unity (M/C>1) has been suggested as an indicator of heroin use in living individuals. The aim of this study was to examine the morphine to codeine ratio in a large population (N=2438) of forensically examined autopsy cases positive for 6-monoacetylmorphine (6-MAM) and/or morphine in blood and/or urine. Blood and urine concentrations of 6-MAM, morphine and codeine were examined using GC-MS and LC-MS/MS methods. In 6-MAM positive samples, the M/C ratio was greater than unity in 98% (N=917) of the blood samples and 96% (N=665) of the urine samples. Stratification of 6-MAM negative cases by M/C above or below unity revealed similarities in morphine and codeine concentrations in cases where M/C>1 and 6-MAM positive cases. Median blood and urine morphine concentrations were 8-10 times greater than codeine for both groups. Similarly to 6-MAM positive cases, 25-44 year-old men prevailed in the M/C>1 group. In comparison to cases where M/C ≤ 1, the M/C ratio was a hundred times higher in both 6-MAM positive and M/C>1 cases. The range of morphine concentration between the lowest and the highest quintile of codeine in M/C>1 cases was similar to that in 6-MAM positive cases. This range was much higher than for M/C ≤ 1 cases. Moreover, linear regression analyses, adjusted for age and gender, revealed a strong positive association between morphine and codeine in 6-MAM positive and M/C>1 cases. The M/C ratio appeared to be a good marker of heroin use in post-mortem cases. Both blood and urine M/C>1 can be used to separate heroin users from other cases positive for morphine and codeine.     

Migration and Social Reproduction at Critical Junctures in Family Life Course

This review paper focuses on low-income migrants in (or from) developing countries and their social reproduction, and asks what this means for their social protection. We focus on the recognition that migration involves (re)negotiations of social reproduction by migrants and their families. These renegotiations are heavily inflected with gendered power relations in ways that are specific to individual and family life course. As such, migration involves taking on new risks and dynamic vulnerabilities in sustaining everyday and intergenerational social reproduction. These are sharpened by the increasing feminisation of migration flows and obstructed by wider changes in social provisioning and exclusionary citizenship regimes. The resulting social protection challenges unfold over lifetimes, and are especially marked at critical periods of transition. Life-course thinking has the potential to theoretically integrate emerging insights from rich empirical studies; doing this supports the rationale for revaluing the importance of social reproduction within debates about migration and social protection.     

俄国的大国时代(1762—1825)

1762—1825年的俄国凭借其军事力量成为一个大国。尽管俄国很落后,而且对军事行动的关注在一定程度上强化了其传统的社会结构。但是作为大国,俄国有着显而易见的局限性,承受着作为大国不得不面对的压力。这些压力使俄国几乎难以承受如此大规模的军事行动。从长远来看,这迫使俄国质疑其传统社会结构的可持续性。     

The local agenda 21 issue commission in bath and North‐East Somerset: Review of a community consultation exercise towards sustainability

Local authorities in the UK have come under renewed pressure from central government both to adopt Local Agenda 21 and to advance participative democracy. In late 1996/early 1997, the (then) new unitary authority of Bath and North‐East Somerset Council set up a Local Agenda 21 Issue Commission to review its ‘sustainability’ performance and policy development practice with the direct involvement of the community. The way in which the commission was conceived and conducted resulted in difficulties in identifying and carrying out its task. Nonetheless, it kick‐started significant steps towards LA 21 within the council, and provided valuable insights into LA 21 implementation, and the nature of meaningful consultation.