Detracking America's schools: Equity at zero cost?

Schools across the country are ending the practice of grouping students based on ability, in part, because of research indicating that tracking hurts low-ability students without helping students of other ability levels. Using a nationally representative survey conducted by the National Center for Education Statistics, (NCES) we reexamine the impact of tracking on high school student achievement through the estimation of a standard education production function. This approach allows us to control for the possibility that track is correlated with factors such as class size and teacher education. In addition, we address the possibility that there are unobserved student or school characteristics that affect both achievement and track placement. Our results indicate that abolishing tracking in America's schools would have a large positive impact on achievement for students currently in the lower tracks, but that this increase in achievement would come at the expense of students in upper-track classes.     

Postmortem Computed Tomography and Magnetic Resonance Imaging of Gunshot Wounds to the Neck

Postmortem magnetic resonance imaging (MRI) is rarely used for the radiologic assessment of gunshot injuries, although it has clear advantages over postmortem computed tomography (CT) with regard to the imaging of soft tissue injuries. Another benefit in using MRI is that lodged projectiles composed of nonferromagnetic material such as lead present only marginal metal artifacts compared with severe artifacts on CT. This case report presents CT and MRI findings in a case with two gunshot wounds to the neck: a perforating wound and a nonperforating wound with a lead bullet lodged in the cervical spine. The decedent underwent CT and MRI before the scheduled autopsy. A ring of radiopaque material under the dermis in the fatty tissue was identified at both entrance wounds on CT, which was indicative of contact shots. The perforating gunshot was clearly indicated on CT by bullet fragments along the wound channel through the perforated 6th cervical vertebra and the fractured cricoid cartilage at the exit wound. The second trajectory, however, was only assumed based on the presence of gunshot residues at the entrance wound and the position of the lodged bullet. The radiologic assessment was severely impeded by the metal artifacts on CT. Barely noticeable metal artifacts on MRI allowed for clear visualization of the soft tissue injuries and the ruptured medulla oblongata. Only MRI clarified the soft tissue injuries of the brainstem noninvasively, which could provide specific and graphic information on the rapidity of death and the incapacitation of the victim.     

Knowing the past to understand the present - issues in the contracting for cloud based services

This article builds on our previous introductory article to cloud computing ([2009] 25 CLSR 270-274) and seeks to explain how cloud computing has evolved. We then discuss how this evolution impacts on key contractual and legal considerations and how the treatment of these considerations might differ from their treatment in traditional IT supply agreements.     

‘Fade to Grey’: Older women,embodied claims and attributions in English university departments of education

This article explores the experiences of a small number of older women who work in university departments of education. The article starts with a brief review of some of the research that documents the experiences of women who work in departments of education. The article then considers the ways in which the older woman's body has become a focus for action, suppression and, above all, a site for constant work. Women are exhorted by the mass media to be vigilant in order to combat the embodied signs of passing time and to work on the project of the (ageing) body. The article then explores some of the ways that older women in education departments may be positioned/position themselves in relation to these pressures and some of the ways in which they disrupt these discourses.