Physical and chemical evidence remaining after the explosion of large improvised bombs. Part 2: Firings of calcium ammonium nitrate/sugar mixtures

Six test firings of large improvised explosive devices were carried out. The principal objectives of the firings were to measure the physical effects of the explosions upon representative objects placed nearby and to recover any chemical traces deposited on these objects. The results are intended for use as an aid in determining the approximate size and type of an explosive employed in terrorist attacks. Three 454 kg charges of a mixture of calcium ammonium nitrate (CAN) fertilizer and sugar, and three 2268 kg charges of a similar mixture, all confined in cylindrical steel containers were fired. Each charge was surrounded by 19 road signs mounted on posts and four vehicles, to act as witness materials. The analysis of aqueous swab extracts taken from the witness materials after firing showed the recovery of nitrate, ammonium and low levels of glucose. No sucrose was detected. Nitrate was usually recovered in greater quantities than ammonium and recovery generally decreased with increasing distance from the charges in any given direction. Quantities recovered from objects placed at the same distance in different directions varied considerably. Patterns of physical damage to the witness materials could be discerned according to their distance from the charge and the size of the charge. The velocities of detonation and air blast effects were measured.     

The application of "CrimeLite" to examination of computer components "in situ".

The authors consider the problem of identifying potential fingerprints and other marks in a computer system, having regard for the damage which conventional print enhancement techniques may cause. They evaluate a non-invasive method of mark location and recommend a new procedure for the handling of digital evidence sources which may contain "conventional" evidence.     

The recruitment and retention of indigenous criminal justice agency staff in an Australian state

In Australia, as in other countries that have experienced colonisation, indigenous people are massively overrepresented in all stages of the criminal justice system. If criminal justice agencies are to provide culturally responsive and effective services to this group, it is important that they employ significant numbers of indigenous staff across all levels of their organisations. Despite the positive intentions of many justice agencies to increase the proportion of indigenous staff members they employ, the numbers remain low. In this article, we explore some of the possible reasons for this by reporting the results of focus groups conducted with existing indigenous justice agency employees. The employees raised a number of issues relevant to recruitment and retention. These are discussed in terms of their potential value in improving justice agency indigenous recruitment and retention strategies.     

Effect sizes in the treatment of sexual offenders

This article considers the benefits of sexual offender treatment in terms of the magnitude of the effect size produced by these interventions. Comparisons are made of the effect sizes with those generated by treatment of other offenders, by treatment for mental health problems, and by treatment for physical health problems. In all cases, effect sizes with sexual offenders are comparable to (and in some cases better than) effect sizes for the treatment of the other groups. As a final note, it is suggested that using a harm reduction index to estimate effect sizes for treatment with sexual offenders would produce more meaningful results.     

State Abortion Policies,Targeted Regulation of Abortion Provider Laws,and Abortion Demand

Targeted Regulation of Abortion Provider laws (or TRAP laws) are state laws that apply only to abortion providers and impose on them licensing fees, physical plant/personnel regulations, and requirements that exceed those imposed on other comparable health‐care providers or medical facilities. According to prochoice supporters, the explicit or implicit goal of TRAP laws is to drive abortion providers from the market and reduce the supply of abortion services. This paper examines whether a state TRAP licensing fee or a TRAP plant/personnel law also has an independent impact on women's demand for abortion over the period 1982–2005. The empirical results find that neither state TRAP law has a statistically significant independent effect on women's abortion demand. The empirical results remain robust even after controlling for time‐varying factors or the time period after the Supreme Court's landmark 1992 Planned Parenthood of Southeastern Pennsylvania v. Casey decision.     

How Exceptional Is India? A Test of Situational Action Theory

This study explores the generalizability of Situational Action Theory (SAT) in India by testing hypotheses related to the person–environment interaction in explaining offending. Drawing on data from a sample of 872 students between the ages of 14 and 17 from an Indian city collected as part of the International Self-Report Delinquency Study (ISRD3), we tested the hypothesis that Indian youths will report more delinquent acts if they have a higher propensity to commit crime combined with a greater exposure to criminogenic activities. Our findings show unequivocal support for the applicability of SAT in India where youths reported a slight increase in offending behavior if they exercised low self-control or if they were less moralistic (i.e., they were more crime-prone), or when exposed to criminal activities or peers. Consistent with tests of SAT in other contexts, we find that exposure to criminogenic environments increases offending for youth with higher levels of criminal propensity but does not impact youth with lower levels of criminal propensity. We speculate that the overall low rate of delinquent offending coupled with the cultural milieu of Indian youths may explain why criminogenic exposure may be less relevant in light of young people’s strong avoidance of rule-breaking.