Morphological and spectroscopic measurements of plastic bags for the purpose of discrimination

The discrimination of noncolored transparent polyethylene bags was studied by several nondestructive and semidestructive analytical methods. X-ray diffraction, infrared spectroscopy, and optical microscopy (differential interference contrast microscopy and phase contrast microscopy) were applied to polyethylene films. X-ray diffraction was used to distinguish variations in the crystalline phase, infrared spectroscopy was used to distinguish variations in the molecular components, and optical microscopy was used to distinguish the different surface morphologies. The results show that X-ray diffraction classifies the crystalline phase of the film depending on whether it is made from low-density polyethylene, linear low-density polyethylene, or high-density polyethylene; that infrared spectroscopy is useful to distinguish the molecular components and it is the most discriminating technique; and that optical microscopy discriminate films easily by their morphological differences.     

Insights from Ted Palmer: experimental criminology in a different era

Objectives  

Report insights from the career of the noted evaluation researcher, Ted Palmer, on emerging issues in correctional research and correctional treatment.     

Effectiveness of modified therapeutic community treatment within a medium-secure service for personality-disordered offenders

There is debate as to whether secure hospital treatment for offenders with personality disorder can be effective relative to criminal justice interventions. This study examines the evidence for long-term treatment of such offenders in hospital within in a modified therapeutic community model including accredited offending behaviour programmes. A panel sample of 47 patients were followed up on measures of violence risk (HCR-20, VRS) and symptom severity (SCL90-R). Intention-to-treat analysis with reliability thresholds showed significant positive change between assessment and discharge in both violence risk (VRS) and symptoms (SCL90-R) indicating a positive treatment effect. Threshold effects for treatment effectiveness seemed to occur at 1?year of treatment for risk and 3?years for symptom reduction.     

Contribution of parkland trees to farmers’ livelihoods: a case study from Mali

Native species of trees and shrubs contribute significantly to farmers' livelihoods by supplying food, medicinal products, fodder, and wood. In the case study reported in this article, this contribution to farmers' annual revenue varied from 26 per cent to 73 per cent, and was as high as US$ 650 a year for households for which agroforestry products were the primary source of revenue. Household consumption was not quantified in the study, but farmers' comments confirmed that native trees also played an important role in assuring food security, especially in the ‘hunger period’ when grain stores are low and farmers are waiting for the next harvest.     

Managing from the Middle: Frontline Supervisors and Perceptions of Their Organizational Power

Frontline supervisors serve in a critical role, maintaining relationships between upper management and frontline workers; however, we still know relatively little about how subordinates view their power in relation to their supervisors and how frontline supervisors understand and exercise their own power. Focusing on street‐level workers and frontline supervisors across a statewide community corrections agency, we explore perceptions, experiences, and assertions of power in the workplace. Using focus groups with thirty‐two street‐level probation and parole officers and focus groups and field observations of seventy‐five frontline supervisors, we find that officers and frontline supervisors have widely differing views on the power of the frontline supervisory position, some of which are influenced by gender. While street‐level workers align frontline supervisors with policy creators, frontline supervisors view themselves as disempowered go‐betweens. Frontline supervisors compensate for their perceived lack of power in policymaking and implementation by using micropower strategies to assert their power. This study extends street‐level bureaucrat theory to the role of frontline supervisors, who in practice are distant from the upper management roles with which they are typically categorized.     

“A different world” exploring and understanding the climate of a recently re-rolled sexual offender prison

Understanding how sexual offenders experience prison and its environment is important because such experiences can impact on rehabilitation outcomes. The purpose of this research investigation was to explore the rehabilitative and therapeutic climate of a recently re-rolled sexual offender prison. The research took a mixed methods approach and consisted of quantitative and qualitative phases. There were differences between prisoners and staff on their perception of the prison climate and for prisoner and staff relationships. The qualitative results helped to explain the quantitative findings and added a more nuanced understanding of the experience of the prison, the nature of prisoner and staff relationships and the opportunities for personal growth within the prison. The study has important implications for prisons that co-locate sexual offenders and want to provide an environment conducive to rehabilitation.